diff -r 03cd1b3e2e70 -r 6c04b26f9a9a dew/src/main/resources/org/apidesign/bck2brwsr/dew/js/codemirror/codemirror.js --- a/dew/src/main/resources/org/apidesign/bck2brwsr/dew/js/codemirror/codemirror.js Tue Feb 11 10:48:24 2014 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,4553 +0,0 @@ -// CodeMirror version 3.0 -// -// CodeMirror is the only global var we claim -window.CodeMirror = (function() { - "use strict"; - - // BROWSER SNIFFING - - // Crude, but necessary to handle a number of hard-to-feature-detect - // bugs and behavior differences. - var gecko = /gecko\/\d/i.test(navigator.userAgent); - var ie = /MSIE \d/.test(navigator.userAgent); - var ie_lt8 = /MSIE [1-7]\b/.test(navigator.userAgent); - var ie_lt9 = /MSIE [1-8]\b/.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|IEMobile/i.test(navigator.userAgent); - var mac = ios || /Mac/.test(navigator.platform); - - // 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 display = this.display = makeDisplay(place); - display.wrapper.CodeMirror = this; - updateGutters(this); - if (options.autofocus && !mobile) focusInput(this); - - this.view = makeView(new BranchChunk([new LeafChunk([makeLine("", null, textHeight(display))])])); - this.nextOpId = 0; - loadMode(this); - themeChanged(this); - if (options.lineWrapping) - this.display.wrapper.className += " CodeMirror-wrap"; - - // Initialize the content. - this.setValue(options.value || ""); - // Override magic textarea content restore that IE sometimes does - // on our hidden textarea on reload - if (ie) setTimeout(bind(resetInput, this, true), 20); - this.view.history = makeHistory(); - - 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) { - var d = {}; - var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none;"); - input.setAttribute("wrap", "off"); input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); - // Wraps and hides input textarea - d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); - // The actual fake scrollbars. - d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar"); - d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar"); - d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); - // DIVs containing the selection and the actual code - d.lineDiv = elt("div"); - d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); - // Blinky cursor, and element used to ensure cursor fits at the end of a line - d.cursor = elt("pre", "\u00a0", "CodeMirror-cursor"); - // Secondary cursor, shown when on a 'jump' in bi-directional text - d.otherCursor = elt("pre", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"); - // Used to measure text size - d.measure = elt("div", null, "CodeMirror-measure"); - // Wraps everything that needs to exist inside the vertically-padded coordinate system - d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor], - null, "position: relative; outline: none"); - // Moved around its parent to cover visible view - d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative"); - // Set to the height of the text, causes scrolling - d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); - // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers - d.heightForcer = elt("div", "\u00a0", null, "position: absolute; height: " + scrollerCutOff + "px"); - // Will contain the gutters, if any - d.gutters = elt("div", null, "CodeMirror-gutters"); - d.lineGutter = null; - // Helper element to properly size the gutter backgrounds - var scrollerInner = elt("div", [d.sizer, d.heightForcer, d.gutters], null, "position: relative; min-height: 100%"); - // Provides scrolling - d.scroller = elt("div", [scrollerInner], "CodeMirror-scroll"); - d.scroller.setAttribute("tabIndex", "-1"); - // The element in which the editor lives. - d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV, - d.scrollbarFiller, d.scroller], "CodeMirror"); - // Work around IE7 z-index bug - if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } - if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper); - - // Needed to hide big blue blinking cursor on Mobile Safari - if (ios) input.style.width = "0px"; - if (!webkit) d.scroller.draggable = true; - // Needed to handle Tab key in KHTML - if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; } - // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). - else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px"; - - // Current visible range (may be bigger than the view window). - d.viewOffset = d.showingFrom = d.showingTo = d.lastSizeC = 0; - - // Used to only resize the line number gutter when necessary (when - // the amount of lines crosses a boundary that makes its width change) - d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null; - // See readInput and resetInput - d.prevInput = ""; - // Set to true when a non-horizontal-scrolling widget is added. As - // an optimization, widget aligning is skipped when d is false. - d.alignWidgets = false; - // Flag that indicates whether we currently expect input to appear - // (after some event like 'keypress' or 'input') and are polling - // intensively. - d.pollingFast = false; - // Self-resetting timeout for the poller - d.poll = new Delayed(); - // True when a drag from the editor is active - d.draggingText = false; - - d.cachedCharWidth = d.cachedTextHeight = null; - d.measureLineCache = []; - d.measureLineCachePos = 0; - - // Tracks when resetInput has punted to just putting a short - // string instead of the (large) selection. - d.inaccurateSelection = false; - - // Used to adjust overwrite behaviour when a paste has been - // detected - d.pasteIncoming = false; - - return d; - } - - // VIEW CONSTRUCTOR - - function makeView(doc) { - var selPos = {line: 0, ch: 0}; - return { - doc: doc, - // frontier is the point up to which the content has been parsed, - frontier: 0, highlight: new Delayed(), - sel: {from: selPos, to: selPos, head: selPos, anchor: selPos, shift: false, extend: false}, - scrollTop: 0, scrollLeft: 0, - overwrite: false, focused: false, - // Tracks the maximum line length so that - // the horizontal scrollbar can be kept - // static when scrolling. - maxLine: getLine(doc, 0), - maxLineLength: 0, - maxLineChanged: false, - suppressEdits: false, - goalColumn: null, - cantEdit: false, - keyMaps: [] - }; - } - - // STATE UPDATES - - // Used to get the editor into a consistent state again when options change. - - function loadMode(cm) { - var doc = cm.view.doc; - cm.view.mode = CodeMirror.getMode(cm.options, cm.options.mode); - doc.iter(0, doc.size, function(line) { line.stateAfter = null; }); - cm.view.frontier = 0; - startWorker(cm, 100); - } - - function wrappingChanged(cm) { - var doc = cm.view.doc, th = textHeight(cm.display); - if (cm.options.lineWrapping) { - cm.display.wrapper.className += " CodeMirror-wrap"; - var perLine = cm.display.scroller.clientWidth / charWidth(cm.display) - 3; - doc.iter(0, doc.size, function(line) { - if (line.height == 0) return; - var guess = Math.ceil(line.text.length / perLine) || 1; - if (guess != 1) updateLineHeight(line, guess * th); - }); - cm.display.sizer.style.minWidth = ""; - } else { - cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", ""); - computeMaxLength(cm.view); - doc.iter(0, doc.size, function(line) { - if (line.height != 0) updateLineHeight(line, th); - }); - } - regChange(cm, 0, doc.size); - clearCaches(cm); - setTimeout(function(){updateScrollbars(cm.display, cm.view.doc.height);}, 100); - } - - function keyMapChanged(cm) { - var style = keyMap[cm.options.keyMap].style; - cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") + - (style ? " cm-keymap-" + style : ""); - } - - function themeChanged(cm) { - cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + - cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); - clearCaches(cm); - } - - function guttersChanged(cm) { - updateGutters(cm); - updateDisplay(cm, true); - } - - 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(view) { - view.maxLine = getLine(view.doc, 0); - view.maxLineLength = lineLength(view.doc, view.maxLine); - view.maxLineChanged = true; - view.doc.iter(1, view.doc.size, function(line) { - var len = lineLength(view.doc, line); - if (len > view.maxLineLength) { - view.maxLineLength = len; - view.maxLine = line; - } - }); - } - - // Make sure the gutters options contains the element - // "CodeMirror-linenumbers" when the lineNumbers option is true. - function setGuttersForLineNumbers(options) { - var found = false; - for (var i = 0; i < options.gutters.length; ++i) { - if (options.gutters[i] == "CodeMirror-linenumbers") { - if (options.lineNumbers) found = true; - else options.gutters.splice(i--, 1); - } - } - if (!found && options.lineNumbers) - options.gutters.push("CodeMirror-linenumbers"); - } - - // SCROLLBARS - - // Re-synchronize the fake scrollbars with the actual size of the - // content. Optionally force a scrollTop. - function updateScrollbars(d /* display */, docHeight) { - var totalHeight = docHeight + 2 * paddingTop(d); - d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px"; - var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight); - var needsH = d.scroller.scrollWidth > d.scroller.clientWidth; - var needsV = scrollHeight > d.scroller.clientHeight; - if (needsV) { - d.scrollbarV.style.display = "block"; - d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0"; - d.scrollbarV.firstChild.style.height = - (scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px"; - } else d.scrollbarV.style.display = ""; - if (needsH) { - d.scrollbarH.style.display = "block"; - d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0"; - d.scrollbarH.firstChild.style.width = - (d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px"; - } else d.scrollbarH.style.display = ""; - if (needsH && needsV) { - d.scrollbarFiller.style.display = "block"; - d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px"; - } else d.scrollbarFiller.style.display = ""; - - if (mac_geLion && scrollbarWidth(d.measure) === 0) - d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px"; - } - - function visibleLines(display, doc, viewPort) { - var top = display.scroller.scrollTop, height = display.wrapper.clientHeight; - if (typeof viewPort == "number") top = viewPort; - else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;} - top = Math.floor(top - paddingTop(display)); - var bottom = Math.ceil(top + height); - return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)}; - } - - // LINE NUMBERS - - function alignHorizontally(cm) { - var display = cm.display; - if (!display.alignWidgets && !display.gutters.firstChild) return; - var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.view.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; - } - display.gutters.style.left = (comp + gutterW) + "px"; - } - - function maybeUpdateLineNumberWidth(cm) { - if (!cm.options.lineNumbers) return false; - var doc = cm.view.doc, last = lineNumberFor(cm.options, 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 display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left; - } - - // DISPLAY DRAWING - - function updateDisplay(cm, changes, viewPort) { - var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo; - var updated = updateDisplayInner(cm, changes, viewPort); - if (updated) { - signalLater(cm, cm, "update", cm); - if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo) - signalLater(cm, cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo); - } - updateSelection(cm); - updateScrollbars(cm.display, cm.view.doc.height); - - return updated; - } - - // Uses a set of changes plus the current scroll position to - // determine which DOM updates have to be made, and makes the - // updates. - function updateDisplayInner(cm, changes, viewPort) { - var display = cm.display, doc = cm.view.doc; - if (!display.wrapper.clientWidth) { - display.showingFrom = display.showingTo = display.viewOffset = 0; - return; - } - - // Compute the new visible window - // If scrollTop is specified, use that to determine which lines - // to render instead of the current scrollbar position. - var visible = visibleLines(display, doc, viewPort); - // Bail out if the visible area is already rendered and nothing changed. - if (changes !== true && changes.length == 0 && - visible.from > display.showingFrom && visible.to < display.showingTo) - return; - - if (changes && maybeUpdateLineNumberWidth(cm)) - changes = true; - display.sizer.style.marginLeft = display.scrollbarH.style.left = display.gutters.offsetWidth + "px"; - - // When merged lines are present, the line that needs to be - // redrawn might not be the one that was changed. - if (changes !== true && sawCollapsedSpans) - for (var i = 0; i < changes.length; ++i) { - var ch = changes[i], merged; - while (merged = collapsedSpanAtStart(getLine(doc, ch.from))) { - var from = merged.find().from.line; - if (ch.diff) ch.diff -= ch.from - from; - ch.from = from; - } - } - - // Used to determine which lines need their line numbers updated - var positionsChangedFrom = changes === true ? 0 : Infinity; - if (cm.options.lineNumbers && changes && changes !== true) - for (var i = 0; i < changes.length; ++i) - if (changes[i].diff) { positionsChangedFrom = changes[i].from; break; } - - var from = Math.max(visible.from - cm.options.viewportMargin, 0); - var to = Math.min(doc.size, visible.to + cm.options.viewportMargin); - if (display.showingFrom < from && from - display.showingFrom < 20) from = display.showingFrom; - if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(doc.size, display.showingTo); - if (sawCollapsedSpans) { - from = lineNo(visualLine(doc, getLine(doc, from))); - while (to < doc.size && lineIsHidden(getLine(doc, to))) ++to; - } - - // Create a range of theoretically intact lines, and punch holes - // in that using the change info. - var intact = changes === true ? [] : - computeIntact([{from: display.showingFrom, to: display.showingTo}], changes); - // Clip off the parts that won't be visible - var intactLines = 0; - for (var i = 0; i < intact.length; ++i) { - var range = intact[i]; - if (range.from < from) range.from = from; - if (range.to > to) range.to = to; - if (range.from >= range.to) intact.splice(i--, 1); - else intactLines += range.to - range.from; - } - if (intactLines == to - from && from == display.showingFrom && to == display.showingTo) - return; - intact.sort(function(a, b) {return a.from - b.from;}); - - if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none"; - patchDisplay(cm, from, to, intact, positionsChangedFrom); - display.lineDiv.style.display = ""; - - var different = from != display.showingFrom || to != display.showingTo || - display.lastSizeC != display.wrapper.clientHeight; - // This is just a bogus formula that detects when the editor is - // resized or the font size changes. - if (different) display.lastSizeC = display.wrapper.clientHeight; - display.showingFrom = from; display.showingTo = to; - startWorker(cm, 100); - - var prevBottom = display.lineDiv.offsetTop; - for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) { - if (ie_lt8) { - var bot = node.offsetTop + node.offsetHeight; - height = bot - prevBottom; - prevBottom = bot; - } else { - var box = node.getBoundingClientRect(); - 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); - } - display.viewOffset = heightAtLine(cm, getLine(doc, from)); - // Position the mover div to align with the current virtual scroll position - display.mover.style.top = display.viewOffset + "px"; - return true; - } - - 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; - // IE does bad things to nodes when .innerHTML = "" is used on a parent - // we still need widgets and markers intact to add back to the new content later - if (!intact.length && !ie && (!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 { - container.removeChild(node); - } - return next; - } - - var nextIntact = intact.shift(), lineNo = from; - cm.view.doc.iter(from, to, function(line) { - if (nextIntact && nextIntact.to == lineNo) nextIntact = intact.shift(); - if (lineIsHidden(line)) { - if (line.height != 0) updateLineHeight(line, 0); - } else if (nextIntact && nextIntact.from <= lineNo && nextIntact.to > lineNo) { - // 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 <= lineNo && cur.lineNumber) - setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineNo)); - cur = cur.nextSibling; - } else { - // This line needs to be generated. - var lineNode = buildLineElement(cm, line, lineNo, dims); - container.insertBefore(lineNode, cur); - lineNode.lineObj = line; - } - ++lineNo; - }); - while (cur) cur = rm(cur); - } - - function buildLineElement(cm, line, lineNo, dims) { - var lineElement = lineContent(cm, line); - var markers = line.gutterMarkers, display = cm.display; - - if (!cm.options.lineNumbers && !markers && !line.bgClass && !line.wrapClass && - (!line.widgets || !line.widgets.length)) return lineElement; - - // Lines with gutter elements or a background class need - // to be wrapped again, and have the extra elements added - // to the wrapper div - - var wrap = elt("div", null, line.wrapClass, "position: relative"); - if (cm.options.lineNumbers || markers) { - var gutterWrap = wrap.appendChild(elt("div", null, null, "position: absolute; left: " + - dims.fixedPos + "px")); - wrap.alignable = [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")); - } - } - // Kludge to make sure the styled element lies behind the selection (by z-index) - if (line.bgClass) - wrap.appendChild(elt("div", "\u00a0", line.bgClass + " CodeMirror-linebackground")); - wrap.appendChild(lineElement); - if (line.widgets) - for (var i = 0, ws = line.widgets; i < ws.length; ++i) { - var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget"); - node.widget = widget; - 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"; - } - if (widget.above) - wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement); - else - wrap.appendChild(node); - } - - if (ie_lt8) wrap.style.zIndex = 2; - return wrap; - } - - // SELECTION / CURSOR - - function updateSelection(cm) { - var display = cm.display; - var collapsed = posEq(cm.view.sel.from, cm.view.sel.to); - if (collapsed || cm.options.showCursorWhenSelecting) - updateSelectionCursor(cm); - else - display.cursor.style.display = display.otherCursor.style.display = "none"; - if (!collapsed) - updateSelectionRange(cm); - else - display.selectionDiv.style.display = "none"; - - // Move the hidden textarea near the cursor to prevent scrolling artifacts - var headPos = cursorCoords(cm, cm.view.sel.head, "div"); - var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect(); - 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.view.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.view.doc, sel = cm.view.sel; - var fragment = document.createDocumentFragment(); - var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display); - - function add(left, top, width, bottom) { - if (top < 0) top = 0; - fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left + - "px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) + - "px; height: " + (bottom - top) + "px")); - } - - function drawForLine(line, fromArg, toArg, retTop) { - var lineObj = getLine(doc, line); - var lineLen = lineObj.text.length, rVal = retTop ? Infinity : -Infinity; - function coords(ch) { - return charCoords(cm, {line: line, ch: ch}, "div", lineObj); - } - - iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) { - var leftPos = coords(dir == "rtl" ? to - 1 : from); - var rightPos = coords(dir == "rtl" ? from : to - 1); - var left = leftPos.left, right = rightPos.right; - if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part - add(left, leftPos.top, null, leftPos.bottom); - left = pl; - if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top); - } - if (toArg == null && to == lineLen) right = clientWidth; - if (fromArg == null && from == 0) left = pl; - rVal = retTop ? Math.min(rightPos.top, rVal) : Math.max(rightPos.bottom, rVal); - if (left < pl + 1) left = pl; - add(left, rightPos.top, right - left, rightPos.bottom); - }); - return rVal; - } - - if (sel.from.line == sel.to.line) { - drawForLine(sel.from.line, sel.from.ch, sel.to.ch); - } else { - var fromObj = getLine(doc, sel.from.line); - var cur = fromObj, merged, path = [sel.from.line, sel.from.ch], singleLine; - while (merged = collapsedSpanAtEnd(cur)) { - var found = merged.find(); - path.push(found.from.ch, found.to.line, found.to.ch); - if (found.to.line == sel.to.line) { - path.push(sel.to.ch); - singleLine = true; - break; - } - cur = getLine(doc, found.to.line); - } - - // This is a single, merged line - if (singleLine) { - for (var i = 0; i < path.length; i += 3) - drawForLine(path[i], path[i+1], path[i+2]); - } else { - var middleTop, middleBot, toObj = getLine(doc, sel.to.line); - if (sel.from.ch) - // Draw the first line of selection. - middleTop = drawForLine(sel.from.line, sel.from.ch, null, false); - else - // Simply include it in the middle block. - middleTop = heightAtLine(cm, fromObj) - display.viewOffset; - - if (!sel.to.ch) - middleBot = heightAtLine(cm, toObj) - display.viewOffset; - else - middleBot = drawForLine(sel.to.line, collapsedSpanAtStart(toObj) ? null : 0, sel.to.ch, true); - - if (middleTop < middleBot) add(pl, middleTop, null, middleBot); - } - } - - removeChildrenAndAdd(display.selectionDiv, fragment); - display.selectionDiv.style.display = ""; - } - - // Cursor-blinking - function restartBlink(cm) { - var display = cm.display; - clearInterval(display.blinker); - var on = true; - display.cursor.style.visibility = display.otherCursor.style.visibility = ""; - display.blinker = setInterval(function() { - if (!display.cursor.offsetHeight) return; - display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden"; - }, cm.options.cursorBlinkRate); - } - - // HIGHLIGHT WORKER - - function startWorker(cm, time) { - if (cm.view.frontier < cm.display.showingTo) - cm.view.highlight.set(time, bind(highlightWorker, cm)); - } - - function highlightWorker(cm) { - var view = cm.view, doc = view.doc; - if (view.frontier >= cm.display.showingTo) return; - var end = +new Date + cm.options.workTime; - var state = copyState(view.mode, getStateBefore(cm, view.frontier)); - var changed = [], prevChange; - doc.iter(view.frontier, Math.min(doc.size, cm.display.showingTo + 500), function(line) { - if (view.frontier >= cm.display.showingFrom) { // Visible - if (highlightLine(cm, line, state) && view.frontier >= cm.display.showingFrom) { - if (prevChange && prevChange.end == view.frontier) prevChange.end++; - else changed.push(prevChange = {start: view.frontier, end: view.frontier + 1}); - } - line.stateAfter = copyState(view.mode, state); - } else { - processLine(cm, line, state); - line.stateAfter = view.frontier % 5 == 0 ? copyState(view.mode, state) : null; - } - ++view.frontier; - if (+new Date > end) { - startWorker(cm, cm.options.workDelay); - return true; - } - }); - if (changed.length) - operation(cm, function() { - for (var i = 0; i < changed.length; ++i) - regChange(this, changed[i].start, changed[i].end); - })(); - } - - // Finds the line to start with when starting a parse. Tries to - // find a line with a stateAfter, so that it can start with a - // valid state. If that fails, it returns the line with the - // smallest indentation, which tends to need the least context to - // parse correctly. - function findStartLine(cm, n) { - var minindent, minline, doc = cm.view.doc; - for (var search = n, lim = n - 100; search > lim; --search) { - if (search == 0) return 0; - var line = getLine(doc, search-1); - if (line.stateAfter) return search; - var indented = countColumn(line.text, null, cm.options.tabSize); - if (minline == null || minindent > indented) { - minline = search - 1; - minindent = indented; - } - } - return minline; - } - - function getStateBefore(cm, n) { - var view = cm.view; - var pos = findStartLine(cm, n), state = pos && getLine(view.doc, pos-1).stateAfter; - if (!state) state = startState(view.mode); - else state = copyState(view.mode, state); - view.doc.iter(pos, n, function(line) { - processLine(cm, line, state); - var save = pos == n - 1 || pos % 5 == 0 || pos >= view.showingFrom && pos < view.showingTo; - line.stateAfter = save ? copyState(view.mode, state) : null; - ++pos; - }); - return state; - } - - // POSITION MEASUREMENT - - function paddingTop(display) {return display.lineSpace.offsetTop;} - function paddingLeft(display) { - var e = removeChildrenAndAdd(display.measure, elt("pre")).appendChild(elt("span", "x")); - return e.offsetLeft; - } - - function measureChar(cm, line, ch, data) { - var data = data || measureLine(cm, line), dir = -1; - for (var pos = ch;; pos += dir) { - var r = data[pos]; - if (r) break; - if (dir < 0 && pos == 0) dir = 1; - } - return {left: pos < ch ? r.right : r.left, - right: pos > ch ? r.left : r.right, - top: r.top, bottom: r.bottom}; - } - - function measureLine(cm, line) { - // First look in the cache - var display = cm.display, cache = cm.display.measureLineCache; - for (var i = 0; i < cache.length; ++i) { - var memo = cache[i]; - if (memo.text == line.text && memo.markedSpans == line.markedSpans && - display.scroller.clientWidth == memo.width) - return memo.measure; - } - - var measure = measureLineInner(cm, line); - // Store result in the cache - var memo = {text: line.text, width: display.scroller.clientWidth, - markedSpans: line.markedSpans, measure: measure}; - if (cache.length == 16) cache[++display.measureLineCachePos % 16] = memo; - else cache.push(memo); - return measure; - } - - function measureLineInner(cm, line) { - var display = cm.display, measure = emptyArray(line.text.length); - var pre = lineContent(cm, line, measure); - - // IE does not cache element positions of inline elements between - // calls to getBoundingClientRect. This makes the loop below, - // which gathers the positions of all the characters on the line, - // do an amount of layout work quadratic to the number of - // characters. When line wrapping is off, we try to improve things - // by first subdividing the line into a bunch of inline blocks, so - // that IE can reuse most of the layout information from caches - // for those blocks. This does interfere with line wrapping, so it - // doesn't work when wrapping is on, but in that case the - // situation is slightly better, since IE does cache line-wrapping - // information and only recomputes per-line. - if (ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) { - var fragment = document.createDocumentFragment(); - var chunk = 10, n = pre.childNodes.length; - for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) { - var wrap = elt("div", null, null, "display: inline-block"); - for (var j = 0; j < chunk && n; ++j) { - wrap.appendChild(pre.firstChild); - --n; - } - fragment.appendChild(wrap); - } - pre.appendChild(fragment); - } - - removeChildrenAndAdd(display.measure, pre); - - var outer = display.lineDiv.getBoundingClientRect(); - var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight; - for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) { - var size = cur.getBoundingClientRect(); - var top = Math.max(0, size.top - outer.top), bot = Math.min(size.bottom - outer.top, maxBot); - for (var j = 0; j < vranges.length; j += 2) { - var rtop = vranges[j], rbot = vranges[j+1]; - if (rtop > bot || rbot < top) continue; - if (rtop <= top && rbot >= bot || - top <= rtop && bot >= rbot || - Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) { - vranges[j] = Math.min(top, rtop); - vranges[j+1] = Math.max(bot, rbot); - break; - } - } - if (j == vranges.length) vranges.push(top, bot); - data[i] = {left: size.left - outer.left, right: size.right - outer.left, top: j}; - } - for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) { - var vr = cur.top; - cur.top = vranges[vr]; cur.bottom = vranges[vr+1]; - } - return data; - } - - function clearCaches(cm) { - cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0; - cm.display.cachedCharWidth = cm.display.cachedTextHeight = null; - cm.view.maxLineChanged = true; - } - - // 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 = lineObj.widgets[i].node.offsetHeight; - rect.top += size; rect.bottom += size; - } - if (context == "line") return rect; - if (!context) context = "local"; - var yOff = heightAtLine(cm, lineObj); - if (context != "local") yOff -= cm.display.viewOffset; - if (context == "page") { - var lOff = cm.display.lineSpace.getBoundingClientRect(); - yOff += lOff.top + (window.pageYOffset || (document.documentElement || document.body).scrollTop); - var xOff = lOff.left + (window.pageXOffset || (document.documentElement || document.body).scrollLeft); - rect.left += xOff; rect.right += xOff; - } - rect.top += yOff; rect.bottom += yOff; - return rect; - } - - function charCoords(cm, pos, context, lineObj) { - if (!lineObj) lineObj = getLine(cm.view.doc, pos.line); - return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch), context); - } - - function cursorCoords(cm, pos, context, lineObj, measurement) { - lineObj = lineObj || getLine(cm.view.doc, pos.line); - if (!measurement) measurement = measureLine(cm, lineObj); - function get(ch, right) { - var m = measureChar(cm, lineObj, ch, measurement); - if (right) m.left = m.right; else m.right = m.left; - return intoCoordSystem(cm, lineObj, m, context); - } - var order = getOrder(lineObj), ch = pos.ch; - if (!order) return get(ch); - var main, other, linedir = order[0].level; - for (var i = 0; i < order.length; ++i) { - var part = order[i], rtl = part.level % 2, nb, here; - if (part.from < ch && part.to > ch) return get(ch, rtl); - var left = rtl ? part.to : part.from, right = rtl ? part.from : part.to; - if (left == ch) { - // Opera and IE return bogus offsets and widths for edges - // where the direction flips, but only for the side with the - // lower level. So we try to use the side with the higher - // level. - if (i && part.level < (nb = order[i-1]).level) here = get(nb.level % 2 ? nb.from : nb.to - 1, true); - else here = get(rtl && part.from != part.to ? ch - 1 : ch); - if (rtl == linedir) main = here; else other = here; - } else if (right == ch) { - var nb = i < order.length - 1 && order[i+1]; - if (!rtl && nb && nb.from == nb.to) continue; - if (nb && part.level < nb.level) here = get(nb.level % 2 ? nb.to - 1 : nb.from); - else here = get(rtl ? ch : ch - 1, true); - if (rtl == linedir) main = here; else other = here; - } - } - if (linedir && !ch) other = get(order[0].to - 1); - if (!main) return other; - if (other) main.other = other; - return main; - } - - // Coords must be lineSpace-local - function coordsChar(cm, x, y) { - var doc = cm.view.doc; - y += cm.display.viewOffset; - if (y < 0) return {line: 0, ch: 0, outside: true}; - var lineNo = lineAtHeight(doc, y); - if (lineNo >= doc.size) return {line: doc.size - 1, ch: getLine(doc, doc.size - 1).text.length}; - if (x < 0) x = 0; - - for (;;) { - var lineObj = getLine(doc, lineNo); - var found = coordsCharInner(cm, lineObj, lineNo, x, y); - var merged = collapsedSpanAtEnd(lineObj); - if (merged && found.ch == lineRight(lineObj)) - lineNo = merged.find().to.line; - else - return found; - } - } - - function coordsCharInner(cm, lineObj, lineNo, x, y) { - var innerOff = y - heightAtLine(cm, lineObj); - var wrongLine = false, cWidth = cm.display.wrapper.clientWidth; - var measurement = measureLine(cm, lineObj); - - function getX(ch) { - var sp = cursorCoords(cm, {line: lineNo, ch: ch}, "line", - lineObj, measurement); - wrongLine = true; - if (innerOff > sp.bottom) return Math.max(0, sp.left - cWidth); - else if (innerOff < sp.top) return sp.left + cWidth; - else wrongLine = false; - return sp.left; - } - - var bidi = getOrder(lineObj), dist = lineObj.text.length; - var from = lineLeft(lineObj), to = lineRight(lineObj); - var fromX = paddingLeft(cm.display), toX = getX(to); - - if (x > toX) return {line: lineNo, ch: to, outside: wrongLine}; - // Do a binary search between these bounds. - for (;;) { - if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) { - var after = x - fromX < toX - x, ch = after ? from : to; - while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch; - return {line: lineNo, ch: ch, after: after, outside: wrongLine}; - } - 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 (wrongLine) toX += 1000; dist -= step;} - else {from = middle; fromX = middleX; 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. - - function startOperation(cm) { - if (cm.curOp) ++cm.curOp.depth; - else cm.curOp = { - // Nested operations delay update until the outermost one - // finishes. - depth: 1, - // An array of ranges of lines that have to be updated. See - // updateDisplay. - changes: [], - delayedCallbacks: [], - updateInput: null, - userSelChange: null, - textChanged: null, - selectionChanged: false, - updateMaxLine: false, - id: ++cm.nextOpId - }; - } - - function endOperation(cm) { - var op = cm.curOp; - if (--op.depth) return; - cm.curOp = null; - var view = cm.view, display = cm.display; - if (op.updateMaxLine) computeMaxLength(view); - if (view.maxLineChanged && !cm.options.lineWrapping) { - var width = measureChar(cm, view.maxLine, view.maxLine.text.length).right; - display.sizer.style.minWidth = (width + 3 + scrollerCutOff) + "px"; - view.maxLineChanged = false; - } - var newScrollPos, updated; - if (op.selectionChanged) { - var coords = cursorCoords(cm, view.sel.head); - newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom); - } - if (op.changes.length || newScrollPos && newScrollPos.scrollTop != null) - updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop); - if (!updated && op.selectionChanged) updateSelection(cm); - if (newScrollPos) scrollCursorIntoView(cm); - if (op.selectionChanged) restartBlink(cm); - - if (view.focused && op.updateInput) - resetInput(cm, op.userSelChange); - - if (op.textChanged) - signal(cm, "change", cm, op.textChanged); - if (op.selectionChanged) signal(cm, "cursorActivity", cm); - for (var i = 0; i < op.delayedCallbacks.length; ++i) op.delayedCallbacks[i](cm); - } - - // Wraps a function in an operation. Returns the wrapped function. - function operation(cm1, f) { - return function() { - var cm = cm1 || this; - startOperation(cm); - try {var result = f.apply(cm, arguments);} - finally {endOperation(cm);} - return result; - }; - } - - function regChange(cm, from, to, lendiff) { - cm.curOp.changes.push({from: from, to: to, diff: lendiff}); - } - - // INPUT HANDLING - - function slowPoll(cm) { - if (cm.view.pollingFast) return; - cm.display.poll.set(cm.options.pollInterval, function() { - readInput(cm); - if (cm.view.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, view = cm.view, sel = view.sel; - if (!view.focused || hasSelection(input) || isReadOnly(cm)) return false; - var text = input.value; - if (text == prevInput && posEq(sel.from, sel.to)) return false; - startOperation(cm); - view.sel.shift = false; - var same = 0, l = Math.min(prevInput.length, text.length); - while (same < l && prevInput[same] == text[same]) ++same; - var from = sel.from, to = sel.to; - if (same < prevInput.length) - from = {line: from.line, ch: from.ch - (prevInput.length - same)}; - else if (view.overwrite && posEq(from, to) && !cm.display.pasteIncoming) - to = {line: to.line, ch: Math.min(getLine(cm.view.doc, to.line).text.length, to.ch + (text.length - same))}; - var updateInput = cm.curOp.updateInput; - updateDoc(cm, from, to, splitLines(text.slice(same)), "end", - cm.display.pasteIncoming ? "paste" : "input", {from: from, to: to}); - cm.curOp.updateInput = updateInput; - if (text.length > 1000) input.value = cm.display.prevInput = ""; - else cm.display.prevInput = text; - endOperation(cm); - cm.display.pasteIncoming = false; - return true; - } - - function resetInput(cm, user) { - var view = cm.view, minimal, selected; - if (!posEq(view.sel.from, view.sel.to)) { - cm.display.prevInput = ""; - minimal = hasCopyEvent && - (view.sel.to.line - view.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000); - if (minimal) cm.display.input.value = "-"; - else cm.display.input.value = selected || cm.getSelection(); - if (view.focused) selectInput(cm.display.input); - } else if (user) cm.display.prevInput = cm.display.input.value = ""; - cm.display.inaccurateSelection = minimal; - } - - function focusInput(cm) { - if (cm.options.readOnly != "nocursor" && (ie || document.activeElement != cm.display.input)) - cm.display.input.focus(); - } - - function isReadOnly(cm) { - return cm.options.readOnly || cm.view.cantEdit; - } - - // EVENT HANDLERS - - function registerEventHandlers(cm) { - var d = cm.display; - on(d.scroller, "mousedown", operation(cm, onMouseDown)); - on(d.scroller, "dblclick", operation(cm, e_preventDefault)); - on(d.lineSpace, "selectstart", function(e) { - if (!mouseEventInWidget(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 (!gecko) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);}); - - on(d.scroller, "scroll", function() { - setScrollTop(cm, d.scroller.scrollTop); - setScrollLeft(cm, d.scroller.scrollLeft, true); - signal(cm, "scroll", cm); - }); - on(d.scrollbarV, "scroll", function() { - setScrollTop(cm, d.scrollbarV.scrollTop); - }); - on(d.scrollbarH, "scroll", function() { - setScrollLeft(cm, d.scrollbarH.scrollLeft); - }); - - on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);}); - on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);}); - - function reFocus() { if (cm.view.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; }); - on(window, "resize", function resizeHandler() { - // Might be a text scaling operation, clear size caches. - d.cachedCharWidth = d.cachedTextHeight = null; - clearCaches(cm); - if (d.wrapper.parentNode) updateDisplay(cm, true); - else off(window, "resize", resizeHandler); - }); - - on(d.input, "keyup", operation(cm, function(e) { - if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; - if (e_prop(e, "keyCode") == 16) cm.view.sel.shift = false; - })); - on(d.input, "input", bind(fastPoll, cm)); - on(d.input, "keydown", operation(cm, onKeyDown)); - on(d.input, "keypress", operation(cm, onKeyPress)); - on(d.input, "focus", bind(onFocus, cm)); - on(d.input, "blur", bind(onBlur, cm)); - - function drag_(e) { - if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return; - e_stop(e); - } - if (cm.options.dragDrop) { - on(d.scroller, "dragstart", function(e){onDragStart(cm, e);}); - on(d.scroller, "dragenter", drag_); - on(d.scroller, "dragover", drag_); - on(d.scroller, "drop", operation(cm, onDrop)); - } - on(d.scroller, "paste", function(){focusInput(cm); fastPoll(cm);}); - on(d.input, "paste", function() { - d.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 mouseEventInWidget(display, e) { - for (var n = e_target(e); n != display.wrapper; n = n.parentNode) - if (/\bCodeMirror-(?:line)?widget\b/.test(n.className) || - n.parentNode == display.sizer && n != display.mover) return true; - } - - function posFromMouse(cm, e, liberal) { - var display = cm.display; - if (!liberal) { - var target = e_target(e); - if (target == display.scrollbarH || target == display.scrollbarH.firstChild || - target == display.scrollbarV || target == display.scrollbarV.firstChild || - target == display.scrollbarFiller) return null; - } - var x, y, space = display.lineSpace.getBoundingClientRect(); - // Fails unpredictably on IE[67] when mouse is dragged around quickly. - try { x = e.clientX; y = e.clientY; } catch (e) { return null; } - return coordsChar(cm, x - space.left, y - space.top); - } - - var lastClick, lastDoubleClick; - function onMouseDown(e) { - var cm = this, display = cm.display, view = cm.view, sel = view.sel, doc = view.doc; - sel.shift = e_prop(e, "shiftKey"); - - if (mouseEventInWidget(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 (gecko) onContextMenu.call(cm, cm, e); - return; - case 2: - if (start) extendSelection(cm, 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 (!view.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, 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; - view.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, start); - focusInput(cm); - } - }); - // Let the drag handler handle this. - if (webkit) display.scroller.draggable = true; - view.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, clipPos(doc, start)); - - var startstart = sel.from, startend = sel.to; - - function doSelect(cur) { - if (type == "single") { - extendSelection(cm, 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, word.from, startend); - else extendSelection(cm, startstart, word.to); - } else if (type == "triple") { - if (posLess(cur, startstart)) extendSelection(cm, startend, clipPos(doc, {line: cur.line, ch: 0})); - else extendSelection(cm, startstart, clipPos(doc, {line: cur.line + 1, ch: 0})); - } - } - - var editorSize = display.wrapper.getBoundingClientRect(); - // Used to ensure timeout re-tries don't fire when another extend - // happened in the meantime (clearTimeout isn't reliable -- at - // least on Chrome, the timeouts still happen even when cleared, - // if the clear happens after their scheduled firing time). - var counter = 0; - - function extend(e) { - var curCount = ++counter; - var cur = posFromMouse(cm, e, true); - if (!cur) return; - if (!posEq(cur, last)) { - if (!view.focused) onFocus(cm); - last = cur; - doSelect(cur); - var visible = visibleLines(display, doc); - if (cur.line >= visible.to || cur.line < visible.from) - setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150); - } else { - var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0; - if (outside) setTimeout(operation(cm, function() { - if (counter != curCount) return; - display.scroller.scrollTop += outside; - extend(e); - }), 50); - } - } - - function done(e) { - counter = Infinity; - var cur = posFromMouse(cm, e); - if (cur) doSelect(cur); - e_preventDefault(e); - focusInput(cm); - off(document, "mousemove", move); - off(document, "mouseup", up); - } - - var move = operation(cm, function(e) { - if (!ie && !e_button(e)) done(e); - else extend(e); - }); - var up = operation(cm, done); - on(document, "mousemove", move); - on(document, "mouseup", up); - } - - function onDrop(e) { - var cm = this; - if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return; - e_preventDefault(e); - var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; - if (!pos || isReadOnly(cm)) return; - if (files && files.length && window.FileReader && window.File) { - var n = files.length, text = Array(n), read = 0; - var loadFile = function(file, i) { - var reader = new FileReader; - reader.onload = function() { - text[i] = reader.result; - if (++read == n) { - pos = clipPos(cm.view.doc, pos); - operation(cm, function() { - var end = replaceRange(cm, text.join(""), pos, pos, "paste"); - setSelection(cm, pos, end); - })(); - } - }; - 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.view.draggingText && !(posLess(pos, cm.view.sel.from) || posLess(cm.view.sel.to, pos))) { - cm.view.draggingText(e); - if (ie) setTimeout(bind(focusInput, cm), 50); - return; - } - try { - var text = e.dataTransfer.getData("Text"); - if (text) { - var curFrom = cm.view.sel.from, curTo = cm.view.sel.to; - setSelection(cm, pos, pos); - if (cm.view.draggingText) replaceRange(cm, "", curFrom, curTo, "paste"); - cm.replaceSelection(text, null, "paste"); - focusInput(cm); - onFocus(cm); - } - } - catch(e){} - } - } - - function clickInGutter(cm, e) { - var display = cm.display; - try { var mX = e.clientX, mY = e.clientY; } - catch(e) { return false; } - - if (mX >= Math.floor(display.gutters.getBoundingClientRect().right)) return false; - e_preventDefault(e); - if (!hasHandler(cm, "gutterClick")) return true; - - var lineBox = display.lineDiv.getBoundingClientRect(); - if (mY > lineBox.bottom) return true; - mY -= lineBox.top - display.viewOffset; - - for (var i = 0; i < cm.options.gutters.length; ++i) { - var g = display.gutters.childNodes[i]; - if (g && g.getBoundingClientRect().right >= mX) { - var line = lineAtHeight(cm.view.doc, mY); - var gutter = cm.options.gutters[i]; - signalLater(cm, cm, "gutterClick", cm, line, gutter, e); - break; - } - } - return true; - } - - function onDragStart(cm, e) { - 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) - e.dataTransfer.setDragImage(elt('img'), 0, 0); - } - - function setScrollTop(cm, val) { - if (Math.abs(cm.view.scrollTop - val) < 2) return; - cm.view.scrollTop = val; - if (!gecko) updateDisplay(cm, [], val); - if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val; - if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val; - if (gecko) updateDisplay(cm, []); - } - function setScrollLeft(cm, val, isScroller) { - if (isScroller ? val == cm.view.scrollLeft : Math.abs(cm.view.scrollLeft - val) < 2) return; - cm.view.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, wheelDX, wheelDY, wheelStartX, wheelStartY, wheelPixelsPerUnit = null; - // Fill in a browser-detected starting value on browsers where we - // know one. These don't have to be accurate -- the result of them - // being wrong would just be a slight flicker on the first wheel - // scroll (if it is large enough). - if (ie) wheelPixelsPerUnit = -.53; - else if (gecko) wheelPixelsPerUnit = 15; - else if (chrome) wheelPixelsPerUnit = -.7; - else if (safari) wheelPixelsPerUnit = -1/3; - - function onScrollWheel(cm, e) { - var dx = e.wheelDeltaX, dy = e.wheelDeltaY; - if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail; - if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail; - else if (dy == null) dy = e.wheelDelta; - - // Webkit browsers on OS X abort momentum scrolls when the target - // of the scroll event is removed from the scrollable element. - // This hack (see related code in patchDisplay) makes sure the - // element is kept around. - if (dy && mac && webkit) { - for (var cur = e.target; cur != scroll; cur = cur.parentNode) { - if (cur.lineObj) { - cm.display.currentWheelTarget = cur; - break; - } - } - } - - var scroll = cm.display.scroller; - // On some browsers, horizontal scrolling will cause redraws to - // happen before the gutter has been realigned, causing it to - // wriggle around in a most unseemly way. When we have an - // estimated pixels/delta value, we just handle horizontal - // scrolling entirely here. It'll be slightly off from native, but - // better than glitching out. - if (dx && !gecko && !opera && wheelPixelsPerUnit != null) { - if (dy) - setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))); - setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth))); - e_preventDefault(e); - wheelStartX = null; // Abort measurement, if in progress - return; - } - - if (dy && wheelPixelsPerUnit != null) { - var pixels = dy * wheelPixelsPerUnit; - var top = cm.view.scrollTop, bot = top + cm.display.wrapper.clientHeight; - if (pixels < 0) top = Math.max(0, top + pixels - 50); - else bot = Math.min(cm.view.doc.height, bot + pixels + 50); - updateDisplay(cm, [], {top: top, bottom: bot}); - } - - if (wheelSamples < 20) { - if (wheelStartX == null) { - wheelStartX = scroll.scrollLeft; wheelStartY = scroll.scrollTop; - wheelDX = dx; wheelDY = dy; - setTimeout(function() { - if (wheelStartX == null) return; - var movedX = scroll.scrollLeft - wheelStartX; - var movedY = scroll.scrollTop - wheelStartY; - var sample = (movedY && wheelDY && movedY / wheelDY) || - (movedX && wheelDX && movedX / wheelDX); - wheelStartX = wheelStartY = null; - if (!sample) return; - wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1); - ++wheelSamples; - }, 200); - } else { - wheelDX += dx; 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 view = cm.view, prevShift = view.sel.shift; - try { - if (isReadOnly(cm)) view.suppressEdits = true; - if (dropShift) view.sel.shift = false; - bound(cm); - } catch(e) { - if (e != Pass) throw e; - return false; - } finally { - view.sel.shift = prevShift; - view.suppressEdits = false; - } - return true; - } - - function allKeyMaps(cm) { - var maps = cm.view.keyMaps.slice(0); - maps.push(cm.options.keyMap); - if (cm.options.extraKeys) maps.unshift(cm.options.extraKeys); - return maps; - } - - var maybeTransition; - function handleKeyBinding(cm, e) { - // Handle auto keymap transitions - var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto; - clearTimeout(maybeTransition); - if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() { - if (getKeyMap(cm.options.keyMap) == startMap) - cm.options.keyMap = (next.call ? next.call(null, cm) : next); - }, 50); - - var name = keyNames[e_prop(e, "keyCode")], handled = false; - var flipCtrlCmd = mac && (opera || qtwebkit); - if (name == null || e.altGraphKey) return false; - if (e_prop(e, "altKey")) name = "Alt-" + name; - if (e_prop(e, flipCtrlCmd ? "metaKey" : "ctrlKey")) name = "Ctrl-" + name; - if (e_prop(e, flipCtrlCmd ? "ctrlKey" : "metaKey")) name = "Cmd-" + name; - - var stopped = false; - function stop() { stopped = true; } - var keymaps = allKeyMaps(cm); - - if (e_prop(e, "shiftKey")) { - handled = lookupKey("Shift-" + name, keymaps, - function(b) {return doHandleBinding(cm, b, true);}, stop) - || lookupKey(name, keymaps, function(b) { - if (typeof b == "string" && /^go[A-Z]/.test(b)) return doHandleBinding(cm, b); - }, stop); - } else { - handled = lookupKey(name, keymaps, - function(b) { return doHandleBinding(cm, b); }, stop); - } - if (stopped) handled = false; - if (handled) { - e_preventDefault(e); - restartBlink(cm); - if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; } - } - return handled; - } - - function handleCharBinding(cm, e, ch) { - var handled = lookupKey("'" + ch + "'", allKeyMaps(cm), - function(b) { return doHandleBinding(cm, b, true); }); - if (handled) { - e_preventDefault(e); - restartBlink(cm); - } - return handled; - } - - var lastStoppedKey = null; - function onKeyDown(e) { - var cm = this; - if (!cm.view.focused) onFocus(cm); - if (ie && e.keyCode == 27) { e.returnValue = false; } - if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; - var code = e_prop(e, "keyCode"); - // IE does strange things with escape. - cm.view.sel.shift = code == 16 || e_prop(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 && e_prop(e, mac ? "metaKey" : "ctrlKey")) - cm.replaceSelection(""); - } - } - - function onKeyPress(e) { - var cm = this; - if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; - var keyCode = e_prop(e, "keyCode"), charCode = e_prop(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.view.mode.electricChars && - this.options.smartIndent && !isReadOnly(this) && - this.view.mode.electricChars.indexOf(ch) > -1) - setTimeout(operation(cm, function() {indentLine(cm, cm.view.sel.to.line, "smart");}), 75); - if (handleCharBinding(cm, e, ch)) return; - fastPoll(cm); - } - - function onFocus(cm) { - if (cm.options.readOnly == "nocursor") return; - if (!cm.view.focused) { - signal(cm, "focus", cm); - cm.view.focused = true; - if (cm.display.scroller.className.search(/\bCodeMirror-focused\b/) == -1) - cm.display.scroller.className += " CodeMirror-focused"; - resetInput(cm, true); - } - slowPoll(cm); - restartBlink(cm); - } - function onBlur(cm) { - if (cm.view.focused) { - signal(cm, "blur", cm); - cm.view.focused = false; - cm.display.scroller.className = cm.display.scroller.className.replace(" CodeMirror-focused", ""); - } - clearInterval(cm.display.blinker); - setTimeout(function() {if (!cm.view.focused) cm.view.sel.shift = false;}, 150); - } - - var detectingSelectAll; - function onContextMenu(cm, e) { - var display = cm.display, sel = cm.view.sel; - var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; - if (!pos || opera) return; // Opera is difficult. - if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)) - operation(cm, setSelection)(cm, 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; filter: alpha(opacity=5);"; - focusInput(cm); - resetInput(cm, true); - // Adds "Select all" to context menu in FF - if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " "; - - function rehide() { - display.inputDiv.style.position = "relative"; - display.input.style.cssText = oldCSS; - if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos; - slowPoll(cm); - - // Try to detect the user choosing select-all - if (display.input.selectionStart != null) { - clearTimeout(detectingSelectAll); - var extval = display.input.value = " " + (posEq(sel.from, sel.to) ? "" : display.input.value), i = 0; - display.prevInput = " "; - display.input.selectionStart = 1; display.input.selectionEnd = extval.length; - detectingSelectAll = setTimeout(function poll(){ - if (display.prevInput == " " && display.input.selectionStart == 0) - operation(cm, commands.selectAll)(cm); - else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500); - else resetInput(cm); - }, 200); - } - } - - if (gecko) { - e_stop(e); - on(window, "mouseup", function mouseup() { - off(window, "mouseup", mouseup); - setTimeout(rehide, 20); - }); - } else { - setTimeout(rehide, 50); - } - } - - // UPDATING - - // Replace the range from from to to by the strings in newText. - // Afterwards, set the selection to selFrom, selTo. - function updateDoc(cm, from, to, newText, selUpdate, origin) { - // Possibly split or suppress the update based on the presence - // of read-only spans in its range. - var split = sawReadOnlySpans && - removeReadOnlyRanges(cm.view.doc, from, to); - if (split) { - for (var i = split.length - 1; i >= 1; --i) - updateDocInner(cm, split[i].from, split[i].to, [""], origin); - if (split.length) - return updateDocInner(cm, split[0].from, split[0].to, newText, selUpdate, origin); - } else { - return updateDocInner(cm, from, to, newText, selUpdate, origin); - } - } - - function updateDocInner(cm, from, to, newText, selUpdate, origin) { - if (cm.view.suppressEdits) return; - - var view = cm.view, doc = view.doc, old = []; - doc.iter(from.line, to.line + 1, function(line) { - old.push(newHL(line.text, line.markedSpans)); - }); - var startSelFrom = view.sel.from, startSelTo = view.sel.to; - var lines = updateMarkedSpans(hlSpans(old[0]), hlSpans(lst(old)), from.ch, to.ch, newText); - var retval = updateDocNoUndo(cm, from, to, lines, selUpdate, origin); - if (view.history) addChange(cm, from.line, newText.length, old, origin, - startSelFrom, startSelTo, view.sel.from, view.sel.to); - return retval; - } - - function unredoHelper(cm, type) { - var doc = cm.view.doc, hist = cm.view.history; - var set = (type == "undo" ? hist.done : hist.undone).pop(); - if (!set) return; - var anti = {events: [], fromBefore: set.fromAfter, toBefore: set.toAfter, - fromAfter: set.fromBefore, toAfter: set.toBefore}; - for (var i = set.events.length - 1; i >= 0; i -= 1) { - hist.dirtyCounter += type == "undo" ? -1 : 1; - var change = set.events[i]; - var replaced = [], end = change.start + change.added; - doc.iter(change.start, end, function(line) { replaced.push(newHL(line.text, line.markedSpans)); }); - anti.events.push({start: change.start, added: change.old.length, old: replaced}); - var selPos = i ? null : {from: set.fromBefore, to: set.toBefore}; - updateDocNoUndo(cm, {line: change.start, ch: 0}, {line: end - 1, ch: getLine(doc, end-1).text.length}, - change.old, selPos, type); - } - (type == "undo" ? hist.undone : hist.done).push(anti); - } - - function updateDocNoUndo(cm, from, to, lines, selUpdate, origin) { - var view = cm.view, doc = view.doc, display = cm.display; - if (view.suppressEdits) return; - - var nlines = to.line - from.line, firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); - var recomputeMaxLength = false, checkWidthStart = from.line; - if (!cm.options.lineWrapping) { - checkWidthStart = lineNo(visualLine(doc, firstLine)); - doc.iter(checkWidthStart, to.line + 1, function(line) { - if (lineLength(doc, line) == view.maxLineLength) { - recomputeMaxLength = true; - return true; - } - }); - } - - var lastHL = lst(lines), th = textHeight(display); - - // First adjust the line structure - if (from.ch == 0 && to.ch == 0 && hlText(lastHL) == "") { - // This is a whole-line replace. Treated specially to make - // sure line objects move the way they are supposed to. - var added = []; - for (var i = 0, e = lines.length - 1; i < e; ++i) - added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th)); - updateLine(cm, lastLine, lastLine.text, hlSpans(lastHL)); - if (nlines) doc.remove(from.line, nlines, cm); - if (added.length) doc.insert(from.line, added); - } else if (firstLine == lastLine) { - if (lines.length == 1) { - updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]) + - firstLine.text.slice(to.ch), hlSpans(lines[0])); - } else { - for (var added = [], i = 1, e = lines.length - 1; i < e; ++i) - added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th)); - added.push(makeLine(hlText(lastHL) + firstLine.text.slice(to.ch), hlSpans(lastHL), th)); - updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0])); - doc.insert(from.line + 1, added); - } - } else if (lines.length == 1) { - updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]) + - lastLine.text.slice(to.ch), hlSpans(lines[0])); - doc.remove(from.line + 1, nlines, cm); - } else { - var added = []; - updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0])); - updateLine(cm, lastLine, hlText(lastHL) + lastLine.text.slice(to.ch), hlSpans(lastHL)); - for (var i = 1, e = lines.length - 1; i < e; ++i) - added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th)); - if (nlines > 1) doc.remove(from.line + 1, nlines - 1, cm); - doc.insert(from.line + 1, added); - } - - if (cm.options.lineWrapping) { - var perLine = Math.max(5, display.scroller.clientWidth / charWidth(display) - 3); - doc.iter(from.line, from.line + lines.length, function(line) { - if (line.height == 0) return; - var guess = (Math.ceil(line.text.length / perLine) || 1) * th; - if (guess != line.height) updateLineHeight(line, guess); - }); - } else { - doc.iter(checkWidthStart, from.line + lines.length, function(line) { - var len = lineLength(doc, line); - if (len > view.maxLineLength) { - view.maxLine = line; - view.maxLineLength = len; - view.maxLineChanged = true; - recomputeMaxLength = false; - } - }); - if (recomputeMaxLength) cm.curOp.updateMaxLine = true; - } - - // Adjust frontier, schedule worker - view.frontier = Math.min(view.frontier, from.line); - startWorker(cm, 400); - - var lendiff = lines.length - nlines - 1; - // Remember that these lines changed, for updating the display - regChange(cm, from.line, to.line + 1, lendiff); - if (hasHandler(cm, "change")) { - // Normalize lines to contain only strings, since that's what - // the change event handler expects - for (var i = 0; i < lines.length; ++i) - if (typeof lines[i] != "string") lines[i] = lines[i].text; - var changeObj = {from: from, to: to, text: lines, origin: origin}; - if (cm.curOp.textChanged) { - for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {} - cur.next = changeObj; - } else cm.curOp.textChanged = changeObj; - } - - // Update the selection - var newSelFrom, newSelTo, end = {line: from.line + lines.length - 1, - ch: hlText(lastHL).length + (lines.length == 1 ? from.ch : 0)}; - if (selUpdate && typeof selUpdate != "string") { - if (selUpdate.from) { newSelFrom = selUpdate.from; newSelTo = selUpdate.to; } - else newSelFrom = newSelTo = selUpdate; - } else if (selUpdate == "end") { - newSelFrom = newSelTo = end; - } else if (selUpdate == "start") { - newSelFrom = newSelTo = from; - } else if (selUpdate == "around") { - newSelFrom = from; newSelTo = end; - } else { - var adjustPos = function(pos) { - if (posLess(pos, from)) return pos; - if (!posLess(to, pos)) return end; - var line = pos.line + lendiff; - var ch = pos.ch; - if (pos.line == to.line) - ch += hlText(lastHL).length - (to.ch - (to.line == from.line ? from.ch : 0)); - return {line: line, ch: ch}; - }; - newSelFrom = adjustPos(view.sel.from); - newSelTo = adjustPos(view.sel.to); - } - setSelection(cm, newSelFrom, newSelTo, null, true); - return end; - } - - function replaceRange(cm, code, from, to, origin) { - if (!to) to = from; - if (posLess(to, from)) { var tmp = to; to = from; from = tmp; } - return updateDoc(cm, from, to, splitLines(code), null, origin); - } - - // SELECTION - - 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 {line: x.line, ch: x.ch};} - - function clipLine(doc, n) {return Math.max(0, Math.min(n, doc.size-1));} - function clipPos(doc, pos) { - if (pos.line < 0) return {line: 0, ch: 0}; - if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc, doc.size-1).text.length}; - var ch = pos.ch, linelen = getLine(doc, pos.line).text.length; - if (ch == null || ch > linelen) return {line: pos.line, ch: linelen}; - else if (ch < 0) return {line: pos.line, ch: 0}; - else return pos; - } - function isLine(doc, l) {return l >= 0 && l < doc.size;} - - // If shift is held, this will move the selection anchor. Otherwise, - // it'll set the whole selection. - function extendSelection(cm, pos, other, bias) { - var sel = cm.view.sel; - if (sel.shift || sel.extend) { - var anchor = 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(cm, anchor, pos, bias); - } else { - setSelection(cm, pos, other || pos, bias); - } - cm.curOp.userSelChange = true; - } - - // 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(cm, anchor, head, bias, checkAtomic) { - cm.view.goalColumn = null; - var sel = cm.view.sel; - // Skip over atomic spans. - if (checkAtomic || !posEq(anchor, sel.anchor)) - anchor = skipAtomic(cm, anchor, bias, checkAtomic != "push"); - if (checkAtomic || !posEq(head, sel.head)) - head = skipAtomic(cm, 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; - - cm.curOp.updateInput = true; - cm.curOp.selectionChanged = true; - } - - function reCheckSelection(cm) { - setSelection(cm, cm.view.sel.from, cm.view.sel.to, null, "push"); - } - - function skipAtomic(cm, pos, bias, mayClear) { - var doc = cm.view.doc, flipped = false, curPos = pos; - var dir = bias || 1; - cm.view.cantEdit = false; - search: for (;;) { - var line = getLine(doc, curPos.line), toClear; - if (line.markedSpans) { - for (var i = 0; i < line.markedSpans.length; ++i) { - var sp = line.markedSpans[i], m = sp.marker; - if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) && - (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) { - if (mayClear && m.clearOnEnter) { - (toClear || (toClear = [])).push(m); - continue; - } else if (!m.atomic) continue; - var newPos = m.find()[dir < 0 ? "from" : "to"]; - if (posEq(newPos, curPos)) { - newPos.ch += dir; - if (newPos.ch < 0) { - if (newPos.line) newPos = clipPos(doc, {line: newPos.line - 1}); - else newPos = null; - } else if (newPos.ch > line.text.length) { - if (newPos.line < doc.size - 1) newPos = {line: newPos.line + 1, ch: 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(cm, pos, bias, true); - // Otherwise, turn off editing until further notice, and return the start of the doc - cm.view.cantEdit = true; - return {line: 0, ch: 0}; - } - flipped = true; newPos = pos; dir = -dir; - } - } - curPos = newPos; - continue search; - } - } - if (toClear) for (var i = 0; i < toClear.length; ++i) toClear[i].clear(); - } - return curPos; - } - } - - // SCROLLING - - function scrollCursorIntoView(cm) { - var view = cm.view; - var coords = scrollPosIntoView(cm, view.sel.head); - if (!view.focused) return; - var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null; - if (coords.top + box.top < 0) doScroll = true; - else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false; - if (doScroll != null && !phantom) { - var hidden = display.cursor.style.display == "none"; - if (hidden) { - display.cursor.style.display = ""; - display.cursor.style.left = coords.left + "px"; - display.cursor.style.top = (coords.top - display.viewOffset) + "px"; - } - display.cursor.scrollIntoView(doScroll); - if (hidden) display.cursor.style.display = "none"; - } - } - - function scrollPosIntoView(cm, pos) { - for (;;) { - var changed = false, coords = cursorCoords(cm, pos); - var scrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom); - var startTop = cm.view.scrollTop, startLeft = cm.view.scrollLeft; - if (scrollPos.scrollTop != null) { - setScrollTop(cm, scrollPos.scrollTop); - if (Math.abs(cm.view.scrollTop - startTop) > 1) changed = true; - } - if (scrollPos.scrollLeft != null) { - setScrollLeft(cm, scrollPos.scrollLeft); - if (Math.abs(cm.view.scrollLeft - startLeft) > 1) changed = true; - } - if (!changed) return coords; - } - } - - function scrollIntoView(cm, x1, y1, x2, y2) { - var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2); - if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop); - if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft); - } - - function calculateScrollPos(cm, x1, y1, x2, y2) { - var display = cm.display, pt = paddingTop(display); - y1 += pt; y2 += pt; - var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {}; - var docBottom = cm.view.doc.height + 2 * pt; - var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10; - if (y1 < screentop) result.scrollTop = atTop ? 0 : Math.max(0, y1); - else if (y2 > screentop + screen) result.scrollTop = (atBottom ? docBottom : y2) - screen; - - var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft; - x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth; - var gutterw = display.gutters.offsetWidth; - var atLeft = x1 < gutterw + 10; - if (x1 < screenleft + gutterw || atLeft) { - if (atLeft) x1 = 0; - result.scrollLeft = Math.max(0, x1 - 10 - gutterw); - } else if (x2 > screenw + screenleft - 3) { - result.scrollLeft = x2 + 10 - screenw; - } - return result; - } - - // API UTILITIES - - function indentLine(cm, n, how, aggressive) { - var doc = cm.view.doc; - if (!how) how = "add"; - if (how == "smart") { - if (!cm.view.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.view.mode.indent(state, line.text.slice(curSpaceString.length), line.text); - if (indentation == Pass) { - if (!aggressive) return; - how = "prev"; - } - } - if (how == "prev") { - if (n) indentation = countColumn(getLine(doc, n-1).text, null, tabSize); - else indentation = 0; - } - else if (how == "add") indentation = curSpace + cm.options.indentUnit; - else if (how == "subtract") indentation = curSpace - cm.options.indentUnit; - indentation = Math.max(0, indentation); - - var indentString = "", pos = 0; - if (cm.options.indentWithTabs) - for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} - if (pos < indentation) indentString += spaceStr(indentation - pos); - - if (indentString != curSpaceString) - replaceRange(cm, indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length}, "input"); - line.stateAfter = null; - } - - function changeLine(cm, handle, op) { - var no = handle, line = handle, doc = cm.view.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(cm, dir, unit, visually) { - var doc = cm.view.doc, end = cm.view.sel.head, line = end.line, ch = end.ch; - var lineObj = getLine(doc, line); - function findNextLine() { - var l = line + dir; - if (l < 0 || l == doc.size) return 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 false; - } else ch = next; - return true; - } - if (unit == "char") moveOnce(); - else if (unit == "column") moveOnce(true); - else if (unit == "word") { - var sawWord = false; - for (;;) { - if (dir < 0) if (!moveOnce()) break; - if (isWordChar(lineObj.text.charAt(ch))) sawWord = true; - else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;} - if (dir > 0) if (!moveOnce()) break; - } - } - return skipAtomic(cm, {line: line, ch: ch}, dir, true); - } - - function findWordAt(line, pos) { - var start = pos.ch, end = pos.ch; - if (line) { - if (pos.after === false || end == line.length) --start; else ++end; - var startChar = line.charAt(start); - var check = isWordChar(startChar) ? isWordChar : - /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} : - function(ch) {return !/\s/.test(ch) && !isWordChar(ch);}; - while (start > 0 && check(line.charAt(start - 1))) --start; - while (end < line.length && check(line.charAt(end))) ++end; - } - return {from: {line: pos.line, ch: start}, to: {line: pos.line, ch: end}}; - } - - function selectLine(cm, line) { - extendSelection(cm, {line: line, ch: 0}, clipPos(cm.view.doc, {line: line + 1, ch: 0})); - } - - // PROTOTYPE - - // The publicly visible API. Note that operation(null, f) means - // 'wrap f in an operation, performed on its `this` parameter' - - CodeMirror.prototype = { - getValue: function(lineSep) { - var text = [], doc = this.view.doc; - doc.iter(0, doc.size, function(line) { text.push(line.text); }); - return text.join(lineSep || "\n"); - }, - - setValue: operation(null, function(code) { - var doc = this.view.doc, top = {line: 0, ch: 0}, lastLen = getLine(doc, doc.size-1).text.length; - updateDocInner(this, top, {line: doc.size - 1, ch: lastLen}, splitLines(code), top, top, "setValue"); - }), - - getSelection: function(lineSep) { return this.getRange(this.view.sel.from, this.view.sel.to, lineSep); }, - - replaceSelection: operation(null, function(code, collapse, origin) { - var sel = this.view.sel; - updateDoc(this, sel.from, sel.to, splitLines(code), collapse || "around", origin); - }), - - focus: function(){window.focus(); focusInput(this); onFocus(this); fastPoll(this);}, - - setOption: function(option, value) { - var options = this.options, old = options[option]; - if (options[option] == value && option != "mode") return; - options[option] = value; - if (optionHandlers.hasOwnProperty(option)) - operation(this, optionHandlers[option])(this, value, old); - }, - - getOption: function(option) {return this.options[option];}, - - getMode: function() {return this.view.mode;}, - - addKeyMap: function(map) { - this.view.keyMaps.push(map); - }, - - removeKeyMap: function(map) { - var maps = this.view.keyMaps; - for (var i = 0; i < maps.length; ++i) - if ((typeof map == "string" ? maps[i].name : maps[i]) == map) { - maps.splice(i, 1); - return true; - } - }, - - undo: operation(null, function() {unredoHelper(this, "undo");}), - redo: operation(null, function() {unredoHelper(this, "redo");}), - - indentLine: operation(null, function(n, dir, aggressive) { - if (typeof dir != "string") { - if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"; - else dir = dir ? "add" : "subtract"; - } - if (isLine(this.view.doc, n)) indentLine(this, n, dir, aggressive); - }), - - indentSelection: operation(null, function(how) { - var sel = this.view.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); - }), - - historySize: function() { - var hist = this.view.history; - return {undo: hist.done.length, redo: hist.undone.length}; - }, - - clearHistory: function() {this.view.history = makeHistory();}, - - markClean: function() { - this.view.history.dirtyCounter = 0; - this.view.history.lastOp = this.view.history.lastOrigin = null; - }, - - isClean: function () {return this.view.history.dirtyCounter == 0;}, - - getHistory: function() { - var hist = this.view.history; - function cp(arr) { - for (var i = 0, nw = [], nwelt; i < arr.length; ++i) { - var set = arr[i]; - nw.push({events: nwelt = [], fromBefore: set.fromBefore, toBefore: set.toBefore, - fromAfter: set.fromAfter, toAfter: set.toAfter}); - for (var j = 0, elt = set.events; j < elt.length; ++j) { - var old = [], cur = elt[j]; - nwelt.push({start: cur.start, added: cur.added, old: old}); - for (var k = 0; k < cur.old.length; ++k) old.push(hlText(cur.old[k])); - } - } - return nw; - } - return {done: cp(hist.done), undone: cp(hist.undone)}; - }, - - setHistory: function(histData) { - var hist = this.view.history = makeHistory(); - hist.done = histData.done; - hist.undone = histData.undone; - }, - - // Fetch the parser token for a given character. Useful for hacks - // that want to inspect the mode state (say, for completion). - getTokenAt: function(pos) { - var doc = this.view.doc; - pos = clipPos(doc, pos); - var state = getStateBefore(this, pos.line), mode = this.view.mode; - var line = getLine(doc, pos.line); - var stream = new StringStream(line.text, this.options.tabSize); - while (stream.pos < pos.ch && !stream.eol()) { - stream.start = stream.pos; - var style = mode.token(stream, state); - } - return {start: stream.start, - end: stream.pos, - string: stream.current(), - className: style || null, // Deprecated, use 'type' instead - type: style || null, - state: state}; - }, - - getStateAfter: function(line) { - var doc = this.view.doc; - line = clipLine(doc, line == null ? doc.size - 1: line); - return getStateBefore(this, line + 1); - }, - - cursorCoords: function(start, mode) { - var pos, sel = this.view.sel; - if (start == null) pos = sel.head; - else if (typeof start == "object") pos = clipPos(this.view.doc, start); - else pos = start ? sel.from : sel.to; - return cursorCoords(this, pos, mode || "page"); - }, - - charCoords: function(pos, mode) { - return charCoords(this, clipPos(this.view.doc, pos), mode || "page"); - }, - - coordsChar: function(coords) { - var off = this.display.lineSpace.getBoundingClientRect(); - return coordsChar(this, coords.left - off.left, coords.top - off.top); - }, - - defaultTextHeight: function() { return textHeight(this.display); }, - - markText: operation(null, function(from, to, options) { - return markText(this, clipPos(this.view.doc, from), clipPos(this.view.doc, to), - options, "range"); - }), - - setBookmark: operation(null, function(pos, widget) { - pos = clipPos(this.view.doc, pos); - return markText(this, pos, pos, widget ? {replacedWith: widget} : {}, "bookmark"); - }), - - findMarksAt: function(pos) { - var doc = this.view.doc; - pos = clipPos(doc, pos); - var markers = [], spans = getLine(doc, 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); - } - return markers; - }, - - 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 i = 0, cm = this, doc = cm.view.doc; - doc.iter(0, doc.size, function(line) { - if (line.gutterMarkers && line.gutterMarkers[gutterID]) { - line.gutterMarkers[gutterID] = null; - regChange(cm, i, i + 1); - if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null; - } - ++i; - }); - }), - - addLineClass: operation(null, function(handle, where, cls) { - return changeLine(this, handle, function(line) { - var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; - if (!line[prop]) line[prop] = cls; - else if (new RegExp("\\b" + cls + "\\b").test(line[prop])) return false; - else line[prop] += " " + cls; - return true; - }); - }), - - removeLineClass: operation(null, function(handle, where, cls) { - return changeLine(this, handle, function(line) { - var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; - var cur = line[prop]; - if (!cur) return false; - else if (cls == null) line[prop] = null; - else { - var upd = cur.replace(new RegExp("^" + cls + "\\b\\s*|\\s*\\b" + cls + "\\b"), ""); - if (upd == cur) return false; - line[prop] = upd || null; - } - return true; - }); - }), - - addLineWidget: operation(null, function(handle, node, options) { - var widget = options || {}; - widget.node = node; - if (widget.noHScroll) this.display.alignWidgets = true; - changeLine(this, handle, function(line) { - (line.widgets || (line.widgets = [])).push(widget); - widget.line = line; - return true; - }); - return widget; - }), - - removeLineWidget: operation(null, function(widget) { - var ws = widget.line.widgets, no = lineNo(widget.line); - if (no == null) return; - for (var i = 0; i < ws.length; ++i) if (ws[i] == widget) ws.splice(i--, 1); - regChange(this, no, no + 1); - }), - - lineInfo: function(line) { - if (typeof line == "number") { - if (!isLine(this.view.doc, line)) return null; - var n = line; - line = getLine(this.view.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.view.doc, pos)); - var top = pos.top, left = pos.left; - node.style.position = "absolute"; - display.sizer.appendChild(node); - if (vert == "over") top = pos.top; - else if (vert == "near") { - var vspace = Math.max(display.wrapper.clientHeight, this.view.doc.height), - hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth); - if (pos.bottom + node.offsetHeight > vspace && pos.top > node.offsetHeight) - top = pos.top - node.offsetHeight; - if (left + node.offsetWidth > hspace) - left = hspace - node.offsetWidth; - } - node.style.top = (top + paddingTop(display)) + "px"; - node.style.left = node.style.right = ""; - if (horiz == "right") { - left = display.sizer.clientWidth - node.offsetWidth; - node.style.right = "0px"; - } else { - if (horiz == "left") left = 0; - else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2; - node.style.left = left + "px"; - } - if (scroll) - scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight); - }, - - lineCount: function() {return this.view.doc.size;}, - - clipPos: function(pos) {return clipPos(this.view.doc, pos);}, - - getCursor: function(start) { - var sel = this.view.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.view.sel.from, this.view.sel.to);}, - - setCursor: operation(null, function(line, ch, extend) { - var pos = clipPos(this.view.doc, typeof line == "number" ? {line: line, ch: ch || 0} : line); - if (extend) extendSelection(this, pos); - else setSelection(this, pos, pos); - }), - - setSelection: operation(null, function(anchor, head) { - var doc = this.view.doc; - setSelection(this, clipPos(doc, anchor), clipPos(doc, head || anchor)); - }), - - extendSelection: operation(null, function(from, to) { - var doc = this.view.doc; - extendSelection(this, clipPos(doc, from), to && clipPos(doc, to)); - }), - - setExtending: function(val) {this.view.sel.extend = val;}, - - getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;}, - - getLineHandle: function(line) { - var doc = this.view.doc; - if (isLine(doc, line)) return getLine(doc, line); - }, - - getLineNumber: function(line) {return lineNo(line);}, - - setLine: operation(null, function(line, text) { - if (isLine(this.view.doc, line)) - replaceRange(this, text, {line: line, ch: 0}, {line: line, ch: getLine(this.view.doc, line).text.length}); - }), - - removeLine: operation(null, function(line) { - if (isLine(this.view.doc, line)) - replaceRange(this, "", {line: line, ch: 0}, clipPos(this.view.doc, {line: line+1, ch: 0})); - }), - - replaceRange: operation(null, function(code, from, to) { - var doc = this.view.doc; - from = clipPos(doc, from); - to = to ? clipPos(doc, to) : from; - return replaceRange(this, code, from, to); - }), - - getRange: function(from, to, lineSep) { - var doc = this.view.doc; - from = clipPos(doc, from); to = clipPos(doc, to); - var l1 = from.line, l2 = to.line; - if (l1 == l2) return getLine(doc, l1).text.slice(from.ch, to.ch); - var code = [getLine(doc, l1).text.slice(from.ch)]; - doc.iter(l1 + 1, l2, function(line) { code.push(line.text); }); - code.push(getLine(doc, l2).text.slice(0, to.ch)); - return code.join(lineSep || "\n"); - }, - - triggerOnKeyDown: operation(null, onKeyDown), - - execCommand: function(cmd) {return commands[cmd](this);}, - - // Stuff used by commands, probably not much use to outside code. - moveH: operation(null, function(dir, unit) { - var sel = this.view.sel, pos = dir < 0 ? sel.from : sel.to; - if (sel.shift || sel.extend || posEq(sel.from, sel.to)) pos = findPosH(this, dir, unit, true); - extendSelection(this, pos, pos, dir); - }), - - deleteH: operation(null, function(dir, unit) { - var sel = this.view.sel; - if (!posEq(sel.from, sel.to)) replaceRange(this, "", sel.from, sel.to, "delete"); - else replaceRange(this, "", sel.from, findPosH(this, dir, unit, false), "delete"); - this.curOp.userSelChange = true; - }), - - moveV: operation(null, function(dir, unit) { - var view = this.view, doc = view.doc, display = this.display; - var cur = view.sel.head, pos = cursorCoords(this, cur, "div"); - var x = pos.left, y; - if (view.goalColumn != null) x = view.goalColumn; - if (unit == "page") { - var pageSize = Math.min(display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); - y = pos.top + dir * pageSize; - } else if (unit == "line") { - y = dir > 0 ? pos.bottom + 3 : pos.top - 3; - } - do { - var target = coordsChar(this, x, y); - y += dir * 5; - } while (target.outside && (dir < 0 ? y > 0 : y < doc.height)); - - if (unit == "page") display.scrollbarV.scrollTop += charCoords(this, target, "div").top - pos.top; - extendSelection(this, target, target, dir); - view.goalColumn = x; - }), - - toggleOverwrite: function() { - if (this.view.overwrite = !this.view.overwrite) - this.display.cursor.className += " CodeMirror-overwrite"; - else - this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", ""); - }, - - posFromIndex: function(off) { - var lineNo = 0, ch, doc = this.view.doc; - doc.iter(0, doc.size, function(line) { - var sz = line.text.length + 1; - if (sz > off) { ch = off; return true; } - off -= sz; - ++lineNo; - }); - return clipPos(doc, {line: lineNo, ch: ch}); - }, - indexFromPos: function (coords) { - if (coords.line < 0 || coords.ch < 0) return 0; - var index = coords.ch; - this.view.doc.iter(0, coords.line, function (line) { - index += line.text.length + 1; - }); - return index; - }, - - scrollTo: function(x, y) { - if (x != null) this.display.scrollbarH.scrollLeft = this.display.scroller.scrollLeft = x; - if (y != null) this.display.scrollbarV.scrollTop = this.display.scroller.scrollTop = y; - updateDisplay(this, []); - }, - getScrollInfo: function() { - var scroller = this.display.scroller, co = scrollerCutOff; - return {left: scroller.scrollLeft, top: scroller.scrollTop, - height: scroller.scrollHeight - co, width: scroller.scrollWidth - co, - clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co}; - }, - - scrollIntoView: function(pos) { - if (typeof pos == "number") pos = {line: pos, ch: 0}; - pos = pos ? clipPos(this.view.doc, pos) : this.view.sel.head; - scrollPosIntoView(this, pos); - }, - - setSize: function(width, height) { - function interpret(val) { - return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; - } - if (width != null) this.display.wrapper.style.width = interpret(width); - if (height != null) this.display.wrapper.style.height = interpret(height); - this.refresh(); - }, - - on: function(type, f) {on(this, type, f);}, - off: function(type, f) {off(this, type, f);}, - - operation: function(f){return operation(this, f)();}, - - refresh: function() { - clearCaches(this); - if (this.display.scroller.scrollHeight > this.view.scrollTop) - this.display.scrollbarV.scrollTop = this.display.scroller.scrollTop = this.view.scrollTop; - updateDisplay(this, true); - }, - - getInputField: function(){return this.display.input;}, - getWrapperElement: function(){return this.display.wrapper;}, - getScrollerElement: function(){return this.display.scroller;}, - getGutterElement: function(){return this.display.gutters;} - }; - - // OPTION DEFAULTS - - var optionHandlers = CodeMirror.optionHandlers = {}; - - // The default configuration options. - var defaults = CodeMirror.defaults = {}; - - function option(name, deflt, handle, notOnInit) { - CodeMirror.defaults[name] = deflt; - if (handle) optionHandlers[name] = - notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle; - } - - var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}}; - - // These two are, on init, called from the constructor because they - // have to be initialized before the editor can start at all. - option("value", "", function(cm, val) {cm.setValue(val);}, true); - option("mode", null, loadMode, true); - - option("indentUnit", 2, loadMode, true); - option("indentWithTabs", false); - option("smartIndent", true); - option("tabSize", 4, function(cm) { - loadMode(cm); - clearCaches(cm); - updateDisplay(cm, true); - }, true); - option("electricChars", 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("lineNumbers", false, function(cm) { - setGuttersForLineNumbers(cm.options); - guttersChanged(cm); - }, true); - option("firstLineNumber", 1, guttersChanged, true); - option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true); - option("showCursorWhenSelecting", false, updateSelection, true); - - option("readOnly", false, function(cm, val) { - if (val == "nocursor") {onBlur(cm); cm.display.input.blur();} - else if (!val) resetInput(cm, true); - }); - option("dragDrop", true); - - option("cursorBlinkRate", 530); - option("cursorHeight", 1); - option("workTime", 100); - option("workDelay", 100); - option("flattenSpans", true); - option("pollInterval", 100); - option("undoDepth", 40); - option("viewportMargin", 10, function(cm){cm.refresh();}, true); - - option("tabindex", null, function(cm, val) { - cm.display.input.tabIndex = val || ""; - }); - option("autofocus", null); - - // MODE DEFINITION AND QUERYING - - // Known modes, by name and by MIME - var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; - - CodeMirror.defineMode = function(name, mode) { - if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; - if (arguments.length > 2) { - mode.dependencies = []; - for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]); - } - modes[name] = mode; - }; - - CodeMirror.defineMIME = function(mime, spec) { - mimeModes[mime] = spec; - }; - - CodeMirror.resolveMode = function(spec) { - if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) - spec = mimeModes[spec]; - else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) - return CodeMirror.resolveMode("application/xml"); - if (typeof spec == "string") return {name: spec}; - else return spec || {name: "null"}; - }; - - CodeMirror.getMode = function(options, spec) { - 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/plain", "null"); - - var modeExtensions = CodeMirror.modeExtensions = {}; - CodeMirror.extendMode = function(mode, properties) { - var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); - for (var prop in properties) if (properties.hasOwnProperty(prop)) - exts[prop] = properties[prop]; - }; - - // EXTENSIONS - - CodeMirror.defineExtension = function(name, func) { - CodeMirror.prototype[name] = func; - }; - - CodeMirror.defineOption = option; - - var initHooks = []; - CodeMirror.defineInitHook = function(f) {initHooks.push(f);}; - - // MODE STATE HANDLING - - // Utility functions for working with state. Exported because modes - // sometimes need to do this. - function copyState(mode, state) { - if (state === true) return state; - if (mode.copyState) return mode.copyState(state); - var nstate = {}; - for (var n in state) { - var val = state[n]; - if (val instanceof Array) val = val.concat([]); - nstate[n] = val; - } - return nstate; - } - CodeMirror.copyState = copyState; - - function startState(mode, a1, a2) { - return mode.startState ? mode.startState(a1, a2) : true; - } - CodeMirror.startState = startState; - - CodeMirror.innerMode = function(mode, state) { - while (mode.innerMode) { - var info = mode.innerMode(state); - state = info.state; - mode = info.mode; - } - return info || {mode: mode, state: state}; - }; - - // STANDARD COMMANDS - - var commands = CodeMirror.commands = { - selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});}, - 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, {line: from.line + 1, ch: 0}, "delete"); - else cm.replaceRange("", from, sel ? to : {line: from.line}, "delete"); - }, - deleteLine: function(cm) { - var l = cm.getCursor().line; - cm.replaceRange("", {line: l, ch: 0}, {line: l}, "delete"); - }, - undo: function(cm) {cm.undo();}, - redo: function(cm) {cm.redo();}, - goDocStart: function(cm) {cm.extendSelection({line: 0, ch: 0});}, - goDocEnd: function(cm) {cm.extendSelection({line: cm.lineCount() - 1});}, - 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({line: start.line, ch: inWS ? 0 : firstNonWS}); - } else cm.extendSelection(start); - }, - goLineEnd: function(cm) { - cm.extendSelection(lineEnd(cm, cm.getCursor().line)); - }, - goLineUp: function(cm) {cm.moveV(-1, "line");}, - goLineDown: function(cm) {cm.moveV(1, "line");}, - goPageUp: function(cm) {cm.moveV(-1, "page");}, - goPageDown: function(cm) {cm.moveV(1, "page");}, - goCharLeft: function(cm) {cm.moveH(-1, "char");}, - goCharRight: function(cm) {cm.moveH(1, "char");}, - goColumnLeft: function(cm) {cm.moveH(-1, "column");}, - goColumnRight: function(cm) {cm.moveH(1, "column");}, - goWordLeft: function(cm) {cm.moveH(-1, "word");}, - goWordRight: function(cm) {cm.moveH(1, "word");}, - delCharBefore: function(cm) {cm.deleteH(-1, "char");}, - delCharAfter: function(cm) {cm.deleteH(1, "char");}, - delWordBefore: function(cm) {cm.deleteH(-1, "word");}, - delWordAfter: function(cm) {cm.deleteH(1, "word");}, - indentAuto: function(cm) {cm.indentSelection("smart");}, - indentMore: function(cm) {cm.indentSelection("add");}, - indentLess: function(cm) {cm.indentSelection("subtract");}, - insertTab: function(cm) {cm.replaceSelection("\t", "end", "input");}, - defaultTab: function(cm) { - if (cm.somethingSelected()) cm.indentSelection("add"); - else cm.replaceSelection("\t", "end", "input"); - }, - transposeChars: function(cm) { - var cur = cm.getCursor(), line = cm.getLine(cur.line); - if (cur.ch > 0 && cur.ch < line.length - 1) - cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1), - {line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1}); - }, - newlineAndIndent: function(cm) { - operation(cm, function() { - cm.replaceSelection("\n", "end", "input"); - cm.indentLine(cm.getCursor().line, null, true); - })(); - }, - toggleOverwrite: function(cm) {cm.toggleOverwrite();} - }; - - // STANDARD KEYMAPS - - var keyMap = CodeMirror.keyMap = {}; - keyMap.basic = { - "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", - "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", - "Delete": "delCharAfter", "Backspace": "delCharBefore", "Tab": "defaultTab", "Shift-Tab": "indentAuto", - "Enter": "newlineAndIndent", "Insert": "toggleOverwrite" - }; - // Note that the save and find-related commands aren't defined by - // default. Unknown commands are simply ignored. - keyMap.pcDefault = { - "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", - "Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd", - "Ctrl-Left": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", - "Ctrl-Backspace": "delWordBefore", "Ctrl-Delete": "delWordAfter", "Ctrl-S": "save", "Ctrl-F": "find", - "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", - "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", - fallthrough: "basic" - }; - keyMap.macDefault = { - "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", - "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goWordLeft", - "Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordBefore", - "Ctrl-Alt-Backspace": "delWordAfter", "Alt-Delete": "delWordAfter", "Cmd-S": "save", "Cmd-F": "find", - "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", - "Cmd-[": "indentLess", "Cmd-]": "indentMore", - fallthrough: ["basic", "emacsy"] - }; - keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; - keyMap.emacsy = { - "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", - "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", - "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", - "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars" - }; - - // KEYMAP DISPATCH - - function getKeyMap(val) { - if (typeof val == "string") return keyMap[val]; - else return val; - } - - function lookupKey(name, maps, handle, stop) { - function lookup(map) { - map = getKeyMap(map); - var found = map[name]; - if (found === false) { - if (stop) stop(); - return true; - } - if (found != null && handle(found)) return true; - if (map.nofallthrough) { - if (stop) stop(); - return true; - } - 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) { - if (lookup(fallthrough[i])) return true; - } - return false; - } - - for (var i = 0; i < maps.length; ++i) - if (lookup(maps[i])) return true; - } - function isModifierKey(event) { - var name = keyNames[e_prop(event, "keyCode")]; - return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; - } - CodeMirror.isModifierKey = isModifierKey; - - // FROMTEXTAREA - - CodeMirror.fromTextArea = function(textarea, options) { - if (!options) options = {}; - options.value = textarea.value; - if (!options.tabindex && textarea.tabindex) - options.tabindex = textarea.tabindex; - // Set autofocus to true if this textarea is focused, or if it has - // autofocus and no other element is focused. - if (options.autofocus == null) { - var hasFocus = document.body; - // doc.activeElement occasionally throws on IE - try { hasFocus = document.activeElement; } catch(e) {} - options.autofocus = hasFocus == textarea || - textarea.getAttribute("autofocus") != null && hasFocus == document.body; - } - - function save() {textarea.value = cm.getValue();} - if (textarea.form) { - // Deplorable hack to make the submit method do the right thing. - on(textarea.form, "submit", save); - var form = textarea.form, realSubmit = form.submit; - try { - form.submit = function wrappedSubmit() { - save(); - form.submit = realSubmit; - form.submit(); - form.submit = wrappedSubmit; - }; - } catch(e) {} - } - - textarea.style.display = "none"; - var cm = CodeMirror(function(node) { - textarea.parentNode.insertBefore(node, textarea.nextSibling); - }, options); - cm.save = save; - cm.getTextArea = function() { return textarea; }; - cm.toTextArea = function() { - save(); - textarea.parentNode.removeChild(cm.getWrapperElement()); - textarea.style.display = ""; - if (textarea.form) { - off(textarea.form, "submit", save); - if (typeof textarea.form.submit == "function") - textarea.form.submit = realSubmit; - } - }; - return cm; - }; - - // STRING STREAM - - // Fed to the mode parsers, provides helper functions to make - // parsers more succinct. - - // The character stream used by a mode's parser. - function StringStream(string, tabSize) { - this.pos = this.start = 0; - this.string = string; - this.tabSize = tabSize || 8; - } - - StringStream.prototype = { - eol: function() {return this.pos >= this.string.length;}, - sol: function() {return this.pos == 0;}, - peek: function() {return this.string.charAt(this.pos) || undefined;}, - next: function() { - if (this.pos < this.string.length) - return this.string.charAt(this.pos++); - }, - eat: function(match) { - var ch = this.string.charAt(this.pos); - if (typeof match == "string") var ok = ch == match; - else var ok = ch && (match.test ? match.test(ch) : match(ch)); - if (ok) {++this.pos; return ch;} - }, - eatWhile: function(match) { - var start = this.pos; - while (this.eat(match)){} - return this.pos > start; - }, - eatSpace: function() { - var start = this.pos; - while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; - return this.pos > start; - }, - skipToEnd: function() {this.pos = this.string.length;}, - skipTo: function(ch) { - var found = this.string.indexOf(ch, this.pos); - if (found > -1) {this.pos = found; return true;} - }, - backUp: function(n) {this.pos -= n;}, - column: function() {return countColumn(this.string, this.start, this.tabSize);}, - indentation: function() {return countColumn(this.string, null, this.tabSize);}, - match: function(pattern, consume, caseInsensitive) { - if (typeof pattern == "string") { - var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;}; - if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) { - if (consume !== false) this.pos += pattern.length; - return true; - } - } else { - var match = this.string.slice(this.pos).match(pattern); - if (match && match.index > 0) return null; - if (match && consume !== false) this.pos += match[0].length; - return match; - } - }, - current: function(){return this.string.slice(this.start, this.pos);} - }; - CodeMirror.StringStream = StringStream; - - // TEXTMARKERS - - function TextMarker(cm, type) { - this.lines = []; - this.type = type; - this.cm = cm; - } - - TextMarker.prototype.clear = function() { - if (this.explicitlyCleared) return; - startOperation(this.cm); - var min = null, max = null; - for (var i = 0; i < this.lines.length; ++i) { - var line = this.lines[i]; - var span = getMarkedSpanFor(line.markedSpans, this); - if (span.to != null) max = lineNo(line); - line.markedSpans = removeMarkedSpan(line.markedSpans, span); - if (span.from != null) - min = lineNo(line); - else if (this.collapsed && !lineIsHidden(line)) - updateLineHeight(line, textHeight(this.cm.display)); - } - if (min != null) regChange(this.cm, min, max + 1); - this.lines.length = 0; - this.explicitlyCleared = true; - if (this.collapsed && this.cm.view.cantEdit) { - this.cm.view.cantEdit = false; - reCheckSelection(this.cm); - } - endOperation(this.cm); - signalLater(this.cm, this, "clear"); - }; - - TextMarker.prototype.find = function() { - var from, to; - for (var i = 0; i < this.lines.length; ++i) { - var line = this.lines[i]; - var span = getMarkedSpanFor(line.markedSpans, this); - if (span.from != null || span.to != null) { - var found = lineNo(line); - if (span.from != null) from = {line: found, ch: span.from}; - if (span.to != null) to = {line: found, ch: span.to}; - } - } - if (this.type == "bookmark") return from; - return from && {from: from, to: to}; - }; - - function markText(cm, from, to, options, type) { - var doc = cm.view.doc; - var marker = new TextMarker(cm, type); - if (type == "range" && !posLess(from, to)) return marker; - if (options) for (var opt in options) if (options.hasOwnProperty(opt)) - marker[opt] = options[opt]; - if (marker.replacedWith) { - marker.collapsed = true; - marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget"); - } - if (marker.collapsed) sawCollapsedSpans = true; - - var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd; - doc.iter(curLine, to.line + 1, function(line) { - 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); - if (marker.collapsed && curLine == from.line && lineIsHidden(line)) - updateLineHeight(line, 0); - ++curLine; - }); - - if (marker.readOnly) { - sawReadOnlySpans = true; - if (cm.view.history.done.length || cm.view.history.undone.length) - cm.clearHistory(); - } - if (marker.collapsed) { - if (collapsedAtStart != collapsedAtEnd) - throw new Error("Inserting collapsed marker overlapping an existing one"); - marker.size = size; - marker.atomic = true; - } - if (marker.className || marker.startStyle || marker.endStyle || marker.collapsed) - regChange(cm, from.line, to.line + 1); - if (marker.atomic) reCheckSelection(cm); - return marker; - } - - // 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.lines.push(line); - } - - function markedSpansBefore(old, startCh) { - if (old) for (var i = 0, nw; i < old.length; ++i) { - var span = old[i], marker = span.marker; - var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); - if (startsBefore || marker.type == "bookmark" && span.from == startCh) { - 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, startCh, endCh) { - 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 && span.from != startCh) { - 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 updateMarkedSpans(oldFirst, oldLast, startCh, endCh, newText) { - if (!oldFirst && !oldLast) return newText; - // Get the spans that 'stick out' on both sides - var first = markedSpansBefore(oldFirst, startCh); - var last = markedSpansAfter(oldLast, startCh, endCh); - - // Next, merge those two ends - var sameLine = newText.length == 1, offset = lst(newText).length + (sameLine ? startCh : 0); - if (first) { - // Fix up .to properties of first - for (var i = 0; i < first.length; ++i) { - var span = first[i]; - if (span.to == null) { - var found = getMarkedSpanFor(last, span.marker); - if (!found) span.to = startCh; - else if (sameLine) span.to = found.to == null ? null : found.to + offset; - } - } - } - if (last) { - // Fix up .from in last (or move them into first in case of sameLine) - for (var i = 0; i < last.length; ++i) { - var span = last[i]; - if (span.to != null) span.to += offset; - if (span.from == null) { - var found = getMarkedSpanFor(first, span.marker); - if (!found) { - span.from = offset; - if (sameLine) (first || (first = [])).push(span); - } - } else { - span.from += offset; - if (sameLine) (first || (first = [])).push(span); - } - } - } - - var newMarkers = [newHL(newText[0], first)]; - if (!sameLine) { - // Fill gap with whole-line-spans - var gap = newText.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(newHL(newText[i+1], gapMarkers)); - newMarkers.push(newHL(lst(newText), last)); - } - return newMarkers; - } - - 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 m = markers[i].find(); - for (var j = 0; j < parts.length; ++j) { - var p = parts[j]; - if (!posLess(m.from, p.to) || posLess(m.to, p.from)) continue; - var newParts = [j, 1]; - if (posLess(p.from, m.from)) newParts.push({from: p.from, to: m.from}); - if (posLess(m.to, p.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(line) { - var sps = sawCollapsedSpans && line.markedSpans; - if (sps) for (var sp, i = 0; i < sps.length; ++i) { - sp = sps[i]; - if (!sp.marker.collapsed) continue; - if (sp.from == null) return true; - if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(line, sp)) - return true; - } - } - window.lineIsHidden = lineIsHidden; - function lineIsHiddenInner(line, span) { - if (span.to == null || span.marker.inclusiveRight && span.to == line.text.length) - return true; - for (var sp, i = 0; i < line.markedSpans.length; ++i) { - sp = line.markedSpans[i]; - if (sp.marker.collapsed && sp.from == span.to && - (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && - lineIsHiddenInner(line, sp)) return true; - } - } - - // hl stands for history-line, a data structure that can be either a - // string (line without markers) or a {text, markedSpans} object. - function hlText(val) { return typeof val == "string" ? val : val.text; } - function hlSpans(val) { - if (typeof val == "string") return null; - var spans = val.markedSpans, out = null; - for (var i = 0; i < spans.length; ++i) { - if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); } - else if (out) out.push(spans[i]); - } - return !out ? spans : out.length ? out : null; - } - function newHL(text, spans) { return spans ? {text: text, markedSpans: spans} : text; } - - function detachMarkedSpans(line) { - var spans = line.markedSpans; - if (!spans) return; - for (var i = 0; i < spans.length; ++i) { - var lines = spans[i].marker.lines; - var ix = indexOf(lines, line); - lines.splice(ix, 1); - } - line.markedSpans = null; - } - - function attachMarkedSpans(line, spans) { - if (!spans) return; - for (var i = 0; i < spans.length; ++i) - spans[i].marker.lines.push(line); - line.markedSpans = spans; - } - - // LINE DATA STRUCTURE - - // Line objects. These hold state related to a line, including - // highlighting info (the styles array). - function makeLine(text, markedSpans, height) { - var line = {text: text, height: height}; - attachMarkedSpans(line, markedSpans); - if (lineIsHidden(line)) line.height = 0; - return line; - } - - function updateLine(cm, line, text, markedSpans) { - line.text = text; - line.stateAfter = line.styles = null; - if (line.order != null) line.order = null; - detachMarkedSpans(line); - attachMarkedSpans(line, markedSpans); - if (lineIsHidden(line)) line.height = 0; - else if (!line.height) line.height = textHeight(cm.display); - signalLater(cm, line, "change"); - } - - function cleanUpLine(line) { - line.parent = null; - detachMarkedSpans(line); - } - - // Run the given mode's parser over a line, update the styles - // array, which contains alternating fragments of text and CSS - // classes. - function highlightLine(cm, line, state) { - var mode = cm.view.mode, flattenSpans = cm.options.flattenSpans; - var changed = !line.styles, pos = 0, curText = "", curStyle = null; - var stream = new StringStream(line.text, cm.options.tabSize), st = line.styles || (line.styles = []); - if (line.text == "" && mode.blankLine) mode.blankLine(state); - while (!stream.eol()) { - var style = mode.token(stream, state), substr = stream.current(); - stream.start = stream.pos; - if (!flattenSpans || curStyle != style) { - if (curText) { - changed = changed || pos >= st.length || curText != st[pos] || curStyle != st[pos+1]; - st[pos++] = curText; st[pos++] = curStyle; - } - curText = substr; curStyle = style; - } else curText = curText + substr; - // Give up when line is ridiculously long - if (stream.pos > 5000) break; - } - if (curText) { - changed = changed || pos >= st.length || curText != st[pos] || curStyle != st[pos+1]; - st[pos++] = curText; st[pos++] = curStyle; - } - if (stream.pos > 5000) { st[pos++] = line.text.slice(stream.pos); st[pos++] = null; } - if (pos != st.length) { st.length = pos; changed = true; } - return changed; - } - - // Lightweight form of highlight -- proceed over this line and - // update state, but don't save a style array. - function processLine(cm, line, state) { - var mode = cm.view.mode; - var stream = new StringStream(line.text, cm.options.tabSize); - if (line.text == "" && mode.blankLine) mode.blankLine(state); - while (!stream.eol() && stream.pos <= 5000) { - mode.token(stream, state); - stream.start = stream.pos; - } - } - - var styleToClassCache = {}; - function styleToClass(style) { - if (!style) return null; - return styleToClassCache[style] || - (styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-")); - } - - function lineContent(cm, realLine, measure) { - var merged, line = realLine, lineBefore, sawBefore, simple = true; - while (merged = collapsedSpanAtStart(line)) { - simple = false; - line = getLine(cm.view.doc, merged.find().from.line); - if (!lineBefore) lineBefore = line; - } - - var builder = {pre: elt("pre"), col: 0, pos: 0, display: !measure, - measure: null, addedOne: false, cm: cm}; - if (line.textClass) builder.pre.className = line.textClass; - - do { - if (!line.styles) - highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line))); - builder.measure = line == realLine && measure; - builder.pos = 0; - builder.addToken = builder.measure ? buildTokenMeasure : buildToken; - if (measure && sawBefore && line != realLine && !builder.addedOne) { - measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure)); - builder.addedOne = true; - } - var next = insertLineContent(line, builder); - sawBefore = line == lineBefore; - if (next) { - line = getLine(cm.view.doc, next.to.line); - simple = false; - } - } while (next); - - if (measure && !builder.addedOne) - measure[0] = builder.pre.appendChild(simple ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure)); - if (!builder.pre.firstChild && !lineIsHidden(realLine)) - builder.pre.appendChild(document.createTextNode("\u00a0")); - - return builder.pre; - } - - var tokenSpecialChars = /[\t\u0000-\u0019\u200b\u2028\u2029\uFEFF]/g; - function buildToken(builder, text, style, startStyle, endStyle) { - if (!text) return; - if (!tokenSpecialChars.test(text)) { - builder.col += text.length; - var content = document.createTextNode(text); - } else { - var content = document.createDocumentFragment(), pos = 0; - while (true) { - tokenSpecialChars.lastIndex = pos; - var m = tokenSpecialChars.exec(text); - var skipped = m ? m.index - pos : text.length - pos; - if (skipped) { - content.appendChild(document.createTextNode(text.slice(pos, pos + skipped))); - builder.col += skipped; - } - if (!m) break; - pos += skipped + 1; - if (m[0] == "\t") { - var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; - content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); - builder.col += tabWidth; - } else { - var token = elt("span", "\u2022", "cm-invalidchar"); - token.title = "\\u" + m[0].charCodeAt(0).toString(16); - content.appendChild(token); - builder.col += 1; - } - } - } - if (style || startStyle || endStyle || builder.measure) { - var fullStyle = style || ""; - if (startStyle) fullStyle += startStyle; - if (endStyle) fullStyle += endStyle; - return builder.pre.appendChild(elt("span", [content], fullStyle)); - } - builder.pre.appendChild(content); - } - - function buildTokenMeasure(builder, text, style, startStyle, endStyle) { - for (var i = 0; i < text.length; ++i) { - if (i && i < text.length - 1 && - builder.cm.options.lineWrapping && - spanAffectsWrapping.test(text.slice(i - 1, i + 1))) - builder.pre.appendChild(elt("wbr")); - builder.measure[builder.pos++] = - buildToken(builder, text.charAt(i), style, - i == 0 && startStyle, i == text.length - 1 && endStyle); - } - if (text.length) builder.addedOne = true; - } - - function buildCollapsedSpan(builder, size, widget) { - if (widget) { - if (!builder.display) widget = widget.cloneNode(true); - builder.pre.appendChild(widget); - if (builder.measure && size) { - builder.measure[builder.pos] = widget; - builder.addedOne = true; - } - } - builder.pos += size; - } - - // Outputs a number of spans to make up a line, taking highlighting - // and marked text into account. - function insertLineContent(line, builder) { - var st = line.styles, spans = line.markedSpans; - if (!spans) { - for (var i = 0; i < st.length; i+=2) - builder.addToken(builder, st[i], styleToClass(st[i+1])); - return; - } - - var allText = line.text, len = allText.length; - var pos = 0, i = 0, text = "", style; - var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed; - for (;;) { - if (nextChange == pos) { // Update current marker set - spanStyle = spanEndStyle = spanStartStyle = ""; - collapsed = null; nextChange = Infinity; - var foundBookmark = null; - for (var j = 0; j < spans.length; ++j) { - var sp = spans[j], m = sp.marker; - if (sp.from <= pos && (sp.to == null || sp.to > pos)) { - if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; } - if (m.className) spanStyle += " " + m.className; - if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle; - if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle; - if (m.collapsed && (!collapsed || collapsed.marker.width < m.width)) - collapsed = sp; - } else if (sp.from > pos && nextChange > sp.from) { - nextChange = sp.from; - } - if (m.type == "bookmark" && sp.from == pos && m.replacedWith) - foundBookmark = m.replacedWith; - } - if (collapsed && (collapsed.from || 0) == pos) { - buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos, - collapsed.from != null && collapsed.marker.replacedWith); - if (collapsed.to == null) return collapsed.marker.find(); - } - if (foundBookmark && !collapsed) buildCollapsedSpan(builder, 0, foundBookmark); - } - if (pos >= len) break; - - var upto = Math.min(len, nextChange); - while (true) { - if (text) { - var end = pos + text.length; - if (!collapsed) { - var tokenText = end > upto ? text.slice(0, upto - pos) : text; - builder.addToken(builder, tokenText, style + spanStyle, - spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : ""); - } - if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} - pos = end; - spanStartStyle = ""; - } - text = st[i++]; style = styleToClass(st[i++]); - } - } - } - - // DOCUMENT DATA STRUCTURE - - 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; }, - remove: function(at, n, cm) { - for (var i = at, e = at + n; i < e; ++i) { - var line = this.lines[i]; - this.height -= line.height; - cleanUpLine(line); - signalLater(cm, line, "delete"); - } - this.lines.splice(at, n); - }, - collapse: function(lines) { - lines.splice.apply(lines, [lines.length, 0].concat(this.lines)); - }, - insertHeight: 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; }, - remove: function(at, n, callbacks) { - 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.remove(at, rm, callbacks); - 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); - }, - insert: function(at, lines) { - var height = 0; - for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height; - this.insertHeight(at, lines, height); - }, - insertHeight: 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.insertHeight(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(); - }, - iter: function(from, to, op) { this.iterN(from, to - from, op); }, - 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; - } - } - }; - - // LINE UTILITIES - - function getLine(chunk, n) { - 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 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; - } - - function lineAtHeight(chunk, h) { - var n = 0; - 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.view.doc, lineObj); - - var h = 0, chunk = lineObj.parent; - for (var i = 0; i < chunk.lines.length; ++i) { - var line = chunk.lines[i]; - if (line == lineObj) break; - else h += line.height; - } - for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { - for (var i = 0; i < p.children.length; ++i) { - var cur = p.children[i]; - if (cur == chunk) break; - else h += cur.height; - } - } - return h; - } - - function getOrder(line) { - var order = line.order; - if (order == null) order = line.order = bidiOrdering(line.text); - return order; - } - - // HISTORY - - function makeHistory() { - return { - // Arrays of history events. Doing something adds an event to - // done and clears undo. Undoing moves events from done to - // undone, redoing moves them in the other direction. - done: [], undone: [], - // Used to track when changes can be merged into a single undo - // event - lastTime: 0, lastOp: null, lastOrigin: null, - // Used by the isClean() method - dirtyCounter: 0 - }; - } - - function addChange(cm, start, added, old, origin, fromBefore, toBefore, fromAfter, toAfter) { - var history = cm.view.history; - history.undone.length = 0; - var time = +new Date, cur = lst(history.done); - - if (cur && - (history.lastOp == cm.curOp.id || - history.lastOrigin == origin && (origin == "input" || origin == "delete") && - history.lastTime > time - 600)) { - // Merge this change into the last event - var last = lst(cur.events); - if (last.start > start + old.length || last.start + last.added < start) { - // Doesn't intersect with last sub-event, add new sub-event - cur.events.push({start: start, added: added, old: old}); - } else { - // Patch up the last sub-event - var startBefore = Math.max(0, last.start - start), - endAfter = Math.max(0, (start + old.length) - (last.start + last.added)); - for (var i = startBefore; i > 0; --i) last.old.unshift(old[i - 1]); - for (var i = endAfter; i > 0; --i) last.old.push(old[old.length - i]); - if (startBefore) last.start = start; - last.added += added - (old.length - startBefore - endAfter); - } - cur.fromAfter = fromAfter; cur.toAfter = toAfter; - } else { - // Can not be merged, start a new event. - cur = {events: [{start: start, added: added, old: old}], - fromBefore: fromBefore, toBefore: toBefore, fromAfter: fromAfter, toAfter: toAfter}; - history.done.push(cur); - while (history.done.length > cm.options.undoDepth) - history.done.shift(); - if (history.dirtyCounter < 0) - // The user has made a change after undoing past the last clean state. - // We can never get back to a clean state now until markClean() is called. - history.dirtyCounter = NaN; - else - history.dirtyCounter++; - } - history.lastTime = time; - history.lastOp = cm.curOp.id; - history.lastOrigin = origin; - } - - // EVENT OPERATORS - - function stopMethod() {e_stop(this);} - // Ensure an event has a stop method. - function addStop(event) { - if (!event.stop) event.stop = stopMethod; - return event; - } - - function e_preventDefault(e) { - if (e.preventDefault) e.preventDefault(); - else e.returnValue = false; - } - function e_stopPropagation(e) { - if (e.stopPropagation) e.stopPropagation(); - else e.cancelBubble = true; - } - function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);} - CodeMirror.e_stop = e_stop; - CodeMirror.e_preventDefault = e_preventDefault; - CodeMirror.e_stopPropagation = e_stopPropagation; - - function e_target(e) {return e.target || e.srcElement;} - function e_button(e) { - var b = e.which; - if (b == null) { - if (e.button & 1) b = 1; - else if (e.button & 2) b = 3; - else if (e.button & 4) b = 2; - } - if (mac && e.ctrlKey && b == 1) b = 3; - return b; - } - - // Allow 3rd-party code to override event properties by adding an override - // object to an event object. - function e_prop(e, prop) { - var overridden = e.override && e.override.hasOwnProperty(prop); - return overridden ? e.override[prop] : e[prop]; - } - - // 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); - } - - function signalLater(cm, emitter, type /*, values...*/) { - var arr = emitter._handlers && emitter._handlers[type]; - if (!arr) return; - var args = Array.prototype.slice.call(arguments, 3), flist = cm.curOp && cm.curOp.delayedCallbacks; - function bnd(f) {return function(){f.apply(null, args);};}; - for (var i = 0; i < arr.length; ++i) - if (flist) flist.push(bnd(arr[i])); - else arr[i].apply(null, args); - } - - function hasHandler(emitter, type) { - var arr = emitter._handlers && emitter._handlers[type]; - return arr && arr.length > 0; - } - - CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal; - - // MISC UTILITIES - - // Number of pixels added to scroller and sizer to hide scrollbar - var scrollerCutOff = 30; - - // Returned or thrown by various protocols to signal 'I'm not - // handling this'. - var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; - - function Delayed() {this.id = null;} - Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}}; - - // Counts the column offset in a string, taking tabs into account. - // Used mostly to find indentation. - function countColumn(string, end, tabSize) { - if (end == null) { - end = string.search(/[^\s\u00a0]/); - if (end == -1) end = string.length; - } - for (var i = 0, n = 0; i < end; ++i) { - if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); - else ++n; - } - return n; - } - CodeMirror.countColumn = countColumn; - - var spaceStrs = [""]; - function spaceStr(n) { - while (spaceStrs.length <= n) - spaceStrs.push(lst(spaceStrs) + " "); - return spaceStrs[n]; - } - - function lst(arr) { return arr[arr.length-1]; } - - function selectInput(node) { - if (ios) { // Mobile Safari apparently has a bug where select() is broken. - node.selectionStart = 0; - node.selectionEnd = node.value.length; - } else node.select(); - } - - function indexOf(collection, elt) { - if (collection.indexOf) return collection.indexOf(elt); - for (var i = 0, e = collection.length; i < e; ++i) - if (collection[i] == elt) return i; - return -1; - } - - function emptyArray(size) { - for (var a = [], i = 0; i < size; ++i) a.push(undefined); - return a; - } - - function bind(f) { - var args = Array.prototype.slice.call(arguments, 1); - return function(){return f.apply(null, args);}; - } - - var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc]/; - function isWordChar(ch) { - return /\w/.test(ch) || ch > "\x80" && - (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); - } - - function isEmpty(obj) { - var c = 0; - for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) ++c; - return !c; - } - - var isExtendingChar = /[\u0300-\u036F\u0483-\u0487\u0488-\u0489\u0591-\u05BD\u05BF\u05C1-\u05C2\u05C4-\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7-\u06E8\u06EA-\u06ED\uA66F\uA670-\uA672\uA674-\uA67D\uA69F]/; - - // 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) { - e.innerHTML = ""; - 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; - } - - // FEATURE DETECTION - - // Detect drag-and-drop - var dragAndDrop = function() { - // There is *some* kind of drag-and-drop support in IE6-8, but I - // couldn't get it to work yet. - if (ie_lt9) return false; - var div = elt('div'); - return "draggable" in div || "dragDrop" in div; - }(); - - // For a reason I have yet to figure out, some browsers disallow - // word wrapping between certain characters *only* if a new inline - // element is started between them. This makes it hard to reliably - // measure the position of things, since that requires inserting an - // extra span. This terribly fragile set of regexps matches the - // character combinations that suffer from this phenomenon on the - // various browsers. - var spanAffectsWrapping = /^$/; // Won't match any two-character string - if (gecko) spanAffectsWrapping = /$'/; - else if (safari) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/; - else if (chrome) spanAffectsWrapping = /\-[^ \-\.?]|\?[^ \-\.?\]\}:;!'\"\),\/]|[\.!\"#&%\)*+,:;=>\]|\}~][\(\{\[<]|\$'/; - - var knownScrollbarWidth; - function scrollbarWidth(measure) { - if (knownScrollbarWidth != null) return knownScrollbarWidth; - var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll"); - removeChildrenAndAdd(measure, test); - if (test.offsetWidth) - knownScrollbarWidth = test.offsetHeight - test.clientHeight; - return knownScrollbarWidth || 0; - } - - var zwspSupported; - function zeroWidthElement(measure) { - if (zwspSupported == null) { - var test = elt("span", "\u200b"); - removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); - if (measure.firstChild.offsetHeight != 0) - zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8; - } - if (zwspSupported) return elt("span", "\u200b"); - else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); - } - - // See if "".split is the broken IE version, if so, provide an - // alternative way to split lines. - var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) { - var pos = 0, result = [], l = string.length; - while (pos <= l) { - var nl = string.indexOf("\n", pos); - if (nl == -1) nl = string.length; - var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); - var rt = line.indexOf("\r"); - if (rt != -1) { - result.push(line.slice(0, rt)); - pos += rt + 1; - } else { - result.push(line); - pos = nl + 1; - } - } - return result; - } : function(string){return string.split(/\r\n?|\n/);}; - CodeMirror.splitLines = splitLines; - - var hasSelection = window.getSelection ? function(te) { - try { return te.selectionStart != te.selectionEnd; } - catch(e) { return false; } - } : function(te) { - try {var range = te.ownerDocument.selection.createRange();} - catch(e) {} - if (!range || range.parentElement() != te) return false; - return range.compareEndPoints("StartToEnd", range) != 0; - }; - - var hasCopyEvent = (function() { - var e = elt("div"); - if ("oncopy" in e) return true; - e.setAttribute("oncopy", "return;"); - return typeof e.oncopy == 'function'; - })(); - - // KEY NAMING - - var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", - 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", - 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", - 46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete", - 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", - 221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home", - 63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"}; - CodeMirror.keyNames = keyNames; - (function() { - // Number keys - for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i); - // Alphabetic keys - for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i); - // Function keys - for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i; - })(); - - // BIDI HELPERS - - function iterateBidiSections(order, from, to, f) { - if (!order) return f(from, to, "ltr"); - for (var i = 0; i < order.length; ++i) { - var part = order[i]; - if (part.from < to && part.to > from) - f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr"); - } - } - - function bidiLeft(part) { return part.level % 2 ? part.to : part.from; } - function bidiRight(part) { return part.level % 2 ? part.from : part.to; } - - function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; } - function lineRight(line) { - var order = getOrder(line); - if (!order) return line.text.length; - return bidiRight(lst(order)); - } - - function lineStart(cm, lineN) { - var line = getLine(cm.view.doc, lineN); - var visual = visualLine(cm.view.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 {line: lineN, ch: ch}; - } - function lineEnd(cm, lineNo) { - var merged, line; - while (merged = collapsedSpanAtEnd(line = getLine(cm.view.doc, lineNo))) - lineNo = merged.find().to.line; - var order = getOrder(line); - var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); - return {line: lineNo, ch: ch}; - } - - // This is somewhat involved. It is needed in order to move - // 'visually' through bi-directional text -- i.e., pressing left - // should make the cursor go left, even when in RTL text. The - // tricky part is the 'jumps', where RTL and LTR text touch each - // other. This often requires the cursor offset to move more than - // one unit, in order to visually move one unit. - function moveVisually(line, start, dir, byUnit) { - var bidi = getOrder(line); - if (!bidi) return moveLogically(line, start, dir, byUnit); - var moveOneUnit = byUnit ? function(pos, dir) { - do pos += dir; - while (pos > 0 && isExtendingChar.test(line.text.charAt(pos))); - return pos; - } : function(pos, dir) { return pos + dir; }; - var linedir = bidi[0].level; - for (var i = 0; i < bidi.length; ++i) { - var part = bidi[i], sticky = part.level % 2 == linedir; - if ((part.from < start && part.to > start) || - (sticky && (part.from == start || part.to == start))) break; - } - var target = moveOneUnit(start, part.level % 2 ? -dir : dir); - - while (target != null) { - if (part.level % 2 == linedir) { - if (target < part.from || target > part.to) { - part = bidi[i += dir]; - target = part && (dir > 0 == part.level % 2 ? moveOneUnit(part.to, -1) : moveOneUnit(part.from, 1)); - } else break; - } else { - if (target == bidiLeft(part)) { - part = bidi[--i]; - target = part && bidiRight(part); - } else if (target == bidiRight(part)) { - part = bidi[++i]; - target = part && bidiLeft(part); - } else break; - } - } - - return target < 0 || target > line.text.length ? null : target; - } - - function moveLogically(line, start, dir, byUnit) { - var target = start + dir; - if (byUnit) while (target > 0 && isExtendingChar.test(line.text.charAt(target))) target += dir; - return target < 0 || target > line.text.length ? null : target; - } - - // Bidirectional ordering algorithm - // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm - // that this (partially) implements. - - // One-char codes used for character types: - // L (L): Left-to-Right - // R (R): Right-to-Left - // r (AL): Right-to-Left Arabic - // 1 (EN): European Number - // + (ES): European Number Separator - // % (ET): European Number Terminator - // n (AN): Arabic Number - // , (CS): Common Number Separator - // m (NSM): Non-Spacing Mark - // b (BN): Boundary Neutral - // s (B): Paragraph Separator - // t (S): Segment Separator - // w (WS): Whitespace - // N (ON): Other Neutrals - - // Returns null if characters are ordered as they appear - // (left-to-right), or an array of sections ({from, to, level} - // objects) in the order in which they occur visually. - var bidiOrdering = (function() { - // Character types for codepoints 0 to 0xff - var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL"; - // Character types for codepoints 0x600 to 0x6ff - var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr"; - function charType(code) { - if (code <= 0xff) return lowTypes.charAt(code); - else if (0x590 <= code && code <= 0x5f4) return "R"; - else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600); - else if (0x700 <= code && code <= 0x8ac) return "r"; - else return "L"; - } - - var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; - var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; - - return function charOrdering(str) { - if (!bidiRE.test(str)) return false; - var len = str.length, types = [], startType = null; - for (var i = 0, type; i < len; ++i) { - types.push(type = charType(str.charCodeAt(i))); - if (startType == null) { - if (type == "L") startType = "L"; - else if (type == "R" || type == "r") startType = "R"; - } - } - if (startType == null) startType = "L"; - - // 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 = startType; 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 = startType; 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 = startType; 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] : startType) == "L"; - var after = (end < len - 1 ? types[end] : startType) == "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 = "3.0"; - - return CodeMirror; -})();