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Posted to commits@nifi.apache.org by jo...@apache.org on 2014/12/16 19:03:24 UTC
[03/51] [abbrv] incubator-nifi git commit: NIFI-27: - Latest version
of codemirror.
http://git-wip-us.apache.org/repos/asf/incubator-nifi/blob/9180b7d4/nar-bundles/framework-bundle/framework/web/nifi-web-ui/src/main/webapp/js/codemirror/lib/codemirror.js
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diff --git a/nar-bundles/framework-bundle/framework/web/nifi-web-ui/src/main/webapp/js/codemirror/lib/codemirror.js b/nar-bundles/framework-bundle/framework/web/nifi-web-ui/src/main/webapp/js/codemirror/lib/codemirror.js
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index a085720..0000000
--- a/nar-bundles/framework-bundle/framework/web/nifi-web-ui/src/main/webapp/js/codemirror/lib/codemirror.js
+++ /dev/null
@@ -1,8488 +0,0 @@
-// This is CodeMirror (http://codemirror.net), a code editor
-// implemented in JavaScript on top of the browser's DOM.
-//
-// You can find some technical background for some of the code below
-// at http://marijnhaverbeke.nl/blog/#cm-internals .
-
-(function (mod) {
- if (typeof exports == "object" && typeof module == "object") // CommonJS
- module.exports = mod();
- else if (typeof define == "function" && define.amd) // AMD
- return define([], mod);
- else // Plain browser env
- this.CodeMirror = mod();
-})(function () {
- "use strict";
-
- // BROWSER SNIFFING
-
- // Kludges for bugs and behavior differences that can't be feature
- // detected are enabled based on userAgent etc sniffing.
-
- var gecko = /gecko\/\d/i.test(navigator.userAgent);
- // ie_uptoN means Internet Explorer version N or lower
- var ie_upto10 = /MSIE \d/.test(navigator.userAgent);
- var ie_upto7 = ie_upto10 && (document.documentMode == null || document.documentMode < 8);
- var ie_upto8 = ie_upto10 && (document.documentMode == null || document.documentMode < 9);
- var ie_upto9 = ie_upto10 && (document.documentMode == null || document.documentMode < 10);
- var ie_11up = /Trident\/([7-9]|\d{2,})\./.test(navigator.userAgent);
- var ie = ie_upto10 || ie_11up;
- var webkit = /WebKit\//.test(navigator.userAgent);
- var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
- var chrome = /Chrome\//.test(navigator.userAgent);
- var presto = /Opera\//.test(navigator.userAgent);
- var safari = /Apple Computer/.test(navigator.vendor);
- var khtml = /KHTML\//.test(navigator.userAgent);
- var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent);
- var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
- var phantom = /PhantomJS/.test(navigator.userAgent);
-
- var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
- // This is woefully incomplete. Suggestions for alternative methods welcome.
- var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent);
- var mac = ios || /Mac/.test(navigator.platform);
- var windows = /win/i.test(navigator.platform);
-
- var presto_version = presto && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
- if (presto_version)
- presto_version = Number(presto_version[1]);
- if (presto_version && presto_version >= 15) {
- presto = false;
- webkit = true;
- }
- // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
- var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));
- var captureRightClick = gecko || (ie && !ie_upto8);
-
- // Optimize some code when these features are not used.
- var sawReadOnlySpans = false, sawCollapsedSpans = false;
-
- // EDITOR CONSTRUCTOR
-
- // A CodeMirror instance represents an editor. This is the object
- // that user code is usually dealing with.
-
- 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))
- options[opt] = defaults[opt];
- setGuttersForLineNumbers(options);
-
- var doc = options.value;
- if (typeof doc == "string")
- doc = new Doc(doc, options.mode);
- this.doc = doc;
-
- var display = this.display = new Display(place, doc);
- display.wrapper.CodeMirror = this;
- updateGutters(this);
- themeChanged(this);
- if (options.lineWrapping)
- this.display.wrapper.className += " CodeMirror-wrap";
- if (options.autofocus && !mobile)
- focusInput(this);
-
- this.state = {
- keyMaps: [], // stores maps added by addKeyMap
- overlays: [], // highlighting overlays, as added by addOverlay
- modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info
- overwrite: false, focused: false,
- suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
- pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in readInput
- draggingText: false,
- highlight: new Delayed() // stores highlight worker timeout
- };
-
- // Override magic textarea content restore that IE sometimes does
- // on our hidden textarea on reload
- if (ie_upto10)
- setTimeout(bind(resetInput, this, true), 20);
-
- registerEventHandlers(this);
-
- var cm = this;
- runInOp(this, function () {
- cm.curOp.forceUpdate = true;
- attachDoc(cm, doc);
-
- if ((options.autofocus && !mobile) || activeElt() == display.input)
- setTimeout(bind(onFocus, cm), 20);
- else
- onBlur(cm);
-
- for (var opt in optionHandlers)
- if (optionHandlers.hasOwnProperty(opt))
- optionHandlers[opt](cm, options[opt], Init);
- for (var i = 0; i < initHooks.length; ++i)
- initHooks[i](cm);
- });
- }
-
- // DISPLAY CONSTRUCTOR
-
- // The display handles the DOM integration, both for input reading
- // and content drawing. It holds references to DOM nodes and
- // display-related state.
-
- function Display(place, doc) {
- var d = this;
-
- // The semihidden textarea that is focused when the editor is
- // focused, and receives input.
- var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none");
- // The textarea is kept positioned near the cursor to prevent the
- // fact that it'll be scrolled into view on input from scrolling
- // our fake cursor out of view. On webkit, when wrap=off, paste is
- // very slow. So make the area wide instead.
- if (webkit)
- input.style.width = "1000px";
- else
- input.setAttribute("wrap", "off");
- // If border: 0; -- iOS fails to open keyboard (issue #1287)
- if (ios)
- input.style.border = "1px solid black";
- input.setAttribute("autocorrect", "off");
- input.setAttribute("autocapitalize", "off");
- input.setAttribute("spellcheck", "false");
-
- // Wraps and hides input textarea
- d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
- // The fake scrollbar elements.
- d.scrollbarH = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
- d.scrollbarV = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
- // Covers bottom-right square when both scrollbars are present.
- d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
- // Covers bottom of gutter when coverGutterNextToScrollbar is on
- // and h scrollbar is present.
- d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
- // Will contain the actual code, positioned to cover the viewport.
- d.lineDiv = elt("div", null, "CodeMirror-code");
- // Elements are added to these to represent selection and cursors.
- d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
- d.cursorDiv = elt("div", null, "CodeMirror-cursors");
- // A visibility: hidden element used to find the size of things.
- d.measure = elt("div", null, "CodeMirror-measure");
- // When lines outside of the viewport are measured, they are drawn in this.
- d.lineMeasure = elt("div", null, "CodeMirror-measure");
- // Wraps everything that needs to exist inside the vertically-padded coordinate system
- d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
- 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 document, allowing scrolling.
- d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
- // Behavior of elts with overflow: auto and padding is
- // inconsistent across browsers. This is used to ensure the
- // scrollable area is big enough.
- d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;");
- // Will contain the gutters, if any.
- d.gutters = elt("div", null, "CodeMirror-gutters");
- d.lineGutter = null;
- // Actual scrollable element.
- d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
- d.scroller.setAttribute("tabIndex", "-1");
- // The element in which the editor lives.
- d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV,
- d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
-
- // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
- if (ie_upto7) {
- d.gutters.style.zIndex = -1;
- d.scroller.style.paddingRight = 0;
- }
- // 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).
- if (ie_upto7)
- d.scrollbarH.style.minHeight = d.scrollbarV.style.minWidth = "18px";
-
- if (place.appendChild)
- place.appendChild(d.wrapper);
- else
- place(d.wrapper);
-
- // Current rendered range (may be bigger than the view window).
- d.viewFrom = d.viewTo = doc.first;
- // Information about the rendered lines.
- d.view = [];
- // Holds info about a single rendered line when it was rendered
- // for measurement, while not in view.
- d.externalMeasured = null;
- // Empty space (in pixels) above the view
- d.viewOffset = 0;
- d.lastSizeC = 0;
- d.updateLineNumbers = null;
-
- // 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 line widget is
- // added. As an optimization, line widget aligning is skipped when
- // this is false.
- d.alignWidgets = false;
- // Flag that indicates whether we expect input to appear real soon
- // now (after some event like 'keypress' or 'input') and are
- // polling intensively.
- d.pollingFast = false;
- // Self-resetting timeout for the poller
- d.poll = new Delayed();
-
- d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
-
- // Tracks when resetInput has punted to just putting a short
- // string into the textarea instead of the full selection.
- d.inaccurateSelection = false;
-
- // Tracks the maximum line length so that the horizontal scrollbar
- // can be kept static when scrolling.
- d.maxLine = null;
- d.maxLineLength = 0;
- d.maxLineChanged = false;
-
- // Used for measuring wheel scrolling granularity
- d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;
-
- // True when shift is held down.
- d.shift = false;
- }
-
- // STATE UPDATES
-
- // Used to get the editor into a consistent state again when options change.
-
- function loadMode(cm) {
- cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption);
- resetModeState(cm);
- }
-
- function resetModeState(cm) {
- cm.doc.iter(function (line) {
- if (line.stateAfter)
- line.stateAfter = null;
- if (line.styles)
- line.styles = null;
- });
- cm.doc.frontier = cm.doc.first;
- startWorker(cm, 100);
- cm.state.modeGen++;
- if (cm.curOp)
- regChange(cm);
- }
-
- function wrappingChanged(cm) {
- if (cm.options.lineWrapping) {
- cm.display.wrapper.className += " CodeMirror-wrap";
- cm.display.sizer.style.minWidth = "";
- } else {
- cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", "");
- findMaxLine(cm);
- }
- estimateLineHeights(cm);
- regChange(cm);
- clearCaches(cm);
- setTimeout(function () {
- updateScrollbars(cm);
- }, 100);
- }
-
- // Returns a function that estimates the height of a line, to use as
- // first approximation until the line becomes visible (and is thus
- // properly measurable).
- function estimateHeight(cm) {
- var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
- var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
- return function (line) {
- if (lineIsHidden(cm.doc, line))
- return 0;
-
- var widgetsHeight = 0;
- if (line.widgets)
- for (var i = 0; i < line.widgets.length; i++) {
- if (line.widgets[i].height)
- widgetsHeight += line.widgets[i].height;
- }
-
- if (wrapping)
- return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th;
- else
- return widgetsHeight + th;
- };
- }
-
- function estimateLineHeights(cm) {
- var doc = cm.doc, est = estimateHeight(cm);
- doc.iter(function (line) {
- var estHeight = est(line);
- if (estHeight != line.height)
- updateLineHeight(line, estHeight);
- });
- }
-
- function keyMapChanged(cm) {
- var map = keyMap[cm.options.keyMap], style = map.style;
- cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
- (style ? " cm-keymap-" + style : "");
- }
-
- function themeChanged(cm) {
- cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
- cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
- clearCaches(cm);
- }
-
- function guttersChanged(cm) {
- updateGutters(cm);
- regChange(cm);
- setTimeout(function () {
- alignHorizontally(cm);
- }, 20);
- }
-
- // Rebuild the gutter elements, ensure the margin to the left of the
- // code matches their width.
- function updateGutters(cm) {
- var gutters = cm.display.gutters, specs = cm.options.gutters;
- removeChildren(gutters);
- 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";
- var width = gutters.offsetWidth;
- cm.display.sizer.style.marginLeft = width + "px";
- if (i)
- cm.display.scrollbarH.style.left = cm.options.fixedGutter ? width + "px" : 0;
- }
-
- // Compute the character length of a line, taking into account
- // collapsed ranges (see markText) that might hide parts, and join
- // other lines onto it.
- function lineLength(line) {
- if (line.height == 0)
- return 0;
- var len = line.text.length, merged, cur = line;
- while (merged = collapsedSpanAtStart(cur)) {
- var found = merged.find(0, true);
- cur = found.from.line;
- len += found.from.ch - found.to.ch;
- }
- cur = line;
- while (merged = collapsedSpanAtEnd(cur)) {
- var found = merged.find(0, true);
- len -= cur.text.length - found.from.ch;
- cur = found.to.line;
- len += cur.text.length - found.to.ch;
- }
- return len;
- }
-
- // Find the longest line in the document.
- function findMaxLine(cm) {
- var d = cm.display, doc = cm.doc;
- d.maxLine = getLine(doc, doc.first);
- d.maxLineLength = lineLength(d.maxLine);
- d.maxLineChanged = true;
- doc.iter(function (line) {
- var len = lineLength(line);
- if (len > d.maxLineLength) {
- d.maxLineLength = len;
- d.maxLine = line;
- }
- });
- }
-
- // Make sure the gutters options contains the element
- // "CodeMirror-linenumbers" when the lineNumbers option is true.
- function setGuttersForLineNumbers(options) {
- var found = indexOf(options.gutters, "CodeMirror-linenumbers");
- if (found == -1 && options.lineNumbers) {
- options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
- } else if (found > -1 && !options.lineNumbers) {
- options.gutters = options.gutters.slice(0);
- options.gutters.splice(found, 1);
- }
- }
-
- // SCROLLBARS
-
- // Prepare DOM reads needed to update the scrollbars. Done in one
- // shot to minimize update/measure roundtrips.
- function measureForScrollbars(cm) {
- var scroll = cm.display.scroller;
- return {
- clientHeight: scroll.clientHeight,
- barHeight: cm.display.scrollbarV.clientHeight,
- scrollWidth: scroll.scrollWidth, clientWidth: scroll.clientWidth,
- barWidth: cm.display.scrollbarH.clientWidth,
- docHeight: Math.round(cm.doc.height + paddingVert(cm.display))
- };
- }
-
- // Re-synchronize the fake scrollbars with the actual size of the
- // content.
- function updateScrollbars(cm, measure) {
- if (!measure)
- measure = measureForScrollbars(cm);
- var d = cm.display;
- var scrollHeight = measure.docHeight + scrollerCutOff;
- var needsH = measure.scrollWidth > measure.clientWidth;
- var needsV = scrollHeight > measure.clientHeight;
- if (needsV) {
- d.scrollbarV.style.display = "block";
- d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0";
- // A bug in IE8 can cause this value to be negative, so guard it.
- d.scrollbarV.firstChild.style.height =
- Math.max(0, scrollHeight - measure.clientHeight + (measure.barHeight || d.scrollbarV.clientHeight)) + "px";
- } else {
- d.scrollbarV.style.display = "";
- d.scrollbarV.firstChild.style.height = "0";
- }
- if (needsH) {
- d.scrollbarH.style.display = "block";
- d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0";
- d.scrollbarH.firstChild.style.width =
- (measure.scrollWidth - measure.clientWidth + (measure.barWidth || d.scrollbarH.clientWidth)) + "px";
- } else {
- d.scrollbarH.style.display = "";
- d.scrollbarH.firstChild.style.width = "0";
- }
- if (needsH && needsV) {
- d.scrollbarFiller.style.display = "block";
- d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px";
- } else
- d.scrollbarFiller.style.display = "";
- if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
- d.gutterFiller.style.display = "block";
- d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px";
- d.gutterFiller.style.width = d.gutters.offsetWidth + "px";
- } else
- d.gutterFiller.style.display = "";
-
- if (mac_geLion && scrollbarWidth(d.measure) === 0) {
- d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px";
- var barMouseDown = function (e) {
- if (e_target(e) != d.scrollbarV && e_target(e) != d.scrollbarH)
- operation(cm, onMouseDown)(e);
- };
- on(d.scrollbarV, "mousedown", barMouseDown);
- on(d.scrollbarH, "mousedown", barMouseDown);
- }
- }
-
- // Compute the lines that are visible in a given viewport (defaults
- // the the current scroll position). viewPort may contain top,
- // height, and ensure (see op.scrollToPos) properties.
- function visibleLines(display, doc, viewPort) {
- var top = viewPort && viewPort.top != null ? viewPort.top : display.scroller.scrollTop;
- top = Math.floor(top - paddingTop(display));
- var bottom = viewPort && viewPort.bottom != null ? viewPort.bottom : top + display.wrapper.clientHeight;
-
- var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
- // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
- // forces those lines into the viewport (if possible).
- if (viewPort && viewPort.ensure) {
- var ensureFrom = viewPort.ensure.from.line, ensureTo = viewPort.ensure.to.line;
- if (ensureFrom < from)
- return {from: ensureFrom,
- to: lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight)};
- if (Math.min(ensureTo, doc.lastLine()) >= to)
- return {from: lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight),
- to: ensureTo};
- }
- return {from: from, to: to};
- }
-
- // LINE NUMBERS
-
- // Re-align line numbers and gutter marks to compensate for
- // horizontal scrolling.
- function alignHorizontally(cm) {
- var display = cm.display, view = display.view;
- if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter))
- return;
- var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
- var gutterW = display.gutters.offsetWidth, left = comp + "px";
- for (var i = 0; i < view.length; i++)
- if (!view[i].hidden) {
- if (cm.options.fixedGutter && view[i].gutter)
- view[i].gutter.style.left = left;
- var align = view[i].alignable;
- if (align)
- for (var j = 0; j < align.length; j++)
- align[j].style.left = left;
- }
- if (cm.options.fixedGutter)
- display.gutters.style.left = (comp + gutterW) + "px";
- }
-
- // Used to ensure that the line number gutter is still the right
- // size for the current document size. Returns true when an update
- // is needed.
- function maybeUpdateLineNumberWidth(cm) {
- if (!cm.options.lineNumbers)
- return false;
- var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
- if (last.length != display.lineNumChars) {
- var test = display.measure.appendChild(elt("div", [elt("div", last)],
- "CodeMirror-linenumber CodeMirror-gutter-elt"));
- var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
- display.lineGutter.style.width = "";
- display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding);
- display.lineNumWidth = display.lineNumInnerWidth + padding;
- display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
- display.lineGutter.style.width = display.lineNumWidth + "px";
- var width = display.gutters.offsetWidth;
- display.scrollbarH.style.left = cm.options.fixedGutter ? width + "px" : 0;
- display.sizer.style.marginLeft = width + "px";
- return true;
- }
- return false;
- }
-
- function lineNumberFor(options, i) {
- return String(options.lineNumberFormatter(i + options.firstLineNumber));
- }
-
- // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
- // but using getBoundingClientRect to get a sub-pixel-accurate
- // result.
- function compensateForHScroll(display) {
- return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;
- }
-
- // DISPLAY DRAWING
-
- // Updates the display, selection, and scrollbars, using the
- // information in display.view to find out which nodes are no longer
- // up-to-date. Tries to bail out early when no changes are needed,
- // unless forced is true.
- // Returns true if an actual update happened, false otherwise.
- function updateDisplay(cm, viewPort, forced) {
- var oldFrom = cm.display.viewFrom, oldTo = cm.display.viewTo, updated;
- var visible = visibleLines(cm.display, cm.doc, viewPort);
- for (var first = true; ; first = false) {
- var oldWidth = cm.display.scroller.clientWidth;
- if (!updateDisplayInner(cm, visible, forced))
- break;
- updated = true;
-
- // If the max line changed since it was last measured, measure it,
- // and ensure the document's width matches it.
- if (cm.display.maxLineChanged && !cm.options.lineWrapping)
- adjustContentWidth(cm);
-
- var barMeasure = measureForScrollbars(cm);
- updateSelection(cm);
- setDocumentHeight(cm, barMeasure);
- updateScrollbars(cm, barMeasure);
- if (first && cm.options.lineWrapping && oldWidth != cm.display.scroller.clientWidth) {
- forced = true;
- continue;
- }
- forced = false;
-
- // Clip forced viewport to actual scrollable area.
- if (viewPort && viewPort.top != null)
- viewPort = {top: Math.min(barMeasure.docHeight - scrollerCutOff - barMeasure.clientHeight, viewPort.top)};
- // Updated line heights might result in the drawn area not
- // actually covering the viewport. Keep looping until it does.
- visible = visibleLines(cm.display, cm.doc, viewPort);
- if (visible.from >= cm.display.viewFrom && visible.to <= cm.display.viewTo)
- break;
- }
-
- cm.display.updateLineNumbers = null;
- if (updated) {
- signalLater(cm, "update", cm);
- if (cm.display.viewFrom != oldFrom || cm.display.viewTo != oldTo)
- signalLater(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
- }
- return updated;
- }
-
- // Does the actual updating of the line display. Bails out
- // (returning false) when there is nothing to be done and forced is
- // false.
- function updateDisplayInner(cm, visible, forced) {
- var display = cm.display, doc = cm.doc;
- if (!display.wrapper.offsetWidth) {
- resetView(cm);
- return;
- }
-
- // Bail out if the visible area is already rendered and nothing changed.
- if (!forced && visible.from >= display.viewFrom && visible.to <= display.viewTo &&
- countDirtyView(cm) == 0)
- return;
-
- if (maybeUpdateLineNumberWidth(cm))
- resetView(cm);
- var dims = getDimensions(cm);
-
- // Compute a suitable new viewport (from & to)
- var end = doc.first + doc.size;
- var from = Math.max(visible.from - cm.options.viewportMargin, doc.first);
- var to = Math.min(end, visible.to + cm.options.viewportMargin);
- if (display.viewFrom < from && from - display.viewFrom < 20)
- from = Math.max(doc.first, display.viewFrom);
- if (display.viewTo > to && display.viewTo - to < 20)
- to = Math.min(end, display.viewTo);
- if (sawCollapsedSpans) {
- from = visualLineNo(cm.doc, from);
- to = visualLineEndNo(cm.doc, to);
- }
-
- var different = from != display.viewFrom || to != display.viewTo ||
- display.lastSizeC != display.wrapper.clientHeight;
- adjustView(cm, from, to);
-
- display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
- // Position the mover div to align with the current scroll position
- cm.display.mover.style.top = display.viewOffset + "px";
-
- var toUpdate = countDirtyView(cm);
- if (!different && toUpdate == 0 && !forced)
- return;
-
- // For big changes, we hide the enclosing element during the
- // update, since that speeds up the operations on most browsers.
- var focused = activeElt();
- if (toUpdate > 4)
- display.lineDiv.style.display = "none";
- patchDisplay(cm, display.updateLineNumbers, dims);
- if (toUpdate > 4)
- display.lineDiv.style.display = "";
- // There might have been a widget with a focused element that got
- // hidden or updated, if so re-focus it.
- if (focused && activeElt() != focused && focused.offsetHeight)
- focused.focus();
-
- // Prevent selection and cursors from interfering with the scroll
- // width.
- removeChildren(display.cursorDiv);
- removeChildren(display.selectionDiv);
-
- if (different) {
- display.lastSizeC = display.wrapper.clientHeight;
- startWorker(cm, 400);
- }
-
- updateHeightsInViewport(cm);
-
- return true;
- }
-
- function adjustContentWidth(cm) {
- var display = cm.display;
- var width = measureChar(cm, display.maxLine, display.maxLine.text.length).left;
- display.maxLineChanged = false;
- var minWidth = Math.max(0, width + 3);
- var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + minWidth + scrollerCutOff - display.scroller.clientWidth);
- display.sizer.style.minWidth = minWidth + "px";
- if (maxScrollLeft < cm.doc.scrollLeft)
- setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true);
- }
-
- function setDocumentHeight(cm, measure) {
- cm.display.sizer.style.minHeight = cm.display.heightForcer.style.top = measure.docHeight + "px";
- cm.display.gutters.style.height = Math.max(measure.docHeight, measure.clientHeight - scrollerCutOff) + "px";
- }
-
- // Read the actual heights of the rendered lines, and update their
- // stored heights to match.
- function updateHeightsInViewport(cm) {
- var display = cm.display;
- var prevBottom = display.lineDiv.offsetTop;
- for (var i = 0; i < display.view.length; i++) {
- var cur = display.view[i], height;
- if (cur.hidden)
- continue;
- if (ie_upto7) {
- var bot = cur.node.offsetTop + cur.node.offsetHeight;
- height = bot - prevBottom;
- prevBottom = bot;
- } else {
- var box = cur.node.getBoundingClientRect();
- height = box.bottom - box.top;
- }
- var diff = cur.line.height - height;
- if (height < 2)
- height = textHeight(display);
- if (diff > .001 || diff < -.001) {
- updateLineHeight(cur.line, height);
- updateWidgetHeight(cur.line);
- if (cur.rest)
- for (var j = 0; j < cur.rest.length; j++)
- updateWidgetHeight(cur.rest[j]);
- }
- }
- }
-
- // Read and store the height of line widgets associated with the
- // given line.
- function updateWidgetHeight(line) {
- if (line.widgets)
- for (var i = 0; i < line.widgets.length; ++i)
- line.widgets[i].height = line.widgets[i].node.offsetHeight;
- }
-
- // Do a bulk-read of the DOM positions and sizes needed to draw the
- // view, so that we don't interleave reading and writing to the DOM.
- function getDimensions(cm) {
- var d = cm.display, left = {}, width = {};
- 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};
- }
-
- // Sync the actual display DOM structure with display.view, removing
- // nodes for lines that are no longer in view, and creating the ones
- // that are not there yet, and updating the ones that are out of
- // date.
- function patchDisplay(cm, updateNumbersFrom, dims) {
- var display = cm.display, lineNumbers = cm.options.lineNumbers;
- var container = display.lineDiv, cur = container.firstChild;
-
- function rm(node) {
- var next = node.nextSibling;
- // Works around a throw-scroll bug in OS X Webkit
- if (webkit && mac && cm.display.currentWheelTarget == node)
- node.style.display = "none";
- else
- node.parentNode.removeChild(node);
- return next;
- }
-
- var view = display.view, lineN = display.viewFrom;
- // Loop over the elements in the view, syncing cur (the DOM nodes
- // in display.lineDiv) with the view as we go.
- for (var i = 0; i < view.length; i++) {
- var lineView = view[i];
- if (lineView.hidden) {
- } else if (!lineView.node) { // Not drawn yet
- var node = buildLineElement(cm, lineView, lineN, dims);
- container.insertBefore(node, cur);
- } else { // Already drawn
- while (cur != lineView.node)
- cur = rm(cur);
- var updateNumber = lineNumbers && updateNumbersFrom != null &&
- updateNumbersFrom <= lineN && lineView.lineNumber;
- if (lineView.changes) {
- if (indexOf(lineView.changes, "gutter") > -1)
- updateNumber = false;
- updateLineForChanges(cm, lineView, lineN, dims);
- }
- if (updateNumber) {
- removeChildren(lineView.lineNumber);
- lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
- }
- cur = lineView.node.nextSibling;
- }
- lineN += lineView.size;
- }
- while (cur)
- cur = rm(cur);
- }
-
- // When an aspect of a line changes, a string is added to
- // lineView.changes. This updates the relevant part of the line's
- // DOM structure.
- function updateLineForChanges(cm, lineView, lineN, dims) {
- for (var j = 0; j < lineView.changes.length; j++) {
- var type = lineView.changes[j];
- if (type == "text")
- updateLineText(cm, lineView);
- else if (type == "gutter")
- updateLineGutter(cm, lineView, lineN, dims);
- else if (type == "class")
- updateLineClasses(lineView);
- else if (type == "widget")
- updateLineWidgets(lineView, dims);
- }
- lineView.changes = null;
- }
-
- // Lines with gutter elements, widgets or a background class need to
- // be wrapped, and have the extra elements added to the wrapper div
- function ensureLineWrapped(lineView) {
- if (lineView.node == lineView.text) {
- lineView.node = elt("div", null, null, "position: relative");
- if (lineView.text.parentNode)
- lineView.text.parentNode.replaceChild(lineView.node, lineView.text);
- lineView.node.appendChild(lineView.text);
- if (ie_upto7)
- lineView.node.style.zIndex = 2;
- }
- return lineView.node;
- }
-
- function updateLineBackground(lineView) {
- var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass;
- if (cls)
- cls += " CodeMirror-linebackground";
- if (lineView.background) {
- if (cls)
- lineView.background.className = cls;
- else {
- lineView.background.parentNode.removeChild(lineView.background);
- lineView.background = null;
- }
- } else if (cls) {
- var wrap = ensureLineWrapped(lineView);
- lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
- }
- }
-
- // Wrapper around buildLineContent which will reuse the structure
- // in display.externalMeasured when possible.
- function getLineContent(cm, lineView) {
- var ext = cm.display.externalMeasured;
- if (ext && ext.line == lineView.line) {
- cm.display.externalMeasured = null;
- lineView.measure = ext.measure;
- return ext.built;
- }
- return buildLineContent(cm, lineView);
- }
-
- // Redraw the line's text. Interacts with the background and text
- // classes because the mode may output tokens that influence these
- // classes.
- function updateLineText(cm, lineView) {
- var cls = lineView.text.className;
- var built = getLineContent(cm, lineView);
- if (lineView.text == lineView.node)
- lineView.node = built.pre;
- lineView.text.parentNode.replaceChild(built.pre, lineView.text);
- lineView.text = built.pre;
- if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
- lineView.bgClass = built.bgClass;
- lineView.textClass = built.textClass;
- updateLineClasses(lineView);
- } else if (cls) {
- lineView.text.className = cls;
- }
- }
-
- function updateLineClasses(lineView) {
- updateLineBackground(lineView);
- if (lineView.line.wrapClass)
- ensureLineWrapped(lineView).className = lineView.line.wrapClass;
- else if (lineView.node != lineView.text)
- lineView.node.className = "";
- var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass;
- lineView.text.className = textClass || "";
- }
-
- function updateLineGutter(cm, lineView, lineN, dims) {
- if (lineView.gutter) {
- lineView.node.removeChild(lineView.gutter);
- lineView.gutter = null;
- }
- var markers = lineView.line.gutterMarkers;
- if (cm.options.lineNumbers || markers) {
- var wrap = ensureLineWrapped(lineView);
- var gutterWrap = lineView.gutter =
- wrap.insertBefore(elt("div", null, "CodeMirror-gutter-wrapper", "position: absolute; left: " +
- (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"),
- lineView.text);
- if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
- lineView.lineNumber = gutterWrap.appendChild(
- elt("div", lineNumberFor(cm.options, lineN),
- "CodeMirror-linenumber CodeMirror-gutter-elt",
- "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
- + cm.display.lineNumInnerWidth + "px"));
- if (markers)
- for (var k = 0; k < cm.options.gutters.length; ++k) {
- var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
- if (found)
- gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
- dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
- }
- }
- }
-
- function updateLineWidgets(lineView, dims) {
- if (lineView.alignable)
- lineView.alignable = null;
- for (var node = lineView.node.firstChild, next; node; node = next) {
- var next = node.nextSibling;
- if (node.className == "CodeMirror-linewidget")
- lineView.node.removeChild(node);
- }
- insertLineWidgets(lineView, dims);
- }
-
- // Build a line's DOM representation from scratch
- function buildLineElement(cm, lineView, lineN, dims) {
- var built = getLineContent(cm, lineView);
- lineView.text = lineView.node = built.pre;
- if (built.bgClass)
- lineView.bgClass = built.bgClass;
- if (built.textClass)
- lineView.textClass = built.textClass;
-
- updateLineClasses(lineView);
- updateLineGutter(cm, lineView, lineN, dims);
- insertLineWidgets(lineView, dims);
- return lineView.node;
- }
-
- // A lineView may contain multiple logical lines (when merged by
- // collapsed spans). The widgets for all of them need to be drawn.
- function insertLineWidgets(lineView, dims) {
- insertLineWidgetsFor(lineView.line, lineView, dims, true);
- if (lineView.rest)
- for (var i = 0; i < lineView.rest.length; i++)
- insertLineWidgetsFor(lineView.rest[i], lineView, dims, false);
- }
-
- function insertLineWidgetsFor(line, lineView, dims, allowAbove) {
- if (!line.widgets)
- return;
- var wrap = ensureLineWrapped(lineView);
- for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
- var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
- if (!widget.handleMouseEvents)
- node.ignoreEvents = true;
- positionLineWidget(widget, node, lineView, dims);
- if (allowAbove && widget.above)
- wrap.insertBefore(node, lineView.gutter || lineView.text);
- else
- wrap.appendChild(node);
- signalLater(widget, "redraw");
- }
- }
-
- function positionLineWidget(widget, node, lineView, dims) {
- if (widget.noHScroll) {
- (lineView.alignable || (lineView.alignable = [])).push(node);
- var width = dims.wrapperWidth;
- node.style.left = dims.fixedPos + "px";
- if (!widget.coverGutter) {
- width -= dims.gutterTotalWidth;
- node.style.paddingLeft = dims.gutterTotalWidth + "px";
- }
- node.style.width = width + "px";
- }
- if (widget.coverGutter) {
- node.style.zIndex = 5;
- node.style.position = "relative";
- if (!widget.noHScroll)
- node.style.marginLeft = -dims.gutterTotalWidth + "px";
- }
- }
-
- // POSITION OBJECT
-
- // A Pos instance represents a position within the text.
- var Pos = CodeMirror.Pos = function (line, ch) {
- if (!(this instanceof Pos))
- return new Pos(line, ch);
- this.line = line;
- this.ch = ch;
- };
-
- // Compare two positions, return 0 if they are the same, a negative
- // number when a is less, and a positive number otherwise.
- var cmp = CodeMirror.cmpPos = function (a, b) {
- return a.line - b.line || a.ch - b.ch;
- };
-
- function copyPos(x) {
- return Pos(x.line, x.ch);
- }
- function maxPos(a, b) {
- return cmp(a, b) < 0 ? b : a;
- }
- function minPos(a, b) {
- return cmp(a, b) < 0 ? a : b;
- }
-
- // SELECTION / CURSOR
-
- // Selection objects are immutable. A new one is created every time
- // the selection changes. A selection is one or more non-overlapping
- // (and non-touching) ranges, sorted, and an integer that indicates
- // which one is the primary selection (the one that's scrolled into
- // view, that getCursor returns, etc).
- function Selection(ranges, primIndex) {
- this.ranges = ranges;
- this.primIndex = primIndex;
- }
-
- Selection.prototype = {
- primary: function () {
- return this.ranges[this.primIndex];
- },
- equals: function (other) {
- if (other == this)
- return true;
- if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length)
- return false;
- for (var i = 0; i < this.ranges.length; i++) {
- var here = this.ranges[i], there = other.ranges[i];
- if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0)
- return false;
- }
- return true;
- },
- deepCopy: function () {
- for (var out = [], i = 0; i < this.ranges.length; i++)
- out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head));
- return new Selection(out, this.primIndex);
- },
- somethingSelected: function () {
- for (var i = 0; i < this.ranges.length; i++)
- if (!this.ranges[i].empty())
- return true;
- return false;
- },
- contains: function (pos, end) {
- if (!end)
- end = pos;
- for (var i = 0; i < this.ranges.length; i++) {
- var range = this.ranges[i];
- if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
- return i;
- }
- return -1;
- }
- };
-
- function Range(anchor, head) {
- this.anchor = anchor;
- this.head = head;
- }
-
- Range.prototype = {
- from: function () {
- return minPos(this.anchor, this.head);
- },
- to: function () {
- return maxPos(this.anchor, this.head);
- },
- empty: function () {
- return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch;
- }
- };
-
- // Take an unsorted, potentially overlapping set of ranges, and
- // build a selection out of it. 'Consumes' ranges array (modifying
- // it).
- function normalizeSelection(ranges, primIndex) {
- var prim = ranges[primIndex];
- ranges.sort(function (a, b) {
- return cmp(a.from(), b.from());
- });
- primIndex = indexOf(ranges, prim);
- for (var i = 1; i < ranges.length; i++) {
- var cur = ranges[i], prev = ranges[i - 1];
- if (cmp(prev.to(), cur.from()) >= 0) {
- var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
- var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
- if (i <= primIndex)
- --primIndex;
- ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
- }
- }
- return new Selection(ranges, primIndex);
- }
-
- function simpleSelection(anchor, head) {
- return new Selection([new Range(anchor, head || anchor)], 0);
- }
-
- // Most of the external API clips given positions to make sure they
- // actually exist within the document.
- function clipLine(doc, n) {
- return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));
- }
- function clipPos(doc, pos) {
- if (pos.line < doc.first)
- return Pos(doc.first, 0);
- var last = doc.first + doc.size - 1;
- if (pos.line > last)
- return Pos(last, getLine(doc, last).text.length);
- return clipToLen(pos, getLine(doc, pos.line).text.length);
- }
- function clipToLen(pos, linelen) {
- var ch = pos.ch;
- if (ch == null || ch > linelen)
- return Pos(pos.line, linelen);
- else if (ch < 0)
- return Pos(pos.line, 0);
- else
- return pos;
- }
- function isLine(doc, l) {
- return l >= doc.first && l < doc.first + doc.size;
- }
- function clipPosArray(doc, array) {
- for (var out = [], i = 0; i < array.length; i++)
- out[i] = clipPos(doc, array[i]);
- return out;
- }
-
- // SELECTION UPDATES
-
- // The 'scroll' parameter given to many of these indicated whether
- // the new cursor position should be scrolled into view after
- // modifying the selection.
-
- // If shift is held or the extend flag is set, extends a range to
- // include a given position (and optionally a second position).
- // Otherwise, simply returns the range between the given positions.
- // Used for cursor motion and such.
- function extendRange(doc, range, head, other) {
- if (doc.cm && doc.cm.display.shift || doc.extend) {
- var anchor = range.anchor;
- if (other) {
- var posBefore = cmp(head, anchor) < 0;
- if (posBefore != (cmp(other, anchor) < 0)) {
- anchor = head;
- head = other;
- } else if (posBefore != (cmp(head, other) < 0)) {
- head = other;
- }
- }
- return new Range(anchor, head);
- } else {
- return new Range(other || head, head);
- }
- }
-
- // Extend the primary selection range, discard the rest.
- function extendSelection(doc, head, other, options) {
- setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options);
- }
-
- // Extend all selections (pos is an array of selections with length
- // equal the number of selections)
- function extendSelections(doc, heads, options) {
- for (var out = [], i = 0; i < doc.sel.ranges.length; i++)
- out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null);
- var newSel = normalizeSelection(out, doc.sel.primIndex);
- setSelection(doc, newSel, options);
- }
-
- // Updates a single range in the selection.
- function replaceOneSelection(doc, i, range, options) {
- var ranges = doc.sel.ranges.slice(0);
- ranges[i] = range;
- setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options);
- }
-
- // Reset the selection to a single range.
- function setSimpleSelection(doc, anchor, head, options) {
- setSelection(doc, simpleSelection(anchor, head), options);
- }
-
- // Give beforeSelectionChange handlers a change to influence a
- // selection update.
- function filterSelectionChange(doc, sel) {
- var obj = {
- ranges: sel.ranges,
- update: function (ranges) {
- this.ranges = [];
- for (var i = 0; i < ranges.length; i++)
- this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
- clipPos(doc, ranges[i].head));
- }
- };
- signal(doc, "beforeSelectionChange", doc, obj);
- if (doc.cm)
- signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
- if (obj.ranges != sel.ranges)
- return normalizeSelection(obj.ranges, obj.ranges.length - 1);
- else
- return sel;
- }
-
- function setSelectionReplaceHistory(doc, sel, options) {
- var done = doc.history.done, last = lst(done);
- if (last && last.ranges) {
- done[done.length - 1] = sel;
- setSelectionNoUndo(doc, sel, options);
- } else {
- setSelection(doc, sel, options);
- }
- }
-
- // Set a new selection.
- function setSelection(doc, sel, options) {
- setSelectionNoUndo(doc, sel, options);
- addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
- }
-
- function setSelectionNoUndo(doc, sel, options) {
- if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
- sel = filterSelectionChange(doc, sel);
-
- var bias = cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1;
- setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));
-
- if (!(options && options.scroll === false) && doc.cm)
- ensureCursorVisible(doc.cm);
- }
-
- function setSelectionInner(doc, sel) {
- if (sel.equals(doc.sel))
- return;
-
- doc.sel = sel;
-
- if (doc.cm)
- doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged =
- doc.cm.curOp.cursorActivity = true;
- signalLater(doc, "cursorActivity", doc);
- }
-
- // Verify that the selection does not partially select any atomic
- // marked ranges.
- function reCheckSelection(doc) {
- setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll);
- }
-
- // Return a selection that does not partially select any atomic
- // ranges.
- function skipAtomicInSelection(doc, sel, bias, mayClear) {
- var out;
- for (var i = 0; i < sel.ranges.length; i++) {
- var range = sel.ranges[i];
- var newAnchor = skipAtomic(doc, range.anchor, bias, mayClear);
- var newHead = skipAtomic(doc, range.head, bias, mayClear);
- if (out || newAnchor != range.anchor || newHead != range.head) {
- if (!out)
- out = sel.ranges.slice(0, i);
- out[i] = new Range(newAnchor, newHead);
- }
- }
- return out ? normalizeSelection(out, sel.primIndex) : sel;
- }
-
- // Ensure a given position is not inside an atomic range.
- function skipAtomic(doc, pos, bias, mayClear) {
- var flipped = false, curPos = pos;
- var dir = bias || 1;
- doc.cantEdit = false;
- search: for (; ; ) {
- var line = getLine(doc, curPos.line);
- if (line.markedSpans) {
- for (var i = 0; i < line.markedSpans.length; ++i) {
- var sp = line.markedSpans[i], m = sp.marker;
- if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
- (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
- if (mayClear) {
- signal(m, "beforeCursorEnter");
- if (m.explicitlyCleared) {
- if (!line.markedSpans)
- break;
- else {
- --i;
- continue;
- }
- }
- }
- if (!m.atomic)
- continue;
- var newPos = m.find(dir < 0 ? -1 : 1);
- if (cmp(newPos, curPos) == 0) {
- newPos.ch += dir;
- if (newPos.ch < 0) {
- if (newPos.line > doc.first)
- newPos = clipPos(doc, Pos(newPos.line - 1));
- else
- newPos = null;
- } else if (newPos.ch > line.text.length) {
- if (newPos.line < doc.first + doc.size - 1)
- newPos = Pos(newPos.line + 1, 0);
- else
- newPos = null;
- }
- if (!newPos) {
- if (flipped) {
- // Driven in a corner -- no valid cursor position found at all
- // -- try again *with* clearing, if we didn't already
- if (!mayClear)
- return skipAtomic(doc, pos, bias, true);
- // Otherwise, turn off editing until further notice, and return the start of the doc
- doc.cantEdit = true;
- return Pos(doc.first, 0);
- }
- flipped = true;
- newPos = pos;
- dir = -dir;
- }
- }
- curPos = newPos;
- continue search;
- }
- }
- }
- return curPos;
- }
- }
-
- // SELECTION DRAWING
-
- // Redraw the selection and/or cursor
- function updateSelection(cm) {
- var display = cm.display, doc = cm.doc;
- var curFragment = document.createDocumentFragment();
- var selFragment = document.createDocumentFragment();
-
- for (var i = 0; i < doc.sel.ranges.length; i++) {
- var range = doc.sel.ranges[i];
- var collapsed = range.empty();
- if (collapsed || cm.options.showCursorWhenSelecting)
- updateSelectionCursor(cm, range, curFragment);
- if (!collapsed)
- updateSelectionRange(cm, range, selFragment);
- }
-
- // Move the hidden textarea near the cursor to prevent scrolling artifacts
- if (cm.options.moveInputWithCursor) {
- var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
- var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
- var top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
- headPos.top + lineOff.top - wrapOff.top));
- var left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
- headPos.left + lineOff.left - wrapOff.left));
- display.inputDiv.style.top = top + "px";
- display.inputDiv.style.left = left + "px";
- }
-
- removeChildrenAndAdd(display.cursorDiv, curFragment);
- removeChildrenAndAdd(display.selectionDiv, selFragment);
- }
-
- // Draws a cursor for the given range
- function updateSelectionCursor(cm, range, output) {
- var pos = cursorCoords(cm, range.head, "div");
-
- var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
- cursor.style.left = pos.left + "px";
- cursor.style.top = pos.top + "px";
- cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
-
- if (pos.other) {
- // Secondary cursor, shown when on a 'jump' in bi-directional text
- var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
- otherCursor.style.display = "";
- otherCursor.style.left = pos.other.left + "px";
- otherCursor.style.top = pos.other.top + "px";
- otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
- }
- }
-
- // Draws the given range as a highlighted selection
- function updateSelectionRange(cm, range, output) {
- var display = cm.display, doc = cm.doc;
- var fragment = document.createDocumentFragment();
- var padding = paddingH(cm.display), leftSide = padding.left, rightSide = display.lineSpace.offsetWidth - padding.right;
-
- 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 ? rightSide - left : width) +
- "px; height: " + (bottom - top) + "px"));
- }
-
- function drawForLine(line, fromArg, toArg) {
- var lineObj = getLine(doc, line);
- var lineLen = lineObj.text.length;
- var start, end;
- function coords(ch, bias) {
- return charCoords(cm, Pos(line, ch), "div", lineObj, bias);
- }
-
- iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir) {
- var leftPos = coords(from, "left"), rightPos, left, right;
- if (from == to) {
- rightPos = leftPos;
- left = right = leftPos.left;
- } else {
- rightPos = coords(to - 1, "right");
- if (dir == "rtl") {
- var tmp = leftPos;
- leftPos = rightPos;
- rightPos = tmp;
- }
- left = leftPos.left;
- right = rightPos.right;
- }
- if (fromArg == null && from == 0)
- left = leftSide;
- if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
- add(left, leftPos.top, null, leftPos.bottom);
- left = leftSide;
- if (leftPos.bottom < rightPos.top)
- add(left, leftPos.bottom, null, rightPos.top);
- }
- if (toArg == null && to == lineLen)
- right = rightSide;
- if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
- start = leftPos;
- if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
- end = rightPos;
- if (left < leftSide + 1)
- left = leftSide;
- add(left, rightPos.top, right - left, rightPos.bottom);
- });
- return {start: start, end: end};
- }
-
- var sFrom = range.from(), sTo = range.to();
- if (sFrom.line == sTo.line) {
- drawForLine(sFrom.line, sFrom.ch, sTo.ch);
- } else {
- var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);
- var singleVLine = visualLine(fromLine) == visualLine(toLine);
- var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
- var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
- if (singleVLine) {
- if (leftEnd.top < rightStart.top - 2) {
- add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
- add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
- } else {
- add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
- }
- }
- if (leftEnd.bottom < rightStart.top)
- add(leftSide, leftEnd.bottom, null, rightStart.top);
- }
-
- output.appendChild(fragment);
- }
-
- // Cursor-blinking
- function restartBlink(cm) {
- if (!cm.state.focused)
- return;
- var display = cm.display;
- clearInterval(display.blinker);
- var on = true;
- display.cursorDiv.style.visibility = "";
- if (cm.options.cursorBlinkRate > 0)
- display.blinker = setInterval(function () {
- display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden";
- }, cm.options.cursorBlinkRate);
- }
-
- // HIGHLIGHT WORKER
-
- function startWorker(cm, time) {
- if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)
- cm.state.highlight.set(time, bind(highlightWorker, cm));
- }
-
- function highlightWorker(cm) {
- var doc = cm.doc;
- if (doc.frontier < doc.first)
- doc.frontier = doc.first;
- if (doc.frontier >= cm.display.viewTo)
- return;
- var end = +new Date + cm.options.workTime;
- var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
-
- runInOp(cm, function () {
- doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) {
- if (doc.frontier >= cm.display.viewFrom) { // Visible
- var oldStyles = line.styles;
- line.styles = highlightLine(cm, line, state, true);
- var ischange = !oldStyles || oldStyles.length != line.styles.length;
- for (var i = 0; !ischange && i < oldStyles.length; ++i)
- ischange = oldStyles[i] != line.styles[i];
- if (ischange)
- regLineChange(cm, doc.frontier, "text");
- line.stateAfter = copyState(doc.mode, state);
- } else {
- processLine(cm, line.text, state);
- line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;
- }
- ++doc.frontier;
- if (+new Date > end) {
- startWorker(cm, cm.options.workDelay);
- return true;
- }
- });
- });
- }
-
- // Finds the line to start with when starting a parse. Tries to
- // find a line with a stateAfter, so that it can start with a
- // valid state. If that fails, it returns the line with the
- // smallest indentation, which tends to need the least context to
- // parse correctly.
- function findStartLine(cm, n, precise) {
- var minindent, minline, doc = cm.doc;
- var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
- for (var search = n; search > lim; --search) {
- if (search <= doc.first)
- return doc.first;
- var line = getLine(doc, search - 1);
- if (line.stateAfter && (!precise || search <= doc.frontier))
- return search;
- var indented = countColumn(line.text, null, cm.options.tabSize);
- if (minline == null || minindent > indented) {
- minline = search - 1;
- minindent = indented;
- }
- }
- return minline;
- }
-
- function getStateBefore(cm, n, precise) {
- var doc = cm.doc, display = cm.display;
- if (!doc.mode.startState)
- return true;
- var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos - 1).stateAfter;
- if (!state)
- state = startState(doc.mode);
- else
- state = copyState(doc.mode, state);
- doc.iter(pos, n, function (line) {
- processLine(cm, line.text, state);
- var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo;
- line.stateAfter = save ? copyState(doc.mode, state) : null;
- ++pos;
- });
- if (precise)
- doc.frontier = pos;
- return state;
- }
-
- // POSITION MEASUREMENT
-
- function paddingTop(display) {
- return display.lineSpace.offsetTop;
- }
- function paddingVert(display) {
- return display.mover.offsetHeight - display.lineSpace.offsetHeight;
- }
- function paddingH(display) {
- if (display.cachedPaddingH)
- return display.cachedPaddingH;
- var e = removeChildrenAndAdd(display.measure, elt("pre", "x"));
- var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
- return display.cachedPaddingH = {left: parseInt(style.paddingLeft),
- right: parseInt(style.paddingRight)};
- }
-
- // Ensure the lineView.wrapping.heights array is populated. This is
- // an array of bottom offsets for the lines that make up a drawn
- // line. When lineWrapping is on, there might be more than one
- // height.
- function ensureLineHeights(cm, lineView, rect) {
- var wrapping = cm.options.lineWrapping;
- var curWidth = wrapping && cm.display.scroller.clientWidth;
- if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
- var heights = lineView.measure.heights = [];
- if (wrapping) {
- lineView.measure.width = curWidth;
- var rects = lineView.text.firstChild.getClientRects();
- for (var i = 0; i < rects.length - 1; i++) {
- var cur = rects[i], next = rects[i + 1];
- if (Math.abs(cur.bottom - next.bottom) > 2)
- heights.push((cur.bottom + next.top) / 2 - rect.top);
- }
- }
- heights.push(rect.bottom - rect.top);
- }
- }
-
- // Find a line map (mapping character offsets to text nodes) and a
- // measurement cache for the given line number. (A line view might
- // contain multiple lines when collapsed ranges are present.)
- function mapFromLineView(lineView, line, lineN) {
- if (lineView.line == line)
- return {map: lineView.measure.map, cache: lineView.measure.cache};
- for (var i = 0; i < lineView.rest.length; i++)
- if (lineView.rest[i] == line)
- return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]};
- for (var i = 0; i < lineView.rest.length; i++)
- if (lineNo(lineView.rest[i]) > lineN)
- return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true};
- }
-
- // Render a line into the hidden node display.externalMeasured. Used
- // when measurement is needed for a line that's not in the viewport.
- function updateExternalMeasurement(cm, line) {
- line = visualLine(line);
- var lineN = lineNo(line);
- var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
- view.lineN = lineN;
- var built = view.built = buildLineContent(cm, view);
- view.text = built.pre;
- removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
- return view;
- }
-
- // Get a {top, bottom, left, right} box (in line-local coordinates)
- // for a given character.
- function measureChar(cm, line, ch, bias) {
- return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias);
- }
-
- // Find a line view that corresponds to the given line number.
- function findViewForLine(cm, lineN) {
- if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
- return cm.display.view[findViewIndex(cm, lineN)];
- var ext = cm.display.externalMeasured;
- if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
- return ext;
- }
-
- // Measurement can be split in two steps, the set-up work that
- // applies to the whole line, and the measurement of the actual
- // character. Functions like coordsChar, that need to do a lot of
- // measurements in a row, can thus ensure that the set-up work is
- // only done once.
- function prepareMeasureForLine(cm, line) {
- var lineN = lineNo(line);
- var view = findViewForLine(cm, lineN);
- if (view && !view.text)
- view = null;
- else if (view && view.changes)
- updateLineForChanges(cm, view, lineN, getDimensions(cm));
- if (!view)
- view = updateExternalMeasurement(cm, line);
-
- var info = mapFromLineView(view, line, lineN);
- return {
- line: line, view: view, rect: null,
- map: info.map, cache: info.cache, before: info.before,
- hasHeights: false
- };
- }
-
- // Given a prepared measurement object, measures the position of an
- // actual character (or fetches it from the cache).
- function measureCharPrepared(cm, prepared, ch, bias) {
- if (prepared.before)
- ch = -1;
- var key = ch + (bias || ""), found;
- if (prepared.cache.hasOwnProperty(key)) {
- found = prepared.cache[key];
- } else {
- if (!prepared.rect)
- prepared.rect = prepared.view.text.getBoundingClientRect();
- if (!prepared.hasHeights) {
- ensureLineHeights(cm, prepared.view, prepared.rect);
- prepared.hasHeights = true;
- }
- found = measureCharInner(cm, prepared, ch, bias);
- if (!found.bogus)
- prepared.cache[key] = found;
- }
- return {left: found.left, right: found.right, top: found.top, bottom: found.bottom};
- }
-
- var nullRect = {left: 0, right: 0, top: 0, bottom: 0};
-
- function measureCharInner(cm, prepared, ch, bias) {
- var map = prepared.map;
-
- var node, start, end, collapse;
- // First, search the line map for the text node corresponding to,
- // or closest to, the target character.
- for (var i = 0; i < map.length; i += 3) {
- var mStart = map[i], mEnd = map[i + 1];
- if (ch < mStart) {
- start = 0;
- end = 1;
- collapse = "left";
- } else if (ch < mEnd) {
- start = ch - mStart;
- end = start + 1;
- } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
- end = mEnd - mStart;
- start = end - 1;
- if (ch >= mEnd)
- collapse = "right";
- }
- if (start != null) {
- node = map[i + 2];
- if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
- collapse = bias;
- if (bias == "left" && start == 0)
- while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
- node = map[(i -= 3) + 2];
- collapse = "left";
- }
- if (bias == "right" && start == mEnd - mStart)
- while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
- node = map[(i += 3) + 2];
- collapse = "right";
- }
- break;
- }
- }
-
- var rect;
- if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
- while (start && isExtendingChar(prepared.line.text.charAt(mStart + start)))
- --start;
- while (mStart + end < mEnd && isExtendingChar(prepared.line.text.charAt(mStart + end)))
- ++end;
- if (ie_upto8 && start == 0 && end == mEnd - mStart) {
- rect = node.parentNode.getBoundingClientRect();
- } else if (ie && cm.options.lineWrapping) {
- var rects = range(node, start, end).getClientRects();
- if (rects.length)
- rect = rects[bias == "right" ? rects.length - 1 : 0];
- else
- rect = nullRect;
- } else {
- rect = range(node, start, end).getBoundingClientRect();
- }
- } else { // If it is a widget, simply get the box for the whole widget.
- if (start > 0)
- collapse = bias = "right";
- var rects;
- if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
- rect = rects[bias == "right" ? rects.length - 1 : 0];
- else
- rect = node.getBoundingClientRect();
- }
- if (ie_upto8 && !start && (!rect || !rect.left && !rect.right)) {
- var rSpan = node.parentNode.getClientRects()[0];
- if (rSpan)
- rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom};
- else
- rect = nullRect;
- }
-
- var top, bot = (rect.bottom + rect.top) / 2 - prepared.rect.top;
- var heights = prepared.view.measure.heights;
- for (var i = 0; i < heights.length - 1; i++)
- if (bot < heights[i])
- break;
- top = i ? heights[i - 1] : 0;
- bot = heights[i];
- var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
- right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
- top: top, bottom: bot};
- if (!rect.left && !rect.right)
- result.bogus = true;
- return result;
- }
-
- function clearLineMeasurementCacheFor(lineView) {
- if (lineView.measure) {
- lineView.measure.cache = {};
- lineView.measure.heights = null;
- if (lineView.rest)
- for (var i = 0; i < lineView.rest.length; i++)
- lineView.measure.caches[i] = {};
- }
- }
-
- function clearLineMeasurementCache(cm) {
- cm.display.externalMeasure = null;
- removeChildren(cm.display.lineMeasure);
- for (var i = 0; i < cm.display.view.length; i++)
- clearLineMeasurementCacheFor(cm.display.view[i]);
- }
-
- function clearCaches(cm) {
- clearLineMeasurementCache(cm);
- cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
- if (!cm.options.lineWrapping)
- cm.display.maxLineChanged = true;
- cm.display.lineNumChars = null;
- }
-
- function pageScrollX() {
- return window.pageXOffset || (document.documentElement || document.body).scrollLeft;
- }
- function pageScrollY() {
- return window.pageYOffset || (document.documentElement || document.body).scrollTop;
- }
-
- // Converts a {top, bottom, left, right} box from line-local
- // coordinates into another coordinate system. Context may be one of
- // "line", "div" (display.lineDiv), "local"/null (editor), or "page".
- function intoCoordSystem(cm, lineObj, rect, context) {
- if (lineObj.widgets)
- for (var i = 0; i < lineObj.widgets.length; ++i)
- if (lineObj.widgets[i].above) {
- var size = widgetHeight(lineObj.widgets[i]);
- rect.top += size;
- rect.bottom += size;
- }
- if (context == "line")
- return rect;
- if (!context)
- context = "local";
- var yOff = heightAtLine(lineObj);
- if (context == "local")
- yOff += paddingTop(cm.display);
- else
- yOff -= cm.display.viewOffset;
- if (context == "page" || context == "window") {
- var lOff = cm.display.lineSpace.getBoundingClientRect();
- yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
- var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
- rect.left += xOff;
- rect.right += xOff;
- }
- rect.top += yOff;
- rect.bottom += yOff;
- return rect;
- }
-
- // Coverts a box from "div" coords to another coordinate system.
- // Context may be "window", "page", "div", or "local"/null.
- function fromCoordSystem(cm, coords, context) {
- if (context == "div")
- return coords;
- var left = coords.left, top = coords.top;
- // First move into "page" coordinate system
- if (context == "page") {
- left -= pageScrollX();
- top -= pageScrollY();
- } else if (context == "local" || !context) {
- var localBox = cm.display.sizer.getBoundingClientRect();
- left += localBox.left;
- top += localBox.top;
- }
-
- var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
- return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};
- }
-
- function charCoords(cm, pos, context, lineObj, bias) {
- if (!lineObj)
- lineObj = getLine(cm.doc, pos.line);
- return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context);
- }
-
- // Returns a box for a given cursor position, which may have an
- // 'other' property containing the position of the secondary cursor
- // on a bidi boundary.
- function cursorCoords(cm, pos, context, lineObj, preparedMeasure) {
- lineObj = lineObj || getLine(cm.doc, pos.line);
- if (!preparedMeasure)
- preparedMeasure = prepareMeasureForLine(cm, lineObj);
- function get(ch, right) {
- var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left");
- if (right)
- m.left = m.right;
- else
- m.right = m.left;
- return intoCoordSystem(cm, lineObj, m, context);
- }
- function getBidi(ch, partPos) {
- var part = order[partPos], right = part.level % 2;
- if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
- part = order[--partPos];
- ch = bidiRight(part) - (part.level % 2 ? 0 : 1);
- right = true;
- } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
- part = order[++partPos];
- ch = bidiLeft(part) - part.level % 2;
- right = false;
- }
- if (right && ch == part.to && ch > part.from)
- return get(ch - 1);
- return get(ch, right);
- }
- var order = getOrder(lineObj), ch = pos.ch;
- if (!order)
- return get(ch);
- var partPos = getBidiPartAt(order, ch);
- var val = getBidi(ch, partPos);
- if (bidiOther != null)
- val.other = getBidi(ch, bidiOther);
- return val;
- }
-
- // Used to cheaply estimate the coordinates for a position. Used for
- // intermediate scroll updates.
- function estimateCoords(cm, pos) {
- var left = 0, pos = clipPos(cm.doc, pos);
- if (!cm.options.lineWrapping)
- left = charWidth(cm.display) * pos.ch;
- var lineObj = getLine(cm.doc, pos.line);
- var top = heightAtLine(lineObj) + paddingTop(cm.display);
- return {left: left, right: left, top: top, bottom: top + lineObj.height};
- }
-
- // Positions returned by coordsChar contain some extra information.
- // xRel is the relative x position of the input coordinates compared
- // to the found position (so xRel > 0 means the coordinates are to
- // the right of the character position, for example). When outside
- // is true, that means the coordinates lie outside the line's
- // vertical range.
- function PosWithInfo(line, ch, outside, xRel) {
- var pos = Pos(line, ch);
- pos.xRel = xRel;
- if (outside)
- pos.outside = true;
- return pos;
- }
-
- // Compute the character position closest to the given coordinates.
- // Input must be lineSpace-local ("div" coordinate system).
- function coordsChar(cm, x, y) {
- var doc = cm.doc;
- y += cm.display.viewOffset;
- if (y < 0)
- return PosWithInfo(doc.first, 0, true, -1);
- var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
- if (lineN > last)
- return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);
- if (x < 0)
- x = 0;
-
- var lineObj = getLine(doc, lineN);
- for (; ; ) {
- var found = coordsCharInner(cm, lineObj, lineN, x, y);
- var merged = collapsedSpanAtEnd(lineObj);
- var mergedPos = merged && merged.find(0, true);
- if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
- lineN = lineNo(lineObj = mergedPos.to.line);
- else
- return found;
- }
- }
-
- function coordsCharInner(cm, lineObj, lineNo, x, y) {
- var innerOff = y - heightAtLine(lineObj);
- var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
- var preparedMeasure = prepareMeasureForLine(cm, lineObj);
-
- function getX(ch) {
- var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure);
- wrongLine = true;
- if (innerOff > sp.bottom)
- return sp.left - adjust;
- else if (innerOff < sp.top)
- return sp.left + adjust;
- else
- wrongLine = false;
- return sp.left;
- }
-
- var bidi = getOrder(lineObj), dist = lineObj.text.length;
- var from = lineLeft(lineObj), to = lineRight(lineObj);
- var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;
-
- if (x > toX)
- return PosWithInfo(lineNo, to, toOutside, 1);
- // Do a binary search between these bounds.
- for (; ; ) {
- if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
- var ch = x < fromX || x - fromX <= toX - x ? from : to;
- var xDiff = x - (ch == from ? fromX : toX);
- while (isExtendingChar(lineObj.text.charAt(ch)))
- ++ch;
- var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
- xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0);
- return pos;
- }
- var step = Math.ceil(dist / 2), middle = from + step;
- if (bidi) {
- middle = from;
- for (var i = 0; i < step; ++i)
- middle = moveVisually(lineObj, middle, 1);
- }
- var middleX = getX(middle);
- if (middleX > x) {
- to = middle;
- toX = middleX;
- if (toOutside = wrongLine)
- toX += 1000;
- dist = step;
- }
- else {
- from = middle;
- fromX = middleX;
- fromOutside = wrongLine;
- dist -= step;
- }
- }
- }
-
- var measureText;
- // Compute the default text height.
- function textHeight(display) {
- if (display.cachedTextHeight != null)
- return display.cachedTextHeight;
- if (measureText == null) {
- measureText = elt("pre");
- // Measure a bunch of lines, for browsers that compute
- // fractional heights.
- for (var i = 0; i < 49; ++i) {
- measureText.appendChild(document.createTextNode("x"));
- measureText.appendChild(elt("br"));
- }
- measureText.appendChild(document.createTextNode("x"));
- }
- removeChildrenAndAdd(display.measure, measureText);
- var height = measureText.offsetHeight / 50;
- if (height > 3)
-
<TRUNCATED>