{"version":3,"file":"regexr.js","sources":["../dev/lib/codemirror.js","../dev/lib/clipboard.js","../dev/lib/native.js","../dev/src/events/Event.js","../dev/src/events/EventDispatcher.js","../dev/src/utils/DOMUtils.js","../dev/src/utils/Utils.js","../dev/src/controls/Tooltip.js","../dev/src/net/Server.js","../dev/src/utils/CMUtils.js","../dev/src/utils/Track.js","../dev/src/controls/List.js","../dev/src/ExpressionLexer.js","../dev/src/views/ExpressionHighlighter.js","../dev/src/views/ExpressionHover.js","../dev/src/profiles/core.js","../dev/src/profiles/pcre.js","../dev/src/profiles/javascript.js","../dev/src/profiles/profiles.js","../dev/src/views/Expression.js","../dev/src/utils/UID.js","../dev/src/views/TextHighlighter.js","../dev/src/views/TextHover.js","../dev/src/views/Text.js","../dev/src/views/tools/Explain.js","../dev/src/views/tools/Details.js","../dev/src/views/tools/Replace.js","../dev/src/SubstLexer.js","../dev/src/views/Tools.js","../dev/src/docs/sidebar_content.js","../dev/src/controls/LinkRow.js","../dev/src/views/Example.js","../dev/src/views/Community.js","../dev/src/controls/Status.js","../dev/src/views/Account.js","../dev/src/views/Share.js","../dev/src/views/Sidebar.js","../dev/src/views/Theme.js","../dev/src/docs/Reference.js","../dev/src/docs/reference_content.js","../dev/src/helpers/BrowserSolver.js","../dev/src/helpers/ServerSolver.js","../dev/src/Flavor.js","../dev/src/RefCoverage.js","../dev/src/helpers/Prefs.js","../dev/src/RegExr.js","../dev/src/app.js"],"sourcesContent":["// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: http://codemirror.net/LICENSE\n\n// This is CodeMirror (http://codemirror.net), a code editor\n// implemented in JavaScript on top of the browser's DOM.\n//\n// You can find some technical background for some of the code below\n// at http://marijnhaverbeke.nl/blog/#cm-internals .\n\n(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :\n typeof define === 'function' && define.amd ? define(factory) :\n (global.CodeMirror = factory());\n}(this, (function () { 'use strict';\n\n// Kludges for bugs and behavior differences that can't be feature\n// detected are enabled based on userAgent etc sniffing.\nvar userAgent = navigator.userAgent\nvar platform = navigator.platform\n\nvar gecko = /gecko\\/\\d/i.test(userAgent)\nvar ie_upto10 = /MSIE \\d/.test(userAgent)\nvar ie_11up = /Trident\\/(?:[7-9]|\\d{2,})\\..*rv:(\\d+)/.exec(userAgent)\nvar edge = /Edge\\/(\\d+)/.exec(userAgent)\nvar ie = ie_upto10 || ie_11up || edge\nvar ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1])\nvar webkit = !edge && /WebKit\\//.test(userAgent)\nvar qtwebkit = webkit && /Qt\\/\\d+\\.\\d+/.test(userAgent)\nvar chrome = !edge && /Chrome\\//.test(userAgent)\nvar presto = /Opera\\//.test(userAgent)\nvar safari = /Apple Computer/.test(navigator.vendor)\nvar mac_geMountainLion = /Mac OS X 1\\d\\D([8-9]|\\d\\d)\\D/.test(userAgent)\nvar phantom = /PhantomJS/.test(userAgent)\n\nvar ios = !edge && /AppleWebKit/.test(userAgent) && /Mobile\\/\\w+/.test(userAgent)\nvar android = /Android/.test(userAgent)\n// This is woefully incomplete. Suggestions for alternative methods welcome.\nvar mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent)\nvar mac = ios || /Mac/.test(platform)\nvar chromeOS = /\\bCrOS\\b/.test(userAgent)\nvar windows = /win/i.test(platform)\n\nvar presto_version = presto && userAgent.match(/Version\\/(\\d*\\.\\d*)/)\nif (presto_version) { presto_version = Number(presto_version[1]) }\nif (presto_version && presto_version >= 15) { presto = false; webkit = true }\n// Some browsers use the wrong event properties to signal cmd/ctrl on OS X\nvar flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11))\nvar captureRightClick = gecko || (ie && ie_version >= 9)\n\nfunction classTest(cls) { return new RegExp(\"(^|\\\\s)\" + cls + \"(?:$|\\\\s)\\\\s*\") }\n\nvar rmClass = function(node, cls) {\n var current = node.className\n var match = classTest(cls).exec(current)\n if (match) {\n var after = current.slice(match.index + match[0].length)\n node.className = current.slice(0, match.index) + (after ? match[1] + after : \"\")\n }\n}\n\nfunction removeChildren(e) {\n for (var count = e.childNodes.length; count > 0; --count)\n { e.removeChild(e.firstChild) }\n return e\n}\n\nfunction removeChildrenAndAdd(parent, e) {\n return removeChildren(parent).appendChild(e)\n}\n\nfunction elt(tag, content, className, style) {\n var e = document.createElement(tag)\n if (className) { e.className = className }\n if (style) { e.style.cssText = style }\n if (typeof content == \"string\") { e.appendChild(document.createTextNode(content)) }\n else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]) } }\n return e\n}\n// wrapper for elt, which removes the elt from the accessibility tree\nfunction eltP(tag, content, className, style) {\n var e = elt(tag, content, className, style)\n e.setAttribute(\"role\", \"presentation\")\n return e\n}\n\nvar range\nif (document.createRange) { range = function(node, start, end, endNode) {\n var r = document.createRange()\n r.setEnd(endNode || node, end)\n r.setStart(node, start)\n return r\n} }\nelse { range = function(node, start, end) {\n var r = document.body.createTextRange()\n try { r.moveToElementText(node.parentNode) }\n catch(e) { return r }\n r.collapse(true)\n r.moveEnd(\"character\", end)\n r.moveStart(\"character\", start)\n return r\n} }\n\nfunction contains(parent, child) {\n if (child.nodeType == 3) // Android browser always returns false when child is a textnode\n { child = child.parentNode }\n if (parent.contains)\n { return parent.contains(child) }\n do {\n if (child.nodeType == 11) { child = child.host }\n if (child == parent) { return true }\n } while (child = child.parentNode)\n}\n\nfunction activeElt() {\n // IE and Edge may throw an \"Unspecified Error\" when accessing document.activeElement.\n // IE < 10 will throw when accessed while the page is loading or in an iframe.\n // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable.\n var activeElement\n try {\n activeElement = document.activeElement\n } catch(e) {\n activeElement = document.body || null\n }\n while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement)\n { activeElement = activeElement.shadowRoot.activeElement }\n return activeElement\n}\n\nfunction addClass(node, cls) {\n var current = node.className\n if (!classTest(cls).test(current)) { node.className += (current ? \" \" : \"\") + cls }\n}\nfunction joinClasses(a, b) {\n var as = a.split(\" \")\n for (var i = 0; i < as.length; i++)\n { if (as[i] && !classTest(as[i]).test(b)) { b += \" \" + as[i] } }\n return b\n}\n\nvar selectInput = function(node) { node.select() }\nif (ios) // Mobile Safari apparently has a bug where select() is broken.\n { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length } }\nelse if (ie) // Suppress mysterious IE10 errors\n { selectInput = function(node) { try { node.select() } catch(_e) {} } }\n\nfunction bind(f) {\n var args = Array.prototype.slice.call(arguments, 1)\n return function(){return f.apply(null, args)}\n}\n\nfunction copyObj(obj, target, overwrite) {\n if (!target) { target = {} }\n for (var prop in obj)\n { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))\n { target[prop] = obj[prop] } }\n return target\n}\n\n// Counts the column offset in a string, taking tabs into account.\n// Used mostly to find indentation.\nfunction countColumn(string, end, tabSize, startIndex, startValue) {\n if (end == null) {\n end = string.search(/[^\\s\\u00a0]/)\n if (end == -1) { end = string.length }\n }\n for (var i = startIndex || 0, n = startValue || 0;;) {\n var nextTab = string.indexOf(\"\\t\", i)\n if (nextTab < 0 || nextTab >= end)\n { return n + (end - i) }\n n += nextTab - i\n n += tabSize - (n % tabSize)\n i = nextTab + 1\n }\n}\n\nvar Delayed = function() {this.id = null};\nDelayed.prototype.set = function (ms, f) {\n clearTimeout(this.id)\n this.id = setTimeout(f, ms)\n};\n\nfunction indexOf(array, elt) {\n for (var i = 0; i < array.length; ++i)\n { if (array[i] == elt) { return i } }\n return -1\n}\n\n// Number of pixels added to scroller and sizer to hide scrollbar\nvar scrollerGap = 30\n\n// Returned or thrown by various protocols to signal 'I'm not\n// handling this'.\nvar Pass = {toString: function(){return \"CodeMirror.Pass\"}}\n\n// Reused option objects for setSelection & friends\nvar sel_dontScroll = {scroll: false};\nvar sel_mouse = {origin: \"*mouse\"};\nvar sel_move = {origin: \"+move\"};\n// The inverse of countColumn -- find the offset that corresponds to\n// a particular column.\nfunction findColumn(string, goal, tabSize) {\n for (var pos = 0, col = 0;;) {\n var nextTab = string.indexOf(\"\\t\", pos)\n if (nextTab == -1) { nextTab = string.length }\n var skipped = nextTab - pos\n if (nextTab == string.length || col + skipped >= goal)\n { return pos + Math.min(skipped, goal - col) }\n col += nextTab - pos\n col += tabSize - (col % tabSize)\n pos = nextTab + 1\n if (col >= goal) { return pos }\n }\n}\n\nvar spaceStrs = [\"\"]\nfunction spaceStr(n) {\n while (spaceStrs.length <= n)\n { spaceStrs.push(lst(spaceStrs) + \" \") }\n return spaceStrs[n]\n}\n\nfunction lst(arr) { return arr[arr.length-1] }\n\nfunction map(array, f) {\n var out = []\n for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i) }\n return out\n}\n\nfunction insertSorted(array, value, score) {\n var pos = 0, priority = score(value)\n while (pos < array.length && score(array[pos]) <= priority) { pos++ }\n array.splice(pos, 0, value)\n}\n\nfunction nothing() {}\n\nfunction createObj(base, props) {\n var inst\n if (Object.create) {\n inst = Object.create(base)\n } else {\n nothing.prototype = base\n inst = new nothing()\n }\n if (props) { copyObj(props, inst) }\n return inst\n}\n\nvar nonASCIISingleCaseWordChar = /[\\u00df\\u0587\\u0590-\\u05f4\\u0600-\\u06ff\\u3040-\\u309f\\u30a0-\\u30ff\\u3400-\\u4db5\\u4e00-\\u9fcc\\uac00-\\ud7af]/\nfunction isWordCharBasic(ch) {\n return /\\w/.test(ch) || ch > \"\\x80\" &&\n (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch))\n}\nfunction isWordChar(ch, helper) {\n if (!helper) { return isWordCharBasic(ch) }\n if (helper.source.indexOf(\"\\\\w\") > -1 && isWordCharBasic(ch)) { return true }\n return helper.test(ch)\n}\n\nfunction isEmpty(obj) {\n for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } }\n return true\n}\n\n// Extending unicode characters. A series of a non-extending char +\n// any number of extending chars is treated as a single unit as far\n// as editing and measuring is concerned. This is not fully correct,\n// since some scripts/fonts/browsers also treat other configurations\n// of code points as a group.\nvar extendingChars = /[\\u0300-\\u036f\\u0483-\\u0489\\u0591-\\u05bd\\u05bf\\u05c1\\u05c2\\u05c4\\u05c5\\u05c7\\u0610-\\u061a\\u064b-\\u065e\\u0670\\u06d6-\\u06dc\\u06de-\\u06e4\\u06e7\\u06e8\\u06ea-\\u06ed\\u0711\\u0730-\\u074a\\u07a6-\\u07b0\\u07eb-\\u07f3\\u0816-\\u0819\\u081b-\\u0823\\u0825-\\u0827\\u0829-\\u082d\\u0900-\\u0902\\u093c\\u0941-\\u0948\\u094d\\u0951-\\u0955\\u0962\\u0963\\u0981\\u09bc\\u09be\\u09c1-\\u09c4\\u09cd\\u09d7\\u09e2\\u09e3\\u0a01\\u0a02\\u0a3c\\u0a41\\u0a42\\u0a47\\u0a48\\u0a4b-\\u0a4d\\u0a51\\u0a70\\u0a71\\u0a75\\u0a81\\u0a82\\u0abc\\u0ac1-\\u0ac5\\u0ac7\\u0ac8\\u0acd\\u0ae2\\u0ae3\\u0b01\\u0b3c\\u0b3e\\u0b3f\\u0b41-\\u0b44\\u0b4d\\u0b56\\u0b57\\u0b62\\u0b63\\u0b82\\u0bbe\\u0bc0\\u0bcd\\u0bd7\\u0c3e-\\u0c40\\u0c46-\\u0c48\\u0c4a-\\u0c4d\\u0c55\\u0c56\\u0c62\\u0c63\\u0cbc\\u0cbf\\u0cc2\\u0cc6\\u0ccc\\u0ccd\\u0cd5\\u0cd6\\u0ce2\\u0ce3\\u0d3e\\u0d41-\\u0d44\\u0d4d\\u0d57\\u0d62\\u0d63\\u0dca\\u0dcf\\u0dd2-\\u0dd4\\u0dd6\\u0ddf\\u0e31\\u0e34-\\u0e3a\\u0e47-\\u0e4e\\u0eb1\\u0eb4-\\u0eb9\\u0ebb\\u0ebc\\u0ec8-\\u0ecd\\u0f18\\u0f19\\u0f35\\u0f37\\u0f39\\u0f71-\\u0f7e\\u0f80-\\u0f84\\u0f86\\u0f87\\u0f90-\\u0f97\\u0f99-\\u0fbc\\u0fc6\\u102d-\\u1030\\u1032-\\u1037\\u1039\\u103a\\u103d\\u103e\\u1058\\u1059\\u105e-\\u1060\\u1071-\\u1074\\u1082\\u1085\\u1086\\u108d\\u109d\\u135f\\u1712-\\u1714\\u1732-\\u1734\\u1752\\u1753\\u1772\\u1773\\u17b7-\\u17bd\\u17c6\\u17c9-\\u17d3\\u17dd\\u180b-\\u180d\\u18a9\\u1920-\\u1922\\u1927\\u1928\\u1932\\u1939-\\u193b\\u1a17\\u1a18\\u1a56\\u1a58-\\u1a5e\\u1a60\\u1a62\\u1a65-\\u1a6c\\u1a73-\\u1a7c\\u1a7f\\u1b00-\\u1b03\\u1b34\\u1b36-\\u1b3a\\u1b3c\\u1b42\\u1b6b-\\u1b73\\u1b80\\u1b81\\u1ba2-\\u1ba5\\u1ba8\\u1ba9\\u1c2c-\\u1c33\\u1c36\\u1c37\\u1cd0-\\u1cd2\\u1cd4-\\u1ce0\\u1ce2-\\u1ce8\\u1ced\\u1dc0-\\u1de6\\u1dfd-\\u1dff\\u200c\\u200d\\u20d0-\\u20f0\\u2cef-\\u2cf1\\u2de0-\\u2dff\\u302a-\\u302f\\u3099\\u309a\\ua66f-\\ua672\\ua67c\\ua67d\\ua6f0\\ua6f1\\ua802\\ua806\\ua80b\\ua825\\ua826\\ua8c4\\ua8e0-\\ua8f1\\ua926-\\ua92d\\ua947-\\ua951\\ua980-\\ua982\\ua9b3\\ua9b6-\\ua9b9\\ua9bc\\uaa29-\\uaa2e\\uaa31\\uaa32\\uaa35\\uaa36\\uaa43\\uaa4c\\uaab0\\uaab2-\\uaab4\\uaab7\\uaab8\\uaabe\\uaabf\\uaac1\\uabe5\\uabe8\\uabed\\udc00-\\udfff\\ufb1e\\ufe00-\\ufe0f\\ufe20-\\ufe26\\uff9e\\uff9f]/\nfunction isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) }\n\n// Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range.\nfunction skipExtendingChars(str, pos, dir) {\n while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir }\n return pos\n}\n\n// Returns the value from the range [`from`; `to`] that satisfies\n// `pred` and is closest to `from`. Assumes that at least `to` satisfies `pred`.\nfunction findFirst(pred, from, to) {\n for (;;) {\n if (Math.abs(from - to) <= 1) { return pred(from) ? from : to }\n var mid = Math.floor((from + to) / 2)\n if (pred(mid)) { to = mid }\n else { from = mid }\n }\n}\n\n// The display handles the DOM integration, both for input reading\n// and content drawing. It holds references to DOM nodes and\n// display-related state.\n\nfunction Display(place, doc, input) {\n var d = this\n this.input = input\n\n // Covers bottom-right square when both scrollbars are present.\n d.scrollbarFiller = elt(\"div\", null, \"CodeMirror-scrollbar-filler\")\n d.scrollbarFiller.setAttribute(\"cm-not-content\", \"true\")\n // Covers bottom of gutter when coverGutterNextToScrollbar is on\n // and h scrollbar is present.\n d.gutterFiller = elt(\"div\", null, \"CodeMirror-gutter-filler\")\n d.gutterFiller.setAttribute(\"cm-not-content\", \"true\")\n // Will contain the actual code, positioned to cover the viewport.\n d.lineDiv = eltP(\"div\", null, \"CodeMirror-code\")\n // Elements are added to these to represent selection and cursors.\n d.selectionDiv = elt(\"div\", null, null, \"position: relative; z-index: 1\")\n d.cursorDiv = elt(\"div\", null, \"CodeMirror-cursors\")\n // A visibility: hidden element used to find the size of things.\n d.measure = elt(\"div\", null, \"CodeMirror-measure\")\n // When lines outside of the viewport are measured, they are drawn in this.\n d.lineMeasure = elt(\"div\", null, \"CodeMirror-measure\")\n // Wraps everything that needs to exist inside the vertically-padded coordinate system\n d.lineSpace = eltP(\"div\", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],\n null, \"position: relative; outline: none\")\n var lines = eltP(\"div\", [d.lineSpace], \"CodeMirror-lines\")\n // Moved around its parent to cover visible view.\n d.mover = elt(\"div\", [lines], null, \"position: relative\")\n // Set to the height of the document, allowing scrolling.\n d.sizer = elt(\"div\", [d.mover], \"CodeMirror-sizer\")\n d.sizerWidth = null\n // Behavior of elts with overflow: auto and padding is\n // inconsistent across browsers. This is used to ensure the\n // scrollable area is big enough.\n d.heightForcer = elt(\"div\", null, null, \"position: absolute; height: \" + scrollerGap + \"px; width: 1px;\")\n // Will contain the gutters, if any.\n d.gutters = elt(\"div\", null, \"CodeMirror-gutters\")\n d.lineGutter = null\n // Actual scrollable element.\n d.scroller = elt(\"div\", [d.sizer, d.heightForcer, d.gutters], \"CodeMirror-scroll\")\n d.scroller.setAttribute(\"tabIndex\", \"-1\")\n // The element in which the editor lives.\n d.wrapper = elt(\"div\", [d.scrollbarFiller, d.gutterFiller, d.scroller], \"CodeMirror\")\n\n // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)\n if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0 }\n if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true }\n\n if (place) {\n if (place.appendChild) { place.appendChild(d.wrapper) }\n else { place(d.wrapper) }\n }\n\n // Current rendered range (may be bigger than the view window).\n d.viewFrom = d.viewTo = doc.first\n d.reportedViewFrom = d.reportedViewTo = doc.first\n // Information about the rendered lines.\n d.view = []\n d.renderedView = null\n // Holds info about a single rendered line when it was rendered\n // for measurement, while not in view.\n d.externalMeasured = null\n // Empty space (in pixels) above the view\n d.viewOffset = 0\n d.lastWrapHeight = d.lastWrapWidth = 0\n d.updateLineNumbers = null\n\n d.nativeBarWidth = d.barHeight = d.barWidth = 0\n d.scrollbarsClipped = false\n\n // Used to only resize the line number gutter when necessary (when\n // the amount of lines crosses a boundary that makes its width change)\n d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null\n // Set to true when a non-horizontal-scrolling line widget is\n // added. As an optimization, line widget aligning is skipped when\n // this is false.\n d.alignWidgets = false\n\n d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null\n\n // Tracks the maximum line length so that the horizontal scrollbar\n // can be kept static when scrolling.\n d.maxLine = null\n d.maxLineLength = 0\n d.maxLineChanged = false\n\n // Used for measuring wheel scrolling granularity\n d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null\n\n // True when shift is held down.\n d.shift = false\n\n // Used to track whether anything happened since the context menu\n // was opened.\n d.selForContextMenu = null\n\n d.activeTouch = null\n\n input.init(d)\n}\n\n// Find the line object corresponding to the given line number.\nfunction getLine(doc, n) {\n n -= doc.first\n if (n < 0 || n >= doc.size) { throw new Error(\"There is no line \" + (n + doc.first) + \" in the document.\") }\n var chunk = doc\n while (!chunk.lines) {\n for (var i = 0;; ++i) {\n var child = chunk.children[i], sz = child.chunkSize()\n if (n < sz) { chunk = child; break }\n n -= sz\n }\n }\n return chunk.lines[n]\n}\n\n// Get the part of a document between two positions, as an array of\n// strings.\nfunction getBetween(doc, start, end) {\n var out = [], n = start.line\n doc.iter(start.line, end.line + 1, function (line) {\n var text = line.text\n if (n == end.line) { text = text.slice(0, end.ch) }\n if (n == start.line) { text = text.slice(start.ch) }\n out.push(text)\n ++n\n })\n return out\n}\n// Get the lines between from and to, as array of strings.\nfunction getLines(doc, from, to) {\n var out = []\n doc.iter(from, to, function (line) { out.push(line.text) }) // iter aborts when callback returns truthy value\n return out\n}\n\n// Update the height of a line, propagating the height change\n// upwards to parent nodes.\nfunction updateLineHeight(line, height) {\n var diff = height - line.height\n if (diff) { for (var n = line; n; n = n.parent) { n.height += diff } }\n}\n\n// Given a line object, find its line number by walking up through\n// its parent links.\nfunction lineNo(line) {\n if (line.parent == null) { return null }\n var cur = line.parent, no = indexOf(cur.lines, line)\n for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {\n for (var i = 0;; ++i) {\n if (chunk.children[i] == cur) { break }\n no += chunk.children[i].chunkSize()\n }\n }\n return no + cur.first\n}\n\n// Find the line at the given vertical position, using the height\n// information in the document tree.\nfunction lineAtHeight(chunk, h) {\n var n = chunk.first\n outer: do {\n for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) {\n var child = chunk.children[i$1], ch = child.height\n if (h < ch) { chunk = child; continue outer }\n h -= ch\n n += child.chunkSize()\n }\n return n\n } while (!chunk.lines)\n var i = 0\n for (; i < chunk.lines.length; ++i) {\n var line = chunk.lines[i], lh = line.height\n if (h < lh) { break }\n h -= lh\n }\n return n + i\n}\n\nfunction isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size}\n\nfunction lineNumberFor(options, i) {\n return String(options.lineNumberFormatter(i + options.firstLineNumber))\n}\n\n// A Pos instance represents a position within the text.\nfunction Pos(line, ch, sticky) {\n if ( sticky === void 0 ) sticky = null;\n\n if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) }\n this.line = line\n this.ch = ch\n this.sticky = sticky\n}\n\n// Compare two positions, return 0 if they are the same, a negative\n// number when a is less, and a positive number otherwise.\nfunction cmp(a, b) { return a.line - b.line || a.ch - b.ch }\n\nfunction equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 }\n\nfunction copyPos(x) {return Pos(x.line, x.ch)}\nfunction maxPos(a, b) { return cmp(a, b) < 0 ? b : a }\nfunction minPos(a, b) { return cmp(a, b) < 0 ? a : b }\n\n// Most of the external API clips given positions to make sure they\n// actually exist within the document.\nfunction clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))}\nfunction clipPos(doc, pos) {\n if (pos.line < doc.first) { return Pos(doc.first, 0) }\n var last = doc.first + doc.size - 1\n if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) }\n return clipToLen(pos, getLine(doc, pos.line).text.length)\n}\nfunction clipToLen(pos, linelen) {\n var ch = pos.ch\n if (ch == null || ch > linelen) { return Pos(pos.line, linelen) }\n else if (ch < 0) { return Pos(pos.line, 0) }\n else { return pos }\n}\nfunction clipPosArray(doc, array) {\n var out = []\n for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]) }\n return out\n}\n\n// Optimize some code when these features are not used.\nvar sawReadOnlySpans = false;\nvar sawCollapsedSpans = false;\nfunction seeReadOnlySpans() {\n sawReadOnlySpans = true\n}\n\nfunction seeCollapsedSpans() {\n sawCollapsedSpans = true\n}\n\n// TEXTMARKER SPANS\n\nfunction MarkedSpan(marker, from, to) {\n this.marker = marker\n this.from = from; this.to = to\n}\n\n// Search an array of spans for a span matching the given marker.\nfunction getMarkedSpanFor(spans, marker) {\n if (spans) { for (var i = 0; i < spans.length; ++i) {\n var span = spans[i]\n if (span.marker == marker) { return span }\n } }\n}\n// Remove a span from an array, returning undefined if no spans are\n// left (we don't store arrays for lines without spans).\nfunction removeMarkedSpan(spans, span) {\n var r\n for (var i = 0; i < spans.length; ++i)\n { if (spans[i] != span) { (r || (r = [])).push(spans[i]) } }\n return r\n}\n// Add a span to a line.\nfunction addMarkedSpan(line, span) {\n line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]\n span.marker.attachLine(line)\n}\n\n// Used for the algorithm that adjusts markers for a change in the\n// document. These functions cut an array of spans at a given\n// character position, returning an array of remaining chunks (or\n// undefined if nothing remains).\nfunction markedSpansBefore(old, startCh, isInsert) {\n var nw\n if (old) { for (var i = 0; i < old.length; ++i) {\n var span = old[i], marker = span.marker\n var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh)\n if (startsBefore || span.from == startCh && marker.type == \"bookmark\" && (!isInsert || !span.marker.insertLeft)) {\n var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh)\n ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to))\n }\n } }\n return nw\n}\nfunction markedSpansAfter(old, endCh, isInsert) {\n var nw\n if (old) { for (var i = 0; i < old.length; ++i) {\n var span = old[i], marker = span.marker\n var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh)\n if (endsAfter || span.from == endCh && marker.type == \"bookmark\" && (!isInsert || span.marker.insertLeft)) {\n var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh)\n ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,\n span.to == null ? null : span.to - endCh))\n }\n } }\n return nw\n}\n\n// Given a change object, compute the new set of marker spans that\n// cover the line in which the change took place. Removes spans\n// entirely within the change, reconnects spans belonging to the\n// same marker that appear on both sides of the change, and cuts off\n// spans partially within the change. Returns an array of span\n// arrays with one element for each line in (after) the change.\nfunction stretchSpansOverChange(doc, change) {\n if (change.full) { return null }\n var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans\n var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans\n if (!oldFirst && !oldLast) { return null }\n\n var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0\n // Get the spans that 'stick out' on both sides\n var first = markedSpansBefore(oldFirst, startCh, isInsert)\n var last = markedSpansAfter(oldLast, endCh, isInsert)\n\n // Next, merge those two ends\n var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0)\n if (first) {\n // Fix up .to properties of first\n for (var i = 0; i < first.length; ++i) {\n var span = first[i]\n if (span.to == null) {\n var found = getMarkedSpanFor(last, span.marker)\n if (!found) { span.to = startCh }\n else if (sameLine) { span.to = found.to == null ? null : found.to + offset }\n }\n }\n }\n if (last) {\n // Fix up .from in last (or move them into first in case of sameLine)\n for (var i$1 = 0; i$1 < last.length; ++i$1) {\n var span$1 = last[i$1]\n if (span$1.to != null) { span$1.to += offset }\n if (span$1.from == null) {\n var found$1 = getMarkedSpanFor(first, span$1.marker)\n if (!found$1) {\n span$1.from = offset\n if (sameLine) { (first || (first = [])).push(span$1) }\n }\n } else {\n span$1.from += offset\n if (sameLine) { (first || (first = [])).push(span$1) }\n }\n }\n }\n // Make sure we didn't create any zero-length spans\n if (first) { first = clearEmptySpans(first) }\n if (last && last != first) { last = clearEmptySpans(last) }\n\n var newMarkers = [first]\n if (!sameLine) {\n // Fill gap with whole-line-spans\n var gap = change.text.length - 2, gapMarkers\n if (gap > 0 && first)\n { for (var i$2 = 0; i$2 < first.length; ++i$2)\n { if (first[i$2].to == null)\n { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)) } } }\n for (var i$3 = 0; i$3 < gap; ++i$3)\n { newMarkers.push(gapMarkers) }\n newMarkers.push(last)\n }\n return newMarkers\n}\n\n// Remove spans that are empty and don't have a clearWhenEmpty\n// option of false.\nfunction clearEmptySpans(spans) {\n for (var i = 0; i < spans.length; ++i) {\n var span = spans[i]\n if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)\n { spans.splice(i--, 1) }\n }\n if (!spans.length) { return null }\n return spans\n}\n\n// Used to 'clip' out readOnly ranges when making a change.\nfunction removeReadOnlyRanges(doc, from, to) {\n var markers = null\n doc.iter(from.line, to.line + 1, function (line) {\n if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {\n var mark = line.markedSpans[i].marker\n if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))\n { (markers || (markers = [])).push(mark) }\n } }\n })\n if (!markers) { return null }\n var parts = [{from: from, to: to}]\n for (var i = 0; i < markers.length; ++i) {\n var mk = markers[i], m = mk.find(0)\n for (var j = 0; j < parts.length; ++j) {\n var p = parts[j]\n if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue }\n var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to)\n if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)\n { newParts.push({from: p.from, to: m.from}) }\n if (dto > 0 || !mk.inclusiveRight && !dto)\n { newParts.push({from: m.to, to: p.to}) }\n parts.splice.apply(parts, newParts)\n j += newParts.length - 3\n }\n }\n return parts\n}\n\n// Connect or disconnect spans from a line.\nfunction detachMarkedSpans(line) {\n var spans = line.markedSpans\n if (!spans) { return }\n for (var i = 0; i < spans.length; ++i)\n { spans[i].marker.detachLine(line) }\n line.markedSpans = null\n}\nfunction attachMarkedSpans(line, spans) {\n if (!spans) { return }\n for (var i = 0; i < spans.length; ++i)\n { spans[i].marker.attachLine(line) }\n line.markedSpans = spans\n}\n\n// Helpers used when computing which overlapping collapsed span\n// counts as the larger one.\nfunction extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 }\nfunction extraRight(marker) { return marker.inclusiveRight ? 1 : 0 }\n\n// Returns a number indicating which of two overlapping collapsed\n// spans is larger (and thus includes the other). Falls back to\n// comparing ids when the spans cover exactly the same range.\nfunction compareCollapsedMarkers(a, b) {\n var lenDiff = a.lines.length - b.lines.length\n if (lenDiff != 0) { return lenDiff }\n var aPos = a.find(), bPos = b.find()\n var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b)\n if (fromCmp) { return -fromCmp }\n var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b)\n if (toCmp) { return toCmp }\n return b.id - a.id\n}\n\n// Find out whether a line ends or starts in a collapsed span. If\n// so, return the marker for that span.\nfunction collapsedSpanAtSide(line, start) {\n var sps = sawCollapsedSpans && line.markedSpans, found\n if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {\n sp = sps[i]\n if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&\n (!found || compareCollapsedMarkers(found, sp.marker) < 0))\n { found = sp.marker }\n } }\n return found\n}\nfunction collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) }\nfunction collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) }\n\n// Test whether there exists a collapsed span that partially\n// overlaps (covers the start or end, but not both) of a new span.\n// Such overlap is not allowed.\nfunction conflictingCollapsedRange(doc, lineNo, from, to, marker) {\n var line = getLine(doc, lineNo)\n var sps = sawCollapsedSpans && line.markedSpans\n if (sps) { for (var i = 0; i < sps.length; ++i) {\n var sp = sps[i]\n if (!sp.marker.collapsed) { continue }\n var found = sp.marker.find(0)\n var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker)\n var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker)\n if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue }\n if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) ||\n fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0))\n { return true }\n } }\n}\n\n// A visual line is a line as drawn on the screen. Folding, for\n// example, can cause multiple logical lines to appear on the same\n// visual line. This finds the start of the visual line that the\n// given line is part of (usually that is the line itself).\nfunction visualLine(line) {\n var merged\n while (merged = collapsedSpanAtStart(line))\n { line = merged.find(-1, true).line }\n return line\n}\n\nfunction visualLineEnd(line) {\n var merged\n while (merged = collapsedSpanAtEnd(line))\n { line = merged.find(1, true).line }\n return line\n}\n\n// Returns an array of logical lines that continue the visual line\n// started by the argument, or undefined if there are no such lines.\nfunction visualLineContinued(line) {\n var merged, lines\n while (merged = collapsedSpanAtEnd(line)) {\n line = merged.find(1, true).line\n ;(lines || (lines = [])).push(line)\n }\n return lines\n}\n\n// Get the line number of the start of the visual line that the\n// given line number is part of.\nfunction visualLineNo(doc, lineN) {\n var line = getLine(doc, lineN), vis = visualLine(line)\n if (line == vis) { return lineN }\n return lineNo(vis)\n}\n\n// Get the line number of the start of the next visual line after\n// the given line.\nfunction visualLineEndNo(doc, lineN) {\n if (lineN > doc.lastLine()) { return lineN }\n var line = getLine(doc, lineN), merged\n if (!lineIsHidden(doc, line)) { return lineN }\n while (merged = collapsedSpanAtEnd(line))\n { line = merged.find(1, true).line }\n return lineNo(line) + 1\n}\n\n// Compute whether a line is hidden. Lines count as hidden when they\n// are part of a visual line that starts with another line, or when\n// they are entirely covered by collapsed, non-widget span.\nfunction lineIsHidden(doc, line) {\n var sps = sawCollapsedSpans && line.markedSpans\n if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {\n sp = sps[i]\n if (!sp.marker.collapsed) { continue }\n if (sp.from == null) { return true }\n if (sp.marker.widgetNode) { continue }\n if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))\n { return true }\n } }\n}\nfunction lineIsHiddenInner(doc, line, span) {\n if (span.to == null) {\n var end = span.marker.find(1, true)\n return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker))\n }\n if (span.marker.inclusiveRight && span.to == line.text.length)\n { return true }\n for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) {\n sp = line.markedSpans[i]\n if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&\n (sp.to == null || sp.to != span.from) &&\n (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&\n lineIsHiddenInner(doc, line, sp)) { return true }\n }\n}\n\n// Find the height above the given line.\nfunction heightAtLine(lineObj) {\n lineObj = visualLine(lineObj)\n\n var h = 0, chunk = lineObj.parent\n for (var i = 0; i < chunk.lines.length; ++i) {\n var line = chunk.lines[i]\n if (line == lineObj) { break }\n else { h += line.height }\n }\n for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {\n for (var i$1 = 0; i$1 < p.children.length; ++i$1) {\n var cur = p.children[i$1]\n if (cur == chunk) { break }\n else { h += cur.height }\n }\n }\n return h\n}\n\n// Compute the character length of a line, taking into account\n// collapsed ranges (see markText) that might hide parts, and join\n// other lines onto it.\nfunction lineLength(line) {\n if (line.height == 0) { return 0 }\n var len = line.text.length, merged, cur = line\n while (merged = collapsedSpanAtStart(cur)) {\n var found = merged.find(0, true)\n cur = found.from.line\n len += found.from.ch - found.to.ch\n }\n cur = line\n while (merged = collapsedSpanAtEnd(cur)) {\n var found$1 = merged.find(0, true)\n len -= cur.text.length - found$1.from.ch\n cur = found$1.to.line\n len += cur.text.length - found$1.to.ch\n }\n return len\n}\n\n// Find the longest line in the document.\nfunction findMaxLine(cm) {\n var d = cm.display, doc = cm.doc\n d.maxLine = getLine(doc, doc.first)\n d.maxLineLength = lineLength(d.maxLine)\n d.maxLineChanged = true\n doc.iter(function (line) {\n var len = lineLength(line)\n if (len > d.maxLineLength) {\n d.maxLineLength = len\n d.maxLine = line\n }\n })\n}\n\n// BIDI HELPERS\n\nfunction iterateBidiSections(order, from, to, f) {\n if (!order) { return f(from, to, \"ltr\") }\n var found = false\n for (var i = 0; i < order.length; ++i) {\n var part = order[i]\n if (part.from < to && part.to > from || from == to && part.to == from) {\n f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? \"rtl\" : \"ltr\")\n found = true\n }\n }\n if (!found) { f(from, to, \"ltr\") }\n}\n\nvar bidiOther = null\nfunction getBidiPartAt(order, ch, sticky) {\n var found\n bidiOther = null\n for (var i = 0; i < order.length; ++i) {\n var cur = order[i]\n if (cur.from < ch && cur.to > ch) { return i }\n if (cur.to == ch) {\n if (cur.from != cur.to && sticky == \"before\") { found = i }\n else { bidiOther = i }\n }\n if (cur.from == ch) {\n if (cur.from != cur.to && sticky != \"before\") { found = i }\n else { bidiOther = i }\n }\n }\n return found != null ? found : bidiOther\n}\n\n// Bidirectional ordering algorithm\n// See http://unicode.org/reports/tr9/tr9-13.html for the algorithm\n// that this (partially) implements.\n\n// One-char codes used for character types:\n// L (L): Left-to-Right\n// R (R): Right-to-Left\n// r (AL): Right-to-Left Arabic\n// 1 (EN): European Number\n// + (ES): European Number Separator\n// % (ET): European Number Terminator\n// n (AN): Arabic Number\n// , (CS): Common Number Separator\n// m (NSM): Non-Spacing Mark\n// b (BN): Boundary Neutral\n// s (B): Paragraph Separator\n// t (S): Segment Separator\n// w (WS): Whitespace\n// N (ON): Other Neutrals\n\n// Returns null if characters are ordered as they appear\n// (left-to-right), or an array of sections ({from, to, level}\n// objects) in the order in which they occur visually.\nvar bidiOrdering = (function() {\n // Character types for codepoints 0 to 0xff\n var lowTypes = \"bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN\"\n // Character types for codepoints 0x600 to 0x6f9\n var arabicTypes = \"nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111\"\n function charType(code) {\n if (code <= 0xf7) { return lowTypes.charAt(code) }\n else if (0x590 <= code && code <= 0x5f4) { return \"R\" }\n else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) }\n else if (0x6ee <= code && code <= 0x8ac) { return \"r\" }\n else if (0x2000 <= code && code <= 0x200b) { return \"w\" }\n else if (code == 0x200c) { return \"b\" }\n else { return \"L\" }\n }\n\n var bidiRE = /[\\u0590-\\u05f4\\u0600-\\u06ff\\u0700-\\u08ac]/\n var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/\n\n function BidiSpan(level, from, to) {\n this.level = level\n this.from = from; this.to = to\n }\n\n return function(str, direction) {\n var outerType = direction == \"ltr\" ? \"L\" : \"R\"\n\n if (str.length == 0 || direction == \"ltr\" && !bidiRE.test(str)) { return false }\n var len = str.length, types = []\n for (var i = 0; i < len; ++i)\n { types.push(charType(str.charCodeAt(i))) }\n\n // W1. Examine each non-spacing mark (NSM) in the level run, and\n // change the type of the NSM to the type of the previous\n // character. If the NSM is at the start of the level run, it will\n // get the type of sor.\n for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) {\n var type = types[i$1]\n if (type == \"m\") { types[i$1] = prev }\n else { prev = type }\n }\n\n // W2. Search backwards from each instance of a European number\n // until the first strong type (R, L, AL, or sor) is found. If an\n // AL is found, change the type of the European number to Arabic\n // number.\n // W3. Change all ALs to R.\n for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) {\n var type$1 = types[i$2]\n if (type$1 == \"1\" && cur == \"r\") { types[i$2] = \"n\" }\n else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == \"r\") { types[i$2] = \"R\" } }\n }\n\n // W4. A single European separator between two European numbers\n // changes to a European number. A single common separator between\n // two numbers of the same type changes to that type.\n for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) {\n var type$2 = types[i$3]\n if (type$2 == \"+\" && prev$1 == \"1\" && types[i$3+1] == \"1\") { types[i$3] = \"1\" }\n else if (type$2 == \",\" && prev$1 == types[i$3+1] &&\n (prev$1 == \"1\" || prev$1 == \"n\")) { types[i$3] = prev$1 }\n prev$1 = type$2\n }\n\n // W5. A sequence of European terminators adjacent to European\n // numbers changes to all European numbers.\n // W6. Otherwise, separators and terminators change to Other\n // Neutral.\n for (var i$4 = 0; i$4 < len; ++i$4) {\n var type$3 = types[i$4]\n if (type$3 == \",\") { types[i$4] = \"N\" }\n else if (type$3 == \"%\") {\n var end = (void 0)\n for (end = i$4 + 1; end < len && types[end] == \"%\"; ++end) {}\n var replace = (i$4 && types[i$4-1] == \"!\") || (end < len && types[end] == \"1\") ? \"1\" : \"N\"\n for (var j = i$4; j < end; ++j) { types[j] = replace }\n i$4 = end - 1\n }\n }\n\n // W7. Search backwards from each instance of a European number\n // until the first strong type (R, L, or sor) is found. If an L is\n // found, then change the type of the European number to L.\n for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) {\n var type$4 = types[i$5]\n if (cur$1 == \"L\" && type$4 == \"1\") { types[i$5] = \"L\" }\n else if (isStrong.test(type$4)) { cur$1 = type$4 }\n }\n\n // N1. A sequence of neutrals takes the direction of the\n // surrounding strong text if the text on both sides has the same\n // direction. European and Arabic numbers act as if they were R in\n // terms of their influence on neutrals. Start-of-level-run (sor)\n // and end-of-level-run (eor) are used at level run boundaries.\n // N2. Any remaining neutrals take the embedding direction.\n for (var i$6 = 0; i$6 < len; ++i$6) {\n if (isNeutral.test(types[i$6])) {\n var end$1 = (void 0)\n for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {}\n var before = (i$6 ? types[i$6-1] : outerType) == \"L\"\n var after = (end$1 < len ? types[end$1] : outerType) == \"L\"\n var replace$1 = before == after ? (before ? \"L\" : \"R\") : outerType\n for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1 }\n i$6 = end$1 - 1\n }\n }\n\n // Here we depart from the documented algorithm, in order to avoid\n // building up an actual levels array. Since there are only three\n // levels (0, 1, 2) in an implementation that doesn't take\n // explicit embedding into account, we can build up the order on\n // the fly, without following the level-based algorithm.\n var order = [], m\n for (var i$7 = 0; i$7 < len;) {\n if (countsAsLeft.test(types[i$7])) {\n var start = i$7\n for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {}\n order.push(new BidiSpan(0, start, i$7))\n } else {\n var pos = i$7, at = order.length\n for (++i$7; i$7 < len && types[i$7] != \"L\"; ++i$7) {}\n for (var j$2 = pos; j$2 < i$7;) {\n if (countsAsNum.test(types[j$2])) {\n if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)) }\n var nstart = j$2\n for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {}\n order.splice(at, 0, new BidiSpan(2, nstart, j$2))\n pos = j$2\n } else { ++j$2 }\n }\n if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)) }\n }\n }\n if (order[0].level == 1 && (m = str.match(/^\\s+/))) {\n order[0].from = m[0].length\n order.unshift(new BidiSpan(0, 0, m[0].length))\n }\n if (lst(order).level == 1 && (m = str.match(/\\s+$/))) {\n lst(order).to -= m[0].length\n order.push(new BidiSpan(0, len - m[0].length, len))\n }\n\n return direction == \"rtl\" ? order.reverse() : order\n }\n})()\n\n// Get the bidi ordering for the given line (and cache it). Returns\n// false for lines that are fully left-to-right, and an array of\n// BidiSpan objects otherwise.\nfunction getOrder(line, direction) {\n var order = line.order\n if (order == null) { order = line.order = bidiOrdering(line.text, direction) }\n return order\n}\n\nfunction moveCharLogically(line, ch, dir) {\n var target = skipExtendingChars(line.text, ch + dir, dir)\n return target < 0 || target > line.text.length ? null : target\n}\n\nfunction moveLogically(line, start, dir) {\n var ch = moveCharLogically(line, start.ch, dir)\n return ch == null ? null : new Pos(start.line, ch, dir < 0 ? \"after\" : \"before\")\n}\n\nfunction endOfLine(visually, cm, lineObj, lineNo, dir) {\n if (visually) {\n var order = getOrder(lineObj, cm.doc.direction)\n if (order) {\n var part = dir < 0 ? lst(order) : order[0]\n var moveInStorageOrder = (dir < 0) == (part.level == 1)\n var sticky = moveInStorageOrder ? \"after\" : \"before\"\n var ch\n // With a wrapped rtl chunk (possibly spanning multiple bidi parts),\n // it could be that the last bidi part is not on the last visual line,\n // since visual lines contain content order-consecutive chunks.\n // Thus, in rtl, we are looking for the first (content-order) character\n // in the rtl chunk that is on the last line (that is, the same line\n // as the last (content-order) character).\n if (part.level > 0) {\n var prep = prepareMeasureForLine(cm, lineObj)\n ch = dir < 0 ? lineObj.text.length - 1 : 0\n var targetTop = measureCharPrepared(cm, prep, ch).top\n ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch)\n if (sticky == \"before\") { ch = moveCharLogically(lineObj, ch, 1) }\n } else { ch = dir < 0 ? part.to : part.from }\n return new Pos(lineNo, ch, sticky)\n }\n }\n return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? \"before\" : \"after\")\n}\n\nfunction moveVisually(cm, line, start, dir) {\n var bidi = getOrder(line, cm.doc.direction)\n if (!bidi) { return moveLogically(line, start, dir) }\n if (start.ch >= line.text.length) {\n start.ch = line.text.length\n start.sticky = \"before\"\n } else if (start.ch <= 0) {\n start.ch = 0\n start.sticky = \"after\"\n }\n var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos]\n if (cm.doc.direction == \"ltr\" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) {\n // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines,\n // nothing interesting happens.\n return moveLogically(line, start, dir)\n }\n\n var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); }\n var prep\n var getWrappedLineExtent = function (ch) {\n if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} }\n prep = prep || prepareMeasureForLine(cm, line)\n return wrappedLineExtentChar(cm, line, prep, ch)\n }\n var wrappedLineExtent = getWrappedLineExtent(start.sticky == \"before\" ? mv(start, -1) : start.ch)\n\n if (cm.doc.direction == \"rtl\" || part.level == 1) {\n var moveInStorageOrder = (part.level == 1) == (dir < 0)\n var ch = mv(start, moveInStorageOrder ? 1 : -1)\n if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) {\n // Case 2: We move within an rtl part or in an rtl editor on the same visual line\n var sticky = moveInStorageOrder ? \"before\" : \"after\"\n return new Pos(start.line, ch, sticky)\n }\n }\n\n // Case 3: Could not move within this bidi part in this visual line, so leave\n // the current bidi part\n\n var searchInVisualLine = function (partPos, dir, wrappedLineExtent) {\n var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder\n ? new Pos(start.line, mv(ch, 1), \"before\")\n : new Pos(start.line, ch, \"after\"); }\n\n for (; partPos >= 0 && partPos < bidi.length; partPos += dir) {\n var part = bidi[partPos]\n var moveInStorageOrder = (dir > 0) == (part.level != 1)\n var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1)\n if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) }\n ch = moveInStorageOrder ? part.from : mv(part.to, -1)\n if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) }\n }\n }\n\n // Case 3a: Look for other bidi parts on the same visual line\n var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent)\n if (res) { return res }\n\n // Case 3b: Look for other bidi parts on the next visual line\n var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1)\n if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) {\n res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh))\n if (res) { return res }\n }\n\n // Case 4: Nowhere to move\n return null\n}\n\n// EVENT HANDLING\n\n// Lightweight event framework. on/off also work on DOM nodes,\n// registering native DOM handlers.\n\nvar noHandlers = []\n\nvar on = function(emitter, type, f) {\n if (emitter.addEventListener) {\n emitter.addEventListener(type, f, false)\n } else if (emitter.attachEvent) {\n emitter.attachEvent(\"on\" + type, f)\n } else {\n var map = emitter._handlers || (emitter._handlers = {})\n map[type] = (map[type] || noHandlers).concat(f)\n }\n}\n\nfunction getHandlers(emitter, type) {\n return emitter._handlers && emitter._handlers[type] || noHandlers\n}\n\nfunction off(emitter, type, f) {\n if (emitter.removeEventListener) {\n emitter.removeEventListener(type, f, false)\n } else if (emitter.detachEvent) {\n emitter.detachEvent(\"on\" + type, f)\n } else {\n var map = emitter._handlers, arr = map && map[type]\n if (arr) {\n var index = indexOf(arr, f)\n if (index > -1)\n { map[type] = arr.slice(0, index).concat(arr.slice(index + 1)) }\n }\n }\n}\n\nfunction signal(emitter, type /*, values...*/) {\n var handlers = getHandlers(emitter, type)\n if (!handlers.length) { return }\n var args = Array.prototype.slice.call(arguments, 2)\n for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args) }\n}\n\n// The DOM events that CodeMirror handles can be overridden by\n// registering a (non-DOM) handler on the editor for the event name,\n// and preventDefault-ing the event in that handler.\nfunction signalDOMEvent(cm, e, override) {\n if (typeof e == \"string\")\n { e = {type: e, preventDefault: function() { this.defaultPrevented = true }} }\n signal(cm, override || e.type, cm, e)\n return e_defaultPrevented(e) || e.codemirrorIgnore\n}\n\nfunction signalCursorActivity(cm) {\n var arr = cm._handlers && cm._handlers.cursorActivity\n if (!arr) { return }\n var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = [])\n for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1)\n { set.push(arr[i]) } }\n}\n\nfunction hasHandler(emitter, type) {\n return getHandlers(emitter, type).length > 0\n}\n\n// Add on and off methods to a constructor's prototype, to make\n// registering events on such objects more convenient.\nfunction eventMixin(ctor) {\n ctor.prototype.on = function(type, f) {on(this, type, f)}\n ctor.prototype.off = function(type, f) {off(this, type, f)}\n}\n\n// Due to the fact that we still support jurassic IE versions, some\n// compatibility wrappers are needed.\n\nfunction e_preventDefault(e) {\n if (e.preventDefault) { e.preventDefault() }\n else { e.returnValue = false }\n}\nfunction e_stopPropagation(e) {\n if (e.stopPropagation) { e.stopPropagation() }\n else { e.cancelBubble = true }\n}\nfunction e_defaultPrevented(e) {\n return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false\n}\nfunction e_stop(e) {e_preventDefault(e); e_stopPropagation(e)}\n\nfunction e_target(e) {return e.target || e.srcElement}\nfunction e_button(e) {\n var b = e.which\n if (b == null) {\n if (e.button & 1) { b = 1 }\n else if (e.button & 2) { b = 3 }\n else if (e.button & 4) { b = 2 }\n }\n if (mac && e.ctrlKey && b == 1) { b = 3 }\n return b\n}\n\n// Detect drag-and-drop\nvar dragAndDrop = function() {\n // There is *some* kind of drag-and-drop support in IE6-8, but I\n // couldn't get it to work yet.\n if (ie && ie_version < 9) { return false }\n var div = elt('div')\n return \"draggable\" in div || \"dragDrop\" in div\n}()\n\nvar zwspSupported\nfunction zeroWidthElement(measure) {\n if (zwspSupported == null) {\n var test = elt(\"span\", \"\\u200b\")\n removeChildrenAndAdd(measure, elt(\"span\", [test, document.createTextNode(\"x\")]))\n if (measure.firstChild.offsetHeight != 0)\n { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8) }\n }\n var node = zwspSupported ? elt(\"span\", \"\\u200b\") :\n elt(\"span\", \"\\u00a0\", null, \"display: inline-block; width: 1px; margin-right: -1px\")\n node.setAttribute(\"cm-text\", \"\")\n return node\n}\n\n// Feature-detect IE's crummy client rect reporting for bidi text\nvar badBidiRects\nfunction hasBadBidiRects(measure) {\n if (badBidiRects != null) { return badBidiRects }\n var txt = removeChildrenAndAdd(measure, document.createTextNode(\"A\\u062eA\"))\n var r0 = range(txt, 0, 1).getBoundingClientRect()\n var r1 = range(txt, 1, 2).getBoundingClientRect()\n removeChildren(measure)\n if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780)\n return badBidiRects = (r1.right - r0.right < 3)\n}\n\n// See if \"\".split is the broken IE version, if so, provide an\n// alternative way to split lines.\nvar splitLinesAuto = \"\\n\\nb\".split(/\\n/).length != 3 ? function (string) {\n var pos = 0, result = [], l = string.length\n while (pos <= l) {\n var nl = string.indexOf(\"\\n\", pos)\n if (nl == -1) { nl = string.length }\n var line = string.slice(pos, string.charAt(nl - 1) == \"\\r\" ? nl - 1 : nl)\n var rt = line.indexOf(\"\\r\")\n if (rt != -1) {\n result.push(line.slice(0, rt))\n pos += rt + 1\n } else {\n result.push(line)\n pos = nl + 1\n }\n }\n return result\n} : function (string) { return string.split(/\\r\\n?|\\n/); }\n\nvar hasSelection = window.getSelection ? function (te) {\n try { return te.selectionStart != te.selectionEnd }\n catch(e) { return false }\n} : function (te) {\n var range\n try {range = te.ownerDocument.selection.createRange()}\n catch(e) {}\n if (!range || range.parentElement() != te) { return false }\n return range.compareEndPoints(\"StartToEnd\", range) != 0\n}\n\nvar hasCopyEvent = (function () {\n var e = elt(\"div\")\n if (\"oncopy\" in e) { return true }\n e.setAttribute(\"oncopy\", \"return;\")\n return typeof e.oncopy == \"function\"\n})()\n\nvar badZoomedRects = null\nfunction hasBadZoomedRects(measure) {\n if (badZoomedRects != null) { return badZoomedRects }\n var node = removeChildrenAndAdd(measure, elt(\"span\", \"x\"))\n var normal = node.getBoundingClientRect()\n var fromRange = range(node, 0, 1).getBoundingClientRect()\n return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1\n}\n\nvar modes = {};\nvar mimeModes = {};\n// Extra arguments are stored as the mode's dependencies, which is\n// used by (legacy) mechanisms like loadmode.js to automatically\n// load a mode. (Preferred mechanism is the require/define calls.)\nfunction defineMode(name, mode) {\n if (arguments.length > 2)\n { mode.dependencies = Array.prototype.slice.call(arguments, 2) }\n modes[name] = mode\n}\n\nfunction defineMIME(mime, spec) {\n mimeModes[mime] = spec\n}\n\n// Given a MIME type, a {name, ...options} config object, or a name\n// string, return a mode config object.\nfunction resolveMode(spec) {\n if (typeof spec == \"string\" && mimeModes.hasOwnProperty(spec)) {\n spec = mimeModes[spec]\n } else if (spec && typeof spec.name == \"string\" && mimeModes.hasOwnProperty(spec.name)) {\n var found = mimeModes[spec.name]\n if (typeof found == \"string\") { found = {name: found} }\n spec = createObj(found, spec)\n spec.name = found.name\n } else if (typeof spec == \"string\" && /^[\\w\\-]+\\/[\\w\\-]+\\+xml$/.test(spec)) {\n return resolveMode(\"application/xml\")\n } else if (typeof spec == \"string\" && /^[\\w\\-]+\\/[\\w\\-]+\\+json$/.test(spec)) {\n return resolveMode(\"application/json\")\n }\n if (typeof spec == \"string\") { return {name: spec} }\n else { return spec || {name: \"null\"} }\n}\n\n// Given a mode spec (anything that resolveMode accepts), find and\n// initialize an actual mode object.\nfunction getMode(options, spec) {\n spec = resolveMode(spec)\n var mfactory = modes[spec.name]\n if (!mfactory) { return getMode(options, \"text/plain\") }\n var modeObj = mfactory(options, spec)\n if (modeExtensions.hasOwnProperty(spec.name)) {\n var exts = modeExtensions[spec.name]\n for (var prop in exts) {\n if (!exts.hasOwnProperty(prop)) { continue }\n if (modeObj.hasOwnProperty(prop)) { modeObj[\"_\" + prop] = modeObj[prop] }\n modeObj[prop] = exts[prop]\n }\n }\n modeObj.name = spec.name\n if (spec.helperType) { modeObj.helperType = spec.helperType }\n if (spec.modeProps) { for (var prop$1 in spec.modeProps)\n { modeObj[prop$1] = spec.modeProps[prop$1] } }\n\n return modeObj\n}\n\n// This can be used to attach properties to mode objects from\n// outside the actual mode definition.\nvar modeExtensions = {}\nfunction extendMode(mode, properties) {\n var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {})\n copyObj(properties, exts)\n}\n\nfunction copyState(mode, state) {\n if (state === true) { return state }\n if (mode.copyState) { return mode.copyState(state) }\n var nstate = {}\n for (var n in state) {\n var val = state[n]\n if (val instanceof Array) { val = val.concat([]) }\n nstate[n] = val\n }\n return nstate\n}\n\n// Given a mode and a state (for that mode), find the inner mode and\n// state at the position that the state refers to.\nfunction innerMode(mode, state) {\n var info\n while (mode.innerMode) {\n info = mode.innerMode(state)\n if (!info || info.mode == mode) { break }\n state = info.state\n mode = info.mode\n }\n return info || {mode: mode, state: state}\n}\n\nfunction startState(mode, a1, a2) {\n return mode.startState ? mode.startState(a1, a2) : true\n}\n\n// STRING STREAM\n\n// Fed to the mode parsers, provides helper functions to make\n// parsers more succinct.\n\nvar StringStream = function(string, tabSize, lineOracle) {\n this.pos = this.start = 0\n this.string = string\n this.tabSize = tabSize || 8\n this.lastColumnPos = this.lastColumnValue = 0\n this.lineStart = 0\n this.lineOracle = lineOracle\n};\n\nStringStream.prototype.eol = function () {return this.pos >= this.string.length};\nStringStream.prototype.sol = function () {return this.pos == this.lineStart};\nStringStream.prototype.peek = function () {return this.string.charAt(this.pos) || undefined};\nStringStream.prototype.next = function () {\n if (this.pos < this.string.length)\n { return this.string.charAt(this.pos++) }\n};\nStringStream.prototype.eat = function (match) {\n var ch = this.string.charAt(this.pos)\n var ok\n if (typeof match == \"string\") { ok = ch == match }\n else { ok = ch && (match.test ? match.test(ch) : match(ch)) }\n if (ok) {++this.pos; return ch}\n};\nStringStream.prototype.eatWhile = function (match) {\n var start = this.pos\n while (this.eat(match)){}\n return this.pos > start\n};\nStringStream.prototype.eatSpace = function () {\n var this$1 = this;\n\n var start = this.pos\n while (/[\\s\\u00a0]/.test(this.string.charAt(this.pos))) { ++this$1.pos }\n return this.pos > start\n};\nStringStream.prototype.skipToEnd = function () {this.pos = this.string.length};\nStringStream.prototype.skipTo = function (ch) {\n var found = this.string.indexOf(ch, this.pos)\n if (found > -1) {this.pos = found; return true}\n};\nStringStream.prototype.backUp = function (n) {this.pos -= n};\nStringStream.prototype.column = function () {\n if (this.lastColumnPos < this.start) {\n this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue)\n this.lastColumnPos = this.start\n }\n return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)\n};\nStringStream.prototype.indentation = function () {\n return countColumn(this.string, null, this.tabSize) -\n (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)\n};\nStringStream.prototype.match = function (pattern, consume, caseInsensitive) {\n if (typeof pattern == \"string\") {\n var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; }\n var substr = this.string.substr(this.pos, pattern.length)\n if (cased(substr) == cased(pattern)) {\n if (consume !== false) { this.pos += pattern.length }\n return true\n }\n } else {\n var match = this.string.slice(this.pos).match(pattern)\n if (match && match.index > 0) { return null }\n if (match && consume !== false) { this.pos += match[0].length }\n return match\n }\n};\nStringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)};\nStringStream.prototype.hideFirstChars = function (n, inner) {\n this.lineStart += n\n try { return inner() }\n finally { this.lineStart -= n }\n};\nStringStream.prototype.lookAhead = function (n) {\n var oracle = this.lineOracle\n return oracle && oracle.lookAhead(n)\n};\n\nvar SavedContext = function(state, lookAhead) {\n this.state = state\n this.lookAhead = lookAhead\n};\n\nvar Context = function(doc, state, line, lookAhead) {\n this.state = state\n this.doc = doc\n this.line = line\n this.maxLookAhead = lookAhead || 0\n};\n\nContext.prototype.lookAhead = function (n) {\n var line = this.doc.getLine(this.line + n)\n if (line != null && n > this.maxLookAhead) { this.maxLookAhead = n }\n return line\n};\n\nContext.prototype.nextLine = function () {\n this.line++\n if (this.maxLookAhead > 0) { this.maxLookAhead-- }\n};\n\nContext.fromSaved = function (doc, saved, line) {\n if (saved instanceof SavedContext)\n { return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead) }\n else\n { return new Context(doc, copyState(doc.mode, saved), line) }\n};\n\nContext.prototype.save = function (copy) {\n var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state\n return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state\n};\n\n\n// Compute a style array (an array starting with a mode generation\n// -- for invalidation -- followed by pairs of end positions and\n// style strings), which is used to highlight the tokens on the\n// line.\nfunction highlightLine(cm, line, context, forceToEnd) {\n // A styles array always starts with a number identifying the\n // mode/overlays that it is based on (for easy invalidation).\n var st = [cm.state.modeGen], lineClasses = {}\n // Compute the base array of styles\n runMode(cm, line.text, cm.doc.mode, context, function (end, style) { return st.push(end, style); },\n lineClasses, forceToEnd)\n var state = context.state\n\n // Run overlays, adjust style array.\n var loop = function ( o ) {\n var overlay = cm.state.overlays[o], i = 1, at = 0\n context.state = true\n runMode(cm, line.text, overlay.mode, context, function (end, style) {\n var start = i\n // Ensure there's a token end at the current position, and that i points at it\n while (at < end) {\n var i_end = st[i]\n if (i_end > end)\n { st.splice(i, 1, end, st[i+1], i_end) }\n i += 2\n at = Math.min(end, i_end)\n }\n if (!style) { return }\n if (overlay.opaque) {\n st.splice(start, i - start, end, \"overlay \" + style)\n i = start + 2\n } else {\n for (; start < i; start += 2) {\n var cur = st[start+1]\n st[start+1] = (cur ? cur + \" \" : \"\") + \"overlay \" + style\n }\n }\n }, lineClasses)\n };\n\n for (var o = 0; o < cm.state.overlays.length; ++o) loop( o );\n context.state = state\n\n return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null}\n}\n\nfunction getLineStyles(cm, line, updateFrontier) {\n if (!line.styles || line.styles[0] != cm.state.modeGen) {\n var context = getContextBefore(cm, lineNo(line))\n var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state)\n var result = highlightLine(cm, line, context)\n if (resetState) { context.state = resetState }\n line.stateAfter = context.save(!resetState)\n line.styles = result.styles\n if (result.classes) { line.styleClasses = result.classes }\n else if (line.styleClasses) { line.styleClasses = null }\n if (updateFrontier === cm.doc.highlightFrontier)\n { cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier) }\n }\n return line.styles\n}\n\nfunction getContextBefore(cm, n, precise) {\n var doc = cm.doc, display = cm.display\n if (!doc.mode.startState) { return new Context(doc, true, n) }\n var start = findStartLine(cm, n, precise)\n var saved = start > doc.first && getLine(doc, start - 1).stateAfter\n var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start)\n\n doc.iter(start, n, function (line) {\n processLine(cm, line.text, context)\n var pos = context.line\n line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null\n context.nextLine()\n })\n if (precise) { doc.modeFrontier = context.line }\n return context\n}\n\n// Lightweight form of highlight -- proceed over this line and\n// update state, but don't save a style array. Used for lines that\n// aren't currently visible.\nfunction processLine(cm, text, context, startAt) {\n var mode = cm.doc.mode\n var stream = new StringStream(text, cm.options.tabSize, context)\n stream.start = stream.pos = startAt || 0\n if (text == \"\") { callBlankLine(mode, context.state) }\n while (!stream.eol()) {\n readToken(mode, stream, context.state)\n stream.start = stream.pos\n }\n}\n\nfunction callBlankLine(mode, state) {\n if (mode.blankLine) { return mode.blankLine(state) }\n if (!mode.innerMode) { return }\n var inner = innerMode(mode, state)\n if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) }\n}\n\nfunction readToken(mode, stream, state, inner) {\n for (var i = 0; i < 10; i++) {\n if (inner) { inner[0] = innerMode(mode, state).mode }\n var style = mode.token(stream, state)\n if (stream.pos > stream.start) { return style }\n }\n throw new Error(\"Mode \" + mode.name + \" failed to advance stream.\")\n}\n\nvar Token = function(stream, type, state) {\n this.start = stream.start; this.end = stream.pos\n this.string = stream.current()\n this.type = type || null\n this.state = state\n};\n\n// Utility for getTokenAt and getLineTokens\nfunction takeToken(cm, pos, precise, asArray) {\n var doc = cm.doc, mode = doc.mode, style\n pos = clipPos(doc, pos)\n var line = getLine(doc, pos.line), context = getContextBefore(cm, pos.line, precise)\n var stream = new StringStream(line.text, cm.options.tabSize, context), tokens\n if (asArray) { tokens = [] }\n while ((asArray || stream.pos < pos.ch) && !stream.eol()) {\n stream.start = stream.pos\n style = readToken(mode, stream, context.state)\n if (asArray) { tokens.push(new Token(stream, style, copyState(doc.mode, context.state))) }\n }\n return asArray ? tokens : new Token(stream, style, context.state)\n}\n\nfunction extractLineClasses(type, output) {\n if (type) { for (;;) {\n var lineClass = type.match(/(?:^|\\s+)line-(background-)?(\\S+)/)\n if (!lineClass) { break }\n type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length)\n var prop = lineClass[1] ? \"bgClass\" : \"textClass\"\n if (output[prop] == null)\n { output[prop] = lineClass[2] }\n else if (!(new RegExp(\"(?:^|\\s)\" + lineClass[2] + \"(?:$|\\s)\")).test(output[prop]))\n { output[prop] += \" \" + lineClass[2] }\n } }\n return type\n}\n\n// Run the given mode's parser over a line, calling f for each token.\nfunction runMode(cm, text, mode, context, f, lineClasses, forceToEnd) {\n var flattenSpans = mode.flattenSpans\n if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans }\n var curStart = 0, curStyle = null\n var stream = new StringStream(text, cm.options.tabSize, context), style\n var inner = cm.options.addModeClass && [null]\n if (text == \"\") { extractLineClasses(callBlankLine(mode, context.state), lineClasses) }\n while (!stream.eol()) {\n if (stream.pos > cm.options.maxHighlightLength) {\n flattenSpans = false\n if (forceToEnd) { processLine(cm, text, context, stream.pos) }\n stream.pos = text.length\n style = null\n } else {\n style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses)\n }\n if (inner) {\n var mName = inner[0].name\n if (mName) { style = \"m-\" + (style ? mName + \" \" + style : mName) }\n }\n if (!flattenSpans || curStyle != style) {\n while (curStart < stream.start) {\n curStart = Math.min(stream.start, curStart + 5000)\n f(curStart, curStyle)\n }\n curStyle = style\n }\n stream.start = stream.pos\n }\n while (curStart < stream.pos) {\n // Webkit seems to refuse to render text nodes longer than 57444\n // characters, and returns inaccurate measurements in nodes\n // starting around 5000 chars.\n var pos = Math.min(stream.pos, curStart + 5000)\n f(pos, curStyle)\n curStart = pos\n }\n}\n\n// Finds the line to start with when starting a parse. Tries to\n// find a line with a stateAfter, so that it can start with a\n// valid state. If that fails, it returns the line with the\n// smallest indentation, which tends to need the least context to\n// parse correctly.\nfunction findStartLine(cm, n, precise) {\n var minindent, minline, doc = cm.doc\n var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100)\n for (var search = n; search > lim; --search) {\n if (search <= doc.first) { return doc.first }\n var line = getLine(doc, search - 1), after = line.stateAfter\n if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier))\n { return search }\n var indented = countColumn(line.text, null, cm.options.tabSize)\n if (minline == null || minindent > indented) {\n minline = search - 1\n minindent = indented\n }\n }\n return minline\n}\n\nfunction retreatFrontier(doc, n) {\n doc.modeFrontier = Math.min(doc.modeFrontier, n)\n if (doc.highlightFrontier < n - 10) { return }\n var start = doc.first\n for (var line = n - 1; line > start; line--) {\n var saved = getLine(doc, line).stateAfter\n // change is on 3\n // state on line 1 looked ahead 2 -- so saw 3\n // test 1 + 2 < 3 should cover this\n if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) {\n start = line + 1\n break\n }\n }\n doc.highlightFrontier = Math.min(doc.highlightFrontier, start)\n}\n\n// LINE DATA STRUCTURE\n\n// Line objects. These hold state related to a line, including\n// highlighting info (the styles array).\nvar Line = function(text, markedSpans, estimateHeight) {\n this.text = text\n attachMarkedSpans(this, markedSpans)\n this.height = estimateHeight ? estimateHeight(this) : 1\n};\n\nLine.prototype.lineNo = function () { return lineNo(this) };\neventMixin(Line)\n\n// Change the content (text, markers) of a line. Automatically\n// invalidates cached information and tries to re-estimate the\n// line's height.\nfunction updateLine(line, text, markedSpans, estimateHeight) {\n line.text = text\n if (line.stateAfter) { line.stateAfter = null }\n if (line.styles) { line.styles = null }\n if (line.order != null) { line.order = null }\n detachMarkedSpans(line)\n attachMarkedSpans(line, markedSpans)\n var estHeight = estimateHeight ? estimateHeight(line) : 1\n if (estHeight != line.height) { updateLineHeight(line, estHeight) }\n}\n\n// Detach a line from the document tree and its markers.\nfunction cleanUpLine(line) {\n line.parent = null\n detachMarkedSpans(line)\n}\n\n// Convert a style as returned by a mode (either null, or a string\n// containing one or more styles) to a CSS style. This is cached,\n// and also looks for line-wide styles.\nvar styleToClassCache = {};\nvar styleToClassCacheWithMode = {};\nfunction interpretTokenStyle(style, options) {\n if (!style || /^\\s*$/.test(style)) { return null }\n var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache\n return cache[style] ||\n (cache[style] = style.replace(/\\S+/g, \"cm-$&\"))\n}\n\n// Render the DOM representation of the text of a line. Also builds\n// up a 'line map', which points at the DOM nodes that represent\n// specific stretches of text, and is used by the measuring code.\n// The returned object contains the DOM node, this map, and\n// information about line-wide styles that were set by the mode.\nfunction buildLineContent(cm, lineView) {\n // The padding-right forces the element to have a 'border', which\n // is needed on Webkit to be able to get line-level bounding\n // rectangles for it (in measureChar).\n var content = eltP(\"span\", null, null, webkit ? \"padding-right: .1px\" : null)\n var builder = {pre: eltP(\"pre\", [content], \"CodeMirror-line\"), content: content,\n col: 0, pos: 0, cm: cm,\n trailingSpace: false,\n splitSpaces: (ie || webkit) && cm.getOption(\"lineWrapping\")}\n lineView.measure = {}\n\n // Iterate over the logical lines that make up this visual line.\n for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {\n var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0)\n builder.pos = 0\n builder.addToken = buildToken\n // Optionally wire in some hacks into the token-rendering\n // algorithm, to deal with browser quirks.\n if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction)))\n { builder.addToken = buildTokenBadBidi(builder.addToken, order) }\n builder.map = []\n var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line)\n insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate))\n if (line.styleClasses) {\n if (line.styleClasses.bgClass)\n { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || \"\") }\n if (line.styleClasses.textClass)\n { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || \"\") }\n }\n\n // Ensure at least a single node is present, for measuring.\n if (builder.map.length == 0)\n { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))) }\n\n // Store the map and a cache object for the current logical line\n if (i == 0) {\n lineView.measure.map = builder.map\n lineView.measure.cache = {}\n } else {\n ;(lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map)\n ;(lineView.measure.caches || (lineView.measure.caches = [])).push({})\n }\n }\n\n // See issue #2901\n if (webkit) {\n var last = builder.content.lastChild\n if (/\\bcm-tab\\b/.test(last.className) || (last.querySelector && last.querySelector(\".cm-tab\")))\n { builder.content.className = \"cm-tab-wrap-hack\" }\n }\n\n signal(cm, \"renderLine\", cm, lineView.line, builder.pre)\n if (builder.pre.className)\n { builder.textClass = joinClasses(builder.pre.className, builder.textClass || \"\") }\n\n return builder\n}\n\nfunction defaultSpecialCharPlaceholder(ch) {\n var token = elt(\"span\", \"\\u2022\", \"cm-invalidchar\")\n token.title = \"\\\\u\" + ch.charCodeAt(0).toString(16)\n token.setAttribute(\"aria-label\", token.title)\n return token\n}\n\n// Build up the DOM representation for a single token, and add it to\n// the line map. Takes care to render special characters separately.\nfunction buildToken(builder, text, style, startStyle, endStyle, title, css) {\n if (!text) { return }\n var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text\n var special = builder.cm.state.specialChars, mustWrap = false\n var content\n if (!special.test(text)) {\n builder.col += text.length\n content = document.createTextNode(displayText)\n builder.map.push(builder.pos, builder.pos + text.length, content)\n if (ie && ie_version < 9) { mustWrap = true }\n builder.pos += text.length\n } else {\n content = document.createDocumentFragment()\n var pos = 0\n while (true) {\n special.lastIndex = pos\n var m = special.exec(text)\n var skipped = m ? m.index - pos : text.length - pos\n if (skipped) {\n var txt = document.createTextNode(displayText.slice(pos, pos + skipped))\n if (ie && ie_version < 9) { content.appendChild(elt(\"span\", [txt])) }\n else { content.appendChild(txt) }\n builder.map.push(builder.pos, builder.pos + skipped, txt)\n builder.col += skipped\n builder.pos += skipped\n }\n if (!m) { break }\n pos += skipped + 1\n var txt$1 = (void 0)\n if (m[0] == \"\\t\") {\n var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize\n txt$1 = content.appendChild(elt(\"span\", spaceStr(tabWidth), \"cm-tab\"))\n txt$1.setAttribute(\"role\", \"presentation\")\n txt$1.setAttribute(\"cm-text\", \"\\t\")\n builder.col += tabWidth\n } else if (m[0] == \"\\r\" || m[0] == \"\\n\") {\n txt$1 = content.appendChild(elt(\"span\", m[0] == \"\\r\" ? \"\\u240d\" : \"\\u2424\", \"cm-invalidchar\"))\n txt$1.setAttribute(\"cm-text\", m[0])\n builder.col += 1\n } else {\n txt$1 = builder.cm.options.specialCharPlaceholder(m[0])\n txt$1.setAttribute(\"cm-text\", m[0])\n if (ie && ie_version < 9) { content.appendChild(elt(\"span\", [txt$1])) }\n else { content.appendChild(txt$1) }\n builder.col += 1\n }\n builder.map.push(builder.pos, builder.pos + 1, txt$1)\n builder.pos++\n }\n }\n builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32\n if (style || startStyle || endStyle || mustWrap || css) {\n var fullStyle = style || \"\"\n if (startStyle) { fullStyle += startStyle }\n if (endStyle) { fullStyle += endStyle }\n var token = elt(\"span\", [content], fullStyle, css)\n if (title) { token.title = title }\n return builder.content.appendChild(token)\n }\n builder.content.appendChild(content)\n}\n\nfunction splitSpaces(text, trailingBefore) {\n if (text.length > 1 && !/ /.test(text)) { return text }\n var spaceBefore = trailingBefore, result = \"\"\n for (var i = 0; i < text.length; i++) {\n var ch = text.charAt(i)\n if (ch == \" \" && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32))\n { ch = \"\\u00a0\" }\n result += ch\n spaceBefore = ch == \" \"\n }\n return result\n}\n\n// Work around nonsense dimensions being reported for stretches of\n// right-to-left text.\nfunction buildTokenBadBidi(inner, order) {\n return function (builder, text, style, startStyle, endStyle, title, css) {\n style = style ? style + \" cm-force-border\" : \"cm-force-border\"\n var start = builder.pos, end = start + text.length\n for (;;) {\n // Find the part that overlaps with the start of this text\n var part = (void 0)\n for (var i = 0; i < order.length; i++) {\n part = order[i]\n if (part.to > start && part.from <= start) { break }\n }\n if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, title, css) }\n inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css)\n startStyle = null\n text = text.slice(part.to - start)\n start = part.to\n }\n }\n}\n\nfunction buildCollapsedSpan(builder, size, marker, ignoreWidget) {\n var widget = !ignoreWidget && marker.widgetNode\n if (widget) { builder.map.push(builder.pos, builder.pos + size, widget) }\n if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {\n if (!widget)\n { widget = builder.content.appendChild(document.createElement(\"span\")) }\n widget.setAttribute(\"cm-marker\", marker.id)\n }\n if (widget) {\n builder.cm.display.input.setUneditable(widget)\n builder.content.appendChild(widget)\n }\n builder.pos += size\n builder.trailingSpace = false\n}\n\n// Outputs a number of spans to make up a line, taking highlighting\n// and marked text into account.\nfunction insertLineContent(line, builder, styles) {\n var spans = line.markedSpans, allText = line.text, at = 0\n if (!spans) {\n for (var i$1 = 1; i$1 < styles.length; i$1+=2)\n { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)) }\n return\n }\n\n var len = allText.length, pos = 0, i = 1, text = \"\", style, css\n var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed\n for (;;) {\n if (nextChange == pos) { // Update current marker set\n spanStyle = spanEndStyle = spanStartStyle = title = css = \"\"\n collapsed = null; nextChange = Infinity\n var foundBookmarks = [], endStyles = (void 0)\n for (var j = 0; j < spans.length; ++j) {\n var sp = spans[j], m = sp.marker\n if (m.type == \"bookmark\" && sp.from == pos && m.widgetNode) {\n foundBookmarks.push(m)\n } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {\n if (sp.to != null && sp.to != pos && nextChange > sp.to) {\n nextChange = sp.to\n spanEndStyle = \"\"\n }\n if (m.className) { spanStyle += \" \" + m.className }\n if (m.css) { css = (css ? css + \";\" : \"\") + m.css }\n if (m.startStyle && sp.from == pos) { spanStartStyle += \" \" + m.startStyle }\n if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to) }\n if (m.title && !title) { title = m.title }\n if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))\n { collapsed = sp }\n } else if (sp.from > pos && nextChange > sp.from) {\n nextChange = sp.from\n }\n }\n if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2)\n { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += \" \" + endStyles[j$1] } } }\n\n if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2)\n { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]) } }\n if (collapsed && (collapsed.from || 0) == pos) {\n buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,\n collapsed.marker, collapsed.from == null)\n if (collapsed.to == null) { return }\n if (collapsed.to == pos) { collapsed = false }\n }\n }\n if (pos >= len) { break }\n\n var upto = Math.min(len, nextChange)\n while (true) {\n if (text) {\n var end = pos + text.length\n if (!collapsed) {\n var tokenText = end > upto ? text.slice(0, upto - pos) : text\n builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,\n spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : \"\", title, css)\n }\n if (end >= upto) {text = text.slice(upto - pos); pos = upto; break}\n pos = end\n spanStartStyle = \"\"\n }\n text = allText.slice(at, at = styles[i++])\n style = interpretTokenStyle(styles[i++], builder.cm.options)\n }\n }\n}\n\n\n// These objects are used to represent the visible (currently drawn)\n// part of the document. A LineView may correspond to multiple\n// logical lines, if those are connected by collapsed ranges.\nfunction LineView(doc, line, lineN) {\n // The starting line\n this.line = line\n // Continuing lines, if any\n this.rest = visualLineContinued(line)\n // Number of logical lines in this visual line\n this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1\n this.node = this.text = null\n this.hidden = lineIsHidden(doc, line)\n}\n\n// Create a range of LineView objects for the given lines.\nfunction buildViewArray(cm, from, to) {\n var array = [], nextPos\n for (var pos = from; pos < to; pos = nextPos) {\n var view = new LineView(cm.doc, getLine(cm.doc, pos), pos)\n nextPos = pos + view.size\n array.push(view)\n }\n return array\n}\n\nvar operationGroup = null\n\nfunction pushOperation(op) {\n if (operationGroup) {\n operationGroup.ops.push(op)\n } else {\n op.ownsGroup = operationGroup = {\n ops: [op],\n delayedCallbacks: []\n }\n }\n}\n\nfunction fireCallbacksForOps(group) {\n // Calls delayed callbacks and cursorActivity handlers until no\n // new ones appear\n var callbacks = group.delayedCallbacks, i = 0\n do {\n for (; i < callbacks.length; i++)\n { callbacks[i].call(null) }\n for (var j = 0; j < group.ops.length; j++) {\n var op = group.ops[j]\n if (op.cursorActivityHandlers)\n { while (op.cursorActivityCalled < op.cursorActivityHandlers.length)\n { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm) } }\n }\n } while (i < callbacks.length)\n}\n\nfunction finishOperation(op, endCb) {\n var group = op.ownsGroup\n if (!group) { return }\n\n try { fireCallbacksForOps(group) }\n finally {\n operationGroup = null\n endCb(group)\n }\n}\n\nvar orphanDelayedCallbacks = null\n\n// Often, we want to signal events at a point where we are in the\n// middle of some work, but don't want the handler to start calling\n// other methods on the editor, which might be in an inconsistent\n// state or simply not expect any other events to happen.\n// signalLater looks whether there are any handlers, and schedules\n// them to be executed when the last operation ends, or, if no\n// operation is active, when a timeout fires.\nfunction signalLater(emitter, type /*, values...*/) {\n var arr = getHandlers(emitter, type)\n if (!arr.length) { return }\n var args = Array.prototype.slice.call(arguments, 2), list\n if (operationGroup) {\n list = operationGroup.delayedCallbacks\n } else if (orphanDelayedCallbacks) {\n list = orphanDelayedCallbacks\n } else {\n list = orphanDelayedCallbacks = []\n setTimeout(fireOrphanDelayed, 0)\n }\n var loop = function ( i ) {\n list.push(function () { return arr[i].apply(null, args); })\n };\n\n for (var i = 0; i < arr.length; ++i)\n loop( i );\n}\n\nfunction fireOrphanDelayed() {\n var delayed = orphanDelayedCallbacks\n orphanDelayedCallbacks = null\n for (var i = 0; i < delayed.length; ++i) { delayed[i]() }\n}\n\n// When an aspect of a line changes, a string is added to\n// lineView.changes. This updates the relevant part of the line's\n// DOM structure.\nfunction updateLineForChanges(cm, lineView, lineN, dims) {\n for (var j = 0; j < lineView.changes.length; j++) {\n var type = lineView.changes[j]\n if (type == \"text\") { updateLineText(cm, lineView) }\n else if (type == \"gutter\") { updateLineGutter(cm, lineView, lineN, dims) }\n else if (type == \"class\") { updateLineClasses(cm, lineView) }\n else if (type == \"widget\") { updateLineWidgets(cm, lineView, dims) }\n }\n lineView.changes = null\n}\n\n// Lines with gutter elements, widgets or a background class need to\n// be wrapped, and have the extra elements added to the wrapper div\nfunction ensureLineWrapped(lineView) {\n if (lineView.node == lineView.text) {\n lineView.node = elt(\"div\", null, null, \"position: relative\")\n if (lineView.text.parentNode)\n { lineView.text.parentNode.replaceChild(lineView.node, lineView.text) }\n lineView.node.appendChild(lineView.text)\n if (ie && ie_version < 8) { lineView.node.style.zIndex = 2 }\n }\n return lineView.node\n}\n\nfunction updateLineBackground(cm, lineView) {\n var cls = lineView.bgClass ? lineView.bgClass + \" \" + (lineView.line.bgClass || \"\") : lineView.line.bgClass\n if (cls) { cls += \" CodeMirror-linebackground\" }\n if (lineView.background) {\n if (cls) { lineView.background.className = cls }\n else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null }\n } else if (cls) {\n var wrap = ensureLineWrapped(lineView)\n lineView.background = wrap.insertBefore(elt(\"div\", null, cls), wrap.firstChild)\n cm.display.input.setUneditable(lineView.background)\n }\n}\n\n// Wrapper around buildLineContent which will reuse the structure\n// in display.externalMeasured when possible.\nfunction getLineContent(cm, lineView) {\n var ext = cm.display.externalMeasured\n if (ext && ext.line == lineView.line) {\n cm.display.externalMeasured = null\n lineView.measure = ext.measure\n return ext.built\n }\n return buildLineContent(cm, lineView)\n}\n\n// Redraw the line's text. Interacts with the background and text\n// classes because the mode may output tokens that influence these\n// classes.\nfunction updateLineText(cm, lineView) {\n var cls = lineView.text.className\n var built = getLineContent(cm, lineView)\n if (lineView.text == lineView.node) { lineView.node = built.pre }\n lineView.text.parentNode.replaceChild(built.pre, lineView.text)\n lineView.text = built.pre\n if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {\n lineView.bgClass = built.bgClass\n lineView.textClass = built.textClass\n updateLineClasses(cm, lineView)\n } else if (cls) {\n lineView.text.className = cls\n }\n}\n\nfunction updateLineClasses(cm, lineView) {\n updateLineBackground(cm, lineView)\n if (lineView.line.wrapClass)\n { ensureLineWrapped(lineView).className = lineView.line.wrapClass }\n else if (lineView.node != lineView.text)\n { lineView.node.className = \"\" }\n var textClass = lineView.textClass ? lineView.textClass + \" \" + (lineView.line.textClass || \"\") : lineView.line.textClass\n lineView.text.className = textClass || \"\"\n}\n\nfunction updateLineGutter(cm, lineView, lineN, dims) {\n if (lineView.gutter) {\n lineView.node.removeChild(lineView.gutter)\n lineView.gutter = null\n }\n if (lineView.gutterBackground) {\n lineView.node.removeChild(lineView.gutterBackground)\n lineView.gutterBackground = null\n }\n if (lineView.line.gutterClass) {\n var wrap = ensureLineWrapped(lineView)\n lineView.gutterBackground = elt(\"div\", null, \"CodeMirror-gutter-background \" + lineView.line.gutterClass,\n (\"left: \" + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + \"px; width: \" + (dims.gutterTotalWidth) + \"px\"))\n cm.display.input.setUneditable(lineView.gutterBackground)\n wrap.insertBefore(lineView.gutterBackground, lineView.text)\n }\n var markers = lineView.line.gutterMarkers\n if (cm.options.lineNumbers || markers) {\n var wrap$1 = ensureLineWrapped(lineView)\n var gutterWrap = lineView.gutter = elt(\"div\", null, \"CodeMirror-gutter-wrapper\", (\"left: \" + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + \"px\"))\n cm.display.input.setUneditable(gutterWrap)\n wrap$1.insertBefore(gutterWrap, lineView.text)\n if (lineView.line.gutterClass)\n { gutterWrap.className += \" \" + lineView.line.gutterClass }\n if (cm.options.lineNumbers && (!markers || !markers[\"CodeMirror-linenumbers\"]))\n { lineView.lineNumber = gutterWrap.appendChild(\n elt(\"div\", lineNumberFor(cm.options, lineN),\n \"CodeMirror-linenumber CodeMirror-gutter-elt\",\n (\"left: \" + (dims.gutterLeft[\"CodeMirror-linenumbers\"]) + \"px; width: \" + (cm.display.lineNumInnerWidth) + \"px\"))) }\n if (markers) { for (var k = 0; k < cm.options.gutters.length; ++k) {\n var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id]\n if (found)\n { gutterWrap.appendChild(elt(\"div\", [found], \"CodeMirror-gutter-elt\",\n (\"left: \" + (dims.gutterLeft[id]) + \"px; width: \" + (dims.gutterWidth[id]) + \"px\"))) }\n } }\n }\n}\n\nfunction updateLineWidgets(cm, lineView, dims) {\n if (lineView.alignable) { lineView.alignable = null }\n for (var node = lineView.node.firstChild, next = (void 0); node; node = next) {\n next = node.nextSibling\n if (node.className == \"CodeMirror-linewidget\")\n { lineView.node.removeChild(node) }\n }\n insertLineWidgets(cm, lineView, dims)\n}\n\n// Build a line's DOM representation from scratch\nfunction buildLineElement(cm, lineView, lineN, dims) {\n var built = getLineContent(cm, lineView)\n lineView.text = lineView.node = built.pre\n if (built.bgClass) { lineView.bgClass = built.bgClass }\n if (built.textClass) { lineView.textClass = built.textClass }\n\n updateLineClasses(cm, lineView)\n updateLineGutter(cm, lineView, lineN, dims)\n insertLineWidgets(cm, lineView, dims)\n return lineView.node\n}\n\n// A lineView may contain multiple logical lines (when merged by\n// collapsed spans). The widgets for all of them need to be drawn.\nfunction insertLineWidgets(cm, lineView, dims) {\n insertLineWidgetsFor(cm, lineView.line, lineView, dims, true)\n if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)\n { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false) } }\n}\n\nfunction insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {\n if (!line.widgets) { return }\n var wrap = ensureLineWrapped(lineView)\n for (var i = 0, ws = line.widgets; i < ws.length; ++i) {\n var widget = ws[i], node = elt(\"div\", [widget.node], \"CodeMirror-linewidget\")\n if (!widget.handleMouseEvents) { node.setAttribute(\"cm-ignore-events\", \"true\") }\n positionLineWidget(widget, node, lineView, dims)\n cm.display.input.setUneditable(node)\n if (allowAbove && widget.above)\n { wrap.insertBefore(node, lineView.gutter || lineView.text) }\n else\n { wrap.appendChild(node) }\n signalLater(widget, \"redraw\")\n }\n}\n\nfunction positionLineWidget(widget, node, lineView, dims) {\n if (widget.noHScroll) {\n ;(lineView.alignable || (lineView.alignable = [])).push(node)\n var width = dims.wrapperWidth\n node.style.left = dims.fixedPos + \"px\"\n if (!widget.coverGutter) {\n width -= dims.gutterTotalWidth\n node.style.paddingLeft = dims.gutterTotalWidth + \"px\"\n }\n node.style.width = width + \"px\"\n }\n if (widget.coverGutter) {\n node.style.zIndex = 5\n node.style.position = \"relative\"\n if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + \"px\" }\n }\n}\n\nfunction widgetHeight(widget) {\n if (widget.height != null) { return widget.height }\n var cm = widget.doc.cm\n if (!cm) { return 0 }\n if (!contains(document.body, widget.node)) {\n var parentStyle = \"position: relative;\"\n if (widget.coverGutter)\n { parentStyle += \"margin-left: -\" + cm.display.gutters.offsetWidth + \"px;\" }\n if (widget.noHScroll)\n { parentStyle += \"width: \" + cm.display.wrapper.clientWidth + \"px;\" }\n removeChildrenAndAdd(cm.display.measure, elt(\"div\", [widget.node], null, parentStyle))\n }\n return widget.height = widget.node.parentNode.offsetHeight\n}\n\n// Return true when the given mouse event happened in a widget\nfunction eventInWidget(display, e) {\n for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {\n if (!n || (n.nodeType == 1 && n.getAttribute(\"cm-ignore-events\") == \"true\") ||\n (n.parentNode == display.sizer && n != display.mover))\n { return true }\n }\n}\n\n// POSITION MEASUREMENT\n\nfunction paddingTop(display) {return display.lineSpace.offsetTop}\nfunction paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight}\nfunction paddingH(display) {\n if (display.cachedPaddingH) { return display.cachedPaddingH }\n var e = removeChildrenAndAdd(display.measure, elt(\"pre\", \"x\"))\n var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle\n var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)}\n if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data }\n return data\n}\n\nfunction scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth }\nfunction displayWidth(cm) {\n return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth\n}\nfunction displayHeight(cm) {\n return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight\n}\n\n// Ensure the lineView.wrapping.heights array is populated. This is\n// an array of bottom offsets for the lines that make up a drawn\n// line. When lineWrapping is on, there might be more than one\n// height.\nfunction ensureLineHeights(cm, lineView, rect) {\n var wrapping = cm.options.lineWrapping\n var curWidth = wrapping && displayWidth(cm)\n if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {\n var heights = lineView.measure.heights = []\n if (wrapping) {\n lineView.measure.width = curWidth\n var rects = lineView.text.firstChild.getClientRects()\n for (var i = 0; i < rects.length - 1; i++) {\n var cur = rects[i], next = rects[i + 1]\n if (Math.abs(cur.bottom - next.bottom) > 2)\n { heights.push((cur.bottom + next.top) / 2 - rect.top) }\n }\n }\n heights.push(rect.bottom - rect.top)\n }\n}\n\n// Find a line map (mapping character offsets to text nodes) and a\n// measurement cache for the given line number. (A line view might\n// contain multiple lines when collapsed ranges are present.)\nfunction mapFromLineView(lineView, line, lineN) {\n if (lineView.line == line)\n { return {map: lineView.measure.map, cache: lineView.measure.cache} }\n for (var i = 0; i < lineView.rest.length; i++)\n { if (lineView.rest[i] == line)\n { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } }\n for (var i$1 = 0; i$1 < lineView.rest.length; i$1++)\n { if (lineNo(lineView.rest[i$1]) > lineN)\n { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } }\n}\n\n// Render a line into the hidden node display.externalMeasured. Used\n// when measurement is needed for a line that's not in the viewport.\nfunction updateExternalMeasurement(cm, line) {\n line = visualLine(line)\n var lineN = lineNo(line)\n var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN)\n view.lineN = lineN\n var built = view.built = buildLineContent(cm, view)\n view.text = built.pre\n removeChildrenAndAdd(cm.display.lineMeasure, built.pre)\n return view\n}\n\n// Get a {top, bottom, left, right} box (in line-local coordinates)\n// for a given character.\nfunction measureChar(cm, line, ch, bias) {\n return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias)\n}\n\n// Find a line view that corresponds to the given line number.\nfunction findViewForLine(cm, lineN) {\n if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)\n { return cm.display.view[findViewIndex(cm, lineN)] }\n var ext = cm.display.externalMeasured\n if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)\n { return ext }\n}\n\n// Measurement can be split in two steps, the set-up work that\n// applies to the whole line, and the measurement of the actual\n// character. Functions like coordsChar, that need to do a lot of\n// measurements in a row, can thus ensure that the set-up work is\n// only done once.\nfunction prepareMeasureForLine(cm, line) {\n var lineN = lineNo(line)\n var view = findViewForLine(cm, lineN)\n if (view && !view.text) {\n view = null\n } else if (view && view.changes) {\n updateLineForChanges(cm, view, lineN, getDimensions(cm))\n cm.curOp.forceUpdate = true\n }\n if (!view)\n { view = updateExternalMeasurement(cm, line) }\n\n var info = mapFromLineView(view, line, lineN)\n return {\n line: line, view: view, rect: null,\n map: info.map, cache: info.cache, before: info.before,\n hasHeights: false\n }\n}\n\n// Given a prepared measurement object, measures the position of an\n// actual character (or fetches it from the cache).\nfunction measureCharPrepared(cm, prepared, ch, bias, varHeight) {\n if (prepared.before) { ch = -1 }\n var key = ch + (bias || \"\"), found\n if (prepared.cache.hasOwnProperty(key)) {\n found = prepared.cache[key]\n } else {\n if (!prepared.rect)\n { prepared.rect = prepared.view.text.getBoundingClientRect() }\n if (!prepared.hasHeights) {\n ensureLineHeights(cm, prepared.view, prepared.rect)\n prepared.hasHeights = true\n }\n found = measureCharInner(cm, prepared, ch, bias)\n if (!found.bogus) { prepared.cache[key] = found }\n }\n return {left: found.left, right: found.right,\n top: varHeight ? found.rtop : found.top,\n bottom: varHeight ? found.rbottom : found.bottom}\n}\n\nvar nullRect = {left: 0, right: 0, top: 0, bottom: 0}\n\nfunction nodeAndOffsetInLineMap(map, ch, bias) {\n var node, start, end, collapse, mStart, mEnd\n // First, search the line map for the text node corresponding to,\n // or closest to, the target character.\n for (var i = 0; i < map.length; i += 3) {\n mStart = map[i]\n mEnd = map[i + 1]\n if (ch < mStart) {\n start = 0; end = 1\n collapse = \"left\"\n } else if (ch < mEnd) {\n start = ch - mStart\n end = start + 1\n } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {\n end = mEnd - mStart\n start = end - 1\n if (ch >= mEnd) { collapse = \"right\" }\n }\n if (start != null) {\n node = map[i + 2]\n if (mStart == mEnd && bias == (node.insertLeft ? \"left\" : \"right\"))\n { collapse = bias }\n if (bias == \"left\" && start == 0)\n { while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {\n node = map[(i -= 3) + 2]\n collapse = \"left\"\n } }\n if (bias == \"right\" && start == mEnd - mStart)\n { while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {\n node = map[(i += 3) + 2]\n collapse = \"right\"\n } }\n break\n }\n }\n return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd}\n}\n\nfunction getUsefulRect(rects, bias) {\n var rect = nullRect\n if (bias == \"left\") { for (var i = 0; i < rects.length; i++) {\n if ((rect = rects[i]).left != rect.right) { break }\n } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) {\n if ((rect = rects[i$1]).left != rect.right) { break }\n } }\n return rect\n}\n\nfunction measureCharInner(cm, prepared, ch, bias) {\n var place = nodeAndOffsetInLineMap(prepared.map, ch, bias)\n var node = place.node, start = place.start, end = place.end, collapse = place.collapse\n\n var rect\n if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.\n for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned\n while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start }\n while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end }\n if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart)\n { rect = node.parentNode.getBoundingClientRect() }\n else\n { rect = getUsefulRect(range(node, start, end).getClientRects(), bias) }\n if (rect.left || rect.right || start == 0) { break }\n end = start\n start = start - 1\n collapse = \"right\"\n }\n if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect) }\n } else { // If it is a widget, simply get the box for the whole widget.\n if (start > 0) { collapse = bias = \"right\" }\n var rects\n if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)\n { rect = rects[bias == \"right\" ? rects.length - 1 : 0] }\n else\n { rect = node.getBoundingClientRect() }\n }\n if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {\n var rSpan = node.parentNode.getClientRects()[0]\n if (rSpan)\n { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom} }\n else\n { rect = nullRect }\n }\n\n var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top\n var mid = (rtop + rbot) / 2\n var heights = prepared.view.measure.heights\n var i = 0\n for (; i < heights.length - 1; i++)\n { if (mid < heights[i]) { break } }\n var top = i ? heights[i - 1] : 0, bot = heights[i]\n var result = {left: (collapse == \"right\" ? rect.right : rect.left) - prepared.rect.left,\n right: (collapse == \"left\" ? rect.left : rect.right) - prepared.rect.left,\n top: top, bottom: bot}\n if (!rect.left && !rect.right) { result.bogus = true }\n if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot }\n\n return result\n}\n\n// Work around problem with bounding client rects on ranges being\n// returned incorrectly when zoomed on IE10 and below.\nfunction maybeUpdateRectForZooming(measure, rect) {\n if (!window.screen || screen.logicalXDPI == null ||\n screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))\n { return rect }\n var scaleX = screen.logicalXDPI / screen.deviceXDPI\n var scaleY = screen.logicalYDPI / screen.deviceYDPI\n return {left: rect.left * scaleX, right: rect.right * scaleX,\n top: rect.top * scaleY, bottom: rect.bottom * scaleY}\n}\n\nfunction clearLineMeasurementCacheFor(lineView) {\n if (lineView.measure) {\n lineView.measure.cache = {}\n lineView.measure.heights = null\n if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)\n { lineView.measure.caches[i] = {} } }\n }\n}\n\nfunction clearLineMeasurementCache(cm) {\n cm.display.externalMeasure = null\n removeChildren(cm.display.lineMeasure)\n for (var i = 0; i < cm.display.view.length; i++)\n { clearLineMeasurementCacheFor(cm.display.view[i]) }\n}\n\nfunction clearCaches(cm) {\n clearLineMeasurementCache(cm)\n cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null\n if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true }\n cm.display.lineNumChars = null\n}\n\nfunction pageScrollX() {\n // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206\n // which causes page_Offset and bounding client rects to use\n // different reference viewports and invalidate our calculations.\n if (chrome && android) { return -(document.body.getBoundingClientRect().left - parseInt(getComputedStyle(document.body).marginLeft)) }\n return window.pageXOffset || (document.documentElement || document.body).scrollLeft\n}\nfunction pageScrollY() {\n if (chrome && android) { return -(document.body.getBoundingClientRect().top - parseInt(getComputedStyle(document.body).marginTop)) }\n return window.pageYOffset || (document.documentElement || document.body).scrollTop\n}\n\n// Converts a {top, bottom, left, right} box from line-local\n// coordinates into another coordinate system. Context may be one of\n// \"line\", \"div\" (display.lineDiv), \"local\"./null (editor), \"window\",\n// or \"page\".\nfunction intoCoordSystem(cm, lineObj, rect, context, includeWidgets) {\n if (!includeWidgets && lineObj.widgets) { for (var i = 0; i < lineObj.widgets.length; ++i) { if (lineObj.widgets[i].above) {\n var size = widgetHeight(lineObj.widgets[i])\n rect.top += size; rect.bottom += size\n } } }\n if (context == \"line\") { return rect }\n if (!context) { context = \"local\" }\n var yOff = heightAtLine(lineObj)\n if (context == \"local\") { yOff += paddingTop(cm.display) }\n else { yOff -= cm.display.viewOffset }\n if (context == \"page\" || context == \"window\") {\n var lOff = cm.display.lineSpace.getBoundingClientRect()\n yOff += lOff.top + (context == \"window\" ? 0 : pageScrollY())\n var xOff = lOff.left + (context == \"window\" ? 0 : pageScrollX())\n rect.left += xOff; rect.right += xOff\n }\n rect.top += yOff; rect.bottom += yOff\n return rect\n}\n\n// Coverts a box from \"div\" coords to another coordinate system.\n// Context may be \"window\", \"page\", \"div\", or \"local\"./null.\nfunction fromCoordSystem(cm, coords, context) {\n if (context == \"div\") { return coords }\n var left = coords.left, top = coords.top\n // First move into \"page\" coordinate system\n if (context == \"page\") {\n left -= pageScrollX()\n top -= pageScrollY()\n } else if (context == \"local\" || !context) {\n var localBox = cm.display.sizer.getBoundingClientRect()\n left += localBox.left\n top += localBox.top\n }\n\n var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect()\n return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}\n}\n\nfunction charCoords(cm, pos, context, lineObj, bias) {\n if (!lineObj) { lineObj = getLine(cm.doc, pos.line) }\n return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context)\n}\n\n// Returns a box for a given cursor position, which may have an\n// 'other' property containing the position of the secondary cursor\n// on a bidi boundary.\n// A cursor Pos(line, char, \"before\") is on the same visual line as `char - 1`\n// and after `char - 1` in writing order of `char - 1`\n// A cursor Pos(line, char, \"after\") is on the same visual line as `char`\n// and before `char` in writing order of `char`\n// Examples (upper-case letters are RTL, lower-case are LTR):\n// Pos(0, 1, ...)\n// before after\n// ab a|b a|b\n// aB a|B aB|\n// Ab |Ab A|b\n// AB B|A B|A\n// Every position after the last character on a line is considered to stick\n// to the last character on the line.\nfunction cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {\n lineObj = lineObj || getLine(cm.doc, pos.line)\n if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj) }\n function get(ch, right) {\n var m = measureCharPrepared(cm, preparedMeasure, ch, right ? \"right\" : \"left\", varHeight)\n if (right) { m.left = m.right; } else { m.right = m.left }\n return intoCoordSystem(cm, lineObj, m, context)\n }\n var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky\n if (ch >= lineObj.text.length) {\n ch = lineObj.text.length\n sticky = \"before\"\n } else if (ch <= 0) {\n ch = 0\n sticky = \"after\"\n }\n if (!order) { return get(sticky == \"before\" ? ch - 1 : ch, sticky == \"before\") }\n\n function getBidi(ch, partPos, invert) {\n var part = order[partPos], right = (part.level % 2) != 0\n return get(invert ? ch - 1 : ch, right != invert)\n }\n var partPos = getBidiPartAt(order, ch, sticky)\n var other = bidiOther\n var val = getBidi(ch, partPos, sticky == \"before\")\n if (other != null) { val.other = getBidi(ch, other, sticky != \"before\") }\n return val\n}\n\n// Used to cheaply estimate the coordinates for a position. Used for\n// intermediate scroll updates.\nfunction estimateCoords(cm, pos) {\n var left = 0\n pos = clipPos(cm.doc, pos)\n if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch }\n var lineObj = getLine(cm.doc, pos.line)\n var top = heightAtLine(lineObj) + paddingTop(cm.display)\n return {left: left, right: left, top: top, bottom: top + lineObj.height}\n}\n\n// Positions returned by coordsChar contain some extra information.\n// xRel is the relative x position of the input coordinates compared\n// to the found position (so xRel > 0 means the coordinates are to\n// the right of the character position, for example). When outside\n// is true, that means the coordinates lie outside the line's\n// vertical range.\nfunction PosWithInfo(line, ch, sticky, outside, xRel) {\n var pos = Pos(line, ch, sticky)\n pos.xRel = xRel\n if (outside) { pos.outside = true }\n return pos\n}\n\n// Compute the character position closest to the given coordinates.\n// Input must be lineSpace-local (\"div\" coordinate system).\nfunction coordsChar(cm, x, y) {\n var doc = cm.doc\n y += cm.display.viewOffset\n if (y < 0) { return PosWithInfo(doc.first, 0, null, true, -1) }\n var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1\n if (lineN > last)\n { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, true, 1) }\n if (x < 0) { x = 0 }\n\n var lineObj = getLine(doc, lineN)\n for (;;) {\n var found = coordsCharInner(cm, lineObj, lineN, x, y)\n var merged = collapsedSpanAtEnd(lineObj)\n var mergedPos = merged && merged.find(0, true)\n if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))\n { lineN = lineNo(lineObj = mergedPos.to.line) }\n else\n { return found }\n }\n}\n\nfunction wrappedLineExtent(cm, lineObj, preparedMeasure, y) {\n var measure = function (ch) { return intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, ch), \"line\"); }\n var end = lineObj.text.length\n var begin = findFirst(function (ch) { return measure(ch - 1).bottom <= y; }, end, 0)\n end = findFirst(function (ch) { return measure(ch).top > y; }, begin, end)\n return {begin: begin, end: end}\n}\n\nfunction wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) {\n var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), \"line\").top\n return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop)\n}\n\nfunction coordsCharInner(cm, lineObj, lineNo, x, y) {\n y -= heightAtLine(lineObj)\n var begin = 0, end = lineObj.text.length\n var preparedMeasure = prepareMeasureForLine(cm, lineObj)\n var pos\n var order = getOrder(lineObj, cm.doc.direction)\n if (order) {\n if (cm.options.lineWrapping) {\n ;var assign;\n ((assign = wrappedLineExtent(cm, lineObj, preparedMeasure, y), begin = assign.begin, end = assign.end, assign))\n }\n pos = new Pos(lineNo, Math.floor(begin + (end - begin) / 2))\n var beginLeft = cursorCoords(cm, pos, \"line\", lineObj, preparedMeasure).left\n var dir = beginLeft < x ? 1 : -1\n var prevDiff, diff = beginLeft - x, prevPos\n var steps = Math.ceil((end - begin) / 4)\n outer: do {\n prevDiff = diff\n prevPos = pos\n var i = 0\n for (; i < steps; ++i) {\n var prevPos$1 = pos\n pos = moveVisually(cm, lineObj, pos, dir)\n if (pos == null || pos.ch < begin || end <= (pos.sticky == \"before\" ? pos.ch - 1 : pos.ch)) {\n pos = prevPos$1\n break outer\n }\n }\n diff = cursorCoords(cm, pos, \"line\", lineObj, preparedMeasure).left - x\n if (steps > 1) {\n var diff_change_per_step = Math.abs(diff - prevDiff) / steps\n steps = Math.min(steps, Math.ceil(Math.abs(diff) / diff_change_per_step))\n dir = diff < 0 ? 1 : -1\n }\n } while (diff != 0 && (steps > 1 || ((dir < 0) != (diff < 0) && (Math.abs(diff) <= Math.abs(prevDiff)))))\n if (Math.abs(diff) > Math.abs(prevDiff)) {\n if ((diff < 0) == (prevDiff < 0)) { throw new Error(\"Broke out of infinite loop in coordsCharInner\") }\n pos = prevPos\n }\n } else {\n var ch = findFirst(function (ch) {\n var box = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, ch), \"line\")\n if (box.top > y) {\n // For the cursor stickiness\n end = Math.min(ch, end)\n return true\n }\n else if (box.bottom <= y) { return false }\n else if (box.left > x) { return true }\n else if (box.right < x) { return false }\n else { return (x - box.left < box.right - x) }\n }, begin, end)\n ch = skipExtendingChars(lineObj.text, ch, 1)\n pos = new Pos(lineNo, ch, ch == end ? \"before\" : \"after\")\n }\n var coords = cursorCoords(cm, pos, \"line\", lineObj, preparedMeasure)\n if (y < coords.top || coords.bottom < y) { pos.outside = true }\n pos.xRel = x < coords.left ? -1 : (x > coords.right ? 1 : 0)\n return pos\n}\n\nvar measureText\n// Compute the default text height.\nfunction textHeight(display) {\n if (display.cachedTextHeight != null) { return display.cachedTextHeight }\n if (measureText == null) {\n measureText = elt(\"pre\")\n // Measure a bunch of lines, for browsers that compute\n // fractional heights.\n for (var i = 0; i < 49; ++i) {\n measureText.appendChild(document.createTextNode(\"x\"))\n measureText.appendChild(elt(\"br\"))\n }\n measureText.appendChild(document.createTextNode(\"x\"))\n }\n removeChildrenAndAdd(display.measure, measureText)\n var height = measureText.offsetHeight / 50\n if (height > 3) { display.cachedTextHeight = height }\n removeChildren(display.measure)\n return height || 1\n}\n\n// Compute the default character width.\nfunction charWidth(display) {\n if (display.cachedCharWidth != null) { return display.cachedCharWidth }\n var anchor = elt(\"span\", \"xxxxxxxxxx\")\n var pre = elt(\"pre\", [anchor])\n removeChildrenAndAdd(display.measure, pre)\n var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10\n if (width > 2) { display.cachedCharWidth = width }\n return width || 10\n}\n\n// Do a bulk-read of the DOM positions and sizes needed to draw the\n// view, so that we don't interleave reading and writing to the DOM.\nfunction getDimensions(cm) {\n var d = cm.display, left = {}, width = {}\n var gutterLeft = d.gutters.clientLeft\n for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {\n left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft\n width[cm.options.gutters[i]] = n.clientWidth\n }\n return {fixedPos: compensateForHScroll(d),\n gutterTotalWidth: d.gutters.offsetWidth,\n gutterLeft: left,\n gutterWidth: width,\n wrapperWidth: d.wrapper.clientWidth}\n}\n\n// Computes display.scroller.scrollLeft + display.gutters.offsetWidth,\n// but using getBoundingClientRect to get a sub-pixel-accurate\n// result.\nfunction compensateForHScroll(display) {\n return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left\n}\n\n// Returns a function that estimates the height of a line, to use as\n// first approximation until the line becomes visible (and is thus\n// properly measurable).\nfunction estimateHeight(cm) {\n var th = textHeight(cm.display), wrapping = cm.options.lineWrapping\n var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3)\n return function (line) {\n if (lineIsHidden(cm.doc, line)) { return 0 }\n\n var widgetsHeight = 0\n if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) {\n if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height }\n } }\n\n if (wrapping)\n { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th }\n else\n { return widgetsHeight + th }\n }\n}\n\nfunction estimateLineHeights(cm) {\n var doc = cm.doc, est = estimateHeight(cm)\n doc.iter(function (line) {\n var estHeight = est(line)\n if (estHeight != line.height) { updateLineHeight(line, estHeight) }\n })\n}\n\n// Given a mouse event, find the corresponding position. If liberal\n// is false, it checks whether a gutter or scrollbar was clicked,\n// and returns null if it was. forRect is used by rectangular\n// selections, and tries to estimate a character position even for\n// coordinates beyond the right of the text.\nfunction posFromMouse(cm, e, liberal, forRect) {\n var display = cm.display\n if (!liberal && e_target(e).getAttribute(\"cm-not-content\") == \"true\") { return null }\n\n var x, y, space = display.lineSpace.getBoundingClientRect()\n // Fails unpredictably on IE[67] when mouse is dragged around quickly.\n try { x = e.clientX - space.left; y = e.clientY - space.top }\n catch (e) { return null }\n var coords = coordsChar(cm, x, y), line\n if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {\n var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length\n coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff))\n }\n return coords\n}\n\n// Find the view element corresponding to a given line. Return null\n// when the line isn't visible.\nfunction findViewIndex(cm, n) {\n if (n >= cm.display.viewTo) { return null }\n n -= cm.display.viewFrom\n if (n < 0) { return null }\n var view = cm.display.view\n for (var i = 0; i < view.length; i++) {\n n -= view[i].size\n if (n < 0) { return i }\n }\n}\n\nfunction updateSelection(cm) {\n cm.display.input.showSelection(cm.display.input.prepareSelection())\n}\n\nfunction prepareSelection(cm, primary) {\n var doc = cm.doc, result = {}\n var curFragment = result.cursors = document.createDocumentFragment()\n var selFragment = result.selection = document.createDocumentFragment()\n\n for (var i = 0; i < doc.sel.ranges.length; i++) {\n if (primary === false && i == doc.sel.primIndex) { continue }\n var range = doc.sel.ranges[i]\n if (range.from().line >= cm.display.viewTo || range.to().line < cm.display.viewFrom) { continue }\n var collapsed = range.empty()\n if (collapsed || cm.options.showCursorWhenSelecting)\n { drawSelectionCursor(cm, range.head, curFragment) }\n if (!collapsed)\n { drawSelectionRange(cm, range, selFragment) }\n }\n return result\n}\n\n// Draws a cursor for the given range\nfunction drawSelectionCursor(cm, head, output) {\n var pos = cursorCoords(cm, head, \"div\", null, null, !cm.options.singleCursorHeightPerLine)\n\n var cursor = output.appendChild(elt(\"div\", \"\\u00a0\", \"CodeMirror-cursor\"))\n cursor.style.left = pos.left + \"px\"\n cursor.style.top = pos.top + \"px\"\n cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + \"px\"\n\n if (pos.other) {\n // Secondary cursor, shown when on a 'jump' in bi-directional text\n var otherCursor = output.appendChild(elt(\"div\", \"\\u00a0\", \"CodeMirror-cursor CodeMirror-secondarycursor\"))\n otherCursor.style.display = \"\"\n otherCursor.style.left = pos.other.left + \"px\"\n otherCursor.style.top = pos.other.top + \"px\"\n otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + \"px\"\n }\n}\n\n// Draws the given range as a highlighted selection\nfunction drawSelectionRange(cm, range, output) {\n var display = cm.display, doc = cm.doc\n var fragment = document.createDocumentFragment()\n var padding = paddingH(cm.display), leftSide = padding.left\n var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right\n\n function add(left, top, width, bottom) {\n if (top < 0) { top = 0 }\n top = Math.round(top)\n bottom = Math.round(bottom)\n fragment.appendChild(elt(\"div\", null, \"CodeMirror-selected\", (\"position: absolute; left: \" + left + \"px;\\n top: \" + top + \"px; width: \" + (width == null ? rightSide - left : width) + \"px;\\n height: \" + (bottom - top) + \"px\")))\n }\n\n function drawForLine(line, fromArg, toArg) {\n var lineObj = getLine(doc, line)\n var lineLen = lineObj.text.length\n var start, end\n function coords(ch, bias) {\n return charCoords(cm, Pos(line, ch), \"div\", lineObj, bias)\n }\n\n iterateBidiSections(getOrder(lineObj, doc.direction), fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir) {\n var leftPos = coords(from, \"left\"), rightPos, left, right\n if (from == to) {\n rightPos = leftPos\n left = right = leftPos.left\n } else {\n rightPos = coords(to - 1, \"right\")\n if (dir == \"rtl\") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp }\n left = leftPos.left\n right = rightPos.right\n }\n if (fromArg == null && from == 0) { left = leftSide }\n if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part\n add(left, leftPos.top, null, leftPos.bottom)\n left = leftSide\n if (leftPos.bottom < rightPos.top) { add(left, leftPos.bottom, null, rightPos.top) }\n }\n if (toArg == null && to == lineLen) { right = rightSide }\n if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)\n { start = leftPos }\n if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)\n { end = rightPos }\n if (left < leftSide + 1) { left = leftSide }\n add(left, rightPos.top, right - left, rightPos.bottom)\n })\n return {start: start, end: end}\n }\n\n var sFrom = range.from(), sTo = range.to()\n if (sFrom.line == sTo.line) {\n drawForLine(sFrom.line, sFrom.ch, sTo.ch)\n } else {\n var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line)\n var singleVLine = visualLine(fromLine) == visualLine(toLine)\n var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end\n var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start\n if (singleVLine) {\n if (leftEnd.top < rightStart.top - 2) {\n add(leftEnd.right, leftEnd.top, null, leftEnd.bottom)\n add(leftSide, rightStart.top, rightStart.left, rightStart.bottom)\n } else {\n add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom)\n }\n }\n if (leftEnd.bottom < rightStart.top)\n { add(leftSide, leftEnd.bottom, null, rightStart.top) }\n }\n\n output.appendChild(fragment)\n}\n\n// Cursor-blinking\nfunction restartBlink(cm) {\n if (!cm.state.focused) { return }\n var display = cm.display\n clearInterval(display.blinker)\n var on = true\n display.cursorDiv.style.visibility = \"\"\n if (cm.options.cursorBlinkRate > 0)\n { display.blinker = setInterval(function () { return display.cursorDiv.style.visibility = (on = !on) ? \"\" : \"hidden\"; },\n cm.options.cursorBlinkRate) }\n else if (cm.options.cursorBlinkRate < 0)\n { display.cursorDiv.style.visibility = \"hidden\" }\n}\n\nfunction ensureFocus(cm) {\n if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm) }\n}\n\nfunction delayBlurEvent(cm) {\n cm.state.delayingBlurEvent = true\n setTimeout(function () { if (cm.state.delayingBlurEvent) {\n cm.state.delayingBlurEvent = false\n onBlur(cm)\n } }, 100)\n}\n\nfunction onFocus(cm, e) {\n if (cm.state.delayingBlurEvent) { cm.state.delayingBlurEvent = false }\n\n if (cm.options.readOnly == \"nocursor\") { return }\n if (!cm.state.focused) {\n signal(cm, \"focus\", cm, e)\n cm.state.focused = true\n addClass(cm.display.wrapper, \"CodeMirror-focused\")\n // This test prevents this from firing when a context\n // menu is closed (since the input reset would kill the\n // select-all detection hack)\n if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {\n cm.display.input.reset()\n if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20) } // Issue #1730\n }\n cm.display.input.receivedFocus()\n }\n restartBlink(cm)\n}\nfunction onBlur(cm, e) {\n if (cm.state.delayingBlurEvent) { return }\n\n if (cm.state.focused) {\n signal(cm, \"blur\", cm, e)\n cm.state.focused = false\n rmClass(cm.display.wrapper, \"CodeMirror-focused\")\n }\n clearInterval(cm.display.blinker)\n setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false } }, 150)\n}\n\n// Read the actual heights of the rendered lines, and update their\n// stored heights to match.\nfunction updateHeightsInViewport(cm) {\n var display = cm.display\n var prevBottom = display.lineDiv.offsetTop\n for (var i = 0; i < display.view.length; i++) {\n var cur = display.view[i], height = (void 0)\n if (cur.hidden) { continue }\n if (ie && ie_version < 8) {\n var bot = cur.node.offsetTop + cur.node.offsetHeight\n height = bot - prevBottom\n prevBottom = bot\n } else {\n var box = cur.node.getBoundingClientRect()\n height = box.bottom - box.top\n }\n var diff = cur.line.height - height\n if (height < 2) { height = textHeight(display) }\n if (diff > .005 || diff < -.005) {\n updateLineHeight(cur.line, height)\n updateWidgetHeight(cur.line)\n if (cur.rest) { for (var j = 0; j < cur.rest.length; j++)\n { updateWidgetHeight(cur.rest[j]) } }\n }\n }\n}\n\n// Read and store the height of line widgets associated with the\n// given line.\nfunction updateWidgetHeight(line) {\n if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i)\n { line.widgets[i].height = line.widgets[i].node.parentNode.offsetHeight } }\n}\n\n// Compute the lines that are visible in a given viewport (defaults\n// the the current scroll position). viewport may contain top,\n// height, and ensure (see op.scrollToPos) properties.\nfunction visibleLines(display, doc, viewport) {\n var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop\n top = Math.floor(top - paddingTop(display))\n var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight\n\n var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom)\n // Ensure is a {from: {line, ch}, to: {line, ch}} object, and\n // forces those lines into the viewport (if possible).\n if (viewport && viewport.ensure) {\n var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line\n if (ensureFrom < from) {\n from = ensureFrom\n to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight)\n } else if (Math.min(ensureTo, doc.lastLine()) >= to) {\n from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight)\n to = ensureTo\n }\n }\n return {from: from, to: Math.max(to, from + 1)}\n}\n\n// Re-align line numbers and gutter marks to compensate for\n// horizontal scrolling.\nfunction alignHorizontally(cm) {\n var display = cm.display, view = display.view\n if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return }\n var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft\n var gutterW = display.gutters.offsetWidth, left = comp + \"px\"\n for (var i = 0; i < view.length; i++) { if (!view[i].hidden) {\n if (cm.options.fixedGutter) {\n if (view[i].gutter)\n { view[i].gutter.style.left = left }\n if (view[i].gutterBackground)\n { view[i].gutterBackground.style.left = left }\n }\n var align = view[i].alignable\n if (align) { for (var j = 0; j < align.length; j++)\n { align[j].style.left = left } }\n } }\n if (cm.options.fixedGutter)\n { display.gutters.style.left = (comp + gutterW) + \"px\" }\n}\n\n// Used to ensure that the line number gutter is still the right\n// size for the current document size. Returns true when an update\n// is needed.\nfunction maybeUpdateLineNumberWidth(cm) {\n if (!cm.options.lineNumbers) { return false }\n var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display\n if (last.length != display.lineNumChars) {\n var test = display.measure.appendChild(elt(\"div\", [elt(\"div\", last)],\n \"CodeMirror-linenumber CodeMirror-gutter-elt\"))\n var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW\n display.lineGutter.style.width = \"\"\n display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1\n display.lineNumWidth = display.lineNumInnerWidth + padding\n display.lineNumChars = display.lineNumInnerWidth ? last.length : -1\n display.lineGutter.style.width = display.lineNumWidth + \"px\"\n updateGutterSpace(cm)\n return true\n }\n return false\n}\n\n// SCROLLING THINGS INTO VIEW\n\n// If an editor sits on the top or bottom of the window, partially\n// scrolled out of view, this ensures that the cursor is visible.\nfunction maybeScrollWindow(cm, rect) {\n if (signalDOMEvent(cm, \"scrollCursorIntoView\")) { return }\n\n var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null\n if (rect.top + box.top < 0) { doScroll = true }\n else if (rect.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) { doScroll = false }\n if (doScroll != null && !phantom) {\n var scrollNode = elt(\"div\", \"\\u200b\", null, (\"position: absolute;\\n top: \" + (rect.top - display.viewOffset - paddingTop(cm.display)) + \"px;\\n height: \" + (rect.bottom - rect.top + scrollGap(cm) + display.barHeight) + \"px;\\n left: \" + (rect.left) + \"px; width: \" + (Math.max(2, rect.right - rect.left)) + \"px;\"))\n cm.display.lineSpace.appendChild(scrollNode)\n scrollNode.scrollIntoView(doScroll)\n cm.display.lineSpace.removeChild(scrollNode)\n }\n}\n\n// Scroll a given position into view (immediately), verifying that\n// it actually became visible (as line heights are accurately\n// measured, the position of something may 'drift' during drawing).\nfunction scrollPosIntoView(cm, pos, end, margin) {\n if (margin == null) { margin = 0 }\n var rect\n if (!cm.options.lineWrapping && pos == end) {\n // Set pos and end to the cursor positions around the character pos sticks to\n // If pos.sticky == \"before\", that is around pos.ch - 1, otherwise around pos.ch\n // If pos == Pos(_, 0, \"before\"), pos and end are unchanged\n pos = pos.ch ? Pos(pos.line, pos.sticky == \"before\" ? pos.ch - 1 : pos.ch, \"after\") : pos\n end = pos.sticky == \"before\" ? Pos(pos.line, pos.ch + 1, \"before\") : pos\n }\n for (var limit = 0; limit < 5; limit++) {\n var changed = false\n var coords = cursorCoords(cm, pos)\n var endCoords = !end || end == pos ? coords : cursorCoords(cm, end)\n rect = {left: Math.min(coords.left, endCoords.left),\n top: Math.min(coords.top, endCoords.top) - margin,\n right: Math.max(coords.left, endCoords.left),\n bottom: Math.max(coords.bottom, endCoords.bottom) + margin}\n var scrollPos = calculateScrollPos(cm, rect)\n var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft\n if (scrollPos.scrollTop != null) {\n updateScrollTop(cm, scrollPos.scrollTop)\n if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true }\n }\n if (scrollPos.scrollLeft != null) {\n setScrollLeft(cm, scrollPos.scrollLeft)\n if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true }\n }\n if (!changed) { break }\n }\n return rect\n}\n\n// Scroll a given set of coordinates into view (immediately).\nfunction scrollIntoView(cm, rect) {\n var scrollPos = calculateScrollPos(cm, rect)\n if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop) }\n if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft) }\n}\n\n// Calculate a new scroll position needed to scroll the given\n// rectangle into view. Returns an object with scrollTop and\n// scrollLeft properties. When these are undefined, the\n// vertical/horizontal position does not need to be adjusted.\nfunction calculateScrollPos(cm, rect) {\n var display = cm.display, snapMargin = textHeight(cm.display)\n if (rect.top < 0) { rect.top = 0 }\n var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop\n var screen = displayHeight(cm), result = {}\n if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen }\n var docBottom = cm.doc.height + paddingVert(display)\n var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin\n if (rect.top < screentop) {\n result.scrollTop = atTop ? 0 : rect.top\n } else if (rect.bottom > screentop + screen) {\n var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen)\n if (newTop != screentop) { result.scrollTop = newTop }\n }\n\n var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft\n var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0)\n var tooWide = rect.right - rect.left > screenw\n if (tooWide) { rect.right = rect.left + screenw }\n if (rect.left < 10)\n { result.scrollLeft = 0 }\n else if (rect.left < screenleft)\n { result.scrollLeft = Math.max(0, rect.left - (tooWide ? 0 : 10)) }\n else if (rect.right > screenw + screenleft - 3)\n { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw }\n return result\n}\n\n// Store a relative adjustment to the scroll position in the current\n// operation (to be applied when the operation finishes).\nfunction addToScrollTop(cm, top) {\n if (top == null) { return }\n resolveScrollToPos(cm)\n cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top\n}\n\n// Make sure that at the end of the operation the current cursor is\n// shown.\nfunction ensureCursorVisible(cm) {\n resolveScrollToPos(cm)\n var cur = cm.getCursor()\n cm.curOp.scrollToPos = {from: cur, to: cur, margin: cm.options.cursorScrollMargin}\n}\n\nfunction scrollToCoords(cm, x, y) {\n if (x != null || y != null) { resolveScrollToPos(cm) }\n if (x != null) { cm.curOp.scrollLeft = x }\n if (y != null) { cm.curOp.scrollTop = y }\n}\n\nfunction scrollToRange(cm, range) {\n resolveScrollToPos(cm)\n cm.curOp.scrollToPos = range\n}\n\n// When an operation has its scrollToPos property set, and another\n// scroll action is applied before the end of the operation, this\n// 'simulates' scrolling that position into view in a cheap way, so\n// that the effect of intermediate scroll commands is not ignored.\nfunction resolveScrollToPos(cm) {\n var range = cm.curOp.scrollToPos\n if (range) {\n cm.curOp.scrollToPos = null\n var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to)\n scrollToCoordsRange(cm, from, to, range.margin)\n }\n}\n\nfunction scrollToCoordsRange(cm, from, to, margin) {\n var sPos = calculateScrollPos(cm, {\n left: Math.min(from.left, to.left),\n top: Math.min(from.top, to.top) - margin,\n right: Math.max(from.right, to.right),\n bottom: Math.max(from.bottom, to.bottom) + margin\n })\n scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop)\n}\n\n// Sync the scrollable area and scrollbars, ensure the viewport\n// covers the visible area.\nfunction updateScrollTop(cm, val) {\n if (Math.abs(cm.doc.scrollTop - val) < 2) { return }\n if (!gecko) { updateDisplaySimple(cm, {top: val}) }\n setScrollTop(cm, val, true)\n if (gecko) { updateDisplaySimple(cm) }\n startWorker(cm, 100)\n}\n\nfunction setScrollTop(cm, val, forceScroll) {\n val = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val)\n if (cm.display.scroller.scrollTop == val && !forceScroll) { return }\n cm.doc.scrollTop = val\n cm.display.scrollbars.setScrollTop(val)\n if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val }\n}\n\n// Sync scroller and scrollbar, ensure the gutter elements are\n// aligned.\nfunction setScrollLeft(cm, val, isScroller, forceScroll) {\n val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth)\n if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) { return }\n cm.doc.scrollLeft = val\n alignHorizontally(cm)\n if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val }\n cm.display.scrollbars.setScrollLeft(val)\n}\n\n// SCROLLBARS\n\n// Prepare DOM reads needed to update the scrollbars. Done in one\n// shot to minimize update/measure roundtrips.\nfunction measureForScrollbars(cm) {\n var d = cm.display, gutterW = d.gutters.offsetWidth\n var docH = Math.round(cm.doc.height + paddingVert(cm.display))\n return {\n clientHeight: d.scroller.clientHeight,\n viewHeight: d.wrapper.clientHeight,\n scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,\n viewWidth: d.wrapper.clientWidth,\n barLeft: cm.options.fixedGutter ? gutterW : 0,\n docHeight: docH,\n scrollHeight: docH + scrollGap(cm) + d.barHeight,\n nativeBarWidth: d.nativeBarWidth,\n gutterWidth: gutterW\n }\n}\n\nvar NativeScrollbars = function(place, scroll, cm) {\n this.cm = cm\n var vert = this.vert = elt(\"div\", [elt(\"div\", null, null, \"min-width: 1px\")], \"CodeMirror-vscrollbar\")\n var horiz = this.horiz = elt(\"div\", [elt(\"div\", null, null, \"height: 100%; min-height: 1px\")], \"CodeMirror-hscrollbar\")\n place(vert); place(horiz)\n\n on(vert, \"scroll\", function () {\n if (vert.clientHeight) { scroll(vert.scrollTop, \"vertical\") }\n })\n on(horiz, \"scroll\", function () {\n if (horiz.clientWidth) { scroll(horiz.scrollLeft, \"horizontal\") }\n })\n\n this.checkedZeroWidth = false\n // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).\n if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = \"18px\" }\n};\n\nNativeScrollbars.prototype.update = function (measure) {\n var needsH = measure.scrollWidth > measure.clientWidth + 1\n var needsV = measure.scrollHeight > measure.clientHeight + 1\n var sWidth = measure.nativeBarWidth\n\n if (needsV) {\n this.vert.style.display = \"block\"\n this.vert.style.bottom = needsH ? sWidth + \"px\" : \"0\"\n var totalHeight = measure.viewHeight - (needsH ? sWidth : 0)\n // A bug in IE8 can cause this value to be negative, so guard it.\n this.vert.firstChild.style.height =\n Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + \"px\"\n } else {\n this.vert.style.display = \"\"\n this.vert.firstChild.style.height = \"0\"\n }\n\n if (needsH) {\n this.horiz.style.display = \"block\"\n this.horiz.style.right = needsV ? sWidth + \"px\" : \"0\"\n this.horiz.style.left = measure.barLeft + \"px\"\n var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0)\n this.horiz.firstChild.style.width =\n Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + \"px\"\n } else {\n this.horiz.style.display = \"\"\n this.horiz.firstChild.style.width = \"0\"\n }\n\n if (!this.checkedZeroWidth && measure.clientHeight > 0) {\n if (sWidth == 0) { this.zeroWidthHack() }\n this.checkedZeroWidth = true\n }\n\n return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0}\n};\n\nNativeScrollbars.prototype.setScrollLeft = function (pos) {\n if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos }\n if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz, \"horiz\") }\n};\n\nNativeScrollbars.prototype.setScrollTop = function (pos) {\n if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos }\n if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert, \"vert\") }\n};\n\nNativeScrollbars.prototype.zeroWidthHack = function () {\n var w = mac && !mac_geMountainLion ? \"12px\" : \"18px\"\n this.horiz.style.height = this.vert.style.width = w\n this.horiz.style.pointerEvents = this.vert.style.pointerEvents = \"none\"\n this.disableHoriz = new Delayed\n this.disableVert = new Delayed\n};\n\nNativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) {\n bar.style.pointerEvents = \"auto\"\n function maybeDisable() {\n // To find out whether the scrollbar is still visible, we\n // check whether the element under the pixel in the bottom\n // right corner of the scrollbar box is the scrollbar box\n // itself (when the bar is still visible) or its filler child\n // (when the bar is hidden). If it is still visible, we keep\n // it enabled, if it's hidden, we disable pointer events.\n var box = bar.getBoundingClientRect()\n var elt = type == \"vert\" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2)\n : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1)\n if (elt != bar) { bar.style.pointerEvents = \"none\" }\n else { delay.set(1000, maybeDisable) }\n }\n delay.set(1000, maybeDisable)\n};\n\nNativeScrollbars.prototype.clear = function () {\n var parent = this.horiz.parentNode\n parent.removeChild(this.horiz)\n parent.removeChild(this.vert)\n};\n\nvar NullScrollbars = function () {};\n\nNullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} };\nNullScrollbars.prototype.setScrollLeft = function () {};\nNullScrollbars.prototype.setScrollTop = function () {};\nNullScrollbars.prototype.clear = function () {};\n\nfunction updateScrollbars(cm, measure) {\n if (!measure) { measure = measureForScrollbars(cm) }\n var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight\n updateScrollbarsInner(cm, measure)\n for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {\n if (startWidth != cm.display.barWidth && cm.options.lineWrapping)\n { updateHeightsInViewport(cm) }\n updateScrollbarsInner(cm, measureForScrollbars(cm))\n startWidth = cm.display.barWidth; startHeight = cm.display.barHeight\n }\n}\n\n// Re-synchronize the fake scrollbars with the actual size of the\n// content.\nfunction updateScrollbarsInner(cm, measure) {\n var d = cm.display\n var sizes = d.scrollbars.update(measure)\n\n d.sizer.style.paddingRight = (d.barWidth = sizes.right) + \"px\"\n d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + \"px\"\n d.heightForcer.style.borderBottom = sizes.bottom + \"px solid transparent\"\n\n if (sizes.right && sizes.bottom) {\n d.scrollbarFiller.style.display = \"block\"\n d.scrollbarFiller.style.height = sizes.bottom + \"px\"\n d.scrollbarFiller.style.width = sizes.right + \"px\"\n } else { d.scrollbarFiller.style.display = \"\" }\n if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {\n d.gutterFiller.style.display = \"block\"\n d.gutterFiller.style.height = sizes.bottom + \"px\"\n d.gutterFiller.style.width = measure.gutterWidth + \"px\"\n } else { d.gutterFiller.style.display = \"\" }\n}\n\nvar scrollbarModel = {\"native\": NativeScrollbars, \"null\": NullScrollbars}\n\nfunction initScrollbars(cm) {\n if (cm.display.scrollbars) {\n cm.display.scrollbars.clear()\n if (cm.display.scrollbars.addClass)\n { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass) }\n }\n\n cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) {\n cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller)\n // Prevent clicks in the scrollbars from killing focus\n on(node, \"mousedown\", function () {\n if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0) }\n })\n node.setAttribute(\"cm-not-content\", \"true\")\n }, function (pos, axis) {\n if (axis == \"horizontal\") { setScrollLeft(cm, pos) }\n else { updateScrollTop(cm, pos) }\n }, cm)\n if (cm.display.scrollbars.addClass)\n { addClass(cm.display.wrapper, cm.display.scrollbars.addClass) }\n}\n\n// Operations are used to wrap a series of changes to the editor\n// state in such a way that each change won't have to update the\n// cursor and display (which would be awkward, slow, and\n// error-prone). Instead, display updates are batched and then all\n// combined and executed at once.\n\nvar nextOpId = 0\n// Start a new operation.\nfunction startOperation(cm) {\n cm.curOp = {\n cm: cm,\n viewChanged: false, // Flag that indicates that lines might need to be redrawn\n startHeight: cm.doc.height, // Used to detect need to update scrollbar\n forceUpdate: false, // Used to force a redraw\n updateInput: null, // Whether to reset the input textarea\n typing: false, // Whether this reset should be careful to leave existing text (for compositing)\n changeObjs: null, // Accumulated changes, for firing change events\n cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on\n cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already\n selectionChanged: false, // Whether the selection needs to be redrawn\n updateMaxLine: false, // Set when the widest line needs to be determined anew\n scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet\n scrollToPos: null, // Used to scroll to a specific position\n focus: false,\n id: ++nextOpId // Unique ID\n }\n pushOperation(cm.curOp)\n}\n\n// Finish an operation, updating the display and signalling delayed events\nfunction endOperation(cm) {\n var op = cm.curOp\n finishOperation(op, function (group) {\n for (var i = 0; i < group.ops.length; i++)\n { group.ops[i].cm.curOp = null }\n endOperations(group)\n })\n}\n\n// The DOM updates done when an operation finishes are batched so\n// that the minimum number of relayouts are required.\nfunction endOperations(group) {\n var ops = group.ops\n for (var i = 0; i < ops.length; i++) // Read DOM\n { endOperation_R1(ops[i]) }\n for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe)\n { endOperation_W1(ops[i$1]) }\n for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM\n { endOperation_R2(ops[i$2]) }\n for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe)\n { endOperation_W2(ops[i$3]) }\n for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM\n { endOperation_finish(ops[i$4]) }\n}\n\nfunction endOperation_R1(op) {\n var cm = op.cm, display = cm.display\n maybeClipScrollbars(cm)\n if (op.updateMaxLine) { findMaxLine(cm) }\n\n op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||\n op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||\n op.scrollToPos.to.line >= display.viewTo) ||\n display.maxLineChanged && cm.options.lineWrapping\n op.update = op.mustUpdate &&\n new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate)\n}\n\nfunction endOperation_W1(op) {\n op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update)\n}\n\nfunction endOperation_R2(op) {\n var cm = op.cm, display = cm.display\n if (op.updatedDisplay) { updateHeightsInViewport(cm) }\n\n op.barMeasure = measureForScrollbars(cm)\n\n // If the max line changed since it was last measured, measure it,\n // and ensure the document's width matches it.\n // updateDisplay_W2 will use these properties to do the actual resizing\n if (display.maxLineChanged && !cm.options.lineWrapping) {\n op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3\n cm.display.sizerWidth = op.adjustWidthTo\n op.barMeasure.scrollWidth =\n Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth)\n op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm))\n }\n\n if (op.updatedDisplay || op.selectionChanged)\n { op.preparedSelection = display.input.prepareSelection(op.focus) }\n}\n\nfunction endOperation_W2(op) {\n var cm = op.cm\n\n if (op.adjustWidthTo != null) {\n cm.display.sizer.style.minWidth = op.adjustWidthTo + \"px\"\n if (op.maxScrollLeft < cm.doc.scrollLeft)\n { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true) }\n cm.display.maxLineChanged = false\n }\n\n var takeFocus = op.focus && op.focus == activeElt() && (!document.hasFocus || document.hasFocus())\n if (op.preparedSelection)\n { cm.display.input.showSelection(op.preparedSelection, takeFocus) }\n if (op.updatedDisplay || op.startHeight != cm.doc.height)\n { updateScrollbars(cm, op.barMeasure) }\n if (op.updatedDisplay)\n { setDocumentHeight(cm, op.barMeasure) }\n\n if (op.selectionChanged) { restartBlink(cm) }\n\n if (cm.state.focused && op.updateInput)\n { cm.display.input.reset(op.typing) }\n if (takeFocus) { ensureFocus(op.cm) }\n}\n\nfunction endOperation_finish(op) {\n var cm = op.cm, display = cm.display, doc = cm.doc\n\n if (op.updatedDisplay) { postUpdateDisplay(cm, op.update) }\n\n // Abort mouse wheel delta measurement, when scrolling explicitly\n if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))\n { display.wheelStartX = display.wheelStartY = null }\n\n // Propagate the scroll position to the actual DOM scroller\n if (op.scrollTop != null) { setScrollTop(cm, op.scrollTop, op.forceScroll) }\n\n if (op.scrollLeft != null) { setScrollLeft(cm, op.scrollLeft, true, true) }\n // If we need to scroll a specific position into view, do so.\n if (op.scrollToPos) {\n var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),\n clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin)\n maybeScrollWindow(cm, rect)\n }\n\n // Fire events for markers that are hidden/unidden by editing or\n // undoing\n var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers\n if (hidden) { for (var i = 0; i < hidden.length; ++i)\n { if (!hidden[i].lines.length) { signal(hidden[i], \"hide\") } } }\n if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1)\n { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], \"unhide\") } } }\n\n if (display.wrapper.offsetHeight)\n { doc.scrollTop = cm.display.scroller.scrollTop }\n\n // Fire change events, and delayed event handlers\n if (op.changeObjs)\n { signal(cm, \"changes\", cm, op.changeObjs) }\n if (op.update)\n { op.update.finish() }\n}\n\n// Run the given function in an operation\nfunction runInOp(cm, f) {\n if (cm.curOp) { return f() }\n startOperation(cm)\n try { return f() }\n finally { endOperation(cm) }\n}\n// Wraps a function in an operation. Returns the wrapped function.\nfunction operation(cm, f) {\n return function() {\n if (cm.curOp) { return f.apply(cm, arguments) }\n startOperation(cm)\n try { return f.apply(cm, arguments) }\n finally { endOperation(cm) }\n }\n}\n// Used to add methods to editor and doc instances, wrapping them in\n// operations.\nfunction methodOp(f) {\n return function() {\n if (this.curOp) { return f.apply(this, arguments) }\n startOperation(this)\n try { return f.apply(this, arguments) }\n finally { endOperation(this) }\n }\n}\nfunction docMethodOp(f) {\n return function() {\n var cm = this.cm\n if (!cm || cm.curOp) { return f.apply(this, arguments) }\n startOperation(cm)\n try { return f.apply(this, arguments) }\n finally { endOperation(cm) }\n }\n}\n\n// Updates the display.view data structure for a given change to the\n// document. From and to are in pre-change coordinates. Lendiff is\n// the amount of lines added or subtracted by the change. This is\n// used for changes that span multiple lines, or change the way\n// lines are divided into visual lines. regLineChange (below)\n// registers single-line changes.\nfunction regChange(cm, from, to, lendiff) {\n if (from == null) { from = cm.doc.first }\n if (to == null) { to = cm.doc.first + cm.doc.size }\n if (!lendiff) { lendiff = 0 }\n\n var display = cm.display\n if (lendiff && to < display.viewTo &&\n (display.updateLineNumbers == null || display.updateLineNumbers > from))\n { display.updateLineNumbers = from }\n\n cm.curOp.viewChanged = true\n\n if (from >= display.viewTo) { // Change after\n if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)\n { resetView(cm) }\n } else if (to <= display.viewFrom) { // Change before\n if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {\n resetView(cm)\n } else {\n display.viewFrom += lendiff\n display.viewTo += lendiff\n }\n } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap\n resetView(cm)\n } else if (from <= display.viewFrom) { // Top overlap\n var cut = viewCuttingPoint(cm, to, to + lendiff, 1)\n if (cut) {\n display.view = display.view.slice(cut.index)\n display.viewFrom = cut.lineN\n display.viewTo += lendiff\n } else {\n resetView(cm)\n }\n } else if (to >= display.viewTo) { // Bottom overlap\n var cut$1 = viewCuttingPoint(cm, from, from, -1)\n if (cut$1) {\n display.view = display.view.slice(0, cut$1.index)\n display.viewTo = cut$1.lineN\n } else {\n resetView(cm)\n }\n } else { // Gap in the middle\n var cutTop = viewCuttingPoint(cm, from, from, -1)\n var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1)\n if (cutTop && cutBot) {\n display.view = display.view.slice(0, cutTop.index)\n .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))\n .concat(display.view.slice(cutBot.index))\n display.viewTo += lendiff\n } else {\n resetView(cm)\n }\n }\n\n var ext = display.externalMeasured\n if (ext) {\n if (to < ext.lineN)\n { ext.lineN += lendiff }\n else if (from < ext.lineN + ext.size)\n { display.externalMeasured = null }\n }\n}\n\n// Register a change to a single line. Type must be one of \"text\",\n// \"gutter\", \"class\", \"widget\"\nfunction regLineChange(cm, line, type) {\n cm.curOp.viewChanged = true\n var display = cm.display, ext = cm.display.externalMeasured\n if (ext && line >= ext.lineN && line < ext.lineN + ext.size)\n { display.externalMeasured = null }\n\n if (line < display.viewFrom || line >= display.viewTo) { return }\n var lineView = display.view[findViewIndex(cm, line)]\n if (lineView.node == null) { return }\n var arr = lineView.changes || (lineView.changes = [])\n if (indexOf(arr, type) == -1) { arr.push(type) }\n}\n\n// Clear the view.\nfunction resetView(cm) {\n cm.display.viewFrom = cm.display.viewTo = cm.doc.first\n cm.display.view = []\n cm.display.viewOffset = 0\n}\n\nfunction viewCuttingPoint(cm, oldN, newN, dir) {\n var index = findViewIndex(cm, oldN), diff, view = cm.display.view\n if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)\n { return {index: index, lineN: newN} }\n var n = cm.display.viewFrom\n for (var i = 0; i < index; i++)\n { n += view[i].size }\n if (n != oldN) {\n if (dir > 0) {\n if (index == view.length - 1) { return null }\n diff = (n + view[index].size) - oldN\n index++\n } else {\n diff = n - oldN\n }\n oldN += diff; newN += diff\n }\n while (visualLineNo(cm.doc, newN) != newN) {\n if (index == (dir < 0 ? 0 : view.length - 1)) { return null }\n newN += dir * view[index - (dir < 0 ? 1 : 0)].size\n index += dir\n }\n return {index: index, lineN: newN}\n}\n\n// Force the view to cover a given range, adding empty view element\n// or clipping off existing ones as needed.\nfunction adjustView(cm, from, to) {\n var display = cm.display, view = display.view\n if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {\n display.view = buildViewArray(cm, from, to)\n display.viewFrom = from\n } else {\n if (display.viewFrom > from)\n { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view) }\n else if (display.viewFrom < from)\n { display.view = display.view.slice(findViewIndex(cm, from)) }\n display.viewFrom = from\n if (display.viewTo < to)\n { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)) }\n else if (display.viewTo > to)\n { display.view = display.view.slice(0, findViewIndex(cm, to)) }\n }\n display.viewTo = to\n}\n\n// Count the number of lines in the view whose DOM representation is\n// out of date (or nonexistent).\nfunction countDirtyView(cm) {\n var view = cm.display.view, dirty = 0\n for (var i = 0; i < view.length; i++) {\n var lineView = view[i]\n if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty }\n }\n return dirty\n}\n\n// HIGHLIGHT WORKER\n\nfunction startWorker(cm, time) {\n if (cm.doc.highlightFrontier < cm.display.viewTo)\n { cm.state.highlight.set(time, bind(highlightWorker, cm)) }\n}\n\nfunction highlightWorker(cm) {\n var doc = cm.doc\n if (doc.highlightFrontier >= cm.display.viewTo) { return }\n var end = +new Date + cm.options.workTime\n var context = getContextBefore(cm, doc.highlightFrontier)\n var changedLines = []\n\n doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) {\n if (context.line >= cm.display.viewFrom) { // Visible\n var oldStyles = line.styles\n var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null\n var highlighted = highlightLine(cm, line, context, true)\n if (resetState) { context.state = resetState }\n line.styles = highlighted.styles\n var oldCls = line.styleClasses, newCls = highlighted.classes\n if (newCls) { line.styleClasses = newCls }\n else if (oldCls) { line.styleClasses = null }\n var ischange = !oldStyles || oldStyles.length != line.styles.length ||\n oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass)\n for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i] }\n if (ischange) { changedLines.push(context.line) }\n line.stateAfter = context.save()\n context.nextLine()\n } else {\n if (line.text.length <= cm.options.maxHighlightLength)\n { processLine(cm, line.text, context) }\n line.stateAfter = context.line % 5 == 0 ? context.save() : null\n context.nextLine()\n }\n if (+new Date > end) {\n startWorker(cm, cm.options.workDelay)\n return true\n }\n })\n doc.highlightFrontier = context.line\n doc.modeFrontier = Math.max(doc.modeFrontier, context.line)\n if (changedLines.length) { runInOp(cm, function () {\n for (var i = 0; i < changedLines.length; i++)\n { regLineChange(cm, changedLines[i], \"text\") }\n }) }\n}\n\n// DISPLAY DRAWING\n\nvar DisplayUpdate = function(cm, viewport, force) {\n var display = cm.display\n\n this.viewport = viewport\n // Store some values that we'll need later (but don't want to force a relayout for)\n this.visible = visibleLines(display, cm.doc, viewport)\n this.editorIsHidden = !display.wrapper.offsetWidth\n this.wrapperHeight = display.wrapper.clientHeight\n this.wrapperWidth = display.wrapper.clientWidth\n this.oldDisplayWidth = displayWidth(cm)\n this.force = force\n this.dims = getDimensions(cm)\n this.events = []\n};\n\nDisplayUpdate.prototype.signal = function (emitter, type) {\n if (hasHandler(emitter, type))\n { this.events.push(arguments) }\n};\nDisplayUpdate.prototype.finish = function () {\n var this$1 = this;\n\n for (var i = 0; i < this.events.length; i++)\n { signal.apply(null, this$1.events[i]) }\n};\n\nfunction maybeClipScrollbars(cm) {\n var display = cm.display\n if (!display.scrollbarsClipped && display.scroller.offsetWidth) {\n display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth\n display.heightForcer.style.height = scrollGap(cm) + \"px\"\n display.sizer.style.marginBottom = -display.nativeBarWidth + \"px\"\n display.sizer.style.borderRightWidth = scrollGap(cm) + \"px\"\n display.scrollbarsClipped = true\n }\n}\n\nfunction selectionSnapshot(cm) {\n if (cm.hasFocus()) { return null }\n var active = activeElt()\n if (!active || !contains(cm.display.lineDiv, active)) { return null }\n var result = {activeElt: active}\n if (window.getSelection) {\n var sel = window.getSelection()\n if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) {\n result.anchorNode = sel.anchorNode\n result.anchorOffset = sel.anchorOffset\n result.focusNode = sel.focusNode\n result.focusOffset = sel.focusOffset\n }\n }\n return result\n}\n\nfunction restoreSelection(snapshot) {\n if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt()) { return }\n snapshot.activeElt.focus()\n if (snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) {\n var sel = window.getSelection(), range = document.createRange()\n range.setEnd(snapshot.anchorNode, snapshot.anchorOffset)\n range.collapse(false)\n sel.removeAllRanges()\n sel.addRange(range)\n sel.extend(snapshot.focusNode, snapshot.focusOffset)\n }\n}\n\n// Does the actual updating of the line display. Bails out\n// (returning false) when there is nothing to be done and forced is\n// false.\nfunction updateDisplayIfNeeded(cm, update) {\n var display = cm.display, doc = cm.doc\n\n if (update.editorIsHidden) {\n resetView(cm)\n return false\n }\n\n // Bail out if the visible area is already rendered and nothing changed.\n if (!update.force &&\n update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&\n (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&\n display.renderedView == display.view && countDirtyView(cm) == 0)\n { return false }\n\n if (maybeUpdateLineNumberWidth(cm)) {\n resetView(cm)\n update.dims = getDimensions(cm)\n }\n\n // Compute a suitable new viewport (from & to)\n var end = doc.first + doc.size\n var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first)\n var to = Math.min(end, update.visible.to + cm.options.viewportMargin)\n if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom) }\n if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo) }\n if (sawCollapsedSpans) {\n from = visualLineNo(cm.doc, from)\n to = visualLineEndNo(cm.doc, to)\n }\n\n var different = from != display.viewFrom || to != display.viewTo ||\n display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth\n adjustView(cm, from, to)\n\n display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom))\n // Position the mover div to align with the current scroll position\n cm.display.mover.style.top = display.viewOffset + \"px\"\n\n var toUpdate = countDirtyView(cm)\n if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&\n (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))\n { return false }\n\n // For big changes, we hide the enclosing element during the\n // update, since that speeds up the operations on most browsers.\n var selSnapshot = selectionSnapshot(cm)\n if (toUpdate > 4) { display.lineDiv.style.display = \"none\" }\n patchDisplay(cm, display.updateLineNumbers, update.dims)\n if (toUpdate > 4) { display.lineDiv.style.display = \"\" }\n display.renderedView = display.view\n // There might have been a widget with a focused element that got\n // hidden or updated, if so re-focus it.\n restoreSelection(selSnapshot)\n\n // Prevent selection and cursors from interfering with the scroll\n // width and height.\n removeChildren(display.cursorDiv)\n removeChildren(display.selectionDiv)\n display.gutters.style.height = display.sizer.style.minHeight = 0\n\n if (different) {\n display.lastWrapHeight = update.wrapperHeight\n display.lastWrapWidth = update.wrapperWidth\n startWorker(cm, 400)\n }\n\n display.updateLineNumbers = null\n\n return true\n}\n\nfunction postUpdateDisplay(cm, update) {\n var viewport = update.viewport\n\n for (var first = true;; first = false) {\n if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {\n // Clip forced viewport to actual scrollable area.\n if (viewport && viewport.top != null)\n { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)} }\n // Updated line heights might result in the drawn area not\n // actually covering the viewport. Keep looping until it does.\n update.visible = visibleLines(cm.display, cm.doc, viewport)\n if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)\n { break }\n }\n if (!updateDisplayIfNeeded(cm, update)) { break }\n updateHeightsInViewport(cm)\n var barMeasure = measureForScrollbars(cm)\n updateSelection(cm)\n updateScrollbars(cm, barMeasure)\n setDocumentHeight(cm, barMeasure)\n update.force = false\n }\n\n update.signal(cm, \"update\", cm)\n if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {\n update.signal(cm, \"viewportChange\", cm, cm.display.viewFrom, cm.display.viewTo)\n cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo\n }\n}\n\nfunction updateDisplaySimple(cm, viewport) {\n var update = new DisplayUpdate(cm, viewport)\n if (updateDisplayIfNeeded(cm, update)) {\n updateHeightsInViewport(cm)\n postUpdateDisplay(cm, update)\n var barMeasure = measureForScrollbars(cm)\n updateSelection(cm)\n updateScrollbars(cm, barMeasure)\n setDocumentHeight(cm, barMeasure)\n update.finish()\n }\n}\n\n// Sync the actual display DOM structure with display.view, removing\n// nodes for lines that are no longer in view, and creating the ones\n// that are not there yet, and updating the ones that are out of\n// date.\nfunction patchDisplay(cm, updateNumbersFrom, dims) {\n var display = cm.display, lineNumbers = cm.options.lineNumbers\n var container = display.lineDiv, cur = container.firstChild\n\n function rm(node) {\n var next = node.nextSibling\n // Works around a throw-scroll bug in OS X Webkit\n if (webkit && mac && cm.display.currentWheelTarget == node)\n { node.style.display = \"none\" }\n else\n { node.parentNode.removeChild(node) }\n return next\n }\n\n var view = display.view, lineN = display.viewFrom\n // Loop over the elements in the view, syncing cur (the DOM nodes\n // in display.lineDiv) with the view as we go.\n for (var i = 0; i < view.length; i++) {\n var lineView = view[i]\n if (lineView.hidden) {\n } else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet\n var node = buildLineElement(cm, lineView, lineN, dims)\n container.insertBefore(node, cur)\n } else { // Already drawn\n while (cur != lineView.node) { cur = rm(cur) }\n var updateNumber = lineNumbers && updateNumbersFrom != null &&\n updateNumbersFrom <= lineN && lineView.lineNumber\n if (lineView.changes) {\n if (indexOf(lineView.changes, \"gutter\") > -1) { updateNumber = false }\n updateLineForChanges(cm, lineView, lineN, dims)\n }\n if (updateNumber) {\n removeChildren(lineView.lineNumber)\n lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)))\n }\n cur = lineView.node.nextSibling\n }\n lineN += lineView.size\n }\n while (cur) { cur = rm(cur) }\n}\n\nfunction updateGutterSpace(cm) {\n var width = cm.display.gutters.offsetWidth\n cm.display.sizer.style.marginLeft = width + \"px\"\n}\n\nfunction setDocumentHeight(cm, measure) {\n cm.display.sizer.style.minHeight = measure.docHeight + \"px\"\n cm.display.heightForcer.style.top = measure.docHeight + \"px\"\n cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + \"px\"\n}\n\n// Rebuild the gutter elements, ensure the margin to the left of the\n// code matches their width.\nfunction updateGutters(cm) {\n var gutters = cm.display.gutters, specs = cm.options.gutters\n removeChildren(gutters)\n var i = 0\n for (; i < specs.length; ++i) {\n var gutterClass = specs[i]\n var gElt = gutters.appendChild(elt(\"div\", null, \"CodeMirror-gutter \" + gutterClass))\n if (gutterClass == \"CodeMirror-linenumbers\") {\n cm.display.lineGutter = gElt\n gElt.style.width = (cm.display.lineNumWidth || 1) + \"px\"\n }\n }\n gutters.style.display = i ? \"\" : \"none\"\n updateGutterSpace(cm)\n}\n\n// Make sure the gutters options contains the element\n// \"CodeMirror-linenumbers\" when the lineNumbers option is true.\nfunction setGuttersForLineNumbers(options) {\n var found = indexOf(options.gutters, \"CodeMirror-linenumbers\")\n if (found == -1 && options.lineNumbers) {\n options.gutters = options.gutters.concat([\"CodeMirror-linenumbers\"])\n } else if (found > -1 && !options.lineNumbers) {\n options.gutters = options.gutters.slice(0)\n options.gutters.splice(found, 1)\n }\n}\n\nvar wheelSamples = 0;\nvar wheelPixelsPerUnit = null;\n// Fill in a browser-detected starting value on browsers where we\n// know one. These don't have to be accurate -- the result of them\n// being wrong would just be a slight flicker on the first wheel\n// scroll (if it is large enough).\nif (ie) { wheelPixelsPerUnit = -.53 }\nelse if (gecko) { wheelPixelsPerUnit = 15 }\nelse if (chrome) { wheelPixelsPerUnit = -.7 }\nelse if (safari) { wheelPixelsPerUnit = -1/3 }\n\nfunction wheelEventDelta(e) {\n var dx = e.wheelDeltaX, dy = e.wheelDeltaY\n if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail }\n if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail }\n else if (dy == null) { dy = e.wheelDelta }\n return {x: dx, y: dy}\n}\nfunction wheelEventPixels(e) {\n var delta = wheelEventDelta(e)\n delta.x *= wheelPixelsPerUnit\n delta.y *= wheelPixelsPerUnit\n return delta\n}\n\nfunction onScrollWheel(cm, e) {\n var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y\n\n var display = cm.display, scroll = display.scroller\n // Quit if there's nothing to scroll here\n var canScrollX = scroll.scrollWidth > scroll.clientWidth\n var canScrollY = scroll.scrollHeight > scroll.clientHeight\n if (!(dx && canScrollX || dy && canScrollY)) { return }\n\n // Webkit browsers on OS X abort momentum scrolls when the target\n // of the scroll event is removed from the scrollable element.\n // This hack (see related code in patchDisplay) makes sure the\n // element is kept around.\n if (dy && mac && webkit) {\n outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {\n for (var i = 0; i < view.length; i++) {\n if (view[i].node == cur) {\n cm.display.currentWheelTarget = cur\n break outer\n }\n }\n }\n }\n\n // On some browsers, horizontal scrolling will cause redraws to\n // happen before the gutter has been realigned, causing it to\n // wriggle around in a most unseemly way. When we have an\n // estimated pixels/delta value, we just handle horizontal\n // scrolling entirely here. It'll be slightly off from native, but\n // better than glitching out.\n if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {\n if (dy && canScrollY)\n { updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * wheelPixelsPerUnit)) }\n setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * wheelPixelsPerUnit))\n // Only prevent default scrolling if vertical scrolling is\n // actually possible. Otherwise, it causes vertical scroll\n // jitter on OSX trackpads when deltaX is small and deltaY\n // is large (issue #3579)\n if (!dy || (dy && canScrollY))\n { e_preventDefault(e) }\n display.wheelStartX = null // Abort measurement, if in progress\n return\n }\n\n // 'Project' the visible viewport to cover the area that is being\n // scrolled into view (if we know enough to estimate it).\n if (dy && wheelPixelsPerUnit != null) {\n var pixels = dy * wheelPixelsPerUnit\n var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight\n if (pixels < 0) { top = Math.max(0, top + pixels - 50) }\n else { bot = Math.min(cm.doc.height, bot + pixels + 50) }\n updateDisplaySimple(cm, {top: top, bottom: bot})\n }\n\n if (wheelSamples < 20) {\n if (display.wheelStartX == null) {\n display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop\n display.wheelDX = dx; display.wheelDY = dy\n setTimeout(function () {\n if (display.wheelStartX == null) { return }\n var movedX = scroll.scrollLeft - display.wheelStartX\n var movedY = scroll.scrollTop - display.wheelStartY\n var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||\n (movedX && display.wheelDX && movedX / display.wheelDX)\n display.wheelStartX = display.wheelStartY = null\n if (!sample) { return }\n wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1)\n ++wheelSamples\n }, 200)\n } else {\n display.wheelDX += dx; display.wheelDY += dy\n }\n }\n}\n\n// Selection objects are immutable. A new one is created every time\n// the selection changes. A selection is one or more non-overlapping\n// (and non-touching) ranges, sorted, and an integer that indicates\n// which one is the primary selection (the one that's scrolled into\n// view, that getCursor returns, etc).\nvar Selection = function(ranges, primIndex) {\n this.ranges = ranges\n this.primIndex = primIndex\n};\n\nSelection.prototype.primary = function () { return this.ranges[this.primIndex] };\n\nSelection.prototype.equals = function (other) {\n var this$1 = this;\n\n if (other == this) { return true }\n if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false }\n for (var i = 0; i < this.ranges.length; i++) {\n var here = this$1.ranges[i], there = other.ranges[i]\n if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false }\n }\n return true\n};\n\nSelection.prototype.deepCopy = function () {\n var this$1 = this;\n\n var out = []\n for (var i = 0; i < this.ranges.length; i++)\n { out[i] = new Range(copyPos(this$1.ranges[i].anchor), copyPos(this$1.ranges[i].head)) }\n return new Selection(out, this.primIndex)\n};\n\nSelection.prototype.somethingSelected = function () {\n var this$1 = this;\n\n for (var i = 0; i < this.ranges.length; i++)\n { if (!this$1.ranges[i].empty()) { return true } }\n return false\n};\n\nSelection.prototype.contains = function (pos, end) {\n var this$1 = this;\n\n if (!end) { end = pos }\n for (var i = 0; i < this.ranges.length; i++) {\n var range = this$1.ranges[i]\n if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)\n { return i }\n }\n return -1\n};\n\nvar Range = function(anchor, head) {\n this.anchor = anchor; this.head = head\n};\n\nRange.prototype.from = function () { return minPos(this.anchor, this.head) };\nRange.prototype.to = function () { return maxPos(this.anchor, this.head) };\nRange.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch };\n\n// Take an unsorted, potentially overlapping set of ranges, and\n// build a selection out of it. 'Consumes' ranges array (modifying\n// it).\nfunction normalizeSelection(ranges, primIndex) {\n var prim = ranges[primIndex]\n ranges.sort(function (a, b) { return cmp(a.from(), b.from()); })\n primIndex = indexOf(ranges, prim)\n for (var i = 1; i < ranges.length; i++) {\n var cur = ranges[i], prev = ranges[i - 1]\n if (cmp(prev.to(), cur.from()) >= 0) {\n var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to())\n var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head\n if (i <= primIndex) { --primIndex }\n ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to))\n }\n }\n return new Selection(ranges, primIndex)\n}\n\nfunction simpleSelection(anchor, head) {\n return new Selection([new Range(anchor, head || anchor)], 0)\n}\n\n// Compute the position of the end of a change (its 'to' property\n// refers to the pre-change end).\nfunction changeEnd(change) {\n if (!change.text) { return change.to }\n return Pos(change.from.line + change.text.length - 1,\n lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0))\n}\n\n// Adjust a position to refer to the post-change position of the\n// same text, or the end of the change if the change covers it.\nfunction adjustForChange(pos, change) {\n if (cmp(pos, change.from) < 0) { return pos }\n if (cmp(pos, change.to) <= 0) { return changeEnd(change) }\n\n var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch\n if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch }\n return Pos(line, ch)\n}\n\nfunction computeSelAfterChange(doc, change) {\n var out = []\n for (var i = 0; i < doc.sel.ranges.length; i++) {\n var range = doc.sel.ranges[i]\n out.push(new Range(adjustForChange(range.anchor, change),\n adjustForChange(range.head, change)))\n }\n return normalizeSelection(out, doc.sel.primIndex)\n}\n\nfunction offsetPos(pos, old, nw) {\n if (pos.line == old.line)\n { return Pos(nw.line, pos.ch - old.ch + nw.ch) }\n else\n { return Pos(nw.line + (pos.line - old.line), pos.ch) }\n}\n\n// Used by replaceSelections to allow moving the selection to the\n// start or around the replaced test. Hint may be \"start\" or \"around\".\nfunction computeReplacedSel(doc, changes, hint) {\n var out = []\n var oldPrev = Pos(doc.first, 0), newPrev = oldPrev\n for (var i = 0; i < changes.length; i++) {\n var change = changes[i]\n var from = offsetPos(change.from, oldPrev, newPrev)\n var to = offsetPos(changeEnd(change), oldPrev, newPrev)\n oldPrev = change.to\n newPrev = to\n if (hint == \"around\") {\n var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0\n out[i] = new Range(inv ? to : from, inv ? from : to)\n } else {\n out[i] = new Range(from, from)\n }\n }\n return new Selection(out, doc.sel.primIndex)\n}\n\n// Used to get the editor into a consistent state again when options change.\n\nfunction loadMode(cm) {\n cm.doc.mode = getMode(cm.options, cm.doc.modeOption)\n resetModeState(cm)\n}\n\nfunction resetModeState(cm) {\n cm.doc.iter(function (line) {\n if (line.stateAfter) { line.stateAfter = null }\n if (line.styles) { line.styles = null }\n })\n cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first\n startWorker(cm, 100)\n cm.state.modeGen++\n if (cm.curOp) { regChange(cm) }\n}\n\n// DOCUMENT DATA STRUCTURE\n\n// By default, updates that start and end at the beginning of a line\n// are treated specially, in order to make the association of line\n// widgets and marker elements with the text behave more intuitive.\nfunction isWholeLineUpdate(doc, change) {\n return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == \"\" &&\n (!doc.cm || doc.cm.options.wholeLineUpdateBefore)\n}\n\n// Perform a change on the document data structure.\nfunction updateDoc(doc, change, markedSpans, estimateHeight) {\n function spansFor(n) {return markedSpans ? markedSpans[n] : null}\n function update(line, text, spans) {\n updateLine(line, text, spans, estimateHeight)\n signalLater(line, \"change\", line, change)\n }\n function linesFor(start, end) {\n var result = []\n for (var i = start; i < end; ++i)\n { result.push(new Line(text[i], spansFor(i), estimateHeight)) }\n return result\n }\n\n var from = change.from, to = change.to, text = change.text\n var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line)\n var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line\n\n // Adjust the line structure\n if (change.full) {\n doc.insert(0, linesFor(0, text.length))\n doc.remove(text.length, doc.size - text.length)\n } else if (isWholeLineUpdate(doc, change)) {\n // This is a whole-line replace. Treated specially to make\n // sure line objects move the way they are supposed to.\n var added = linesFor(0, text.length - 1)\n update(lastLine, lastLine.text, lastSpans)\n if (nlines) { doc.remove(from.line, nlines) }\n if (added.length) { doc.insert(from.line, added) }\n } else if (firstLine == lastLine) {\n if (text.length == 1) {\n update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans)\n } else {\n var added$1 = linesFor(1, text.length - 1)\n added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight))\n update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0))\n doc.insert(from.line + 1, added$1)\n }\n } else if (text.length == 1) {\n update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0))\n doc.remove(from.line + 1, nlines)\n } else {\n update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0))\n update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans)\n var added$2 = linesFor(1, text.length - 1)\n if (nlines > 1) { doc.remove(from.line + 1, nlines - 1) }\n doc.insert(from.line + 1, added$2)\n }\n\n signalLater(doc, \"change\", doc, change)\n}\n\n// Call f for all linked documents.\nfunction linkedDocs(doc, f, sharedHistOnly) {\n function propagate(doc, skip, sharedHist) {\n if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) {\n var rel = doc.linked[i]\n if (rel.doc == skip) { continue }\n var shared = sharedHist && rel.sharedHist\n if (sharedHistOnly && !shared) { continue }\n f(rel.doc, shared)\n propagate(rel.doc, doc, shared)\n } }\n }\n propagate(doc, null, true)\n}\n\n// Attach a document to an editor.\nfunction attachDoc(cm, doc) {\n if (doc.cm) { throw new Error(\"This document is already in use.\") }\n cm.doc = doc\n doc.cm = cm\n estimateLineHeights(cm)\n loadMode(cm)\n setDirectionClass(cm)\n if (!cm.options.lineWrapping) { findMaxLine(cm) }\n cm.options.mode = doc.modeOption\n regChange(cm)\n}\n\nfunction setDirectionClass(cm) {\n ;(cm.doc.direction == \"rtl\" ? addClass : rmClass)(cm.display.lineDiv, \"CodeMirror-rtl\")\n}\n\nfunction directionChanged(cm) {\n runInOp(cm, function () {\n setDirectionClass(cm)\n regChange(cm)\n })\n}\n\nfunction History(startGen) {\n // Arrays of change events and selections. Doing something adds an\n // event to done and clears undo. Undoing moves events from done\n // to undone, redoing moves them in the other direction.\n this.done = []; this.undone = []\n this.undoDepth = Infinity\n // Used to track when changes can be merged into a single undo\n // event\n this.lastModTime = this.lastSelTime = 0\n this.lastOp = this.lastSelOp = null\n this.lastOrigin = this.lastSelOrigin = null\n // Used by the isClean() method\n this.generation = this.maxGeneration = startGen || 1\n}\n\n// Create a history change event from an updateDoc-style change\n// object.\nfunction historyChangeFromChange(doc, change) {\n var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)}\n attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1)\n linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true)\n return histChange\n}\n\n// Pop all selection events off the end of a history array. Stop at\n// a change event.\nfunction clearSelectionEvents(array) {\n while (array.length) {\n var last = lst(array)\n if (last.ranges) { array.pop() }\n else { break }\n }\n}\n\n// Find the top change event in the history. Pop off selection\n// events that are in the way.\nfunction lastChangeEvent(hist, force) {\n if (force) {\n clearSelectionEvents(hist.done)\n return lst(hist.done)\n } else if (hist.done.length && !lst(hist.done).ranges) {\n return lst(hist.done)\n } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {\n hist.done.pop()\n return lst(hist.done)\n }\n}\n\n// Register a change in the history. Merges changes that are within\n// a single operation, or are close together with an origin that\n// allows merging (starting with \"+\") into a single event.\nfunction addChangeToHistory(doc, change, selAfter, opId) {\n var hist = doc.history\n hist.undone.length = 0\n var time = +new Date, cur\n var last\n\n if ((hist.lastOp == opId ||\n hist.lastOrigin == change.origin && change.origin &&\n ((change.origin.charAt(0) == \"+\" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) ||\n change.origin.charAt(0) == \"*\")) &&\n (cur = lastChangeEvent(hist, hist.lastOp == opId))) {\n // Merge this change into the last event\n last = lst(cur.changes)\n if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {\n // Optimized case for simple insertion -- don't want to add\n // new changesets for every character typed\n last.to = changeEnd(change)\n } else {\n // Add new sub-event\n cur.changes.push(historyChangeFromChange(doc, change))\n }\n } else {\n // Can not be merged, start a new event.\n var before = lst(hist.done)\n if (!before || !before.ranges)\n { pushSelectionToHistory(doc.sel, hist.done) }\n cur = {changes: [historyChangeFromChange(doc, change)],\n generation: hist.generation}\n hist.done.push(cur)\n while (hist.done.length > hist.undoDepth) {\n hist.done.shift()\n if (!hist.done[0].ranges) { hist.done.shift() }\n }\n }\n hist.done.push(selAfter)\n hist.generation = ++hist.maxGeneration\n hist.lastModTime = hist.lastSelTime = time\n hist.lastOp = hist.lastSelOp = opId\n hist.lastOrigin = hist.lastSelOrigin = change.origin\n\n if (!last) { signal(doc, \"historyAdded\") }\n}\n\nfunction selectionEventCanBeMerged(doc, origin, prev, sel) {\n var ch = origin.charAt(0)\n return ch == \"*\" ||\n ch == \"+\" &&\n prev.ranges.length == sel.ranges.length &&\n prev.somethingSelected() == sel.somethingSelected() &&\n new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500)\n}\n\n// Called whenever the selection changes, sets the new selection as\n// the pending selection in the history, and pushes the old pending\n// selection into the 'done' array when it was significantly\n// different (in number of selected ranges, emptiness, or time).\nfunction addSelectionToHistory(doc, sel, opId, options) {\n var hist = doc.history, origin = options && options.origin\n\n // A new event is started when the previous origin does not match\n // the current, or the origins don't allow matching. Origins\n // starting with * are always merged, those starting with + are\n // merged when similar and close together in time.\n if (opId == hist.lastSelOp ||\n (origin && hist.lastSelOrigin == origin &&\n (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||\n selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))\n { hist.done[hist.done.length - 1] = sel }\n else\n { pushSelectionToHistory(sel, hist.done) }\n\n hist.lastSelTime = +new Date\n hist.lastSelOrigin = origin\n hist.lastSelOp = opId\n if (options && options.clearRedo !== false)\n { clearSelectionEvents(hist.undone) }\n}\n\nfunction pushSelectionToHistory(sel, dest) {\n var top = lst(dest)\n if (!(top && top.ranges && top.equals(sel)))\n { dest.push(sel) }\n}\n\n// Used to store marked span information in the history.\nfunction attachLocalSpans(doc, change, from, to) {\n var existing = change[\"spans_\" + doc.id], n = 0\n doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) {\n if (line.markedSpans)\n { (existing || (existing = change[\"spans_\" + doc.id] = {}))[n] = line.markedSpans }\n ++n\n })\n}\n\n// When un/re-doing restores text containing marked spans, those\n// that have been explicitly cleared should not be restored.\nfunction removeClearedSpans(spans) {\n if (!spans) { return null }\n var out\n for (var i = 0; i < spans.length; ++i) {\n if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i) } }\n else if (out) { out.push(spans[i]) }\n }\n return !out ? spans : out.length ? out : null\n}\n\n// Retrieve and filter the old marked spans stored in a change event.\nfunction getOldSpans(doc, change) {\n var found = change[\"spans_\" + doc.id]\n if (!found) { return null }\n var nw = []\n for (var i = 0; i < change.text.length; ++i)\n { nw.push(removeClearedSpans(found[i])) }\n return nw\n}\n\n// Used for un/re-doing changes from the history. Combines the\n// result of computing the existing spans with the set of spans that\n// existed in the history (so that deleting around a span and then\n// undoing brings back the span).\nfunction mergeOldSpans(doc, change) {\n var old = getOldSpans(doc, change)\n var stretched = stretchSpansOverChange(doc, change)\n if (!old) { return stretched }\n if (!stretched) { return old }\n\n for (var i = 0; i < old.length; ++i) {\n var oldCur = old[i], stretchCur = stretched[i]\n if (oldCur && stretchCur) {\n spans: for (var j = 0; j < stretchCur.length; ++j) {\n var span = stretchCur[j]\n for (var k = 0; k < oldCur.length; ++k)\n { if (oldCur[k].marker == span.marker) { continue spans } }\n oldCur.push(span)\n }\n } else if (stretchCur) {\n old[i] = stretchCur\n }\n }\n return old\n}\n\n// Used both to provide a JSON-safe object in .getHistory, and, when\n// detaching a document, to split the history in two\nfunction copyHistoryArray(events, newGroup, instantiateSel) {\n var copy = []\n for (var i = 0; i < events.length; ++i) {\n var event = events[i]\n if (event.ranges) {\n copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event)\n continue\n }\n var changes = event.changes, newChanges = []\n copy.push({changes: newChanges})\n for (var j = 0; j < changes.length; ++j) {\n var change = changes[j], m = (void 0)\n newChanges.push({from: change.from, to: change.to, text: change.text})\n if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\\d+)$/)) {\n if (indexOf(newGroup, Number(m[1])) > -1) {\n lst(newChanges)[prop] = change[prop]\n delete change[prop]\n }\n } } }\n }\n }\n return copy\n}\n\n// The 'scroll' parameter given to many of these indicated whether\n// the new cursor position should be scrolled into view after\n// modifying the selection.\n\n// If shift is held or the extend flag is set, extends a range to\n// include a given position (and optionally a second position).\n// Otherwise, simply returns the range between the given positions.\n// Used for cursor motion and such.\nfunction extendRange(range, head, other, extend) {\n if (extend) {\n var anchor = range.anchor\n if (other) {\n var posBefore = cmp(head, anchor) < 0\n if (posBefore != (cmp(other, anchor) < 0)) {\n anchor = head\n head = other\n } else if (posBefore != (cmp(head, other) < 0)) {\n head = other\n }\n }\n return new Range(anchor, head)\n } else {\n return new Range(other || head, head)\n }\n}\n\n// Extend the primary selection range, discard the rest.\nfunction extendSelection(doc, head, other, options, extend) {\n if (extend == null) { extend = doc.cm && (doc.cm.display.shift || doc.extend) }\n setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options)\n}\n\n// Extend all selections (pos is an array of selections with length\n// equal the number of selections)\nfunction extendSelections(doc, heads, options) {\n var out = []\n var extend = doc.cm && (doc.cm.display.shift || doc.extend)\n for (var i = 0; i < doc.sel.ranges.length; i++)\n { out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend) }\n var newSel = normalizeSelection(out, doc.sel.primIndex)\n setSelection(doc, newSel, options)\n}\n\n// Updates a single range in the selection.\nfunction replaceOneSelection(doc, i, range, options) {\n var ranges = doc.sel.ranges.slice(0)\n ranges[i] = range\n setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options)\n}\n\n// Reset the selection to a single range.\nfunction setSimpleSelection(doc, anchor, head, options) {\n setSelection(doc, simpleSelection(anchor, head), options)\n}\n\n// Give beforeSelectionChange handlers a change to influence a\n// selection update.\nfunction filterSelectionChange(doc, sel, options) {\n var obj = {\n ranges: sel.ranges,\n update: function(ranges) {\n var this$1 = this;\n\n this.ranges = []\n for (var i = 0; i < ranges.length; i++)\n { this$1.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),\n clipPos(doc, ranges[i].head)) }\n },\n origin: options && options.origin\n }\n signal(doc, \"beforeSelectionChange\", doc, obj)\n if (doc.cm) { signal(doc.cm, \"beforeSelectionChange\", doc.cm, obj) }\n if (obj.ranges != sel.ranges) { return normalizeSelection(obj.ranges, obj.ranges.length - 1) }\n else { return sel }\n}\n\nfunction setSelectionReplaceHistory(doc, sel, options) {\n var done = doc.history.done, last = lst(done)\n if (last && last.ranges) {\n done[done.length - 1] = sel\n setSelectionNoUndo(doc, sel, options)\n } else {\n setSelection(doc, sel, options)\n }\n}\n\n// Set a new selection.\nfunction setSelection(doc, sel, options) {\n setSelectionNoUndo(doc, sel, options)\n addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options)\n}\n\nfunction setSelectionNoUndo(doc, sel, options) {\n if (hasHandler(doc, \"beforeSelectionChange\") || doc.cm && hasHandler(doc.cm, \"beforeSelectionChange\"))\n { sel = filterSelectionChange(doc, sel, options) }\n\n var bias = options && options.bias ||\n (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1)\n setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true))\n\n if (!(options && options.scroll === false) && doc.cm)\n { ensureCursorVisible(doc.cm) }\n}\n\nfunction setSelectionInner(doc, sel) {\n if (sel.equals(doc.sel)) { return }\n\n doc.sel = sel\n\n if (doc.cm) {\n doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true\n signalCursorActivity(doc.cm)\n }\n signalLater(doc, \"cursorActivity\", doc)\n}\n\n// Verify that the selection does not partially select any atomic\n// marked ranges.\nfunction reCheckSelection(doc) {\n setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false))\n}\n\n// Return a selection that does not partially select any atomic\n// ranges.\nfunction skipAtomicInSelection(doc, sel, bias, mayClear) {\n var out\n for (var i = 0; i < sel.ranges.length; i++) {\n var range = sel.ranges[i]\n var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i]\n var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear)\n var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear)\n if (out || newAnchor != range.anchor || newHead != range.head) {\n if (!out) { out = sel.ranges.slice(0, i) }\n out[i] = new Range(newAnchor, newHead)\n }\n }\n return out ? normalizeSelection(out, sel.primIndex) : sel\n}\n\nfunction skipAtomicInner(doc, pos, oldPos, dir, mayClear) {\n var line = getLine(doc, pos.line)\n if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {\n var sp = line.markedSpans[i], m = sp.marker\n if ((sp.from == null || (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&\n (sp.to == null || (m.inclusiveRight ? sp.to >= pos.ch : sp.to > pos.ch))) {\n if (mayClear) {\n signal(m, \"beforeCursorEnter\")\n if (m.explicitlyCleared) {\n if (!line.markedSpans) { break }\n else {--i; continue}\n }\n }\n if (!m.atomic) { continue }\n\n if (oldPos) {\n var near = m.find(dir < 0 ? 1 : -1), diff = (void 0)\n if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft)\n { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null) }\n if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0))\n { return skipAtomicInner(doc, near, pos, dir, mayClear) }\n }\n\n var far = m.find(dir < 0 ? -1 : 1)\n if (dir < 0 ? m.inclusiveLeft : m.inclusiveRight)\n { far = movePos(doc, far, dir, far.line == pos.line ? line : null) }\n return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null\n }\n } }\n return pos\n}\n\n// Ensure a given position is not inside an atomic range.\nfunction skipAtomic(doc, pos, oldPos, bias, mayClear) {\n var dir = bias || 1\n var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) ||\n (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) ||\n skipAtomicInner(doc, pos, oldPos, -dir, mayClear) ||\n (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true))\n if (!found) {\n doc.cantEdit = true\n return Pos(doc.first, 0)\n }\n return found\n}\n\nfunction movePos(doc, pos, dir, line) {\n if (dir < 0 && pos.ch == 0) {\n if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) }\n else { return null }\n } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) {\n if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) }\n else { return null }\n } else {\n return new Pos(pos.line, pos.ch + dir)\n }\n}\n\nfunction selectAll(cm) {\n cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll)\n}\n\n// UPDATING\n\n// Allow \"beforeChange\" event handlers to influence a change\nfunction filterChange(doc, change, update) {\n var obj = {\n canceled: false,\n from: change.from,\n to: change.to,\n text: change.text,\n origin: change.origin,\n cancel: function () { return obj.canceled = true; }\n }\n if (update) { obj.update = function (from, to, text, origin) {\n if (from) { obj.from = clipPos(doc, from) }\n if (to) { obj.to = clipPos(doc, to) }\n if (text) { obj.text = text }\n if (origin !== undefined) { obj.origin = origin }\n } }\n signal(doc, \"beforeChange\", doc, obj)\n if (doc.cm) { signal(doc.cm, \"beforeChange\", doc.cm, obj) }\n\n if (obj.canceled) { return null }\n return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}\n}\n\n// Apply a change to a document, and add it to the document's\n// history, and propagating it to all linked documents.\nfunction makeChange(doc, change, ignoreReadOnly) {\n if (doc.cm) {\n if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) }\n if (doc.cm.state.suppressEdits) { return }\n }\n\n if (hasHandler(doc, \"beforeChange\") || doc.cm && hasHandler(doc.cm, \"beforeChange\")) {\n change = filterChange(doc, change, true)\n if (!change) { return }\n }\n\n // Possibly split or suppress the update based on the presence\n // of read-only spans in its range.\n var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to)\n if (split) {\n for (var i = split.length - 1; i >= 0; --i)\n { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [\"\"] : change.text}) }\n } else {\n makeChangeInner(doc, change)\n }\n}\n\nfunction makeChangeInner(doc, change) {\n if (change.text.length == 1 && change.text[0] == \"\" && cmp(change.from, change.to) == 0) { return }\n var selAfter = computeSelAfterChange(doc, change)\n addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN)\n\n makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change))\n var rebased = []\n\n linkedDocs(doc, function (doc, sharedHist) {\n if (!sharedHist && indexOf(rebased, doc.history) == -1) {\n rebaseHist(doc.history, change)\n rebased.push(doc.history)\n }\n makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change))\n })\n}\n\n// Revert a change stored in a document's history.\nfunction makeChangeFromHistory(doc, type, allowSelectionOnly) {\n if (doc.cm && doc.cm.state.suppressEdits && !allowSelectionOnly) { return }\n\n var hist = doc.history, event, selAfter = doc.sel\n var source = type == \"undo\" ? hist.done : hist.undone, dest = type == \"undo\" ? hist.undone : hist.done\n\n // Verify that there is a useable event (so that ctrl-z won't\n // needlessly clear selection events)\n var i = 0\n for (; i < source.length; i++) {\n event = source[i]\n if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)\n { break }\n }\n if (i == source.length) { return }\n hist.lastOrigin = hist.lastSelOrigin = null\n\n for (;;) {\n event = source.pop()\n if (event.ranges) {\n pushSelectionToHistory(event, dest)\n if (allowSelectionOnly && !event.equals(doc.sel)) {\n setSelection(doc, event, {clearRedo: false})\n return\n }\n selAfter = event\n }\n else { break }\n }\n\n // Build up a reverse change object to add to the opposite history\n // stack (redo when undoing, and vice versa).\n var antiChanges = []\n pushSelectionToHistory(selAfter, dest)\n dest.push({changes: antiChanges, generation: hist.generation})\n hist.generation = event.generation || ++hist.maxGeneration\n\n var filter = hasHandler(doc, \"beforeChange\") || doc.cm && hasHandler(doc.cm, \"beforeChange\")\n\n var loop = function ( i ) {\n var change = event.changes[i]\n change.origin = type\n if (filter && !filterChange(doc, change, false)) {\n source.length = 0\n return {}\n }\n\n antiChanges.push(historyChangeFromChange(doc, change))\n\n var after = i ? computeSelAfterChange(doc, change) : lst(source)\n makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change))\n if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}) }\n var rebased = []\n\n // Propagate to the linked documents\n linkedDocs(doc, function (doc, sharedHist) {\n if (!sharedHist && indexOf(rebased, doc.history) == -1) {\n rebaseHist(doc.history, change)\n rebased.push(doc.history)\n }\n makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change))\n })\n };\n\n for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) {\n var returned = loop( i$1 );\n\n if ( returned ) return returned.v;\n }\n}\n\n// Sub-views need their line numbers shifted when text is added\n// above or below them in the parent document.\nfunction shiftDoc(doc, distance) {\n if (distance == 0) { return }\n doc.first += distance\n doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range(\n Pos(range.anchor.line + distance, range.anchor.ch),\n Pos(range.head.line + distance, range.head.ch)\n ); }), doc.sel.primIndex)\n if (doc.cm) {\n regChange(doc.cm, doc.first, doc.first - distance, distance)\n for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)\n { regLineChange(doc.cm, l, \"gutter\") }\n }\n}\n\n// More lower-level change function, handling only a single document\n// (not linked ones).\nfunction makeChangeSingleDoc(doc, change, selAfter, spans) {\n if (doc.cm && !doc.cm.curOp)\n { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) }\n\n if (change.to.line < doc.first) {\n shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line))\n return\n }\n if (change.from.line > doc.lastLine()) { return }\n\n // Clip the change to the size of this doc\n if (change.from.line < doc.first) {\n var shift = change.text.length - 1 - (doc.first - change.from.line)\n shiftDoc(doc, shift)\n change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),\n text: [lst(change.text)], origin: change.origin}\n }\n var last = doc.lastLine()\n if (change.to.line > last) {\n change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),\n text: [change.text[0]], origin: change.origin}\n }\n\n change.removed = getBetween(doc, change.from, change.to)\n\n if (!selAfter) { selAfter = computeSelAfterChange(doc, change) }\n if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans) }\n else { updateDoc(doc, change, spans) }\n setSelectionNoUndo(doc, selAfter, sel_dontScroll)\n}\n\n// Handle the interaction of a change to a document with the editor\n// that this document is part of.\nfunction makeChangeSingleDocInEditor(cm, change, spans) {\n var doc = cm.doc, display = cm.display, from = change.from, to = change.to\n\n var recomputeMaxLength = false, checkWidthStart = from.line\n if (!cm.options.lineWrapping) {\n checkWidthStart = lineNo(visualLine(getLine(doc, from.line)))\n doc.iter(checkWidthStart, to.line + 1, function (line) {\n if (line == display.maxLine) {\n recomputeMaxLength = true\n return true\n }\n })\n }\n\n if (doc.sel.contains(change.from, change.to) > -1)\n { signalCursorActivity(cm) }\n\n updateDoc(doc, change, spans, estimateHeight(cm))\n\n if (!cm.options.lineWrapping) {\n doc.iter(checkWidthStart, from.line + change.text.length, function (line) {\n var len = lineLength(line)\n if (len > display.maxLineLength) {\n display.maxLine = line\n display.maxLineLength = len\n display.maxLineChanged = true\n recomputeMaxLength = false\n }\n })\n if (recomputeMaxLength) { cm.curOp.updateMaxLine = true }\n }\n\n retreatFrontier(doc, from.line)\n startWorker(cm, 400)\n\n var lendiff = change.text.length - (to.line - from.line) - 1\n // Remember that these lines changed, for updating the display\n if (change.full)\n { regChange(cm) }\n else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))\n { regLineChange(cm, from.line, \"text\") }\n else\n { regChange(cm, from.line, to.line + 1, lendiff) }\n\n var changesHandler = hasHandler(cm, \"changes\"), changeHandler = hasHandler(cm, \"change\")\n if (changeHandler || changesHandler) {\n var obj = {\n from: from, to: to,\n text: change.text,\n removed: change.removed,\n origin: change.origin\n }\n if (changeHandler) { signalLater(cm, \"change\", cm, obj) }\n if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj) }\n }\n cm.display.selForContextMenu = null\n}\n\nfunction replaceRange(doc, code, from, to, origin) {\n if (!to) { to = from }\n if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp }\n if (typeof code == \"string\") { code = doc.splitLines(code) }\n makeChange(doc, {from: from, to: to, text: code, origin: origin})\n}\n\n// Rebasing/resetting history to deal with externally-sourced changes\n\nfunction rebaseHistSelSingle(pos, from, to, diff) {\n if (to < pos.line) {\n pos.line += diff\n } else if (from < pos.line) {\n pos.line = from\n pos.ch = 0\n }\n}\n\n// Tries to rebase an array of history events given a change in the\n// document. If the change touches the same lines as the event, the\n// event, and everything 'behind' it, is discarded. If the change is\n// before the event, the event's positions are updated. Uses a\n// copy-on-write scheme for the positions, to avoid having to\n// reallocate them all on every rebase, but also avoid problems with\n// shared position objects being unsafely updated.\nfunction rebaseHistArray(array, from, to, diff) {\n for (var i = 0; i < array.length; ++i) {\n var sub = array[i], ok = true\n if (sub.ranges) {\n if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true }\n for (var j = 0; j < sub.ranges.length; j++) {\n rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff)\n rebaseHistSelSingle(sub.ranges[j].head, from, to, diff)\n }\n continue\n }\n for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) {\n var cur = sub.changes[j$1]\n if (to < cur.from.line) {\n cur.from = Pos(cur.from.line + diff, cur.from.ch)\n cur.to = Pos(cur.to.line + diff, cur.to.ch)\n } else if (from <= cur.to.line) {\n ok = false\n break\n }\n }\n if (!ok) {\n array.splice(0, i + 1)\n i = 0\n }\n }\n}\n\nfunction rebaseHist(hist, change) {\n var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1\n rebaseHistArray(hist.done, from, to, diff)\n rebaseHistArray(hist.undone, from, to, diff)\n}\n\n// Utility for applying a change to a line by handle or number,\n// returning the number and optionally registering the line as\n// changed.\nfunction changeLine(doc, handle, changeType, op) {\n var no = handle, line = handle\n if (typeof handle == \"number\") { line = getLine(doc, clipLine(doc, handle)) }\n else { no = lineNo(handle) }\n if (no == null) { return null }\n if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType) }\n return line\n}\n\n// The document is represented as a BTree consisting of leaves, with\n// chunk of lines in them, and branches, with up to ten leaves or\n// other branch nodes below them. The top node is always a branch\n// node, and is the document object itself (meaning it has\n// additional methods and properties).\n//\n// All nodes have parent links. The tree is used both to go from\n// line numbers to line objects, and to go from objects to numbers.\n// It also indexes by height, and is used to convert between height\n// and line object, and to find the total height of the document.\n//\n// See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html\n\nfunction LeafChunk(lines) {\n var this$1 = this;\n\n this.lines = lines\n this.parent = null\n var height = 0\n for (var i = 0; i < lines.length; ++i) {\n lines[i].parent = this$1\n height += lines[i].height\n }\n this.height = height\n}\n\nLeafChunk.prototype = {\n chunkSize: function chunkSize() { return this.lines.length },\n\n // Remove the n lines at offset 'at'.\n removeInner: function removeInner(at, n) {\n var this$1 = this;\n\n for (var i = at, e = at + n; i < e; ++i) {\n var line = this$1.lines[i]\n this$1.height -= line.height\n cleanUpLine(line)\n signalLater(line, \"delete\")\n }\n this.lines.splice(at, n)\n },\n\n // Helper used to collapse a small branch into a single leaf.\n collapse: function collapse(lines) {\n lines.push.apply(lines, this.lines)\n },\n\n // Insert the given array of lines at offset 'at', count them as\n // having the given height.\n insertInner: function insertInner(at, lines, height) {\n var this$1 = this;\n\n this.height += height\n this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at))\n for (var i = 0; i < lines.length; ++i) { lines[i].parent = this$1 }\n },\n\n // Used to iterate over a part of the tree.\n iterN: function iterN(at, n, op) {\n var this$1 = this;\n\n for (var e = at + n; at < e; ++at)\n { if (op(this$1.lines[at])) { return true } }\n }\n}\n\nfunction BranchChunk(children) {\n var this$1 = this;\n\n this.children = children\n var size = 0, height = 0\n for (var i = 0; i < children.length; ++i) {\n var ch = children[i]\n size += ch.chunkSize(); height += ch.height\n ch.parent = this$1\n }\n this.size = size\n this.height = height\n this.parent = null\n}\n\nBranchChunk.prototype = {\n chunkSize: function chunkSize() { return this.size },\n\n removeInner: function removeInner(at, n) {\n var this$1 = this;\n\n this.size -= n\n for (var i = 0; i < this.children.length; ++i) {\n var child = this$1.children[i], sz = child.chunkSize()\n if (at < sz) {\n var rm = Math.min(n, sz - at), oldHeight = child.height\n child.removeInner(at, rm)\n this$1.height -= oldHeight - child.height\n if (sz == rm) { this$1.children.splice(i--, 1); child.parent = null }\n if ((n -= rm) == 0) { break }\n at = 0\n } else { at -= sz }\n }\n // If the result is smaller than 25 lines, ensure that it is a\n // single leaf node.\n if (this.size - n < 25 &&\n (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {\n var lines = []\n this.collapse(lines)\n this.children = [new LeafChunk(lines)]\n this.children[0].parent = this\n }\n },\n\n collapse: function collapse(lines) {\n var this$1 = this;\n\n for (var i = 0; i < this.children.length; ++i) { this$1.children[i].collapse(lines) }\n },\n\n insertInner: function insertInner(at, lines, height) {\n var this$1 = this;\n\n this.size += lines.length\n this.height += height\n for (var i = 0; i < this.children.length; ++i) {\n var child = this$1.children[i], sz = child.chunkSize()\n if (at <= sz) {\n child.insertInner(at, lines, height)\n if (child.lines && child.lines.length > 50) {\n // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced.\n // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest.\n var remaining = child.lines.length % 25 + 25\n for (var pos = remaining; pos < child.lines.length;) {\n var leaf = new LeafChunk(child.lines.slice(pos, pos += 25))\n child.height -= leaf.height\n this$1.children.splice(++i, 0, leaf)\n leaf.parent = this$1\n }\n child.lines = child.lines.slice(0, remaining)\n this$1.maybeSpill()\n }\n break\n }\n at -= sz\n }\n },\n\n // When a node has grown, check whether it should be split.\n maybeSpill: function maybeSpill() {\n if (this.children.length <= 10) { return }\n var me = this\n do {\n var spilled = me.children.splice(me.children.length - 5, 5)\n var sibling = new BranchChunk(spilled)\n if (!me.parent) { // Become the parent node\n var copy = new BranchChunk(me.children)\n copy.parent = me\n me.children = [copy, sibling]\n me = copy\n } else {\n me.size -= sibling.size\n me.height -= sibling.height\n var myIndex = indexOf(me.parent.children, me)\n me.parent.children.splice(myIndex + 1, 0, sibling)\n }\n sibling.parent = me.parent\n } while (me.children.length > 10)\n me.parent.maybeSpill()\n },\n\n iterN: function iterN(at, n, op) {\n var this$1 = this;\n\n for (var i = 0; i < this.children.length; ++i) {\n var child = this$1.children[i], sz = child.chunkSize()\n if (at < sz) {\n var used = Math.min(n, sz - at)\n if (child.iterN(at, used, op)) { return true }\n if ((n -= used) == 0) { break }\n at = 0\n } else { at -= sz }\n }\n }\n}\n\n// Line widgets are block elements displayed above or below a line.\n\nvar LineWidget = function(doc, node, options) {\n var this$1 = this;\n\n if (options) { for (var opt in options) { if (options.hasOwnProperty(opt))\n { this$1[opt] = options[opt] } } }\n this.doc = doc\n this.node = node\n};\n\nLineWidget.prototype.clear = function () {\n var this$1 = this;\n\n var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line)\n if (no == null || !ws) { return }\n for (var i = 0; i < ws.length; ++i) { if (ws[i] == this$1) { ws.splice(i--, 1) } }\n if (!ws.length) { line.widgets = null }\n var height = widgetHeight(this)\n updateLineHeight(line, Math.max(0, line.height - height))\n if (cm) {\n runInOp(cm, function () {\n adjustScrollWhenAboveVisible(cm, line, -height)\n regLineChange(cm, no, \"widget\")\n })\n signalLater(cm, \"lineWidgetCleared\", cm, this, no)\n }\n};\n\nLineWidget.prototype.changed = function () {\n var this$1 = this;\n\n var oldH = this.height, cm = this.doc.cm, line = this.line\n this.height = null\n var diff = widgetHeight(this) - oldH\n if (!diff) { return }\n updateLineHeight(line, line.height + diff)\n if (cm) {\n runInOp(cm, function () {\n cm.curOp.forceUpdate = true\n adjustScrollWhenAboveVisible(cm, line, diff)\n signalLater(cm, \"lineWidgetChanged\", cm, this$1, lineNo(line))\n })\n }\n};\neventMixin(LineWidget)\n\nfunction adjustScrollWhenAboveVisible(cm, line, diff) {\n if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))\n { addToScrollTop(cm, diff) }\n}\n\nfunction addLineWidget(doc, handle, node, options) {\n var widget = new LineWidget(doc, node, options)\n var cm = doc.cm\n if (cm && widget.noHScroll) { cm.display.alignWidgets = true }\n changeLine(doc, handle, \"widget\", function (line) {\n var widgets = line.widgets || (line.widgets = [])\n if (widget.insertAt == null) { widgets.push(widget) }\n else { widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget) }\n widget.line = line\n if (cm && !lineIsHidden(doc, line)) {\n var aboveVisible = heightAtLine(line) < doc.scrollTop\n updateLineHeight(line, line.height + widgetHeight(widget))\n if (aboveVisible) { addToScrollTop(cm, widget.height) }\n cm.curOp.forceUpdate = true\n }\n return true\n })\n signalLater(cm, \"lineWidgetAdded\", cm, widget, typeof handle == \"number\" ? handle : lineNo(handle))\n return widget\n}\n\n// TEXTMARKERS\n\n// Created with markText and setBookmark methods. A TextMarker is a\n// handle that can be used to clear or find a marked position in the\n// document. Line objects hold arrays (markedSpans) containing\n// {from, to, marker} object pointing to such marker objects, and\n// indicating that such a marker is present on that line. Multiple\n// lines may point to the same marker when it spans across lines.\n// The spans will have null for their from/to properties when the\n// marker continues beyond the start/end of the line. Markers have\n// links back to the lines they currently touch.\n\n// Collapsed markers have unique ids, in order to be able to order\n// them, which is needed for uniquely determining an outer marker\n// when they overlap (they may nest, but not partially overlap).\nvar nextMarkerId = 0\n\nvar TextMarker = function(doc, type) {\n this.lines = []\n this.type = type\n this.doc = doc\n this.id = ++nextMarkerId\n};\n\n// Clear the marker.\nTextMarker.prototype.clear = function () {\n var this$1 = this;\n\n if (this.explicitlyCleared) { return }\n var cm = this.doc.cm, withOp = cm && !cm.curOp\n if (withOp) { startOperation(cm) }\n if (hasHandler(this, \"clear\")) {\n var found = this.find()\n if (found) { signalLater(this, \"clear\", found.from, found.to) }\n }\n var min = null, max = null\n for (var i = 0; i < this.lines.length; ++i) {\n var line = this$1.lines[i]\n var span = getMarkedSpanFor(line.markedSpans, this$1)\n if (cm && !this$1.collapsed) { regLineChange(cm, lineNo(line), \"text\") }\n else if (cm) {\n if (span.to != null) { max = lineNo(line) }\n if (span.from != null) { min = lineNo(line) }\n }\n line.markedSpans = removeMarkedSpan(line.markedSpans, span)\n if (span.from == null && this$1.collapsed && !lineIsHidden(this$1.doc, line) && cm)\n { updateLineHeight(line, textHeight(cm.display)) }\n }\n if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) {\n var visual = visualLine(this$1.lines[i$1]), len = lineLength(visual)\n if (len > cm.display.maxLineLength) {\n cm.display.maxLine = visual\n cm.display.maxLineLength = len\n cm.display.maxLineChanged = true\n }\n } }\n\n if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1) }\n this.lines.length = 0\n this.explicitlyCleared = true\n if (this.atomic && this.doc.cantEdit) {\n this.doc.cantEdit = false\n if (cm) { reCheckSelection(cm.doc) }\n }\n if (cm) { signalLater(cm, \"markerCleared\", cm, this, min, max) }\n if (withOp) { endOperation(cm) }\n if (this.parent) { this.parent.clear() }\n};\n\n// Find the position of the marker in the document. Returns a {from,\n// to} object by default. Side can be passed to get a specific side\n// -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the\n// Pos objects returned contain a line object, rather than a line\n// number (used to prevent looking up the same line twice).\nTextMarker.prototype.find = function (side, lineObj) {\n var this$1 = this;\n\n if (side == null && this.type == \"bookmark\") { side = 1 }\n var from, to\n for (var i = 0; i < this.lines.length; ++i) {\n var line = this$1.lines[i]\n var span = getMarkedSpanFor(line.markedSpans, this$1)\n if (span.from != null) {\n from = Pos(lineObj ? line : lineNo(line), span.from)\n if (side == -1) { return from }\n }\n if (span.to != null) {\n to = Pos(lineObj ? line : lineNo(line), span.to)\n if (side == 1) { return to }\n }\n }\n return from && {from: from, to: to}\n};\n\n// Signals that the marker's widget changed, and surrounding layout\n// should be recomputed.\nTextMarker.prototype.changed = function () {\n var this$1 = this;\n\n var pos = this.find(-1, true), widget = this, cm = this.doc.cm\n if (!pos || !cm) { return }\n runInOp(cm, function () {\n var line = pos.line, lineN = lineNo(pos.line)\n var view = findViewForLine(cm, lineN)\n if (view) {\n clearLineMeasurementCacheFor(view)\n cm.curOp.selectionChanged = cm.curOp.forceUpdate = true\n }\n cm.curOp.updateMaxLine = true\n if (!lineIsHidden(widget.doc, line) && widget.height != null) {\n var oldHeight = widget.height\n widget.height = null\n var dHeight = widgetHeight(widget) - oldHeight\n if (dHeight)\n { updateLineHeight(line, line.height + dHeight) }\n }\n signalLater(cm, \"markerChanged\", cm, this$1)\n })\n};\n\nTextMarker.prototype.attachLine = function (line) {\n if (!this.lines.length && this.doc.cm) {\n var op = this.doc.cm.curOp\n if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)\n { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this) }\n }\n this.lines.push(line)\n};\n\nTextMarker.prototype.detachLine = function (line) {\n this.lines.splice(indexOf(this.lines, line), 1)\n if (!this.lines.length && this.doc.cm) {\n var op = this.doc.cm.curOp\n ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this)\n }\n};\neventMixin(TextMarker)\n\n// Create a marker, wire it up to the right lines, and\nfunction markText(doc, from, to, options, type) {\n // Shared markers (across linked documents) are handled separately\n // (markTextShared will call out to this again, once per\n // document).\n if (options && options.shared) { return markTextShared(doc, from, to, options, type) }\n // Ensure we are in an operation.\n if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) }\n\n var marker = new TextMarker(doc, type), diff = cmp(from, to)\n if (options) { copyObj(options, marker, false) }\n // Don't connect empty markers unless clearWhenEmpty is false\n if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)\n { return marker }\n if (marker.replacedWith) {\n // Showing up as a widget implies collapsed (widget replaces text)\n marker.collapsed = true\n marker.widgetNode = eltP(\"span\", [marker.replacedWith], \"CodeMirror-widget\")\n if (!options.handleMouseEvents) { marker.widgetNode.setAttribute(\"cm-ignore-events\", \"true\") }\n if (options.insertLeft) { marker.widgetNode.insertLeft = true }\n }\n if (marker.collapsed) {\n if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||\n from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))\n { throw new Error(\"Inserting collapsed marker partially overlapping an existing one\") }\n seeCollapsedSpans()\n }\n\n if (marker.addToHistory)\n { addChangeToHistory(doc, {from: from, to: to, origin: \"markText\"}, doc.sel, NaN) }\n\n var curLine = from.line, cm = doc.cm, updateMaxLine\n doc.iter(curLine, to.line + 1, function (line) {\n if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)\n { updateMaxLine = true }\n if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0) }\n addMarkedSpan(line, new MarkedSpan(marker,\n curLine == from.line ? from.ch : null,\n curLine == to.line ? to.ch : null))\n ++curLine\n })\n // lineIsHidden depends on the presence of the spans, so needs a second pass\n if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) {\n if (lineIsHidden(doc, line)) { updateLineHeight(line, 0) }\n }) }\n\n if (marker.clearOnEnter) { on(marker, \"beforeCursorEnter\", function () { return marker.clear(); }) }\n\n if (marker.readOnly) {\n seeReadOnlySpans()\n if (doc.history.done.length || doc.history.undone.length)\n { doc.clearHistory() }\n }\n if (marker.collapsed) {\n marker.id = ++nextMarkerId\n marker.atomic = true\n }\n if (cm) {\n // Sync editor state\n if (updateMaxLine) { cm.curOp.updateMaxLine = true }\n if (marker.collapsed)\n { regChange(cm, from.line, to.line + 1) }\n else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css)\n { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, \"text\") } }\n if (marker.atomic) { reCheckSelection(cm.doc) }\n signalLater(cm, \"markerAdded\", cm, marker)\n }\n return marker\n}\n\n// SHARED TEXTMARKERS\n\n// A shared marker spans multiple linked documents. It is\n// implemented as a meta-marker-object controlling multiple normal\n// markers.\nvar SharedTextMarker = function(markers, primary) {\n var this$1 = this;\n\n this.markers = markers\n this.primary = primary\n for (var i = 0; i < markers.length; ++i)\n { markers[i].parent = this$1 }\n};\n\nSharedTextMarker.prototype.clear = function () {\n var this$1 = this;\n\n if (this.explicitlyCleared) { return }\n this.explicitlyCleared = true\n for (var i = 0; i < this.markers.length; ++i)\n { this$1.markers[i].clear() }\n signalLater(this, \"clear\")\n};\n\nSharedTextMarker.prototype.find = function (side, lineObj) {\n return this.primary.find(side, lineObj)\n};\neventMixin(SharedTextMarker)\n\nfunction markTextShared(doc, from, to, options, type) {\n options = copyObj(options)\n options.shared = false\n var markers = [markText(doc, from, to, options, type)], primary = markers[0]\n var widget = options.widgetNode\n linkedDocs(doc, function (doc) {\n if (widget) { options.widgetNode = widget.cloneNode(true) }\n markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type))\n for (var i = 0; i < doc.linked.length; ++i)\n { if (doc.linked[i].isParent) { return } }\n primary = lst(markers)\n })\n return new SharedTextMarker(markers, primary)\n}\n\nfunction findSharedMarkers(doc) {\n return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; })\n}\n\nfunction copySharedMarkers(doc, markers) {\n for (var i = 0; i < markers.length; i++) {\n var marker = markers[i], pos = marker.find()\n var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to)\n if (cmp(mFrom, mTo)) {\n var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type)\n marker.markers.push(subMark)\n subMark.parent = marker\n }\n }\n}\n\nfunction detachSharedMarkers(markers) {\n var loop = function ( i ) {\n var marker = markers[i], linked = [marker.primary.doc]\n linkedDocs(marker.primary.doc, function (d) { return linked.push(d); })\n for (var j = 0; j < marker.markers.length; j++) {\n var subMarker = marker.markers[j]\n if (indexOf(linked, subMarker.doc) == -1) {\n subMarker.parent = null\n marker.markers.splice(j--, 1)\n }\n }\n };\n\n for (var i = 0; i < markers.length; i++) loop( i );\n}\n\nvar nextDocId = 0\nvar Doc = function(text, mode, firstLine, lineSep, direction) {\n if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) }\n if (firstLine == null) { firstLine = 0 }\n\n BranchChunk.call(this, [new LeafChunk([new Line(\"\", null)])])\n this.first = firstLine\n this.scrollTop = this.scrollLeft = 0\n this.cantEdit = false\n this.cleanGeneration = 1\n this.modeFrontier = this.highlightFrontier = firstLine\n var start = Pos(firstLine, 0)\n this.sel = simpleSelection(start)\n this.history = new History(null)\n this.id = ++nextDocId\n this.modeOption = mode\n this.lineSep = lineSep\n this.direction = (direction == \"rtl\") ? \"rtl\" : \"ltr\"\n this.extend = false\n\n if (typeof text == \"string\") { text = this.splitLines(text) }\n updateDoc(this, {from: start, to: start, text: text})\n setSelection(this, simpleSelection(start), sel_dontScroll)\n}\n\nDoc.prototype = createObj(BranchChunk.prototype, {\n constructor: Doc,\n // Iterate over the document. Supports two forms -- with only one\n // argument, it calls that for each line in the document. With\n // three, it iterates over the range given by the first two (with\n // the second being non-inclusive).\n iter: function(from, to, op) {\n if (op) { this.iterN(from - this.first, to - from, op) }\n else { this.iterN(this.first, this.first + this.size, from) }\n },\n\n // Non-public interface for adding and removing lines.\n insert: function(at, lines) {\n var height = 0\n for (var i = 0; i < lines.length; ++i) { height += lines[i].height }\n this.insertInner(at - this.first, lines, height)\n },\n remove: function(at, n) { this.removeInner(at - this.first, n) },\n\n // From here, the methods are part of the public interface. Most\n // are also available from CodeMirror (editor) instances.\n\n getValue: function(lineSep) {\n var lines = getLines(this, this.first, this.first + this.size)\n if (lineSep === false) { return lines }\n return lines.join(lineSep || this.lineSeparator())\n },\n setValue: docMethodOp(function(code) {\n var top = Pos(this.first, 0), last = this.first + this.size - 1\n makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),\n text: this.splitLines(code), origin: \"setValue\", full: true}, true)\n if (this.cm) { scrollToCoords(this.cm, 0, 0) }\n setSelection(this, simpleSelection(top), sel_dontScroll)\n }),\n replaceRange: function(code, from, to, origin) {\n from = clipPos(this, from)\n to = to ? clipPos(this, to) : from\n replaceRange(this, code, from, to, origin)\n },\n getRange: function(from, to, lineSep) {\n var lines = getBetween(this, clipPos(this, from), clipPos(this, to))\n if (lineSep === false) { return lines }\n return lines.join(lineSep || this.lineSeparator())\n },\n\n getLine: function(line) {var l = this.getLineHandle(line); return l && l.text},\n\n getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }},\n getLineNumber: function(line) {return lineNo(line)},\n\n getLineHandleVisualStart: function(line) {\n if (typeof line == \"number\") { line = getLine(this, line) }\n return visualLine(line)\n },\n\n lineCount: function() {return this.size},\n firstLine: function() {return this.first},\n lastLine: function() {return this.first + this.size - 1},\n\n clipPos: function(pos) {return clipPos(this, pos)},\n\n getCursor: function(start) {\n var range = this.sel.primary(), pos\n if (start == null || start == \"head\") { pos = range.head }\n else if (start == \"anchor\") { pos = range.anchor }\n else if (start == \"end\" || start == \"to\" || start === false) { pos = range.to() }\n else { pos = range.from() }\n return pos\n },\n listSelections: function() { return this.sel.ranges },\n somethingSelected: function() {return this.sel.somethingSelected()},\n\n setCursor: docMethodOp(function(line, ch, options) {\n setSimpleSelection(this, clipPos(this, typeof line == \"number\" ? Pos(line, ch || 0) : line), null, options)\n }),\n setSelection: docMethodOp(function(anchor, head, options) {\n setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options)\n }),\n extendSelection: docMethodOp(function(head, other, options) {\n extendSelection(this, clipPos(this, head), other && clipPos(this, other), options)\n }),\n extendSelections: docMethodOp(function(heads, options) {\n extendSelections(this, clipPosArray(this, heads), options)\n }),\n extendSelectionsBy: docMethodOp(function(f, options) {\n var heads = map(this.sel.ranges, f)\n extendSelections(this, clipPosArray(this, heads), options)\n }),\n setSelections: docMethodOp(function(ranges, primary, options) {\n var this$1 = this;\n\n if (!ranges.length) { return }\n var out = []\n for (var i = 0; i < ranges.length; i++)\n { out[i] = new Range(clipPos(this$1, ranges[i].anchor),\n clipPos(this$1, ranges[i].head)) }\n if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex) }\n setSelection(this, normalizeSelection(out, primary), options)\n }),\n addSelection: docMethodOp(function(anchor, head, options) {\n var ranges = this.sel.ranges.slice(0)\n ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)))\n setSelection(this, normalizeSelection(ranges, ranges.length - 1), options)\n }),\n\n getSelection: function(lineSep) {\n var this$1 = this;\n\n var ranges = this.sel.ranges, lines\n for (var i = 0; i < ranges.length; i++) {\n var sel = getBetween(this$1, ranges[i].from(), ranges[i].to())\n lines = lines ? lines.concat(sel) : sel\n }\n if (lineSep === false) { return lines }\n else { return lines.join(lineSep || this.lineSeparator()) }\n },\n getSelections: function(lineSep) {\n var this$1 = this;\n\n var parts = [], ranges = this.sel.ranges\n for (var i = 0; i < ranges.length; i++) {\n var sel = getBetween(this$1, ranges[i].from(), ranges[i].to())\n if (lineSep !== false) { sel = sel.join(lineSep || this$1.lineSeparator()) }\n parts[i] = sel\n }\n return parts\n },\n replaceSelection: function(code, collapse, origin) {\n var dup = []\n for (var i = 0; i < this.sel.ranges.length; i++)\n { dup[i] = code }\n this.replaceSelections(dup, collapse, origin || \"+input\")\n },\n replaceSelections: docMethodOp(function(code, collapse, origin) {\n var this$1 = this;\n\n var changes = [], sel = this.sel\n for (var i = 0; i < sel.ranges.length; i++) {\n var range = sel.ranges[i]\n changes[i] = {from: range.from(), to: range.to(), text: this$1.splitLines(code[i]), origin: origin}\n }\n var newSel = collapse && collapse != \"end\" && computeReplacedSel(this, changes, collapse)\n for (var i$1 = changes.length - 1; i$1 >= 0; i$1--)\n { makeChange(this$1, changes[i$1]) }\n if (newSel) { setSelectionReplaceHistory(this, newSel) }\n else if (this.cm) { ensureCursorVisible(this.cm) }\n }),\n undo: docMethodOp(function() {makeChangeFromHistory(this, \"undo\")}),\n redo: docMethodOp(function() {makeChangeFromHistory(this, \"redo\")}),\n undoSelection: docMethodOp(function() {makeChangeFromHistory(this, \"undo\", true)}),\n redoSelection: docMethodOp(function() {makeChangeFromHistory(this, \"redo\", true)}),\n\n setExtending: function(val) {this.extend = val},\n getExtending: function() {return this.extend},\n\n historySize: function() {\n var hist = this.history, done = 0, undone = 0\n for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done } }\n for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone } }\n return {undo: done, redo: undone}\n },\n clearHistory: function() {this.history = new History(this.history.maxGeneration)},\n\n markClean: function() {\n this.cleanGeneration = this.changeGeneration(true)\n },\n changeGeneration: function(forceSplit) {\n if (forceSplit)\n { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null }\n return this.history.generation\n },\n isClean: function (gen) {\n return this.history.generation == (gen || this.cleanGeneration)\n },\n\n getHistory: function() {\n return {done: copyHistoryArray(this.history.done),\n undone: copyHistoryArray(this.history.undone)}\n },\n setHistory: function(histData) {\n var hist = this.history = new History(this.history.maxGeneration)\n hist.done = copyHistoryArray(histData.done.slice(0), null, true)\n hist.undone = copyHistoryArray(histData.undone.slice(0), null, true)\n },\n\n setGutterMarker: docMethodOp(function(line, gutterID, value) {\n return changeLine(this, line, \"gutter\", function (line) {\n var markers = line.gutterMarkers || (line.gutterMarkers = {})\n markers[gutterID] = value\n if (!value && isEmpty(markers)) { line.gutterMarkers = null }\n return true\n })\n }),\n\n clearGutter: docMethodOp(function(gutterID) {\n var this$1 = this;\n\n this.iter(function (line) {\n if (line.gutterMarkers && line.gutterMarkers[gutterID]) {\n changeLine(this$1, line, \"gutter\", function () {\n line.gutterMarkers[gutterID] = null\n if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null }\n return true\n })\n }\n })\n }),\n\n lineInfo: function(line) {\n var n\n if (typeof line == \"number\") {\n if (!isLine(this, line)) { return null }\n n = line\n line = getLine(this, line)\n if (!line) { return null }\n } else {\n n = lineNo(line)\n if (n == null) { return null }\n }\n return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,\n textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,\n widgets: line.widgets}\n },\n\n addLineClass: docMethodOp(function(handle, where, cls) {\n return changeLine(this, handle, where == \"gutter\" ? \"gutter\" : \"class\", function (line) {\n var prop = where == \"text\" ? \"textClass\"\n : where == \"background\" ? \"bgClass\"\n : where == \"gutter\" ? \"gutterClass\" : \"wrapClass\"\n if (!line[prop]) { line[prop] = cls }\n else if (classTest(cls).test(line[prop])) { return false }\n else { line[prop] += \" \" + cls }\n return true\n })\n }),\n removeLineClass: docMethodOp(function(handle, where, cls) {\n return changeLine(this, handle, where == \"gutter\" ? \"gutter\" : \"class\", function (line) {\n var prop = where == \"text\" ? \"textClass\"\n : where == \"background\" ? \"bgClass\"\n : where == \"gutter\" ? \"gutterClass\" : \"wrapClass\"\n var cur = line[prop]\n if (!cur) { return false }\n else if (cls == null) { line[prop] = null }\n else {\n var found = cur.match(classTest(cls))\n if (!found) { return false }\n var end = found.index + found[0].length\n line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? \"\" : \" \") + cur.slice(end) || null\n }\n return true\n })\n }),\n\n addLineWidget: docMethodOp(function(handle, node, options) {\n return addLineWidget(this, handle, node, options)\n }),\n removeLineWidget: function(widget) { widget.clear() },\n\n markText: function(from, to, options) {\n return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || \"range\")\n },\n setBookmark: function(pos, options) {\n var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),\n insertLeft: options && options.insertLeft,\n clearWhenEmpty: false, shared: options && options.shared,\n handleMouseEvents: options && options.handleMouseEvents}\n pos = clipPos(this, pos)\n return markText(this, pos, pos, realOpts, \"bookmark\")\n },\n findMarksAt: function(pos) {\n pos = clipPos(this, pos)\n var markers = [], spans = getLine(this, pos.line).markedSpans\n if (spans) { for (var i = 0; i < spans.length; ++i) {\n var span = spans[i]\n if ((span.from == null || span.from <= pos.ch) &&\n (span.to == null || span.to >= pos.ch))\n { markers.push(span.marker.parent || span.marker) }\n } }\n return markers\n },\n findMarks: function(from, to, filter) {\n from = clipPos(this, from); to = clipPos(this, to)\n var found = [], lineNo = from.line\n this.iter(from.line, to.line + 1, function (line) {\n var spans = line.markedSpans\n if (spans) { for (var i = 0; i < spans.length; i++) {\n var span = spans[i]\n if (!(span.to != null && lineNo == from.line && from.ch >= span.to ||\n span.from == null && lineNo != from.line ||\n span.from != null && lineNo == to.line && span.from >= to.ch) &&\n (!filter || filter(span.marker)))\n { found.push(span.marker.parent || span.marker) }\n } }\n ++lineNo\n })\n return found\n },\n getAllMarks: function() {\n var markers = []\n this.iter(function (line) {\n var sps = line.markedSpans\n if (sps) { for (var i = 0; i < sps.length; ++i)\n { if (sps[i].from != null) { markers.push(sps[i].marker) } } }\n })\n return markers\n },\n\n posFromIndex: function(off) {\n var ch, lineNo = this.first, sepSize = this.lineSeparator().length\n this.iter(function (line) {\n var sz = line.text.length + sepSize\n if (sz > off) { ch = off; return true }\n off -= sz\n ++lineNo\n })\n return clipPos(this, Pos(lineNo, ch))\n },\n indexFromPos: function (coords) {\n coords = clipPos(this, coords)\n var index = coords.ch\n if (coords.line < this.first || coords.ch < 0) { return 0 }\n var sepSize = this.lineSeparator().length\n this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value\n index += line.text.length + sepSize\n })\n return index\n },\n\n copy: function(copyHistory) {\n var doc = new Doc(getLines(this, this.first, this.first + this.size),\n this.modeOption, this.first, this.lineSep, this.direction)\n doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft\n doc.sel = this.sel\n doc.extend = false\n if (copyHistory) {\n doc.history.undoDepth = this.history.undoDepth\n doc.setHistory(this.getHistory())\n }\n return doc\n },\n\n linkedDoc: function(options) {\n if (!options) { options = {} }\n var from = this.first, to = this.first + this.size\n if (options.from != null && options.from > from) { from = options.from }\n if (options.to != null && options.to < to) { to = options.to }\n var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction)\n if (options.sharedHist) { copy.history = this.history\n ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist})\n copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]\n copySharedMarkers(copy, findSharedMarkers(this))\n return copy\n },\n unlinkDoc: function(other) {\n var this$1 = this;\n\n if (other instanceof CodeMirror) { other = other.doc }\n if (this.linked) { for (var i = 0; i < this.linked.length; ++i) {\n var link = this$1.linked[i]\n if (link.doc != other) { continue }\n this$1.linked.splice(i, 1)\n other.unlinkDoc(this$1)\n detachSharedMarkers(findSharedMarkers(this$1))\n break\n } }\n // If the histories were shared, split them again\n if (other.history == this.history) {\n var splitIds = [other.id]\n linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true)\n other.history = new History(null)\n other.history.done = copyHistoryArray(this.history.done, splitIds)\n other.history.undone = copyHistoryArray(this.history.undone, splitIds)\n }\n },\n iterLinkedDocs: function(f) {linkedDocs(this, f)},\n\n getMode: function() {return this.mode},\n getEditor: function() {return this.cm},\n\n splitLines: function(str) {\n if (this.lineSep) { return str.split(this.lineSep) }\n return splitLinesAuto(str)\n },\n lineSeparator: function() { return this.lineSep || \"\\n\" },\n\n setDirection: docMethodOp(function (dir) {\n if (dir != \"rtl\") { dir = \"ltr\" }\n if (dir == this.direction) { return }\n this.direction = dir\n this.iter(function (line) { return line.order = null; })\n if (this.cm) { directionChanged(this.cm) }\n })\n})\n\n// Public alias.\nDoc.prototype.eachLine = Doc.prototype.iter\n\n// Kludge to work around strange IE behavior where it'll sometimes\n// re-fire a series of drag-related events right after the drop (#1551)\nvar lastDrop = 0\n\nfunction onDrop(e) {\n var cm = this\n clearDragCursor(cm)\n if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))\n { return }\n e_preventDefault(e)\n if (ie) { lastDrop = +new Date }\n var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files\n if (!pos || cm.isReadOnly()) { return }\n // Might be a file drop, in which case we simply extract the text\n // and insert it.\n if (files && files.length && window.FileReader && window.File) {\n var n = files.length, text = Array(n), read = 0\n var loadFile = function (file, i) {\n if (cm.options.allowDropFileTypes &&\n indexOf(cm.options.allowDropFileTypes, file.type) == -1)\n { return }\n\n var reader = new FileReader\n reader.onload = operation(cm, function () {\n var content = reader.result\n if (/[\\x00-\\x08\\x0e-\\x1f]{2}/.test(content)) { content = \"\" }\n text[i] = content\n if (++read == n) {\n pos = clipPos(cm.doc, pos)\n var change = {from: pos, to: pos,\n text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())),\n origin: \"paste\"}\n makeChange(cm.doc, change)\n setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)))\n }\n })\n reader.readAsText(file)\n }\n for (var i = 0; i < n; ++i) { loadFile(files[i], i) }\n } else { // Normal drop\n // Don't do a replace if the drop happened inside of the selected text.\n if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {\n cm.state.draggingText(e)\n // Ensure the editor is re-focused\n setTimeout(function () { return cm.display.input.focus(); }, 20)\n return\n }\n try {\n var text$1 = e.dataTransfer.getData(\"Text\")\n if (text$1) {\n var selected\n if (cm.state.draggingText && !cm.state.draggingText.copy)\n { selected = cm.listSelections() }\n setSelectionNoUndo(cm.doc, simpleSelection(pos, pos))\n if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1)\n { replaceRange(cm.doc, \"\", selected[i$1].anchor, selected[i$1].head, \"drag\") } }\n cm.replaceSelection(text$1, \"around\", \"paste\")\n cm.display.input.focus()\n }\n }\n catch(e){}\n }\n}\n\nfunction onDragStart(cm, e) {\n if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return }\n if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return }\n\n e.dataTransfer.setData(\"Text\", cm.getSelection())\n e.dataTransfer.effectAllowed = \"copyMove\"\n\n // Use dummy image instead of default browsers image.\n // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.\n if (e.dataTransfer.setDragImage && !safari) {\n var img = elt(\"img\", null, null, \"position: fixed; left: 0; top: 0;\")\n img.src = \"data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\"\n if (presto) {\n img.width = img.height = 1\n cm.display.wrapper.appendChild(img)\n // Force a relayout, or Opera won't use our image for some obscure reason\n img._top = img.offsetTop\n }\n e.dataTransfer.setDragImage(img, 0, 0)\n if (presto) { img.parentNode.removeChild(img) }\n }\n}\n\nfunction onDragOver(cm, e) {\n var pos = posFromMouse(cm, e)\n if (!pos) { return }\n var frag = document.createDocumentFragment()\n drawSelectionCursor(cm, pos, frag)\n if (!cm.display.dragCursor) {\n cm.display.dragCursor = elt(\"div\", null, \"CodeMirror-cursors CodeMirror-dragcursors\")\n cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv)\n }\n removeChildrenAndAdd(cm.display.dragCursor, frag)\n}\n\nfunction clearDragCursor(cm) {\n if (cm.display.dragCursor) {\n cm.display.lineSpace.removeChild(cm.display.dragCursor)\n cm.display.dragCursor = null\n }\n}\n\n// These must be handled carefully, because naively registering a\n// handler for each editor will cause the editors to never be\n// garbage collected.\n\nfunction forEachCodeMirror(f) {\n if (!document.getElementsByClassName) { return }\n var byClass = document.getElementsByClassName(\"CodeMirror\")\n for (var i = 0; i < byClass.length; i++) {\n var cm = byClass[i].CodeMirror\n if (cm) { f(cm) }\n }\n}\n\nvar globalsRegistered = false\nfunction ensureGlobalHandlers() {\n if (globalsRegistered) { return }\n registerGlobalHandlers()\n globalsRegistered = true\n}\nfunction registerGlobalHandlers() {\n // When the window resizes, we need to refresh active editors.\n var resizeTimer\n on(window, \"resize\", function () {\n if (resizeTimer == null) { resizeTimer = setTimeout(function () {\n resizeTimer = null\n forEachCodeMirror(onResize)\n }, 100) }\n })\n // When the window loses focus, we want to show the editor as blurred\n on(window, \"blur\", function () { return forEachCodeMirror(onBlur); })\n}\n// Called when the window resizes\nfunction onResize(cm) {\n var d = cm.display\n if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth)\n { return }\n // Might be a text scaling operation, clear size caches.\n d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null\n d.scrollbarsClipped = false\n cm.setSize()\n}\n\nvar keyNames = {\n 3: \"Enter\", 8: \"Backspace\", 9: \"Tab\", 13: \"Enter\", 16: \"Shift\", 17: \"Ctrl\", 18: \"Alt\",\n 19: \"Pause\", 20: \"CapsLock\", 27: \"Esc\", 32: \"Space\", 33: \"PageUp\", 34: \"PageDown\", 35: \"End\",\n 36: \"Home\", 37: \"Left\", 38: \"Up\", 39: \"Right\", 40: \"Down\", 44: \"PrintScrn\", 45: \"Insert\",\n 46: \"Delete\", 59: \";\", 61: \"=\", 91: \"Mod\", 92: \"Mod\", 93: \"Mod\",\n 106: \"*\", 107: \"=\", 109: \"-\", 110: \".\", 111: \"/\", 127: \"Delete\",\n 173: \"-\", 186: \";\", 187: \"=\", 188: \",\", 189: \"-\", 190: \".\", 191: \"/\", 192: \"`\", 219: \"[\", 220: \"\\\\\",\n 221: \"]\", 222: \"'\", 63232: \"Up\", 63233: \"Down\", 63234: \"Left\", 63235: \"Right\", 63272: \"Delete\",\n 63273: \"Home\", 63275: \"End\", 63276: \"PageUp\", 63277: \"PageDown\", 63302: \"Insert\"\n}\n\n// Number keys\nfor (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i) }\n// Alphabetic keys\nfor (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1) }\n// Function keys\nfor (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = \"F\" + i$2 }\n\nvar keyMap = {}\n\nkeyMap.basic = {\n \"Left\": \"goCharLeft\", \"Right\": \"goCharRight\", \"Up\": \"goLineUp\", \"Down\": \"goLineDown\",\n \"End\": \"goLineEnd\", \"Home\": \"goLineStartSmart\", \"PageUp\": \"goPageUp\", \"PageDown\": \"goPageDown\",\n \"Delete\": \"delCharAfter\", \"Backspace\": \"delCharBefore\", \"Shift-Backspace\": \"delCharBefore\",\n \"Tab\": \"defaultTab\", \"Shift-Tab\": \"indentAuto\",\n \"Enter\": \"newlineAndIndent\", \"Insert\": \"toggleOverwrite\",\n \"Esc\": \"singleSelection\"\n}\n// Note that the save and find-related commands aren't defined by\n// default. User code or addons can define them. Unknown commands\n// are simply ignored.\nkeyMap.pcDefault = {\n \"Ctrl-A\": \"selectAll\", \"Ctrl-D\": \"deleteLine\", \"Ctrl-Z\": \"undo\", \"Shift-Ctrl-Z\": \"redo\", \"Ctrl-Y\": \"redo\",\n \"Ctrl-Home\": \"goDocStart\", \"Ctrl-End\": \"goDocEnd\", \"Ctrl-Up\": \"goLineUp\", \"Ctrl-Down\": \"goLineDown\",\n \"Ctrl-Left\": \"goGroupLeft\", \"Ctrl-Right\": \"goGroupRight\", \"Alt-Left\": \"goLineStart\", \"Alt-Right\": \"goLineEnd\",\n \"Ctrl-Backspace\": \"delGroupBefore\", \"Ctrl-Delete\": \"delGroupAfter\", \"Ctrl-S\": \"save\", \"Ctrl-F\": \"find\",\n \"Ctrl-G\": \"findNext\", \"Shift-Ctrl-G\": \"findPrev\", \"Shift-Ctrl-F\": \"replace\", \"Shift-Ctrl-R\": \"replaceAll\",\n \"Ctrl-[\": \"indentLess\", \"Ctrl-]\": \"indentMore\",\n \"Ctrl-U\": \"undoSelection\", \"Shift-Ctrl-U\": \"redoSelection\", \"Alt-U\": \"redoSelection\",\n fallthrough: \"basic\"\n}\n// Very basic readline/emacs-style bindings, which are standard on Mac.\nkeyMap.emacsy = {\n \"Ctrl-F\": \"goCharRight\", \"Ctrl-B\": \"goCharLeft\", \"Ctrl-P\": \"goLineUp\", \"Ctrl-N\": \"goLineDown\",\n \"Alt-F\": \"goWordRight\", \"Alt-B\": \"goWordLeft\", \"Ctrl-A\": \"goLineStart\", \"Ctrl-E\": \"goLineEnd\",\n \"Ctrl-V\": \"goPageDown\", \"Shift-Ctrl-V\": \"goPageUp\", \"Ctrl-D\": \"delCharAfter\", \"Ctrl-H\": \"delCharBefore\",\n \"Alt-D\": \"delWordAfter\", \"Alt-Backspace\": \"delWordBefore\", \"Ctrl-K\": \"killLine\", \"Ctrl-T\": \"transposeChars\",\n \"Ctrl-O\": \"openLine\"\n}\nkeyMap.macDefault = {\n \"Cmd-A\": \"selectAll\", \"Cmd-D\": \"deleteLine\", \"Cmd-Z\": \"undo\", \"Shift-Cmd-Z\": \"redo\", \"Cmd-Y\": \"redo\",\n \"Cmd-Home\": \"goDocStart\", \"Cmd-Up\": \"goDocStart\", \"Cmd-End\": \"goDocEnd\", \"Cmd-Down\": \"goDocEnd\", \"Alt-Left\": \"goGroupLeft\",\n \"Alt-Right\": \"goGroupRight\", \"Cmd-Left\": \"goLineLeft\", \"Cmd-Right\": \"goLineRight\", \"Alt-Backspace\": \"delGroupBefore\",\n \"Ctrl-Alt-Backspace\": \"delGroupAfter\", \"Alt-Delete\": \"delGroupAfter\", \"Cmd-S\": \"save\", \"Cmd-F\": \"find\",\n \"Cmd-G\": \"findNext\", \"Shift-Cmd-G\": \"findPrev\", \"Cmd-Alt-F\": \"replace\", \"Shift-Cmd-Alt-F\": \"replaceAll\",\n \"Cmd-[\": \"indentLess\", \"Cmd-]\": \"indentMore\", \"Cmd-Backspace\": \"delWrappedLineLeft\", \"Cmd-Delete\": \"delWrappedLineRight\",\n \"Cmd-U\": \"undoSelection\", \"Shift-Cmd-U\": \"redoSelection\", \"Ctrl-Up\": \"goDocStart\", \"Ctrl-Down\": \"goDocEnd\",\n fallthrough: [\"basic\", \"emacsy\"]\n}\nkeyMap[\"default\"] = mac ? keyMap.macDefault : keyMap.pcDefault\n\n// KEYMAP DISPATCH\n\nfunction normalizeKeyName(name) {\n var parts = name.split(/-(?!$)/)\n name = parts[parts.length - 1]\n var alt, ctrl, shift, cmd\n for (var i = 0; i < parts.length - 1; i++) {\n var mod = parts[i]\n if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true }\n else if (/^a(lt)?$/i.test(mod)) { alt = true }\n else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true }\n else if (/^s(hift)?$/i.test(mod)) { shift = true }\n else { throw new Error(\"Unrecognized modifier name: \" + mod) }\n }\n if (alt) { name = \"Alt-\" + name }\n if (ctrl) { name = \"Ctrl-\" + name }\n if (cmd) { name = \"Cmd-\" + name }\n if (shift) { name = \"Shift-\" + name }\n return name\n}\n\n// This is a kludge to keep keymaps mostly working as raw objects\n// (backwards compatibility) while at the same time support features\n// like normalization and multi-stroke key bindings. It compiles a\n// new normalized keymap, and then updates the old object to reflect\n// this.\nfunction normalizeKeyMap(keymap) {\n var copy = {}\n for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) {\n var value = keymap[keyname]\n if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue }\n if (value == \"...\") { delete keymap[keyname]; continue }\n\n var keys = map(keyname.split(\" \"), normalizeKeyName)\n for (var i = 0; i < keys.length; i++) {\n var val = (void 0), name = (void 0)\n if (i == keys.length - 1) {\n name = keys.join(\" \")\n val = value\n } else {\n name = keys.slice(0, i + 1).join(\" \")\n val = \"...\"\n }\n var prev = copy[name]\n if (!prev) { copy[name] = val }\n else if (prev != val) { throw new Error(\"Inconsistent bindings for \" + name) }\n }\n delete keymap[keyname]\n } }\n for (var prop in copy) { keymap[prop] = copy[prop] }\n return keymap\n}\n\nfunction lookupKey(key, map, handle, context) {\n map = getKeyMap(map)\n var found = map.call ? map.call(key, context) : map[key]\n if (found === false) { return \"nothing\" }\n if (found === \"...\") { return \"multi\" }\n if (found != null && handle(found)) { return \"handled\" }\n\n if (map.fallthrough) {\n if (Object.prototype.toString.call(map.fallthrough) != \"[object Array]\")\n { return lookupKey(key, map.fallthrough, handle, context) }\n for (var i = 0; i < map.fallthrough.length; i++) {\n var result = lookupKey(key, map.fallthrough[i], handle, context)\n if (result) { return result }\n }\n }\n}\n\n// Modifier key presses don't count as 'real' key presses for the\n// purpose of keymap fallthrough.\nfunction isModifierKey(value) {\n var name = typeof value == \"string\" ? value : keyNames[value.keyCode]\n return name == \"Ctrl\" || name == \"Alt\" || name == \"Shift\" || name == \"Mod\"\n}\n\nfunction addModifierNames(name, event, noShift) {\n var base = name\n if (event.altKey && base != \"Alt\") { name = \"Alt-\" + name }\n if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != \"Ctrl\") { name = \"Ctrl-\" + name }\n if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != \"Cmd\") { name = \"Cmd-\" + name }\n if (!noShift && event.shiftKey && base != \"Shift\") { name = \"Shift-\" + name }\n return name\n}\n\n// Look up the name of a key as indicated by an event object.\nfunction keyName(event, noShift) {\n if (presto && event.keyCode == 34 && event[\"char\"]) { return false }\n var name = keyNames[event.keyCode]\n if (name == null || event.altGraphKey) { return false }\n return addModifierNames(name, event, noShift)\n}\n\nfunction getKeyMap(val) {\n return typeof val == \"string\" ? keyMap[val] : val\n}\n\n// Helper for deleting text near the selection(s), used to implement\n// backspace, delete, and similar functionality.\nfunction deleteNearSelection(cm, compute) {\n var ranges = cm.doc.sel.ranges, kill = []\n // Build up a set of ranges to kill first, merging overlapping\n // ranges.\n for (var i = 0; i < ranges.length; i++) {\n var toKill = compute(ranges[i])\n while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {\n var replaced = kill.pop()\n if (cmp(replaced.from, toKill.from) < 0) {\n toKill.from = replaced.from\n break\n }\n }\n kill.push(toKill)\n }\n // Next, remove those actual ranges.\n runInOp(cm, function () {\n for (var i = kill.length - 1; i >= 0; i--)\n { replaceRange(cm.doc, \"\", kill[i].from, kill[i].to, \"+delete\") }\n ensureCursorVisible(cm)\n })\n}\n\n// Commands are parameter-less actions that can be performed on an\n// editor, mostly used for keybindings.\nvar commands = {\n selectAll: selectAll,\n singleSelection: function (cm) { return cm.setSelection(cm.getCursor(\"anchor\"), cm.getCursor(\"head\"), sel_dontScroll); },\n killLine: function (cm) { return deleteNearSelection(cm, function (range) {\n if (range.empty()) {\n var len = getLine(cm.doc, range.head.line).text.length\n if (range.head.ch == len && range.head.line < cm.lastLine())\n { return {from: range.head, to: Pos(range.head.line + 1, 0)} }\n else\n { return {from: range.head, to: Pos(range.head.line, len)} }\n } else {\n return {from: range.from(), to: range.to()}\n }\n }); },\n deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({\n from: Pos(range.from().line, 0),\n to: clipPos(cm.doc, Pos(range.to().line + 1, 0))\n }); }); },\n delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({\n from: Pos(range.from().line, 0), to: range.from()\n }); }); },\n delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) {\n var top = cm.charCoords(range.head, \"div\").top + 5\n var leftPos = cm.coordsChar({left: 0, top: top}, \"div\")\n return {from: leftPos, to: range.from()}\n }); },\n delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) {\n var top = cm.charCoords(range.head, \"div\").top + 5\n var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, \"div\")\n return {from: range.from(), to: rightPos }\n }); },\n undo: function (cm) { return cm.undo(); },\n redo: function (cm) { return cm.redo(); },\n undoSelection: function (cm) { return cm.undoSelection(); },\n redoSelection: function (cm) { return cm.redoSelection(); },\n goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); },\n goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); },\n goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); },\n {origin: \"+move\", bias: 1}\n ); },\n goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); },\n {origin: \"+move\", bias: 1}\n ); },\n goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); },\n {origin: \"+move\", bias: -1}\n ); },\n goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) {\n var top = cm.cursorCoords(range.head, \"div\").top + 5\n return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, \"div\")\n }, sel_move); },\n goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) {\n var top = cm.cursorCoords(range.head, \"div\").top + 5\n return cm.coordsChar({left: 0, top: top}, \"div\")\n }, sel_move); },\n goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) {\n var top = cm.cursorCoords(range.head, \"div\").top + 5\n var pos = cm.coordsChar({left: 0, top: top}, \"div\")\n if (pos.ch < cm.getLine(pos.line).search(/\\S/)) { return lineStartSmart(cm, range.head) }\n return pos\n }, sel_move); },\n goLineUp: function (cm) { return cm.moveV(-1, \"line\"); },\n goLineDown: function (cm) { return cm.moveV(1, \"line\"); },\n goPageUp: function (cm) { return cm.moveV(-1, \"page\"); },\n goPageDown: function (cm) { return cm.moveV(1, \"page\"); },\n goCharLeft: function (cm) { return cm.moveH(-1, \"char\"); },\n goCharRight: function (cm) { return cm.moveH(1, \"char\"); },\n goColumnLeft: function (cm) { return cm.moveH(-1, \"column\"); },\n goColumnRight: function (cm) { return cm.moveH(1, \"column\"); },\n goWordLeft: function (cm) { return cm.moveH(-1, \"word\"); },\n goGroupRight: function (cm) { return cm.moveH(1, \"group\"); },\n goGroupLeft: function (cm) { return cm.moveH(-1, \"group\"); },\n goWordRight: function (cm) { return cm.moveH(1, \"word\"); },\n delCharBefore: function (cm) { return cm.deleteH(-1, \"char\"); },\n delCharAfter: function (cm) { return cm.deleteH(1, \"char\"); },\n delWordBefore: function (cm) { return cm.deleteH(-1, \"word\"); },\n delWordAfter: function (cm) { return cm.deleteH(1, \"word\"); },\n delGroupBefore: function (cm) { return cm.deleteH(-1, \"group\"); },\n delGroupAfter: function (cm) { return cm.deleteH(1, \"group\"); },\n indentAuto: function (cm) { return cm.indentSelection(\"smart\"); },\n indentMore: function (cm) { return cm.indentSelection(\"add\"); },\n indentLess: function (cm) { return cm.indentSelection(\"subtract\"); },\n insertTab: function (cm) { return cm.replaceSelection(\"\\t\"); },\n insertSoftTab: function (cm) {\n var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize\n for (var i = 0; i < ranges.length; i++) {\n var pos = ranges[i].from()\n var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize)\n spaces.push(spaceStr(tabSize - col % tabSize))\n }\n cm.replaceSelections(spaces)\n },\n defaultTab: function (cm) {\n if (cm.somethingSelected()) { cm.indentSelection(\"add\") }\n else { cm.execCommand(\"insertTab\") }\n },\n // Swap the two chars left and right of each selection's head.\n // Move cursor behind the two swapped characters afterwards.\n //\n // Doesn't consider line feeds a character.\n // Doesn't scan more than one line above to find a character.\n // Doesn't do anything on an empty line.\n // Doesn't do anything with non-empty selections.\n transposeChars: function (cm) { return runInOp(cm, function () {\n var ranges = cm.listSelections(), newSel = []\n for (var i = 0; i < ranges.length; i++) {\n if (!ranges[i].empty()) { continue }\n var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text\n if (line) {\n if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1) }\n if (cur.ch > 0) {\n cur = new Pos(cur.line, cur.ch + 1)\n cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),\n Pos(cur.line, cur.ch - 2), cur, \"+transpose\")\n } else if (cur.line > cm.doc.first) {\n var prev = getLine(cm.doc, cur.line - 1).text\n if (prev) {\n cur = new Pos(cur.line, 1)\n cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +\n prev.charAt(prev.length - 1),\n Pos(cur.line - 1, prev.length - 1), cur, \"+transpose\")\n }\n }\n }\n newSel.push(new Range(cur, cur))\n }\n cm.setSelections(newSel)\n }); },\n newlineAndIndent: function (cm) { return runInOp(cm, function () {\n var sels = cm.listSelections()\n for (var i = sels.length - 1; i >= 0; i--)\n { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, \"+input\") }\n sels = cm.listSelections()\n for (var i$1 = 0; i$1 < sels.length; i$1++)\n { cm.indentLine(sels[i$1].from().line, null, true) }\n ensureCursorVisible(cm)\n }); },\n openLine: function (cm) { return cm.replaceSelection(\"\\n\", \"start\"); },\n toggleOverwrite: function (cm) { return cm.toggleOverwrite(); }\n}\n\n\nfunction lineStart(cm, lineN) {\n var line = getLine(cm.doc, lineN)\n var visual = visualLine(line)\n if (visual != line) { lineN = lineNo(visual) }\n return endOfLine(true, cm, visual, lineN, 1)\n}\nfunction lineEnd(cm, lineN) {\n var line = getLine(cm.doc, lineN)\n var visual = visualLineEnd(line)\n if (visual != line) { lineN = lineNo(visual) }\n return endOfLine(true, cm, line, lineN, -1)\n}\nfunction lineStartSmart(cm, pos) {\n var start = lineStart(cm, pos.line)\n var line = getLine(cm.doc, start.line)\n var order = getOrder(line, cm.doc.direction)\n if (!order || order[0].level == 0) {\n var firstNonWS = Math.max(0, line.text.search(/\\S/))\n var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch\n return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky)\n }\n return start\n}\n\n// Run a handler that was bound to a key.\nfunction doHandleBinding(cm, bound, dropShift) {\n if (typeof bound == \"string\") {\n bound = commands[bound]\n if (!bound) { return false }\n }\n // Ensure previous input has been read, so that the handler sees a\n // consistent view of the document\n cm.display.input.ensurePolled()\n var prevShift = cm.display.shift, done = false\n try {\n if (cm.isReadOnly()) { cm.state.suppressEdits = true }\n if (dropShift) { cm.display.shift = false }\n done = bound(cm) != Pass\n } finally {\n cm.display.shift = prevShift\n cm.state.suppressEdits = false\n }\n return done\n}\n\nfunction lookupKeyForEditor(cm, name, handle) {\n for (var i = 0; i < cm.state.keyMaps.length; i++) {\n var result = lookupKey(name, cm.state.keyMaps[i], handle, cm)\n if (result) { return result }\n }\n return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))\n || lookupKey(name, cm.options.keyMap, handle, cm)\n}\n\n// Note that, despite the name, this function is also used to check\n// for bound mouse clicks.\n\nvar stopSeq = new Delayed\nfunction dispatchKey(cm, name, e, handle) {\n var seq = cm.state.keySeq\n if (seq) {\n if (isModifierKey(name)) { return \"handled\" }\n stopSeq.set(50, function () {\n if (cm.state.keySeq == seq) {\n cm.state.keySeq = null\n cm.display.input.reset()\n }\n })\n name = seq + \" \" + name\n }\n var result = lookupKeyForEditor(cm, name, handle)\n\n if (result == \"multi\")\n { cm.state.keySeq = name }\n if (result == \"handled\")\n { signalLater(cm, \"keyHandled\", cm, name, e) }\n\n if (result == \"handled\" || result == \"multi\") {\n e_preventDefault(e)\n restartBlink(cm)\n }\n\n if (seq && !result && /\\'$/.test(name)) {\n e_preventDefault(e)\n return true\n }\n return !!result\n}\n\n// Handle a key from the keydown event.\nfunction handleKeyBinding(cm, e) {\n var name = keyName(e, true)\n if (!name) { return false }\n\n if (e.shiftKey && !cm.state.keySeq) {\n // First try to resolve full name (including 'Shift-'). Failing\n // that, see if there is a cursor-motion command (starting with\n // 'go') bound to the keyname without 'Shift-'.\n return dispatchKey(cm, \"Shift-\" + name, e, function (b) { return doHandleBinding(cm, b, true); })\n || dispatchKey(cm, name, e, function (b) {\n if (typeof b == \"string\" ? /^go[A-Z]/.test(b) : b.motion)\n { return doHandleBinding(cm, b) }\n })\n } else {\n return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); })\n }\n}\n\n// Handle a key from the keypress event\nfunction handleCharBinding(cm, e, ch) {\n return dispatchKey(cm, \"'\" + ch + \"'\", e, function (b) { return doHandleBinding(cm, b, true); })\n}\n\nvar lastStoppedKey = null\nfunction onKeyDown(e) {\n var cm = this\n cm.curOp.focus = activeElt()\n if (signalDOMEvent(cm, e)) { return }\n // IE does strange things with escape.\n if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false }\n var code = e.keyCode\n cm.display.shift = code == 16 || e.shiftKey\n var handled = handleKeyBinding(cm, e)\n if (presto) {\n lastStoppedKey = handled ? code : null\n // Opera has no cut event... we try to at least catch the key combo\n if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))\n { cm.replaceSelection(\"\", null, \"cut\") }\n }\n\n // Turn mouse into crosshair when Alt is held on Mac.\n if (code == 18 && !/\\bCodeMirror-crosshair\\b/.test(cm.display.lineDiv.className))\n { showCrossHair(cm) }\n}\n\nfunction showCrossHair(cm) {\n var lineDiv = cm.display.lineDiv\n addClass(lineDiv, \"CodeMirror-crosshair\")\n\n function up(e) {\n if (e.keyCode == 18 || !e.altKey) {\n rmClass(lineDiv, \"CodeMirror-crosshair\")\n off(document, \"keyup\", up)\n off(document, \"mouseover\", up)\n }\n }\n on(document, \"keyup\", up)\n on(document, \"mouseover\", up)\n}\n\nfunction onKeyUp(e) {\n if (e.keyCode == 16) { this.doc.sel.shift = false }\n signalDOMEvent(this, e)\n}\n\nfunction onKeyPress(e) {\n var cm = this\n if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return }\n var keyCode = e.keyCode, charCode = e.charCode\n if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return}\n if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return }\n var ch = String.fromCharCode(charCode == null ? keyCode : charCode)\n // Some browsers fire keypress events for backspace\n if (ch == \"\\x08\") { return }\n if (handleCharBinding(cm, e, ch)) { return }\n cm.display.input.onKeyPress(e)\n}\n\nvar DOUBLECLICK_DELAY = 400\n\nvar PastClick = function(time, pos, button) {\n this.time = time\n this.pos = pos\n this.button = button\n};\n\nPastClick.prototype.compare = function (time, pos, button) {\n return this.time + DOUBLECLICK_DELAY > time &&\n cmp(pos, this.pos) == 0 && button == this.button\n};\n\nvar lastClick;\nvar lastDoubleClick;\nfunction clickRepeat(pos, button) {\n var now = +new Date\n if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) {\n lastClick = lastDoubleClick = null\n return \"triple\"\n } else if (lastClick && lastClick.compare(now, pos, button)) {\n lastDoubleClick = new PastClick(now, pos, button)\n lastClick = null\n return \"double\"\n } else {\n lastClick = new PastClick(now, pos, button)\n lastDoubleClick = null\n return \"single\"\n }\n}\n\n// A mouse down can be a single click, double click, triple click,\n// start of selection drag, start of text drag, new cursor\n// (ctrl-click), rectangle drag (alt-drag), or xwin\n// middle-click-paste. Or it might be a click on something we should\n// not interfere with, such as a scrollbar or widget.\nfunction onMouseDown(e) {\n var cm = this, display = cm.display\n if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return }\n display.input.ensurePolled()\n display.shift = e.shiftKey\n\n if (eventInWidget(display, e)) {\n if (!webkit) {\n // Briefly turn off draggability, to allow widgets to do\n // normal dragging things.\n display.scroller.draggable = false\n setTimeout(function () { return display.scroller.draggable = true; }, 100)\n }\n return\n }\n if (clickInGutter(cm, e)) { return }\n var pos = posFromMouse(cm, e), button = e_button(e), repeat = pos ? clickRepeat(pos, button) : \"single\"\n window.focus()\n\n // #3261: make sure, that we're not starting a second selection\n if (button == 1 && cm.state.selectingText)\n { cm.state.selectingText(e) }\n\n if (pos && handleMappedButton(cm, button, pos, repeat, e)) { return }\n\n if (button == 1) {\n if (pos) { leftButtonDown(cm, pos, repeat, e) }\n else if (e_target(e) == display.scroller) { e_preventDefault(e) }\n } else if (button == 2) {\n if (pos) { extendSelection(cm.doc, pos) }\n setTimeout(function () { return display.input.focus(); }, 20)\n } else if (button == 3) {\n if (captureRightClick) { onContextMenu(cm, e) }\n else { delayBlurEvent(cm) }\n }\n}\n\nfunction handleMappedButton(cm, button, pos, repeat, event) {\n var name = \"Click\"\n if (repeat == \"double\") { name = \"Double\" + name }\n else if (repeat == \"triple\") { name = \"Triple\" + name }\n name = (button == 1 ? \"Left\" : button == 2 ? \"Middle\" : \"Right\") + name\n\n return dispatchKey(cm, addModifierNames(name, event), event, function (bound) {\n if (typeof bound == \"string\") { bound = commands[bound] }\n if (!bound) { return false }\n var done = false\n try {\n if (cm.isReadOnly()) { cm.state.suppressEdits = true }\n done = bound(cm, pos) != Pass\n } finally {\n cm.state.suppressEdits = false\n }\n return done\n })\n}\n\nfunction configureMouse(cm, repeat, event) {\n var option = cm.getOption(\"configureMouse\")\n var value = option ? option(cm, repeat, event) : {}\n if (value.unit == null) {\n var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey\n value.unit = rect ? \"rectangle\" : repeat == \"single\" ? \"char\" : repeat == \"double\" ? \"word\" : \"line\"\n }\n if (value.extend == null || cm.doc.extend) { value.extend = cm.doc.extend || event.shiftKey }\n if (value.addNew == null) { value.addNew = mac ? event.metaKey : event.ctrlKey }\n if (value.moveOnDrag == null) { value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey) }\n return value\n}\n\nfunction leftButtonDown(cm, pos, repeat, event) {\n if (ie) { setTimeout(bind(ensureFocus, cm), 0) }\n else { cm.curOp.focus = activeElt() }\n\n var behavior = configureMouse(cm, repeat, event)\n\n var sel = cm.doc.sel, contained\n if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&\n repeat == \"single\" && (contained = sel.contains(pos)) > -1 &&\n (cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) &&\n (cmp(contained.to(), pos) > 0 || pos.xRel < 0))\n { leftButtonStartDrag(cm, event, pos, behavior) }\n else\n { leftButtonSelect(cm, event, pos, behavior) }\n}\n\n// Start a text drag. When it ends, see if any dragging actually\n// happen, and treat as a click if it didn't.\nfunction leftButtonStartDrag(cm, event, pos, behavior) {\n var display = cm.display, moved = false\n var dragEnd = operation(cm, function (e) {\n if (webkit) { display.scroller.draggable = false }\n cm.state.draggingText = false\n off(document, \"mouseup\", dragEnd)\n off(document, \"mousemove\", mouseMove)\n off(display.scroller, \"dragstart\", dragStart)\n off(display.scroller, \"drop\", dragEnd)\n if (!moved) {\n e_preventDefault(e)\n if (!behavior.addNew)\n { extendSelection(cm.doc, pos, null, null, behavior.extend) }\n // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)\n if (webkit || ie && ie_version == 9)\n { setTimeout(function () {document.body.focus(); display.input.focus()}, 20) }\n else\n { display.input.focus() }\n }\n })\n var mouseMove = function(e2) {\n moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10\n }\n var dragStart = function () { return moved = true; }\n // Let the drag handler handle this.\n if (webkit) { display.scroller.draggable = true }\n cm.state.draggingText = dragEnd\n dragEnd.copy = !behavior.moveOnDrag\n // IE's approach to draggable\n if (display.scroller.dragDrop) { display.scroller.dragDrop() }\n on(document, \"mouseup\", dragEnd)\n on(document, \"mousemove\", mouseMove)\n on(display.scroller, \"dragstart\", dragStart)\n on(display.scroller, \"drop\", dragEnd)\n\n delayBlurEvent(cm)\n setTimeout(function () { return display.input.focus(); }, 20)\n}\n\nfunction rangeForUnit(cm, pos, unit) {\n if (unit == \"char\") { return new Range(pos, pos) }\n if (unit == \"word\") { return cm.findWordAt(pos) }\n if (unit == \"line\") { return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) }\n var result = unit(cm, pos)\n return new Range(result.from, result.to)\n}\n\n// Normal selection, as opposed to text dragging.\nfunction leftButtonSelect(cm, event, start, behavior) {\n var display = cm.display, doc = cm.doc\n e_preventDefault(event)\n\n var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges\n if (behavior.addNew && !behavior.extend) {\n ourIndex = doc.sel.contains(start)\n if (ourIndex > -1)\n { ourRange = ranges[ourIndex] }\n else\n { ourRange = new Range(start, start) }\n } else {\n ourRange = doc.sel.primary()\n ourIndex = doc.sel.primIndex\n }\n\n if (behavior.unit == \"rectangle\") {\n if (!behavior.addNew) { ourRange = new Range(start, start) }\n start = posFromMouse(cm, event, true, true)\n ourIndex = -1\n } else {\n var range = rangeForUnit(cm, start, behavior.unit)\n if (behavior.extend)\n { ourRange = extendRange(ourRange, range.anchor, range.head, behavior.extend) }\n else\n { ourRange = range }\n }\n\n if (!behavior.addNew) {\n ourIndex = 0\n setSelection(doc, new Selection([ourRange], 0), sel_mouse)\n startSel = doc.sel\n } else if (ourIndex == -1) {\n ourIndex = ranges.length\n setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex),\n {scroll: false, origin: \"*mouse\"})\n } else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == \"char\" && !behavior.extend) {\n setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),\n {scroll: false, origin: \"*mouse\"})\n startSel = doc.sel\n } else {\n replaceOneSelection(doc, ourIndex, ourRange, sel_mouse)\n }\n\n var lastPos = start\n function extendTo(pos) {\n if (cmp(lastPos, pos) == 0) { return }\n lastPos = pos\n\n if (behavior.unit == \"rectangle\") {\n var ranges = [], tabSize = cm.options.tabSize\n var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize)\n var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize)\n var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol)\n for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));\n line <= end; line++) {\n var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize)\n if (left == right)\n { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))) }\n else if (text.length > leftPos)\n { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))) }\n }\n if (!ranges.length) { ranges.push(new Range(start, start)) }\n setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),\n {origin: \"*mouse\", scroll: false})\n cm.scrollIntoView(pos)\n } else {\n var oldRange = ourRange\n var range = rangeForUnit(cm, pos, behavior.unit)\n var anchor = oldRange.anchor, head\n if (cmp(range.anchor, anchor) > 0) {\n head = range.head\n anchor = minPos(oldRange.from(), range.anchor)\n } else {\n head = range.anchor\n anchor = maxPos(oldRange.to(), range.head)\n }\n var ranges$1 = startSel.ranges.slice(0)\n ranges$1[ourIndex] = new Range(clipPos(doc, anchor), head)\n setSelection(doc, normalizeSelection(ranges$1, ourIndex), sel_mouse)\n }\n }\n\n var editorSize = display.wrapper.getBoundingClientRect()\n // Used to ensure timeout re-tries don't fire when another extend\n // happened in the meantime (clearTimeout isn't reliable -- at\n // least on Chrome, the timeouts still happen even when cleared,\n // if the clear happens after their scheduled firing time).\n var counter = 0\n\n function extend(e) {\n var curCount = ++counter\n var cur = posFromMouse(cm, e, true, behavior.unit == \"rectangle\")\n if (!cur) { return }\n if (cmp(cur, lastPos) != 0) {\n cm.curOp.focus = activeElt()\n extendTo(cur)\n var visible = visibleLines(display, doc)\n if (cur.line >= visible.to || cur.line < visible.from)\n { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e) }}), 150) }\n } else {\n var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0\n if (outside) { setTimeout(operation(cm, function () {\n if (counter != curCount) { return }\n display.scroller.scrollTop += outside\n extend(e)\n }), 50) }\n }\n }\n\n function done(e) {\n cm.state.selectingText = false\n counter = Infinity\n e_preventDefault(e)\n display.input.focus()\n off(document, \"mousemove\", move)\n off(document, \"mouseup\", up)\n doc.history.lastSelOrigin = null\n }\n\n var move = operation(cm, function (e) {\n if (!e_button(e)) { done(e) }\n else { extend(e) }\n })\n var up = operation(cm, done)\n cm.state.selectingText = up\n on(document, \"mousemove\", move)\n on(document, \"mouseup\", up)\n}\n\n\n// Determines whether an event happened in the gutter, and fires the\n// handlers for the corresponding event.\nfunction gutterEvent(cm, e, type, prevent) {\n var mX, mY\n try { mX = e.clientX; mY = e.clientY }\n catch(e) { return false }\n if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false }\n if (prevent) { e_preventDefault(e) }\n\n var display = cm.display\n var lineBox = display.lineDiv.getBoundingClientRect()\n\n if (mY > lineBox.bottom || !hasHandler(cm, type)) { return e_defaultPrevented(e) }\n mY -= lineBox.top - display.viewOffset\n\n for (var i = 0; i < cm.options.gutters.length; ++i) {\n var g = display.gutters.childNodes[i]\n if (g && g.getBoundingClientRect().right >= mX) {\n var line = lineAtHeight(cm.doc, mY)\n var gutter = cm.options.gutters[i]\n signal(cm, type, cm, line, gutter, e)\n return e_defaultPrevented(e)\n }\n }\n}\n\nfunction clickInGutter(cm, e) {\n return gutterEvent(cm, e, \"gutterClick\", true)\n}\n\n// CONTEXT MENU HANDLING\n\n// To make the context menu work, we need to briefly unhide the\n// textarea (making it as unobtrusive as possible) to let the\n// right-click take effect on it.\nfunction onContextMenu(cm, e) {\n if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) { return }\n if (signalDOMEvent(cm, e, \"contextmenu\")) { return }\n cm.display.input.onContextMenu(e)\n}\n\nfunction contextMenuInGutter(cm, e) {\n if (!hasHandler(cm, \"gutterContextMenu\")) { return false }\n return gutterEvent(cm, e, \"gutterContextMenu\", false)\n}\n\nfunction themeChanged(cm) {\n cm.display.wrapper.className = cm.display.wrapper.className.replace(/\\s*cm-s-\\S+/g, \"\") +\n cm.options.theme.replace(/(^|\\s)\\s*/g, \" cm-s-\")\n clearCaches(cm)\n}\n\nvar Init = {toString: function(){return \"CodeMirror.Init\"}}\n\nvar defaults = {}\nvar optionHandlers = {}\n\nfunction defineOptions(CodeMirror) {\n var optionHandlers = CodeMirror.optionHandlers\n\n function option(name, deflt, handle, notOnInit) {\n CodeMirror.defaults[name] = deflt\n if (handle) { optionHandlers[name] =\n notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old) }} : handle }\n }\n\n CodeMirror.defineOption = option\n\n // Passed to option handlers when there is no old value.\n CodeMirror.Init = Init\n\n // These two are, on init, called from the constructor because they\n // have to be initialized before the editor can start at all.\n option(\"value\", \"\", function (cm, val) { return cm.setValue(val); }, true)\n option(\"mode\", null, function (cm, val) {\n cm.doc.modeOption = val\n loadMode(cm)\n }, true)\n\n option(\"indentUnit\", 2, loadMode, true)\n option(\"indentWithTabs\", false)\n option(\"smartIndent\", true)\n option(\"tabSize\", 4, function (cm) {\n resetModeState(cm)\n clearCaches(cm)\n regChange(cm)\n }, true)\n option(\"lineSeparator\", null, function (cm, val) {\n cm.doc.lineSep = val\n if (!val) { return }\n var newBreaks = [], lineNo = cm.doc.first\n cm.doc.iter(function (line) {\n for (var pos = 0;;) {\n var found = line.text.indexOf(val, pos)\n if (found == -1) { break }\n pos = found + val.length\n newBreaks.push(Pos(lineNo, found))\n }\n lineNo++\n })\n for (var i = newBreaks.length - 1; i >= 0; i--)\n { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)) }\n })\n option(\"specialChars\", /[\\u0000-\\u001f\\u007f-\\u009f\\u00ad\\u061c\\u200b-\\u200f\\u2028\\u2029\\ufeff]/g, function (cm, val, old) {\n cm.state.specialChars = new RegExp(val.source + (val.test(\"\\t\") ? \"\" : \"|\\t\"), \"g\")\n if (old != Init) { cm.refresh() }\n })\n option(\"specialCharPlaceholder\", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true)\n option(\"electricChars\", true)\n option(\"inputStyle\", mobile ? \"contenteditable\" : \"textarea\", function () {\n throw new Error(\"inputStyle can not (yet) be changed in a running editor\") // FIXME\n }, true)\n option(\"spellcheck\", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true)\n option(\"rtlMoveVisually\", !windows)\n option(\"wholeLineUpdateBefore\", true)\n\n option(\"theme\", \"default\", function (cm) {\n themeChanged(cm)\n guttersChanged(cm)\n }, true)\n option(\"keyMap\", \"default\", function (cm, val, old) {\n var next = getKeyMap(val)\n var prev = old != Init && getKeyMap(old)\n if (prev && prev.detach) { prev.detach(cm, next) }\n if (next.attach) { next.attach(cm, prev || null) }\n })\n option(\"extraKeys\", null)\n option(\"configureMouse\", null)\n\n option(\"lineWrapping\", false, wrappingChanged, true)\n option(\"gutters\", [], function (cm) {\n setGuttersForLineNumbers(cm.options)\n guttersChanged(cm)\n }, true)\n option(\"fixedGutter\", true, function (cm, val) {\n cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + \"px\" : \"0\"\n cm.refresh()\n }, true)\n option(\"coverGutterNextToScrollbar\", false, function (cm) { return updateScrollbars(cm); }, true)\n option(\"scrollbarStyle\", \"native\", function (cm) {\n initScrollbars(cm)\n updateScrollbars(cm)\n cm.display.scrollbars.setScrollTop(cm.doc.scrollTop)\n cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft)\n }, true)\n option(\"lineNumbers\", false, function (cm) {\n setGuttersForLineNumbers(cm.options)\n guttersChanged(cm)\n }, true)\n option(\"firstLineNumber\", 1, guttersChanged, true)\n option(\"lineNumberFormatter\", function (integer) { return integer; }, guttersChanged, true)\n option(\"showCursorWhenSelecting\", false, updateSelection, true)\n\n option(\"resetSelectionOnContextMenu\", true)\n option(\"lineWiseCopyCut\", true)\n option(\"pasteLinesPerSelection\", true)\n\n option(\"readOnly\", false, function (cm, val) {\n if (val == \"nocursor\") {\n onBlur(cm)\n cm.display.input.blur()\n }\n cm.display.input.readOnlyChanged(val)\n })\n option(\"disableInput\", false, function (cm, val) {if (!val) { cm.display.input.reset() }}, true)\n option(\"dragDrop\", true, dragDropChanged)\n option(\"allowDropFileTypes\", null)\n\n option(\"cursorBlinkRate\", 530)\n option(\"cursorScrollMargin\", 0)\n option(\"cursorHeight\", 1, updateSelection, true)\n option(\"singleCursorHeightPerLine\", true, updateSelection, true)\n option(\"workTime\", 100)\n option(\"workDelay\", 100)\n option(\"flattenSpans\", true, resetModeState, true)\n option(\"addModeClass\", false, resetModeState, true)\n option(\"pollInterval\", 100)\n option(\"undoDepth\", 200, function (cm, val) { return cm.doc.history.undoDepth = val; })\n option(\"historyEventDelay\", 1250)\n option(\"viewportMargin\", 10, function (cm) { return cm.refresh(); }, true)\n option(\"maxHighlightLength\", 10000, resetModeState, true)\n option(\"moveInputWithCursor\", true, function (cm, val) {\n if (!val) { cm.display.input.resetPosition() }\n })\n\n option(\"tabindex\", null, function (cm, val) { return cm.display.input.getField().tabIndex = val || \"\"; })\n option(\"autofocus\", null)\n option(\"direction\", \"ltr\", function (cm, val) { return cm.doc.setDirection(val); }, true)\n}\n\nfunction guttersChanged(cm) {\n updateGutters(cm)\n regChange(cm)\n alignHorizontally(cm)\n}\n\nfunction dragDropChanged(cm, value, old) {\n var wasOn = old && old != Init\n if (!value != !wasOn) {\n var funcs = cm.display.dragFunctions\n var toggle = value ? on : off\n toggle(cm.display.scroller, \"dragstart\", funcs.start)\n toggle(cm.display.scroller, \"dragenter\", funcs.enter)\n toggle(cm.display.scroller, \"dragover\", funcs.over)\n toggle(cm.display.scroller, \"dragleave\", funcs.leave)\n toggle(cm.display.scroller, \"drop\", funcs.drop)\n }\n}\n\nfunction wrappingChanged(cm) {\n if (cm.options.lineWrapping) {\n addClass(cm.display.wrapper, \"CodeMirror-wrap\")\n cm.display.sizer.style.minWidth = \"\"\n cm.display.sizerWidth = null\n } else {\n rmClass(cm.display.wrapper, \"CodeMirror-wrap\")\n findMaxLine(cm)\n }\n estimateLineHeights(cm)\n regChange(cm)\n clearCaches(cm)\n setTimeout(function () { return updateScrollbars(cm); }, 100)\n}\n\n// A CodeMirror instance represents an editor. This is the object\n// that user code is usually dealing with.\n\nfunction CodeMirror(place, options) {\n var this$1 = this;\n\n if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) }\n\n this.options = options = options ? copyObj(options) : {}\n // Determine effective options based on given values and defaults.\n copyObj(defaults, options, false)\n setGuttersForLineNumbers(options)\n\n var doc = options.value\n if (typeof doc == \"string\") { doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction) }\n this.doc = doc\n\n var input = new CodeMirror.inputStyles[options.inputStyle](this)\n var display = this.display = new Display(place, doc, input)\n display.wrapper.CodeMirror = this\n updateGutters(this)\n themeChanged(this)\n if (options.lineWrapping)\n { this.display.wrapper.className += \" CodeMirror-wrap\" }\n initScrollbars(this)\n\n this.state = {\n keyMaps: [], // stores maps added by addKeyMap\n overlays: [], // highlighting overlays, as added by addOverlay\n modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info\n overwrite: false,\n delayingBlurEvent: false,\n focused: false,\n suppressEdits: false, // used to disable editing during key handlers when in readOnly mode\n pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll\n selectingText: false,\n draggingText: false,\n highlight: new Delayed(), // stores highlight worker timeout\n keySeq: null, // Unfinished key sequence\n specialChars: null\n }\n\n if (options.autofocus && !mobile) { display.input.focus() }\n\n // Override magic textarea content restore that IE sometimes does\n // on our hidden textarea on reload\n if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20) }\n\n registerEventHandlers(this)\n ensureGlobalHandlers()\n\n startOperation(this)\n this.curOp.forceUpdate = true\n attachDoc(this, doc)\n\n if ((options.autofocus && !mobile) || this.hasFocus())\n { setTimeout(bind(onFocus, this), 20) }\n else\n { onBlur(this) }\n\n for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt))\n { optionHandlers[opt](this$1, options[opt], Init) } }\n maybeUpdateLineNumberWidth(this)\n if (options.finishInit) { options.finishInit(this) }\n for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this$1) }\n endOperation(this)\n // Suppress optimizelegibility in Webkit, since it breaks text\n // measuring on line wrapping boundaries.\n if (webkit && options.lineWrapping &&\n getComputedStyle(display.lineDiv).textRendering == \"optimizelegibility\")\n { display.lineDiv.style.textRendering = \"auto\" }\n}\n\n// The default configuration options.\nCodeMirror.defaults = defaults\n// Functions to run when options are changed.\nCodeMirror.optionHandlers = optionHandlers\n\n// Attach the necessary event handlers when initializing the editor\nfunction registerEventHandlers(cm) {\n var d = cm.display\n on(d.scroller, \"mousedown\", operation(cm, onMouseDown))\n // Older IE's will not fire a second mousedown for a double click\n if (ie && ie_version < 11)\n { on(d.scroller, \"dblclick\", operation(cm, function (e) {\n if (signalDOMEvent(cm, e)) { return }\n var pos = posFromMouse(cm, e)\n if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) { return }\n e_preventDefault(e)\n var word = cm.findWordAt(pos)\n extendSelection(cm.doc, word.anchor, word.head)\n })) }\n else\n { on(d.scroller, \"dblclick\", function (e) { return signalDOMEvent(cm, e) || e_preventDefault(e); }) }\n // Some browsers fire contextmenu *after* opening the menu, at\n // which point we can't mess with it anymore. Context menu is\n // handled in onMouseDown for these browsers.\n if (!captureRightClick) { on(d.scroller, \"contextmenu\", function (e) { return onContextMenu(cm, e); }) }\n\n // Used to suppress mouse event handling when a touch happens\n var touchFinished, prevTouch = {end: 0}\n function finishTouch() {\n if (d.activeTouch) {\n touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000)\n prevTouch = d.activeTouch\n prevTouch.end = +new Date\n }\n }\n function isMouseLikeTouchEvent(e) {\n if (e.touches.length != 1) { return false }\n var touch = e.touches[0]\n return touch.radiusX <= 1 && touch.radiusY <= 1\n }\n function farAway(touch, other) {\n if (other.left == null) { return true }\n var dx = other.left - touch.left, dy = other.top - touch.top\n return dx * dx + dy * dy > 20 * 20\n }\n on(d.scroller, \"touchstart\", function (e) {\n if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e)) {\n d.input.ensurePolled()\n clearTimeout(touchFinished)\n var now = +new Date\n d.activeTouch = {start: now, moved: false,\n prev: now - prevTouch.end <= 300 ? prevTouch : null}\n if (e.touches.length == 1) {\n d.activeTouch.left = e.touches[0].pageX\n d.activeTouch.top = e.touches[0].pageY\n }\n }\n })\n on(d.scroller, \"touchmove\", function () {\n if (d.activeTouch) { d.activeTouch.moved = true }\n })\n on(d.scroller, \"touchend\", function (e) {\n var touch = d.activeTouch\n if (touch && !eventInWidget(d, e) && touch.left != null &&\n !touch.moved && new Date - touch.start < 300) {\n var pos = cm.coordsChar(d.activeTouch, \"page\"), range\n if (!touch.prev || farAway(touch, touch.prev)) // Single tap\n { range = new Range(pos, pos) }\n else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap\n { range = cm.findWordAt(pos) }\n else // Triple tap\n { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) }\n cm.setSelection(range.anchor, range.head)\n cm.focus()\n e_preventDefault(e)\n }\n finishTouch()\n })\n on(d.scroller, \"touchcancel\", finishTouch)\n\n // Sync scrolling between fake scrollbars and real scrollable\n // area, ensure viewport is updated when scrolling.\n on(d.scroller, \"scroll\", function () {\n if (d.scroller.clientHeight) {\n updateScrollTop(cm, d.scroller.scrollTop)\n setScrollLeft(cm, d.scroller.scrollLeft, true)\n signal(cm, \"scroll\", cm)\n }\n })\n\n // Listen to wheel events in order to try and update the viewport on time.\n on(d.scroller, \"mousewheel\", function (e) { return onScrollWheel(cm, e); })\n on(d.scroller, \"DOMMouseScroll\", function (e) { return onScrollWheel(cm, e); })\n\n // Prevent wrapper from ever scrolling\n on(d.wrapper, \"scroll\", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; })\n\n d.dragFunctions = {\n enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e) }},\n over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e) }},\n start: function (e) { return onDragStart(cm, e); },\n drop: operation(cm, onDrop),\n leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm) }}\n }\n\n var inp = d.input.getField()\n on(inp, \"keyup\", function (e) { return onKeyUp.call(cm, e); })\n on(inp, \"keydown\", operation(cm, onKeyDown))\n on(inp, \"keypress\", operation(cm, onKeyPress))\n on(inp, \"focus\", function (e) { return onFocus(cm, e); })\n on(inp, \"blur\", function (e) { return onBlur(cm, e); })\n}\n\nvar initHooks = []\nCodeMirror.defineInitHook = function (f) { return initHooks.push(f); }\n\n// Indent the given line. The how parameter can be \"smart\",\n// \"add\"/null, \"subtract\", or \"prev\". When aggressive is false\n// (typically set to true for forced single-line indents), empty\n// lines are not indented, and places where the mode returns Pass\n// are left alone.\nfunction indentLine(cm, n, how, aggressive) {\n var doc = cm.doc, state\n if (how == null) { how = \"add\" }\n if (how == \"smart\") {\n // Fall back to \"prev\" when the mode doesn't have an indentation\n // method.\n if (!doc.mode.indent) { how = \"prev\" }\n else { state = getContextBefore(cm, n).state }\n }\n\n var tabSize = cm.options.tabSize\n var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize)\n if (line.stateAfter) { line.stateAfter = null }\n var curSpaceString = line.text.match(/^\\s*/)[0], indentation\n if (!aggressive && !/\\S/.test(line.text)) {\n indentation = 0\n how = \"not\"\n } else if (how == \"smart\") {\n indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text)\n if (indentation == Pass || indentation > 150) {\n if (!aggressive) { return }\n how = \"prev\"\n }\n }\n if (how == \"prev\") {\n if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize) }\n else { indentation = 0 }\n } else if (how == \"add\") {\n indentation = curSpace + cm.options.indentUnit\n } else if (how == \"subtract\") {\n indentation = curSpace - cm.options.indentUnit\n } else if (typeof how == \"number\") {\n indentation = curSpace + how\n }\n indentation = Math.max(0, indentation)\n\n var indentString = \"\", pos = 0\n if (cm.options.indentWithTabs)\n { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += \"\\t\"} }\n if (pos < indentation) { indentString += spaceStr(indentation - pos) }\n\n if (indentString != curSpaceString) {\n replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), \"+input\")\n line.stateAfter = null\n return true\n } else {\n // Ensure that, if the cursor was in the whitespace at the start\n // of the line, it is moved to the end of that space.\n for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) {\n var range = doc.sel.ranges[i$1]\n if (range.head.line == n && range.head.ch < curSpaceString.length) {\n var pos$1 = Pos(n, curSpaceString.length)\n replaceOneSelection(doc, i$1, new Range(pos$1, pos$1))\n break\n }\n }\n }\n}\n\n// This will be set to a {lineWise: bool, text: [string]} object, so\n// that, when pasting, we know what kind of selections the copied\n// text was made out of.\nvar lastCopied = null\n\nfunction setLastCopied(newLastCopied) {\n lastCopied = newLastCopied\n}\n\nfunction applyTextInput(cm, inserted, deleted, sel, origin) {\n var doc = cm.doc\n cm.display.shift = false\n if (!sel) { sel = doc.sel }\n\n var paste = cm.state.pasteIncoming || origin == \"paste\"\n var textLines = splitLinesAuto(inserted), multiPaste = null\n // When pasing N lines into N selections, insert one line per selection\n if (paste && sel.ranges.length > 1) {\n if (lastCopied && lastCopied.text.join(\"\\n\") == inserted) {\n if (sel.ranges.length % lastCopied.text.length == 0) {\n multiPaste = []\n for (var i = 0; i < lastCopied.text.length; i++)\n { multiPaste.push(doc.splitLines(lastCopied.text[i])) }\n }\n } else if (textLines.length == sel.ranges.length && cm.options.pasteLinesPerSelection) {\n multiPaste = map(textLines, function (l) { return [l]; })\n }\n }\n\n var updateInput\n // Normal behavior is to insert the new text into every selection\n for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) {\n var range = sel.ranges[i$1]\n var from = range.from(), to = range.to()\n if (range.empty()) {\n if (deleted && deleted > 0) // Handle deletion\n { from = Pos(from.line, from.ch - deleted) }\n else if (cm.state.overwrite && !paste) // Handle overwrite\n { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)) }\n else if (lastCopied && lastCopied.lineWise && lastCopied.text.join(\"\\n\") == inserted)\n { from = to = Pos(from.line, 0) }\n }\n updateInput = cm.curOp.updateInput\n var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines,\n origin: origin || (paste ? \"paste\" : cm.state.cutIncoming ? \"cut\" : \"+input\")}\n makeChange(cm.doc, changeEvent)\n signalLater(cm, \"inputRead\", cm, changeEvent)\n }\n if (inserted && !paste)\n { triggerElectric(cm, inserted) }\n\n ensureCursorVisible(cm)\n cm.curOp.updateInput = updateInput\n cm.curOp.typing = true\n cm.state.pasteIncoming = cm.state.cutIncoming = false\n}\n\nfunction handlePaste(e, cm) {\n var pasted = e.clipboardData && e.clipboardData.getData(\"Text\")\n if (pasted) {\n e.preventDefault()\n if (!cm.isReadOnly() && !cm.options.disableInput)\n { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, \"paste\"); }) }\n return true\n }\n}\n\nfunction triggerElectric(cm, inserted) {\n // When an 'electric' character is inserted, immediately trigger a reindent\n if (!cm.options.electricChars || !cm.options.smartIndent) { return }\n var sel = cm.doc.sel\n\n for (var i = sel.ranges.length - 1; i >= 0; i--) {\n var range = sel.ranges[i]\n if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) { continue }\n var mode = cm.getModeAt(range.head)\n var indented = false\n if (mode.electricChars) {\n for (var j = 0; j < mode.electricChars.length; j++)\n { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {\n indented = indentLine(cm, range.head.line, \"smart\")\n break\n } }\n } else if (mode.electricInput) {\n if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))\n { indented = indentLine(cm, range.head.line, \"smart\") }\n }\n if (indented) { signalLater(cm, \"electricInput\", cm, range.head.line) }\n }\n}\n\nfunction copyableRanges(cm) {\n var text = [], ranges = []\n for (var i = 0; i < cm.doc.sel.ranges.length; i++) {\n var line = cm.doc.sel.ranges[i].head.line\n var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)}\n ranges.push(lineRange)\n text.push(cm.getRange(lineRange.anchor, lineRange.head))\n }\n return {text: text, ranges: ranges}\n}\n\nfunction disableBrowserMagic(field, spellcheck) {\n field.setAttribute(\"autocorrect\", \"off\")\n field.setAttribute(\"autocapitalize\", \"off\")\n field.setAttribute(\"spellcheck\", !!spellcheck)\n}\n\nfunction hiddenTextarea() {\n var te = elt(\"textarea\", null, null, \"position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; outline: none\")\n var div = elt(\"div\", [te], null, \"overflow: hidden; position: relative; width: 3px; height: 0px;\")\n // The textarea is kept positioned near the cursor to prevent the\n // fact that it'll be scrolled into view on input from scrolling\n // our fake cursor out of view. On webkit, when wrap=off, paste is\n // very slow. So make the area wide instead.\n if (webkit) { te.style.width = \"1000px\" }\n else { te.setAttribute(\"wrap\", \"off\") }\n // If border: 0; -- iOS fails to open keyboard (issue #1287)\n if (ios) { te.style.border = \"1px solid black\" }\n disableBrowserMagic(te)\n return div\n}\n\n// The publicly visible API. Note that methodOp(f) means\n// 'wrap f in an operation, performed on its `this` parameter'.\n\n// This is not the complete set of editor methods. Most of the\n// methods defined on the Doc type are also injected into\n// CodeMirror.prototype, for backwards compatibility and\n// convenience.\n\nfunction addEditorMethods(CodeMirror) {\n var optionHandlers = CodeMirror.optionHandlers\n\n var helpers = CodeMirror.helpers = {}\n\n CodeMirror.prototype = {\n constructor: CodeMirror,\n focus: function(){window.focus(); this.display.input.focus()},\n\n setOption: function(option, value) {\n var options = this.options, old = options[option]\n if (options[option] == value && option != \"mode\") { return }\n options[option] = value\n if (optionHandlers.hasOwnProperty(option))\n { operation(this, optionHandlers[option])(this, value, old) }\n signal(this, \"optionChange\", this, option)\n },\n\n getOption: function(option) {return this.options[option]},\n getDoc: function() {return this.doc},\n\n addKeyMap: function(map, bottom) {\n this.state.keyMaps[bottom ? \"push\" : \"unshift\"](getKeyMap(map))\n },\n removeKeyMap: function(map) {\n var maps = this.state.keyMaps\n for (var i = 0; i < maps.length; ++i)\n { if (maps[i] == map || maps[i].name == map) {\n maps.splice(i, 1)\n return true\n } }\n },\n\n addOverlay: methodOp(function(spec, options) {\n var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec)\n if (mode.startState) { throw new Error(\"Overlays may not be stateful.\") }\n insertSorted(this.state.overlays,\n {mode: mode, modeSpec: spec, opaque: options && options.opaque,\n priority: (options && options.priority) || 0},\n function (overlay) { return overlay.priority; })\n this.state.modeGen++\n regChange(this)\n }),\n removeOverlay: methodOp(function(spec) {\n var this$1 = this;\n\n var overlays = this.state.overlays\n for (var i = 0; i < overlays.length; ++i) {\n var cur = overlays[i].modeSpec\n if (cur == spec || typeof spec == \"string\" && cur.name == spec) {\n overlays.splice(i, 1)\n this$1.state.modeGen++\n regChange(this$1)\n return\n }\n }\n }),\n\n indentLine: methodOp(function(n, dir, aggressive) {\n if (typeof dir != \"string\" && typeof dir != \"number\") {\n if (dir == null) { dir = this.options.smartIndent ? \"smart\" : \"prev\" }\n else { dir = dir ? \"add\" : \"subtract\" }\n }\n if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive) }\n }),\n indentSelection: methodOp(function(how) {\n var this$1 = this;\n\n var ranges = this.doc.sel.ranges, end = -1\n for (var i = 0; i < ranges.length; i++) {\n var range = ranges[i]\n if (!range.empty()) {\n var from = range.from(), to = range.to()\n var start = Math.max(end, from.line)\n end = Math.min(this$1.lastLine(), to.line - (to.ch ? 0 : 1)) + 1\n for (var j = start; j < end; ++j)\n { indentLine(this$1, j, how) }\n var newRanges = this$1.doc.sel.ranges\n if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)\n { replaceOneSelection(this$1.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll) }\n } else if (range.head.line > end) {\n indentLine(this$1, range.head.line, how, true)\n end = range.head.line\n if (i == this$1.doc.sel.primIndex) { ensureCursorVisible(this$1) }\n }\n }\n }),\n\n // Fetch the parser token for a given character. Useful for hacks\n // that want to inspect the mode state (say, for completion).\n getTokenAt: function(pos, precise) {\n return takeToken(this, pos, precise)\n },\n\n getLineTokens: function(line, precise) {\n return takeToken(this, Pos(line), precise, true)\n },\n\n getTokenTypeAt: function(pos) {\n pos = clipPos(this.doc, pos)\n var styles = getLineStyles(this, getLine(this.doc, pos.line))\n var before = 0, after = (styles.length - 1) / 2, ch = pos.ch\n var type\n if (ch == 0) { type = styles[2] }\n else { for (;;) {\n var mid = (before + after) >> 1\n if ((mid ? styles[mid * 2 - 1] : 0) >= ch) { after = mid }\n else if (styles[mid * 2 + 1] < ch) { before = mid + 1 }\n else { type = styles[mid * 2 + 2]; break }\n } }\n var cut = type ? type.indexOf(\"overlay \") : -1\n return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1)\n },\n\n getModeAt: function(pos) {\n var mode = this.doc.mode\n if (!mode.innerMode) { return mode }\n return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode\n },\n\n getHelper: function(pos, type) {\n return this.getHelpers(pos, type)[0]\n },\n\n getHelpers: function(pos, type) {\n var this$1 = this;\n\n var found = []\n if (!helpers.hasOwnProperty(type)) { return found }\n var help = helpers[type], mode = this.getModeAt(pos)\n if (typeof mode[type] == \"string\") {\n if (help[mode[type]]) { found.push(help[mode[type]]) }\n } else if (mode[type]) {\n for (var i = 0; i < mode[type].length; i++) {\n var val = help[mode[type][i]]\n if (val) { found.push(val) }\n }\n } else if (mode.helperType && help[mode.helperType]) {\n found.push(help[mode.helperType])\n } else if (help[mode.name]) {\n found.push(help[mode.name])\n }\n for (var i$1 = 0; i$1 < help._global.length; i$1++) {\n var cur = help._global[i$1]\n if (cur.pred(mode, this$1) && indexOf(found, cur.val) == -1)\n { found.push(cur.val) }\n }\n return found\n },\n\n getStateAfter: function(line, precise) {\n var doc = this.doc\n line = clipLine(doc, line == null ? doc.first + doc.size - 1: line)\n return getContextBefore(this, line + 1, precise).state\n },\n\n cursorCoords: function(start, mode) {\n var pos, range = this.doc.sel.primary()\n if (start == null) { pos = range.head }\n else if (typeof start == \"object\") { pos = clipPos(this.doc, start) }\n else { pos = start ? range.from() : range.to() }\n return cursorCoords(this, pos, mode || \"page\")\n },\n\n charCoords: function(pos, mode) {\n return charCoords(this, clipPos(this.doc, pos), mode || \"page\")\n },\n\n coordsChar: function(coords, mode) {\n coords = fromCoordSystem(this, coords, mode || \"page\")\n return coordsChar(this, coords.left, coords.top)\n },\n\n lineAtHeight: function(height, mode) {\n height = fromCoordSystem(this, {top: height, left: 0}, mode || \"page\").top\n return lineAtHeight(this.doc, height + this.display.viewOffset)\n },\n heightAtLine: function(line, mode, includeWidgets) {\n var end = false, lineObj\n if (typeof line == \"number\") {\n var last = this.doc.first + this.doc.size - 1\n if (line < this.doc.first) { line = this.doc.first }\n else if (line > last) { line = last; end = true }\n lineObj = getLine(this.doc, line)\n } else {\n lineObj = line\n }\n return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || \"page\", includeWidgets || end).top +\n (end ? this.doc.height - heightAtLine(lineObj) : 0)\n },\n\n defaultTextHeight: function() { return textHeight(this.display) },\n defaultCharWidth: function() { return charWidth(this.display) },\n\n getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}},\n\n addWidget: function(pos, node, scroll, vert, horiz) {\n var display = this.display\n pos = cursorCoords(this, clipPos(this.doc, pos))\n var top = pos.bottom, left = pos.left\n node.style.position = \"absolute\"\n node.setAttribute(\"cm-ignore-events\", \"true\")\n this.display.input.setUneditable(node)\n display.sizer.appendChild(node)\n if (vert == \"over\") {\n top = pos.top\n } else if (vert == \"above\" || vert == \"near\") {\n var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),\n hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth)\n // Default to positioning above (if specified and possible); otherwise default to positioning below\n if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)\n { top = pos.top - node.offsetHeight }\n else if (pos.bottom + node.offsetHeight <= vspace)\n { top = pos.bottom }\n if (left + node.offsetWidth > hspace)\n { left = hspace - node.offsetWidth }\n }\n node.style.top = top + \"px\"\n node.style.left = node.style.right = \"\"\n if (horiz == \"right\") {\n left = display.sizer.clientWidth - node.offsetWidth\n node.style.right = \"0px\"\n } else {\n if (horiz == \"left\") { left = 0 }\n else if (horiz == \"middle\") { left = (display.sizer.clientWidth - node.offsetWidth) / 2 }\n node.style.left = left + \"px\"\n }\n if (scroll)\n { scrollIntoView(this, {left: left, top: top, right: left + node.offsetWidth, bottom: top + node.offsetHeight}) }\n },\n\n triggerOnKeyDown: methodOp(onKeyDown),\n triggerOnKeyPress: methodOp(onKeyPress),\n triggerOnKeyUp: onKeyUp,\n triggerOnMouseDown: methodOp(onMouseDown),\n\n execCommand: function(cmd) {\n if (commands.hasOwnProperty(cmd))\n { return commands[cmd].call(null, this) }\n },\n\n triggerElectric: methodOp(function(text) { triggerElectric(this, text) }),\n\n findPosH: function(from, amount, unit, visually) {\n var this$1 = this;\n\n var dir = 1\n if (amount < 0) { dir = -1; amount = -amount }\n var cur = clipPos(this.doc, from)\n for (var i = 0; i < amount; ++i) {\n cur = findPosH(this$1.doc, cur, dir, unit, visually)\n if (cur.hitSide) { break }\n }\n return cur\n },\n\n moveH: methodOp(function(dir, unit) {\n var this$1 = this;\n\n this.extendSelectionsBy(function (range) {\n if (this$1.display.shift || this$1.doc.extend || range.empty())\n { return findPosH(this$1.doc, range.head, dir, unit, this$1.options.rtlMoveVisually) }\n else\n { return dir < 0 ? range.from() : range.to() }\n }, sel_move)\n }),\n\n deleteH: methodOp(function(dir, unit) {\n var sel = this.doc.sel, doc = this.doc\n if (sel.somethingSelected())\n { doc.replaceSelection(\"\", null, \"+delete\") }\n else\n { deleteNearSelection(this, function (range) {\n var other = findPosH(doc, range.head, dir, unit, false)\n return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other}\n }) }\n }),\n\n findPosV: function(from, amount, unit, goalColumn) {\n var this$1 = this;\n\n var dir = 1, x = goalColumn\n if (amount < 0) { dir = -1; amount = -amount }\n var cur = clipPos(this.doc, from)\n for (var i = 0; i < amount; ++i) {\n var coords = cursorCoords(this$1, cur, \"div\")\n if (x == null) { x = coords.left }\n else { coords.left = x }\n cur = findPosV(this$1, coords, dir, unit)\n if (cur.hitSide) { break }\n }\n return cur\n },\n\n moveV: methodOp(function(dir, unit) {\n var this$1 = this;\n\n var doc = this.doc, goals = []\n var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected()\n doc.extendSelectionsBy(function (range) {\n if (collapse)\n { return dir < 0 ? range.from() : range.to() }\n var headPos = cursorCoords(this$1, range.head, \"div\")\n if (range.goalColumn != null) { headPos.left = range.goalColumn }\n goals.push(headPos.left)\n var pos = findPosV(this$1, headPos, dir, unit)\n if (unit == \"page\" && range == doc.sel.primary())\n { addToScrollTop(this$1, charCoords(this$1, pos, \"div\").top - headPos.top) }\n return pos\n }, sel_move)\n if (goals.length) { for (var i = 0; i < doc.sel.ranges.length; i++)\n { doc.sel.ranges[i].goalColumn = goals[i] } }\n }),\n\n // Find the word at the given position (as returned by coordsChar).\n findWordAt: function(pos) {\n var doc = this.doc, line = getLine(doc, pos.line).text\n var start = pos.ch, end = pos.ch\n if (line) {\n var helper = this.getHelper(pos, \"wordChars\")\n if ((pos.sticky == \"before\" || end == line.length) && start) { --start; } else { ++end }\n var startChar = line.charAt(start)\n var check = isWordChar(startChar, helper)\n ? function (ch) { return isWordChar(ch, helper); }\n : /\\s/.test(startChar) ? function (ch) { return /\\s/.test(ch); }\n : function (ch) { return (!/\\s/.test(ch) && !isWordChar(ch)); }\n while (start > 0 && check(line.charAt(start - 1))) { --start }\n while (end < line.length && check(line.charAt(end))) { ++end }\n }\n return new Range(Pos(pos.line, start), Pos(pos.line, end))\n },\n\n toggleOverwrite: function(value) {\n if (value != null && value == this.state.overwrite) { return }\n if (this.state.overwrite = !this.state.overwrite)\n { addClass(this.display.cursorDiv, \"CodeMirror-overwrite\") }\n else\n { rmClass(this.display.cursorDiv, \"CodeMirror-overwrite\") }\n\n signal(this, \"overwriteToggle\", this, this.state.overwrite)\n },\n hasFocus: function() { return this.display.input.getField() == activeElt() },\n isReadOnly: function() { return !!(this.options.readOnly || this.doc.cantEdit) },\n\n scrollTo: methodOp(function (x, y) { scrollToCoords(this, x, y) }),\n getScrollInfo: function() {\n var scroller = this.display.scroller\n return {left: scroller.scrollLeft, top: scroller.scrollTop,\n height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,\n width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,\n clientHeight: displayHeight(this), clientWidth: displayWidth(this)}\n },\n\n scrollIntoView: methodOp(function(range, margin) {\n if (range == null) {\n range = {from: this.doc.sel.primary().head, to: null}\n if (margin == null) { margin = this.options.cursorScrollMargin }\n } else if (typeof range == \"number\") {\n range = {from: Pos(range, 0), to: null}\n } else if (range.from == null) {\n range = {from: range, to: null}\n }\n if (!range.to) { range.to = range.from }\n range.margin = margin || 0\n\n if (range.from.line != null) {\n scrollToRange(this, range)\n } else {\n scrollToCoordsRange(this, range.from, range.to, range.margin)\n }\n }),\n\n setSize: methodOp(function(width, height) {\n var this$1 = this;\n\n var interpret = function (val) { return typeof val == \"number\" || /^\\d+$/.test(String(val)) ? val + \"px\" : val; }\n if (width != null) { this.display.wrapper.style.width = interpret(width) }\n if (height != null) { this.display.wrapper.style.height = interpret(height) }\n if (this.options.lineWrapping) { clearLineMeasurementCache(this) }\n var lineNo = this.display.viewFrom\n this.doc.iter(lineNo, this.display.viewTo, function (line) {\n if (line.widgets) { for (var i = 0; i < line.widgets.length; i++)\n { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo, \"widget\"); break } } }\n ++lineNo\n })\n this.curOp.forceUpdate = true\n signal(this, \"refresh\", this)\n }),\n\n operation: function(f){return runInOp(this, f)},\n startOperation: function(){return startOperation(this)},\n endOperation: function(){return endOperation(this)},\n\n refresh: methodOp(function() {\n var oldHeight = this.display.cachedTextHeight\n regChange(this)\n this.curOp.forceUpdate = true\n clearCaches(this)\n scrollToCoords(this, this.doc.scrollLeft, this.doc.scrollTop)\n updateGutterSpace(this)\n if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)\n { estimateLineHeights(this) }\n signal(this, \"refresh\", this)\n }),\n\n swapDoc: methodOp(function(doc) {\n var old = this.doc\n old.cm = null\n attachDoc(this, doc)\n clearCaches(this)\n this.display.input.reset()\n scrollToCoords(this, doc.scrollLeft, doc.scrollTop)\n this.curOp.forceScroll = true\n signalLater(this, \"swapDoc\", this, old)\n return old\n }),\n\n getInputField: function(){return this.display.input.getField()},\n getWrapperElement: function(){return this.display.wrapper},\n getScrollerElement: function(){return this.display.scroller},\n getGutterElement: function(){return this.display.gutters}\n }\n eventMixin(CodeMirror)\n\n CodeMirror.registerHelper = function(type, name, value) {\n if (!helpers.hasOwnProperty(type)) { helpers[type] = CodeMirror[type] = {_global: []} }\n helpers[type][name] = value\n }\n CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {\n CodeMirror.registerHelper(type, name, value)\n helpers[type]._global.push({pred: predicate, val: value})\n }\n}\n\n// Used for horizontal relative motion. Dir is -1 or 1 (left or\n// right), unit can be \"char\", \"column\" (like char, but doesn't\n// cross line boundaries), \"word\" (across next word), or \"group\" (to\n// the start of next group of word or non-word-non-whitespace\n// chars). The visually param controls whether, in right-to-left\n// text, direction 1 means to move towards the next index in the\n// string, or towards the character to the right of the current\n// position. The resulting position will have a hitSide=true\n// property if it reached the end of the document.\nfunction findPosH(doc, pos, dir, unit, visually) {\n var oldPos = pos\n var origDir = dir\n var lineObj = getLine(doc, pos.line)\n function findNextLine() {\n var l = pos.line + dir\n if (l < doc.first || l >= doc.first + doc.size) { return false }\n pos = new Pos(l, pos.ch, pos.sticky)\n return lineObj = getLine(doc, l)\n }\n function moveOnce(boundToLine) {\n var next\n if (visually) {\n next = moveVisually(doc.cm, lineObj, pos, dir)\n } else {\n next = moveLogically(lineObj, pos, dir)\n }\n if (next == null) {\n if (!boundToLine && findNextLine())\n { pos = endOfLine(visually, doc.cm, lineObj, pos.line, dir) }\n else\n { return false }\n } else {\n pos = next\n }\n return true\n }\n\n if (unit == \"char\") {\n moveOnce()\n } else if (unit == \"column\") {\n moveOnce(true)\n } else if (unit == \"word\" || unit == \"group\") {\n var sawType = null, group = unit == \"group\"\n var helper = doc.cm && doc.cm.getHelper(pos, \"wordChars\")\n for (var first = true;; first = false) {\n if (dir < 0 && !moveOnce(!first)) { break }\n var cur = lineObj.text.charAt(pos.ch) || \"\\n\"\n var type = isWordChar(cur, helper) ? \"w\"\n : group && cur == \"\\n\" ? \"n\"\n : !group || /\\s/.test(cur) ? null\n : \"p\"\n if (group && !first && !type) { type = \"s\" }\n if (sawType && sawType != type) {\n if (dir < 0) {dir = 1; moveOnce(); pos.sticky = \"after\"}\n break\n }\n\n if (type) { sawType = type }\n if (dir > 0 && !moveOnce(!first)) { break }\n }\n }\n var result = skipAtomic(doc, pos, oldPos, origDir, true)\n if (equalCursorPos(oldPos, result)) { result.hitSide = true }\n return result\n}\n\n// For relative vertical movement. Dir may be -1 or 1. Unit can be\n// \"page\" or \"line\". The resulting position will have a hitSide=true\n// property if it reached the end of the document.\nfunction findPosV(cm, pos, dir, unit) {\n var doc = cm.doc, x = pos.left, y\n if (unit == \"page\") {\n var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight)\n var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3)\n y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount\n\n } else if (unit == \"line\") {\n y = dir > 0 ? pos.bottom + 3 : pos.top - 3\n }\n var target\n for (;;) {\n target = coordsChar(cm, x, y)\n if (!target.outside) { break }\n if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break }\n y += dir * 5\n }\n return target\n}\n\n// CONTENTEDITABLE INPUT STYLE\n\nvar ContentEditableInput = function(cm) {\n this.cm = cm\n this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null\n this.polling = new Delayed()\n this.composing = null\n this.gracePeriod = false\n this.readDOMTimeout = null\n};\n\nContentEditableInput.prototype.init = function (display) {\n var this$1 = this;\n\n var input = this, cm = input.cm\n var div = input.div = display.lineDiv\n disableBrowserMagic(div, cm.options.spellcheck)\n\n on(div, \"paste\", function (e) {\n if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }\n // IE doesn't fire input events, so we schedule a read for the pasted content in this way\n if (ie_version <= 11) { setTimeout(operation(cm, function () { return this$1.updateFromDOM(); }), 20) }\n })\n\n on(div, \"compositionstart\", function (e) {\n this$1.composing = {data: e.data, done: false}\n })\n on(div, \"compositionupdate\", function (e) {\n if (!this$1.composing) { this$1.composing = {data: e.data, done: false} }\n })\n on(div, \"compositionend\", function (e) {\n if (this$1.composing) {\n if (e.data != this$1.composing.data) { this$1.readFromDOMSoon() }\n this$1.composing.done = true\n }\n })\n\n on(div, \"touchstart\", function () { return input.forceCompositionEnd(); })\n\n on(div, \"input\", function () {\n if (!this$1.composing) { this$1.readFromDOMSoon() }\n })\n\n function onCopyCut(e) {\n if (signalDOMEvent(cm, e)) { return }\n if (cm.somethingSelected()) {\n setLastCopied({lineWise: false, text: cm.getSelections()})\n if (e.type == \"cut\") { cm.replaceSelection(\"\", null, \"cut\") }\n } else if (!cm.options.lineWiseCopyCut) {\n return\n } else {\n var ranges = copyableRanges(cm)\n setLastCopied({lineWise: true, text: ranges.text})\n if (e.type == \"cut\") {\n cm.operation(function () {\n cm.setSelections(ranges.ranges, 0, sel_dontScroll)\n cm.replaceSelection(\"\", null, \"cut\")\n })\n }\n }\n if (e.clipboardData) {\n e.clipboardData.clearData()\n var content = lastCopied.text.join(\"\\n\")\n // iOS exposes the clipboard API, but seems to discard content inserted into it\n e.clipboardData.setData(\"Text\", content)\n if (e.clipboardData.getData(\"Text\") == content) {\n e.preventDefault()\n return\n }\n }\n // Old-fashioned briefly-focus-a-textarea hack\n var kludge = hiddenTextarea(), te = kludge.firstChild\n cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild)\n te.value = lastCopied.text.join(\"\\n\")\n var hadFocus = document.activeElement\n selectInput(te)\n setTimeout(function () {\n cm.display.lineSpace.removeChild(kludge)\n hadFocus.focus()\n if (hadFocus == div) { input.showPrimarySelection() }\n }, 50)\n }\n on(div, \"copy\", onCopyCut)\n on(div, \"cut\", onCopyCut)\n};\n\nContentEditableInput.prototype.prepareSelection = function () {\n var result = prepareSelection(this.cm, false)\n result.focus = this.cm.state.focused\n return result\n};\n\nContentEditableInput.prototype.showSelection = function (info, takeFocus) {\n if (!info || !this.cm.display.view.length) { return }\n if (info.focus || takeFocus) { this.showPrimarySelection() }\n this.showMultipleSelections(info)\n};\n\nContentEditableInput.prototype.showPrimarySelection = function () {\n var sel = window.getSelection(), cm = this.cm, prim = cm.doc.sel.primary()\n var from = prim.from(), to = prim.to()\n\n if (cm.display.viewTo == cm.display.viewFrom || from.line >= cm.display.viewTo || to.line < cm.display.viewFrom) {\n sel.removeAllRanges()\n return\n }\n\n var curAnchor = domToPos(cm, sel.anchorNode, sel.anchorOffset)\n var curFocus = domToPos(cm, sel.focusNode, sel.focusOffset)\n if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&\n cmp(minPos(curAnchor, curFocus), from) == 0 &&\n cmp(maxPos(curAnchor, curFocus), to) == 0)\n { return }\n\n var view = cm.display.view\n var start = (from.line >= cm.display.viewFrom && posToDOM(cm, from)) ||\n {node: view[0].measure.map[2], offset: 0}\n var end = to.line < cm.display.viewTo && posToDOM(cm, to)\n if (!end) {\n var measure = view[view.length - 1].measure\n var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map\n end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]}\n }\n\n if (!start || !end) {\n sel.removeAllRanges()\n return\n }\n\n var old = sel.rangeCount && sel.getRangeAt(0), rng\n try { rng = range(start.node, start.offset, end.offset, end.node) }\n catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible\n if (rng) {\n if (!gecko && cm.state.focused) {\n sel.collapse(start.node, start.offset)\n if (!rng.collapsed) {\n sel.removeAllRanges()\n sel.addRange(rng)\n }\n } else {\n sel.removeAllRanges()\n sel.addRange(rng)\n }\n if (old && sel.anchorNode == null) { sel.addRange(old) }\n else if (gecko) { this.startGracePeriod() }\n }\n this.rememberSelection()\n};\n\nContentEditableInput.prototype.startGracePeriod = function () {\n var this$1 = this;\n\n clearTimeout(this.gracePeriod)\n this.gracePeriod = setTimeout(function () {\n this$1.gracePeriod = false\n if (this$1.selectionChanged())\n { this$1.cm.operation(function () { return this$1.cm.curOp.selectionChanged = true; }) }\n }, 20)\n};\n\nContentEditableInput.prototype.showMultipleSelections = function (info) {\n removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors)\n removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection)\n};\n\nContentEditableInput.prototype.rememberSelection = function () {\n var sel = window.getSelection()\n this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset\n this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset\n};\n\nContentEditableInput.prototype.selectionInEditor = function () {\n var sel = window.getSelection()\n if (!sel.rangeCount) { return false }\n var node = sel.getRangeAt(0).commonAncestorContainer\n return contains(this.div, node)\n};\n\nContentEditableInput.prototype.focus = function () {\n if (this.cm.options.readOnly != \"nocursor\") {\n if (!this.selectionInEditor())\n { this.showSelection(this.prepareSelection(), true) }\n this.div.focus()\n }\n};\nContentEditableInput.prototype.blur = function () { this.div.blur() };\nContentEditableInput.prototype.getField = function () { return this.div };\n\nContentEditableInput.prototype.supportsTouch = function () { return true };\n\nContentEditableInput.prototype.receivedFocus = function () {\n var input = this\n if (this.selectionInEditor())\n { this.pollSelection() }\n else\n { runInOp(this.cm, function () { return input.cm.curOp.selectionChanged = true; }) }\n\n function poll() {\n if (input.cm.state.focused) {\n input.pollSelection()\n input.polling.set(input.cm.options.pollInterval, poll)\n }\n }\n this.polling.set(this.cm.options.pollInterval, poll)\n};\n\nContentEditableInput.prototype.selectionChanged = function () {\n var sel = window.getSelection()\n return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||\n sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset\n};\n\nContentEditableInput.prototype.pollSelection = function () {\n if (this.readDOMTimeout != null || this.gracePeriod || !this.selectionChanged()) { return }\n var sel = window.getSelection(), cm = this.cm\n // On Android Chrome (version 56, at least), backspacing into an\n // uneditable block element will put the cursor in that element,\n // and then, because it's not editable, hide the virtual keyboard.\n // Because Android doesn't allow us to actually detect backspace\n // presses in a sane way, this code checks for when that happens\n // and simulates a backspace press in this case.\n if (android && chrome && this.cm.options.gutters.length && isInGutter(sel.anchorNode)) {\n this.cm.triggerOnKeyDown({type: \"keydown\", keyCode: 8, preventDefault: Math.abs})\n this.blur()\n this.focus()\n return\n }\n if (this.composing) { return }\n this.rememberSelection()\n var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset)\n var head = domToPos(cm, sel.focusNode, sel.focusOffset)\n if (anchor && head) { runInOp(cm, function () {\n setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll)\n if (anchor.bad || head.bad) { cm.curOp.selectionChanged = true }\n }) }\n};\n\nContentEditableInput.prototype.pollContent = function () {\n if (this.readDOMTimeout != null) {\n clearTimeout(this.readDOMTimeout)\n this.readDOMTimeout = null\n }\n\n var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary()\n var from = sel.from(), to = sel.to()\n if (from.ch == 0 && from.line > cm.firstLine())\n { from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length) }\n if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine())\n { to = Pos(to.line + 1, 0) }\n if (from.line < display.viewFrom || to.line > display.viewTo - 1) { return false }\n\n var fromIndex, fromLine, fromNode\n if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {\n fromLine = lineNo(display.view[0].line)\n fromNode = display.view[0].node\n } else {\n fromLine = lineNo(display.view[fromIndex].line)\n fromNode = display.view[fromIndex - 1].node.nextSibling\n }\n var toIndex = findViewIndex(cm, to.line)\n var toLine, toNode\n if (toIndex == display.view.length - 1) {\n toLine = display.viewTo - 1\n toNode = display.lineDiv.lastChild\n } else {\n toLine = lineNo(display.view[toIndex + 1].line) - 1\n toNode = display.view[toIndex + 1].node.previousSibling\n }\n\n if (!fromNode) { return false }\n var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine))\n var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length))\n while (newText.length > 1 && oldText.length > 1) {\n if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine-- }\n else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++ }\n else { break }\n }\n\n var cutFront = 0, cutEnd = 0\n var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length)\n while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))\n { ++cutFront }\n var newBot = lst(newText), oldBot = lst(oldText)\n var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),\n oldBot.length - (oldText.length == 1 ? cutFront : 0))\n while (cutEnd < maxCutEnd &&\n newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))\n { ++cutEnd }\n // Try to move start of change to start of selection if ambiguous\n if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) {\n while (cutFront && cutFront > from.ch &&\n newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) {\n cutFront--\n cutEnd++\n }\n }\n\n newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\\u200b+/, \"\")\n newText[0] = newText[0].slice(cutFront).replace(/\\u200b+$/, \"\")\n\n var chFrom = Pos(fromLine, cutFront)\n var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0)\n if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {\n replaceRange(cm.doc, newText, chFrom, chTo, \"+input\")\n return true\n }\n};\n\nContentEditableInput.prototype.ensurePolled = function () {\n this.forceCompositionEnd()\n};\nContentEditableInput.prototype.reset = function () {\n this.forceCompositionEnd()\n};\nContentEditableInput.prototype.forceCompositionEnd = function () {\n if (!this.composing) { return }\n clearTimeout(this.readDOMTimeout)\n this.composing = null\n this.updateFromDOM()\n this.div.blur()\n this.div.focus()\n};\nContentEditableInput.prototype.readFromDOMSoon = function () {\n var this$1 = this;\n\n if (this.readDOMTimeout != null) { return }\n this.readDOMTimeout = setTimeout(function () {\n this$1.readDOMTimeout = null\n if (this$1.composing) {\n if (this$1.composing.done) { this$1.composing = null }\n else { return }\n }\n this$1.updateFromDOM()\n }, 80)\n};\n\nContentEditableInput.prototype.updateFromDOM = function () {\n var this$1 = this;\n\n if (this.cm.isReadOnly() || !this.pollContent())\n { runInOp(this.cm, function () { return regChange(this$1.cm); }) }\n};\n\nContentEditableInput.prototype.setUneditable = function (node) {\n node.contentEditable = \"false\"\n};\n\nContentEditableInput.prototype.onKeyPress = function (e) {\n if (e.charCode == 0) { return }\n e.preventDefault()\n if (!this.cm.isReadOnly())\n { operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0) }\n};\n\nContentEditableInput.prototype.readOnlyChanged = function (val) {\n this.div.contentEditable = String(val != \"nocursor\")\n};\n\nContentEditableInput.prototype.onContextMenu = function () {};\nContentEditableInput.prototype.resetPosition = function () {};\n\nContentEditableInput.prototype.needsContentAttribute = true\n\nfunction posToDOM(cm, pos) {\n var view = findViewForLine(cm, pos.line)\n if (!view || view.hidden) { return null }\n var line = getLine(cm.doc, pos.line)\n var info = mapFromLineView(view, line, pos.line)\n\n var order = getOrder(line, cm.doc.direction), side = \"left\"\n if (order) {\n var partPos = getBidiPartAt(order, pos.ch)\n side = partPos % 2 ? \"right\" : \"left\"\n }\n var result = nodeAndOffsetInLineMap(info.map, pos.ch, side)\n result.offset = result.collapse == \"right\" ? result.end : result.start\n return result\n}\n\nfunction isInGutter(node) {\n for (var scan = node; scan; scan = scan.parentNode)\n { if (/CodeMirror-gutter-wrapper/.test(scan.className)) { return true } }\n return false\n}\n\nfunction badPos(pos, bad) { if (bad) { pos.bad = true; } return pos }\n\nfunction domTextBetween(cm, from, to, fromLine, toLine) {\n var text = \"\", closing = false, lineSep = cm.doc.lineSeparator()\n function recognizeMarker(id) { return function (marker) { return marker.id == id; } }\n function close() {\n if (closing) {\n text += lineSep\n closing = false\n }\n }\n function addText(str) {\n if (str) {\n close()\n text += str\n }\n }\n function walk(node) {\n if (node.nodeType == 1) {\n var cmText = node.getAttribute(\"cm-text\")\n if (cmText != null) {\n addText(cmText || node.textContent.replace(/\\u200b/g, \"\"))\n return\n }\n var markerID = node.getAttribute(\"cm-marker\"), range\n if (markerID) {\n var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID))\n if (found.length && (range = found[0].find()))\n { addText(getBetween(cm.doc, range.from, range.to).join(lineSep)) }\n return\n }\n if (node.getAttribute(\"contenteditable\") == \"false\") { return }\n var isBlock = /^(pre|div|p)$/i.test(node.nodeName)\n if (isBlock) { close() }\n for (var i = 0; i < node.childNodes.length; i++)\n { walk(node.childNodes[i]) }\n if (isBlock) { closing = true }\n } else if (node.nodeType == 3) {\n addText(node.nodeValue)\n }\n }\n for (;;) {\n walk(from)\n if (from == to) { break }\n from = from.nextSibling\n }\n return text\n}\n\nfunction domToPos(cm, node, offset) {\n var lineNode\n if (node == cm.display.lineDiv) {\n lineNode = cm.display.lineDiv.childNodes[offset]\n if (!lineNode) { return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true) }\n node = null; offset = 0\n } else {\n for (lineNode = node;; lineNode = lineNode.parentNode) {\n if (!lineNode || lineNode == cm.display.lineDiv) { return null }\n if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) { break }\n }\n }\n for (var i = 0; i < cm.display.view.length; i++) {\n var lineView = cm.display.view[i]\n if (lineView.node == lineNode)\n { return locateNodeInLineView(lineView, node, offset) }\n }\n}\n\nfunction locateNodeInLineView(lineView, node, offset) {\n var wrapper = lineView.text.firstChild, bad = false\n if (!node || !contains(wrapper, node)) { return badPos(Pos(lineNo(lineView.line), 0), true) }\n if (node == wrapper) {\n bad = true\n node = wrapper.childNodes[offset]\n offset = 0\n if (!node) {\n var line = lineView.rest ? lst(lineView.rest) : lineView.line\n return badPos(Pos(lineNo(line), line.text.length), bad)\n }\n }\n\n var textNode = node.nodeType == 3 ? node : null, topNode = node\n if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {\n textNode = node.firstChild\n if (offset) { offset = textNode.nodeValue.length }\n }\n while (topNode.parentNode != wrapper) { topNode = topNode.parentNode }\n var measure = lineView.measure, maps = measure.maps\n\n function find(textNode, topNode, offset) {\n for (var i = -1; i < (maps ? maps.length : 0); i++) {\n var map = i < 0 ? measure.map : maps[i]\n for (var j = 0; j < map.length; j += 3) {\n var curNode = map[j + 2]\n if (curNode == textNode || curNode == topNode) {\n var line = lineNo(i < 0 ? lineView.line : lineView.rest[i])\n var ch = map[j] + offset\n if (offset < 0 || curNode != textNode) { ch = map[j + (offset ? 1 : 0)] }\n return Pos(line, ch)\n }\n }\n }\n }\n var found = find(textNode, topNode, offset)\n if (found) { return badPos(found, bad) }\n\n // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems\n for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {\n found = find(after, after.firstChild, 0)\n if (found)\n { return badPos(Pos(found.line, found.ch - dist), bad) }\n else\n { dist += after.textContent.length }\n }\n for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) {\n found = find(before, before.firstChild, -1)\n if (found)\n { return badPos(Pos(found.line, found.ch + dist$1), bad) }\n else\n { dist$1 += before.textContent.length }\n }\n}\n\n// TEXTAREA INPUT STYLE\n\nvar TextareaInput = function(cm) {\n this.cm = cm\n // See input.poll and input.reset\n this.prevInput = \"\"\n\n // Flag that indicates whether we expect input to appear real soon\n // now (after some event like 'keypress' or 'input') and are\n // polling intensively.\n this.pollingFast = false\n // Self-resetting timeout for the poller\n this.polling = new Delayed()\n // Used to work around IE issue with selection being forgotten when focus moves away from textarea\n this.hasSelection = false\n this.composing = null\n};\n\nTextareaInput.prototype.init = function (display) {\n var this$1 = this;\n\n var input = this, cm = this.cm\n\n // Wraps and hides input textarea\n var div = this.wrapper = hiddenTextarea()\n // The semihidden textarea that is focused when the editor is\n // focused, and receives input.\n var te = this.textarea = div.firstChild\n display.wrapper.insertBefore(div, display.wrapper.firstChild)\n\n // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)\n if (ios) { te.style.width = \"0px\" }\n\n on(te, \"input\", function () {\n if (ie && ie_version >= 9 && this$1.hasSelection) { this$1.hasSelection = null }\n input.poll()\n })\n\n on(te, \"paste\", function (e) {\n if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }\n\n cm.state.pasteIncoming = true\n input.fastPoll()\n })\n\n function prepareCopyCut(e) {\n if (signalDOMEvent(cm, e)) { return }\n if (cm.somethingSelected()) {\n setLastCopied({lineWise: false, text: cm.getSelections()})\n } else if (!cm.options.lineWiseCopyCut) {\n return\n } else {\n var ranges = copyableRanges(cm)\n setLastCopied({lineWise: true, text: ranges.text})\n if (e.type == \"cut\") {\n cm.setSelections(ranges.ranges, null, sel_dontScroll)\n } else {\n input.prevInput = \"\"\n te.value = ranges.text.join(\"\\n\")\n selectInput(te)\n }\n }\n if (e.type == \"cut\") { cm.state.cutIncoming = true }\n }\n on(te, \"cut\", prepareCopyCut)\n on(te, \"copy\", prepareCopyCut)\n\n on(display.scroller, \"paste\", function (e) {\n if (eventInWidget(display, e) || signalDOMEvent(cm, e)) { return }\n cm.state.pasteIncoming = true\n input.focus()\n })\n\n // Prevent normal selection in the editor (we handle our own)\n on(display.lineSpace, \"selectstart\", function (e) {\n if (!eventInWidget(display, e)) { e_preventDefault(e) }\n })\n\n on(te, \"compositionstart\", function () {\n var start = cm.getCursor(\"from\")\n if (input.composing) { input.composing.range.clear() }\n input.composing = {\n start: start,\n range: cm.markText(start, cm.getCursor(\"to\"), {className: \"CodeMirror-composing\"})\n }\n })\n on(te, \"compositionend\", function () {\n if (input.composing) {\n input.poll()\n input.composing.range.clear()\n input.composing = null\n }\n })\n};\n\nTextareaInput.prototype.prepareSelection = function () {\n // Redraw the selection and/or cursor\n var cm = this.cm, display = cm.display, doc = cm.doc\n var result = prepareSelection(cm)\n\n // Move the hidden textarea near the cursor to prevent scrolling artifacts\n if (cm.options.moveInputWithCursor) {\n var headPos = cursorCoords(cm, doc.sel.primary().head, \"div\")\n var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect()\n result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,\n headPos.top + lineOff.top - wrapOff.top))\n result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,\n headPos.left + lineOff.left - wrapOff.left))\n }\n\n return result\n};\n\nTextareaInput.prototype.showSelection = function (drawn) {\n var cm = this.cm, display = cm.display\n removeChildrenAndAdd(display.cursorDiv, drawn.cursors)\n removeChildrenAndAdd(display.selectionDiv, drawn.selection)\n if (drawn.teTop != null) {\n this.wrapper.style.top = drawn.teTop + \"px\"\n this.wrapper.style.left = drawn.teLeft + \"px\"\n }\n};\n\n// Reset the input to correspond to the selection (or to be empty,\n// when not typing and nothing is selected)\nTextareaInput.prototype.reset = function (typing) {\n if (this.contextMenuPending || this.composing) { return }\n var cm = this.cm\n if (cm.somethingSelected()) {\n this.prevInput = \"\"\n var content = cm.getSelection()\n this.textarea.value = content\n if (cm.state.focused) { selectInput(this.textarea) }\n if (ie && ie_version >= 9) { this.hasSelection = content }\n } else if (!typing) {\n this.prevInput = this.textarea.value = \"\"\n if (ie && ie_version >= 9) { this.hasSelection = null }\n }\n};\n\nTextareaInput.prototype.getField = function () { return this.textarea };\n\nTextareaInput.prototype.supportsTouch = function () { return false };\n\nTextareaInput.prototype.focus = function () {\n if (this.cm.options.readOnly != \"nocursor\" && (!mobile || activeElt() != this.textarea)) {\n try { this.textarea.focus() }\n catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM\n }\n};\n\nTextareaInput.prototype.blur = function () { this.textarea.blur() };\n\nTextareaInput.prototype.resetPosition = function () {\n this.wrapper.style.top = this.wrapper.style.left = 0\n};\n\nTextareaInput.prototype.receivedFocus = function () { this.slowPoll() };\n\n// Poll for input changes, using the normal rate of polling. This\n// runs as long as the editor is focused.\nTextareaInput.prototype.slowPoll = function () {\n var this$1 = this;\n\n if (this.pollingFast) { return }\n this.polling.set(this.cm.options.pollInterval, function () {\n this$1.poll()\n if (this$1.cm.state.focused) { this$1.slowPoll() }\n })\n};\n\n// When an event has just come in that is likely to add or change\n// something in the input textarea, we poll faster, to ensure that\n// the change appears on the screen quickly.\nTextareaInput.prototype.fastPoll = function () {\n var missed = false, input = this\n input.pollingFast = true\n function p() {\n var changed = input.poll()\n if (!changed && !missed) {missed = true; input.polling.set(60, p)}\n else {input.pollingFast = false; input.slowPoll()}\n }\n input.polling.set(20, p)\n};\n\n// Read input from the textarea, and update the document to match.\n// When something is selected, it is present in the textarea, and\n// selected (unless it is huge, in which case a placeholder is\n// used). When nothing is selected, the cursor sits after previously\n// seen text (can be empty), which is stored in prevInput (we must\n// not reset the textarea when typing, because that breaks IME).\nTextareaInput.prototype.poll = function () {\n var this$1 = this;\n\n var cm = this.cm, input = this.textarea, prevInput = this.prevInput\n // Since this is called a *lot*, try to bail out as cheaply as\n // possible when it is clear that nothing happened. hasSelection\n // will be the case when there is a lot of text in the textarea,\n // in which case reading its value would be expensive.\n if (this.contextMenuPending || !cm.state.focused ||\n (hasSelection(input) && !prevInput && !this.composing) ||\n cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq)\n { return false }\n\n var text = input.value\n // If nothing changed, bail.\n if (text == prevInput && !cm.somethingSelected()) { return false }\n // Work around nonsensical selection resetting in IE9/10, and\n // inexplicable appearance of private area unicode characters on\n // some key combos in Mac (#2689).\n if (ie && ie_version >= 9 && this.hasSelection === text ||\n mac && /[\\uf700-\\uf7ff]/.test(text)) {\n cm.display.input.reset()\n return false\n }\n\n if (cm.doc.sel == cm.display.selForContextMenu) {\n var first = text.charCodeAt(0)\n if (first == 0x200b && !prevInput) { prevInput = \"\\u200b\" }\n if (first == 0x21da) { this.reset(); return this.cm.execCommand(\"undo\") }\n }\n // Find the part of the input that is actually new\n var same = 0, l = Math.min(prevInput.length, text.length)\n while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) { ++same }\n\n runInOp(cm, function () {\n applyTextInput(cm, text.slice(same), prevInput.length - same,\n null, this$1.composing ? \"*compose\" : null)\n\n // Don't leave long text in the textarea, since it makes further polling slow\n if (text.length > 1000 || text.indexOf(\"\\n\") > -1) { input.value = this$1.prevInput = \"\" }\n else { this$1.prevInput = text }\n\n if (this$1.composing) {\n this$1.composing.range.clear()\n this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor(\"to\"),\n {className: \"CodeMirror-composing\"})\n }\n })\n return true\n};\n\nTextareaInput.prototype.ensurePolled = function () {\n if (this.pollingFast && this.poll()) { this.pollingFast = false }\n};\n\nTextareaInput.prototype.onKeyPress = function () {\n if (ie && ie_version >= 9) { this.hasSelection = null }\n this.fastPoll()\n};\n\nTextareaInput.prototype.onContextMenu = function (e) {\n var input = this, cm = input.cm, display = cm.display, te = input.textarea\n var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop\n if (!pos || presto) { return } // Opera is difficult.\n\n // Reset the current text selection only if the click is done outside of the selection\n // and 'resetSelectionOnContextMenu' option is true.\n var reset = cm.options.resetSelectionOnContextMenu\n if (reset && cm.doc.sel.contains(pos) == -1)\n { operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll) }\n\n var oldCSS = te.style.cssText, oldWrapperCSS = input.wrapper.style.cssText\n input.wrapper.style.cssText = \"position: absolute\"\n var wrapperBox = input.wrapper.getBoundingClientRect()\n te.style.cssText = \"position: absolute; width: 30px; height: 30px;\\n top: \" + (e.clientY - wrapperBox.top - 5) + \"px; left: \" + (e.clientX - wrapperBox.left - 5) + \"px;\\n z-index: 1000; background: \" + (ie ? \"rgba(255, 255, 255, .05)\" : \"transparent\") + \";\\n outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);\"\n var oldScrollY\n if (webkit) { oldScrollY = window.scrollY } // Work around Chrome issue (#2712)\n display.input.focus()\n if (webkit) { window.scrollTo(null, oldScrollY) }\n display.input.reset()\n // Adds \"Select all\" to context menu in FF\n if (!cm.somethingSelected()) { te.value = input.prevInput = \" \" }\n input.contextMenuPending = true\n display.selForContextMenu = cm.doc.sel\n clearTimeout(display.detectingSelectAll)\n\n // Select-all will be greyed out if there's nothing to select, so\n // this adds a zero-width space so that we can later check whether\n // it got selected.\n function prepareSelectAllHack() {\n if (te.selectionStart != null) {\n var selected = cm.somethingSelected()\n var extval = \"\\u200b\" + (selected ? te.value : \"\")\n te.value = \"\\u21da\" // Used to catch context-menu undo\n te.value = extval\n input.prevInput = selected ? \"\" : \"\\u200b\"\n te.selectionStart = 1; te.selectionEnd = extval.length\n // Re-set this, in case some other handler touched the\n // selection in the meantime.\n display.selForContextMenu = cm.doc.sel\n }\n }\n function rehide() {\n input.contextMenuPending = false\n input.wrapper.style.cssText = oldWrapperCSS\n te.style.cssText = oldCSS\n if (ie && ie_version < 9) { display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos) }\n\n // Try to detect the user choosing select-all\n if (te.selectionStart != null) {\n if (!ie || (ie && ie_version < 9)) { prepareSelectAllHack() }\n var i = 0, poll = function () {\n if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&\n te.selectionEnd > 0 && input.prevInput == \"\\u200b\") {\n operation(cm, selectAll)(cm)\n } else if (i++ < 10) {\n display.detectingSelectAll = setTimeout(poll, 500)\n } else {\n display.selForContextMenu = null\n display.input.reset()\n }\n }\n display.detectingSelectAll = setTimeout(poll, 200)\n }\n }\n\n if (ie && ie_version >= 9) { prepareSelectAllHack() }\n if (captureRightClick) {\n e_stop(e)\n var mouseup = function () {\n off(window, \"mouseup\", mouseup)\n setTimeout(rehide, 20)\n }\n on(window, \"mouseup\", mouseup)\n } else {\n setTimeout(rehide, 50)\n }\n};\n\nTextareaInput.prototype.readOnlyChanged = function (val) {\n if (!val) { this.reset() }\n this.textarea.disabled = val == \"nocursor\"\n};\n\nTextareaInput.prototype.setUneditable = function () {};\n\nTextareaInput.prototype.needsContentAttribute = false\n\nfunction fromTextArea(textarea, options) {\n options = options ? copyObj(options) : {}\n options.value = textarea.value\n if (!options.tabindex && textarea.tabIndex)\n { options.tabindex = textarea.tabIndex }\n if (!options.placeholder && textarea.placeholder)\n { options.placeholder = textarea.placeholder }\n // Set autofocus to true if this textarea is focused, or if it has\n // autofocus and no other element is focused.\n if (options.autofocus == null) {\n var hasFocus = activeElt()\n options.autofocus = hasFocus == textarea ||\n textarea.getAttribute(\"autofocus\") != null && hasFocus == document.body\n }\n\n function save() {textarea.value = cm.getValue()}\n\n var realSubmit\n if (textarea.form) {\n on(textarea.form, \"submit\", save)\n // Deplorable hack to make the submit method do the right thing.\n if (!options.leaveSubmitMethodAlone) {\n var form = textarea.form\n realSubmit = form.submit\n try {\n var wrappedSubmit = form.submit = function () {\n save()\n form.submit = realSubmit\n form.submit()\n form.submit = wrappedSubmit\n }\n } catch(e) {}\n }\n }\n\n options.finishInit = function (cm) {\n cm.save = save\n cm.getTextArea = function () { return textarea; }\n cm.toTextArea = function () {\n cm.toTextArea = isNaN // Prevent this from being ran twice\n save()\n textarea.parentNode.removeChild(cm.getWrapperElement())\n textarea.style.display = \"\"\n if (textarea.form) {\n off(textarea.form, \"submit\", save)\n if (typeof textarea.form.submit == \"function\")\n { textarea.form.submit = realSubmit }\n }\n }\n }\n\n textarea.style.display = \"none\"\n var cm = CodeMirror(function (node) { return textarea.parentNode.insertBefore(node, textarea.nextSibling); },\n options)\n return cm\n}\n\nfunction addLegacyProps(CodeMirror) {\n CodeMirror.off = off\n CodeMirror.on = on\n CodeMirror.wheelEventPixels = wheelEventPixels\n CodeMirror.Doc = Doc\n CodeMirror.splitLines = splitLinesAuto\n CodeMirror.countColumn = countColumn\n CodeMirror.findColumn = findColumn\n CodeMirror.isWordChar = isWordCharBasic\n CodeMirror.Pass = Pass\n CodeMirror.signal = signal\n CodeMirror.Line = Line\n CodeMirror.changeEnd = changeEnd\n CodeMirror.scrollbarModel = scrollbarModel\n CodeMirror.Pos = Pos\n CodeMirror.cmpPos = cmp\n CodeMirror.modes = modes\n CodeMirror.mimeModes = mimeModes\n CodeMirror.resolveMode = resolveMode\n CodeMirror.getMode = getMode\n CodeMirror.modeExtensions = modeExtensions\n CodeMirror.extendMode = extendMode\n CodeMirror.copyState = copyState\n CodeMirror.startState = startState\n CodeMirror.innerMode = innerMode\n CodeMirror.commands = commands\n CodeMirror.keyMap = keyMap\n CodeMirror.keyName = keyName\n CodeMirror.isModifierKey = isModifierKey\n CodeMirror.lookupKey = lookupKey\n CodeMirror.normalizeKeyMap = normalizeKeyMap\n CodeMirror.StringStream = StringStream\n CodeMirror.SharedTextMarker = SharedTextMarker\n CodeMirror.TextMarker = TextMarker\n CodeMirror.LineWidget = LineWidget\n CodeMirror.e_preventDefault = e_preventDefault\n CodeMirror.e_stopPropagation = e_stopPropagation\n CodeMirror.e_stop = e_stop\n CodeMirror.addClass = addClass\n CodeMirror.contains = contains\n CodeMirror.rmClass = rmClass\n CodeMirror.keyNames = keyNames\n}\n\n// EDITOR CONSTRUCTOR\n\ndefineOptions(CodeMirror)\n\naddEditorMethods(CodeMirror)\n\n// Set up methods on CodeMirror's prototype to redirect to the editor's document.\nvar dontDelegate = \"iter insert remove copy getEditor constructor\".split(\" \")\nfor (var prop in Doc.prototype) { if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)\n { CodeMirror.prototype[prop] = (function(method) {\n return function() {return method.apply(this.doc, arguments)}\n })(Doc.prototype[prop]) } }\n\neventMixin(Doc)\n\n// INPUT HANDLING\n\nCodeMirror.inputStyles = {\"textarea\": TextareaInput, \"contenteditable\": ContentEditableInput}\n\n// MODE DEFINITION AND QUERYING\n\n// Extra arguments are stored as the mode's dependencies, which is\n// used by (legacy) mechanisms like loadmode.js to automatically\n// load a mode. (Preferred mechanism is the require/define calls.)\nCodeMirror.defineMode = function(name/*, mode, …*/) {\n if (!CodeMirror.defaults.mode && name != \"null\") { CodeMirror.defaults.mode = name }\n defineMode.apply(this, arguments)\n}\n\nCodeMirror.defineMIME = defineMIME\n\n// Minimal default mode.\nCodeMirror.defineMode(\"null\", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); })\nCodeMirror.defineMIME(\"text/plain\", \"null\")\n\n// EXTENSIONS\n\nCodeMirror.defineExtension = function (name, func) {\n CodeMirror.prototype[name] = func\n}\nCodeMirror.defineDocExtension = function (name, func) {\n Doc.prototype[name] = func\n}\n\nCodeMirror.fromTextArea = fromTextArea\n\naddLegacyProps(CodeMirror)\n\nCodeMirror.version = \"5.28.0\"\n\nreturn CodeMirror;\n\n})));","/*!\n * clipboard.js v1.7.1\n * https://zenorocha.github.io/clipboard.js\n *\n * Licensed MIT © Zeno Rocha\n */\n(function(f){if(typeof exports===\"object\"&&typeof module!==\"undefined\"){module.exports=f()}else if(typeof define===\"function\"&&define.amd){define([],f)}else{var g;if(typeof window!==\"undefined\"){g=window}else if(typeof global!==\"undefined\"){g=global}else if(typeof self!==\"undefined\"){g=self}else{g=this}g.Clipboard = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o The syntax There are multiple syntaxes for this feature: The latter syntaxes support relative values preceded by This behaviour is reversed by the ungreedy ( Requires the For a list of values, see this MDN page. To edit a pattern you created, click its URL or double-click it in the list to load it, then open Save / Share to edit and save. After selecting a pattern, click its URL or double-click it in the list to load the full pattern. Or use the right arrow icon to load just the expression or text. Help make the Community better by rating patterns, and submitting your own via Search & Share in the menu. Created by Grant Skinner and the gskinner team, using the CreateJS & CodeMirror libraries. You can provide feedback or log bugs on GitHub. Browse through the RegEx Reference and test different tokens to see what they do, then check out Community Patterns to see examples. You can also Save your patterns for later reference, or to share with others. Sign In to ensure you don't lose your patterns. Modify your pattern's details, share it with the Community, or make it private, or delete it in Pattern Settings The buttons to the right allow you to switch RegEx engines, or edit the expression flags. Matches will be highlighted as you type. Roll over a match for information on the match and its capture groups. The match count and execution time are shown in the title bar. Lighter colored caps at the start or end of a line indicate the match continues between lines. A test can check if the pattern matches anything, matches everything, or matches nothing in the test text. Access this panel with the toggle at the top of the Text panel. When you save, both your Text and Tests will be saved. Tools provide different ways of working with or exploring your results. Matches in the Text panel are replaced by the substitution string & displayed as you type. Substitution tokens and escaped characters are supported, such as Roll over tokens for information, and check out the RegEx Reference for more information. You can specify either a simple delimiter (ex. Escaped characters are supported, such as Roll over tokens for information. Click on a highlighted match in the Text panel to display the details for that match. Roll over a group row to highlight that group in your Expression. Mouse over the explanation to highlight the related tokens in the Expression panel and vice versa. Click an item in the explanation to show more info in the RegEx Reference. Double-click a selected item in the RegEx Reference to insert it into your Expression. Click the arrow beside an example to load it. The menu also includes searchable Community Patterns, and patterns you've created or favorited in My Patterns. Signing in creates a permanent account, so you can access your patterns anywhere, anytime. Your existing patterns & favorites will automatically be assigned to the new account. We don't use your info for anything other than signing you into your RegExr account. RegExr currently supports JavaScript RegExp executed in your browser and PCRE via PHP. You can switch engines using the dropdown in Expression. Note that while implementations are mostly consistent, there are small variations between browsers. Here is a short list of known differences:Example
\n *\n * myObject.addEventListener(\"change\", createjs.proxy(myMethod, scope));\n *\n * @module CreateJS\n * @main CreateJS\n */\n\n\n/**\n * Contains properties and methods shared by all events for use with\n * {{#crossLink \"EventDispatcher\"}}{{/crossLink}}.\n * \n * Note that Event objects are often reused, so you should never\n * rely on an event object's state outside of the call stack it was received in.\n * @class Event\n * @param {String} type The event type.\n * @param {Boolean} bubbles Indicates whether the event will bubble through the display list.\n * @param {Boolean} cancelable Indicates whether the default behaviour of this event can be cancelled.\n * @constructor\n **/\nexport default class Event {\n\t\t\n\t\n\tconstructor(type, bubbles, cancelable) {\n\t// public properties:\n\t\t/**\n\t\t * The type of event.\n\t\t * @property type\n\t\t * @type String\n\t\t **/\n\t\tthis.type = type;\n\t\n\t\t/**\n\t\t * The object that generated an event.\n\t\t * @property target\n\t\t * @type Object\n\t\t * @default null\n\t\t * @readonly\n\t\t*/\n\t\tthis.target = null;\n\t\n\t\t/**\n\t\t * The current target that a bubbling event is being dispatched from. For non-bubbling events, this will\n\t\t * always be the same as target. For example, if childObj.parent = parentObj, and a bubbling event\n\t\t * is generated from childObj, then a listener on parentObj would receive the event with\n\t\t * target=childObj (the original target) and currentTarget=parentObj (where the listener was added).\n\t\t * @property currentTarget\n\t\t * @type Object\n\t\t * @default null\n\t\t * @readonly\n\t\t*/\n\t\tthis.currentTarget = null;\n\t\n\t\t/**\n\t\t * For bubbling events, this indicates the current event phase:\n\t\t * \t
\n\t\t * @property eventPhase\n\t\t * @type Number\n\t\t * @default 0\n\t\t * @readonly\n\t\t*/\n\t\tthis.eventPhase = 0;\n\t\n\t\t/**\n\t\t * Indicates whether the event will bubble through the display list.\n\t\t * @property bubbles\n\t\t * @type Boolean\n\t\t * @default false\n\t\t * @readonly\n\t\t*/\n\t\tthis.bubbles = !!bubbles;\n\t\n\t\t/**\n\t\t * Indicates whether the default behaviour of this event can be cancelled via\n\t\t * {{#crossLink \"Event/preventDefault\"}}{{/crossLink}}. This is set via the Event constructor.\n\t\t * @property cancelable\n\t\t * @type Boolean\n\t\t * @default false\n\t\t * @readonly\n\t\t*/\n\t\tthis.cancelable = !!cancelable;\n\t\n\t\t/**\n\t\t * The epoch time at which this event was created.\n\t\t * @property timeStamp\n\t\t * @type Number\n\t\t * @default 0\n\t\t * @readonly\n\t\t*/\n\t\tthis.timeStamp = (new Date()).getTime();\n\t\n\t\t/**\n\t\t * Indicates if {{#crossLink \"Event/preventDefault\"}}{{/crossLink}} has been called\n\t\t * on this event.\n\t\t * @property defaultPrevented\n\t\t * @type Boolean\n\t\t * @default false\n\t\t * @readonly\n\t\t*/\n\t\tthis.defaultPrevented = false;\n\t\n\t\t/**\n\t\t * Indicates if {{#crossLink \"Event/stopPropagation\"}}{{/crossLink}} or\n\t\t * {{#crossLink \"Event/stopImmediatePropagation\"}}{{/crossLink}} has been called on this event.\n\t\t * @property propagationStopped\n\t\t * @type Boolean\n\t\t * @default false\n\t\t * @readonly\n\t\t*/\n\t\tthis.propagationStopped = false;\n\t\n\t\t/**\n\t\t * Indicates if {{#crossLink \"Event/stopImmediatePropagation\"}}{{/crossLink}} has been called\n\t\t * on this event.\n\t\t * @property immediatePropagationStopped\n\t\t * @type Boolean\n\t\t * @default false\n\t\t * @readonly\n\t\t*/\n\t\tthis.immediatePropagationStopped = false;\n\t\t\n\t\t/**\n\t\t * Indicates if {{#crossLink \"Event/remove\"}}{{/crossLink}} has been called on this event.\n\t\t * @property removed\n\t\t * @type Boolean\n\t\t * @default false\n\t\t * @readonly\n\t\t*/\n\t\tthis.removed = false;\n\t}\n\n// public methods:\n\t/**\n\t * Sets {{#crossLink \"Event/defaultPrevented\"}}{{/crossLink}} to true if the event is cancelable.\n\t * Mirrors the DOM level 2 event standard. In general, cancelable events that have `preventDefault()` called will\n\t * cancel the default behaviour associated with the event.\n\t * @method preventDefault\n\t **/\n\tpreventDefault() {\n\t\tthis.defaultPrevented = this.cancelable&&true;\n\t};\n\n\t/**\n\t * Sets {{#crossLink \"Event/propagationStopped\"}}{{/crossLink}} to true.\n\t * Mirrors the DOM event standard.\n\t * @method stopPropagation\n\t **/\n\tstopPropagation() {\n\t\tthis.propagationStopped = true;\n\t};\n\n\t/**\n\t * Sets {{#crossLink \"Event/propagationStopped\"}}{{/crossLink}} and\n\t * {{#crossLink \"Event/immediatePropagationStopped\"}}{{/crossLink}} to true.\n\t * Mirrors the DOM event standard.\n\t * @method stopImmediatePropagation\n\t **/\n\tstopImmediatePropagation() {\n\t\tthis.immediatePropagationStopped = this.propagationStopped = true;\n\t};\n\t\n\t/**\n\t * Causes the active listener to be removed via removeEventListener();\n\t * \n\t * \t\tmyBtn.addEventListener(\"click\", function(evt) {\n\t * \t\t\t// do stuff...\n\t * \t\t\tevt.remove(); // removes this listener.\n\t * \t\t});\n\t * \n\t * @method remove\n\t **/\n\tremove() {\n\t\tthis.removed = true;\n\t};\n\t\n\t/**\n\t * Returns a clone of the Event instance.\n\t * @method clone\n\t * @return {Event} a clone of the Event instance.\n\t **/\n\tclone() {\n\t\treturn new Event(this.type, this.bubbles, this.cancelable);\n\t};\n\t\n\t/**\n\t * Provides a chainable shortcut method for setting a number of properties on the instance.\n\t *\n\t * @method set\n\t * @param {Object} props A generic object containing properties to copy to the instance.\n\t * @return {Event} Returns the instance the method is called on (useful for chaining calls.)\n\t * @chainable\n\t*/\n\tset(props) {\n\t\tfor (let n in props) { this[n] = props[n]; }\n\t\treturn this;\n\t};\n\n\t/**\n\t * Returns a string representation of this object.\n\t * @method toString\n\t * @return {String} a string representation of the instance.\n\t **/\n\ttoString() {\n\t\treturn \"[Event (type=\"+this.type+\")]\";\n\t};\n}\n","/*\n* EventDispatcher\n* Visit http://createjs.com/ for documentation, updates and examples.\n*\n* Copyright (c) 2010 gskinner.com, inc.\n*\n* Permission is hereby granted, free of charge, to any person\n* obtaining a copy of this software and associated documentation\n* files (the \"Software\"), to deal in the Software without\n* restriction, including without limitation the rights to use,\n* copy, modify, merge, publish, distribute, sublicense, and/or sell\n* copies of the Software, and to permit persons to whom the\n* Software is furnished to do so, subject to the following\n* conditions:\n*\n* The above copyright notice and this permission notice shall be\n* included in all copies or substantial portions of the Software.\n*\n* THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES\n* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\n* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT\n* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,\n* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR\n* OTHER DEALINGS IN THE SOFTWARE.\n*/\n\n\n\n// constructor:\n/**\n* EventDispatcher provides methods for managing queues of event listeners and dispatching events.\n*\n* You can either extend EventDispatcher or mix its methods into an existing prototype or instance by using the\n* EventDispatcher {{#crossLink \"EventDispatcher/initialize\"}}{{/crossLink}} method.\n* \n* Together with the CreateJS Event class, EventDispatcher provides an extended event model that is based on the\n* DOM Level 2 event model, including addEventListener, removeEventListener, and dispatchEvent. It supports\n* bubbling / capture, preventDefault, stopPropagation, stopImmediatePropagation, and handleEvent.\n* \n* EventDispatcher also exposes a {{#crossLink \"EventDispatcher/on\"}}{{/crossLink}} method, which makes it easier\n* to create scoped listeners, listeners that only run once, and listeners with associated arbitrary data. The \n* {{#crossLink \"EventDispatcher/off\"}}{{/crossLink}} method is merely an alias to\n* {{#crossLink \"EventDispatcher/removeEventListener\"}}{{/crossLink}}.\n* \n* Another addition to the DOM Level 2 model is the {{#crossLink \"EventDispatcher/removeAllEventListeners\"}}{{/crossLink}}\n* method, which can be used to listeners for all events, or listeners for a specific event. The Event object also \n* includes a {{#crossLink \"Event/remove\"}}{{/crossLink}} method which removes the active listener.\n*\n* Example
\n* Add EventDispatcher capabilities to the \"MyClass\" class.\n*\n* EventDispatcher.initialize(MyClass.prototype);\n*\n* Add an event (see {{#crossLink \"EventDispatcher/addEventListener\"}}{{/crossLink}}).\n*\n* instance.addEventListener(\"eventName\", handlerMethod);\n* function handlerMethod(event) {\n* console.log(event.target + \" Was Clicked\");\n* }\n*\n* Maintaining proper scope
\n* Scope (ie. \"this\") can be be a challenge with events. Using the {{#crossLink \"EventDispatcher/on\"}}{{/crossLink}}\n* method to subscribe to events simplifies this.\n*\n* instance.addEventListener(\"click\", function(event) {\n* console.log(instance == this); // false, scope is ambiguous.\n* });\n* \n* instance.on(\"click\", function(event) {\n* console.log(instance == this); // true, \"on\" uses dispatcher scope by default.\n* });\n* \n* If you want to use addEventListener instead, you may want to use function.bind() or a similar proxy to manage\n* scope.\n*\n* Browser support\n* The event model in CreateJS can be used separately from the suite in any project, however the inheritance model\n* requires modern browsers (IE9+).\n* \n*\n* @class EventDispatcher\n* @constructor\n**/\nimport Event from \"./Event.js\";\n\nexport default class EventDispatcher {\n\t\n\tconstructor() {\n\t// private properties:\n\t\t/**\n\t\t * @protected\n\t\t * @property _listeners\n\t\t * @type Object\n\t\t **/\n\t\tthis._listeners = null;\n\t\t\n\t\t/**\n\t\t * @protected\n\t\t * @property _captureListeners\n\t\t * @type Object\n\t\t **/\n\t\tthis._captureListeners = null;\n\t\t\n\t\t\n\t\t/**\n\t\t * A shortcut to the removeEventListener method, with the same parameters and return value. This is a companion to the\n\t\t * .on method.\n\t\t * \n\t\t * IMPORTANT: To remove a listener added with `on`, you must pass in the returned wrapper function as the listener. See \n\t\t * {{#crossLink \"EventDispatcher/on\"}}{{/crossLink}} for an example.\n\t\t *\n\t\t * @method off\n\t\t * @param {String} type The string type of the event.\n\t\t * @param {Function | Object} listener The listener function or object.\n\t\t * @param {Boolean} [useCapture] For events that bubble, indicates whether to listen for the event in the capture or bubbling/target phase.\n\t\t **/\n\t\t this.off = this.removeEventListener;\n\t}\n\t\n\t\n// static public methods:\n\t/**\n\t * Static initializer to mix EventDispatcher methods into a target object or prototype.\n\t * \n\t * \t\tEventDispatcher.initialize(MyClass.prototype); // add to the prototype of the class\n\t * \t\tEventDispatcher.initialize(myObject); // add to a specific instance\n\t * \n\t * @method initialize\n\t * @static\n\t * @param {Object} target The target object to inject EventDispatcher methods into. This can be an instance or a\n\t * prototype.\n\t **/\n\tstatic EventDispatcher(target) {\n\t\ttarget.addEventListener = p.addEventListener;\n\t\ttarget.on = p.on;\n\t\ttarget.removeEventListener = target.off = p.removeEventListener;\n\t\ttarget.removeAllEventListeners = p.removeAllEventListeners;\n\t\ttarget.hasEventListener = p.hasEventListener;\n\t\ttarget.dispatchEvent = p.dispatchEvent;\n\t\ttarget._dispatchEvent = p._dispatchEvent;\n\t\ttarget.willTrigger = p.willTrigger;\n\t};\n\t\n\n// public methods:\n\t/**\n\t * Adds the specified event listener. Note that adding multiple listeners to the same function will result in\n\t * multiple callbacks getting fired.\n\t *\n\t * Example
\n\t *\n\t * displayObject.addEventListener(\"click\", handleClick);\n\t * function handleClick(event) {\n\t * // Click happened.\n\t * }\n\t *\n\t * @method addEventListener\n\t * @param {String} type The string type of the event.\n\t * @param {Function | Object} listener An object with a handleEvent method, or a function that will be called when\n\t * the event is dispatched.\n\t * @param {Boolean} [useCapture] For events that bubble, indicates whether to listen for the event in the capture or bubbling/target phase.\n\t * @return {Function | Object} Returns the listener for chaining or assignment.\n\t **/\n\taddEventListener(type, listener, useCapture) {\n\t\tlet listeners;\n\t\tif (useCapture) {\n\t\t\tlisteners = this._captureListeners = this._captureListeners||{};\n\t\t} else {\n\t\t\tlisteners = this._listeners = this._listeners||{};\n\t\t}\n\t\tlet arr = listeners[type];\n\t\tif (arr) { this.removeEventListener(type, listener, useCapture); }\n\t\tarr = listeners[type]; // remove may have deleted the array\n\t\tif (!arr) { listeners[type] = [listener]; }\n\t\telse { arr.push(listener); }\n\t\treturn listener;\n\t};\n\t\n\t/**\n\t * A shortcut method for using addEventListener that makes it easier to specify an execution scope, have a listener\n\t * only run once, associate arbitrary data with the listener, and remove the listener.\n\t * \n\t * This method works by creating an anonymous wrapper function and subscribing it with addEventListener.\n\t * The wrapper function is returned for use with `removeEventListener` (or `off`).\n\t * \n\t * IMPORTANT: To remove a listener added with `on`, you must pass in the returned wrapper function as the listener, or use\n\t * {{#crossLink \"Event/remove\"}}{{/crossLink}}. Likewise, each time you call `on` a NEW wrapper function is subscribed, so multiple calls\n\t * to `on` with the same params will create multiple listeners.\n\t * \n\t * Example
\n\t * \n\t * \t\tvar listener = myBtn.on(\"click\", handleClick, null, false, {count:3});\n\t * \t\tfunction handleClick(evt, data) {\n\t * \t\t\tdata.count -= 1;\n\t * \t\t\tconsole.log(this == myBtn); // true - scope defaults to the dispatcher\n\t * \t\t\tif (data.count == 0) {\n\t * \t\t\t\talert(\"clicked 3 times!\");\n\t * \t\t\t\tmyBtn.off(\"click\", listener);\n\t * \t\t\t\t// alternately: evt.remove();\n\t * \t\t\t}\n\t * \t\t}\n\t * \n\t * @method on\n\t * @param {String} type The string type of the event.\n\t * @param {Function | Object} listener An object with a handleEvent method, or a function that will be called when\n\t * the event is dispatched.\n\t * @param {Object} [scope] The scope to execute the listener in. Defaults to the dispatcher/currentTarget for function listeners, and to the listener itself for object listeners (ie. using handleEvent).\n\t * @param {Boolean} [once=false] If true, the listener will remove itself after the first time it is triggered.\n\t * @param {*} [data] Arbitrary data that will be included as the second parameter when the listener is called.\n\t * @param {Boolean} [useCapture=false] For events that bubble, indicates whether to listen for the event in the capture or bubbling/target phase.\n\t * @return {Function} Returns the anonymous function that was created and assigned as the listener. This is needed to remove the listener later using .removeEventListener.\n\t **/\n\ton(type, listener, scope, once, data, useCapture) {\n\t\tif (listener.handleEvent) {\n\t\t\tscope = scope||listener;\n\t\t\tlistener = listener.handleEvent;\n\t\t}\n\t\tscope = scope||this;\n\t\treturn this.addEventListener(type, function(evt) {\n\t\t\t\tlistener.call(scope, evt, data);\n\t\t\t\tonce&&evt.remove();\n\t\t\t}, useCapture);\n\t};\n\n\t/**\n\t * Removes the specified event listener.\n\t *\n\t * Important Note: that you must pass the exact function reference used when the event was added. If a proxy\n\t * function, or function closure is used as the callback, the proxy/closure reference must be used - a new proxy or\n\t * closure will not work.\n\t *\n\t * Example
\n\t *\n\t * displayObject.removeEventListener(\"click\", handleClick);\n\t *\n\t * @method removeEventListener\n\t * @param {String} type The string type of the event.\n\t * @param {Function | Object} listener The listener function or object.\n\t * @param {Boolean} [useCapture] For events that bubble, indicates whether to listen for the event in the capture or bubbling/target phase.\n\t **/\n\tremoveEventListener(type, listener, useCapture) {\n\t\tlet listeners = useCapture ? this._captureListeners : this._listeners;\n\t\tif (!listeners) { return; }\n\t\tlet arr = listeners[type];\n\t\tif (!arr) { return; }\n\t\tfor (let i=0,l=arr.length; iExample
\n\t *\n\t * // Use a string event\n\t * this.dispatchEvent(\"complete\");\n\t *\n\t * // Use an Event instance\n\t * var event = new Event(\"progress\");\n\t * this.dispatchEvent(event);\n\t *\n\t * @method dispatchEvent\n\t * @param {Object | String | Event} eventObj An object with a \"type\" property, or a string type.\n\t * While a generic object will work, it is recommended to use a CreateJS Event instance. If a string is used,\n\t * dispatchEvent will construct an Event instance if necessary with the specified type. This latter approach can\n\t * be used to avoid event object instantiation for non-bubbling events that may not have any listeners.\n\t * @param {Boolean} [bubbles] Specifies the `bubbles` value when a string was passed to eventObj.\n\t * @param {Boolean} [cancelable] Specifies the `cancelable` value when a string was passed to eventObj.\n\t * @return {Boolean} Returns false if `preventDefault()` was called on a cancelable event, true otherwise.\n\t **/\n\tdispatchEvent(eventObj, bubbles, cancelable) {\n\t\tif (typeof eventObj == \"string\") {\n\t\t\t// skip everything if there's no listeners and it doesn't bubble:\n\t\t\tlet listeners = this._listeners;\n\t\t\tif (!bubbles && (!listeners || !listeners[eventObj])) { return true; }\n\t\t\teventObj = new Event(eventObj, bubbles, cancelable);\n\t\t} else if (eventObj.target && eventObj.clone) {\n\t\t\t// redispatching an active event object, so clone it:\n\t\t\teventObj = eventObj.clone();\n\t\t}\n\t\t\n\t\t// TODO: it would be nice to eliminate this. Maybe in favour of evtObj instanceof Event? Or !!evtObj.createEvent\n\t\ttry { eventObj.target = this; } catch (e) {} // try/catch allows redispatching of native events\n\n\t\tif (!eventObj.bubbles || !this.parent) {\n\t\t\tthis._dispatchEvent(eventObj, 2);\n\t\t} else {\n\t\t\tlet top=this, list=[top];\n\t\t\twhile (top.parent) { list.push(top = top.parent); }\n\t\t\tlet i, l=list.length;\n\n\t\t\t// capture & atTarget\n\t\t\tfor (i=l-1; i>=0 && !eventObj.propagationStopped; i--) {\n\t\t\t\tlist[i]._dispatchEvent(eventObj, 1+(i==0));\n\t\t\t}\n\t\t\t// bubbling\n\t\t\tfor (i=1; i\\\\o{FFF}
is also supported.\\\\1
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\";\n\t\t\t}\n\t\t\tlet l = this._tests.length;\n\t\t\tif (this.mode === \"tests\") {\n\t\t\t\tif (this._tests.length === 0) {\n\t\t\t\t\tstr += \"Use the 'Add Test' button to create a new test.\";\n\t\t\t\t} else if (this._testFails) {\n\t\t\t\t\tstr += this._testFails+\" out of \"+l+\" tests failed.\";\n\t\t\t\t} else {\n\t\t\t\t\tstr += \"All \"+l+\" tests passed.\";\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tstr += (l||\"No\")+\" match\"+(l>1?\"es\":\"\")+\" found in \"+this.value.length+\" characters\";\n\t\t\t\tstr += this._emptyCount ? \", including \"+this._emptyCount+\" empty matches (* not displayed).\" : \".\";\n\t\t\t\tlet cm = this.editor, sel = cm.listSelections()[0], pos = sel.head;\n\t\t\t\tlet i0 = cm.indexFromPos(pos), i1=cm.indexFromPos(sel.anchor), range=Math.abs(i0-i1);\n\t\t\t\tstr += \"
Insertion point: line \"+pos.line+\", col \"+pos.ch+\", index \"+i0;\n\t\t\t\tstr += (range>0 ? \" (\"+range+\" character\"+(range===1?\"\":\"s\")+\" selected)\" : \"\");\n\t\t\t}\n\t\t\t\n\t\t}\n\t\ttt.showOn(\"result\", str, this.resultEl, false, -2);\n\t}\n\n\t_updateEmptyCount() {\n\t\tlet result = this._result, matches = result && result.matches;\n\t\tthis._emptyCount = matches ? matches.reduce((v,o)=>v+(o.l?0:1),0) : 0;\n\t}\n\n\t_errorText(err) {\n\t\treturn err.message || app.reference.getError(err);\n\t}\n\t\n\t_handleResize(w, h) {\n\t\tlet canvas = this.canvas, style=canvas.style;\n\t\tstyle.visibility = style.opacity = \"\";\n\t\tcanvas.width = w;\n\t\tcanvas.height = h;\n\t\tthis.editor.refresh();\n\t\tthis._deferUpdate();\n\t}\n\n// Test mode:\n\t_initTestUI(el) {\n\t\tconst types = [\n\t\t\t{id:\"all\", label:\"Match Full\"},\n\t\t\t{id:\"any\", label:\"Match Any\"},\n\t\t\t// {id:\"start\", label:\"Match Start\"},\n\t\t\t{id:\"none\", label:\"Match None\"},\n\t\t];\n\t\tthis.typeLabels = types.reduce((o, t) => { o[t.id] = t.label; return o; }, {});\n\n\t\tthis.testsEl = $.query(\".tests\", el);\n\t\tthis.testItemEl = $.query(\"#library > #tests_item\");\n\t\tthis.testListEl = $.query(\".list\", this.testsEl);\n\t\tthis.testList = new List(this.testListEl, {template:(o) => this._testItemTemplate(o)});\n\t\tthis.testList.scrollEl = this.testsEl;\n\n\t\tthis.testList.on(\"change\", (evt) => this._handleTestChange(evt));\n\n\t\t$.on($.queryAll(\".button.add\", el), \"click\", ()=>this._addTest());\n\n\t\tconst template = $.template` ${\"label\"}`;\n\t\tthis.typesEl = $.query(\"#library #tooltip-testtypes\");\n\t\tthis.typesList = new List($.query(\"ul.list\", this.typesEl), {data:types, template});\n\t\tthis.typesList.on(\"change\", ()=> this._handleTypesChange());\n\n\t\tthis.tests = null;\n\t}\n\n\t_updateTests() {\n\t\tlet result = this._result;\n\t\tif (result.error) { return this._showResult(); }\n\n\t\tlet data = this._tests, l=data.length;\n\t\tif (!data || !l) { return this._showResult(\"No tests.\"); }\n\t\t\n\t\tlet matches = result.matches.reduce((o, t) => { o[t.id] = t; return o; }, {}), fails=0;\n\t\tfor (let i=0; i\"+content+\"
\";\n\t\t\tif (!token.open) { content += app.reference.tipForToken(token); }\n\t\t\telse { content += \" \"; }\n\t\t\tlet div = $.create(\"div\", null, content, el);\n\t\t\t\n\t\t\tif (token.close) {\n\t\t\t\tclassName = groupClasses[token.clss || token.type];\n\t\t\t\tif (className) {\n\t\t\t\t\tclassName = className.replace(\"%depth%\", Math.min(4,token.depth));\n\t\t\t\t\t$.addClass(div, className);\n\t\t\t\t}\n\t\t\t\tif (token.depth > 3) {\n\t\t\t\t\tdiv.innerHTML = \"So... you wanted to see what would happen if you just kept nesting groups, eh? Well, this is it.\"+\n\t\t\t\t\t\t\" I was going to reward your curiosity with a RegEx joke, but a quick search on google reveals that not even\"+\n\t\t\t\t\t\t\" the collective wisdom of the internet can make regular expressions funny. Well, except the whole 'now you've got two problems'\"+\n\t\t\t\t\t\t\" shtick, but you've probably heard that one already. Wasn't really worth the effort, was it?\";\n\t\t\t\t\ttoken = token.close.prv;\n\t\t\t\t\tthis._divs.push(div);\n\t\t\t\t\tel = div;\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\t\t\t\tel = div;\n\t\t\t}\n\t\t\t\n\t\t\tdiv.token = token;\n\t\n\t\t\tif (token.open) {\n\t\t\t\t$.addClass(div, \"close\");\n\t\t\t\tdiv.proxy = el;\n\t\t\t\tel = el.parentNode;\n\t\t\t}\n\t\n\t\t\tif (token.error) {\n\t\t\t\t$.addClass(div, \"error\");\n\t\t\t\tif (token.error.warning) { $.addClass(div, \"warning\"); }\n\t\t\t}\n\t\n\t\t\tif (!token.open) {\n\t\t\t\tdiv.addEventListener(\"mouseover\", this._handleMouseEvent);\n\t\t\t\tdiv.addEventListener(\"mouseout\", this._handleMouseEvent);\n\t\t\t\tdiv.addEventListener(\"click\", this._handleMouseEvent);\n\t\t\t}\n\t\t\t\n\t\t\tif (token.clss === \"quant\" || token.type === \"lazy\" || token.type === \"possessive\") {\n\t\t\t\tthis._insertApplied(div);\n\t\t\t} else {\n\t\t\t\tthis._divs.push(div);\n\t\t\t}\n\t\t}\n\t}\n\n\t_insertApplied(div) {\n\t\tlet divs = this._divs, prv = div.token.prv, d, i=divs.length;\n\t\twhile ((d = divs[--i]) && d.token !== prv) {} // search backwards for efficiency\n\t\td = d.proxy||d;\n\t\tdivs.splice(i, 0, div);\n\t\td.insertAdjacentElement(\"afterend\", div);\n\t\t$.addClass(div, \"applied\");\n\t}\n\n\t_handleHoverChange() {\n\t\tlet token = app.expression.highlighter.hoverToken;\n\t\t$.removeClass($.queryAll(\"div.selected\", this.el), \"selected\");\n\t\t$.removeClass($.queryAll(\"div.related\", this.el), \"related\");\n\t\tif (!token) { return; }\n\t\t\n\t\tlet div = this._findDiv(token);\n\t\t$.addClass(div, \"selected\");\n\t\tif (token.related) {\n\t\t\tfor (let i = 0, l=token.related.length; i < l; i++) {\n\t\t\t\t$.addClass(this._findDiv(token.related[i]), \"related\");\n\t\t\t}\n\t\t}\n\t}\n\t\n\t_findDiv(token) {\n\t\treturn Utils.find(this._divs, (div) => div.token === token);\n\t}\n\n\t_handleMouseEvent(evt) {\n\t\tlet type = evt.type, token = evt.currentTarget.token;\n\t\tif (type == \"click\") { app.sidebar.showToken(token); }\n\t\telse { app.expression.highlighter.hoverToken = type === \"mouseout\" ? null : token; }\n\t\tevt.stopPropagation();\n\t}\n\t\n\t_handleEvent(evt) {\n\t\tif (evt.type === \"change\") { this._update(); }\n\t\telse if (evt.type === \"hover\") { this._handleHoverChange(); }\n\t}\n}","/*\nRegExr: Learn, Build, & Test RegEx\nCopyright (C) 2017 gskinner.com, inc.\n\nThis program is free software: you can redistribute it and/or modify\nit under the terms of the GNU General Public License as published by\nthe Free Software Foundation, either version 3 of the License, or\n(at your option) any later version.\n\nThis program is distributed in the hope that it will be useful,\nbut WITHOUT ANY WARRANTY; without even the implied warranty of\nMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\nGNU General Public License for more details.\n\nYou should have received a copy of the GNU General Public License\nalong with this program. If not, see Group
row to highlight it in the Expression.\", this.el);\n\t\tthis._addMatch(app.text.selectedMatch, app.text.value);\n\t}\n\t\n\t_addMatch(match, textVal) {\n\t\tif (!match) { return; }\n\t\tlet groups = match.groups, l=groups&&groups.length, ext=l&&(groups[0].i != null), matchVal=this._getMatchVal(match, textVal), extStr=\"\", me = match.i+match.l;\n\t\tlet groupTokens = app.expression.lexer.captureGroups;\n\t\t\n\t\tlet tableEl = $.create(\"table\", null, null, this.el);\n\t\tlet matchEl = $.create(\"tr\", \"match\", \"Match \"+match.num+\" \"+this._getRangeStr(match)+\" \", tableEl);\n\t\t\n\t\tif (l) {\n\t\t\tlet inGroups = [], lastIndex = match.i;\n\t\t\tfor (let i = 0; i <= l; i++) {\n\t\t\t\tlet group = groups[i], index = group ? group.i : me, num = i + 1, token = groupTokens[i];\n\t\t\t\tif (ext) {\n\t\t\t\t\tfor (let j = inGroups.length - 1; j >= 0; j--) {\n\t\t\t\t\t\tlet inGroup = inGroups[j], ge = inGroup.i + inGroup.l;\n\t\t\t\t\t\tif (ge > index) { break; }\n\t\t\t\t\t\tinGroups.pop();\n\t\t\t\t\t\textStr += Utils.htmlSafe(textVal.substring(lastIndex, ge)) + \"\";\n\t\t\t\t\t\tlastIndex = ge;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tif (!group) { break; }\n\t\t\t\tif (group.l) {\n\t\t\t\t\textStr += Utils.htmlSafe(textVal.substring(lastIndex, index)) + \"\";\n\t\t\t\t\tinGroups.push(group);\n\t\t\t\t\tlastIndex = index;\n\t\t\t\t}\n\t\t\t\tlet val = \"\" + this._getMatchVal(group, textVal) + \"\";\n\t\t\t\tlet label = token.name ? \"'\"+token.name+\"'\" : (\"Group \" + num);\n\t\t\t\tlet tr = $.create(\"tr\", \"group\", \" \" + label + \" \" + this._getRangeStr(group) + \" \" + val + \" \", tableEl);\n\t\t\t\t\n\t\t\t\ttr.token = token;\n\t\t\t\ttr.addEventListener(\"mouseover\", this._handleMouseEvent);\n\t\t\t\ttr.addEventListener(\"mouseout\", this._handleMouseEvent);\n\t\t\t}\n\t\t\tif (ext) { extStr += Utils.htmlSafe(textVal.substring(lastIndex, me)); }\n\t\t} else {\n\t\t\t$.create(\"tr\", \"nogroup\", \"No groups. \", tableEl);\n\t\t}\n\t\t\n\t\t$.query(\"td:last-child\", matchEl).innerHTML = extStr || matchVal;\n\t}\n\t\n\t_getMatchVal(match, str) {\n\t\tlet val = match.s || (match.i === undefined ? \"\" : str.substr(match.i, match.l));\n\t\treturn val ? Utils.htmlSafe(val) : \"<empty>\";\n\t}\n\t\n\t_getRangeStr(match) {\n\t\t// we could check for match.l>0 to catch empty matches, but having a weird range might be more accurate.\n\t\treturn match.i != null ? match.i + \"-\" + (match.i+match.l-1) : \"n/a\";\n\t}\n\n\t_handleEvent(evt) {\n\t\tUtils.defer(()=>this._update(), \"Details._update\");\n\t}\n\t\n\t_handleMouseEvent(evt) {\n\t\tlet type = evt.type, token = evt.currentTarget.token;\n\t\tapp.expression.highlighter.hoverToken = type === \"mouseout\" ? null : token;\n\t\tif (type === \"mouseover\") { $.addClass($.query(\"span.num-\"+token.num, this.el), \"hover\"); }\n\t\telse { $.removeClass($.query(\"span.hover\", this.el), \"hover\"); }\n\t\tevt.stopPropagation();\n\t}\n}","/*\nRegExr: Learn, Build, & Test RegEx\nCopyright (C) 2017 gskinner.com, inc.\n\nThis program is free software: you can redistribute it and/or modify\nit under the terms of the GNU General Public License as published by\nthe Free Software Foundation, either version 3 of the License, or\n(at your option) any later version.\n\nThis program is distributed in the hope that it will be useful,\nbut WITHOUT ANY WARRANTY; without even the implied warranty of\nMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\nGNU General Public License for more details.\n\nYou should have received a copy of the GNU General Public License\nalong with this program. If not, see \\\\n
, \\\\t
& \\\\u0009
.,
or \\\\n
), or use substitution tokens to generate more advanced reports. For example, $1\\\\n
would list all group 1 results (in the JavaScript engine).\\\\n
, \\\\t
& \\\\u0009
.RegExp.exec()
.\"+\n\t\t\t\t\"\"+\n\t\t\t\t\"
The following query string params are recognized:
engine
- the RegEx engine to use (js
or pcre
)expression
- populates the Expression area. It is recommended to pass a full expression with flags (/.*/ig
) not just the pattern (.*
)text
- populates the Text areatool
- sets the tool (replace, list, details, or explain)input
- populates the tool input field\" + Utils.htmlSafe(exp) + \"
\";\n\t\t\tif (txt && regex) {\n\t\t\t\tlet over=Math.max(0, txt.length-160), s=txt;\n\t\t\t\tif (over) { s = Utils.htmlSafe(s.substr(0,159)); }\n\t\t\t\tif (regex) { s = s.replace(regex, \"$&\"); }\n\t\t\t\t// TODO: this won't match on html elements:\n\t\t\t\tstr += \"\" + s + (over?\"\\u2026\" : \"\") + \"
\";\n\t\t\t}\n\t\t}\n\t\tthis.el.innerHTML = str;\n\t\tif (exp) {\n\t\t\t$.query(\"code.expression > .load\", this.el).addEventListener(\"click\", ()=> {\n\t\t\t\t// TODO: this will need to be updated when we support other delimiters:\n\t\t\t\tapp.expression.value = exp[0] === \"/\" ? exp : \"/\"+exp+\"/g\";\n\t\t\t});\n\t\t\t\n\t\t}\n\t\tif (txt) { $.query(\"code.text > .load\", this.el).addEventListener(\"click\", ()=> app.text.value = txt); }\n\t}\n\t\n\n}","/*\nRegExr: Learn, Build, & Test RegEx\nCopyright (C) 2017 gskinner.com, inc.\n\nThis program is free software: you can redistribute it and/or modify\nit under the terms of the GNU General Public License as published by\nthe Free Software Foundation, either version 3 of the License, or\n(at your option) any later version.\n\nThis program is distributed in the hope that it will be useful,\nbut WITHOUT ANY WARRANTY; without even the implied warranty of\nMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\nGNU General Public License for more details.\n\nYou should have received a copy of the GNU General Public License\nalong with this program. If not, see \"+token.on+\"
\\\".\" : \"\")\n\t\tif (token.off) { str += \" Disable \\\"\"+token.off+\"
\\\".\"; }\n\t\treturn str;\n\t}\n\n\tgetInsensitive(token) {\n\t\tif (token.code) {\n\t\t\tlet chr = String.fromCharCode(token.code);\n\t\t\tif (chr.toLowerCase() === chr.toUpperCase()) { return \"\"; }\n\t\t}\n\t\treturn token.modes ? `Case ${token.modes.i ? \"in\" : \"\"}sensitive.` : \"\";\n\t}\n\n\tgetDotAll(token) {\n\t\treturn (token.modes.s ? \"including\" : \"except\") + \" line breaks\";\n\t}\n\n\tgetLabel(token) {\n\t\tlet node = this.getNodeForToken(token);\n\t\treturn node ? node.label || node.id || \"\" : token.type;\n\t}\n\n\tgetDesc(token) {\n\t\treturn this.getVal(this.getNodeForToken(token), \"desc\");\n\t}\n\n\tgetLazy(token) {\n\t\treturn token.modes.U ? \"greedy\" : \"lazy\";\n\t}\n\n\tgetLazyFew(token) {\n\t\treturn token.modes.U ? \"many\" : \"few\";\n\t}\n\n\tgetPHPVersion() {\n\t\treturn this._config.PHPVersion;\n\t}\n\n\tgetPCREVersion() {\n\t\treturn this._config.PCREVersion;\n\t}\n\n\tgetCtrlKey() {\n\t\treturn Utils.getCtrlKey();\n\t}\n\n\tgetEscChars() {\n\t\tlet o = this._flavor.profile.escChars, str=\"\";\n\t\tfor (let n in o) { str += n; }\n\t\treturn str;\n\t}\n\n\t/*\n\tSearches for tags in the string in the format:\n\t`{{prop.prop}}` or `{{method(prop.prop)}}`\n\t\n\tThe first format will inject the specified property of the data object.\n\tFor example, `{{a.b}}` would inject the value of `data.a.b`.\n\t\n\tThe second will inject the results of calling the specified function on the functs object with a property of the data object as it's parameter (or the data object itself if empty).\n\tFor example, `{{myMethod(a.b)}}` would inject the return value of `functs.myMethod(data.a.b)`.\n\t\n\tCurrently only supports a single param.\n\t */\n\tfillTags(str, data, functs, maxLength=20, htmlSafe=true) {\n\t\tlet match;\n\t\twhile (match = str.match(/{{~?[\\w.()]+}}/)) {\n\t\t\tlet val, f, safe=false;\n\t\t\tval = match[0].substring(2, match[0].length - 2);\n\t\t\tif (val[0] === \"~\") {\n\t\t\t\tval = val.substr(1);\n\t\t\t\tsafe = true;\n\t\t\t}\n\t\t\tlet match2 = val.match(/\\([\\w.]*\\)/);\n\t\t\tif (match2) {\n\t\t\t\tf = val.substr(0, match2.index);\n\t\t\t\tval = match2[0].substring(1, match2[0].length - 1);\n\t\t\t} else {\n\t\t\t\tf = null;\n\t\t\t}\n\t\t\tlet o = data, arr = val.split(\".\");\n\t\t\tfor (let i = 0; i < arr.length; i++) {\n\t\t\t\tlet prop = arr[i];\n\t\t\t\tif (prop && o) { o = o[prop]; }\n\t\t\t}\n\t\t\tval = o;\n\t\t\tif (f) {\n\t\t\t\tif (functs[f]) { val = functs[f](val); }\n\t\t\t\telse { val = \" [\"+f+\"] \"; }\n\t\t\t}\n\t\t\tif (!safe && (maxLength || htmlSafe)) { val = Utils.shorten(val, maxLength, htmlSafe, \"i\"); }\n\t\t\tstr = str.replace(match[0], val);\n\t\t}\n\t\treturn str;\n\t}\n\t\n\t// returns doc props from the profile or reference as appropriate (ex. tip, desc, ext)\n\tgetVal(node, prop) {\n\t\tif (!node) { return \"\"; }\n\t\tlet pDocs = this._flavor.getDocs(node.id), pRef = (pDocs && pDocs[prop]);\n\t\tif (pRef != null && pRef[0] !== \"+\") { return pRef; }\n\t\tlet ref=(node&&node[prop])||\"\";\n\t\treturn pRef != null ? ref+pRef.substr(1) : ref;\n\t}\n\t\n\tgetNodeForToken(token) {\n\t\tlet id=this.idForToken(token), clss = token.clss;\n\t\t\n\t\t// Special cases:\n\t\tif (clss === \"quant\") { id = clss; }\n\t\tif (clss === \"esc\" && token.type !== \"escsequence\") { id = \"escchar\"; }\n\n\t\treturn this.getNode(id);\n\t}\n\n\tgetNode(id) {\n\t\tlet map=this._idMap, node = map[id]\n\t\twhile (node&&node.proxy) { node = map[node.proxy]; }\n\t\treturn node;\n\t}\n\t\n\tgetError(error, token) {\n\t\tlet errId = error && error.id;\n\t\tlet str = this._content.errors[errId] || \"no docs for error='\" + errId + \"'\";\n\t\tif (token) { str = this.fillTags(str, token, this, 20); }\n\t\treturn str;\n\t}\n\t\n\ttipForToken(token) {\n\t\tif (!token) { return null; }\n\n\t\tlet node = this.getNodeForToken(token), label, tip;\n\n\t\tif (token.error && !token.error.warning) {\n\t\t\tlabel = \"ERROR: \";\n\t\t\ttip = this.getError(token.error, token);\n\t\t} else {\n\t\t\tlabel = node ? node.label || node.id || \"\" : token.type;\n\t\t\ttip = this.getVal(node, \"tip\") || this.getVal(node, \"desc\");\n\t\t\ttip = this.fillTags(tip, token, this, 20);\n\t\t\tif (token.type === \"group\") { label += \" #\" + token.num; }\n\t\t\tlabel = \"\" + label[0].toUpperCase() + label.substr(1) + \". \";\n\n\t\t\tif (token.error) {\n\t\t\t\ttip += \"WARNING: \" + this.getError(token.error, token) + \"\";\n\t\t\t}\n\t\t}\n\t\t\n\t\treturn tip ? label + tip : \"no docs for id='\" + this.idForToken(token) + \"'\";\n\t}\n\t\n\tgetContent(id) {\n\t\tlet node = this.getNode(id);\n\t\treturn this.fillTags(this.getVal(node, \"desc\") + this.getVal(node, \"ext\"), node, this);\n\t}\n\t\n\t// TODO: this isn't necessarily the most ideal place for this method (has nothing to do with Reference). Maybe move into Text?\n\ttipForMatch(match, text) {\n\t\tif (!match) { return null; }\n\t\tlet more = match.l > 150;\n\t\tlet str = \"match: \" + Utils.shorten(text.substr(match.i, match.l), 150, true, \"i\") +\n\t\t\t\t \"\" + match.i + \"-\" + (match.i+match.l-1)+ \"
\";\n\t\t\n\t\tlet groups = match.groups, l = groups && groups.length;\n\t\tfor (let i = 0; i < l; i++) {\n\t\t\tif (i > 3 && l > 5) {\n\t\t\t\tmore = false;\n\t\t\t\tstr += \"Double-click an item in the list to insert it into your Expression.
\n\tClick the arrow beside an example to load it.
`;\n\no.kids = [\n\t{\n\tlabel: \"Character classes\",\n\tid: \"charclasses\",\n\tdesc: \"Character classes match a character from a specific set. There are a number of predefined character classes and you can also define your own sets.\",\n\tkids: [\n\t\t\n\t\t{\n\t\tid:\"set\",\n\t\tlabel: \"character set\",\n\t\tdesc:\"Match any character in the set.\",\n\t\texample:[\"[aeiou]\",\"glib jocks vex dwarves!\"],\n\t\ttoken:\"[ABC]\"\n\t\t},\n\t\t{\n\t\tid:\"setnot\",\n\t\tlabel: \"negated set\",\n\t\tdesc:\"Match any character that is not in the set.\",\n\t\texample:[\"[^aeiou]\",\"glib jocks vex dwarves!\"],\n\t\ttoken:\"[^ABC]\"\n\t\t},\n\t\t{\n\t\tid:\"range\",\n\t\ttip:\"Matches a character in the range {{getChar(prev)}} to {{getChar(next)}} (char code {{prev.code}} to {{next.code}}). {{getInsensitive()}}\",\n\t\texample:[\"[g-s]\",\"abcdefghijklmnopqrstuvwxyz\"],\n\t\tdesc: \"Matches a character having a character code between the two specified characters inclusive.\",\n\t\ttoken:\"[A-Z]\"\n\t\t},\n\t\t{\n\t\tid:\"posixcharclass\",\n\t\ttip:\"Matches any character in the '{{value}}' POSIX class.\",\n\t\tlabel:\"POSIX class\",\n\t\tdesc:\"Matches any character in the specified POSIX class. Must be in a character set. For example,[[:alnum:]$]
will match alphanumeric characters and $
.\",\n\t\text:\"For a list of classes, see the PCRE spec.
\",\n\t\ttoken:\"[:alnum:]\"\n\t\t},\n\t\t{\n\t\tid:\"dot\",\n\t\ttip:\"Matches any character {{getDotAll()}}.\",\n\t\tdesc:\"Matches any character except linebreaks.\",\n\t\text:\" Equivalent to[^\\\\n\\\\r]
.\",\n\t\texample:[\".\", \"glib jocks vex dwarves!\"],\n\t\ttoken:\".\"\n\t\t},\n\t\t{\n\t\tid:\"matchanyset\",\n\t\tlabel:\"match any\",\n\t\tdesc:\"A character set that can be used to match any character, including line breaks, without the dotall flag (s
).\"+\n\t\t\t\"An alternative is [^]
, but it is not supported in all browsers.
[A-Za-z0-9_]
\",\n\t\texample:[\"\\\\w\",\"bonjour, mon fr\\u00E8re\"],\n\t\ttoken:\"\\\\w\"\n\t\t},\n\t\t{\n\t\tid:\"notword\",\n\t\tlabel: \"not word\",\n\t\tdesc:\"Matches any character that is not a word character (alphanumeric & underscore).\",\n\t\text:\" Equivalent to [^A-Za-z0-9_]
\",\n\t\texample:[\"\\\\W\",\"bonjour, mon fr\\u00E8re\"],\n\t\ttoken:\"\\\\W\"\n\t\t},\n\t\t{\n\t\tid:\"digit\",\n\t\tdesc:\"Matches any digit character (0-9).\",\n\t\text:\" Equivalent to [0-9]
.\",\n\t\texample:[\"\\\\d\",\"+1-(444)-555-1234\"],\n\t\ttoken:\"\\\\d\"\n\t\t},\n\t\t{\n\t\tid:\"notdigit\",\n\t\tlabel: \"not digit\",\n\t\tdesc:\"Matches any character that is not a digit character (0-9).\",\n\t\text:\" Equivalent to [^0-9]
.\",\n\t\texample:[\"\\\\D\",\"+1-(444)-555-1234\"],\n\t\ttoken:\"\\\\D\"\n\t\t},\n\t\t{\n\t\tid:\"whitespace\",\n\t\tdesc:\"Matches any whitespace character (spaces, tabs, line breaks).\",\n\t\texample:[\"\\\\s\", \"glib jocks vex dwarves!\"],\n\t\ttoken:\"\\\\s\"\n\t\t},\n\t\t{\n\t\tid:\"notwhitespace\",\n\t\tlabel: \"not whitespace\",\n\t\tdesc:\"Matches any character that is not a whitespace character (spaces, tabs, line breaks).\",\n\t\texample:[\"\\\\S\", \"glib jocks vex dwarves!\"],\n\t\ttoken:\"\\\\S\"\n\t\t},\n\t\t{\n\t\tid:\"hwhitespace\",\n\t\tlabel:\"horizontal whitespace\",\n\t\tdesc:\"Matches any horizontal whitespace character (spaces, tabs).\",\n\t\ttoken:\"\\\\h\"\n\t\t},\n\t\t{\n\t\tid:\"nothwhitespace\",\n\t\tlabel: \"not horizontal whitespace\",\n\t\tdesc:\"Matches any character that is not a horizontal whitespace character (spaces, tabs).\",\n\t\ttoken:\"\\\\H\"\n\t\t},\n\t\t{\n\t\tid:\"vwhitespace\",\n\t\tlabel:\"vertical whitespace\",\n\t\tdesc:\"Matches any vertical whitespace character (line breaks).\",\n\t\ttoken:\"\\\\v\"\n\t\t},\n\t\t{\n\t\tid:\"notvwhitespace\",\n\t\tlabel: \"not vertical whitespace\",\n\t\tdesc:\"Matches any character that is not a vertical whitespace character (line breaks).\",\n\t\ttoken:\"\\\\V\"\n\t\t},\n\t\t{\n\t\tid:\"linebreak\",\n\t\tlabel:\"line break\",\n\t\tdesc:\"Matches any line break character, including the CRLF pair, and CR / LF individually.\",\n\t\ttoken:\"\\\\R\"\n\t\t},\n\t\t{\n\t\tid:\"notlinebreak\",\n\t\tlabel:\"not line break\",\n\t\tdesc:\"Matches any character that is not a line break.\",\n\t\text:\" Similar to dot (.
) but is unaffected by the dotall flag (s
).\",\n\t\ttoken:\"\\\\N\"\n\t\t},\n\t\t{\n\t\tid:\"unicodecat\",\n\t\ttip:\"Matches any character in the '{{getUniCat()}}' unicode category.\",\n\t\tlabel:\"unicode category\",\n\t\tdesc:\"Matches a character in the specified unicode category. For example, \\\\p{Ll}
will match any lowercase letter.\",\n\t\text:\"For a list of categories, see the PCRE spec.
\"+\n\t\t\t\"There are multiple syntaxes for this feature:
\\\\p{L}
\\\\pL
For a list of categories, see the PCRE spec.
\"+\n\t\t\t\"There are multiple syntaxes for this feature:
\\\\P{L}
\\\\p{^L}
\\\\PL
\\\\p{Arabic}
will match characters in the Arabic script.\",\n\t\text:\"For a list of scripts, see the PCRE spec.
\",\n\t\ttoken:\"\\\\p{Han}\"\n\t\t},\n\t\t{\n\t\tid:\"notunicodescript\",\n\t\ttip:\"Matches any character that is not in the '{{value}}' unicode script.\",\n\t\tlabel:\"not unicode script\",\n\t\tdesc:\"Matches any character that is not in the specified unicode script.\",\n\t\text:\"For a list of scripts, see the PCRE spec.
\"+\n\t\t\t\"There are multiple syntaxes for this feature:
\\\\P{Han}
\\\\p{^Han}
\",\n\t\ttoken:\"\\\\P{Han}\"\n\t\t}\n\t]\n\t},\n\n\t{\n\tlabel:\"Anchors\",\n\tid:\"anchors\",\n\tdesc:\"Anchors are unique in that they match a position within a string, not a character.\",\n\tkids:[\n\t\t{\n\t\tid:\"bos\",\n\t\tlabel:\"beginning of string\",\n\t\tdesc:\"Matches the beginning of the string.\",\n\t\text:\" Unlike ^
, this is unaffected by the multiline flag (m
). This matches a position, not a character.\",\n\t\ttoken:\"\\\\A\"\n\t\t},\n\t\t{\n\t\tid:\"eos\",\n\t\tlabel:\"end of string\",\n\t\tdesc:\"Matches the end of the string.\",\n\t\text:\" Unlike $
, this is unaffected by the multiline flag (m
). This matches a position, not a character.\",\n\t\ttoken:\"\\\\Z\"\n\t\t},\n\t\t{\n\t\tid:\"abseos\",\n\t\tlabel:\"strict end of string\",\n\t\tdesc:\"Matches the end of the string. Unlike $
or \\\\Z
, it does not allow for a trailing newline.\",\n\t\text:\" This is unaffected by the multiline flag (m
). This matches a position, not a character.\",\n\t\ttoken:\"\\\\z\"\n\t\t},\n\t\t{\n\t\tid:\"bof\",\n\t\tlabel:\"beginning\",\n\t\tdesc:\"Matches the beginning of the string, or the beginning of a line if the multiline flag (m
) is enabled.\",\n\t\text:\" This matches a position, not a character.\",\n\t\texample:[\"^\\\\w+\",\"she sells seashells\"],\n\t\ttoken:\"^\"\n\t\t},\n\t\t{\n\t\tid:\"eof\",\n\t\tlabel:\"end\",\n\t\tdesc:\"Matches the end of the string, or the end of a line if the multiline flag (m
) is enabled.\",\n\t\text:\" This matches a position, not a character.\",\n\t\texample:[\"\\\\w+$\",\"she sells seashells\"],\n\t\ttoken:\"$\"\n\t\t},\n\t\t{\n\t\tid:\"wordboundary\",\n\t\tlabel:\"word boundary\",\n\t\tdesc:\"Matches a word boundary position between a word character and non-word character or position (start / end of string).\",\n\t\text:\" See the word character class (\\w
) for more info.\",\n\t\texample:[\"s\\\\b\",\"she sells seashells\"],\n\t\ttoken:\"\\\\b\"\n\t\t},\n\t\t{\n\t\tid:\"notwordboundary\",\n\t\tlabel: \"not word boundary\",\n\t\tdesc:\"Matches any position that is not a word boundary.\",\n\t\text:\" This matches a position, not a character.\",\n\t\texample:[\"s\\\\B\",\"she sells seashells\"],\n\t\ttoken:\"\\\\B\"\n\t\t},\n\t\t{\n\t\tid:\"prevmatchend\",\n\t\tlabel: \"previous match end\",\n\t\tdesc:\"Matches the end position of the previous match.\",\n\t\text:\" This matches a position, not a character.\",\n\t\ttoken:\"\\\\G\"\n\t\t}\n\t]\n\t},\n\t\n\t{\n\tlabel: \"Escaped characters\",\n\tid:\"escchars\",\n\tdesc: \"Escape sequences can be used to insert reserved, special, and unicode characters. All escaped characters begin with the \\\\
character.\",\n\tkids: [\n\t\t{\n\t\tid:\"reservedchar\",\n\t\tlabel:\"reserved characters\",\n\t\tdesc:\"The following character have special meaning, and should be preceded by a \\\\
(backslash) to represent a literal character:\"+\n\t\t\t\"
{{getEscChars()}}
Within a character set, only \\\\
, -
, and ]
need to be escaped.
\\\\000
.\",\n\t\text:\" Value must be less than 255 (\\\\377
).\", // PCRE profile adds to ext.\n\t\texample:[\"\\\\251\",\"RegExr is \\u00A92014\"],\n\t\ttoken:\"\\\\000\"\n\t\t},\n\t\t{\n\t\tid:\"eschexadecimal\",\n\t\tlabel:\"hexadecimal escape\",\n\t\tdesc:\"Hexadecimal escaped character in the form \\\\xFF
.\",\n\t\texample:[\"\\\\xA9\",\"RegExr is \\u00A92014\"],\n\t\ttoken:\"\\\\xFF\"\n\t\t},\n\t\t{\n\t\tid:\"escunicodeu\",\n\t\tlabel:\"unicode escape\",\n\t\tdesc:\"Unicode escaped character in the form \\\\uFFFF
\",\n\t\texample:[\"\\\\u00A9\",\"RegExr is \\u00A92014\"],\n\t\ttoken:\"\\\\uFFFF\"\n\t\t},\n\t\t{\n\t\tid:\"escunicodeub\",\n\t\tlabel:\"extended unicode escape\",\n\t\tdesc:\"Unicode escaped character in the form \\\\u{FFFF}
.\",\n\t\text:\" Supports a full range of unicode point escapes with any number of hex digits. Requires the unicode flag (u
).
\\\\x{FF}
.\",\n\t\ttoken:\"\\\\x{FF}\"\n\t\t},\n\t\t{\n\t\tid:\"esccontrolchar\",\n\t\tlabel:\"control character escape\",\n\t\tdesc:\"Escaped control character in the form \\\\cZ
.\",\n\t\text:\" This can range from \\\\cA
(SOH, char code 1) to \\\\cZ
(SUB, char code 26). \\\\cI
matches TAB (char code 9).\",\n\t\ttoken:\"\\\\cI\"\n\t\t},\n\t\t{\n\t\tid:\"escsequence\",\n\t\tlabel:\"escape sequence\",\n\t\ttip: \"Matches the literal string '{{value}}'.\",\n\t\tdesc:\"All characters between the \\\\Q
and the \\\\E
are interpreted as a literal string. If \\\\E
is omitted, it continues to the end of the expression.\",\n\t\text:\" For example, the expression /\\\\Q(?.)\\\\E/
will match the string (?.)
.\",\n\t\ttoken:\"\\\\Q...\\\\E\"\n\t\t}\n\t]\n\t},\n\t\n\t{\n\tlabel: \"Groups & References\",\n\tid:\"groups\",\n\tdesc: \"Groups allow you to combine a sequence of tokens to operate on them together. Capture groups can be referenced by a backreference and accessed separately in the results.\",\n\tkids: [\n\t\t{\n\t\tid:\"group\",\n\t\tlabel: \"capturing group\",\n\t\tdesc: \"Groups multiple tokens together and creates a capture group for extracting a substring or using a backreference.\",\n\t\texample:[\"(ha)+\",\"hahaha haa hah!\"],\n\t\ttoken:\"(ABC)\"\n\t\t},\n\t\t{\n\t\tid:\"namedgroup\",\n\t\tlabel: \"named capturing group\",\n\t\ttip:\"Creates a capturing group named '{{name}}'.\",\n\t\tdesc:\"Creates a capturing group that can be referenced via the specified name.\",\n\t\text:\"There are multiple syntaxes for this feature:
(?'name'ABC)
(?P<name>ABC)
(?<name>ABC)
There are multiple syntaxes for this feature:
\\\\k'name'
\\\\k<name>
\\\\k{name}
\\\\g{name}
(?P=name)
\\\\1
matches the results of the first capture group & \\\\3
matches the third.\",\n\t\t// PCRE adds relative and alternate syntaxes in ext\n\t\texample:[\"(\\\\w)a\\\\1\",\"hah dad bad dab gag gab\"],\n\t\ttoken:\"\\\\1\"\n\t\t},\n\t\t{\n\t\tid:\"branchreset\",\n\t\tlabel: \"branch reset group\",\n\t\tdesc:\"Define alternative groups that share the same group numbers.\",\n\t\text: \"For example, in (?|(a)|(b))
both groups (a and b) would be counted as group #1.\",\n\t\ttoken:\"(?|(a)|(b))\"\n\t\t},\n\t\t{\n\t\tid:\"noncapgroup\",\n\t\tlabel: \"non-capturing group\",\n\t\tdesc:\"Groups multiple tokens together without creating a capture group.\",\n\t\texample:[\"(?:ha)+\",\"hahaha haa hah!\"],\n\t\ttoken:\"(?:ABC)\"\n\t\t},\n\t\t{\n\t\tid:\"atomic\",\n\t\tlabel:\"atomic group\",\n\t\tdesc:\"Non-capturing group that discards backtracking positions once matched.\",\n\t\text:\"
For example, /(?>ab|a)b/
will match abb
but not ab
because once the ab
option has matched, the atomic group prevents backtracking to retry with the a
option.
For example, /A(?(DEFINE)(?'foo'Z))B\\\\g'foo'/
will match ABZ
, because the define group is ignored in the match except to define the foo
subroutine that is referenced later with \\\\g'foo'
.
/(a|b)\\\\g'1'/
can match ab
, because the expression a|b
is evaluated again.\",\n\t\text:\"There are multiple syntaxes for this feature: \\\\g<1>
\\\\g'1'
(?1)
.
Relative values preceded by +
or -
are also supported. For example \\\\g<-1>
would match the group preceding the reference.
There are multiple syntaxes for this feature: \\\\g<name>
\\\\g'name'
(?&name)
(?P>name)
.
Negative lookarounds specify a group that can NOT match before or after the pattern.
\",\n\tkids: [\n\t\t{\n\t\tid:\"poslookahead\",\n\t\tlabel: \"positive lookahead\",\n\t\tdesc:\"Matches a group after the main expression without including it in the result.\",\n\t\texample:[\"\\\\d(?=px)\",\"1pt 2px 3em 4px\"],\n\t\ttoken:\"(?=ABC)\"\n\t\t},\n\t\t{\n\t\tid:\"neglookahead\",\n\t\tlabel: \"negative lookahead\",\n\t\tdesc:\"Specifies a group that can not match after the main expression (if it matches, the result is discarded).\",\n\t\texample:[\"\\\\d(?!px)\",\"1pt 2px 3em 4px\"],\n\t\ttoken:\"(?!ABC)\"\n\t\t},\n\t\t{\n\t\tid:\"poslookbehind\",\n\t\tlabel: \"positive lookbehind\",\n\t\tdesc:\"Matches a group before the main expression without including it in the result.\",\n\t\ttoken:\"(?<=ABC)\"\n\t\t},\n\t\t{\n\t\tid:\"neglookbehind\",\n\t\tlabel: \"negative lookbehind\",\n\t\tdesc:\"Specifies a group that can not match before the main expression (if it matches, the result is discarded).\",\n\t\ttoken:\"(?/o\\\\Kbar/ will matchbar
within the string foobar
\",\n\t\ttoken:\"\\\\K\"\n\t\t}\n\t]\n\t},\n\t\n\t{\n\tlabel: \"Quantifiers & Alternation\",\n\tid:\"quants\",\n\tdesc: \"Quantifiers indicate that the preceding token must be matched a certain number of times. By default, quantifiers are greedy, and will match as many characters as possible.\"+\n\t\t\"{1,3}
will match 1 to 3. \"+\n\t\t\t\"{3}
will match exactly 3. \"+\n\t\t\t\"{3,}
will match 3 or more. \",\n\t\texample:[\"b\\\\w{2,3}\",\"b be bee beer beers\"],\n\t\ttoken:\"{1,3}\"\n\t\t},\n\t\t{\n\t\tid:\"opt\",\n\t\tlabel:\"optional\",\n\t\tdesc:\"Matches 0 or 1 of the preceding token, effectively making it optional.\",\n\t\texample: [\"colou?r\", \"color colour\"],\n\t\ttoken:\"?\"\n\t\t},\n\t\t{\n\t\tid:\"lazy\",\n\t\ttip:\"Makes the preceding quantifier {{getLazy()}}, causing it to match as {{getLazyFew()}} characters as possible.\",\n\t\tdesc:\"Makes the preceding quantifier lazy, causing it to match as few characters as possible.\",\n\t\text:\" By default, quantifiers are greedy, and will match as many characters as possible.\",\n\t\texample:[\"b\\\\w+?\",\"b be bee beer beers\"],\n\t\ttoken:\"?\"\n\t\t},\n\t\t{\n\t\tid:\"possessive\",\n\t\tdesc:\"Makes the preceding quantifier possessive. It will match as many characters as possible, and will not release them to match subsequent tokens.\",\n\t\text:\"For example /.*a/
would match aaa
, but /.*+a/
would not, because the repeating dot would match and not release the last character to match a
.
|
.\",\n\t\text:\"It can operate within a group, or on a whole expression. The patterns will be tested in order.
\",\n\t\texample:[\"b(a|e|i)d\",\"bad bud bod bed bid\"],\n\t\ttoken:\"|\"\n\t\t}\n\t]\n\t},\n\t\n\t{\n\tlabel: \"Special\",\n\tid:\"other\",\n\tdesc: \"Tokens that don't quite fit anywhere else.\",\n\tkids: [\n\t\t{\n\t\tid:\"comment\",\n\t\tdesc:\"Allows you to insert a comment into your expression that is ignored when finding a match.\",\n\t\ttoken:\"(?#foo)\"\n\t\t},\n\t\t{\n\t\tid:\"conditional\",\n\t\tdesc:\"Conditionally matches one of two options based on whether a lookaround is matched.\",\n\t\text:\"For example, /(?(?=a)ab|..)/
will match ab
and zx
but not ax
, because if the first character matches the condition a
then it evaluates the pattern ab
.
Any lookaround can be used as the condition. A lookahead will start the subsequent match at the start of the condition, a lookbehind will start it after.
\",\n\t\ttoken:\"(?(?=A)B|C)\"\n\t\t},\n\t\t{\n\t\tid:\"conditionalgroup\",\n\t\tlabel:\"group conditional\",\n\t\tdesc:\"Conditionally matches one of two options based on whether group '{{name}}' matched.\",\n\t\text:\"For example, /(z)?(?(1)a|b)/
will match za
because the first capture group matches z
successfully, which causes the conditional to match the first option a
.
The same pattern will also match b
on its own, because group 1 doesn't match, so it instead tries to match the second option b
.
You can reference a group by name, number, or relative position (ex. -1
).
For example, /a(?R)?b/
will match any number of a
followed by the same number of z
: the full text of az
or aaaazzzz
, but not azzz
.
There are multiple syntaxes for this feature:
(?R)
(?0)
\\\\g<0>
\\\\g'0'
(?i)
would enable case insensitivity for the remainder of the expression.\"+\n\t\t\t\"Multiple modifiers can be specified, and any modifiers that follow -
are disabled. For example (?im-s)
would enable case insensitivity & multiline modes, and disable dotall.
Supported modifiers are: i
- case insensitive, s
- dotall, m
- multiline, x
- free spacing, J
- allow duplicate names, U
- ungreedy.
There are multiple syntaxes for this feature:
$0
\\\\0
\\\\{0}
$3
would insert the third capture group.\",\n\t\t// NOTE: javascript profile overrides this:\n\t\text:\"There are multiple syntaxes for this feature:
$1
\\\\1
\\\\{1}
\\\\n
, \\\\r
, \\\\t
, \\\\\\\\
, and unicode escapes \\\\uFFFF
. This may vary in your deploy environment.\"\n\t\t}\n\t]\n\t},\n\t\n\t{\n\tid:\"flags\",\n\tlabel:\"Flags\",\n\ttooltip:\"Expression flags change how the expression is interpreted. Click to edit.\",\n\tdesc:\"Expression flags change how the expression is interpreted. Flags follow the closing forward slash of the expression (ex. /.+/igm
).\",\n\ttarget:\"flags\",\n\tkids: [\n\t\t{\n\t\tid:\"caseinsensitive\",\n\t\tlabel: \"ignore case\",\n\t\tdesc:\"Makes the whole expression case-insensitive.\",\n\t\text:\" For example, /aBc/i
would match AbC
.\",\n\t\ttoken:\"i\"\n\t\t},\n\t\t{\n\t\tid:\"global\",\n\t\tlabel: \"global search\",\n\t\ttip: \"Retain the index of the last match, allowing iterative searches.\",\n\t\tdesc:\"Retain the index of the last match, allowing subsequent searches to start from the end of the previous match.\"+\n\t\t\t\"Without the global flag, subsequent searches will return the same match.
^
and $
) will match the start and end of a line, instead of the start and end of the whole string.\"+\n\t\t\t\"Note that patterns such as /^[\\\\s\\\\S]+$/m
may return matches that span multiple lines because the anchors will match the start/end of any line.
\\\\x{FFFFF}
unicode escapes.\",\n\t\tdesc:\"When the unicode flag is enabled, you can use extended unicode escapes in the form \\\\x{FFFFF}
.\"+\n\t\t\t\"It also makes other escapes stricter, causing unrecognized escapes (ex. \\\\j
) to throw an error.
g
) flag if set.\",\n\t\text:\" Because each search in RegExr is discrete, this flag has no further impact on the displayed results.\",\n\t\ttoken:\"y\"\n\t\t},\n\t\t{\n\t\tid:\"dotall\",\n\t\tdesc:\"Dot (.
) will match any character, including newline.\",\n\t\ttoken:\"s\"\n\t\t},\n\t\t{\n\t\tid:\"extended\",\n\t\tdesc:\"Literal whitespace characters are ignored, except in character sets.\",\n\t\ttoken:\"x\"\n\t\t},\n\t\t{\n\t\tid:\"ungreedy\",\n\t\ttip:\"Makes quantifiers ungreedy (lazy) by default.\",\n\t\tdesc:\"Makes quantifiers ungreedy (lazy) by default. Quantifiers followed by ?
will become greedy.\",\n\t\ttoken:\"U\"\n\t\t}\n\t]\n\t}\n];\n\n// content that isn't included in the Reference menu item:\no.misc = {\n\tkids:[\n\t\t{\n\t\tid:\"ignorews\",\n\t\tlabel:\"ignored whitespace\",\n\t\ttip:\"Whitespace character ignored due to the extended flag or mode.\"\n\t\t},\n\t\t{\n\t\tid:\"extnumref\", // alternative syntaxes.\n\t\tproxy:\"numref\"\n\t\t},\n\t\t{\n\t\tid:\"char\",\n\t\tlabel:\"character\",\n\t\ttip:\"Matches a {{getChar()}} character (char code {{code}}). {{getInsensitive()}}\"\n\t\t},\n\t\t{\n\t\tid:\"escchar\",\n\t\tlabel:\"escaped character\",\n\t\ttip:\"Matches a {{getChar()}} character (char code {{code}}).\"\n\t\t},\n\t\t{\n\t\tid:\"open\",\n\t\ttip:\"Indicates the start of a regular expression.\"\n\t\t},\n\t\t{\n\t\tid:\"close\",\n\t\ttip:\"Indicates the end of a regular expression and the start of expression flags.\"\n\t\t},\n\t\t{\n\t\tid:\"condition\",\n\t\ttip:\"The lookaround to match in resolving the enclosing conditional statement. See 'conditional' in the Reference for info.\"\n\t\t},\n\t\t{\n\t\tid:\"conditionalelse\",\n\t\tlabel:\"conditional else\",\n\t\ttip:\"Delimits the 'else' portion of the conditional.\"\n\t\t},\n\t\t{\n\t\tid:\"ERROR\",\n\t\ttip:\"Errors in the expression are underlined in red. Roll over errors for more info.\"\n\t\t},\n\t\t{\n\t\tid:\"PREG_INTERNAL_ERROR\",\n\t\ttip:\"Internal PCRE error\"\n\t\t},\n\t\t{\n\t\tid:\"PREG_BACKTRACK_LIMIT_ERROR\",\n\t\ttip:\"Backtrack limit was exhausted.\"\n\t\t},\n\t\t{\n\t\tid:\"PREG_RECURSION_LIMIT_ERROR\",\n\t\ttip:\"Recursion limit was exhausted\"\n\t\t},\n\t\t{\n\t\tid:\"PREG_BAD_UTF8_ERROR\",\n\t\ttip:\"Malformed UTF-8 data\"\n\t\t},\n\t\t{\n\t\tid:\"PREG_BAD_UTF8_OFFSET_ERROR\",\n\t\ttip:\"Malformed UTF-8 data\"\n\t\t}\n\t]\n};\n\no.errors = {\n\tgroupopen:\"Unmatched opening parenthesis.\",\n\tgroupclose:\"Unmatched closing parenthesis.\",\n\tsetopen:\"Unmatched opening square bracket.\",\n\trangerev:\"Range values reversed. Start char code is greater than end char code.\",\n\tquanttarg:\"Invalid target for quantifier.\",\n\tquantrev:\"Quantifier minimum is greater than maximum.\",\n\tesccharopen:\"Dangling backslash.\",\n\tesccharbad:\"Unrecognized or malformed escape character.\",\n\tunicodebad:\"Unrecognized unicode category or script.\",\n\tposixcharclassbad:\"Unrecognized POSIX character class.\",\n\tposixcharclassnoset:\"POSIX character class must be in a character set.\",\n\tnotsupported:\"The \\\"{{~getLabel()}}\\\" feature is not supported in this flavor of RegEx.\",\n\tfwdslash:\"Unescaped forward slash. This may cause issues if copying/pasting this expression into code.\",\n\tesccharbad:\"Invalid escape sequence.\",\n\tservercomm:\"An error occurred while communicating with the server.\",\n\textraelse:\"Extra else in conditional group.\",\n\tunmatchedref:\"Reference to non-existent group \\\"{{name}}\\\".\",\n\tmodebad:\"Unrecognized mode flag \\\"{{errmode}}
\\\".\",\n\tbadname:\"Group name can not start with a digit.\",\n\tdupname:\"Duplicate group name.\",\n\tbranchreseterr:\"Branch Reset. Results will be ok, but RegExr's parser does not number branch reset groups correctly. Coming soon!\",\n\ttimeout:\"The expression took longer than 250ms to execute.\", // TODO: can we couple this to the help content somehow?\n\n\t// warnings:\n\tjsfuture:\"The \\\"{{~getLabel()}}\\\" feature may not be supported in all browsers.\",\n\tinfinite:\"The expression can return empty matches, and may match infinitely in some use cases.\", // TODO: can we couple this to the help content somehow?\n};\n\n/*\nclasses:\nquant\nset\nspecial\nref\nesc\nanchor\ncharclass\ngroup\ncomment\n */\n","/*\nRegExr: Learn, Build, & Test RegEx\nCopyright (C) 2017 gskinner.com, inc.\n\nThis program is free software: you can redistribute it and/or modify\nit under the terms of the GNU General Public License as published by\nthe Free Software Foundation, either version 3 of the License, or\n(at your option) any later version.\n\nThis program is distributed in the hope that it will be useful,\nbut WITHOUT ANY WARRANTY; without even the implied warranty of\nMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\nGNU General Public License for more details.\n\nYou should have received a copy of the GNU General Public License\nalong with this program. If not, see