Mobile Basic

the CSS class "CodeMirror-activeline", +// and gives its background

the class "CodeMirror-activeline-background". + +(function() { + "use strict"; + var WRAP_CLASS = "CodeMirror-activeline"; + var BACK_CLASS = "CodeMirror-activeline-background"; + + CodeMirror.defineOption("styleActiveLine", false, function(cm, val, old) { + var prev = old && old != CodeMirror.Init; + if (val && !prev) { + updateActiveLine(cm); + cm.on("cursorActivity", updateActiveLine); + } else if (!val && prev) { + cm.off("cursorActivity", updateActiveLine); + clearActiveLine(cm); + delete cm.state.activeLine; + } + }); + + function clearActiveLine(cm) { + if ("activeLine" in cm.state) { + cm.removeLineClass(cm.state.activeLine, "wrap", WRAP_CLASS); + cm.removeLineClass(cm.state.activeLine, "background", BACK_CLASS); + } + } + + function updateActiveLine(cm) { + var line = cm.getLineHandle(cm.getCursor().line); + if (cm.state.activeLine == line) + return; + clearActiveLine(cm); + cm.addLineClass(line, "wrap", WRAP_CLASS); + cm.addLineClass(line, "background", BACK_CLASS); + cm.state.activeLine = line; + } +})(); diff --git a/res/codemirror/basic.js b/res/codemirror/basic.js new file mode 100644 index 0000000..beb9122 --- /dev/null +++ b/res/codemirror/basic.js @@ -0,0 +1,266 @@ +CodeMirror.defineMode("basic", function(conf, parserConf) { + var ERRORCLASS = 'error'; + + function wordRegexp(words) { + return new RegExp("^((" + words.join(")|(") + "))\\b", "i"); + } + + var singleOperators = new RegExp("^[\\+\\-\\*/%&\\\\|\\^~<>!]"); + var singleDelimiters = new RegExp('^[\$\$\\[\\]\\{\\}@,:`=;\\.]'); + var doubleOperators = new RegExp("^((==)|(<>)|(<=)|(>=)|(<>)|(<<)|(>>)|(//)|(\\*\\*))"); + var doubleDelimiters = new RegExp("^((\\+=)|(\\-=)|(\\*=)|(%=)|(/=)|(&=)|(\\|=)|(\\^=))"); + var tripleDelimiters = new RegExp("^((//=)|(>>=)|(<<=)|(\\*\\*=))"); + var identifiers = new RegExp("^[_A-Za-z][_A-Za-z0-9]*"); + + var openingKeywords = ['if']; + var middleKeywords = ['then', 'else']; + var endKeywords = ['next', 'loop']; + + var wordOperators = wordRegexp(['in']); + var commonkeywords = ['stop', 'pop', 'return', 'repaint', 'sendsms','rand', 'alphagel', 'COLORALPHAGEL', 'end', 'new', 'run', 'dir', 'deg', 'rad', 'bye', 'goto', 'gosub', 'sleep', 'print', 'rem', 'dim', 'if', 'then', 'cls', 'plot', 'drawline', 'fillrect', 'drawrect', 'fillroundrect', 'drawroundrect', 'fillarc', 'drawarc', 'drawstring', 'setcolor', 'blit', 'for', 'to', 'step', 'next', 'input', 'list', 'enter', 'load', 'save', 'delete', 'edit', 'trap', 'open', 'close', 'note', 'point', 'put', 'get', 'data', 'restore', 'read', 'bitand', 'bitor', 'bitxor', 'not', 'and', 'or', 'screenwidth', 'screenheight', 'iscolor', 'numcolors', 'stringwidth', 'stringheight', 'left', 'mid', 'right', 'chr', 'str', 'len', 'asc', 'val', 'up', 'down', 'left', 'right', 'fire', 'gamea', 'gameb', 'gamec', 'gamed', 'days', 'milliseconds', 'year', 'month', 'day', 'hour', 'minute', 'second', 'millisecond', 'rnd', 'err', 'fre', 'mod', 'editform', 'gaugeform', 'choiceform', 'dateform', 'messageform', 'log', 'exp', 'sqr', 'sin', 'cos', 'tan', 'asin', 'acos', 'atan', 'abs', 'print', 'input', ':', 'gelgrab', 'drawgel', 'spritegel', 'spritemove', 'spritehit', 'readdir', 'property', 'gelload', 'gelwidth', 'gelheight', 'playwav', 'playtone', 'inkey', 'select', 'alert', 'setfont', 'menuadd', 'menuitem', 'menuremove', 'call', 'endsub']; + var commontypes = ['integer', 'string', 'double', 'decimal', 'boolean', 'short', 'char', 'float', 'single']; + + var keywords = wordRegexp(commonkeywords); + var types = wordRegexp(commontypes); + var stringPrefixes = '"'; + + var opening = wordRegexp(openingKeywords); + var middle = wordRegexp(middleKeywords); + var closing = wordRegexp(endKeywords); + var doubleClosing = wordRegexp(['end']); + var doOpening = wordRegexp(['do']); + + var indentInfo = null; + + + + + function indent(_stream, state) { + state.currentIndent++; + } + + function dedent(_stream, state) { + state.currentIndent--; + } + // tokenizers + function tokenBase(stream, state) { + if (stream.eatSpace()) { + return null; + } + + var ch = stream.peek(); + + // Handle Comments + if (ch === "'") { + stream.skipToEnd(); + return 'comment'; + } + + + // Handle Number Literals + if (stream.match(/^((&H)|(&O))?[0-9\.a-f]/i, false)) { + var floatLiteral = false; + // Floats + if (stream.match(/^\d*\.\d+F?/i)) { + floatLiteral = true; + } + else if (stream.match(/^\d+\.\d*F?/)) { + floatLiteral = true; + } + else if (stream.match(/^\.\d+F?/)) { + floatLiteral = true; + } + + if (floatLiteral) { + // Float literals may be "imaginary" + stream.eat(/J/i); + return 'number'; + } + // Integers + var intLiteral = false; + // Hex + if (stream.match(/^&H[0-9a-f]+/i)) { + intLiteral = true; + } + // Octal + else if (stream.match(/^&O[0-7]+/i)) { + intLiteral = true; + } + // Decimal + else if (stream.match(/^[1-9]\d*F?/)) { + // Decimal literals may be "imaginary" + stream.eat(/J/i); + // TODO - Can you have imaginary longs? + intLiteral = true; + } + // Zero by itself with no other piece of number. + else if (stream.match(/^0(?![\dx])/i)) { + intLiteral = true; + } + if (intLiteral) { + // Integer literals may be "long" + stream.eat(/L/i); + return 'number'; + } + } + + // Handle Strings + if (stream.match(stringPrefixes)) { + state.tokenize = tokenStringFactory(stream.current()); + return state.tokenize(stream, state); + } + + // Handle operators and Delimiters + if (stream.match(tripleDelimiters) || stream.match(doubleDelimiters)) { + return null; + } + if (stream.match(doubleOperators) + || stream.match(singleOperators) + || stream.match(wordOperators)) { + return 'operator'; + } + if (stream.match(singleDelimiters)) { + return null; + } + /*if (stream.match(doOpening)) { + indent(stream, state); + state.doInCurrentLine = true; + return 'keyword'; + } + if (stream.match(opening)) { + if (!state.doInCurrentLine) + indent(stream, state); + else + state.doInCurrentLine = false; + return 'keyword'; + }*/ + if (stream.match(middle)) { + return 'keyword'; + } + + if (stream.match(doubleClosing)) { + dedent(stream, state); + dedent(stream, state); + return 'keyword'; + } + if (stream.match(closing)) { + dedent(stream, state); + return 'keyword'; + } + + if (stream.match(types)) { + return 'keyword'; + } + + if (stream.match(keywords)) { + return 'keyword'; + } + + if (stream.match(identifiers)) { + return 'variable'; + } + + // Handle non-detected items + stream.next(); + return ERRORCLASS; + } + + function nextUntilUnescaped(stream, end) { + var escaped = false, next; + while ((next = stream.next()) != null) { + if (next == end && !escaped) + return false; + escaped = !escaped && next == "\\"; + } + return escaped; + } + + function tokenStringFactory(delimiter) { + var singleline = delimiter.length == 1; + var OUTCLASS = 'string'; + + + return function(stream, state) { + if (!nextUntilUnescaped(stream, '"')) + state.tokenize = tokenBase; + return OUTCLASS; + }; + } + + + function tokenLexer(stream, state) { + var style = state.tokenize(stream, state); + var current = stream.current(); + + // Handle '.' connected identifiers + if (current === '.') { + style = state.tokenize(stream, state); + current = stream.current(); + if (style === 'variable') { + return 'variable'; + } else { + return ERRORCLASS; + } + } + + + var delimiter_index = '[({'.indexOf(current); + if (delimiter_index !== -1) { + indent(stream, state); + } + if (indentInfo === 'dedent') { + if (dedent(stream, state)) { + return ERRORCLASS; + } + } + delimiter_index = '])}'.indexOf(current); + if (delimiter_index !== -1) { + if (dedent(stream, state)) { + return ERRORCLASS; + } + } + + return style; + } + + var external = { + electricChars: "dDpPtTfFeE ", + startState: function() { + return { + tokenize: tokenBase, + lastToken: null, + currentIndent: 0, + nextLineIndent: 0, + doInCurrentLine: false + + + }; + }, + token: function(stream, state) { + if (stream.sol()) { + state.currentIndent += state.nextLineIndent; + state.nextLineIndent = 0; + state.doInCurrentLine = 0; + } + var style = tokenLexer(stream, state); + + state.lastToken = {style: style, content: stream.current()}; + + + + return style; + }, + indent: function(state, textAfter) { + var trueText = textAfter.replace(/^\s+|\s+$/g, ''); + if (trueText.match(closing) || trueText.match(doubleClosing) || trueText.match(middle)) + return conf.indentUnit * (state.currentIndent - 1); + if (state.currentIndent < 0) + return 0; + return state.currentIndent * conf.indentUnit; + } + + }; + return external; +}); + +CodeMirror.defineMIME("text/x-vb", "vb"); diff --git a/res/codemirror/codemirror.css b/res/codemirror/codemirror.css new file mode 100644 index 0000000..5edbff5 --- /dev/null +++ b/res/codemirror/codemirror.css @@ -0,0 +1,243 @@ +/* BASICS */ + +.CodeMirror { + /* Set height, width, borders, and global font properties here */ + font-family: monospace; + height: 300px; +} +.CodeMirror-scroll { + /* Set scrolling behaviour here */ + overflow: auto; +} + +/* PADDING */ + +.CodeMirror-lines { + padding: 4px 0; /* Vertical padding around content */ +} +.CodeMirror pre { + padding: 0 4px; /* Horizontal padding of content */ +} + +.CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler { + background-color: white; /* The little square between H and V scrollbars */ +} + +/* GUTTER */ + +.CodeMirror-gutters { + border-right: 1px solid #ddd; + background-color: #f7f7f7; + white-space: nowrap; +} +.CodeMirror-linenumbers {} +.CodeMirror-linenumber { + padding: 0 3px 0 5px; + min-width: 20px; + text-align: right; + color: #999; +} + +/* CURSOR */ + +.CodeMirror div.CodeMirror-cursor { + border-left: 1px solid black; + z-index: 3; +} +/* Shown when moving in bi-directional text */ +.CodeMirror div.CodeMirror-secondarycursor { + border-left: 1px solid silver; +} +.CodeMirror.cm-keymap-fat-cursor div.CodeMirror-cursor { + width: auto; + border: 0; + background: #7e7; + z-index: 1; +} +/* Can style cursor different in overwrite (non-insert) mode */ +.CodeMirror div.CodeMirror-cursor.CodeMirror-overwrite {} + +.cm-tab { display: inline-block; } + +/* DEFAULT THEME */ + +.cm-s-default .cm-keyword {color: #708;} +.cm-s-default .cm-atom {color: #219;} +.cm-s-default .cm-number {color: #164;} +.cm-s-default .cm-def {color: #00f;} +.cm-s-default .cm-variable {color: black;} +.cm-s-default .cm-variable-2 {color: #05a;} +.cm-s-default .cm-variable-3 {color: #085;} +.cm-s-default .cm-property {color: black;} +.cm-s-default .cm-operator {color: black;} +.cm-s-default .cm-comment {color: #a50;} +.cm-s-default .cm-string {color: #a11;} +.cm-s-default .cm-string-2 {color: #f50;} +.cm-s-default .cm-meta {color: #555;} +.cm-s-default .cm-error {color: #f00;} +.cm-s-default .cm-qualifier {color: #555;} +.cm-s-default .cm-builtin {color: #30a;} +.cm-s-default .cm-bracket {color: #997;} +.cm-s-default .cm-tag {color: #170;} +.cm-s-default .cm-attribute {color: #00c;} +.cm-s-default .cm-header {color: blue;} +.cm-s-default .cm-quote {color: #090;} +.cm-s-default .cm-hr {color: #999;} +.cm-s-default .cm-link {color: #00c;} + +.cm-negative {color: #d44;} +.cm-positive {color: #292;} +.cm-header, .cm-strong {font-weight: bold;} +.cm-em {font-style: italic;} +.cm-link {text-decoration: underline;} + +.cm-invalidchar {color: #f00;} + +div.CodeMirror span.CodeMirror-matchingbracket {color: #0f0;} +div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;} + +/* STOP */ + +/* The rest of this file contains styles related to the mechanics of + the editor. You probably shouldn't touch them. */ + +.CodeMirror { + line-height: 1; + position: relative; + overflow: hidden; + background: white; + color: black; +} + +.CodeMirror-scroll { + /* 30px is the magic margin used to hide the element's real scrollbars */ + /* See overflow: hidden in .CodeMirror */ + margin-bottom: -30px; margin-right: -30px; + padding-bottom: 30px; padding-right: 30px; + height: 100%; + outline: none; /* Prevent dragging from highlighting the element */ + position: relative; +} +.CodeMirror-sizer { + position: relative; +} + +/* The fake, visible scrollbars. Used to force redraw during scrolling + before actuall scrolling happens, thus preventing shaking and + flickering artifacts. */ +.CodeMirror-vscrollbar, .CodeMirror-hscrollbar, .CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler { + position: absolute; + z-index: 6; + display: none; +} +.CodeMirror-vscrollbar { + right: 0; top: 0; + overflow-x: hidden; + overflow-y: scroll; +} +.CodeMirror-hscrollbar { + bottom: 0; left: 0; + overflow-y: hidden; + overflow-x: scroll; +} +.CodeMirror-scrollbar-filler { + right: 0; bottom: 0; +} +.CodeMirror-gutter-filler { + left: 0; bottom: 0; +} + +.CodeMirror-gutters { + position: absolute; left: 0; top: 0; + padding-bottom: 30px; + z-index: 3; +} +.CodeMirror-gutter { + white-space: normal; + height: 100%; + padding-bottom: 30px; + margin-bottom: -32px; + display: inline-block; +} +.CodeMirror-gutter-elt { + position: absolute; + cursor: default; + z-index: 4; +} + +.CodeMirror-lines { + cursor: text; +} +.CodeMirror pre { + /* Reset some styles that the rest of the page might have set */ + -moz-border-radius: 0; -webkit-border-radius: 0; border-radius: 0; + border-width: 0; + background: transparent; + font-family: inherit; + font-size: inherit; + margin: 0; + white-space: pre; + word-wrap: normal; + line-height: inherit; + color: inherit; + z-index: 2; + position: relative; + overflow: visible; +} +.CodeMirror-wrap pre { + word-wrap: break-word; + white-space: pre-wrap; + word-break: normal; +} +.CodeMirror-linebackground { + position: absolute; + left: 0; right: 0; top: 0; bottom: 0; + z-index: 0; +} + +.CodeMirror-linewidget { + position: relative; + z-index: 2; + overflow: auto; +} + +.CodeMirror-widget { + display: inline-block; +} + +.CodeMirror-wrap .CodeMirror-scroll { + overflow-x: hidden; +} + +.CodeMirror-measure { + position: absolute; + width: 100%; height: 0px; + overflow: hidden; + visibility: hidden; +} +.CodeMirror-measure pre { position: static; } + +.CodeMirror div.CodeMirror-cursor { + position: absolute; + visibility: hidden; + border-right: none; + width: 0; +} +.CodeMirror-focused div.CodeMirror-cursor { + visibility: visible; +} + +.CodeMirror-selected { background: #d9d9d9; } +.CodeMirror-focused .CodeMirror-selected { background: #d7d4f0; } + +.cm-searching { + background: #ffa; + background: rgba(255, 255, 0, .4); +} + +@media print { + /* Hide the cursor when printing */ + .CodeMirror div.CodeMirror-cursor { + visibility: hidden; + } +} diff --git a/res/codemirror/codemirror.js b/res/codemirror/codemirror.js new file mode 100644 index 0000000..fd041d4 --- /dev/null +++ b/res/codemirror/codemirror.js @@ -0,0 +1,6722 @@ +// CodeMirror version 3.13 +// +// CodeMirror is the only global var we claim +window.CodeMirror = (function() { + "use strict"; + + // BROWSER SNIFFING + + // Crude, but necessary to handle a number of hard-to-feature-detect + // bugs and behavior differences. + var gecko = /gecko\/\d/i.test(navigator.userAgent); + var ie = /MSIE \d/.test(navigator.userAgent); + var ie_lt8 = ie && (document.documentMode == null || document.documentMode < 8); + var ie_lt9 = ie && (document.documentMode == null || document.documentMode < 9); + var webkit = /WebKit\//.test(navigator.userAgent); + var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent); + var chrome = /Chrome\//.test(navigator.userAgent); + var opera = /Opera\//.test(navigator.userAgent); + var safari = /Apple Computer/.test(navigator.vendor); + var khtml = /KHTML\//.test(navigator.userAgent); + var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent); + var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent); + var phantom = /PhantomJS/.test(navigator.userAgent); + + var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent); + // This is woefully incomplete. Suggestions for alternative methods welcome. + var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent); + var mac = ios || /Mac/.test(navigator.platform); + var windows = /windows/i.test(navigator.platform); + + var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/); + if (opera_version) + opera_version = Number(opera_version[1]); + // Some browsers use the wrong event properties to signal cmd/ctrl on OS X + var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11)); + var captureMiddleClick = gecko || (ie && !ie_lt9); + + // Optimize some code when these features are not used + var sawReadOnlySpans = false, sawCollapsedSpans = false; + + // CONSTRUCTOR + + function CodeMirror(place, options) { + if (!(this instanceof CodeMirror)) + return new CodeMirror(place, options); + + this.options = options = options || {}; + // Determine effective options based on given values and defaults. + for (var opt in defaults) + if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt)) + options[opt] = defaults[opt]; + setGuttersForLineNumbers(options); + + var docStart = typeof options.value == "string" ? 0 : options.value.first; + var display = this.display = makeDisplay(place, docStart); + display.wrapper.CodeMirror = this; + updateGutters(this); + if (options.autofocus && !mobile) + focusInput(this); + + this.state = {keyMaps: [], + overlays: [], + modeGen: 0, + overwrite: false, focused: false, + suppressEdits: false, pasteIncoming: false, + draggingText: false, + highlight: new Delayed()}; + + themeChanged(this); + if (options.lineWrapping) + this.display.wrapper.className += " CodeMirror-wrap"; + + var doc = options.value; + if (typeof doc == "string") + doc = new Doc(options.value, options.mode); + operation(this, attachDoc)(this, doc); + + // Override magic textarea content restore that IE sometimes does + // on our hidden textarea on reload + if (ie) + setTimeout(bind(resetInput, this, true), 20); + + registerEventHandlers(this); + // IE throws unspecified error in certain cases, when + // trying to access activeElement before onload + var hasFocus; + try { + hasFocus = (document.activeElement == display.input); + } catch (e) { + } + if (hasFocus || (options.autofocus && !mobile)) + setTimeout(bind(onFocus, this), 20); + else + onBlur(this); + + operation(this, function() { + for (var opt in optionHandlers) + if (optionHandlers.propertyIsEnumerable(opt)) + optionHandlers[opt](this, options[opt], Init); + for (var i = 0; i < initHooks.length; ++i) + initHooks[i](this); + })(); + } + + // DISPLAY CONSTRUCTOR + + function makeDisplay(place, docStart) { + var d = {}; + + var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none; font-size: 4px;"); + if (webkit) + input.style.width = "1000px"; + else + input.setAttribute("wrap", "off"); + // if border: 0; -- iOS fails to open keyboard (issue #1287) + if (ios) + input.style.border = "1px solid black"; + input.setAttribute("autocorrect", "off"); + input.setAttribute("autocapitalize", "off"); + input.setAttribute("spellcheck", "false"); + + // Wraps and hides input textarea + d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); + // The actual fake scrollbars. + d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar"); + d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar"); + d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); + d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler"); + // DIVs containing the selection and the actual code + d.lineDiv = elt("div", null, "CodeMirror-code"); + d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); + // Blinky cursor, and element used to ensure cursor fits at the end of a line + d.cursor = elt("div", "\u00a0", "CodeMirror-cursor"); + // Secondary cursor, shown when on a 'jump' in bi-directional text + d.otherCursor = elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"); + // Used to measure text size + d.measure = elt("div", null, "CodeMirror-measure"); + // Wraps everything that needs to exist inside the vertically-padded coordinate system + d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor], + null, "position: relative; outline: none"); + // Moved around its parent to cover visible view + d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative"); + // Set to the height of the text, causes scrolling + d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); + // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers + d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;"); + // Will contain the gutters, if any + d.gutters = elt("div", null, "CodeMirror-gutters"); + d.lineGutter = null; + // Provides scrolling + 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.inputDiv, d.scrollbarH, d.scrollbarV, + d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror"); + // Work around IE7 z-index bug + if (ie_lt8) { + d.gutters.style.zIndex = -1; + d.scroller.style.paddingRight = 0; + } + if (place.appendChild) + place.appendChild(d.wrapper); + else + place(d.wrapper); + + // Needed to hide big blue blinking cursor on Mobile Safari + if (ios) + input.style.width = "0px"; + if (!webkit) + d.scroller.draggable = true; + // Needed to handle Tab key in KHTML + if (khtml) { + d.inputDiv.style.height = "1px"; + d.inputDiv.style.position = "absolute"; + } + // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). + else if (ie_lt8) + d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px"; + + // Current visible range (may be bigger than the view window). + d.viewOffset = d.lastSizeC = 0; + d.showingFrom = d.showingTo = docStart; + + // 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; + // See readInput and resetInput + d.prevInput = ""; + // Set to true when a non-horizontal-scrolling widget is added. As + // an optimization, widget aligning is skipped when d is false. + d.alignWidgets = false; + // Flag that indicates whether we currently expect input to appear + // (after some event like 'keypress' or 'input') and are polling + // intensively. + d.pollingFast = false; + // Self-resetting timeout for the poller + d.poll = new Delayed(); + + d.cachedCharWidth = d.cachedTextHeight = null; + d.measureLineCache = []; + d.measureLineCachePos = 0; + + // Tracks when resetInput has punted to just putting a short + // string instead of the (large) selection. + d.inaccurateSelection = false; + + // 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; + + return d; + } + + // STATE UPDATES + + // Used to get the editor into a consistent state again when options change. + + function loadMode(cm) { + cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption); + 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); + } + + function wrappingChanged(cm) { + if (cm.options.lineWrapping) { + cm.display.wrapper.className += " CodeMirror-wrap"; + cm.display.sizer.style.minWidth = ""; + } else { + cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", ""); + computeMaxLength(cm); + } + estimateLineHeights(cm); + regChange(cm); + clearCaches(cm); + setTimeout(function() { + updateScrollbars(cm); + }, 100); + } + + 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; + else if (wrapping) + return (Math.ceil(line.text.length / perLine) || 1) * th; + else + return 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); + }); + } + + function keyMapChanged(cm) { + var style = keyMap[cm.options.keyMap].style; + cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") + + (style ? " cm-keymap-" + style : ""); + } + + function themeChanged(cm) { + cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + + cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); + clearCaches(cm); + } + + function guttersChanged(cm) { + updateGutters(cm); + regChange(cm); + setTimeout(function() { + alignHorizontally(cm); + }, 20); + } + + function updateGutters(cm) { + var gutters = cm.display.gutters, specs = cm.options.gutters; + removeChildren(gutters); + for (var i = 0; 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"; + } + + function lineLength(doc, line) { + if (line.height == 0) + return 0; + var len = line.text.length, merged, cur = line; + while (merged = collapsedSpanAtStart(cur)) { + var found = merged.find(); + cur = getLine(doc, found.from.line); + len += found.from.ch - found.to.ch; + } + cur = line; + while (merged = collapsedSpanAtEnd(cur)) { + var found = merged.find(); + len -= cur.text.length - found.from.ch; + cur = getLine(doc, found.to.line); + len += cur.text.length - found.to.ch; + } + return len; + } + + function computeMaxLength(cm) { + var d = cm.display, doc = cm.doc; + d.maxLine = getLine(doc, doc.first); + d.maxLineLength = lineLength(doc, d.maxLine); + d.maxLineChanged = true; + doc.iter(function(line) { + var len = lineLength(doc, line); + if (len > d.maxLineLength) { + d.maxLineLength = len; + d.maxLine = line; + } + }); + } + + // Make sure the gutters options contains the element + // "CodeMirror-linenumbers" when the lineNumbers option is true. + function setGuttersForLineNumbers(options) { + var found = false; + for (var i = 0; i < options.gutters.length; ++i) { + if (options.gutters[i] == "CodeMirror-linenumbers") { + if (options.lineNumbers) + found = true; + else + options.gutters.splice(i--, 1); + } + } + if (!found && options.lineNumbers) + options.gutters.push("CodeMirror-linenumbers"); + } + + // SCROLLBARS + + // Re-synchronize the fake scrollbars with the actual size of the + // content. Optionally force a scrollTop. + function updateScrollbars(cm) { + var d = cm.display, docHeight = cm.doc.height; + var totalHeight = docHeight + paddingVert(d); + d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px"; + d.gutters.style.height = Math.max(totalHeight, d.scroller.clientHeight - scrollerCutOff) + "px"; + var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight); + var needsH = d.scroller.scrollWidth > d.scroller.clientWidth; + var needsV = scrollHeight > d.scroller.clientHeight; + if (needsV) { + d.scrollbarV.style.display = "block"; + d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0"; + d.scrollbarV.firstChild.style.height = + (scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px"; + } else + d.scrollbarV.style.display = ""; + if (needsH) { + d.scrollbarH.style.display = "block"; + d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0"; + d.scrollbarH.firstChild.style.width = + (d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px"; + } else + d.scrollbarH.style.display = ""; + if (needsH && needsV) { + d.scrollbarFiller.style.display = "block"; + d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px"; + } else + d.scrollbarFiller.style.display = ""; + if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { + d.gutterFiller.style.display = "block"; + d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px"; + d.gutterFiller.style.width = d.gutters.offsetWidth + "px"; + } else + d.gutterFiller.style.display = ""; + + if (mac_geLion && scrollbarWidth(d.measure) === 0) + d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px"; + } + + function visibleLines(display, doc, viewPort) { + var top = display.scroller.scrollTop, height = display.wrapper.clientHeight; + if (typeof viewPort == "number") + top = viewPort; + else if (viewPort) { + top = viewPort.top; + height = viewPort.bottom - viewPort.top; + } + top = Math.floor(top - paddingTop(display)); + var bottom = Math.ceil(top + height); + return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)}; + } + + // LINE NUMBERS + + function alignHorizontally(cm) { + var display = cm.display; + 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, l = comp + "px"; + for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) + if (n.alignable) { + for (var i = 0, a = n.alignable; i < a.length; ++i) + a[i].style.left = l; + } + if (cm.options.fixedGutter) + display.gutters.style.left = (comp + gutterW) + "px"; + } + + 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); + display.lineNumWidth = display.lineNumInnerWidth + padding; + display.lineNumChars = display.lineNumInnerWidth ? last.length : -1; + display.lineGutter.style.width = display.lineNumWidth + "px"; + return true; + } + return false; + } + + function lineNumberFor(options, i) { + return String(options.lineNumberFormatter(i + options.firstLineNumber)); + } + function compensateForHScroll(display) { + return getRect(display.scroller).left - getRect(display.sizer).left; + } + + // DISPLAY DRAWING + + function updateDisplay(cm, changes, viewPort) { + var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo, updated; + var visible = visibleLines(cm.display, cm.doc, viewPort); + for (; ; ) { + if (!updateDisplayInner(cm, changes, visible)) + break; + updated = true; + updateSelection(cm); + updateScrollbars(cm); + + // Clip forced viewport to actual scrollable area + if (viewPort) + viewPort = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, + typeof viewPort == "number" ? viewPort : viewPort.top); + visible = visibleLines(cm.display, cm.doc, viewPort); + if (visible.from >= cm.display.showingFrom && visible.to <= cm.display.showingTo) + break; + changes = []; + } + + if (updated) { + signalLater(cm, "update", cm); + if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo) + signalLater(cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo); + } + return updated; + } + + // Uses a set of changes plus the current scroll position to + // determine which DOM updates have to be made, and makes the + // updates. + function updateDisplayInner(cm, changes, visible) { + var display = cm.display, doc = cm.doc; + if (!display.wrapper.clientWidth) { + display.showingFrom = display.showingTo = doc.first; + display.viewOffset = 0; + return; + } + + // Bail out if the visible area is already rendered and nothing changed. + if (changes.length == 0 && + visible.from > display.showingFrom && visible.to < display.showingTo) + return; + + if (maybeUpdateLineNumberWidth(cm)) + changes = [{from: doc.first, to: doc.first + doc.size}]; + var gutterW = display.sizer.style.marginLeft = display.gutters.offsetWidth + "px"; + display.scrollbarH.style.left = cm.options.fixedGutter ? gutterW : "0"; + + // Used to determine which lines need their line numbers updated + var positionsChangedFrom = Infinity; + if (cm.options.lineNumbers) + for (var i = 0; i < changes.length; ++i) + if (changes[i].diff) { + positionsChangedFrom = changes[i].from; + break; + } + + var end = doc.first + doc.size; + var from = Math.max(visible.from - cm.options.viewportMargin, doc.first); + var to = Math.min(end, visible.to + cm.options.viewportMargin); + if (display.showingFrom < from && from - display.showingFrom < 20) + from = Math.max(doc.first, display.showingFrom); + if (display.showingTo > to && display.showingTo - to < 20) + to = Math.min(end, display.showingTo); + if (sawCollapsedSpans) { + from = lineNo(visualLine(doc, getLine(doc, from))); + while (to < end && lineIsHidden(doc, getLine(doc, to))) + ++to; + } + + // Create a range of theoretically intact lines, and punch holes + // in that using the change info. + var intact = [{from: Math.max(display.showingFrom, doc.first), + to: Math.min(display.showingTo, end)}]; + if (intact[0].from >= intact[0].to) + intact = []; + else + intact = computeIntact(intact, changes); + // When merged lines are present, we might have to reduce the + // intact ranges because changes in continued fragments of the + // intact lines do require the lines to be redrawn. + if (sawCollapsedSpans) + for (var i = 0; i < intact.length; ++i) { + var range = intact[i], merged; + while (merged = collapsedSpanAtEnd(getLine(doc, range.to - 1))) { + var newTo = merged.find().from.line; + if (newTo > range.from) + range.to = newTo; + else { + intact.splice(i--, 1); + break; + } + } + } + + // Clip off the parts that won't be visible + var intactLines = 0; + for (var i = 0; i < intact.length; ++i) { + var range = intact[i]; + if (range.from < from) + range.from = from; + if (range.to > to) + range.to = to; + if (range.from >= range.to) + intact.splice(i--, 1); + else + intactLines += range.to - range.from; + } + if (intactLines == to - from && from == display.showingFrom && to == display.showingTo) { + updateViewOffset(cm); + return; + } + intact.sort(function(a, b) { + return a.from - b.from; + }); + + // Avoid crashing on IE's "unspecified error" when in iframes + try { + var focused = document.activeElement; + } catch (e) { + } + if (intactLines < (to - from) * .7) + display.lineDiv.style.display = "none"; + patchDisplay(cm, from, to, intact, positionsChangedFrom); + display.lineDiv.style.display = ""; + if (focused && document.activeElement != focused && focused.offsetHeight) + focused.focus(); + + var different = from != display.showingFrom || to != display.showingTo || + display.lastSizeC != display.wrapper.clientHeight; + // This is just a bogus formula that detects when the editor is + // resized or the font size changes. + if (different) + display.lastSizeC = display.wrapper.clientHeight; + display.showingFrom = from; + display.showingTo = to; + startWorker(cm, 100); + + var prevBottom = display.lineDiv.offsetTop; + for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) + if (node.lineObj) { + if (ie_lt8) { + var bot = node.offsetTop + node.offsetHeight; + height = bot - prevBottom; + prevBottom = bot; + } else { + var box = getRect(node); + height = box.bottom - box.top; + } + var diff = node.lineObj.height - height; + if (height < 2) + height = textHeight(display); + if (diff > .001 || diff < -.001) { + updateLineHeight(node.lineObj, height); + var widgets = node.lineObj.widgets; + if (widgets) + for (var i = 0; i < widgets.length; ++i) + widgets[i].height = widgets[i].node.offsetHeight; + } + } + updateViewOffset(cm); + + return true; + } + + function updateViewOffset(cm) { + var off = cm.display.viewOffset = heightAtLine(cm, getLine(cm.doc, cm.display.showingFrom)); + // Position the mover div to align with the current virtual scroll position + cm.display.mover.style.top = off + "px"; + } + + function computeIntact(intact, changes) { + for (var i = 0, l = changes.length || 0; i < l; ++i) { + var change = changes[i], intact2 = [], diff = change.diff || 0; + for (var j = 0, l2 = intact.length; j < l2; ++j) { + var range = intact[j]; + if (change.to <= range.from && change.diff) { + intact2.push({from: range.from + diff, to: range.to + diff}); + } else if (change.to <= range.from || change.from >= range.to) { + intact2.push(range); + } else { + if (change.from > range.from) + intact2.push({from: range.from, to: change.from}); + if (change.to < range.to) + intact2.push({from: change.to + diff, to: range.to + diff}); + } + } + intact = intact2; + } + return intact; + } + + function getDimensions(cm) { + var d = cm.display, left = {}, width = {}; + for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { + left[cm.options.gutters[i]] = n.offsetLeft; + width[cm.options.gutters[i]] = n.offsetWidth; + } + return {fixedPos: compensateForHScroll(d), + gutterTotalWidth: d.gutters.offsetWidth, + gutterLeft: left, + gutterWidth: width, + wrapperWidth: d.wrapper.clientWidth}; + } + + function patchDisplay(cm, from, to, intact, updateNumbersFrom) { + var dims = getDimensions(cm); + var display = cm.display, lineNumbers = cm.options.lineNumbers; + if (!intact.length && (!webkit || !cm.display.currentWheelTarget)) + removeChildren(display.lineDiv); + var container = display.lineDiv, cur = container.firstChild; + + function rm(node) { + var next = node.nextSibling; + if (webkit && mac && cm.display.currentWheelTarget == node) { + node.style.display = "none"; + node.lineObj = null; + } else { + node.parentNode.removeChild(node); + } + return next; + } + + var nextIntact = intact.shift(), lineN = from; + cm.doc.iter(from, to, function(line) { + if (nextIntact && nextIntact.to == lineN) + nextIntact = intact.shift(); + if (lineIsHidden(cm.doc, line)) { + if (line.height != 0) + updateLineHeight(line, 0); + if (line.widgets && cur.previousSibling) + for (var i = 0; i < line.widgets.length; ++i) + if (line.widgets[i].showIfHidden) { + var prev = cur.previousSibling; + if (/pre/i.test(prev.nodeName)) { + var wrap = elt("div", null, null, "position: relative"); + prev.parentNode.replaceChild(wrap, prev); + wrap.appendChild(prev); + prev = wrap; + } + var wnode = prev.appendChild(elt("div", [line.widgets[i].node], "CodeMirror-linewidget")); + positionLineWidget(line.widgets[i], wnode, prev, dims); + } + } else if (nextIntact && nextIntact.from <= lineN && nextIntact.to > lineN) { + // This line is intact. Skip to the actual node. Update its + // line number if needed. + while (cur.lineObj != line) + cur = rm(cur); + if (lineNumbers && updateNumbersFrom <= lineN && cur.lineNumber) + setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineN)); + cur = cur.nextSibling; + } else { + // For lines with widgets, make an attempt to find and reuse + // the existing element, so that widgets aren't needlessly + // removed and re-inserted into the dom + if (line.widgets) + for (var j = 0, search = cur, reuse; search && j < 20; ++j, search = search.nextSibling) + if (search.lineObj == line && /div/i.test(search.nodeName)) { + reuse = search; + break; + } + // This line needs to be generated. + var lineNode = buildLineElement(cm, line, lineN, dims, reuse); + if (lineNode != reuse) { + container.insertBefore(lineNode, cur); + } else { + while (cur != reuse) + cur = rm(cur); + cur = cur.nextSibling; + } + + lineNode.lineObj = line; + } + ++lineN; + }); + while (cur) + cur = rm(cur); + } + + function buildLineElement(cm, line, lineNo, dims, reuse) { + var lineElement = lineContent(cm, line); + var markers = line.gutterMarkers, display = cm.display, wrap; + + if (!cm.options.lineNumbers && !markers && !line.bgClass && !line.wrapClass && !line.widgets) + return lineElement; + + // Lines with gutter elements, widgets or a background class need + // to be wrapped again, and have the extra elements added to the + // wrapper div + + if (reuse) { + reuse.alignable = null; + var isOk = true, widgetsSeen = 0; + for (var n = reuse.firstChild, next; n; n = next) { + next = n.nextSibling; + if (!/\bCodeMirror-linewidget\b/.test(n.className)) { + reuse.removeChild(n); + } else { + for (var i = 0, first = true; i < line.widgets.length; ++i) { + var widget = line.widgets[i], isFirst = false; + if (!widget.above) { + isFirst = first; + first = false; + } + if (widget.node == n.firstChild) { + positionLineWidget(widget, n, reuse, dims); + ++widgetsSeen; + if (isFirst) + reuse.insertBefore(lineElement, n); + break; + } + } + if (i == line.widgets.length) { + isOk = false; + break; + } + } + } + if (isOk && widgetsSeen == line.widgets.length) { + wrap = reuse; + reuse.className = line.wrapClass || ""; + } + } + if (!wrap) { + wrap = elt("div", null, line.wrapClass, "position: relative"); + wrap.appendChild(lineElement); + } + // Kludge to make sure the styled element lies behind the selection (by z-index) + if (line.bgClass) + wrap.insertBefore(elt("div", null, line.bgClass + " CodeMirror-linebackground"), wrap.firstChild); + if (cm.options.lineNumbers || markers) { + var gutterWrap = wrap.insertBefore(elt("div", null, null, "position: absolute; left: " + + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"), + wrap.firstChild); + if (cm.options.fixedGutter) + (wrap.alignable || (wrap.alignable = [])).push(gutterWrap); + if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) + wrap.lineNumber = gutterWrap.appendChild( + elt("div", lineNumberFor(cm.options, lineNo), + "CodeMirror-linenumber CodeMirror-gutter-elt", + "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: " + + 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")); + } + } + if (ie_lt8) + wrap.style.zIndex = 2; + if (line.widgets && wrap != reuse) + for (var i = 0, ws = line.widgets; i < ws.length; ++i) { + var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget"); + positionLineWidget(widget, node, wrap, dims); + if (widget.above) + wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement); + else + wrap.appendChild(node); + signalLater(widget, "redraw"); + } + return wrap; + } + + function positionLineWidget(widget, node, wrap, dims) { + if (widget.noHScroll) { + (wrap.alignable || (wrap.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"; + } + } + + // SELECTION / CURSOR + + function updateSelection(cm) { + var display = cm.display; + var collapsed = posEq(cm.doc.sel.from, cm.doc.sel.to); + if (collapsed || cm.options.showCursorWhenSelecting) + updateSelectionCursor(cm); + else + display.cursor.style.display = display.otherCursor.style.display = "none"; + if (!collapsed) + updateSelectionRange(cm); + else + display.selectionDiv.style.display = "none"; + + // Move the hidden textarea near the cursor to prevent scrolling artifacts + if (cm.options.moveInputWithCursor) { + var headPos = cursorCoords(cm, cm.doc.sel.head, "div"); + var wrapOff = getRect(display.wrapper), lineOff = getRect(display.lineDiv); + display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10, + headPos.top + lineOff.top - wrapOff.top)) + "px"; + display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10, + headPos.left + lineOff.left - wrapOff.left)) + "px"; + } + } + + // No selection, plain cursor + function updateSelectionCursor(cm) { + var display = cm.display, pos = cursorCoords(cm, cm.doc.sel.head, "div"); + display.cursor.style.left = pos.left + "px"; + display.cursor.style.top = pos.top + "px"; + display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; + display.cursor.style.display = ""; + + if (pos.other) { + display.otherCursor.style.display = ""; + display.otherCursor.style.left = pos.other.left + "px"; + display.otherCursor.style.top = pos.other.top + "px"; + display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; + } else { + display.otherCursor.style.display = "none"; + } + } + + // Highlight selection + function updateSelectionRange(cm) { + var display = cm.display, doc = cm.doc, sel = cm.doc.sel; + var fragment = document.createDocumentFragment(); + var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display); + + function add(left, top, width, bottom) { + if (top < 0) + top = 0; + fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left + + "px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) + + "px; height: " + (bottom - top) + "px")); + } + + function drawForLine(line, fromArg, toArg, retTop) { + var lineObj = getLine(doc, line); + var lineLen = lineObj.text.length, rVal = retTop ? Infinity : -Infinity; + function coords(ch) { + return charCoords(cm, Pos(line, ch), "div", lineObj); + } + + iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) { + var leftPos = coords(from), rightPos, left, right; + if (from == to) { + rightPos = leftPos; + left = right = leftPos.left; + } else { + rightPos = coords(to - 1); + if (dir == "rtl") { + var tmp = leftPos; + leftPos = rightPos; + rightPos = tmp; + } + left = leftPos.left; + right = rightPos.right; + } + if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part + add(left, leftPos.top, null, leftPos.bottom); + left = pl; + if (leftPos.bottom < rightPos.top) + add(left, leftPos.bottom, null, rightPos.top); + } + if (toArg == null && to == lineLen) + right = clientWidth; + if (fromArg == null && from == 0) + left = pl; + rVal = retTop ? Math.min(rightPos.top, rVal) : Math.max(rightPos.bottom, rVal); + if (left < pl + 1) + left = pl; + add(left, rightPos.top, right - left, rightPos.bottom); + }); + return rVal; + } + + if (sel.from.line == sel.to.line) { + drawForLine(sel.from.line, sel.from.ch, sel.to.ch); + } else { + var fromObj = getLine(doc, sel.from.line); + var cur = fromObj, merged, path = [sel.from.line, sel.from.ch], singleLine; + while (merged = collapsedSpanAtEnd(cur)) { + var found = merged.find(); + path.push(found.from.ch, found.to.line, found.to.ch); + if (found.to.line == sel.to.line) { + path.push(sel.to.ch); + singleLine = true; + break; + } + cur = getLine(doc, found.to.line); + } + + // This is a single, merged line + if (singleLine) { + for (var i = 0; i < path.length; i += 3) + drawForLine(path[i], path[i + 1], path[i + 2]); + } else { + var middleTop, middleBot, toObj = getLine(doc, sel.to.line); + if (sel.from.ch) + // Draw the first line of selection. + middleTop = drawForLine(sel.from.line, sel.from.ch, null, false); + else + // Simply include it in the middle block. + middleTop = heightAtLine(cm, fromObj) - display.viewOffset; + + if (!sel.to.ch) + middleBot = heightAtLine(cm, toObj) - display.viewOffset; + else + middleBot = drawForLine(sel.to.line, collapsedSpanAtStart(toObj) ? null : 0, sel.to.ch, true); + + if (middleTop < middleBot) + add(pl, middleTop, null, middleBot); + } + } + + removeChildrenAndAdd(display.selectionDiv, fragment); + display.selectionDiv.style.display = ""; + } + + // Cursor-blinking + function restartBlink(cm) { + if (!cm.state.focused) + return; + var display = cm.display; + clearInterval(display.blinker); + var on = true; + display.cursor.style.visibility = display.otherCursor.style.visibility = ""; + display.blinker = setInterval(function() { + display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden"; + }, cm.options.cursorBlinkRate); + } + + // HIGHLIGHT WORKER + + function startWorker(cm, time) { + if (cm.doc.mode.startState && cm.doc.frontier < cm.display.showingTo) + 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.showingTo) + return; + var end = +new Date + cm.options.workTime; + var state = copyState(doc.mode, getStateBefore(cm, doc.frontier)); + var changed = [], prevChange; + doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.showingTo + 500), function(line) { + if (doc.frontier >= cm.display.showingFrom) { // Visible + var oldStyles = line.styles; + line.styles = highlightLine(cm, line, state); + var ischange = !oldStyles || oldStyles.length != line.styles.length; + for (var i = 0; !ischange && i < oldStyles.length; ++i) + ischange = oldStyles[i] != line.styles[i]; + if (ischange) { + if (prevChange && prevChange.end == doc.frontier) + prevChange.end++; + else + changed.push(prevChange = {start: doc.frontier, end: doc.frontier + 1}); + } + line.stateAfter = copyState(doc.mode, state); + } else { + processLine(cm, line, 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 (changed.length) + operation(cm, function() { + for (var i = 0; i < changed.length; ++i) + regChange(this, changed[i].start, changed[i].end); + })(); + } + + // 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) { + var minindent, minline, doc = cm.doc; + for (var search = n, lim = n - 100; search > lim; --search) { + if (search <= doc.first) + return doc.first; + var line = getLine(doc, search - 1); + if (line.stateAfter) + return search; + var indented = countColumn(line.text, null, cm.options.tabSize); + if (minline == null || minindent > indented) { + minline = search - 1; + minindent = indented; + } + } + return minline; + } + + function getStateBefore(cm, n) { + var doc = cm.doc, display = cm.display; + if (!doc.mode.startState) + return true; + var pos = findStartLine(cm, n), 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, state); + var save = pos == n - 1 || pos % 5 == 0 || pos >= display.showingFrom && pos < display.showingTo; + line.stateAfter = save ? copyState(doc.mode, state) : null; + ++pos; + }); + return state; + } + + // POSITION MEASUREMENT + + function paddingTop(display) { + return display.lineSpace.offsetTop; + } + function paddingVert(display) { + return display.mover.offsetHeight - display.lineSpace.offsetHeight; + } + function paddingLeft(display) { + var e = removeChildrenAndAdd(display.measure, elt("pre", null, null, "text-align: left")).appendChild(elt("span", "x")); + return e.offsetLeft; + } + + function measureChar(cm, line, ch, data) { + var dir = -1; + data = data || measureLine(cm, line); + + for (var pos = ch; ; pos += dir) { + var r = data[pos]; + if (r) + break; + if (dir < 0 && pos == 0) + dir = 1; + } + return {left: pos < ch ? r.right : r.left, + right: pos > ch ? r.left : r.right, + top: r.top, bottom: r.bottom}; + } + + function findCachedMeasurement(cm, line) { + var cache = cm.display.measureLineCache; + for (var i = 0; i < cache.length; ++i) { + var memo = cache[i]; + if (memo.text == line.text && memo.markedSpans == line.markedSpans && + cm.display.scroller.clientWidth == memo.width && + memo.classes == line.textClass + "|" + line.bgClass + "|" + line.wrapClass) + return memo; + } + } + + function clearCachedMeasurement(cm, line) { + var exists = findCachedMeasurement(cm, line); + if (exists) + exists.text = exists.measure = exists.markedSpans = null; + } + + function measureLine(cm, line) { + // First look in the cache + var cached = findCachedMeasurement(cm, line); + if (cached) + return cached.measure; + + // Failing that, recompute and store result in cache + var measure = measureLineInner(cm, line); + var cache = cm.display.measureLineCache; + var memo = {text: line.text, width: cm.display.scroller.clientWidth, + markedSpans: line.markedSpans, measure: measure, + classes: line.textClass + "|" + line.bgClass + "|" + line.wrapClass}; + if (cache.length == 16) + cache[++cm.display.measureLineCachePos % 16] = memo; + else + cache.push(memo); + return measure; + } + + function measureLineInner(cm, line) { + var display = cm.display, measure = emptyArray(line.text.length); + var pre = lineContent(cm, line, measure); + + // IE does not cache element positions of inline elements between + // calls to getBoundingClientRect. This makes the loop below, + // which gathers the positions of all the characters on the line, + // do an amount of layout work quadratic to the number of + // characters. When line wrapping is off, we try to improve things + // by first subdividing the line into a bunch of inline blocks, so + // that IE can reuse most of the layout information from caches + // for those blocks. This does interfere with line wrapping, so it + // doesn't work when wrapping is on, but in that case the + // situation is slightly better, since IE does cache line-wrapping + // information and only recomputes per-line. + if (ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) { + var fragment = document.createDocumentFragment(); + var chunk = 10, n = pre.childNodes.length; + for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) { + var wrap = elt("div", null, null, "display: inline-block"); + for (var j = 0; j < chunk && n; ++j) { + wrap.appendChild(pre.firstChild); + --n; + } + fragment.appendChild(wrap); + } + pre.appendChild(fragment); + } + + removeChildrenAndAdd(display.measure, pre); + + var outer = getRect(display.lineDiv); + var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight; + // Work around an IE7/8 bug where it will sometimes have randomly + // replaced our pre with a clone at this point. + if (ie_lt9 && display.measure.first != pre) + removeChildrenAndAdd(display.measure, pre); + + for (var i = 0, cur; i < measure.length; ++i) + if (cur = measure[i]) { + var size = getRect(cur); + var top = Math.max(0, size.top - outer.top), bot = Math.min(size.bottom - outer.top, maxBot); + for (var j = 0; j < vranges.length; j += 2) { + var rtop = vranges[j], rbot = vranges[j + 1]; + if (rtop > bot || rbot < top) + continue; + if (rtop <= top && rbot >= bot || + top <= rtop && bot >= rbot || + Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) { + vranges[j] = Math.min(top, rtop); + vranges[j + 1] = Math.max(bot, rbot); + break; + } + } + if (j == vranges.length) + vranges.push(top, bot); + var right = size.right; + if (cur.measureRight) + right = getRect(cur.measureRight).left; + data[i] = {left: size.left - outer.left, right: right - outer.left, top: j}; + } + for (var i = 0, cur; i < data.length; ++i) + if (cur = data[i]) { + var vr = cur.top; + cur.top = vranges[vr]; + cur.bottom = vranges[vr + 1]; + } + + return data; + } + + function measureLineWidth(cm, line) { + var hasBadSpan = false; + if (line.markedSpans) + for (var i = 0; i < line.markedSpans; ++i) { + var sp = line.markedSpans[i]; + if (sp.collapsed && (sp.to == null || sp.to == line.text.length)) + hasBadSpan = true; + } + var cached = !hasBadSpan && findCachedMeasurement(cm, line); + if (cached) + return measureChar(cm, line, line.text.length, cached.measure).right; + + var pre = lineContent(cm, line); + var end = pre.appendChild(zeroWidthElement(cm.display.measure)); + removeChildrenAndAdd(cm.display.measure, pre); + return getRect(end).right - getRect(cm.display.lineDiv).left; + } + + function clearCaches(cm) { + cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0; + cm.display.cachedCharWidth = cm.display.cachedTextHeight = null; + if (!cm.options.lineWrapping) + cm.display.maxLineChanged = true; + cm.display.lineNumChars = null; + } + + // Context is one of "line", "div" (display.lineDiv), "local"/null (editor), or "page" + function intoCoordSystem(cm, lineObj, rect, context) { + if (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(cm, lineObj); + if (context != "local") + yOff -= cm.display.viewOffset; + if (context == "page") { + var lOff = getRect(cm.display.lineSpace); + yOff += lOff.top + (window.pageYOffset || (document.documentElement || document.body).scrollTop); + var xOff = lOff.left + (window.pageXOffset || (document.documentElement || document.body).scrollLeft); + rect.left += xOff; + rect.right += xOff; + } + rect.top += yOff; + rect.bottom += yOff; + return rect; + } + + // Context may be "window", "page", "div", or "local"/null + // Result is in "div" coords + function fromCoordSystem(cm, coords, context) { + if (context == "div") + return coords; + var left = coords.left, top = coords.top; + if (context == "page") { + left -= window.pageXOffset || (document.documentElement || document.body).scrollLeft; + top -= window.pageYOffset || (document.documentElement || document.body).scrollTop; + } + var lineSpaceBox = getRect(cm.display.lineSpace); + left -= lineSpaceBox.left; + top -= lineSpaceBox.top; + if (context == "local" || !context) { + var editorBox = getRect(cm.display.wrapper); + left += editorBox.left; + top += editorBox.top; + } + return {left: left, top: top}; + } + + function charCoords(cm, pos, context, lineObj) { + if (!lineObj) + lineObj = getLine(cm.doc, pos.line); + return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch), context); + } + + function cursorCoords(cm, pos, context, lineObj, measurement) { + lineObj = lineObj || getLine(cm.doc, pos.line); + if (!measurement) + measurement = measureLine(cm, lineObj); + function get(ch, right) { + var m = measureChar(cm, lineObj, ch, measurement); + if (right) + m.left = m.right; + else + m.right = m.left; + return intoCoordSystem(cm, lineObj, m, context); + } + function getBidi(ch, partPos) { + var part = order[partPos], right = part.level % 2; + if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) { + part = order[--partPos]; + ch = bidiRight(part) - (part.level % 2 ? 0 : 1); + right = true; + } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) { + part = order[++partPos]; + ch = bidiLeft(part) - part.level % 2; + right = false; + } + if (right && ch == part.to && ch > part.from) + return get(ch - 1); + return get(ch, right); + } + var order = getOrder(lineObj), ch = pos.ch; + if (!order) + return get(ch); + var partPos = getBidiPartAt(order, ch); + var val = getBidi(ch, partPos); + if (bidiOther != null) + val.other = getBidi(ch, bidiOther); + return val; + } + + function PosMaybeOutside(line, ch, outside) { + var pos = new Pos(line, ch); + if (outside) + pos.outside = true; + return pos; + } + + // Coords must be lineSpace-local + function coordsChar(cm, x, y) { + var doc = cm.doc; + y += cm.display.viewOffset; + if (y < 0) + return PosMaybeOutside(doc.first, 0, true); + var lineNo = lineAtHeight(doc, y), last = doc.first + doc.size - 1; + if (lineNo > last) + return PosMaybeOutside(doc.first + doc.size - 1, getLine(doc, last).text.length, true); + if (x < 0) + x = 0; + + for (; ; ) { + var lineObj = getLine(doc, lineNo); + var found = coordsCharInner(cm, lineObj, lineNo, x, y); + var merged = collapsedSpanAtEnd(lineObj); + var mergedPos = merged && merged.find(); + if (merged && found.ch >= mergedPos.from.ch) + lineNo = mergedPos.to.line; + else + return found; + } + } + + function coordsCharInner(cm, lineObj, lineNo, x, y) { + var innerOff = y - heightAtLine(cm, lineObj); + var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth; + var measurement = measureLine(cm, lineObj); + + function getX(ch) { + var sp = cursorCoords(cm, Pos(lineNo, ch), "line", + lineObj, measurement); + wrongLine = true; + if (innerOff > sp.bottom) + return sp.left - adjust; + else if (innerOff < sp.top) + return sp.left + adjust; + else + wrongLine = false; + return sp.left; + } + + var bidi = getOrder(lineObj), dist = lineObj.text.length; + var from = lineLeft(lineObj), to = lineRight(lineObj); + var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine; + + if (x > toX) + return PosMaybeOutside(lineNo, to, toOutside); + // Do a binary search between these bounds. + for (; ; ) { + if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) { + var after = x - fromX < toX - x, ch = after ? from : to; + while (isExtendingChar.test(lineObj.text.charAt(ch))) + ++ch; + var pos = PosMaybeOutside(lineNo, ch, after ? fromOutside : toOutside); + pos.after = after; + return pos; + } + var step = Math.ceil(dist / 2), middle = from + step; + if (bidi) { + middle = from; + for (var i = 0; i < step; ++i) + middle = moveVisually(lineObj, middle, 1); + } + var middleX = getX(middle); + if (middleX > x) { + to = middle; + toX = middleX; + if (toOutside = wrongLine) + toX += 1000; + dist = step; + } + else { + from = middle; + fromX = middleX; + fromOutside = wrongLine; + dist -= step; + } + } + } + + var measureText; + 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; + } + + function charWidth(display) { + if (display.cachedCharWidth != null) + return display.cachedCharWidth; + var anchor = elt("span", "x"); + var pre = elt("pre", [anchor]); + removeChildrenAndAdd(display.measure, pre); + var width = anchor.offsetWidth; + if (width > 2) + display.cachedCharWidth = width; + return width || 10; + } + + // OPERATIONS + + // Operations are used to wrap changes in such a way that each + // change won't have to update the cursor and display (which would + // be awkward, slow, and error-prone), but instead updates are + // batched and then all combined and executed at once. + + var nextOpId = 0; + function startOperation(cm) { + cm.curOp = { + // An array of ranges of lines that have to be updated. See + // updateDisplay. + changes: [], + updateInput: null, + userSelChange: null, + textChanged: null, + selectionChanged: false, + cursorActivity: false, + updateMaxLine: false, + updateScrollPos: false, + id: ++nextOpId + }; + if (!delayedCallbackDepth++) + delayedCallbacks = []; + } + + function endOperation(cm) { + var op = cm.curOp, doc = cm.doc, display = cm.display; + cm.curOp = null; + + if (op.updateMaxLine) + computeMaxLength(cm); + if (display.maxLineChanged && !cm.options.lineWrapping && display.maxLine) { + var width = measureLineWidth(cm, display.maxLine); + display.sizer.style.minWidth = Math.max(0, width + 3 + scrollerCutOff) + "px"; + display.maxLineChanged = false; + var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + display.sizer.offsetWidth - display.scroller.clientWidth); + if (maxScrollLeft < doc.scrollLeft && !op.updateScrollPos) + setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true); + } + var newScrollPos, updated; + if (op.updateScrollPos) { + newScrollPos = op.updateScrollPos; + } else if (op.selectionChanged && display.scroller.clientHeight) { // don't rescroll if not visible + var coords = cursorCoords(cm, doc.sel.head); + newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom); + } + if (op.changes.length || newScrollPos && newScrollPos.scrollTop != null) { + updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop); + if (cm.display.scroller.offsetHeight) + cm.doc.scrollTop = cm.display.scroller.scrollTop; + } + if (!updated && op.selectionChanged) + updateSelection(cm); + if (op.updateScrollPos) { + display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = newScrollPos.scrollTop; + display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = newScrollPos.scrollLeft; + alignHorizontally(cm); + if (op.scrollToPos) + scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos), op.scrollToPosMargin); + } else if (newScrollPos) { + scrollCursorIntoView(cm); + } + if (op.selectionChanged) + restartBlink(cm); + + if (cm.state.focused && op.updateInput) + resetInput(cm, op.userSelChange); + + 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 = 0; i < unhidden.length; ++i) + if (unhidden[i].lines.length) + signal(unhidden[i], "unhide"); + + var delayed; + if (!--delayedCallbackDepth) { + delayed = delayedCallbacks; + delayedCallbacks = null; + } + if (op.textChanged) + signal(cm, "change", cm, op.textChanged); + if (op.cursorActivity) + signal(cm, "cursorActivity", cm); + if (delayed) + for (var i = 0; i < delayed.length; ++i) + delayed[i](); + } + + // Wraps a function in an operation. Returns the wrapped function. + function operation(cm1, f) { + return function() { + var cm = cm1 || this, withOp = !cm.curOp; + if (withOp) + startOperation(cm); + try { + var result = f.apply(cm, arguments); + } + finally { + if (withOp) + endOperation(cm); + } + return result; + }; + } + function docOperation(f) { + return function() { + var withOp = this.cm && !this.cm.curOp, result; + if (withOp) + startOperation(this.cm); + try { + result = f.apply(this, arguments); + } + finally { + if (withOp) + endOperation(this.cm); + } + return result; + }; + } + function runInOp(cm, f) { + var withOp = !cm.curOp, result; + if (withOp) + startOperation(cm); + try { + result = f(); + } + finally { + if (withOp) + endOperation(cm); + } + return result; + } + + function regChange(cm, from, to, lendiff) { + if (from == null) + from = cm.doc.first; + if (to == null) + to = cm.doc.first + cm.doc.size; + cm.curOp.changes.push({from: from, to: to, diff: lendiff}); + } + + // INPUT HANDLING + + function slowPoll(cm) { + if (cm.display.pollingFast) + return; + cm.display.poll.set(cm.options.pollInterval, function() { + readInput(cm); + if (cm.state.focused) + slowPoll(cm); + }); + } + + function fastPoll(cm) { + var missed = false; + cm.display.pollingFast = true; + function p() { + var changed = readInput(cm); + if (!changed && !missed) { + missed = true; + cm.display.poll.set(60, p); + } + else { + cm.display.pollingFast = false; + slowPoll(cm); + } + } + cm.display.poll.set(20, p); + } + + // prevInput is a hack to work with IME. If we reset the textarea + // on every change, that breaks IME. So we look for changes + // compared to the previous content instead. (Modern browsers have + // events that indicate IME taking place, but these are not widely + // supported or compatible enough yet to rely on.) + function readInput(cm) { + var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc, sel = doc.sel; + if (!cm.state.focused || hasSelection(input) || isReadOnly(cm)) + return false; + var text = input.value; + if (text == prevInput && posEq(sel.from, sel.to)) + return false; + if (ie && !ie_lt9 && cm.display.inputHasSelection === text) { + resetInput(cm, true); + return false; + } + + var withOp = !cm.curOp; + if (withOp) + startOperation(cm); + sel.shift = false; + var same = 0, l = Math.min(prevInput.length, text.length); + while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) + ++same; + var from = sel.from, to = sel.to; + if (same < prevInput.length) + from = Pos(from.line, from.ch - (prevInput.length - same)); + else if (cm.state.overwrite && posEq(from, to) && !cm.state.pasteIncoming) + to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + (text.length - same))); + var updateInput = cm.curOp.updateInput; + makeChange(cm.doc, {from: from, to: to, text: splitLines(text.slice(same)), + origin: cm.state.pasteIncoming ? "paste" : "+input"}, "end"); + + cm.curOp.updateInput = updateInput; + if (text.length > 1000 || text.indexOf("\n") > -1) + input.value = cm.display.prevInput = ""; + else + cm.display.prevInput = text; + if (withOp) + endOperation(cm); + cm.state.pasteIncoming = false; + return true; + } + + function resetInput(cm, user) { + var minimal, selected, doc = cm.doc; + if (!posEq(doc.sel.from, doc.sel.to)) { + cm.display.prevInput = ""; + minimal = hasCopyEvent && + (doc.sel.to.line - doc.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000); + var content = minimal ? "-" : selected || cm.getSelection(); + cm.display.input.value = content; + if (cm.state.focused) + selectInput(cm.display.input); + if (ie && !ie_lt9) + cm.display.inputHasSelection = content; + } else if (user) { + cm.display.prevInput = cm.display.input.value = ""; + if (ie && !ie_lt9) + cm.display.inputHasSelection = null; + } + cm.display.inaccurateSelection = minimal; + } + + function focusInput(cm) { + if (cm.options.readOnly != "nocursor" && (!mobile || document.activeElement != cm.display.input)) + cm.display.input.focus(); + } + + function isReadOnly(cm) { + return cm.options.readOnly || cm.doc.cantEdit; + } + + // EVENT HANDLERS + + function registerEventHandlers(cm) { + var d = cm.display; + on(d.scroller, "mousedown", operation(cm, onMouseDown)); + if (ie) + on(d.scroller, "dblclick", operation(cm, function(e) { + var pos = posFromMouse(cm, e); + if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) + return; + e_preventDefault(e); + var word = findWordAt(getLine(cm.doc, pos.line).text, pos); + extendSelection(cm.doc, word.from, word.to); + })); + else + on(d.scroller, "dblclick", e_preventDefault); + on(d.lineSpace, "selectstart", function(e) { + if (!eventInWidget(d, e)) + e_preventDefault(e); + }); + // Gecko browsers fire contextmenu *after* opening the menu, at + // which point we can't mess with it anymore. Context menu is + // handled in onMouseDown for Gecko. + if (!captureMiddleClick) + on(d.scroller, "contextmenu", function(e) { + onContextMenu(cm, e); + }); + + on(d.scroller, "scroll", function() { + if (d.scroller.clientHeight) { + setScrollTop(cm, d.scroller.scrollTop); + setScrollLeft(cm, d.scroller.scrollLeft, true); + signal(cm, "scroll", cm); + } + }); + on(d.scrollbarV, "scroll", function() { + if (d.scroller.clientHeight) + setScrollTop(cm, d.scrollbarV.scrollTop); + }); + on(d.scrollbarH, "scroll", function() { + if (d.scroller.clientHeight) + setScrollLeft(cm, d.scrollbarH.scrollLeft); + }); + + on(d.scroller, "mousewheel", function(e) { + onScrollWheel(cm, e); + }); + on(d.scroller, "DOMMouseScroll", function(e) { + onScrollWheel(cm, e); + }); + + function reFocus() { + if (cm.state.focused) + setTimeout(bind(focusInput, cm), 0); + } + on(d.scrollbarH, "mousedown", reFocus); + on(d.scrollbarV, "mousedown", reFocus); + // Prevent wrapper from ever scrolling + on(d.wrapper, "scroll", function() { + d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; + }); + + function onResize() { + // Might be a text scaling operation, clear size caches. + d.cachedCharWidth = d.cachedTextHeight = null; + clearCaches(cm); + runInOp(cm, bind(regChange, cm)); + } + on(window, "resize", onResize); + // Above handler holds on to the editor and its data structures. + // Here we poll to unregister it when the editor is no longer in + // the document, so that it can be garbage-collected. + function unregister() { + for (var p = d.wrapper.parentNode; p && p != document.body; p = p.parentNode) { + } + if (p) + setTimeout(unregister, 5000); + else + off(window, "resize", onResize); + } + setTimeout(unregister, 5000); + + on(d.input, "keyup", operation(cm, function(e) { + if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) + return; + if (e.keyCode == 16) + cm.doc.sel.shift = false; + })); + on(d.input, "input", bind(fastPoll, cm)); + on(d.input, "keydown", operation(cm, onKeyDown)); + on(d.input, "keypress", operation(cm, onKeyPress)); + on(d.input, "focus", bind(onFocus, cm)); + on(d.input, "blur", bind(onBlur, cm)); + + function drag_(e) { + if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) + return; + e_stop(e); + } + if (cm.options.dragDrop) { + on(d.scroller, "dragstart", function(e) { + onDragStart(cm, e); + }); + on(d.scroller, "dragenter", drag_); + on(d.scroller, "dragover", drag_); + on(d.scroller, "drop", operation(cm, onDrop)); + } + on(d.scroller, "paste", function(e) { + if (eventInWidget(d, e)) + return; + focusInput(cm); + fastPoll(cm); + }); + on(d.input, "paste", function() { + cm.state.pasteIncoming = true; + fastPoll(cm); + }); + + function prepareCopy() { + if (d.inaccurateSelection) { + d.prevInput = ""; + d.inaccurateSelection = false; + d.input.value = cm.getSelection(); + selectInput(d.input); + } + } + on(d.input, "cut", prepareCopy); + on(d.input, "copy", prepareCopy); + + // Needed to handle Tab key in KHTML + if (khtml) + on(d.sizer, "mouseup", function() { + if (document.activeElement == d.input) + d.input.blur(); + focusInput(cm); + }); + } + + function eventInWidget(display, e) { + for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { + if (!n) + return true; + if (/\bCodeMirror-(?:line)?widget\b/.test(n.className) || + n.parentNode == display.sizer && n != display.mover) + return true; + } + } + + function posFromMouse(cm, e, liberal) { + var display = cm.display; + if (!liberal) { + var target = e_target(e); + if (target == display.scrollbarH || target == display.scrollbarH.firstChild || + target == display.scrollbarV || target == display.scrollbarV.firstChild || + target == display.scrollbarFiller || target == display.gutterFiller) + return null; + } + var x, y, space = getRect(display.lineSpace); + // Fails unpredictably on IE[67] when mouse is dragged around quickly. + try { + x = e.clientX; + y = e.clientY; + } catch (e) { + return null; + } + return coordsChar(cm, x - space.left, y - space.top); + } + + var lastClick, lastDoubleClick; + function onMouseDown(e) { + var cm = this, display = cm.display, doc = cm.doc, sel = doc.sel; + sel.shift = e.shiftKey; + + if (eventInWidget(display, e)) { + if (!webkit) { + display.scroller.draggable = false; + setTimeout(function() { + display.scroller.draggable = true; + }, 100); + } + return; + } + if (clickInGutter(cm, e)) + return; + var start = posFromMouse(cm, e); + + switch (e_button(e)) { + case 3: + if (captureMiddleClick) + onContextMenu.call(cm, cm, e); + return; + case 2: + if (start) + extendSelection(cm.doc, start); + setTimeout(bind(focusInput, cm), 20); + e_preventDefault(e); + return; + } + // For button 1, if it was clicked inside the editor + // (posFromMouse returning non-null), we have to adjust the + // selection. + if (!start) { + if (e_target(e) == display.scroller) + e_preventDefault(e); + return; + } + + if (!cm.state.focused) + onFocus(cm); + + var now = +new Date, type = "single"; + if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) { + type = "triple"; + e_preventDefault(e); + setTimeout(bind(focusInput, cm), 20); + selectLine(cm, start.line); + } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) { + type = "double"; + lastDoubleClick = {time: now, pos: start}; + e_preventDefault(e); + var word = findWordAt(getLine(doc, start.line).text, start); + extendSelection(cm.doc, word.from, word.to); + } else { + lastClick = {time: now, pos: start}; + } + + var last = start; + if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) && + !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") { + 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); + extendSelection(cm.doc, start); + focusInput(cm); + } + }); + // Let the drag handler handle this. + if (webkit) + display.scroller.draggable = true; + cm.state.draggingText = dragEnd; + // IE's approach to draggable + if (display.scroller.dragDrop) + display.scroller.dragDrop(); + on(document, "mouseup", dragEnd); + on(display.scroller, "drop", dragEnd); + return; + } + e_preventDefault(e); + if (type == "single") + extendSelection(cm.doc, clipPos(doc, start)); + + var startstart = sel.from, startend = sel.to, lastPos = start; + + function doSelect(cur) { + if (posEq(lastPos, cur)) + return; + lastPos = cur; + + if (type == "single") { + extendSelection(cm.doc, clipPos(doc, start), cur); + return; + } + + startstart = clipPos(doc, startstart); + startend = clipPos(doc, startend); + if (type == "double") { + var word = findWordAt(getLine(doc, cur.line).text, cur); + if (posLess(cur, startstart)) + extendSelection(cm.doc, word.from, startend); + else + extendSelection(cm.doc, startstart, word.to); + } else if (type == "triple") { + if (posLess(cur, startstart)) + extendSelection(cm.doc, startend, clipPos(doc, Pos(cur.line, 0))); + else + extendSelection(cm.doc, startstart, clipPos(doc, Pos(cur.line + 1, 0))); + } + } + + var editorSize = getRect(display.wrapper); + // 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); + if (!cur) + return; + if (!posEq(cur, last)) { + if (!cm.state.focused) + onFocus(cm); + last = cur; + doSelect(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) { + counter = Infinity; + var cur = posFromMouse(cm, e); + if (cur) + doSelect(cur); + e_preventDefault(e); + focusInput(cm); + off(document, "mousemove", move); + off(document, "mouseup", up); + } + + var move = operation(cm, function(e) { + if (!ie && !e_button(e)) + done(e); + else + extend(e); + }); + var up = operation(cm, done); + on(document, "mousemove", move); + on(document, "mouseup", up); + } + + function onDrop(e) { + var cm = this; + if (eventInWidget(cm.display, e) || (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e)))) + return; + e_preventDefault(e); + var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; + if (!pos || isReadOnly(cm)) + return; + if (files && files.length && window.FileReader && window.File) { + var n = files.length, text = Array(n), read = 0; + var loadFile = function(file, i) { + var reader = new FileReader; + reader.onload = function() { + text[i] = reader.result; + if (++read == n) { + pos = clipPos(cm.doc, pos); + makeChange(cm.doc, {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}, "around"); + } + }; + reader.readAsText(file); + }; + for (var i = 0; i < n; ++i) + loadFile(files[i], i); + } else { + // Don't do a replace if the drop happened inside of the selected text. + if (cm.state.draggingText && !(posLess(pos, cm.doc.sel.from) || posLess(cm.doc.sel.to, pos))) { + cm.state.draggingText(e); + // Ensure the editor is re-focused + setTimeout(bind(focusInput, cm), 20); + return; + } + try { + var text = e.dataTransfer.getData("Text"); + if (text) { + var curFrom = cm.doc.sel.from, curTo = cm.doc.sel.to; + setSelection(cm.doc, pos, pos); + if (cm.state.draggingText) + replaceRange(cm.doc, "", curFrom, curTo, "paste"); + cm.replaceSelection(text, null, "paste"); + focusInput(cm); + onFocus(cm); + } + } + catch (e) { + } + } + } + + function clickInGutter(cm, e) { + var display = cm.display; + try { + var mX = e.clientX, mY = e.clientY; + } + catch (e) { + return false; + } + + if (mX >= Math.floor(getRect(display.gutters).right)) + return false; + e_preventDefault(e); + if (!hasHandler(cm, "gutterClick")) + return true; + + var lineBox = getRect(display.lineDiv); + if (mY > lineBox.bottom) + return true; + mY -= lineBox.top - display.viewOffset; + + for (var i = 0; i < cm.options.gutters.length; ++i) { + var g = display.gutters.childNodes[i]; + if (g && getRect(g).right >= mX) { + var line = lineAtHeight(cm.doc, mY); + var gutter = cm.options.gutters[i]; + signalLater(cm, "gutterClick", cm, line, gutter, e); + break; + } + } + return true; + } + + function onDragStart(cm, e) { + if (ie && !cm.state.draggingText) { + e_stop(e); + return; + } + if (eventInWidget(cm.display, e)) + return; + + var txt = cm.getSelection(); + e.dataTransfer.setData("Text", txt); + + // 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) { + var img = elt("img", null, null, "position: fixed; left: 0; top: 0;"); + if (opera) { + 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; + } + if (safari) { + if (cm.display.dragImg) { + img = cm.display.dragImg; + } else { + cm.display.dragImg = img; + img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="; + cm.display.wrapper.appendChild(img); + } + } + e.dataTransfer.setDragImage(img, 0, 0); + if (opera) + img.parentNode.removeChild(img); + } + } + + function setScrollTop(cm, val) { + if (Math.abs(cm.doc.scrollTop - val) < 2) + return; + cm.doc.scrollTop = val; + if (!gecko) + updateDisplay(cm, [], val); + if (cm.display.scroller.scrollTop != val) + cm.display.scroller.scrollTop = val; + if (cm.display.scrollbarV.scrollTop != val) + cm.display.scrollbarV.scrollTop = val; + if (gecko) + updateDisplay(cm, []); + } + 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; + if (cm.display.scrollbarH.scrollLeft != val) + cm.display.scrollbarH.scrollLeft = 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, 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 onScrollWheel(cm, 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; + + var display = cm.display, scroll = display.scroller; + // Quit if there's nothing to scroll here + if (!(dx && scroll.scrollWidth > scroll.clientWidth || + dy && scroll.scrollHeight > scroll.clientHeight)) + 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) { + for (var cur = e.target; cur != scroll; cur = cur.parentNode) { + if (cur.lineObj) { + cm.display.currentWheelTarget = cur; + break; + } + } + } + + // 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 && !opera && wheelPixelsPerUnit != null) { + if (dy) + 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))); + e_preventDefault(e); + display.wheelStartX = null; // Abort measurement, if in progress + return; + } + + 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); + updateDisplay(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; + } + } + } + + 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 + if (cm.display.pollingFast && readInput(cm)) + cm.display.pollingFast = false; + var doc = cm.doc, prevShift = doc.sel.shift, done = false; + try { + if (isReadOnly(cm)) + cm.state.suppressEdits = true; + if (dropShift) + doc.sel.shift = false; + done = bound(cm) != Pass; + } finally { + doc.sel.shift = prevShift; + cm.state.suppressEdits = false; + } + return done; + } + + function allKeyMaps(cm) { + var maps = cm.state.keyMaps.slice(0); + if (cm.options.extraKeys) + maps.push(cm.options.extraKeys); + maps.push(cm.options.keyMap); + return maps; + } + + var maybeTransition; + function handleKeyBinding(cm, e) { + // Handle auto keymap transitions + var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto; + clearTimeout(maybeTransition); + if (next && !isModifierKey(e)) + maybeTransition = setTimeout(function() { + if (getKeyMap(cm.options.keyMap) == startMap) + cm.options.keyMap = (next.call ? next.call(null, cm) : next); + }, 50); + + var name = keyName(e, true), handled = false; + if (!name) + return false; + var keymaps = allKeyMaps(cm); + + if (e.shiftKey) { + // 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-'. + handled = lookupKey("Shift-" + name, keymaps, function(b) { + return doHandleBinding(cm, b, true); + }) + || lookupKey(name, keymaps, function(b) { + if (typeof b == "string" && /^go[A-Z]/.test(b)) + return doHandleBinding(cm, b); + }); + } else { + handled = lookupKey(name, keymaps, function(b) { + return doHandleBinding(cm, b); + }); + } + if (handled == "stop") + handled = false; + + if (handled) { + e_preventDefault(e); + restartBlink(cm); + if (ie_lt9) { + e.oldKeyCode = e.keyCode; + e.keyCode = 0; + } + } + return handled; + } + + function handleCharBinding(cm, e, ch) { + var handled = lookupKey("'" + ch + "'", allKeyMaps(cm), + function(b) { + return doHandleBinding(cm, b, true); + }); + if (handled) { + e_preventDefault(e); + restartBlink(cm); + } + return handled; + } + + var lastStoppedKey = null; + function onKeyDown(e) { + var cm = this; + if (!cm.state.focused) + onFocus(cm); + if (ie && e.keyCode == 27) { + e.returnValue = false; + } + if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) + return; + var code = e.keyCode; + // IE does strange things with escape. + cm.doc.sel.shift = code == 16 || e.shiftKey; + // First give onKeyEvent option a chance to handle this. + var handled = handleKeyBinding(cm, e); + if (opera) { + 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(""); + } + } + + function onKeyPress(e) { + var cm = this; + if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) + return; + var keyCode = e.keyCode, charCode = e.charCode; + if (opera && keyCode == lastStoppedKey) { + lastStoppedKey = null; + e_preventDefault(e); + return; + } + if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) + return; + var ch = String.fromCharCode(charCode == null ? keyCode : charCode); + if (this.options.electricChars && this.doc.mode.electricChars && + this.options.smartIndent && !isReadOnly(this) && + this.doc.mode.electricChars.indexOf(ch) > -1) + setTimeout(operation(cm, function() { + indentLine(cm, cm.doc.sel.to.line, "smart"); + }), 75); + if (handleCharBinding(cm, e, ch)) + return; + if (ie && !ie_lt9) + cm.display.inputHasSelection = null; + fastPoll(cm); + } + + function onFocus(cm) { + if (cm.options.readOnly == "nocursor") + return; + if (!cm.state.focused) { + signal(cm, "focus", cm); + cm.state.focused = true; + if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1) + cm.display.wrapper.className += " CodeMirror-focused"; + resetInput(cm, true); + } + slowPoll(cm); + restartBlink(cm); + } + function onBlur(cm) { + if (cm.state.focused) { + signal(cm, "blur", cm); + cm.state.focused = false; + cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-focused", ""); + } + clearInterval(cm.display.blinker); + setTimeout(function() { + if (!cm.state.focused) + cm.doc.sel.shift = false; + }, 150); + } + + var detectingSelectAll; + function onContextMenu(cm, e) { + var display = cm.display, sel = cm.doc.sel; + if (eventInWidget(display, e)) + return; + + var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; + if (!pos || opera) + return; // Opera is difficult. + if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)) + operation(cm, setSelection)(cm.doc, pos, pos); + + var oldCSS = display.input.style.cssText; + display.inputDiv.style.position = "absolute"; + display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) + + "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; outline: none;" + + "border-width: 0; outline: none; overflow: hidden; opacity: .05; -ms-opacity: .05; filter: alpha(opacity=5);"; + focusInput(cm); + resetInput(cm, true); + // Adds "Select all" to context menu in FF + if (posEq(sel.from, sel.to)) + display.input.value = display.prevInput = " "; + + function prepareSelectAllHack() { + if (display.input.selectionStart != null) { + var extval = display.input.value = " " + (posEq(sel.from, sel.to) ? "" : display.input.value); + display.prevInput = " "; + display.input.selectionStart = 1; + display.input.selectionEnd = extval.length; + } + } + function rehide() { + display.inputDiv.style.position = "relative"; + display.input.style.cssText = oldCSS; + if (ie_lt9) + display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos; + slowPoll(cm); + + // Try to detect the user choosing select-all + if (display.input.selectionStart != null) { + if (!ie || ie_lt9) + prepareSelectAllHack(); + clearTimeout(detectingSelectAll); + var i = 0, poll = function() { + if (display.prevInput == " " && display.input.selectionStart == 0) + operation(cm, commands.selectAll)(cm); + else if (i++ < 10) + detectingSelectAll = setTimeout(poll, 500); + else + resetInput(cm); + }; + detectingSelectAll = setTimeout(poll, 200); + } + } + + if (ie && !ie_lt9) + prepareSelectAllHack(); + if (captureMiddleClick) { + e_stop(e); + var mouseup = function() { + off(window, "mouseup", mouseup); + setTimeout(rehide, 20); + }; + on(window, "mouseup", mouseup); + } else { + setTimeout(rehide, 50); + } + } + + // UPDATING + + 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)); + } + + // Make sure a position will be valid after the given change. + function clipPostChange(doc, change, pos) { + if (!posLess(change.from, pos)) + return clipPos(doc, pos); + var diff = (change.text.length - 1) - (change.to.line - change.from.line); + if (pos.line > change.to.line + diff) { + var preLine = pos.line - diff, lastLine = doc.first + doc.size - 1; + if (preLine > lastLine) + return Pos(lastLine, getLine(doc, lastLine).text.length); + return clipToLen(pos, getLine(doc, preLine).text.length); + } + if (pos.line == change.to.line + diff) + return clipToLen(pos, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0) + + getLine(doc, change.to.line).text.length - change.to.ch); + var inside = pos.line - change.from.line; + return clipToLen(pos, change.text[inside].length + (inside ? 0 : change.from.ch)); + } + + // Hint can be null|"end"|"start"|"around"|{anchor,head} + function computeSelAfterChange(doc, change, hint) { + if (hint && typeof hint == "object") // Assumed to be {anchor, head} object + return {anchor: clipPostChange(doc, change, hint.anchor), + head: clipPostChange(doc, change, hint.head)}; + + if (hint == "start") + return {anchor: change.from, head: change.from}; + + var end = changeEnd(change); + if (hint == "around") + return {anchor: change.from, head: end}; + if (hint == "end") + return {anchor: end, head: end}; + + // hint is null, leave the selection alone as much as possible + var adjustPos = function(pos) { + if (posLess(pos, change.from)) + return pos; + if (!posLess(change.to, pos)) + return end; + + var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch; + if (pos.line == change.to.line) + ch += end.ch - change.to.ch; + return Pos(line, ch); + }; + return {anchor: adjustPos(doc.sel.anchor), head: adjustPos(doc.sel.head)}; + } + + function filterChange(doc, change) { + var obj = { + canceled: false, + from: change.from, + to: change.to, + text: change.text, + origin: change.origin, + update: function(from, to, text, origin) { + if (from) + this.from = clipPos(doc, from); + if (to) + this.to = clipPos(doc, to); + if (text) + this.text = text; + if (origin !== undefined) + this.origin = origin; + }, + cancel: function() { + this.canceled = true; + } + }; + 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}; + } + + // Replace the range from from to to by the strings in replacement. + // change is a {from, to, text [, origin]} object + function makeChange(doc, change, selUpdate, ignoreReadOnly) { + if (doc.cm) { + if (!doc.cm.curOp) + return operation(doc.cm, makeChange)(doc, change, selUpdate, ignoreReadOnly); + if (doc.cm.state.suppressEdits) + return; + } + + if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { + change = filterChange(doc, change); + 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 >= 1; --i) + makeChangeNoReadonly(doc, {from: split[i].from, to: split[i].to, text: [""]}); + if (split.length) + makeChangeNoReadonly(doc, {from: split[0].from, to: split[0].to, text: change.text}, selUpdate); + } else { + makeChangeNoReadonly(doc, change, selUpdate); + } + } + + function makeChangeNoReadonly(doc, change, selUpdate) { + var selAfter = computeSelAfterChange(doc, change, selUpdate); + addToHistory(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)); + }); + } + + function makeChangeFromHistory(doc, type) { + if (doc.cm && doc.cm.state.suppressEdits) + return; + + var hist = doc.history; + var event = (type == "undo" ? hist.done : hist.undone).pop(); + if (!event) + return; + hist.dirtyCounter += type == "undo" ? -1 : 1; + + var anti = {changes: [], anchorBefore: event.anchorAfter, headBefore: event.headAfter, + anchorAfter: event.anchorBefore, headAfter: event.headBefore}; + (type == "undo" ? hist.undone : hist.done).push(anti); + + for (var i = event.changes.length - 1; i >= 0; --i) { + var change = event.changes[i]; + change.origin = type; + anti.changes.push(historyChangeFromChange(doc, change)); + + var after = i ? computeSelAfterChange(doc, change, null) + : {anchor: event.anchorBefore, head: event.headBefore}; + makeChangeSingleDoc(doc, change, after, mergeOldSpans(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, mergeOldSpans(doc, change)); + }); + } + } + + function shiftDoc(doc, distance) { + function shiftPos(pos) { + return Pos(pos.line + distance, pos.ch); + } + doc.first += distance; + if (doc.cm) + regChange(doc.cm, doc.first, doc.first, distance); + doc.sel.head = shiftPos(doc.sel.head); + doc.sel.anchor = shiftPos(doc.sel.anchor); + doc.sel.from = shiftPos(doc.sel.from); + doc.sel.to = shiftPos(doc.sel.to); + } + + 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, null); + if (doc.cm) + makeChangeSingleDocInEditor(doc.cm, change, spans, selAfter); + else + updateDoc(doc, change, spans, selAfter); + } + + function makeChangeSingleDocInEditor(cm, change, spans, selAfter) { + 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(doc, getLine(doc, from.line))); + doc.iter(checkWidthStart, to.line + 1, function(line) { + if (line == display.maxLine) { + recomputeMaxLength = true; + return true; + } + }); + } + + if (!posLess(doc.sel.head, change.from) && !posLess(change.to, doc.sel.head)) + cm.curOp.cursorActivity = true; + + updateDoc(doc, change, spans, selAfter, estimateHeight(cm)); + + if (!cm.options.lineWrapping) { + doc.iter(checkWidthStart, from.line + change.text.length, function(line) { + var len = lineLength(doc, 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 + regChange(cm, from.line, to.line + 1, lendiff); + + if (hasHandler(cm, "change")) { + var changeObj = {from: from, to: to, + text: change.text, + removed: change.removed, + origin: change.origin}; + if (cm.curOp.textChanged) { + for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) { + } + cur.next = changeObj; + } else + cm.curOp.textChanged = changeObj; + } + } + + function replaceRange(doc, code, from, to, origin) { + if (!to) + to = from; + if (posLess(to, from)) { + var tmp = to; + to = from; + from = tmp; + } + if (typeof code == "string") + code = splitLines(code); + makeChange(doc, {from: from, to: to, text: code, origin: origin}, null); + } + + // POSITION OBJECT + + function Pos(line, ch) { + if (!(this instanceof Pos)) + return new Pos(line, ch); + this.line = line; + this.ch = ch; + } + CodeMirror.Pos = Pos; + + function posEq(a, b) { + return a.line == b.line && a.ch == b.ch; + } + function posLess(a, b) { + return a.line < b.line || (a.line == b.line && a.ch < b.ch); + } + function copyPos(x) { + return Pos(x.line, x.ch); + } + + // SELECTION + + 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 isLine(doc, l) { + return l >= doc.first && l < doc.first + doc.size; + } + + // If shift is held, this will move the selection anchor. Otherwise, + // it'll set the whole selection. + function extendSelection(doc, pos, other, bias) { + if (doc.sel.shift || doc.sel.extend) { + var anchor = doc.sel.anchor; + if (other) { + var posBefore = posLess(pos, anchor); + if (posBefore != posLess(other, anchor)) { + anchor = pos; + pos = other; + } else if (posBefore != posLess(pos, other)) { + pos = other; + } + } + setSelection(doc, anchor, pos, bias); + } else { + setSelection(doc, pos, other || pos, bias); + } + if (doc.cm) + doc.cm.curOp.userSelChange = true; + } + + function filterSelectionChange(doc, anchor, head) { + var obj = {anchor: anchor, head: head}; + signal(doc, "beforeSelectionChange", doc, obj); + if (doc.cm) + signal(doc.cm, "beforeSelectionChange", doc.cm, obj); + obj.anchor = clipPos(doc, obj.anchor); + obj.head = clipPos(doc, obj.head); + return obj; + } + + // Update the selection. Last two args are only used by + // updateDoc, since they have to be expressed in the line + // numbers before the update. + function setSelection(doc, anchor, head, bias, checkAtomic) { + if (!checkAtomic && hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) { + var filtered = filterSelectionChange(doc, anchor, head); + head = filtered.head; + anchor = filtered.anchor; + } + + var sel = doc.sel; + sel.goalColumn = null; + // Skip over atomic spans. + if (checkAtomic || !posEq(anchor, sel.anchor)) + anchor = skipAtomic(doc, anchor, bias, checkAtomic != "push"); + if (checkAtomic || !posEq(head, sel.head)) + head = skipAtomic(doc, head, bias, checkAtomic != "push"); + + if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) + return; + + sel.anchor = anchor; + sel.head = head; + var inv = posLess(head, anchor); + sel.from = inv ? head : anchor; + sel.to = inv ? anchor : head; + + if (doc.cm) + doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = + doc.cm.curOp.cursorActivity = true; + + signalLater(doc, "cursorActivity", doc); + } + + function reCheckSelection(cm) { + setSelection(cm.doc, cm.doc.sel.from, cm.doc.sel.to, null, "push"); + } + + function skipAtomic(doc, pos, bias, mayClear) { + var flipped = false, curPos = pos; + var dir = bias || 1; + doc.cantEdit = false; + search: for (; ; ) { + var line = getLine(doc, curPos.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 <= curPos.ch : sp.from < curPos.ch)) && + (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) { + if (mayClear) { + signal(m, "beforeCursorEnter"); + if (m.explicitlyCleared) { + if (!line.markedSpans) + break; + else { + --i; + continue; + } + } + } + if (!m.atomic) + continue; + var newPos = m.find()[dir < 0 ? "from" : "to"]; + if (posEq(newPos, curPos)) { + newPos.ch += dir; + if (newPos.ch < 0) { + if (newPos.line > doc.first) + newPos = clipPos(doc, Pos(newPos.line - 1)); + else + newPos = null; + } else if (newPos.ch > line.text.length) { + if (newPos.line < doc.first + doc.size - 1) + newPos = Pos(newPos.line + 1, 0); + else + newPos = null; + } + if (!newPos) { + if (flipped) { + // Driven in a corner -- no valid cursor position found at all + // -- try again *with* clearing, if we didn't already + if (!mayClear) + return skipAtomic(doc, pos, bias, true); + // Otherwise, turn off editing until further notice, and return the start of the doc + doc.cantEdit = true; + return Pos(doc.first, 0); + } + flipped = true; + newPos = pos; + dir = -dir; + } + } + curPos = newPos; + continue search; + } + } + } + return curPos; + } + } + + // SCROLLING + + function scrollCursorIntoView(cm) { + var coords = scrollPosIntoView(cm, cm.doc.sel.head, cm.options.cursorScrollMargin); + if (!cm.state.focused) + return; + var display = cm.display, box = getRect(display.sizer), doScroll = null, pTop = paddingTop(cm.display); + if (coords.top + pTop + box.top < 0) + doScroll = true; + else if (coords.bottom + pTop + box.top > (window.innerHeight || document.documentElement.clientHeight)) + doScroll = false; + if (doScroll != null && !phantom) { + var hidden = display.cursor.style.display == "none"; + if (hidden) { + display.cursor.style.display = ""; + display.cursor.style.left = coords.left + "px"; + display.cursor.style.top = (coords.top - display.viewOffset) + "px"; + } + display.cursor.scrollIntoView(doScroll); + if (hidden) + display.cursor.style.display = "none"; + } + } + + function scrollPosIntoView(cm, pos, margin) { + if (margin == null) + margin = 0; + for (; ; ) { + var changed = false, coords = cursorCoords(cm, pos); + var scrollPos = calculateScrollPos(cm, coords.left, coords.top - margin, coords.left, coords.bottom + margin); + 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) + return coords; + } + } + + function scrollIntoView(cm, x1, y1, x2, y2) { + var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2); + if (scrollPos.scrollTop != null) + setScrollTop(cm, scrollPos.scrollTop); + if (scrollPos.scrollLeft != null) + setScrollLeft(cm, scrollPos.scrollLeft); + } + + function calculateScrollPos(cm, x1, y1, x2, y2) { + var display = cm.display, pt = paddingTop(display); + y1 += pt; + y2 += pt; + if (y1 < 0) + y1 = 0; + var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {}; + var docBottom = cm.doc.height + paddingVert(display); + var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10; + if (y1 < screentop) { + result.scrollTop = atTop ? 0 : y1; + } else if (y2 > screentop + screen) { + var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen); + if (newTop != screentop) + result.scrollTop = newTop; + } + + var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft; + x1 += display.gutters.offsetWidth; + x2 += display.gutters.offsetWidth; + var gutterw = display.gutters.offsetWidth; + var atLeft = x1 < gutterw + 10; + if (x1 < screenleft + gutterw || atLeft) { + if (atLeft) + x1 = 0; + result.scrollLeft = Math.max(0, x1 - 10 - gutterw); + } else if (x2 > screenw + screenleft - 3) { + result.scrollLeft = x2 + 10 - screenw; + } + return result; + } + + function updateScrollPos(cm, left, top) { + cm.curOp.updateScrollPos = {scrollLeft: left == null ? cm.doc.scrollLeft : left, + scrollTop: top == null ? cm.doc.scrollTop : top}; + } + + function addToScrollPos(cm, left, top) { + var pos = cm.curOp.updateScrollPos || (cm.curOp.updateScrollPos = {scrollLeft: cm.doc.scrollLeft, scrollTop: cm.doc.scrollTop}); + var scroll = cm.display.scroller; + pos.scrollTop = Math.max(0, Math.min(scroll.scrollHeight - scroll.clientHeight, pos.scrollTop + top)); + pos.scrollLeft = Math.max(0, Math.min(scroll.scrollWidth - scroll.clientWidth, pos.scrollLeft + left)); + } + + // API UTILITIES + + function indentLine(cm, n, how, aggressive) { + var doc = cm.doc; + if (!how) + how = "add"; + if (how == "smart") { + if (!cm.doc.mode.indent) + how = "prev"; + else + var state = getStateBefore(cm, n); + } + + var tabSize = cm.options.tabSize; + var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize); + var curSpaceString = line.text.match(/^\s*/)[0], indentation; + if (how == "smart") { + indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text); + if (indentation == Pass) { + 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; + } + 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(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); + line.stateAfter = null; + } + + function changeLine(cm, handle, op) { + var no = handle, line = handle, doc = cm.doc; + if (typeof handle == "number") + line = getLine(doc, clipLine(doc, handle)); + else + no = lineNo(handle); + if (no == null) + return null; + if (op(line, no)) + regChange(cm, no, no + 1); + else + return null; + return line; + } + + function findPosH(doc, pos, dir, unit, visually) { + var line = pos.line, ch = pos.ch, origDir = dir; + var lineObj = getLine(doc, line); + var possible = true; + function findNextLine() { + var l = line + dir; + if (l < doc.first || l >= doc.first + doc.size) + return (possible = false); + line = l; + return lineObj = getLine(doc, l); + } + function moveOnce(boundToLine) { + var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true); + if (next == null) { + if (!boundToLine && findNextLine()) { + if (visually) + ch = (dir < 0 ? lineRight : lineLeft)(lineObj); + else + ch = dir < 0 ? lineObj.text.length : 0; + } else + return (possible = false); + } else + ch = 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"; + for (var first = true; ; first = false) { + if (dir < 0 && !moveOnce(!first)) + break; + var cur = lineObj.text.charAt(ch) || "\n"; + var type = isWordChar(cur) ? "w" + : !group ? null + : /\s/.test(cur) ? null + : "p"; + if (sawType && sawType != type) { + if (dir < 0) { + dir = 1; + moveOnce(); + } + break; + } + if (type) + sawType = type; + if (dir > 0 && !moveOnce(!first)) + break; + } + } + var result = skipAtomic(doc, Pos(line, ch), origDir, true); + if (!possible) + result.hitSide = true; + return result; + } + + 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); + y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display)); + } else if (unit == "line") { + y = dir > 0 ? pos.bottom + 3 : pos.top - 3; + } + for (; ; ) { + var 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; + } + + function findWordAt(line, pos) { + var start = pos.ch, end = pos.ch; + if (line) { + if (pos.after === false || end == line.length) + --start; + else + ++end; + var startChar = line.charAt(start); + var check = isWordChar(startChar) ? isWordChar + : /\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 {from: Pos(pos.line, start), to: Pos(pos.line, end)}; + } + + function selectLine(cm, line) { + extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0))); + } + + // PROTOTYPE + + // The publicly visible API. Note that operation(null, f) means + // 'wrap f in an operation, performed on its `this` parameter' + + CodeMirror.prototype = { + constructor: CodeMirror, + focus: function() { + window.focus(); + focusInput(this); + onFocus(this); + fastPoll(this); + }, + 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); + }, + getOption: function(option) { + return this.options[option]; + }, + getDoc: function() { + return this.doc; + }, + addKeyMap: function(map, bottom) { + this.state.keyMaps[bottom ? "push" : "unshift"](map); + }, + removeKeyMap: function(map) { + var maps = this.state.keyMaps; + for (var i = 0; i < maps.length; ++i) + if ((typeof map == "string" ? maps[i].name : maps[i]) == map) { + maps.splice(i, 1); + return true; + } + }, + addOverlay: operation(null, function(spec, options) { + var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec); + if (mode.startState) + throw new Error("Overlays may not be stateful."); + this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque}); + this.state.modeGen++; + regChange(this); + }), + removeOverlay: operation(null, function(spec) { + var overlays = this.state.overlays; + for (var i = 0; i < overlays.length; ++i) { + if (overlays[i].modeSpec == spec) { + overlays.splice(i, 1); + this.state.modeGen++; + regChange(this); + return; + } + } + }), + indentLine: operation(null, function(n, dir, aggressive) { + if (typeof dir != "string") { + 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: operation(null, function(how) { + var sel = this.doc.sel; + if (posEq(sel.from, sel.to)) + return indentLine(this, sel.from.line, how); + var e = sel.to.line - (sel.to.ch ? 0 : 1); + for (var i = sel.from.line; i <= e; ++i) + indentLine(this, i, how); + }), + // Fetch the parser token for a given character. Useful for hacks + // that want to inspect the mode state (say, for completion). + getTokenAt: function(pos) { + var doc = this.doc; + pos = clipPos(doc, pos); + var state = getStateBefore(this, pos.line), mode = this.doc.mode; + var line = getLine(doc, pos.line); + var stream = new StringStream(line.text, this.options.tabSize); + while (stream.pos < pos.ch && !stream.eol()) { + stream.start = stream.pos; + var style = mode.token(stream, state); + } + return {start: stream.start, + end: stream.pos, + string: stream.current(), + className: style || null, // Deprecated, use 'type' instead + type: style || null, + state: state}; + }, + getStateAfter: function(line) { + var doc = this.doc; + line = clipLine(doc, line == null ? doc.first + doc.size - 1 : line); + return getStateBefore(this, line + 1); + }, + cursorCoords: function(start, mode) { + var pos, sel = this.doc.sel; + if (start == null) + pos = sel.head; + else if (typeof start == "object") + pos = clipPos(this.doc, start); + else + pos = start ? sel.from : sel.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); + }, + defaultTextHeight: function() { + return textHeight(this.display); + }, + defaultCharWidth: function() { + return charWidth(this.display); + }, + setGutterMarker: operation(null, function(line, gutterID, value) { + return changeLine(this, line, function(line) { + var markers = line.gutterMarkers || (line.gutterMarkers = {}); + markers[gutterID] = value; + if (!value && isEmpty(markers)) + line.gutterMarkers = null; + return true; + }); + }), + clearGutter: operation(null, function(gutterID) { + var cm = this, doc = cm.doc, i = doc.first; + doc.iter(function(line) { + if (line.gutterMarkers && line.gutterMarkers[gutterID]) { + line.gutterMarkers[gutterID] = null; + regChange(cm, i, i + 1); + if (isEmpty(line.gutterMarkers)) + line.gutterMarkers = null; + } + ++i; + }); + }), + addLineClass: operation(null, function(handle, where, cls) { + return changeLine(this, handle, function(line) { + var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; + if (!line[prop]) + line[prop] = cls; + else if (new RegExp("\\b" + cls + "\\b").test(line[prop])) + return false; + else + line[prop] += " " + cls; + return true; + }); + }), + removeLineClass: operation(null, function(handle, where, cls) { + return changeLine(this, handle, function(line) { + var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; + var cur = line[prop]; + if (!cur) + return false; + else if (cls == null) + line[prop] = null; + else { + var upd = cur.replace(new RegExp("^" + cls + "\\b\\s*|\\s*\\b" + cls + "\\b"), ""); + if (upd == cur) + return false; + line[prop] = upd || null; + } + return true; + }); + }), + addLineWidget: operation(null, function(handle, node, options) { + return addLineWidget(this, handle, node, options); + }), + removeLineWidget: function(widget) { + widget.clear(); + }, + lineInfo: function(line) { + if (typeof line == "number") { + if (!isLine(this.doc, line)) + return null; + var n = line; + line = getLine(this.doc, line); + if (!line) + return null; + } else { + var 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}; + }, + getViewport: function() { + return {from: this.display.showingFrom, to: this.display.showingTo}; + }, + 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"; + 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 + paddingTop(display)) + "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, top, left + node.offsetWidth, top + node.offsetHeight); + }, + triggerOnKeyDown: operation(null, onKeyDown), + execCommand: function(cmd) { + return commands[cmd](this); + }, + findPosH: function(from, amount, unit, visually) { + var dir = 1; + if (amount < 0) { + dir = -1; + amount = -amount; + } + for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { + cur = findPosH(this.doc, cur, dir, unit, visually); + if (cur.hitSide) + break; + } + return cur; + }, + moveH: operation(null, function(dir, unit) { + var sel = this.doc.sel, pos; + if (sel.shift || sel.extend || posEq(sel.from, sel.to)) + pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually); + else + pos = dir < 0 ? sel.from : sel.to; + extendSelection(this.doc, pos, pos, dir); + }), + deleteH: operation(null, function(dir, unit) { + var sel = this.doc.sel; + if (!posEq(sel.from, sel.to)) + replaceRange(this.doc, "", sel.from, sel.to, "+delete"); + else + replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete"); + this.curOp.userSelChange = true; + }), + findPosV: function(from, amount, unit, goalColumn) { + var dir = 1, x = goalColumn; + if (amount < 0) { + dir = -1; + amount = -amount; + } + for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { + var coords = cursorCoords(this, cur, "div"); + if (x == null) + x = coords.left; + else + coords.left = x; + cur = findPosV(this, coords, dir, unit); + if (cur.hitSide) + break; + } + return cur; + }, + moveV: operation(null, function(dir, unit) { + var sel = this.doc.sel; + var pos = cursorCoords(this, sel.head, "div"); + if (sel.goalColumn != null) + pos.left = sel.goalColumn; + var target = findPosV(this, pos, dir, unit); + + if (unit == "page") + addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top); + extendSelection(this.doc, target, target, dir); + sel.goalColumn = pos.left; + }), + toggleOverwrite: function(value) { + if (value != null && value == this.state.overwrite) + return; + if (this.state.overwrite = !this.state.overwrite) + this.display.cursor.className += " CodeMirror-overwrite"; + else + this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", ""); + }, + hasFocus: function() { + return this.state.focused; + }, + scrollTo: operation(null, function(x, y) { + updateScrollPos(this, x, y); + }), + getScrollInfo: function() { + var scroller = this.display.scroller, co = scrollerCutOff; + return {left: scroller.scrollLeft, top: scroller.scrollTop, + height: scroller.scrollHeight - co, width: scroller.scrollWidth - co, + clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co}; + }, + scrollIntoView: operation(null, function(pos, margin) { + if (typeof pos == "number") + pos = Pos(pos, 0); + if (!margin) + margin = 0; + var coords = pos; + + if (!pos || pos.line != null) { + this.curOp.scrollToPos = pos ? clipPos(this.doc, pos) : this.doc.sel.head; + this.curOp.scrollToPosMargin = margin; + coords = cursorCoords(this, this.curOp.scrollToPos); + } + var sPos = calculateScrollPos(this, coords.left, coords.top - margin, coords.right, coords.bottom + margin); + updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop); + }), + setSize: function(width, height) { + function interpret(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); + this.refresh(); + }, + on: function(type, f) { + on(this, type, f); + }, + off: function(type, f) { + off(this, type, f); + }, + operation: function(f) { + return runInOp(this, f); + }, + refresh: operation(null, function() { + clearCaches(this); + updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop); + regChange(this); + }), + swapDoc: operation(null, function(doc) { + var old = this.doc; + old.cm = null; + attachDoc(this, doc); + clearCaches(this); + resetInput(this, true); + updateScrollPos(this, doc.scrollLeft, doc.scrollTop); + return old; + }), + getInputField: function() { + return this.display.input; + }, + getWrapperElement: function() { + return this.display.wrapper; + }, + getScrollerElement: function() { + return this.display.scroller; + }, + getGutterElement: function() { + return this.display.gutters; + } + }; + + // OPTION DEFAULTS + + var optionHandlers = CodeMirror.optionHandlers = {}; + + // The default configuration options. + var defaults = CodeMirror.defaults = {}; + + 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; + } + + var Init = CodeMirror.Init = {toString: function() { + return "CodeMirror.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) { + 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) { + loadMode(cm); + clearCaches(cm); + regChange(cm); + }, true); + option("electricChars", true); + option("rtlMoveVisually", !windows); + + option("theme", "default", function(cm) { + themeChanged(cm); + guttersChanged(cm); + }, true); + option("keyMap", "default", keyMapChanged); + option("extraKeys", null); + + option("onKeyEvent", null); + option("onDragEvent", 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, updateScrollbars, 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("readOnly", false, function(cm, val) { + if (val == "nocursor") { + onBlur(cm); + cm.display.input.blur(); + } + else if (!val) + resetInput(cm, true); + }); + option("dragDrop", true); + + option("cursorBlinkRate", 530); + option("cursorScrollMargin", 0); + option("cursorHeight", 1); + option("workTime", 100); + option("workDelay", 100); + option("flattenSpans", true); + option("pollInterval", 100); + option("undoDepth", 40, function(cm, val) { + cm.doc.history.undoDepth = val; + }); + option("historyEventDelay", 500); + option("viewportMargin", 10, function(cm) { + cm.refresh(); + }, true); + option("maxHighlightLength", 10000, function(cm) { + loadMode(cm); + cm.refresh(); + }, true); + option("moveInputWithCursor", true, function(cm, val) { + if (!val) + cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0; + }); + + option("tabindex", null, function(cm, val) { + cm.display.input.tabIndex = val || ""; + }); + option("autofocus", null); + + // MODE DEFINITION AND QUERYING + + // Known modes, by name and by MIME + var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; + + CodeMirror.defineMode = function(name, mode) { + if (!CodeMirror.defaults.mode && name != "null") + CodeMirror.defaults.mode = name; + if (arguments.length > 2) { + mode.dependencies = []; + for (var i = 2; i < arguments.length; ++i) + mode.dependencies.push(arguments[i]); + } + modes[name] = mode; + }; + + CodeMirror.defineMIME = function(mime, spec) { + mimeModes[mime] = spec; + }; + + CodeMirror.resolveMode = function(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]; + spec = createObj(found, spec); + spec.name = found.name; + } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { + return CodeMirror.resolveMode("application/xml"); + } + if (typeof spec == "string") + return {name: spec}; + else + return spec || {name: "null"}; + }; + + CodeMirror.getMode = function(options, spec) { + spec = CodeMirror.resolveMode(spec); + var mfactory = modes[spec.name]; + if (!mfactory) + return CodeMirror.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; + return modeObj; + }; + + CodeMirror.defineMode("null", function() { + return {token: function(stream) { + stream.skipToEnd(); + }}; + }); + CodeMirror.defineMIME("text/plain", "null"); + + var modeExtensions = CodeMirror.modeExtensions = {}; + CodeMirror.extendMode = function(mode, properties) { + var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); + copyObj(properties, exts); + }; + + // EXTENSIONS + + CodeMirror.defineExtension = function(name, func) { + CodeMirror.prototype[name] = func; + }; + CodeMirror.defineDocExtension = function(name, func) { + Doc.prototype[name] = func; + }; + CodeMirror.defineOption = option; + + var initHooks = []; + CodeMirror.defineInitHook = function(f) { + initHooks.push(f); + }; + + // MODE STATE HANDLING + + // Utility functions for working with state. Exported because modes + // sometimes need to do this. + 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; + } + CodeMirror.copyState = copyState; + + function startState(mode, a1, a2) { + return mode.startState ? mode.startState(a1, a2) : true; + } + CodeMirror.startState = startState; + + CodeMirror.innerMode = function(mode, state) { + while (mode.innerMode) { + var info = mode.innerMode(state); + state = info.state; + mode = info.mode; + } + return info || {mode: mode, state: state}; + }; + + // STANDARD COMMANDS + + var commands = CodeMirror.commands = { + selectAll: function(cm) { + cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine())); + }, + killLine: function(cm) { + var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to); + if (!sel && cm.getLine(from.line).length == from.ch) + cm.replaceRange("", from, Pos(from.line + 1, 0), "+delete"); + else + cm.replaceRange("", from, sel ? to : Pos(from.line), "+delete"); + }, + deleteLine: function(cm) { + var l = cm.getCursor().line; + cm.replaceRange("", Pos(l, 0), Pos(l), "+delete"); + }, + undo: function(cm) { + cm.undo(); + }, + redo: function(cm) { + cm.redo(); + }, + goDocStart: function(cm) { + cm.extendSelection(Pos(cm.firstLine(), 0)); + }, + goDocEnd: function(cm) { + cm.extendSelection(Pos(cm.lastLine())); + }, + goLineStart: function(cm) { + cm.extendSelection(lineStart(cm, cm.getCursor().line)); + }, + goLineStartSmart: function(cm) { + var cur = cm.getCursor(), start = lineStart(cm, cur.line); + var line = cm.getLineHandle(start.line); + var order = getOrder(line); + if (!order || order[0].level == 0) { + var firstNonWS = Math.max(0, line.text.search(/\S/)); + var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch; + cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS)); + } else + cm.extendSelection(start); + }, + goLineEnd: function(cm) { + cm.extendSelection(lineEnd(cm, cm.getCursor().line)); + }, + goLineRight: function(cm) { + var top = cm.charCoords(cm.getCursor(), "div").top + 5; + cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")); + }, + goLineLeft: function(cm) { + var top = cm.charCoords(cm.getCursor(), "div").top + 5; + cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div")); + }, + goLineUp: function(cm) { + cm.moveV(-1, "line"); + }, + goLineDown: function(cm) { + cm.moveV(1, "line"); + }, + goPageUp: function(cm) { + cm.moveV(-1, "page"); + }, + goPageDown: function(cm) { + cm.moveV(1, "page"); + }, + goCharLeft: function(cm) { + cm.moveH(-1, "char"); + }, + goCharRight: function(cm) { + cm.moveH(1, "char"); + }, + goColumnLeft: function(cm) { + cm.moveH(-1, "column"); + }, + goColumnRight: function(cm) { + cm.moveH(1, "column"); + }, + goWordLeft: function(cm) { + cm.moveH(-1, "word"); + }, + goGroupRight: function(cm) { + cm.moveH(1, "group"); + }, + goGroupLeft: function(cm) { + cm.moveH(-1, "group"); + }, + goWordRight: function(cm) { + cm.moveH(1, "word"); + }, + delCharBefore: function(cm) { + cm.deleteH(-1, "char"); + }, + delCharAfter: function(cm) { + cm.deleteH(1, "char"); + }, + delWordBefore: function(cm) { + cm.deleteH(-1, "word"); + }, + delWordAfter: function(cm) { + cm.deleteH(1, "word"); + }, + delGroupBefore: function(cm) { + cm.deleteH(-1, "group"); + }, + delGroupAfter: function(cm) { + cm.deleteH(1, "group"); + }, + indentAuto: function(cm) { + cm.indentSelection("smart"); + }, + indentMore: function(cm) { + cm.indentSelection("add"); + }, + indentLess: function(cm) { + cm.indentSelection("subtract"); + }, + insertTab: function(cm) { + cm.replaceSelection("\t", "end", "+input"); + }, + defaultTab: function(cm) { + if (cm.somethingSelected()) + cm.indentSelection("add"); + else + cm.replaceSelection("\t", "end", "+input"); + }, + transposeChars: function(cm) { + var cur = cm.getCursor(), line = cm.getLine(cur.line); + if (cur.ch > 0 && cur.ch < line.length - 1) + cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1), + Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1)); + }, + newlineAndIndent: function(cm) { + operation(cm, function() { + cm.replaceSelection("\n", "end", "+input"); + cm.indentLine(cm.getCursor().line, null, true); + })(); + }, + toggleOverwrite: function(cm) { + cm.toggleOverwrite(); + } + }; + + // STANDARD KEYMAPS + + var keyMap = CodeMirror.keyMap = {}; + keyMap.basic = { + "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", + "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", + "Delete": "delCharAfter", "Backspace": "delCharBefore", "Tab": "defaultTab", "Shift-Tab": "indentAuto", + "Enter": "newlineAndIndent", "Insert": "toggleOverwrite" + }; + // Note that the save and find-related commands aren't defined by + // default. 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", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd", + "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", + fallthrough: "basic" + }; + keyMap.macDefault = { + "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", + "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", + "Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "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", + fallthrough: ["basic", "emacsy"] + }; + keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; + 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" + }; + + // KEYMAP DISPATCH + + function getKeyMap(val) { + if (typeof val == "string") + return keyMap[val]; + else + return val; + } + + function lookupKey(name, maps, handle) { + function lookup(map) { + map = getKeyMap(map); + var found = map[name]; + if (found === false) + return "stop"; + if (found != null && handle(found)) + return true; + if (map.nofallthrough) + return "stop"; + + var fallthrough = map.fallthrough; + if (fallthrough == null) + return false; + if (Object.prototype.toString.call(fallthrough) != "[object Array]") + return lookup(fallthrough); + for (var i = 0, e = fallthrough.length; i < e; ++i) { + var done = lookup(fallthrough[i]); + if (done) + return done; + } + return false; + } + + for (var i = 0; i < maps.length; ++i) { + var done = lookup(maps[i]); + if (done) + return done; + } + } + function isModifierKey(event) { + var name = keyNames[event.keyCode]; + return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; + } + function keyName(event, noShift) { + if (opera && event.keyCode == 34 && event["char"]) + return false; + var name = keyNames[event.keyCode]; + if (name == null || event.altGraphKey) + return false; + if (event.altKey) + name = "Alt-" + name; + if (flipCtrlCmd ? event.metaKey : event.ctrlKey) + name = "Ctrl-" + name; + if (flipCtrlCmd ? event.ctrlKey : event.metaKey) + name = "Cmd-" + name; + if (!noShift && event.shiftKey) + name = "Shift-" + name; + return name; + } + CodeMirror.lookupKey = lookupKey; + CodeMirror.isModifierKey = isModifierKey; + CodeMirror.keyName = keyName; + + // FROMTEXTAREA + + CodeMirror.fromTextArea = function(textarea, options) { + if (!options) + 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 = document.body; + // doc.activeElement occasionally throws on IE + try { + hasFocus = document.activeElement; + } catch (e) { + } + options.autofocus = hasFocus == textarea || + textarea.getAttribute("autofocus") != null && hasFocus == document.body; + } + + function save() { + textarea.value = cm.getValue(); + } + 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) { + } + } + } + + textarea.style.display = "none"; + var cm = CodeMirror(function(node) { + textarea.parentNode.insertBefore(node, textarea.nextSibling); + }, options); + cm.save = save; + cm.getTextArea = function() { + return textarea; + }; + cm.toTextArea = function() { + 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; + } + }; + return cm; + }; + + // STRING STREAM + + // Fed to the mode parsers, provides helper functions to make + // parsers more succinct. + + // The character stream used by a mode's parser. + function StringStream(string, tabSize) { + this.pos = this.start = 0; + this.string = string; + this.tabSize = tabSize || 8; + this.lastColumnPos = this.lastColumnValue = 0; + } + + StringStream.prototype = { + eol: function() { + return this.pos >= this.string.length; + }, + sol: function() { + return this.pos == 0; + }, + peek: function() { + return this.string.charAt(this.pos) || undefined; + }, + next: function() { + if (this.pos < this.string.length) + return this.string.charAt(this.pos++); + }, + eat: function(match) { + var ch = this.string.charAt(this.pos); + if (typeof match == "string") + var ok = ch == match; + else + var ok = ch && (match.test ? match.test(ch) : match(ch)); + if (ok) { + ++this.pos; + return ch; + } + }, + eatWhile: function(match) { + var start = this.pos; + while (this.eat(match)) { + } + return this.pos > start; + }, + eatSpace: function() { + var start = this.pos; + while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) + ++this.pos; + return this.pos > start; + }, + skipToEnd: function() { + this.pos = this.string.length; + }, + skipTo: function(ch) { + var found = this.string.indexOf(ch, this.pos); + if (found > -1) { + this.pos = found; + return true; + } + }, + backUp: function(n) { + this.pos -= n; + }, + 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; + }, + indentation: function() { + return countColumn(this.string, null, this.tabSize); + }, + 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; + } + }, + current: function() { + return this.string.slice(this.start, this.pos); + } + }; + CodeMirror.StringStream = StringStream; + + // TEXTMARKERS + + function TextMarker(doc, type) { + this.lines = []; + this.type = type; + this.doc = doc; + } + CodeMirror.TextMarker = TextMarker; + + TextMarker.prototype.clear = function() { + if (this.explicitlyCleared) + return; + var cm = this.doc.cm, withOp = cm && !cm.curOp; + if (withOp) + startOperation(cm); + var min = null, max = null; + for (var i = 0; i < this.lines.length; ++i) { + var line = this.lines[i]; + var span = getMarkedSpanFor(line.markedSpans, this); + if (span.to != null) + max = lineNo(line); + line.markedSpans = removeMarkedSpan(line.markedSpans, span); + if (span.from != null) + min = lineNo(line); + else if (this.collapsed && !lineIsHidden(this.doc, line) && cm) + updateLineHeight(line, textHeight(cm.display)); + } + if (cm && this.collapsed && !cm.options.lineWrapping) + for (var i = 0; i < this.lines.length; ++i) { + var visual = visualLine(cm.doc, this.lines[i]), len = lineLength(cm.doc, visual); + if (len > cm.display.maxLineLength) { + cm.display.maxLine = visual; + cm.display.maxLineLength = len; + cm.display.maxLineChanged = true; + } + } + + if (min != null && cm) + regChange(cm, min, max + 1); + this.lines.length = 0; + this.explicitlyCleared = true; + if (this.collapsed && this.doc.cantEdit) { + this.doc.cantEdit = false; + if (cm) + reCheckSelection(cm); + } + if (withOp) + endOperation(cm); + signalLater(this, "clear"); + }; + + TextMarker.prototype.find = function() { + var from, to; + for (var i = 0; i < this.lines.length; ++i) { + var line = this.lines[i]; + var span = getMarkedSpanFor(line.markedSpans, this); + if (span.from != null || span.to != null) { + var found = lineNo(line); + if (span.from != null) + from = Pos(found, span.from); + if (span.to != null) + to = Pos(found, span.to); + } + } + if (this.type == "bookmark") + return from; + return from && {from: from, to: to}; + }; + + TextMarker.prototype.changed = function() { + var pos = this.find(), cm = this.doc.cm; + if (!pos || !cm) + return; + var line = getLine(this.doc, pos.from.line); + clearCachedMeasurement(cm, line); + if (pos.from.line >= cm.display.showingFrom && pos.from.line < cm.display.showingTo) { + for (var node = cm.display.lineDiv.firstChild; node; node = node.nextSibling) + if (node.lineObj == line) { + if (node.offsetHeight != line.height) + updateLineHeight(line, node.offsetHeight); + break; + } + runInOp(cm, function() { + cm.curOp.selectionChanged = true; + }); + } + }; + + 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); + } + }; + + function markText(doc, from, to, options, type) { + if (options && options.shared) + return markTextShared(doc, from, to, options, type); + if (doc.cm && !doc.cm.curOp) + return operation(doc.cm, markText)(doc, from, to, options, type); + + var marker = new TextMarker(doc, type); + if (type == "range" && !posLess(from, to)) + return marker; + if (options) + copyObj(options, marker); + if (marker.replacedWith) { + marker.collapsed = true; + marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget"); + } + if (marker.collapsed) + sawCollapsedSpans = true; + + if (marker.addToHistory) + addToHistory(doc, {from: from, to: to, origin: "markText"}, + {head: doc.sel.head, anchor: doc.sel.anchor}, NaN); + + var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd, cm = doc.cm, updateMaxLine; + doc.iter(curLine, to.line + 1, function(line) { + if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(doc, line) == cm.display.maxLine) + updateMaxLine = true; + var span = {from: null, to: null, marker: marker}; + size += line.text.length; + if (curLine == from.line) { + span.from = from.ch; + size -= from.ch; + } + if (curLine == to.line) { + span.to = to.ch; + size -= line.text.length - to.ch; + } + if (marker.collapsed) { + if (curLine == to.line) + collapsedAtEnd = collapsedSpanAt(line, to.ch); + if (curLine == from.line) + collapsedAtStart = collapsedSpanAt(line, from.ch); + else + updateLineHeight(line, 0); + } + addMarkedSpan(line, span); + ++curLine; + }); + 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() { + marker.clear(); + }); + + if (marker.readOnly) { + sawReadOnlySpans = true; + if (doc.history.done.length || doc.history.undone.length) + doc.clearHistory(); + } + if (marker.collapsed) { + if (collapsedAtStart != collapsedAtEnd) + throw new Error("Inserting collapsed marker overlapping an existing one"); + marker.size = size; + marker.atomic = true; + } + if (cm) { + if (updateMaxLine) + cm.curOp.updateMaxLine = true; + if (marker.className || marker.startStyle || marker.endStyle || marker.collapsed) + regChange(cm, from.line, to.line + 1); + if (marker.atomic) + reCheckSelection(cm); + } + return marker; + } + + // SHARED TEXTMARKERS + + function SharedTextMarker(markers, primary) { + this.markers = markers; + this.primary = primary; + for (var i = 0, me = this; i < markers.length; ++i) { + markers[i].parent = this; + on(markers[i], "clear", function() { + me.clear(); + }); + } + } + CodeMirror.SharedTextMarker = SharedTextMarker; + + SharedTextMarker.prototype.clear = function() { + if (this.explicitlyCleared) + return; + this.explicitlyCleared = true; + for (var i = 0; i < this.markers.length; ++i) + this.markers[i].clear(); + signalLater(this, "clear"); + }; + SharedTextMarker.prototype.find = function() { + return this.primary.find(); + }; + + 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.replacedWith; + linkedDocs(doc, function(doc) { + if (widget) + options.replacedWith = 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); + } + + // TEXTMARKER SPANS + + function getMarkedSpanFor(spans, marker) { + if (spans) + for (var i = 0; i < spans.length; ++i) { + var span = spans[i]; + if (span.marker == marker) + return span; + } + } + function removeMarkedSpan(spans, span) { + for (var r, i = 0; i < spans.length; ++i) + if (spans[i] != span) + (r || (r = [])).push(spans[i]); + return r; + } + function addMarkedSpan(line, span) { + line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; + span.marker.attachLine(line); + } + + function markedSpansBefore(old, startCh, isInsert) { + if (old) + for (var i = 0, nw; 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 || marker.type == "bookmark" && span.from == startCh && (!isInsert || !span.marker.insertLeft)) { + var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh); + (nw || (nw = [])).push({from: span.from, + to: endsAfter ? null : span.to, + marker: marker}); + } + } + return nw; + } + + function markedSpansAfter(old, endCh, isInsert) { + if (old) + for (var i = 0, nw; 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 || marker.type == "bookmark" && span.from == endCh && (!isInsert || span.marker.insertLeft)) { + var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh); + (nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh, + to: span.to == null ? null : span.to - endCh, + marker: marker}); + } + } + return nw; + } + + function stretchSpansOverChange(doc, change) { + 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 = posEq(change.from, change.to); + // 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 = 0; i < last.length; ++i) { + var span = last[i]; + if (span.to != null) + span.to += offset; + if (span.from == null) { + var found = getMarkedSpanFor(first, span.marker); + if (!found) { + span.from = offset; + if (sameLine) + (first || (first = [])).push(span); + } + } else { + span.from += offset; + if (sameLine) + (first || (first = [])).push(span); + } + } + } + + 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 = 0; i < first.length; ++i) + if (first[i].to == null) + (gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker}); + for (var i = 0; i < gap; ++i) + newMarkers.push(gapMarkers); + newMarkers.push(last); + } + return newMarkers; + } + + 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; + } + + 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(); + for (var j = 0; j < parts.length; ++j) { + var p = parts[j]; + if (posLess(p.to, m.from) || posLess(m.to, p.from)) + continue; + var newParts = [j, 1]; + if (posLess(p.from, m.from) || !mk.inclusiveLeft && posEq(p.from, m.from)) + newParts.push({from: p.from, to: m.from}); + if (posLess(m.to, p.to) || !mk.inclusiveRight && posEq(p.to, m.to)) + newParts.push({from: m.to, to: p.to}); + parts.splice.apply(parts, newParts); + j += newParts.length - 1; + } + } + return parts; + } + + function collapsedSpanAt(line, ch) { + var sps = sawCollapsedSpans && line.markedSpans, found; + if (sps) + for (var sp, i = 0; i < sps.length; ++i) { + sp = sps[i]; + if (!sp.marker.collapsed) + continue; + if ((sp.from == null || sp.from < ch) && + (sp.to == null || sp.to > ch) && + (!found || found.width < sp.marker.width)) + found = sp.marker; + } + return found; + } + function collapsedSpanAtStart(line) { + return collapsedSpanAt(line, -1); + } + function collapsedSpanAtEnd(line) { + return collapsedSpanAt(line, line.text.length + 1); + } + + function visualLine(doc, line) { + var merged; + while (merged = collapsedSpanAtStart(line)) + line = getLine(doc, merged.find().from.line); + return line; + } + + function lineIsHidden(doc, line) { + var sps = sawCollapsedSpans && line.markedSpans; + if (sps) + for (var sp, i = 0; i < sps.length; ++i) { + sp = sps[i]; + if (!sp.marker.collapsed) + continue; + if (sp.from == null) + return true; + 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().to, endLine = getLine(doc, end.line); + return lineIsHiddenInner(doc, endLine, getMarkedSpanFor(endLine.markedSpans, span.marker)); + } + if (span.marker.inclusiveRight && span.to == line.text.length) + return true; + for (var sp, i = 0; i < line.markedSpans.length; ++i) { + sp = line.markedSpans[i]; + if (sp.marker.collapsed && sp.from == span.to && + (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && + lineIsHiddenInner(doc, line, sp)) + return true; + } + } + + 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; + } + + // LINE WIDGETS + + var LineWidget = CodeMirror.LineWidget = function(cm, node, options) { + for (var opt in options) + if (options.hasOwnProperty(opt)) + this[opt] = options[opt]; + this.cm = cm; + this.node = node; + }; + function widgetOperation(f) { + return function() { + var withOp = !this.cm.curOp; + if (withOp) + startOperation(this.cm); + try { + var result = f.apply(this, arguments); + } + finally { + if (withOp) + endOperation(this.cm); + } + return result; + }; + } + LineWidget.prototype.clear = widgetOperation(function() { + var ws = this.line.widgets, no = lineNo(this.line); + if (no == null || !ws) + return; + for (var i = 0; i < ws.length; ++i) + if (ws[i] == this) + ws.splice(i--, 1); + if (!ws.length) + this.line.widgets = null; + updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this))); + regChange(this.cm, no, no + 1); + }); + LineWidget.prototype.changed = widgetOperation(function() { + var oldH = this.height; + this.height = null; + var diff = widgetHeight(this) - oldH; + if (!diff) + return; + updateLineHeight(this.line, this.line.height + diff); + var no = lineNo(this.line); + regChange(this.cm, no, no + 1); + }); + + function widgetHeight(widget) { + if (widget.height != null) + return widget.height; + if (!widget.node.parentNode || widget.node.parentNode.nodeType != 1) + removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative")); + return widget.height = widget.node.offsetHeight; + } + + function addLineWidget(cm, handle, node, options) { + var widget = new LineWidget(cm, node, options); + if (widget.noHScroll) + cm.display.alignWidgets = true; + changeLine(cm, handle, function(line) { + (line.widgets || (line.widgets = [])).push(widget); + widget.line = line; + if (!lineIsHidden(cm.doc, line) || widget.showIfHidden) { + var aboveVisible = heightAtLine(cm, line) < cm.display.scroller.scrollTop; + updateLineHeight(line, line.height + widgetHeight(widget)); + if (aboveVisible) + addToScrollPos(cm, 0, widget.height); + } + return true; + }); + return widget; + } + + // LINE DATA STRUCTURE + + // Line objects. These hold state related to a line, including + // highlighting info (the styles array). + function makeLine(text, markedSpans, estimateHeight) { + var line = {text: text}; + attachMarkedSpans(line, markedSpans); + line.height = estimateHeight ? estimateHeight(line) : 1; + return line; + } + + 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); + } + + function cleanUpLine(line) { + line.parent = null; + detachMarkedSpans(line); + } + + // Run the given mode's parser over a line, update the styles + // array, which contains alternating fragments of text and CSS + // classes. + function runMode(cm, text, mode, state, f) { + var flattenSpans = mode.flattenSpans; + if (flattenSpans == null) + flattenSpans = cm.options.flattenSpans; + var curText = "", curStyle = null; + var stream = new StringStream(text, cm.options.tabSize), style; + if (text == "" && mode.blankLine) + mode.blankLine(state); + while (!stream.eol()) { + if (stream.pos > cm.options.maxHighlightLength) { + flattenSpans = false; + // Webkit seems to refuse to render text nodes longer than 57444 characters + stream.pos = Math.min(text.length, stream.start + 50000); + style = null; + } else { + style = mode.token(stream, state); + } + var substr = stream.current(); + stream.start = stream.pos; + if (!flattenSpans || curStyle != style) { + if (curText) + f(curText, curStyle); + curText = substr; + curStyle = style; + } else + curText = curText + substr; + } + if (curText) + f(curText, curStyle); + } + + function highlightLine(cm, line, state) { + // 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]; + // Compute the base array of styles + runMode(cm, line.text, cm.doc.mode, state, function(txt, style) { + st.push(txt, style); + }); + + // Run overlays, adjust style array. + for (var o = 0; o < cm.state.overlays.length; ++o) { + var overlay = cm.state.overlays[o], i = 1; + runMode(cm, line.text, overlay.mode, true, function(txt, style) { + var start = i, len = txt.length; + // Ensure there's a token end at the current position, and that i points at it + while (len) { + var cur = st[i], len_ = cur.length; + if (len_ <= len) { + len -= len_; + } else { + st.splice(i, 1, cur.slice(0, len), st[i + 1], cur.slice(len)); + len = 0; + } + i += 2; + } + if (!style) + return; + if (overlay.opaque) { + st.splice(start, i - start, txt, style); + i = start + 2; + } else { + for (; start < i; start += 2) { + var cur = st[start + 1]; + st[start + 1] = cur ? cur + " " + style : style; + } + } + }); + } + + return st; + } + + function getLineStyles(cm, line) { + if (!line.styles || line.styles[0] != cm.state.modeGen) + line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line))); + return line.styles; + } + + // Lightweight form of highlight -- proceed over this line and + // update state, but don't save a style array. + function processLine(cm, line, state) { + var mode = cm.doc.mode; + var stream = new StringStream(line.text, cm.options.tabSize); + if (line.text == "" && mode.blankLine) + mode.blankLine(state); + while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) { + mode.token(stream, state); + stream.start = stream.pos; + } + } + + var styleToClassCache = {}; + function styleToClass(style) { + if (!style) + return null; + return styleToClassCache[style] || + (styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-")); + } + + function lineContent(cm, realLine, measure) { + var merged, line = realLine, lineBefore, sawBefore, simple = true; + while (merged = collapsedSpanAtStart(line)) { + simple = false; + line = getLine(cm.doc, merged.find().from.line); + if (!lineBefore) + lineBefore = line; + } + + var builder = {pre: elt("pre"), col: 0, pos: 0, display: !measure, + measure: null, addedOne: false, cm: cm}; + if (line.textClass) + builder.pre.className = line.textClass; + + do { + builder.measure = line == realLine && measure; + builder.pos = 0; + builder.addToken = builder.measure ? buildTokenMeasure : buildToken; + if ((ie || webkit) && cm.getOption("lineWrapping")) + builder.addToken = buildTokenSplitSpaces(builder.addToken); + if (measure && sawBefore && line != realLine && !builder.addedOne) { + measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure)); + builder.addedOne = true; + } + var next = insertLineContent(line, builder, getLineStyles(cm, line)); + sawBefore = line == lineBefore; + if (next) { + line = getLine(cm.doc, next.to.line); + simple = false; + } + } while (next); + + if (measure && !builder.addedOne) + measure[0] = builder.pre.appendChild(simple ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure)); + if (!builder.pre.firstChild && !lineIsHidden(cm.doc, realLine)) + builder.pre.appendChild(document.createTextNode("\u00a0")); + + var order; + // Work around problem with the reported dimensions of single-char + // direction spans on IE (issue #1129). See also the comment in + // cursorCoords. + if (measure && ie && (order = getOrder(line))) { + var l = order.length - 1; + if (order[l].from == order[l].to) + --l; + var last = order[l], prev = order[l - 1]; + if (last.from + 1 == last.to && prev && last.level < prev.level) { + var span = measure[builder.pos - 1]; + if (span) + span.parentNode.insertBefore(span.measureRight = zeroWidthElement(cm.display.measure), + span.nextSibling); + } + } + + signal(cm, "renderLine", cm, realLine, builder.pre); + return builder.pre; + } + + var tokenSpecialChars = /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\uFEFF]/g; + function buildToken(builder, text, style, startStyle, endStyle) { + if (!text) + return; + if (!tokenSpecialChars.test(text)) { + builder.col += text.length; + var content = document.createTextNode(text); + } else { + var content = document.createDocumentFragment(), pos = 0; + while (true) { + tokenSpecialChars.lastIndex = pos; + var m = tokenSpecialChars.exec(text); + var skipped = m ? m.index - pos : text.length - pos; + if (skipped) { + content.appendChild(document.createTextNode(text.slice(pos, pos + skipped))); + builder.col += skipped; + } + if (!m) + break; + pos += skipped + 1; + if (m[0] == "\t") { + var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; + content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); + builder.col += tabWidth; + } else { + var token = elt("span", "\u2022", "cm-invalidchar"); + token.title = "\\u" + m[0].charCodeAt(0).toString(16); + content.appendChild(token); + builder.col += 1; + } + } + } + if (style || startStyle || endStyle || builder.measure) { + var fullStyle = style || ""; + if (startStyle) + fullStyle += startStyle; + if (endStyle) + fullStyle += endStyle; + return builder.pre.appendChild(elt("span", [content], fullStyle)); + } + builder.pre.appendChild(content); + } + + function buildTokenMeasure(builder, text, style, startStyle, endStyle) { + var wrapping = builder.cm.options.lineWrapping; + for (var i = 0; i < text.length; ++i) { + var ch = text.charAt(i), start = i == 0; + if (ch >= "\ud800" && ch < "\udbff" && i < text.length - 1) { + ch = text.slice(i, i + 2); + ++i; + } else if (i && wrapping && spanAffectsWrapping(text, i)) { + builder.pre.appendChild(elt("wbr")); + } + var span = builder.measure[builder.pos] = + buildToken(builder, ch, style, + start && startStyle, i == text.length - 1 && endStyle); + // In IE single-space nodes wrap differently than spaces + // embedded in larger text nodes, except when set to + // white-space: normal (issue #1268). + if (ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) && + i < text.length - 1 && !/\s/.test(text.charAt(i + 1))) + span.style.whiteSpace = "normal"; + builder.pos += ch.length; + } + if (text.length) + builder.addedOne = true; + } + + function buildTokenSplitSpaces(inner) { + function split(old) { + var out = " "; + for (var i = 0; i < old.length - 2; ++i) + out += i % 2 ? " " : "\u00a0"; + out += " "; + return out; + } + return function(builder, text, style, startStyle, endStyle) { + return inner(builder, text.replace(/ {3,}/, split), style, startStyle, endStyle); + }; + } + + function buildCollapsedSpan(builder, size, widget) { + if (widget) { + if (!builder.display) + widget = widget.cloneNode(true); + builder.pre.appendChild(widget); + if (builder.measure && size) { + builder.measure[builder.pos] = widget; + builder.addedOne = true; + } + } + builder.pos += size; + } + + // 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; + if (!spans) { + for (var i = 1; i < styles.length; i += 2) + builder.addToken(builder, styles[i], styleToClass(styles[i + 1])); + return; + } + + var allText = line.text, len = allText.length; + var pos = 0, i = 1, text = "", style; + var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed; + for (; ; ) { + if (nextChange == pos) { // Update current marker set + spanStyle = spanEndStyle = spanStartStyle = ""; + collapsed = null; + nextChange = Infinity; + var foundBookmark = null; + for (var j = 0; j < spans.length; ++j) { + var sp = spans[j], m = sp.marker; + if (sp.from <= pos && (sp.to == null || sp.to > pos)) { + if (sp.to != null && nextChange > sp.to) { + nextChange = sp.to; + spanEndStyle = ""; + } + if (m.className) + spanStyle += " " + m.className; + if (m.startStyle && sp.from == pos) + spanStartStyle += " " + m.startStyle; + if (m.endStyle && sp.to == nextChange) + spanEndStyle += " " + m.endStyle; + if (m.collapsed && (!collapsed || collapsed.marker.width < m.width)) + collapsed = sp; + } else if (sp.from > pos && nextChange > sp.from) { + nextChange = sp.from; + } + if (m.type == "bookmark" && sp.from == pos && m.replacedWith) + foundBookmark = m.replacedWith; + } + if (collapsed && (collapsed.from || 0) == pos) { + buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos, + collapsed.from != null && collapsed.marker.replacedWith); + if (collapsed.to == null) + return collapsed.marker.find(); + } + if (foundBookmark && !collapsed) + buildCollapsedSpan(builder, 0, foundBookmark); + } + 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 : ""); + } + if (end >= upto) { + text = text.slice(upto - pos); + pos = upto; + break; + } + pos = end; + spanStartStyle = ""; + } + text = styles[i++]; + style = styleToClass(styles[i++]); + } + } + } + + // DOCUMENT DATA STRUCTURE + + function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) { + function spansFor(n) { + return markedSpans ? markedSpans[n] : null; + } + function update(line, text, spans) { + updateLine(line, text, spans, estimateHeight); + signalLater(line, "change", line, change); + } + + 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; + + // First adjust the line structure + if (from.ch == 0 && to.ch == 0 && lastText == "") { + // This is a whole-line replace. Treated specially to make + // sure line objects move the way they are supposed to. + for (var i = 0, e = text.length - 1, added = []; i < e; ++i) + added.push(makeLine(text[i], spansFor(i), estimateHeight)); + 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 { + for (var added = [], i = 1, e = text.length - 1; i < e; ++i) + added.push(makeLine(text[i], spansFor(i), estimateHeight)); + added.push(makeLine(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); + } + } 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); + for (var i = 1, e = text.length - 1, added = []; i < e; ++i) + added.push(makeLine(text[i], spansFor(i), estimateHeight)); + if (nlines > 1) + doc.remove(from.line + 1, nlines - 1); + doc.insert(from.line + 1, added); + } + + signalLater(doc, "change", doc, change); + setSelection(doc, selAfter.anchor, selAfter.head, null, true); + } + + function LeafChunk(lines) { + this.lines = lines; + this.parent = null; + for (var i = 0, e = lines.length, height = 0; i < e; ++i) { + lines[i].parent = this; + height += lines[i].height; + } + this.height = height; + } + + LeafChunk.prototype = { + chunkSize: function() { + return this.lines.length; + }, + removeInner: function(at, n) { + for (var i = at, e = at + n; i < e; ++i) { + var line = this.lines[i]; + this.height -= line.height; + cleanUpLine(line); + signalLater(line, "delete"); + } + this.lines.splice(at, n); + }, + collapse: function(lines) { + lines.splice.apply(lines, [lines.length, 0].concat(this.lines)); + }, + insertInner: function(at, lines, height) { + this.height += height; + this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); + for (var i = 0, e = lines.length; i < e; ++i) + lines[i].parent = this; + }, + iterN: function(at, n, op) { + for (var e = at + n; at < e; ++at) + if (op(this.lines[at])) + return true; + } + }; + + function BranchChunk(children) { + this.children = children; + var size = 0, height = 0; + for (var i = 0, e = children.length; i < e; ++i) { + var ch = children[i]; + size += ch.chunkSize(); + height += ch.height; + ch.parent = this; + } + this.size = size; + this.height = height; + this.parent = null; + } + + BranchChunk.prototype = { + chunkSize: function() { + return this.size; + }, + removeInner: function(at, n) { + this.size -= n; + for (var i = 0; i < this.children.length; ++i) { + var child = this.children[i], sz = child.chunkSize(); + if (at < sz) { + var rm = Math.min(n, sz - at), oldHeight = child.height; + child.removeInner(at, rm); + this.height -= oldHeight - child.height; + if (sz == rm) { + this.children.splice(i--, 1); + child.parent = null; + } + if ((n -= rm) == 0) + break; + at = 0; + } else + at -= sz; + } + if (this.size - n < 25) { + var lines = []; + this.collapse(lines); + this.children = [new LeafChunk(lines)]; + this.children[0].parent = this; + } + }, + collapse: function(lines) { + for (var i = 0, e = this.children.length; i < e; ++i) + this.children[i].collapse(lines); + }, + insertInner: function(at, lines, height) { + this.size += lines.length; + this.height += height; + for (var i = 0, e = this.children.length; i < e; ++i) { + var child = this.children[i], sz = child.chunkSize(); + if (at <= sz) { + child.insertInner(at, lines, height); + if (child.lines && child.lines.length > 50) { + while (child.lines.length > 50) { + var spilled = child.lines.splice(child.lines.length - 25, 25); + var newleaf = new LeafChunk(spilled); + child.height -= newleaf.height; + this.children.splice(i + 1, 0, newleaf); + newleaf.parent = this; + } + this.maybeSpill(); + } + break; + } + at -= sz; + } + }, + 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(); + }, + iterN: function(at, n, op) { + for (var i = 0, e = this.children.length; i < e; ++i) { + var child = this.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; + } + } + }; + + var nextDocId = 0; + var Doc = CodeMirror.Doc = function(text, mode, firstLine) { + if (!(this instanceof Doc)) + return new Doc(text, mode, firstLine); + if (firstLine == null) + firstLine = 0; + + BranchChunk.call(this, [new LeafChunk([makeLine("", null)])]); + this.first = firstLine; + this.scrollTop = this.scrollLeft = 0; + this.cantEdit = false; + this.history = makeHistory(); + this.frontier = firstLine; + var start = Pos(firstLine, 0); + this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null}; + this.id = ++nextDocId; + this.modeOption = mode; + + if (typeof text == "string") + text = splitLines(text); + updateDoc(this, {from: start, to: start, text: text}, null, {head: start, anchor: start}); + }; + + Doc.prototype = createObj(BranchChunk.prototype, { + constructor: Doc, + 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); + }, + insert: function(at, lines) { + var height = 0; + for (var i = 0, e = lines.length; i < e; ++i) + height += lines[i].height; + this.insertInner(at - this.first, lines, height); + }, + remove: function(at, n) { + this.removeInner(at - this.first, n); + }, + getValue: function(lineSep) { + var lines = getLines(this, this.first, this.first + this.size); + if (lineSep === false) + return lines; + return lines.join(lineSep || "\n"); + }, + setValue: 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: splitLines(code), origin: "setValue"}, + {head: top, anchor: top}, true); + }, + 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 || "\n"); + }, + getLine: function(line) { + var l = this.getLineHandle(line); + return l && l.text; + }, + setLine: function(line, text) { + if (isLine(this, line)) + replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line))); + }, + removeLine: function(line) { + if (line) + replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line))); + else + replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0))); + }, + getLineHandle: function(line) { + if (isLine(this, line)) + return getLine(this, line); + }, + getLineNumber: function(line) { + return lineNo(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 sel = this.sel, pos; + if (start == null || start == "head") + pos = sel.head; + else if (start == "anchor") + pos = sel.anchor; + else if (start == "end" || start === false) + pos = sel.to; + else + pos = sel.from; + return copyPos(pos); + }, + somethingSelected: function() { + return !posEq(this.sel.head, this.sel.anchor); + }, + setCursor: docOperation(function(line, ch, extend) { + var pos = clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line); + if (extend) + extendSelection(this, pos); + else + setSelection(this, pos, pos); + }), + setSelection: docOperation(function(anchor, head) { + setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor)); + }), + extendSelection: docOperation(function(from, to) { + extendSelection(this, clipPos(this, from), to && clipPos(this, to)); + }), + getSelection: function(lineSep) { + return this.getRange(this.sel.from, this.sel.to, lineSep); + }, + replaceSelection: function(code, collapse, origin) { + makeChange(this, {from: this.sel.from, to: this.sel.to, text: splitLines(code), origin: origin}, collapse || "around"); + }, + undo: docOperation(function() { + makeChangeFromHistory(this, "undo"); + }), + redo: docOperation(function() { + makeChangeFromHistory(this, "redo"); + }), + setExtending: function(val) { + this.sel.extend = val; + }, + historySize: function() { + var hist = this.history; + return {undo: hist.done.length, redo: hist.undone.length}; + }, + clearHistory: function() { + this.history = makeHistory(); + }, + markClean: function() { + this.history.dirtyCounter = 0; + this.history.lastOp = this.history.lastOrigin = null; + }, + isClean: function() { + return this.history.dirtyCounter == 0; + }, + getHistory: function() { + return {done: copyHistoryArray(this.history.done), + undone: copyHistoryArray(this.history.undone)}; + }, + setHistory: function(histData) { + var hist = this.history = makeHistory(); + hist.done = histData.done.slice(0); + hist.undone = histData.undone.slice(0); + }, + markText: function(from, to, options) { + return markText(this, clipPos(this, from), clipPos(this, to), options, "range"); + }, + setBookmark: function(pos, options) { + var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), + insertLeft: options && options.insertLeft}; + 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; + }, + 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; + this.iter(function(line) { + var sz = line.text.length + 1; + 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; + this.iter(this.first, coords.line, function(line) { + index += line.text.length + 1; + }); + return index; + }, + copy: function(copyHistory) { + var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first); + doc.scrollTop = this.scrollTop; + doc.scrollLeft = this.scrollLeft; + doc.sel = {from: this.sel.from, to: this.sel.to, head: this.sel.head, anchor: this.sel.anchor, + shift: this.sel.shift, extend: false, goalColumn: this.sel.goalColumn}; + 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); + 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}]; + return copy; + }, + unlinkDoc: function(other) { + if (other instanceof CodeMirror) + other = other.doc; + if (this.linked) + for (var i = 0; i < this.linked.length; ++i) { + var link = this.linked[i]; + if (link.doc != other) + continue; + this.linked.splice(i, 1); + other.unlinkDoc(this); + break; + } + // If the histories were shared, split them again + if (other.history == this.history) { + var splitIds = [other.id]; + linkedDocs(other, function(doc) { + splitIds.push(doc.id); + }, true); + other.history = makeHistory(); + 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; + } + }); + + Doc.prototype.eachLine = Doc.prototype.iter; + + // The Doc methods that should be available on CodeMirror instances + var dontDelegate = "iter insert remove copy getEditor".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]); + + 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); + } + + 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); + if (!cm.options.lineWrapping) + computeMaxLength(cm); + cm.options.mode = doc.modeOption; + regChange(cm); + } + + // LINE UTILITIES + + function getLine(chunk, n) { + n -= chunk.first; + 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]; + } + + 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; + } + function getLines(doc, from, to) { + var out = []; + doc.iter(from, to, function(line) { + out.push(line.text); + }); + return out; + } + + function updateLineHeight(line, height) { + var diff = height - line.height; + for (var n = line; n; n = n.parent) + n.height += diff; + } + + 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; + } + + function lineAtHeight(chunk, h) { + var n = chunk.first; + outer: do { + for (var i = 0, e = chunk.children.length; i < e; ++i) { + var child = chunk.children[i], ch = child.height; + if (h < ch) { + chunk = child; + continue outer; + } + h -= ch; + n += child.chunkSize(); + } + return n; + } while (!chunk.lines); + for (var i = 0, e = chunk.lines.length; i < e; ++i) { + var line = chunk.lines[i], lh = line.height; + if (h < lh) + break; + h -= lh; + } + return n + i; + } + + function heightAtLine(cm, lineObj) { + lineObj = visualLine(cm.doc, 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 = 0; i < p.children.length; ++i) { + var cur = p.children[i]; + if (cur == chunk) + break; + else + h += cur.height; + } + } + return h; + } + + function getOrder(line) { + var order = line.order; + if (order == null) + order = line.order = bidiOrdering(line.text); + return order; + } + + // HISTORY + + function makeHistory() { + return { + // Arrays of history events. Doing something adds an event to + // done and clears undo. Undoing moves events from done to + // undone, redoing moves them in the other direction. + done: [], undone: [], undoDepth: Infinity, + // Used to track when changes can be merged into a single undo + // event + lastTime: 0, lastOp: null, lastOrigin: null, + // Used by the isClean() method + dirtyCounter: 0 + }; + } + + 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; + }); + } + + function historyChangeFromChange(doc, change) { + var histChange = {from: 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) { + attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); + }, true); + return histChange; + } + + function addToHistory(doc, change, selAfter, opId) { + var hist = doc.history; + hist.undone.length = 0; + var time = +new Date, cur = lst(hist.done); + + if (cur && + (hist.lastOp == opId || + hist.lastOrigin == change.origin && change.origin && + ((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) || + change.origin.charAt(0) == "*"))) { + // Merge this change into the last event + var last = lst(cur.changes); + if (posEq(change.from, change.to) && posEq(change.from, last.to)) { + // 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)); + } + cur.anchorAfter = selAfter.anchor; + cur.headAfter = selAfter.head; + } else { + // Can not be merged, start a new event. + cur = {changes: [historyChangeFromChange(doc, change)], + anchorBefore: doc.sel.anchor, headBefore: doc.sel.head, + anchorAfter: selAfter.anchor, headAfter: selAfter.head}; + hist.done.push(cur); + while (hist.done.length > hist.undoDepth) + hist.done.shift(); + if (hist.dirtyCounter < 0) + // The user has made a change after undoing past the last clean state. + // We can never get back to a clean state now until markClean() is called. + hist.dirtyCounter = NaN; + else + hist.dirtyCounter++; + } + hist.lastTime = time; + hist.lastOp = opId; + hist.lastOrigin = change.origin; + } + + function removeClearedSpans(spans) { + if (!spans) + return null; + for (var i = 0, out; 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; + } + + function getOldSpans(doc, change) { + var found = change["spans_" + doc.id]; + if (!found) + return null; + for (var i = 0, nw = []; i < change.text.length; ++i) + nw.push(removeClearedSpans(found[i])); + return nw; + } + + // 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) { + for (var i = 0, copy = []; i < events.length; ++i) { + var event = events[i], changes = event.changes, newChanges = []; + copy.push({changes: newChanges, anchorBefore: event.anchorBefore, headBefore: event.headBefore, + anchorAfter: event.anchorAfter, headAfter: event.headAfter}); + for (var j = 0; j < changes.length; ++j) { + var change = changes[j], m; + 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; + } + + // Rebasing/resetting history to deal with externally-sourced changes + + function rebaseHistSel(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; + for (var j = 0; j < sub.changes.length; ++j) { + var cur = sub.changes[j]; + if (!sub.copied) { + cur.from = copyPos(cur.from); + cur.to = copyPos(cur.to); + } + if (to < cur.from.line) { + cur.from.line += diff; + cur.to.line += diff; + } else if (from <= cur.to.line) { + ok = false; + break; + } + } + if (!sub.copied) { + sub.anchorBefore = copyPos(sub.anchorBefore); + sub.headBefore = copyPos(sub.headBefore); + sub.anchorAfter = copyPos(sub.anchorAfter); + sub.readAfter = copyPos(sub.headAfter); + sub.copied = true; + } + if (!ok) { + array.splice(0, i + 1); + i = 0; + } else { + rebaseHistSel(sub.anchorBefore); + rebaseHistSel(sub.headBefore); + rebaseHistSel(sub.anchorAfter); + rebaseHistSel(sub.headAfter); + } + } + } + + 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); + } + + // EVENT OPERATORS + + function stopMethod() { + e_stop(this); + } + // Ensure an event has a stop method. + function addStop(event) { + if (!event.stop) + event.stop = stopMethod; + return event; + } + + 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_stop(e) { + e_preventDefault(e); + e_stopPropagation(e); + } + CodeMirror.e_stop = e_stop; + CodeMirror.e_preventDefault = e_preventDefault; + CodeMirror.e_stopPropagation = e_stopPropagation; + + 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; + } + + // EVENT HANDLING + + function on(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 = {}); + var arr = map[type] || (map[type] = []); + arr.push(f); + } + } + + function off(emitter, type, f) { + if (emitter.removeEventListener) + emitter.removeEventListener(type, f, false); + else if (emitter.detachEvent) + emitter.detachEvent("on" + type, f); + else { + var arr = emitter._handlers && emitter._handlers[type]; + if (!arr) + return; + for (var i = 0; i < arr.length; ++i) + if (arr[i] == f) { + arr.splice(i, 1); + break; + } + } + } + + function signal(emitter, type /*, values...*/) { + var arr = emitter._handlers && emitter._handlers[type]; + if (!arr) + return; + var args = Array.prototype.slice.call(arguments, 2); + for (var i = 0; i < arr.length; ++i) + arr[i].apply(null, args); + } + + var delayedCallbacks, delayedCallbackDepth = 0; + function signalLater(emitter, type /*, values...*/) { + var arr = emitter._handlers && emitter._handlers[type]; + if (!arr) + return; + var args = Array.prototype.slice.call(arguments, 2); + if (!delayedCallbacks) { + ++delayedCallbackDepth; + delayedCallbacks = []; + setTimeout(fireDelayed, 0); + } + function bnd(f) { + return function() { + f.apply(null, args); + }; + } + ; + for (var i = 0; i < arr.length; ++i) + delayedCallbacks.push(bnd(arr[i])); + } + + function fireDelayed() { + --delayedCallbackDepth; + var delayed = delayedCallbacks; + delayedCallbacks = null; + for (var i = 0; i < delayed.length; ++i) + delayed[i](); + } + + function hasHandler(emitter, type) { + var arr = emitter._handlers && emitter._handlers[type]; + return arr && arr.length > 0; + } + + CodeMirror.on = on; + CodeMirror.off = off; + CodeMirror.signal = signal; + + // MISC UTILITIES + + // Number of pixels added to scroller and sizer to hide scrollbar + var scrollerCutOff = 30; + + // Returned or thrown by various protocols to signal 'I'm not + // handling this'. + var Pass = CodeMirror.Pass = {toString: function() { + return "CodeMirror.Pass"; + }}; + + function Delayed() { + this.id = null; + } + Delayed.prototype = {set: function(ms, f) { + clearTimeout(this.id); + this.id = setTimeout(f, ms); + }}; + + // 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; i < end; ++i) { + if (string.charAt(i) == "\t") + n += tabSize - (n % tabSize); + else + ++n; + } + return n; + } + CodeMirror.countColumn = countColumn; + + 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 selectInput(node) { + if (ios) { // Mobile Safari apparently has a bug where select() is broken. + node.selectionStart = 0; + node.selectionEnd = node.value.length; + } else + node.select(); + } + + function indexOf(collection, elt) { + if (collection.indexOf) + return collection.indexOf(elt); + for (var i = 0, e = collection.length; i < e; ++i) + if (collection[i] == elt) + return i; + return -1; + } + + function createObj(base, props) { + function Obj() { + } + Obj.prototype = base; + var inst = new Obj(); + if (props) + copyObj(props, inst); + return inst; + } + + function copyObj(obj, target) { + if (!target) + target = {}; + for (var prop in obj) + if (obj.hasOwnProperty(prop)) + target[prop] = obj[prop]; + return target; + } + + function emptyArray(size) { + for (var a = [], i = 0; i < size; ++i) + a.push(undefined); + return a; + } + + function bind(f) { + var args = Array.prototype.slice.call(arguments, 1); + return function() { + return f.apply(null, args); + }; + } + + var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; + function isWordChar(ch) { + return /\w/.test(ch) || ch > "\x80" && + (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); + } + + function isEmpty(obj) { + for (var n in obj) + if (obj.hasOwnProperty(n) && obj[n]) + return false; + return true; + } + + var isExtendingChar = /[\u0300-\u036F\u0483-\u0487\u0488-\u0489\u0591-\u05BD\u05BF\u05C1-\u05C2\u05C4-\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7-\u06E8\u06EA-\u06ED\uA66F\uA670-\uA672\uA674-\uA67D\uA69F\udc00-\udfff]/; + + // DOM UTILITIES + + 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") + setTextContent(e, content); + else if (content) + for (var i = 0; i < content.length; ++i) + e.appendChild(content[i]); + return e; + } + + 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 setTextContent(e, str) { + if (ie_lt9) { + e.innerHTML = ""; + e.appendChild(document.createTextNode(str)); + } else + e.textContent = str; + } + + function getRect(node) { + return node.getBoundingClientRect(); + } + CodeMirror.replaceGetRect = function(f) { + getRect = f; + }; + + // FEATURE DETECTION + + // 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_lt9) + return false; + var div = elt('div'); + return "draggable" in div || "dragDrop" in div; + }(); + + // For a reason I have yet to figure out, some browsers disallow + // word wrapping between certain characters *only* if a new inline + // element is started between them. This makes it hard to reliably + // measure the position of things, since that requires inserting an + // extra span. This terribly fragile set of tests matches the + // character combinations that suffer from this phenomenon on the + // various browsers. + function spanAffectsWrapping() { + return false; + } + if (gecko) // Only for "$'" + spanAffectsWrapping = function(str, i) { + return str.charCodeAt(i - 1) == 36 && str.charCodeAt(i) == 39; + }; + else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent)) + spanAffectsWrapping = function(str, i) { + return /\-[^ \-?]|\?[^ !\'\"\),.\-\/:;\?\]\}]/.test(str.slice(i - 1, i + 1)); + }; + else if (webkit) + spanAffectsWrapping = function(str, i) { + if (i > 1 && str.charCodeAt(i - 1) == 45 && /\w/.test(str.charAt(i - 2)) && /[^\-?\.]/.test(str.charAt(i))) + return true; + return /[~!#%&*)=+}\]|\"\.>,:;][({[<]|\?[\w~`@#$%\^&*(_=+{[|><]/.test(str.slice(i - 1, i + 1)); + }; + + var knownScrollbarWidth; + function scrollbarWidth(measure) { + if (knownScrollbarWidth != null) + return knownScrollbarWidth; + var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll"); + removeChildrenAndAdd(measure, test); + if (test.offsetWidth) + knownScrollbarWidth = test.offsetHeight - test.clientHeight; + return knownScrollbarWidth || 0; + } + + 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_lt8; + } + if (zwspSupported) + return elt("span", "\u200b"); + else + return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); + } + + // See if "".split is the broken IE version, if so, provide an + // alternative way to split lines. + var splitLines = "\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/); + }; + CodeMirror.splitLines = splitLines; + + var hasSelection = window.getSelection ? function(te) { + try { + return te.selectionStart != te.selectionEnd; + } + catch (e) { + return false; + } + } : function(te) { + try { + var 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'; + })(); + + // KEY NAMING + + 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: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete", + 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", + 221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home", + 63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"}; + CodeMirror.keyNames = keyNames; + (function() { + // Number keys + for (var i = 0; i < 10; i++) + keyNames[i + 48] = String(i); + // Alphabetic keys + for (var i = 65; i <= 90; i++) + keyNames[i] = String.fromCharCode(i); + // Function keys + for (var i = 1; i <= 12; i++) + keyNames[i + 111] = keyNames[i + 63235] = "F" + i; + })(); + + // BIDI HELPERS + + function iterateBidiSections(order, from, to, f) { + if (!order) + return f(from, to, "ltr"); + 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"); + } + } + + function bidiLeft(part) { + return part.level % 2 ? part.to : part.from; + } + function bidiRight(part) { + return part.level % 2 ? part.from : part.to; + } + + function lineLeft(line) { + var order = getOrder(line); + return order ? bidiLeft(order[0]) : 0; + } + function lineRight(line) { + var order = getOrder(line); + if (!order) + return line.text.length; + return bidiRight(lst(order)); + } + + function lineStart(cm, lineN) { + var line = getLine(cm.doc, lineN); + var visual = visualLine(cm.doc, line); + if (visual != line) + lineN = lineNo(visual); + var order = getOrder(visual); + var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual); + return Pos(lineN, ch); + } + function lineEnd(cm, lineN) { + var merged, line; + while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN))) + lineN = merged.find().to.line; + var order = getOrder(line); + var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); + return Pos(lineN, ch); + } + + function compareBidiLevel(order, a, b) { + var linedir = order[0].level; + if (a == linedir) + return true; + if (b == linedir) + return false; + return a < b; + } + var bidiOther; + function getBidiPartAt(order, pos) { + for (var i = 0, found; i < order.length; ++i) { + var cur = order[i]; + if (cur.from < pos && cur.to > pos) { + bidiOther = null; + return i; + } + if (cur.from == pos || cur.to == pos) { + if (found == null) { + found = i; + } else if (compareBidiLevel(order, cur.level, order[found].level)) { + bidiOther = found; + return i; + } else { + bidiOther = i; + return found; + } + } + } + bidiOther = null; + return found; + } + + function moveInLine(line, pos, dir, byUnit) { + if (!byUnit) + return pos + dir; + do + pos += dir; + while (pos > 0 && isExtendingChar.test(line.text.charAt(pos))); + return pos; + } + + // This is somewhat involved. It is needed in order to move + // 'visually' through bi-directional text -- i.e., pressing left + // should make the cursor go left, even when in RTL text. The + // tricky part is the 'jumps', where RTL and LTR text touch each + // other. This often requires the cursor offset to move more than + // one unit, in order to visually move one unit. + function moveVisually(line, start, dir, byUnit) { + var bidi = getOrder(line); + if (!bidi) + return moveLogically(line, start, dir, byUnit); + var pos = getBidiPartAt(bidi, start), part = bidi[pos]; + var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit); + + for (; ; ) { + if (target > part.from && target < part.to) + return target; + if (target == part.from || target == part.to) { + if (getBidiPartAt(bidi, target) == pos) + return target; + part = bidi[pos += dir]; + return (dir > 0) == part.level % 2 ? part.to : part.from; + } else { + part = bidi[pos += dir]; + if (!part) + return null; + if ((dir > 0) == part.level % 2) + target = moveInLine(line, part.to, -1, byUnit); + else + target = moveInLine(line, part.from, 1, byUnit); + } + } + } + + function moveLogically(line, start, dir, byUnit) { + var target = start + dir; + if (byUnit) + while (target > 0 && isExtendingChar.test(line.text.charAt(target))) + target += dir; + return target < 0 || target > line.text.length ? null : target; + } + + // 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%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL"; + // Character types for codepoints 0x600 to 0x6ff + var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr"; + function charType(code) { + if (code <= 0xff) + return lowTypes.charAt(code); + else if (0x590 <= code && code <= 0x5f4) + return "R"; + else if (0x600 <= code && code <= 0x6ff) + return arabicTypes.charAt(code - 0x600); + else if (0x700 <= code && code <= 0x8ac) + return "r"; + else + return "L"; + } + + var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; + var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; + // Browsers seem to always treat the boundaries of block elements as being L. + var outerType = "L"; + + return function(str) { + if (!bidiRE.test(str)) + return false; + var len = str.length, types = []; + for (var i = 0, type; i < len; ++i) + types.push(type = 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 = 0, prev = outerType; i < len; ++i) { + var type = types[i]; + if (type == "m") + types[i] = 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 = 0, cur = outerType; i < len; ++i) { + var type = types[i]; + if (type == "1" && cur == "r") + types[i] = "n"; + else if (isStrong.test(type)) { + cur = type; + if (type == "r") + types[i] = "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 = 1, prev = types[0]; i < len - 1; ++i) { + var type = types[i]; + if (type == "+" && prev == "1" && types[i + 1] == "1") + types[i] = "1"; + else if (type == "," && prev == types[i + 1] && + (prev == "1" || prev == "n")) + types[i] = prev; + prev = type; + } + + // 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 = 0; i < len; ++i) { + var type = types[i]; + if (type == ",") + types[i] = "N"; + else if (type == "%") { + for (var end = i + 1; end < len && types[end] == "%"; ++end) { + } + var replace = (i && types[i - 1] == "!") || (end < len - 1 && types[end] == "1") ? "1" : "N"; + for (var j = i; j < end; ++j) + types[j] = replace; + i = 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 = 0, cur = outerType; i < len; ++i) { + var type = types[i]; + if (cur == "L" && type == "1") + types[i] = "L"; + else if (isStrong.test(type)) + cur = type; + } + + // 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 = 0; i < len; ++i) { + if (isNeutral.test(types[i])) { + for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) { + } + var before = (i ? types[i - 1] : outerType) == "L"; + var after = (end < len - 1 ? types[end] : outerType) == "L"; + var replace = before || after ? "L" : "R"; + for (var j = i; j < end; ++j) + types[j] = replace; + i = end - 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 = 0; i < len; ) { + if (countsAsLeft.test(types[i])) { + var start = i; + for (++i; i < len && countsAsLeft.test(types[i]); ++i) { + } + order.push({from: start, to: i, level: 0}); + } else { + var pos = i, at = order.length; + for (++i; i < len && types[i] != "L"; ++i) { + } + for (var j = pos; j < i; ) { + if (countsAsNum.test(types[j])) { + if (pos < j) + order.splice(at, 0, {from: pos, to: j, level: 1}); + var nstart = j; + for (++j; j < i && countsAsNum.test(types[j]); ++j) { + } + order.splice(at, 0, {from: nstart, to: j, level: 2}); + pos = j; + } else + ++j; + } + if (pos < i) + order.splice(at, 0, {from: pos, to: i, level: 1}); + } + } + if (order[0].level == 1 && (m = str.match(/^\s+/))) { + order[0].from = m[0].length; + order.unshift({from: 0, to: m[0].length, level: 0}); + } + if (lst(order).level == 1 && (m = str.match(/\s+$/))) { + lst(order).to -= m[0].length; + order.push({from: len - m[0].length, to: len, level: 0}); + } + if (order[0].level != lst(order).level) + order.push({from: len, to: len, level: order[0].level}); + + return order; + }; + })(); + + // THE END + + CodeMirror.version = "3.13"; + + return CodeMirror; +})(); diff --git a/res/codemirror/eclipse.css b/res/codemirror/eclipse.css new file mode 100644 index 0000000..9c7adbc --- /dev/null +++ b/res/codemirror/eclipse.css @@ -0,0 +1,25 @@ +.cm-s-eclipse span.cm-meta {color: #FF1717;} +.cm-s-eclipse span.cm-keyword { line-height: 1em; font-weight: bold; color: #7F0055; } +.cm-s-eclipse span.cm-atom {color: #219;} +.cm-s-eclipse span.cm-number {color: #164;} +.cm-s-eclipse span.cm-def {color: #00f;} +.cm-s-eclipse span.cm-variable {color: blue;} +.cm-s-eclipse span.cm-variable-2 {color: #0000C0;} +.cm-s-eclipse span.cm-variable-3 {color: #0000C0;} +.cm-s-eclipse span.cm-property {color: black;} +.cm-s-eclipse span.cm-operator {color: black;} +.cm-s-eclipse span.cm-comment {color: #3F7F5F;} +.cm-s-eclipse span.cm-string {color: red; font-weight: bold;} +.cm-s-eclipse span.cm-string-2 {color: #f50;} +.cm-s-eclipse span.cm-error {color: black;} +.cm-s-eclipse span.cm-qualifier {color: #555;} +.cm-s-eclipse span.cm-builtin {color: #30a;} +.cm-s-eclipse span.cm-bracket {color: #cc7;} +.cm-s-eclipse span.cm-tag {color: #170;} +.cm-s-eclipse span.cm-attribute {color: #00c;} +.cm-s-eclipse span.cm-link {color: #219;} + +.cm-s-eclipse .CodeMirror-matchingbracket { + outline:1px solid grey; + color:black !important; +} diff --git a/res/codemirror/match-highlighter.js b/res/codemirror/match-highlighter.js new file mode 100644 index 0000000..0800f4c --- /dev/null +++ b/res/codemirror/match-highlighter.js @@ -0,0 +1,60 @@ +// Highlighting text that matches the selection +// +// Defines an option highlightSelectionMatches, which, when enabled, +// will style strings that match the selection throughout the +// document. +// +// The option can be set to true to simply enable it, or to a +// {minChars, style} object to explicitly configure it. minChars is +// the minimum amount of characters that should be selected for the +// behavior to occur, and style is the token style to apply to the +// matches. This will be prefixed by "cm-" to create an actual CSS +// class name. + +(function() { + var DEFAULT_MIN_CHARS = 2; + var DEFAULT_TOKEN_STYLE = "matchhighlight"; + + function State(options) { + this.minChars = typeof options == "object" && options.minChars || DEFAULT_MIN_CHARS; + this.style = typeof options == "object" && options.style || DEFAULT_TOKEN_STYLE; + this.overlay = null; + } + + CodeMirror.defineOption("highlightSelectionMatches", false, function(cm, val, old) { + var prev = old && old != CodeMirror.Init; + if (val && !prev) { + cm.state.matchHighlighter = new State(val); + cm.on("cursorActivity", highlightMatches); + } else if (!val && prev) { + var over = cm.state.matchHighlighter.overlay; + if (over) cm.removeOverlay(over); + cm.state.matchHighlighter = null; + cm.off("cursorActivity", highlightMatches); + } + }); + + function highlightMatches(cm) { + cm.operation(function() { + var state = cm.state.matchHighlighter; + if (state.overlay) { + cm.removeOverlay(state.overlay); + state.overlay = null; + } + + if (!cm.somethingSelected()) return; + var selection = cm.getSelection().replace(/^\s+|\s+$/g, ""); + if (selection.length < state.minChars) return; + + cm.addOverlay(state.overlay = makeOverlay(selection, state.style)); + }); + } + + function makeOverlay(query, style) { + return {token: function(stream) { + if (stream.match(query)) return style; + stream.next(); + stream.skipTo(query.charAt(0)) || stream.skipToEnd(); + }}; + } +})(); diff --git a/res/codemirror/search.js b/res/codemirror/search.js new file mode 100644 index 0000000..eb9ab8b --- /dev/null +++ b/res/codemirror/search.js @@ -0,0 +1,131 @@ +// Define search commands. Depends on dialog.js or another +// implementation of the openDialog method. + +// Replace works a little oddly -- it will do the replace on the next +// Ctrl-G (or whatever is bound to findNext) press. You prevent a +// replace by making sure the match is no longer selected when hitting +// Ctrl-G. + +(function() { + function searchOverlay(query) { + if (typeof query == "string") return {token: function(stream) { + if (stream.match(query)) return "searching"; + stream.next(); + stream.skipTo(query.charAt(0)) || stream.skipToEnd(); + }}; + return {token: function(stream) { + if (stream.match(query)) return "searching"; + while (!stream.eol()) { + stream.next(); + if (stream.match(query, false)) break; + } + }}; + } + + function SearchState() { + this.posFrom = this.posTo = this.query = null; + this.overlay = null; + } + function getSearchState(cm) { + return cm.state.search || (cm.state.search = new SearchState()); + } + function getSearchCursor(cm, query, pos) { + // Heuristic: if the query string is all lowercase, do a case insensitive search. + return cm.getSearchCursor(query, pos, typeof query == "string" && query == query.toLowerCase()); + } + function dialog(cm, text, shortText, f) { + if (cm.openDialog) cm.openDialog(text, f); + else f(prompt(shortText, "")); + } + function confirmDialog(cm, text, shortText, fs) { + if (cm.openConfirm) cm.openConfirm(text, fs); + else if (confirm(shortText)) fs[0](); + } + function parseQuery(query) { + var isRE = query.match(/^\/(.*)\/([a-z]*)$/); + return isRE ? new RegExp(isRE[1], isRE[2].indexOf("i") == -1 ? "" : "i") : query; + } + var queryDialog = + 'Search: (Use /re/ syntax for regexp search)'; + function doSearch(cm, rev) { + var state = getSearchState(cm); + if (state.query) return findNext(cm, rev); + dialog(cm, queryDialog, "Search for:", function(query) { + cm.operation(function() { + if (!query || state.query) return; + state.query = parseQuery(query); + cm.removeOverlay(state.overlay); + state.overlay = searchOverlay(query); + cm.addOverlay(state.overlay); + state.posFrom = state.posTo = cm.getCursor(); + findNext(cm, rev); + }); + }); + } + function findNext(cm, rev) {cm.operation(function() { + var state = getSearchState(cm); + var cursor = getSearchCursor(cm, state.query, rev ? state.posFrom : state.posTo); + if (!cursor.find(rev)) { + cursor = getSearchCursor(cm, state.query, rev ? CodeMirror.Pos(cm.lastLine()) : CodeMirror.Pos(cm.firstLine(), 0)); + if (!cursor.find(rev)) return; + } + cm.setSelection(cursor.from(), cursor.to()); + state.posFrom = cursor.from(); state.posTo = cursor.to(); + });} + function clearSearch(cm) {cm.operation(function() { + var state = getSearchState(cm); + if (!state.query) return; + state.query = null; + cm.removeOverlay(state.overlay); + });} + + var replaceQueryDialog = + 'Replace: (Use /re/ syntax for regexp search)'; + var replacementQueryDialog = 'With: '; + var doReplaceConfirm = "Replace? "; + function replace(cm, all) { + dialog(cm, replaceQueryDialog, "Replace:", function(query) { + if (!query) return; + query = parseQuery(query); + dialog(cm, replacementQueryDialog, "Replace with:", function(text) { + if (all) { + cm.operation(function() { + for (var cursor = getSearchCursor(cm, query); cursor.findNext();) { + if (typeof query != "string") { + var match = cm.getRange(cursor.from(), cursor.to()).match(query); + cursor.replace(text.replace(/\$(\d)/, function(_, i) {return match[i];})); + } else cursor.replace(text); + } + }); + } else { + clearSearch(cm); + var cursor = getSearchCursor(cm, query, cm.getCursor()); + var advance = function() { + var start = cursor.from(), match; + if (!(match = cursor.findNext())) { + cursor = getSearchCursor(cm, query); + if (!(match = cursor.findNext()) || + (start && cursor.from().line == start.line && cursor.from().ch == start.ch)) return; + } + cm.setSelection(cursor.from(), cursor.to()); + confirmDialog(cm, doReplaceConfirm, "Replace?", + [function() {doReplace(match);}, advance]); + }; + var doReplace = function(match) { + cursor.replace(typeof query == "string" ? text : + text.replace(/\$(\d)/, function(_, i) {return match[i];})); + advance(); + }; + advance(); + } + }); + }); + } + + CodeMirror.commands.find = function(cm) {clearSearch(cm); doSearch(cm);}; + CodeMirror.commands.findNext = doSearch; + CodeMirror.commands.findPrev = function(cm) {doSearch(cm, true);}; + CodeMirror.commands.clearSearch = clearSearch; + CodeMirror.commands.replace = replace; + CodeMirror.commands.replaceAll = function(cm) {replace(cm, true);}; +})(); diff --git a/res/codemirror/searchcursor.js b/res/codemirror/searchcursor.js new file mode 100644 index 0000000..3da3f04 --- /dev/null +++ b/res/codemirror/searchcursor.js @@ -0,0 +1,143 @@ +(function(){ + var Pos = CodeMirror.Pos; + + function SearchCursor(doc, query, pos, caseFold) { + this.atOccurrence = false; this.doc = doc; + if (caseFold == null && typeof query == "string") caseFold = false; + + pos = pos ? doc.clipPos(pos) : Pos(0, 0); + this.pos = {from: pos, to: pos}; + + // The matches method is filled in based on the type of query. + // It takes a position and a direction, and returns an object + // describing the next occurrence of the query, or null if no + // more matches were found. + if (typeof query != "string") { // Regexp match + if (!query.global) query = new RegExp(query.source, query.ignoreCase ? "ig" : "g"); + this.matches = function(reverse, pos) { + if (reverse) { + query.lastIndex = 0; + var line = doc.getLine(pos.line).slice(0, pos.ch), cutOff = 0, match, start; + for (;;) { + query.lastIndex = cutOff; + var newMatch = query.exec(line); + if (!newMatch) break; + match = newMatch; + start = match.index; + cutOff = match.index + (match[0].length || 1); + if (cutOff == line.length) break; + } + var matchLen = (match && match[0].length) || 0; + if (!matchLen) { + if (start == 0 && line.length == 0) {match = undefined;} + else if (start != doc.getLine(pos.line).length) { + matchLen++; + } + } + } else { + query.lastIndex = pos.ch; + var line = doc.getLine(pos.line), match = query.exec(line); + var matchLen = (match && match[0].length) || 0; + var start = match && match.index; + if (start + matchLen != line.length && !matchLen) matchLen = 1; + } + if (match && matchLen) + return {from: Pos(pos.line, start), + to: Pos(pos.line, start + matchLen), + match: match}; + }; + } else { // String query + if (caseFold) query = query.toLowerCase(); + var fold = caseFold ? function(str){return str.toLowerCase();} : function(str){return str;}; + var target = query.split("\n"); + // Different methods for single-line and multi-line queries + if (target.length == 1) { + if (!query.length) { + // Empty string would match anything and never progress, so + // we define it to match nothing instead. + this.matches = function() {}; + } else { + this.matches = function(reverse, pos) { + var line = fold(doc.getLine(pos.line)), len = query.length, match; + if (reverse ? (pos.ch >= len && (match = line.lastIndexOf(query, pos.ch - len)) != -1) + : (match = line.indexOf(query, pos.ch)) != -1) + return {from: Pos(pos.line, match), + to: Pos(pos.line, match + len)}; + }; + } + } else { + this.matches = function(reverse, pos) { + var ln = pos.line, idx = (reverse ? target.length - 1 : 0), match = target[idx], line = fold(doc.getLine(ln)); + var offsetA = (reverse ? line.indexOf(match) + match.length : line.lastIndexOf(match)); + if (reverse ? offsetA >= pos.ch || offsetA != match.length + : offsetA <= pos.ch || offsetA != line.length - match.length) + return; + for (;;) { + if (reverse ? !ln : ln == doc.lineCount() - 1) return; + line = fold(doc.getLine(ln += reverse ? -1 : 1)); + match = target[reverse ? --idx : ++idx]; + if (idx > 0 && idx < target.length - 1) { + if (line != match) return; + else continue; + } + var offsetB = (reverse ? line.lastIndexOf(match) : line.indexOf(match) + match.length); + if (reverse ? offsetB != line.length - match.length : offsetB != match.length) + return; + var start = Pos(pos.line, offsetA), end = Pos(ln, offsetB); + return {from: reverse ? end : start, to: reverse ? start : end}; + } + }; + } + } + } + + SearchCursor.prototype = { + findNext: function() {return this.find(false);}, + findPrevious: function() {return this.find(true);}, + + find: function(reverse) { + var self = this, pos = this.doc.clipPos(reverse ? this.pos.from : this.pos.to); + function savePosAndFail(line) { + var pos = Pos(line, 0); + self.pos = {from: pos, to: pos}; + self.atOccurrence = false; + return false; + } + + for (;;) { + if (this.pos = this.matches(reverse, pos)) { + if (!this.pos.from || !this.pos.to) { console.log(this.matches, this.pos); } + this.atOccurrence = true; + return this.pos.match || true; + } + if (reverse) { + if (!pos.line) return savePosAndFail(0); + pos = Pos(pos.line-1, this.doc.getLine(pos.line-1).length); + } + else { + var maxLine = this.doc.lineCount(); + if (pos.line == maxLine - 1) return savePosAndFail(maxLine); + pos = Pos(pos.line + 1, 0); + } + } + }, + + from: function() {if (this.atOccurrence) return this.pos.from;}, + to: function() {if (this.atOccurrence) return this.pos.to;}, + + replace: function(newText) { + if (!this.atOccurrence) return; + var lines = CodeMirror.splitLines(newText); + this.doc.replaceRange(lines, this.pos.from, this.pos.to); + this.pos.to = Pos(this.pos.from.line + lines.length - 1, + lines[lines.length - 1].length + (lines.length == 1 ? this.pos.from.ch : 0)); + } + }; + + CodeMirror.defineExtension("getSearchCursor", function(query, pos, caseFold) { + return new SearchCursor(this.doc, query, pos, caseFold); + }); + CodeMirror.defineDocExtension("getSearchCursor", function(query, pos, caseFold) { + return new SearchCursor(this, query, pos, caseFold); + }); +})(); diff --git a/res/style.css b/res/style.css new file mode 100644 index 0000000..f1e8921 --- /dev/null +++ b/res/style.css @@ -0,0 +1,40 @@ + body { + font-family: Arial, sans-serif; + margin: auto; + margin-top: 0.8rem; + max-width: 1000px; + background-color: #f8f8f8; + overflow-y: scroll; + } + #ide { + border: 1px solid silver; + border-radius: 4px; + padding: 1.2rem; + min-width: 600px; + margin: auto; + background-color: #e8f2ff; + } + +input { + display: none; + } + #file-drop { + text-align: center; + font-size: 1.2em; + margin-bottom: 0.5rem; + } + + + .CodeMirror { + width: 100%; + border: 1px solid silver; + border-radius: 0px 5px 5px 0px; + } + .CodeMirror-activeline-background { + background: #e8f2ff !important; + } + .CodeMirror-focused .cm-matchhighlight { + background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAYAAABytg0kAAAAFklEQVQI12NgYGBgkKzc8x9CMDAwAAAmhwSbidEoSQAAAABJRU5ErkJggg==); + background-position: bottom; + background-repeat: repeat-x; + } \ No newline at end of file diff --git a/src/BASDecompiler.ts b/src/BASDecompiler.ts new file mode 100644 index 0000000..37611c9 --- /dev/null +++ b/src/BASDecompiler.ts @@ -0,0 +1,202 @@ +import { Constants } from './Constants' + +export class BASDecompiler { + private static tosbyte(bytes: number): number { + if (0 <= bytes && bytes <= 63) { + return bytes; + } + if (64 <= bytes && bytes <= 191) { + return -(128 - bytes); + } + if (192 <= bytes && bytes <= 255) { + return -(256 - bytes); + } + return 0; + } + + public static decompile(basdata: ArrayBuffer): string { + try { + const data = new DataView(basdata); + let offset = 0; + + const readInt = () => { + const value = data.getInt32(offset); + offset += 4; + return value; + }; + const readShort = () => { + const value = data.getInt16(offset); + offset += 2; + return value; + }; + const readByte = () => { + const value = data.getInt8(offset); + offset += 1; + return value; + }; + const readUnsignedByte = () => { + const value = data.getUint8(offset); + offset += 1; + return value; + }; + const readFloat = () => { + const value = data.getFloat32(offset); + offset += 4; + return value; + }; + + let mb191: boolean; + switch (readInt()) { + case Constants.SIGNATURE_MB: + mb191 = false; + break; + case Constants.SIGNATURE_MB191: + mb191 = true; + break; + default: + return "notbas"; + } + + // Read variable name + let varnum = readShort(); + const varname: string[] = new Array(varnum); + let varn: string; + + for (let i = 0; i < varnum; i++) { + varn = ""; + const varlength = readShort(); + for (let ii = 0; ii < varlength; ii++) { + varn += String.fromCharCode(readByte()); + } + readByte(); + varname[i] = varn; + } + + // Read float mb191 + let floats: number[] = []; + if (mb191) { + varnum = readShort(); + floats = new Array(varnum); + for (let i = 0; i < varnum; i++) { + floats[i] = readFloat(); + } + } + const codeln = readShort(); + if (codeln !== data.byteLength - offset) { + return "obfuscate"; + } + + // Read code + let mainCode = ""; + + while (offset < data.byteLength) { + let first = true; + let line = `${readShort()}`; + const linelen = readByte() - 4; + const lims: number[] = new Array(linelen); + for (let iii = 0; iii < linelen; iii++) { + lims[iii] = readUnsignedByte(); + } + let cur = 0; + + while (cur < lims.length) { + const opType = lims[cur++]; + if (opType === 0xfc) { // Variable + if (first) { + line += ` ${varname[lims[cur]]}`; + } else { + line += varname[lims[cur]]; + } + cur++; + } else { // Operators + first = false; + let l: number; + switch (opType) { + case 0x0e: + line += " REM "; + l = lims[cur++]; + for (let i = 0; i < l; i++) { + line += String.fromCharCode(lims[cur++]); + } + break; + + case 0xfd: + line += "\""; + l = lims[cur++]; + for (let i = 0; i < l; i++) { + line += String.fromCharCode(lims[cur++]); + } + line += "\""; + break; + + case 0x30: + line += " DATA "; + l = lims[cur++]; + for (let i = 0; i < l; i++) { + line += String.fromCharCode(lims[cur++]); + } + break; + + case 0xf6: + line += "="; + break; + + case 0xf7: + continue; + + case 0xf8: + case 0xf9: + line += lims[cur++]; + break; + + case 0xfa: + line += lims[cur] * 256 + lims[cur + 1]; + cur += 2; + break; + + case 0xfb: + line += lims[cur] * 16777216 + lims[cur + 1] * 65536 + lims[cur + 2] * 256 + lims[cur + 3]; + cur += 4; + break; + + case 0xfe: + if (mb191) { + line += floats[lims[cur++]]; + } else { + const exp = this.tosbyte(lims[cur + 3]); + const m = (65536 + lims[cur] * 65536 + lims[cur + 1] * 256 + lims[cur + 2]) / 500000; + let e = 1; + let d = 1; + if (exp > 0) { + for (let i = 0; i < exp; i++) { + d *= 10; + } + e = d; + } + if (exp < 0) { + for (let i = exp; i < 0; i++) { + d /= 10; + } + e = d; + } + line += e * m; + cur += 4; + } + break; + + default: + line += Constants.ops[opType]; + break; + } + } + } + readUnsignedByte(); // consume the line's trailing byte + line += "\r\n"; + mainCode += line; + } + return mainCode; + } catch (ex) { + return ""; + } + } +} \ No newline at end of file diff --git a/src/Constants.ts b/src/Constants.ts new file mode 100644 index 0000000..17f2d36 --- /dev/null +++ b/src/Constants.ts @@ -0,0 +1,24 @@ +export class Constants { + public static readonly SIGNATURE_MB = 0x4d420001; + public static readonly SIGNATURE_MB191 = 0x4d420191; + + public static readonly ops = [ + " STOP ", " POP ", " RETURN ", " END ", " NEW ", " RUN ", " DIR ", " DEG ", " RAD ", " BYE ", " GOTO ", + " GOSUB ", " SLEEP ", " PRINT ", " REM ", " DIM ", " IF ", " THEN ", " CLS ", " PLOT ", " DRAWLINE ", + " FILLRECT ", " DRAWRECT ", " FILLROUNDRECT ", " DRAWROUNDRECT ", " FILLARC ", + " DRAWARC ", " DRAWSTRING ", " SETCOLOR ", " BLIT ", " FOR ", " TO ", " STEP ", " NEXT ", " INPUT ", + " LIST ", " ENTER ", " LOAD ", " SAVE ", " DELETE ", " EDIT ", " TRAP ", " OPEN ", " CLOSE ", + " NOTE ", " POINT ", " PUT ", " GET ", " DATA ", " RESTORE ", " READ ", "=", "<>", "<", "<=", + ">", ">=", "(", ")", ",", "+", "-", "-", "*", "/", "^", " BITAND ", " BITOR ", " BITXOR ", " NOT ", + " AND ", " OR ", "SCREENWIDTH", "SCREENHEIGHT", " ISCOLOR ", " NUMCOLORS ", "STRINGWIDTH", "STRINGHEIGHT", + "LEFT$", "MID$", "RIGHT$", "CHR$", "STR$", "LEN", "ASC", "VAL", " UP ", " DOWN ", " LEFT ", " RIGHT ", + " FIRE ", " GAMEA ", " GAMEB ", " GAMEC ", " GAMED ", " DAYS ", " MILLISECONDS ", + " YEAR ", " MONTH ", " DAY ", " HOUR ", " MINUTE ", " SECOND ", " MILLISECOND ", "RND", " ERR ", + " FRE ", "MOD", "EDITFORM ", "GAUGEFORM ", "CHOICEFORM", "DATEFORM", "MESSAGEFORM", + "LOG", "EXP", "SQR", "SIN", "COS", "TAN", "ASIN", "ACOS", "ATAN", "ABS", "=", "#", " PRINT ", + " INPUT ", ":", " GELGRAB ", " DRAWGEL ", " SPRITEGEL ", " SPRITEMOVE ", " SPRITEHIT ", + "READDIR$", "PROPERTY$", " GELLOAD ", " GELWIDTH", " GELHEIGHT", " PLAYWAV ", " PLAYTONE ", + " INKEY", "SELECT", "ALERT ", " SETFONT ", " MENUADD ", " MENUITEM", " MENUREMOVE ", + " CALL ", " ENDSUB ", " REPAINT", "SENDSMS ", " RAND", " ALPHAGEL ", " COLORALPHAGEL ", " PLATFORMREQUEST ", " DELGEL", " DELSPRITE ", "MKDIR" + ]; +} \ No newline at end of file diff --git a/src/main.ts b/src/main.ts new file mode 100644 index 0000000..e348240 --- /dev/null +++ b/src/main.ts @@ -0,0 +1,42 @@ +import { BASDecompiler } from './BASDecompiler' + +let editor : any; + +function openFile(file: File) { + const reader = new FileReader(); + reader.onload = () => { + if (reader.result instanceof ArrayBuffer) { + editor.setValue(BASDecompiler.decompile(reader.result as ArrayBuffer)); + } + }; + reader.readAsArrayBuffer(file); +} + +document.addEventListener('DOMContentLoaded', (e) => { + editor = CodeMirror.fromTextArea(document.getElementById('code'), { + lineNumbers: false, + styleActiveLine: true, + matchBrackets: true, + theme: 'eclipse', + highlightSelectionMatches: true + }); + + const fileInput = document.getElementById('file-input') as HTMLInputElement; + fileInput.onchange = (event) => { + openFile(fileInput.files[0]); + }; + + const panel : HTMLElement = document.getElementById('ide')!!; + panel.addEventListener('dragover', (event) => { + event.preventDefault(); + panel.style.borderColor = 'blue'; + }); + panel.addEventListener('dragleave', () => { + panel.style.borderColor = '#ccc'; + }); + panel.addEventListener('drop', (event) => { + event.preventDefault(); + panel.style.borderColor = '#ccc'; + openFile(event.dataTransfer!!.files[0]); + }); +}); \ No newline at end of file