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Diffstat (limited to 'static/website/js/codemirror.js')
| -rw-r--r-- | static/website/js/codemirror.js | 5944 |
1 files changed, 0 insertions, 5944 deletions
diff --git a/static/website/js/codemirror.js b/static/website/js/codemirror.js deleted file mode 100644 index 8995069..0000000 --- a/static/website/js/codemirror.js +++ /dev/null @@ -1,5944 +0,0 @@ -// CodeMirror version 3.20 -// -// 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); - // IE11 currently doesn't count as 'ie', since it has almost none of - // the same bugs as earlier versions. Use ie_gt10 to handle - // incompatibilities in that version. - 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 ie_gt10 = /Trident\/([7-9]|\d{2,})\./.test(navigator.userAgent); - 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 = /win/i.test(navigator.platform); - - var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/); - if (opera_version) opera_version = Number(opera_version[1]); - if (opera_version && opera_version >= 15) { opera = false; webkit = true; } - // Some browsers use the wrong event properties to signal cmd/ctrl on OS X - var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11)); - var captureMiddleClick = gecko || (ie && !ie_lt9); - - // Optimize some code when these features are not used - var sawReadOnlySpans = false, sawCollapsedSpans = false; - - // CONSTRUCTOR - - function CodeMirror(place, options) { - if (!(this instanceof CodeMirror)) return new CodeMirror(place, options); - - this.options = options = options || {}; - // Determine effective options based on given values and defaults. - for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt)) - options[opt] = defaults[opt]; - setGuttersForLineNumbers(options); - - var docStart = typeof options.value == "string" ? 0 : options.value.first; - var display = this.display = makeDisplay(place, docStart); - display.wrapper.CodeMirror = this; - updateGutters(this); - if (options.autofocus && !mobile) focusInput(this); - - this.state = {keyMaps: [], - overlays: [], - modeGen: 0, - overwrite: false, focused: false, - suppressEdits: false, pasteIncoming: false, - draggingText: false, - highlight: new Delayed()}; - - themeChanged(this); - if (options.lineWrapping) - this.display.wrapper.className += " CodeMirror-wrap"; - - var doc = options.value; - if (typeof doc == "string") doc = new Doc(options.value, options.mode); - operation(this, attachDoc)(this, doc); - - // Override magic textarea content restore that IE sometimes does - // on our hidden textarea on reload - if (ie) setTimeout(bind(resetInput, this, true), 20); - - registerEventHandlers(this); - // IE throws unspecified error in certain cases, when - // trying to access activeElement before onload - var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { } - if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20); - else onBlur(this); - - operation(this, function() { - for (var opt in optionHandlers) - if (optionHandlers.propertyIsEnumerable(opt)) - optionHandlers[opt](this, options[opt], Init); - for (var i = 0; i < initHooks.length; ++i) initHooks[i](this); - })(); - } - - // DISPLAY CONSTRUCTOR - - function makeDisplay(place, docStart) { - var d = {}; - - var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none; font-size: 4px;"); - if (webkit) input.style.width = "1000px"; - else input.setAttribute("wrap", "off"); - // if border: 0; -- iOS fails to open keyboard (issue #1287) - if (ios) input.style.border = "1px solid black"; - input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false"); - - // Wraps and hides input textarea - d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); - // The actual fake scrollbars. - d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar"); - d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar"); - d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); - d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler"); - // DIVs containing the selection and the actual code - d.lineDiv = elt("div", null, "CodeMirror-code"); - d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); - // Blinky cursor, and element used to ensure cursor fits at the end of a line - d.cursor = elt("div", "\u00a0", "CodeMirror-cursor"); - // Secondary cursor, shown when on a 'jump' in bi-directional text - d.otherCursor = elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"); - // Used to measure text size - d.measure = elt("div", null, "CodeMirror-measure"); - // Wraps everything that needs to exist inside the vertically-padded coordinate system - d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor], - null, "position: relative; outline: none"); - // Moved around its parent to cover visible view - d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative"); - // Set to the height of the text, causes scrolling - d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); - // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers - d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;"); - // Will contain the gutters, if any - d.gutters = elt("div", null, "CodeMirror-gutters"); - d.lineGutter = null; - // Provides scrolling - d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll"); - d.scroller.setAttribute("tabIndex", "-1"); - // The element in which the editor lives. - d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV, - d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror"); - // Work around IE7 z-index bug - if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } - if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper); - - // Needed to hide big blue blinking cursor on Mobile Safari - if (ios) input.style.width = "0px"; - if (!webkit) d.scroller.draggable = true; - // Needed to handle Tab key in KHTML - if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; } - // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). - else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px"; - - // Current visible range (may be bigger than the view window). - d.viewOffset = d.lastSizeC = 0; - d.showingFrom = d.showingTo = docStart; - - // Used to only resize the line number gutter when necessary (when - // the amount of lines crosses a boundary that makes its width change) - d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null; - // See readInput and resetInput - d.prevInput = ""; - // Set to true when a non-horizontal-scrolling widget is added. As - // an optimization, widget aligning is skipped when d is false. - d.alignWidgets = false; - // Flag that indicates whether we currently expect input to appear - // (after some event like 'keypress' or 'input') and are polling - // intensively. - d.pollingFast = false; - // Self-resetting timeout for the poller - d.poll = new Delayed(); - - d.cachedCharWidth = d.cachedTextHeight = null; - d.measureLineCache = []; - d.measureLineCachePos = 0; - - // Tracks when resetInput has punted to just putting a short - // string instead of the (large) selection. - d.inaccurateSelection = false; - - // Tracks the maximum line length so that the horizontal scrollbar - // can be kept static when scrolling. - d.maxLine = null; - d.maxLineLength = 0; - d.maxLineChanged = false; - - // Used for measuring wheel scrolling granularity - d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null; - - return d; - } - - // STATE UPDATES - - // Used to get the editor into a consistent state again when options change. - - function loadMode(cm) { - cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption); - cm.doc.iter(function(line) { - if (line.stateAfter) line.stateAfter = null; - if (line.styles) line.styles = null; - }); - cm.doc.frontier = cm.doc.first; - startWorker(cm, 100); - cm.state.modeGen++; - if (cm.curOp) regChange(cm); - } - - function wrappingChanged(cm) { - if (cm.options.lineWrapping) { - cm.display.wrapper.className += " CodeMirror-wrap"; - cm.display.sizer.style.minWidth = ""; - } else { - cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", ""); - computeMaxLength(cm); - } - estimateLineHeights(cm); - regChange(cm); - clearCaches(cm); - setTimeout(function(){updateScrollbars(cm);}, 100); - } - - function estimateHeight(cm) { - var th = textHeight(cm.display), wrapping = cm.options.lineWrapping; - var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3); - return function(line) { - if (lineIsHidden(cm.doc, line)) - return 0; - else if (wrapping) - return (Math.ceil(line.text.length / perLine) || 1) * th; - else - return th; - }; - } - - function estimateLineHeights(cm) { - var doc = cm.doc, est = estimateHeight(cm); - doc.iter(function(line) { - var estHeight = est(line); - if (estHeight != line.height) updateLineHeight(line, estHeight); - }); - } - - function keyMapChanged(cm) { - var map = keyMap[cm.options.keyMap], style = map.style; - cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") + - (style ? " cm-keymap-" + style : ""); - cm.state.disableInput = map.disableInput; - } - - function themeChanged(cm) { - cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + - cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); - clearCaches(cm); - } - - function guttersChanged(cm) { - updateGutters(cm); - regChange(cm); - setTimeout(function(){alignHorizontally(cm);}, 20); - } - - function updateGutters(cm) { - var gutters = cm.display.gutters, specs = cm.options.gutters; - removeChildren(gutters); - for (var i = 0; i < specs.length; ++i) { - var gutterClass = specs[i]; - var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)); - if (gutterClass == "CodeMirror-linenumbers") { - cm.display.lineGutter = gElt; - gElt.style.width = (cm.display.lineNumWidth || 1) + "px"; - } - } - gutters.style.display = i ? "" : "none"; - } - - function lineLength(doc, line) { - if (line.height == 0) return 0; - var len = line.text.length, merged, cur = line; - while (merged = collapsedSpanAtStart(cur)) { - var found = merged.find(); - cur = getLine(doc, found.from.line); - len += found.from.ch - found.to.ch; - } - cur = line; - while (merged = collapsedSpanAtEnd(cur)) { - var found = merged.find(); - len -= cur.text.length - found.from.ch; - cur = getLine(doc, found.to.line); - len += cur.text.length - found.to.ch; - } - return len; - } - - function computeMaxLength(cm) { - var d = cm.display, doc = cm.doc; - d.maxLine = getLine(doc, doc.first); - d.maxLineLength = lineLength(doc, d.maxLine); - d.maxLineChanged = true; - doc.iter(function(line) { - var len = lineLength(doc, line); - if (len > d.maxLineLength) { - d.maxLineLength = len; - d.maxLine = line; - } - }); - } - - // Make sure the gutters options contains the element - // "CodeMirror-linenumbers" when the lineNumbers option is true. - function setGuttersForLineNumbers(options) { - var found = indexOf(options.gutters, "CodeMirror-linenumbers"); - if (found == -1 && options.lineNumbers) { - options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]); - } else if (found > -1 && !options.lineNumbers) { - options.gutters = options.gutters.slice(0); - options.gutters.splice(found, 1); - } - } - - // SCROLLBARS - - // Re-synchronize the fake scrollbars with the actual size of the - // content. Optionally force a scrollTop. - function updateScrollbars(cm) { - var d = cm.display, docHeight = cm.doc.height; - var totalHeight = docHeight + paddingVert(d); - d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px"; - d.gutters.style.height = Math.max(totalHeight, d.scroller.clientHeight - scrollerCutOff) + "px"; - var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight); - var needsH = d.scroller.scrollWidth > (d.scroller.clientWidth + 1); - var needsV = scrollHeight > (d.scroller.clientHeight + 1); - 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 = ""; - d.scrollbarV.firstChild.style.height = "0"; - } - 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 = ""; - d.scrollbarH.firstChild.style.width = "0"; - } - if (needsH && needsV) { - d.scrollbarFiller.style.display = "block"; - d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px"; - } else d.scrollbarFiller.style.display = ""; - if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { - d.gutterFiller.style.display = "block"; - d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px"; - d.gutterFiller.style.width = d.gutters.offsetWidth + "px"; - } else d.gutterFiller.style.display = ""; - - if (mac_geLion && scrollbarWidth(d.measure) === 0) { - d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px"; - d.scrollbarV.style.pointerEvents = d.scrollbarH.style.pointerEvents = "none"; - } - } - - 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, forced) { - var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo, updated; - var visible = visibleLines(cm.display, cm.doc, viewPort); - for (var first = true;; first = false) { - var oldWidth = cm.display.scroller.clientWidth; - if (!updateDisplayInner(cm, changes, visible, forced)) break; - updated = true; - changes = []; - updateSelection(cm); - updateScrollbars(cm); - if (first && cm.options.lineWrapping && oldWidth != cm.display.scroller.clientWidth) { - forced = true; - continue; - } - forced = false; - - // Clip forced viewport to actual scrollable area - if (viewPort) - viewPort = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, - typeof viewPort == "number" ? viewPort : viewPort.top); - visible = visibleLines(cm.display, cm.doc, viewPort); - if (visible.from >= cm.display.showingFrom && visible.to <= cm.display.showingTo) - break; - } - - if (updated) { - signalLater(cm, "update", cm); - if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo) - signalLater(cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo); - } - return updated; - } - - // Uses a set of changes plus the current scroll position to - // determine which DOM updates have to be made, and makes the - // updates. - function updateDisplayInner(cm, changes, visible, forced) { - var display = cm.display, doc = cm.doc; - if (!display.wrapper.clientWidth) { - display.showingFrom = display.showingTo = doc.first; - display.viewOffset = 0; - return; - } - - // Bail out if the visible area is already rendered and nothing changed. - if (!forced && 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 && changes[i].from < positionsChangedFrom) { positionsChangedFrom = changes[i].from; } - - 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 (!forced && intactLines == to - from && from == display.showingFrom && to == display.showingTo) { - updateViewOffset(cm); - return; - } - intact.sort(function(a, b) {return a.from - b.from;}); - - // Avoid crashing on IE's "unspecified error" when in iframes - try { - var focused = document.activeElement; - } catch(e) {} - if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none"; - patchDisplay(cm, from, to, intact, positionsChangedFrom); - display.lineDiv.style.display = ""; - if (focused && document.activeElement != focused && focused.offsetHeight) focused.focus(); - - var different = from != display.showingFrom || to != display.showingTo || - display.lastSizeC != display.wrapper.clientHeight; - // This is just a bogus formula that detects when the editor is - // resized or the font size changes. - if (different) { - display.lastSizeC = display.wrapper.clientHeight; - startWorker(cm, 400); - } - display.showingFrom = from; display.showingTo = to; - - updateHeightsInViewport(cm); - updateViewOffset(cm); - - return true; - } - - function updateHeightsInViewport(cm) { - var display = cm.display; - 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; - } - } - } - - 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 && cur.previousSibling) for (var i = 0; i < line.widgets.length; ++i) { - var w = line.widgets[i]; - if (w.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", [w.node], "CodeMirror-linewidget")); - if (!w.handleMouseEvents) wnode.ignoreEvents = true; - positionLineWidget(w, 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 built = buildLineContent(cm, line), lineElement = built.pre; - var markers = line.gutterMarkers, display = cm.display, wrap; - - var bgClass = built.bgClass ? built.bgClass + " " + (line.bgClass || "") : line.bgClass; - if (!cm.options.lineNumbers && !markers && !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, insertBefore = null; - 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; i < line.widgets.length; ++i) { - var widget = line.widgets[i]; - if (widget.node == n.firstChild) { - if (!widget.above && !insertBefore) insertBefore = n; - positionLineWidget(widget, n, reuse, dims); - ++widgetsSeen; - break; - } - } - if (i == line.widgets.length) { isOk = false; break; } - } - } - reuse.insertBefore(lineElement, insertBefore); - 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 (bgClass) - wrap.insertBefore(elt("div", null, 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"); - if (!widget.handleMouseEvents) node.ignoreEvents = true; - positionLineWidget(widget, node, wrap, dims); - if (widget.above) - wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement); - else - wrap.appendChild(node); - signalLater(widget, "redraw"); - } - return wrap; - } - - function positionLineWidget(widget, node, wrap, dims) { - if (widget.noHScroll) { - (wrap.alignable || (wrap.alignable = [])).push(node); - var width = dims.wrapperWidth; - node.style.left = dims.fixedPos + "px"; - if (!widget.coverGutter) { - width -= dims.gutterTotalWidth; - node.style.paddingLeft = dims.gutterTotalWidth + "px"; - } - node.style.width = width + "px"; - } - if (widget.coverGutter) { - node.style.zIndex = 5; - node.style.position = "relative"; - if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px"; - } - } - - // SELECTION / CURSOR - - function updateSelection(cm) { - var display = cm.display; - var collapsed = posEq(cm.doc.sel.from, cm.doc.sel.to); - if (collapsed || cm.options.showCursorWhenSelecting) - updateSelectionCursor(cm); - else - display.cursor.style.display = display.otherCursor.style.display = "none"; - if (!collapsed) - updateSelectionRange(cm); - else - display.selectionDiv.style.display = "none"; - - // Move the hidden textarea near the cursor to prevent scrolling artifacts - if (cm.options.moveInputWithCursor) { - var headPos = cursorCoords(cm, cm.doc.sel.head, "div"); - var wrapOff = getRect(display.wrapper), lineOff = getRect(display.lineDiv); - display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10, - headPos.top + lineOff.top - wrapOff.top)) + "px"; - display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10, - headPos.left + lineOff.left - wrapOff.left)) + "px"; - } - } - - // No selection, plain cursor - function updateSelectionCursor(cm) { - var display = cm.display, pos = cursorCoords(cm, cm.doc.sel.head, "div"); - display.cursor.style.left = pos.left + "px"; - display.cursor.style.top = pos.top + "px"; - display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; - display.cursor.style.display = ""; - - if (pos.other) { - display.otherCursor.style.display = ""; - display.otherCursor.style.left = pos.other.left + "px"; - display.otherCursor.style.top = pos.other.top + "px"; - display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; - } else { display.otherCursor.style.display = "none"; } - } - - // Highlight selection - function updateSelectionRange(cm) { - var display = cm.display, doc = cm.doc, sel = cm.doc.sel; - var fragment = document.createDocumentFragment(); - var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display); - - function add(left, top, width, bottom) { - if (top < 0) top = 0; - fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left + - "px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) + - "px; height: " + (bottom - top) + "px")); - } - - function drawForLine(line, fromArg, toArg) { - var lineObj = getLine(doc, line); - var lineLen = lineObj.text.length; - var start, end; - function coords(ch, bias) { - return charCoords(cm, Pos(line, ch), "div", lineObj, bias); - } - - iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) { - var leftPos = coords(from, "left"), rightPos, left, right; - if (from == to) { - rightPos = leftPos; - left = right = leftPos.left; - } else { - rightPos = coords(to - 1, "right"); - if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; } - left = leftPos.left; - right = rightPos.right; - } - if (fromArg == null && from == 0) left = pl; - 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 (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left) - start = leftPos; - if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right) - end = rightPos; - if (left < pl + 1) left = pl; - add(left, rightPos.top, right - left, rightPos.bottom); - }); - return {start: start, end: end}; - } - - if (sel.from.line == sel.to.line) { - drawForLine(sel.from.line, sel.from.ch, sel.to.ch); - } else { - var fromLine = getLine(doc, sel.from.line), toLine = getLine(doc, sel.to.line); - var singleVLine = visualLine(doc, fromLine) == visualLine(doc, toLine); - var leftEnd = drawForLine(sel.from.line, sel.from.ch, singleVLine ? fromLine.text.length : null).end; - var rightStart = drawForLine(sel.to.line, singleVLine ? 0 : null, sel.to.ch).start; - if (singleVLine) { - if (leftEnd.top < rightStart.top - 2) { - add(leftEnd.right, leftEnd.top, null, leftEnd.bottom); - add(pl, rightStart.top, rightStart.left, rightStart.bottom); - } else { - add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom); - } - } - if (leftEnd.bottom < rightStart.top) - add(pl, leftEnd.bottom, null, rightStart.top); - } - - removeChildrenAndAdd(display.selectionDiv, fragment); - display.selectionDiv.style.display = ""; - } - - // Cursor-blinking - function restartBlink(cm) { - if (!cm.state.focused) return; - var display = cm.display; - clearInterval(display.blinker); - var on = true; - display.cursor.style.visibility = display.otherCursor.style.visibility = ""; - if (cm.options.cursorBlinkRate > 0) - display.blinker = setInterval(function() { - display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden"; - }, cm.options.cursorBlinkRate); - } - - // HIGHLIGHT WORKER - - function startWorker(cm, time) { - if (cm.doc.mode.startState && cm.doc.frontier < cm.display.showingTo) - cm.state.highlight.set(time, bind(highlightWorker, cm)); - } - - function highlightWorker(cm) { - var doc = cm.doc; - if (doc.frontier < doc.first) doc.frontier = doc.first; - if (doc.frontier >= cm.display.showingTo) return; - var end = +new Date + cm.options.workTime; - var state = copyState(doc.mode, getStateBefore(cm, doc.frontier)); - var changed = [], prevChange; - doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.showingTo + 500), function(line) { - if (doc.frontier >= cm.display.showingFrom) { // Visible - var oldStyles = line.styles; - line.styles = highlightLine(cm, line, state, true); - 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.text, state); - line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null; - } - ++doc.frontier; - if (+new Date > end) { - startWorker(cm, cm.options.workDelay); - return true; - } - }); - if (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, precise) { - var minindent, minline, doc = cm.doc; - var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100); - for (var search = n; search > lim; --search) { - if (search <= doc.first) return doc.first; - var line = getLine(doc, search - 1); - if (line.stateAfter && (!precise || search <= doc.frontier)) return search; - var indented = countColumn(line.text, null, cm.options.tabSize); - if (minline == null || minindent > indented) { - minline = search - 1; - minindent = indented; - } - } - return minline; - } - - function getStateBefore(cm, n, precise) { - var doc = cm.doc, display = cm.display; - if (!doc.mode.startState) return true; - var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter; - if (!state) state = startState(doc.mode); - else state = copyState(doc.mode, state); - doc.iter(pos, n, function(line) { - processLine(cm, line.text, state); - var save = pos == n - 1 || pos % 5 == 0 || pos >= display.showingFrom && pos < display.showingTo; - line.stateAfter = save ? copyState(doc.mode, state) : null; - ++pos; - }); - if (precise) doc.frontier = pos; - return state; - } - - // POSITION MEASUREMENT - - function paddingTop(display) {return display.lineSpace.offsetTop;} - function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;} - function paddingLeft(display) { - var e = removeChildrenAndAdd(display.measure, elt("pre", null, null, "text-align: left")).appendChild(elt("span", "x")); - return e.offsetLeft; - } - - function measureChar(cm, line, ch, data, bias) { - var dir = -1; - data = data || measureLine(cm, line); - if (data.crude) { - var left = data.left + ch * data.width; - return {left: left, right: left + data.width, top: data.top, bottom: data.bottom}; - } - - for (var pos = ch;; pos += dir) { - var r = data[pos]; - if (r) break; - if (dir < 0 && pos == 0) dir = 1; - } - bias = pos > ch ? "left" : pos < ch ? "right" : bias; - if (bias == "left" && r.leftSide) r = r.leftSide; - else if (bias == "right" && r.rightSide) r = r.rightSide; - return {left: pos < ch ? r.right : r.left, - right: pos > ch ? r.left : r.right, - top: r.top, - bottom: r.bottom}; - } - - function findCachedMeasurement(cm, line) { - var cache = cm.display.measureLineCache; - for (var i = 0; i < cache.length; ++i) { - var memo = cache[i]; - if (memo.text == line.text && memo.markedSpans == line.markedSpans && - cm.display.scroller.clientWidth == memo.width && - memo.classes == line.textClass + "|" + line.wrapClass) - return memo; - } - } - - function clearCachedMeasurement(cm, line) { - var exists = findCachedMeasurement(cm, line); - if (exists) exists.text = exists.measure = exists.markedSpans = null; - } - - function measureLine(cm, line) { - // First look in the cache - var cached = findCachedMeasurement(cm, line); - if (cached) return cached.measure; - - // Failing that, recompute and store result in cache - var measure = measureLineInner(cm, line); - var cache = cm.display.measureLineCache; - var memo = {text: line.text, width: cm.display.scroller.clientWidth, - markedSpans: line.markedSpans, measure: measure, - classes: line.textClass + "|" + line.wrapClass}; - if (cache.length == 16) cache[++cm.display.measureLineCachePos % 16] = memo; - else cache.push(memo); - return measure; - } - - function measureLineInner(cm, line) { - if (!cm.options.lineWrapping && line.text.length >= cm.options.crudeMeasuringFrom) - return crudelyMeasureLine(cm, line); - - var display = cm.display, measure = emptyArray(line.text.length); - var pre = buildLineContent(cm, line, measure, true).pre; - - // 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); - - function measureRect(rect) { - var top = rect.top - outer.top, bot = rect.bottom - outer.top; - if (bot > maxBot) bot = maxBot; - if (top < 0) top = 0; - for (var i = vranges.length - 2; i >= 0; i -= 2) { - var rtop = vranges[i], rbot = vranges[i+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[i] = Math.min(top, rtop); - vranges[i+1] = Math.max(bot, rbot); - break; - } - } - if (i < 0) { i = vranges.length; vranges.push(top, bot); } - return {left: rect.left - outer.left, - right: rect.right - outer.left, - top: i, bottom: null}; - } - function finishRect(rect) { - rect.bottom = vranges[rect.top+1]; - rect.top = vranges[rect.top]; - } - - for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) { - var node = cur, rect = null; - // A widget might wrap, needs special care - if (/\bCodeMirror-widget\b/.test(cur.className) && cur.getClientRects) { - if (cur.firstChild.nodeType == 1) node = cur.firstChild; - var rects = node.getClientRects(); - if (rects.length > 1) { - rect = data[i] = measureRect(rects[0]); - rect.rightSide = measureRect(rects[rects.length - 1]); - } - } - if (!rect) rect = data[i] = measureRect(getRect(node)); - if (cur.measureRight) rect.right = getRect(cur.measureRight).left; - if (cur.leftSide) rect.leftSide = measureRect(getRect(cur.leftSide)); - } - removeChildren(cm.display.measure); - for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) { - finishRect(cur); - if (cur.leftSide) finishRect(cur.leftSide); - if (cur.rightSide) finishRect(cur.rightSide); - } - return data; - } - - function crudelyMeasureLine(cm, line) { - var copy = new Line(line.text.slice(0, 100), null); - if (line.textClass) copy.textClass = line.textClass; - var measure = measureLineInner(cm, copy); - var left = measureChar(cm, copy, 0, measure, "left"); - var right = measureChar(cm, copy, 99, measure, "right"); - return {crude: true, top: left.top, left: left.left, bottom: left.bottom, width: (right.right - left.left) / 100}; - } - - function measureLineWidth(cm, line) { - var hasBadSpan = false; - if (line.markedSpans) for (var i = 0; i < line.markedSpans; ++i) { - var sp = line.markedSpans[i]; - if (sp.collapsed && (sp.to == null || sp.to == line.text.length)) hasBadSpan = true; - } - var cached = !hasBadSpan && findCachedMeasurement(cm, line); - if (cached || line.text.length >= cm.options.crudeMeasuringFrom) - return measureChar(cm, line, line.text.length, cached && cached.measure, "right").right; - - var pre = buildLineContent(cm, line, null, true).pre; - var end = pre.appendChild(zeroWidthElement(cm.display.measure)); - removeChildrenAndAdd(cm.display.measure, pre); - return getRect(end).right - getRect(cm.display.lineDiv).left; - } - - function clearCaches(cm) { - cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0; - cm.display.cachedCharWidth = cm.display.cachedTextHeight = null; - if (!cm.options.lineWrapping) cm.display.maxLineChanged = true; - cm.display.lineNumChars = null; - } - - function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; } - function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; } - - // 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 += paddingTop(cm.display); - else yOff -= cm.display.viewOffset; - if (context == "page" || context == "window") { - var lOff = getRect(cm.display.lineSpace); - yOff += lOff.top + (context == "window" ? 0 : pageScrollY()); - var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()); - rect.left += xOff; rect.right += xOff; - } - rect.top += yOff; rect.bottom += yOff; - return rect; - } - - // Context may be "window", "page", "div", or "local"/null - // Result is in "div" coords - function fromCoordSystem(cm, coords, context) { - if (context == "div") return coords; - var left = coords.left, top = coords.top; - // First move into "page" coordinate system - if (context == "page") { - left -= pageScrollX(); - top -= pageScrollY(); - } else if (context == "local" || !context) { - var localBox = getRect(cm.display.sizer); - left += localBox.left; - top += localBox.top; - } - - var lineSpaceBox = getRect(cm.display.lineSpace); - return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}; - } - - function charCoords(cm, pos, context, lineObj, bias) { - if (!lineObj) lineObj = getLine(cm.doc, pos.line); - return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, null, bias), 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, right ? "right" : "left"); - if (right) m.left = m.right; else m.right = m.left; - return intoCoordSystem(cm, lineObj, m, context); - } - function getBidi(ch, partPos) { - var part = order[partPos], right = part.level % 2; - if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) { - part = order[--partPos]; - ch = bidiRight(part) - (part.level % 2 ? 0 : 1); - right = true; - } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) { - part = order[++partPos]; - ch = bidiLeft(part) - part.level % 2; - right = false; - } - if (right && ch == part.to && ch > part.from) return get(ch - 1); - return get(ch, right); - } - var order = getOrder(lineObj), ch = pos.ch; - if (!order) return get(ch); - var partPos = getBidiPartAt(order, ch); - var val = getBidi(ch, partPos); - if (bidiOther != null) val.other = getBidi(ch, bidiOther); - return val; - } - - function PosWithInfo(line, ch, outside, xRel) { - var pos = new Pos(line, ch); - pos.xRel = xRel; - 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 PosWithInfo(doc.first, 0, true, -1); - var lineNo = lineAtHeight(doc, y), last = doc.first + doc.size - 1; - if (lineNo > last) - return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1); - 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 || found.ch == mergedPos.from.ch && found.xRel > 0)) - lineNo = mergedPos.to.line; - else - return found; - } - } - - function coordsCharInner(cm, lineObj, lineNo, x, y) { - var innerOff = y - heightAtLine(cm, lineObj); - var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth; - var measurement = measureLine(cm, lineObj); - - function getX(ch) { - var sp = cursorCoords(cm, Pos(lineNo, ch), "line", - lineObj, measurement); - wrongLine = true; - if (innerOff > sp.bottom) return sp.left - adjust; - else if (innerOff < sp.top) return sp.left + adjust; - else wrongLine = false; - return sp.left; - } - - var bidi = getOrder(lineObj), dist = lineObj.text.length; - var from = lineLeft(lineObj), to = lineRight(lineObj); - var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine; - - if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1); - // Do a binary search between these bounds. - for (;;) { - if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) { - var ch = x < fromX || x - fromX <= toX - x ? from : to; - var xDiff = x - (ch == from ? fromX : toX); - while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch; - var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside, - xDiff < 0 ? -1 : xDiff ? 1 : 0); - 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: [], - forceUpdate: false, - updateInput: null, - userSelChange: null, - textChanged: null, - selectionChanged: false, - cursorActivity: false, - updateMaxLine: false, - updateScrollPos: false, - id: ++nextOpId - }; - if (!delayedCallbackDepth++) delayedCallbacks = []; - } - - function endOperation(cm) { - var op = cm.curOp, doc = cm.doc, display = cm.display; - cm.curOp = null; - - if (op.updateMaxLine) computeMaxLength(cm); - if (display.maxLineChanged && !cm.options.lineWrapping && display.maxLine) { - var width = measureLineWidth(cm, display.maxLine); - display.sizer.style.minWidth = Math.max(0, width + 3 + scrollerCutOff) + "px"; - display.maxLineChanged = false; - var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + display.sizer.offsetWidth - display.scroller.clientWidth); - if (maxScrollLeft < doc.scrollLeft && !op.updateScrollPos) - setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true); - } - var newScrollPos, updated; - if (op.updateScrollPos) { - newScrollPos = op.updateScrollPos; - } else if (op.selectionChanged && display.scroller.clientHeight) { // don't rescroll if not visible - var coords = cursorCoords(cm, doc.sel.head); - newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom); - } - if (op.changes.length || op.forceUpdate || newScrollPos && newScrollPos.scrollTop != null) { - updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop, op.forceUpdate); - if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop; - } - if (!updated && op.selectionChanged) updateSelection(cm); - if (op.updateScrollPos) { - var top = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, newScrollPos.scrollTop)); - var left = Math.max(0, Math.min(display.scroller.scrollWidth - display.scroller.clientWidth, newScrollPos.scrollLeft)); - display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = top; - display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = left; - alignHorizontally(cm); - if (op.scrollToPos) - scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos.from), - clipPos(cm.doc, op.scrollToPos.to), op.scrollToPos.margin); - } else if (newScrollPos) { - scrollCursorIntoView(cm); - } - if (op.selectionChanged) restartBlink(cm); - - if (cm.state.focused && op.updateInput) - resetInput(cm, op.userSelChange); - - var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers; - if (hidden) for (var i = 0; i < hidden.length; ++i) - if (!hidden[i].lines.length) signal(hidden[i], "hide"); - if (unhidden) for (var i = 0; i < unhidden.length; ++i) - if (unhidden[i].lines.length) signal(unhidden[i], "unhide"); - - var delayed; - if (!--delayedCallbackDepth) { - delayed = delayedCallbacks; - delayedCallbacks = null; - } - if (op.textChanged) - signal(cm, "change", cm, op.textChanged); - if (op.cursorActivity) signal(cm, "cursorActivity", cm); - if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i](); - } - - // Wraps a function in an operation. Returns the wrapped function. - function operation(cm1, f) { - return function() { - var cm = cm1 || this, withOp = !cm.curOp; - if (withOp) startOperation(cm); - try { var result = f.apply(cm, arguments); } - finally { if (withOp) endOperation(cm); } - return result; - }; - } - function docOperation(f) { - return function() { - var withOp = this.cm && !this.cm.curOp, result; - if (withOp) startOperation(this.cm); - try { result = f.apply(this, arguments); } - finally { if (withOp) endOperation(this.cm); } - return result; - }; - } - function runInOp(cm, f) { - var withOp = !cm.curOp, result; - if (withOp) startOperation(cm); - try { result = f(); } - finally { if (withOp) endOperation(cm); } - return result; - } - - function regChange(cm, from, to, lendiff) { - if (from == null) from = cm.doc.first; - if (to == null) to = cm.doc.first + cm.doc.size; - cm.curOp.changes.push({from: from, to: to, diff: lendiff}); - } - - // INPUT HANDLING - - function slowPoll(cm) { - if (cm.display.pollingFast) return; - cm.display.poll.set(cm.options.pollInterval, function() { - readInput(cm); - if (cm.state.focused) slowPoll(cm); - }); - } - - function fastPoll(cm) { - var missed = false; - cm.display.pollingFast = true; - function p() { - var changed = readInput(cm); - if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);} - else {cm.display.pollingFast = false; slowPoll(cm);} - } - cm.display.poll.set(20, p); - } - - // prevInput is a hack to work with IME. If we reset the textarea - // on every change, that breaks IME. So we look for changes - // compared to the previous content instead. (Modern browsers have - // events that indicate IME taking place, but these are not widely - // supported or compatible enough yet to rely on.) - function readInput(cm) { - var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc, sel = doc.sel; - if (!cm.state.focused || hasSelection(input) || isReadOnly(cm) || cm.state.disableInput) return false; - if (cm.state.pasteIncoming && cm.state.fakedLastChar) { - input.value = input.value.substring(0, input.value.length - 1); - cm.state.fakedLastChar = false; - } - var text = input.value; - if (text == prevInput && posEq(sel.from, sel.to)) return false; - if (ie && !ie_lt9 && cm.display.inputHasSelection === text) { - resetInput(cm, true); - return false; - } - - var withOp = !cm.curOp; - if (withOp) startOperation(cm); - sel.shift = false; - var same = 0, l = Math.min(prevInput.length, text.length); - while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same; - var from = sel.from, to = sel.to; - if (same < prevInput.length) - from = Pos(from.line, from.ch - (prevInput.length - same)); - else if (cm.state.overwrite && posEq(from, to) && !cm.state.pasteIncoming) - to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + (text.length - same))); - - var updateInput = cm.curOp.updateInput; - var changeEvent = {from: from, to: to, text: splitLines(text.slice(same)), - origin: cm.state.pasteIncoming ? "paste" : "+input"}; - makeChange(cm.doc, changeEvent, "end"); - cm.curOp.updateInput = updateInput; - signalLater(cm, "inputRead", cm, changeEvent); - - if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = ""; - else cm.display.prevInput = text; - if (withOp) endOperation(cm); - cm.state.pasteIncoming = false; - return true; - } - - function resetInput(cm, user) { - var minimal, selected, doc = cm.doc; - if (!posEq(doc.sel.from, doc.sel.to)) { - cm.display.prevInput = ""; - minimal = hasCopyEvent && - (doc.sel.to.line - doc.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000); - var content = minimal ? "-" : selected || cm.getSelection(); - cm.display.input.value = content; - if (cm.state.focused) selectInput(cm.display.input); - if (ie && !ie_lt9) cm.display.inputHasSelection = content; - } else if (user) { - cm.display.prevInput = cm.display.input.value = ""; - if (ie && !ie_lt9) cm.display.inputHasSelection = null; - } - cm.display.inaccurateSelection = minimal; - } - - function focusInput(cm) { - if (cm.options.readOnly != "nocursor" && (!mobile || document.activeElement != cm.display.input)) - cm.display.input.focus(); - } - - function isReadOnly(cm) { - return cm.options.readOnly || cm.doc.cantEdit; - } - - // EVENT HANDLERS - - function registerEventHandlers(cm) { - var d = cm.display; - on(d.scroller, "mousedown", operation(cm, onMouseDown)); - if (ie) - on(d.scroller, "dblclick", operation(cm, function(e) { - if (signalDOMEvent(cm, e)) return; - var pos = posFromMouse(cm, e); - if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return; - e_preventDefault(e); - var word = findWordAt(getLine(cm.doc, pos.line).text, pos); - extendSelection(cm.doc, word.from, word.to); - })); - else - on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); }); - on(d.lineSpace, "selectstart", function(e) { - if (!eventInWidget(d, e)) e_preventDefault(e); - }); - // Gecko browsers fire contextmenu *after* opening the menu, at - // which point we can't mess with it anymore. Context menu is - // handled in onMouseDown for Gecko. - if (!captureMiddleClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);}); - - on(d.scroller, "scroll", function() { - if (d.scroller.clientHeight) { - setScrollTop(cm, d.scroller.scrollTop); - setScrollLeft(cm, d.scroller.scrollLeft, true); - signal(cm, "scroll", cm); - } - }); - on(d.scrollbarV, "scroll", function() { - if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop); - }); - on(d.scrollbarH, "scroll", function() { - if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft); - }); - - on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);}); - on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);}); - - function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); } - on(d.scrollbarH, "mousedown", reFocus); - on(d.scrollbarV, "mousedown", reFocus); - // Prevent wrapper from ever scrolling - on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }); - - var resizeTimer; - function onResize() { - if (resizeTimer == null) resizeTimer = setTimeout(function() { - resizeTimer = null; - // Might be a text scaling operation, clear size caches. - d.cachedCharWidth = d.cachedTextHeight = knownScrollbarWidth = null; - clearCaches(cm); - runInOp(cm, bind(regChange, cm)); - }, 100); - } - 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 (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; - if (e.keyCode == 16) cm.doc.sel.shift = false; - })); - on(d.input, "input", function() { - if (ie && !ie_lt9 && cm.display.inputHasSelection) cm.display.inputHasSelection = null; - 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 (signalDOMEvent(cm, e) || 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() { - // Workaround for webkit bug https://bugs.webkit.org/show_bug.cgi?id=90206 - // Add a char to the end of textarea before paste occur so that - // selection doesn't span to the end of textarea. - if (webkit && !cm.state.fakedLastChar && !(new Date - cm.state.lastMiddleDown < 200)) { - var start = d.input.selectionStart, end = d.input.selectionEnd; - d.input.value += "$"; - d.input.selectionStart = start; - d.input.selectionEnd = end; - cm.state.fakedLastChar = true; - } - 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 || n.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true; - } - } - - function posFromMouse(cm, e, liberal) { - var display = cm.display; - if (!liberal) { - var target = e_target(e); - if (target == display.scrollbarH || target == display.scrollbarH.firstChild || - target == display.scrollbarV || target == display.scrollbarV.firstChild || - target == display.scrollbarFiller || target == display.gutterFiller) return null; - } - var x, y, space = getRect(display.lineSpace); - // Fails unpredictably on IE[67] when mouse is dragged around quickly. - try { x = e.clientX; y = e.clientY; } catch (e) { return null; } - return coordsChar(cm, x - space.left, y - space.top); - } - - var lastClick, lastDoubleClick; - function onMouseDown(e) { - if (signalDOMEvent(this, e)) return; - 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 (webkit) cm.state.lastMiddleDown = +new Date; - if (start) extendSelection(cm.doc, start); - setTimeout(bind(focusInput, cm), 20); - e_preventDefault(e); - return; - } - // For button 1, if it was clicked inside the editor - // (posFromMouse returning non-null), we have to adjust the - // selection. - if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;} - - if (!cm.state.focused) onFocus(cm); - - var now = +new Date, type = "single"; - if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) { - type = "triple"; - e_preventDefault(e); - setTimeout(bind(focusInput, cm), 20); - selectLine(cm, start.line); - } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) { - type = "double"; - lastDoubleClick = {time: now, pos: start}; - e_preventDefault(e); - var word = findWordAt(getLine(doc, start.line).text, start); - extendSelection(cm.doc, word.from, word.to); - } else { lastClick = {time: now, pos: start}; } - - var last = start; - if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) && - !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") { - var dragEnd = operation(cm, function(e2) { - if (webkit) display.scroller.draggable = false; - cm.state.draggingText = false; - off(document, "mouseup", dragEnd); - off(display.scroller, "drop", dragEnd); - if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) { - e_preventDefault(e2); - extendSelection(cm.doc, start); - focusInput(cm); - } - }); - // Let the drag handler handle this. - if (webkit) display.scroller.draggable = true; - cm.state.draggingText = dragEnd; - // IE's approach to draggable - if (display.scroller.dragDrop) display.scroller.dragDrop(); - on(document, "mouseup", dragEnd); - on(display.scroller, "drop", dragEnd); - return; - } - e_preventDefault(e); - if (type == "single") extendSelection(cm.doc, clipPos(doc, start)); - - var startstart = sel.from, startend = sel.to, lastPos = start; - - function doSelect(cur) { - if (posEq(lastPos, cur)) return; - lastPos = cur; - - if (type == "single") { - extendSelection(cm.doc, clipPos(doc, start), cur); - return; - } - - startstart = clipPos(doc, startstart); - startend = clipPos(doc, startend); - if (type == "double") { - var word = findWordAt(getLine(doc, cur.line).text, cur); - if (posLess(cur, startstart)) extendSelection(cm.doc, word.from, startend); - else extendSelection(cm.doc, startstart, word.to); - } else if (type == "triple") { - if (posLess(cur, startstart)) extendSelection(cm.doc, startend, clipPos(doc, Pos(cur.line, 0))); - else extendSelection(cm.doc, startstart, clipPos(doc, Pos(cur.line + 1, 0))); - } - } - - var editorSize = getRect(display.wrapper); - // Used to ensure timeout re-tries don't fire when another extend - // happened in the meantime (clearTimeout isn't reliable -- at - // least on Chrome, the timeouts still happen even when cleared, - // if the clear happens after their scheduled firing time). - var counter = 0; - - function extend(e) { - var curCount = ++counter; - var cur = posFromMouse(cm, e, true); - if (!cur) return; - if (!posEq(cur, last)) { - if (!cm.state.focused) onFocus(cm); - last = cur; - doSelect(cur); - var visible = visibleLines(display, doc); - if (cur.line >= visible.to || cur.line < visible.from) - setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150); - } else { - var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0; - if (outside) setTimeout(operation(cm, function() { - if (counter != curCount) return; - display.scroller.scrollTop += outside; - extend(e); - }), 50); - } - } - - function done(e) { - counter = Infinity; - 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 gutterEvent(cm, e, type, prevent, signalfn) { - try { var mX = e.clientX, mY = e.clientY; } - catch(e) { return false; } - if (mX >= Math.floor(getRect(cm.display.gutters).right)) return false; - if (prevent) e_preventDefault(e); - - var display = cm.display; - var lineBox = getRect(display.lineDiv); - - if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e); - mY -= lineBox.top - display.viewOffset; - - for (var i = 0; i < cm.options.gutters.length; ++i) { - var g = display.gutters.childNodes[i]; - if (g && getRect(g).right >= mX) { - var line = lineAtHeight(cm.doc, mY); - var gutter = cm.options.gutters[i]; - signalfn(cm, type, cm, line, gutter, e); - return e_defaultPrevented(e); - } - } - } - - function contextMenuInGutter(cm, e) { - if (!hasHandler(cm, "gutterContextMenu")) return false; - return gutterEvent(cm, e, "gutterContextMenu", false, signal); - } - - function clickInGutter(cm, e) { - return gutterEvent(cm, e, "gutterClick", true, signalLater); - } - - // Kludge to work around strange IE behavior where it'll sometimes - // re-fire a series of drag-related events right after the drop (#1551) - var lastDrop = 0; - - function onDrop(e) { - var cm = this; - if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e) || (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e)))) - return; - e_preventDefault(e); - if (ie) lastDrop = +new Date; - var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; - if (!pos || isReadOnly(cm)) return; - if (files && files.length && window.FileReader && window.File) { - var n = files.length, text = Array(n), read = 0; - var loadFile = function(file, i) { - var reader = new FileReader; - reader.onload = function() { - text[i] = reader.result; - if (++read == n) { - pos = clipPos(cm.doc, pos); - makeChange(cm.doc, {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}, "around"); - } - }; - reader.readAsText(file); - }; - for (var i = 0; i < n; ++i) loadFile(files[i], i); - } else { - // Don't do a replace if the drop happened inside of the selected text. - if (cm.state.draggingText && !(posLess(pos, cm.doc.sel.from) || posLess(cm.doc.sel.to, pos))) { - cm.state.draggingText(e); - // Ensure the editor is re-focused - setTimeout(bind(focusInput, cm), 20); - return; - } - try { - var text = e.dataTransfer.getData("Text"); - if (text) { - var curFrom = cm.doc.sel.from, curTo = cm.doc.sel.to; - setSelection(cm.doc, pos, pos); - if (cm.state.draggingText) replaceRange(cm.doc, "", curFrom, curTo, "paste"); - cm.replaceSelection(text, null, "paste"); - focusInput(cm); - } - } - catch(e){} - } - } - - function onDragStart(cm, e) { - if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; } - if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return; - - 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;"); - img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="; - 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, []); - startWorker(cm, 100); - } - function setScrollLeft(cm, val, isScroller) { - if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return; - val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth); - cm.doc.scrollLeft = val; - alignHorizontally(cm); - if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val; - if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val; - } - - // Since the delta values reported on mouse wheel events are - // unstandardized between browsers and even browser versions, and - // generally horribly unpredictable, this code starts by measuring - // the scroll effect that the first few mouse wheel events have, - // and, from that, detects the way it can convert deltas to pixel - // offsets afterwards. - // - // The reason we want to know the amount a wheel event will scroll - // is that it gives us a chance to update the display before the - // actual scrolling happens, reducing flickering. - - var wheelSamples = 0, wheelPixelsPerUnit = null; - // Fill in a browser-detected starting value on browsers where we - // know one. These don't have to be accurate -- the result of them - // being wrong would just be a slight flicker on the first wheel - // scroll (if it is large enough). - if (ie) wheelPixelsPerUnit = -.53; - else if (gecko) wheelPixelsPerUnit = 15; - else if (chrome) wheelPixelsPerUnit = -.7; - else if (safari) wheelPixelsPerUnit = -1/3; - - function onScrollWheel(cm, e) { - var dx = e.wheelDeltaX, dy = e.wheelDeltaY; - if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail; - if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail; - else if (dy == null) dy = e.wheelDelta; - - var display = cm.display, scroll = display.scroller; - // Quit if there's nothing to scroll here - if (!(dx && scroll.scrollWidth > scroll.clientWidth || - dy && scroll.scrollHeight > scroll.clientHeight)) return; - - // Webkit browsers on OS X abort momentum scrolls when the target - // of the scroll event is removed from the scrollable element. - // This hack (see related code in patchDisplay) makes sure the - // element is kept around. - if (dy && mac && webkit) { - for (var cur = e.target; cur != scroll; cur = cur.parentNode) { - if (cur.lineObj) { - cm.display.currentWheelTarget = cur; - break; - } - } - } - - // On some browsers, horizontal scrolling will cause redraws to - // happen before the gutter has been realigned, causing it to - // wriggle around in a most unseemly way. When we have an - // estimated pixels/delta value, we just handle horizontal - // scrolling entirely here. It'll be slightly off from native, but - // better than glitching out. - if (dx && !gecko && !opera && wheelPixelsPerUnit != null) { - if (dy) - setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))); - setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth))); - e_preventDefault(e); - display.wheelStartX = null; // Abort measurement, if in progress - return; - } - - if (dy && wheelPixelsPerUnit != null) { - var pixels = dy * wheelPixelsPerUnit; - var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight; - if (pixels < 0) top = Math.max(0, top + pixels - 50); - else bot = Math.min(cm.doc.height, bot + pixels + 50); - updateDisplay(cm, [], {top: top, bottom: bot}); - } - - if (wheelSamples < 20) { - if (display.wheelStartX == null) { - display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop; - display.wheelDX = dx; display.wheelDY = dy; - setTimeout(function() { - if (display.wheelStartX == null) return; - var movedX = scroll.scrollLeft - display.wheelStartX; - var movedY = scroll.scrollTop - display.wheelStartY; - var sample = (movedY && display.wheelDY && movedY / display.wheelDY) || - (movedX && display.wheelDX && movedX / display.wheelDX); - display.wheelStartX = display.wheelStartY = null; - if (!sample) return; - wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1); - ++wheelSamples; - }, 200); - } else { - display.wheelDX += dx; display.wheelDY += dy; - } - } - } - - function doHandleBinding(cm, bound, dropShift) { - if (typeof bound == "string") { - bound = commands[bound]; - if (!bound) return false; - } - // Ensure previous input has been read, so that the handler sees a - // consistent view of the document - if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false; - var doc = cm.doc, prevShift = doc.sel.shift, done = false; - try { - if (isReadOnly(cm)) cm.state.suppressEdits = true; - if (dropShift) doc.sel.shift = false; - done = bound(cm) != Pass; - } finally { - doc.sel.shift = prevShift; - cm.state.suppressEdits = false; - } - return done; - } - - function allKeyMaps(cm) { - var maps = cm.state.keyMaps.slice(0); - if (cm.options.extraKeys) maps.push(cm.options.extraKeys); - maps.push(cm.options.keyMap); - return maps; - } - - var maybeTransition; - function handleKeyBinding(cm, e) { - // Handle auto keymap transitions - var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto; - clearTimeout(maybeTransition); - if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() { - if (getKeyMap(cm.options.keyMap) == startMap) { - cm.options.keyMap = (next.call ? next.call(null, cm) : next); - keyMapChanged(cm); - } - }, 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) : b.motion) - return doHandleBinding(cm, b); - }); - } else { - handled = lookupKey(name, keymaps, function(b) { return doHandleBinding(cm, b); }); - } - - if (handled) { - e_preventDefault(e); - restartBlink(cm); - if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; } - signalLater(cm, "keyHandled", cm, name, e); - } - 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); - signalLater(cm, "keyHandled", cm, "'" + ch + "'", e); - } - return handled; - } - - var lastStoppedKey = null; - function onKeyDown(e) { - var cm = this; - if (!cm.state.focused) onFocus(cm); - if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; - if (ie && e.keyCode == 27) e.returnValue = false; - 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 (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; - var keyCode = e.keyCode, charCode = e.charCode; - if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;} - if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return; - var ch = String.fromCharCode(charCode == null ? keyCode : charCode); - if (this.options.electricChars && this.doc.mode.electricChars && - this.options.smartIndent && !isReadOnly(this) && - this.doc.mode.electricChars.indexOf(ch) > -1) - setTimeout(operation(cm, function() {indentLine(cm, cm.doc.sel.to.line, "smart");}), 75); - if (handleCharBinding(cm, e, ch)) return; - if (ie && !ie_lt9) cm.display.inputHasSelection = null; - fastPoll(cm); - } - - function onFocus(cm) { - if (cm.options.readOnly == "nocursor") return; - if (!cm.state.focused) { - signal(cm, "focus", cm); - cm.state.focused = true; - if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1) - cm.display.wrapper.className += " CodeMirror-focused"; - if (!cm.curOp) { - resetInput(cm, true); - if (webkit) setTimeout(bind(resetInput, cm, true), 0); // Issue #1730 - } - } - 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) { - if (signalDOMEvent(cm, e, "contextmenu")) return; - var display = cm.display, sel = cm.doc.sel; - if (eventInWidget(display, e) || contextMenuInGutter(cm, e)) return; - - var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; - if (!pos || opera) return; // Opera is difficult. - - // Reset the current text selection only if the click is done outside of the selection - // and 'resetSelectionOnContextMenu' option is true. - var reset = cm.options.resetSelectionOnContextMenu; - if (reset && (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))) - operation(cm, setSelection)(cm.doc, pos, pos); - - var oldCSS = display.input.style.cssText; - display.inputDiv.style.position = "absolute"; - display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) + - "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; outline: none;" + - "border-width: 0; outline: none; overflow: hidden; opacity: .05; -ms-opacity: .05; filter: alpha(opacity=5);"; - focusInput(cm); - resetInput(cm, true); - // Adds "Select all" to context menu in FF - if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " "; - - function prepareSelectAllHack() { - if (display.input.selectionStart != null) { - var extval = display.input.value = "\u200b" + (posEq(sel.from, sel.to) ? "" : display.input.value); - display.prevInput = "\u200b"; - display.input.selectionStart = 1; display.input.selectionEnd = extval.length; - } - } - function rehide() { - display.inputDiv.style.position = "relative"; - display.input.style.cssText = oldCSS; - if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos; - slowPoll(cm); - - // Try to detect the user choosing select-all - if (display.input.selectionStart != null) { - if (!ie || ie_lt9) prepareSelectAllHack(); - clearTimeout(detectingSelectAll); - var i = 0, poll = function(){ - if (display.prevInput == " " && display.input.selectionStart == 0) - operation(cm, commands.selectAll)(cm); - else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500); - else resetInput(cm); - }; - detectingSelectAll = setTimeout(poll, 200); - } - } - - if (ie && !ie_lt9) prepareSelectAllHack(); - if (captureMiddleClick) { - e_stop(e); - var mouseup = function() { - off(window, "mouseup", mouseup); - setTimeout(rehide, 20); - }; - on(window, "mouseup", mouseup); - } else { - setTimeout(rehide, 50); - } - } - - // UPDATING - - var changeEnd = CodeMirror.changeEnd = function(change) { - if (!change.text) return change.to; - return Pos(change.from.line + change.text.length - 1, - lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)); - }; - - // Make sure a position will be valid after the given change. - function clipPostChange(doc, change, pos) { - if (!posLess(change.from, pos)) return clipPos(doc, pos); - var diff = (change.text.length - 1) - (change.to.line - change.from.line); - if (pos.line > change.to.line + diff) { - var preLine = pos.line - diff, lastLine = doc.first + doc.size - 1; - if (preLine > lastLine) return Pos(lastLine, getLine(doc, lastLine).text.length); - return clipToLen(pos, getLine(doc, preLine).text.length); - } - if (pos.line == change.to.line + diff) - return clipToLen(pos, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0) + - getLine(doc, change.to.line).text.length - change.to.ch); - var inside = pos.line - change.from.line; - return clipToLen(pos, change.text[inside].length + (inside ? 0 : change.from.ch)); - } - - // Hint can be null|"end"|"start"|"around"|{anchor,head} - function computeSelAfterChange(doc, change, hint) { - if (hint && typeof hint == "object") // Assumed to be {anchor, head} object - return {anchor: clipPostChange(doc, change, hint.anchor), - head: clipPostChange(doc, change, hint.head)}; - - if (hint == "start") return {anchor: change.from, head: change.from}; - - var end = changeEnd(change); - if (hint == "around") return {anchor: change.from, head: end}; - if (hint == "end") return {anchor: end, head: end}; - - // hint is null, leave the selection alone as much as possible - var adjustPos = function(pos) { - if (posLess(pos, change.from)) return pos; - if (!posLess(change.to, pos)) return end; - - var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch; - if (pos.line == change.to.line) ch += end.ch - change.to.ch; - return Pos(line, ch); - }; - return {anchor: adjustPos(doc.sel.anchor), head: adjustPos(doc.sel.head)}; - } - - function filterChange(doc, change, update) { - var obj = { - canceled: false, - from: change.from, - to: change.to, - text: change.text, - origin: change.origin, - cancel: function() { this.canceled = true; } - }; - if (update) obj.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; - }; - 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, true); - if (!change) return; - } - - // Possibly split or suppress the update based on the presence - // of read-only spans in its range. - var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to); - if (split) { - for (var i = split.length - 1; i >= 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) { - if (change.text.length == 1 && change.text[0] == "" && posEq(change.from, change.to)) return; - var selAfter = computeSelAfterChange(doc, change, selUpdate); - addToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN); - - makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)); - var rebased = []; - - linkedDocs(doc, function(doc, sharedHist) { - if (!sharedHist && indexOf(rebased, doc.history) == -1) { - rebaseHist(doc.history, change); - rebased.push(doc.history); - } - makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)); - }); - } - - function makeChangeFromHistory(doc, type) { - if (doc.cm && doc.cm.state.suppressEdits) return; - - var hist = doc.history; - var event = (type == "undo" ? hist.done : hist.undone).pop(); - if (!event) return; - - var anti = {changes: [], anchorBefore: event.anchorAfter, headBefore: event.headAfter, - anchorAfter: event.anchorBefore, headAfter: event.headBefore, - generation: hist.generation}; - (type == "undo" ? hist.undone : hist.done).push(anti); - hist.generation = event.generation || ++hist.maxGeneration; - - var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange"); - - for (var i = event.changes.length - 1; i >= 0; --i) { - var change = event.changes[i]; - change.origin = type; - if (filter && !filterChange(doc, change, false)) { - (type == "undo" ? hist.done : hist.undone).length = 0; - return; - } - - anti.changes.push(historyChangeFromChange(doc, change)); - - var after = i ? computeSelAfterChange(doc, change, null) - : {anchor: event.anchorBefore, head: event.headBefore}; - makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)); - var rebased = []; - - linkedDocs(doc, function(doc, sharedHist) { - if (!sharedHist && indexOf(rebased, doc.history) == -1) { - rebaseHist(doc.history, change); - rebased.push(doc.history); - } - makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)); - }); - } - } - - function shiftDoc(doc, distance) { - function shiftPos(pos) {return Pos(pos.line + distance, pos.ch);} - doc.first += distance; - if (doc.cm) regChange(doc.cm, doc.first, doc.first, distance); - doc.sel.head = shiftPos(doc.sel.head); doc.sel.anchor = shiftPos(doc.sel.anchor); - doc.sel.from = shiftPos(doc.sel.from); doc.sel.to = shiftPos(doc.sel.to); - } - - function makeChangeSingleDoc(doc, change, selAfter, spans) { - if (doc.cm && !doc.cm.curOp) - return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans); - - if (change.to.line < doc.first) { - shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)); - return; - } - if (change.from.line > doc.lastLine()) return; - - // Clip the change to the size of this doc - if (change.from.line < doc.first) { - var shift = change.text.length - 1 - (doc.first - change.from.line); - shiftDoc(doc, shift); - change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), - text: [lst(change.text)], origin: change.origin}; - } - var last = doc.lastLine(); - if (change.to.line > last) { - change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), - text: [change.text[0]], origin: change.origin}; - } - - change.removed = getBetween(doc, change.from, change.to); - - if (!selAfter) selAfter = computeSelAfterChange(doc, change, null); - if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans, selAfter); - else updateDoc(doc, change, spans, selAfter); - } - - function makeChangeSingleDocInEditor(cm, change, spans, selAfter) { - var doc = cm.doc, display = cm.display, from = change.from, to = change.to; - - var recomputeMaxLength = false, checkWidthStart = from.line; - if (!cm.options.lineWrapping) { - checkWidthStart = lineNo(visualLine(doc, getLine(doc, from.line))); - doc.iter(checkWidthStart, to.line + 1, function(line) { - if (line == display.maxLine) { - recomputeMaxLength = true; - return true; - } - }); - } - - if (!posLess(doc.sel.head, change.from) && !posLess(change.to, doc.sel.head)) - cm.curOp.cursorActivity = true; - - updateDoc(doc, change, spans, selAfter, estimateHeight(cm)); - - if (!cm.options.lineWrapping) { - doc.iter(checkWidthStart, from.line + change.text.length, function(line) { - var len = lineLength(doc, line); - if (len > display.maxLineLength) { - display.maxLine = line; - display.maxLineLength = len; - display.maxLineChanged = true; - recomputeMaxLength = false; - } - }); - if (recomputeMaxLength) cm.curOp.updateMaxLine = true; - } - - // Adjust frontier, schedule worker - doc.frontier = Math.min(doc.frontier, from.line); - startWorker(cm, 400); - - var lendiff = change.text.length - (to.line - from.line) - 1; - // Remember that these lines changed, for updating the display - regChange(cm, from.line, to.line + 1, lendiff); - - if (hasHandler(cm, "change")) { - var changeObj = {from: from, to: to, - text: change.text, - removed: change.removed, - origin: change.origin}; - if (cm.curOp.textChanged) { - for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {} - cur.next = changeObj; - } else cm.curOp.textChanged = changeObj; - } - } - - function replaceRange(doc, code, from, to, origin) { - if (!to) to = from; - if (posLess(to, from)) { var tmp = to; to = from; from = tmp; } - if (typeof code == "string") code = splitLines(code); - makeChange(doc, {from: from, to: to, text: code, origin: origin}, null); - } - - // POSITION OBJECT - - function Pos(line, ch) { - if (!(this instanceof Pos)) return new Pos(line, ch); - this.line = line; this.ch = ch; - } - CodeMirror.Pos = Pos; - - function posEq(a, b) {return a.line == b.line && a.ch == b.ch;} - function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);} - function copyPos(x) {return Pos(x.line, x.ch);} - - // SELECTION - - function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));} - function clipPos(doc, pos) { - if (pos.line < doc.first) return Pos(doc.first, 0); - var last = doc.first + doc.size - 1; - if (pos.line > last) return Pos(last, getLine(doc, last).text.length); - return clipToLen(pos, getLine(doc, pos.line).text.length); - } - function clipToLen(pos, linelen) { - var ch = pos.ch; - if (ch == null || ch > linelen) return Pos(pos.line, linelen); - else if (ch < 0) return Pos(pos.line, 0); - else return pos; - } - function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;} - - // If shift is held, this will move the selection anchor. Otherwise, - // it'll set the whole selection. - function extendSelection(doc, pos, other, bias) { - if (doc.sel.shift || doc.sel.extend) { - var anchor = doc.sel.anchor; - if (other) { - var posBefore = posLess(pos, anchor); - if (posBefore != posLess(other, anchor)) { - anchor = pos; - pos = other; - } else if (posBefore != posLess(pos, other)) { - pos = other; - } - } - setSelection(doc, anchor, pos, bias); - } else { - setSelection(doc, pos, other || pos, bias); - } - if (doc.cm) doc.cm.curOp.userSelChange = true; - } - - function filterSelectionChange(doc, anchor, head) { - var obj = {anchor: anchor, head: head}; - signal(doc, "beforeSelectionChange", doc, obj); - if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj); - obj.anchor = clipPos(doc, obj.anchor); obj.head = clipPos(doc, obj.head); - return obj; - } - - // Update the selection. Last two args are only used by - // updateDoc, since they have to be expressed in the line - // numbers before the update. - function setSelection(doc, anchor, head, bias, checkAtomic) { - if (!checkAtomic && hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) { - var filtered = filterSelectionChange(doc, anchor, head); - head = filtered.head; - anchor = filtered.anchor; - } - - var sel = doc.sel; - sel.goalColumn = null; - if (bias == null) bias = posLess(head, sel.head) ? -1 : 1; - // Skip over atomic spans. - if (checkAtomic || !posEq(anchor, sel.anchor)) - anchor = skipAtomic(doc, anchor, bias, checkAtomic != "push"); - if (checkAtomic || !posEq(head, sel.head)) - head = skipAtomic(doc, head, bias, checkAtomic != "push"); - - if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return; - - sel.anchor = anchor; sel.head = head; - var inv = posLess(head, anchor); - sel.from = inv ? head : anchor; - sel.to = inv ? anchor : head; - - if (doc.cm) - doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = - doc.cm.curOp.cursorActivity = true; - - signalLater(doc, "cursorActivity", doc); - } - - function reCheckSelection(cm) { - setSelection(cm.doc, cm.doc.sel.from, cm.doc.sel.to, null, "push"); - } - - function skipAtomic(doc, pos, bias, mayClear) { - var flipped = false, curPos = pos; - var dir = bias || 1; - doc.cantEdit = false; - search: for (;;) { - var line = getLine(doc, curPos.line); - if (line.markedSpans) { - for (var i = 0; i < line.markedSpans.length; ++i) { - var sp = line.markedSpans[i], m = sp.marker; - if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) && - (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) { - if (mayClear) { - signal(m, "beforeCursorEnter"); - if (m.explicitlyCleared) { - if (!line.markedSpans) break; - else {--i; continue;} - } - } - if (!m.atomic) continue; - var newPos = m.find()[dir < 0 ? "from" : "to"]; - if (posEq(newPos, curPos)) { - newPos.ch += dir; - if (newPos.ch < 0) { - if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1)); - else newPos = null; - } else if (newPos.ch > line.text.length) { - if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0); - else newPos = null; - } - if (!newPos) { - if (flipped) { - // Driven in a corner -- no valid cursor position found at all - // -- try again *with* clearing, if we didn't already - if (!mayClear) return skipAtomic(doc, pos, bias, true); - // Otherwise, turn off editing until further notice, and return the start of the doc - doc.cantEdit = true; - return Pos(doc.first, 0); - } - flipped = true; newPos = pos; dir = -dir; - } - } - curPos = newPos; - continue search; - } - } - } - return curPos; - } - } - - // SCROLLING - - function scrollCursorIntoView(cm) { - var coords = scrollPosIntoView(cm, cm.doc.sel.head, null, cm.options.cursorScrollMargin); - 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, end, margin) { - if (margin == null) margin = 0; - for (;;) { - var changed = false, coords = cursorCoords(cm, pos); - var endCoords = !end || end == pos ? coords : cursorCoords(cm, end); - var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left), - Math.min(coords.top, endCoords.top) - margin, - Math.max(coords.left, endCoords.left), - Math.max(coords.bottom, endCoords.bottom) + margin); - var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft; - if (scrollPos.scrollTop != null) { - setScrollTop(cm, scrollPos.scrollTop); - if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true; - } - if (scrollPos.scrollLeft != null) { - setScrollLeft(cm, scrollPos.scrollLeft); - if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true; - } - if (!changed) return coords; - } - } - - function scrollIntoView(cm, x1, y1, x2, y2) { - var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2); - if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop); - if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft); - } - - function calculateScrollPos(cm, x1, y1, x2, y2) { - var display = cm.display, snapMargin = textHeight(cm.display); - if (y1 < 0) y1 = 0; - var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {}; - var docBottom = cm.doc.height + paddingVert(display); - var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin; - if (y1 < screentop) { - result.scrollTop = atTop ? 0 : y1; - } else if (y2 > screentop + screen) { - var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen); - if (newTop != screentop) result.scrollTop = newTop; - } - - var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft; - x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth; - var gutterw = display.gutters.offsetWidth; - var atLeft = x1 < gutterw + 10; - if (x1 < screenleft + gutterw || atLeft) { - if (atLeft) x1 = 0; - result.scrollLeft = Math.max(0, x1 - 10 - gutterw); - } else if (x2 > screenw + screenleft - 3) { - result.scrollLeft = x2 + 10 - screenw; - } - return result; - } - - function updateScrollPos(cm, left, top) { - cm.curOp.updateScrollPos = {scrollLeft: left == null ? cm.doc.scrollLeft : left, - scrollTop: top == null ? cm.doc.scrollTop : top}; - } - - function addToScrollPos(cm, left, top) { - var pos = cm.curOp.updateScrollPos || (cm.curOp.updateScrollPos = {scrollLeft: cm.doc.scrollLeft, scrollTop: cm.doc.scrollTop}); - var scroll = cm.display.scroller; - pos.scrollTop = Math.max(0, Math.min(scroll.scrollHeight - scroll.clientHeight, pos.scrollTop + top)); - pos.scrollLeft = Math.max(0, Math.min(scroll.scrollWidth - scroll.clientWidth, pos.scrollLeft + left)); - } - - // API UTILITIES - - function indentLine(cm, n, how, aggressive) { - var doc = cm.doc; - if (how == null) 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; - } else if (typeof how == "number") { - indentation = curSpace + how; - } - indentation = Math.max(0, indentation); - - var indentString = "", pos = 0; - if (cm.options.indentWithTabs) - for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} - if (pos < indentation) indentString += spaceStr(indentation - pos); - - if (indentString != curSpaceString) - replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); - else if (doc.sel.head.line == n && doc.sel.head.ch < curSpaceString.length) - setSelection(doc, Pos(n, curSpaceString.length), Pos(n, curSpaceString.length), 1); - line.stateAfter = null; - } - - function changeLine(cm, handle, op) { - var no = handle, line = handle, doc = cm.doc; - if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle)); - else no = lineNo(handle); - if (no == null) return null; - if (op(line, no)) regChange(cm, no, no + 1); - else return null; - return line; - } - - function findPosH(doc, pos, dir, unit, visually) { - var line = pos.line, ch = pos.ch, origDir = dir; - var lineObj = getLine(doc, line); - var possible = true; - function findNextLine() { - var l = line + dir; - if (l < doc.first || l >= doc.first + doc.size) return (possible = false); - line = l; - return lineObj = getLine(doc, l); - } - function moveOnce(boundToLine) { - var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true); - if (next == null) { - if (!boundToLine && findNextLine()) { - if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj); - else ch = dir < 0 ? lineObj.text.length : 0; - } else return (possible = false); - } else ch = next; - return true; - } - - if (unit == "char") moveOnce(); - else if (unit == "column") moveOnce(true); - else if (unit == "word" || unit == "group") { - var sawType = null, group = unit == "group"; - for (var first = true;; first = false) { - if (dir < 0 && !moveOnce(!first)) break; - var cur = lineObj.text.charAt(ch) || "\n"; - var type = isWordChar(cur) ? "w" - : !group ? null - : /\s/.test(cur) ? null - : "p"; - if (sawType && sawType != type) { - if (dir < 0) {dir = 1; moveOnce();} - break; - } - if (type) sawType = type; - if (dir > 0 && !moveOnce(!first)) break; - } - } - var result = skipAtomic(doc, Pos(line, ch), origDir, true); - if (!possible) result.hitSide = true; - return result; - } - - function findPosV(cm, pos, dir, unit) { - var doc = cm.doc, x = pos.left, y; - if (unit == "page") { - var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); - y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display)); - } else if (unit == "line") { - y = dir > 0 ? pos.bottom + 3 : pos.top - 3; - } - for (;;) { - var target = coordsChar(cm, x, y); - if (!target.outside) break; - if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; } - y += dir * 5; - } - return target; - } - - function findWordAt(line, pos) { - var start = pos.ch, end = pos.ch; - if (line) { - if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end; - var startChar = line.charAt(start); - var check = isWordChar(startChar) ? isWordChar - : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} - : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);}; - while (start > 0 && check(line.charAt(start - 1))) --start; - while (end < line.length && check(line.charAt(end))) ++end; - } - return {from: Pos(pos.line, start), to: Pos(pos.line, end)}; - } - - function selectLine(cm, line) { - extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0))); - } - - // PROTOTYPE - - // The publicly visible API. Note that operation(null, f) means - // 'wrap f in an operation, performed on its `this` parameter' - - CodeMirror.prototype = { - constructor: CodeMirror, - focus: function(){window.focus(); focusInput(this); fastPoll(this);}, - - setOption: function(option, value) { - var options = this.options, old = options[option]; - if (options[option] == value && option != "mode") return; - options[option] = value; - if (optionHandlers.hasOwnProperty(option)) - operation(this, optionHandlers[option])(this, value, old); - }, - - getOption: function(option) {return this.options[option];}, - getDoc: function() {return this.doc;}, - - addKeyMap: function(map, bottom) { - this.state.keyMaps[bottom ? "push" : "unshift"](map); - }, - removeKeyMap: function(map) { - var maps = this.state.keyMaps; - for (var i = 0; i < maps.length; ++i) - if (maps[i] == map || (typeof maps[i] != "string" && maps[i].name == 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) { - var cur = overlays[i].modeSpec; - if (cur == spec || typeof spec == "string" && cur.name == spec) { - overlays.splice(i, 1); - this.state.modeGen++; - regChange(this); - return; - } - } - }), - - indentLine: operation(null, function(n, dir, aggressive) { - if (typeof dir != "string" && typeof dir != "number") { - if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"; - else dir = dir ? "add" : "subtract"; - } - if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive); - }), - indentSelection: 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, precise) { - var doc = this.doc; - pos = clipPos(doc, pos); - var state = getStateBefore(this, pos.line, precise), 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}; - }, - - getTokenTypeAt: function(pos) { - pos = clipPos(this.doc, pos); - var styles = getLineStyles(this, getLine(this.doc, pos.line)); - var before = 0, after = (styles.length - 1) / 2, ch = pos.ch; - if (ch == 0) return styles[2]; - for (;;) { - var mid = (before + after) >> 1; - if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid; - else if (styles[mid * 2 + 1] < ch) before = mid + 1; - else return styles[mid * 2 + 2]; - } - }, - - getModeAt: function(pos) { - var mode = this.doc.mode; - if (!mode.innerMode) return mode; - return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode; - }, - - getHelper: function(pos, type) { - if (!helpers.hasOwnProperty(type)) return; - var help = helpers[type], mode = this.getModeAt(pos); - return mode[type] && help[mode[type]] || - mode.helperType && help[mode.helperType] || - help[mode.name]; - }, - - getStateAfter: function(line, precise) { - var doc = this.doc; - line = clipLine(doc, line == null ? doc.first + doc.size - 1: line); - return getStateBefore(this, line + 1, precise); - }, - - cursorCoords: function(start, mode) { - var pos, sel = this.doc.sel; - if (start == null) pos = sel.head; - else if (typeof start == "object") pos = clipPos(this.doc, start); - else pos = start ? sel.from : sel.to; - return cursorCoords(this, pos, mode || "page"); - }, - - charCoords: function(pos, mode) { - return charCoords(this, clipPos(this.doc, pos), mode || "page"); - }, - - coordsChar: function(coords, mode) { - coords = fromCoordSystem(this, coords, mode || "page"); - return coordsChar(this, coords.left, coords.top); - }, - - lineAtHeight: function(height, mode) { - height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top; - return lineAtHeight(this.doc, height + this.display.viewOffset); - }, - heightAtLine: function(line, mode) { - var end = false, last = this.doc.first + this.doc.size - 1; - if (line < this.doc.first) line = this.doc.first; - else if (line > last) { line = last; end = true; } - var lineObj = getLine(this.doc, line); - return intoCoordSystem(this, getLine(this.doc, line), {top: 0, left: 0}, mode || "page").top + - (end ? lineObj.height : 0); - }, - - defaultTextHeight: function() { return textHeight(this.display); }, - defaultCharWidth: function() { return charWidth(this.display); }, - - setGutterMarker: operation(null, function(line, gutterID, value) { - return changeLine(this, line, function(line) { - var markers = line.gutterMarkers || (line.gutterMarkers = {}); - markers[gutterID] = value; - if (!value && isEmpty(markers)) line.gutterMarkers = null; - return true; - }); - }), - - clearGutter: operation(null, function(gutterID) { - var cm = this, doc = cm.doc, i = doc.first; - doc.iter(function(line) { - if (line.gutterMarkers && line.gutterMarkers[gutterID]) { - line.gutterMarkers[gutterID] = null; - regChange(cm, i, i + 1); - if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null; - } - ++i; - }); - }), - - addLineClass: operation(null, function(handle, where, cls) { - return changeLine(this, handle, function(line) { - var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; - if (!line[prop]) line[prop] = cls; - else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").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 found = cur.match(new RegExp("(?:^|\\s+)" + cls + "(?:$|\\s+)")); - if (!found) return false; - var end = found.index + found[0].length; - line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null; - } - return true; - }); - }), - - addLineWidget: 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 + "px"; - node.style.left = node.style.right = ""; - if (horiz == "right") { - left = display.sizer.clientWidth - node.offsetWidth; - node.style.right = "0px"; - } else { - if (horiz == "left") left = 0; - else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2; - node.style.left = left + "px"; - } - if (scroll) - scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight); - }, - - triggerOnKeyDown: operation(null, onKeyDown), - - execCommand: function(cmd) {return commands[cmd](this);}, - - findPosH: function(from, amount, unit, visually) { - var dir = 1; - if (amount < 0) { dir = -1; amount = -amount; } - for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { - cur = findPosH(this.doc, cur, dir, unit, visually); - if (cur.hitSide) break; - } - return cur; - }, - - moveH: operation(null, function(dir, unit) { - var sel = this.doc.sel, pos; - if (sel.shift || sel.extend || posEq(sel.from, sel.to)) - pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually); - else - pos = dir < 0 ? sel.from : sel.to; - extendSelection(this.doc, pos, pos, dir); - }), - - deleteH: operation(null, function(dir, unit) { - var sel = this.doc.sel; - if (!posEq(sel.from, sel.to)) replaceRange(this.doc, "", sel.from, sel.to, "+delete"); - else replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete"); - this.curOp.userSelChange = true; - }), - - findPosV: function(from, amount, unit, goalColumn) { - var dir = 1, x = goalColumn; - if (amount < 0) { dir = -1; amount = -amount; } - for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { - var coords = cursorCoords(this, cur, "div"); - if (x == null) x = coords.left; - else coords.left = x; - cur = findPosV(this, coords, dir, unit); - if (cur.hitSide) break; - } - return cur; - }, - - moveV: operation(null, function(dir, unit) { - var sel = this.doc.sel; - var pos = cursorCoords(this, sel.head, "div"); - if (sel.goalColumn != null) pos.left = sel.goalColumn; - var target = findPosV(this, pos, dir, unit); - - if (unit == "page") addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top); - extendSelection(this.doc, target, target, dir); - sel.goalColumn = pos.left; - }), - - toggleOverwrite: function(value) { - if (value != null && value == this.state.overwrite) return; - if (this.state.overwrite = !this.state.overwrite) - this.display.cursor.className += " CodeMirror-overwrite"; - else - this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", ""); - }, - hasFocus: function() { return this.state.focused; }, - - scrollTo: operation(null, function(x, y) { - updateScrollPos(this, x, y); - }), - getScrollInfo: function() { - var scroller = this.display.scroller, co = scrollerCutOff; - return {left: scroller.scrollLeft, top: scroller.scrollTop, - height: scroller.scrollHeight - co, width: scroller.scrollWidth - co, - clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co}; - }, - - scrollIntoView: operation(null, function(range, margin) { - if (range == null) range = {from: this.doc.sel.head, to: null}; - else if (typeof range == "number") range = {from: Pos(range, 0), to: null}; - else if (range.from == null) range = {from: range, to: null}; - if (!range.to) range.to = range.from; - if (!margin) margin = 0; - - var coords = range; - if (range.from.line != null) { - this.curOp.scrollToPos = {from: range.from, to: range.to, margin: margin}; - coords = {from: cursorCoords(this, range.from), - to: cursorCoords(this, range.to)}; - } - var sPos = calculateScrollPos(this, Math.min(coords.from.left, coords.to.left), - Math.min(coords.from.top, coords.to.top) - margin, - Math.max(coords.from.right, coords.to.right), - Math.max(coords.from.bottom, coords.to.bottom) + margin); - updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop); - }), - - setSize: operation(null, 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); - if (this.options.lineWrapping) - this.display.measureLineCache.length = this.display.measureLineCachePos = 0; - this.curOp.forceUpdate = true; - }), - - operation: function(f){return runInOp(this, f);}, - - refresh: operation(null, function() { - var badHeight = this.display.cachedTextHeight == null; - clearCaches(this); - updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop); - regChange(this); - if (badHeight) estimateLineHeights(this); - }), - - swapDoc: operation(null, function(doc) { - var old = this.doc; - old.cm = null; - attachDoc(this, doc); - clearCaches(this); - resetInput(this, true); - updateScrollPos(this, doc.scrollLeft, doc.scrollTop); - signalLater(this, "swapDoc", this, old); - 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;} - }; - eventMixin(CodeMirror); - - // 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("specialChars", /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\ufeff]/g, function(cm, val) { - cm.options.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g"); - cm.refresh(); - }, true); - option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true); - option("electricChars", true); - option("rtlMoveVisually", !windows); - option("wholeLineUpdateBefore", true); - - option("theme", "default", function(cm) { - themeChanged(cm); - guttersChanged(cm); - }, true); - option("keyMap", "default", keyMapChanged); - option("extraKeys", null); - - option("onKeyEvent", null); - option("onDragEvent", null); - - option("lineWrapping", false, wrappingChanged, true); - option("gutters", [], function(cm) { - setGuttersForLineNumbers(cm.options); - guttersChanged(cm); - }, true); - option("fixedGutter", true, function(cm, val) { - cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"; - cm.refresh(); - }, true); - option("coverGutterNextToScrollbar", false, updateScrollbars, true); - option("lineNumbers", false, function(cm) { - setGuttersForLineNumbers(cm.options); - guttersChanged(cm); - }, true); - option("firstLineNumber", 1, guttersChanged, true); - option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true); - option("showCursorWhenSelecting", false, updateSelection, true); - - option("resetSelectionOnContextMenu", true); - - option("readOnly", false, function(cm, val) { - if (val == "nocursor") { - onBlur(cm); - cm.display.input.blur(); - cm.display.disabled = true; - } else { - cm.display.disabled = false; - if (!val) resetInput(cm, true); - } - }); - option("dragDrop", true); - - option("cursorBlinkRate", 530); - option("cursorScrollMargin", 0); - option("cursorHeight", 1); - option("workTime", 100); - option("workDelay", 100); - option("flattenSpans", true); - option("pollInterval", 100); - option("undoDepth", 40, function(cm, val){cm.doc.history.undoDepth = val;}); - option("historyEventDelay", 500); - option("viewportMargin", 10, function(cm){cm.refresh();}, true); - option("maxHighlightLength", 10000, function(cm){loadMode(cm); cm.refresh();}, true); - option("crudeMeasuringFrom", 10000); - option("moveInputWithCursor", true, function(cm, val) { - if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0; - }); - - option("tabindex", null, function(cm, val) { - cm.display.input.tabIndex = val || ""; - }); - option("autofocus", null); - - // MODE DEFINITION AND QUERYING - - // Known modes, by name and by MIME - var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; - - CodeMirror.defineMode = function(name, mode) { - if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; - if (arguments.length > 2) { - mode.dependencies = []; - for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]); - } - modes[name] = mode; - }; - - CodeMirror.defineMIME = function(mime, spec) { - mimeModes[mime] = spec; - }; - - CodeMirror.resolveMode = function(spec) { - if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { - spec = mimeModes[spec]; - } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { - var found = mimeModes[spec.name]; - spec = createObj(found, spec); - spec.name = found.name; - } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { - return CodeMirror.resolveMode("application/xml"); - } - if (typeof spec == "string") return {name: spec}; - else return spec || {name: "null"}; - }; - - CodeMirror.getMode = function(options, spec) { - var 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/x-rsrc", "r"); - - var modeExtensions = CodeMirror.modeExtensions = {}; - CodeMirror.extendMode = function(mode, properties) { - var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); - copyObj(properties, exts); - }; - - // EXTENSIONS - - CodeMirror.defineExtension = function(name, func) { - CodeMirror.prototype[name] = func; - }; - CodeMirror.defineDocExtension = function(name, func) { - Doc.prototype[name] = func; - }; - CodeMirror.defineOption = option; - - var initHooks = []; - CodeMirror.defineInitHook = function(f) {initHooks.push(f);}; - - var helpers = CodeMirror.helpers = {}; - CodeMirror.registerHelper = function(type, name, value) { - if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {}; - helpers[type][name] = value; - }; - - // UTILITIES - - CodeMirror.isWordChar = isWordChar; - - // 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); - if (!info || info.mode == mode) break; - 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"); - }, - delLineLeft: function(cm) { - var cur = cm.getCursor(); - cm.replaceRange("", Pos(cur.line, 0), cur, "+delete"); - }, - undo: function(cm) {cm.undo();}, - redo: function(cm) {cm.redo();}, - goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));}, - goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));}, - goLineStart: function(cm) { - cm.extendSelection(lineStart(cm, cm.getCursor().line)); - }, - goLineStartSmart: function(cm) { - var cur = cm.getCursor(), start = lineStart(cm, cur.line); - var line = cm.getLineHandle(start.line); - var order = getOrder(line); - if (!order || order[0].level == 0) { - var firstNonWS = Math.max(0, line.text.search(/\S/)); - var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch; - cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS)); - } else cm.extendSelection(start); - }, - goLineEnd: function(cm) { - cm.extendSelection(lineEnd(cm, cm.getCursor().line)); - }, - goLineRight: function(cm) { - var top = cm.charCoords(cm.getCursor(), "div").top + 5; - cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")); - }, - goLineLeft: function(cm) { - var top = cm.charCoords(cm.getCursor(), "div").top + 5; - cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div")); - }, - goLineUp: function(cm) {cm.moveV(-1, "line");}, - goLineDown: function(cm) {cm.moveV(1, "line");}, - goPageUp: function(cm) {cm.moveV(-1, "page");}, - goPageDown: function(cm) {cm.moveV(1, "page");}, - goCharLeft: function(cm) {cm.moveH(-1, "char");}, - goCharRight: function(cm) {cm.moveH(1, "char");}, - goColumnLeft: function(cm) {cm.moveH(-1, "column");}, - goColumnRight: function(cm) {cm.moveH(1, "column");}, - goWordLeft: function(cm) {cm.moveH(-1, "word");}, - goGroupRight: function(cm) {cm.moveH(1, "group");}, - goGroupLeft: function(cm) {cm.moveH(-1, "group");}, - goWordRight: function(cm) {cm.moveH(1, "word");}, - delCharBefore: function(cm) {cm.deleteH(-1, "char");}, - delCharAfter: function(cm) {cm.deleteH(1, "char");}, - delWordBefore: function(cm) {cm.deleteH(-1, "word");}, - delWordAfter: function(cm) {cm.deleteH(1, "word");}, - delGroupBefore: function(cm) {cm.deleteH(-1, "group");}, - delGroupAfter: function(cm) {cm.deleteH(1, "group");}, - indentAuto: function(cm) {cm.indentSelection("smart");}, - indentMore: function(cm) {cm.indentSelection("add");}, - indentLess: function(cm) {cm.indentSelection("subtract");}, - insertTab: function(cm) {cm.replaceSelection("\t", "end", "+input");}, - defaultTab: function(cm) { - if (cm.somethingSelected()) cm.indentSelection("add"); - else cm.replaceSelection("\t", "end", "+input"); - }, - transposeChars: function(cm) { - var cur = cm.getCursor(), line = cm.getLine(cur.line); - if (cur.ch > 0 && cur.ch < line.length - 1) - cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1), - Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1)); - }, - newlineAndIndent: function(cm) { - operation(cm, function() { - cm.replaceSelection("\n", "end", "+input"); - cm.indentLine(cm.getCursor().line, null, true); - })(); - }, - toggleOverwrite: function(cm) {cm.toggleOverwrite();} - }; - - // STANDARD KEYMAPS - - var keyMap = CodeMirror.keyMap = {}; - keyMap.basic = { - "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", - "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", - "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore", - "Tab": "defaultTab", "Shift-Tab": "indentAuto", - "Enter": "newlineAndIndent", "Insert": "toggleOverwrite" - }; - // Note that the save and find-related commands aren't defined by - // default. Unknown commands are simply ignored. - keyMap.pcDefault = { - "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", - "Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd", - "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", - "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", - "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", - "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", - fallthrough: "basic" - }; - keyMap.macDefault = { - "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", - "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", - "Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delGroupBefore", - "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", - "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", - "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft", - 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 != "stop"; - } - } - function isModifierKey(event) { - var name = keyNames[event.keyCode]; - return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; - } - function keyName(event, noShift) { - if (opera && event.keyCode == 34 && event["char"]) return false; - var name = keyNames[event.keyCode]; - if (name == null || event.altGraphKey) return false; - if (event.altKey) name = "Alt-" + name; - if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name; - if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name; - if (!noShift && event.shiftKey) name = "Shift-" + name; - return name; - } - CodeMirror.lookupKey = lookupKey; - CodeMirror.isModifierKey = isModifierKey; - CodeMirror.keyName = keyName; - - // FROMTEXTAREA - - CodeMirror.fromTextArea = function(textarea, options) { - if (!options) options = {}; - options.value = textarea.value; - if (!options.tabindex && textarea.tabindex) - options.tabindex = textarea.tabindex; - if (!options.placeholder && textarea.placeholder) - options.placeholder = textarea.placeholder; - // Set autofocus to true if this textarea is focused, or if it has - // autofocus and no other element is focused. - if (options.autofocus == null) { - var hasFocus = document.body; - // doc.activeElement occasionally throws on IE - try { hasFocus = document.activeElement; } catch(e) {} - options.autofocus = hasFocus == textarea || - textarea.getAttribute("autofocus") != null && hasFocus == document.body; - } - - function save() {textarea.value = cm.getValue();} - if (textarea.form) { - on(textarea.form, "submit", save); - // Deplorable hack to make the submit method do the right thing. - if (!options.leaveSubmitMethodAlone) { - var form = textarea.form, realSubmit = form.submit; - try { - var wrappedSubmit = form.submit = function() { - save(); - form.submit = realSubmit; - form.submit(); - form.submit = wrappedSubmit; - }; - } catch(e) {} - } - } - - textarea.style.display = "none"; - var cm = CodeMirror(function(node) { - textarea.parentNode.insertBefore(node, textarea.nextSibling); - }, options); - cm.save = save; - cm.getTextArea = function() { return textarea; }; - cm.toTextArea = function() { - save(); - textarea.parentNode.removeChild(cm.getWrapperElement()); - textarea.style.display = ""; - if (textarea.form) { - off(textarea.form, "submit", save); - if (typeof textarea.form.submit == "function") - textarea.form.submit = realSubmit; - } - }; - return cm; - }; - - // STRING STREAM - - // Fed to the mode parsers, provides helper functions to make - // parsers more succinct. - - // The character stream used by a mode's parser. - function StringStream(string, tabSize) { - this.pos = this.start = 0; - this.string = string; - this.tabSize = tabSize || 8; - this.lastColumnPos = this.lastColumnValue = 0; - } - - StringStream.prototype = { - eol: function() {return this.pos >= this.string.length;}, - sol: function() {return this.pos == 0;}, - peek: function() {return this.string.charAt(this.pos) || undefined;}, - next: function() { - if (this.pos < this.string.length) - return this.string.charAt(this.pos++); - }, - eat: function(match) { - var ch = this.string.charAt(this.pos); - if (typeof match == "string") var ok = ch == match; - else var ok = ch && (match.test ? match.test(ch) : match(ch)); - if (ok) {++this.pos; return ch;} - }, - eatWhile: function(match) { - var start = this.pos; - while (this.eat(match)){} - return this.pos > start; - }, - eatSpace: function() { - var start = this.pos; - while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; - return this.pos > start; - }, - skipToEnd: function() {this.pos = this.string.length;}, - skipTo: function(ch) { - var found = this.string.indexOf(ch, this.pos); - if (found > -1) {this.pos = found; return true;} - }, - backUp: function(n) {this.pos -= n;}, - column: function() { - if (this.lastColumnPos < this.start) { - this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue); - this.lastColumnPos = this.start; - } - return this.lastColumnValue; - }, - indentation: function() {return countColumn(this.string, null, this.tabSize);}, - match: function(pattern, consume, caseInsensitive) { - if (typeof pattern == "string") { - var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;}; - var substr = this.string.substr(this.pos, pattern.length); - if (cased(substr) == cased(pattern)) { - if (consume !== false) this.pos += pattern.length; - return true; - } - } else { - var match = this.string.slice(this.pos).match(pattern); - if (match && match.index > 0) return null; - if (match && consume !== false) this.pos += match[0].length; - return match; - } - }, - current: function(){return this.string.slice(this.start, this.pos);} - }; - CodeMirror.StringStream = StringStream; - - // TEXTMARKERS - - function TextMarker(doc, type) { - this.lines = []; - this.type = type; - this.doc = doc; - } - CodeMirror.TextMarker = TextMarker; - eventMixin(TextMarker); - - TextMarker.prototype.clear = function() { - if (this.explicitlyCleared) return; - var cm = this.doc.cm, withOp = cm && !cm.curOp; - if (withOp) startOperation(cm); - if (hasHandler(this, "clear")) { - var found = this.find(); - if (found) signalLater(this, "clear", found.from, found.to); - } - var min = null, max = null; - for (var i = 0; i < this.lines.length; ++i) { - var line = this.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.atomic && this.doc.cantEdit) { - this.doc.cantEdit = false; - if (cm) reCheckSelection(cm); - } - if (withOp) endOperation(cm); - }; - - TextMarker.prototype.find = function() { - var from, to; - for (var i = 0; i < this.lines.length; ++i) { - var line = this.lines[i]; - var span = getMarkedSpanFor(line.markedSpans, this); - if (span.from != null || span.to != null) { - var found = lineNo(line); - if (span.from != null) from = Pos(found, span.from); - if (span.to != null) to = Pos(found, span.to); - } - } - if (this.type == "bookmark") return from; - return from && {from: from, to: to}; - }; - - TextMarker.prototype.changed = function() { - var pos = this.find(), cm = this.doc.cm; - if (!pos || !cm) return; - if (this.type != "bookmark") pos = pos.from; - var line = getLine(this.doc, pos.line); - clearCachedMeasurement(cm, line); - if (pos.line >= cm.display.showingFrom && pos.line < cm.display.showingTo) { - for (var node = cm.display.lineDiv.firstChild; node; node = node.nextSibling) if (node.lineObj == line) { - if (node.offsetHeight != line.height) updateLineHeight(line, node.offsetHeight); - break; - } - runInOp(cm, function() { - cm.curOp.selectionChanged = cm.curOp.forceUpdate = cm.curOp.updateMaxLine = true; - }); - } - }; - - TextMarker.prototype.attachLine = function(line) { - if (!this.lines.length && this.doc.cm) { - var op = this.doc.cm.curOp; - if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) - (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); - } - this.lines.push(line); - }; - TextMarker.prototype.detachLine = function(line) { - this.lines.splice(indexOf(this.lines, line), 1); - if (!this.lines.length && this.doc.cm) { - var op = this.doc.cm.curOp; - (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this); - } - }; - - function markText(doc, from, to, options, type) { - if (options && options.shared) return markTextShared(doc, from, to, options, type); - if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type); - - var marker = new TextMarker(doc, type); - if (posLess(to, from) || posEq(from, to) && type == "range" && - !(options.inclusiveLeft && options.inclusiveRight)) - return marker; - if (options) copyObj(options, marker); - if (marker.replacedWith) { - marker.collapsed = true; - marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget"); - if (!options.handleMouseEvents) marker.replacedWith.ignoreEvents = true; - } - if (marker.collapsed) sawCollapsedSpans = true; - - if (marker.addToHistory) - addToHistory(doc, {from: from, to: to, origin: "markText"}, - {head: doc.sel.head, anchor: doc.sel.anchor}, NaN); - - var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd, cm = doc.cm, updateMaxLine; - doc.iter(curLine, to.line + 1, function(line) { - if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(doc, line) == cm.display.maxLine) - updateMaxLine = true; - var span = {from: null, to: null, marker: marker}; - size += line.text.length; - if (curLine == from.line) {span.from = from.ch; size -= from.ch;} - if (curLine == to.line) {span.to = to.ch; size -= line.text.length - to.ch;} - if (marker.collapsed) { - if (curLine == to.line) collapsedAtEnd = collapsedSpanAt(line, to.ch); - if (curLine == from.line) collapsedAtStart = collapsedSpanAt(line, from.ch); - else updateLineHeight(line, 0); - } - addMarkedSpan(line, span); - ++curLine; - }); - if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) { - if (lineIsHidden(doc, line)) updateLineHeight(line, 0); - }); - - if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); }); - - if (marker.readOnly) { - sawReadOnlySpans = true; - if (doc.history.done.length || doc.history.undone.length) - doc.clearHistory(); - } - if (marker.collapsed) { - if (collapsedAtStart != collapsedAtEnd) - throw new Error("Inserting collapsed marker overlapping an existing one"); - marker.size = size; - marker.atomic = true; - } - if (cm) { - if (updateMaxLine) cm.curOp.updateMaxLine = true; - if (marker.className || marker.title || 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; - eventMixin(SharedTextMarker); - - SharedTextMarker.prototype.clear = function() { - if (this.explicitlyCleared) return; - this.explicitlyCleared = true; - for (var i = 0; i < this.markers.length; ++i) - this.markers[i].clear(); - signalLater(this, "clear"); - }; - SharedTextMarker.prototype.find = function() { - return this.primary.find(); - }; - - function markTextShared(doc, from, to, options, type) { - options = copyObj(options); - options.shared = false; - var markers = [markText(doc, from, to, options, type)], primary = markers[0]; - var widget = options.replacedWith; - linkedDocs(doc, function(doc) { - if (widget) options.replacedWith = widget.cloneNode(true); - markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)); - for (var i = 0; i < doc.linked.length; ++i) - if (doc.linked[i].isParent) return; - primary = lst(markers); - }); - return new SharedTextMarker(markers, primary); - } - - // TEXTMARKER SPANS - - function getMarkedSpanFor(spans, marker) { - if (spans) for (var i = 0; i < spans.length; ++i) { - var span = spans[i]; - if (span.marker == marker) return span; - } - } - function removeMarkedSpan(spans, span) { - for (var r, i = 0; i < spans.length; ++i) - if (spans[i] != span) (r || (r = [])).push(spans[i]); - return r; - } - function addMarkedSpan(line, span) { - line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; - span.marker.attachLine(line); - } - - function markedSpansBefore(old, startCh, isInsert) { - if (old) for (var i = 0, nw; i < old.length; ++i) { - var span = old[i], marker = span.marker; - var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); - if (startsBefore || - (marker.inclusiveLeft && marker.inclusiveRight || 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); - } - } - } - if (sameLine && first) { - // Make sure we didn't create any zero-length spans - for (var i = 0; i < first.length; ++i) - if (first[i].from != null && first[i].from == first[i].to && first[i].marker.type != "bookmark") - first.splice(i--, 1); - if (!first.length) first = null; - } - - 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.marker.replacedWith) continue; - if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) - return true; - } - } - function lineIsHiddenInner(doc, line, span) { - if (span.to == null) { - var end = span.marker.find().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.marker.replacedWith && 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) { - if (options) for (var opt in options) if (options.hasOwnProperty(opt)) - this[opt] = options[opt]; - this.cm = cm; - this.node = node; - }; - eventMixin(LineWidget); - 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; - var aboveVisible = heightAtLine(this.cm, this.line) < this.cm.doc.scrollTop; - updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this))); - if (aboveVisible) addToScrollPos(this.cm, 0, -this.height); - 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) { - var widgets = line.widgets || (line.widgets = []); - if (widget.insertAt == null) widgets.push(widget); - else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget); - widget.line = line; - if (!lineIsHidden(cm.doc, line) || widget.showIfHidden) { - var aboveVisible = heightAtLine(cm, line) < cm.doc.scrollTop; - updateLineHeight(line, line.height + widgetHeight(widget)); - if (aboveVisible) addToScrollPos(cm, 0, widget.height); - } - return true; - }); - return widget; - } - - // LINE DATA STRUCTURE - - // Line objects. These hold state related to a line, including - // highlighting info (the styles array). - var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) { - this.text = text; - attachMarkedSpans(this, markedSpans); - this.height = estimateHeight ? estimateHeight(this) : 1; - }; - eventMixin(Line); - Line.prototype.lineNo = function() { return lineNo(this); }; - - function updateLine(line, text, markedSpans, estimateHeight) { - line.text = text; - if (line.stateAfter) line.stateAfter = null; - if (line.styles) line.styles = null; - if (line.order != null) line.order = null; - detachMarkedSpans(line); - attachMarkedSpans(line, markedSpans); - var estHeight = estimateHeight ? estimateHeight(line) : 1; - if (estHeight != line.height) updateLineHeight(line, estHeight); - } - - function cleanUpLine(line) { - line.parent = null; - detachMarkedSpans(line); - } - - // Run the given mode's parser over a line, update the styles - // array, which contains alternating fragments of text and CSS - // classes. - function runMode(cm, text, mode, state, f, forceToEnd) { - var flattenSpans = mode.flattenSpans; - if (flattenSpans == null) flattenSpans = cm.options.flattenSpans; - var curStart = 0, curStyle = null; - var stream = new StringStream(text, cm.options.tabSize), style; - if (text == "" && mode.blankLine) mode.blankLine(state); - while (!stream.eol()) { - if (stream.pos > cm.options.maxHighlightLength) { - flattenSpans = false; - if (forceToEnd) processLine(cm, text, state, stream.pos); - stream.pos = text.length; - style = null; - } else { - style = mode.token(stream, state); - } - if (!flattenSpans || curStyle != style) { - if (curStart < stream.start) f(stream.start, curStyle); - curStart = stream.start; curStyle = style; - } - stream.start = stream.pos; - } - while (curStart < stream.pos) { - // Webkit seems to refuse to render text nodes longer than 57444 characters - var pos = Math.min(stream.pos, curStart + 50000); - f(pos, curStyle); - curStart = pos; - } - } - - function highlightLine(cm, line, state, forceToEnd) { - // A styles array always starts with a number identifying the - // mode/overlays that it is based on (for easy invalidation). - var st = [cm.state.modeGen]; - // Compute the base array of styles - runMode(cm, line.text, cm.doc.mode, state, function(end, style) { - st.push(end, style); - }, forceToEnd); - - // Run overlays, adjust style array. - for (var o = 0; o < cm.state.overlays.length; ++o) { - var overlay = cm.state.overlays[o], i = 1, at = 0; - runMode(cm, line.text, overlay.mode, true, function(end, style) { - var start = i; - // Ensure there's a token end at the current position, and that i points at it - while (at < end) { - var i_end = st[i]; - if (i_end > end) - st.splice(i, 1, end, st[i+1], i_end); - i += 2; - at = Math.min(end, i_end); - } - if (!style) return; - if (overlay.opaque) { - st.splice(start, i - start, end, 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, text, state, startAt) { - var mode = cm.doc.mode; - var stream = new StringStream(text, cm.options.tabSize); - stream.start = stream.pos = startAt || 0; - if (text == "" && mode.blankLine) mode.blankLine(state); - while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) { - mode.token(stream, state); - stream.start = stream.pos; - } - } - - var styleToClassCache = {}; - function interpretTokenStyle(style, builder) { - if (!style) return null; - for (;;) { - var lineClass = style.match(/(?:^|\s)line-(background-)?(\S+)/); - if (!lineClass) break; - style = style.slice(0, lineClass.index) + style.slice(lineClass.index + lineClass[0].length); - var prop = lineClass[1] ? "bgClass" : "textClass"; - if (builder[prop] == null) - builder[prop] = lineClass[2]; - else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(builder[prop])) - builder[prop] += " " + lineClass[2]; - } - return styleToClassCache[style] || - (styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-")); - } - - function buildLineContent(cm, realLine, measure, copyWidgets) { - var merged, line = realLine, empty = true; - while (merged = collapsedSpanAtStart(line)) - line = getLine(cm.doc, merged.find().from.line); - - var builder = {pre: elt("pre"), col: 0, pos: 0, - measure: null, measuredSomething: false, cm: cm, - copyWidgets: copyWidgets}; - - do { - if (line.text) empty = false; - builder.measure = line == realLine && measure; - builder.pos = 0; - builder.addToken = builder.measure ? buildTokenMeasure : buildToken; - if ((ie || webkit) && cm.getOption("lineWrapping")) - builder.addToken = buildTokenSplitSpaces(builder.addToken); - var next = insertLineContent(line, builder, getLineStyles(cm, line)); - if (measure && line == realLine && !builder.measuredSomething) { - measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure)); - builder.measuredSomething = true; - } - if (next) line = getLine(cm.doc, next.to.line); - } while (next); - - if (measure && !builder.measuredSomething && !measure[0]) - measure[0] = builder.pre.appendChild(empty ? 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 || ie_gt10) && (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); - } - } - - var textClass = builder.textClass ? builder.textClass + " " + (realLine.textClass || "") : realLine.textClass; - if (textClass) builder.pre.className = textClass; - - signal(cm, "renderLine", cm, realLine, builder.pre); - return builder; - } - - function defaultSpecialCharPlaceholder(ch) { - var token = elt("span", "\u2022", "cm-invalidchar"); - token.title = "\\u" + ch.charCodeAt(0).toString(16); - return token; - } - - function buildToken(builder, text, style, startStyle, endStyle, title) { - if (!text) return; - var special = builder.cm.options.specialChars; - if (!special.test(text)) { - builder.col += text.length; - var content = document.createTextNode(text); - } else { - var content = document.createDocumentFragment(), pos = 0; - while (true) { - special.lastIndex = pos; - var m = special.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 = builder.cm.options.specialCharPlaceholder(m[0]); - content.appendChild(token); - builder.col += 1; - } - } - } - if (style || startStyle || endStyle || builder.measure) { - var fullStyle = style || ""; - if (startStyle) fullStyle += startStyle; - if (endStyle) fullStyle += endStyle; - var token = elt("span", [content], fullStyle); - if (title) token.title = title; - return builder.pre.appendChild(token); - } - builder.pre.appendChild(content); - } - - function buildTokenMeasure(builder, text, style, startStyle, endStyle) { - var wrapping = builder.cm.options.lineWrapping; - for (var i = 0; i < text.length; ++i) { - var ch = text.charAt(i), start = i == 0; - if (ch >= "\ud800" && ch < "\udbff" && i < text.length - 1) { - ch = text.slice(i, i + 2); - ++i; - } else if (i && wrapping && spanAffectsWrapping(text, i)) { - builder.pre.appendChild(elt("wbr")); - } - var old = builder.measure[builder.pos]; - var span = builder.measure[builder.pos] = - buildToken(builder, ch, style, - start && startStyle, i == text.length - 1 && endStyle); - if (old) span.leftSide = old.leftSide || old; - // In IE single-space nodes wrap differently than spaces - // embedded in larger text nodes, except when set to - // white-space: normal (issue #1268). - if (ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) && - i < text.length - 1 && !/\s/.test(text.charAt(i + 1))) - span.style.whiteSpace = "normal"; - builder.pos += ch.length; - } - if (text.length) builder.measuredSomething = true; - } - - function buildTokenSplitSpaces(inner) { - function split(old) { - var out = " "; - for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0"; - out += " "; - return out; - } - return function(builder, text, style, startStyle, endStyle, title) { - return inner(builder, text.replace(/ {3,}/g, split), style, startStyle, endStyle, title); - }; - } - - function buildCollapsedSpan(builder, size, marker, ignoreWidget) { - var widget = !ignoreWidget && marker.replacedWith; - if (widget) { - if (builder.copyWidgets) widget = widget.cloneNode(true); - builder.pre.appendChild(widget); - if (builder.measure) { - if (size) { - builder.measure[builder.pos] = widget; - } else { - var elt = zeroWidthElement(builder.cm.display.measure); - if (marker.type == "bookmark" && !marker.insertLeft) - builder.measure[builder.pos] = builder.pre.appendChild(elt); - else if (builder.measure[builder.pos]) - return; - else - builder.measure[builder.pos] = builder.pre.insertBefore(elt, widget); - } - builder.measuredSomething = 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, allText = line.text, at = 0; - if (!spans) { - for (var i = 1; i < styles.length; i+=2) - builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder)); - return; - } - - var len = allText.length, pos = 0, i = 1, text = "", style; - var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed; - for (;;) { - if (nextChange == pos) { // Update current marker set - spanStyle = spanEndStyle = spanStartStyle = title = ""; - collapsed = null; nextChange = Infinity; - var foundBookmarks = []; - 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.title && !title) title = m.title; - if (m.collapsed && (!collapsed || collapsed.marker.size < m.size)) - collapsed = sp; - } else if (sp.from > pos && nextChange > sp.from) { - nextChange = sp.from; - } - if (m.type == "bookmark" && sp.from == pos && m.replacedWith) foundBookmarks.push(m); - } - if (collapsed && (collapsed.from || 0) == pos) { - buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos, - collapsed.marker, collapsed.from == null); - if (collapsed.to == null) return collapsed.marker.find(); - } - if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j) - buildCollapsedSpan(builder, 0, foundBookmarks[j]); - } - if (pos >= len) break; - - var upto = Math.min(len, nextChange); - while (true) { - if (text) { - var end = pos + text.length; - if (!collapsed) { - var tokenText = end > upto ? text.slice(0, upto - pos) : text; - builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, - spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title); - } - if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} - pos = end; - spanStartStyle = ""; - } - text = allText.slice(at, at = styles[i++]); - style = interpretTokenStyle(styles[i++], builder); - } - } - } - - // DOCUMENT DATA STRUCTURE - - function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) { - function spansFor(n) {return markedSpans ? markedSpans[n] : null;} - function update(line, text, spans) { - updateLine(line, text, spans, estimateHeight); - signalLater(line, "change", line, change); - } - - var from = change.from, to = change.to, text = change.text; - var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); - var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line; - - // First adjust the line structure - if (from.ch == 0 && to.ch == 0 && lastText == "" && - (!doc.cm || doc.cm.options.wholeLineUpdateBefore)) { - // 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(new Line(text[i], spansFor(i), estimateHeight)); - update(lastLine, lastLine.text, lastSpans); - if (nlines) doc.remove(from.line, nlines); - if (added.length) doc.insert(from.line, added); - } else if (firstLine == lastLine) { - if (text.length == 1) { - update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans); - } else { - for (var added = [], i = 1, e = text.length - 1; i < e; ++i) - added.push(new Line(text[i], spansFor(i), estimateHeight)); - added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)); - update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); - doc.insert(from.line + 1, added); - } - } else if (text.length == 1) { - update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)); - doc.remove(from.line + 1, nlines); - } else { - update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); - update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans); - for (var i = 1, e = text.length - 1, added = []; i < e; ++i) - added.push(new Line(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([new Line("", null)])]); - this.first = firstLine; - this.scrollTop = this.scrollLeft = 0; - this.cantEdit = false; - this.history = makeHistory(); - this.cleanGeneration = 1; - this.frontier = firstLine; - var start = Pos(firstLine, 0); - this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null}; - this.id = ++nextDocId; - this.modeOption = mode; - - if (typeof text == "string") text = splitLines(text); - updateDoc(this, {from: start, to: start, text: text}, null, {head: start, anchor: start}); - }; - - Doc.prototype = createObj(BranchChunk.prototype, { - constructor: Doc, - iter: function(from, to, op) { - if (op) this.iterN(from - this.first, to - from, op); - else this.iterN(this.first, this.first + this.size, from); - }, - - insert: function(at, lines) { - var height = 0; - for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height; - this.insertInner(at - this.first, lines, height); - }, - remove: function(at, n) { this.removeInner(at - this.first, n); }, - - getValue: function(lineSep) { - var lines = getLines(this, this.first, this.first + this.size); - if (lineSep === false) return lines; - return lines.join(lineSep || "\n"); - }, - setValue: function(code) { - var top = Pos(this.first, 0), last = this.first + this.size - 1; - makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), - text: splitLines(code), origin: "setValue"}, - {head: top, anchor: top}, true); - }, - replaceRange: function(code, from, to, origin) { - from = clipPos(this, from); - to = to ? clipPos(this, to) : from; - replaceRange(this, code, from, to, origin); - }, - getRange: function(from, to, lineSep) { - var lines = getBetween(this, clipPos(this, from), clipPos(this, to)); - if (lineSep === false) return lines; - return lines.join(lineSep || "\n"); - }, - - getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;}, - setLine: function(line, text) { - if (isLine(this, line)) - replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line))); - }, - removeLine: function(line) { - if (line) replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line))); - else replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0))); - }, - - getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);}, - getLineNumber: function(line) {return lineNo(line);}, - - getLineHandleVisualStart: function(line) { - if (typeof line == "number") line = getLine(this, line); - return visualLine(this, 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, bias) { - setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), bias); - }), - extendSelection: docOperation(function(from, to, bias) { - extendSelection(this, clipPos(this, from), to && clipPos(this, to), bias); - }), - - 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(this.history.maxGeneration);}, - - markClean: function() { - this.cleanGeneration = this.changeGeneration(); - }, - changeGeneration: function() { - this.history.lastOp = this.history.lastOrigin = null; - return this.history.generation; - }, - isClean: function (gen) { - return this.history.generation == (gen || this.cleanGeneration); - }, - - getHistory: function() { - return {done: copyHistoryArray(this.history.done), - undone: copyHistoryArray(this.history.undone)}; - }, - setHistory: function(histData) { - var hist = this.history = makeHistory(this.history.maxGeneration); - 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]); - - eventMixin(Doc); - - 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(startGen) { - 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 - generation: startGen || 1, maxGeneration: startGen || 1 - }; - } - - 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 from = { line: change.from.line, ch: change.from.ch }; - var histChange = {from: from, to: changeEnd(change), text: getBetween(doc, change.from, change.to)}; - attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); - linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true); - return histChange; - } - - function addToHistory(doc, change, selAfter, opId) { - var hist = doc.history; - hist.undone.length = 0; - var time = +new Date, cur = lst(hist.done); - - if (cur && - (hist.lastOp == opId || - hist.lastOrigin == change.origin && change.origin && - ((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) || - change.origin.charAt(0) == "*"))) { - // Merge this change into the last event - var last = lst(cur.changes); - if (posEq(change.from, change.to) && posEq(change.from, last.to)) { - // Optimized case for simple insertion -- don't want to add - // new changesets for every character typed - last.to = changeEnd(change); - } else { - // Add new sub-event - cur.changes.push(historyChangeFromChange(doc, change)); - } - cur.anchorAfter = selAfter.anchor; cur.headAfter = selAfter.head; - } else { - // Can not be merged, start a new event. - cur = {changes: [historyChangeFromChange(doc, change)], - generation: hist.generation, - anchorBefore: doc.sel.anchor, headBefore: doc.sel.head, - anchorAfter: selAfter.anchor, headAfter: selAfter.head}; - hist.done.push(cur); - hist.generation = ++hist.maxGeneration; - while (hist.done.length > hist.undoDepth) - hist.done.shift(); - } - 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_defaultPrevented(e) { - return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false; - } - 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 signalDOMEvent(cm, e, override) { - signal(cm, override || e.type, cm, e); - return e_defaultPrevented(e) || e.codemirrorIgnore; - } - - 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; - - function eventMixin(ctor) { - ctor.prototype.on = function(type, f) {on(this, type, f);}; - ctor.prototype.off = function(type, f) {off(this, type, f);}; - } - - // MISC UTILITIES - - // Number of pixels added to scroller and sizer to hide scrollbar - var scrollerCutOff = 30; - - // Returned or thrown by various protocols to signal 'I'm not - // handling this'. - var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; - - function Delayed() {this.id = null;} - Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}}; - - // Counts the column offset in a string, taking tabs into account. - // Used mostly to find indentation. - function countColumn(string, end, tabSize, startIndex, startValue) { - if (end == null) { - end = string.search(/[^\s\u00a0]/); - if (end == -1) end = string.length; - } - for (var i = startIndex || 0, n = startValue || 0; i < end; ++i) { - if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); - else ++n; - } - return n; - } - CodeMirror.countColumn = countColumn; - - var spaceStrs = [""]; - function spaceStr(n) { - while (spaceStrs.length <= n) - spaceStrs.push(lst(spaceStrs) + " "); - return spaceStrs[n]; - } - - function lst(arr) { return arr[arr.length-1]; } - - function selectInput(node) { - if (ios) { // Mobile Safari apparently has a bug where select() is broken. - node.selectionStart = 0; - node.selectionEnd = node.value.length; - } else { - // Suppress mysterious IE10 errors - try { node.select(); } - catch(_e) {} - } - } - - function indexOf(collection, elt) { - if (collection.indexOf) return collection.indexOf(elt); - for (var i = 0, e = collection.length; i < e; ++i) - if (collection[i] == elt) return i; - return -1; - } - - function createObj(base, props) { - function Obj() {} - Obj.prototype = base; - var inst = new Obj(); - if (props) copyObj(props, inst); - return inst; - } - - function copyObj(obj, target) { - if (!target) target = {}; - for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop]; - return target; - } - - function emptyArray(size) { - for (var a = [], i = 0; i < size; ++i) a.push(undefined); - return a; - } - - function bind(f) { - var args = Array.prototype.slice.call(arguments, 1); - return function(){return f.apply(null, args);}; - } - - var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; - function isWordChar(ch) { - return /\w/.test(ch) || ch > "\x80" && - (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); - } - - function isEmpty(obj) { - for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false; - return true; - } - - var isExtendingChar = /[\u0300-\u036F\u0483-\u0487\u0488-\u0489\u0591-\u05BD\u05BF\u05C1-\u05C2\u05C4-\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7-\u06E8\u06EA-\u06ED\uA66F\u1DC0–\u1DFF\u20D0–\u20FF\uA670-\uA672\uA674-\uA67D\uA69F\udc00-\udfff\uFE20–\uFE2F]/; - - // DOM UTILITIES - - function elt(tag, content, className, style) { - var e = document.createElement(tag); - if (className) e.className = className; - if (style) e.style.cssText = style; - if (typeof content == "string") setTextContent(e, content); - else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]); - return e; - } - - function removeChildren(e) { - for (var count = e.childNodes.length; count > 0; --count) - e.removeChild(e.firstChild); - return e; - } - - function removeChildrenAndAdd(parent, e) { - return removeChildren(parent).appendChild(e); - } - - function setTextContent(e, str) { - if (ie_lt9) { - e.innerHTML = ""; - e.appendChild(document.createTextNode(str)); - } else e.textContent = str; - } - - function getRect(node) { - return node.getBoundingClientRect(); - } - CodeMirror.replaceGetRect = function(f) { getRect = f; }; - - // FEATURE DETECTION - - // Detect drag-and-drop - var dragAndDrop = function() { - // There is *some* kind of drag-and-drop support in IE6-8, but I - // couldn't get it to work yet. - if (ie_lt9) return false; - var div = elt('div'); - return "draggable" in div || "dragDrop" in div; - }(); - - // For a reason I have yet to figure out, some browsers disallow - // word wrapping between certain characters *only* if a new inline - // element is started between them. This makes it hard to reliably - // measure the position of things, since that requires inserting an - // extra span. This terribly fragile set of tests matches the - // character combinations that suffer from this phenomenon on the - // various browsers. - function spanAffectsWrapping() { return false; } - if (gecko) // Only for "$'" - spanAffectsWrapping = function(str, i) { - return str.charCodeAt(i - 1) == 36 && str.charCodeAt(i) == 39; - }; - else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent)) - spanAffectsWrapping = function(str, i) { - return /\-[^ \-?]|\?[^ !\'\"\),.\-\/:;\?\]\}]/.test(str.slice(i - 1, i + 1)); - }; - else if (webkit && /Chrome\/(?:29|[3-9]\d|\d\d\d)\./.test(navigator.userAgent)) - spanAffectsWrapping = function(str, i) { - var code = str.charCodeAt(i - 1); - return code >= 8208 && code <= 8212; - }; - else if (webkit) - spanAffectsWrapping = function(str, i) { - if (i > 1 && str.charCodeAt(i - 1) == 45) { - if (/\w/.test(str.charAt(i - 2)) && /[^\-?\.]/.test(str.charAt(i))) return true; - if (i > 2 && /[\d\.,]/.test(str.charAt(i - 2)) && /[\d\.,]/.test(str.charAt(i))) return false; - } - return /[~!#%&*)=+}\]\\|\"\.>,:;][({[<]|-[^\-?\.\u2010-\u201f\u2026]|\?[\w~`@#$%\^&*(_=+{[|><]|…[\w~`@#$%\^&*(_=+{[><]/.test(str.slice(i - 1, i + 1)); - }; - - var knownScrollbarWidth; - function scrollbarWidth(measure) { - if (knownScrollbarWidth != null) return knownScrollbarWidth; - var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll"); - removeChildrenAndAdd(measure, test); - if (test.offsetWidth) - knownScrollbarWidth = test.offsetHeight - test.clientHeight; - return knownScrollbarWidth || 0; - } - - var zwspSupported; - function zeroWidthElement(measure) { - if (zwspSupported == null) { - var test = elt("span", "\u200b"); - removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); - if (measure.firstChild.offsetHeight != 0) - zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8; - } - if (zwspSupported) return elt("span", "\u200b"); - else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); - } - - // See if "".split is the broken IE version, if so, provide an - // alternative way to split lines. - var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) { - var pos = 0, result = [], l = string.length; - while (pos <= l) { - var nl = string.indexOf("\n", pos); - if (nl == -1) nl = string.length; - var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); - var rt = line.indexOf("\r"); - if (rt != -1) { - result.push(line.slice(0, rt)); - pos += rt + 1; - } else { - result.push(line); - pos = nl + 1; - } - } - return result; - } : function(string){return string.split(/\r\n?|\n/);}; - CodeMirror.splitLines = splitLines; - - var hasSelection = window.getSelection ? function(te) { - try { return te.selectionStart != te.selectionEnd; } - catch(e) { return false; } - } : function(te) { - try {var range = te.ownerDocument.selection.createRange();} - catch(e) {} - if (!range || range.parentElement() != te) return false; - return range.compareEndPoints("StartToEnd", range) != 0; - }; - - var hasCopyEvent = (function() { - var e = elt("div"); - if ("oncopy" in e) return true; - e.setAttribute("oncopy", "return;"); - return typeof e.oncopy == 'function'; - })(); - - // KEY NAMING - - var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", - 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", - 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", - 46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete", - 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", - 221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home", - 63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"}; - CodeMirror.keyNames = keyNames; - (function() { - // Number keys - for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i); - // Alphabetic keys - for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i); - // Function keys - for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i; - })(); - - // BIDI HELPERS - - function iterateBidiSections(order, from, to, f) { - if (!order) return f(from, to, "ltr"); - var found = false; - for (var i = 0; i < order.length; ++i) { - var part = order[i]; - if (part.from < to && part.to > from || from == to && part.to == from) { - f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr"); - found = true; - } - } - if (!found) f(from, to, "ltr"); - } - - function bidiLeft(part) { return part.level % 2 ? part.to : part.from; } - function bidiRight(part) { return part.level % 2 ? part.from : part.to; } - - function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; } - function lineRight(line) { - var order = getOrder(line); - if (!order) return line.text.length; - return bidiRight(lst(order)); - } - - function lineStart(cm, lineN) { - var line = getLine(cm.doc, lineN); - var visual = visualLine(cm.doc, line); - if (visual != line) lineN = lineNo(visual); - var order = getOrder(visual); - var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual); - return Pos(lineN, ch); - } - function lineEnd(cm, lineN) { - var merged, line; - while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN))) - lineN = merged.find().to.line; - var order = getOrder(line); - var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); - return Pos(lineN, ch); - } - - function compareBidiLevel(order, a, b) { - var linedir = order[0].level; - if (a == linedir) return true; - if (b == linedir) return false; - return a < b; - } - var bidiOther; - function getBidiPartAt(order, pos) { - for (var i = 0, found; i < order.length; ++i) { - var cur = order[i]; - if (cur.from < pos && cur.to > pos) { bidiOther = null; return i; } - if (cur.from == pos || cur.to == pos) { - if (found == null) { - found = i; - } else if (compareBidiLevel(order, cur.level, order[found].level)) { - bidiOther = found; - return i; - } else { - bidiOther = i; - return found; - } - } - } - bidiOther = null; - return found; - } - - function moveInLine(line, pos, dir, byUnit) { - if (!byUnit) return pos + dir; - do pos += dir; - while (pos > 0 && isExtendingChar.test(line.text.charAt(pos))); - return pos; - } - - // This is somewhat involved. It is needed in order to move - // 'visually' through bi-directional text -- i.e., pressing left - // should make the cursor go left, even when in RTL text. The - // tricky part is the 'jumps', where RTL and LTR text touch each - // other. This often requires the cursor offset to move more than - // one unit, in order to visually move one unit. - function moveVisually(line, start, dir, byUnit) { - var bidi = getOrder(line); - if (!bidi) return moveLogically(line, start, dir, byUnit); - var pos = getBidiPartAt(bidi, start), part = bidi[pos]; - var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit); - - for (;;) { - if (target > part.from && target < part.to) return target; - if (target == part.from || target == part.to) { - if (getBidiPartAt(bidi, target) == pos) return target; - part = bidi[pos += dir]; - return (dir > 0) == part.level % 2 ? part.to : part.from; - } else { - part = bidi[pos += dir]; - if (!part) return null; - if ((dir > 0) == part.level % 2) - target = moveInLine(line, part.to, -1, byUnit); - else - target = moveInLine(line, part.from, 1, byUnit); - } - } - } - - function moveLogically(line, start, dir, byUnit) { - var target = start + dir; - if (byUnit) while (target > 0 && isExtendingChar.test(line.text.charAt(target))) target += dir; - return target < 0 || target > line.text.length ? null : target; - } - - // Bidirectional ordering algorithm - // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm - // that this (partially) implements. - - // One-char codes used for character types: - // L (L): Left-to-Right - // R (R): Right-to-Left - // r (AL): Right-to-Left Arabic - // 1 (EN): European Number - // + (ES): European Number Separator - // % (ET): European Number Terminator - // n (AN): Arabic Number - // , (CS): Common Number Separator - // m (NSM): Non-Spacing Mark - // b (BN): Boundary Neutral - // s (B): Paragraph Separator - // t (S): Segment Separator - // w (WS): Whitespace - // N (ON): Other Neutrals - - // Returns null if characters are ordered as they appear - // (left-to-right), or an array of sections ({from, to, level} - // objects) in the order in which they occur visually. - var bidiOrdering = (function() { - // Character types for codepoints 0 to 0xff - var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL"; - // Character types for codepoints 0x600 to 0x6ff - var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr"; - function charType(code) { - if (code <= 0xff) return lowTypes.charAt(code); - else if (0x590 <= code && code <= 0x5f4) return "R"; - else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600); - else if (0x700 <= code && code <= 0x8ac) return "r"; - else return "L"; - } - - var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; - var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; - // Browsers seem to always treat the boundaries of block elements as being L. - var outerType = "L"; - - return function(str) { - if (!bidiRE.test(str)) return false; - var len = str.length, types = []; - for (var i = 0, type; i < len; ++i) - types.push(type = charType(str.charCodeAt(i))); - - // W1. Examine each non-spacing mark (NSM) in the level run, and - // change the type of the NSM to the type of the previous - // character. If the NSM is at the start of the level run, it will - // get the type of sor. - for (var i = 0, prev = outerType; i < len; ++i) { - var type = types[i]; - if (type == "m") types[i] = prev; - else prev = type; - } - - // W2. Search backwards from each instance of a European number - // until the first strong type (R, L, AL, or sor) is found. If an - // AL is found, change the type of the European number to Arabic - // number. - // W3. Change all ALs to R. - for (var i = 0, cur = outerType; i < len; ++i) { - var type = types[i]; - if (type == "1" && cur == "r") types[i] = "n"; - else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; } - } - - // W4. A single European separator between two European numbers - // changes to a European number. A single common separator between - // two numbers of the same type changes to that type. - for (var i = 1, prev = types[0]; i < len - 1; ++i) { - var type = types[i]; - if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1"; - else if (type == "," && prev == types[i+1] && - (prev == "1" || prev == "n")) types[i] = prev; - prev = type; - } - - // W5. A sequence of European terminators adjacent to European - // numbers changes to all European numbers. - // W6. Otherwise, separators and terminators change to Other - // Neutral. - for (var i = 0; i < len; ++i) { - var type = types[i]; - if (type == ",") types[i] = "N"; - else if (type == "%") { - for (var end = i + 1; end < len && types[end] == "%"; ++end) {} - var replace = (i && types[i-1] == "!") || (end < len - 1 && types[end] == "1") ? "1" : "N"; - for (var j = i; j < end; ++j) types[j] = replace; - i = end - 1; - } - } - - // W7. Search backwards from each instance of a European number - // until the first strong type (R, L, or sor) is found. If an L is - // found, then change the type of the European number to L. - for (var i = 0, cur = outerType; i < len; ++i) { - var type = types[i]; - if (cur == "L" && type == "1") types[i] = "L"; - else if (isStrong.test(type)) cur = type; - } - - // N1. A sequence of neutrals takes the direction of the - // surrounding strong text if the text on both sides has the same - // direction. European and Arabic numbers act as if they were R in - // terms of their influence on neutrals. Start-of-level-run (sor) - // and end-of-level-run (eor) are used at level run boundaries. - // N2. Any remaining neutrals take the embedding direction. - for (var i = 0; i < len; ++i) { - if (isNeutral.test(types[i])) { - for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {} - var before = (i ? types[i-1] : outerType) == "L"; - var after = (end < len - 1 ? types[end] : outerType) == "L"; - var replace = before || after ? "L" : "R"; - for (var j = i; j < end; ++j) types[j] = replace; - i = end - 1; - } - } - - // Here we depart from the documented algorithm, in order to avoid - // building up an actual levels array. Since there are only three - // levels (0, 1, 2) in an implementation that doesn't take - // explicit embedding into account, we can build up the order on - // the fly, without following the level-based algorithm. - var order = [], m; - for (var i = 0; i < len;) { - if (countsAsLeft.test(types[i])) { - var start = i; - for (++i; i < len && countsAsLeft.test(types[i]); ++i) {} - order.push({from: start, to: i, level: 0}); - } else { - var pos = i, at = order.length; - for (++i; i < len && types[i] != "L"; ++i) {} - for (var j = pos; j < i;) { - if (countsAsNum.test(types[j])) { - if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1}); - var nstart = j; - for (++j; j < i && countsAsNum.test(types[j]); ++j) {} - order.splice(at, 0, {from: nstart, to: j, level: 2}); - pos = j; - } else ++j; - } - if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1}); - } - } - if (order[0].level == 1 && (m = str.match(/^\s+/))) { - order[0].from = m[0].length; - order.unshift({from: 0, to: m[0].length, level: 0}); - } - if (lst(order).level == 1 && (m = str.match(/\s+$/))) { - lst(order).to -= m[0].length; - order.push({from: len - m[0].length, to: len, level: 0}); - } - if (order[0].level != lst(order).level) - order.push({from: len, to: len, level: order[0].level}); - - return order; - }; - })(); - - // THE END - - CodeMirror.version = "3.20.0"; - - return CodeMirror; -})(); |