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// CodeMirror, copyright (c) by Marijn Haverbeke and others // Distributed under an MIT license: http://codemirror.net/LICENSE // This is CodeMirror (http://codemirror.net), a code editor // implemented in JavaScript on top of the browser's DOM. // // You can find some technical background for some of the code below // at http://marijnhaverbeke.nl/blog/#cm-internals . (function (global, factory) { typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : typeof define === 'function' && define.amd ? define(factory) : (global.CodeMirror = factory()); }(this, (function () { 'use strict'; // Kludges for bugs and behavior differences that can't be feature // detected are enabled based on userAgent etc sniffing. var userAgent = navigator.userAgent var platform = navigator.platform var gecko = /gecko\/\d/i.test(userAgent) var ie_upto10 = /MSIE \d/.test(userAgent) var ie_11up = /Trident\/(?:[7-9]\|\d{2,})\..rv:(\d+)/.exec(userAgent) var edge = /Edge\/(\d+)/.exec(userAgent) var ie = ie_upto10 \|\| ie_11up \|\| edge var ie_version = ie && (ie_upto10 ? document.documentMode \|\| 6 : +(edge \|\| ie_11up)[1]) var webkit = !edge && /WebKit\//.test(userAgent) var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent) var chrome = !edge && /Chrome\//.test(userAgent) var presto = /Opera\//.test(userAgent) var safari = /Apple Computer/.test(navigator.vendor) var mac_geMountainLion = /Mac OS X 1\d\D([8-9]\|\d\d)\D/.test(userAgent) var phantom = /PhantomJS/.test(userAgent) var ios = !edge && /AppleWebKit/.test(userAgent) && /Mobile\/\w+/.test(userAgent) var android = /Android/.test(userAgent) // This is woefully incomplete. Suggestions for alternative methods welcome. var mobile = ios \|\| android \|\| /webOS\|BlackBerry\|Opera Mini\|Opera Mobi\|IEMobile/i.test(userAgent) var mac = ios \|\| /Mac/.test(platform) var chromeOS = /\bCrOS\b/.test(userAgent) var windows = /win/i.test(platform) var presto_version = presto && userAgent.match(/Version\/(\d\.\d)/) if (presto_version) { presto_version = Number(presto_version[1]) } if (presto_version && presto_version >= 15) { presto = false; webkit = true } // Some browsers use the wrong event properties to signal cmd/ctrl on OS X var flipCtrlCmd = mac && (qtwebkit \|\| presto && (presto_version == null \|\| presto_version < 12.11)) var captureRightClick = gecko \|\| (ie && ie_version >= 9) function classTest(cls) { return new RegExp("(^\|\\s)" + cls + "(?:$\|\\s)\\s") } var rmClass = function(node, cls) { var current = node.className var match = classTest(cls).exec(current) if (match) { var after = current.slice(match.index + match[0].length) node.className = current.slice(0, match.index) + (after ? match[1] + after : "") } } function removeChildren(e) { for (var count = e.childNodes.length; count > 0; --count) { e.removeChild(e.firstChild) } return e } function removeChildrenAndAdd(parent, e) { return removeChildren(parent).appendChild(e) } function elt(tag, content, className, style) { var e = document.createElement(tag) if (className) { e.className = className } if (style) { e.style.cssText = style } if (typeof content == "string") { e.appendChild(document.createTextNode(content)) } else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]) } } return e } // wrapper for elt, which removes the elt from the accessibility tree function eltP(tag, content, className, style) { var e = elt(tag, content, className, style) e.setAttribute("role", "presentation") return e } var range if (document.createRange) { range = function(node, start, end, endNode) { var r = document.createRange() r.setEnd(endNode \|\| node, end) r.setStart(node, start) return r } } else { range = function(node, start, end) { var r = document.body.createTextRange() try { r.moveToElementText(node.parentNode) } catch(e) { return r } r.collapse(true) r.moveEnd("character", end) r.moveStart("character", start) return r } } function contains(parent, child) { if (child.nodeType == 3) // Android browser always returns false when child is a textnode { child = child.parentNode } if (parent.contains) { return parent.contains(child) } do { if (child.nodeType == 11) { child = child.host } if (child == parent) { return true } } while (child = child.parentNode) } function activeElt() { // IE and Edge may throw an "Unspecified Error" when accessing document.activeElement. // IE < 10 will throw when accessed while the page is loading or in an iframe. // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable. var activeElement try { activeElement = document.activeElement } catch(e) { activeElement = document.body \|\| null } while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement) { activeElement = activeElement.shadowRoot.activeElement } return activeElement } function addClass(node, cls) { var current = node.className if (!classTest(cls).test(current)) { node.className += (current ? " " : "") + cls } } function joinClasses(a, b) { var as = a.split(" ") for (var i = 0; i < as.length; i++) { if (as[i] && !classTest(as[i]).test(b)) { b += " " + as[i] } } return b } var selectInput = function(node) { node.select() } if (ios) // Mobile Safari apparently has a bug where select() is broken. { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length } } else if (ie) // Suppress mysterious IE10 errors { selectInput = function(node) { try { node.select() } catch(_e) {} } } function bind(f) { var args = Array.prototype.slice.call(arguments, 1) return function(){return f.apply(null, args)} } function copyObj(obj, target, overwrite) { if (!target) { target = {} } for (var prop in obj) { if (obj.hasOwnProperty(prop) && (overwrite !== false \|\| !target.hasOwnProperty(prop))) { target[prop] = obj[prop] } } return target } // Counts the column offset in a string, taking tabs into account. // Used mostly to find indentation. function countColumn(string, end, tabSize, startIndex, startValue) { if (end == null) { end = string.search(/[^\s\u00a0]/) if (end == -1) { end = string.length } } for (var i = startIndex \|\| 0, n = startValue \|\| 0;;) { var nextTab = string.indexOf("\t", i) if (nextTab < 0 \|\| nextTab >= end) { return n + (end - i) } n += nextTab - i n += tabSize - (n % tabSize) i = nextTab + 1 } } var Delayed = function() {this.id = null}; Delayed.prototype.set = function (ms, f) { clearTimeout(this.id) this.id = setTimeout(f, ms) }; function indexOf(array, elt) { for (var i = 0; i < array.length; ++i) { if (array[i] == elt) { return i } } return -1 } // Number of pixels added to scroller and sizer to hide scrollbar var scrollerGap = 30 // Returned or thrown by various protocols to signal 'I'm not // handling this'. var Pass = {toString: function(){return "CodeMirror.Pass"}} // Reused option objects for setSelection & friends var sel_dontScroll = {scroll: false}; var sel_mouse = {origin: "mouse"}; var sel_move = {origin: "+move"}; // The inverse of countColumn -- find the offset that corresponds to // a particular column. function findColumn(string, goal, tabSize) { for (var pos = 0, col = 0;;) { var nextTab = string.indexOf("\t", pos) if (nextTab == -1) { nextTab = string.length } var skipped = nextTab - pos if (nextTab == string.length \|\| col + skipped >= goal) { return pos + Math.min(skipped, goal - col) } col += nextTab - pos col += tabSize - (col % tabSize) pos = nextTab + 1 if (col >= goal) { return pos } } } var spaceStrs = [""] function spaceStr(n) { while (spaceStrs.length <= n) { spaceStrs.push(lst(spaceStrs) + " ") } return spaceStrs[n] } function lst(arr) { return arr[arr.length-1] } function map(array, f) { var out = [] for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i) } return out } function insertSorted(array, value, score) { var pos = 0, priority = score(value) while (pos < array.length && score(array[pos]) <= priority) { pos++ } array.splice(pos, 0, value) } function nothing() {} function createObj(base, props) { var inst if (Object.create) { inst = Object.create(base) } else { nothing.prototype = base inst = new nothing() } if (props) { copyObj(props, inst) } return inst } var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/ function isWordCharBasic(ch) { return /\w/.test(ch) \|\| ch > "\x80" && (ch.toUpperCase() != ch.toLowerCase() \|\| nonASCIISingleCaseWordChar.test(ch)) } function isWordChar(ch, helper) { if (!helper) { return isWordCharBasic(ch) } if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) { return true } return helper.test(ch) } function isEmpty(obj) { for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } } return true } // Extending unicode characters. A series of a non-extending char + // any number of extending chars is treated as a single unit as far // as editing and measuring is concerned. This is not fully correct, // since some scripts/fonts/browsers also treat other configurations // of code points as a group. var 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]/ function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) } // Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range. function skipExtendingChars(str, pos, dir) { while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir } return pos } // Returns the value from the range [`from`; `to`] that satisfies // `pred` and is closest to `from`. Assumes that at least `to` satisfies `pred`. function findFirst(pred, from, to) { for (;;) { if (Math.abs(from - to) <= 1) { return pred(from) ? from : to } var mid = Math.floor((from + to) / 2) if (pred(mid)) { to = mid } else { from = mid } } } // The display handles the DOM integration, both for input reading // and content drawing. It holds references to DOM nodes and // display-related state. function Display(place, doc, input) { var d = this this.input = input // Covers bottom-right square when both scrollbars are present. d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler") d.scrollbarFiller.setAttribute("cm-not-content", "true") // Covers bottom of gutter when coverGutterNextToScrollbar is on // and h scrollbar is present. d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler") d.gutterFiller.setAttribute("cm-not-content", "true") // Will contain the actual code, positioned to cover the viewport. d.lineDiv = eltP("div", null, "CodeMirror-code") // Elements are added to these to represent selection and cursors. d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1") d.cursorDiv = elt("div", null, "CodeMirror-cursors") // A visibility: hidden element used to find the size of things. d.measure = elt("div", null, "CodeMirror-measure") // When lines outside of the viewport are measured, they are drawn in this. d.lineMeasure = elt("div", null, "CodeMirror-measure") // Wraps everything that needs to exist inside the vertically-padded coordinate system d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv], null, "position: relative; outline: none") var lines = eltP("div", [d.lineSpace], "CodeMirror-lines") // Moved around its parent to cover visible view. d.mover = elt("div", [lines], null, "position: relative") // Set to the height of the document, allowing scrolling. d.sizer = elt("div", [d.mover], "CodeMirror-sizer") d.sizerWidth = null // Behavior of elts with overflow: auto and padding is // inconsistent across browsers. This is used to ensure the // scrollable area is big enough. d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;") // Will contain the gutters, if any. d.gutters = elt("div", null, "CodeMirror-gutters") d.lineGutter = null // Actual scrollable element. d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll") d.scroller.setAttribute("tabIndex", "-1") // The element in which the editor lives. d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror") // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported) if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0 } if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true } if (place) { if (place.appendChild) { place.appendChild(d.wrapper) } else { place(d.wrapper) } } // Current rendered range (may be bigger than the view window). d.viewFrom = d.viewTo = doc.first d.reportedViewFrom = d.reportedViewTo = doc.first // Information about the rendered lines. d.view = [] d.renderedView = null // Holds info about a single rendered line when it was rendered // for measurement, while not in view. d.externalMeasured = null // Empty space (in pixels) above the view d.viewOffset = 0 d.lastWrapHeight = d.lastWrapWidth = 0 d.updateLineNumbers = null d.nativeBarWidth = d.barHeight = d.barWidth = 0 d.scrollbarsClipped = false // Used to only resize the line number gutter when necessary (when // the amount of lines crosses a boundary that makes its width change) d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null // Set to true when a non-horizontal-scrolling line widget is // added. As an optimization, line widget aligning is skipped when // this is false. d.alignWidgets = false d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null // Tracks the maximum line length so that the horizontal scrollbar // can be kept static when scrolling. d.maxLine = null d.maxLineLength = 0 d.maxLineChanged = false // Used for measuring wheel scrolling granularity d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null // True when shift is held down. d.shift = false // Used to track whether anything happened since the context menu // was opened. d.selForContextMenu = null d.activeTouch = null input.init(d) } // Find the line object corresponding to the given line number. function getLine(doc, n) { n -= doc.first if (n < 0 \|\| n >= doc.size) { throw new Error("There is no line " + (n + doc.first) + " in the document.") } var chunk = doc while (!chunk.lines) { for (var i = 0;; ++i) { var child = chunk.children[i], sz = child.chunkSize() if (n < sz) { chunk = child; break } n -= sz } } return chunk.lines[n] } // Get the part of a document between two positions, as an array of // strings. function getBetween(doc, start, end) { var out = [], n = start.line doc.iter(start.line, end.line + 1, function (line) { var text = line.text if (n == end.line) { text = text.slice(0, end.ch) } if (n == start.line) { text = text.slice(start.ch) } out.push(text) ++n }) return out } // Get the lines between from and to, as array of strings. function getLines(doc, from, to) { var out = [] doc.iter(from, to, function (line) { out.push(line.text) }) // iter aborts when callback returns truthy value return out } // Update the height of a line, propagating the height change // upwards to parent nodes. function updateLineHeight(line, height) { var diff = height - line.height if (diff) { for (var n = line; n; n = n.parent) { n.height += diff } } } // Given a line object, find its line number by walking up through // its parent links. function lineNo(line) { if (line.parent == null) { return null } var cur = line.parent, no = indexOf(cur.lines, line) for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { for (var i = 0;; ++i) { if (chunk.children[i] == cur) { break } no += chunk.children[i].chunkSize() } } return no + cur.first } // Find the line at the given vertical position, using the height // information in the document tree. function lineAtHeight(chunk, h) { var n = chunk.first outer: do { for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) { var child = chunk.children[i$1], ch = child.height if (h < ch) { chunk = child; continue outer } h -= ch n += child.chunkSize() } return n } while (!chunk.lines) var i = 0 for (; i < chunk.lines.length; ++i) { var line = chunk.lines[i], lh = line.height if (h < lh) { break } h -= lh } return n + i } function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size} function lineNumberFor(options, i) { return String(options.lineNumberFormatter(i + options.firstLineNumber)) } // A Pos instance represents a position within the text. function Pos(line, ch, sticky) { if ( sticky === void 0 ) sticky = null; if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) } this.line = line this.ch = ch this.sticky = sticky } // Compare two positions, return 0 if they are the same, a negative // number when a is less, and a positive number otherwise. function cmp(a, b) { return a.line - b.line \|\| a.ch - b.ch } function equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 } function copyPos(x) {return Pos(x.line, x.ch)} function maxPos(a, b) { return cmp(a, b) < 0 ? b : a } function minPos(a, b) { return cmp(a, b) < 0 ? a : b } // Most of the external API clips given positions to make sure they // actually exist within the document. function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))} function clipPos(doc, pos) { if (pos.line < doc.first) { return Pos(doc.first, 0) } var last = doc.first + doc.size - 1 if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) } return clipToLen(pos, getLine(doc, pos.line).text.length) } function clipToLen(pos, linelen) { var ch = pos.ch if (ch == null \|\| ch > linelen) { return Pos(pos.line, linelen) } else if (ch < 0) { return Pos(pos.line, 0) } else { return pos } } function clipPosArray(doc, array) { var out = [] for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]) } return out } // Optimize some code when these features are not used. var sawReadOnlySpans = false; var sawCollapsedSpans = false; function seeReadOnlySpans() { sawReadOnlySpans = true } function seeCollapsedSpans() { sawCollapsedSpans = true } // TEXTMARKER SPANS function MarkedSpan(marker, from, to) { this.marker = marker this.from = from; this.to = to } // Search an array of spans for a span matching the given marker. function getMarkedSpanFor(spans, marker) { if (spans) { for (var i = 0; i < spans.length; ++i) { var span = spans[i] if (span.marker == marker) { return span } } } } // Remove a span from an array, returning undefined if no spans are // left (we don't store arrays for lines without spans). function removeMarkedSpan(spans, span) { var r for (var i = 0; i < spans.length; ++i) { if (spans[i] != span) { (r \|\| (r = [])).push(spans[i]) } } return r } // Add a span to a line. function addMarkedSpan(line, span) { line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span] span.marker.attachLine(line) } // Used for the algorithm that adjusts markers for a change in the // document. These functions cut an array of spans at a given // character position, returning an array of remaining chunks (or // undefined if nothing remains). function markedSpansBefore(old, startCh, isInsert) { var nw if (old) { for (var i = 0; i < old.length; ++i) { var span = old[i], marker = span.marker var startsBefore = span.from == null \|\| (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh) if (startsBefore \|\| span.from == startCh && marker.type == "bookmark" && (!isInsert \|\| !span.marker.insertLeft)) { var endsAfter = span.to == null \|\| (marker.inclusiveRight ? span.to >= startCh : span.to > startCh) ;(nw \|\| (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to)) } } } return nw } function markedSpansAfter(old, endCh, isInsert) { var nw if (old) { for (var i = 0; i < old.length; ++i) { var span = old[i], marker = span.marker var endsAfter = span.to == null \|\| (marker.inclusiveRight ? span.to >= endCh : span.to > endCh) if (endsAfter \|\| span.from == endCh && marker.type == "bookmark" && (!isInsert \|\| span.marker.insertLeft)) { var startsBefore = span.from == null \|\| (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh) ;(nw \|\| (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh, span.to == null ? null : span.to - endCh)) } } } return nw } // Given a change object, compute the new set of marker spans that // cover the line in which the change took place. Removes spans // entirely within the change, reconnects spans belonging to the // same marker that appear on both sides of the change, and cuts off // spans partially within the change. Returns an array of span // arrays with one element for each line in (after) the change. function stretchSpansOverChange(doc, change) { if (change.full) { return null } var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans if (!oldFirst && !oldLast) { return null } var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0 // Get the spans that 'stick out' on both sides var first = markedSpansBefore(oldFirst, startCh, isInsert) var last = markedSpansAfter(oldLast, endCh, isInsert) // Next, merge those two ends var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0) if (first) { // Fix up .to properties of first for (var i = 0; i < first.length; ++i) { var span = first[i] if (span.to == null) { var found = getMarkedSpanFor(last, span.marker) if (!found) { span.to = startCh } else if (sameLine) { span.to = found.to == null ? null : found.to + offset } } } } if (last) { // Fix up .from in last (or move them into first in case of sameLine) for (var i$1 = 0; i$1 < last.length; ++i$1) { var span$1 = last[i$1] if (span$1.to != null) { span$1.to += offset } if (span$1.from == null) { var found$1 = getMarkedSpanFor(first, span$1.marker) if (!found$1) { span$1.from = offset if (sameLine) { (first \|\| (first = [])).push(span$1) } } } else { span$1.from += offset if (sameLine) { (first \|\| (first = [])).push(span$1) } } } } // Make sure we didn't create any zero-length spans if (first) { first = clearEmptySpans(first) } if (last && last != first) { last = clearEmptySpans(last) } var newMarkers = [first] if (!sameLine) { // Fill gap with whole-line-spans var gap = change.text.length - 2, gapMarkers if (gap > 0 && first) { for (var i$2 = 0; i$2 < first.length; ++i$2) { if (first[i$2].to == null) { (gapMarkers \|\| (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)) } } } for (var i$3 = 0; i$3 < gap; ++i$3) { newMarkers.push(gapMarkers) } newMarkers.push(last) } return newMarkers } // Remove spans that are empty and don't have a clearWhenEmpty // option of false. function clearEmptySpans(spans) { for (var i = 0; i < spans.length; ++i) { var span = spans[i] if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false) { spans.splice(i--, 1) } } if (!spans.length) { return null } return spans } // Used to 'clip' out readOnly ranges when making a change. function removeReadOnlyRanges(doc, from, to) { var markers = null doc.iter(from.line, to.line + 1, function (line) { if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) { var mark = line.markedSpans[i].marker if (mark.readOnly && (!markers \|\| indexOf(markers, mark) == -1)) { (markers \|\| (markers = [])).push(mark) } } } }) if (!markers) { return null } var parts = [{from: from, to: to}] for (var i = 0; i < markers.length; ++i) { var mk = markers[i], m = mk.find(0) for (var j = 0; j < parts.length; ++j) { var p = parts[j] if (cmp(p.to, m.from) < 0 \|\| cmp(p.from, m.to) > 0) { continue } var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to) if (dfrom < 0 \|\| !mk.inclusiveLeft && !dfrom) { newParts.push({from: p.from, to: m.from}) } if (dto > 0 \|\| !mk.inclusiveRight && !dto) { newParts.push({from: m.to, to: p.to}) } parts.splice.apply(parts, newParts) j += newParts.length - 3 } } return parts } // Connect or disconnect spans from a line. function detachMarkedSpans(line) { var spans = line.markedSpans if (!spans) { return } for (var i = 0; i < spans.length; ++i) { spans[i].marker.detachLine(line) } line.markedSpans = null } function attachMarkedSpans(line, spans) { if (!spans) { return } for (var i = 0; i < spans.length; ++i) { spans[i].marker.attachLine(line) } line.markedSpans = spans } // Helpers used when computing which overlapping collapsed span // counts as the larger one. function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 } function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 } // Returns a number indicating which of two overlapping collapsed // spans is larger (and thus includes the other). Falls back to // comparing ids when the spans cover exactly the same range. function compareCollapsedMarkers(a, b) { var lenDiff = a.lines.length - b.lines.length if (lenDiff != 0) { return lenDiff } var aPos = a.find(), bPos = b.find() var fromCmp = cmp(aPos.from, bPos.from) \|\| extraLeft(a) - extraLeft(b) if (fromCmp) { return -fromCmp } var toCmp = cmp(aPos.to, bPos.to) \|\| extraRight(a) - extraRight(b) if (toCmp) { return toCmp } return b.id - a.id } // Find out whether a line ends or starts in a collapsed span. If // so, return the marker for that span. function collapsedSpanAtSide(line, start) { var sps = sawCollapsedSpans && line.markedSpans, found if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) { sp = sps[i] if (sp.marker.collapsed && (start ? sp.from : sp.to) == null && (!found \|\| compareCollapsedMarkers(found, sp.marker) < 0)) { found = sp.marker } } } return found } function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) } function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) } // Test whether there exists a collapsed span that partially // overlaps (covers the start or end, but not both) of a new span. // Such overlap is not allowed. function conflictingCollapsedRange(doc, lineNo, from, to, marker) { var line = getLine(doc, lineNo) var sps = sawCollapsedSpans && line.markedSpans if (sps) { for (var i = 0; i < sps.length; ++i) { var sp = sps[i] if (!sp.marker.collapsed) { continue } var found = sp.marker.find(0) var fromCmp = cmp(found.from, from) \|\| extraLeft(sp.marker) - extraLeft(marker) var toCmp = cmp(found.to, to) \|\| extraRight(sp.marker) - extraRight(marker) if (fromCmp >= 0 && toCmp <= 0 \|\| fromCmp <= 0 && toCmp >= 0) { continue } if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) \|\| fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0)) { return true } } } } // A visual line is a line as drawn on the screen. Folding, for // example, can cause multiple logical lines to appear on the same // visual line. This finds the start of the visual line that the // given line is part of (usually that is the line itself). function visualLine(line) { var merged while (merged = collapsedSpanAtStart(line)) { line = merged.find(-1, true).line } return line } function visualLineEnd(line) { var merged while (merged = collapsedSpanAtEnd(line)) { line = merged.find(1, true).line } return line } // Returns an array of logical lines that continue the visual line // started by the argument, or undefined if there are no such lines. function visualLineContinued(line) { var merged, lines while (merged = collapsedSpanAtEnd(line)) { line = merged.find(1, true).line ;(lines \|\| (lines = [])).push(line) } return lines } // Get the line number of the start of the visual line that the // given line number is part of. function visualLineNo(doc, lineN) { var line = getLine(doc, lineN), vis = visualLine(line) if (line == vis) { return lineN } return lineNo(vis) } // Get the line number of the start of the next visual line after // the given line. function visualLineEndNo(doc, lineN) { if (lineN > doc.lastLine()) { return lineN } var line = getLine(doc, lineN), merged if (!lineIsHidden(doc, line)) { return lineN } while (merged = collapsedSpanAtEnd(line)) { line = merged.find(1, true).line } return lineNo(line) + 1 } // Compute whether a line is hidden. Lines count as hidden when they // are part of a visual line that starts with another line, or when // they are entirely covered by collapsed, non-widget span. function lineIsHidden(doc, line) { var sps = sawCollapsedSpans && line.markedSpans if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) { sp = sps[i] if (!sp.marker.collapsed) { continue } if (sp.from == null) { return true } if (sp.marker.widgetNode) { continue } if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) { return true } } } } function lineIsHiddenInner(doc, line, span) { if (span.to == null) { var end = span.marker.find(1, true) return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker)) } if (span.marker.inclusiveRight && span.to == line.text.length) { return true } for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) { sp = line.markedSpans[i] if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to && (sp.to == null \|\| sp.to != span.from) && (sp.marker.inclusiveLeft \|\| span.marker.inclusiveRight) && lineIsHiddenInner(doc, line, sp)) { return true } } } // Find the height above the given line. function heightAtLine(lineObj) { lineObj = visualLine(lineObj) var h = 0, chunk = lineObj.parent for (var i = 0; i < chunk.lines.length; ++i) { var line = chunk.lines[i] if (line == lineObj) { break } else { h += line.height } } for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { for (var i$1 = 0; i$1 < p.children.length; ++i$1) { var cur = p.children[i$1] if (cur == chunk) { break } else { h += cur.height } } } return h } // Compute the character length of a line, taking into account // collapsed ranges (see markText) that might hide parts, and join // other lines onto it. function lineLength(line) { if (line.height == 0) { return 0 } var len = line.text.length, merged, cur = line while (merged = collapsedSpanAtStart(cur)) { var found = merged.find(0, true) cur = found.from.line len += found.from.ch - found.to.ch } cur = line while (merged = collapsedSpanAtEnd(cur)) { var found$1 = merged.find(0, true) len -= cur.text.length - found$1.from.ch cur = found$1.to.line len += cur.text.length - found$1.to.ch } return len } // Find the longest line in the document. function findMaxLine(cm) { var d = cm.display, doc = cm.doc d.maxLine = getLine(doc, doc.first) d.maxLineLength = lineLength(d.maxLine) d.maxLineChanged = true doc.iter(function (line) { var len = lineLength(line) if (len > d.maxLineLength) { d.maxLineLength = len d.maxLine = line } }) } // BIDI HELPERS function iterateBidiSections(order, from, to, f) { if (!order) { return f(from, to, "ltr") } var found = false for (var i = 0; i < order.length; ++i) { var part = order[i] if (part.from < to && part.to > from \|\| from == to && part.to == from) { f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr") found = true } } if (!found) { f(from, to, "ltr") } } var bidiOther = null function getBidiPartAt(order, ch, sticky) { var found bidiOther = null for (var i = 0; i < order.length; ++i) { var cur = order[i] if (cur.from < ch && cur.to > ch) { return i } if (cur.to == ch) { if (cur.from != cur.to && sticky == "before") { found = i } else { bidiOther = i } } if (cur.from == ch) { if (cur.from != cur.to && sticky != "before") { found = i } else { bidiOther = i } } } return found != null ? found : bidiOther } // Bidirectional ordering algorithm // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm // that this (partially) implements. // One-char codes used for character types: // L (L): Left-to-Right // R (R): Right-to-Left // r (AL): Right-to-Left Arabic // 1 (EN): European Number // + (ES): European Number Separator // % (ET): European Number Terminator // n (AN): Arabic Number // , (CS): Common Number Separator // m (NSM): Non-Spacing Mark // b (BN): Boundary Neutral // s (B): Paragraph Separator // t (S): Segment Separator // w (WS): Whitespace // N (ON): Other Neutrals // Returns null if characters are ordered as they appear // (left-to-right), or an array of sections ({from, to, level} // objects) in the order in which they occur visually. var bidiOrdering = (function() { // Character types for codepoints 0 to 0xff var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN" // Character types for codepoints 0x600 to 0x6f9 var arabicTypes = "nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111" function charType(code) { if (code <= 0xf7) { return lowTypes.charAt(code) } else if (0x590 <= code && code <= 0x5f4) { return "R" } else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) } else if (0x6ee <= code && code <= 0x8ac) { return "r" } else if (0x2000 <= code && code <= 0x200b) { return "w" } else if (code == 0x200c) { return "b" } else { return "L" } } var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/ var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/ function BidiSpan(level, from, to) { this.level = level this.from = from; this.to = to } return function(str, direction) { var outerType = direction == "ltr" ? "L" : "R" if (str.length == 0 \|\| direction == "ltr" && !bidiRE.test(str)) { return false } var len = str.length, types = [] for (var i = 0; i < len; ++i) { types.push(charType(str.charCodeAt(i))) } // W1. Examine each non-spacing mark (NSM) in the level run, and // change the type of the NSM to the type of the previous // character. If the NSM is at the start of the level run, it will // get the type of sor. for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) { var type = types[i$1] if (type == "m") { types[i$1] = prev } else { prev = type } } // W2. Search backwards from each instance of a European number // until the first strong type (R, L, AL, or sor) is found. If an // AL is found, change the type of the European number to Arabic // number. // W3. Change all ALs to R. for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) { var type$1 = types[i$2] if (type$1 == "1" && cur == "r") { types[i$2] = "n" } else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == "r") { types[i$2] = "R" } } } // W4. A single European separator between two European numbers // changes to a European number. A single common separator between // two numbers of the same type changes to that type. for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) { var type$2 = types[i$3] if (type$2 == "+" && prev$1 == "1" && types[i$3+1] == "1") { types[i$3] = "1" } else if (type$2 == "," && prev$1 == types[i$3+1] && (prev$1 == "1" \|\| prev$1 == "n")) { types[i$3] = prev$1 } prev$1 = type$2 } // W5. A sequence of European terminators adjacent to European // numbers changes to all European numbers. // W6. Otherwise, separators and terminators change to Other // Neutral. for (var i$4 = 0; i$4 < len; ++i$4) { var type$3 = types[i$4] if (type$3 == ",") { types[i$4] = "N" } else if (type$3 == "%") { var end = (void 0) for (end = i$4 + 1; end < len && types[end] == "%"; ++end) {} var replace = (i$4 && types[i$4-1] == "!") \|\| (end < len && types[end] == "1") ? "1" : "N" for (var j = i$4; j < end; ++j) { types[j] = replace } i$4 = end - 1 } } // W7. Search backwards from each instance of a European number // until the first strong type (R, L, or sor) is found. If an L is // found, then change the type of the European number to L. for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) { var type$4 = types[i$5] if (cur$1 == "L" && type$4 == "1") { types[i$5] = "L" } else if (isStrong.test(type$4)) { cur$1 = type$4 } } // N1. A sequence of neutrals takes the direction of the // surrounding strong text if the text on both sides has the same // direction. European and Arabic numbers act as if they were R in // terms of their influence on neutrals. Start-of-level-run (sor) // and end-of-level-run (eor) are used at level run boundaries. // N2. Any remaining neutrals take the embedding direction. for (var i$6 = 0; i$6 < len; ++i$6) { if (isNeutral.test(types[i$6])) { var end$1 = (void 0) for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {} var before = (i$6 ? types[i$6-1] : outerType) == "L" var after = (end$1 < len ? types[end$1] : outerType) == "L" var replace$1 = before == after ? (before ? "L" : "R") : outerType for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1 } i$6 = end$1 - 1 } } // Here we depart from the documented algorithm, in order to avoid // building up an actual levels array. Since there are only three // levels (0, 1, 2) in an implementation that doesn't take // explicit embedding into account, we can build up the order on // the fly, without following the level-based algorithm. var order = [], m for (var i$7 = 0; i$7 < len;) { if (countsAsLeft.test(types[i$7])) { var start = i$7 for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {} order.push(new BidiSpan(0, start, i$7)) } else { var pos = i$7, at = order.length for (++i$7; i$7 < len && types[i$7] != "L"; ++i$7) {} for (var j$2 = pos; j$2 < i$7;) { if (countsAsNum.test(types[j$2])) { if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)) } var nstart = j$2 for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {} order.splice(at, 0, new BidiSpan(2, nstart, j$2)) pos = j$2 } else { ++j$2 } } if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)) } } } if (order[0].level == 1 && (m = str.match(/^\s+/))) { order[0].from = m[0].length order.unshift(new BidiSpan(0, 0, m[0].length)) } if (lst(order).level == 1 && (m = str.match(/\s+$/))) { lst(order).to -= m[0].length order.push(new BidiSpan(0, len - m[0].length, len)) } return direction == "rtl" ? order.reverse() : order } })() // Get the bidi ordering for the given line (and cache it). Returns // false for lines that are fully left-to-right, and an array of // BidiSpan objects otherwise. function getOrder(line, direction) { var order = line.order if (order == null) { order = line.order = bidiOrdering(line.text, direction) } return order } function moveCharLogically(line, ch, dir) { var target = skipExtendingChars(line.text, ch + dir, dir) return target < 0 \|\| target > line.text.length ? null : target } function moveLogically(line, start, dir) { var ch = moveCharLogically(line, start.ch, dir) return ch == null ? null : new Pos(start.line, ch, dir < 0 ? "after" : "before") } function endOfLine(visually, cm, lineObj, lineNo, dir) { if (visually) { var order = getOrder(lineObj, cm.doc.direction) if (order) { var part = dir < 0 ? lst(order) : order[0] var moveInStorageOrder = (dir < 0) == (part.level == 1) var sticky = moveInStorageOrder ? "after" : "before" var ch // With a wrapped rtl chunk (possibly spanning multiple bidi parts), // it could be that the last bidi part is not on the last visual line, // since visual lines contain content order-consecutive chunks. // Thus, in rtl, we are looking for the first (content-order) character // in the rtl chunk that is on the last line (that is, the same line // as the last (content-order) character). if (part.level > 0) { var prep = prepareMeasureForLine(cm, lineObj) ch = dir < 0 ? lineObj.text.length - 1 : 0 var targetTop = measureCharPrepared(cm, prep, ch).top ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch) if (sticky == "before") { ch = moveCharLogically(lineObj, ch, 1, true) } } else { ch = dir < 0 ? part.to : part.from } return new Pos(lineNo, ch, sticky) } } return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? "before" : "after") } function moveVisually(cm, line, start, dir) { var bidi = getOrder(line, cm.doc.direction) if (!bidi) { return moveLogically(line, start, dir) } if (start.ch >= line.text.length) { start.ch = line.text.length start.sticky = "before" } else if (start.ch <= 0) { start.ch = 0 start.sticky = "after" } var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos] if (cm.doc.direction == "ltr" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) { // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines, // nothing interesting happens. return moveLogically(line, start, dir) } var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); } var prep var getWrappedLineExtent = function (ch) { if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} } prep = prep \|\| prepareMeasureForLine(cm, line) return wrappedLineExtentChar(cm, line, prep, ch) } var wrappedLineExtent = getWrappedLineExtent(start.sticky == "before" ? mv(start, -1) : start.ch) if (cm.doc.direction == "rtl" \|\| part.level == 1) { var moveInStorageOrder = (part.level == 1) == (dir < 0) var ch = mv(start, moveInStorageOrder ? 1 : -1) if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) { // Case 2: We move within an rtl part or in an rtl editor on the same visual line var sticky = moveInStorageOrder ? "before" : "after" return new Pos(start.line, ch, sticky) } } // Case 3: Could not move within this bidi part in this visual line, so leave // the current bidi part var searchInVisualLine = function (partPos, dir, wrappedLineExtent) { var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder ? new Pos(start.line, mv(ch, 1), "before") : new Pos(start.line, ch, "after"); } for (; partPos >= 0 && partPos < bidi.length; partPos += dir) { var part = bidi[partPos] var moveInStorageOrder = (dir > 0) == (part.level != 1) var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1) if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) } ch = moveInStorageOrder ? part.from : mv(part.to, -1) if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) } } } // Case 3a: Look for other bidi parts on the same visual line var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent) if (res) { return res } // Case 3b: Look for other bidi parts on the next visual line var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1) if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) { res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh)) if (res) { return res } } // Case 4: Nowhere to move return null } // EVENT HANDLING // Lightweight event framework. on/off also work on DOM nodes, // registering native DOM handlers. var noHandlers = [] var on = function(emitter, type, f) { if (emitter.addEventListener) { emitter.addEventListener(type, f, false) } else if (emitter.attachEvent) { emitter.attachEvent("on" + type, f) } else { var map = emitter._handlers \|\| (emitter._handlers = {}) map[type] = (map[type] \|\| noHandlers).concat(f) } } function getHandlers(emitter, type) { return emitter._handlers && emitter._handlers[type] \|\| noHandlers } function off(emitter, type, f) { if (emitter.removeEventListener) { emitter.removeEventListener(type, f, false) } else if (emitter.detachEvent) { emitter.detachEvent("on" + type, f) } else { var map = emitter._handlers, arr = map && map[type] if (arr) { var index = indexOf(arr, f) if (index > -1) { map[type] = arr.slice(0, index).concat(arr.slice(index + 1)) } } } } function signal(emitter, type /, values.../) { var handlers = getHandlers(emitter, type) if (!handlers.length) { return } var args = Array.prototype.slice.call(arguments, 2) for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args) } } // The DOM events that CodeMirror handles can be overridden by // registering a (non-DOM) handler on the editor for the event name, // and preventDefault-ing the event in that handler. function signalDOMEvent(cm, e, override) { if (typeof e == "string") { e = {type: e, preventDefault: function() { this.defaultPrevented = true }} } signal(cm, override \|\| e.type, cm, e) return e_defaultPrevented(e) \|\| e.codemirrorIgnore } function signalCursorActivity(cm) { var arr = cm._handlers && cm._handlers.cursorActivity if (!arr) { return } var set = cm.curOp.cursorActivityHandlers \|\| (cm.curOp.cursorActivityHandlers = []) for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1) { set.push(arr[i]) } } } function hasHandler(emitter, type) { return getHandlers(emitter, type).length > 0 } // Add on and off methods to a constructor's prototype, to make // registering events on such objects more convenient. function eventMixin(ctor) { ctor.prototype.on = function(type, f) {on(this, type, f)} ctor.prototype.off = function(type, f) {off(this, type, f)} } // Due to the fact that we still support jurassic IE versions, some // compatibility wrappers are needed. function e_preventDefault(e) { if (e.preventDefault) { e.preventDefault() } else { e.returnValue = false } } function e_stopPropagation(e) { if (e.stopPropagation) { e.stopPropagation() } else { e.cancelBubble = true } } function e_defaultPrevented(e) { return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false } function e_stop(e) {e_preventDefault(e); e_stopPropagation(e)} function e_target(e) {return e.target \|\| e.srcElement} function e_button(e) { var b = e.which if (b == null) { if (e.button & 1) { b = 1 } else if (e.button & 2) { b = 3 } else if (e.button & 4) { b = 2 } } if (mac && e.ctrlKey && b == 1) { b = 3 } return b } // Detect drag-and-drop var dragAndDrop = function() { // There is some* kind of drag-and-drop support in IE6-8, but I // couldn't get it to work yet. if (ie && ie_version < 9) { return false } var div = elt('div') return "draggable" in div \|\| "dragDrop" in div }() var zwspSupported function zeroWidthElement(measure) { if (zwspSupported == null) { var test = elt("span", "\u200b") removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])) if (measure.firstChild.offsetHeight != 0) { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8) } } var node = zwspSupported ? elt("span", "\u200b") : elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px") node.setAttribute("cm-text", "") return node } // Feature-detect IE's crummy client rect reporting for bidi text var badBidiRects function hasBadBidiRects(measure) { if (badBidiRects != null) { return badBidiRects } var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA")) var r0 = range(txt, 0, 1).getBoundingClientRect() var r1 = range(txt, 1, 2).getBoundingClientRect() removeChildren(measure) if (!r0 \|\| r0.left == r0.right) { return false } // Safari returns null in some cases (#2780) return badBidiRects = (r1.right - r0.right < 3) } // See if "".split is the broken IE version, if so, provide an // alternative way to split lines. var splitLinesAuto = "\n\nb".split(/\n/).length != 3 ? function (string) { var pos = 0, result = [], l = string.length while (pos <= l) { var nl = string.indexOf("\n", pos) if (nl == -1) { nl = string.length } var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl) var rt = line.indexOf("\r") if (rt != -1) { result.push(line.slice(0, rt)) pos += rt + 1 } else { result.push(line) pos = nl + 1 } } return result } : function (string) { return string.split(/\r\n?\|\n/); } var hasSelection = window.getSelection ? function (te) { try { return te.selectionStart != te.selectionEnd } catch(e) { return false } } : function (te) { var range try {range = te.ownerDocument.selection.createRange()} catch(e) {} if (!range \|\| range.parentElement() != te) { return false } return range.compareEndPoints("StartToEnd", range) != 0 } var hasCopyEvent = (function () { var e = elt("div") if ("oncopy" in e) { return true } e.setAttribute("oncopy", "return;") return typeof e.oncopy == "function" })() var badZoomedRects = null function hasBadZoomedRects(measure) { if (badZoomedRects != null) { return badZoomedRects } var node = removeChildrenAndAdd(measure, elt("span", "x")) var normal = node.getBoundingClientRect() var fromRange = range(node, 0, 1).getBoundingClientRect() return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1 } var modes = {}; var mimeModes = {}; // Extra arguments are stored as the mode's dependencies, which is // used by (legacy) mechanisms like loadmode.js to automatically // load a mode. (Preferred mechanism is the require/define calls.) function defineMode(name, mode) { if (arguments.length > 2) { mode.dependencies = Array.prototype.slice.call(arguments, 2) } modes[name] = mode } function defineMIME(mime, spec) { mimeModes[mime] = spec } // Given a MIME type, a {name, ...options} config object, or a name // string, return a mode config object. function resolveMode(spec) { if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { spec = mimeModes[spec] } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { var found = mimeModes[spec.name] if (typeof found == "string") { found = {name: found} } spec = createObj(found, spec) spec.name = found.name } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { return resolveMode("application/xml") } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) { return resolveMode("application/json") } if (typeof spec == "string") { return {name: spec} } else { return spec \|\| {name: "null"} } } // Given a mode spec (anything that resolveMode accepts), find and // initialize an actual mode object. function getMode(options, spec) { spec = resolveMode(spec) var mfactory = modes[spec.name] if (!mfactory) { return getMode(options, "text/plain") } var modeObj = mfactory(options, spec) if (modeExtensions.hasOwnProperty(spec.name)) { var exts = modeExtensions[spec.name] for (var prop in exts) { if (!exts.hasOwnProperty(prop)) { continue } if (modeObj.hasOwnProperty(prop)) { modeObj["_" + prop] = modeObj[prop] } modeObj[prop] = exts[prop] } } modeObj.name = spec.name if (spec.helperType) { modeObj.helperType = spec.helperType } if (spec.modeProps) { for (var prop$1 in spec.modeProps) { modeObj[prop$1] = spec.modeProps[prop$1] } } return modeObj } // This can be used to attach properties to mode objects from // outside the actual mode definition. var modeExtensions = {} function extendMode(mode, properties) { var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}) copyObj(properties, exts) } function copyState(mode, state) { if (state === true) { return state } if (mode.copyState) { return mode.copyState(state) } var nstate = {} for (var n in state) { var val = state[n] if (val instanceof Array) { val = val.concat([]) } nstate[n] = val } return nstate } // Given a mode and a state (for that mode), find the inner mode and // state at the position that the state refers to. function innerMode(mode, state) { var info while (mode.innerMode) { info = mode.innerMode(state) if (!info \|\| info.mode == mode) { break } state = info.state mode = info.mode } return info \|\| {mode: mode, state: state} } function startState(mode, a1, a2) { return mode.startState ? mode.startState(a1, a2) : true } // STRING STREAM // Fed to the mode parsers, provides helper functions to make // parsers more succinct. var StringStream = function(string, tabSize) { this.pos = this.start = 0 this.string = string this.tabSize = tabSize \|\| 8 this.lastColumnPos = this.lastColumnValue = 0 this.lineStart = 0 }; StringStream.prototype.eol = function () {return this.pos >= this.string.length}; StringStream.prototype.sol = function () {return this.pos == this.lineStart}; StringStream.prototype.peek = function () {return this.string.charAt(this.pos) \|\| undefined}; StringStream.prototype.next = function () { if (this.pos < this.string.length) { return this.string.charAt(this.pos++) } }; StringStream.prototype.eat = function (match) { var ch = this.string.charAt(this.pos) var ok if (typeof match == "string") { ok = ch == match } else { ok = ch && (match.test ? match.test(ch) : match(ch)) } if (ok) {++this.pos; return ch} }; StringStream.prototype.eatWhile = function (match) { var start = this.pos while (this.eat(match)){} return this.pos > start }; StringStream.prototype.eatSpace = function () { var this$1 = this; var start = this.pos while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this$1.pos } return this.pos > start }; StringStream.prototype.skipToEnd = function () {this.pos = this.string.length}; StringStream.prototype.skipTo = function (ch) { var found = this.string.indexOf(ch, this.pos) if (found > -1) {this.pos = found; return true} }; StringStream.prototype.backUp = function (n) {this.pos -= n}; StringStream.prototype.column = function () { if (this.lastColumnPos < this.start) { this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue) this.lastColumnPos = this.start } return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0) }; StringStream.prototype.indentation = function () { return countColumn(this.string, null, this.tabSize) - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0) }; StringStream.prototype.match = function (pattern, consume, caseInsensitive) { if (typeof pattern == "string") { var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; } var substr = this.string.substr(this.pos, pattern.length) if (cased(substr) == cased(pattern)) { if (consume !== false) { this.pos += pattern.length } return true } } else { var match = this.string.slice(this.pos).match(pattern) if (match && match.index > 0) { return null } if (match && consume !== false) { this.pos += match[0].length } return match } }; StringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)}; StringStream.prototype.hideFirstChars = function (n, inner) { this.lineStart += n try { return inner() } finally { this.lineStart -= n } }; // Compute a style array (an array starting with a mode generation // -- for invalidation -- followed by pairs of end positions and // style strings), which is used to highlight the tokens on the // line. function highlightLine(cm, line, state, forceToEnd) { // A styles array always starts with a number identifying the // mode/overlays that it is based on (for easy invalidation). var st = [cm.state.modeGen], lineClasses = {} // Compute the base array of styles runMode(cm, line.text, cm.doc.mode, state, function (end, style) { return st.push(end, style); }, lineClasses, forceToEnd) // Run overlays, adjust style array. var loop = function ( o ) { var overlay = cm.state.overlays[o], i = 1, at = 0 runMode(cm, line.text, overlay.mode, true, function (end, style) { var start = i // Ensure there's a token end at the current position, and that i points at it while (at < end) { var i_end = st[i] if (i_end > end) { st.splice(i, 1, end, st[i+1], i_end) } i += 2 at = Math.min(end, i_end) } if (!style) { return } if (overlay.opaque) { st.splice(start, i - start, end, "overlay " + style) i = start + 2 } else { for (; start < i; start += 2) { var cur = st[start+1] st[start+1] = (cur ? cur + " " : "") + "overlay " + style } } }, lineClasses) }; for (var o = 0; o < cm.state.overlays.length; ++o) loop( o ); return {styles: st, classes: lineClasses.bgClass \|\| lineClasses.textClass ? lineClasses : null} } function getLineStyles(cm, line, updateFrontier) { if (!line.styles \|\| line.styles[0] != cm.state.modeGen) { var state = getStateBefore(cm, lineNo(line)) var result = highlightLine(cm, line, line.text.length > cm.options.maxHighlightLength ? copyState(cm.doc.mode, state) : state) line.stateAfter = state line.styles = result.styles if (result.classes) { line.styleClasses = result.classes } else if (line.styleClasses) { line.styleClasses = null } if (updateFrontier === cm.doc.frontier) { cm.doc.frontier++ } } return line.styles } function getStateBefore(cm, n, precise) { var doc = cm.doc, display = cm.display if (!doc.mode.startState) { return true } var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter if (!state) { state = startState(doc.mode) } else { state = copyState(doc.mode, state) } doc.iter(pos, n, function (line) { processLine(cm, line.text, state) var save = pos == n - 1 \|\| pos % 5 == 0 \|\| pos >= display.viewFrom && pos < display.viewTo line.stateAfter = save ? copyState(doc.mode, state) : null ++pos }) if (precise) { doc.frontier = pos } return state } // Lightweight form of highlight -- proceed over this line and // update state, but don't save a style array. Used for lines that // aren't currently visible. function processLine(cm, text, state, startAt) { var mode = cm.doc.mode var stream = new StringStream(text, cm.options.tabSize) stream.start = stream.pos = startAt \|\| 0 if (text == "") { callBlankLine(mode, state) } while (!stream.eol()) { readToken(mode, stream, state) stream.start = stream.pos } } function callBlankLine(mode, state) { if (mode.blankLine) { return mode.blankLine(state) } if (!mode.innerMode) { return } var inner = innerMode(mode, state) if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) } } function readToken(mode, stream, state, inner) { for (var i = 0; i < 10; i++) { if (inner) { inner[0] = innerMode(mode, state).mode } var style = mode.token(stream, state) if (stream.pos > stream.start) { return style } } throw new Error("Mode " + mode.name + " failed to advance stream.") } // Utility for getTokenAt and getLineTokens function takeToken(cm, pos, precise, asArray) { var getObj = function (copy) { return ({ start: stream.start, end: stream.pos, string: stream.current(), type: style \|\| null, state: copy ? copyState(doc.mode, state) : state }); } var doc = cm.doc, mode = doc.mode, style pos = clipPos(doc, pos) var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise) var stream = new StringStream(line.text, cm.options.tabSize), tokens if (asArray) { tokens = [] } while ((asArray \|\| stream.pos < pos.ch) && !stream.eol()) { stream.start = stream.pos style = readToken(mode, stream, state) if (asArray) { tokens.push(getObj(true)) } } return asArray ? tokens : getObj() } function extractLineClasses(type, output) { if (type) { for (;;) { var lineClass = type.match(/(?:^\|\s+)line-(background-)?(\S+)/) if (!lineClass) { break } type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length) var prop = lineClass[1] ? "bgClass" : "textClass" if (output[prop] == null) { output[prop] = lineClass[2] } else if (!(new RegExp("(?:^\|\s)" + lineClass[2] + "(?:$\|\s)")).test(output[prop])) { output[prop] += " " + lineClass[2] } } } return type } // Run the given mode's parser over a line, calling f for each token. function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) { var flattenSpans = mode.flattenSpans if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans } var curStart = 0, curStyle = null var stream = new StringStream(text, cm.options.tabSize), style var inner = cm.options.addModeClass && [null] if (text == "") { extractLineClasses(callBlankLine(mode, state), lineClasses) } while (!stream.eol()) { if (stream.pos > cm.options.maxHighlightLength) { flattenSpans = false if (forceToEnd) { processLine(cm, text, state, stream.pos) } stream.pos = text.length style = null } else { style = extractLineClasses(readToken(mode, stream, state, inner), lineClasses) } if (inner) { var mName = inner[0].name if (mName) { style = "m-" + (style ? mName + " " + style : mName) } } if (!flattenSpans \|\| curStyle != style) { while (curStart < stream.start) { curStart = Math.min(stream.start, curStart + 5000) f(curStart, curStyle) } curStyle = style } stream.start = stream.pos } while (curStart < stream.pos) { // Webkit seems to refuse to render text nodes longer than 57444 // characters, and returns inaccurate measurements in nodes // starting around 5000 chars. var pos = Math.min(stream.pos, curStart + 5000) f(pos, curStyle) curStart = pos } } // Finds the line to start with when starting a parse. Tries to // find a line with a stateAfter, so that it can start with a // valid state. If that fails, it returns the line with the // smallest indentation, which tends to need the least context to // parse correctly. function findStartLine(cm, n, precise) { var minindent, minline, doc = cm.doc var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100) for (var search = n; search > lim; --search) { if (search <= doc.first) { return doc.first } var line = getLine(doc, search - 1) if (line.stateAfter && (!precise \|\| search <= doc.frontier)) { return search } var indented = countColumn(line.text, null, cm.options.tabSize) if (minline == null \|\| minindent > indented) { minline = search - 1 minindent = indented } } return minline } // LINE DATA STRUCTURE // Line objects. These hold state related to a line, including // highlighting info (the styles array). var Line = function(text, markedSpans, estimateHeight) { this.text = text attachMarkedSpans(this, markedSpans) this.height = estimateHeight ? estimateHeight(this) : 1 }; Line.prototype.lineNo = function () { return lineNo(this) }; eventMixin(Line) // Change the content (text, markers) of a line. Automatically // invalidates cached information and tries to re-estimate the // line's height. function updateLine(line, text, markedSpans, estimateHeight) { line.text = text if (line.stateAfter) { line.stateAfter = null } if (line.styles) { line.styles = null } if (line.order != null) { line.order = null } detachMarkedSpans(line) attachMarkedSpans(line, markedSpans) var estHeight = estimateHeight ? estimateHeight(line) : 1 if (estHeight != line.height) { updateLineHeight(line, estHeight) } } // Detach a line from the document tree and its markers. function cleanUpLine(line) { line.parent = null detachMarkedSpans(line) } // Convert a style as returned by a mode (either null, or a string // containing one or more styles) to a CSS style. This is cached, // and also looks for line-wide styles. var styleToClassCache = {}; var styleToClassCacheWithMode = {}; function interpretTokenStyle(style, options) { if (!style \|\| /^\s$/.test(style)) { return null } var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache return cache[style] \|\| (cache[style] = style.replace(/\S+/g, "cm-$&")) } // Render the DOM representation of the text of a line. Also builds // up a 'line map', which points at the DOM nodes that represent // specific stretches of text, and is used by the measuring code. // The returned object contains the DOM node, this map, and // information about line-wide styles that were set by the mode. function buildLineContent(cm, lineView) { // The padding-right forces the element to have a 'border', which // is needed on Webkit to be able to get line-level bounding // rectangles for it (in measureChar). var content = eltP("span", null, null, webkit ? "padding-right: .1px" : null) var builder = {pre: eltP("pre", [content], "CodeMirror-line"), content: content, col: 0, pos: 0, cm: cm, trailingSpace: false, splitSpaces: (ie \|\| webkit) && cm.getOption("lineWrapping")} lineView.measure = {} // Iterate over the logical lines that make up this visual line. for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) { var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0) builder.pos = 0 builder.addToken = buildToken // Optionally wire in some hacks into the token-rendering // algorithm, to deal with browser quirks. if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction))) { builder.addToken = buildTokenBadBidi(builder.addToken, order) } builder.map = [] var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line) insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate)) if (line.styleClasses) { if (line.styleClasses.bgClass) { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass \|\| "") } if (line.styleClasses.textClass) { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass \|\| "") } } // Ensure at least a single node is present, for measuring. if (builder.map.length == 0) { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))) } // Store the map and a cache object for the current logical line if (i == 0) { lineView.measure.map = builder.map lineView.measure.cache = {} } else { ;(lineView.measure.maps \|\| (lineView.measure.maps = [])).push(builder.map) ;(lineView.measure.caches \|\| (lineView.measure.caches = [])).push({}) } } // See issue #2901 if (webkit) { var last = builder.content.lastChild if (/\bcm-tab\b/.test(last.className) \|\| (last.querySelector && last.querySelector(".cm-tab"))) { builder.content.className = "cm-tab-wrap-hack" } } signal(cm, "renderLine", cm, lineView.line, builder.pre) if (builder.pre.className) { builder.textClass = joinClasses(builder.pre.className, builder.textClass \|\| "") } return builder } function defaultSpecialCharPlaceholder(ch) { var token = elt("span", "\u2022", "cm-invalidchar") token.title = "\\u" + ch.charCodeAt(0).toString(16) token.setAttribute("aria-label", token.title) return token } // Build up the DOM representation for a single token, and add it to // the line map. Takes care to render special characters separately. function buildToken(builder, text, style, startStyle, endStyle, title, css) { if (!text) { return } var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text var special = builder.cm.state.specialChars, mustWrap = false var content if (!special.test(text)) { builder.col += text.length content = document.createTextNode(displayText) builder.map.push(builder.pos, builder.pos + text.length, content) if (ie && ie_version < 9) { mustWrap = true } builder.pos += text.length } else { content = document.createDocumentFragment() var pos = 0 while (true) { special.lastIndex = pos var m = special.exec(text) var skipped = m ? m.index - pos : text.length - pos if (skipped) { var txt = document.createTextNode(displayText.slice(pos, pos + skipped)) if (ie && ie_version < 9) { content.appendChild(elt("span", [txt])) } else { content.appendChild(txt) } builder.map.push(builder.pos, builder.pos + skipped, txt) builder.col += skipped builder.pos += skipped } if (!m) { break } pos += skipped + 1 var txt$1 = (void 0) if (m[0] == "\t") { var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize txt$1 = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")) txt$1.setAttribute("role", "presentation") txt$1.setAttribute("cm-text", "\t") builder.col += tabWidth } else if (m[0] == "\r" \|\| m[0] == "\n") { txt$1 = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar")) txt$1.setAttribute("cm-text", m[0]) builder.col += 1 } else { txt$1 = builder.cm.options.specialCharPlaceholder(m[0]) txt$1.setAttribute("cm-text", m[0]) if (ie && ie_version < 9) { content.appendChild(elt("span", [txt$1])) } else { content.appendChild(txt$1) } builder.col += 1 } builder.map.push(builder.pos, builder.pos + 1, txt$1) builder.pos++ } } builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32 if (style \|\| startStyle \|\| endStyle \|\| mustWrap \|\| css) { var fullStyle = style \|\| "" if (startStyle) { fullStyle += startStyle } if (endStyle) { fullStyle += endStyle } var token = elt("span", [content], fullStyle, css) if (title) { token.title = title } return builder.content.appendChild(token) } builder.content.appendChild(content) } function splitSpaces(text, trailingBefore) { if (text.length > 1 && !/ /.test(text)) { return text } var spaceBefore = trailingBefore, result = "" for (var i = 0; i < text.length; i++) { var ch = text.charAt(i) if (ch == " " && spaceBefore && (i == text.length - 1 \|\| text.charCodeAt(i + 1) == 32)) { ch = "\u00a0" } result += ch spaceBefore = ch == " " } return result } // Work around nonsense dimensions being reported for stretches of // right-to-left text. function buildTokenBadBidi(inner, order) { return function (builder, text, style, startStyle, endStyle, title, css) { style = style ? style + " cm-force-border" : "cm-force-border" var start = builder.pos, end = start + text.length for (;;) { // Find the part that overlaps with the start of this text var part = (void 0) for (var i = 0; i < order.length; i++) { part = order[i] if (part.to > start && part.from <= start) { break } } if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, title, css) } inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css) startStyle = null text = text.slice(part.to - start) start = part.to } } } function buildCollapsedSpan(builder, size, marker, ignoreWidget) { var widget = !ignoreWidget && marker.widgetNode if (widget) { builder.map.push(builder.pos, builder.pos + size, widget) } if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) { if (!widget) { widget = builder.content.appendChild(document.createElement("span")) } widget.setAttribute("cm-marker", marker.id) } if (widget) { builder.cm.display.input.setUneditable(widget) builder.content.appendChild(widget) } builder.pos += size builder.trailingSpace = false } // Outputs a number of spans to make up a line, taking highlighting // and marked text into account. function insertLineContent(line, builder, styles) { var spans = line.markedSpans, allText = line.text, at = 0 if (!spans) { for (var i$1 = 1; i$1 < styles.length; i$1+=2) { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)) } return } var len = allText.length, pos = 0, i = 1, text = "", style, css var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed for (;;) { if (nextChange == pos) { // Update current marker set spanStyle = spanEndStyle = spanStartStyle = title = css = "" collapsed = null; nextChange = Infinity var foundBookmarks = [], endStyles = (void 0) for (var j = 0; j < spans.length; ++j) { var sp = spans[j], m = sp.marker if (m.type == "bookmark" && sp.from == pos && m.widgetNode) { foundBookmarks.push(m) } else if (sp.from <= pos && (sp.to == null \|\| sp.to > pos \|\| m.collapsed && sp.to == pos && sp.from == pos)) { if (sp.to != null && sp.to != pos && nextChange > sp.to) { nextChange = sp.to spanEndStyle = "" } if (m.className) { spanStyle += " " + m.className } if (m.css) { css = (css ? css + ";" : "") + m.css } if (m.startStyle && sp.from == pos) { spanStartStyle += " " + m.startStyle } if (m.endStyle && sp.to == nextChange) { (endStyles \|\| (endStyles = [])).push(m.endStyle, sp.to) } if (m.title && !title) { title = m.title } if (m.collapsed && (!collapsed \|\| compareCollapsedMarkers(collapsed.marker, m) < 0)) { collapsed = sp } } else if (sp.from > pos && nextChange > sp.from) { nextChange = sp.from } } if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2) { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += " " + endStyles[j$1] } } } if (!collapsed \|\| collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2) { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]) } } if (collapsed && (collapsed.from \|\| 0) == pos) { buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos, collapsed.marker, collapsed.from == null) if (collapsed.to == null) { return } if (collapsed.to == pos) { collapsed = false } } } if (pos >= len) { break } var upto = Math.min(len, nextChange) while (true) { if (text) { var end = pos + text.length if (!collapsed) { var tokenText = end > upto ? text.slice(0, upto - pos) : text builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title, css) } if (end >= upto) {text = text.slice(upto - pos); pos = upto; break} pos = end spanStartStyle = "" } text = allText.slice(at, at = styles[i++]) style = interpretTokenStyle(styles[i++], builder.cm.options) } } } // These objects are used to represent the visible (currently drawn) // part of the document. A LineView may correspond to multiple // logical lines, if those are connected by collapsed ranges. function LineView(doc, line, lineN) { // The starting line this.line = line // Continuing lines, if any this.rest = visualLineContinued(line) // Number of logical lines in this visual line this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1 this.node = this.text = null this.hidden = lineIsHidden(doc, line) } // Create a range of LineView objects for the given lines. function buildViewArray(cm, from, to) { var array = [], nextPos for (var pos = from; pos < to; pos = nextPos) { var view = new LineView(cm.doc, getLine(cm.doc, pos), pos) nextPos = pos + view.size array.push(view) } return array } var operationGroup = null function pushOperation(op) { if (operationGroup) { operationGroup.ops.push(op) } else { op.ownsGroup = operationGroup = { ops: [op], delayedCallbacks: [] } } } function fireCallbacksForOps(group) { // Calls delayed callbacks and cursorActivity handlers until no // new ones appear var callbacks = group.delayedCallbacks, i = 0 do { for (; i < callbacks.length; i++) { callbacks[i].call(null) } for (var j = 0; j < group.ops.length; j++) { var op = group.ops[j] if (op.cursorActivityHandlers) { while (op.cursorActivityCalled < op.cursorActivityHandlers.length) { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm) } } } } while (i < callbacks.length) } function finishOperation(op, endCb) { var group = op.ownsGroup if (!group) { return } try { fireCallbacksForOps(group) } finally { operationGroup = null endCb(group) } } var orphanDelayedCallbacks = null // Often, we want to signal events at a point where we are in the // middle of some work, but don't want the handler to start calling // other methods on the editor, which might be in an inconsistent // state or simply not expect any other events to happen. // signalLater looks whether there are any handlers, and schedules // them to be executed when the last operation ends, or, if no // operation is active, when a timeout fires. function signalLater(emitter, type /, values.../) { var arr = getHandlers(emitter, type) if (!arr.length) { return } var args = Array.prototype.slice.call(arguments, 2), list if (operationGroup) { list = operationGroup.delayedCallbacks } else if (orphanDelayedCallbacks) { list = orphanDelayedCallbacks } else { list = orphanDelayedCallbacks = [] setTimeout(fireOrphanDelayed, 0) } var loop = function ( i ) { list.push(function () { return arr[i].apply(null, args); }) }; for (var i = 0; i < arr.length; ++i) loop( i ); } function fireOrphanDelayed() { var delayed = orphanDelayedCallbacks orphanDelayedCallbacks = null for (var i = 0; i < delayed.length; ++i) { delayed[i]() } } // When an aspect of a line changes, a string is added to // lineView.changes. This updates the relevant part of the line's // DOM structure. function updateLineForChanges(cm, lineView, lineN, dims) { for (var j = 0; j < lineView.changes.length; j++) { var type = lineView.changes[j] if (type == "text") { updateLineText(cm, lineView) } else if (type == "gutter") { updateLineGutter(cm, lineView, lineN, dims) } else if (type == "class") { updateLineClasses(cm, lineView) } else if (type == "widget") { updateLineWidgets(cm, lineView, dims) } } lineView.changes = null } // Lines with gutter elements, widgets or a background class need to // be wrapped, and have the extra elements added to the wrapper div function ensureLineWrapped(lineView) { if (lineView.node == lineView.text) { lineView.node = elt("div", null, null, "position: relative") if (lineView.text.parentNode) { lineView.text.parentNode.replaceChild(lineView.node, lineView.text) } lineView.node.appendChild(lineView.text) if (ie && ie_version < 8) { lineView.node.style.zIndex = 2 } } return lineView.node } function updateLineBackground(cm, lineView) { var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass \|\| "") : lineView.line.bgClass if (cls) { cls += " CodeMirror-linebackground" } if (lineView.background) { if (cls) { lineView.background.className = cls } else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null } } else if (cls) { var wrap = ensureLineWrapped(lineView) lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild) cm.display.input.setUneditable(lineView.background) } } // Wrapper around buildLineContent which will reuse the structure // in display.externalMeasured when possible. function getLineContent(cm, lineView) { var ext = cm.display.externalMeasured if (ext && ext.line == lineView.line) { cm.display.externalMeasured = null lineView.measure = ext.measure return ext.built } return buildLineContent(cm, lineView) } // Redraw the line's text. Interacts with the background and text // classes because the mode may output tokens that influence these // classes. function updateLineText(cm, lineView) { var cls = lineView.text.className var built = getLineContent(cm, lineView) if (lineView.text == lineView.node) { lineView.node = built.pre } lineView.text.parentNode.replaceChild(built.pre, lineView.text) lineView.text = built.pre if (built.bgClass != lineView.bgClass \|\| built.textClass != lineView.textClass) { lineView.bgClass = built.bgClass lineView.textClass = built.textClass updateLineClasses(cm, lineView) } else if (cls) { lineView.text.className = cls } } function updateLineClasses(cm, lineView) { updateLineBackground(cm, lineView) if (lineView.line.wrapClass) { ensureLineWrapped(lineView).className = lineView.line.wrapClass } else if (lineView.node != lineView.text) { lineView.node.className = "" } var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass \|\| "") : lineView.line.textClass lineView.text.className = textClass \|\| "" } function updateLineGutter(cm, lineView, lineN, dims) { if (lineView.gutter) { lineView.node.removeChild(lineView.gutter) lineView.gutter = null } if (lineView.gutterBackground) { lineView.node.removeChild(lineView.gutterBackground) lineView.gutterBackground = null } if (lineView.line.gutterClass) { var wrap = ensureLineWrapped(lineView) lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass, ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px; width: " + (dims.gutterTotalWidth) + "px")) cm.display.input.setUneditable(lineView.gutterBackground) wrap.insertBefore(lineView.gutterBackground, lineView.text) } var markers = lineView.line.gutterMarkers if (cm.options.lineNumbers \|\| markers) { var wrap$1 = ensureLineWrapped(lineView) var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px")) cm.display.input.setUneditable(gutterWrap) wrap$1.insertBefore(gutterWrap, lineView.text) if (lineView.line.gutterClass) { gutterWrap.className += " " + lineView.line.gutterClass } if (cm.options.lineNumbers && (!markers \|\| !markers["CodeMirror-linenumbers"])) { lineView.lineNumber = gutterWrap.appendChild( elt("div", lineNumberFor(cm.options, lineN), "CodeMirror-linenumber CodeMirror-gutter-elt", ("left: " + (dims.gutterLeft["CodeMirror-linenumbers"]) + "px; width: " + (cm.display.lineNumInnerWidth) + "px"))) } if (markers) { for (var k = 0; k < cm.options.gutters.length; ++k) { var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id] if (found) { gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", ("left: " + (dims.gutterLeft[id]) + "px; width: " + (dims.gutterWidth[id]) + "px"))) } } } } } function updateLineWidgets(cm, lineView, dims) { if (lineView.alignable) { lineView.alignable = null } for (var node = lineView.node.firstChild, next = (void 0); node; node = next) { next = node.nextSibling if (node.className == "CodeMirror-linewidget") { lineView.node.removeChild(node) } } insertLineWidgets(cm, lineView, dims) } // Build a line's DOM representation from scratch function buildLineElement(cm, lineView, lineN, dims) { var built = getLineContent(cm, lineView) lineView.text = lineView.node = built.pre if (built.bgClass) { lineView.bgClass = built.bgClass } if (built.textClass) { lineView.textClass = built.textClass } updateLineClasses(cm, lineView) updateLineGutter(cm, lineView, lineN, dims) insertLineWidgets(cm, lineView, dims) return lineView.node } // A lineView may contain multiple logical lines (when merged by // collapsed spans). The widgets for all of them need to be drawn. function insertLineWidgets(cm, lineView, dims) { insertLineWidgetsFor(cm, lineView.line, lineView, dims, true) if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++) { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false) } } } function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) { if (!line.widgets) { return } var wrap = ensureLineWrapped(lineView) for (var i = 0, ws = line.widgets; i < ws.length; ++i) { var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget") if (!widget.handleMouseEvents) { node.setAttribute("cm-ignore-events", "true") } positionLineWidget(widget, node, lineView, dims) cm.display.input.setUneditable(node) if (allowAbove && widget.above) { wrap.insertBefore(node, lineView.gutter \|\| lineView.text) } else { wrap.appendChild(node) } signalLater(widget, "redraw") } } function positionLineWidget(widget, node, lineView, dims) { if (widget.noHScroll) { ;(lineView.alignable \|\| (lineView.alignable = [])).push(node) var width = dims.wrapperWidth node.style.left = dims.fixedPos + "px" if (!widget.coverGutter) { width -= dims.gutterTotalWidth node.style.paddingLeft = dims.gutterTotalWidth + "px" } node.style.width = width + "px" } if (widget.coverGutter) { node.style.zIndex = 5 node.style.position = "relative" if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + "px" } } } function widgetHeight(widget) { if (widget.height != null) { return widget.height } var cm = widget.doc.cm if (!cm) { return 0 } if (!contains(document.body, widget.node)) { var parentStyle = "position: relative;" if (widget.coverGutter) { parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;" } if (widget.noHScroll) { parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;" } removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle)) } return widget.height = widget.node.parentNode.offsetHeight } // Return true when the given mouse event happened in a widget function eventInWidget(display, e) { for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { if (!n \|\| (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") \|\| (n.parentNode == display.sizer && n != display.mover)) { return true } } } // POSITION MEASUREMENT function paddingTop(display) {return display.lineSpace.offsetTop} function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight} function paddingH(display) { if (display.cachedPaddingH) { return display.cachedPaddingH } var e = removeChildrenAndAdd(display.measure, elt("pre", "x")) var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)} if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data } return data } function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth } function displayWidth(cm) { return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth } function displayHeight(cm) { return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight } // Ensure the lineView.wrapping.heights array is populated. This is // an array of bottom offsets for the lines that make up a drawn // line. When lineWrapping is on, there might be more than one // height. function ensureLineHeights(cm, lineView, rect) { var wrapping = cm.options.lineWrapping var curWidth = wrapping && displayWidth(cm) if (!lineView.measure.heights \|\| wrapping && lineView.measure.width != curWidth) { var heights = lineView.measure.heights = [] if (wrapping) { lineView.measure.width = curWidth var rects = lineView.text.firstChild.getClientRects() for (var i = 0; i < rects.length - 1; i++) { var cur = rects[i], next = rects[i + 1] if (Math.abs(cur.bottom - next.bottom) > 2) { heights.push((cur.bottom + next.top) / 2 - rect.top) } } } heights.push(rect.bottom - rect.top) } } // Find a line map (mapping character offsets to text nodes) and a // measurement cache for the given line number. (A line view might // contain multiple lines when collapsed ranges are present.) function mapFromLineView(lineView, line, lineN) { if (lineView.line == line) { return {map: lineView.measure.map, cache: lineView.measure.cache} } for (var i = 0; i < lineView.rest.length; i++) { if (lineView.rest[i] == line) { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } } for (var i$1 = 0; i$1 < lineView.rest.length; i$1++) { if (lineNo(lineView.rest[i$1]) > lineN) { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } } } // Render a line into the hidden node display.externalMeasured. Used // when measurement is needed for a line that's not in the viewport. function updateExternalMeasurement(cm, line) { line = visualLine(line) var lineN = lineNo(line) var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN) view.lineN = lineN var built = view.built = buildLineContent(cm, view) view.text = built.pre removeChildrenAndAdd(cm.display.lineMeasure, built.pre) return view } // Get a {top, bottom, left, right} box (in line-local coordinates) // for a given character. function measureChar(cm, line, ch, bias) { return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias) } // Find a line view that corresponds to the given line number. function findViewForLine(cm, lineN) { if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo) { return cm.display.view[findViewIndex(cm, lineN)] } var ext = cm.display.externalMeasured if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size) { return ext } } // Measurement can be split in two steps, the set-up work that // applies to the whole line, and the measurement of the actual // character. Functions like coordsChar, that need to do a lot of // measurements in a row, can thus ensure that the set-up work is // only done once. function prepareMeasureForLine(cm, line) { var lineN = lineNo(line) var view = findViewForLine(cm, lineN) if (view && !view.text) { view = null } else if (view && view.changes) { updateLineForChanges(cm, view, lineN, getDimensions(cm)) cm.curOp.forceUpdate = true } if (!view) { view = updateExternalMeasurement(cm, line) } var info = mapFromLineView(view, line, lineN) return { line: line, view: view, rect: null, map: info.map, cache: info.cache, before: info.before, hasHeights: false } } // Given a prepared measurement object, measures the position of an // actual character (or fetches it from the cache). function measureCharPrepared(cm, prepared, ch, bias, varHeight) { if (prepared.before) { ch = -1 } var key = ch + (bias \|\| ""), found if (prepared.cache.hasOwnProperty(key)) { found = prepared.cache[key] } else { if (!prepared.rect) { prepared.rect = prepared.view.text.getBoundingClientRect() } if (!prepared.hasHeights) { ensureLineHeights(cm, prepared.view, prepared.rect) prepared.hasHeights = true } found = measureCharInner(cm, prepared, ch, bias) if (!found.bogus) { prepared.cache[key] = found } } return {left: found.left, right: found.right, top: varHeight ? found.rtop : found.top, bottom: varHeight ? found.rbottom : found.bottom} } var nullRect = {left: 0, right: 0, top: 0, bottom: 0} function nodeAndOffsetInLineMap(map, ch, bias) { var node, start, end, collapse, mStart, mEnd // First, search the line map for the text node corresponding to, // or closest to, the target character. for (var i = 0; i < map.length; i += 3) { mStart = map[i] mEnd = map[i + 1] if (ch < mStart) { start = 0; end = 1 collapse = "left" } else if (ch < mEnd) { start = ch - mStart end = start + 1 } else if (i == map.length - 3 \|\| ch == mEnd && map[i + 3] > ch) { end = mEnd - mStart start = end - 1 if (ch >= mEnd) { collapse = "right" } } if (start != null) { node = map[i + 2] if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right")) { collapse = bias } if (bias == "left" && start == 0) { while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) { node = map[(i -= 3) + 2] collapse = "left" } } if (bias == "right" && start == mEnd - mStart) { while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) { node = map[(i += 3) + 2] collapse = "right" } } break } } return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd} } function getUsefulRect(rects, bias) { var rect = nullRect if (bias == "left") { for (var i = 0; i < rects.length; i++) { if ((rect = rects[i]).left != rect.right) { break } } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) { if ((rect = rects[i$1]).left != rect.right) { break } } } return rect } function measureCharInner(cm, prepared, ch, bias) { var place = nodeAndOffsetInLineMap(prepared.map, ch, bias) var node = place.node, start = place.start, end = place.end, collapse = place.collapse var rect if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates. for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start } while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end } if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) { rect = node.parentNode.getBoundingClientRect() } else { rect = getUsefulRect(range(node, start, end).getClientRects(), bias) } if (rect.left \|\| rect.right \|\| start == 0) { break } end = start start = start - 1 collapse = "right" } if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect) } } else { // If it is a widget, simply get the box for the whole widget. if (start > 0) { collapse = bias = "right" } var rects if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1) { rect = rects[bias == "right" ? rects.length - 1 : 0] } else { rect = node.getBoundingClientRect() } } if (ie && ie_version < 9 && !start && (!rect \|\| !rect.left && !rect.right)) { var rSpan = node.parentNode.getClientRects()[0] if (rSpan) { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom} } else { rect = nullRect } } var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top var mid = (rtop + rbot) / 2 var heights = prepared.view.measure.heights var i = 0 for (; i < heights.length - 1; i++) { if (mid < heights[i]) { break } } var top = i ? heights[i - 1] : 0, bot = heights[i] var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left, right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left, top: top, bottom: bot} if (!rect.left && !rect.right) { result.bogus = true } if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot } return result } // Work around problem with bounding client rects on ranges being // returned incorrectly when zoomed on IE10 and below. function maybeUpdateRectForZooming(measure, rect) { if (!window.screen \|\| screen.logicalXDPI == null \|\| screen.logicalXDPI == screen.deviceXDPI \|\| !hasBadZoomedRects(measure)) { return rect } var scaleX = screen.logicalXDPI / screen.deviceXDPI var scaleY = screen.logicalYDPI / screen.deviceYDPI return {left: rect.left scaleX, right: rect.right * scaleX, top: rect.top * scaleY, bottom: rect.bottom * scaleY} } function clearLineMeasurementCacheFor(lineView) { if (lineView.measure) { lineView.measure.cache = {} lineView.measure.heights = null if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++) { lineView.measure.caches[i] = {} } } } } function clearLineMeasurementCache(cm) { cm.display.externalMeasure = null removeChildren(cm.display.lineMeasure) for (var i = 0; i < cm.display.view.length; i++) { clearLineMeasurementCacheFor(cm.display.view[i]) } } function clearCaches(cm) { clearLineMeasurementCache(cm) cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true } cm.display.lineNumChars = null } function pageScrollX() { return window.pageXOffset \|\| (document.documentElement \|\| document.body).scrollLeft } function pageScrollY() { return window.pageYOffset \|\| (document.documentElement \|\| document.body).scrollTop } // Converts a {top, bottom, left, right} box from line-local // coordinates into another coordinate system. Context may be one of // "line", "div" (display.lineDiv), "local"./null (editor), "window", // or "page". function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) { if (!includeWidgets && lineObj.widgets) { for (var i = 0; i < lineObj.widgets.length; ++i) { if (lineObj.widgets[i].above) { var size = widgetHeight(lineObj.widgets[i]) rect.top += size; rect.bottom += size } } } if (context == "line") { return rect } if (!context) { context = "local" } var yOff = heightAtLine(lineObj) if (context == "local") { yOff += paddingTop(cm.display) } else { yOff -= cm.display.viewOffset } if (context == "page" \|\| context == "window") { var lOff = cm.display.lineSpace.getBoundingClientRect() yOff += lOff.top + (context == "window" ? 0 : pageScrollY()) var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()) rect.left += xOff; rect.right += xOff } rect.top += yOff; rect.bottom += yOff return rect } // Coverts a box from "div" coords to another coordinate system. // Context may be "window", "page", "div", or "local"./null. function fromCoordSystem(cm, coords, context) { if (context == "div") { return coords } var left = coords.left, top = coords.top // First move into "page" coordinate system if (context == "page") { left -= pageScrollX() top -= pageScrollY() } else if (context == "local" \|\| !context) { var localBox = cm.display.sizer.getBoundingClientRect() left += localBox.left top += localBox.top } var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect() return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top} } function charCoords(cm, pos, context, lineObj, bias) { if (!lineObj) { lineObj = getLine(cm.doc, pos.line) } return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context) } // Returns a box for a given cursor position, which may have an // 'other' property containing the position of the secondary cursor // on a bidi boundary. // A cursor Pos(line, char, "before") is on the same visual line as `char - 1` // and after `char - 1` in writing order of `char - 1` // A cursor Pos(line, char, "after") is on the same visual line as `char` // and before `char` in writing order of `char` // Examples (upper-case letters are RTL, lower-case are LTR): // Pos(0, 1, ...) // before after // ab a\|b a\|b // aB a\|B aB\| // Ab \|Ab A\|b // AB B\|A B\|A // Every position after the last character on a line is considered to stick // to the last character on the line. function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) { lineObj = lineObj \|\| getLine(cm.doc, pos.line) if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj) } function get(ch, right) { var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight) if (right) { m.left = m.right; } else { m.right = m.left } return intoCoordSystem(cm, lineObj, m, context) } var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky if (ch >= lineObj.text.length) { ch = lineObj.text.length sticky = "before" } else if (ch <= 0) { ch = 0 sticky = "after" } if (!order) { return get(sticky == "before" ? ch - 1 : ch, sticky == "before") } function getBidi(ch, partPos, invert) { var part = order[partPos], right = (part.level % 2) != 0 return get(invert ? ch - 1 : ch, right != invert) } var partPos = getBidiPartAt(order, ch, sticky) var other = bidiOther var val = getBidi(ch, partPos, sticky == "before") if (other != null) { val.other = getBidi(ch, other, sticky != "before") } return val } // Used to cheaply estimate the coordinates for a position. Used for // intermediate scroll updates. function estimateCoords(cm, pos) { var left = 0 pos = clipPos(cm.doc, pos) if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch } var lineObj = getLine(cm.doc, pos.line) var top = heightAtLine(lineObj) + paddingTop(cm.display) return {left: left, right: left, top: top, bottom: top + lineObj.height} } // Positions returned by coordsChar contain some extra information. // xRel is the relative x position of the input coordinates compared // to the found position (so xRel > 0 means the coordinates are to // the right of the character position, for example). When outside // is true, that means the coordinates lie outside the line's // vertical range. function PosWithInfo(line, ch, sticky, outside, xRel) { var pos = Pos(line, ch, sticky) pos.xRel = xRel if (outside) { pos.outside = true } return pos } // Compute the character position closest to the given coordinates. // Input must be lineSpace-local ("div" coordinate system). function coordsChar(cm, x, y) { var doc = cm.doc y += cm.display.viewOffset if (y < 0) { return PosWithInfo(doc.first, 0, null, true, -1) } var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1 if (lineN > last) { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, true, 1) } if (x < 0) { x = 0 } var lineObj = getLine(doc, lineN) for (;;) { var found = coordsCharInner(cm, lineObj, lineN, x, y) var merged = collapsedSpanAtEnd(lineObj) var mergedPos = merged && merged.find(0, true) if (merged && (found.ch > mergedPos.from.ch \|\| found.ch == mergedPos.from.ch && found.xRel > 0)) { lineN = lineNo(lineObj = mergedPos.to.line) } else { return found } } } function wrappedLineExtent(cm, lineObj, preparedMeasure, y) { var measure = function (ch) { return intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, ch), "line"); } var end = lineObj.text.length var begin = findFirst(function (ch) { return measure(ch - 1).bottom <= y; }, end, 0) end = findFirst(function (ch) { return measure(ch).top > y; }, begin, end) return {begin: begin, end: end} } function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) { var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), "line").top return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop) } function coordsCharInner(cm, lineObj, lineNo, x, y) { y -= heightAtLine(lineObj) var begin = 0, end = lineObj.text.length var preparedMeasure = prepareMeasureForLine(cm, lineObj) var pos var order = getOrder(lineObj, cm.doc.direction) if (order) { if (cm.options.lineWrapping) { ;var assign; ((assign = wrappedLineExtent(cm, lineObj, preparedMeasure, y), begin = assign.begin, end = assign.end, assign)) } pos = new Pos(lineNo, begin) var beginLeft = cursorCoords(cm, pos, "line", lineObj, preparedMeasure).left var dir = beginLeft < x ? 1 : -1 var prevDiff, diff = beginLeft - x, prevPos do { prevDiff = diff prevPos = pos pos = moveVisually(cm, lineObj, pos, dir) if (pos == null \|\| pos.ch < begin \|\| end <= (pos.sticky == "before" ? pos.ch - 1 : pos.ch)) { pos = prevPos break } diff = cursorCoords(cm, pos, "line", lineObj, preparedMeasure).left - x } while ((dir < 0) != (diff < 0) && (Math.abs(diff) <= Math.abs(prevDiff))) if (Math.abs(diff) > Math.abs(prevDiff)) { if ((diff < 0) == (prevDiff < 0)) { throw new Error("Broke out of infinite loop in coordsCharInner") } pos = prevPos } } else { var ch = findFirst(function (ch) { var box = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, ch), "line") if (box.top > y) { // For the cursor stickiness end = Math.min(ch, end) return true } else if (box.bottom <= y) { return false } else if (box.left > x) { return true } else if (box.right < x) { return false } else { return (x - box.left < box.right - x) } }, begin, end) ch = skipExtendingChars(lineObj.text, ch, 1) pos = new Pos(lineNo, ch, ch == end ? "before" : "after") } var coords = cursorCoords(cm, pos, "line", lineObj, preparedMeasure) if (y < coords.top \|\| coords.bottom < y) { pos.outside = true } pos.xRel = x < coords.left ? -1 : (x > coords.right ? 1 : 0) return pos } var measureText // Compute the default text height. function textHeight(display) { if (display.cachedTextHeight != null) { return display.cachedTextHeight } if (measureText == null) { measureText = elt("pre") // Measure a bunch of lines, for browsers that compute // fractional heights. for (var i = 0; i < 49; ++i) { measureText.appendChild(document.createTextNode("x")) measureText.appendChild(elt("br")) } measureText.appendChild(document.createTextNode("x")) } removeChildrenAndAdd(display.measure, measureText) var height = measureText.offsetHeight / 50 if (height > 3) { display.cachedTextHeight = height } removeChildren(display.measure) return height \|\| 1 } // Compute the default character width. function charWidth(display) { if (display.cachedCharWidth != null) { return display.cachedCharWidth } var anchor = elt("span", "xxxxxxxxxx") var pre = elt("pre", [anchor]) removeChildrenAndAdd(display.measure, pre) var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10 if (width > 2) { display.cachedCharWidth = width } return width \|\| 10 } // Do a bulk-read of the DOM positions and sizes needed to draw the // view, so that we don't interleave reading and writing to the DOM. function getDimensions(cm) { var d = cm.display, left = {}, width = {} var gutterLeft = d.gutters.clientLeft for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft width[cm.options.gutters[i]] = n.clientWidth } return {fixedPos: compensateForHScroll(d), gutterTotalWidth: d.gutters.offsetWidth, gutterLeft: left, gutterWidth: width, wrapperWidth: d.wrapper.clientWidth} } // Computes display.scroller.scrollLeft + display.gutters.offsetWidth, // but using getBoundingClientRect to get a sub-pixel-accurate // result. function compensateForHScroll(display) { return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left } // Returns a function that estimates the height of a line, to use as // first approximation until the line becomes visible (and is thus // properly measurable). function estimateHeight(cm) { var th = textHeight(cm.display), wrapping = cm.options.lineWrapping var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3) return function (line) { if (lineIsHidden(cm.doc, line)) { return 0 } var widgetsHeight = 0 if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) { if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height } } } if (wrapping) { return widgetsHeight + (Math.ceil(line.text.length / perLine) \|\| 1) * th } else { return widgetsHeight + th } } } function estimateLineHeights(cm) { var doc = cm.doc, est = estimateHeight(cm) doc.iter(function (line) { var estHeight = est(line) if (estHeight != line.height) { updateLineHeight(line, estHeight) } }) } // Given a mouse event, find the corresponding position. If liberal // is false, it checks whether a gutter or scrollbar was clicked, // and returns null if it was. forRect is used by rectangular // selections, and tries to estimate a character position even for // coordinates beyond the right of the text. function posFromMouse(cm, e, liberal, forRect) { var display = cm.display if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") { return null } var x, y, space = display.lineSpace.getBoundingClientRect() // Fails unpredictably on IE[67] when mouse is dragged around quickly. try { x = e.clientX - space.left; y = e.clientY - space.top } catch (e) { return null } var coords = coordsChar(cm, x, y), line if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) { var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff)) } return coords } // Find the view element corresponding to a given line. Return null // when the line isn't visible. function findViewIndex(cm, n) { if (n >= cm.display.viewTo) { return null } n -= cm.display.viewFrom if (n < 0) { return null } var view = cm.display.view for (var i = 0; i < view.length; i++) { n -= view[i].size if (n < 0) { return i } } } function updateSelection(cm) { cm.display.input.showSelection(cm.display.input.prepareSelection()) } function prepareSelection(cm, primary) { var doc = cm.doc, result = {} var curFragment = result.cursors = document.createDocumentFragment() var selFragment = result.selection = document.createDocumentFragment() for (var i = 0; i < doc.sel.ranges.length; i++) { if (primary === false && i == doc.sel.primIndex) { continue } var range = doc.sel.ranges[i] if (range.from().line >= cm.display.viewTo \|\| range.to().line < cm.display.viewFrom) { continue } var collapsed = range.empty() if (collapsed \|\| cm.options.showCursorWhenSelecting) { drawSelectionCursor(cm, range.head, curFragment) } if (!collapsed) { drawSelectionRange(cm, range, selFragment) } } return result } // Draws a cursor for the given range function drawSelectionCursor(cm, head, output) { var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine) var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor")) cursor.style.left = pos.left + "px" cursor.style.top = pos.top + "px" cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px" if (pos.other) { // Secondary cursor, shown when on a 'jump' in bi-directional text var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor")) otherCursor.style.display = "" otherCursor.style.left = pos.other.left + "px" otherCursor.style.top = pos.other.top + "px" otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px" } } // Draws the given range as a highlighted selection function drawSelectionRange(cm, range, output) { var display = cm.display, doc = cm.doc var fragment = document.createDocumentFragment() var padding = paddingH(cm.display), leftSide = padding.left var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right function add(left, top, width, bottom) { if (top < 0) { top = 0 } top = Math.round(top) bottom = Math.round(bottom) 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"))) } function drawForLine(line, fromArg, toArg) { var lineObj = getLine(doc, line) var lineLen = lineObj.text.length var start, end function coords(ch, bias) { return charCoords(cm, Pos(line, ch), "div", lineObj, bias) } iterateBidiSections(getOrder(lineObj, doc.direction), fromArg \|\| 0, toArg == null ? lineLen : toArg, function (from, to, dir) { var leftPos = coords(from, "left"), rightPos, left, right if (from == to) { rightPos = leftPos left = right = leftPos.left } else { rightPos = coords(to - 1, "right") if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp } left = leftPos.left right = rightPos.right } if (fromArg == null && from == 0) { left = leftSide } if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part add(left, leftPos.top, null, leftPos.bottom) left = leftSide if (leftPos.bottom < rightPos.top) { add(left, leftPos.bottom, null, rightPos.top) } } if (toArg == null && to == lineLen) { right = rightSide } if (!start \|\| leftPos.top < start.top \|\| leftPos.top == start.top && leftPos.left < start.left) { start = leftPos } if (!end \|\| rightPos.bottom > end.bottom \|\| rightPos.bottom == end.bottom && rightPos.right > end.right) { end = rightPos } if (left < leftSide + 1) { left = leftSide } add(left, rightPos.top, right - left, rightPos.bottom) }) return {start: start, end: end} } var sFrom = range.from(), sTo = range.to() if (sFrom.line == sTo.line) { drawForLine(sFrom.line, sFrom.ch, sTo.ch) } else { var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line) var singleVLine = visualLine(fromLine) == visualLine(toLine) var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start if (singleVLine) { if (leftEnd.top < rightStart.top - 2) { add(leftEnd.right, leftEnd.top, null, leftEnd.bottom) add(leftSide, rightStart.top, rightStart.left, rightStart.bottom) } else { add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom) } } if (leftEnd.bottom < rightStart.top) { add(leftSide, leftEnd.bottom, null, rightStart.top) } } output.appendChild(fragment) } // Cursor-blinking function restartBlink(cm) { if (!cm.state.focused) { return } var display = cm.display clearInterval(display.blinker) var on = true display.cursorDiv.style.visibility = "" if (cm.options.cursorBlinkRate > 0) { display.blinker = setInterval(function () { return display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; }, cm.options.cursorBlinkRate) } else if (cm.options.cursorBlinkRate < 0) { display.cursorDiv.style.visibility = "hidden" } } function ensureFocus(cm) { if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm) } } function delayBlurEvent(cm) { cm.state.delayingBlurEvent = true setTimeout(function () { if (cm.state.delayingBlurEvent) { cm.state.delayingBlurEvent = false onBlur(cm) } }, 100) } function onFocus(cm, e) { if (cm.state.delayingBlurEvent) { cm.state.delayingBlurEvent = false } if (cm.options.readOnly == "nocursor") { return } if (!cm.state.focused) { signal(cm, "focus", cm, e) cm.state.focused = true addClass(cm.display.wrapper, "CodeMirror-focused") // This test prevents this from firing when a context // menu is closed (since the input reset would kill the // select-all detection hack) if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) { cm.display.input.reset() if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20) } // Issue #1730 } cm.display.input.receivedFocus() } restartBlink(cm) } function onBlur(cm, e) { if (cm.state.delayingBlurEvent) { return } if (cm.state.focused) { signal(cm, "blur", cm, e) cm.state.focused = false rmClass(cm.display.wrapper, "CodeMirror-focused") } clearInterval(cm.display.blinker) setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false } }, 150) } // Re-align line numbers and gutter marks to compensate for // horizontal scrolling. function alignHorizontally(cm) { var display = cm.display, view = display.view if (!display.alignWidgets && (!display.gutters.firstChild \|\| !cm.options.fixedGutter)) { return } var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft var gutterW = display.gutters.offsetWidth, left = comp + "px" for (var i = 0; i < view.length; i++) { if (!view[i].hidden) { if (cm.options.fixedGutter) { if (view[i].gutter) { view[i].gutter.style.left = left } if (view[i].gutterBackground) { view[i].gutterBackground.style.left = left } } var align = view[i].alignable if (align) { for (var j = 0; j < align.length; j++) { align[j].style.left = left } } } } if (cm.options.fixedGutter) { display.gutters.style.left = (comp + gutterW) + "px" } } // Used to ensure that the line number gutter is still the right // size for the current document size. Returns true when an update // is needed. function maybeUpdateLineNumberWidth(cm) { if (!cm.options.lineNumbers) { return false } var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display if (last.length != display.lineNumChars) { var test = display.measure.appendChild(elt("div", [elt("div", last)], "CodeMirror-linenumber CodeMirror-gutter-elt")) var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW display.lineGutter.style.width = "" display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1 display.lineNumWidth = display.lineNumInnerWidth + padding display.lineNumChars = display.lineNumInnerWidth ? last.length : -1 display.lineGutter.style.width = display.lineNumWidth + "px" updateGutterSpace(cm) return true } return false } // Read the actual heights of the rendered lines, and update their // stored heights to match. function updateHeightsInViewport(cm) { var display = cm.display var prevBottom = display.lineDiv.offsetTop for (var i = 0; i < display.view.length; i++) { var cur = display.view[i], height = (void 0) if (cur.hidden) { continue } if (ie && ie_version < 8) { var bot = cur.node.offsetTop + cur.node.offsetHeight height = bot - prevBottom prevBottom = bot } else { var box = cur.node.getBoundingClientRect() height = box.bottom - box.top } var diff = cur.line.height - height if (height < 2) { height = textHeight(display) } if (diff > .001 \|\| diff < -.001) { updateLineHeight(cur.line, height) updateWidgetHeight(cur.line) if (cur.rest) { for (var j = 0; j < cur.rest.length; j++) { updateWidgetHeight(cur.rest[j]) } } } } } // Read and store the height of line widgets associated with the // given line. function updateWidgetHeight(line) { if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i) { line.widgets[i].height = line.widgets[i].node.parentNode.offsetHeight } } } // Compute the lines that are visible in a given viewport (defaults // the the current scroll position). viewport may contain top, // height, and ensure (see op.scrollToPos) properties. function visibleLines(display, doc, viewport) { var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop top = Math.floor(top - paddingTop(display)) var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom) // Ensure is a {from: {line, ch}, to: {line, ch}} object, and // forces those lines into the viewport (if possible). if (viewport && viewport.ensure) { var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line if (ensureFrom < from) { from = ensureFrom to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight) } else if (Math.min(ensureTo, doc.lastLine()) >= to) { from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight) to = ensureTo } } return {from: from, to: Math.max(to, from + 1)} } // Sync the scrollable area and scrollbars, ensure the viewport // covers the visible area. function setScrollTop(cm, val) { if (Math.abs(cm.doc.scrollTop - val) < 2) { return } cm.doc.scrollTop = val if (!gecko) { updateDisplaySimple(cm, {top: val}) } if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val } cm.display.scrollbars.setScrollTop(val) if (gecko) { updateDisplaySimple(cm) } startWorker(cm, 100) } // Sync scroller and scrollbar, ensure the gutter elements are // aligned. function setScrollLeft(cm, val, isScroller) { if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) { return } val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth) cm.doc.scrollLeft = val alignHorizontally(cm) if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val } cm.display.scrollbars.setScrollLeft(val) } // Since the delta values reported on mouse wheel events are // unstandardized between browsers and even browser versions, and // generally horribly unpredictable, this code starts by measuring // the scroll effect that the first few mouse wheel events have, // and, from that, detects the way it can convert deltas to pixel // offsets afterwards. // // The reason we want to know the amount a wheel event will scroll // is that it gives us a chance to update the display before the // actual scrolling happens, reducing flickering. var wheelSamples = 0; var wheelPixelsPerUnit = null; // Fill in a browser-detected starting value on browsers where we // know one. These don't have to be accurate -- the result of them // being wrong would just be a slight flicker on the first wheel // scroll (if it is large enough). if (ie) { wheelPixelsPerUnit = -.53 } else if (gecko) { wheelPixelsPerUnit = 15 } else if (chrome) { wheelPixelsPerUnit = -.7 } else if (safari) { wheelPixelsPerUnit = -1/3 } function wheelEventDelta(e) { var dx = e.wheelDeltaX, dy = e.wheelDeltaY if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail } if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail } else if (dy == null) { dy = e.wheelDelta } return {x: dx, y: dy} } function wheelEventPixels(e) { var delta = wheelEventDelta(e) delta.x = wheelPixelsPerUnit delta.y = wheelPixelsPerUnit return delta } function onScrollWheel(cm, e) { var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y var display = cm.display, scroll = display.scroller // Quit if there's nothing to scroll here var canScrollX = scroll.scrollWidth > scroll.clientWidth var canScrollY = scroll.scrollHeight > scroll.clientHeight if (!(dx && canScrollX \|\| dy && canScrollY)) { return } // Webkit browsers on OS X abort momentum scrolls when the target // of the scroll event is removed from the scrollable element. // This hack (see related code in patchDisplay) makes sure the // element is kept around. if (dy && mac && webkit) { outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) { for (var i = 0; i < view.length; i++) { if (view[i].node == cur) { cm.display.currentWheelTarget = cur break outer } } } } // On some browsers, horizontal scrolling will cause redraws to // happen before the gutter has been realigned, causing it to // wriggle around in a most unseemly way. When we have an // estimated pixels/delta value, we just handle horizontal // scrolling entirely here. It'll be slightly off from native, but // better than glitching out. if (dx && !gecko && !presto && wheelPixelsPerUnit != null) { if (dy && canScrollY) { setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))) } setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth))) // Only prevent default scrolling if vertical scrolling is // actually possible. Otherwise, it causes vertical scroll // jitter on OSX trackpads when deltaX is small and deltaY // is large (issue #3579) if (!dy \|\| (dy && canScrollY)) { e_preventDefault(e) } display.wheelStartX = null // Abort measurement, if in progress return } // 'Project' the visible viewport to cover the area that is being // scrolled into view (if we know enough to estimate it). if (dy && wheelPixelsPerUnit != null) { var pixels = dy * wheelPixelsPerUnit var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight if (pixels < 0) { top = Math.max(0, top + pixels - 50) } else { bot = Math.min(cm.doc.height, bot + pixels + 50) } updateDisplaySimple(cm, {top: top, bottom: bot}) } if (wheelSamples < 20) { if (display.wheelStartX == null) { display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop display.wheelDX = dx; display.wheelDY = dy setTimeout(function () { if (display.wheelStartX == null) { return } var movedX = scroll.scrollLeft - display.wheelStartX var movedY = scroll.scrollTop - display.wheelStartY var sample = (movedY && display.wheelDY && movedY / display.wheelDY) \|\| (movedX && display.wheelDX && movedX / display.wheelDX) display.wheelStartX = display.wheelStartY = null if (!sample) { return } wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1) ++wheelSamples }, 200) } else { display.wheelDX += dx; display.wheelDY += dy } } } // SCROLLBARS // Prepare DOM reads needed to update the scrollbars. Done in one // shot to minimize update/measure roundtrips. function measureForScrollbars(cm) { var d = cm.display, gutterW = d.gutters.offsetWidth var docH = Math.round(cm.doc.height + paddingVert(cm.display)) return { clientHeight: d.scroller.clientHeight, viewHeight: d.wrapper.clientHeight, scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth, viewWidth: d.wrapper.clientWidth, barLeft: cm.options.fixedGutter ? gutterW : 0, docHeight: docH, scrollHeight: docH + scrollGap(cm) + d.barHeight, nativeBarWidth: d.nativeBarWidth, gutterWidth: gutterW } } var NativeScrollbars = function(place, scroll, cm) { this.cm = cm var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar") var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar") place(vert); place(horiz) on(vert, "scroll", function () { if (vert.clientHeight) { scroll(vert.scrollTop, "vertical") } }) on(horiz, "scroll", function () { if (horiz.clientWidth) { scroll(horiz.scrollLeft, "horizontal") } }) this.checkedZeroWidth = false // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = "18px" } }; NativeScrollbars.prototype.update = function (measure) { var needsH = measure.scrollWidth > measure.clientWidth + 1 var needsV = measure.scrollHeight > measure.clientHeight + 1 var sWidth = measure.nativeBarWidth if (needsV) { this.vert.style.display = "block" this.vert.style.bottom = needsH ? sWidth + "px" : "0" var totalHeight = measure.viewHeight - (needsH ? sWidth : 0) // A bug in IE8 can cause this value to be negative, so guard it. this.vert.firstChild.style.height = Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px" } else { this.vert.style.display = "" this.vert.firstChild.style.height = "0" } if (needsH) { this.horiz.style.display = "block" this.horiz.style.right = needsV ? sWidth + "px" : "0" this.horiz.style.left = measure.barLeft + "px" var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0) this.horiz.firstChild.style.width = Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + "px" } else { this.horiz.style.display = "" this.horiz.firstChild.style.width = "0" } if (!this.checkedZeroWidth && measure.clientHeight > 0) { if (sWidth == 0) { this.zeroWidthHack() } this.checkedZeroWidth = true } return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0} }; NativeScrollbars.prototype.setScrollLeft = function (pos) { if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos } if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz) } }; NativeScrollbars.prototype.setScrollTop = function (pos) { if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos } if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert) } }; NativeScrollbars.prototype.zeroWidthHack = function () { var w = mac && !mac_geMountainLion ? "12px" : "18px" this.horiz.style.height = this.vert.style.width = w this.horiz.style.pointerEvents = this.vert.style.pointerEvents = "none" this.disableHoriz = new Delayed this.disableVert = new Delayed }; NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay) { bar.style.pointerEvents = "auto" function maybeDisable() { // To find out whether the scrollbar is still visible, we // check whether the element under the pixel in the bottom // left corner of the scrollbar box is the scrollbar box // itself (when the bar is still visible) or its filler child // (when the bar is hidden). If it is still visible, we keep // it enabled, if it's hidden, we disable pointer events. var box = bar.getBoundingClientRect() var elt = document.elementFromPoint(box.left + 1, box.bottom - 1) if (elt != bar) { bar.style.pointerEvents = "none" } else { delay.set(1000, maybeDisable) } } delay.set(1000, maybeDisable) }; NativeScrollbars.prototype.clear = function () { var parent = this.horiz.parentNode parent.removeChild(this.horiz) parent.removeChild(this.vert) }; var NullScrollbars = function () {}; NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} }; NullScrollbars.prototype.setScrollLeft = function () {}; NullScrollbars.prototype.setScrollTop = function () {}; NullScrollbars.prototype.clear = function () {}; function updateScrollbars(cm, measure) { if (!measure) { measure = measureForScrollbars(cm) } var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight updateScrollbarsInner(cm, measure) for (var i = 0; i < 4 && startWidth != cm.display.barWidth \|\| startHeight != cm.display.barHeight; i++) { if (startWidth != cm.display.barWidth && cm.options.lineWrapping) { updateHeightsInViewport(cm) } updateScrollbarsInner(cm, measureForScrollbars(cm)) startWidth = cm.display.barWidth; startHeight = cm.display.barHeight } } // Re-synchronize the fake scrollbars with the actual size of the // content. function updateScrollbarsInner(cm, measure) { var d = cm.display var sizes = d.scrollbars.update(measure) d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px" d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px" d.heightForcer.style.borderBottom = sizes.bottom + "px solid transparent" if (sizes.right && sizes.bottom) { d.scrollbarFiller.style.display = "block" d.scrollbarFiller.style.height = sizes.bottom + "px" d.scrollbarFiller.style.width = sizes.right + "px" } else { d.scrollbarFiller.style.display = "" } if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { d.gutterFiller.style.display = "block" d.gutterFiller.style.height = sizes.bottom + "px" d.gutterFiller.style.width = measure.gutterWidth + "px" } else { d.gutterFiller.style.display = "" } } var scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars} function initScrollbars(cm) { if (cm.display.scrollbars) { cm.display.scrollbars.clear() if (cm.display.scrollbars.addClass) { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass) } } cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) { cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller) // Prevent clicks in the scrollbars from killing focus on(node, "mousedown", function () { if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0) } }) node.setAttribute("cm-not-content", "true") }, function (pos, axis) { if (axis == "horizontal") { setScrollLeft(cm, pos) } else { setScrollTop(cm, pos) } }, cm) if (cm.display.scrollbars.addClass) { addClass(cm.display.wrapper, cm.display.scrollbars.addClass) } } // SCROLLING THINGS INTO VIEW // If an editor sits on the top or bottom of the window, partially // scrolled out of view, this ensures that the cursor is visible. function maybeScrollWindow(cm, rect) { if (signalDOMEvent(cm, "scrollCursorIntoView")) { return } var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null if (rect.top + box.top < 0) { doScroll = true } else if (rect.bottom + box.top > (window.innerHeight \|\| document.documentElement.clientHeight)) { doScroll = false } if (doScroll != null && !phantom) { 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;")) cm.display.lineSpace.appendChild(scrollNode) scrollNode.scrollIntoView(doScroll) cm.display.lineSpace.removeChild(scrollNode) } } // Scroll a given position into view (immediately), verifying that // it actually became visible (as line heights are accurately // measured, the position of something may 'drift' during drawing). function scrollPosIntoView(cm, pos, end, margin) { if (margin == null) { margin = 0 } var rect for (var limit = 0; limit < 5; limit++) { var changed = false var coords = cursorCoords(cm, pos) var endCoords = !end \|\| end == pos ? coords : cursorCoords(cm, end) rect = {left: Math.min(coords.left, endCoords.left), top: Math.min(coords.top, endCoords.top) - margin, right: Math.max(coords.left, endCoords.left), bottom: Math.max(coords.bottom, endCoords.bottom) + margin} var scrollPos = calculateScrollPos(cm, rect) var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft if (scrollPos.scrollTop != null) { setScrollTop(cm, scrollPos.scrollTop) if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true } } if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft) if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true } } if (!changed) { break } } return rect } // Scroll a given set of coordinates into view (immediately). function scrollIntoView(cm, rect) { var scrollPos = calculateScrollPos(cm, rect) if (scrollPos.scrollTop != null) { setScrollTop(cm, scrollPos.scrollTop) } if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft) } } // Calculate a new scroll position needed to scroll the given // rectangle into view. Returns an object with scrollTop and // scrollLeft properties. When these are undefined, the // vertical/horizontal position does not need to be adjusted. function calculateScrollPos(cm, rect) { var display = cm.display, snapMargin = textHeight(cm.display) if (rect.top < 0) { rect.top = 0 } var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop var screen = displayHeight(cm), result = {} if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen } var docBottom = cm.doc.height + paddingVert(display) var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin if (rect.top < screentop) { result.scrollTop = atTop ? 0 : rect.top } else if (rect.bottom > screentop + screen) { var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen) if (newTop != screentop) { result.scrollTop = newTop } } var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0) var tooWide = rect.right - rect.left > screenw if (tooWide) { rect.right = rect.left + screenw } if (rect.left < 10) { result.scrollLeft = 0 } else if (rect.left < screenleft) { result.scrollLeft = Math.max(0, rect.left - (tooWide ? 0 : 10)) } else if (rect.right > screenw + screenleft - 3) { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw } return result } // Store a relative adjustment to the scroll position in the current // operation (to be applied when the operation finishes). function addToScrollPos(cm, left, top) { if (left != null \|\| top != null) { resolveScrollToPos(cm) } if (left != null) { cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left } if (top != null) { cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top } } // Make sure that at the end of the operation the current cursor is // shown. function ensureCursorVisible(cm) { resolveScrollToPos(cm) var cur = cm.getCursor(), from = cur, to = cur if (!cm.options.lineWrapping) { from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur to = Pos(cur.line, cur.ch + 1) } cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin} } // When an operation has its scrollToPos property set, and another // scroll action is applied before the end of the operation, this // 'simulates' scrolling that position into view in a cheap way, so // that the effect of intermediate scroll commands is not ignored. function resolveScrollToPos(cm) { var range = cm.curOp.scrollToPos if (range) { cm.curOp.scrollToPos = null var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to) var sPos = calculateScrollPos(cm, { left: Math.min(from.left, to.left), top: Math.min(from.top, to.top) - range.margin, right: Math.max(from.right, to.right), bottom: Math.max(from.bottom, to.bottom) + range.margin }) cm.scrollTo(sPos.scrollLeft, sPos.scrollTop) } } // Operations are used to wrap a series of changes to the editor // state in such a way that each change won't have to update the // cursor and display (which would be awkward, slow, and // error-prone). Instead, display updates are batched and then all // combined and executed at once. var nextOpId = 0 // Start a new operation. function startOperation(cm) { cm.curOp = { cm: cm, viewChanged: false, // Flag that indicates that lines might need to be redrawn startHeight: cm.doc.height, // Used to detect need to update scrollbar forceUpdate: false, // Used to force a redraw updateInput: null, // Whether to reset the input textarea typing: false, // Whether this reset should be careful to leave existing text (for compositing) changeObjs: null, // Accumulated changes, for firing change events cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already selectionChanged: false, // Whether the selection needs to be redrawn updateMaxLine: false, // Set when the widest line needs to be determined anew scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet scrollToPos: null, // Used to scroll to a specific position focus: false, id: ++nextOpId // Unique ID } pushOperation(cm.curOp) } // Finish an operation, updating the display and signalling delayed events function endOperation(cm) { var op = cm.curOp finishOperation(op, function (group) { for (var i = 0; i < group.ops.length; i++) { group.ops[i].cm.curOp = null } endOperations(group) }) } // The DOM updates done when an operation finishes are batched so // that the minimum number of relayouts are required. function endOperations(group) { var ops = group.ops for (var i = 0; i < ops.length; i++) // Read DOM { endOperation_R1(ops[i]) } for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe) { endOperation_W1(ops[i$1]) } for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM { endOperation_R2(ops[i$2]) } for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe) { endOperation_W2(ops[i$3]) } for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM { endOperation_finish(ops[i$4]) } } function endOperation_R1(op) { var cm = op.cm, display = cm.display maybeClipScrollbars(cm) if (op.updateMaxLine) { findMaxLine(cm) } op.mustUpdate = op.viewChanged \|\| op.forceUpdate \|\| op.scrollTop != null \|\| op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom \|\| op.scrollToPos.to.line >= display.viewTo) \|\| display.maxLineChanged && cm.options.lineWrapping op.update = op.mustUpdate && new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate) } function endOperation_W1(op) { op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update) } function endOperation_R2(op) { var cm = op.cm, display = cm.display if (op.updatedDisplay) { updateHeightsInViewport(cm) } op.barMeasure = measureForScrollbars(cm) // If the max line changed since it was last measured, measure it, // and ensure the document's width matches it. // updateDisplay_W2 will use these properties to do the actual resizing if (display.maxLineChanged && !cm.options.lineWrapping) { op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3 cm.display.sizerWidth = op.adjustWidthTo op.barMeasure.scrollWidth = Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth) op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm)) } if (op.updatedDisplay \|\| op.selectionChanged) { op.preparedSelection = display.input.prepareSelection(op.focus) } } function endOperation_W2(op) { var cm = op.cm if (op.adjustWidthTo != null) { cm.display.sizer.style.minWidth = op.adjustWidthTo + "px" if (op.maxScrollLeft < cm.doc.scrollLeft) { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true) } cm.display.maxLineChanged = false } var takeFocus = op.focus && op.focus == activeElt() && (!document.hasFocus \|\| document.hasFocus()) if (op.preparedSelection) { cm.display.input.showSelection(op.preparedSelection, takeFocus) } if (op.updatedDisplay \|\| op.startHeight != cm.doc.height) { updateScrollbars(cm, op.barMeasure) } if (op.updatedDisplay) { setDocumentHeight(cm, op.barMeasure) } if (op.selectionChanged) { restartBlink(cm) } if (cm.state.focused && op.updateInput) { cm.display.input.reset(op.typing) } if (takeFocus) { ensureFocus(op.cm) } } function endOperation_finish(op) { var cm = op.cm, display = cm.display, doc = cm.doc if (op.updatedDisplay) { postUpdateDisplay(cm, op.update) } // Abort mouse wheel delta measurement, when scrolling explicitly if (display.wheelStartX != null && (op.scrollTop != null \|\| op.scrollLeft != null \|\| op.scrollToPos)) { display.wheelStartX = display.wheelStartY = null } // Propagate the scroll position to the actual DOM scroller if (op.scrollTop != null && (display.scroller.scrollTop != op.scrollTop \|\| op.forceScroll)) { doc.scrollTop = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop)) display.scrollbars.setScrollTop(doc.scrollTop) display.scroller.scrollTop = doc.scrollTop } if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft \|\| op.forceScroll)) { doc.scrollLeft = Math.max(0, Math.min(display.scroller.scrollWidth - display.scroller.clientWidth, op.scrollLeft)) display.scrollbars.setScrollLeft(doc.scrollLeft) display.scroller.scrollLeft = doc.scrollLeft alignHorizontally(cm) } // If we need to scroll a specific position into view, do so. if (op.scrollToPos) { var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from), clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin) maybeScrollWindow(cm, rect) } // Fire events for markers that are hidden/unidden by editing or // undoing var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers if (hidden) { for (var i = 0; i < hidden.length; ++i) { if (!hidden[i].lines.length) { signal(hidden[i], "hide") } } } if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1) { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], "unhide") } } } if (display.wrapper.offsetHeight) { doc.scrollTop = cm.display.scroller.scrollTop } // Fire change events, and delayed event handlers if (op.changeObjs) { signal(cm, "changes", cm, op.changeObjs) } if (op.update) { op.update.finish() } } // Run the given function in an operation function runInOp(cm, f) { if (cm.curOp) { return f() } startOperation(cm) try { return f() } finally { endOperation(cm) } } // Wraps a function in an operation. Returns the wrapped function. function operation(cm, f) { return function() { if (cm.curOp) { return f.apply(cm, arguments) } startOperation(cm) try { return f.apply(cm, arguments) } finally { endOperation(cm) } } } // Used to add methods to editor and doc instances, wrapping them in // operations. function methodOp(f) { return function() { if (this.curOp) { return f.apply(this, arguments) } startOperation(this) try { return f.apply(this, arguments) } finally { endOperation(this) } } } function docMethodOp(f) { return function() { var cm = this.cm if (!cm \|\| cm.curOp) { return f.apply(this, arguments) } startOperation(cm) try { return f.apply(this, arguments) } finally { endOperation(cm) } } } // Updates the display.view data structure for a given change to the // document. From and to are in pre-change coordinates. Lendiff is // the amount of lines added or subtracted by the change. This is // used for changes that span multiple lines, or change the way // lines are divided into visual lines. regLineChange (below) // registers single-line changes. function regChange(cm, from, to, lendiff) { if (from == null) { from = cm.doc.first } if (to == null) { to = cm.doc.first + cm.doc.size } if (!lendiff) { lendiff = 0 } var display = cm.display if (lendiff && to < display.viewTo && (display.updateLineNumbers == null \|\| display.updateLineNumbers > from)) { display.updateLineNumbers = from } cm.curOp.viewChanged = true if (from >= display.viewTo) { // Change after if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo) { resetView(cm) } } else if (to <= display.viewFrom) { // Change before if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) { resetView(cm) } else { display.viewFrom += lendiff display.viewTo += lendiff } } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap resetView(cm) } else if (from <= display.viewFrom) { // Top overlap var cut = viewCuttingPoint(cm, to, to + lendiff, 1) if (cut) { display.view = display.view.slice(cut.index) display.viewFrom = cut.lineN display.viewTo += lendiff } else { resetView(cm) } } else if (to >= display.viewTo) { // Bottom overlap var cut$1 = viewCuttingPoint(cm, from, from, -1) if (cut$1) { display.view = display.view.slice(0, cut$1.index) display.viewTo = cut$1.lineN } else { resetView(cm) } } else { // Gap in the middle var cutTop = viewCuttingPoint(cm, from, from, -1) var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1) if (cutTop && cutBot) { display.view = display.view.slice(0, cutTop.index) .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN)) .concat(display.view.slice(cutBot.index)) display.viewTo += lendiff } else { resetView(cm) } } var ext = display.externalMeasured if (ext) { if (to < ext.lineN) { ext.lineN += lendiff } else if (from < ext.lineN + ext.size) { display.externalMeasured = null } } } // Register a change to a single line. Type must be one of "text", // "gutter", "class", "widget" function regLineChange(cm, line, type) { cm.curOp.viewChanged = true var display = cm.display, ext = cm.display.externalMeasured if (ext && line >= ext.lineN && line < ext.lineN + ext.size) { display.externalMeasured = null } if (line < display.viewFrom \|\| line >= display.viewTo) { return } var lineView = display.view[findViewIndex(cm, line)] if (lineView.node == null) { return } var arr = lineView.changes \|\| (lineView.changes = []) if (indexOf(arr, type) == -1) { arr.push(type) } } // Clear the view. function resetView(cm) { cm.display.viewFrom = cm.display.viewTo = cm.doc.first cm.display.view = [] cm.display.viewOffset = 0 } function viewCuttingPoint(cm, oldN, newN, dir) { var index = findViewIndex(cm, oldN), diff, view = cm.display.view if (!sawCollapsedSpans \|\| newN == cm.doc.first + cm.doc.size) { return {index: index, lineN: newN} } var n = cm.display.viewFrom for (var i = 0; i < index; i++) { n += view[i].size } if (n != oldN) { if (dir > 0) { if (index == view.length - 1) { return null } diff = (n + view[index].size) - oldN index++ } else { diff = n - oldN } oldN += diff; newN += diff } while (visualLineNo(cm.doc, newN) != newN) { if (index == (dir < 0 ? 0 : view.length - 1)) { return null } newN += dir * view[index - (dir < 0 ? 1 : 0)].size index += dir } return {index: index, lineN: newN} } // Force the view to cover a given range, adding empty view element // or clipping off existing ones as needed. function adjustView(cm, from, to) { var display = cm.display, view = display.view if (view.length == 0 \|\| from >= display.viewTo \|\| to <= display.viewFrom) { display.view = buildViewArray(cm, from, to) display.viewFrom = from } else { if (display.viewFrom > from) { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view) } else if (display.viewFrom < from) { display.view = display.view.slice(findViewIndex(cm, from)) } display.viewFrom = from if (display.viewTo < to) { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)) } else if (display.viewTo > to) { display.view = display.view.slice(0, findViewIndex(cm, to)) } } display.viewTo = to } // Count the number of lines in the view whose DOM representation is // out of date (or nonexistent). function countDirtyView(cm) { var view = cm.display.view, dirty = 0 for (var i = 0; i < view.length; i++) { var lineView = view[i] if (!lineView.hidden && (!lineView.node \|\| lineView.changes)) { ++dirty } } return dirty } // HIGHLIGHT WORKER function startWorker(cm, time) { if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo) { cm.state.highlight.set(time, bind(highlightWorker, cm)) } } function highlightWorker(cm) { var doc = cm.doc if (doc.frontier < doc.first) { doc.frontier = doc.first } if (doc.frontier >= cm.display.viewTo) { return } var end = +new Date + cm.options.workTime var state = copyState(doc.mode, getStateBefore(cm, doc.frontier)) var changedLines = [] doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) { if (doc.frontier >= cm.display.viewFrom) { // Visible var oldStyles = line.styles, tooLong = line.text.length > cm.options.maxHighlightLength var highlighted = highlightLine(cm, line, tooLong ? copyState(doc.mode, state) : state, true) line.styles = highlighted.styles var oldCls = line.styleClasses, newCls = highlighted.classes if (newCls) { line.styleClasses = newCls } else if (oldCls) { line.styleClasses = null } var ischange = !oldStyles \|\| oldStyles.length != line.styles.length \|\| oldCls != newCls && (!oldCls \|\| !newCls \|\| oldCls.bgClass != newCls.bgClass \|\| oldCls.textClass != newCls.textClass) for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i] } if (ischange) { changedLines.push(doc.frontier) } line.stateAfter = tooLong ? state : copyState(doc.mode, state) } else { if (line.text.length <= cm.options.maxHighlightLength) { processLine(cm, line.text, state) } line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null } ++doc.frontier if (+new Date > end) { startWorker(cm, cm.options.workDelay) return true } }) if (changedLines.length) { runInOp(cm, function () { for (var i = 0; i < changedLines.length; i++) { regLineChange(cm, changedLines[i], "text") } }) } } // DISPLAY DRAWING var DisplayUpdate = function(cm, viewport, force) { var display = cm.display this.viewport = viewport // Store some values that we'll need later (but don't want to force a relayout for) this.visible = visibleLines(display, cm.doc, viewport) this.editorIsHidden = !display.wrapper.offsetWidth this.wrapperHeight = display.wrapper.clientHeight this.wrapperWidth = display.wrapper.clientWidth this.oldDisplayWidth = displayWidth(cm) this.force = force this.dims = getDimensions(cm) this.events = [] }; DisplayUpdate.prototype.signal = function (emitter, type) { if (hasHandler(emitter, type)) { this.events.push(arguments) } }; DisplayUpdate.prototype.finish = function () { var this$1 = this; for (var i = 0; i < this.events.length; i++) { signal.apply(null, this$1.events[i]) } }; function maybeClipScrollbars(cm) { var display = cm.display if (!display.scrollbarsClipped && display.scroller.offsetWidth) { display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth display.heightForcer.style.height = scrollGap(cm) + "px" display.sizer.style.marginBottom = -display.nativeBarWidth + "px" display.sizer.style.borderRightWidth = scrollGap(cm) + "px" display.scrollbarsClipped = true } } // Does the actual updating of the line display. Bails out // (returning false) when there is nothing to be done and forced is // false. function updateDisplayIfNeeded(cm, update) { var display = cm.display, doc = cm.doc if (update.editorIsHidden) { resetView(cm) return false } // Bail out if the visible area is already rendered and nothing changed. if (!update.force && update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo && (display.updateLineNumbers == null \|\| display.updateLineNumbers >= display.viewTo) && display.renderedView == display.view && countDirtyView(cm) == 0) { return false } if (maybeUpdateLineNumberWidth(cm)) { resetView(cm) update.dims = getDimensions(cm) } // Compute a suitable new viewport (from & to) var end = doc.first + doc.size var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first) var to = Math.min(end, update.visible.to + cm.options.viewportMargin) if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom) } if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo) } if (sawCollapsedSpans) { from = visualLineNo(cm.doc, from) to = visualLineEndNo(cm.doc, to) } var different = from != display.viewFrom \|\| to != display.viewTo \|\| display.lastWrapHeight != update.wrapperHeight \|\| display.lastWrapWidth != update.wrapperWidth adjustView(cm, from, to) display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom)) // Position the mover div to align with the current scroll position cm.display.mover.style.top = display.viewOffset + "px" var toUpdate = countDirtyView(cm) if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view && (display.updateLineNumbers == null \|\| display.updateLineNumbers >= display.viewTo)) { return false } // For big changes, we hide the enclosing element during the // update, since that speeds up the operations on most browsers. var focused = activeElt() if (toUpdate > 4) { display.lineDiv.style.display = "none" } patchDisplay(cm, display.updateLineNumbers, update.dims) if (toUpdate > 4) { display.lineDiv.style.display = "" } display.renderedView = display.view // There might have been a widget with a focused element that got // hidden or updated, if so re-focus it. if (focused && activeElt() != focused && focused.offsetHeight) { focused.focus() } // Prevent selection and cursors from interfering with the scroll // width and height. removeChildren(display.cursorDiv) removeChildren(display.selectionDiv) display.gutters.style.height = display.sizer.style.minHeight = 0 if (different) { display.lastWrapHeight = update.wrapperHeight display.lastWrapWidth = update.wrapperWidth startWorker(cm, 400) } display.updateLineNumbers = null return true } function postUpdateDisplay(cm, update) { var viewport = update.viewport for (var first = true;; first = false) { if (!first \|\| !cm.options.lineWrapping \|\| update.oldDisplayWidth == displayWidth(cm)) { // Clip forced viewport to actual scrollable area. if (viewport && viewport.top != null) { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)} } // Updated line heights might result in the drawn area not // actually covering the viewport. Keep looping until it does. update.visible = visibleLines(cm.display, cm.doc, viewport) if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo) { break } } if (!updateDisplayIfNeeded(cm, update)) { break } updateHeightsInViewport(cm) var barMeasure = measureForScrollbars(cm) updateSelection(cm) updateScrollbars(cm, barMeasure) setDocumentHeight(cm, barMeasure) } update.signal(cm, "update", cm) if (cm.display.viewFrom != cm.display.reportedViewFrom \|\| cm.display.viewTo != cm.display.reportedViewTo) { update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo) cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo } } function updateDisplaySimple(cm, viewport) { var update = new DisplayUpdate(cm, viewport) if (updateDisplayIfNeeded(cm, update)) { updateHeightsInViewport(cm) postUpdateDisplay(cm, update) var barMeasure = measureForScrollbars(cm) updateSelection(cm) updateScrollbars(cm, barMeasure) setDocumentHeight(cm, barMeasure) update.finish() } } // Sync the actual display DOM structure with display.view, removing // nodes for lines that are no longer in view, and creating the ones // that are not there yet, and updating the ones that are out of // date. function patchDisplay(cm, updateNumbersFrom, dims) { var display = cm.display, lineNumbers = cm.options.lineNumbers var container = display.lineDiv, cur = container.firstChild function rm(node) { var next = node.nextSibling // Works around a throw-scroll bug in OS X Webkit if (webkit && mac && cm.display.currentWheelTarget == node) { node.style.display = "none" } else { node.parentNode.removeChild(node) } return next } var view = display.view, lineN = display.viewFrom // Loop over the elements in the view, syncing cur (the DOM nodes // in display.lineDiv) with the view as we go. for (var i = 0; i < view.length; i++) { var lineView = view[i] if (lineView.hidden) { } else if (!lineView.node \|\| lineView.node.parentNode != container) { // Not drawn yet var node = buildLineElement(cm, lineView, lineN, dims) container.insertBefore(node, cur) } else { // Already drawn while (cur != lineView.node) { cur = rm(cur) } var updateNumber = lineNumbers && updateNumbersFrom != null && updateNumbersFrom <= lineN && lineView.lineNumber if (lineView.changes) { if (indexOf(lineView.changes, "gutter") > -1) { updateNumber = false } updateLineForChanges(cm, lineView, lineN, dims) } if (updateNumber) { removeChildren(lineView.lineNumber) lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN))) } cur = lineView.node.nextSibling } lineN += lineView.size } while (cur) { cur = rm(cur) } } function updateGutterSpace(cm) { var width = cm.display.gutters.offsetWidth cm.display.sizer.style.marginLeft = width + "px" } function setDocumentHeight(cm, measure) { cm.display.sizer.style.minHeight = measure.docHeight + "px" cm.display.heightForcer.style.top = measure.docHeight + "px" cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + "px" } // Rebuild the gutter elements, ensure the margin to the left of the // code matches their width. function updateGutters(cm) { var gutters = cm.display.gutters, specs = cm.options.gutters removeChildren(gutters) var i = 0 for (; i < specs.length; ++i) { var gutterClass = specs[i] var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)) if (gutterClass == "CodeMirror-linenumbers") { cm.display.lineGutter = gElt gElt.style.width = (cm.display.lineNumWidth \|\| 1) + "px" } } gutters.style.display = i ? "" : "none" updateGutterSpace(cm) } // Make sure the gutters options contains the element // "CodeMirror-linenumbers" when the lineNumbers option is true. function setGuttersForLineNumbers(options) { var found = indexOf(options.gutters, "CodeMirror-linenumbers") if (found == -1 && options.lineNumbers) { options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]) } else if (found > -1 && !options.lineNumbers) { options.gutters = options.gutters.slice(0) options.gutters.splice(found, 1) } } // Selection objects are immutable. A new one is created every time // the selection changes. A selection is one or more non-overlapping // (and non-touching) ranges, sorted, and an integer that indicates // which one is the primary selection (the one that's scrolled into // view, that getCursor returns, etc). var Selection = function(ranges, primIndex) { this.ranges = ranges this.primIndex = primIndex }; Selection.prototype.primary = function () { return this.ranges[this.primIndex] }; Selection.prototype.equals = function (other) { var this$1 = this; if (other == this) { return true } if (other.primIndex != this.primIndex \|\| other.ranges.length != this.ranges.length) { return false } for (var i = 0; i < this.ranges.length; i++) { var here = this$1.ranges[i], there = other.ranges[i] if (!equalCursorPos(here.anchor, there.anchor) \|\| !equalCursorPos(here.head, there.head)) { return false } } return true }; Selection.prototype.deepCopy = function () { var this$1 = this; var out = [] for (var i = 0; i < this.ranges.length; i++) { out[i] = new Range(copyPos(this$1.ranges[i].anchor), copyPos(this$1.ranges[i].head)) } return new Selection(out, this.primIndex) }; Selection.prototype.somethingSelected = function () { var this$1 = this; for (var i = 0; i < this.ranges.length; i++) { if (!this$1.ranges[i].empty()) { return true } } return false }; Selection.prototype.contains = function (pos, end) { var this$1 = this; if (!end) { end = pos } for (var i = 0; i < this.ranges.length; i++) { var range = this$1.ranges[i] if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0) { return i } } return -1 }; var Range = function(anchor, head) { this.anchor = anchor; this.head = head }; Range.prototype.from = function () { return minPos(this.anchor, this.head) }; Range.prototype.to = function () { return maxPos(this.anchor, this.head) }; Range.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch }; // Take an unsorted, potentially overlapping set of ranges, and // build a selection out of it. 'Consumes' ranges array (modifying // it). function normalizeSelection(ranges, primIndex) { var prim = ranges[primIndex] ranges.sort(function (a, b) { return cmp(a.from(), b.from()); }) primIndex = indexOf(ranges, prim) for (var i = 1; i < ranges.length; i++) { var cur = ranges[i], prev = ranges[i - 1] if (cmp(prev.to(), cur.from()) >= 0) { var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to()) var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head if (i <= primIndex) { --primIndex } ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to)) } } return new Selection(ranges, primIndex) } function simpleSelection(anchor, head) { return new Selection([new Range(anchor, head \|\| anchor)], 0) } // Compute the position of the end of a change (its 'to' property // refers to the pre-change end). function changeEnd(change) { if (!change.text) { return change.to } return Pos(change.from.line + change.text.length - 1, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)) } // Adjust a position to refer to the post-change position of the // same text, or the end of the change if the change covers it. function adjustForChange(pos, change) { if (cmp(pos, change.from) < 0) { return pos } if (cmp(pos, change.to) <= 0) { return changeEnd(change) } var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch } return Pos(line, ch) } function computeSelAfterChange(doc, change) { var out = [] for (var i = 0; i < doc.sel.ranges.length; i++) { var range = doc.sel.ranges[i] out.push(new Range(adjustForChange(range.anchor, change), adjustForChange(range.head, change))) } return normalizeSelection(out, doc.sel.primIndex) } function offsetPos(pos, old, nw) { if (pos.line == old.line) { return Pos(nw.line, pos.ch - old.ch + nw.ch) } else { return Pos(nw.line + (pos.line - old.line), pos.ch) } } // Used by replaceSelections to allow moving the selection to the // start or around the replaced test. Hint may be "start" or "around". function computeReplacedSel(doc, changes, hint) { var out = [] var oldPrev = Pos(doc.first, 0), newPrev = oldPrev for (var i = 0; i < changes.length; i++) { var change = changes[i] var from = offsetPos(change.from, oldPrev, newPrev) var to = offsetPos(changeEnd(change), oldPrev, newPrev) oldPrev = change.to newPrev = to if (hint == "around") { var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0 out[i] = new Range(inv ? to : from, inv ? from : to) } else { out[i] = new Range(from, from) } } return new Selection(out, doc.sel.primIndex) } // Used to get the editor into a consistent state again when options change. function loadMode(cm) { cm.doc.mode = getMode(cm.options, cm.doc.modeOption) resetModeState(cm) } function resetModeState(cm) { cm.doc.iter(function (line) { if (line.stateAfter) { line.stateAfter = null } if (line.styles) { line.styles = null } }) cm.doc.frontier = cm.doc.first startWorker(cm, 100) cm.state.modeGen++ if (cm.curOp) { regChange(cm) } } // DOCUMENT DATA STRUCTURE // By default, updates that start and end at the beginning of a line // are treated specially, in order to make the association of line // widgets and marker elements with the text behave more intuitive. function isWholeLineUpdate(doc, change) { return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" && (!doc.cm \|\| doc.cm.options.wholeLineUpdateBefore) } // Perform a change on the document data structure. function updateDoc(doc, change, markedSpans, estimateHeight) { function spansFor(n) {return markedSpans ? markedSpans[n] : null} function update(line, text, spans) { updateLine(line, text, spans, estimateHeight) signalLater(line, "change", line, change) } function linesFor(start, end) { var result = [] for (var i = start; i < end; ++i) { result.push(new Line(text[i], spansFor(i), estimateHeight)) } return result } var from = change.from, to = change.to, text = change.text var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line) var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line // Adjust the line structure if (change.full) { doc.insert(0, linesFor(0, text.length)) doc.remove(text.length, doc.size - text.length) } else if (isWholeLineUpdate(doc, change)) { // This is a whole-line replace. Treated specially to make // sure line objects move the way they are supposed to. var added = linesFor(0, text.length - 1) update(lastLine, lastLine.text, lastSpans) if (nlines) { doc.remove(from.line, nlines) } if (added.length) { doc.insert(from.line, added) } } else if (firstLine == lastLine) { if (text.length == 1) { update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans) } else { var added$1 = linesFor(1, text.length - 1) added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)) update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)) doc.insert(from.line + 1, added$1) } } else if (text.length == 1) { update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)) doc.remove(from.line + 1, nlines) } else { update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)) update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans) var added$2 = linesFor(1, text.length - 1) if (nlines > 1) { doc.remove(from.line + 1, nlines - 1) } doc.insert(from.line + 1, added$2) } signalLater(doc, "change", doc, change) } // Call f for all linked documents. function linkedDocs(doc, f, sharedHistOnly) { function propagate(doc, skip, sharedHist) { if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) { var rel = doc.linked[i] if (rel.doc == skip) { continue } var shared = sharedHist && rel.sharedHist if (sharedHistOnly && !shared) { continue } f(rel.doc, shared) propagate(rel.doc, doc, shared) } } } propagate(doc, null, true) } // Attach a document to an editor. function attachDoc(cm, doc) { if (doc.cm) { throw new Error("This document is already in use.") } cm.doc = doc doc.cm = cm estimateLineHeights(cm) loadMode(cm) setDirectionClass(cm) if (!cm.options.lineWrapping) { findMaxLine(cm) } cm.options.mode = doc.modeOption regChange(cm) } function setDirectionClass(cm) { ;(cm.doc.direction == "rtl" ? addClass : rmClass)(cm.display.lineDiv, "CodeMirror-rtl") } function directionChanged(cm) { runInOp(cm, function () { setDirectionClass(cm) regChange(cm) }) } function History(startGen) { // Arrays of change events and selections. Doing something adds an // event to done and clears undo. Undoing moves events from done // to undone, redoing moves them in the other direction. this.done = []; this.undone = [] this.undoDepth = Infinity // Used to track when changes can be merged into a single undo // event this.lastModTime = this.lastSelTime = 0 this.lastOp = this.lastSelOp = null this.lastOrigin = this.lastSelOrigin = null // Used by the isClean() method this.generation = this.maxGeneration = startGen \|\| 1 } // Create a history change event from an updateDoc-style change // object. function historyChangeFromChange(doc, change) { var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)} attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1) linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true) return histChange } // Pop all selection events off the end of a history array. Stop at // a change event. function clearSelectionEvents(array) { while (array.length) { var last = lst(array) if (last.ranges) { array.pop() } else { break } } } // Find the top change event in the history. Pop off selection // events that are in the way. function lastChangeEvent(hist, force) { if (force) { clearSelectionEvents(hist.done) return lst(hist.done) } else if (hist.done.length && !lst(hist.done).ranges) { return lst(hist.done) } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) { hist.done.pop() return lst(hist.done) } } // Register a change in the history. Merges changes that are within // a single operation, or are close together with an origin that // allows merging (starting with "+") into a single event. function addChangeToHistory(doc, change, selAfter, opId) { var hist = doc.history hist.undone.length = 0 var time = +new Date, cur var last if ((hist.lastOp == opId \|\| hist.lastOrigin == change.origin && change.origin && ((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) \|\| change.origin.charAt(0) == "")) && (cur = lastChangeEvent(hist, hist.lastOp == opId))) { // Merge this change into the last event last = lst(cur.changes) if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) { // Optimized case for simple insertion -- don't want to add // new changesets for every character typed last.to = changeEnd(change) } else { // Add new sub-event cur.changes.push(historyChangeFromChange(doc, change)) } } else { // Can not be merged, start a new event. var before = lst(hist.done) if (!before \|\| !before.ranges) { pushSelectionToHistory(doc.sel, hist.done) } cur = {changes: [historyChangeFromChange(doc, change)], generation: hist.generation} hist.done.push(cur) while (hist.done.length > hist.undoDepth) { hist.done.shift() if (!hist.done[0].ranges) { hist.done.shift() } } } hist.done.push(selAfter) hist.generation = ++hist.maxGeneration hist.lastModTime = hist.lastSelTime = time hist.lastOp = hist.lastSelOp = opId hist.lastOrigin = hist.lastSelOrigin = change.origin if (!last) { signal(doc, "historyAdded") } } function selectionEventCanBeMerged(doc, origin, prev, sel) { var ch = origin.charAt(0) return ch == "" \|\| ch == "+" && prev.ranges.length == sel.ranges.length && prev.somethingSelected() == sel.somethingSelected() && new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500) } // Called whenever the selection changes, sets the new selection as // the pending selection in the history, and pushes the old pending // selection into the 'done' array when it was significantly // different (in number of selected ranges, emptiness, or time). function addSelectionToHistory(doc, sel, opId, options) { var hist = doc.history, origin = options && options.origin // A new event is started when the previous origin does not match // the current, or the origins don't allow matching. Origins // starting with * are always merged, those starting with + are // merged when similar and close together in time. if (opId == hist.lastSelOp \|\| (origin && hist.lastSelOrigin == origin && (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin \|\| selectionEventCanBeMerged(doc, origin, lst(hist.done), sel)))) { hist.done[hist.done.length - 1] = sel } else { pushSelectionToHistory(sel, hist.done) } hist.lastSelTime = +new Date hist.lastSelOrigin = origin hist.lastSelOp = opId if (options && options.clearRedo !== false) { clearSelectionEvents(hist.undone) } } function pushSelectionToHistory(sel, dest) { var top = lst(dest) if (!(top && top.ranges && top.equals(sel))) { dest.push(sel) } } // Used to store marked span information in the history. function attachLocalSpans(doc, change, from, to) { var existing = change["spans_" + doc.id], n = 0 doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) { if (line.markedSpans) { (existing \|\| (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans } ++n }) } // When un/re-doing restores text containing marked spans, those // that have been explicitly cleared should not be restored. function removeClearedSpans(spans) { if (!spans) { return null } var out for (var i = 0; i < spans.length; ++i) { if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i) } } else if (out) { out.push(spans[i]) } } return !out ? spans : out.length ? out : null } // Retrieve and filter the old marked spans stored in a change event. function getOldSpans(doc, change) { var found = change["spans_" + doc.id] if (!found) { return null } var nw = [] for (var i = 0; i < change.text.length; ++i) { nw.push(removeClearedSpans(found[i])) } return nw } // Used for un/re-doing changes from the history. Combines the // result of computing the existing spans with the set of spans that // existed in the history (so that deleting around a span and then // undoing brings back the span). function mergeOldSpans(doc, change) { var old = getOldSpans(doc, change) var stretched = stretchSpansOverChange(doc, change) if (!old) { return stretched } if (!stretched) { return old } for (var i = 0; i < old.length; ++i) { var oldCur = old[i], stretchCur = stretched[i] if (oldCur && stretchCur) { spans: for (var j = 0; j < stretchCur.length; ++j) { var span = stretchCur[j] for (var k = 0; k < oldCur.length; ++k) { if (oldCur[k].marker == span.marker) { continue spans } } oldCur.push(span) } } else if (stretchCur) { old[i] = stretchCur } } return old } // Used both to provide a JSON-safe object in .getHistory, and, when // detaching a document, to split the history in two function copyHistoryArray(events, newGroup, instantiateSel) { var copy = [] for (var i = 0; i < events.length; ++i) { var event = events[i] if (event.ranges) { copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event) continue } var changes = event.changes, newChanges = [] copy.push({changes: newChanges}) for (var j = 0; j < changes.length; ++j) { var change = changes[j], m = (void 0) newChanges.push({from: change.from, to: change.to, text: change.text}) if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\d+)$/)) { if (indexOf(newGroup, Number(m[1])) > -1) { lst(newChanges)[prop] = change[prop] delete change[prop] } } } } } } return copy } // The 'scroll' parameter given to many of these indicated whether // the new cursor position should be scrolled into view after // modifying the selection. // If shift is held or the extend flag is set, extends a range to // include a given position (and optionally a second position). // Otherwise, simply returns the range between the given positions. // Used for cursor motion and such. function extendRange(doc, range, head, other) { if (doc.cm && doc.cm.display.shift \|\| doc.extend) { var anchor = range.anchor if (other) { var posBefore = cmp(head, anchor) < 0 if (posBefore != (cmp(other, anchor) < 0)) { anchor = head head = other } else if (posBefore != (cmp(head, other) < 0)) { head = other } } return new Range(anchor, head) } else { return new Range(other \|\| head, head) } } // Extend the primary selection range, discard the rest. function extendSelection(doc, head, other, options) { setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options) } // Extend all selections (pos is an array of selections with length // equal the number of selections) function extendSelections(doc, heads, options) { var out = [] for (var i = 0; i < doc.sel.ranges.length; i++) { out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null) } var newSel = normalizeSelection(out, doc.sel.primIndex) setSelection(doc, newSel, options) } // Updates a single range in the selection. function replaceOneSelection(doc, i, range, options) { var ranges = doc.sel.ranges.slice(0) ranges[i] = range setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options) } // Reset the selection to a single range. function setSimpleSelection(doc, anchor, head, options) { setSelection(doc, simpleSelection(anchor, head), options) } // Give beforeSelectionChange handlers a change to influence a // selection update. function filterSelectionChange(doc, sel, options) { var obj = { ranges: sel.ranges, update: function(ranges) { var this$1 = this; this.ranges = [] for (var i = 0; i < ranges.length; i++) { this$1.ranges[i] = new Range(clipPos(doc, ranges[i].anchor), clipPos(doc, ranges[i].head)) } }, origin: options && options.origin } signal(doc, "beforeSelectionChange", doc, obj) if (doc.cm) { signal(doc.cm, "beforeSelectionChange", doc.cm, obj) } if (obj.ranges != sel.ranges) { return normalizeSelection(obj.ranges, obj.ranges.length - 1) } else { return sel } } function setSelectionReplaceHistory(doc, sel, options) { var done = doc.history.done, last = lst(done) if (last && last.ranges) { done[done.length - 1] = sel setSelectionNoUndo(doc, sel, options) } else { setSelection(doc, sel, options) } } // Set a new selection. function setSelection(doc, sel, options) { setSelectionNoUndo(doc, sel, options) addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options) } function setSelectionNoUndo(doc, sel, options) { if (hasHandler(doc, "beforeSelectionChange") \|\| doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) { sel = filterSelectionChange(doc, sel, options) } var bias = options && options.bias \|\| (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1) setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true)) if (!(options && options.scroll === false) && doc.cm) { ensureCursorVisible(doc.cm) } } function setSelectionInner(doc, sel) { if (sel.equals(doc.sel)) { return } doc.sel = sel if (doc.cm) { doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true signalCursorActivity(doc.cm) } signalLater(doc, "cursorActivity", doc) } // Verify that the selection does not partially select any atomic // marked ranges. function reCheckSelection(doc) { setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll) } // Return a selection that does not partially select any atomic // ranges. function skipAtomicInSelection(doc, sel, bias, mayClear) { var out for (var i = 0; i < sel.ranges.length; i++) { var range = sel.ranges[i] var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i] var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear) var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear) if (out \|\| newAnchor != range.anchor \|\| newHead != range.head) { if (!out) { out = sel.ranges.slice(0, i) } out[i] = new Range(newAnchor, newHead) } } return out ? normalizeSelection(out, sel.primIndex) : sel } function skipAtomicInner(doc, pos, oldPos, dir, mayClear) { var line = getLine(doc, pos.line) if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) { var sp = line.markedSpans[i], m = sp.marker if ((sp.from == null \|\| (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) && (sp.to == null \|\| (m.inclusiveRight ? sp.to >= pos.ch : sp.to > pos.ch))) { if (mayClear) { signal(m, "beforeCursorEnter") if (m.explicitlyCleared) { if (!line.markedSpans) { break } else {--i; continue} } } if (!m.atomic) { continue } if (oldPos) { var near = m.find(dir < 0 ? 1 : -1), diff = (void 0) if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft) { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null) } if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0)) { return skipAtomicInner(doc, near, pos, dir, mayClear) } } var far = m.find(dir < 0 ? -1 : 1) if (dir < 0 ? m.inclusiveLeft : m.inclusiveRight) { far = movePos(doc, far, dir, far.line == pos.line ? line : null) } return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null } } } return pos } // Ensure a given position is not inside an atomic range. function skipAtomic(doc, pos, oldPos, bias, mayClear) { var dir = bias \|\| 1 var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) \|\| (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) \|\| skipAtomicInner(doc, pos, oldPos, -dir, mayClear) \|\| (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true)) if (!found) { doc.cantEdit = true return Pos(doc.first, 0) } return found } function movePos(doc, pos, dir, line) { if (dir < 0 && pos.ch == 0) { if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) } else { return null } } else if (dir > 0 && pos.ch == (line \|\| getLine(doc, pos.line)).text.length) { if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) } else { return null } } else { return new Pos(pos.line, pos.ch + dir) } } function selectAll(cm) { cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll) } // UPDATING // Allow "beforeChange" event handlers to influence a change function filterChange(doc, change, update) { var obj = { canceled: false, from: change.from, to: change.to, text: change.text, origin: change.origin, cancel: function () { return obj.canceled = true; } } if (update) { obj.update = function (from, to, text, origin) { if (from) { obj.from = clipPos(doc, from) } if (to) { obj.to = clipPos(doc, to) } if (text) { obj.text = text } if (origin !== undefined) { obj.origin = origin } } } signal(doc, "beforeChange", doc, obj) if (doc.cm) { signal(doc.cm, "beforeChange", doc.cm, obj) } if (obj.canceled) { return null } return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin} } // Apply a change to a document, and add it to the document's // history, and propagating it to all linked documents. function makeChange(doc, change, ignoreReadOnly) { if (doc.cm) { if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) } if (doc.cm.state.suppressEdits) { return } } if (hasHandler(doc, "beforeChange") \|\| doc.cm && hasHandler(doc.cm, "beforeChange")) { change = filterChange(doc, change, true) if (!change) { return } } // Possibly split or suppress the update based on the presence // of read-only spans in its range. var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to) if (split) { for (var i = split.length - 1; i >= 0; --i) { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text}) } } else { makeChangeInner(doc, change) } } function makeChangeInner(doc, change) { if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) { return } var selAfter = computeSelAfterChange(doc, change) addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN) makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)) var rebased = [] linkedDocs(doc, function (doc, sharedHist) { if (!sharedHist && indexOf(rebased, doc.history) == -1) { rebaseHist(doc.history, change) rebased.push(doc.history) } makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)) }) } // Revert a change stored in a document's history. function makeChangeFromHistory(doc, type, allowSelectionOnly) { if (doc.cm && doc.cm.state.suppressEdits && !allowSelectionOnly) { return } var hist = doc.history, event, selAfter = doc.sel var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done // Verify that there is a useable event (so that ctrl-z won't // needlessly clear selection events) var i = 0 for (; i < source.length; i++) { event = source[i] if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges) { break } } if (i == source.length) { return } hist.lastOrigin = hist.lastSelOrigin = null for (;;) { event = source.pop() if (event.ranges) { pushSelectionToHistory(event, dest) if (allowSelectionOnly && !event.equals(doc.sel)) { setSelection(doc, event, {clearRedo: false}) return } selAfter = event } else { break } } // Build up a reverse change object to add to the opposite history // stack (redo when undoing, and vice versa). var antiChanges = [] pushSelectionToHistory(selAfter, dest) dest.push({changes: antiChanges, generation: hist.generation}) hist.generation = event.generation \|\| ++hist.maxGeneration var filter = hasHandler(doc, "beforeChange") \|\| doc.cm && hasHandler(doc.cm, "beforeChange") var loop = function ( i ) { var change = event.changes[i] change.origin = type if (filter && !filterChange(doc, change, false)) { source.length = 0 return {} } antiChanges.push(historyChangeFromChange(doc, change)) var after = i ? computeSelAfterChange(doc, change) : lst(source) makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)) if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}) } var rebased = [] // Propagate to the linked documents linkedDocs(doc, function (doc, sharedHist) { if (!sharedHist && indexOf(rebased, doc.history) == -1) { rebaseHist(doc.history, change) rebased.push(doc.history) } makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)) }) }; for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) { var returned = loop( i$1 ); if ( returned ) return returned.v; } } // Sub-views need their line numbers shifted when text is added // above or below them in the parent document. function shiftDoc(doc, distance) { if (distance == 0) { return } doc.first += distance doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range( Pos(range.anchor.line + distance, range.anchor.ch), Pos(range.head.line + distance, range.head.ch) ); }), doc.sel.primIndex) if (doc.cm) { regChange(doc.cm, doc.first, doc.first - distance, distance) for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++) { regLineChange(doc.cm, l, "gutter") } } } // More lower-level change function, handling only a single document // (not linked ones). function makeChangeSingleDoc(doc, change, selAfter, spans) { if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) } if (change.to.line < doc.first) { shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)) return } if (change.from.line > doc.lastLine()) { return } // Clip the change to the size of this doc if (change.from.line < doc.first) { var shift = change.text.length - 1 - (doc.first - change.from.line) shiftDoc(doc, shift) change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), text: [lst(change.text)], origin: change.origin} } var last = doc.lastLine() if (change.to.line > last) { change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), text: [change.text[0]], origin: change.origin} } change.removed = getBetween(doc, change.from, change.to) if (!selAfter) { selAfter = computeSelAfterChange(doc, change) } if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans) } else { updateDoc(doc, change, spans) } setSelectionNoUndo(doc, selAfter, sel_dontScroll) } // Handle the interaction of a change to a document with the editor // that this document is part of. function makeChangeSingleDocInEditor(cm, change, spans) { var doc = cm.doc, display = cm.display, from = change.from, to = change.to var recomputeMaxLength = false, checkWidthStart = from.line if (!cm.options.lineWrapping) { checkWidthStart = lineNo(visualLine(getLine(doc, from.line))) doc.iter(checkWidthStart, to.line + 1, function (line) { if (line == display.maxLine) { recomputeMaxLength = true return true } }) } if (doc.sel.contains(change.from, change.to) > -1) { signalCursorActivity(cm) } updateDoc(doc, change, spans, estimateHeight(cm)) if (!cm.options.lineWrapping) { doc.iter(checkWidthStart, from.line + change.text.length, function (line) { var len = lineLength(line) if (len > display.maxLineLength) { display.maxLine = line display.maxLineLength = len display.maxLineChanged = true recomputeMaxLength = false } }) if (recomputeMaxLength) { cm.curOp.updateMaxLine = true } } // Adjust frontier, schedule worker doc.frontier = Math.min(doc.frontier, from.line) startWorker(cm, 400) var lendiff = change.text.length - (to.line - from.line) - 1 // Remember that these lines changed, for updating the display if (change.full) { regChange(cm) } else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change)) { regLineChange(cm, from.line, "text") } else { regChange(cm, from.line, to.line + 1, lendiff) } var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change") if (changeHandler \|\| changesHandler) { var obj = { from: from, to: to, text: change.text, removed: change.removed, origin: change.origin } if (changeHandler) { signalLater(cm, "change", cm, obj) } if (changesHandler) { (cm.curOp.changeObjs \|\| (cm.curOp.changeObjs = [])).push(obj) } } cm.display.selForContextMenu = null } function replaceRange(doc, code, from, to, origin) { if (!to) { to = from } if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp } if (typeof code == "string") { code = doc.splitLines(code) } makeChange(doc, {from: from, to: to, text: code, origin: origin}) } // Rebasing/resetting history to deal with externally-sourced changes function rebaseHistSelSingle(pos, from, to, diff) { if (to < pos.line) { pos.line += diff } else if (from < pos.line) { pos.line = from pos.ch = 0 } } // Tries to rebase an array of history events given a change in the // document. If the change touches the same lines as the event, the // event, and everything 'behind' it, is discarded. If the change is // before the event, the event's positions are updated. Uses a // copy-on-write scheme for the positions, to avoid having to // reallocate them all on every rebase, but also avoid problems with // shared position objects being unsafely updated. function rebaseHistArray(array, from, to, diff) { for (var i = 0; i < array.length; ++i) { var sub = array[i], ok = true if (sub.ranges) { if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true } for (var j = 0; j < sub.ranges.length; j++) { rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff) rebaseHistSelSingle(sub.ranges[j].head, from, to, diff) } continue } for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) { var cur = sub.changes[j$1] if (to < cur.from.line) { cur.from = Pos(cur.from.line + diff, cur.from.ch) cur.to = Pos(cur.to.line + diff, cur.to.ch) } else if (from <= cur.to.line) { ok = false break } } if (!ok) { array.splice(0, i + 1) i = 0 } } } function rebaseHist(hist, change) { var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1 rebaseHistArray(hist.done, from, to, diff) rebaseHistArray(hist.undone, from, to, diff) } // Utility for applying a change to a line by handle or number, // returning the number and optionally registering the line as // changed. function changeLine(doc, handle, changeType, op) { var no = handle, line = handle if (typeof handle == "number") { line = getLine(doc, clipLine(doc, handle)) } else { no = lineNo(handle) } if (no == null) { return null } if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType) } return line } // The document is represented as a BTree consisting of leaves, with // chunk of lines in them, and branches, with up to ten leaves or // other branch nodes below them. The top node is always a branch // node, and is the document object itself (meaning it has // additional methods and properties). // // All nodes have parent links. The tree is used both to go from // line numbers to line objects, and to go from objects to numbers. // It also indexes by height, and is used to convert between height // and line object, and to find the total height of the document. // // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html var LeafChunk = function(lines) { var this$1 = this; this.lines = lines this.parent = null var height = 0 for (var i = 0; i < lines.length; ++i) { lines[i].parent = this$1 height += lines[i].height } this.height = height }; LeafChunk.prototype.chunkSize = function () { return this.lines.length }; // Remove the n lines at offset 'at'. LeafChunk.prototype.removeInner = function (at, n) { var this$1 = this; for (var i = at, e = at + n; i < e; ++i) { var line = this$1.lines[i] this$1.height -= line.height cleanUpLine(line) signalLater(line, "delete") } this.lines.splice(at, n) }; // Helper used to collapse a small branch into a single leaf. LeafChunk.prototype.collapse = function (lines) { lines.push.apply(lines, this.lines) }; // Insert the given array of lines at offset 'at', count them as // having the given height. LeafChunk.prototype.insertInner = function (at, lines, height) { var this$1 = this; this.height += height this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)) for (var i = 0; i < lines.length; ++i) { lines[i].parent = this$1 } }; // Used to iterate over a part of the tree. LeafChunk.prototype.iterN = function (at, n, op) { var this$1 = this; for (var e = at + n; at < e; ++at) { if (op(this$1.lines[at])) { return true } } }; var BranchChunk = function(children) { var this$1 = this; this.children = children var size = 0, height = 0 for (var i = 0; i < children.length; ++i) { var ch = children[i] size += ch.chunkSize(); height += ch.height ch.parent = this$1 } this.size = size this.height = height this.parent = null }; BranchChunk.prototype.chunkSize = function () { return this.size }; BranchChunk.prototype.removeInner = function (at, n) { var this$1 = this; this.size -= n for (var i = 0; i < this.children.length; ++i) { var child = this$1.children[i], sz = child.chunkSize() if (at < sz) { var rm = Math.min(n, sz - at), oldHeight = child.height child.removeInner(at, rm) this$1.height -= oldHeight - child.height if (sz == rm) { this$1.children.splice(i--, 1); child.parent = null } if ((n -= rm) == 0) { break } at = 0 } else { at -= sz } } // If the result is smaller than 25 lines, ensure that it is a // single leaf node. if (this.size - n < 25 && (this.children.length > 1 \|\| !(this.children[0] instanceof LeafChunk))) { var lines = [] this.collapse(lines) this.children = [new LeafChunk(lines)] this.children[0].parent = this } }; BranchChunk.prototype.collapse = function (lines) { var this$1 = this; for (var i = 0; i < this.children.length; ++i) { this$1.children[i].collapse(lines) } }; BranchChunk.prototype.insertInner = function (at, lines, height) { var this$1 = this; this.size += lines.length this.height += height for (var i = 0; i < this.children.length; ++i) { var child = this$1.children[i], sz = child.chunkSize() if (at <= sz) { child.insertInner(at, lines, height) if (child.lines && child.lines.length > 50) { // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced. // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest. var remaining = child.lines.length % 25 + 25 for (var pos = remaining; pos < child.lines.length;) { var leaf = new LeafChunk(child.lines.slice(pos, pos += 25)) child.height -= leaf.height this$1.children.splice(++i, 0, leaf) leaf.parent = this$1 } child.lines = child.lines.slice(0, remaining) this$1.maybeSpill() } break } at -= sz } }; // When a node has grown, check whether it should be split. BranchChunk.prototype.maybeSpill = function () { if (this.children.length <= 10) { return } var me = this do { var spilled = me.children.splice(me.children.length - 5, 5) var sibling = new BranchChunk(spilled) if (!me.parent) { // Become the parent node var copy = new BranchChunk(me.children) copy.parent = me me.children = [copy, sibling] me = copy } else { me.size -= sibling.size me.height -= sibling.height var myIndex = indexOf(me.parent.children, me) me.parent.children.splice(myIndex + 1, 0, sibling) } sibling.parent = me.parent } while (me.children.length > 10) me.parent.maybeSpill() }; BranchChunk.prototype.iterN = function (at, n, op) { var this$1 = this; for (var i = 0; i < this.children.length; ++i) { var child = this$1.children[i], sz = child.chunkSize() if (at < sz) { var used = Math.min(n, sz - at) if (child.iterN(at, used, op)) { return true } if ((n -= used) == 0) { break } at = 0 } else { at -= sz } } }; // Line widgets are block elements displayed above or below a line. var LineWidget = function(doc, node, options) { var this$1 = this; if (options) { for (var opt in options) { if (options.hasOwnProperty(opt)) { this$1[opt] = options[opt] } } } this.doc = doc this.node = node }; LineWidget.prototype.clear = function () { var this$1 = this; var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line) if (no == null \|\| !ws) { return } for (var i = 0; i < ws.length; ++i) { if (ws[i] == this$1) { ws.splice(i--, 1) } } if (!ws.length) { line.widgets = null } var height = widgetHeight(this) updateLineHeight(line, Math.max(0, line.height - height)) if (cm) { runInOp(cm, function () { adjustScrollWhenAboveVisible(cm, line, -height) regLineChange(cm, no, "widget") }) signalLater(cm, "lineWidgetCleared", cm, this, no) } }; LineWidget.prototype.changed = function () { var this$1 = this; var oldH = this.height, cm = this.doc.cm, line = this.line this.height = null var diff = widgetHeight(this) - oldH if (!diff) { return } updateLineHeight(line, line.height + diff) if (cm) { runInOp(cm, function () { cm.curOp.forceUpdate = true adjustScrollWhenAboveVisible(cm, line, diff) signalLater(cm, "lineWidgetChanged", cm, this$1, lineNo(line)) }) } }; eventMixin(LineWidget) function adjustScrollWhenAboveVisible(cm, line, diff) { if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) \|\| cm.doc.scrollTop)) { addToScrollPos(cm, null, diff) } } function addLineWidget(doc, handle, node, options) { var widget = new LineWidget(doc, node, options) var cm = doc.cm if (cm && widget.noHScroll) { cm.display.alignWidgets = true } changeLine(doc, handle, "widget", function (line) { var widgets = line.widgets \|\| (line.widgets = []) if (widget.insertAt == null) { widgets.push(widget) } else { widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget) } widget.line = line if (cm && !lineIsHidden(doc, line)) { var aboveVisible = heightAtLine(line) < doc.scrollTop updateLineHeight(line, line.height + widgetHeight(widget)) if (aboveVisible) { addToScrollPos(cm, null, widget.height) } cm.curOp.forceUpdate = true } return true }) signalLater(cm, "lineWidgetAdded", cm, widget, typeof handle == "number" ? handle : lineNo(handle)) return widget } // TEXTMARKERS // Created with markText and setBookmark methods. A TextMarker is a // handle that can be used to clear or find a marked position in the // document. Line objects hold arrays (markedSpans) containing // {from, to, marker} object pointing to such marker objects, and // indicating that such a marker is present on that line. Multiple // lines may point to the same marker when it spans across lines. // The spans will have null for their from/to properties when the // marker continues beyond the start/end of the line. Markers have // links back to the lines they currently touch. // Collapsed markers have unique ids, in order to be able to order // them, which is needed for uniquely determining an outer marker // when they overlap (they may nest, but not partially overlap). var nextMarkerId = 0 var TextMarker = function(doc, type) { this.lines = [] this.type = type this.doc = doc this.id = ++nextMarkerId }; // Clear the marker. TextMarker.prototype.clear = function () { var this$1 = this; if (this.explicitlyCleared) { return } var cm = this.doc.cm, withOp = cm && !cm.curOp if (withOp) { startOperation(cm) } if (hasHandler(this, "clear")) { var found = this.find() if (found) { signalLater(this, "clear", found.from, found.to) } } var min = null, max = null for (var i = 0; i < this.lines.length; ++i) { var line = this$1.lines[i] var span = getMarkedSpanFor(line.markedSpans, this$1) if (cm && !this$1.collapsed) { regLineChange(cm, lineNo(line), "text") } else if (cm) { if (span.to != null) { max = lineNo(line) } if (span.from != null) { min = lineNo(line) } } line.markedSpans = removeMarkedSpan(line.markedSpans, span) if (span.from == null && this$1.collapsed && !lineIsHidden(this$1.doc, line) && cm) { updateLineHeight(line, textHeight(cm.display)) } } if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) { var visual = visualLine(this$1.lines[i$1]), len = lineLength(visual) if (len > cm.display.maxLineLength) { cm.display.maxLine = visual cm.display.maxLineLength = len cm.display.maxLineChanged = true } } } if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1) } this.lines.length = 0 this.explicitlyCleared = true if (this.atomic && this.doc.cantEdit) { this.doc.cantEdit = false if (cm) { reCheckSelection(cm.doc) } } if (cm) { signalLater(cm, "markerCleared", cm, this, min, max) } if (withOp) { endOperation(cm) } if (this.parent) { this.parent.clear() } }; // Find the position of the marker in the document. Returns a {from, // to} object by default. Side can be passed to get a specific side // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the // Pos objects returned contain a line object, rather than a line // number (used to prevent looking up the same line twice). TextMarker.prototype.find = function (side, lineObj) { var this$1 = this; if (side == null && this.type == "bookmark") { side = 1 } var from, to for (var i = 0; i < this.lines.length; ++i) { var line = this$1.lines[i] var span = getMarkedSpanFor(line.markedSpans, this$1) if (span.from != null) { from = Pos(lineObj ? line : lineNo(line), span.from) if (side == -1) { return from } } if (span.to != null) { to = Pos(lineObj ? line : lineNo(line), span.to) if (side == 1) { return to } } } return from && {from: from, to: to} }; // Signals that the marker's widget changed, and surrounding layout // should be recomputed. TextMarker.prototype.changed = function () { var this$1 = this; var pos = this.find(-1, true), widget = this, cm = this.doc.cm if (!pos \|\| !cm) { return } runInOp(cm, function () { var line = pos.line, lineN = lineNo(pos.line) var view = findViewForLine(cm, lineN) if (view) { clearLineMeasurementCacheFor(view) cm.curOp.selectionChanged = cm.curOp.forceUpdate = true } cm.curOp.updateMaxLine = true if (!lineIsHidden(widget.doc, line) && widget.height != null) { var oldHeight = widget.height widget.height = null var dHeight = widgetHeight(widget) - oldHeight if (dHeight) { updateLineHeight(line, line.height + dHeight) } } signalLater(cm, "markerChanged", cm, this$1) }) }; TextMarker.prototype.attachLine = function (line) { if (!this.lines.length && this.doc.cm) { var op = this.doc.cm.curOp if (!op.maybeHiddenMarkers \|\| indexOf(op.maybeHiddenMarkers, this) == -1) { (op.maybeUnhiddenMarkers \|\| (op.maybeUnhiddenMarkers = [])).push(this) } } this.lines.push(line) }; TextMarker.prototype.detachLine = function (line) { this.lines.splice(indexOf(this.lines, line), 1) if (!this.lines.length && this.doc.cm) { var op = this.doc.cm.curOp ;(op.maybeHiddenMarkers \|\| (op.maybeHiddenMarkers = [])).push(this) } }; eventMixin(TextMarker) // Create a marker, wire it up to the right lines, and function markText(doc, from, to, options, type) { // Shared markers (across linked documents) are handled separately // (markTextShared will call out to this again, once per // document). if (options && options.shared) { return markTextShared(doc, from, to, options, type) } // Ensure we are in an operation. if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) } var marker = new TextMarker(doc, type), diff = cmp(from, to) if (options) { copyObj(options, marker, false) } // Don't connect empty markers unless clearWhenEmpty is false if (diff > 0 \|\| diff == 0 && marker.clearWhenEmpty !== false) { return marker } if (marker.replacedWith) { // Showing up as a widget implies collapsed (widget replaces text) marker.collapsed = true marker.widgetNode = eltP("span", [marker.replacedWith], "CodeMirror-widget") if (!options.handleMouseEvents) { marker.widgetNode.setAttribute("cm-ignore-events", "true") } if (options.insertLeft) { marker.widgetNode.insertLeft = true } } if (marker.collapsed) { if (conflictingCollapsedRange(doc, from.line, from, to, marker) \|\| from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) { throw new Error("Inserting collapsed marker partially overlapping an existing one") } seeCollapsedSpans() } if (marker.addToHistory) { addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN) } var curLine = from.line, cm = doc.cm, updateMaxLine doc.iter(curLine, to.line + 1, function (line) { if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine) { updateMaxLine = true } if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0) } addMarkedSpan(line, new MarkedSpan(marker, curLine == from.line ? from.ch : null, curLine == to.line ? to.ch : null)) ++curLine }) // lineIsHidden depends on the presence of the spans, so needs a second pass if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) { if (lineIsHidden(doc, line)) { updateLineHeight(line, 0) } }) } if (marker.clearOnEnter) { on(marker, "beforeCursorEnter", function () { return marker.clear(); }) } if (marker.readOnly) { seeReadOnlySpans() if (doc.history.done.length \|\| doc.history.undone.length) { doc.clearHistory() } } if (marker.collapsed) { marker.id = ++nextMarkerId marker.atomic = true } if (cm) { // Sync editor state if (updateMaxLine) { cm.curOp.updateMaxLine = true } if (marker.collapsed) { regChange(cm, from.line, to.line + 1) } else if (marker.className \|\| marker.title \|\| marker.startStyle \|\| marker.endStyle \|\| marker.css) { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, "text") } } if (marker.atomic) { reCheckSelection(cm.doc) } signalLater(cm, "markerAdded", cm, marker) } return marker } // SHARED TEXTMARKERS // A shared marker spans multiple linked documents. It is // implemented as a meta-marker-object controlling multiple normal // markers. var SharedTextMarker = function(markers, primary) { var this$1 = this; this.markers = markers this.primary = primary for (var i = 0; i < markers.length; ++i) { markers[i].parent = this$1 } }; SharedTextMarker.prototype.clear = function () { var this$1 = this; if (this.explicitlyCleared) { return } this.explicitlyCleared = true for (var i = 0; i < this.markers.length; ++i) { this$1.markers[i].clear() } signalLater(this, "clear") }; SharedTextMarker.prototype.find = function (side, lineObj) { return this.primary.find(side, lineObj) }; eventMixin(SharedTextMarker) function markTextShared(doc, from, to, options, type) { options = copyObj(options) options.shared = false var markers = [markText(doc, from, to, options, type)], primary = markers[0] var widget = options.widgetNode linkedDocs(doc, function (doc) { if (widget) { options.widgetNode = widget.cloneNode(true) } markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)) for (var i = 0; i < doc.linked.length; ++i) { if (doc.linked[i].isParent) { return } } primary = lst(markers) }) return new SharedTextMarker(markers, primary) } function findSharedMarkers(doc) { return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; }) } function copySharedMarkers(doc, markers) { for (var i = 0; i < markers.length; i++) { var marker = markers[i], pos = marker.find() var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to) if (cmp(mFrom, mTo)) { var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type) marker.markers.push(subMark) subMark.parent = marker } } } function detachSharedMarkers(markers) { var loop = function ( i ) { var marker = markers[i], linked = [marker.primary.doc] linkedDocs(marker.primary.doc, function (d) { return linked.push(d); }) for (var j = 0; j < marker.markers.length; j++) { var subMarker = marker.markers[j] if (indexOf(linked, subMarker.doc) == -1) { subMarker.parent = null marker.markers.splice(j--, 1) } } }; for (var i = 0; i < markers.length; i++) loop( i ); } var nextDocId = 0 var Doc = function(text, mode, firstLine, lineSep, direction) { if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) } if (firstLine == null) { firstLine = 0 } BranchChunk.call(this, [new LeafChunk([new Line("", null)])]) this.first = firstLine this.scrollTop = this.scrollLeft = 0 this.cantEdit = false this.cleanGeneration = 1 this.frontier = firstLine var start = Pos(firstLine, 0) this.sel = simpleSelection(start) this.history = new History(null) this.id = ++nextDocId this.modeOption = mode this.lineSep = lineSep this.direction = (direction == "rtl") ? "rtl" : "ltr" this.extend = false if (typeof text == "string") { text = this.splitLines(text) } updateDoc(this, {from: start, to: start, text: text}) setSelection(this, simpleSelection(start), sel_dontScroll) } Doc.prototype = createObj(BranchChunk.prototype, { constructor: Doc, // Iterate over the document. Supports two forms -- with only one // argument, it calls that for each line in the document. With // three, it iterates over the range given by the first two (with // the second being non-inclusive). iter: function(from, to, op) { if (op) { this.iterN(from - this.first, to - from, op) } else { this.iterN(this.first, this.first + this.size, from) } }, // Non-public interface for adding and removing lines. insert: function(at, lines) { var height = 0 for (var i = 0; i < lines.length; ++i) { height += lines[i].height } this.insertInner(at - this.first, lines, height) }, remove: function(at, n) { this.removeInner(at - this.first, n) }, // From here, the methods are part of the public interface. Most // are also available from CodeMirror (editor) instances. getValue: function(lineSep) { var lines = getLines(this, this.first, this.first + this.size) if (lineSep === false) { return lines } return lines.join(lineSep \|\| this.lineSeparator()) }, setValue: docMethodOp(function(code) { var top = Pos(this.first, 0), last = this.first + this.size - 1 makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), text: this.splitLines(code), origin: "setValue", full: true}, true) setSelection(this, simpleSelection(top)) }), replaceRange: function(code, from, to, origin) { from = clipPos(this, from) to = to ? clipPos(this, to) : from replaceRange(this, code, from, to, origin) }, getRange: function(from, to, lineSep) { var lines = getBetween(this, clipPos(this, from), clipPos(this, to)) if (lineSep === false) { return lines } return lines.join(lineSep \|\| this.lineSeparator()) }, getLine: function(line) {var l = this.getLineHandle(line); return l && l.text}, getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }}, getLineNumber: function(line) {return lineNo(line)}, getLineHandleVisualStart: function(line) { if (typeof line == "number") { line = getLine(this, line) } return visualLine(line) }, lineCount: function() {return this.size}, firstLine: function() {return this.first}, lastLine: function() {return this.first + this.size - 1}, clipPos: function(pos) {return clipPos(this, pos)}, getCursor: function(start) { var range = this.sel.primary(), pos if (start == null \|\| start == "head") { pos = range.head } else if (start == "anchor") { pos = range.anchor } else if (start == "end" \|\| start == "to" \|\| start === false) { pos = range.to() } else { pos = range.from() } return pos }, listSelections: function() { return this.sel.ranges }, somethingSelected: function() {return this.sel.somethingSelected()}, setCursor: docMethodOp(function(line, ch, options) { setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch \|\| 0) : line), null, options) }), setSelection: docMethodOp(function(anchor, head, options) { setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head \|\| anchor), options) }), extendSelection: docMethodOp(function(head, other, options) { extendSelection(this, clipPos(this, head), other && clipPos(this, other), options) }), extendSelections: docMethodOp(function(heads, options) { extendSelections(this, clipPosArray(this, heads), options) }), extendSelectionsBy: docMethodOp(function(f, options) { var heads = map(this.sel.ranges, f) extendSelections(this, clipPosArray(this, heads), options) }), setSelections: docMethodOp(function(ranges, primary, options) { var this$1 = this; if (!ranges.length) { return } var out = [] for (var i = 0; i < ranges.length; i++) { out[i] = new Range(clipPos(this$1, ranges[i].anchor), clipPos(this$1, ranges[i].head)) } if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex) } setSelection(this, normalizeSelection(out, primary), options) }), addSelection: docMethodOp(function(anchor, head, options) { var ranges = this.sel.ranges.slice(0) ranges.push(new Range(clipPos(this, anchor), clipPos(this, head \|\| anchor))) setSelection(this, normalizeSelection(ranges, ranges.length - 1), options) }), getSelection: function(lineSep) { var this$1 = this; var ranges = this.sel.ranges, lines for (var i = 0; i < ranges.length; i++) { var sel = getBetween(this$1, ranges[i].from(), ranges[i].to()) lines = lines ? lines.concat(sel) : sel } if (lineSep === false) { return lines } else { return lines.join(lineSep \|\| this.lineSeparator()) } }, getSelections: function(lineSep) { var this$1 = this; var parts = [], ranges = this.sel.ranges for (var i = 0; i < ranges.length; i++) { var sel = getBetween(this$1, ranges[i].from(), ranges[i].to()) if (lineSep !== false) { sel = sel.join(lineSep \|\| this$1.lineSeparator()) } parts[i] = sel } return parts }, replaceSelection: function(code, collapse, origin) { var dup = [] for (var i = 0; i < this.sel.ranges.length; i++) { dup[i] = code } this.replaceSelections(dup, collapse, origin \|\| "+input") }, replaceSelections: docMethodOp(function(code, collapse, origin) { var this$1 = this; var changes = [], sel = this.sel for (var i = 0; i < sel.ranges.length; i++) { var range = sel.ranges[i] changes[i] = {from: range.from(), to: range.to(), text: this$1.splitLines(code[i]), origin: origin} } var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse) for (var i$1 = changes.length - 1; i$1 >= 0; i$1--) { makeChange(this$1, changes[i$1]) } if (newSel) { setSelectionReplaceHistory(this, newSel) } else if (this.cm) { ensureCursorVisible(this.cm) } }), undo: docMethodOp(function() {makeChangeFromHistory(this, "undo")}), redo: docMethodOp(function() {makeChangeFromHistory(this, "redo")}), undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true)}), redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true)}), setExtending: function(val) {this.extend = val}, getExtending: function() {return this.extend}, historySize: function() { var hist = this.history, done = 0, undone = 0 for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done } } for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone } } return {undo: done, redo: undone} }, clearHistory: function() {this.history = new History(this.history.maxGeneration)}, markClean: function() { this.cleanGeneration = this.changeGeneration(true) }, changeGeneration: function(forceSplit) { if (forceSplit) { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null } return this.history.generation }, isClean: function (gen) { return this.history.generation == (gen \|\| this.cleanGeneration) }, getHistory: function() { return {done: copyHistoryArray(this.history.done), undone: copyHistoryArray(this.history.undone)} }, setHistory: function(histData) { var hist = this.history = new History(this.history.maxGeneration) hist.done = copyHistoryArray(histData.done.slice(0), null, true) hist.undone = copyHistoryArray(histData.undone.slice(0), null, true) }, setGutterMarker: docMethodOp(function(line, gutterID, value) { return changeLine(this, line, "gutter", function (line) { var markers = line.gutterMarkers \|\| (line.gutterMarkers = {}) markers[gutterID] = value if (!value && isEmpty(markers)) { line.gutterMarkers = null } return true }) }), clearGutter: docMethodOp(function(gutterID) { var this$1 = this; this.iter(function (line) { if (line.gutterMarkers && line.gutterMarkers[gutterID]) { changeLine(this$1, line, "gutter", function () { line.gutterMarkers[gutterID] = null if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null } return true }) } }) }), lineInfo: function(line) { var n if (typeof line == "number") { if (!isLine(this, line)) { return null } n = line line = getLine(this, line) if (!line) { return null } } else { n = lineNo(line) if (n == null) { return null } } return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, widgets: line.widgets} }, addLineClass: docMethodOp(function(handle, where, cls) { return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) { var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : where == "gutter" ? "gutterClass" : "wrapClass" if (!line[prop]) { line[prop] = cls } else if (classTest(cls).test(line[prop])) { return false } else { line[prop] += " " + cls } return true }) }), removeLineClass: docMethodOp(function(handle, where, cls) { return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) { var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : where == "gutter" ? "gutterClass" : "wrapClass" var cur = line[prop] if (!cur) { return false } else if (cls == null) { line[prop] = null } else { var found = cur.match(classTest(cls)) if (!found) { return false } var end = found.index + found[0].length line[prop] = cur.slice(0, found.index) + (!found.index \|\| end == cur.length ? "" : " ") + cur.slice(end) \|\| null } return true }) }), addLineWidget: docMethodOp(function(handle, node, options) { return addLineWidget(this, handle, node, options) }), removeLineWidget: function(widget) { widget.clear() }, markText: function(from, to, options) { return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type \|\| "range") }, setBookmark: function(pos, options) { var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), insertLeft: options && options.insertLeft, clearWhenEmpty: false, shared: options && options.shared, handleMouseEvents: options && options.handleMouseEvents} pos = clipPos(this, pos) return markText(this, pos, pos, realOpts, "bookmark") }, findMarksAt: function(pos) { pos = clipPos(this, pos) var markers = [], spans = getLine(this, pos.line).markedSpans if (spans) { for (var i = 0; i < spans.length; ++i) { var span = spans[i] if ((span.from == null \|\| span.from <= pos.ch) && (span.to == null \|\| span.to >= pos.ch)) { markers.push(span.marker.parent \|\| span.marker) } } } return markers }, findMarks: function(from, to, filter) { from = clipPos(this, from); to = clipPos(this, to) var found = [], lineNo = from.line this.iter(from.line, to.line + 1, function (line) { var spans = line.markedSpans if (spans) { for (var i = 0; i < spans.length; i++) { var span = spans[i] if (!(span.to != null && lineNo == from.line && from.ch >= span.to \|\| span.from == null && lineNo != from.line \|\| span.from != null && lineNo == to.line && span.from >= to.ch) && (!filter \|\| filter(span.marker))) { found.push(span.marker.parent \|\| span.marker) } } } ++lineNo }) return found }, getAllMarks: function() { var markers = [] this.iter(function (line) { var sps = line.markedSpans if (sps) { for (var i = 0; i < sps.length; ++i) { if (sps[i].from != null) { markers.push(sps[i].marker) } } } }) return markers }, posFromIndex: function(off) { var ch, lineNo = this.first, sepSize = this.lineSeparator().length this.iter(function (line) { var sz = line.text.length + sepSize if (sz > off) { ch = off; return true } off -= sz ++lineNo }) return clipPos(this, Pos(lineNo, ch)) }, indexFromPos: function (coords) { coords = clipPos(this, coords) var index = coords.ch if (coords.line < this.first \|\| coords.ch < 0) { return 0 } var sepSize = this.lineSeparator().length this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value index += line.text.length + sepSize }) return index }, copy: function(copyHistory) { var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first, this.lineSep, this.direction) doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft doc.sel = this.sel doc.extend = false if (copyHistory) { doc.history.undoDepth = this.history.undoDepth doc.setHistory(this.getHistory()) } return doc }, linkedDoc: function(options) { if (!options) { options = {} } var from = this.first, to = this.first + this.size if (options.from != null && options.from > from) { from = options.from } if (options.to != null && options.to < to) { to = options.to } var copy = new Doc(getLines(this, from, to), options.mode \|\| this.modeOption, from, this.lineSep, this.direction) if (options.sharedHist) { copy.history = this.history ; }(this.linked \|\| (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}) copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}] copySharedMarkers(copy, findSharedMarkers(this)) return copy }, unlinkDoc: function(other) { var this$1 = this; if (other instanceof CodeMirror) { other = other.doc } if (this.linked) { for (var i = 0; i < this.linked.length; ++i) { var link = this$1.linked[i] if (link.doc != other) { continue } this$1.linked.splice(i, 1) other.unlinkDoc(this$1) detachSharedMarkers(findSharedMarkers(this$1)) break } } // If the histories were shared, split them again if (other.history == this.history) { var splitIds = [other.id] linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true) other.history = new History(null) other.history.done = copyHistoryArray(this.history.done, splitIds) other.history.undone = copyHistoryArray(this.history.undone, splitIds) } }, iterLinkedDocs: function(f) {linkedDocs(this, f)}, getMode: function() {return this.mode}, getEditor: function() {return this.cm}, splitLines: function(str) { if (this.lineSep) { return str.split(this.lineSep) } return splitLinesAuto(str) }, lineSeparator: function() { return this.lineSep \|\| "\n" }, setDirection: docMethodOp(function (dir) { if (dir != "rtl") { dir = "ltr" } if (dir == this.direction) { return } this.direction = dir this.iter(function (line) { return line.order = null; }) if (this.cm) { directionChanged(this.cm) } }) }) // Public alias. Doc.prototype.eachLine = Doc.prototype.iter // Kludge to work around strange IE behavior where it'll sometimes // re-fire a series of drag-related events right after the drop (#1551) var lastDrop = 0 function onDrop(e) { var cm = this clearDragCursor(cm) if (signalDOMEvent(cm, e) \|\| eventInWidget(cm.display, e)) { return } e_preventDefault(e) if (ie) { lastDrop = +new Date } var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files if (!pos \|\| cm.isReadOnly()) { return } // Might be a file drop, in which case we simply extract the text // and insert it. if (files && files.length && window.FileReader && window.File) { var n = files.length, text = Array(n), read = 0 var loadFile = function (file, i) { if (cm.options.allowDropFileTypes && indexOf(cm.options.allowDropFileTypes, file.type) == -1) { return } var reader = new FileReader reader.onload = operation(cm, function () { var content = reader.result if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) { content = "" } text[i] = content if (++read == n) { pos = clipPos(cm.doc, pos) var change = {from: pos, to: pos, text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())), origin: "paste"} makeChange(cm.doc, change) setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change))) } }) reader.readAsText(file) } for (var i = 0; i < n; ++i) { loadFile(files[i], i) } } else { // Normal drop // Don't do a replace if the drop happened inside of the selected text. if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) { cm.state.draggingText(e) // Ensure the editor is re-focused setTimeout(function () { return cm.display.input.focus(); }, 20) return } try { var text$1 = e.dataTransfer.getData("Text") if (text$1) { var selected if (cm.state.draggingText && !cm.state.draggingText.copy) { selected = cm.listSelections() } setSelectionNoUndo(cm.doc, simpleSelection(pos, pos)) if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1) { replaceRange(cm.doc, "", selected[i$1].anchor, selected[i$1].head, "drag") } } cm.replaceSelection(text$1, "around", "paste") cm.display.input.focus() } } catch(e){} } } function onDragStart(cm, e) { if (ie && (!cm.state.draggingText \|\| +new Date - lastDrop < 100)) { e_stop(e); return } if (signalDOMEvent(cm, e) \|\| eventInWidget(cm.display, e)) { return } e.dataTransfer.setData("Text", cm.getSelection()) e.dataTransfer.effectAllowed = "copyMove" // Use dummy image instead of default browsers image. // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. if (e.dataTransfer.setDragImage && !safari) { var img = elt("img", null, null, "position: fixed; left: 0; top: 0;") img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" if (presto) { img.width = img.height = 1 cm.display.wrapper.appendChild(img) // Force a relayout, or Opera won't use our image for some obscure reason img._top = img.offsetTop } e.dataTransfer.setDragImage(img, 0, 0) if (presto) { img.parentNode.removeChild(img) } } } function onDragOver(cm, e) { var pos = posFromMouse(cm, e) if (!pos) { return } var frag = document.createDocumentFragment() drawSelectionCursor(cm, pos, frag) if (!cm.display.dragCursor) { cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors") cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv) } removeChildrenAndAdd(cm.display.dragCursor, frag) } function clearDragCursor(cm) { if (cm.display.dragCursor) { cm.display.lineSpace.removeChild(cm.display.dragCursor) cm.display.dragCursor = null } } // These must be handled carefully, because naively registering a // handler for each editor will cause the editors to never be // garbage collected. function forEachCodeMirror(f) { if (!document.body.getElementsByClassName) { return } var byClass = document.body.getElementsByClassName("CodeMirror") for (var i = 0; i < byClass.length; i++) { var cm = byClass[i].CodeMirror if (cm) { f(cm) } } } var globalsRegistered = false function ensureGlobalHandlers() { if (globalsRegistered) { return } registerGlobalHandlers() globalsRegistered = true } function registerGlobalHandlers() { // When the window resizes, we need to refresh active editors. var resizeTimer on(window, "resize", function () { if (resizeTimer == null) { resizeTimer = setTimeout(function () { resizeTimer = null forEachCodeMirror(onResize) }, 100) } }) // When the window loses focus, we want to show the editor as blurred on(window, "blur", function () { return forEachCodeMirror(onBlur); }) } // Called when the window resizes function onResize(cm) { var d = cm.display if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth) { return } // Might be a text scaling operation, clear size caches. d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null d.scrollbarsClipped = false cm.setSize() } var keyNames = { 3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", 46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 106: "", 107: "=", 109: "-", 110: ".", 111: "/", 127: "Delete", 173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", 221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete", 63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert" } // Number keys for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i) } // Alphabetic keys for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1) } // Function keys for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = "F" + i$2 } var keyMap = {} keyMap.basic = { "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore", "Tab": "defaultTab", "Shift-Tab": "indentAuto", "Enter": "newlineAndIndent", "Insert": "toggleOverwrite", "Esc": "singleSelection" } // Note that the save and find-related commands aren't defined by // default. User code or addons can define them. Unknown commands // are simply ignored. keyMap.pcDefault = { "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown", "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection", fallthrough: "basic" } // Very basic readline/emacs-style bindings, which are standard on Mac. keyMap.emacsy = { "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars", "Ctrl-O": "openLine" } keyMap.macDefault = { "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore", "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight", "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd", fallthrough: ["basic", "emacsy"] } keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault // KEYMAP DISPATCH function normalizeKeyName(name) { var parts = name.split(/-(?!$)/) name = parts[parts.length - 1] var alt, ctrl, shift, cmd for (var i = 0; i < parts.length - 1; i++) { var mod = parts[i] if (/^(cmd\|meta\|m)$/i.test(mod)) { cmd = true } else if (/^a(lt)?$/i.test(mod)) { alt = true } else if (/^(c\|ctrl\|control)$/i.test(mod)) { ctrl = true } else if (/^s(hift)?$/i.test(mod)) { shift = true } else { throw new Error("Unrecognized modifier name: " + mod) } } if (alt) { name = "Alt-" + name } if (ctrl) { name = "Ctrl-" + name } if (cmd) { name = "Cmd-" + name } if (shift) { name = "Shift-" + name } return name } // This is a kludge to keep keymaps mostly working as raw objects // (backwards compatibility) while at the same time support features // like normalization and multi-stroke key bindings. It compiles a // new normalized keymap, and then updates the old object to reflect // this. function normalizeKeyMap(keymap) { var copy = {} for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) { var value = keymap[keyname] if (/^(name\|fallthrough\|(de\|at)tach)$/.test(keyname)) { continue } if (value == "...") { delete keymap[keyname]; continue } var keys = map(keyname.split(" "), normalizeKeyName) for (var i = 0; i < keys.length; i++) { var val = (void 0), name = (void 0) if (i == keys.length - 1) { name = keys.join(" ") val = value } else { name = keys.slice(0, i + 1).join(" ") val = "..." } var prev = copy[name] if (!prev) { copy[name] = val } else if (prev != val) { throw new Error("Inconsistent bindings for " + name) } } delete keymap[keyname] } } for (var prop in copy) { keymap[prop] = copy[prop] } return keymap } function lookupKey(key, map, handle, context) { map = getKeyMap(map) var found = map.call ? map.call(key, context) : map[key] if (found === false) { return "nothing" } if (found === "...") { return "multi" } if (found != null && handle(found)) { return "handled" } if (map.fallthrough) { if (Object.prototype.toString.call(map.fallthrough) != "[object Array]") { return lookupKey(key, map.fallthrough, handle, context) } for (var i = 0; i < map.fallthrough.length; i++) { var result = lookupKey(key, map.fallthrough[i], handle, context) if (result) { return result } } } } // Modifier key presses don't count as 'real' key presses for the // purpose of keymap fallthrough. function isModifierKey(value) { var name = typeof value == "string" ? value : keyNames[value.keyCode] return name == "Ctrl" \|\| name == "Alt" \|\| name == "Shift" \|\| name == "Mod" } // Look up the name of a key as indicated by an event object. function keyName(event, noShift) { if (presto && event.keyCode == 34 && event["char"]) { return false } var base = keyNames[event.keyCode], name = base if (name == null \|\| event.altGraphKey) { return false } if (event.altKey && base != "Alt") { name = "Alt-" + name } if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") { name = "Ctrl-" + name } if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") { name = "Cmd-" + name } if (!noShift && event.shiftKey && base != "Shift") { name = "Shift-" + name } return name } function getKeyMap(val) { return typeof val == "string" ? keyMap[val] : val } // Helper for deleting text near the selection(s), used to implement // backspace, delete, and similar functionality. function deleteNearSelection(cm, compute) { var ranges = cm.doc.sel.ranges, kill = [] // Build up a set of ranges to kill first, merging overlapping // ranges. for (var i = 0; i < ranges.length; i++) { var toKill = compute(ranges[i]) while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) { var replaced = kill.pop() if (cmp(replaced.from, toKill.from) < 0) { toKill.from = replaced.from break } } kill.push(toKill) } // Next, remove those actual ranges. runInOp(cm, function () { for (var i = kill.length - 1; i >= 0; i--) { replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete") } ensureCursorVisible(cm) }) } // Commands are parameter-less actions that can be performed on an // editor, mostly used for keybindings. var commands = { selectAll: selectAll, singleSelection: function (cm) { return cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); }, killLine: function (cm) { return deleteNearSelection(cm, function (range) { if (range.empty()) { var len = getLine(cm.doc, range.head.line).text.length if (range.head.ch == len && range.head.line < cm.lastLine()) { return {from: range.head, to: Pos(range.head.line + 1, 0)} } else { return {from: range.head, to: Pos(range.head.line, len)} } } else { return {from: range.from(), to: range.to()} } }); }, deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({ from: Pos(range.from().line, 0), to: clipPos(cm.doc, Pos(range.to().line + 1, 0)) }); }); }, delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({ from: Pos(range.from().line, 0), to: range.from() }); }); }, delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { var top = cm.charCoords(range.head, "div").top + 5 var leftPos = cm.coordsChar({left: 0, top: top}, "div") return {from: leftPos, to: range.from()} }); }, delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) { var top = cm.charCoords(range.head, "div").top + 5 var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div") return {from: range.from(), to: rightPos } }); }, undo: function (cm) { return cm.undo(); }, redo: function (cm) { return cm.redo(); }, undoSelection: function (cm) { return cm.undoSelection(); }, redoSelection: function (cm) { return cm.redoSelection(); }, goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); }, goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); }, goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); }, {origin: "+move", bias: 1} ); }, goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); }, {origin: "+move", bias: 1} ); }, goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); }, {origin: "+move", bias: -1} ); }, goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) { var top = cm.charCoords(range.head, "div").top + 5 return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div") }, sel_move); }, goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) { var top = cm.charCoords(range.head, "div").top + 5 return cm.coordsChar({left: 0, top: top}, "div") }, sel_move); }, goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) { var top = cm.charCoords(range.head, "div").top + 5 var pos = cm.coordsChar({left: 0, top: top}, "div") if (pos.ch < cm.getLine(pos.line).search(/\S/)) { return lineStartSmart(cm, range.head) } return pos }, sel_move); }, goLineUp: function (cm) { return cm.moveV(-1, "line"); }, goLineDown: function (cm) { return cm.moveV(1, "line"); }, goPageUp: function (cm) { return cm.moveV(-1, "page"); }, goPageDown: function (cm) { return cm.moveV(1, "page"); }, goCharLeft: function (cm) { return cm.moveH(-1, "char"); }, goCharRight: function (cm) { return cm.moveH(1, "char"); }, goColumnLeft: function (cm) { return cm.moveH(-1, "column"); }, goColumnRight: function (cm) { return cm.moveH(1, "column"); }, goWordLeft: function (cm) { return cm.moveH(-1, "word"); }, goGroupRight: function (cm) { return cm.moveH(1, "group"); }, goGroupLeft: function (cm) { return cm.moveH(-1, "group"); }, goWordRight: function (cm) { return cm.moveH(1, "word"); }, delCharBefore: function (cm) { return cm.deleteH(-1, "char"); }, delCharAfter: function (cm) { return cm.deleteH(1, "char"); }, delWordBefore: function (cm) { return cm.deleteH(-1, "word"); }, delWordAfter: function (cm) { return cm.deleteH(1, "word"); }, delGroupBefore: function (cm) { return cm.deleteH(-1, "group"); }, delGroupAfter: function (cm) { return cm.deleteH(1, "group"); }, indentAuto: function (cm) { return cm.indentSelection("smart"); }, indentMore: function (cm) { return cm.indentSelection("add"); }, indentLess: function (cm) { return cm.indentSelection("subtract"); }, insertTab: function (cm) { return cm.replaceSelection("\t"); }, insertSoftTab: function (cm) { var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize for (var i = 0; i < ranges.length; i++) { var pos = ranges[i].from() var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize) spaces.push(spaceStr(tabSize - col % tabSize)) } cm.replaceSelections(spaces) }, defaultTab: function (cm) { if (cm.somethingSelected()) { cm.indentSelection("add") } else { cm.execCommand("insertTab") } }, // Swap the two chars left and right of each selection's head. // Move cursor behind the two swapped characters afterwards. // // Doesn't consider line feeds a character. // Doesn't scan more than one line above to find a character. // Doesn't do anything on an empty line. // Doesn't do anything with non-empty selections. transposeChars: function (cm) { return runInOp(cm, function () { var ranges = cm.listSelections(), newSel = [] for (var i = 0; i < ranges.length; i++) { if (!ranges[i].empty()) { continue } var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text if (line) { if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1) } if (cur.ch > 0) { cur = new Pos(cur.line, cur.ch + 1) cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2), Pos(cur.line, cur.ch - 2), cur, "+transpose") } else if (cur.line > cm.doc.first) { var prev = getLine(cm.doc, cur.line - 1).text if (prev) { cur = new Pos(cur.line, 1) cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() + prev.charAt(prev.length - 1), Pos(cur.line - 1, prev.length - 1), cur, "+transpose") } } } newSel.push(new Range(cur, cur)) } cm.setSelections(newSel) }); }, newlineAndIndent: function (cm) { return runInOp(cm, function () { var sels = cm.listSelections() for (var i = sels.length - 1; i >= 0; i--) { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, "+input") } sels = cm.listSelections() for (var i$1 = 0; i$1 < sels.length; i$1++) { cm.indentLine(sels[i$1].from().line, null, true) } ensureCursorVisible(cm) }); }, openLine: function (cm) { return cm.replaceSelection("\n", "start"); }, toggleOverwrite: function (cm) { return cm.toggleOverwrite(); } } function lineStart(cm, lineN) { var line = getLine(cm.doc, lineN) var visual = visualLine(line) if (visual != line) { lineN = lineNo(visual) } return endOfLine(true, cm, visual, lineN, 1) } function lineEnd(cm, lineN) { var line = getLine(cm.doc, lineN) var visual = visualLineEnd(line) if (visual != line) { lineN = lineNo(visual) } return endOfLine(true, cm, line, lineN, -1) } function lineStartSmart(cm, pos) { var start = lineStart(cm, pos.line) var line = getLine(cm.doc, start.line) var order = getOrder(line, cm.doc.direction) if (!order \|\| order[0].level == 0) { var firstNonWS = Math.max(0, line.text.search(/\S/)) var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky) } return start } // Run a handler that was bound to a key. function doHandleBinding(cm, bound, dropShift) { if (typeof bound == "string") { bound = commands[bound] if (!bound) { return false } } // Ensure previous input has been read, so that the handler sees a // consistent view of the document cm.display.input.ensurePolled() var prevShift = cm.display.shift, done = false try { if (cm.isReadOnly()) { cm.state.suppressEdits = true } if (dropShift) { cm.display.shift = false } done = bound(cm) != Pass } finally { cm.display.shift = prevShift cm.state.suppressEdits = false } return done } function lookupKeyForEditor(cm, name, handle) { for (var i = 0; i < cm.state.keyMaps.length; i++) { var result = lookupKey(name, cm.state.keyMaps[i], handle, cm) if (result) { return result } } return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm)) \|\| lookupKey(name, cm.options.keyMap, handle, cm) } var stopSeq = new Delayed function dispatchKey(cm, name, e, handle) { var seq = cm.state.keySeq if (seq) { if (isModifierKey(name)) { return "handled" } stopSeq.set(50, function () { if (cm.state.keySeq == seq) { cm.state.keySeq = null cm.display.input.reset() } }) name = seq + " " + name } var result = lookupKeyForEditor(cm, name, handle) if (result == "multi") { cm.state.keySeq = name } if (result == "handled") { signalLater(cm, "keyHandled", cm, name, e) } if (result == "handled" \|\| result == "multi") { e_preventDefault(e) restartBlink(cm) } if (seq && !result && /\'$/.test(name)) { e_preventDefault(e) return true } return !!result } // Handle a key from the keydown event. function handleKeyBinding(cm, e) { var name = keyName(e, true) if (!name) { return false } if (e.shiftKey && !cm.state.keySeq) { // First try to resolve full name (including 'Shift-'). Failing // that, see if there is a cursor-motion command (starting with // 'go') bound to the keyname without 'Shift-'. return dispatchKey(cm, "Shift-" + name, e, function (b) { return doHandleBinding(cm, b, true); }) \|\| dispatchKey(cm, name, e, function (b) { if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) { return doHandleBinding(cm, b) } }) } else { return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); }) } } // Handle a key from the keypress event function handleCharBinding(cm, e, ch) { return dispatchKey(cm, "'" + ch + "'", e, function (b) { return doHandleBinding(cm, b, true); }) } var lastStoppedKey = null function onKeyDown(e) { var cm = this cm.curOp.focus = activeElt() if (signalDOMEvent(cm, e)) { return } // IE does strange things with escape. if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false } var code = e.keyCode cm.display.shift = code == 16 \|\| e.shiftKey var handled = handleKeyBinding(cm, e) if (presto) { lastStoppedKey = handled ? code : null // Opera has no cut event... we try to at least catch the key combo if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) { cm.replaceSelection("", null, "cut") } } // Turn mouse into crosshair when Alt is held on Mac. if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className)) { showCrossHair(cm) } } function showCrossHair(cm) { var lineDiv = cm.display.lineDiv addClass(lineDiv, "CodeMirror-crosshair") function up(e) { if (e.keyCode == 18 \|\| !e.altKey) { rmClass(lineDiv, "CodeMirror-crosshair") off(document, "keyup", up) off(document, "mouseover", up) } } on(document, "keyup", up) on(document, "mouseover", up) } function onKeyUp(e) { if (e.keyCode == 16) { this.doc.sel.shift = false } signalDOMEvent(this, e) } function onKeyPress(e) { var cm = this if (eventInWidget(cm.display, e) \|\| signalDOMEvent(cm, e) \|\| e.ctrlKey && !e.altKey \|\| mac && e.metaKey) { return } var keyCode = e.keyCode, charCode = e.charCode if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return} if ((presto && (!e.which \|\| e.which < 10)) && handleKeyBinding(cm, e)) { return } var ch = String.fromCharCode(charCode == null ? keyCode : charCode) // Some browsers fire keypress events for backspace if (ch == "\x08") { return } if (handleCharBinding(cm, e, ch)) { return } cm.display.input.onKeyPress(e) } // A mouse down can be a single click, double click, triple click, // start of selection drag, start of text drag, new cursor // (ctrl-click), rectangle drag (alt-drag), or xwin // middle-click-paste. Or it might be a click on something we should // not interfere with, such as a scrollbar or widget. function onMouseDown(e) { var cm = this, display = cm.display if (signalDOMEvent(cm, e) \|\| display.activeTouch && display.input.supportsTouch()) { return } display.input.ensurePolled() display.shift = e.shiftKey if (eventInWidget(display, e)) { if (!webkit) { // Briefly turn off draggability, to allow widgets to do // normal dragging things. display.scroller.draggable = false setTimeout(function () { return display.scroller.draggable = true; }, 100) } return } if (clickInGutter(cm, e)) { return } var start = posFromMouse(cm, e) window.focus() switch (e_button(e)) { case 1: // #3261: make sure, that we're not starting a second selection if (cm.state.selectingText) { cm.state.selectingText(e) } else if (start) { leftButtonDown(cm, e, start) } else if (e_target(e) == display.scroller) { e_preventDefault(e) } break case 2: if (webkit) { cm.state.lastMiddleDown = +new Date } if (start) { extendSelection(cm.doc, start) } setTimeout(function () { return display.input.focus(); }, 20) e_preventDefault(e) break case 3: if (captureRightClick) { onContextMenu(cm, e) } else { delayBlurEvent(cm) } break } } var lastClick; var lastDoubleClick; function leftButtonDown(cm, e, start) { if (ie) { setTimeout(bind(ensureFocus, cm), 0) } else { cm.curOp.focus = activeElt() } var now = +new Date, type if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) { type = "triple" } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) { type = "double" lastDoubleClick = {time: now, pos: start} } else { type = "single" lastClick = {time: now, pos: start} } var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() && type == "single" && (contained = sel.contains(start)) > -1 && (cmp((contained = sel.ranges[contained]).from(), start) < 0 \|\| start.xRel > 0) && (cmp(contained.to(), start) > 0 \|\| start.xRel < 0)) { leftButtonStartDrag(cm, e, start, modifier) } else { leftButtonSelect(cm, e, start, type, modifier) } } // Start a text drag. When it ends, see if any dragging actually // happen, and treat as a click if it didn't. function leftButtonStartDrag(cm, e, start, modifier) { var display = cm.display, startTime = +new Date var dragEnd = operation(cm, function (e2) { if (webkit) { display.scroller.draggable = false } cm.state.draggingText = false off(document, "mouseup", dragEnd) off(display.scroller, "drop", dragEnd) if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) { e_preventDefault(e2) if (!modifier && +new Date - 200 < startTime) { extendSelection(cm.doc, start) } // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081) if (webkit \|\| ie && ie_version == 9) { setTimeout(function () {document.body.focus(); display.input.focus()}, 20) } else { display.input.focus() } } }) // Let the drag handler handle this. if (webkit) { display.scroller.draggable = true } cm.state.draggingText = dragEnd dragEnd.copy = mac ? e.altKey : e.ctrlKey // IE's approach to draggable if (display.scroller.dragDrop) { display.scroller.dragDrop() } on(document, "mouseup", dragEnd) on(display.scroller, "drop", dragEnd) } // Normal selection, as opposed to text dragging. function leftButtonSelect(cm, e, start, type, addNew) { var display = cm.display, doc = cm.doc e_preventDefault(e) var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges if (addNew && !e.shiftKey) { ourIndex = doc.sel.contains(start) if (ourIndex > -1) { ourRange = ranges[ourIndex] } else { ourRange = new Range(start, start) } } else { ourRange = doc.sel.primary() ourIndex = doc.sel.primIndex } if (chromeOS ? e.shiftKey && e.metaKey : e.altKey) { type = "rect" if (!addNew) { ourRange = new Range(start, start) } start = posFromMouse(cm, e, true, true) ourIndex = -1 } else if (type == "double") { var word = cm.findWordAt(start) if (cm.display.shift \|\| doc.extend) { ourRange = extendRange(doc, ourRange, word.anchor, word.head) } else { ourRange = word } } else if (type == "triple") { var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0))) if (cm.display.shift \|\| doc.extend) { ourRange = extendRange(doc, ourRange, line.anchor, line.head) } else { ourRange = line } } else { ourRange = extendRange(doc, ourRange, start) } if (!addNew) { ourIndex = 0 setSelection(doc, new Selection([ourRange], 0), sel_mouse) startSel = doc.sel } else if (ourIndex == -1) { ourIndex = ranges.length setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex), {scroll: false, origin: "mouse"}) } else if (ranges.length > 1 && ranges[ourIndex].empty() && type == "single" && !e.shiftKey) { setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0), {scroll: false, origin: "mouse"}) startSel = doc.sel } else { replaceOneSelection(doc, ourIndex, ourRange, sel_mouse) } var lastPos = start function extendTo(pos) { if (cmp(lastPos, pos) == 0) { return } lastPos = pos if (type == "rect") { var ranges = [], tabSize = cm.options.tabSize var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize) var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize) var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol) for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line)); line <= end; line++) { var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize) if (left == right) { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))) } else if (text.length > leftPos) { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))) } } if (!ranges.length) { ranges.push(new Range(start, start)) } setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex), {origin: "mouse", scroll: false}) cm.scrollIntoView(pos) } else { var oldRange = ourRange var anchor = oldRange.anchor, head = pos if (type != "single") { var range if (type == "double") { range = cm.findWordAt(pos) } else { range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0))) } if (cmp(range.anchor, anchor) > 0) { head = range.head anchor = minPos(oldRange.from(), range.anchor) } else { head = range.anchor anchor = maxPos(oldRange.to(), range.head) } } var ranges$1 = startSel.ranges.slice(0) ranges$1[ourIndex] = new Range(clipPos(doc, anchor), head) setSelection(doc, normalizeSelection(ranges$1, ourIndex), sel_mouse) } } var editorSize = display.wrapper.getBoundingClientRect() // Used to ensure timeout re-tries don't fire when another extend // happened in the meantime (clearTimeout isn't reliable -- at // least on Chrome, the timeouts still happen even when cleared, // if the clear happens after their scheduled firing time). var counter = 0 function extend(e) { var curCount = ++counter var cur = posFromMouse(cm, e, true, type == "rect") if (!cur) { return } if (cmp(cur, lastPos) != 0) { cm.curOp.focus = activeElt() extendTo(cur) var visible = visibleLines(display, doc) if (cur.line >= visible.to \|\| cur.line < visible.from) { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e) }}), 150) } } else { var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0 if (outside) { setTimeout(operation(cm, function () { if (counter != curCount) { return } display.scroller.scrollTop += outside extend(e) }), 50) } } } function done(e) { cm.state.selectingText = false counter = Infinity e_preventDefault(e) display.input.focus() off(document, "mousemove", move) off(document, "mouseup", up) doc.history.lastSelOrigin = null } var move = operation(cm, function (e) { if (!e_button(e)) { done(e) } else { extend(e) } }) var up = operation(cm, done) cm.state.selectingText = up on(document, "mousemove", move) on(document, "mouseup", up) } // Determines whether an event happened in the gutter, and fires the // handlers for the corresponding event. function gutterEvent(cm, e, type, prevent) { var mX, mY try { mX = e.clientX; mY = e.clientY } catch(e) { return false } if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false } if (prevent) { e_preventDefault(e) } var display = cm.display var lineBox = display.lineDiv.getBoundingClientRect() if (mY > lineBox.bottom \|\| !hasHandler(cm, type)) { return e_defaultPrevented(e) } mY -= lineBox.top - display.viewOffset for (var i = 0; i < cm.options.gutters.length; ++i) { var g = display.gutters.childNodes[i] if (g && g.getBoundingClientRect().right >= mX) { var line = lineAtHeight(cm.doc, mY) var gutter = cm.options.gutters[i] signal(cm, type, cm, line, gutter, e) return e_defaultPrevented(e) } } } function clickInGutter(cm, e) { return gutterEvent(cm, e, "gutterClick", true) } // CONTEXT MENU HANDLING // To make the context menu work, we need to briefly unhide the // textarea (making it as unobtrusive as possible) to let the // right-click take effect on it. function onContextMenu(cm, e) { if (eventInWidget(cm.display, e) \|\| contextMenuInGutter(cm, e)) { return } if (signalDOMEvent(cm, e, "contextmenu")) { return } cm.display.input.onContextMenu(e) } function contextMenuInGutter(cm, e) { if (!hasHandler(cm, "gutterContextMenu")) { return false } return gutterEvent(cm, e, "gutterContextMenu", false) } function themeChanged(cm) { cm.display.wrapper.className = cm.display.wrapper.className.replace(/\scm-s-\S+/g, "") + cm.options.theme.replace(/(^\|\s)\s/g, " cm-s-") clearCaches(cm) } var Init = {toString: function(){return "CodeMirror.Init"}} var defaults = {} var optionHandlers = {} function defineOptions(CodeMirror) { var optionHandlers = CodeMirror.optionHandlers function option(name, deflt, handle, notOnInit) { CodeMirror.defaults[name] = deflt if (handle) { optionHandlers[name] = notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old) }} : handle } } CodeMirror.defineOption = option // Passed to option handlers when there is no old value. CodeMirror.Init = Init // These two are, on init, called from the constructor because they // have to be initialized before the editor can start at all. option("value", "", function (cm, val) { return cm.setValue(val); }, true) option("mode", null, function (cm, val) { cm.doc.modeOption = val loadMode(cm) }, true) option("indentUnit", 2, loadMode, true) option("indentWithTabs", false) option("smartIndent", true) option("tabSize", 4, function (cm) { resetModeState(cm) clearCaches(cm) regChange(cm) }, true) option("lineSeparator", null, function (cm, val) { cm.doc.lineSep = val if (!val) { return } var newBreaks = [], lineNo = cm.doc.first cm.doc.iter(function (line) { for (var pos = 0;;) { var found = line.text.indexOf(val, pos) if (found == -1) { break } pos = found + val.length newBreaks.push(Pos(lineNo, found)) } lineNo++ }) for (var i = newBreaks.length - 1; i >= 0; i--) { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)) } }) option("specialChars", /[\u0000-\u001f\u007f-\u009f\u00ad\u061c\u200b-\u200f\u2028\u2029\ufeff]/g, function (cm, val, old) { cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "\|\t"), "g") if (old != Init) { cm.refresh() } }) option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true) option("electricChars", true) option("inputStyle", mobile ? "contenteditable" : "textarea", function () { throw new Error("inputStyle can not (yet) be changed in a running editor") // FIXME }, true) option("spellcheck", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true) option("rtlMoveVisually", !windows) option("wholeLineUpdateBefore", true) option("theme", "default", function (cm) { themeChanged(cm) guttersChanged(cm) }, true) option("keyMap", "default", function (cm, val, old) { var next = getKeyMap(val) var prev = old != Init && getKeyMap(old) if (prev && prev.detach) { prev.detach(cm, next) } if (next.attach) { next.attach(cm, prev \|\| null) } }) option("extraKeys", null) option("lineWrapping", false, wrappingChanged, true) option("gutters", [], function (cm) { setGuttersForLineNumbers(cm.options) guttersChanged(cm) }, true) option("fixedGutter", true, function (cm, val) { cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0" cm.refresh() }, true) option("coverGutterNextToScrollbar", false, function (cm) { return updateScrollbars(cm); }, true) option("scrollbarStyle", "native", function (cm) { initScrollbars(cm) updateScrollbars(cm) cm.display.scrollbars.setScrollTop(cm.doc.scrollTop) cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft) }, true) option("lineNumbers", false, function (cm) { setGuttersForLineNumbers(cm.options) guttersChanged(cm) }, true) option("firstLineNumber", 1, guttersChanged, true) option("lineNumberFormatter", function (integer) { return integer; }, guttersChanged, true) option("showCursorWhenSelecting", false, updateSelection, true) option("resetSelectionOnContextMenu", true) option("lineWiseCopyCut", true) option("readOnly", false, function (cm, val) { if (val == "nocursor") { onBlur(cm) cm.display.input.blur() cm.display.disabled = true } else { cm.display.disabled = false } cm.display.input.readOnlyChanged(val) }) option("disableInput", false, function (cm, val) {if (!val) { cm.display.input.reset() }}, true) option("dragDrop", true, dragDropChanged) option("allowDropFileTypes", null) option("cursorBlinkRate", 530) option("cursorScrollMargin", 0) option("cursorHeight", 1, updateSelection, true) option("singleCursorHeightPerLine", true, updateSelection, true) option("workTime", 100) option("workDelay", 100) option("flattenSpans", true, resetModeState, true) option("addModeClass", false, resetModeState, true) option("pollInterval", 100) option("undoDepth", 200, function (cm, val) { return cm.doc.history.undoDepth = val; }) option("historyEventDelay", 1250) option("viewportMargin", 10, function (cm) { return cm.refresh(); }, true) option("maxHighlightLength", 10000, resetModeState, true) option("moveInputWithCursor", true, function (cm, val) { if (!val) { cm.display.input.resetPosition() } }) option("tabindex", null, function (cm, val) { return cm.display.input.getField().tabIndex = val \|\| ""; }) option("autofocus", null) option("direction", "ltr", function (cm, val) { return cm.doc.setDirection(val); }, true) } function guttersChanged(cm) { updateGutters(cm) regChange(cm) alignHorizontally(cm) } function dragDropChanged(cm, value, old) { var wasOn = old && old != Init if (!value != !wasOn) { var funcs = cm.display.dragFunctions var toggle = value ? on : off toggle(cm.display.scroller, "dragstart", funcs.start) toggle(cm.display.scroller, "dragenter", funcs.enter) toggle(cm.display.scroller, "dragover", funcs.over) toggle(cm.display.scroller, "dragleave", funcs.leave) toggle(cm.display.scroller, "drop", funcs.drop) } } function wrappingChanged(cm) { if (cm.options.lineWrapping) { addClass(cm.display.wrapper, "CodeMirror-wrap") cm.display.sizer.style.minWidth = "" cm.display.sizerWidth = null } else { rmClass(cm.display.wrapper, "CodeMirror-wrap") findMaxLine(cm) } estimateLineHeights(cm) regChange(cm) clearCaches(cm) setTimeout(function () { return updateScrollbars(cm); }, 100) } // A CodeMirror instance represents an editor. This is the object // that user code is usually dealing with. function CodeMirror(place, options) { var this$1 = this; if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) } this.options = options = options ? copyObj(options) : {} // Determine effective options based on given values and defaults. copyObj(defaults, options, false) setGuttersForLineNumbers(options) var doc = options.value if (typeof doc == "string") { doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction) } this.doc = doc var input = new CodeMirror.inputStyles[options.inputStyle](this) var display = this.display = new Display(place, doc, input) display.wrapper.CodeMirror = this updateGutters(this) themeChanged(this) if (options.lineWrapping) { this.display.wrapper.className += " CodeMirror-wrap" } initScrollbars(this) this.state = { keyMaps: [], // stores maps added by addKeyMap overlays: [], // highlighting overlays, as added by addOverlay modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info overwrite: false, delayingBlurEvent: false, focused: false, suppressEdits: false, // used to disable editing during key handlers when in readOnly mode pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll selectingText: false, draggingText: false, highlight: new Delayed(), // stores highlight worker timeout keySeq: null, // Unfinished key sequence specialChars: null } if (options.autofocus && !mobile) { display.input.focus() } // Override magic textarea content restore that IE sometimes does // on our hidden textarea on reload if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20) } registerEventHandlers(this) ensureGlobalHandlers() startOperation(this) this.curOp.forceUpdate = true attachDoc(this, doc) if ((options.autofocus && !mobile) \|\| this.hasFocus()) { setTimeout(bind(onFocus, this), 20) } else { onBlur(this) } for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt)) { optionHandlers[opt](this$1, options[opt], Init) } } maybeUpdateLineNumberWidth(this) if (options.finishInit) { options.finishInit(this) } for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this$1) } endOperation(this) // Suppress optimizelegibility in Webkit, since it breaks text // measuring on line wrapping boundaries. if (webkit && options.lineWrapping && getComputedStyle(display.lineDiv).textRendering == "optimizelegibility") { display.lineDiv.style.textRendering = "auto" } } // The default configuration options. CodeMirror.defaults = defaults // Functions to run when options are changed. CodeMirror.optionHandlers = optionHandlers // Attach the necessary event handlers when initializing the editor function registerEventHandlers(cm) { var d = cm.display on(d.scroller, "mousedown", operation(cm, onMouseDown)) // Older IE's will not fire a second mousedown for a double click if (ie && ie_version < 11) { on(d.scroller, "dblclick", operation(cm, function (e) { if (signalDOMEvent(cm, e)) { return } var pos = posFromMouse(cm, e) if (!pos \|\| clickInGutter(cm, e) \|\| eventInWidget(cm.display, e)) { return } e_preventDefault(e) var word = cm.findWordAt(pos) extendSelection(cm.doc, word.anchor, word.head) })) } else { on(d.scroller, "dblclick", function (e) { return signalDOMEvent(cm, e) \|\| e_preventDefault(e); }) } // Some browsers fire contextmenu after opening the menu, at // which point we can't mess with it anymore. Context menu is // handled in onMouseDown for these browsers. if (!captureRightClick) { on(d.scroller, "contextmenu", function (e) { return onContextMenu(cm, e); }) } // Used to suppress mouse event handling when a touch happens var touchFinished, prevTouch = {end: 0} function finishTouch() { if (d.activeTouch) { touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000) prevTouch = d.activeTouch prevTouch.end = +new Date } } function isMouseLikeTouchEvent(e) { if (e.touches.length != 1) { return false } var touch = e.touches[0] return touch.radiusX <= 1 && touch.radiusY <= 1 } function farAway(touch, other) { if (other.left == null) { return true } var dx = other.left - touch.left, dy = other.top - touch.top return dx * dx + dy * dy > 20 * 20 } on(d.scroller, "touchstart", function (e) { if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e)) { d.input.ensurePolled() clearTimeout(touchFinished) var now = +new Date d.activeTouch = {start: now, moved: false, prev: now - prevTouch.end <= 300 ? prevTouch : null} if (e.touches.length == 1) { d.activeTouch.left = e.touches[0].pageX d.activeTouch.top = e.touches[0].pageY } } }) on(d.scroller, "touchmove", function () { if (d.activeTouch) { d.activeTouch.moved = true } }) on(d.scroller, "touchend", function (e) { var touch = d.activeTouch if (touch && !eventInWidget(d, e) && touch.left != null && !touch.moved && new Date - touch.start < 300) { var pos = cm.coordsChar(d.activeTouch, "page"), range if (!touch.prev \|\| farAway(touch, touch.prev)) // Single tap { range = new Range(pos, pos) } else if (!touch.prev.prev \|\| farAway(touch, touch.prev.prev)) // Double tap { range = cm.findWordAt(pos) } else // Triple tap { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) } cm.setSelection(range.anchor, range.head) cm.focus() e_preventDefault(e) } finishTouch() }) on(d.scroller, "touchcancel", finishTouch) // Sync scrolling between fake scrollbars and real scrollable // area, ensure viewport is updated when scrolling. on(d.scroller, "scroll", function () { if (d.scroller.clientHeight) { setScrollTop(cm, d.scroller.scrollTop) setScrollLeft(cm, d.scroller.scrollLeft, true) signal(cm, "scroll", cm) } }) // Listen to wheel events in order to try and update the viewport on time. on(d.scroller, "mousewheel", function (e) { return onScrollWheel(cm, e); }) on(d.scroller, "DOMMouseScroll", function (e) { return onScrollWheel(cm, e); }) // Prevent wrapper from ever scrolling on(d.wrapper, "scroll", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }) d.dragFunctions = { enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e) }}, over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e) }}, start: function (e) { return onDragStart(cm, e); }, drop: operation(cm, onDrop), leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm) }} } var inp = d.input.getField() on(inp, "keyup", function (e) { return onKeyUp.call(cm, e); }) on(inp, "keydown", operation(cm, onKeyDown)) on(inp, "keypress", operation(cm, onKeyPress)) on(inp, "focus", function (e) { return onFocus(cm, e); }) on(inp, "blur", function (e) { return onBlur(cm, e); }) } var initHooks = [] CodeMirror.defineInitHook = function (f) { return initHooks.push(f); } // Indent the given line. The how parameter can be "smart", // "add"/null, "subtract", or "prev". When aggressive is false // (typically set to true for forced single-line indents), empty // lines are not indented, and places where the mode returns Pass // are left alone. function indentLine(cm, n, how, aggressive) { var doc = cm.doc, state if (how == null) { how = "add" } if (how == "smart") { // Fall back to "prev" when the mode doesn't have an indentation // method. if (!doc.mode.indent) { how = "prev" } else { state = getStateBefore(cm, n) } } var tabSize = cm.options.tabSize var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize) if (line.stateAfter) { line.stateAfter = null } var curSpaceString = line.text.match(/^\s/)[0], indentation if (!aggressive && !/\S/.test(line.text)) { indentation = 0 how = "not" } else if (how == "smart") { indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text) if (indentation == Pass \|\| indentation > 150) { if (!aggressive) { return } how = "prev" } } if (how == "prev") { if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize) } else { indentation = 0 } } else if (how == "add") { indentation = curSpace + cm.options.indentUnit } else if (how == "subtract") { indentation = curSpace - cm.options.indentUnit } else if (typeof how == "number") { indentation = curSpace + how } indentation = Math.max(0, indentation) var indentString = "", pos = 0 if (cm.options.indentWithTabs) { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t"} } if (pos < indentation) { indentString += spaceStr(indentation - pos) } if (indentString != curSpaceString) { replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input") line.stateAfter = null return true } else { // Ensure that, if the cursor was in the whitespace at the start // of the line, it is moved to the end of that space. for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) { var range = doc.sel.ranges[i$1] if (range.head.line == n && range.head.ch < curSpaceString.length) { var pos$1 = Pos(n, curSpaceString.length) replaceOneSelection(doc, i$1, new Range(pos$1, pos$1)) break } } } } // This will be set to a {lineWise: bool, text: [string]} object, so // that, when pasting, we know what kind of selections the copied // text was made out of. var lastCopied = null function setLastCopied(newLastCopied) { lastCopied = newLastCopied } function applyTextInput(cm, inserted, deleted, sel, origin) { var doc = cm.doc cm.display.shift = false if (!sel) { sel = doc.sel } var paste = cm.state.pasteIncoming \|\| origin == "paste" var textLines = splitLinesAuto(inserted), multiPaste = null // When pasing N lines into N selections, insert one line per selection if (paste && sel.ranges.length > 1) { if (lastCopied && lastCopied.text.join("\n") == inserted) { if (sel.ranges.length % lastCopied.text.length == 0) { multiPaste = [] for (var i = 0; i < lastCopied.text.length; i++) { multiPaste.push(doc.splitLines(lastCopied.text[i])) } } } else if (textLines.length == sel.ranges.length) { multiPaste = map(textLines, function (l) { return [l]; }) } } var updateInput // Normal behavior is to insert the new text into every selection for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) { var range = sel.ranges[i$1] var from = range.from(), to = range.to() if (range.empty()) { if (deleted && deleted > 0) // Handle deletion { from = Pos(from.line, from.ch - deleted) } else if (cm.state.overwrite && !paste) // Handle overwrite { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)) } else if (lastCopied && lastCopied.lineWise && lastCopied.text.join("\n") == inserted) { from = to = Pos(from.line, 0) } } updateInput = cm.curOp.updateInput var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines, origin: origin \|\| (paste ? "paste" : cm.state.cutIncoming ? "cut" : "+input")} makeChange(cm.doc, changeEvent) signalLater(cm, "inputRead", cm, changeEvent) } if (inserted && !paste) { triggerElectric(cm, inserted) } ensureCursorVisible(cm) cm.curOp.updateInput = updateInput cm.curOp.typing = true cm.state.pasteIncoming = cm.state.cutIncoming = false } function handlePaste(e, cm) { var pasted = e.clipboardData && e.clipboardData.getData("Text") if (pasted) { e.preventDefault() if (!cm.isReadOnly() && !cm.options.disableInput) { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, "paste"); }) } return true } } function triggerElectric(cm, inserted) { // When an 'electric' character is inserted, immediately trigger a reindent if (!cm.options.electricChars \|\| !cm.options.smartIndent) { return } var sel = cm.doc.sel for (var i = sel.ranges.length - 1; i >= 0; i--) { var range = sel.ranges[i] if (range.head.ch > 100 \|\| (i && sel.ranges[i - 1].head.line == range.head.line)) { continue } var mode = cm.getModeAt(range.head) var indented = false if (mode.electricChars) { for (var j = 0; j < mode.electricChars.length; j++) { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) { indented = indentLine(cm, range.head.line, "smart") break } } } else if (mode.electricInput) { if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch))) { indented = indentLine(cm, range.head.line, "smart") } } if (indented) { signalLater(cm, "electricInput", cm, range.head.line) } } } function copyableRanges(cm) { var text = [], ranges = [] for (var i = 0; i < cm.doc.sel.ranges.length; i++) { var line = cm.doc.sel.ranges[i].head.line var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)} ranges.push(lineRange) text.push(cm.getRange(lineRange.anchor, lineRange.head)) } return {text: text, ranges: ranges} } function disableBrowserMagic(field, spellcheck) { field.setAttribute("autocorrect", "off") field.setAttribute("autocapitalize", "off") field.setAttribute("spellcheck", !!spellcheck) } function hiddenTextarea() { var te = elt("textarea", null, null, "position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; outline: none") var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;") // The textarea is kept positioned near the cursor to prevent the // fact that it'll be scrolled into view on input from scrolling // our fake cursor out of view. On webkit, when wrap=off, paste is // very slow. So make the area wide instead. if (webkit) { te.style.width = "1000px" } else { te.setAttribute("wrap", "off") } // If border: 0; -- iOS fails to open keyboard (issue #1287) if (ios) { te.style.border = "1px solid black" } disableBrowserMagic(te) return div } // The publicly visible API. Note that methodOp(f) means // 'wrap f in an operation, performed on its `this` parameter'. // This is not the complete set of editor methods. Most of the // methods defined on the Doc type are also injected into // CodeMirror.prototype, for backwards compatibility and // convenience. function addEditorMethods(CodeMirror) { var optionHandlers = CodeMirror.optionHandlers var helpers = CodeMirror.helpers = {} CodeMirror.prototype = { constructor: CodeMirror, focus: function(){window.focus(); this.display.input.focus()}, setOption: function(option, value) { var options = this.options, old = options[option] if (options[option] == value && option != "mode") { return } options[option] = value if (optionHandlers.hasOwnProperty(option)) { operation(this, optionHandlers[option])(this, value, old) } signal(this, "optionChange", this, option) }, getOption: function(option) {return this.options[option]}, getDoc: function() {return this.doc}, addKeyMap: function(map, bottom) { this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map)) }, removeKeyMap: function(map) { var maps = this.state.keyMaps for (var i = 0; i < maps.length; ++i) { if (maps[i] == map \|\| maps[i].name == map) { maps.splice(i, 1) return true } } }, addOverlay: methodOp(function(spec, options) { var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec) if (mode.startState) { throw new Error("Overlays may not be stateful.") } insertSorted(this.state.overlays, {mode: mode, modeSpec: spec, opaque: options && options.opaque, priority: (options && options.priority) \|\| 0}, function (overlay) { return overlay.priority; }) this.state.modeGen++ regChange(this) }), removeOverlay: methodOp(function(spec) { var this$1 = this; var overlays = this.state.overlays for (var i = 0; i < overlays.length; ++i) { var cur = overlays[i].modeSpec if (cur == spec \|\| typeof spec == "string" && cur.name == spec) { overlays.splice(i, 1) this$1.state.modeGen++ regChange(this$1) return } } }), indentLine: methodOp(function(n, dir, aggressive) { if (typeof dir != "string" && typeof dir != "number") { if (dir == null) { dir = this.options.smartIndent ? "smart" : "prev" } else { dir = dir ? "add" : "subtract" } } if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive) } }), indentSelection: methodOp(function(how) { var this$1 = this; var ranges = this.doc.sel.ranges, end = -1 for (var i = 0; i < ranges.length; i++) { var range = ranges[i] if (!range.empty()) { var from = range.from(), to = range.to() var start = Math.max(end, from.line) end = Math.min(this$1.lastLine(), to.line - (to.ch ? 0 : 1)) + 1 for (var j = start; j < end; ++j) { indentLine(this$1, j, how) } var newRanges = this$1.doc.sel.ranges if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0) { replaceOneSelection(this$1.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll) } } else if (range.head.line > end) { indentLine(this$1, range.head.line, how, true) end = range.head.line if (i == this$1.doc.sel.primIndex) { ensureCursorVisible(this$1) } } } }), // Fetch the parser token for a given character. Useful for hacks // that want to inspect the mode state (say, for completion). getTokenAt: function(pos, precise) { return takeToken(this, pos, precise) }, getLineTokens: function(line, precise) { return takeToken(this, Pos(line), precise, true) }, getTokenTypeAt: function(pos) { pos = clipPos(this.doc, pos) var styles = getLineStyles(this, getLine(this.doc, pos.line)) var before = 0, after = (styles.length - 1) / 2, ch = pos.ch var type if (ch == 0) { type = styles[2] } else { for (;;) { var mid = (before + after) >> 1 if ((mid ? styles[mid 2 - 1] : 0) >= ch) { after = mid } else if (styles[mid * 2 + 1] < ch) { before = mid + 1 } else { type = styles[mid * 2 + 2]; break } } } var cut = type ? type.indexOf("overlay ") : -1 return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1) }, getModeAt: function(pos) { var mode = this.doc.mode if (!mode.innerMode) { return mode } return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode }, getHelper: function(pos, type) { return this.getHelpers(pos, type)[0] }, getHelpers: function(pos, type) { var this$1 = this; var found = [] if (!helpers.hasOwnProperty(type)) { return found } var help = helpers[type], mode = this.getModeAt(pos) if (typeof mode[type] == "string") { if (help[mode[type]]) { found.push(help[mode[type]]) } } else if (mode[type]) { for (var i = 0; i < mode[type].length; i++) { var val = help[mode[type][i]] if (val) { found.push(val) } } } else if (mode.helperType && help[mode.helperType]) { found.push(help[mode.helperType]) } else if (help[mode.name]) { found.push(help[mode.name]) } for (var i$1 = 0; i$1 < help._global.length; i$1++) { var cur = help._global[i$1] if (cur.pred(mode, this$1) && indexOf(found, cur.val) == -1) { found.push(cur.val) } } return found }, getStateAfter: function(line, precise) { var doc = this.doc line = clipLine(doc, line == null ? doc.first + doc.size - 1: line) return getStateBefore(this, line + 1, precise) }, cursorCoords: function(start, mode) { var pos, range = this.doc.sel.primary() if (start == null) { pos = range.head } else if (typeof start == "object") { pos = clipPos(this.doc, start) } else { pos = start ? range.from() : range.to() } return cursorCoords(this, pos, mode \|\| "page") }, charCoords: function(pos, mode) { return charCoords(this, clipPos(this.doc, pos), mode \|\| "page") }, coordsChar: function(coords, mode) { coords = fromCoordSystem(this, coords, mode \|\| "page") return coordsChar(this, coords.left, coords.top) }, lineAtHeight: function(height, mode) { height = fromCoordSystem(this, {top: height, left: 0}, mode \|\| "page").top return lineAtHeight(this.doc, height + this.display.viewOffset) }, heightAtLine: function(line, mode, includeWidgets) { var end = false, lineObj if (typeof line == "number") { var last = this.doc.first + this.doc.size - 1 if (line < this.doc.first) { line = this.doc.first } else if (line > last) { line = last; end = true } lineObj = getLine(this.doc, line) } else { lineObj = line } return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode \|\| "page", includeWidgets \|\| end).top + (end ? this.doc.height - heightAtLine(lineObj) : 0) }, defaultTextHeight: function() { return textHeight(this.display) }, defaultCharWidth: function() { return charWidth(this.display) }, getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}}, addWidget: function(pos, node, scroll, vert, horiz) { var display = this.display pos = cursorCoords(this, clipPos(this.doc, pos)) var top = pos.bottom, left = pos.left node.style.position = "absolute" node.setAttribute("cm-ignore-events", "true") this.display.input.setUneditable(node) display.sizer.appendChild(node) if (vert == "over") { top = pos.top } else if (vert == "above" \|\| vert == "near") { var vspace = Math.max(display.wrapper.clientHeight, this.doc.height), hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth) // Default to positioning above (if specified and possible); otherwise default to positioning below if ((vert == 'above' \|\| pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) { top = pos.top - node.offsetHeight } else if (pos.bottom + node.offsetHeight <= vspace) { top = pos.bottom } if (left + node.offsetWidth > hspace) { left = hspace - node.offsetWidth } } node.style.top = top + "px" node.style.left = node.style.right = "" if (horiz == "right") { left = display.sizer.clientWidth - node.offsetWidth node.style.right = "0px" } else { if (horiz == "left") { left = 0 } else if (horiz == "middle") { left = (display.sizer.clientWidth - node.offsetWidth) / 2 } node.style.left = left + "px" } if (scroll) { scrollIntoView(this, {left: left, top: top, right: left + node.offsetWidth, bottom: top + node.offsetHeight}) } }, triggerOnKeyDown: methodOp(onKeyDown), triggerOnKeyPress: methodOp(onKeyPress), triggerOnKeyUp: onKeyUp, execCommand: function(cmd) { if (commands.hasOwnProperty(cmd)) { return commands[cmd].call(null, this) } }, triggerElectric: methodOp(function(text) { triggerElectric(this, text) }), findPosH: function(from, amount, unit, visually) { var this$1 = this; var dir = 1 if (amount < 0) { dir = -1; amount = -amount } var cur = clipPos(this.doc, from) for (var i = 0; i < amount; ++i) { cur = findPosH(this$1.doc, cur, dir, unit, visually) if (cur.hitSide) { break } } return cur }, moveH: methodOp(function(dir, unit) { var this$1 = this; this.extendSelectionsBy(function (range) { if (this$1.display.shift \|\| this$1.doc.extend \|\| range.empty()) { return findPosH(this$1.doc, range.head, dir, unit, this$1.options.rtlMoveVisually) } else { return dir < 0 ? range.from() : range.to() } }, sel_move) }), deleteH: methodOp(function(dir, unit) { var sel = this.doc.sel, doc = this.doc if (sel.somethingSelected()) { doc.replaceSelection("", null, "+delete") } else { deleteNearSelection(this, function (range) { var other = findPosH(doc, range.head, dir, unit, false) return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other} }) } }), findPosV: function(from, amount, unit, goalColumn) { var this$1 = this; var dir = 1, x = goalColumn if (amount < 0) { dir = -1; amount = -amount } var cur = clipPos(this.doc, from) for (var i = 0; i < amount; ++i) { var coords = cursorCoords(this$1, cur, "div") if (x == null) { x = coords.left } else { coords.left = x } cur = findPosV(this$1, coords, dir, unit) if (cur.hitSide) { break } } return cur }, moveV: methodOp(function(dir, unit) { var this$1 = this; var doc = this.doc, goals = [] var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected() doc.extendSelectionsBy(function (range) { if (collapse) { return dir < 0 ? range.from() : range.to() } var headPos = cursorCoords(this$1, range.head, "div") if (range.goalColumn != null) { headPos.left = range.goalColumn } goals.push(headPos.left) var pos = findPosV(this$1, headPos, dir, unit) if (unit == "page" && range == doc.sel.primary()) { addToScrollPos(this$1, null, charCoords(this$1, pos, "div").top - headPos.top) } return pos }, sel_move) if (goals.length) { for (var i = 0; i < doc.sel.ranges.length; i++) { doc.sel.ranges[i].goalColumn = goals[i] } } }), // Find the word at the given position (as returned by coordsChar). findWordAt: function(pos) { var doc = this.doc, line = getLine(doc, pos.line).text var start = pos.ch, end = pos.ch if (line) { var helper = this.getHelper(pos, "wordChars") if ((pos.sticky == "before" \|\| end == line.length) && start) { --start; } else { ++end } var startChar = line.charAt(start) var check = isWordChar(startChar, helper) ? function (ch) { return isWordChar(ch, helper); } : /\s/.test(startChar) ? function (ch) { return /\s/.test(ch); } : function (ch) { return (!/\s/.test(ch) && !isWordChar(ch)); } while (start > 0 && check(line.charAt(start - 1))) { --start } while (end < line.length && check(line.charAt(end))) { ++end } } return new Range(Pos(pos.line, start), Pos(pos.line, end)) }, toggleOverwrite: function(value) { if (value != null && value == this.state.overwrite) { return } if (this.state.overwrite = !this.state.overwrite) { addClass(this.display.cursorDiv, "CodeMirror-overwrite") } else { rmClass(this.display.cursorDiv, "CodeMirror-overwrite") } signal(this, "overwriteToggle", this, this.state.overwrite) }, hasFocus: function() { return this.display.input.getField() == activeElt() }, isReadOnly: function() { return !!(this.options.readOnly \|\| this.doc.cantEdit) }, scrollTo: methodOp(function(x, y) { if (x != null \|\| y != null) { resolveScrollToPos(this) } if (x != null) { this.curOp.scrollLeft = x } if (y != null) { this.curOp.scrollTop = y } }), getScrollInfo: function() { var scroller = this.display.scroller return {left: scroller.scrollLeft, top: scroller.scrollTop, height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight, width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth, clientHeight: displayHeight(this), clientWidth: displayWidth(this)} }, scrollIntoView: methodOp(function(range, margin) { if (range == null) { range = {from: this.doc.sel.primary().head, to: null} if (margin == null) { margin = this.options.cursorScrollMargin } } else if (typeof range == "number") { range = {from: Pos(range, 0), to: null} } else if (range.from == null) { range = {from: range, to: null} } if (!range.to) { range.to = range.from } range.margin = margin \|\| 0 if (range.from.line != null) { resolveScrollToPos(this) this.curOp.scrollToPos = range } else { var sPos = calculateScrollPos(this, { left: Math.min(range.from.left, range.to.left), top: Math.min(range.from.top, range.to.top) - range.margin, right: Math.max(range.from.right, range.to.right), bottom: Math.max(range.from.bottom, range.to.bottom) + range.margin }) this.scrollTo(sPos.scrollLeft, sPos.scrollTop) } }), setSize: methodOp(function(width, height) { var this$1 = this; var interpret = function (val) { return typeof val == "number" \|\| /^\d+$/.test(String(val)) ? val + "px" : val; } if (width != null) { this.display.wrapper.style.width = interpret(width) } if (height != null) { this.display.wrapper.style.height = interpret(height) } if (this.options.lineWrapping) { clearLineMeasurementCache(this) } var lineNo = this.display.viewFrom this.doc.iter(lineNo, this.display.viewTo, function (line) { if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo, "widget"); break } } } ++lineNo }) this.curOp.forceUpdate = true signal(this, "refresh", this) }), operation: function(f){return runInOp(this, f)}, refresh: methodOp(function() { var oldHeight = this.display.cachedTextHeight regChange(this) this.curOp.forceUpdate = true clearCaches(this) this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop) updateGutterSpace(this) if (oldHeight == null \|\| Math.abs(oldHeight - textHeight(this.display)) > .5) { estimateLineHeights(this) } signal(this, "refresh", this) }), swapDoc: methodOp(function(doc) { var old = this.doc old.cm = null attachDoc(this, doc) clearCaches(this) this.display.input.reset() this.scrollTo(doc.scrollLeft, doc.scrollTop) this.curOp.forceScroll = true signalLater(this, "swapDoc", this, old) return old }), getInputField: function(){return this.display.input.getField()}, getWrapperElement: function(){return this.display.wrapper}, getScrollerElement: function(){return this.display.scroller}, getGutterElement: function(){return this.display.gutters} } eventMixin(CodeMirror) CodeMirror.registerHelper = function(type, name, value) { if (!helpers.hasOwnProperty(type)) { helpers[type] = CodeMirror[type] = {_global: []} } helpers[type][name] = value } CodeMirror.registerGlobalHelper = function(type, name, predicate, value) { CodeMirror.registerHelper(type, name, value) helpers[type]._global.push({pred: predicate, val: value}) } } // Used for horizontal relative motion. Dir is -1 or 1 (left or // right), unit can be "char", "column" (like char, but doesn't // cross line boundaries), "word" (across next word), or "group" (to // the start of next group of word or non-word-non-whitespace // chars). The visually param controls whether, in right-to-left // text, direction 1 means to move towards the next index in the // string, or towards the character to the right of the current // position. The resulting position will have a hitSide=true // property if it reached the end of the document. function findPosH(doc, pos, dir, unit, visually) { var oldPos = pos var origDir = dir var lineObj = getLine(doc, pos.line) function findNextLine() { var l = pos.line + dir if (l < doc.first \|\| l >= doc.first + doc.size) { return false } pos = new Pos(l, pos.ch, pos.sticky) return lineObj = getLine(doc, l) } function moveOnce(boundToLine) { var next if (visually) { next = moveVisually(doc.cm, lineObj, pos, dir) } else { next = moveLogically(lineObj, pos, dir) } if (next == null) { if (!boundToLine && findNextLine()) { pos = endOfLine(visually, doc.cm, lineObj, pos.line, dir) } else { return false } } else { pos = next } return true } if (unit == "char") { moveOnce() } else if (unit == "column") { moveOnce(true) } else if (unit == "word" \|\| unit == "group") { var sawType = null, group = unit == "group" var helper = doc.cm && doc.cm.getHelper(pos, "wordChars") for (var first = true;; first = false) { if (dir < 0 && !moveOnce(!first)) { break } var cur = lineObj.text.charAt(pos.ch) \|\| "\n" var type = isWordChar(cur, helper) ? "w" : group && cur == "\n" ? "n" : !group \|\| /\s/.test(cur) ? null : "p" if (group && !first && !type) { type = "s" } if (sawType && sawType != type) { if (dir < 0) {dir = 1; moveOnce(); pos.sticky = "after"} break } if (type) { sawType = type } if (dir > 0 && !moveOnce(!first)) { break } } } var result = skipAtomic(doc, pos, oldPos, origDir, true) if (equalCursorPos(oldPos, result)) { result.hitSide = true } return result } // For relative vertical movement. Dir may be -1 or 1. Unit can be // "page" or "line". The resulting position will have a hitSide=true // property if it reached the end of the document. function findPosV(cm, pos, dir, unit) { var doc = cm.doc, x = pos.left, y if (unit == "page") { var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight \|\| document.documentElement.clientHeight) var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3) y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount } else if (unit == "line") { y = dir > 0 ? pos.bottom + 3 : pos.top - 3 } var target for (;;) { target = coordsChar(cm, x, y) if (!target.outside) { break } if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break } y += dir * 5 } return target } // CONTENTEDITABLE INPUT STYLE var ContentEditableInput = function(cm) { this.cm = cm this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null this.polling = new Delayed() this.composing = null this.gracePeriod = false this.readDOMTimeout = null }; ContentEditableInput.prototype.init = function (display) { var this$1 = this; var input = this, cm = input.cm var div = input.div = display.lineDiv disableBrowserMagic(div, cm.options.spellcheck) on(div, "paste", function (e) { if (signalDOMEvent(cm, e) \|\| handlePaste(e, cm)) { return } // IE doesn't fire input events, so we schedule a read for the pasted content in this way if (ie_version <= 11) { setTimeout(operation(cm, function () { return this$1.updateFromDOM(); }), 20) } }) on(div, "compositionstart", function (e) { this$1.composing = {data: e.data, done: false} }) on(div, "compositionupdate", function (e) { if (!this$1.composing) { this$1.composing = {data: e.data, done: false} } }) on(div, "compositionend", function (e) { if (this$1.composing) { if (e.data != this$1.composing.data) { this$1.readFromDOMSoon() } this$1.composing.done = true } }) on(div, "touchstart", function () { return input.forceCompositionEnd(); }) on(div, "input", function () { if (!this$1.composing) { this$1.readFromDOMSoon() } }) function onCopyCut(e) { if (signalDOMEvent(cm, e)) { return } if (cm.somethingSelected()) { setLastCopied({lineWise: false, text: cm.getSelections()}) if (e.type == "cut") { cm.replaceSelection("", null, "cut") } } else if (!cm.options.lineWiseCopyCut) { return } else { var ranges = copyableRanges(cm) setLastCopied({lineWise: true, text: ranges.text}) if (e.type == "cut") { cm.operation(function () { cm.setSelections(ranges.ranges, 0, sel_dontScroll) cm.replaceSelection("", null, "cut") }) } } if (e.clipboardData) { e.clipboardData.clearData() var content = lastCopied.text.join("\n") // iOS exposes the clipboard API, but seems to discard content inserted into it e.clipboardData.setData("Text", content) if (e.clipboardData.getData("Text") == content) { e.preventDefault() return } } // Old-fashioned briefly-focus-a-textarea hack var kludge = hiddenTextarea(), te = kludge.firstChild cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild) te.value = lastCopied.text.join("\n") var hadFocus = document.activeElement selectInput(te) setTimeout(function () { cm.display.lineSpace.removeChild(kludge) hadFocus.focus() if (hadFocus == div) { input.showPrimarySelection() } }, 50) } on(div, "copy", onCopyCut) on(div, "cut", onCopyCut) }; ContentEditableInput.prototype.prepareSelection = function () { var result = prepareSelection(this.cm, false) result.focus = this.cm.state.focused return result }; ContentEditableInput.prototype.showSelection = function (info, takeFocus) { if (!info \|\| !this.cm.display.view.length) { return } if (info.focus \|\| takeFocus) { this.showPrimarySelection() } this.showMultipleSelections(info) }; ContentEditableInput.prototype.showPrimarySelection = function () { var sel = window.getSelection(), prim = this.cm.doc.sel.primary() var curAnchor = domToPos(this.cm, sel.anchorNode, sel.anchorOffset) var curFocus = domToPos(this.cm, sel.focusNode, sel.focusOffset) if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad && cmp(minPos(curAnchor, curFocus), prim.from()) == 0 && cmp(maxPos(curAnchor, curFocus), prim.to()) == 0) { return } var start = posToDOM(this.cm, prim.from()) var end = posToDOM(this.cm, prim.to()) if (!start && !end) { sel.removeAllRanges() return } var view = this.cm.display.view var old = sel.rangeCount && sel.getRangeAt(0) if (!start) { start = {node: view[0].measure.map[2], offset: 0} } else if (!end) { // FIXME dangerously hacky var measure = view[view.length - 1].measure var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]} } var rng try { rng = range(start.node, start.offset, end.offset, end.node) } catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible if (rng) { if (!gecko && this.cm.state.focused) { sel.collapse(start.node, start.offset) if (!rng.collapsed) { sel.removeAllRanges() sel.addRange(rng) } } else { sel.removeAllRanges() sel.addRange(rng) } if (old && sel.anchorNode == null) { sel.addRange(old) } else if (gecko) { this.startGracePeriod() } } this.rememberSelection() }; ContentEditableInput.prototype.startGracePeriod = function () { var this$1 = this; clearTimeout(this.gracePeriod) this.gracePeriod = setTimeout(function () { this$1.gracePeriod = false if (this$1.selectionChanged()) { this$1.cm.operation(function () { return this$1.cm.curOp.selectionChanged = true; }) } }, 20) }; ContentEditableInput.prototype.showMultipleSelections = function (info) { removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors) removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection) }; ContentEditableInput.prototype.rememberSelection = function () { var sel = window.getSelection() this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset }; ContentEditableInput.prototype.selectionInEditor = function () { var sel = window.getSelection() if (!sel.rangeCount) { return false } var node = sel.getRangeAt(0).commonAncestorContainer return contains(this.div, node) }; ContentEditableInput.prototype.focus = function () { if (this.cm.options.readOnly != "nocursor") { if (!this.selectionInEditor()) { this.showSelection(this.prepareSelection(), true) } this.div.focus() } }; ContentEditableInput.prototype.blur = function () { this.div.blur() }; ContentEditableInput.prototype.getField = function () { return this.div }; ContentEditableInput.prototype.supportsTouch = function () { return true }; ContentEditableInput.prototype.receivedFocus = function () { var input = this if (this.selectionInEditor()) { this.pollSelection() } else { runInOp(this.cm, function () { return input.cm.curOp.selectionChanged = true; }) } function poll() { if (input.cm.state.focused) { input.pollSelection() input.polling.set(input.cm.options.pollInterval, poll) } } this.polling.set(this.cm.options.pollInterval, poll) }; ContentEditableInput.prototype.selectionChanged = function () { var sel = window.getSelection() return sel.anchorNode != this.lastAnchorNode \|\| sel.anchorOffset != this.lastAnchorOffset \|\| sel.focusNode != this.lastFocusNode \|\| sel.focusOffset != this.lastFocusOffset }; ContentEditableInput.prototype.pollSelection = function () { if (this.readDOMTimeout != null \|\| this.gracePeriod \|\| !this.selectionChanged()) { return } var sel = window.getSelection(), cm = this.cm // On Android Chrome (version 56, at least), backspacing into an // uneditable block element will put the cursor in that element, // and then, because it's not editable, hide the virtual keyboard. // Because Android doesn't allow us to actually detect backspace // presses in a sane way, this code checks for when that happens // and simulates a backspace press in this case. if (android && chrome && this.cm.options.gutters.length && isInGutter(sel.anchorNode)) { this.cm.triggerOnKeyDown({type: "keydown", keyCode: 8, preventDefault: Math.abs}) this.blur() this.focus() return } if (this.composing) { return } this.rememberSelection() var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset) var head = domToPos(cm, sel.focusNode, sel.focusOffset) if (anchor && head) { runInOp(cm, function () { setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll) if (anchor.bad \|\| head.bad) { cm.curOp.selectionChanged = true } }) } }; ContentEditableInput.prototype.pollContent = function () { if (this.readDOMTimeout != null) { clearTimeout(this.readDOMTimeout) this.readDOMTimeout = null } var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary() var from = sel.from(), to = sel.to() if (from.ch == 0 && from.line > cm.firstLine()) { from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length) } if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine()) { to = Pos(to.line + 1, 0) } if (from.line < display.viewFrom \|\| to.line > display.viewTo - 1) { return false } var fromIndex, fromLine, fromNode if (from.line == display.viewFrom \|\| (fromIndex = findViewIndex(cm, from.line)) == 0) { fromLine = lineNo(display.view[0].line) fromNode = display.view[0].node } else { fromLine = lineNo(display.view[fromIndex].line) fromNode = display.view[fromIndex - 1].node.nextSibling } var toIndex = findViewIndex(cm, to.line) var toLine, toNode if (toIndex == display.view.length - 1) { toLine = display.viewTo - 1 toNode = display.lineDiv.lastChild } else { toLine = lineNo(display.view[toIndex + 1].line) - 1 toNode = display.view[toIndex + 1].node.previousSibling } if (!fromNode) { return false } var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine)) var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length)) while (newText.length > 1 && oldText.length > 1) { if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine-- } else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++ } else { break } } var cutFront = 0, cutEnd = 0 var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length) while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront)) { ++cutFront } var newBot = lst(newText), oldBot = lst(oldText) var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0), oldBot.length - (oldText.length == 1 ? cutFront : 0)) while (cutEnd < maxCutEnd && newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) { ++cutEnd } // Try to move start of change to start of selection if ambiguous if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) { while (cutFront && cutFront > from.ch && newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) { cutFront-- cutEnd++ } } newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\u200b+/, "") newText[0] = newText[0].slice(cutFront).replace(/\u200b+$/, "") var chFrom = Pos(fromLine, cutFront) var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0) if (newText.length > 1 \|\| newText[0] \|\| cmp(chFrom, chTo)) { replaceRange(cm.doc, newText, chFrom, chTo, "+input") return true } }; ContentEditableInput.prototype.ensurePolled = function () { this.forceCompositionEnd() }; ContentEditableInput.prototype.reset = function () { this.forceCompositionEnd() }; ContentEditableInput.prototype.forceCompositionEnd = function () { if (!this.composing) { return } clearTimeout(this.readDOMTimeout) this.composing = null this.updateFromDOM() this.div.blur() this.div.focus() }; ContentEditableInput.prototype.readFromDOMSoon = function () { var this$1 = this; if (this.readDOMTimeout != null) { return } this.readDOMTimeout = setTimeout(function () { this$1.readDOMTimeout = null if (this$1.composing) { if (this$1.composing.done) { this$1.composing = null } else { return } } this$1.updateFromDOM() }, 80) }; ContentEditableInput.prototype.updateFromDOM = function () { var this$1 = this; if (this.cm.isReadOnly() \|\| !this.pollContent()) { runInOp(this.cm, function () { return regChange(this$1.cm); }) } }; ContentEditableInput.prototype.setUneditable = function (node) { node.contentEditable = "false" }; ContentEditableInput.prototype.onKeyPress = function (e) { if (e.charCode == 0) { return } e.preventDefault() if (!this.cm.isReadOnly()) { operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0) } }; ContentEditableInput.prototype.readOnlyChanged = function (val) { this.div.contentEditable = String(val != "nocursor") }; ContentEditableInput.prototype.onContextMenu = function () {}; ContentEditableInput.prototype.resetPosition = function () {}; ContentEditableInput.prototype.needsContentAttribute = true function posToDOM(cm, pos) { var view = findViewForLine(cm, pos.line) if (!view \|\| view.hidden) { return null } var line = getLine(cm.doc, pos.line) var info = mapFromLineView(view, line, pos.line) var order = getOrder(line, cm.doc.direction), side = "left" if (order) { var partPos = getBidiPartAt(order, pos.ch) side = partPos % 2 ? "right" : "left" } var result = nodeAndOffsetInLineMap(info.map, pos.ch, side) result.offset = result.collapse == "right" ? result.end : result.start return result } function isInGutter(node) { for (var scan = node; scan; scan = scan.parentNode) { if (/CodeMirror-gutter-wrapper/.test(scan.className)) { return true } } return false } function badPos(pos, bad) { if (bad) { pos.bad = true; } return pos } function domTextBetween(cm, from, to, fromLine, toLine) { var text = "", closing = false, lineSep = cm.doc.lineSeparator() function recognizeMarker(id) { return function (marker) { return marker.id == id; } } function close() { if (closing) { text += lineSep closing = false } } function addText(str) { if (str) { close() text += str } } function walk(node) { if (node.nodeType == 1) { var cmText = node.getAttribute("cm-text") if (cmText != null) { addText(cmText \|\| node.textContent.replace(/\u200b/g, "")) return } var markerID = node.getAttribute("cm-marker"), range if (markerID) { var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID)) if (found.length && (range = found[0].find())) { addText(getBetween(cm.doc, range.from, range.to).join(lineSep)) } return } if (node.getAttribute("contenteditable") == "false") { return } var isBlock = /^(pre\|div\|p)$/i.test(node.nodeName) if (isBlock) { close() } for (var i = 0; i < node.childNodes.length; i++) { walk(node.childNodes[i]) } if (isBlock) { closing = true } } else if (node.nodeType == 3) { addText(node.nodeValue) } } for (;;) { walk(from) if (from == to) { break } from = from.nextSibling } return text } function domToPos(cm, node, offset) { var lineNode if (node == cm.display.lineDiv) { lineNode = cm.display.lineDiv.childNodes[offset] if (!lineNode) { return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true) } node = null; offset = 0 } else { for (lineNode = node;; lineNode = lineNode.parentNode) { if (!lineNode \|\| lineNode == cm.display.lineDiv) { return null } if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) { break } } } for (var i = 0; i < cm.display.view.length; i++) { var lineView = cm.display.view[i] if (lineView.node == lineNode) { return locateNodeInLineView(lineView, node, offset) } } } function locateNodeInLineView(lineView, node, offset) { var wrapper = lineView.text.firstChild, bad = false if (!node \|\| !contains(wrapper, node)) { return badPos(Pos(lineNo(lineView.line), 0), true) } if (node == wrapper) { bad = true node = wrapper.childNodes[offset] offset = 0 if (!node) { var line = lineView.rest ? lst(lineView.rest) : lineView.line return badPos(Pos(lineNo(line), line.text.length), bad) } } var textNode = node.nodeType == 3 ? node : null, topNode = node if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) { textNode = node.firstChild if (offset) { offset = textNode.nodeValue.length } } while (topNode.parentNode != wrapper) { topNode = topNode.parentNode } var measure = lineView.measure, maps = measure.maps function find(textNode, topNode, offset) { for (var i = -1; i < (maps ? maps.length : 0); i++) { var map = i < 0 ? measure.map : maps[i] for (var j = 0; j < map.length; j += 3) { var curNode = map[j + 2] if (curNode == textNode \|\| curNode == topNode) { var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]) var ch = map[j] + offset if (offset < 0 \|\| curNode != textNode) { ch = map[j + (offset ? 1 : 0)] } return Pos(line, ch) } } } } var found = find(textNode, topNode, offset) if (found) { return badPos(found, bad) } // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) { found = find(after, after.firstChild, 0) if (found) { return badPos(Pos(found.line, found.ch - dist), bad) } else { dist += after.textContent.length } } for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) { found = find(before, before.firstChild, -1) if (found) { return badPos(Pos(found.line, found.ch + dist$1), bad) } else { dist$1 += before.textContent.length } } } // TEXTAREA INPUT STYLE var TextareaInput = function(cm) { this.cm = cm // See input.poll and input.reset this.prevInput = "" // Flag that indicates whether we expect input to appear real soon // now (after some event like 'keypress' or 'input') and are // polling intensively. this.pollingFast = false // Self-resetting timeout for the poller this.polling = new Delayed() // Tracks when input.reset has punted to just putting a short // string into the textarea instead of the full selection. this.inaccurateSelection = false // Used to work around IE issue with selection being forgotten when focus moves away from textarea this.hasSelection = false this.composing = null }; TextareaInput.prototype.init = function (display) { var this$1 = this; var input = this, cm = this.cm // Wraps and hides input textarea var div = this.wrapper = hiddenTextarea() // The semihidden textarea that is focused when the editor is // focused, and receives input. var te = this.textarea = div.firstChild display.wrapper.insertBefore(div, display.wrapper.firstChild) // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore) if (ios) { te.style.width = "0px" } on(te, "input", function () { if (ie && ie_version >= 9 && this$1.hasSelection) { this$1.hasSelection = null } input.poll() }) on(te, "paste", function (e) { if (signalDOMEvent(cm, e) \|\| handlePaste(e, cm)) { return } cm.state.pasteIncoming = true input.fastPoll() }) function prepareCopyCut(e) { if (signalDOMEvent(cm, e)) { return } if (cm.somethingSelected()) { setLastCopied({lineWise: false, text: cm.getSelections()}) if (input.inaccurateSelection) { input.prevInput = "" input.inaccurateSelection = false te.value = lastCopied.text.join("\n") selectInput(te) } } else if (!cm.options.lineWiseCopyCut) { return } else { var ranges = copyableRanges(cm) setLastCopied({lineWise: true, text: ranges.text}) if (e.type == "cut") { cm.setSelections(ranges.ranges, null, sel_dontScroll) } else { input.prevInput = "" te.value = ranges.text.join("\n") selectInput(te) } } if (e.type == "cut") { cm.state.cutIncoming = true } } on(te, "cut", prepareCopyCut) on(te, "copy", prepareCopyCut) on(display.scroller, "paste", function (e) { if (eventInWidget(display, e) \|\| signalDOMEvent(cm, e)) { return } cm.state.pasteIncoming = true input.focus() }) // Prevent normal selection in the editor (we handle our own) on(display.lineSpace, "selectstart", function (e) { if (!eventInWidget(display, e)) { e_preventDefault(e) } }) on(te, "compositionstart", function () { var start = cm.getCursor("from") if (input.composing) { input.composing.range.clear() } input.composing = { start: start, range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"}) } }) on(te, "compositionend", function () { if (input.composing) { input.poll() input.composing.range.clear() input.composing = null } }) }; TextareaInput.prototype.prepareSelection = function () { // Redraw the selection and/or cursor var cm = this.cm, display = cm.display, doc = cm.doc var result = prepareSelection(cm) // Move the hidden textarea near the cursor to prevent scrolling artifacts if (cm.options.moveInputWithCursor) { var headPos = cursorCoords(cm, doc.sel.primary().head, "div") var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect() result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10, headPos.top + lineOff.top - wrapOff.top)) result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10, headPos.left + lineOff.left - wrapOff.left)) } return result }; TextareaInput.prototype.showSelection = function (drawn) { var cm = this.cm, display = cm.display removeChildrenAndAdd(display.cursorDiv, drawn.cursors) removeChildrenAndAdd(display.selectionDiv, drawn.selection) if (drawn.teTop != null) { this.wrapper.style.top = drawn.teTop + "px" this.wrapper.style.left = drawn.teLeft + "px" } }; // Reset the input to correspond to the selection (or to be empty, // when not typing and nothing is selected) TextareaInput.prototype.reset = function (typing) { if (this.contextMenuPending) { return } var minimal, selected, cm = this.cm, doc = cm.doc if (cm.somethingSelected()) { this.prevInput = "" var range = doc.sel.primary() minimal = hasCopyEvent && (range.to().line - range.from().line > 100 \|\| (selected = cm.getSelection()).length > 1000) var content = minimal ? "-" : selected \|\| cm.getSelection() this.textarea.value = content if (cm.state.focused) { selectInput(this.textarea) } if (ie && ie_version >= 9) { this.hasSelection = content } } else if (!typing) { this.prevInput = this.textarea.value = "" if (ie && ie_version >= 9) { this.hasSelection = null } } this.inaccurateSelection = minimal }; TextareaInput.prototype.getField = function () { return this.textarea }; TextareaInput.prototype.supportsTouch = function () { return false }; TextareaInput.prototype.focus = function () { if (this.cm.options.readOnly != "nocursor" && (!mobile \|\| activeElt() != this.textarea)) { try { this.textarea.focus() } catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM } }; TextareaInput.prototype.blur = function () { this.textarea.blur() }; TextareaInput.prototype.resetPosition = function () { this.wrapper.style.top = this.wrapper.style.left = 0 }; TextareaInput.prototype.receivedFocus = function () { this.slowPoll() }; // Poll for input changes, using the normal rate of polling. This // runs as long as the editor is focused. TextareaInput.prototype.slowPoll = function () { var this$1 = this; if (this.pollingFast) { return } this.polling.set(this.cm.options.pollInterval, function () { this$1.poll() if (this$1.cm.state.focused) { this$1.slowPoll() } }) }; // When an event has just come in that is likely to add or change // something in the input textarea, we poll faster, to ensure that // the change appears on the screen quickly. TextareaInput.prototype.fastPoll = function () { var missed = false, input = this input.pollingFast = true function p() { var changed = input.poll() if (!changed && !missed) {missed = true; input.polling.set(60, p)} else {input.pollingFast = false; input.slowPoll()} } input.polling.set(20, p) }; // Read input from the textarea, and update the document to match. // When something is selected, it is present in the textarea, and // selected (unless it is huge, in which case a placeholder is // used). When nothing is selected, the cursor sits after previously // seen text (can be empty), which is stored in prevInput (we must // not reset the textarea when typing, because that breaks IME). TextareaInput.prototype.poll = function () { var this$1 = this; var cm = this.cm, input = this.textarea, prevInput = this.prevInput // Since this is called a lot, try to bail out as cheaply as // possible when it is clear that nothing happened. hasSelection // will be the case when there is a lot of text in the textarea, // in which case reading its value would be expensive. if (this.contextMenuPending \|\| !cm.state.focused \|\| (hasSelection(input) && !prevInput && !this.composing) \|\| cm.isReadOnly() \|\| cm.options.disableInput \|\| cm.state.keySeq) { return false } var text = input.value // If nothing changed, bail. if (text == prevInput && !cm.somethingSelected()) { return false } // Work around nonsensical selection resetting in IE9/10, and // inexplicable appearance of private area unicode characters on // some key combos in Mac (#2689). if (ie && ie_version >= 9 && this.hasSelection === text \|\| mac && /[\uf700-\uf7ff]/.test(text)) { cm.display.input.reset() return false } if (cm.doc.sel == cm.display.selForContextMenu) { var first = text.charCodeAt(0) if (first == 0x200b && !prevInput) { prevInput = "\u200b" } if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo") } } // Find the part of the input that is actually new var same = 0, l = Math.min(prevInput.length, text.length) while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) { ++same } runInOp(cm, function () { applyTextInput(cm, text.slice(same), prevInput.length - same, null, this$1.composing ? "compose" : null) // Don't leave long text in the textarea, since it makes further polling slow if (text.length > 1000 \|\| text.indexOf("\n") > -1) { input.value = this$1.prevInput = "" } else { this$1.prevInput = text } if (this$1.composing) { this$1.composing.range.clear() this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor("to"), {className: "CodeMirror-composing"}) } }) return true }; TextareaInput.prototype.ensurePolled = function () { if (this.pollingFast && this.poll()) { this.pollingFast = false } }; TextareaInput.prototype.onKeyPress = function () { if (ie && ie_version >= 9) { this.hasSelection = null } this.fastPoll() }; TextareaInput.prototype.onContextMenu = function (e) { var input = this, cm = input.cm, display = cm.display, te = input.textarea var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop if (!pos \|\| presto) { return } // Opera is difficult. // Reset the current text selection only if the click is done outside of the selection // and 'resetSelectionOnContextMenu' option is true. var reset = cm.options.resetSelectionOnContextMenu if (reset && cm.doc.sel.contains(pos) == -1) { operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll) } var oldCSS = te.style.cssText, oldWrapperCSS = input.wrapper.style.cssText input.wrapper.style.cssText = "position: absolute" var wrapperBox = input.wrapper.getBoundingClientRect() 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);" var oldScrollY if (webkit) { oldScrollY = window.scrollY } // Work around Chrome issue (#2712) display.input.focus() if (webkit) { window.scrollTo(null, oldScrollY) } display.input.reset() // Adds "Select all" to context menu in FF if (!cm.somethingSelected()) { te.value = input.prevInput = " " } input.contextMenuPending = true display.selForContextMenu = cm.doc.sel clearTimeout(display.detectingSelectAll) // Select-all will be greyed out if there's nothing to select, so // this adds a zero-width space so that we can later check whether // it got selected. function prepareSelectAllHack() { if (te.selectionStart != null) { var selected = cm.somethingSelected() var extval = "\u200b" + (selected ? te.value : "") te.value = "\u21da" // Used to catch context-menu undo te.value = extval input.prevInput = selected ? "" : "\u200b" te.selectionStart = 1; te.selectionEnd = extval.length // Re-set this, in case some other handler touched the // selection in the meantime. display.selForContextMenu = cm.doc.sel } } function rehide() { input.contextMenuPending = false input.wrapper.style.cssText = oldWrapperCSS te.style.cssText = oldCSS if (ie && ie_version < 9) { display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos) } // Try to detect the user choosing select-all if (te.selectionStart != null) { if (!ie \|\| (ie && ie_version < 9)) { prepareSelectAllHack() } var i = 0, poll = function () { if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 && te.selectionEnd > 0 && input.prevInput == "\u200b") { operation(cm, selectAll)(cm) } else if (i++ < 10) { display.detectingSelectAll = setTimeout(poll, 500) } else { display.selForContextMenu = null display.input.reset() } } display.detectingSelectAll = setTimeout(poll, 200) } } if (ie && ie_version >= 9) { prepareSelectAllHack() } if (captureRightClick) { e_stop(e) var mouseup = function () { off(window, "mouseup", mouseup) setTimeout(rehide, 20) } on(window, "mouseup", mouseup) } else { setTimeout(rehide, 50) } }; TextareaInput.prototype.readOnlyChanged = function (val) { if (!val) { this.reset() } }; TextareaInput.prototype.setUneditable = function () {}; TextareaInput.prototype.needsContentAttribute = false function fromTextArea(textarea, options) { options = options ? copyObj(options) : {} options.value = textarea.value if (!options.tabindex && textarea.tabIndex) { options.tabindex = textarea.tabIndex } if (!options.placeholder && textarea.placeholder) { options.placeholder = textarea.placeholder } // Set autofocus to true if this textarea is focused, or if it has // autofocus and no other element is focused. if (options.autofocus == null) { var hasFocus = activeElt() options.autofocus = hasFocus == textarea \|\| textarea.getAttribute("autofocus") != null && hasFocus == document.body } function save() {textarea.value = cm.getValue()} var realSubmit if (textarea.form) { on(textarea.form, "submit", save) // Deplorable hack to make the submit method do the right thing. if (!options.leaveSubmitMethodAlone) { var form = textarea.form realSubmit = form.submit try { var wrappedSubmit = form.submit = function () { save() form.submit = realSubmit form.submit() form.submit = wrappedSubmit } } catch(e) {} } } options.finishInit = function (cm) { cm.save = save cm.getTextArea = function () { return textarea; } cm.toTextArea = function () { cm.toTextArea = isNaN // Prevent this from being ran twice save() textarea.parentNode.removeChild(cm.getWrapperElement()) textarea.style.display = "" if (textarea.form) { off(textarea.form, "submit", save) if (typeof textarea.form.submit == "function") { textarea.form.submit = realSubmit } } } } textarea.style.display = "none" var cm = CodeMirror(function (node) { return textarea.parentNode.insertBefore(node, textarea.nextSibling); }, options) return cm } function addLegacyProps(CodeMirror) { CodeMirror.off = off CodeMirror.on = on CodeMirror.wheelEventPixels = wheelEventPixels CodeMirror.Doc = Doc CodeMirror.splitLines = splitLinesAuto CodeMirror.countColumn = countColumn CodeMirror.findColumn = findColumn CodeMirror.isWordChar = isWordCharBasic CodeMirror.Pass = Pass CodeMirror.signal = signal CodeMirror.Line = Line CodeMirror.changeEnd = changeEnd CodeMirror.scrollbarModel = scrollbarModel CodeMirror.Pos = Pos CodeMirror.cmpPos = cmp CodeMirror.modes = modes CodeMirror.mimeModes = mimeModes CodeMirror.resolveMode = resolveMode CodeMirror.getMode = getMode CodeMirror.modeExtensions = modeExtensions CodeMirror.extendMode = extendMode CodeMirror.copyState = copyState CodeMirror.startState = startState CodeMirror.innerMode = innerMode CodeMirror.commands = commands CodeMirror.keyMap = keyMap CodeMirror.keyName = keyName CodeMirror.isModifierKey = isModifierKey CodeMirror.lookupKey = lookupKey CodeMirror.normalizeKeyMap = normalizeKeyMap CodeMirror.StringStream = StringStream CodeMirror.SharedTextMarker = SharedTextMarker CodeMirror.TextMarker = TextMarker CodeMirror.LineWidget = LineWidget CodeMirror.e_preventDefault = e_preventDefault CodeMirror.e_stopPropagation = e_stopPropagation CodeMirror.e_stop = e_stop CodeMirror.addClass = addClass CodeMirror.contains = contains CodeMirror.rmClass = rmClass CodeMirror.keyNames = keyNames } // EDITOR CONSTRUCTOR defineOptions(CodeMirror) addEditorMethods(CodeMirror) // Set up methods on CodeMirror's prototype to redirect to the editor's document. var dontDelegate = "iter insert remove copy getEditor constructor".split(" ") for (var prop in Doc.prototype) { if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) { CodeMirror.prototype[prop] = (function(method) { return function() {return method.apply(this.doc, arguments)} })(Doc.prototype[prop]) } } eventMixin(Doc) // INPUT HANDLING CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput} // MODE DEFINITION AND QUERYING // Extra arguments are stored as the mode's dependencies, which is // used by (legacy) mechanisms like loadmode.js to automatically // load a mode. (Preferred mechanism is the require/define calls.) CodeMirror.defineMode = function(name/, mode, …*/) { if (!CodeMirror.defaults.mode && name != "null") { CodeMirror.defaults.mode = name } defineMode.apply(this, arguments) } CodeMirror.defineMIME = defineMIME // Minimal default mode. CodeMirror.defineMode("null", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); }) CodeMirror.defineMIME("text/plain", "null") // EXTENSIONS CodeMirror.defineExtension = function (name, func) { CodeMirror.prototype[name] = func } CodeMirror.defineDocExtension = function (name, func) { Doc.prototype[name] = func } CodeMirror.fromTextArea = fromTextArea addLegacyProps(CodeMirror) CodeMirror.version = "5.25.0" return CodeMirror; })));