From ff208644c24588c21da7dcf2fc018a464917d08e Mon Sep 17 00:00:00 2001 From: hustcc Date: Tue, 30 Aug 2016 13:57:55 +0800 Subject: [PATCH] init --- CNAME | 1 + favicon.ico | Bin 0 -> 380 bytes index.html | 71 + lib/codemirror.css | 245 ++ lib/codemirror.js | 5384 +++++++++++++++++++++++++++++++++++++++++ lib/codemirror.min.js | 4 + lib/mergely.css | 40 + lib/mergely.js | 1576 ++++++++++++ lib/mergely.min.js | 6 + lib/searchcursor.js | 131 + 10 files changed, 7458 insertions(+) create mode 100644 CNAME create mode 100644 favicon.ico create mode 100644 index.html create mode 100644 lib/codemirror.css create mode 100644 lib/codemirror.js create mode 100644 lib/codemirror.min.js create mode 100644 lib/mergely.css create mode 100644 lib/mergely.js create mode 100644 lib/mergely.min.js create mode 100644 lib/searchcursor.js diff --git a/CNAME b/CNAME new file mode 100644 index 0000000..f428553 --- /dev/null +++ b/CNAME @@ -0,0 +1 @@ +diff.hust.cc \ No newline at end of file diff --git a/favicon.ico b/favicon.ico new file mode 100644 index 0000000000000000000000000000000000000000..d7d21abfa27f675f4fac28ca4f133b63c7e1db06 GIT binary patch literal 380 zcmeAS@N?(olHy`uVBq!ia0vp^0wB!63?wyl`GbL!aEWU~iE~kEVo7FxoM1MG8D;L7Ik^QBld3PELlFmf0Xs9269keC)r3SGK05lZ2s@rdP6) zlaqv3v4p0ffTkr7C^|(+M73}z8VVSC30OucX3x>=IcGTMxkONPa&mH1R8&w@lOQw}8*iYZocap7!RK zexcRm>93=vbe}ls>?pT)#e($jg-L6c%)GJl&8{2Uetp|1A9p2{?aKmpt#?2tFnGH9 KxvX + + + + + Online File Diff and Mergely, Powered By aTool. + + + + + + + + + + + + + + + + +
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+ + + + diff --git a/lib/codemirror.css b/lib/codemirror.css new file mode 100644 index 0000000..8de0b19 --- /dev/null +++ b/lib/codemirror.css @@ -0,0 +1,245 @@ +/* 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 { + background-color: white; /* The little square between H and V scrollbars */ +} + +/* GUTTER */ + +.CodeMirror-gutters { + border-right: 1px solid #ddd; + background-color: #f7f7f7; +} +.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; +} +/* 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: transparent; + background: rgba(0, 200, 0, .4); + filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#6600c800, endColorstr=#4c00c800); +} +/* Kludge to turn off filter in ie9+, which also accepts rgba */ +.CodeMirror.cm-keymap-fat-cursor div.CodeMirror-cursor:not(#nonsense_id) { + filter: progid:DXImageTransform.Microsoft.gradient(enabled=false); +} +/* Can style cursor different in overwrite (non-insert) mode */ +.CodeMirror div.CodeMirror-cursor.CodeMirror-overwrite {} + +/* 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-emstrong {font-style: italic; font-weight: bold;} +.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; +} + +.CodeMirror-scroll { + /* 30px is the magic margin used to hide the element's real scrollbars */ + /* See overflow: hidden in .CodeMirror, and the paddings in .CodeMirror-sizer */ + 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 { + 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; + z-index: 6; +} + +.CodeMirror-gutters { + position: absolute; left: 0; top: 0; + height: 100%; + padding-bottom: 30px; + z-index: 3; +} +.CodeMirror-gutter { + height: 100%; + display: inline-block; + /* Hack to make IE7 behave */ + *zoom:1; + *display:inline; +} +.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; -o-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); +} + +/* IE7 hack to prevent it from returning funny offsetTops on the spans */ +.CodeMirror span { *vertical-align: text-bottom; } + +@media print { + /* Hide the cursor when printing */ + .CodeMirror div.CodeMirror-cursor { + visibility: hidden; + } +} diff --git a/lib/codemirror.js b/lib/codemirror.js new file mode 100644 index 0000000..87339d0 --- /dev/null +++ b/lib/codemirror.js @@ -0,0 +1,5384 @@ +// CodeMirror version 3.1 +// +// 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;"); + if (webkit) input.style.width = "1000px"; + else input.setAttribute("wrap", "off"); + input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); + // 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"); + // DIVs containing the selection and the actual code + d.lineDiv = elt("div"); + 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", "\u00a0", null, "position: absolute; height: " + scrollerCutOff + "px"); + // Will contain the gutters, if any + d.gutters = elt("div", null, "CodeMirror-gutters"); + d.lineGutter = null; + // Helper element to properly size the gutter backgrounds + var scrollerInner = elt("div", [d.sizer, d.heightForcer, d.gutters], null, "position: relative; min-height: 100%"); + // Provides scrolling + d.scroller = elt("div", [scrollerInner], "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.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(); + // True when a drag from the editor is active + d.draggingText = false; + + 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.display, cm.doc.height);}, 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); + } + + 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(d /* display */, docHeight) { + var totalHeight = docHeight + 2 * paddingTop(d); + d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "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 (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; + var updated = updateDisplayInner(cm, changes, viewPort); + 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); + } + updateSelection(cm); + updateScrollbars(cm.display, cm.doc.height); + + 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, viewPort) { + var display = cm.display, doc = cm.doc; + if (!display.wrapper.clientWidth) { + display.showingFrom = display.showingTo = doc.first; + display.viewOffset = 0; + return; + } + + // Compute the new visible window + // If scrollTop is specified, use that to determine which lines + // to render instead of the current scrollbar position. + var visible = visibleLines(display, doc, viewPort); + // 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;}); + + var focused = document.activeElement; + if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none"; + patchDisplay(cm, from, to, intact, positionsChangedFrom); + display.lineDiv.style.display = ""; + if (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); + + if (visibleLines(display, doc, viewPort).to > to) + updateDisplayInner(cm, [], viewPort); + 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", "\u00a0", 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 + 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(dir == "rtl" ? to - 1 : from); + var rightPos = coords(dir == "rtl" ? from : to - 1); + var 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) { + var display = cm.display; + clearInterval(display.blinker); + var on = true; + display.cursor.style.visibility = display.otherCursor.style.visibility = ""; + display.blinker = setInterval(function() { + if (!display.cursor.offsetHeight) return; + 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 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 measureLine(cm, line) { + // First look in the cache + var display = cm.display, 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 && + display.scroller.clientWidth == memo.width && + memo.classes == line.textClass + "|" + line.bgClass + "|" + line.wrapClass) + return memo.measure; + } + + var measure = measureLineInner(cm, line); + // Store result in the cache + var memo = {text: line.text, width: display.scroller.clientWidth, + markedSpans: line.markedSpans, measure: measure, + classes: line.textClass + "|" + line.bgClass + "|" + line.wrapClass}; + if (cache.length == 16) cache[++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]; + } + if (!cm.options.lineWrapping) { + var last = pre.lastChild; + if (last.nodeType == 3) last = pre.appendChild(elt("span", "\u200b")); + data.width = getRect(last).right - outer.left; + } + + return data; + } + + function clearCaches(cm) { + cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0; + cm.display.cachedCharWidth = cm.display.cachedTextHeight = null; + 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; + } + + 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); + } + var order = getOrder(lineObj), ch = pos.ch; + if (!order) return get(ch); + var main, other, linedir = order[0].level; + for (var i = 0; i < order.length; ++i) { + var part = order[i], rtl = part.level % 2, nb, here; + if (part.from < ch && part.to > ch) return get(ch, rtl); + var left = rtl ? part.to : part.from, right = rtl ? part.from : part.to; + if (left == ch) { + // IE returns bogus offsets and widths for edges where the + // direction flips, but only for the side with the lower + // level. So we try to use the side with the higher level. + if (i && part.level < (nb = order[i-1]).level) here = get(nb.level % 2 ? nb.from : nb.to - 1, true); + else here = get(rtl && part.from != part.to ? ch - 1 : ch); + if (rtl == linedir) main = here; else other = here; + } else if (right == ch) { + var nb = i < order.length - 1 && order[i+1]; + if (!rtl && nb && nb.from == nb.to) continue; + if (nb && part.level < nb.level) here = get(nb.level % 2 ? nb.to - 1 : nb.from); + else here = get(rtl ? ch : ch - 1, true); + if (rtl == linedir) main = here; else other = here; + } + } + if (linedir && !ch) other = get(order[0].to - 1); + if (!main) return other; + if (other) main.other = other; + return main; + } + + 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, cWidth = 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 Math.max(0, sp.left - cWidth); + else if (innerOff < sp.top) return sp.left + cWidth; + 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, + 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) { + var width = measureLine(cm, display.maxLine).width; + 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 (!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); + } 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.selectionChanged) 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; + // IE enjoys randomly deselecting our input's text when + // re-focusing. If the selection is gone but the cursor is at the + // start of the input, that's probably what happened. + if (ie && text && input.selectionStart === 0) { + 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[same] == text[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) 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); + if (minimal) cm.display.input.value = "-"; + else cm.display.input.value = selected || cm.getSelection(); + if (cm.state.focused) selectInput(cm.display.input); + } else if (user) cm.display.prevInput = cm.display.input.value = ""; + 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)); + on(d.scroller, "dblclick", operation(cm, 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() { + setScrollTop(cm, d.scroller.scrollTop); + setScrollLeft(cm, d.scroller.scrollLeft, true); + signal(cm, "scroll", cm); + }); + on(d.scrollbarV, "scroll", function() { + setScrollTop(cm, d.scrollbarV.scrollTop); + }); + on(d.scrollbarH, "scroll", function() { + 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) 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; + + function doSelect(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); + replaceRange(cm.doc, text.join(""), pos, "around", "paste"); + } + }; + 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 (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 && !safari) { + 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; + } + 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; + + // 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; + } + } + } + + var display = cm.display, scroll = display.scroller; + // 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); + maps.push(cm.options.keyMap); + if (cm.options.extraKeys) maps.unshift(cm.options.extraKeys); + 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; + 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 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 && (!ie || ie_lt9)) { + clearTimeout(detectingSelectAll); + var extval = display.input.value = " " + (posEq(sel.from, sel.to) ? "" : display.input.value), i = 0; + display.prevInput = " "; + display.input.selectionStart = 1; display.input.selectionEnd = extval.length; + var 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 (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) { + 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) { + 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}; + } + + 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; + } + }); + } + + 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, 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 = 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), toClear; + 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 && m.clearOnEnter) { + (toClear || (toClear = [])).push(m); + continue; + } else 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; + } + } + if (toClear) for (var i = 0; i < toClear.length; ++i) toClear[i].clear(); + } + return curPos; + } + } + + // SCROLLING + + function scrollCursorIntoView(cm) { + var coords = scrollPosIntoView(cm, cm.doc.sel.head); + if (!cm.state.focused) return; + var display = cm.display, box = getRect(display.sizer), doScroll = null; + if (coords.top + box.top < 0) doScroll = true; + else if (coords.bottom + 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) { + for (;;) { + var changed = false, coords = cursorCoords(cm, pos); + var scrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom); + 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; + var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {}; + var docBottom = cm.doc.height + 2 * pt; + var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10; + if (y1 < screentop) result.scrollTop = atTop ? 0 : Math.max(0, y1); + else if (y2 > screentop + screen) result.scrollTop = (atBottom ? docBottom : y2) - screen; + + 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; + } + + // 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; + 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") { + var sawWord = false; + for (;;) { + if (dir < 0) if (!moveOnce()) break; + if (isWordChar(lineObj.text.charAt(ch))) sawWord = true; + else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;} + if (dir > 0) if (!moveOnce()) break; + } + } + var result = skipAtomic(doc, Pos(line, ch), dir, 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; + } 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 = { + 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) { + this.state.keyMaps.push(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) { + var off = getRect(this.display.lineSpace); + var scrollY = window.pageYOffset || (document.documentElement || document.body).scrollTop; + var scrollX = window.pageXOffset || (document.documentElement || document.body).scrollLeft; + return coordsChar(this, coords.left - off.left - scrollX, coords.top - off.top - scrollY); + }, + + defaultTextHeight: function() { return textHeight(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") + this.display.scrollbarV.scrollTop += charCoords(this, target, "div").top - pos.top; + extendSelection(this.doc, target, target, dir); + sel.goalColumn = pos.left; + }), + + toggleOverwrite: function() { + 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", ""); + }, + + scrollTo: operation(null, function(x, y) { + this.curOp.updateScrollPos = {scrollLeft: x, scrollTop: 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: function(pos) { + if (typeof pos == "number") pos = Pos(pos, 0); + if (!pos || pos.line != null) { + pos = pos ? clipPos(this.doc, pos) : this.doc.sel.head; + scrollPosIntoView(this, pos); + } else { + scrollIntoView(this, pos.left, pos.top, pos.right, pos.bottom); + } + }, + + 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); + this.curOp.updateScrollPos = {scrollTop: this.doc.scrollTop, scrollLeft: this.doc.scrollLeft}; + regChange(this); + }), + + swapDoc: operation(null, function(doc) { + var old = this.doc; + old.cm = null; + attachDoc(this, doc); + clearCaches(this); + this.curOp.updateScrollPos = {scrollTop: doc.scrollTop, scrollLeft: doc.scrollLeft}; + 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("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("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("viewportMargin", 10, function(cm){cm.refresh();}, true); + + 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 (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.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)); + }, + 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");}, + 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");}, + 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": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", + "Ctrl-Backspace": "delWordBefore", "Ctrl-Delete": "delWordAfter", "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": "goWordLeft", + "Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordBefore", + "Ctrl-Alt-Backspace": "delWordAfter", "Alt-Delete": "delWordAfter", "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) { + 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; + // 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) { + // Deplorable hack to make the submit method do the right thing. + on(textarea.form, "submit", save); + 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; + } + + 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() {return countColumn(this.string, this.start, this.tabSize);}, + 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;}; + if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) { + 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.getOptions = function(copyWidget) { + var repl = this.replacedWith; + return {className: this.className, + inclusiveLeft: this.inclusiveLeft, inclusiveRight: this.inclusiveRight, + atomic: this.atomic, + collapsed: this.collapsed, + clearOnEnter: this.clearOnEnter, + replacedWith: copyWidget ? repl && repl.cloneNode(true) : repl, + readOnly: this.readOnly, + startStyle: this.startStyle, endStyle: this.endStyle}; + }; + + 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; + + 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.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(); + }; + SharedTextMarker.prototype.getOptions = function(copyWidget) { + var inner = this.primary.getOptions(copyWidget); + inner.shared = true; + return inner; + }; + + function markTextShared(doc, from, to, options, type) { + options = copyObj(options); + options.shared = false; + var markers = [markText(doc, from, to, options, type)], primary = markers[0]; + linkedDocs(doc, function(doc) { + 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) + cm.curOp.updateScrollPos = {scrollTop: cm.doc.scrollTop + widget.height, + scrollLeft: cm.doc.scrollLeft}; + } + 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); + signalLater(line, "change"); + } + + 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 = cm.options.flattenSpans; + var curText = "", curStyle = null; + var stream = new StringStream(text, cm.options.tabSize); + if (text == "" && mode.blankLine) mode.blankLine(state); + while (!stream.eol()) { + var style = mode.token(stream, state); + if (stream.pos > 5000) { + 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; + } + 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 <= 5000) { + 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 (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); + } + } + + return builder.pre; + } + + var tokenSpecialChars = /[\t\u0000-\u0019\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) { + 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 && builder.cm.options.lineWrapping && + spanAffectsWrapping.test(text.slice(i - 1, i + 1))) { + builder.pre.appendChild(elt("wbr")); + } + builder.measure[builder.pos] = + buildToken(builder, ch, style, + start && startStyle, i == text.length - 1 && endStyle); + builder.pos += ch.length; + } + if (text.length) builder.addedOne = true; + } + + 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;} + + 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)); + updateLine(lastLine, lastLine.text, lastSpans, estimateHeight); + if (nlines) doc.remove(from.line, nlines); + if (added.length) doc.insert(from.line, added); + } else if (firstLine == lastLine) { + if (text.length == 1) { + updateLine(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), + lastSpans, estimateHeight); + } 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)); + updateLine(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0), estimateHeight); + doc.insert(from.line + 1, added); + } + } else if (text.length == 1) { + updateLine(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), + spansFor(0), estimateHeight); + doc.remove(from.line + 1, nlines); + } else { + updateLine(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0), estimateHeight); + updateLine(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans, estimateHeight); + 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, { + 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 (isLine(this, line)) + replaceRange(this, "", Pos(line, 0), clipPos(this, Pos(line + 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) == "+" && hist.lastTime > time - 600) || 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) { + if (end == null) { + end = string.search(/[^\s\u00a0]/); + if (end == -1) end = string.length; + } + for (var i = 0, n = 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]/; + 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) { + // IE will break all parent-child relations in subnodes when setting innerHTML + if (!ie) e.innerHTML = ""; + else while (e.firstChild) 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 regexps matches the + // character combinations that suffer from this phenomenon on the + // various browsers. + var spanAffectsWrapping = /^$/; // Won't match any two-character string + if (gecko) spanAffectsWrapping = /$'/; + else if (safari) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/; + else if (chrome) spanAffectsWrapping = /\-[^ \-\.?]|\?[^ \-\.?\]\}:;!'\"\),\/]|[\.!\"#&%\)*+,:;=>\]|\}~][\(\{\[<]|\$'/; + + 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); + } + + // 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 moveOneUnit = byUnit ? function(pos, dir) { + do pos += dir; + while (pos > 0 && isExtendingChar.test(line.text.charAt(pos))); + return pos; + } : function(pos, dir) { return pos + dir; }; + var linedir = bidi[0].level; + for (var i = 0; i < bidi.length; ++i) { + var part = bidi[i], sticky = part.level % 2 == linedir; + if ((part.from < start && part.to > start) || + (sticky && (part.from == start || part.to == start))) break; + } + var target = moveOneUnit(start, part.level % 2 ? -dir : dir); + + while (target != null) { + if (part.level % 2 == linedir) { + if (target < part.from || target > part.to) { + part = bidi[i += dir]; + target = part && (dir > 0 == part.level % 2 ? moveOneUnit(part.to, -1) : moveOneUnit(part.from, 1)); + } else break; + } else { + if (target == bidiLeft(part)) { + part = bidi[--i]; + target = part && bidiRight(part); + } else if (target == bidiRight(part)) { + part = bidi[++i]; + target = part && bidiLeft(part); + } else break; + } + } + + return target < 0 || target > line.text.length ? null : target; + } + + 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+$/))) { + lst(order).to -= m[0].length; + order.push({from: len - m[0].length, to: len, level: 0}); + } + if (order[0].level != lst(order).level) + order.push({from: len, to: len, level: order[0].level}); + + return order; + }; + })(); + + // THE END + + CodeMirror.version = "3.1"; + + return CodeMirror; +})(); diff --git a/lib/codemirror.min.js b/lib/codemirror.min.js new file mode 100644 index 0000000..2b44b72 --- /dev/null +++ b/lib/codemirror.min.js @@ -0,0 +1,4 @@ +window.CodeMirror=function(){"use strict";function w(a,c){if(!(this instanceof w))return new w(a,c);this.options=c=c||{};for(var d in Mc)!c.hasOwnProperty(d)&&Mc.hasOwnProperty(d)&&(c[d]=Mc[d]);I(c);var e="string"==typeof 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b=a.display;te(b.scroller,"mousedown",vb(a,Kb)),te(b.scroller,"dblclick",vb(a,oe)),te(b.lineSpace,"selectstart",function(a){Gb(b,a)||oe(a)}),t||te(b.scroller,"contextmenu",function(b){cc(a,b)}),te(b.scroller,"scroll",function(){Ob(a,b.scroller.scrollTop),Pb(a,b.scroller.scrollLeft,!0),ve(a,"scroll",a)}),te(b.scrollbarV,"scroll",function(){Ob(a,b.scrollbarV.scrollTop)}),te(b.scrollbarH,"scroll",function(){Pb(a,b.scrollbarH.scrollLeft)}),te(b.scroller,"mousewheel",function(b){Sb(a,b)}),te(b.scroller,"DOMMouseScroll",function(b){Sb(a,b)}),te(b.scrollbarH,"mousedown",c),te(b.scrollbarV,"mousedown",c),te(b.wrapper,"scroll",function(){b.wrapper.scrollTop=b.wrapper.scrollLeft=0}),te(window,"resize",d),setTimeout(e,5e3),te(b.input,"keyup",vb(a,function(b){a.options.onKeyEvent&&a.options.onKeyEvent(a,ne(b))||16==b.keyCode&&(a.doc.sel.shift=!1)})),te(b.input,"input",Ne(Ab,a)),te(b.input,"keydown",vb(a,Zb)),te(b.input,"keypress",vb(a,$b)),te(b.input,"focus",Ne(_b,a)),te(b.input,"blur",Ne(ac,a)),a.options.dragDrop&&(te(b.scroller,"dragstart",function(b){Nb(a,b)}),te(b.scroller,"dragenter",f),te(b.scroller,"dragover",f),te(b.scroller,"drop",vb(a,Lb))),te(b.scroller,"paste",function(c){Gb(b,c)||(Db(a),Ab(a))}),te(b.input,"paste",function(){a.state.pasteIncoming=!0,Ab(a)}),te(b.input,"cut",g),te(b.input,"copy",g),j&&te(b.sizer,"mouseup",function(){document.activeElement==b.input&&b.input.blur(),Db(a)})}function Gb(a,b){for(var c=re(b);c!=a.wrapper;c=c.parentNode){if(!c)return!0;if(/\bCodeMirror-(?:line)?widget\b/.test(c.className)||c.parentNode==a.sizer&&c!=a.mover)return!0}}function Hb(a,b,c){var d=a.display;if(!c){var e=re(b);if(e==d.scrollbarH||e==d.scrollbarH.firstChild||e==d.scrollbarV||e==d.scrollbarV.firstChild||e==d.scrollbarFiller)return null}var f,g,h=We(d.lineSpace);try{f=b.clientX,g=b.clientY}catch(b){return null}return nb(a,f-h.left,g-h.top)}function Kb(a){function p(a){if("single"==j)return wc(c.doc,tc(f,h),a),void 0;if(n=tc(f,n),o=tc(f,o),"double"==j){var b=Jc(Wd(f,a.line).text,a);qc(a,n)?wc(c.doc,b.from,o):wc(c.doc,n,b.to)}else"triple"==j&&(qc(a,n)?wc(c.doc,o,tc(f,oc(a.line,0))):wc(c.doc,n,tc(f,oc(a.line+1,0))))}function s(a){var b=++r,e=Hb(c,a,!0);if(e)if(pc(e,l)){var h=a.clientYq.bottom?20:0;h&&setTimeout(vb(c,function(){r==b&&(d.scroller.scrollTop+=h,s(a))}),50)}else{c.state.focused||_b(c),l=e,p(e);var g=K(d,f);(e.line>=g.to||e.linei-400&&pc(Jb.pos,h))j="triple",oe(a),setTimeout(Ne(Db,c),20),Kc(c,h.line);else if(Ib&&Ib.time>i-400&&pc(Ib.pos,h)){j="double",Jb={time:i,pos:h},oe(a);var k=Jc(Wd(f,h.line).text,h);wc(c.doc,k.from,k.to)}else Ib={time:i,pos:h};var l=h;if(c.options.dragDrop&&Xe&&!Eb(c)&&!pc(g.from,g.to)&&!qc(h,g.from)&&!qc(g.to,h)&&"single"==j){var m=vb(c,function(b){e&&(d.scroller.draggable=!1),c.state.draggingText=!1,ue(document,"mouseup",m),ue(d.scroller,"drop",m),Math.abs(a.clientX-b.clientX)+Math.abs(a.clientY-b.clientY)<10&&(oe(b),wc(c.doc,h),Db(c))});return e&&(d.scroller.draggable=!0),c.state.draggingText=m,d.scroller.dragDrop&&d.scroller.dragDrop(),te(document,"mouseup",m),te(d.scroller,"drop",m),void 0}oe(a),"single"==j&&wc(c.doc,tc(f,h));var n=g.from,o=g.to,q=We(d.wrapper),r=0,v=vb(c,function(a){b||se(a)?s(a):u(a)}),w=vb(c,u);te(document,"mousemove",v),te(document,"mouseup",w)}}function Lb(a){var b=this;if(!(Gb(b.display,a)||b.options.onDragEvent&&b.options.onDragEvent(b,ne(a)))){oe(a);var c=Hb(b,a,!0),d=a.dataTransfer.files;if(c&&!Eb(b))if(d&&d.length&&window.FileReader&&window.File)for(var e=d.length,f=Array(e),g=0,h=function(a,d){var h=new FileReader;h.onload=function(){f[d]=h.result,++g==e&&(c=tc(b.doc,c),nc(b.doc,f.join(""),c,"around","paste"))},h.readAsText(a)},i=0;e>i;++i)h(d[i],i);else{if(b.state.draggingText&&!qc(c,b.doc.sel.from)&&!qc(b.doc.sel.to,c))return b.state.draggingText(a),setTimeout(Ne(Db,b),20),void 0;try{var f=a.dataTransfer.getData("Text");if(f){var j=b.doc.sel.from,k=b.doc.sel.to;yc(b.doc,c,c),b.state.draggingText&&nc(b.doc,"",j,k,"paste"),b.replaceSelection(f,null,"paste"),Db(b),_b(b)}}catch(a){}}}}function Mb(a,b){var c=a.display;try{var d=b.clientX,e=b.clientY}catch(b){return!1}if(d>=Math.floor(We(c.gutters).right))return!1;if(oe(b),!Ae(a,"gutterClick"))return!0;var f=We(c.lineDiv);if(e>f.bottom)return!0;e-=f.top-c.viewOffset;for(var g=0;g=d){var i=_d(a.doc,e),j=a.options.gutters[g];ye(a,"gutterClick",a,i,j,b);break}}return!0}function Nb(a,b){if(!Gb(a.display,b)){var c=a.getSelection();if(b.dataTransfer.setData("Text",c),b.dataTransfer.setDragImage&&!i){var d=Se("img",null,null,"position: fixed; left: 0; top: 0;");h&&(d.width=d.height=1,a.display.wrapper.appendChild(d),d._top=d.offsetTop),b.dataTransfer.setDragImage(d,0,0),h&&d.parentNode.removeChild(d)}}}function Ob(b,c){Math.abs(b.doc.scrollTop-c)<2||(b.doc.scrollTop=c,a||P(b,[],c),b.display.scroller.scrollTop!=c&&(b.display.scroller.scrollTop=c),b.display.scrollbarV.scrollTop!=c&&(b.display.scrollbarV.scrollTop=c),a&&P(b,[]))}function Pb(a,b,c){(c?b==a.doc.scrollLeft:Math.abs(a.doc.scrollLeft-b)<2)||(b=Math.min(b,a.display.scroller.scrollWidth-a.display.scroller.clientWidth),a.doc.scrollLeft=b,L(a),a.display.scroller.scrollLeft!=b&&(a.display.scroller.scrollLeft=b),a.display.scrollbarH.scrollLeft!=b&&(a.display.scrollbarH.scrollLeft=b))}function Sb(b,c){var d=c.wheelDeltaX,f=c.wheelDeltaY;if(null==d&&c.detail&&c.axis==c.HORIZONTAL_AXIS&&(d=c.detail),null==f&&c.detail&&c.axis==c.VERTICAL_AXIS?f=c.detail:null==f&&(f=c.wheelDelta),f&&p&&e)for(var g=c.target;g!=j;g=g.parentNode)if(g.lineObj){b.display.currentWheelTarget=g; +break}var i=b.display,j=i.scroller;if(d&&!a&&!h&&null!=Rb)return f&&Ob(b,Math.max(0,Math.min(j.scrollTop+f*Rb,j.scrollHeight-j.clientHeight))),Pb(b,Math.max(0,Math.min(j.scrollLeft+d*Rb,j.scrollWidth-j.clientWidth))),oe(c),i.wheelStartX=null,void 0;if(f&&null!=Rb){var k=f*Rb,l=b.doc.scrollTop,m=l+i.wrapper.clientHeight;0>k?l=Math.max(0,l+k-50):m=Math.min(b.doc.height,m+k+50),P(b,[],{top:l,bottom:m})}20>Qb&&(null==i.wheelStartX?(i.wheelStartX=j.scrollLeft,i.wheelStartY=j.scrollTop,i.wheelDX=d,i.wheelDY=f,setTimeout(function(){if(null!=i.wheelStartX){var a=j.scrollLeft-i.wheelStartX,b=j.scrollTop-i.wheelStartY,c=b&&i.wheelDY&&b/i.wheelDY||a&&i.wheelDX&&a/i.wheelDX;i.wheelStartX=i.wheelStartY=null,c&&(Rb=(Rb*Qb+c)/(Qb+1),++Qb)}},200)):(i.wheelDX+=d,i.wheelDY+=f))}function Tb(a,b,c){if("string"==typeof b&&(b=Vc[b],!b))return!1;a.display.pollingFast&&Bb(a)&&(a.display.pollingFast=!1);var d=a.doc,e=d.sel.shift,f=!1;try{Eb(a)&&(a.state.suppressEdits=!0),c&&(d.sel.shift=!1),f=b(a)!=Ce}finally{d.sel.shift=e,a.state.suppressEdits=!1}return f}function Ub(a){var b=a.state.keyMaps.slice(0);return b.push(a.options.keyMap),a.options.extraKeys&&b.unshift(a.options.extraKeys),b}function Wb(a,b){var c=Xc(a.options.keyMap),e=c.auto;clearTimeout(Vb),e&&!Zc(b)&&(Vb=setTimeout(function(){Xc(a.options.keyMap)==c&&(a.options.keyMap=e.call?e.call(null,a):e)},50));var f=$c(b,!0),g=!1;if(!f)return!1;var h=Ub(a);return g=b.shiftKey?Yc("Shift-"+f,h,function(b){return Tb(a,b,!0)})||Yc(f,h,function(b){return"string"==typeof b&&/^go[A-Z]/.test(b)?Tb(a,b):void 0}):Yc(f,h,function(b){return Tb(a,b)}),"stop"==g&&(g=!1),g&&(oe(b),$(a),d&&(b.oldKeyCode=b.keyCode,b.keyCode=0)),g}function Xb(a,b,c){var d=Yc("'"+c+"'",Ub(a),function(b){return Tb(a,b,!0)});return d&&(oe(b),$(a)),d}function Zb(a){var c=this;if(c.state.focused||_b(c),b&&27==a.keyCode&&(a.returnValue=!1),!c.options.onKeyEvent||!c.options.onKeyEvent(c,ne(a))){var d=a.keyCode;c.doc.sel.shift=16==d||a.shiftKey;var e=Wb(c,a);h&&(Yb=e?d:null,!e&&88==d&&!df&&(p?a.metaKey:a.ctrlKey)&&c.replaceSelection(""))}}function $b(a){var b=this;if(!b.options.onKeyEvent||!b.options.onKeyEvent(b,ne(a))){var c=a.keyCode,d=a.charCode;if(h&&c==Yb)return Yb=null,oe(a),void 0;if(!(h&&(!a.which||a.which<10)||j)||!Wb(b,a)){var e=String.fromCharCode(null==d?c:d);this.options.electricChars&&this.doc.mode.electricChars&&this.options.smartIndent&&!Eb(this)&&this.doc.mode.electricChars.indexOf(e)>-1&&setTimeout(vb(b,function(){Fc(b,b.doc.sel.to.line,"smart")}),75),Xb(b,a,e)||Ab(b)}}}function _b(a){"nocursor"!=a.options.readOnly&&(a.state.focused||(ve(a,"focus",a),a.state.focused=!0,-1==a.display.wrapper.className.search(/\bCodeMirror-focused\b/)&&(a.display.wrapper.className+=" CodeMirror-focused"),Cb(a,!0)),zb(a),$(a))}function ac(a){a.state.focused&&(ve(a,"blur",a),a.state.focused=!1,a.display.wrapper.className=a.display.wrapper.className.replace(" CodeMirror-focused","")),clearInterval(a.display.blinker),setTimeout(function(){a.state.focused||(a.doc.sel.shift=!1)},150)}function cc(a,c){function k(){if(e.inputDiv.style.position="relative",e.input.style.cssText=j,d&&(e.scrollbarV.scrollTop=e.scroller.scrollTop=i),zb(a),null!=e.input.selectionStart&&(!b||d)){clearTimeout(bc);var c=e.input.value=" "+(pc(f.from,f.to)?"":e.input.value),g=0;e.prevInput=" ",e.input.selectionStart=1,e.input.selectionEnd=c.length;var h=function(){" "==e.prevInput&&0==e.input.selectionStart?vb(a,Vc.selectAll)(a):g++<10?bc=setTimeout(h,500):Cb(a)};bc=setTimeout(h,200)}}var e=a.display,f=a.doc.sel;if(!Gb(e,c)){var g=Hb(a,c),i=e.scroller.scrollTop;if(g&&!h){(pc(f.from,f.to)||qc(g,f.from)||!qc(g,f.to))&&vb(a,yc)(a.doc,g,g);var j=e.input.style.cssText;if(e.inputDiv.style.position="absolute",e.input.style.cssText="position: fixed; width: 30px; height: 30px; top: "+(c.clientY-5)+"px; left: "+(c.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);",Db(a),Cb(a,!0),pc(f.from,f.to)&&(e.input.value=e.prevInput=" "),t){qe(c);var l=function(){ue(window,"mouseup",l),setTimeout(k,20)};te(window,"mouseup",l)}else setTimeout(k,50)}}}function dc(a){return oc(a.from.line+a.text.length-1,He(a.text).length+(1==a.text.length?a.from.ch:0))}function ec(a,b,c){if(!qc(b.from,c))return tc(a,c);var d=b.text.length-1-(b.to.line-b.from.line);if(c.line>b.to.line+d){var e=c.line-d,f=a.first+a.size-1;return e>f?oc(f,Wd(a,f).text.length):uc(c,Wd(a,e).text.length)}if(c.line==b.to.line+d)return uc(c,He(b.text).length+(1==b.text.length?b.from.ch:0)+Wd(a,b.to.line).text.length-b.to.ch);var g=c.line-b.from.line;return uc(c,b.text[g].length+(g?0:b.from.ch))}function fc(a,b,c){if(c&&"object"==typeof c)return{anchor:ec(a,b,c.anchor),head:ec(a,b,c.head)};if("start"==c)return{anchor:b.from,head:b.from};var d=dc(b);if("around"==c)return{anchor:b.from,head:d};if("end"==c)return{anchor:d,head:d};var e=function(a){if(qc(a,b.from))return a;if(!qc(b.to,a))return d;var c=a.line+b.text.length-(b.to.line-b.from.line)-1,e=a.ch;return a.line==b.to.line&&(e+=d.ch-b.to.ch),oc(c,e)};return{anchor:e(a.sel.anchor),head:e(a.sel.head)}}function gc(a,b){var c={canceled:!1,from:b.from,to:b.to,text:b.text,origin:b.origin,update:function(b,c,d,e){b&&(this.from=tc(a,b)),c&&(this.to=tc(a,c)),d&&(this.text=d),void 0!==e&&(this.origin=e)},cancel:function(){this.canceled=!0}};return ve(a,"beforeChange",a,c),a.cm&&ve(a.cm,"beforeChange",a.cm,c),c.canceled?null:{from:c.from,to:c.to,text:c.text,origin:c.origin}}function hc(a,b,c,d){if(a.cm){if(!a.cm.curOp)return vb(a.cm,hc)(a,b,c,d);if(a.cm.state.suppressEdits)return}if(!(Ae(a,"beforeChange")||a.cm&&Ae(a.cm,"beforeChange"))||(b=gc(a,b))){var e=u&&!d&&ld(a,b.from,b.to);if(e){for(var f=e.length-1;f>=1;--f)ic(a,{from:e[f].from,to:e[f].to,text:[""]});e.length&&ic(a,{from:e[0].from,to:e[0].to,text:b.text},c)}else ic(a,b,c)}}function ic(a,b,c){var d=fc(a,b,c);fe(a,b,d,a.cm?a.cm.curOp.id:0/0),lc(a,b,d,jd(a,b));var e=[];Ud(a,function(a,c){c||-1!=Je(e,a.history)||(le(a.history,b),e.push(a.history)),lc(a,b,null,jd(a,b))})}function jc(a,b){var c=a.history,d=("undo"==b?c.done:c.undone).pop();if(d){c.dirtyCounter+="undo"==b?-1:1;var e={changes:[],anchorBefore:d.anchorAfter,headBefore:d.headAfter,anchorAfter:d.anchorBefore,headAfter:d.headBefore};("undo"==b?c.undone:c.done).push(e);for(var f=d.changes.length-1;f>=0;--f){var g=d.changes[f];g.origin=b,e.changes.push(ee(a,g));var h=f?fc(a,g,null):{anchor:d.anchorBefore,head:d.headBefore};lc(a,g,h,kd(a,g));var i=[];Ud(a,function(a,b){b||-1!=Je(i,a.history)||(le(a.history,g),i.push(a.history)),lc(a,g,null,kd(a,g))})}}}function kc(a,b){function c(a){return oc(a.line+b,a.ch)}a.first+=b,a.cm&&yb(a.cm,a.first,a.first,b),a.sel.head=c(a.sel.head),a.sel.anchor=c(a.sel.anchor),a.sel.from=c(a.sel.from),a.sel.to=c(a.sel.to)}function lc(a,b,c,d){if(a.cm&&!a.cm.curOp)return vb(a.cm,lc)(a,b,c,d);if(b.to.linea.lastLine())){if(b.from.linef&&(b={from:b.from,to:oc(f,Wd(a,f).text.length),text:[b.text[0]],origin:b.origin}),c||(c=fc(a,b,null)),a.cm?mc(a.cm,b,d,c):Nd(a,b,d,c)}}function mc(a,b,c,d){var e=a.doc,f=a.display,g=b.from,h=b.to,i=!1,j=g.line;a.options.lineWrapping||(j=$d(pd(e,Wd(e,g.line))),e.iter(j,h.line+1,function(a){return a==f.maxLine?(i=!0,!0):void 0})),Nd(e,b,c,d,A(a)),a.options.lineWrapping||(e.iter(j,g.line+b.text.length,function(a){var 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+.mergely.a.rhs.start { border-top: 1px solid #a3d1ff; } +.mergely.a.lhs.start.end, +.mergely.a.rhs.end { border-bottom: 1px solid #a3d1ff; } +.mergely.a.rhs { background-color: #ddeeff; } +.mergely.a.lhs.start.end.first { border-bottom: 0; border-top: 1px solid #a3d1ff; } + +.mergely.d.lhs { background-color: #edc0c0; } +.mergely.d.lhs.end, +.mergely.d.rhs.start.end { border-bottom: 1px solid #ff7f7f; } +.mergely.d.rhs.start.end.first { border-bottom: 0; border-top: 1px solid #ff7f7f; } +.mergely.d.lhs.start { border-top: 1px solid #ff7f7f; } + +.mergely.c.lhs, +.mergely.c.rhs { background-color: #fafafa; } +.mergely.c.lhs.start, +.mergely.c.rhs.start { border-top: 1px solid #a3a3a3; } +.mergely.c.lhs.end, +.mergely.c.rhs.end { border-bottom: 1px solid #a3a3a3; } + +.mergely.ch.a.rhs { background-color: #ddeeff; } +.mergely.ch.d.lhs { background-color: #edc0c0; text-decoration: line-through; color: #888; } diff --git a/lib/mergely.js b/lib/mergely.js new file mode 100644 index 0000000..689c543 --- /dev/null +++ b/lib/mergely.js @@ -0,0 +1,1576 @@ +/** + * Copyright (c) 2014 by Jamie Peabody, http://www.mergely.com + * All rights reserved. + * Version: 3.3.7 2014-08-17 + */ +Mgly = {}; + +Mgly.Timer = function(){ + var self = this; + self.start = function() { self.t0 = new Date().getTime(); } + self.stop = function() { + var t1 = new Date().getTime(); + var d = t1 - self.t0; + self.t0 = t1; + return d; + } + self.start(); +} + +Mgly.ChangeExpression = new RegExp(/(^(?![><-])*\d+(?:,\d+)?)([acd])(\d+(?:,\d+)?)/); + +Mgly.DiffParser = function(diff) { + var changes = []; + var change_id = 0; + // parse diff + var diff_lines = diff.split(/\n/); + for (var i = 0; i < diff_lines.length; ++i) { + if (diff_lines[i].length == 0) continue; + var change = {}; + var test = Mgly.ChangeExpression.exec(diff_lines[i]); + if (test == null) continue; + // lines are zero-based + var fr = test[1].split(','); + change['lhs-line-from'] = fr[0] - 1; + if (fr.length == 1) change['lhs-line-to'] = fr[0] - 1; + else change['lhs-line-to'] = fr[1] - 1; + var to = test[3].split(','); + change['rhs-line-from'] = to[0] - 1; + if (to.length == 1) change['rhs-line-to'] = to[0] - 1; + else change['rhs-line-to'] = to[1] - 1; + change['op'] = test[2]; + changes[change_id++] = change; + } + return changes; +} + +Mgly.sizeOf = function(obj) { + var size = 0, key; + for (key in obj) { + if (obj.hasOwnProperty(key)) size++; + } + return size; +} + +Mgly.LCS = function(x, y) { + this.x = x.replace(/[ ]{1}/g, '\n'); + this.y = y.replace(/[ ]{1}/g, '\n'); +} +jQuery.extend(Mgly.LCS.prototype, { + clear: function() { this.ready = 0; }, + diff: function(added, removed) { + var d = new Mgly.diff(this.x, this.y, {ignorews: false}); + var changes = Mgly.DiffParser(d.normal_form()); + var li = 0, lj = 0; + for (var i = 0; i < changes.length; ++i) { + var change = changes[i]; + if (change.op != 'a') { + // find the starting index of the line + li = d.getLines('lhs').slice(0, change['lhs-line-from']).join(' ').length; + // get the index of the the span of the change + lj = change['lhs-line-to'] + 1; + // get the changed text + var lchange = d.getLines('lhs').slice(change['lhs-line-from'], lj).join(' '); + if (change.op == 'd') lchange += ' ';// include the leading space + else if (li > 0 && change.op == 'c') li += 1; // ignore leading space if not first word + // output the changed index and text + removed(li, li + lchange.length); + } + if (change.op != 'd') { + // find the starting index of the line + li = d.getLines('rhs').slice(0, change['rhs-line-from']).join(' ').length; + // get the index of the the span of the change + lj = change['rhs-line-to'] + 1; + // get the changed text + var rchange = d.getLines('rhs').slice(change['rhs-line-from'], lj).join(' '); + if (change.op == 'a') rchange += ' ';// include the leading space + else if (li > 0 && change.op == 'c') li += 1; // ignore leading space if not first word + // output the changed index and text + added(li, li + rchange.length); + } + } + } +}); + +Mgly.CodeifyText = function(settings) { + this._max_code = 0; + this._diff_codes = {}; + this.ctxs = {}; + this.options = {ignorews: false}; + jQuery.extend(this, settings); + this.lhs = settings.lhs.split('\n'); + this.rhs = settings.rhs.split('\n'); +} + +jQuery.extend(Mgly.CodeifyText.prototype, { + getCodes: function(side) { + if (!this.ctxs.hasOwnProperty(side)) { + var ctx = this._diff_ctx(this[side]); + this.ctxs[side] = ctx; + ctx.codes.length = Object.keys(ctx.codes).length; + } + return this.ctxs[side].codes; + }, + getLines: function(side) { + return this.ctxs[side].lines; + }, + _diff_ctx: function(lines) { + var ctx = {i: 0, codes: {}, lines: lines}; + this._codeify(lines, ctx); + return ctx; + }, + _codeify: function(lines, ctx) { + var code = this._max_code; + for (var i = 0; i < lines.length; ++i) { + var line = lines[i]; + if (this.options.ignorews) { + line = line.replace(/\s+/g, ''); + } + var aCode = this._diff_codes[line]; + if (aCode != undefined) { + ctx.codes[i] = aCode; + } + else { + this._max_code++; + this._diff_codes[line] = this._max_code; + ctx.codes[i] = this._max_code; + } + } + } +}); + +Mgly.diff = function(lhs, rhs, options) { + var opts = jQuery.extend({ignorews: false}, options); + this.codeify = new Mgly.CodeifyText({ + lhs: lhs, + rhs: rhs, + options: opts + }); + var lhs_ctx = { + codes: this.codeify.getCodes('lhs'), + modified: {} + }; + var rhs_ctx = { + codes: this.codeify.getCodes('rhs'), + modified: {} + }; + var max = (lhs_ctx.codes.length + rhs_ctx.codes.length + 1); + var vector_d = Array( 2 * max + 2 ); + var vector_u = Array( 2 * max + 2 ); + this._lcs(lhs_ctx, 0, lhs_ctx.codes.length, rhs_ctx, 0, rhs_ctx.codes.length, vector_u, vector_d); + this._optimize(lhs_ctx); + this._optimize(rhs_ctx); + this.items = this._create_diffs(lhs_ctx, rhs_ctx); +}; + +jQuery.extend(Mgly.diff.prototype, { + changes: function() { return this.items; }, + getLines: function(side) { + return this.codeify.getLines(side); + }, + normal_form: function() { + var nf = ''; + for (var index = 0; index < this.items.length; ++index) { + var item = this.items[index]; + var lhs_str = ''; + var rhs_str = ''; + var change = 'c'; + if (item.lhs_deleted_count == 0 && item.rhs_inserted_count > 0) change = 'a'; + else if (item.lhs_deleted_count > 0 && item.rhs_inserted_count == 0) change = 'd'; + + if (item.lhs_deleted_count == 1) lhs_str = item.lhs_start + 1; + else if (item.lhs_deleted_count == 0) lhs_str = item.lhs_start; + else lhs_str = (item.lhs_start + 1) + ',' + (item.lhs_start + item.lhs_deleted_count); + + if (item.rhs_inserted_count == 1) rhs_str = item.rhs_start + 1; + else if (item.rhs_inserted_count == 0) rhs_str = item.rhs_start; + else rhs_str = (item.rhs_start + 1) + ',' + (item.rhs_start + item.rhs_inserted_count); + nf += lhs_str + change + rhs_str + '\n'; + + var lhs_lines = this.getLines('lhs'); + var rhs_lines = this.getLines('rhs'); + if (rhs_lines && lhs_lines) { + // if rhs/lhs lines have been retained, output contextual diff + for (var i = item.lhs_start; i < item.lhs_start + item.lhs_deleted_count; ++i) { + nf += '< ' + lhs_lines[i] + '\n'; + } + if (item.rhs_inserted_count && item.lhs_deleted_count) nf += '---\n'; + for (var i = item.rhs_start; i < item.rhs_start + item.rhs_inserted_count; ++i) { + nf += '> ' + rhs_lines[i] + '\n'; + } + } + } + return nf; + }, + _lcs: function(lhs_ctx, lhs_lower, lhs_upper, rhs_ctx, rhs_lower, rhs_upper, vector_u, vector_d) { + while ( (lhs_lower < lhs_upper) && (rhs_lower < rhs_upper) && (lhs_ctx.codes[lhs_lower] == rhs_ctx.codes[rhs_lower]) ) { + ++lhs_lower; + ++rhs_lower; + } + while ( (lhs_lower < lhs_upper) && (rhs_lower < rhs_upper) && (lhs_ctx.codes[lhs_upper - 1] == rhs_ctx.codes[rhs_upper - 1]) ) { + --lhs_upper; + --rhs_upper; + } + if (lhs_lower == lhs_upper) { + while (rhs_lower < rhs_upper) { + rhs_ctx.modified[ rhs_lower++ ] = true; + } + } + else if (rhs_lower == rhs_upper) { + while (lhs_lower < lhs_upper) { + lhs_ctx.modified[ lhs_lower++ ] = true; + } + } + else { + var sms = this._sms(lhs_ctx, lhs_lower, lhs_upper, rhs_ctx, rhs_lower, rhs_upper, vector_u, vector_d); + this._lcs(lhs_ctx, lhs_lower, sms.x, rhs_ctx, rhs_lower, sms.y, vector_u, vector_d); + this._lcs(lhs_ctx, sms.x, lhs_upper, rhs_ctx, sms.y, rhs_upper, vector_u, vector_d); + } + }, + _sms: function(lhs_ctx, lhs_lower, lhs_upper, rhs_ctx, rhs_lower, rhs_upper, vector_u, vector_d) { + var max = lhs_ctx.codes.length + rhs_ctx.codes.length + 1; + var kdown = lhs_lower - rhs_lower; + var kup = lhs_upper - rhs_upper; + var delta = (lhs_upper - lhs_lower) - (rhs_upper - rhs_lower); + var odd = (delta & 1) != 0; + var offset_down = max - kdown; + var offset_up = max - kup; + var maxd = ((lhs_upper - lhs_lower + rhs_upper - rhs_lower) / 2) + 1; + vector_d[ offset_down + kdown + 1 ] = lhs_lower; + vector_u[ offset_up + kup - 1 ] = lhs_upper; + var ret = {x:0,y:0}; + for (var d = 0; d <= maxd; ++d) { + for (var k = kdown - d; k <= kdown + d; k += 2) { + var x, y; + if (k == kdown - d) { + x = vector_d[ offset_down + k + 1 ];//down + } + else { + x = vector_d[ offset_down + k - 1 ] + 1;//right + if ((k < (kdown + d)) && (vector_d[ offset_down + k + 1 ] >= x)) { + x = vector_d[ offset_down + k + 1 ];//down + } + } + y = x - k; + // find the end of the furthest reaching forward D-path in diagonal k. + while ((x < lhs_upper) && (y < rhs_upper) && (lhs_ctx.codes[x] == rhs_ctx.codes[y])) { + x++; y++; + } + vector_d[ offset_down + k ] = x; + // overlap ? + if (odd && (kup - d < k) && (k < kup + d)) { + if (vector_u[offset_up + k] <= vector_d[offset_down + k]) { + ret.x = vector_d[offset_down + k]; + ret.y = vector_d[offset_down + k] - k; + return (ret); + } + } + } + // Extend the reverse path. + for (var k = kup - d; k <= kup + d; k += 2) { + // find the only or better starting point + var x, y; + if (k == kup + d) { + x = vector_u[offset_up + k - 1]; // up + } else { + x = vector_u[offset_up + k + 1] - 1; // left + if ((k > kup - d) && (vector_u[offset_up + k - 1] < x)) + x = vector_u[offset_up + k - 1]; // up + } + y = x - k; + while ((x > lhs_lower) && (y > rhs_lower) && (lhs_ctx.codes[x - 1] == rhs_ctx.codes[y - 1])) { + // diagonal + x--; + y--; + } + vector_u[offset_up + k] = x; + // overlap ? + if (!odd && (kdown - d <= k) && (k <= kdown + d)) { + if (vector_u[offset_up + k] <= vector_d[offset_down + k]) { + ret.x = vector_d[offset_down + k]; + ret.y = vector_d[offset_down + k] - k; + return (ret); + } + } + } + } + throw "the algorithm should never come here."; + }, + _optimize: function(ctx) { + var start = 0, end = 0; + while (start < ctx.length) { + while ((start < ctx.length) && (ctx.modified[start] == undefined || ctx.modified[start] == false)) { + start++; + } + end = start; + while ((end < ctx.length) && (ctx.modified[end] == true)) { + end++; + } + if ((end < ctx.length) && (ctx.ctx[start] == ctx.codes[end])) { + ctx.modified[start] = false; + ctx.modified[end] = true; + } + else { + start = end; + } + } + }, + _create_diffs: function(lhs_ctx, rhs_ctx) { + var items = []; + var lhs_start = 0, rhs_start = 0; + var lhs_line = 0, rhs_line = 0; + + while (lhs_line < lhs_ctx.codes.length || rhs_line < rhs_ctx.codes.length) { + if ((lhs_line < lhs_ctx.codes.length) && (!lhs_ctx.modified[lhs_line]) + && (rhs_line < rhs_ctx.codes.length) && (!rhs_ctx.modified[rhs_line])) { + // equal lines + lhs_line++; + rhs_line++; + } + else { + // maybe deleted and/or inserted lines + lhs_start = lhs_line; + rhs_start = rhs_line; + + while (lhs_line < lhs_ctx.codes.length && (rhs_line >= rhs_ctx.codes.length || lhs_ctx.modified[lhs_line])) + lhs_line++; + + while (rhs_line < rhs_ctx.codes.length && (lhs_line >= lhs_ctx.codes.length || rhs_ctx.modified[rhs_line])) + rhs_line++; + + if ((lhs_start < lhs_line) || (rhs_start < rhs_line)) { + // store a new difference-item + items.push({ + lhs_start: lhs_start, + rhs_start: rhs_start, + lhs_deleted_count: lhs_line - lhs_start, + rhs_inserted_count: rhs_line - rhs_start + }); + } + } + } + return items; + } +}); + +Mgly.mergely = function(el, options) { + if (el) { + this.init(el, options); + } +}; + +jQuery.extend(Mgly.mergely.prototype, { + name: 'mergely', + //http://jupiterjs.com/news/writing-the-perfect-jquery-plugin + init: function(el, options) { + this.diffView = new Mgly.CodeMirrorDiffView(el, options); + this.bind(el); + }, + bind: function(el) { + this.diffView.bind(el); + } +}); + +Mgly.CodeMirrorDiffView = function(el, options) { + CodeMirror.defineExtension('centerOnCursor', function() { + var coords = this.cursorCoords(null, 'local'); + this.scrollTo(null, + (coords.y + coords.yBot) / 2 - (this.getScrollerElement().clientHeight / 2)); + }); + this.init(el, options); +}; + +jQuery.extend(Mgly.CodeMirrorDiffView.prototype, { + init: function(el, options) { + this.settings = { + autoupdate: true, + autoresize: true, + rhs_margin: 'right', + lcs: true, + sidebar: true, + viewport: false, + ignorews: false, + fadein: 'fast', + editor_width: '650px', + editor_height: '400px', + resize_timeout: 500, + change_timeout: 150, + fgcolor: {a:'#4ba3fa',c:'#a3a3a3',d:'#ff7f7f', // color for differences (soft color) + ca:'#4b73ff',cc:'#434343',cd:'#ff4f4f'}, // color for currently active difference (bright color) + bgcolor: '#eee', + vpcolor: 'rgba(0, 0, 200, 0.5)', + lhs: function(setValue) { }, + rhs: function(setValue) { }, + loaded: function() { }, + _auto_width: function(w) { return w; }, + resize: function(init) { + var scrollbar = init ? 16 : 0; + var w = jQuery(el).parent().width() + scrollbar; + if (this.width == 'auto') { + w = this._auto_width(w); + } + else { + w = this.width; + this.editor_width = w; + } + if (this.height == 'auto') { + //h = this._auto_height(h); + h = jQuery(el).parent().height(); + } + else { + h = this.height; + this.editor_height = h; + } + var content_width = w / 2.0 - 2 * 8 - 8; + var content_height = h; + var self = jQuery(el); + self.find('.mergely-column').css({ width: content_width + 'px' }); + self.find('.mergely-column, .mergely-canvas, .mergely-margin, .mergely-column textarea, .CodeMirror-scroll, .cm-s-default').css({ height: content_height + 'px' }); + self.find('.mergely-canvas').css({ height: content_height + 'px' }); + self.find('.mergely-column textarea').css({ width: content_width + 'px' }); + self.css({ width: w, height: h, clear: 'both' }); + if (self.css('display') == 'none') { + if (this.fadein != false) self.fadeIn(this.fadein); + else self.show(); + if (this.loaded) this.loaded(); + } + if (this.resized) this.resized(); + }, + _debug: '', //scroll,draw,calc,diff,markup,change + resized: function() { } + }; + var cmsettings = { + mode: 'text/plain', + readOnly: false, + lineWrapping: false, + lineNumbers: true, + gutters: ['merge', 'CodeMirror-linenumbers'] + } + this.lhs_cmsettings = {}; + this.rhs_cmsettings = {}; + + // save this element for faster queries + this.element = jQuery(el); + + // save options if there are any + if (options && options.cmsettings) jQuery.extend(this.lhs_cmsettings, cmsettings, options.cmsettings, options.lhs_cmsettings); + if (options && options.cmsettings) jQuery.extend(this.rhs_cmsettings, cmsettings, options.cmsettings, options.rhs_cmsettings); + if (options) jQuery.extend(this.settings, options); + + // bind if the element is destroyed + this.element.bind('destroyed', jQuery.proxy(this.teardown, this)); + + // save this instance in jQuery data, binding this view to the node + jQuery.data(el, 'mergely', this); + }, + unbind: function() { + if (this.changed_timeout != null) clearTimeout(this.changed_timeout); + this.editor[this.id + '-lhs'].toTextArea(); + this.editor[this.id + '-rhs'].toTextArea(); + }, + destroy: function() { + this.element.unbind('destroyed', this.teardown); + this.teardown(); + }, + teardown: function() { + this.unbind(); + }, + lhs: function(text) { + this.editor[this.id + '-lhs'].setValue(text); + }, + rhs: function(text) { + this.editor[this.id + '-rhs'].setValue(text); + }, + update: function() { + this._changing(this.id + '-lhs', this.id + '-rhs'); + }, + unmarkup: function() { + this._clear(); + }, + scrollToDiff: function(direction) { + if (!this.changes.length) return; + if (direction == 'next') { + this._current_diff = Math.min(++this._current_diff, this.changes.length - 1); + } + else { + this._current_diff = Math.max(--this._current_diff, 0); + } + this._scroll_to_change(this.changes[this._current_diff]); + this._changed(this.id + '-lhs', this.id + '-rhs'); + }, + mergeCurrentChange: function(side) { + if (!this.changes.length) return; + if (side == 'lhs' && !this.lhs_cmsettings.readOnly) { + this._merge_change(this.changes[this._current_diff], 'rhs', 'lhs'); + } + else if (side == 'rhs' && !this.rhs_cmsettings.readOnly) { + this._merge_change(this.changes[this._current_diff], 'lhs', 'rhs'); + } + }, + scrollTo: function(side, num) { + var le = this.editor[this.id + '-lhs']; + var re = this.editor[this.id + '-rhs']; + if (side == 'lhs') { + le.setCursor(num); + le.centerOnCursor(); + } + else { + re.setCursor(num); + re.centerOnCursor(); + } + }, + options: function(opts) { + if (opts) { + jQuery.extend(this.settings, opts); + if (this.settings.autoresize) this.resize(); + if (this.settings.autoupdate) this.update(); + if (this.settings.hasOwnProperty('rhs_margin')) { + // dynamically swap the margin + if (this.settings.rhs_margin == 'left') { + this.element.find('.mergely-margin:last-child').insertAfter( + this.element.find('.mergely-canvas')); + } + else { + var target = this.element.find('.mergely-margin').last(); + target.appendTo(target.parent()); + } + } + if (this.settings.hasOwnProperty('sidebar')) { + // dynamically enable sidebars + if (this.settings.sidebar) { + jQuery(this.element).find('.mergely-margin').css({display: 'block'}); + } + else { + jQuery(this.element).find('.mergely-margin').css({display: 'none'}); + } + } + } + else { + return this.settings; + } + }, + swap: function() { + if (this.lhs_cmsettings.readOnly || this.rhs_cmsettings.readOnly) return; + var le = this.editor[this.id + '-lhs']; + var re = this.editor[this.id + '-rhs']; + var tmp = re.getValue(); + re.setValue(le.getValue()); + le.setValue(tmp); + }, + merge: function(side) { + var le = this.editor[this.id + '-lhs']; + var re = this.editor[this.id + '-rhs']; + if (side == 'lhs' && !this.lhs_cmsettings.readOnly) le.setValue(re.getValue()); + else if (!this.rhs_cmsettings.readOnly) re.setValue(le.getValue()); + }, + get: function(side) { + var ed = this.editor[this.id + '-' + side]; + var t = ed.getValue(); + if (t == undefined) return ''; + return t; + }, + clear: function(side) { + if (side == 'lhs' && this.lhs_cmsettings.readOnly) return; + if (side == 'rhs' && this.rhs_cmsettings.readOnly) return; + var ed = this.editor[this.id + '-' + side]; + ed.setValue(''); + }, + cm: function(side) { + return this.editor[this.id + '-' + side]; + }, + search: function(side, query, direction) { + var le = this.editor[this.id + '-lhs']; + var re = this.editor[this.id + '-rhs']; + var editor; + if (side == 'lhs') editor = le; + else editor = re; + direction = (direction == 'prev') ? 'findPrevious' : 'findNext'; + if ((editor.getSelection().length == 0) || (this.prev_query[side] != query)) { + this.cursor[this.id] = editor.getSearchCursor(query, { line: 0, ch: 0 }, false); + this.prev_query[side] = query; + } + var cursor = this.cursor[this.id]; + + if (cursor[direction]()) { + editor.setSelection(cursor.from(), cursor.to()); + } + else { + cursor = editor.getSearchCursor(query, { line: 0, ch: 0 }, false); + } + }, + resize: function() { + this.settings.resize(); + this._changing(this.id + '-lhs', this.id + '-rhs'); + this._set_top_offset(this.id + '-lhs'); + }, + diff: function() { + var lhs = this.editor[this.id + '-lhs'].getValue(); + var rhs = this.editor[this.id + '-rhs'].getValue(); + var d = new Mgly.diff(lhs, rhs, this.settings); + return d.normal_form(); + }, + bind: function(el) { + jQuery(this.element).hide();//hide + this.id = jQuery(el).attr('id'); + var height = this.settings.editor_height; + var width = this.settings.editor_width; + this.changed_timeout = null; + this.chfns = {}; + this.chfns[this.id + '-lhs'] = []; + this.chfns[this.id + '-rhs'] = []; + this.prev_query = []; + this.cursor = []; + this._skipscroll = {}; + this.change_exp = new RegExp(/(\d+(?:,\d+)?)([acd])(\d+(?:,\d+)?)/); + var merge_lhs_button; + var merge_rhs_button; + if (jQuery.button != undefined) { + //jquery ui + merge_lhs_button = ''; + merge_rhs_button = ''; + } + else { + // homebrew + var style = 'opacity:0.4;width:10px;height:15px;background-color:#888;cursor:pointer;text-align:center;color:#eee;border:1px solid: #222;margin-right:5px;margin-top: -2px;'; + merge_lhs_button = '
<
'; + merge_rhs_button = '
>
'; + } + this.merge_rhs_button = jQuery(merge_rhs_button); + this.merge_lhs_button = jQuery(merge_lhs_button); + + // create the textarea and canvas elements + jQuery(this.element).append(jQuery('
')); + jQuery(this.element).append(jQuery('
')); + jQuery(this.element).append(jQuery('
')); + var rmargin = jQuery('
'); + if (!this.settings.sidebar) { + jQuery(this.element).find('.mergely-margin').css({display: 'none'}); + } + if (this.settings.rhs_margin == 'left') { + jQuery(this.element).append(rmargin); + } + jQuery(this.element).append(jQuery('
')); + if (this.settings.rhs_margin != 'left') { + jQuery(this.element).append(rmargin); + } + //codemirror + var cmstyle = '#' + this.id + ' .CodeMirror-gutter-text { padding: 5px 0 0 0; }' + + '#' + this.id + ' .CodeMirror-lines pre, ' + '#' + this.id + ' .CodeMirror-gutter-text pre { line-height: 18px; }' + + '.CodeMirror-linewidget { overflow: hidden; };'; + if (this.settings.autoresize) { + cmstyle += this.id + ' .CodeMirror-scroll { height: 100%; overflow: auto; }'; + } + // adjust the margin line height + cmstyle += '\n.CodeMirror { line-height: 18px; }'; + jQuery('').appendTo('head'); + + //bind + var rhstx = jQuery('#' + this.id + '-rhs').get(0); + if (!rhstx) { + console.error('rhs textarea not defined - Mergely not initialized properly'); + return; + } + var lhstx = jQuery('#' + this.id + '-lhs').get(0); + if (!rhstx) { + console.error('lhs textarea not defined - Mergely not initialized properly'); + return; + } + var self = this; + this.editor = []; + this.editor[this.id + '-lhs'] = CodeMirror.fromTextArea(lhstx, this.lhs_cmsettings); + this.editor[this.id + '-rhs'] = CodeMirror.fromTextArea(rhstx, this.rhs_cmsettings); + this.editor[this.id + '-lhs'].on('change', function(){ if (self.settings.autoupdate) self._changing(self.id + '-lhs', self.id + '-rhs'); }); + this.editor[this.id + '-lhs'].on('scroll', function(){ self._scrolling(self.id + '-lhs'); }); + this.editor[this.id + '-rhs'].on('change', function(){ if (self.settings.autoupdate) self._changing(self.id + '-lhs', self.id + '-rhs'); }); + this.editor[this.id + '-rhs'].on('scroll', function(){ self._scrolling(self.id + '-rhs'); }); + // resize + if (this.settings.autoresize) { + var sz_timeout1 = null; + var sz = function(init) { + //self.em_height = null; //recalculate + if (self.settings.resize) self.settings.resize(init); + self.editor[self.id + '-lhs'].refresh(); + self.editor[self.id + '-rhs'].refresh(); + if (self.settings.autoupdate) { + self._changing(self.id + '-lhs', self.id + '-rhs'); + } + } + jQuery(window).resize( + function () { + if (sz_timeout1) clearTimeout(sz_timeout1); + sz_timeout1 = setTimeout(sz, self.settings.resize_timeout); + } + ); + sz(true); + } + //bind + + if (this.settings.lhs) { + var setv = this.editor[this.id + '-lhs'].getDoc().setValue; + this.settings.lhs(setv.bind(this.editor[this.id + '-lhs'].getDoc())); + } + if (this.settings.rhs) { + var setv = this.editor[this.id + '-rhs'].getDoc().setValue; + this.settings.rhs(setv.bind(this.editor[this.id + '-rhs'].getDoc())); + } + }, + + _scroll_to_change : function(change) { + if (!change) return; + var self = this; + var led = self.editor[self.id+'-lhs']; + var red = self.editor[self.id+'-rhs']; + + var yref = led.getScrollerElement().offsetHeight * 1/2; // center between >0 and 1/2 + + // set cursors + led.setCursor(Math.max(change["lhs-line-from"],0), 0); // use led.getCursor().ch ? + red.setCursor(Math.max(change["rhs-line-from"],0), 0); + + // using directly CodeMirror breaks canvas alignment + // var ly = led.charCoords({line: Math.max(change["lhs-line-from"],0), ch: 0}, "local").top; + + // calculate scroll offset for current change. Warning: returns relative y position so we scroll to 0 first. + led.scrollTo(null, 0); + red.scrollTo(null, 0); + self._calculate_offsets(self.id+'-lhs', self.id+'-rhs', [change]); + led.scrollTo(null, Math.max(change["lhs-y-start"]-yref, 0)); + red.scrollTo(null, Math.max(change["rhs-y-start"]-yref, 0)); + // right pane should simply follows + }, + + _scrolling: function(editor_name) { + if (this._skipscroll[editor_name] === true) { + // scrolling one side causes the other to event - ignore it + this._skipscroll[editor_name] = false; + return; + } + var scroller = jQuery(this.editor[editor_name].getScrollerElement()); + if (this.midway == undefined) { + this.midway = (scroller.height() / 2.0 + scroller.offset().top).toFixed(2); + } + // balance-line + var midline = this.editor[editor_name].coordsChar({left:0, top:this.midway}); + var top_to = scroller.scrollTop(); + var left_to = scroller.scrollLeft(); + + this.trace('scroll', 'side', editor_name); + this.trace('scroll', 'midway', this.midway); + this.trace('scroll', 'midline', midline); + this.trace('scroll', 'top_to', top_to); + this.trace('scroll', 'left_to', left_to); + + var editor_name1 = this.id + '-lhs'; + var editor_name2 = this.id + '-rhs'; + + for (var name in this.editor) { + if (!this.editor.hasOwnProperty(name)) continue; + if (editor_name == name) continue; //same editor + var this_side = editor_name.replace(this.id + '-', ''); + var other_side = name.replace(this.id + '-', ''); + var top_adjust = 0; + + // find the last change that is less than or within the midway point + // do not move the rhs until the lhs end point is >= the rhs end point. + var last_change = null; + var force_scroll = false; + for (var i = 0; i < this.changes.length; ++i) { + var change = this.changes[i]; + if ((midline.line >= change[this_side+'-line-from'])) { + last_change = change; + if (midline.line >= last_change[this_side+'-line-to']) { + if (!change.hasOwnProperty(this_side+'-y-start') || + !change.hasOwnProperty(this_side+'-y-end') || + !change.hasOwnProperty(other_side+'-y-start') || + !change.hasOwnProperty(other_side+'-y-end')){ + // change outside of viewport + force_scroll = true; + } + else { + top_adjust += + (change[this_side+'-y-end'] - change[this_side+'-y-start']) - + (change[other_side+'-y-end'] - change[other_side+'-y-start']); + } + } + } + } + + var vp = this.editor[name].getViewport(); + var scroll = true; + if (last_change) { + this.trace('scroll', 'last change before midline', last_change); + if (midline.line >= vp.from && midline <= vp.to) { + scroll = false; + } + } + this.trace('scroll', 'scroll', scroll); + if (scroll || force_scroll) { + // scroll the other side + this.trace('scroll', 'scrolling other side', top_to - top_adjust); + var scroller = jQuery(this.editor[name].getScrollerElement()); + this._skipscroll[name] = true;//disable next event + scroller.scrollTop(top_to - top_adjust).scrollLeft(left_to); + } + else this.trace('scroll', 'not scrolling other side'); + + if (this.settings.autoupdate) { + var timer = new Mgly.Timer(); + this._calculate_offsets(editor_name1, editor_name2, this.changes); + this.trace('change', 'offsets time', timer.stop()); + this._markup_changes(editor_name1, editor_name2, this.changes); + this.trace('change', 'markup time', timer.stop()); + this._draw_diff(editor_name1, editor_name2, this.changes); + this.trace('change', 'draw time', timer.stop()); + } + this.trace('scroll', 'scrolled'); + } + }, + _changing: function(editor_name1, editor_name2) { + this.trace('change', 'changing-timeout', this.changed_timeout); + var self = this; + if (this.changed_timeout != null) clearTimeout(this.changed_timeout); + this.changed_timeout = setTimeout(function(){ + var timer = new Mgly.Timer(); + self._changed(editor_name1, editor_name2); + self.trace('change', 'total time', timer.stop()); + }, this.settings.change_timeout); + }, + _changed: function(editor_name1, editor_name2) { + this._clear(); + this._diff(editor_name1, editor_name2); + }, + _clear: function() { + var self = this; + for (var name in this.editor) { + if (!this.editor.hasOwnProperty(name)) continue; + var editor = this.editor[name]; + var fns = self.chfns[name]; + // clear editor changes + editor.operation(function() { + var timer = new Mgly.Timer(); + for (var i = 0, l = editor.lineCount(); i < l; ++i) { + editor.removeLineClass(i, 'background'); + } + for (var i = 0; i < fns.length; ++i) { + //var edid = editor.getDoc().id; + var change = fns[i]; + //if (change.doc.id != edid) continue; + if (change.lines.length) { + self.trace('change', 'clear text', change.lines[0].text); + } + change.clear(); + } + editor.clearGutter('merge'); + self.trace('change', 'clear time', timer.stop()); + }); + } + self.chfns[name] = []; + + var ex = this._draw_info(this.id + '-lhs', this.id + '-rhs'); + var ctx_lhs = ex.clhs.get(0).getContext('2d'); + var ctx_rhs = ex.crhs.get(0).getContext('2d'); + var ctx = ex.dcanvas.getContext('2d'); + + ctx_lhs.beginPath(); + ctx_lhs.fillStyle = this.settings.bgcolor; + ctx_lhs.strokeStyle = '#888'; + ctx_lhs.fillRect(0, 0, 6.5, ex.visible_page_height); + ctx_lhs.strokeRect(0, 0, 6.5, ex.visible_page_height); + + ctx_rhs.beginPath(); + ctx_rhs.fillStyle = this.settings.bgcolor; + ctx_rhs.strokeStyle = '#888'; + ctx_rhs.fillRect(0, 0, 6.5, ex.visible_page_height); + ctx_rhs.strokeRect(0, 0, 6.5, ex.visible_page_height); + + ctx.beginPath(); + ctx.fillStyle = '#fff'; + ctx.fillRect(0, 0, this.draw_mid_width, ex.visible_page_height); + }, + _diff: function(editor_name1, editor_name2) { + var lhs = this.editor[editor_name1].getValue(); + var rhs = this.editor[editor_name2].getValue(); + var timer = new Mgly.Timer(); + var d = new Mgly.diff(lhs, rhs, this.settings); + this.trace('change', 'diff time', timer.stop()); + this.changes = Mgly.DiffParser(d.normal_form()); + this.trace('change', 'parse time', timer.stop()); + if (this._current_diff === undefined) { + // go to first difference on start-up + this._current_diff = 0; + this._scroll_to_change(this.changes[0]); + } + this.trace('change', 'scroll_to_change time', timer.stop()); + this._calculate_offsets(editor_name1, editor_name2, this.changes); + this.trace('change', 'offsets time', timer.stop()); + this._markup_changes(editor_name1, editor_name2, this.changes); + this.trace('change', 'markup time', timer.stop()); + this._draw_diff(editor_name1, editor_name2, this.changes); + this.trace('change', 'draw time', timer.stop()); + }, + _parse_diff: function (editor_name1, editor_name2, diff) { + this.trace('diff', 'diff results:\n', diff); + var changes = []; + var change_id = 0; + // parse diff + var diff_lines = diff.split(/\n/); + for (var i = 0; i < diff_lines.length; ++i) { + if (diff_lines[i].length == 0) continue; + var change = {}; + var test = this.change_exp.exec(diff_lines[i]); + if (test == null) continue; + // lines are zero-based + var fr = test[1].split(','); + change['lhs-line-from'] = fr[0] - 1; + if (fr.length == 1) change['lhs-line-to'] = fr[0] - 1; + else change['lhs-line-to'] = fr[1] - 1; + var to = test[3].split(','); + change['rhs-line-from'] = to[0] - 1; + if (to.length == 1) change['rhs-line-to'] = to[0] - 1; + else change['rhs-line-to'] = to[1] - 1; + // TODO: optimize for changes that are adds/removes + if (change['lhs-line-from'] < 0) change['lhs-line-from'] = 0; + if (change['lhs-line-to'] < 0) change['lhs-line-to'] = 0; + if (change['rhs-line-from'] < 0) change['rhs-line-from'] = 0; + if (change['rhs-line-to'] < 0) change['rhs-line-to'] = 0; + change['op'] = test[2]; + changes[change_id++] = change; + this.trace('diff', 'change', change); + } + return changes; + }, + _get_viewport: function(editor_name1, editor_name2) { + var lhsvp = this.editor[editor_name1].getViewport(); + var rhsvp = this.editor[editor_name2].getViewport(); + return {from: Math.min(lhsvp.from, rhsvp.from), to: Math.max(lhsvp.to, rhsvp.to)}; + }, + _is_change_in_view: function(vp, change) { + if (!this.settings.viewport) return true; + if ((change['lhs-line-from'] < vp.from && change['lhs-line-to'] < vp.to) || + (change['lhs-line-from'] > vp.from && change['lhs-line-to'] > vp.to) || + (change['rhs-line-from'] < vp.from && change['rhs-line-to'] < vp.to) || + (change['rhs-line-from'] > vp.from && change['rhs-line-to'] > vp.to)) { + // if the change is outside the viewport, skip + return false; + } + return true; + }, + _set_top_offset: function (editor_name1) { + // save the current scroll position of the editor + var saveY = this.editor[editor_name1].getScrollInfo().top; + // temporarily scroll to top + this.editor[editor_name1].scrollTo(null, 0); + + // this is the distance from the top of the screen to the top of the + // content of the first codemirror editor + var topnode = jQuery('#' + this.id + ' .CodeMirror-measure').first(); + var top_offset = topnode.offset().top - 4; + if(!top_offset) return false; + + // restore editor's scroll position + this.editor[editor_name1].scrollTo(null, saveY); + + this.draw_top_offset = 0.5 - top_offset; + return true; + }, + _calculate_offsets: function (editor_name1, editor_name2, changes) { + if (this.em_height == null) { + if(!this._set_top_offset(editor_name1)) return; //try again + this.em_height = this.editor[editor_name1].defaultTextHeight(); + if (!this.em_height) { + console.warn('Failed to calculate offsets, using 18 by default'); + this.em_height = 18; + } + this.draw_lhs_min = 0.5; + var c = jQuery('#' + editor_name1 + '-' + editor_name2 + '-canvas'); + if (!c.length) { + console.error('failed to find canvas', '#' + editor_name1 + '-' + editor_name2 + '-canvas'); + } + if (!c.width()) { + console.error('canvas width is 0'); + return; + } + this.draw_mid_width = jQuery('#' + editor_name1 + '-' + editor_name2 + '-canvas').width(); + this.draw_rhs_max = this.draw_mid_width - 0.5; //24.5; + this.draw_lhs_width = 5; + this.draw_rhs_width = 5; + this.trace('calc', 'change offsets calculated', {top_offset: this.draw_top_offset, lhs_min: this.draw_lhs_min, rhs_max: this.draw_rhs_max, lhs_width: this.draw_lhs_width, rhs_width: this.draw_rhs_width}); + } + var lhschc = this.editor[editor_name1].charCoords({line: 0}); + var rhschc = this.editor[editor_name2].charCoords({line: 0}); + var vp = this._get_viewport(editor_name1, editor_name2); + + for (var i = 0; i < changes.length; ++i) { + var change = changes[i]; + + if (!this.settings.sidebar && !this._is_change_in_view(vp, change)) { + // if the change is outside the viewport, skip + delete change['lhs-y-start']; + delete change['lhs-y-end']; + delete change['rhs-y-start']; + delete change['rhs-y-end']; + continue; + } + var llf = change['lhs-line-from'] >= 0 ? change['lhs-line-from'] : 0; + var llt = change['lhs-line-to'] >= 0 ? change['lhs-line-to'] : 0; + var rlf = change['rhs-line-from'] >= 0 ? change['rhs-line-from'] : 0; + var rlt = change['rhs-line-to'] >= 0 ? change['rhs-line-to'] : 0; + + var ls, le, rs, re; + if (this.editor[editor_name1].getOption('lineWrapping') || this.editor[editor_name1].getOption('lineWrapping')) { + // If using line-wrapping, we must get the height of the line + var tls = this.editor[editor_name1].cursorCoords({line: llf, ch: 0}, 'page'); + var lhssh = this.editor[editor_name1].getLineHandle(llf); + ls = { top: tls.top, bottom: tls.top + lhssh.height }; + + var tle = this.editor[editor_name1].cursorCoords({line: llt, ch: 0}, 'page'); + var lhseh = this.editor[editor_name1].getLineHandle(llt); + le = { top: tle.top, bottom: tle.top + lhseh.height }; + + var tls = this.editor[editor_name2].cursorCoords({line: rlf, ch: 0}, 'page'); + var rhssh = this.editor[editor_name2].getLineHandle(rlf); + rs = { top: tls.top, bottom: tls.top + rhssh.height }; + + var tle = this.editor[editor_name2].cursorCoords({line: rlt, ch: 0}, 'page'); + var rhseh = this.editor[editor_name2].getLineHandle(rlt); + re = { top: tle.top, bottom: tle.top + rhseh.height }; + } + else { + // If not using line-wrapping, we can calculate the line position + ls = { + top: lhschc.top + llf * this.em_height, + bottom: lhschc.bottom + llf * this.em_height + 2 + }; + le = { + top: lhschc.top + llt * this.em_height, + bottom: lhschc.bottom + llt * this.em_height + 2 + }; + rs = { + top: rhschc.top + rlf * this.em_height, + bottom: rhschc.bottom + rlf * this.em_height + 2 + }; + re = { + top: rhschc.top + rlt * this.em_height, + bottom: rhschc.bottom + rlt * this.em_height + 2 + }; + } + + if (change['op'] == 'a') { + // adds (right), normally start from the end of the lhs, + // except for the case when the start of the rhs is 0 + if (rlf > 0) { + ls.top = ls.bottom; + ls.bottom += this.em_height; + le = ls; + } + } + else if (change['op'] == 'd') { + // deletes (left) normally finish from the end of the rhs, + // except for the case when the start of the lhs is 0 + if (llf > 0) { + rs.top = rs.bottom; + rs.bottom += this.em_height; + re = rs; + } + } + change['lhs-y-start'] = this.draw_top_offset + ls.top; + if (change['op'] == 'c' || change['op'] == 'd') { + change['lhs-y-end'] = this.draw_top_offset + le.bottom; + } + else { + change['lhs-y-end'] = this.draw_top_offset + le.top; + } + change['rhs-y-start'] = this.draw_top_offset + rs.top; + if (change['op'] == 'c' || change['op'] == 'a') { + change['rhs-y-end'] = this.draw_top_offset + re.bottom; + } + else { + change['rhs-y-end'] = this.draw_top_offset + re.top; + } + this.trace('calc', 'change calculated', i, change); + } + return changes; + }, + _markup_changes: function (editor_name1, editor_name2, changes) { + jQuery('.merge-button').remove(); // clear + + var self = this; + var led = this.editor[editor_name1]; + var red = this.editor[editor_name2]; + + var timer = new Mgly.Timer(); + led.operation(function() { + for (var i = 0; i < changes.length; ++i) { + var change = changes[i]; + var llf = change['lhs-line-from'] >= 0 ? change['lhs-line-from'] : 0; + var llt = change['lhs-line-to'] >= 0 ? change['lhs-line-to'] : 0; + var rlf = change['rhs-line-from'] >= 0 ? change['rhs-line-from'] : 0; + var rlt = change['rhs-line-to'] >= 0 ? change['rhs-line-to'] : 0; + + var clazz = ['mergely', 'lhs', change['op'], 'cid-' + i]; + led.addLineClass(llf, 'background', 'start'); + led.addLineClass(llt, 'background', 'end'); + + if (llf == 0 && llt == 0 && rlf == 0) { + led.addLineClass(llf, 'background', clazz.join(' ')); + led.addLineClass(llf, 'background', 'first'); + } + else { + // apply change for each line in-between the changed lines + for (var j = llf; j <= llt; ++j) { + led.addLineClass(j, 'background', clazz.join(' ')); + led.addLineClass(j, 'background', clazz.join(' ')); + } + } + + if (!red.getOption('readOnly')) { + // add widgets to lhs, if rhs is not read only + var rhs_button = self.merge_rhs_button.clone(); + if (rhs_button.button) { + //jquery-ui support + rhs_button.button({icons: {primary: 'ui-icon-triangle-1-e'}, text: false}); + } + rhs_button.addClass('merge-button'); + rhs_button.attr('id', 'merge-rhs-' + i); + led.setGutterMarker(llf, 'merge', rhs_button.get(0)); + } + } + }); + + var vp = this._get_viewport(editor_name1, editor_name2); + + this.trace('change', 'markup lhs-editor time', timer.stop()); + red.operation(function() { + for (var i = 0; i < changes.length; ++i) { + var change = changes[i]; + var llf = change['lhs-line-from'] >= 0 ? change['lhs-line-from'] : 0; + var llt = change['lhs-line-to'] >= 0 ? change['lhs-line-to'] : 0; + var rlf = change['rhs-line-from'] >= 0 ? change['rhs-line-from'] : 0; + var rlt = change['rhs-line-to'] >= 0 ? change['rhs-line-to'] : 0; + + if (!self._is_change_in_view(vp, change)) { + // if the change is outside the viewport, skip + continue; + } + + var clazz = ['mergely', 'rhs', change['op'], 'cid-' + i]; + red.addLineClass(rlf, 'background', 'start'); + red.addLineClass(rlt, 'background', 'end'); + + if (rlf == 0 && rlt == 0 && llf == 0) { + red.addLineClass(rlf, 'background', clazz.join(' ')); + red.addLineClass(rlf, 'background', 'first'); + } + else { + // apply change for each line in-between the changed lines + for (var j = rlf; j <= rlt; ++j) { + red.addLineClass(j, 'background', clazz.join(' ')); + red.addLineClass(j, 'background', clazz.join(' ')); + } + } + + if (!led.getOption('readOnly')) { + // add widgets to rhs, if lhs is not read only + var lhs_button = self.merge_lhs_button.clone(); + if (lhs_button.button) { + //jquery-ui support + lhs_button.button({icons: {primary: 'ui-icon-triangle-1-w'}, text: false}); + } + lhs_button.addClass('merge-button'); + lhs_button.attr('id', 'merge-lhs-' + i); + red.setGutterMarker(rlf, 'merge', lhs_button.get(0)); + } + } + }); + this.trace('change', 'markup rhs-editor time', timer.stop()); + + // mark text deleted, LCS changes + var marktext = []; + for (var i = 0; this.settings.lcs && i < changes.length; ++i) { + var change = changes[i]; + var llf = change['lhs-line-from'] >= 0 ? change['lhs-line-from'] : 0; + var llt = change['lhs-line-to'] >= 0 ? change['lhs-line-to'] : 0; + var rlf = change['rhs-line-from'] >= 0 ? change['rhs-line-from'] : 0; + var rlt = change['rhs-line-to'] >= 0 ? change['rhs-line-to'] : 0; + + if (!this._is_change_in_view(vp, change)) { + // if the change is outside the viewport, skip + continue; + } + if (change['op'] == 'd') { + // apply delete to cross-out (left-hand side only) + var from = llf; + var to = llt; + var to_ln = led.lineInfo(to); + if (to_ln) { + marktext.push([led, {line:from, ch:0}, {line:to, ch:to_ln.text.length}, {className: 'mergely ch d lhs'}]); + } + } + else if (change['op'] == 'c') { + // apply LCS changes to each line + for (var j = llf, k = rlf, p = 0; + ((j >= 0) && (j <= llt)) || ((k >= 0) && (k <= rlt)); + ++j, ++k) { + if (k + p > rlt) { + // lhs continues past rhs, mark lhs as deleted + var lhs_line = led.getLine( j ); + marktext.push([led, {line:j, ch:0}, {line:j, ch:lhs_line.length}, {className: 'mergely ch d lhs'}]); + continue; + } + if (j + p > llt) { + // rhs continues past lhs, mark rhs as added + var rhs_line = red.getLine( k ); + marktext.push([red, {line:k, ch:0}, {line:k, ch:rhs_line.length}, {className: 'mergely ch a rhs'}]); + continue; + } + var lhs_line = led.getLine( j ); + var rhs_line = red.getLine( k ); + var lhs_start = { line: -1, ch: -1 }; + var lhs_stop = { line: -1, ch: -1 }; + var rhs_start = { line: -1, ch: -1 }; + var rhs_stop = { line: -1, ch: -1 }; + + var lcs = new Mgly.LCS(lhs_line, rhs_line); + lcs.diff( + function (from, to) {//added + marktext.push([red, {line:k, ch:from}, {line:k, ch:to}, {className: 'mergely ch a rhs'}]); + }, + removed = function (from, to) {//removed + marktext.push([led, {line:j, ch:from}, {line:j, ch:to}, {className: 'mergely ch d lhs'}]); + } + ); + } + } + } + this.trace('change', 'LCS marktext time', timer.stop()); + + // mark changes outside closure + led.operation(function() { + // apply lhs markup + for (var i = 0; i < marktext.length; ++i) { + var m = marktext[i]; + if (m[0].doc.id != led.getDoc().id) continue; + self.chfns[self.id + '-lhs'].push(m[0].markText(m[1], m[2], m[3])); + } + }); + red.operation(function() { + // apply lhs markup + for (var i = 0; i < marktext.length; ++i) { + var m = marktext[i]; + if (m[0].doc.id != red.getDoc().id) continue; + self.chfns[self.id + '-rhs'].push(m[0].markText(m[1], m[2], m[3])); + } + }); + this.trace('change', 'LCS markup time', timer.stop()); + + // merge buttons + var ed = {lhs:led, rhs:red}; + jQuery('.merge-button').on('click', function(ev){ + // side of mouseenter + var side = 'rhs'; + var oside = 'lhs'; + var parent = jQuery(this).parents('#' + self.id + '-editor-lhs'); + if (parent.length) { + side = 'lhs'; + oside = 'rhs'; + } + var pos = ed[side].coordsChar({left:ev.pageX, top:ev.pageY}); + + // get the change id + var cid = null; + var info = ed[side].lineInfo(pos.line); + jQuery.each(info.bgClass.split(' '), function(i, clazz) { + if (clazz.indexOf('cid-') == 0) { + cid = parseInt(clazz.split('-')[1], 10); + return false; + } + }); + var change = self.changes[cid]; + self._merge_change(change, side, oside); + return false; + }); + this.trace('change', 'markup buttons time', timer.stop()); + }, + _merge_change : function(change, side, oside) { + if (!change) return; + var led = this.editor[this.id+'-lhs']; + var red = this.editor[this.id+'-rhs']; + var ed = {lhs:led, rhs:red}; + + + var text = ed[side].getRange( + CodeMirror.Pos(change[side + '-line-from'], 0), + CodeMirror.Pos(change[side + '-line-to'] + 1, 0)); + + if (change['op'] == 'c') { + ed[oside].replaceRange(text, + CodeMirror.Pos(change[oside + '-line-from'], 0), + CodeMirror.Pos(change[oside + '-line-to'] + 1, 0)); + } + else if (side == 'rhs') { + if (change['op'] == 'a') { + ed[oside].replaceRange(text, + CodeMirror.Pos(change[oside + '-line-from'] + 1, 0), + CodeMirror.Pos(change[oside + '-line-to'] + 1, 0)); + } + else {// 'd' + var from = parseInt(change[oside + '-line-from']); + var to = parseInt(change[oside + '-line-to']); + for (var i = to; i >= from; --i) { + ed[oside].removeLine(i); + } + } + } + else if (side == 'lhs') { + if (change['op'] == 'a') { + var from = parseInt(change[oside + '-line-from']); + var to = parseInt(change[oside + '-line-to']); + for (var i = to; i >= from; --i) { + ed[oside].removeLine(i); + } + } + else {// 'd' + ed[oside].replaceRange( text, + CodeMirror.Pos(change[oside + '-line-from'] + 1, 0)); + } + } + //reset + ed['lhs'].setValue(ed['lhs'].getValue()); + ed['rhs'].setValue(ed['rhs'].getValue()); + + this._scroll_to_change(change) + }, + _draw_info: function(editor_name1, editor_name2) { + var visible_page_height = jQuery(this.editor[editor_name1].getScrollerElement()).height(); + var gutter_height = jQuery(this.editor[editor_name1].getScrollerElement()).children(':first-child').height(); + var dcanvas = document.getElementById(editor_name1 + '-' + editor_name2 + '-canvas'); + if (dcanvas == undefined) throw 'Failed to find: ' + editor_name1 + '-' + editor_name2 + '-canvas'; + var clhs = jQuery('#' + this.id + '-lhs-margin'); + var crhs = jQuery('#' + this.id + '-rhs-margin'); + return { + visible_page_height: visible_page_height, + gutter_height: gutter_height, + visible_page_ratio: (visible_page_height / gutter_height), + margin_ratio: (visible_page_height / gutter_height), + lhs_scroller: jQuery(this.editor[editor_name1].getScrollerElement()), + rhs_scroller: jQuery(this.editor[editor_name2].getScrollerElement()), + lhs_lines: this.editor[editor_name1].lineCount(), + rhs_lines: this.editor[editor_name2].lineCount(), + dcanvas: dcanvas, + clhs: clhs, + crhs: crhs, + lhs_xyoffset: jQuery(clhs).offset(), + rhs_xyoffset: jQuery(crhs).offset() + }; + }, + _draw_diff: function(editor_name1, editor_name2, changes) { + var ex = this._draw_info(editor_name1, editor_name2); + var mcanvas_lhs = ex.clhs.get(0); + var mcanvas_rhs = ex.crhs.get(0); + var ctx = ex.dcanvas.getContext('2d'); + var ctx_lhs = mcanvas_lhs.getContext('2d'); + var ctx_rhs = mcanvas_rhs.getContext('2d'); + + this.trace('draw', 'visible_page_height', ex.visible_page_height); + this.trace('draw', 'gutter_height', ex.gutter_height); + this.trace('draw', 'visible_page_ratio', ex.visible_page_ratio); + this.trace('draw', 'lhs-scroller-top', ex.lhs_scroller.scrollTop()); + this.trace('draw', 'rhs-scroller-top', ex.rhs_scroller.scrollTop()); + + jQuery.each(jQuery.find('#' + this.id + ' canvas'), function () { + jQuery(this).get(0).height = ex.visible_page_height; + }); + + ex.clhs.unbind('click'); + ex.crhs.unbind('click'); + + ctx_lhs.beginPath(); + ctx_lhs.fillStyle = this.settings.bgcolor; + ctx_lhs.strokeStyle = '#888'; + ctx_lhs.fillRect(0, 0, 6.5, ex.visible_page_height); + ctx_lhs.strokeRect(0, 0, 6.5, ex.visible_page_height); + + ctx_rhs.beginPath(); + ctx_rhs.fillStyle = this.settings.bgcolor; + ctx_rhs.strokeStyle = '#888'; + ctx_rhs.fillRect(0, 0, 6.5, ex.visible_page_height); + ctx_rhs.strokeRect(0, 0, 6.5, ex.visible_page_height); + + var vp = this._get_viewport(editor_name1, editor_name2); + for (var i = 0; i < changes.length; ++i) { + var change = changes[i]; + + this.trace('draw', change); + // margin indicators + var lhs_y_start = ((change['lhs-y-start'] + ex.lhs_scroller.scrollTop()) * ex.visible_page_ratio); + var lhs_y_end = ((change['lhs-y-end'] + ex.lhs_scroller.scrollTop()) * ex.visible_page_ratio) + 1; + var rhs_y_start = ((change['rhs-y-start'] + ex.rhs_scroller.scrollTop()) * ex.visible_page_ratio); + var rhs_y_end = ((change['rhs-y-end'] + ex.rhs_scroller.scrollTop()) * ex.visible_page_ratio) + 1; + this.trace('draw', 'marker calculated', lhs_y_start, lhs_y_end, rhs_y_start, rhs_y_end); + + ctx_lhs.beginPath(); + ctx_lhs.fillStyle = this.settings.fgcolor[(this._current_diff==i?'c':'')+change['op']]; + ctx_lhs.strokeStyle = '#000'; + ctx_lhs.lineWidth = 0.5; + ctx_lhs.fillRect(1.5, lhs_y_start, 4.5, Math.max(lhs_y_end - lhs_y_start, 5)); + ctx_lhs.strokeRect(1.5, lhs_y_start, 4.5, Math.max(lhs_y_end - lhs_y_start, 5)); + + ctx_rhs.beginPath(); + ctx_rhs.fillStyle = this.settings.fgcolor[(this._current_diff==i?'c':'')+change['op']]; + ctx_rhs.strokeStyle = '#000'; + ctx_rhs.lineWidth = 0.5; + ctx_rhs.fillRect(1.5, rhs_y_start, 4.5, Math.max(rhs_y_end - rhs_y_start, 5)); + ctx_rhs.strokeRect(1.5, rhs_y_start, 4.5, Math.max(rhs_y_end - rhs_y_start, 5)); + + if (!this._is_change_in_view(vp, change)) { + continue; + } + + lhs_y_start = change['lhs-y-start']; + lhs_y_end = change['lhs-y-end']; + rhs_y_start = change['rhs-y-start']; + rhs_y_end = change['rhs-y-end']; + + var radius = 3; + + // draw left box + ctx.beginPath(); + ctx.strokeStyle = this.settings.fgcolor[(this._current_diff==i?'c':'')+change['op']]; + ctx.lineWidth = (this._current_diff==i) ? 1.5 : 1; + + var rectWidth = this.draw_lhs_width; + var rectHeight = lhs_y_end - lhs_y_start - 1; + var rectX = this.draw_lhs_min; + var rectY = lhs_y_start; + // top and top top-right corner + + // draw left box + ctx.moveTo(rectX, rectY); + if (navigator.appName == 'Microsoft Internet Explorer') { + // IE arcs look awful + ctx.lineTo(this.draw_lhs_min + this.draw_lhs_width, lhs_y_start); + ctx.lineTo(this.draw_lhs_min + this.draw_lhs_width, lhs_y_end + 1); + ctx.lineTo(this.draw_lhs_min, lhs_y_end + 1); + } + else { + if (rectHeight <= 0) { + ctx.lineTo(rectX + rectWidth, rectY); + } + else { + ctx.arcTo(rectX + rectWidth, rectY, rectX + rectWidth, rectY + radius, radius); + ctx.arcTo(rectX + rectWidth, rectY + rectHeight, rectX + rectWidth - radius, rectY + rectHeight, radius); + } + // bottom line + ctx.lineTo(rectX, rectY + rectHeight); + } + ctx.stroke(); + + rectWidth = this.draw_rhs_width; + rectHeight = rhs_y_end - rhs_y_start - 1; + rectX = this.draw_rhs_max; + rectY = rhs_y_start; + + // draw right box + ctx.moveTo(rectX, rectY); + if (navigator.appName == 'Microsoft Internet Explorer') { + ctx.lineTo(this.draw_rhs_max - this.draw_rhs_width, rhs_y_start); + ctx.lineTo(this.draw_rhs_max - this.draw_rhs_width, rhs_y_end + 1); + ctx.lineTo(this.draw_rhs_max, rhs_y_end + 1); + } + else { + if (rectHeight <= 0) { + ctx.lineTo(rectX - rectWidth, rectY); + } + else { + ctx.arcTo(rectX - rectWidth, rectY, rectX - rectWidth, rectY + radius, radius); + ctx.arcTo(rectX - rectWidth, rectY + rectHeight, rectX - radius, rectY + rectHeight, radius); + } + ctx.lineTo(rectX, rectY + rectHeight); + } + ctx.stroke(); + + // connect boxes + var cx = this.draw_lhs_min + this.draw_lhs_width; + var cy = lhs_y_start + (lhs_y_end + 1 - lhs_y_start) / 2.0; + var dx = this.draw_rhs_max - this.draw_rhs_width; + var dy = rhs_y_start + (rhs_y_end + 1 - rhs_y_start) / 2.0; + ctx.moveTo(cx, cy); + if (cy == dy) { + ctx.lineTo(dx, dy); + } + else { + // fancy! + ctx.bezierCurveTo( + cx + 12, cy - 3, // control-1 X,Y + dx - 12, dy - 3, // control-2 X,Y + dx, dy); + } + ctx.stroke(); + } + + // visible window feedback + ctx_lhs.fillStyle = this.settings.vpcolor; + ctx_rhs.fillStyle = this.settings.vpcolor; + + var lto = ex.clhs.height() * ex.visible_page_ratio; + var lfrom = (ex.lhs_scroller.scrollTop() / ex.gutter_height) * ex.clhs.height(); + var rto = ex.crhs.height() * ex.visible_page_ratio; + var rfrom = (ex.rhs_scroller.scrollTop() / ex.gutter_height) * ex.crhs.height(); + this.trace('draw', 'cls.height', ex.clhs.height()); + this.trace('draw', 'lhs_scroller.scrollTop()', ex.lhs_scroller.scrollTop()); + this.trace('draw', 'gutter_height', ex.gutter_height); + this.trace('draw', 'visible_page_ratio', ex.visible_page_ratio); + this.trace('draw', 'lhs from', lfrom, 'lhs to', lto); + this.trace('draw', 'rhs from', rfrom, 'rhs to', rto); + + ctx_lhs.fillRect(1.5, lfrom, 4.5, lto); + ctx_rhs.fillRect(1.5, rfrom, 4.5, rto); + + ex.clhs.click(function (ev) { + var y = ev.pageY - ex.lhs_xyoffset.top - (lto / 2); + var sto = Math.max(0, (y / mcanvas_lhs.height) * ex.lhs_scroller.get(0).scrollHeight); + ex.lhs_scroller.scrollTop(sto); + }); + ex.crhs.click(function (ev) { + var y = ev.pageY - ex.rhs_xyoffset.top - (rto / 2); + var sto = Math.max(0, (y / mcanvas_rhs.height) * ex.rhs_scroller.get(0).scrollHeight); + ex.rhs_scroller.scrollTop(sto); + }); + }, + trace: function(name) { + if(this.settings._debug.indexOf(name) >= 0) { + arguments[0] = name+':'; + console.log([].slice.apply(arguments)); + } + } +}); + +jQuery.pluginMaker = function(plugin) { + // add the plugin function as a jQuery plugin + jQuery.fn[plugin.prototype.name] = function(options) { + // get the arguments + var args = jQuery.makeArray(arguments), + after = args.slice(1); + var rc = undefined; + this.each(function() { + // see if we have an instance + var instance = jQuery.data(this, plugin.prototype.name); + if (instance) { + // call a method on the instance + if (typeof options == "string") { + rc = instance[options].apply(instance, after); + } else if (instance.update) { + // call update on the instance + return instance.update.apply(instance, args); + } + } else { + // create the plugin + new plugin(this, options); + } + }); + if (rc != undefined) return rc; + }; +}; + +// make the mergely widget +jQuery.pluginMaker(Mgly.mergely); diff --git a/lib/mergely.min.js b/lib/mergely.min.js new file mode 100644 index 0000000..fcfe5f9 --- /dev/null +++ b/lib/mergely.min.js @@ -0,0 +1,6 @@ +/** + * Copyright (c) 2014 by Jamie Peabody, http://www.mergely.com + * All rights reserved. + * Version: 3.3.7 2014-08-17 + */ +Mgly={},Mgly.Timer=function(){var a=this;a.start=function(){a.t0=(new Date).getTime()},a.stop=function(){var b=(new Date).getTime(),c=b-a.t0;return a.t0=b,c},a.start()},Mgly.ChangeExpression=new RegExp(/(^(?![><-])*\d+(?:,\d+)?)([acd])(\d+(?:,\d+)?)/),Mgly.DiffParser=function(a){for(var b=[],c=0,d=a.split(/\n/),e=0;e0&&"c"==h.op&&(e+=1),b(e,e+i.length)}if("d"!=h.op){e=c.getLines("rhs").slice(0,h["rhs-line-from"]).join(" ").length,f=h["rhs-line-to"]+1;var j=c.getLines("rhs").slice(h["rhs-line-from"],f).join(" ");"a"==h.op?j+=" ":e>0&&"c"==h.op&&(e+=1),a(e,e+j.length)}}}}),Mgly.CodeifyText=function(a){this._max_code=0,this._diff_codes={},this.ctxs={},this.options={ignorews:!1},jQuery.extend(this,a),this.lhs=a.lhs.split("\n"),this.rhs=a.rhs.split("\n")},jQuery.extend(Mgly.CodeifyText.prototype,{getCodes:function(a){if(!this.ctxs.hasOwnProperty(a)){var b=this._diff_ctx(this[a]);this.ctxs[a]=b,b.codes.length=Object.keys(b.codes).length}return this.ctxs[a].codes},getLines:function(a){return this.ctxs[a].lines},_diff_ctx:function(a){var b={i:0,codes:{},lines:a};return this._codeify(a,b),b},_codeify:function(a,b){this._max_code;for(var d=0;d0?f="a":c.lhs_deleted_count>0&&0==c.rhs_inserted_count&&(f="d"),d=1==c.lhs_deleted_count?c.lhs_start+1:0==c.lhs_deleted_count?c.lhs_start:c.lhs_start+1+","+(c.lhs_start+c.lhs_deleted_count),e=1==c.rhs_inserted_count?c.rhs_start+1:0==c.rhs_inserted_count?c.rhs_start:c.rhs_start+1+","+(c.rhs_start+c.rhs_inserted_count),a+=d+f+e+"\n";var g=this.getLines("lhs"),h=this.getLines("rhs");if(h&&g){for(var i=c.lhs_start;i "+h[i]+"\n"}}return a},_lcs:function(a,b,c,d,e,f,g,h){for(;c>b&&f>e&&a.codes[b]==d.codes[e];)++b,++e;for(;c>b&&f>e&&a.codes[c-1]==d.codes[f-1];)--c,--f;if(b==c)for(;f>e;)d.modified[e++]=!0;else if(e==f)for(;c>b;)a.modified[b++]=!0;else{var i=this._sms(a,b,c,d,e,f,g,h);this._lcs(a,b,i.x,d,e,i.y,g,h),this._lcs(a,i.x,c,d,i.y,f,g,h)}},_sms:function(a,b,c,d,e,f,g,h){var i=a.codes.length+d.codes.length+1,j=b-e,k=c-f,l=c-b-(f-e),m=0!=(1&l),n=i-j,o=i-k,p=(c-b+f-e)/2+1;h[n+j+1]=b,g[o+k-1]=c;for(var q={x:0,y:0},r=0;p>=r;++r){for(var s=j-r;j+r>=s;s+=2){var t,u;for(s==j-r?t=h[n+s+1]:(t=h[n+s-1]+1,j+r>s&&h[n+s+1]>=t&&(t=h[n+s+1])),u=t-s;c>t&&f>u&&a.codes[t]==d.codes[u];)t++,u++;if(h[n+s]=t,m&&s>k-r&&k+r>s&&g[o+s]<=h[n+s])return q.x=h[n+s],q.y=h[n+s]-s,q}for(var s=k-r;k+r>=s;s+=2){var t,u;for(s==k+r?t=g[o+s-1]:(t=g[o+s+1]-1,s>k-r&&g[o+s-1]b&&u>e&&a.codes[t-1]==d.codes[u-1];)t--,u--;if(g[o+s]=t,!m&&s>=j-r&&j+r>=s&&g[o+s]<=h[n+s])return q.x=h[n+s],q.y=h[n+s]-s,q}}throw"the algorithm should never come here."},_optimize:function(a){for(var b=0,c=0;b=b.codes.length||a.modified[f]);)f++;for(;g=a.codes.length||b.modified[g]);)g++;(f>d||g>e)&&c.push({lhs_start:d,rhs_start:e,lhs_deleted_count:f-d,rhs_inserted_count:g-e})}return c}}),Mgly.mergely=function(a,b){a&&this.init(a,b)},jQuery.extend(Mgly.mergely.prototype,{name:"mergely",init:function(a,b){this.diffView=new Mgly.CodeMirrorDiffView(a,b),this.bind(a)},bind:function(a){this.diffView.bind(a)}}),Mgly.CodeMirrorDiffView=function(a,b){CodeMirror.defineExtension("centerOnCursor",function(){var a=this.cursorCoords(null,"local");this.scrollTo(null,(a.y+a.yBot)/2-this.getScrollerElement().clientHeight/2)}),this.init(a,b)},jQuery.extend(Mgly.CodeMirrorDiffView.prototype,{init:function(a,b){this.settings={autoupdate:!0,autoresize:!0,rhs_margin:"right",lcs:!0,sidebar:!0,viewport:!1,ignorews:!1,fadein:"fast",editor_width:"650px",editor_height:"400px",resize_timeout:500,change_timeout:150,fgcolor:{a:"#4ba3fa",c:"#a3a3a3",d:"#ff7f7f",ca:"#4b73ff",cc:"#434343",cd:"#ff4f4f"},bgcolor:"#eee",vpcolor:"rgba(0, 0, 200, 0.5)",lhs:function(){},rhs:function(){},loaded:function(){},_auto_width:function(a){return a},resize:function(b){var c=b?16:0,d=jQuery(a).parent().width()+c;"auto"==this.width?d=this._auto_width(d):(d=this.width,this.editor_width=d),"auto"==this.height?h=jQuery(a).parent().height():(h=this.height,this.editor_height=h);var e=d/2-16-8,f=h,g=jQuery(a);g.find(".mergely-column").css({width:e+"px"}),g.find(".mergely-column, .mergely-canvas, .mergely-margin, .mergely-column textarea, .CodeMirror-scroll, .cm-s-default").css({height:f+"px"}),g.find(".mergely-canvas").css({height:f+"px"}),g.find(".mergely-column textarea").css({width:e+"px"}),g.css({width:d,height:h,clear:"both"}),"none"==g.css("display")&&(0!=this.fadein?g.fadeIn(this.fadein):g.show(),this.loaded&&this.loaded()),this.resized&&this.resized()},_debug:"",resized:function(){}};var c={mode:"text/plain",readOnly:!1,lineWrapping:!1,lineNumbers:!0,gutters:["merge","CodeMirror-linenumbers"]};this.lhs_cmsettings={},this.rhs_cmsettings={},this.element=jQuery(a),b&&b.cmsettings&&jQuery.extend(this.lhs_cmsettings,c,b.cmsettings,b.lhs_cmsettings),b&&b.cmsettings&&jQuery.extend(this.rhs_cmsettings,c,b.cmsettings,b.rhs_cmsettings),b&&jQuery.extend(this.settings,b),this.element.bind("destroyed",jQuery.proxy(this.teardown,this)),jQuery.data(a,"mergely",this)},unbind:function(){null!=this.changed_timeout&&clearTimeout(this.changed_timeout),this.editor[this.id+"-lhs"].toTextArea(),this.editor[this.id+"-rhs"].toTextArea()},destroy:function(){this.element.unbind("destroyed",this.teardown),this.teardown()},teardown:function(){this.unbind()},lhs:function(a){this.editor[this.id+"-lhs"].setValue(a)},rhs:function(a){this.editor[this.id+"-rhs"].setValue(a)},update:function(){this._changing(this.id+"-lhs",this.id+"-rhs")},unmarkup:function(){this._clear()},scrollToDiff:function(a){this.changes.length&&(this._current_diff="next"==a?Math.min(++this._current_diff,this.changes.length-1):Math.max(--this._current_diff,0),this._scroll_to_change(this.changes[this._current_diff]),this._changed(this.id+"-lhs",this.id+"-rhs"))},mergeCurrentChange:function(a){this.changes.length&&("lhs"!=a||this.lhs_cmsettings.readOnly?"rhs"!=a||this.rhs_cmsettings.readOnly||this._merge_change(this.changes[this._current_diff],"lhs","rhs"):this._merge_change(this.changes[this._current_diff],"rhs","lhs"))},scrollTo:function(a,b){var c=this.editor[this.id+"-lhs"],d=this.editor[this.id+"-rhs"];"lhs"==a?(c.setCursor(b),c.centerOnCursor()):(d.setCursor(b),d.centerOnCursor())},options:function(a){if(!a)return this.settings;if(jQuery.extend(this.settings,a),this.settings.autoresize&&this.resize(),this.settings.autoupdate&&this.update(),this.settings.hasOwnProperty("rhs_margin"))if("left"==this.settings.rhs_margin)this.element.find(".mergely-margin:last-child").insertAfter(this.element.find(".mergely-canvas"));else{var b=this.element.find(".mergely-margin").last();b.appendTo(b.parent())}this.settings.hasOwnProperty("sidebar")&&(this.settings.sidebar?jQuery(this.element).find(".mergely-margin").css({display:"block"}):jQuery(this.element).find(".mergely-margin").css({display:"none"}))},swap:function(){if(!this.lhs_cmsettings.readOnly&&!this.rhs_cmsettings.readOnly){var a=this.editor[this.id+"-lhs"],b=this.editor[this.id+"-rhs"],c=b.getValue();b.setValue(a.getValue()),a.setValue(c)}},merge:function(a){var b=this.editor[this.id+"-lhs"],c=this.editor[this.id+"-rhs"];"lhs"!=a||this.lhs_cmsettings.readOnly?this.rhs_cmsettings.readOnly||c.setValue(b.getValue()):b.setValue(c.getValue())},get:function(a){var b=this.editor[this.id+"-"+a],c=b.getValue();return void 0==c?"":c},clear:function(a){if(!("lhs"==a&&this.lhs_cmsettings.readOnly||"rhs"==a&&this.rhs_cmsettings.readOnly)){var b=this.editor[this.id+"-"+a];b.setValue("")}},cm:function(a){return this.editor[this.id+"-"+a]},search:function(a,b,c){var f,d=this.editor[this.id+"-lhs"],e=this.editor[this.id+"-rhs"];f="lhs"==a?d:e,c="prev"==c?"findPrevious":"findNext",(0==f.getSelection().length||this.prev_query[a]!=b)&&(this.cursor[this.id]=f.getSearchCursor(b,{line:0,ch:0},!1),this.prev_query[a]=b);var g=this.cursor[this.id];g[c]()?f.setSelection(g.from(),g.to()):g=f.getSearchCursor(b,{line:0,ch:0},!1)},resize:function(){this.settings.resize(),this._changing(this.id+"-lhs",this.id+"-rhs"),this._set_top_offset(this.id+"-lhs")},diff:function(){var a=this.editor[this.id+"-lhs"].getValue(),b=this.editor[this.id+"-rhs"].getValue(),c=new Mgly.diff(a,b,this.settings);return c.normal_form()},bind:function(a){jQuery(this.element).hide(),this.id=jQuery(a).attr("id");var b=this.settings.editor_height,c=this.settings.editor_width;this.changed_timeout=null,this.chfns={},this.chfns[this.id+"-lhs"]=[],this.chfns[this.id+"-rhs"]=[],this.prev_query=[],this.cursor=[],this._skipscroll={},this.change_exp=new RegExp(/(\d+(?:,\d+)?)([acd])(\d+(?:,\d+)?)/);var d,e;if(void 0!=jQuery.button)d='',e='';else{var f="opacity:0.4;width:10px;height:15px;background-color:#888;cursor:pointer;text-align:center;color:#eee;border:1px solid: #222;margin-right:5px;margin-top: -2px;";d='
<
',e='
>
'}this.merge_rhs_button=jQuery(e),this.merge_lhs_button=jQuery(d),jQuery(this.element).append(jQuery('
')),jQuery(this.element).append(jQuery('
')),jQuery(this.element).append(jQuery('
'));var g=jQuery('
');this.settings.sidebar||jQuery(this.element).find(".mergely-margin").css({display:"none"}),"left"==this.settings.rhs_margin&&jQuery(this.element).append(g),jQuery(this.element).append(jQuery('
')),"left"!=this.settings.rhs_margin&&jQuery(this.element).append(g);var h="#"+this.id+" .CodeMirror-gutter-text { padding: 5px 0 0 0; }"+"#"+this.id+" .CodeMirror-lines pre, "+"#"+this.id+" .CodeMirror-gutter-text pre { line-height: 18px; }"+".CodeMirror-linewidget { overflow: hidden; };";this.settings.autoresize&&(h+=this.id+" .CodeMirror-scroll { height: 100%; overflow: auto; }"),h+="\n.CodeMirror { line-height: 18px; }",jQuery('").appendTo("head");var i=jQuery("#"+this.id+"-rhs").get(0);if(!i)return console.error("rhs textarea not defined - Mergely not initialized properly"),void 0;var j=jQuery("#"+this.id+"-lhs").get(0);if(!i)return console.error("lhs textarea not defined - Mergely not initialized properly"),void 0;var k=this;if(this.editor=[],this.editor[this.id+"-lhs"]=CodeMirror.fromTextArea(j,this.lhs_cmsettings),this.editor[this.id+"-rhs"]=CodeMirror.fromTextArea(i,this.rhs_cmsettings),this.editor[this.id+"-lhs"].on("change",function(){k.settings.autoupdate&&k._changing(k.id+"-lhs",k.id+"-rhs")}),this.editor[this.id+"-lhs"].on("scroll",function(){k._scrolling(k.id+"-lhs")}),this.editor[this.id+"-rhs"].on("change",function(){k.settings.autoupdate&&k._changing(k.id+"-lhs",k.id+"-rhs")}),this.editor[this.id+"-rhs"].on("scroll",function(){k._scrolling(k.id+"-rhs")}),this.settings.autoresize){var l=null,m=function(a){k.settings.resize&&k.settings.resize(a),k.editor[k.id+"-lhs"].refresh(),k.editor[k.id+"-rhs"].refresh(),k.settings.autoupdate&&k._changing(k.id+"-lhs",k.id+"-rhs")};jQuery(window).resize(function(){l&&clearTimeout(l),l=setTimeout(m,k.settings.resize_timeout)}),m(!0)}if(this.settings.lhs){var n=this.editor[this.id+"-lhs"].getDoc().setValue;this.settings.lhs(n.bind(this.editor[this.id+"-lhs"].getDoc()))}if(this.settings.rhs){var n=this.editor[this.id+"-rhs"].getDoc().setValue;this.settings.rhs(n.bind(this.editor[this.id+"-rhs"].getDoc()))}},_scroll_to_change:function(a){if(a){var b=this,c=b.editor[b.id+"-lhs"],d=b.editor[b.id+"-rhs"],e=1*c.getScrollerElement().offsetHeight/2;c.setCursor(Math.max(a["lhs-line-from"],0),0),d.setCursor(Math.max(a["rhs-line-from"],0),0),c.scrollTo(null,0),d.scrollTo(null,0),b._calculate_offsets(b.id+"-lhs",b.id+"-rhs",[a]),c.scrollTo(null,Math.max(a["lhs-y-start"]-e,0)),d.scrollTo(null,Math.max(a["rhs-y-start"]-e,0))}},_scrolling:function(a){if(this._skipscroll[a]===!0)return this._skipscroll[a]=!1,void 0;var b=jQuery(this.editor[a].getScrollerElement());void 0==this.midway&&(this.midway=(b.height()/2+b.offset().top).toFixed(2));var c=this.editor[a].coordsChar({left:0,top:this.midway}),d=b.scrollTop(),e=b.scrollLeft();this.trace("scroll","side",a),this.trace("scroll","midway",this.midway),this.trace("scroll","midline",c),this.trace("scroll","top_to",d),this.trace("scroll","left_to",e);var f=this.id+"-lhs",g=this.id+"-rhs";for(var h in this.editor)if(this.editor.hasOwnProperty(h)&&a!=h){for(var i=a.replace(this.id+"-",""),j=h.replace(this.id+"-",""),k=0,l=null,m=!1,n=0;n=o[i+"-line-from"]&&(l=o,c.line>=l[i+"-line-to"]&&(o.hasOwnProperty(i+"-y-start")&&o.hasOwnProperty(i+"-y-end")&&o.hasOwnProperty(j+"-y-start")&&o.hasOwnProperty(j+"-y-end")?k+=o[i+"-y-end"]-o[i+"-y-start"]-(o[j+"-y-end"]-o[j+"-y-start"]):m=!0))}var p=this.editor[h].getViewport(),q=!0;if(l&&(this.trace("scroll","last change before midline",l),c.line>=p.from&&c<=p.to&&(q=!1)),this.trace("scroll","scroll",q),q||m){this.trace("scroll","scrolling other side",d-k);var b=jQuery(this.editor[h].getScrollerElement());this._skipscroll[h]=!0,b.scrollTop(d-k).scrollLeft(e)}else this.trace("scroll","not scrolling other side");if(this.settings.autoupdate){var r=new Mgly.Timer;this._calculate_offsets(f,g,this.changes),this.trace("change","offsets time",r.stop()),this._markup_changes(f,g,this.changes),this.trace("change","markup time",r.stop()),this._draw_diff(f,g,this.changes),this.trace("change","draw time",r.stop())}this.trace("scroll","scrolled")}},_changing:function(a,b){this.trace("change","changing-timeout",this.changed_timeout);var c=this;null!=this.changed_timeout&&clearTimeout(this.changed_timeout),this.changed_timeout=setTimeout(function(){var d=new Mgly.Timer;c._changed(a,b),c.trace("change","total time",d.stop())},this.settings.change_timeout)},_changed:function(a,b){this._clear(),this._diff(a,b)},_clear:function(){var a=this;for(var b in this.editor)if(this.editor.hasOwnProperty(b)){var c=this.editor[b],d=a.chfns[b];c.operation(function(){for(var b=new Mgly.Timer,e=0,f=c.lineCount();f>e;++e)c.removeLineClass(e,"background");for(var e=0;ea.from&&b["lhs-line-to"]>a.to||b["rhs-line-from"]a.from&&b["rhs-line-to"]>a.to?!1:!0:!0},_set_top_offset:function(a){var b=this.editor[a].getScrollInfo().top;this.editor[a].scrollTo(null,0);var c=jQuery("#"+this.id+" .CodeMirror-measure").first(),d=c.offset().top-4;return d?(this.editor[a].scrollTo(null,b),this.draw_top_offset=.5-d,!0):!1},_calculate_offsets:function(a,b,c){if(null==this.em_height){if(!this._set_top_offset(a))return;this.em_height=this.editor[a].defaultTextHeight(),this.em_height||(console.warn("Failed to calculate offsets, using 18 by default"),this.em_height=18),this.draw_lhs_min=.5;var d=jQuery("#"+a+"-"+b+"-canvas");if(d.length||console.error("failed to find canvas","#"+a+"-"+b+"-canvas"),!d.width())return console.error("canvas width is 0"),void 0;this.draw_mid_width=jQuery("#"+a+"-"+b+"-canvas").width(),this.draw_rhs_max=this.draw_mid_width-.5,this.draw_lhs_width=5,this.draw_rhs_width=5,this.trace("calc","change offsets calculated",{top_offset:this.draw_top_offset,lhs_min:this.draw_lhs_min,rhs_max:this.draw_rhs_max,lhs_width:this.draw_lhs_width,rhs_width:this.draw_rhs_width})}for(var e=this.editor[a].charCoords({line:0}),f=this.editor[b].charCoords({line:0}),g=this._get_viewport(a,b),h=0;h=0?i["lhs-line-from"]:0,k=i["lhs-line-to"]>=0?i["lhs-line-to"]:0,l=i["rhs-line-from"]>=0?i["rhs-line-from"]:0,m=i["rhs-line-to"]>=0?i["rhs-line-to"]:0;if(this.editor[a].getOption("lineWrapping")||this.editor[a].getOption("lineWrapping")){var r=this.editor[a].cursorCoords({line:j,ch:0},"page"),s=this.editor[a].getLineHandle(j);n={top:r.top,bottom:r.top+s.height};var t=this.editor[a].cursorCoords({line:k,ch:0},"page"),u=this.editor[a].getLineHandle(k);o={top:t.top,bottom:t.top+u.height};var r=this.editor[b].cursorCoords({line:l,ch:0},"page"),v=this.editor[b].getLineHandle(l);p={top:r.top,bottom:r.top+v.height};var t=this.editor[b].cursorCoords({line:m,ch:0},"page"),w=this.editor[b].getLineHandle(m);q={top:t.top,bottom:t.top+w.height}}else n={top:e.top+j*this.em_height,bottom:e.bottom+j*this.em_height+2},o={top:e.top+k*this.em_height,bottom:e.bottom+k*this.em_height+2},p={top:f.top+l*this.em_height,bottom:f.bottom+l*this.em_height+2},q={top:f.top+m*this.em_height,bottom:f.bottom+m*this.em_height+2};"a"==i.op?l>0&&(n.top=n.bottom,n.bottom+=this.em_height,o=n):"d"==i.op&&j>0&&(p.top=p.bottom,p.bottom+=this.em_height,q=p),i["lhs-y-start"]=this.draw_top_offset+n.top,i["lhs-y-end"]="c"==i.op||"d"==i.op?this.draw_top_offset+o.bottom:this.draw_top_offset+o.top,i["rhs-y-start"]=this.draw_top_offset+p.top,i["rhs-y-end"]="c"==i.op||"a"==i.op?this.draw_top_offset+q.bottom:this.draw_top_offset+q.top,this.trace("calc","change calculated",h,i)}else delete i["lhs-y-start"],delete i["lhs-y-end"],delete i["rhs-y-start"],delete i["rhs-y-end"]}return c},_markup_changes:function(a,b,c){jQuery(".merge-button").remove();var d=this,e=this.editor[a],f=this.editor[b],g=new Mgly.Timer;e.operation(function(){for(var a=0;a=0?b["lhs-line-from"]:0,h=b["lhs-line-to"]>=0?b["lhs-line-to"]:0,i=b["rhs-line-from"]>=0?b["rhs-line-from"]:0;b["rhs-line-to"]>=0?b["rhs-line-to"]:0;var k=["mergely","lhs",b.op,"cid-"+a];if(e.addLineClass(g,"background","start"),e.addLineClass(h,"background","end"),0==g&&0==h&&0==i)e.addLineClass(g,"background",k.join(" ")),e.addLineClass(g,"background","first");else for(var l=g;h>=l;++l)e.addLineClass(l,"background",k.join(" ")),e.addLineClass(l,"background",k.join(" "));if(!f.getOption("readOnly")){var m=d.merge_rhs_button.clone();m.button&&m.button({icons:{primary:"ui-icon-triangle-1-e"},text:!1}),m.addClass("merge-button"),m.attr("id","merge-rhs-"+a),e.setGutterMarker(g,"merge",m.get(0))}}});var h=this._get_viewport(a,b);this.trace("change","markup lhs-editor time",g.stop()),f.operation(function(){for(var a=0;a=0?b["lhs-line-from"]:0;b["lhs-line-to"]>=0?b["lhs-line-to"]:0;var j=b["rhs-line-from"]>=0?b["rhs-line-from"]:0,k=b["rhs-line-to"]>=0?b["rhs-line-to"]:0;if(d._is_change_in_view(h,b)){var l=["mergely","rhs",b.op,"cid-"+a];if(f.addLineClass(j,"background","start"),f.addLineClass(k,"background","end"),0==j&&0==k&&0==g)f.addLineClass(j,"background",l.join(" ")),f.addLineClass(j,"background","first");else for(var m=j;k>=m;++m)f.addLineClass(m,"background",l.join(" ")),f.addLineClass(m,"background",l.join(" "));if(!e.getOption("readOnly")){var n=d.merge_lhs_button.clone();n.button&&n.button({icons:{primary:"ui-icon-triangle-1-w"},text:!1}),n.addClass("merge-button"),n.attr("id","merge-lhs-"+a),f.setGutterMarker(j,"merge",n.get(0))}}}}),this.trace("change","markup rhs-editor time",g.stop());for(var i=[],j=0;this.settings.lcs&&j=0?k["lhs-line-from"]:0,m=k["lhs-line-to"]>=0?k["lhs-line-to"]:0,n=k["rhs-line-from"]>=0?k["rhs-line-from"]:0,o=k["rhs-line-to"]>=0?k["rhs-line-to"]:0;if(this._is_change_in_view(h,k))if("d"==k.op){var p=l,q=m,r=e.lineInfo(q);r&&i.push([e,{line:p,ch:0},{line:q,ch:r.text.length},{className:"mergely ch d lhs"}])}else if("c"==k.op)for(var s=l,t=n,u=0;s>=0&&m>=s||t>=0&&o>=t;++s,++t)if(t+u>o){var v=e.getLine(s);i.push([e,{line:s,ch:0},{line:s,ch:v.length},{className:"mergely ch d lhs"}])}else if(s+u>m){var w=f.getLine(t);i.push([f,{line:t,ch:0},{line:t,ch:w.length},{className:"mergely ch a rhs"}])}else{var v=e.getLine(s),w=f.getLine(t),B=new Mgly.LCS(v,w);B.diff(function(a,b){i.push([f,{line:t,ch:a},{line:t,ch:b},{className:"mergely ch a rhs"}])},removed=function(a,b){i.push([e,{line:s,ch:a},{line:s,ch:b},{className:"mergely ch d lhs"}])})}}this.trace("change","LCS marktext time",g.stop()),e.operation(function(){for(var a=0;a=h;--j)f[c].removeLine(j);else if("lhs"==b)if("a"==a.op)for(var h=parseInt(a[c+"-line-from"]),i=parseInt(a[c+"-line-to"]),j=i;j>=h;--j)f[c].removeLine(j);else f[c].replaceRange(g,CodeMirror.Pos(a[c+"-line-from"]+1,0));f.lhs.setValue(f.lhs.getValue()),f.rhs.setValue(f.rhs.getValue()),this._scroll_to_change(a)}},_draw_info:function(a,b){var c=jQuery(this.editor[a].getScrollerElement()).height(),d=jQuery(this.editor[a].getScrollerElement()).children(":first-child").height(),e=document.getElementById(a+"-"+b+"-canvas");if(void 0==e)throw"Failed to find: "+a+"-"+b+"-canvas";var f=jQuery("#"+this.id+"-lhs-margin"),g=jQuery("#"+this.id+"-rhs-margin");return{visible_page_height:c,gutter_height:d,visible_page_ratio:c/d,margin_ratio:c/d,lhs_scroller:jQuery(this.editor[a].getScrollerElement()),rhs_scroller:jQuery(this.editor[b].getScrollerElement()),lhs_lines:this.editor[a].lineCount(),rhs_lines:this.editor[b].lineCount(),dcanvas:e,clhs:f,crhs:g,lhs_xyoffset:jQuery(f).offset(),rhs_xyoffset:jQuery(g).offset()}},_draw_diff:function(a,b,c){var d=this._draw_info(a,b),e=d.clhs.get(0),f=d.crhs.get(0),g=d.dcanvas.getContext("2d"),h=e.getContext("2d"),i=f.getContext("2d");this.trace("draw","visible_page_height",d.visible_page_height),this.trace("draw","gutter_height",d.gutter_height),this.trace("draw","visible_page_ratio",d.visible_page_ratio),this.trace("draw","lhs-scroller-top",d.lhs_scroller.scrollTop()),this.trace("draw","rhs-scroller-top",d.rhs_scroller.scrollTop()),jQuery.each(jQuery.find("#"+this.id+" canvas"),function(){jQuery(this).get(0).height=d.visible_page_height}),d.clhs.unbind("click"),d.crhs.unbind("click"),h.beginPath(),h.fillStyle=this.settings.bgcolor,h.strokeStyle="#888",h.fillRect(0,0,6.5,d.visible_page_height),h.strokeRect(0,0,6.5,d.visible_page_height),i.beginPath(),i.fillStyle=this.settings.bgcolor,i.strokeStyle="#888",i.fillRect(0,0,6.5,d.visible_page_height),i.strokeRect(0,0,6.5,d.visible_page_height);for(var j=this._get_viewport(a,b),k=0;k=s?g.lineTo(t+r,u):(g.arcTo(t+r,u,t+r,u+q,q),g.arcTo(t+r,u+s,t+r-q,u+s,q)),g.lineTo(t,u+s)),g.stroke(),r=this.draw_rhs_width,s=p-o-1,t=this.draw_rhs_max,u=o,g.moveTo(t,u),"Microsoft Internet Explorer"==navigator.appName?(g.lineTo(this.draw_rhs_max-this.draw_rhs_width,o),g.lineTo(this.draw_rhs_max-this.draw_rhs_width,p+1),g.lineTo(this.draw_rhs_max,p+1)):(0>=s?g.lineTo(t-r,u):(g.arcTo(t-r,u,t-r,u+q,q),g.arcTo(t-r,u+s,t-q,u+s,q)),g.lineTo(t,u+s)),g.stroke();var v=this.draw_lhs_min+this.draw_lhs_width,w=m+(n+1-m)/2,x=this.draw_rhs_max-this.draw_rhs_width,y=o+(p+1-o)/2;g.moveTo(v,w),w==y?g.lineTo(x,y):g.bezierCurveTo(v+12,w-3,x-12,y-3,x,y),g.stroke()}}h.fillStyle=this.settings.vpcolor,i.fillStyle=this.settings.vpcolor;var z=d.clhs.height()*d.visible_page_ratio,A=d.lhs_scroller.scrollTop()/d.gutter_height*d.clhs.height(),B=d.crhs.height()*d.visible_page_ratio,C=d.rhs_scroller.scrollTop()/d.gutter_height*d.crhs.height();this.trace("draw","cls.height",d.clhs.height()),this.trace("draw","lhs_scroller.scrollTop()",d.lhs_scroller.scrollTop()),this.trace("draw","gutter_height",d.gutter_height),this.trace("draw","visible_page_ratio",d.visible_page_ratio),this.trace("draw","lhs from",A,"lhs to",z),this.trace("draw","rhs from",C,"rhs to",B),h.fillRect(1.5,A,4.5,z),i.fillRect(1.5,C,4.5,B),d.clhs.click(function(a){var b=a.pageY-d.lhs_xyoffset.top-z/2,c=Math.max(0,b/e.height*d.lhs_scroller.get(0).scrollHeight);d.lhs_scroller.scrollTop(c)}),d.crhs.click(function(a){var b=a.pageY-d.rhs_xyoffset.top-B/2,c=Math.max(0,b/f.height*d.rhs_scroller.get(0).scrollHeight);d.rhs_scroller.scrollTop(c)})},trace:function(a){this.settings._debug.indexOf(a)>=0&&(arguments[0]=a+":",console.log([].slice.apply(arguments)))}}),jQuery.pluginMaker=function(a){jQuery.fn[a.prototype.name]=function(b){var c=jQuery.makeArray(arguments),d=c.slice(1),e=void 0;return this.each(function(){var f=jQuery.data(this,a.prototype.name);if(f){if("string"==typeof b)e=f[b].apply(f,d);else if(f.update)return f.update.apply(f,c)}else new a(this,b)}),void 0!=e?e:void 0}},jQuery.pluginMaker(Mgly.mergely); \ No newline at end of file diff --git a/lib/searchcursor.js b/lib/searchcursor.js new file mode 100644 index 0000000..7cb44e4 --- /dev/null +++ b/lib/searchcursor.js @@ -0,0 +1,131 @@ +(function(){ + var Pos = CodeMirror.Pos; + + function SearchCursor(cm, query, pos, caseFold) { + this.atOccurrence = false; this.cm = cm; + if (caseFold == null && typeof query == "string") caseFold = false; + + pos = pos ? cm.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 = cm.getLine(pos.line).slice(0, pos.ch), match = query.exec(line), start = 0; + while (match) { + start += match.index + 1; + line = line.slice(start); + query.lastIndex = 0; + var newmatch = query.exec(line); + if (newmatch) match = newmatch; + else break; + } + start--; + } else { + query.lastIndex = pos.ch; + var line = cm.getLine(pos.line), match = query.exec(line), + start = match && match.index; + } + if (match && match[0]) + return {from: Pos(pos.line, start), + to: Pos(pos.line, start + match[0].length), + 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(cm.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(cm.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 == cm.lineCount() - 1) return; + line = fold(cm.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.cm.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.cm.getLine(pos.line-1).length); + } + else { + var maxLine = this.cm.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.cm.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, query, pos, caseFold); + }); +})(); \ No newline at end of file