mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-12-26 01:50:28 +00:00
5917 lines
227 KiB
JavaScript
5917 lines
227 KiB
JavaScript
// CodeMirror version 3.19.1
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//
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// CodeMirror is the only global var we claim
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window.CodeMirror = (function() {
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"use strict";
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// BROWSER SNIFFING
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// Crude, but necessary to handle a number of hard-to-feature-detect
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// bugs and behavior differences.
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var gecko = /gecko\/\d/i.test(navigator.userAgent);
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var ie = /MSIE \d/.test(navigator.userAgent);
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var ie_lt8 = ie && (document.documentMode == null || document.documentMode < 8);
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var ie_lt9 = ie && (document.documentMode == null || document.documentMode < 9);
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var webkit = /WebKit\//.test(navigator.userAgent);
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var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
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var chrome = /Chrome\//.test(navigator.userAgent);
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var opera = /Opera\//.test(navigator.userAgent);
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var safari = /Apple Computer/.test(navigator.vendor);
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var khtml = /KHTML\//.test(navigator.userAgent);
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var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent);
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var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
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var phantom = /PhantomJS/.test(navigator.userAgent);
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var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
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// This is woefully incomplete. Suggestions for alternative methods welcome.
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var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent);
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var mac = ios || /Mac/.test(navigator.platform);
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var windows = /win/i.test(navigator.platform);
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var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
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if (opera_version) opera_version = Number(opera_version[1]);
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if (opera_version && opera_version >= 15) { opera = false; webkit = true; }
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// Some browsers use the wrong event properties to signal cmd/ctrl on OS X
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var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11));
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var captureMiddleClick = gecko || (ie && !ie_lt9);
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// Optimize some code when these features are not used
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var sawReadOnlySpans = false, sawCollapsedSpans = false;
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// CONSTRUCTOR
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function CodeMirror(place, options) {
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if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);
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this.options = options = options || {};
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// Determine effective options based on given values and defaults.
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for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt))
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options[opt] = defaults[opt];
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setGuttersForLineNumbers(options);
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var docStart = typeof options.value == "string" ? 0 : options.value.first;
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var display = this.display = makeDisplay(place, docStart);
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display.wrapper.CodeMirror = this;
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updateGutters(this);
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if (options.autofocus && !mobile) focusInput(this);
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this.state = {keyMaps: [],
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overlays: [],
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modeGen: 0,
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overwrite: false, focused: false,
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suppressEdits: false, pasteIncoming: false,
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draggingText: false,
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highlight: new Delayed()};
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themeChanged(this);
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if (options.lineWrapping)
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this.display.wrapper.className += " CodeMirror-wrap";
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var doc = options.value;
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if (typeof doc == "string") doc = new Doc(options.value, options.mode);
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operation(this, attachDoc)(this, doc);
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// Override magic textarea content restore that IE sometimes does
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// on our hidden textarea on reload
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if (ie) setTimeout(bind(resetInput, this, true), 20);
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registerEventHandlers(this);
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// IE throws unspecified error in certain cases, when
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// trying to access activeElement before onload
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var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { }
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if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20);
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else onBlur(this);
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operation(this, function() {
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for (var opt in optionHandlers)
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if (optionHandlers.propertyIsEnumerable(opt))
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optionHandlers[opt](this, options[opt], Init);
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for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
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})();
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}
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// DISPLAY CONSTRUCTOR
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function makeDisplay(place, docStart) {
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var d = {};
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var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none; font-size: 4px;");
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if (webkit) input.style.width = "1000px";
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else input.setAttribute("wrap", "off");
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// if border: 0; -- iOS fails to open keyboard (issue #1287)
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if (ios) input.style.border = "1px solid black";
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input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false");
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// Wraps and hides input textarea
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d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
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// The actual fake scrollbars.
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d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar");
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d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar");
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d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
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d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
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// DIVs containing the selection and the actual code
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d.lineDiv = elt("div", null, "CodeMirror-code");
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d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
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// Blinky cursor, and element used to ensure cursor fits at the end of a line
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d.cursor = elt("div", "\u00a0", "CodeMirror-cursor");
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// Secondary cursor, shown when on a 'jump' in bi-directional text
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d.otherCursor = elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor");
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// Used to measure text size
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d.measure = elt("div", null, "CodeMirror-measure");
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// Wraps everything that needs to exist inside the vertically-padded coordinate system
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d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor],
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null, "position: relative; outline: none");
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// Moved around its parent to cover visible view
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d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
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// Set to the height of the text, causes scrolling
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d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
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// D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers
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d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;");
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// Will contain the gutters, if any
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d.gutters = elt("div", null, "CodeMirror-gutters");
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d.lineGutter = null;
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// Provides scrolling
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d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
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d.scroller.setAttribute("tabIndex", "-1");
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// The element in which the editor lives.
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d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV,
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d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
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// Work around IE7 z-index bug
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if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
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if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper);
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// Needed to hide big blue blinking cursor on Mobile Safari
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if (ios) input.style.width = "0px";
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if (!webkit) d.scroller.draggable = true;
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// Needed to handle Tab key in KHTML
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if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; }
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// Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
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else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px";
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// Current visible range (may be bigger than the view window).
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d.viewOffset = d.lastSizeC = 0;
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d.showingFrom = d.showingTo = docStart;
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// Used to only resize the line number gutter when necessary (when
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// the amount of lines crosses a boundary that makes its width change)
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d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
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// See readInput and resetInput
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d.prevInput = "";
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// Set to true when a non-horizontal-scrolling widget is added. As
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// an optimization, widget aligning is skipped when d is false.
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d.alignWidgets = false;
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// Flag that indicates whether we currently expect input to appear
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// (after some event like 'keypress' or 'input') and are polling
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// intensively.
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d.pollingFast = false;
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// Self-resetting timeout for the poller
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d.poll = new Delayed();
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d.cachedCharWidth = d.cachedTextHeight = null;
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d.measureLineCache = [];
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d.measureLineCachePos = 0;
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// Tracks when resetInput has punted to just putting a short
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// string instead of the (large) selection.
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d.inaccurateSelection = false;
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// Tracks the maximum line length so that the horizontal scrollbar
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// can be kept static when scrolling.
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d.maxLine = null;
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d.maxLineLength = 0;
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d.maxLineChanged = false;
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// Used for measuring wheel scrolling granularity
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d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;
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return d;
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}
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// STATE UPDATES
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// Used to get the editor into a consistent state again when options change.
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function loadMode(cm) {
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cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption);
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cm.doc.iter(function(line) {
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if (line.stateAfter) line.stateAfter = null;
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if (line.styles) line.styles = null;
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});
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cm.doc.frontier = cm.doc.first;
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startWorker(cm, 100);
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cm.state.modeGen++;
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if (cm.curOp) regChange(cm);
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}
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function wrappingChanged(cm) {
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if (cm.options.lineWrapping) {
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cm.display.wrapper.className += " CodeMirror-wrap";
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cm.display.sizer.style.minWidth = "";
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} else {
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cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", "");
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computeMaxLength(cm);
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}
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estimateLineHeights(cm);
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regChange(cm);
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clearCaches(cm);
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setTimeout(function(){updateScrollbars(cm);}, 100);
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}
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function estimateHeight(cm) {
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var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
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var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
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return function(line) {
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if (lineIsHidden(cm.doc, line))
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return 0;
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else if (wrapping)
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return (Math.ceil(line.text.length / perLine) || 1) * th;
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else
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return th;
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};
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}
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function estimateLineHeights(cm) {
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var doc = cm.doc, est = estimateHeight(cm);
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doc.iter(function(line) {
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var estHeight = est(line);
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if (estHeight != line.height) updateLineHeight(line, estHeight);
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});
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}
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function keyMapChanged(cm) {
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var map = keyMap[cm.options.keyMap], style = map.style;
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cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
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(style ? " cm-keymap-" + style : "");
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cm.state.disableInput = map.disableInput;
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}
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function themeChanged(cm) {
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cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
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cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
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clearCaches(cm);
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}
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function guttersChanged(cm) {
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updateGutters(cm);
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regChange(cm);
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setTimeout(function(){alignHorizontally(cm);}, 20);
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}
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function updateGutters(cm) {
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var gutters = cm.display.gutters, specs = cm.options.gutters;
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removeChildren(gutters);
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for (var i = 0; i < specs.length; ++i) {
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var gutterClass = specs[i];
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var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
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if (gutterClass == "CodeMirror-linenumbers") {
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cm.display.lineGutter = gElt;
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gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
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}
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}
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gutters.style.display = i ? "" : "none";
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}
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function lineLength(doc, line) {
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if (line.height == 0) return 0;
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var len = line.text.length, merged, cur = line;
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while (merged = collapsedSpanAtStart(cur)) {
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var found = merged.find();
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cur = getLine(doc, found.from.line);
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len += found.from.ch - found.to.ch;
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}
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cur = line;
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while (merged = collapsedSpanAtEnd(cur)) {
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var found = merged.find();
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len -= cur.text.length - found.from.ch;
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cur = getLine(doc, found.to.line);
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len += cur.text.length - found.to.ch;
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}
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return len;
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}
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function computeMaxLength(cm) {
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var d = cm.display, doc = cm.doc;
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d.maxLine = getLine(doc, doc.first);
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d.maxLineLength = lineLength(doc, d.maxLine);
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d.maxLineChanged = true;
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doc.iter(function(line) {
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var len = lineLength(doc, line);
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if (len > d.maxLineLength) {
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d.maxLineLength = len;
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d.maxLine = line;
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}
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});
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}
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// Make sure the gutters options contains the element
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// "CodeMirror-linenumbers" when the lineNumbers option is true.
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function setGuttersForLineNumbers(options) {
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var found = indexOf(options.gutters, "CodeMirror-linenumbers");
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if (found == -1 && options.lineNumbers) {
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options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
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} else if (found > -1 && !options.lineNumbers) {
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options.gutters = options.gutters.slice(0);
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options.gutters.splice(found, 1);
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}
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}
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// SCROLLBARS
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// Re-synchronize the fake scrollbars with the actual size of the
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// content. Optionally force a scrollTop.
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function updateScrollbars(cm) {
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var d = cm.display, docHeight = cm.doc.height;
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var totalHeight = docHeight + paddingVert(d);
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d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px";
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d.gutters.style.height = Math.max(totalHeight, d.scroller.clientHeight - scrollerCutOff) + "px";
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var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight);
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var needsH = d.scroller.scrollWidth > (d.scroller.clientWidth + 1);
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var needsV = scrollHeight > (d.scroller.clientHeight + 1);
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if (needsV) {
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d.scrollbarV.style.display = "block";
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d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0";
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d.scrollbarV.firstChild.style.height =
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(scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px";
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} else {
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d.scrollbarV.style.display = "";
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d.scrollbarV.firstChild.style.height = "0";
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}
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if (needsH) {
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d.scrollbarH.style.display = "block";
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d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0";
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d.scrollbarH.firstChild.style.width =
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(d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px";
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} else {
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d.scrollbarH.style.display = "";
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d.scrollbarH.firstChild.style.width = "0";
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}
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if (needsH && needsV) {
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d.scrollbarFiller.style.display = "block";
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d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px";
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} else d.scrollbarFiller.style.display = "";
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if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
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d.gutterFiller.style.display = "block";
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d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px";
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d.gutterFiller.style.width = d.gutters.offsetWidth + "px";
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} else d.gutterFiller.style.display = "";
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if (mac_geLion && scrollbarWidth(d.measure) === 0) {
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d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px";
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d.scrollbarV.style.pointerEvents = d.scrollbarH.style.pointerEvents = "none";
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}
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}
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function visibleLines(display, doc, viewPort) {
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var top = display.scroller.scrollTop, height = display.wrapper.clientHeight;
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if (typeof viewPort == "number") top = viewPort;
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else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;}
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top = Math.floor(top - paddingTop(display));
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var bottom = Math.ceil(top + height);
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return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)};
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}
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// LINE NUMBERS
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function alignHorizontally(cm) {
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var display = cm.display;
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if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return;
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var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
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var gutterW = display.gutters.offsetWidth, l = comp + "px";
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for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) {
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for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l;
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}
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if (cm.options.fixedGutter)
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display.gutters.style.left = (comp + gutterW) + "px";
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}
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function maybeUpdateLineNumberWidth(cm) {
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if (!cm.options.lineNumbers) return false;
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var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
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if (last.length != display.lineNumChars) {
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var test = display.measure.appendChild(elt("div", [elt("div", last)],
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"CodeMirror-linenumber CodeMirror-gutter-elt"));
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var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
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display.lineGutter.style.width = "";
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display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding);
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display.lineNumWidth = display.lineNumInnerWidth + padding;
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display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
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display.lineGutter.style.width = display.lineNumWidth + "px";
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return true;
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}
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return false;
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}
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function lineNumberFor(options, i) {
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return String(options.lineNumberFormatter(i + options.firstLineNumber));
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}
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function compensateForHScroll(display) {
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return getRect(display.scroller).left - getRect(display.sizer).left;
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}
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// DISPLAY DRAWING
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|
|
|
function updateDisplay(cm, changes, viewPort, forced) {
|
|
var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo, updated;
|
|
var visible = visibleLines(cm.display, cm.doc, viewPort);
|
|
for (var first = true;; first = false) {
|
|
var oldWidth = cm.display.scroller.clientWidth;
|
|
if (!updateDisplayInner(cm, changes, visible, forced)) break;
|
|
updated = true;
|
|
changes = [];
|
|
updateSelection(cm);
|
|
updateScrollbars(cm);
|
|
if (first && cm.options.lineWrapping && oldWidth != cm.display.scroller.clientWidth) {
|
|
forced = true;
|
|
continue;
|
|
}
|
|
forced = false;
|
|
|
|
// Clip forced viewport to actual scrollable area
|
|
if (viewPort)
|
|
viewPort = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight,
|
|
typeof viewPort == "number" ? viewPort : viewPort.top);
|
|
visible = visibleLines(cm.display, cm.doc, viewPort);
|
|
if (visible.from >= cm.display.showingFrom && visible.to <= cm.display.showingTo)
|
|
break;
|
|
}
|
|
|
|
if (updated) {
|
|
signalLater(cm, "update", cm);
|
|
if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo)
|
|
signalLater(cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo);
|
|
}
|
|
return updated;
|
|
}
|
|
|
|
// Uses a set of changes plus the current scroll position to
|
|
// determine which DOM updates have to be made, and makes the
|
|
// updates.
|
|
function updateDisplayInner(cm, changes, visible, forced) {
|
|
var display = cm.display, doc = cm.doc;
|
|
if (!display.wrapper.clientWidth) {
|
|
display.showingFrom = display.showingTo = doc.first;
|
|
display.viewOffset = 0;
|
|
return;
|
|
}
|
|
|
|
// Bail out if the visible area is already rendered and nothing changed.
|
|
if (!forced && changes.length == 0 &&
|
|
visible.from > display.showingFrom && visible.to < display.showingTo)
|
|
return;
|
|
|
|
if (maybeUpdateLineNumberWidth(cm))
|
|
changes = [{from: doc.first, to: doc.first + doc.size}];
|
|
var gutterW = display.sizer.style.marginLeft = display.gutters.offsetWidth + "px";
|
|
display.scrollbarH.style.left = cm.options.fixedGutter ? gutterW : "0";
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|
|
|
// Used to determine which lines need their line numbers updated
|
|
var positionsChangedFrom = Infinity;
|
|
if (cm.options.lineNumbers)
|
|
for (var i = 0; i < changes.length; ++i)
|
|
if (changes[i].diff && changes[i].from < positionsChangedFrom) { positionsChangedFrom = changes[i].from; }
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|
|
|
var end = doc.first + doc.size;
|
|
var from = Math.max(visible.from - cm.options.viewportMargin, doc.first);
|
|
var to = Math.min(end, visible.to + cm.options.viewportMargin);
|
|
if (display.showingFrom < from && from - display.showingFrom < 20) from = Math.max(doc.first, display.showingFrom);
|
|
if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(end, display.showingTo);
|
|
if (sawCollapsedSpans) {
|
|
from = lineNo(visualLine(doc, getLine(doc, from)));
|
|
while (to < end && lineIsHidden(doc, getLine(doc, to))) ++to;
|
|
}
|
|
|
|
// Create a range of theoretically intact lines, and punch holes
|
|
// in that using the change info.
|
|
var intact = [{from: Math.max(display.showingFrom, doc.first),
|
|
to: Math.min(display.showingTo, end)}];
|
|
if (intact[0].from >= intact[0].to) intact = [];
|
|
else intact = computeIntact(intact, changes);
|
|
// When merged lines are present, we might have to reduce the
|
|
// intact ranges because changes in continued fragments of the
|
|
// intact lines do require the lines to be redrawn.
|
|
if (sawCollapsedSpans)
|
|
for (var i = 0; i < intact.length; ++i) {
|
|
var range = intact[i], merged;
|
|
while (merged = collapsedSpanAtEnd(getLine(doc, range.to - 1))) {
|
|
var newTo = merged.find().from.line;
|
|
if (newTo > range.from) range.to = newTo;
|
|
else { intact.splice(i--, 1); break; }
|
|
}
|
|
}
|
|
|
|
// Clip off the parts that won't be visible
|
|
var intactLines = 0;
|
|
for (var i = 0; i < intact.length; ++i) {
|
|
var range = intact[i];
|
|
if (range.from < from) range.from = from;
|
|
if (range.to > to) range.to = to;
|
|
if (range.from >= range.to) intact.splice(i--, 1);
|
|
else intactLines += range.to - range.from;
|
|
}
|
|
if (!forced && intactLines == to - from && from == display.showingFrom && to == display.showingTo) {
|
|
updateViewOffset(cm);
|
|
return;
|
|
}
|
|
intact.sort(function(a, b) {return a.from - b.from;});
|
|
|
|
// Avoid crashing on IE's "unspecified error" when in iframes
|
|
try {
|
|
var focused = document.activeElement;
|
|
} catch(e) {}
|
|
if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none";
|
|
patchDisplay(cm, from, to, intact, positionsChangedFrom);
|
|
display.lineDiv.style.display = "";
|
|
if (focused && document.activeElement != focused && focused.offsetHeight) focused.focus();
|
|
|
|
var different = from != display.showingFrom || to != display.showingTo ||
|
|
display.lastSizeC != display.wrapper.clientHeight;
|
|
// This is just a bogus formula that detects when the editor is
|
|
// resized or the font size changes.
|
|
if (different) {
|
|
display.lastSizeC = display.wrapper.clientHeight;
|
|
startWorker(cm, 400);
|
|
}
|
|
display.showingFrom = from; display.showingTo = to;
|
|
|
|
updateHeightsInViewport(cm);
|
|
updateViewOffset(cm);
|
|
|
|
return true;
|
|
}
|
|
|
|
function updateHeightsInViewport(cm) {
|
|
var display = cm.display;
|
|
var prevBottom = display.lineDiv.offsetTop;
|
|
for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) {
|
|
if (ie_lt8) {
|
|
var bot = node.offsetTop + node.offsetHeight;
|
|
height = bot - prevBottom;
|
|
prevBottom = bot;
|
|
} else {
|
|
var box = getRect(node);
|
|
height = box.bottom - box.top;
|
|
}
|
|
var diff = node.lineObj.height - height;
|
|
if (height < 2) height = textHeight(display);
|
|
if (diff > .001 || diff < -.001) {
|
|
updateLineHeight(node.lineObj, height);
|
|
var widgets = node.lineObj.widgets;
|
|
if (widgets) for (var i = 0; i < widgets.length; ++i)
|
|
widgets[i].height = widgets[i].node.offsetHeight;
|
|
}
|
|
}
|
|
}
|
|
|
|
function updateViewOffset(cm) {
|
|
var off = cm.display.viewOffset = heightAtLine(cm, getLine(cm.doc, cm.display.showingFrom));
|
|
// Position the mover div to align with the current virtual scroll position
|
|
cm.display.mover.style.top = off + "px";
|
|
}
|
|
|
|
function computeIntact(intact, changes) {
|
|
for (var i = 0, l = changes.length || 0; i < l; ++i) {
|
|
var change = changes[i], intact2 = [], diff = change.diff || 0;
|
|
for (var j = 0, l2 = intact.length; j < l2; ++j) {
|
|
var range = intact[j];
|
|
if (change.to <= range.from && change.diff) {
|
|
intact2.push({from: range.from + diff, to: range.to + diff});
|
|
} else if (change.to <= range.from || change.from >= range.to) {
|
|
intact2.push(range);
|
|
} else {
|
|
if (change.from > range.from)
|
|
intact2.push({from: range.from, to: change.from});
|
|
if (change.to < range.to)
|
|
intact2.push({from: change.to + diff, to: range.to + diff});
|
|
}
|
|
}
|
|
intact = intact2;
|
|
}
|
|
return intact;
|
|
}
|
|
|
|
function getDimensions(cm) {
|
|
var d = cm.display, left = {}, width = {};
|
|
for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
|
|
left[cm.options.gutters[i]] = n.offsetLeft;
|
|
width[cm.options.gutters[i]] = n.offsetWidth;
|
|
}
|
|
return {fixedPos: compensateForHScroll(d),
|
|
gutterTotalWidth: d.gutters.offsetWidth,
|
|
gutterLeft: left,
|
|
gutterWidth: width,
|
|
wrapperWidth: d.wrapper.clientWidth};
|
|
}
|
|
|
|
function patchDisplay(cm, from, to, intact, updateNumbersFrom) {
|
|
var dims = getDimensions(cm);
|
|
var display = cm.display, lineNumbers = cm.options.lineNumbers;
|
|
if (!intact.length && (!webkit || !cm.display.currentWheelTarget))
|
|
removeChildren(display.lineDiv);
|
|
var container = display.lineDiv, cur = container.firstChild;
|
|
|
|
function rm(node) {
|
|
var next = node.nextSibling;
|
|
if (webkit && mac && cm.display.currentWheelTarget == node) {
|
|
node.style.display = "none";
|
|
node.lineObj = null;
|
|
} else {
|
|
node.parentNode.removeChild(node);
|
|
}
|
|
return next;
|
|
}
|
|
|
|
var nextIntact = intact.shift(), lineN = from;
|
|
cm.doc.iter(from, to, function(line) {
|
|
if (nextIntact && nextIntact.to == lineN) nextIntact = intact.shift();
|
|
if (lineIsHidden(cm.doc, line)) {
|
|
if (line.height != 0) updateLineHeight(line, 0);
|
|
if (line.widgets && cur && cur.previousSibling) for (var i = 0; i < line.widgets.length; ++i) {
|
|
var w = line.widgets[i];
|
|
if (w.showIfHidden) {
|
|
var prev = cur.previousSibling;
|
|
if (/pre/i.test(prev.nodeName)) {
|
|
var wrap = elt("div", null, null, "position: relative");
|
|
prev.parentNode.replaceChild(wrap, prev);
|
|
wrap.appendChild(prev);
|
|
prev = wrap;
|
|
}
|
|
var wnode = prev.appendChild(elt("div", [w.node], "CodeMirror-linewidget"));
|
|
if (!w.handleMouseEvents) wnode.ignoreEvents = true;
|
|
positionLineWidget(w, wnode, prev, dims);
|
|
}
|
|
}
|
|
} else if (nextIntact && nextIntact.from <= lineN && nextIntact.to > lineN) {
|
|
// This line is intact. Skip to the actual node. Update its
|
|
// line number if needed.
|
|
while (cur.lineObj != line) cur = rm(cur);
|
|
if (lineNumbers && updateNumbersFrom <= lineN && cur.lineNumber)
|
|
setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineN));
|
|
cur = cur.nextSibling;
|
|
} else {
|
|
// For lines with widgets, make an attempt to find and reuse
|
|
// the existing element, so that widgets aren't needlessly
|
|
// removed and re-inserted into the dom
|
|
if (line.widgets) for (var j = 0, search = cur, reuse; search && j < 20; ++j, search = search.nextSibling)
|
|
if (search.lineObj == line && /div/i.test(search.nodeName)) { reuse = search; break; }
|
|
// This line needs to be generated.
|
|
var lineNode = buildLineElement(cm, line, lineN, dims, reuse);
|
|
if (lineNode != reuse) {
|
|
container.insertBefore(lineNode, cur);
|
|
} else {
|
|
while (cur != reuse) cur = rm(cur);
|
|
cur = cur.nextSibling;
|
|
}
|
|
|
|
lineNode.lineObj = line;
|
|
}
|
|
++lineN;
|
|
});
|
|
while (cur) cur = rm(cur);
|
|
}
|
|
|
|
function buildLineElement(cm, line, lineNo, dims, reuse) {
|
|
var built = buildLineContent(cm, line), lineElement = built.pre;
|
|
var markers = line.gutterMarkers, display = cm.display, wrap;
|
|
|
|
var bgClass = built.bgClass ? built.bgClass + " " + (line.bgClass || "") : line.bgClass;
|
|
if (!cm.options.lineNumbers && !markers && !bgClass && !line.wrapClass && !line.widgets)
|
|
return lineElement;
|
|
|
|
// Lines with gutter elements, widgets or a background class need
|
|
// to be wrapped again, and have the extra elements added to the
|
|
// wrapper div
|
|
|
|
if (reuse) {
|
|
reuse.alignable = null;
|
|
var isOk = true, widgetsSeen = 0, insertBefore = null;
|
|
for (var n = reuse.firstChild, next; n; n = next) {
|
|
next = n.nextSibling;
|
|
if (!/\bCodeMirror-linewidget\b/.test(n.className)) {
|
|
reuse.removeChild(n);
|
|
} else {
|
|
for (var i = 0; i < line.widgets.length; ++i) {
|
|
var widget = line.widgets[i];
|
|
if (widget.node == n.firstChild) {
|
|
if (!widget.above && !insertBefore) insertBefore = n;
|
|
positionLineWidget(widget, n, reuse, dims);
|
|
++widgetsSeen;
|
|
break;
|
|
}
|
|
}
|
|
if (i == line.widgets.length) { isOk = false; break; }
|
|
}
|
|
}
|
|
reuse.insertBefore(lineElement, insertBefore);
|
|
if (isOk && widgetsSeen == line.widgets.length) {
|
|
wrap = reuse;
|
|
reuse.className = line.wrapClass || "";
|
|
}
|
|
}
|
|
if (!wrap) {
|
|
wrap = elt("div", null, line.wrapClass, "position: relative");
|
|
wrap.appendChild(lineElement);
|
|
}
|
|
// Kludge to make sure the styled element lies behind the selection (by z-index)
|
|
if (bgClass)
|
|
wrap.insertBefore(elt("div", null, bgClass + " CodeMirror-linebackground"), wrap.firstChild);
|
|
if (cm.options.lineNumbers || markers) {
|
|
var gutterWrap = wrap.insertBefore(elt("div", null, null, "position: absolute; left: " +
|
|
(cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"),
|
|
wrap.firstChild);
|
|
if (cm.options.fixedGutter) (wrap.alignable || (wrap.alignable = [])).push(gutterWrap);
|
|
if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
|
|
wrap.lineNumber = gutterWrap.appendChild(
|
|
elt("div", lineNumberFor(cm.options, lineNo),
|
|
"CodeMirror-linenumber CodeMirror-gutter-elt",
|
|
"left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
|
|
+ display.lineNumInnerWidth + "px"));
|
|
if (markers)
|
|
for (var k = 0; k < cm.options.gutters.length; ++k) {
|
|
var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
|
|
if (found)
|
|
gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
|
|
dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
|
|
}
|
|
}
|
|
if (ie_lt8) wrap.style.zIndex = 2;
|
|
if (line.widgets && wrap != reuse) for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
|
|
var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
|
|
if (!widget.handleMouseEvents) node.ignoreEvents = true;
|
|
positionLineWidget(widget, node, wrap, dims);
|
|
if (widget.above)
|
|
wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement);
|
|
else
|
|
wrap.appendChild(node);
|
|
signalLater(widget, "redraw");
|
|
}
|
|
return wrap;
|
|
}
|
|
|
|
function positionLineWidget(widget, node, wrap, dims) {
|
|
if (widget.noHScroll) {
|
|
(wrap.alignable || (wrap.alignable = [])).push(node);
|
|
var width = dims.wrapperWidth;
|
|
node.style.left = dims.fixedPos + "px";
|
|
if (!widget.coverGutter) {
|
|
width -= dims.gutterTotalWidth;
|
|
node.style.paddingLeft = dims.gutterTotalWidth + "px";
|
|
}
|
|
node.style.width = width + "px";
|
|
}
|
|
if (widget.coverGutter) {
|
|
node.style.zIndex = 5;
|
|
node.style.position = "relative";
|
|
if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
|
|
}
|
|
}
|
|
|
|
// SELECTION / CURSOR
|
|
|
|
function updateSelection(cm) {
|
|
var display = cm.display;
|
|
var collapsed = posEq(cm.doc.sel.from, cm.doc.sel.to);
|
|
if (collapsed || cm.options.showCursorWhenSelecting)
|
|
updateSelectionCursor(cm);
|
|
else
|
|
display.cursor.style.display = display.otherCursor.style.display = "none";
|
|
if (!collapsed)
|
|
updateSelectionRange(cm);
|
|
else
|
|
display.selectionDiv.style.display = "none";
|
|
|
|
// Move the hidden textarea near the cursor to prevent scrolling artifacts
|
|
if (cm.options.moveInputWithCursor) {
|
|
var headPos = cursorCoords(cm, cm.doc.sel.head, "div");
|
|
var wrapOff = getRect(display.wrapper), lineOff = getRect(display.lineDiv);
|
|
display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
|
|
headPos.top + lineOff.top - wrapOff.top)) + "px";
|
|
display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
|
|
headPos.left + lineOff.left - wrapOff.left)) + "px";
|
|
}
|
|
}
|
|
|
|
// No selection, plain cursor
|
|
function updateSelectionCursor(cm) {
|
|
var display = cm.display, pos = cursorCoords(cm, cm.doc.sel.head, "div");
|
|
display.cursor.style.left = pos.left + "px";
|
|
display.cursor.style.top = pos.top + "px";
|
|
display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
|
|
display.cursor.style.display = "";
|
|
|
|
if (pos.other) {
|
|
display.otherCursor.style.display = "";
|
|
display.otherCursor.style.left = pos.other.left + "px";
|
|
display.otherCursor.style.top = pos.other.top + "px";
|
|
display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
|
|
} else { display.otherCursor.style.display = "none"; }
|
|
}
|
|
|
|
// Highlight selection
|
|
function updateSelectionRange(cm) {
|
|
var display = cm.display, doc = cm.doc, sel = cm.doc.sel;
|
|
var fragment = document.createDocumentFragment();
|
|
var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display);
|
|
|
|
function add(left, top, width, bottom) {
|
|
if (top < 0) top = 0;
|
|
fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
|
|
"px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) +
|
|
"px; height: " + (bottom - top) + "px"));
|
|
}
|
|
|
|
function drawForLine(line, fromArg, toArg) {
|
|
var lineObj = getLine(doc, line);
|
|
var lineLen = lineObj.text.length;
|
|
var start, end;
|
|
function coords(ch, bias) {
|
|
return charCoords(cm, Pos(line, ch), "div", lineObj, bias);
|
|
}
|
|
|
|
iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
|
|
var leftPos = coords(from, "left"), rightPos, left, right;
|
|
if (from == to) {
|
|
rightPos = leftPos;
|
|
left = right = leftPos.left;
|
|
} else {
|
|
rightPos = coords(to - 1, "right");
|
|
if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }
|
|
left = leftPos.left;
|
|
right = rightPos.right;
|
|
}
|
|
if (fromArg == null && from == 0) left = pl;
|
|
if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
|
|
add(left, leftPos.top, null, leftPos.bottom);
|
|
left = pl;
|
|
if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
|
|
}
|
|
if (toArg == null && to == lineLen) right = clientWidth;
|
|
if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
|
|
start = leftPos;
|
|
if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
|
|
end = rightPos;
|
|
if (left < pl + 1) left = pl;
|
|
add(left, rightPos.top, right - left, rightPos.bottom);
|
|
});
|
|
return {start: start, end: end};
|
|
}
|
|
|
|
if (sel.from.line == sel.to.line) {
|
|
drawForLine(sel.from.line, sel.from.ch, sel.to.ch);
|
|
} else {
|
|
var fromLine = getLine(doc, sel.from.line), toLine = getLine(doc, sel.to.line);
|
|
var singleVLine = visualLine(doc, fromLine) == visualLine(doc, toLine);
|
|
var leftEnd = drawForLine(sel.from.line, sel.from.ch, singleVLine ? fromLine.text.length : null).end;
|
|
var rightStart = drawForLine(sel.to.line, singleVLine ? 0 : null, sel.to.ch).start;
|
|
if (singleVLine) {
|
|
if (leftEnd.top < rightStart.top - 2) {
|
|
add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
|
|
add(pl, rightStart.top, rightStart.left, rightStart.bottom);
|
|
} else {
|
|
add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
|
|
}
|
|
}
|
|
if (leftEnd.bottom < rightStart.top)
|
|
add(pl, leftEnd.bottom, null, rightStart.top);
|
|
}
|
|
|
|
removeChildrenAndAdd(display.selectionDiv, fragment);
|
|
display.selectionDiv.style.display = "";
|
|
}
|
|
|
|
// Cursor-blinking
|
|
function restartBlink(cm) {
|
|
if (!cm.state.focused) return;
|
|
var display = cm.display;
|
|
clearInterval(display.blinker);
|
|
var on = true;
|
|
display.cursor.style.visibility = display.otherCursor.style.visibility = "";
|
|
if (cm.options.cursorBlinkRate > 0)
|
|
display.blinker = setInterval(function() {
|
|
display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden";
|
|
}, cm.options.cursorBlinkRate);
|
|
}
|
|
|
|
// HIGHLIGHT WORKER
|
|
|
|
function startWorker(cm, time) {
|
|
if (cm.doc.mode.startState && cm.doc.frontier < cm.display.showingTo)
|
|
cm.state.highlight.set(time, bind(highlightWorker, cm));
|
|
}
|
|
|
|
function highlightWorker(cm) {
|
|
var doc = cm.doc;
|
|
if (doc.frontier < doc.first) doc.frontier = doc.first;
|
|
if (doc.frontier >= cm.display.showingTo) return;
|
|
var end = +new Date + cm.options.workTime;
|
|
var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
|
|
var changed = [], prevChange;
|
|
doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.showingTo + 500), function(line) {
|
|
if (doc.frontier >= cm.display.showingFrom) { // Visible
|
|
var oldStyles = line.styles;
|
|
line.styles = highlightLine(cm, line, state);
|
|
var ischange = !oldStyles || oldStyles.length != line.styles.length;
|
|
for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
|
|
if (ischange) {
|
|
if (prevChange && prevChange.end == doc.frontier) prevChange.end++;
|
|
else changed.push(prevChange = {start: doc.frontier, end: doc.frontier + 1});
|
|
}
|
|
line.stateAfter = copyState(doc.mode, state);
|
|
} else {
|
|
processLine(cm, line, state);
|
|
line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;
|
|
}
|
|
++doc.frontier;
|
|
if (+new Date > end) {
|
|
startWorker(cm, cm.options.workDelay);
|
|
return true;
|
|
}
|
|
});
|
|
if (changed.length)
|
|
operation(cm, function() {
|
|
for (var i = 0; i < changed.length; ++i)
|
|
regChange(this, changed[i].start, changed[i].end);
|
|
})();
|
|
}
|
|
|
|
// Finds the line to start with when starting a parse. Tries to
|
|
// find a line with a stateAfter, so that it can start with a
|
|
// valid state. If that fails, it returns the line with the
|
|
// smallest indentation, which tends to need the least context to
|
|
// parse correctly.
|
|
function findStartLine(cm, n, 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, state);
|
|
var save = pos == n - 1 || pos % 5 == 0 || pos >= display.showingFrom && pos < display.showingTo;
|
|
line.stateAfter = save ? copyState(doc.mode, state) : null;
|
|
++pos;
|
|
});
|
|
if (precise) doc.frontier = pos;
|
|
return state;
|
|
}
|
|
|
|
// POSITION MEASUREMENT
|
|
|
|
function paddingTop(display) {return display.lineSpace.offsetTop;}
|
|
function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
|
|
function paddingLeft(display) {
|
|
var e = removeChildrenAndAdd(display.measure, elt("pre", null, null, "text-align: left")).appendChild(elt("span", "x"));
|
|
return e.offsetLeft;
|
|
}
|
|
|
|
function measureChar(cm, line, ch, data, bias) {
|
|
var dir = -1;
|
|
data = data || measureLine(cm, line);
|
|
if (data.crude) {
|
|
var left = data.left + ch * data.width;
|
|
return {left: left, right: left + data.width, top: data.top, bottom: data.bottom};
|
|
}
|
|
|
|
for (var pos = ch;; pos += dir) {
|
|
var r = data[pos];
|
|
if (r) break;
|
|
if (dir < 0 && pos == 0) dir = 1;
|
|
}
|
|
bias = pos > ch ? "left" : pos < ch ? "right" : bias;
|
|
if (bias == "left" && r.leftSide) r = r.leftSide;
|
|
else if (bias == "right" && r.rightSide) r = r.rightSide;
|
|
return {left: pos < ch ? r.right : r.left,
|
|
right: pos > ch ? r.left : r.right,
|
|
top: r.top,
|
|
bottom: r.bottom};
|
|
}
|
|
|
|
function findCachedMeasurement(cm, line) {
|
|
var cache = cm.display.measureLineCache;
|
|
for (var i = 0; i < cache.length; ++i) {
|
|
var memo = cache[i];
|
|
if (memo.text == line.text && memo.markedSpans == line.markedSpans &&
|
|
cm.display.scroller.clientWidth == memo.width &&
|
|
memo.classes == line.textClass + "|" + line.wrapClass)
|
|
return memo;
|
|
}
|
|
}
|
|
|
|
function clearCachedMeasurement(cm, line) {
|
|
var exists = findCachedMeasurement(cm, line);
|
|
if (exists) exists.text = exists.measure = exists.markedSpans = null;
|
|
}
|
|
|
|
function measureLine(cm, line) {
|
|
// First look in the cache
|
|
var cached = findCachedMeasurement(cm, line);
|
|
if (cached) return cached.measure;
|
|
|
|
// Failing that, recompute and store result in cache
|
|
var measure = measureLineInner(cm, line);
|
|
var cache = cm.display.measureLineCache;
|
|
var memo = {text: line.text, width: cm.display.scroller.clientWidth,
|
|
markedSpans: line.markedSpans, measure: measure,
|
|
classes: line.textClass + "|" + line.wrapClass};
|
|
if (cache.length == 16) cache[++cm.display.measureLineCachePos % 16] = memo;
|
|
else cache.push(memo);
|
|
return measure;
|
|
}
|
|
|
|
function measureLineInner(cm, line) {
|
|
if (!cm.options.lineWrapping && line.text.length >= cm.options.crudeMeasuringFrom)
|
|
return crudelyMeasureLine(cm, line);
|
|
|
|
var display = cm.display, measure = emptyArray(line.text.length);
|
|
var pre = buildLineContent(cm, line, measure, true).pre;
|
|
|
|
// IE does not cache element positions of inline elements between
|
|
// calls to getBoundingClientRect. This makes the loop below,
|
|
// which gathers the positions of all the characters on the line,
|
|
// do an amount of layout work quadratic to the number of
|
|
// characters. When line wrapping is off, we try to improve things
|
|
// by first subdividing the line into a bunch of inline blocks, so
|
|
// that IE can reuse most of the layout information from caches
|
|
// for those blocks. This does interfere with line wrapping, so it
|
|
// doesn't work when wrapping is on, but in that case the
|
|
// situation is slightly better, since IE does cache line-wrapping
|
|
// information and only recomputes per-line.
|
|
if (ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) {
|
|
var fragment = document.createDocumentFragment();
|
|
var chunk = 10, n = pre.childNodes.length;
|
|
for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) {
|
|
var wrap = elt("div", null, null, "display: inline-block");
|
|
for (var j = 0; j < chunk && n; ++j) {
|
|
wrap.appendChild(pre.firstChild);
|
|
--n;
|
|
}
|
|
fragment.appendChild(wrap);
|
|
}
|
|
pre.appendChild(fragment);
|
|
}
|
|
|
|
removeChildrenAndAdd(display.measure, pre);
|
|
|
|
var outer = getRect(display.lineDiv);
|
|
var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight;
|
|
// Work around an IE7/8 bug where it will sometimes have randomly
|
|
// replaced our pre with a clone at this point.
|
|
if (ie_lt9 && display.measure.first != pre)
|
|
removeChildrenAndAdd(display.measure, pre);
|
|
|
|
function measureRect(rect) {
|
|
var top = rect.top - outer.top, bot = rect.bottom - outer.top;
|
|
if (bot > maxBot) bot = maxBot;
|
|
if (top < 0) top = 0;
|
|
for (var i = vranges.length - 2; i >= 0; i -= 2) {
|
|
var rtop = vranges[i], rbot = vranges[i+1];
|
|
if (rtop > bot || rbot < top) continue;
|
|
if (rtop <= top && rbot >= bot ||
|
|
top <= rtop && bot >= rbot ||
|
|
Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) {
|
|
vranges[i] = Math.min(top, rtop);
|
|
vranges[i+1] = Math.max(bot, rbot);
|
|
break;
|
|
}
|
|
}
|
|
if (i < 0) { i = vranges.length; vranges.push(top, bot); }
|
|
return {left: rect.left - outer.left,
|
|
right: rect.right - outer.left,
|
|
top: i, bottom: null};
|
|
}
|
|
function finishRect(rect) {
|
|
rect.bottom = vranges[rect.top+1];
|
|
rect.top = vranges[rect.top];
|
|
}
|
|
|
|
for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) {
|
|
var node = cur, rect = null;
|
|
// A widget might wrap, needs special care
|
|
if (/\bCodeMirror-widget\b/.test(cur.className) && cur.getClientRects) {
|
|
if (cur.firstChild.nodeType == 1) node = cur.firstChild;
|
|
var rects = node.getClientRects();
|
|
if (rects.length > 1) {
|
|
rect = data[i] = measureRect(rects[0]);
|
|
rect.rightSide = measureRect(rects[rects.length - 1]);
|
|
}
|
|
}
|
|
if (!rect) rect = data[i] = measureRect(getRect(node));
|
|
if (cur.measureRight) rect.right = getRect(cur.measureRight).left;
|
|
if (cur.leftSide) rect.leftSide = measureRect(getRect(cur.leftSide));
|
|
}
|
|
removeChildren(cm.display.measure);
|
|
for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) {
|
|
finishRect(cur);
|
|
if (cur.leftSide) finishRect(cur.leftSide);
|
|
if (cur.rightSide) finishRect(cur.rightSide);
|
|
}
|
|
return data;
|
|
}
|
|
|
|
function crudelyMeasureLine(cm, line) {
|
|
var copy = new Line(line.text.slice(0, 100), null);
|
|
if (line.textClass) copy.textClass = line.textClass;
|
|
var measure = measureLineInner(cm, copy);
|
|
var left = measureChar(cm, copy, 0, measure, "left");
|
|
var right = measureChar(cm, copy, 99, measure, "right");
|
|
return {crude: true, top: left.top, left: left.left, bottom: left.bottom, width: (right.right - left.left) / 100};
|
|
}
|
|
|
|
function measureLineWidth(cm, line) {
|
|
var hasBadSpan = false;
|
|
if (line.markedSpans) for (var i = 0; i < line.markedSpans; ++i) {
|
|
var sp = line.markedSpans[i];
|
|
if (sp.collapsed && (sp.to == null || sp.to == line.text.length)) hasBadSpan = true;
|
|
}
|
|
var cached = !hasBadSpan && findCachedMeasurement(cm, line);
|
|
if (cached || line.text.length >= cm.options.crudeMeasuringFrom)
|
|
return measureChar(cm, line, line.text.length, cached && cached.measure, "right").right;
|
|
|
|
var pre = buildLineContent(cm, line, null, true).pre;
|
|
var end = pre.appendChild(zeroWidthElement(cm.display.measure));
|
|
removeChildrenAndAdd(cm.display.measure, pre);
|
|
return getRect(end).right - getRect(cm.display.lineDiv).left;
|
|
}
|
|
|
|
function clearCaches(cm) {
|
|
cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0;
|
|
cm.display.cachedCharWidth = cm.display.cachedTextHeight = null;
|
|
if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;
|
|
cm.display.lineNumChars = null;
|
|
}
|
|
|
|
function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; }
|
|
function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; }
|
|
|
|
// Context is one of "line", "div" (display.lineDiv), "local"/null (editor), or "page"
|
|
function intoCoordSystem(cm, lineObj, rect, context) {
|
|
if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
|
|
var size = widgetHeight(lineObj.widgets[i]);
|
|
rect.top += size; rect.bottom += size;
|
|
}
|
|
if (context == "line") return rect;
|
|
if (!context) context = "local";
|
|
var yOff = heightAtLine(cm, lineObj);
|
|
if (context == "local") yOff += paddingTop(cm.display);
|
|
else yOff -= cm.display.viewOffset;
|
|
if (context == "page" || context == "window") {
|
|
var lOff = getRect(cm.display.lineSpace);
|
|
yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
|
|
var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
|
|
rect.left += xOff; rect.right += xOff;
|
|
}
|
|
rect.top += yOff; rect.bottom += yOff;
|
|
return rect;
|
|
}
|
|
|
|
// Context may be "window", "page", "div", or "local"/null
|
|
// Result is in "div" coords
|
|
function fromCoordSystem(cm, coords, context) {
|
|
if (context == "div") return coords;
|
|
var left = coords.left, top = coords.top;
|
|
// First move into "page" coordinate system
|
|
if (context == "page") {
|
|
left -= pageScrollX();
|
|
top -= pageScrollY();
|
|
} else if (context == "local" || !context) {
|
|
var localBox = getRect(cm.display.sizer);
|
|
left += localBox.left;
|
|
top += localBox.top;
|
|
}
|
|
|
|
var lineSpaceBox = getRect(cm.display.lineSpace);
|
|
return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};
|
|
}
|
|
|
|
function charCoords(cm, pos, context, lineObj, bias) {
|
|
if (!lineObj) lineObj = getLine(cm.doc, pos.line);
|
|
return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, null, bias), context);
|
|
}
|
|
|
|
function cursorCoords(cm, pos, context, lineObj, measurement) {
|
|
lineObj = lineObj || getLine(cm.doc, pos.line);
|
|
if (!measurement) measurement = measureLine(cm, lineObj);
|
|
function get(ch, right) {
|
|
var m = measureChar(cm, lineObj, ch, measurement, right ? "right" : "left");
|
|
if (right) m.left = m.right; else m.right = m.left;
|
|
return intoCoordSystem(cm, lineObj, m, context);
|
|
}
|
|
function getBidi(ch, partPos) {
|
|
var part = order[partPos], right = part.level % 2;
|
|
if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
|
|
part = order[--partPos];
|
|
ch = bidiRight(part) - (part.level % 2 ? 0 : 1);
|
|
right = true;
|
|
} else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
|
|
part = order[++partPos];
|
|
ch = bidiLeft(part) - part.level % 2;
|
|
right = false;
|
|
}
|
|
if (right && ch == part.to && ch > part.from) return get(ch - 1);
|
|
return get(ch, right);
|
|
}
|
|
var order = getOrder(lineObj), ch = pos.ch;
|
|
if (!order) return get(ch);
|
|
var partPos = getBidiPartAt(order, ch);
|
|
var val = getBidi(ch, partPos);
|
|
if (bidiOther != null) val.other = getBidi(ch, bidiOther);
|
|
return val;
|
|
}
|
|
|
|
function PosWithInfo(line, ch, outside, xRel) {
|
|
var pos = new Pos(line, ch);
|
|
pos.xRel = xRel;
|
|
if (outside) pos.outside = true;
|
|
return pos;
|
|
}
|
|
|
|
// Coords must be lineSpace-local
|
|
function coordsChar(cm, x, y) {
|
|
var doc = cm.doc;
|
|
y += cm.display.viewOffset;
|
|
if (y < 0) return PosWithInfo(doc.first, 0, true, -1);
|
|
var lineNo = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
|
|
if (lineNo > last)
|
|
return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);
|
|
if (x < 0) x = 0;
|
|
|
|
for (;;) {
|
|
var lineObj = getLine(doc, lineNo);
|
|
var found = coordsCharInner(cm, lineObj, lineNo, x, y);
|
|
var merged = collapsedSpanAtEnd(lineObj);
|
|
var mergedPos = merged && merged.find();
|
|
if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
|
|
lineNo = mergedPos.to.line;
|
|
else
|
|
return found;
|
|
}
|
|
}
|
|
|
|
function coordsCharInner(cm, lineObj, lineNo, x, y) {
|
|
var innerOff = y - heightAtLine(cm, lineObj);
|
|
var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
|
|
var measurement = measureLine(cm, lineObj);
|
|
|
|
function getX(ch) {
|
|
var sp = cursorCoords(cm, Pos(lineNo, ch), "line",
|
|
lineObj, measurement);
|
|
wrongLine = true;
|
|
if (innerOff > sp.bottom) return sp.left - adjust;
|
|
else if (innerOff < sp.top) return sp.left + adjust;
|
|
else wrongLine = false;
|
|
return sp.left;
|
|
}
|
|
|
|
var bidi = getOrder(lineObj), dist = lineObj.text.length;
|
|
var from = lineLeft(lineObj), to = lineRight(lineObj);
|
|
var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;
|
|
|
|
if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1);
|
|
// Do a binary search between these bounds.
|
|
for (;;) {
|
|
if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
|
|
var ch = x < fromX || x - fromX <= toX - x ? from : to;
|
|
var xDiff = x - (ch == from ? fromX : toX);
|
|
while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch;
|
|
var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
|
|
xDiff < 0 ? -1 : xDiff ? 1 : 0);
|
|
return pos;
|
|
}
|
|
var step = Math.ceil(dist / 2), middle = from + step;
|
|
if (bidi) {
|
|
middle = from;
|
|
for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
|
|
}
|
|
var middleX = getX(middle);
|
|
if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;}
|
|
else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;}
|
|
}
|
|
}
|
|
|
|
var measureText;
|
|
function textHeight(display) {
|
|
if (display.cachedTextHeight != null) return display.cachedTextHeight;
|
|
if (measureText == null) {
|
|
measureText = elt("pre");
|
|
// Measure a bunch of lines, for browsers that compute
|
|
// fractional heights.
|
|
for (var i = 0; i < 49; ++i) {
|
|
measureText.appendChild(document.createTextNode("x"));
|
|
measureText.appendChild(elt("br"));
|
|
}
|
|
measureText.appendChild(document.createTextNode("x"));
|
|
}
|
|
removeChildrenAndAdd(display.measure, measureText);
|
|
var height = measureText.offsetHeight / 50;
|
|
if (height > 3) display.cachedTextHeight = height;
|
|
removeChildren(display.measure);
|
|
return height || 1;
|
|
}
|
|
|
|
function charWidth(display) {
|
|
if (display.cachedCharWidth != null) return display.cachedCharWidth;
|
|
var anchor = elt("span", "x");
|
|
var pre = elt("pre", [anchor]);
|
|
removeChildrenAndAdd(display.measure, pre);
|
|
var width = anchor.offsetWidth;
|
|
if (width > 2) display.cachedCharWidth = width;
|
|
return width || 10;
|
|
}
|
|
|
|
// OPERATIONS
|
|
|
|
// Operations are used to wrap changes in such a way that each
|
|
// change won't have to update the cursor and display (which would
|
|
// be awkward, slow, and error-prone), but instead updates are
|
|
// batched and then all combined and executed at once.
|
|
|
|
var nextOpId = 0;
|
|
function startOperation(cm) {
|
|
cm.curOp = {
|
|
// An array of ranges of lines that have to be updated. See
|
|
// updateDisplay.
|
|
changes: [],
|
|
forceUpdate: false,
|
|
updateInput: null,
|
|
userSelChange: null,
|
|
textChanged: null,
|
|
selectionChanged: false,
|
|
cursorActivity: false,
|
|
updateMaxLine: false,
|
|
updateScrollPos: false,
|
|
id: ++nextOpId
|
|
};
|
|
if (!delayedCallbackDepth++) delayedCallbacks = [];
|
|
}
|
|
|
|
function endOperation(cm) {
|
|
var op = cm.curOp, doc = cm.doc, display = cm.display;
|
|
cm.curOp = null;
|
|
|
|
if (op.updateMaxLine) computeMaxLength(cm);
|
|
if (display.maxLineChanged && !cm.options.lineWrapping && display.maxLine) {
|
|
var width = measureLineWidth(cm, display.maxLine);
|
|
display.sizer.style.minWidth = Math.max(0, width + 3 + scrollerCutOff) + "px";
|
|
display.maxLineChanged = false;
|
|
var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + display.sizer.offsetWidth - display.scroller.clientWidth);
|
|
if (maxScrollLeft < doc.scrollLeft && !op.updateScrollPos)
|
|
setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true);
|
|
}
|
|
var newScrollPos, updated;
|
|
if (op.updateScrollPos) {
|
|
newScrollPos = op.updateScrollPos;
|
|
} else if (op.selectionChanged && display.scroller.clientHeight) { // don't rescroll if not visible
|
|
var coords = cursorCoords(cm, doc.sel.head);
|
|
newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom);
|
|
}
|
|
if (op.changes.length || op.forceUpdate || newScrollPos && newScrollPos.scrollTop != null) {
|
|
updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop, op.forceUpdate);
|
|
if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop;
|
|
}
|
|
if (!updated && op.selectionChanged) updateSelection(cm);
|
|
if (op.updateScrollPos) {
|
|
display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = newScrollPos.scrollTop;
|
|
display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = newScrollPos.scrollLeft;
|
|
alignHorizontally(cm);
|
|
if (op.scrollToPos)
|
|
scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos.from),
|
|
clipPos(cm.doc, op.scrollToPos.to), op.scrollToPos.margin);
|
|
} else if (newScrollPos) {
|
|
scrollCursorIntoView(cm);
|
|
}
|
|
if (op.selectionChanged) restartBlink(cm);
|
|
|
|
if (cm.state.focused && op.updateInput)
|
|
resetInput(cm, op.userSelChange);
|
|
|
|
var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
|
|
if (hidden) for (var i = 0; i < hidden.length; ++i)
|
|
if (!hidden[i].lines.length) signal(hidden[i], "hide");
|
|
if (unhidden) for (var i = 0; i < unhidden.length; ++i)
|
|
if (unhidden[i].lines.length) signal(unhidden[i], "unhide");
|
|
|
|
var delayed;
|
|
if (!--delayedCallbackDepth) {
|
|
delayed = delayedCallbacks;
|
|
delayedCallbacks = null;
|
|
}
|
|
if (op.textChanged)
|
|
signal(cm, "change", cm, op.textChanged);
|
|
if (op.cursorActivity) signal(cm, "cursorActivity", cm);
|
|
if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i]();
|
|
}
|
|
|
|
// Wraps a function in an operation. Returns the wrapped function.
|
|
function operation(cm1, f) {
|
|
return function() {
|
|
var cm = cm1 || this, withOp = !cm.curOp;
|
|
if (withOp) startOperation(cm);
|
|
try { var result = f.apply(cm, arguments); }
|
|
finally { if (withOp) endOperation(cm); }
|
|
return result;
|
|
};
|
|
}
|
|
function docOperation(f) {
|
|
return function() {
|
|
var withOp = this.cm && !this.cm.curOp, result;
|
|
if (withOp) startOperation(this.cm);
|
|
try { result = f.apply(this, arguments); }
|
|
finally { if (withOp) endOperation(this.cm); }
|
|
return result;
|
|
};
|
|
}
|
|
function runInOp(cm, f) {
|
|
var withOp = !cm.curOp, result;
|
|
if (withOp) startOperation(cm);
|
|
try { result = f(); }
|
|
finally { if (withOp) endOperation(cm); }
|
|
return result;
|
|
}
|
|
|
|
function regChange(cm, from, to, lendiff) {
|
|
if (from == null) from = cm.doc.first;
|
|
if (to == null) to = cm.doc.first + cm.doc.size;
|
|
cm.curOp.changes.push({from: from, to: to, diff: lendiff});
|
|
}
|
|
|
|
// INPUT HANDLING
|
|
|
|
function slowPoll(cm) {
|
|
if (cm.display.pollingFast) return;
|
|
cm.display.poll.set(cm.options.pollInterval, function() {
|
|
readInput(cm);
|
|
if (cm.state.focused) slowPoll(cm);
|
|
});
|
|
}
|
|
|
|
function fastPoll(cm) {
|
|
var missed = false;
|
|
cm.display.pollingFast = true;
|
|
function p() {
|
|
var changed = readInput(cm);
|
|
if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);}
|
|
else {cm.display.pollingFast = false; slowPoll(cm);}
|
|
}
|
|
cm.display.poll.set(20, p);
|
|
}
|
|
|
|
// prevInput is a hack to work with IME. If we reset the textarea
|
|
// on every change, that breaks IME. So we look for changes
|
|
// compared to the previous content instead. (Modern browsers have
|
|
// events that indicate IME taking place, but these are not widely
|
|
// supported or compatible enough yet to rely on.)
|
|
function readInput(cm) {
|
|
var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc, sel = doc.sel;
|
|
if (!cm.state.focused || hasSelection(input) || isReadOnly(cm) || cm.state.disableInput) return false;
|
|
if (cm.state.pasteIncoming && cm.state.fakedLastChar) {
|
|
input.value = input.value.substring(0, input.value.length - 1);
|
|
cm.state.fakedLastChar = false;
|
|
}
|
|
var text = input.value;
|
|
if (text == prevInput && posEq(sel.from, sel.to)) return false;
|
|
if (ie && !ie_lt9 && cm.display.inputHasSelection === text) {
|
|
resetInput(cm, true);
|
|
return false;
|
|
}
|
|
|
|
var withOp = !cm.curOp;
|
|
if (withOp) startOperation(cm);
|
|
sel.shift = false;
|
|
var same = 0, l = Math.min(prevInput.length, text.length);
|
|
while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;
|
|
var from = sel.from, to = sel.to;
|
|
if (same < prevInput.length)
|
|
from = Pos(from.line, from.ch - (prevInput.length - same));
|
|
else if (cm.state.overwrite && posEq(from, to) && !cm.state.pasteIncoming)
|
|
to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + (text.length - same)));
|
|
|
|
var updateInput = cm.curOp.updateInput;
|
|
var changeEvent = {from: from, to: to, text: splitLines(text.slice(same)),
|
|
origin: cm.state.pasteIncoming ? "paste" : "+input"};
|
|
makeChange(cm.doc, changeEvent, "end");
|
|
cm.curOp.updateInput = updateInput;
|
|
signalLater(cm, "inputRead", cm, changeEvent);
|
|
|
|
if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = "";
|
|
else cm.display.prevInput = text;
|
|
if (withOp) endOperation(cm);
|
|
cm.state.pasteIncoming = false;
|
|
return true;
|
|
}
|
|
|
|
function resetInput(cm, user) {
|
|
var minimal, selected, doc = cm.doc;
|
|
if (!posEq(doc.sel.from, doc.sel.to)) {
|
|
cm.display.prevInput = "";
|
|
minimal = hasCopyEvent &&
|
|
(doc.sel.to.line - doc.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000);
|
|
var content = minimal ? "-" : selected || cm.getSelection();
|
|
cm.display.input.value = content;
|
|
if (cm.state.focused) selectInput(cm.display.input);
|
|
if (ie && !ie_lt9) cm.display.inputHasSelection = content;
|
|
} else if (user) {
|
|
cm.display.prevInput = cm.display.input.value = "";
|
|
if (ie && !ie_lt9) cm.display.inputHasSelection = null;
|
|
}
|
|
cm.display.inaccurateSelection = minimal;
|
|
}
|
|
|
|
function focusInput(cm) {
|
|
if (cm.options.readOnly != "nocursor" && (!mobile || document.activeElement != cm.display.input))
|
|
cm.display.input.focus();
|
|
}
|
|
|
|
function isReadOnly(cm) {
|
|
return cm.options.readOnly || cm.doc.cantEdit;
|
|
}
|
|
|
|
// EVENT HANDLERS
|
|
|
|
function registerEventHandlers(cm) {
|
|
var d = cm.display;
|
|
on(d.scroller, "mousedown", operation(cm, onMouseDown));
|
|
if (ie)
|
|
on(d.scroller, "dblclick", operation(cm, function(e) {
|
|
if (signalDOMEvent(cm, e)) return;
|
|
var pos = posFromMouse(cm, e);
|
|
if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
|
|
e_preventDefault(e);
|
|
var word = findWordAt(getLine(cm.doc, pos.line).text, pos);
|
|
extendSelection(cm.doc, word.from, word.to);
|
|
}));
|
|
else
|
|
on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); });
|
|
on(d.lineSpace, "selectstart", function(e) {
|
|
if (!eventInWidget(d, e)) e_preventDefault(e);
|
|
});
|
|
// Gecko browsers fire contextmenu *after* opening the menu, at
|
|
// which point we can't mess with it anymore. Context menu is
|
|
// handled in onMouseDown for Gecko.
|
|
if (!captureMiddleClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});
|
|
|
|
on(d.scroller, "scroll", function() {
|
|
if (d.scroller.clientHeight) {
|
|
setScrollTop(cm, d.scroller.scrollTop);
|
|
setScrollLeft(cm, d.scroller.scrollLeft, true);
|
|
signal(cm, "scroll", cm);
|
|
}
|
|
});
|
|
on(d.scrollbarV, "scroll", function() {
|
|
if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop);
|
|
});
|
|
on(d.scrollbarH, "scroll", function() {
|
|
if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft);
|
|
});
|
|
|
|
on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
|
|
on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});
|
|
|
|
function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); }
|
|
on(d.scrollbarH, "mousedown", reFocus);
|
|
on(d.scrollbarV, "mousedown", reFocus);
|
|
// Prevent wrapper from ever scrolling
|
|
on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
|
|
|
|
var resizeTimer;
|
|
function onResize() {
|
|
if (resizeTimer == null) resizeTimer = setTimeout(function() {
|
|
resizeTimer = null;
|
|
// Might be a text scaling operation, clear size caches.
|
|
d.cachedCharWidth = d.cachedTextHeight = knownScrollbarWidth = null;
|
|
clearCaches(cm);
|
|
runInOp(cm, bind(regChange, cm));
|
|
}, 100);
|
|
}
|
|
on(window, "resize", onResize);
|
|
// Above handler holds on to the editor and its data structures.
|
|
// Here we poll to unregister it when the editor is no longer in
|
|
// the document, so that it can be garbage-collected.
|
|
function unregister() {
|
|
for (var p = d.wrapper.parentNode; p && p != document.body; p = p.parentNode) {}
|
|
if (p) setTimeout(unregister, 5000);
|
|
else off(window, "resize", onResize);
|
|
}
|
|
setTimeout(unregister, 5000);
|
|
|
|
on(d.input, "keyup", operation(cm, function(e) {
|
|
if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
|
|
if (e.keyCode == 16) cm.doc.sel.shift = false;
|
|
}));
|
|
on(d.input, "input", function() {
|
|
if (ie && !ie_lt9 && cm.display.inputHasSelection) cm.display.inputHasSelection = null;
|
|
fastPoll(cm);
|
|
});
|
|
on(d.input, "keydown", operation(cm, onKeyDown));
|
|
on(d.input, "keypress", operation(cm, onKeyPress));
|
|
on(d.input, "focus", bind(onFocus, cm));
|
|
on(d.input, "blur", bind(onBlur, cm));
|
|
|
|
function drag_(e) {
|
|
if (signalDOMEvent(cm, e) || cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return;
|
|
e_stop(e);
|
|
}
|
|
if (cm.options.dragDrop) {
|
|
on(d.scroller, "dragstart", function(e){onDragStart(cm, e);});
|
|
on(d.scroller, "dragenter", drag_);
|
|
on(d.scroller, "dragover", drag_);
|
|
on(d.scroller, "drop", operation(cm, onDrop));
|
|
}
|
|
on(d.scroller, "paste", function(e) {
|
|
if (eventInWidget(d, e)) return;
|
|
focusInput(cm);
|
|
fastPoll(cm);
|
|
});
|
|
on(d.input, "paste", function() {
|
|
// Workaround for webkit bug https://bugs.webkit.org/show_bug.cgi?id=90206
|
|
// Add a char to the end of textarea before paste occur so that
|
|
// selection doesn't span to the end of textarea.
|
|
if (webkit && !cm.state.fakedLastChar && !(new Date - cm.state.lastMiddleDown < 200)) {
|
|
var start = d.input.selectionStart, end = d.input.selectionEnd;
|
|
d.input.value += "$";
|
|
d.input.selectionStart = start;
|
|
d.input.selectionEnd = end;
|
|
cm.state.fakedLastChar = true;
|
|
}
|
|
cm.state.pasteIncoming = true;
|
|
fastPoll(cm);
|
|
});
|
|
|
|
function prepareCopy() {
|
|
if (d.inaccurateSelection) {
|
|
d.prevInput = "";
|
|
d.inaccurateSelection = false;
|
|
d.input.value = cm.getSelection();
|
|
selectInput(d.input);
|
|
}
|
|
}
|
|
on(d.input, "cut", prepareCopy);
|
|
on(d.input, "copy", prepareCopy);
|
|
|
|
// Needed to handle Tab key in KHTML
|
|
if (khtml) on(d.sizer, "mouseup", function() {
|
|
if (document.activeElement == d.input) d.input.blur();
|
|
focusInput(cm);
|
|
});
|
|
}
|
|
|
|
function eventInWidget(display, e) {
|
|
for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
|
|
if (!n || n.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true;
|
|
}
|
|
}
|
|
|
|
function posFromMouse(cm, e, liberal) {
|
|
var display = cm.display;
|
|
if (!liberal) {
|
|
var target = e_target(e);
|
|
if (target == display.scrollbarH || target == display.scrollbarH.firstChild ||
|
|
target == display.scrollbarV || target == display.scrollbarV.firstChild ||
|
|
target == display.scrollbarFiller || target == display.gutterFiller) return null;
|
|
}
|
|
var x, y, space = getRect(display.lineSpace);
|
|
// Fails unpredictably on IE[67] when mouse is dragged around quickly.
|
|
try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
|
|
return coordsChar(cm, x - space.left, y - space.top);
|
|
}
|
|
|
|
var lastClick, lastDoubleClick;
|
|
function onMouseDown(e) {
|
|
if (signalDOMEvent(this, e)) return;
|
|
var cm = this, display = cm.display, doc = cm.doc, sel = doc.sel;
|
|
sel.shift = e.shiftKey;
|
|
|
|
if (eventInWidget(display, e)) {
|
|
if (!webkit) {
|
|
display.scroller.draggable = false;
|
|
setTimeout(function(){display.scroller.draggable = true;}, 100);
|
|
}
|
|
return;
|
|
}
|
|
if (clickInGutter(cm, e)) return;
|
|
var start = posFromMouse(cm, e);
|
|
|
|
switch (e_button(e)) {
|
|
case 3:
|
|
if (captureMiddleClick) onContextMenu.call(cm, cm, e);
|
|
return;
|
|
case 2:
|
|
if (webkit) cm.state.lastMiddleDown = +new Date;
|
|
if (start) extendSelection(cm.doc, start);
|
|
setTimeout(bind(focusInput, cm), 20);
|
|
e_preventDefault(e);
|
|
return;
|
|
}
|
|
// For button 1, if it was clicked inside the editor
|
|
// (posFromMouse returning non-null), we have to adjust the
|
|
// selection.
|
|
if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;}
|
|
|
|
if (!cm.state.focused) onFocus(cm);
|
|
|
|
var now = +new Date, type = "single";
|
|
if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
|
|
type = "triple";
|
|
e_preventDefault(e);
|
|
setTimeout(bind(focusInput, cm), 20);
|
|
selectLine(cm, start.line);
|
|
} else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
|
|
type = "double";
|
|
lastDoubleClick = {time: now, pos: start};
|
|
e_preventDefault(e);
|
|
var word = findWordAt(getLine(doc, start.line).text, start);
|
|
extendSelection(cm.doc, word.from, word.to);
|
|
} else { lastClick = {time: now, pos: start}; }
|
|
|
|
var last = start;
|
|
if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) &&
|
|
!posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") {
|
|
var dragEnd = operation(cm, function(e2) {
|
|
if (webkit) display.scroller.draggable = false;
|
|
cm.state.draggingText = false;
|
|
off(document, "mouseup", dragEnd);
|
|
off(display.scroller, "drop", dragEnd);
|
|
if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
|
|
e_preventDefault(e2);
|
|
extendSelection(cm.doc, start);
|
|
focusInput(cm);
|
|
}
|
|
});
|
|
// Let the drag handler handle this.
|
|
if (webkit) display.scroller.draggable = true;
|
|
cm.state.draggingText = dragEnd;
|
|
// IE's approach to draggable
|
|
if (display.scroller.dragDrop) display.scroller.dragDrop();
|
|
on(document, "mouseup", dragEnd);
|
|
on(display.scroller, "drop", dragEnd);
|
|
return;
|
|
}
|
|
e_preventDefault(e);
|
|
if (type == "single") extendSelection(cm.doc, clipPos(doc, start));
|
|
|
|
var startstart = sel.from, startend = sel.to, lastPos = start;
|
|
|
|
function doSelect(cur) {
|
|
if (posEq(lastPos, cur)) return;
|
|
lastPos = cur;
|
|
|
|
if (type == "single") {
|
|
extendSelection(cm.doc, clipPos(doc, start), cur);
|
|
return;
|
|
}
|
|
|
|
startstart = clipPos(doc, startstart);
|
|
startend = clipPos(doc, startend);
|
|
if (type == "double") {
|
|
var word = findWordAt(getLine(doc, cur.line).text, cur);
|
|
if (posLess(cur, startstart)) extendSelection(cm.doc, word.from, startend);
|
|
else extendSelection(cm.doc, startstart, word.to);
|
|
} else if (type == "triple") {
|
|
if (posLess(cur, startstart)) extendSelection(cm.doc, startend, clipPos(doc, Pos(cur.line, 0)));
|
|
else extendSelection(cm.doc, startstart, clipPos(doc, Pos(cur.line + 1, 0)));
|
|
}
|
|
}
|
|
|
|
var editorSize = getRect(display.wrapper);
|
|
// Used to ensure timeout re-tries don't fire when another extend
|
|
// happened in the meantime (clearTimeout isn't reliable -- at
|
|
// least on Chrome, the timeouts still happen even when cleared,
|
|
// if the clear happens after their scheduled firing time).
|
|
var counter = 0;
|
|
|
|
function extend(e) {
|
|
var curCount = ++counter;
|
|
var cur = posFromMouse(cm, e, true);
|
|
if (!cur) return;
|
|
if (!posEq(cur, last)) {
|
|
if (!cm.state.focused) onFocus(cm);
|
|
last = cur;
|
|
doSelect(cur);
|
|
var visible = visibleLines(display, doc);
|
|
if (cur.line >= visible.to || cur.line < visible.from)
|
|
setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);
|
|
} else {
|
|
var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
|
|
if (outside) setTimeout(operation(cm, function() {
|
|
if (counter != curCount) return;
|
|
display.scroller.scrollTop += outside;
|
|
extend(e);
|
|
}), 50);
|
|
}
|
|
}
|
|
|
|
function done(e) {
|
|
counter = Infinity;
|
|
e_preventDefault(e);
|
|
focusInput(cm);
|
|
off(document, "mousemove", move);
|
|
off(document, "mouseup", up);
|
|
}
|
|
|
|
var move = operation(cm, function(e) {
|
|
if (!ie && !e_button(e)) done(e);
|
|
else extend(e);
|
|
});
|
|
var up = operation(cm, done);
|
|
on(document, "mousemove", move);
|
|
on(document, "mouseup", up);
|
|
}
|
|
|
|
function gutterEvent(cm, e, type, prevent, signalfn) {
|
|
try { var mX = e.clientX, mY = e.clientY; }
|
|
catch(e) { return false; }
|
|
if (mX >= Math.floor(getRect(cm.display.gutters).right)) return false;
|
|
if (prevent) e_preventDefault(e);
|
|
|
|
var display = cm.display;
|
|
var lineBox = getRect(display.lineDiv);
|
|
|
|
if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e);
|
|
mY -= lineBox.top - display.viewOffset;
|
|
|
|
for (var i = 0; i < cm.options.gutters.length; ++i) {
|
|
var g = display.gutters.childNodes[i];
|
|
if (g && getRect(g).right >= mX) {
|
|
var line = lineAtHeight(cm.doc, mY);
|
|
var gutter = cm.options.gutters[i];
|
|
signalfn(cm, type, cm, line, gutter, e);
|
|
return e_defaultPrevented(e);
|
|
}
|
|
}
|
|
}
|
|
|
|
function contextMenuInGutter(cm, e) {
|
|
if (!hasHandler(cm, "gutterContextMenu")) return false;
|
|
return gutterEvent(cm, e, "gutterContextMenu", false, signal);
|
|
}
|
|
|
|
function clickInGutter(cm, e) {
|
|
return gutterEvent(cm, e, "gutterClick", true, signalLater);
|
|
}
|
|
|
|
// Kludge to work around strange IE behavior where it'll sometimes
|
|
// re-fire a series of drag-related events right after the drop (#1551)
|
|
var lastDrop = 0;
|
|
|
|
function onDrop(e) {
|
|
var cm = this;
|
|
if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e) || (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))))
|
|
return;
|
|
e_preventDefault(e);
|
|
if (ie) lastDrop = +new Date;
|
|
var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
|
|
if (!pos || isReadOnly(cm)) return;
|
|
if (files && files.length && window.FileReader && window.File) {
|
|
var n = files.length, text = Array(n), read = 0;
|
|
var loadFile = function(file, i) {
|
|
var reader = new FileReader;
|
|
reader.onload = function() {
|
|
text[i] = reader.result;
|
|
if (++read == n) {
|
|
pos = clipPos(cm.doc, pos);
|
|
makeChange(cm.doc, {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}, "around");
|
|
}
|
|
};
|
|
reader.readAsText(file);
|
|
};
|
|
for (var i = 0; i < n; ++i) loadFile(files[i], i);
|
|
} else {
|
|
// Don't do a replace if the drop happened inside of the selected text.
|
|
if (cm.state.draggingText && !(posLess(pos, cm.doc.sel.from) || posLess(cm.doc.sel.to, pos))) {
|
|
cm.state.draggingText(e);
|
|
// Ensure the editor is re-focused
|
|
setTimeout(bind(focusInput, cm), 20);
|
|
return;
|
|
}
|
|
try {
|
|
var text = e.dataTransfer.getData("Text");
|
|
if (text) {
|
|
var curFrom = cm.doc.sel.from, curTo = cm.doc.sel.to;
|
|
setSelection(cm.doc, pos, pos);
|
|
if (cm.state.draggingText) replaceRange(cm.doc, "", curFrom, curTo, "paste");
|
|
cm.replaceSelection(text, null, "paste");
|
|
focusInput(cm);
|
|
onFocus(cm);
|
|
}
|
|
}
|
|
catch(e){}
|
|
}
|
|
}
|
|
|
|
function onDragStart(cm, e) {
|
|
if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; }
|
|
if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return;
|
|
|
|
var txt = cm.getSelection();
|
|
e.dataTransfer.setData("Text", txt);
|
|
|
|
// Use dummy image instead of default browsers image.
|
|
// Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
|
|
if (e.dataTransfer.setDragImage && !safari) {
|
|
var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
|
|
img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
|
|
if (opera) {
|
|
img.width = img.height = 1;
|
|
cm.display.wrapper.appendChild(img);
|
|
// Force a relayout, or Opera won't use our image for some obscure reason
|
|
img._top = img.offsetTop;
|
|
}
|
|
e.dataTransfer.setDragImage(img, 0, 0);
|
|
if (opera) img.parentNode.removeChild(img);
|
|
}
|
|
}
|
|
|
|
function setScrollTop(cm, val) {
|
|
if (Math.abs(cm.doc.scrollTop - val) < 2) return;
|
|
cm.doc.scrollTop = val;
|
|
if (!gecko) updateDisplay(cm, [], val);
|
|
if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
|
|
if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val;
|
|
if (gecko) updateDisplay(cm, []);
|
|
startWorker(cm, 100);
|
|
}
|
|
function setScrollLeft(cm, val, isScroller) {
|
|
if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return;
|
|
val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);
|
|
cm.doc.scrollLeft = val;
|
|
alignHorizontally(cm);
|
|
if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;
|
|
if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val;
|
|
}
|
|
|
|
// Since the delta values reported on mouse wheel events are
|
|
// unstandardized between browsers and even browser versions, and
|
|
// generally horribly unpredictable, this code starts by measuring
|
|
// the scroll effect that the first few mouse wheel events have,
|
|
// and, from that, detects the way it can convert deltas to pixel
|
|
// offsets afterwards.
|
|
//
|
|
// The reason we want to know the amount a wheel event will scroll
|
|
// is that it gives us a chance to update the display before the
|
|
// actual scrolling happens, reducing flickering.
|
|
|
|
var wheelSamples = 0, wheelPixelsPerUnit = null;
|
|
// Fill in a browser-detected starting value on browsers where we
|
|
// know one. These don't have to be accurate -- the result of them
|
|
// being wrong would just be a slight flicker on the first wheel
|
|
// scroll (if it is large enough).
|
|
if (ie) wheelPixelsPerUnit = -.53;
|
|
else if (gecko) wheelPixelsPerUnit = 15;
|
|
else if (chrome) wheelPixelsPerUnit = -.7;
|
|
else if (safari) wheelPixelsPerUnit = -1/3;
|
|
|
|
function onScrollWheel(cm, e) {
|
|
var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
|
|
if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
|
|
if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
|
|
else if (dy == null) dy = e.wheelDelta;
|
|
|
|
var display = cm.display, scroll = display.scroller;
|
|
// Quit if there's nothing to scroll here
|
|
if (!(dx && scroll.scrollWidth > scroll.clientWidth ||
|
|
dy && scroll.scrollHeight > scroll.clientHeight)) return;
|
|
|
|
// Webkit browsers on OS X abort momentum scrolls when the target
|
|
// of the scroll event is removed from the scrollable element.
|
|
// This hack (see related code in patchDisplay) makes sure the
|
|
// element is kept around.
|
|
if (dy && mac && webkit) {
|
|
for (var cur = e.target; cur != scroll; cur = cur.parentNode) {
|
|
if (cur.lineObj) {
|
|
cm.display.currentWheelTarget = cur;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// On some browsers, horizontal scrolling will cause redraws to
|
|
// happen before the gutter has been realigned, causing it to
|
|
// wriggle around in a most unseemly way. When we have an
|
|
// estimated pixels/delta value, we just handle horizontal
|
|
// scrolling entirely here. It'll be slightly off from native, but
|
|
// better than glitching out.
|
|
if (dx && !gecko && !opera && wheelPixelsPerUnit != null) {
|
|
if (dy)
|
|
setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight)));
|
|
setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)));
|
|
e_preventDefault(e);
|
|
display.wheelStartX = null; // Abort measurement, if in progress
|
|
return;
|
|
}
|
|
|
|
if (dy && wheelPixelsPerUnit != null) {
|
|
var pixels = dy * wheelPixelsPerUnit;
|
|
var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
|
|
if (pixels < 0) top = Math.max(0, top + pixels - 50);
|
|
else bot = Math.min(cm.doc.height, bot + pixels + 50);
|
|
updateDisplay(cm, [], {top: top, bottom: bot});
|
|
}
|
|
|
|
if (wheelSamples < 20) {
|
|
if (display.wheelStartX == null) {
|
|
display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
|
|
display.wheelDX = dx; display.wheelDY = dy;
|
|
setTimeout(function() {
|
|
if (display.wheelStartX == null) return;
|
|
var movedX = scroll.scrollLeft - display.wheelStartX;
|
|
var movedY = scroll.scrollTop - display.wheelStartY;
|
|
var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
|
|
(movedX && display.wheelDX && movedX / display.wheelDX);
|
|
display.wheelStartX = display.wheelStartY = null;
|
|
if (!sample) return;
|
|
wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
|
|
++wheelSamples;
|
|
}, 200);
|
|
} else {
|
|
display.wheelDX += dx; display.wheelDY += dy;
|
|
}
|
|
}
|
|
}
|
|
|
|
function doHandleBinding(cm, bound, dropShift) {
|
|
if (typeof bound == "string") {
|
|
bound = commands[bound];
|
|
if (!bound) return false;
|
|
}
|
|
// Ensure previous input has been read, so that the handler sees a
|
|
// consistent view of the document
|
|
if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false;
|
|
var doc = cm.doc, prevShift = doc.sel.shift, done = false;
|
|
try {
|
|
if (isReadOnly(cm)) cm.state.suppressEdits = true;
|
|
if (dropShift) doc.sel.shift = false;
|
|
done = bound(cm) != Pass;
|
|
} finally {
|
|
doc.sel.shift = prevShift;
|
|
cm.state.suppressEdits = false;
|
|
}
|
|
return done;
|
|
}
|
|
|
|
function allKeyMaps(cm) {
|
|
var maps = cm.state.keyMaps.slice(0);
|
|
if (cm.options.extraKeys) maps.push(cm.options.extraKeys);
|
|
maps.push(cm.options.keyMap);
|
|
return maps;
|
|
}
|
|
|
|
var maybeTransition;
|
|
function handleKeyBinding(cm, e) {
|
|
// Handle auto keymap transitions
|
|
var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto;
|
|
clearTimeout(maybeTransition);
|
|
if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
|
|
if (getKeyMap(cm.options.keyMap) == startMap) {
|
|
cm.options.keyMap = (next.call ? next.call(null, cm) : next);
|
|
keyMapChanged(cm);
|
|
}
|
|
}, 50);
|
|
|
|
var name = keyName(e, true), handled = false;
|
|
if (!name) return false;
|
|
var keymaps = allKeyMaps(cm);
|
|
|
|
if (e.shiftKey) {
|
|
// First try to resolve full name (including 'Shift-'). Failing
|
|
// that, see if there is a cursor-motion command (starting with
|
|
// 'go') bound to the keyname without 'Shift-'.
|
|
handled = lookupKey("Shift-" + name, keymaps, function(b) {return doHandleBinding(cm, b, true);})
|
|
|| lookupKey(name, keymaps, function(b) {
|
|
if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
|
|
return doHandleBinding(cm, b);
|
|
});
|
|
} else {
|
|
handled = lookupKey(name, keymaps, function(b) { return doHandleBinding(cm, b); });
|
|
}
|
|
|
|
if (handled) {
|
|
e_preventDefault(e);
|
|
restartBlink(cm);
|
|
if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }
|
|
signalLater(cm, "keyHandled", cm, name, e);
|
|
}
|
|
return handled;
|
|
}
|
|
|
|
function handleCharBinding(cm, e, ch) {
|
|
var handled = lookupKey("'" + ch + "'", allKeyMaps(cm),
|
|
function(b) { return doHandleBinding(cm, b, true); });
|
|
if (handled) {
|
|
e_preventDefault(e);
|
|
restartBlink(cm);
|
|
signalLater(cm, "keyHandled", cm, "'" + ch + "'", e);
|
|
}
|
|
return handled;
|
|
}
|
|
|
|
var lastStoppedKey = null;
|
|
function onKeyDown(e) {
|
|
var cm = this;
|
|
if (!cm.state.focused) onFocus(cm);
|
|
if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
|
|
if (ie && e.keyCode == 27) e.returnValue = false;
|
|
var code = e.keyCode;
|
|
// IE does strange things with escape.
|
|
cm.doc.sel.shift = code == 16 || e.shiftKey;
|
|
// First give onKeyEvent option a chance to handle this.
|
|
var handled = handleKeyBinding(cm, e);
|
|
if (opera) {
|
|
lastStoppedKey = handled ? code : null;
|
|
// Opera has no cut event... we try to at least catch the key combo
|
|
if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
|
|
cm.replaceSelection("");
|
|
}
|
|
}
|
|
|
|
function onKeyPress(e) {
|
|
var cm = this;
|
|
if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
|
|
var keyCode = e.keyCode, charCode = e.charCode;
|
|
if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
|
|
if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;
|
|
var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
|
|
if (this.options.electricChars && this.doc.mode.electricChars &&
|
|
this.options.smartIndent && !isReadOnly(this) &&
|
|
this.doc.mode.electricChars.indexOf(ch) > -1)
|
|
setTimeout(operation(cm, function() {indentLine(cm, cm.doc.sel.to.line, "smart");}), 75);
|
|
if (handleCharBinding(cm, e, ch)) return;
|
|
if (ie && !ie_lt9) cm.display.inputHasSelection = null;
|
|
fastPoll(cm);
|
|
}
|
|
|
|
function onFocus(cm) {
|
|
if (cm.options.readOnly == "nocursor") return;
|
|
if (!cm.state.focused) {
|
|
signal(cm, "focus", cm);
|
|
cm.state.focused = true;
|
|
if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1)
|
|
cm.display.wrapper.className += " CodeMirror-focused";
|
|
if (!cm.curOp) {
|
|
resetInput(cm, true);
|
|
if (webkit) setTimeout(bind(resetInput, cm, true), 0); // Issue #1730
|
|
}
|
|
}
|
|
slowPoll(cm);
|
|
restartBlink(cm);
|
|
}
|
|
function onBlur(cm) {
|
|
if (cm.state.focused) {
|
|
signal(cm, "blur", cm);
|
|
cm.state.focused = false;
|
|
cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-focused", "");
|
|
}
|
|
clearInterval(cm.display.blinker);
|
|
setTimeout(function() {if (!cm.state.focused) cm.doc.sel.shift = false;}, 150);
|
|
}
|
|
|
|
var detectingSelectAll;
|
|
function onContextMenu(cm, e) {
|
|
if (signalDOMEvent(cm, e, "contextmenu")) return;
|
|
var display = cm.display, sel = cm.doc.sel;
|
|
if (eventInWidget(display, e) || contextMenuInGutter(cm, e)) return;
|
|
|
|
var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
|
|
if (!pos || opera) return; // Opera is difficult.
|
|
|
|
// Reset the current text selection only if the click is done outside of the selection
|
|
// and 'resetSelectionOnContextMenu' option is true.
|
|
var reset = cm.options.resetSelectionOnContextMenu;
|
|
if (reset && (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)))
|
|
operation(cm, setSelection)(cm.doc, pos, pos);
|
|
|
|
var oldCSS = display.input.style.cssText;
|
|
display.inputDiv.style.position = "absolute";
|
|
display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
|
|
"px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; outline: none;" +
|
|
"border-width: 0; outline: none; overflow: hidden; opacity: .05; -ms-opacity: .05; filter: alpha(opacity=5);";
|
|
focusInput(cm);
|
|
resetInput(cm, true);
|
|
// Adds "Select all" to context menu in FF
|
|
if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " ";
|
|
|
|
function prepareSelectAllHack() {
|
|
if (display.input.selectionStart != null) {
|
|
var extval = display.input.value = "\u200b" + (posEq(sel.from, sel.to) ? "" : display.input.value);
|
|
display.prevInput = "\u200b";
|
|
display.input.selectionStart = 1; display.input.selectionEnd = extval.length;
|
|
}
|
|
}
|
|
function rehide() {
|
|
display.inputDiv.style.position = "relative";
|
|
display.input.style.cssText = oldCSS;
|
|
if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos;
|
|
slowPoll(cm);
|
|
|
|
// Try to detect the user choosing select-all
|
|
if (display.input.selectionStart != null) {
|
|
if (!ie || ie_lt9) prepareSelectAllHack();
|
|
clearTimeout(detectingSelectAll);
|
|
var i = 0, poll = function(){
|
|
if (display.prevInput == " " && display.input.selectionStart == 0)
|
|
operation(cm, commands.selectAll)(cm);
|
|
else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
|
|
else resetInput(cm);
|
|
};
|
|
detectingSelectAll = setTimeout(poll, 200);
|
|
}
|
|
}
|
|
|
|
if (ie && !ie_lt9) prepareSelectAllHack();
|
|
if (captureMiddleClick) {
|
|
e_stop(e);
|
|
var mouseup = function() {
|
|
off(window, "mouseup", mouseup);
|
|
setTimeout(rehide, 20);
|
|
};
|
|
on(window, "mouseup", mouseup);
|
|
} else {
|
|
setTimeout(rehide, 50);
|
|
}
|
|
}
|
|
|
|
// UPDATING
|
|
|
|
var changeEnd = CodeMirror.changeEnd = function(change) {
|
|
if (!change.text) return change.to;
|
|
return Pos(change.from.line + change.text.length - 1,
|
|
lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0));
|
|
};
|
|
|
|
// Make sure a position will be valid after the given change.
|
|
function clipPostChange(doc, change, pos) {
|
|
if (!posLess(change.from, pos)) return clipPos(doc, pos);
|
|
var diff = (change.text.length - 1) - (change.to.line - change.from.line);
|
|
if (pos.line > change.to.line + diff) {
|
|
var preLine = pos.line - diff, lastLine = doc.first + doc.size - 1;
|
|
if (preLine > lastLine) return Pos(lastLine, getLine(doc, lastLine).text.length);
|
|
return clipToLen(pos, getLine(doc, preLine).text.length);
|
|
}
|
|
if (pos.line == change.to.line + diff)
|
|
return clipToLen(pos, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0) +
|
|
getLine(doc, change.to.line).text.length - change.to.ch);
|
|
var inside = pos.line - change.from.line;
|
|
return clipToLen(pos, change.text[inside].length + (inside ? 0 : change.from.ch));
|
|
}
|
|
|
|
// Hint can be null|"end"|"start"|"around"|{anchor,head}
|
|
function computeSelAfterChange(doc, change, hint) {
|
|
if (hint && typeof hint == "object") // Assumed to be {anchor, head} object
|
|
return {anchor: clipPostChange(doc, change, hint.anchor),
|
|
head: clipPostChange(doc, change, hint.head)};
|
|
|
|
if (hint == "start") return {anchor: change.from, head: change.from};
|
|
|
|
var end = changeEnd(change);
|
|
if (hint == "around") return {anchor: change.from, head: end};
|
|
if (hint == "end") return {anchor: end, head: end};
|
|
|
|
// hint is null, leave the selection alone as much as possible
|
|
var adjustPos = function(pos) {
|
|
if (posLess(pos, change.from)) return pos;
|
|
if (!posLess(change.to, pos)) return end;
|
|
|
|
var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
|
|
if (pos.line == change.to.line) ch += end.ch - change.to.ch;
|
|
return Pos(line, ch);
|
|
};
|
|
return {anchor: adjustPos(doc.sel.anchor), head: adjustPos(doc.sel.head)};
|
|
}
|
|
|
|
function filterChange(doc, change, update) {
|
|
var obj = {
|
|
canceled: false,
|
|
from: change.from,
|
|
to: change.to,
|
|
text: change.text,
|
|
origin: change.origin,
|
|
cancel: function() { this.canceled = true; }
|
|
};
|
|
if (update) obj.update = function(from, to, text, origin) {
|
|
if (from) this.from = clipPos(doc, from);
|
|
if (to) this.to = clipPos(doc, to);
|
|
if (text) this.text = text;
|
|
if (origin !== undefined) this.origin = origin;
|
|
};
|
|
signal(doc, "beforeChange", doc, obj);
|
|
if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj);
|
|
|
|
if (obj.canceled) return null;
|
|
return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin};
|
|
}
|
|
|
|
// Replace the range from from to to by the strings in replacement.
|
|
// change is a {from, to, text [, origin]} object
|
|
function makeChange(doc, change, selUpdate, ignoreReadOnly) {
|
|
if (doc.cm) {
|
|
if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, selUpdate, ignoreReadOnly);
|
|
if (doc.cm.state.suppressEdits) return;
|
|
}
|
|
|
|
if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
|
|
change = filterChange(doc, change, true);
|
|
if (!change) return;
|
|
}
|
|
|
|
// Possibly split or suppress the update based on the presence
|
|
// of read-only spans in its range.
|
|
var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
|
|
if (split) {
|
|
for (var i = split.length - 1; i >= 1; --i)
|
|
makeChangeNoReadonly(doc, {from: split[i].from, to: split[i].to, text: [""]});
|
|
if (split.length)
|
|
makeChangeNoReadonly(doc, {from: split[0].from, to: split[0].to, text: change.text}, selUpdate);
|
|
} else {
|
|
makeChangeNoReadonly(doc, change, selUpdate);
|
|
}
|
|
}
|
|
|
|
function makeChangeNoReadonly(doc, change, selUpdate) {
|
|
if (change.text.length == 1 && change.text[0] == "" && posEq(change.from, change.to)) return;
|
|
var selAfter = computeSelAfterChange(doc, change, selUpdate);
|
|
addToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);
|
|
|
|
makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
|
|
var rebased = [];
|
|
|
|
linkedDocs(doc, function(doc, sharedHist) {
|
|
if (!sharedHist && indexOf(rebased, doc.history) == -1) {
|
|
rebaseHist(doc.history, change);
|
|
rebased.push(doc.history);
|
|
}
|
|
makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
|
|
});
|
|
}
|
|
|
|
function makeChangeFromHistory(doc, type) {
|
|
if (doc.cm && doc.cm.state.suppressEdits) return;
|
|
|
|
var hist = doc.history;
|
|
var event = (type == "undo" ? hist.done : hist.undone).pop();
|
|
if (!event) return;
|
|
|
|
var anti = {changes: [], anchorBefore: event.anchorAfter, headBefore: event.headAfter,
|
|
anchorAfter: event.anchorBefore, headAfter: event.headBefore,
|
|
generation: hist.generation};
|
|
(type == "undo" ? hist.undone : hist.done).push(anti);
|
|
hist.generation = event.generation || ++hist.maxGeneration;
|
|
|
|
var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");
|
|
|
|
for (var i = event.changes.length - 1; i >= 0; --i) {
|
|
var change = event.changes[i];
|
|
change.origin = type;
|
|
if (filter && !filterChange(doc, change, false)) {
|
|
(type == "undo" ? hist.done : hist.undone).length = 0;
|
|
return;
|
|
}
|
|
|
|
anti.changes.push(historyChangeFromChange(doc, change));
|
|
|
|
var after = i ? computeSelAfterChange(doc, change, null)
|
|
: {anchor: event.anchorBefore, head: event.headBefore};
|
|
makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
|
|
var rebased = [];
|
|
|
|
linkedDocs(doc, function(doc, sharedHist) {
|
|
if (!sharedHist && indexOf(rebased, doc.history) == -1) {
|
|
rebaseHist(doc.history, change);
|
|
rebased.push(doc.history);
|
|
}
|
|
makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
|
|
});
|
|
}
|
|
}
|
|
|
|
function shiftDoc(doc, distance) {
|
|
function shiftPos(pos) {return Pos(pos.line + distance, pos.ch);}
|
|
doc.first += distance;
|
|
if (doc.cm) regChange(doc.cm, doc.first, doc.first, distance);
|
|
doc.sel.head = shiftPos(doc.sel.head); doc.sel.anchor = shiftPos(doc.sel.anchor);
|
|
doc.sel.from = shiftPos(doc.sel.from); doc.sel.to = shiftPos(doc.sel.to);
|
|
}
|
|
|
|
function makeChangeSingleDoc(doc, change, selAfter, spans) {
|
|
if (doc.cm && !doc.cm.curOp)
|
|
return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans);
|
|
|
|
if (change.to.line < doc.first) {
|
|
shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
|
|
return;
|
|
}
|
|
if (change.from.line > doc.lastLine()) return;
|
|
|
|
// Clip the change to the size of this doc
|
|
if (change.from.line < doc.first) {
|
|
var shift = change.text.length - 1 - (doc.first - change.from.line);
|
|
shiftDoc(doc, shift);
|
|
change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
|
|
text: [lst(change.text)], origin: change.origin};
|
|
}
|
|
var last = doc.lastLine();
|
|
if (change.to.line > last) {
|
|
change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
|
|
text: [change.text[0]], origin: change.origin};
|
|
}
|
|
|
|
change.removed = getBetween(doc, change.from, change.to);
|
|
|
|
if (!selAfter) selAfter = computeSelAfterChange(doc, change, null);
|
|
if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans, selAfter);
|
|
else updateDoc(doc, change, spans, selAfter);
|
|
}
|
|
|
|
function makeChangeSingleDocInEditor(cm, change, spans, selAfter) {
|
|
var doc = cm.doc, display = cm.display, from = change.from, to = change.to;
|
|
|
|
var recomputeMaxLength = false, checkWidthStart = from.line;
|
|
if (!cm.options.lineWrapping) {
|
|
checkWidthStart = lineNo(visualLine(doc, getLine(doc, from.line)));
|
|
doc.iter(checkWidthStart, to.line + 1, function(line) {
|
|
if (line == display.maxLine) {
|
|
recomputeMaxLength = true;
|
|
return true;
|
|
}
|
|
});
|
|
}
|
|
|
|
if (!posLess(doc.sel.head, change.from) && !posLess(change.to, doc.sel.head))
|
|
cm.curOp.cursorActivity = true;
|
|
|
|
updateDoc(doc, change, spans, selAfter, estimateHeight(cm));
|
|
|
|
if (!cm.options.lineWrapping) {
|
|
doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
|
|
var len = lineLength(doc, line);
|
|
if (len > display.maxLineLength) {
|
|
display.maxLine = line;
|
|
display.maxLineLength = len;
|
|
display.maxLineChanged = true;
|
|
recomputeMaxLength = false;
|
|
}
|
|
});
|
|
if (recomputeMaxLength) cm.curOp.updateMaxLine = true;
|
|
}
|
|
|
|
// Adjust frontier, schedule worker
|
|
doc.frontier = Math.min(doc.frontier, from.line);
|
|
startWorker(cm, 400);
|
|
|
|
var lendiff = change.text.length - (to.line - from.line) - 1;
|
|
// Remember that these lines changed, for updating the display
|
|
regChange(cm, from.line, to.line + 1, lendiff);
|
|
|
|
if (hasHandler(cm, "change")) {
|
|
var changeObj = {from: from, to: to,
|
|
text: change.text,
|
|
removed: change.removed,
|
|
origin: change.origin};
|
|
if (cm.curOp.textChanged) {
|
|
for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {}
|
|
cur.next = changeObj;
|
|
} else cm.curOp.textChanged = changeObj;
|
|
}
|
|
}
|
|
|
|
function replaceRange(doc, code, from, to, origin) {
|
|
if (!to) to = from;
|
|
if (posLess(to, from)) { var tmp = to; to = from; from = tmp; }
|
|
if (typeof code == "string") code = splitLines(code);
|
|
makeChange(doc, {from: from, to: to, text: code, origin: origin}, null);
|
|
}
|
|
|
|
// POSITION OBJECT
|
|
|
|
function Pos(line, ch) {
|
|
if (!(this instanceof Pos)) return new Pos(line, ch);
|
|
this.line = line; this.ch = ch;
|
|
}
|
|
CodeMirror.Pos = Pos;
|
|
|
|
function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
|
|
function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
|
|
function copyPos(x) {return Pos(x.line, x.ch);}
|
|
|
|
// SELECTION
|
|
|
|
function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
|
|
function clipPos(doc, pos) {
|
|
if (pos.line < doc.first) return Pos(doc.first, 0);
|
|
var last = doc.first + doc.size - 1;
|
|
if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
|
|
return clipToLen(pos, getLine(doc, pos.line).text.length);
|
|
}
|
|
function clipToLen(pos, linelen) {
|
|
var ch = pos.ch;
|
|
if (ch == null || ch > linelen) return Pos(pos.line, linelen);
|
|
else if (ch < 0) return Pos(pos.line, 0);
|
|
else return pos;
|
|
}
|
|
function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}
|
|
|
|
// If shift is held, this will move the selection anchor. Otherwise,
|
|
// it'll set the whole selection.
|
|
function extendSelection(doc, pos, other, bias) {
|
|
if (doc.sel.shift || doc.sel.extend) {
|
|
var anchor = doc.sel.anchor;
|
|
if (other) {
|
|
var posBefore = posLess(pos, anchor);
|
|
if (posBefore != posLess(other, anchor)) {
|
|
anchor = pos;
|
|
pos = other;
|
|
} else if (posBefore != posLess(pos, other)) {
|
|
pos = other;
|
|
}
|
|
}
|
|
setSelection(doc, anchor, pos, bias);
|
|
} else {
|
|
setSelection(doc, pos, other || pos, bias);
|
|
}
|
|
if (doc.cm) doc.cm.curOp.userSelChange = true;
|
|
}
|
|
|
|
function filterSelectionChange(doc, anchor, head) {
|
|
var obj = {anchor: anchor, head: head};
|
|
signal(doc, "beforeSelectionChange", doc, obj);
|
|
if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
|
|
obj.anchor = clipPos(doc, obj.anchor); obj.head = clipPos(doc, obj.head);
|
|
return obj;
|
|
}
|
|
|
|
// Update the selection. Last two args are only used by
|
|
// updateDoc, since they have to be expressed in the line
|
|
// numbers before the update.
|
|
function setSelection(doc, anchor, head, bias, checkAtomic) {
|
|
if (!checkAtomic && hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) {
|
|
var filtered = filterSelectionChange(doc, anchor, head);
|
|
head = filtered.head;
|
|
anchor = filtered.anchor;
|
|
}
|
|
|
|
var sel = doc.sel;
|
|
sel.goalColumn = null;
|
|
if (bias == null) bias = posLess(head, sel.head) ? -1 : 1;
|
|
// Skip over atomic spans.
|
|
if (checkAtomic || !posEq(anchor, sel.anchor))
|
|
anchor = skipAtomic(doc, anchor, bias, checkAtomic != "push");
|
|
if (checkAtomic || !posEq(head, sel.head))
|
|
head = skipAtomic(doc, head, bias, checkAtomic != "push");
|
|
|
|
if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return;
|
|
|
|
sel.anchor = anchor; sel.head = head;
|
|
var inv = posLess(head, anchor);
|
|
sel.from = inv ? head : anchor;
|
|
sel.to = inv ? anchor : head;
|
|
|
|
if (doc.cm)
|
|
doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged =
|
|
doc.cm.curOp.cursorActivity = true;
|
|
|
|
signalLater(doc, "cursorActivity", doc);
|
|
}
|
|
|
|
function reCheckSelection(cm) {
|
|
setSelection(cm.doc, cm.doc.sel.from, cm.doc.sel.to, null, "push");
|
|
}
|
|
|
|
function skipAtomic(doc, pos, bias, mayClear) {
|
|
var flipped = false, curPos = pos;
|
|
var dir = bias || 1;
|
|
doc.cantEdit = false;
|
|
search: for (;;) {
|
|
var line = getLine(doc, curPos.line);
|
|
if (line.markedSpans) {
|
|
for (var i = 0; i < line.markedSpans.length; ++i) {
|
|
var sp = line.markedSpans[i], m = sp.marker;
|
|
if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
|
|
(sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
|
|
if (mayClear) {
|
|
signal(m, "beforeCursorEnter");
|
|
if (m.explicitlyCleared) {
|
|
if (!line.markedSpans) break;
|
|
else {--i; continue;}
|
|
}
|
|
}
|
|
if (!m.atomic) continue;
|
|
var newPos = m.find()[dir < 0 ? "from" : "to"];
|
|
if (posEq(newPos, curPos)) {
|
|
newPos.ch += dir;
|
|
if (newPos.ch < 0) {
|
|
if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1));
|
|
else newPos = null;
|
|
} else if (newPos.ch > line.text.length) {
|
|
if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0);
|
|
else newPos = null;
|
|
}
|
|
if (!newPos) {
|
|
if (flipped) {
|
|
// Driven in a corner -- no valid cursor position found at all
|
|
// -- try again *with* clearing, if we didn't already
|
|
if (!mayClear) return skipAtomic(doc, pos, bias, true);
|
|
// Otherwise, turn off editing until further notice, and return the start of the doc
|
|
doc.cantEdit = true;
|
|
return Pos(doc.first, 0);
|
|
}
|
|
flipped = true; newPos = pos; dir = -dir;
|
|
}
|
|
}
|
|
curPos = newPos;
|
|
continue search;
|
|
}
|
|
}
|
|
}
|
|
return curPos;
|
|
}
|
|
}
|
|
|
|
// SCROLLING
|
|
|
|
function scrollCursorIntoView(cm) {
|
|
var coords = scrollPosIntoView(cm, cm.doc.sel.head, null, cm.options.cursorScrollMargin);
|
|
if (!cm.state.focused) return;
|
|
var display = cm.display, box = getRect(display.sizer), doScroll = null;
|
|
if (coords.top + box.top < 0) doScroll = true;
|
|
else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
|
|
if (doScroll != null && !phantom) {
|
|
var hidden = display.cursor.style.display == "none";
|
|
if (hidden) {
|
|
display.cursor.style.display = "";
|
|
display.cursor.style.left = coords.left + "px";
|
|
display.cursor.style.top = (coords.top - display.viewOffset) + "px";
|
|
}
|
|
display.cursor.scrollIntoView(doScroll);
|
|
if (hidden) display.cursor.style.display = "none";
|
|
}
|
|
}
|
|
|
|
function scrollPosIntoView(cm, pos, end, margin) {
|
|
if (margin == null) margin = 0;
|
|
for (;;) {
|
|
var changed = false, coords = cursorCoords(cm, pos);
|
|
var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
|
|
var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),
|
|
Math.min(coords.top, endCoords.top) - margin,
|
|
Math.max(coords.left, endCoords.left),
|
|
Math.max(coords.bottom, endCoords.bottom) + margin);
|
|
var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
|
|
if (scrollPos.scrollTop != null) {
|
|
setScrollTop(cm, scrollPos.scrollTop);
|
|
if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true;
|
|
}
|
|
if (scrollPos.scrollLeft != null) {
|
|
setScrollLeft(cm, scrollPos.scrollLeft);
|
|
if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
|
|
}
|
|
if (!changed) return coords;
|
|
}
|
|
}
|
|
|
|
function scrollIntoView(cm, x1, y1, x2, y2) {
|
|
var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
|
|
if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
|
|
if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);
|
|
}
|
|
|
|
function calculateScrollPos(cm, x1, y1, x2, y2) {
|
|
var display = cm.display, snapMargin = textHeight(cm.display);
|
|
if (y1 < 0) y1 = 0;
|
|
var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {};
|
|
var docBottom = cm.doc.height + paddingVert(display);
|
|
var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
|
|
if (y1 < screentop) {
|
|
result.scrollTop = atTop ? 0 : y1;
|
|
} else if (y2 > screentop + screen) {
|
|
var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen);
|
|
if (newTop != screentop) result.scrollTop = newTop;
|
|
}
|
|
|
|
var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft;
|
|
x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth;
|
|
var gutterw = display.gutters.offsetWidth;
|
|
var atLeft = x1 < gutterw + 10;
|
|
if (x1 < screenleft + gutterw || atLeft) {
|
|
if (atLeft) x1 = 0;
|
|
result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
|
|
} else if (x2 > screenw + screenleft - 3) {
|
|
result.scrollLeft = x2 + 10 - screenw;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
function updateScrollPos(cm, left, top) {
|
|
cm.curOp.updateScrollPos = {scrollLeft: left == null ? cm.doc.scrollLeft : left,
|
|
scrollTop: top == null ? cm.doc.scrollTop : top};
|
|
}
|
|
|
|
function addToScrollPos(cm, left, top) {
|
|
var pos = cm.curOp.updateScrollPos || (cm.curOp.updateScrollPos = {scrollLeft: cm.doc.scrollLeft, scrollTop: cm.doc.scrollTop});
|
|
var scroll = cm.display.scroller;
|
|
pos.scrollTop = Math.max(0, Math.min(scroll.scrollHeight - scroll.clientHeight, pos.scrollTop + top));
|
|
pos.scrollLeft = Math.max(0, Math.min(scroll.scrollWidth - scroll.clientWidth, pos.scrollLeft + left));
|
|
}
|
|
|
|
// API UTILITIES
|
|
|
|
function indentLine(cm, n, how, aggressive) {
|
|
var doc = cm.doc;
|
|
if (how == null) how = "add";
|
|
if (how == "smart") {
|
|
if (!cm.doc.mode.indent) how = "prev";
|
|
else var state = getStateBefore(cm, n);
|
|
}
|
|
|
|
var tabSize = cm.options.tabSize;
|
|
var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
|
|
var curSpaceString = line.text.match(/^\s*/)[0], indentation;
|
|
if (how == "smart") {
|
|
indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
|
|
if (indentation == Pass) {
|
|
if (!aggressive) return;
|
|
how = "prev";
|
|
}
|
|
}
|
|
if (how == "prev") {
|
|
if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
|
|
else indentation = 0;
|
|
} else if (how == "add") {
|
|
indentation = curSpace + cm.options.indentUnit;
|
|
} else if (how == "subtract") {
|
|
indentation = curSpace - cm.options.indentUnit;
|
|
} else if (typeof how == "number") {
|
|
indentation = curSpace + how;
|
|
}
|
|
indentation = Math.max(0, indentation);
|
|
|
|
var indentString = "", pos = 0;
|
|
if (cm.options.indentWithTabs)
|
|
for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
|
|
if (pos < indentation) indentString += spaceStr(indentation - pos);
|
|
|
|
if (indentString == curSpaceString)
|
|
setSelection(cm.doc, Pos(n, curSpaceString.length), Pos(n, curSpaceString.length));
|
|
else
|
|
replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
|
|
line.stateAfter = null;
|
|
}
|
|
|
|
function changeLine(cm, handle, op) {
|
|
var no = handle, line = handle, doc = cm.doc;
|
|
if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
|
|
else no = lineNo(handle);
|
|
if (no == null) return null;
|
|
if (op(line, no)) regChange(cm, no, no + 1);
|
|
else return null;
|
|
return line;
|
|
}
|
|
|
|
function findPosH(doc, pos, dir, unit, visually) {
|
|
var line = pos.line, ch = pos.ch, origDir = dir;
|
|
var lineObj = getLine(doc, line);
|
|
var possible = true;
|
|
function findNextLine() {
|
|
var l = line + dir;
|
|
if (l < doc.first || l >= doc.first + doc.size) return (possible = false);
|
|
line = l;
|
|
return lineObj = getLine(doc, l);
|
|
}
|
|
function moveOnce(boundToLine) {
|
|
var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);
|
|
if (next == null) {
|
|
if (!boundToLine && findNextLine()) {
|
|
if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);
|
|
else ch = dir < 0 ? lineObj.text.length : 0;
|
|
} else return (possible = false);
|
|
} else ch = next;
|
|
return true;
|
|
}
|
|
|
|
if (unit == "char") moveOnce();
|
|
else if (unit == "column") moveOnce(true);
|
|
else if (unit == "word" || unit == "group") {
|
|
var sawType = null, group = unit == "group";
|
|
for (var first = true;; first = false) {
|
|
if (dir < 0 && !moveOnce(!first)) break;
|
|
var cur = lineObj.text.charAt(ch) || "\n";
|
|
var type = isWordChar(cur) ? "w"
|
|
: !group ? null
|
|
: /\s/.test(cur) ? null
|
|
: "p";
|
|
if (sawType && sawType != type) {
|
|
if (dir < 0) {dir = 1; moveOnce();}
|
|
break;
|
|
}
|
|
if (type) sawType = type;
|
|
if (dir > 0 && !moveOnce(!first)) break;
|
|
}
|
|
}
|
|
var result = skipAtomic(doc, Pos(line, ch), origDir, true);
|
|
if (!possible) result.hitSide = true;
|
|
return result;
|
|
}
|
|
|
|
function findPosV(cm, pos, dir, unit) {
|
|
var doc = cm.doc, x = pos.left, y;
|
|
if (unit == "page") {
|
|
var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
|
|
y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display));
|
|
} else if (unit == "line") {
|
|
y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
|
|
}
|
|
for (;;) {
|
|
var target = coordsChar(cm, x, y);
|
|
if (!target.outside) break;
|
|
if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; }
|
|
y += dir * 5;
|
|
}
|
|
return target;
|
|
}
|
|
|
|
function findWordAt(line, pos) {
|
|
var start = pos.ch, end = pos.ch;
|
|
if (line) {
|
|
if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end;
|
|
var startChar = line.charAt(start);
|
|
var check = isWordChar(startChar) ? isWordChar
|
|
: /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);}
|
|
: function(ch) {return !/\s/.test(ch) && !isWordChar(ch);};
|
|
while (start > 0 && check(line.charAt(start - 1))) --start;
|
|
while (end < line.length && check(line.charAt(end))) ++end;
|
|
}
|
|
return {from: Pos(pos.line, start), to: Pos(pos.line, end)};
|
|
}
|
|
|
|
function selectLine(cm, line) {
|
|
extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0)));
|
|
}
|
|
|
|
// PROTOTYPE
|
|
|
|
// The publicly visible API. Note that operation(null, f) means
|
|
// 'wrap f in an operation, performed on its `this` parameter'
|
|
|
|
CodeMirror.prototype = {
|
|
constructor: CodeMirror,
|
|
focus: function(){window.focus(); focusInput(this); onFocus(this); fastPoll(this);},
|
|
|
|
setOption: function(option, value) {
|
|
var options = this.options, old = options[option];
|
|
if (options[option] == value && option != "mode") return;
|
|
options[option] = value;
|
|
if (optionHandlers.hasOwnProperty(option))
|
|
operation(this, optionHandlers[option])(this, value, old);
|
|
},
|
|
|
|
getOption: function(option) {return this.options[option];},
|
|
getDoc: function() {return this.doc;},
|
|
|
|
addKeyMap: function(map, bottom) {
|
|
this.state.keyMaps[bottom ? "push" : "unshift"](map);
|
|
},
|
|
removeKeyMap: function(map) {
|
|
var maps = this.state.keyMaps;
|
|
for (var i = 0; i < maps.length; ++i)
|
|
if (maps[i] == map || (typeof maps[i] != "string" && maps[i].name == map)) {
|
|
maps.splice(i, 1);
|
|
return true;
|
|
}
|
|
},
|
|
|
|
addOverlay: operation(null, function(spec, options) {
|
|
var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
|
|
if (mode.startState) throw new Error("Overlays may not be stateful.");
|
|
this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque});
|
|
this.state.modeGen++;
|
|
regChange(this);
|
|
}),
|
|
removeOverlay: operation(null, function(spec) {
|
|
var overlays = this.state.overlays;
|
|
for (var i = 0; i < overlays.length; ++i) {
|
|
var cur = overlays[i].modeSpec;
|
|
if (cur == spec || typeof spec == "string" && cur.name == spec) {
|
|
overlays.splice(i, 1);
|
|
this.state.modeGen++;
|
|
regChange(this);
|
|
return;
|
|
}
|
|
}
|
|
}),
|
|
|
|
indentLine: operation(null, function(n, dir, aggressive) {
|
|
if (typeof dir != "string" && typeof dir != "number") {
|
|
if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
|
|
else dir = dir ? "add" : "subtract";
|
|
}
|
|
if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);
|
|
}),
|
|
indentSelection: operation(null, function(how) {
|
|
var sel = this.doc.sel;
|
|
if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how);
|
|
var e = sel.to.line - (sel.to.ch ? 0 : 1);
|
|
for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how);
|
|
}),
|
|
|
|
// Fetch the parser token for a given character. Useful for hacks
|
|
// that want to inspect the mode state (say, for completion).
|
|
getTokenAt: function(pos, precise) {
|
|
var doc = this.doc;
|
|
pos = clipPos(doc, pos);
|
|
var state = getStateBefore(this, pos.line, precise), mode = this.doc.mode;
|
|
var line = getLine(doc, pos.line);
|
|
var stream = new StringStream(line.text, this.options.tabSize);
|
|
while (stream.pos < pos.ch && !stream.eol()) {
|
|
stream.start = stream.pos;
|
|
var style = mode.token(stream, state);
|
|
}
|
|
return {start: stream.start,
|
|
end: stream.pos,
|
|
string: stream.current(),
|
|
className: style || null, // Deprecated, use 'type' instead
|
|
type: style || null,
|
|
state: state};
|
|
},
|
|
|
|
getTokenTypeAt: function(pos) {
|
|
pos = clipPos(this.doc, pos);
|
|
var styles = getLineStyles(this, getLine(this.doc, pos.line));
|
|
var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
|
|
if (ch == 0) return styles[2];
|
|
for (;;) {
|
|
var mid = (before + after) >> 1;
|
|
if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid;
|
|
else if (styles[mid * 2 + 1] < ch) before = mid + 1;
|
|
else return styles[mid * 2 + 2];
|
|
}
|
|
},
|
|
|
|
getModeAt: function(pos) {
|
|
var mode = this.doc.mode;
|
|
if (!mode.innerMode) return mode;
|
|
return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode;
|
|
},
|
|
|
|
getHelper: function(pos, type) {
|
|
if (!helpers.hasOwnProperty(type)) return;
|
|
var help = helpers[type], mode = this.getModeAt(pos);
|
|
return mode[type] && help[mode[type]] ||
|
|
mode.helperType && help[mode.helperType] ||
|
|
help[mode.name];
|
|
},
|
|
|
|
getStateAfter: function(line, precise) {
|
|
var doc = this.doc;
|
|
line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
|
|
return getStateBefore(this, line + 1, precise);
|
|
},
|
|
|
|
cursorCoords: function(start, mode) {
|
|
var pos, sel = this.doc.sel;
|
|
if (start == null) pos = sel.head;
|
|
else if (typeof start == "object") pos = clipPos(this.doc, start);
|
|
else pos = start ? sel.from : sel.to;
|
|
return cursorCoords(this, pos, mode || "page");
|
|
},
|
|
|
|
charCoords: function(pos, mode) {
|
|
return charCoords(this, clipPos(this.doc, pos), mode || "page");
|
|
},
|
|
|
|
coordsChar: function(coords, mode) {
|
|
coords = fromCoordSystem(this, coords, mode || "page");
|
|
return coordsChar(this, coords.left, coords.top);
|
|
},
|
|
|
|
lineAtHeight: function(height, mode) {
|
|
height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top;
|
|
return lineAtHeight(this.doc, height + this.display.viewOffset);
|
|
},
|
|
heightAtLine: function(line, mode) {
|
|
var end = false, last = this.doc.first + this.doc.size - 1;
|
|
if (line < this.doc.first) line = this.doc.first;
|
|
else if (line > last) { line = last; end = true; }
|
|
var lineObj = getLine(this.doc, line);
|
|
return intoCoordSystem(this, getLine(this.doc, line), {top: 0, left: 0}, mode || "page").top +
|
|
(end ? lineObj.height : 0);
|
|
},
|
|
|
|
defaultTextHeight: function() { return textHeight(this.display); },
|
|
defaultCharWidth: function() { return charWidth(this.display); },
|
|
|
|
setGutterMarker: operation(null, function(line, gutterID, value) {
|
|
return changeLine(this, line, function(line) {
|
|
var markers = line.gutterMarkers || (line.gutterMarkers = {});
|
|
markers[gutterID] = value;
|
|
if (!value && isEmpty(markers)) line.gutterMarkers = null;
|
|
return true;
|
|
});
|
|
}),
|
|
|
|
clearGutter: operation(null, function(gutterID) {
|
|
var cm = this, doc = cm.doc, i = doc.first;
|
|
doc.iter(function(line) {
|
|
if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
|
|
line.gutterMarkers[gutterID] = null;
|
|
regChange(cm, i, i + 1);
|
|
if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
|
|
}
|
|
++i;
|
|
});
|
|
}),
|
|
|
|
addLineClass: operation(null, function(handle, where, cls) {
|
|
return changeLine(this, handle, function(line) {
|
|
var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
|
|
if (!line[prop]) line[prop] = cls;
|
|
else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").test(line[prop])) return false;
|
|
else line[prop] += " " + cls;
|
|
return true;
|
|
});
|
|
}),
|
|
|
|
removeLineClass: operation(null, function(handle, where, cls) {
|
|
return changeLine(this, handle, function(line) {
|
|
var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
|
|
var cur = line[prop];
|
|
if (!cur) return false;
|
|
else if (cls == null) line[prop] = null;
|
|
else {
|
|
var found = cur.match(new RegExp("(?:^|\\s+)" + cls + "(?:$|\\s+)"));
|
|
if (!found) return false;
|
|
var end = found.index + found[0].length;
|
|
line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
|
|
}
|
|
return true;
|
|
});
|
|
}),
|
|
|
|
addLineWidget: operation(null, function(handle, node, options) {
|
|
return addLineWidget(this, handle, node, options);
|
|
}),
|
|
|
|
removeLineWidget: function(widget) { widget.clear(); },
|
|
|
|
lineInfo: function(line) {
|
|
if (typeof line == "number") {
|
|
if (!isLine(this.doc, line)) return null;
|
|
var n = line;
|
|
line = getLine(this.doc, line);
|
|
if (!line) return null;
|
|
} else {
|
|
var n = lineNo(line);
|
|
if (n == null) return null;
|
|
}
|
|
return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
|
|
textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
|
|
widgets: line.widgets};
|
|
},
|
|
|
|
getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};},
|
|
|
|
addWidget: function(pos, node, scroll, vert, horiz) {
|
|
var display = this.display;
|
|
pos = cursorCoords(this, clipPos(this.doc, pos));
|
|
var top = pos.bottom, left = pos.left;
|
|
node.style.position = "absolute";
|
|
display.sizer.appendChild(node);
|
|
if (vert == "over") {
|
|
top = pos.top;
|
|
} else if (vert == "above" || vert == "near") {
|
|
var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
|
|
hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
|
|
// Default to positioning above (if specified and possible); otherwise default to positioning below
|
|
if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
|
|
top = pos.top - node.offsetHeight;
|
|
else if (pos.bottom + node.offsetHeight <= vspace)
|
|
top = pos.bottom;
|
|
if (left + node.offsetWidth > hspace)
|
|
left = hspace - node.offsetWidth;
|
|
}
|
|
node.style.top = top + "px";
|
|
node.style.left = node.style.right = "";
|
|
if (horiz == "right") {
|
|
left = display.sizer.clientWidth - node.offsetWidth;
|
|
node.style.right = "0px";
|
|
} else {
|
|
if (horiz == "left") left = 0;
|
|
else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2;
|
|
node.style.left = left + "px";
|
|
}
|
|
if (scroll)
|
|
scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
|
|
},
|
|
|
|
triggerOnKeyDown: operation(null, onKeyDown),
|
|
|
|
execCommand: function(cmd) {return commands[cmd](this);},
|
|
|
|
findPosH: function(from, amount, unit, visually) {
|
|
var dir = 1;
|
|
if (amount < 0) { dir = -1; amount = -amount; }
|
|
for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
|
|
cur = findPosH(this.doc, cur, dir, unit, visually);
|
|
if (cur.hitSide) break;
|
|
}
|
|
return cur;
|
|
},
|
|
|
|
moveH: operation(null, function(dir, unit) {
|
|
var sel = this.doc.sel, pos;
|
|
if (sel.shift || sel.extend || posEq(sel.from, sel.to))
|
|
pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually);
|
|
else
|
|
pos = dir < 0 ? sel.from : sel.to;
|
|
extendSelection(this.doc, pos, pos, dir);
|
|
}),
|
|
|
|
deleteH: operation(null, function(dir, unit) {
|
|
var sel = this.doc.sel;
|
|
if (!posEq(sel.from, sel.to)) replaceRange(this.doc, "", sel.from, sel.to, "+delete");
|
|
else replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete");
|
|
this.curOp.userSelChange = true;
|
|
}),
|
|
|
|
findPosV: function(from, amount, unit, goalColumn) {
|
|
var dir = 1, x = goalColumn;
|
|
if (amount < 0) { dir = -1; amount = -amount; }
|
|
for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
|
|
var coords = cursorCoords(this, cur, "div");
|
|
if (x == null) x = coords.left;
|
|
else coords.left = x;
|
|
cur = findPosV(this, coords, dir, unit);
|
|
if (cur.hitSide) break;
|
|
}
|
|
return cur;
|
|
},
|
|
|
|
moveV: operation(null, function(dir, unit) {
|
|
var sel = this.doc.sel;
|
|
var pos = cursorCoords(this, sel.head, "div");
|
|
if (sel.goalColumn != null) pos.left = sel.goalColumn;
|
|
var target = findPosV(this, pos, dir, unit);
|
|
|
|
if (unit == "page") addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top);
|
|
extendSelection(this.doc, target, target, dir);
|
|
sel.goalColumn = pos.left;
|
|
}),
|
|
|
|
toggleOverwrite: function(value) {
|
|
if (value != null && value == this.state.overwrite) return;
|
|
if (this.state.overwrite = !this.state.overwrite)
|
|
this.display.cursor.className += " CodeMirror-overwrite";
|
|
else
|
|
this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", "");
|
|
},
|
|
hasFocus: function() { return this.state.focused; },
|
|
|
|
scrollTo: operation(null, function(x, y) {
|
|
updateScrollPos(this, x, y);
|
|
}),
|
|
getScrollInfo: function() {
|
|
var scroller = this.display.scroller, co = scrollerCutOff;
|
|
return {left: scroller.scrollLeft, top: scroller.scrollTop,
|
|
height: scroller.scrollHeight - co, width: scroller.scrollWidth - co,
|
|
clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co};
|
|
},
|
|
|
|
scrollIntoView: operation(null, function(range, margin) {
|
|
if (range == null) range = {from: this.doc.sel.head, to: null};
|
|
else if (typeof range == "number") range = {from: Pos(range, 0), to: null};
|
|
else if (range.from == null) range = {from: range, to: null};
|
|
if (!range.to) range.to = range.from;
|
|
if (!margin) margin = 0;
|
|
|
|
var coords = range;
|
|
if (range.from.line != null) {
|
|
this.curOp.scrollToPos = {from: range.from, to: range.to, margin: margin};
|
|
coords = {from: cursorCoords(this, range.from),
|
|
to: cursorCoords(this, range.to)};
|
|
}
|
|
var sPos = calculateScrollPos(this, Math.min(coords.from.left, coords.to.left),
|
|
Math.min(coords.from.top, coords.to.top) - margin,
|
|
Math.max(coords.from.right, coords.to.right),
|
|
Math.max(coords.from.bottom, coords.to.bottom) + margin);
|
|
updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop);
|
|
}),
|
|
|
|
setSize: operation(null, function(width, height) {
|
|
function interpret(val) {
|
|
return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
|
|
}
|
|
if (width != null) this.display.wrapper.style.width = interpret(width);
|
|
if (height != null) this.display.wrapper.style.height = interpret(height);
|
|
if (this.options.lineWrapping)
|
|
this.display.measureLineCache.length = this.display.measureLineCachePos = 0;
|
|
this.curOp.forceUpdate = true;
|
|
}),
|
|
|
|
operation: function(f){return runInOp(this, f);},
|
|
|
|
refresh: operation(null, function() {
|
|
var badHeight = this.display.cachedTextHeight == null;
|
|
clearCaches(this);
|
|
updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop);
|
|
regChange(this);
|
|
if (badHeight) estimateLineHeights(this);
|
|
}),
|
|
|
|
swapDoc: operation(null, function(doc) {
|
|
var old = this.doc;
|
|
old.cm = null;
|
|
attachDoc(this, doc);
|
|
clearCaches(this);
|
|
resetInput(this, true);
|
|
updateScrollPos(this, doc.scrollLeft, doc.scrollTop);
|
|
signalLater(this, "swapDoc", this, old);
|
|
return old;
|
|
}),
|
|
|
|
getInputField: function(){return this.display.input;},
|
|
getWrapperElement: function(){return this.display.wrapper;},
|
|
getScrollerElement: function(){return this.display.scroller;},
|
|
getGutterElement: function(){return this.display.gutters;}
|
|
};
|
|
eventMixin(CodeMirror);
|
|
|
|
// OPTION DEFAULTS
|
|
|
|
var optionHandlers = CodeMirror.optionHandlers = {};
|
|
|
|
// The default configuration options.
|
|
var defaults = CodeMirror.defaults = {};
|
|
|
|
function option(name, deflt, handle, notOnInit) {
|
|
CodeMirror.defaults[name] = deflt;
|
|
if (handle) optionHandlers[name] =
|
|
notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;
|
|
}
|
|
|
|
var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}};
|
|
|
|
// These two are, on init, called from the constructor because they
|
|
// have to be initialized before the editor can start at all.
|
|
option("value", "", function(cm, val) {
|
|
cm.setValue(val);
|
|
}, true);
|
|
option("mode", null, function(cm, val) {
|
|
cm.doc.modeOption = val;
|
|
loadMode(cm);
|
|
}, true);
|
|
|
|
option("indentUnit", 2, loadMode, true);
|
|
option("indentWithTabs", false);
|
|
option("smartIndent", true);
|
|
option("tabSize", 4, function(cm) {
|
|
loadMode(cm);
|
|
clearCaches(cm);
|
|
regChange(cm);
|
|
}, true);
|
|
option("electricChars", true);
|
|
option("rtlMoveVisually", !windows);
|
|
|
|
option("theme", "default", function(cm) {
|
|
themeChanged(cm);
|
|
guttersChanged(cm);
|
|
}, true);
|
|
option("keyMap", "default", keyMapChanged);
|
|
option("extraKeys", null);
|
|
|
|
option("onKeyEvent", null);
|
|
option("onDragEvent", null);
|
|
|
|
option("lineWrapping", false, wrappingChanged, true);
|
|
option("gutters", [], function(cm) {
|
|
setGuttersForLineNumbers(cm.options);
|
|
guttersChanged(cm);
|
|
}, true);
|
|
option("fixedGutter", true, function(cm, val) {
|
|
cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
|
|
cm.refresh();
|
|
}, true);
|
|
option("coverGutterNextToScrollbar", false, updateScrollbars, true);
|
|
option("lineNumbers", false, function(cm) {
|
|
setGuttersForLineNumbers(cm.options);
|
|
guttersChanged(cm);
|
|
}, true);
|
|
option("firstLineNumber", 1, guttersChanged, true);
|
|
option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true);
|
|
option("showCursorWhenSelecting", false, updateSelection, true);
|
|
|
|
option("resetSelectionOnContextMenu", true);
|
|
|
|
option("readOnly", false, function(cm, val) {
|
|
if (val == "nocursor") {onBlur(cm); cm.display.input.blur();}
|
|
else if (!val) resetInput(cm, true);
|
|
});
|
|
option("dragDrop", true);
|
|
|
|
option("cursorBlinkRate", 530);
|
|
option("cursorScrollMargin", 0);
|
|
option("cursorHeight", 1);
|
|
option("workTime", 100);
|
|
option("workDelay", 100);
|
|
option("flattenSpans", true);
|
|
option("pollInterval", 100);
|
|
option("undoDepth", 40, function(cm, val){cm.doc.history.undoDepth = val;});
|
|
option("historyEventDelay", 500);
|
|
option("viewportMargin", 10, function(cm){cm.refresh();}, true);
|
|
option("maxHighlightLength", 10000, function(cm){loadMode(cm); cm.refresh();}, true);
|
|
option("crudeMeasuringFrom", 10000);
|
|
option("moveInputWithCursor", true, function(cm, val) {
|
|
if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0;
|
|
});
|
|
|
|
option("tabindex", null, function(cm, val) {
|
|
cm.display.input.tabIndex = val || "";
|
|
});
|
|
option("autofocus", null);
|
|
|
|
// MODE DEFINITION AND QUERYING
|
|
|
|
// Known modes, by name and by MIME
|
|
var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
|
|
|
|
CodeMirror.defineMode = function(name, mode) {
|
|
if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
|
|
if (arguments.length > 2) {
|
|
mode.dependencies = [];
|
|
for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);
|
|
}
|
|
modes[name] = mode;
|
|
};
|
|
|
|
CodeMirror.defineMIME = function(mime, spec) {
|
|
mimeModes[mime] = spec;
|
|
};
|
|
|
|
CodeMirror.resolveMode = function(spec) {
|
|
if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
|
|
spec = mimeModes[spec];
|
|
} else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
|
|
var found = mimeModes[spec.name];
|
|
spec = createObj(found, spec);
|
|
spec.name = found.name;
|
|
} else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
|
|
return CodeMirror.resolveMode("application/xml");
|
|
}
|
|
if (typeof spec == "string") return {name: spec};
|
|
else return spec || {name: "null"};
|
|
};
|
|
|
|
CodeMirror.getMode = function(options, spec) {
|
|
var spec = CodeMirror.resolveMode(spec);
|
|
var mfactory = modes[spec.name];
|
|
if (!mfactory) return CodeMirror.getMode(options, "text/plain");
|
|
var modeObj = mfactory(options, spec);
|
|
if (modeExtensions.hasOwnProperty(spec.name)) {
|
|
var exts = modeExtensions[spec.name];
|
|
for (var prop in exts) {
|
|
if (!exts.hasOwnProperty(prop)) continue;
|
|
if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
|
|
modeObj[prop] = exts[prop];
|
|
}
|
|
}
|
|
modeObj.name = spec.name;
|
|
|
|
return modeObj;
|
|
};
|
|
|
|
CodeMirror.defineMode("null", function() {
|
|
return {token: function(stream) {stream.skipToEnd();}};
|
|
});
|
|
CodeMirror.defineMIME("text/plain", "null");
|
|
|
|
var modeExtensions = CodeMirror.modeExtensions = {};
|
|
CodeMirror.extendMode = function(mode, properties) {
|
|
var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
|
|
copyObj(properties, exts);
|
|
};
|
|
|
|
// EXTENSIONS
|
|
|
|
CodeMirror.defineExtension = function(name, func) {
|
|
CodeMirror.prototype[name] = func;
|
|
};
|
|
CodeMirror.defineDocExtension = function(name, func) {
|
|
Doc.prototype[name] = func;
|
|
};
|
|
CodeMirror.defineOption = option;
|
|
|
|
var initHooks = [];
|
|
CodeMirror.defineInitHook = function(f) {initHooks.push(f);};
|
|
|
|
var helpers = CodeMirror.helpers = {};
|
|
CodeMirror.registerHelper = function(type, name, value) {
|
|
if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {};
|
|
helpers[type][name] = value;
|
|
};
|
|
|
|
// UTILITIES
|
|
|
|
CodeMirror.isWordChar = isWordChar;
|
|
|
|
// MODE STATE HANDLING
|
|
|
|
// Utility functions for working with state. Exported because modes
|
|
// sometimes need to do this.
|
|
function copyState(mode, state) {
|
|
if (state === true) return state;
|
|
if (mode.copyState) return mode.copyState(state);
|
|
var nstate = {};
|
|
for (var n in state) {
|
|
var val = state[n];
|
|
if (val instanceof Array) val = val.concat([]);
|
|
nstate[n] = val;
|
|
}
|
|
return nstate;
|
|
}
|
|
CodeMirror.copyState = copyState;
|
|
|
|
function startState(mode, a1, a2) {
|
|
return mode.startState ? mode.startState(a1, a2) : true;
|
|
}
|
|
CodeMirror.startState = startState;
|
|
|
|
CodeMirror.innerMode = function(mode, state) {
|
|
while (mode.innerMode) {
|
|
var info = mode.innerMode(state);
|
|
if (!info || info.mode == mode) break;
|
|
state = info.state;
|
|
mode = info.mode;
|
|
}
|
|
return info || {mode: mode, state: state};
|
|
};
|
|
|
|
// STANDARD COMMANDS
|
|
|
|
var commands = CodeMirror.commands = {
|
|
selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()));},
|
|
killLine: function(cm) {
|
|
var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
|
|
if (!sel && cm.getLine(from.line).length == from.ch)
|
|
cm.replaceRange("", from, Pos(from.line + 1, 0), "+delete");
|
|
else cm.replaceRange("", from, sel ? to : Pos(from.line), "+delete");
|
|
},
|
|
deleteLine: function(cm) {
|
|
var l = cm.getCursor().line;
|
|
cm.replaceRange("", Pos(l, 0), Pos(l), "+delete");
|
|
},
|
|
delLineLeft: function(cm) {
|
|
var cur = cm.getCursor();
|
|
cm.replaceRange("", Pos(cur.line, 0), cur, "+delete");
|
|
},
|
|
undo: function(cm) {cm.undo();},
|
|
redo: function(cm) {cm.redo();},
|
|
goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},
|
|
goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},
|
|
goLineStart: function(cm) {
|
|
cm.extendSelection(lineStart(cm, cm.getCursor().line));
|
|
},
|
|
goLineStartSmart: function(cm) {
|
|
var cur = cm.getCursor(), start = lineStart(cm, cur.line);
|
|
var line = cm.getLineHandle(start.line);
|
|
var order = getOrder(line);
|
|
if (!order || order[0].level == 0) {
|
|
var firstNonWS = Math.max(0, line.text.search(/\S/));
|
|
var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch;
|
|
cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS));
|
|
} else cm.extendSelection(start);
|
|
},
|
|
goLineEnd: function(cm) {
|
|
cm.extendSelection(lineEnd(cm, cm.getCursor().line));
|
|
},
|
|
goLineRight: function(cm) {
|
|
var top = cm.charCoords(cm.getCursor(), "div").top + 5;
|
|
cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"));
|
|
},
|
|
goLineLeft: function(cm) {
|
|
var top = cm.charCoords(cm.getCursor(), "div").top + 5;
|
|
cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div"));
|
|
},
|
|
goLineUp: function(cm) {cm.moveV(-1, "line");},
|
|
goLineDown: function(cm) {cm.moveV(1, "line");},
|
|
goPageUp: function(cm) {cm.moveV(-1, "page");},
|
|
goPageDown: function(cm) {cm.moveV(1, "page");},
|
|
goCharLeft: function(cm) {cm.moveH(-1, "char");},
|
|
goCharRight: function(cm) {cm.moveH(1, "char");},
|
|
goColumnLeft: function(cm) {cm.moveH(-1, "column");},
|
|
goColumnRight: function(cm) {cm.moveH(1, "column");},
|
|
goWordLeft: function(cm) {cm.moveH(-1, "word");},
|
|
goGroupRight: function(cm) {cm.moveH(1, "group");},
|
|
goGroupLeft: function(cm) {cm.moveH(-1, "group");},
|
|
goWordRight: function(cm) {cm.moveH(1, "word");},
|
|
delCharBefore: function(cm) {cm.deleteH(-1, "char");},
|
|
delCharAfter: function(cm) {cm.deleteH(1, "char");},
|
|
delWordBefore: function(cm) {cm.deleteH(-1, "word");},
|
|
delWordAfter: function(cm) {cm.deleteH(1, "word");},
|
|
delGroupBefore: function(cm) {cm.deleteH(-1, "group");},
|
|
delGroupAfter: function(cm) {cm.deleteH(1, "group");},
|
|
indentAuto: function(cm) {cm.indentSelection("smart");},
|
|
indentMore: function(cm) {cm.indentSelection("add");},
|
|
indentLess: function(cm) {cm.indentSelection("subtract");},
|
|
insertTab: function(cm) {cm.replaceSelection("\t", "end", "+input");},
|
|
defaultTab: function(cm) {
|
|
if (cm.somethingSelected()) cm.indentSelection("add");
|
|
else cm.replaceSelection("\t", "end", "+input");
|
|
},
|
|
transposeChars: function(cm) {
|
|
var cur = cm.getCursor(), line = cm.getLine(cur.line);
|
|
if (cur.ch > 0 && cur.ch < line.length - 1)
|
|
cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
|
|
Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1));
|
|
},
|
|
newlineAndIndent: function(cm) {
|
|
operation(cm, function() {
|
|
cm.replaceSelection("\n", "end", "+input");
|
|
cm.indentLine(cm.getCursor().line, null, true);
|
|
})();
|
|
},
|
|
toggleOverwrite: function(cm) {cm.toggleOverwrite();}
|
|
};
|
|
|
|
// STANDARD KEYMAPS
|
|
|
|
var keyMap = CodeMirror.keyMap = {};
|
|
keyMap.basic = {
|
|
"Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
|
|
"End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
|
|
"Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
|
|
"Tab": "defaultTab", "Shift-Tab": "indentAuto",
|
|
"Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
|
|
};
|
|
// Note that the save and find-related commands aren't defined by
|
|
// default. Unknown commands are simply ignored.
|
|
keyMap.pcDefault = {
|
|
"Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
|
|
"Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
|
|
"Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
|
|
"Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
|
|
"Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
|
|
"Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
|
|
fallthrough: "basic"
|
|
};
|
|
keyMap.macDefault = {
|
|
"Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
|
|
"Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
|
|
"Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delGroupBefore",
|
|
"Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
|
|
"Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
|
|
"Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft",
|
|
fallthrough: ["basic", "emacsy"]
|
|
};
|
|
keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
|
|
keyMap.emacsy = {
|
|
"Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
|
|
"Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
|
|
"Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
|
|
"Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
|
|
};
|
|
|
|
// KEYMAP DISPATCH
|
|
|
|
function getKeyMap(val) {
|
|
if (typeof val == "string") return keyMap[val];
|
|
else return val;
|
|
}
|
|
|
|
function lookupKey(name, maps, handle) {
|
|
function lookup(map) {
|
|
map = getKeyMap(map);
|
|
var found = map[name];
|
|
if (found === false) return "stop";
|
|
if (found != null && handle(found)) return true;
|
|
if (map.nofallthrough) return "stop";
|
|
|
|
var fallthrough = map.fallthrough;
|
|
if (fallthrough == null) return false;
|
|
if (Object.prototype.toString.call(fallthrough) != "[object Array]")
|
|
return lookup(fallthrough);
|
|
for (var i = 0, e = fallthrough.length; i < e; ++i) {
|
|
var done = lookup(fallthrough[i]);
|
|
if (done) return done;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
for (var i = 0; i < maps.length; ++i) {
|
|
var done = lookup(maps[i]);
|
|
if (done) return done != "stop";
|
|
}
|
|
}
|
|
function isModifierKey(event) {
|
|
var name = keyNames[event.keyCode];
|
|
return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
|
|
}
|
|
function keyName(event, noShift) {
|
|
if (opera && event.keyCode == 34 && event["char"]) return false;
|
|
var name = keyNames[event.keyCode];
|
|
if (name == null || event.altGraphKey) return false;
|
|
if (event.altKey) name = "Alt-" + name;
|
|
if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name;
|
|
if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name;
|
|
if (!noShift && event.shiftKey) name = "Shift-" + name;
|
|
return name;
|
|
}
|
|
CodeMirror.lookupKey = lookupKey;
|
|
CodeMirror.isModifierKey = isModifierKey;
|
|
CodeMirror.keyName = keyName;
|
|
|
|
// FROMTEXTAREA
|
|
|
|
CodeMirror.fromTextArea = function(textarea, options) {
|
|
if (!options) options = {};
|
|
options.value = textarea.value;
|
|
if (!options.tabindex && textarea.tabindex)
|
|
options.tabindex = textarea.tabindex;
|
|
if (!options.placeholder && textarea.placeholder)
|
|
options.placeholder = textarea.placeholder;
|
|
// Set autofocus to true if this textarea is focused, or if it has
|
|
// autofocus and no other element is focused.
|
|
if (options.autofocus == null) {
|
|
var hasFocus = document.body;
|
|
// doc.activeElement occasionally throws on IE
|
|
try { hasFocus = document.activeElement; } catch(e) {}
|
|
options.autofocus = hasFocus == textarea ||
|
|
textarea.getAttribute("autofocus") != null && hasFocus == document.body;
|
|
}
|
|
|
|
function save() {textarea.value = cm.getValue();}
|
|
if (textarea.form) {
|
|
on(textarea.form, "submit", save);
|
|
// Deplorable hack to make the submit method do the right thing.
|
|
if (!options.leaveSubmitMethodAlone) {
|
|
var form = textarea.form, realSubmit = form.submit;
|
|
try {
|
|
var wrappedSubmit = form.submit = function() {
|
|
save();
|
|
form.submit = realSubmit;
|
|
form.submit();
|
|
form.submit = wrappedSubmit;
|
|
};
|
|
} catch(e) {}
|
|
}
|
|
}
|
|
|
|
textarea.style.display = "none";
|
|
var cm = CodeMirror(function(node) {
|
|
textarea.parentNode.insertBefore(node, textarea.nextSibling);
|
|
}, options);
|
|
cm.save = save;
|
|
cm.getTextArea = function() { return textarea; };
|
|
cm.toTextArea = function() {
|
|
save();
|
|
textarea.parentNode.removeChild(cm.getWrapperElement());
|
|
textarea.style.display = "";
|
|
if (textarea.form) {
|
|
off(textarea.form, "submit", save);
|
|
if (typeof textarea.form.submit == "function")
|
|
textarea.form.submit = realSubmit;
|
|
}
|
|
};
|
|
return cm;
|
|
};
|
|
|
|
// STRING STREAM
|
|
|
|
// Fed to the mode parsers, provides helper functions to make
|
|
// parsers more succinct.
|
|
|
|
// The character stream used by a mode's parser.
|
|
function StringStream(string, tabSize) {
|
|
this.pos = this.start = 0;
|
|
this.string = string;
|
|
this.tabSize = tabSize || 8;
|
|
this.lastColumnPos = this.lastColumnValue = 0;
|
|
}
|
|
|
|
StringStream.prototype = {
|
|
eol: function() {return this.pos >= this.string.length;},
|
|
sol: function() {return this.pos == 0;},
|
|
peek: function() {return this.string.charAt(this.pos) || undefined;},
|
|
next: function() {
|
|
if (this.pos < this.string.length)
|
|
return this.string.charAt(this.pos++);
|
|
},
|
|
eat: function(match) {
|
|
var ch = this.string.charAt(this.pos);
|
|
if (typeof match == "string") var ok = ch == match;
|
|
else var ok = ch && (match.test ? match.test(ch) : match(ch));
|
|
if (ok) {++this.pos; return ch;}
|
|
},
|
|
eatWhile: function(match) {
|
|
var start = this.pos;
|
|
while (this.eat(match)){}
|
|
return this.pos > start;
|
|
},
|
|
eatSpace: function() {
|
|
var start = this.pos;
|
|
while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
|
|
return this.pos > start;
|
|
},
|
|
skipToEnd: function() {this.pos = this.string.length;},
|
|
skipTo: function(ch) {
|
|
var found = this.string.indexOf(ch, this.pos);
|
|
if (found > -1) {this.pos = found; return true;}
|
|
},
|
|
backUp: function(n) {this.pos -= n;},
|
|
column: function() {
|
|
if (this.lastColumnPos < this.start) {
|
|
this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
|
|
this.lastColumnPos = this.start;
|
|
}
|
|
return this.lastColumnValue;
|
|
},
|
|
indentation: function() {return countColumn(this.string, null, this.tabSize);},
|
|
match: function(pattern, consume, caseInsensitive) {
|
|
if (typeof pattern == "string") {
|
|
var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
|
|
var substr = this.string.substr(this.pos, pattern.length);
|
|
if (cased(substr) == cased(pattern)) {
|
|
if (consume !== false) this.pos += pattern.length;
|
|
return true;
|
|
}
|
|
} else {
|
|
var match = this.string.slice(this.pos).match(pattern);
|
|
if (match && match.index > 0) return null;
|
|
if (match && consume !== false) this.pos += match[0].length;
|
|
return match;
|
|
}
|
|
},
|
|
current: function(){return this.string.slice(this.start, this.pos);}
|
|
};
|
|
CodeMirror.StringStream = StringStream;
|
|
|
|
// TEXTMARKERS
|
|
|
|
function TextMarker(doc, type) {
|
|
this.lines = [];
|
|
this.type = type;
|
|
this.doc = doc;
|
|
}
|
|
CodeMirror.TextMarker = TextMarker;
|
|
eventMixin(TextMarker);
|
|
|
|
TextMarker.prototype.clear = function() {
|
|
if (this.explicitlyCleared) return;
|
|
var cm = this.doc.cm, withOp = cm && !cm.curOp;
|
|
if (withOp) startOperation(cm);
|
|
if (hasHandler(this, "clear")) {
|
|
var found = this.find();
|
|
if (found) signalLater(this, "clear", found.from, found.to);
|
|
}
|
|
var min = null, max = null;
|
|
for (var i = 0; i < this.lines.length; ++i) {
|
|
var line = this.lines[i];
|
|
var span = getMarkedSpanFor(line.markedSpans, this);
|
|
if (span.to != null) max = lineNo(line);
|
|
line.markedSpans = removeMarkedSpan(line.markedSpans, span);
|
|
if (span.from != null)
|
|
min = lineNo(line);
|
|
else if (this.collapsed && !lineIsHidden(this.doc, line) && cm)
|
|
updateLineHeight(line, textHeight(cm.display));
|
|
}
|
|
if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) {
|
|
var visual = visualLine(cm.doc, this.lines[i]), len = lineLength(cm.doc, visual);
|
|
if (len > cm.display.maxLineLength) {
|
|
cm.display.maxLine = visual;
|
|
cm.display.maxLineLength = len;
|
|
cm.display.maxLineChanged = true;
|
|
}
|
|
}
|
|
|
|
if (min != null && cm) regChange(cm, min, max + 1);
|
|
this.lines.length = 0;
|
|
this.explicitlyCleared = true;
|
|
if (this.atomic && this.doc.cantEdit) {
|
|
this.doc.cantEdit = false;
|
|
if (cm) reCheckSelection(cm);
|
|
}
|
|
if (withOp) endOperation(cm);
|
|
};
|
|
|
|
TextMarker.prototype.find = function() {
|
|
var from, to;
|
|
for (var i = 0; i < this.lines.length; ++i) {
|
|
var line = this.lines[i];
|
|
var span = getMarkedSpanFor(line.markedSpans, this);
|
|
if (span.from != null || span.to != null) {
|
|
var found = lineNo(line);
|
|
if (span.from != null) from = Pos(found, span.from);
|
|
if (span.to != null) to = Pos(found, span.to);
|
|
}
|
|
}
|
|
if (this.type == "bookmark") return from;
|
|
return from && {from: from, to: to};
|
|
};
|
|
|
|
TextMarker.prototype.changed = function() {
|
|
var pos = this.find(), cm = this.doc.cm;
|
|
if (!pos || !cm) return;
|
|
if (this.type != "bookmark") pos = pos.from;
|
|
var line = getLine(this.doc, pos.line);
|
|
clearCachedMeasurement(cm, line);
|
|
if (pos.line >= cm.display.showingFrom && pos.line < cm.display.showingTo) {
|
|
for (var node = cm.display.lineDiv.firstChild; node; node = node.nextSibling) if (node.lineObj == line) {
|
|
if (node.offsetHeight != line.height) updateLineHeight(line, node.offsetHeight);
|
|
break;
|
|
}
|
|
runInOp(cm, function() {
|
|
cm.curOp.selectionChanged = cm.curOp.forceUpdate = cm.curOp.updateMaxLine = true;
|
|
});
|
|
}
|
|
};
|
|
|
|
TextMarker.prototype.attachLine = function(line) {
|
|
if (!this.lines.length && this.doc.cm) {
|
|
var op = this.doc.cm.curOp;
|
|
if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
|
|
(op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this);
|
|
}
|
|
this.lines.push(line);
|
|
};
|
|
TextMarker.prototype.detachLine = function(line) {
|
|
this.lines.splice(indexOf(this.lines, line), 1);
|
|
if (!this.lines.length && this.doc.cm) {
|
|
var op = this.doc.cm.curOp;
|
|
(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
|
|
}
|
|
};
|
|
|
|
function markText(doc, from, to, options, type) {
|
|
if (options && options.shared) return markTextShared(doc, from, to, options, type);
|
|
if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);
|
|
|
|
var marker = new TextMarker(doc, type);
|
|
if (posLess(to, from) || posEq(from, to) && type == "range" &&
|
|
!(options.inclusiveLeft && options.inclusiveRight))
|
|
return marker;
|
|
if (options) copyObj(options, marker);
|
|
if (marker.replacedWith) {
|
|
marker.collapsed = true;
|
|
marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget");
|
|
if (!options.handleMouseEvents) marker.replacedWith.ignoreEvents = true;
|
|
}
|
|
if (marker.collapsed) sawCollapsedSpans = true;
|
|
|
|
if (marker.addToHistory)
|
|
addToHistory(doc, {from: from, to: to, origin: "markText"},
|
|
{head: doc.sel.head, anchor: doc.sel.anchor}, NaN);
|
|
|
|
var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd, cm = doc.cm, updateMaxLine;
|
|
doc.iter(curLine, to.line + 1, function(line) {
|
|
if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(doc, line) == cm.display.maxLine)
|
|
updateMaxLine = true;
|
|
var span = {from: null, to: null, marker: marker};
|
|
size += line.text.length;
|
|
if (curLine == from.line) {span.from = from.ch; size -= from.ch;}
|
|
if (curLine == to.line) {span.to = to.ch; size -= line.text.length - to.ch;}
|
|
if (marker.collapsed) {
|
|
if (curLine == to.line) collapsedAtEnd = collapsedSpanAt(line, to.ch);
|
|
if (curLine == from.line) collapsedAtStart = collapsedSpanAt(line, from.ch);
|
|
else updateLineHeight(line, 0);
|
|
}
|
|
addMarkedSpan(line, span);
|
|
++curLine;
|
|
});
|
|
if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) {
|
|
if (lineIsHidden(doc, line)) updateLineHeight(line, 0);
|
|
});
|
|
|
|
if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); });
|
|
|
|
if (marker.readOnly) {
|
|
sawReadOnlySpans = true;
|
|
if (doc.history.done.length || doc.history.undone.length)
|
|
doc.clearHistory();
|
|
}
|
|
if (marker.collapsed) {
|
|
if (collapsedAtStart != collapsedAtEnd)
|
|
throw new Error("Inserting collapsed marker overlapping an existing one");
|
|
marker.size = size;
|
|
marker.atomic = true;
|
|
}
|
|
if (cm) {
|
|
if (updateMaxLine) cm.curOp.updateMaxLine = true;
|
|
if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.collapsed)
|
|
regChange(cm, from.line, to.line + 1);
|
|
if (marker.atomic) reCheckSelection(cm);
|
|
}
|
|
return marker;
|
|
}
|
|
|
|
// SHARED TEXTMARKERS
|
|
|
|
function SharedTextMarker(markers, primary) {
|
|
this.markers = markers;
|
|
this.primary = primary;
|
|
for (var i = 0, me = this; i < markers.length; ++i) {
|
|
markers[i].parent = this;
|
|
on(markers[i], "clear", function(){me.clear();});
|
|
}
|
|
}
|
|
CodeMirror.SharedTextMarker = SharedTextMarker;
|
|
eventMixin(SharedTextMarker);
|
|
|
|
SharedTextMarker.prototype.clear = function() {
|
|
if (this.explicitlyCleared) return;
|
|
this.explicitlyCleared = true;
|
|
for (var i = 0; i < this.markers.length; ++i)
|
|
this.markers[i].clear();
|
|
signalLater(this, "clear");
|
|
};
|
|
SharedTextMarker.prototype.find = function() {
|
|
return this.primary.find();
|
|
};
|
|
|
|
function markTextShared(doc, from, to, options, type) {
|
|
options = copyObj(options);
|
|
options.shared = false;
|
|
var markers = [markText(doc, from, to, options, type)], primary = markers[0];
|
|
var widget = options.replacedWith;
|
|
linkedDocs(doc, function(doc) {
|
|
if (widget) options.replacedWith = widget.cloneNode(true);
|
|
markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
|
|
for (var i = 0; i < doc.linked.length; ++i)
|
|
if (doc.linked[i].isParent) return;
|
|
primary = lst(markers);
|
|
});
|
|
return new SharedTextMarker(markers, primary);
|
|
}
|
|
|
|
// TEXTMARKER SPANS
|
|
|
|
function getMarkedSpanFor(spans, marker) {
|
|
if (spans) for (var i = 0; i < spans.length; ++i) {
|
|
var span = spans[i];
|
|
if (span.marker == marker) return span;
|
|
}
|
|
}
|
|
function removeMarkedSpan(spans, span) {
|
|
for (var r, i = 0; i < spans.length; ++i)
|
|
if (spans[i] != span) (r || (r = [])).push(spans[i]);
|
|
return r;
|
|
}
|
|
function addMarkedSpan(line, span) {
|
|
line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
|
|
span.marker.attachLine(line);
|
|
}
|
|
|
|
function markedSpansBefore(old, startCh, isInsert) {
|
|
if (old) for (var i = 0, nw; i < old.length; ++i) {
|
|
var span = old[i], marker = span.marker;
|
|
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
|
|
if (startsBefore ||
|
|
(marker.inclusiveLeft && marker.inclusiveRight || marker.type == "bookmark") &&
|
|
span.from == startCh && (!isInsert || !span.marker.insertLeft)) {
|
|
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
|
|
(nw || (nw = [])).push({from: span.from,
|
|
to: endsAfter ? null : span.to,
|
|
marker: marker});
|
|
}
|
|
}
|
|
return nw;
|
|
}
|
|
|
|
function markedSpansAfter(old, endCh, isInsert) {
|
|
if (old) for (var i = 0, nw; i < old.length; ++i) {
|
|
var span = old[i], marker = span.marker;
|
|
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
|
|
if (endsAfter || marker.type == "bookmark" && span.from == endCh && (!isInsert || span.marker.insertLeft)) {
|
|
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
|
|
(nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh,
|
|
to: span.to == null ? null : span.to - endCh,
|
|
marker: marker});
|
|
}
|
|
}
|
|
return nw;
|
|
}
|
|
|
|
function stretchSpansOverChange(doc, change) {
|
|
var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
|
|
var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
|
|
if (!oldFirst && !oldLast) return null;
|
|
|
|
var startCh = change.from.ch, endCh = change.to.ch, isInsert = posEq(change.from, change.to);
|
|
// Get the spans that 'stick out' on both sides
|
|
var first = markedSpansBefore(oldFirst, startCh, isInsert);
|
|
var last = markedSpansAfter(oldLast, endCh, isInsert);
|
|
|
|
// Next, merge those two ends
|
|
var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
|
|
if (first) {
|
|
// Fix up .to properties of first
|
|
for (var i = 0; i < first.length; ++i) {
|
|
var span = first[i];
|
|
if (span.to == null) {
|
|
var found = getMarkedSpanFor(last, span.marker);
|
|
if (!found) span.to = startCh;
|
|
else if (sameLine) span.to = found.to == null ? null : found.to + offset;
|
|
}
|
|
}
|
|
}
|
|
if (last) {
|
|
// Fix up .from in last (or move them into first in case of sameLine)
|
|
for (var i = 0; i < last.length; ++i) {
|
|
var span = last[i];
|
|
if (span.to != null) span.to += offset;
|
|
if (span.from == null) {
|
|
var found = getMarkedSpanFor(first, span.marker);
|
|
if (!found) {
|
|
span.from = offset;
|
|
if (sameLine) (first || (first = [])).push(span);
|
|
}
|
|
} else {
|
|
span.from += offset;
|
|
if (sameLine) (first || (first = [])).push(span);
|
|
}
|
|
}
|
|
}
|
|
if (sameLine && first) {
|
|
// Make sure we didn't create any zero-length spans
|
|
for (var i = 0; i < first.length; ++i)
|
|
if (first[i].from != null && first[i].from == first[i].to && first[i].marker.type != "bookmark")
|
|
first.splice(i--, 1);
|
|
if (!first.length) first = null;
|
|
}
|
|
|
|
var newMarkers = [first];
|
|
if (!sameLine) {
|
|
// Fill gap with whole-line-spans
|
|
var gap = change.text.length - 2, gapMarkers;
|
|
if (gap > 0 && first)
|
|
for (var i = 0; i < first.length; ++i)
|
|
if (first[i].to == null)
|
|
(gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker});
|
|
for (var i = 0; i < gap; ++i)
|
|
newMarkers.push(gapMarkers);
|
|
newMarkers.push(last);
|
|
}
|
|
return newMarkers;
|
|
}
|
|
|
|
function mergeOldSpans(doc, change) {
|
|
var old = getOldSpans(doc, change);
|
|
var stretched = stretchSpansOverChange(doc, change);
|
|
if (!old) return stretched;
|
|
if (!stretched) return old;
|
|
|
|
for (var i = 0; i < old.length; ++i) {
|
|
var oldCur = old[i], stretchCur = stretched[i];
|
|
if (oldCur && stretchCur) {
|
|
spans: for (var j = 0; j < stretchCur.length; ++j) {
|
|
var span = stretchCur[j];
|
|
for (var k = 0; k < oldCur.length; ++k)
|
|
if (oldCur[k].marker == span.marker) continue spans;
|
|
oldCur.push(span);
|
|
}
|
|
} else if (stretchCur) {
|
|
old[i] = stretchCur;
|
|
}
|
|
}
|
|
return old;
|
|
}
|
|
|
|
function removeReadOnlyRanges(doc, from, to) {
|
|
var markers = null;
|
|
doc.iter(from.line, to.line + 1, function(line) {
|
|
if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
|
|
var mark = line.markedSpans[i].marker;
|
|
if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
|
|
(markers || (markers = [])).push(mark);
|
|
}
|
|
});
|
|
if (!markers) return null;
|
|
var parts = [{from: from, to: to}];
|
|
for (var i = 0; i < markers.length; ++i) {
|
|
var mk = markers[i], m = mk.find();
|
|
for (var j = 0; j < parts.length; ++j) {
|
|
var p = parts[j];
|
|
if (posLess(p.to, m.from) || posLess(m.to, p.from)) continue;
|
|
var newParts = [j, 1];
|
|
if (posLess(p.from, m.from) || !mk.inclusiveLeft && posEq(p.from, m.from))
|
|
newParts.push({from: p.from, to: m.from});
|
|
if (posLess(m.to, p.to) || !mk.inclusiveRight && posEq(p.to, m.to))
|
|
newParts.push({from: m.to, to: p.to});
|
|
parts.splice.apply(parts, newParts);
|
|
j += newParts.length - 1;
|
|
}
|
|
}
|
|
return parts;
|
|
}
|
|
|
|
function collapsedSpanAt(line, ch) {
|
|
var sps = sawCollapsedSpans && line.markedSpans, found;
|
|
if (sps) for (var sp, i = 0; i < sps.length; ++i) {
|
|
sp = sps[i];
|
|
if (!sp.marker.collapsed) continue;
|
|
if ((sp.from == null || sp.from < ch) &&
|
|
(sp.to == null || sp.to > ch) &&
|
|
(!found || found.width < sp.marker.width))
|
|
found = sp.marker;
|
|
}
|
|
return found;
|
|
}
|
|
function collapsedSpanAtStart(line) { return collapsedSpanAt(line, -1); }
|
|
function collapsedSpanAtEnd(line) { return collapsedSpanAt(line, line.text.length + 1); }
|
|
|
|
function visualLine(doc, line) {
|
|
var merged;
|
|
while (merged = collapsedSpanAtStart(line))
|
|
line = getLine(doc, merged.find().from.line);
|
|
return line;
|
|
}
|
|
|
|
function lineIsHidden(doc, line) {
|
|
var sps = sawCollapsedSpans && line.markedSpans;
|
|
if (sps) for (var sp, i = 0; i < sps.length; ++i) {
|
|
sp = sps[i];
|
|
if (!sp.marker.collapsed) continue;
|
|
if (sp.from == null) return true;
|
|
if (sp.marker.replacedWith) continue;
|
|
if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
|
|
return true;
|
|
}
|
|
}
|
|
function lineIsHiddenInner(doc, line, span) {
|
|
if (span.to == null) {
|
|
var end = span.marker.find().to, endLine = getLine(doc, end.line);
|
|
return lineIsHiddenInner(doc, endLine, getMarkedSpanFor(endLine.markedSpans, span.marker));
|
|
}
|
|
if (span.marker.inclusiveRight && span.to == line.text.length)
|
|
return true;
|
|
for (var sp, i = 0; i < line.markedSpans.length; ++i) {
|
|
sp = line.markedSpans[i];
|
|
if (sp.marker.collapsed && !sp.marker.replacedWith && sp.from == span.to &&
|
|
(sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
|
|
lineIsHiddenInner(doc, line, sp)) return true;
|
|
}
|
|
}
|
|
|
|
function detachMarkedSpans(line) {
|
|
var spans = line.markedSpans;
|
|
if (!spans) return;
|
|
for (var i = 0; i < spans.length; ++i)
|
|
spans[i].marker.detachLine(line);
|
|
line.markedSpans = null;
|
|
}
|
|
|
|
function attachMarkedSpans(line, spans) {
|
|
if (!spans) return;
|
|
for (var i = 0; i < spans.length; ++i)
|
|
spans[i].marker.attachLine(line);
|
|
line.markedSpans = spans;
|
|
}
|
|
|
|
// LINE WIDGETS
|
|
|
|
var LineWidget = CodeMirror.LineWidget = function(cm, node, options) {
|
|
if (options) for (var opt in options) if (options.hasOwnProperty(opt))
|
|
this[opt] = options[opt];
|
|
this.cm = cm;
|
|
this.node = node;
|
|
};
|
|
eventMixin(LineWidget);
|
|
function widgetOperation(f) {
|
|
return function() {
|
|
var withOp = !this.cm.curOp;
|
|
if (withOp) startOperation(this.cm);
|
|
try {var result = f.apply(this, arguments);}
|
|
finally {if (withOp) endOperation(this.cm);}
|
|
return result;
|
|
};
|
|
}
|
|
LineWidget.prototype.clear = widgetOperation(function() {
|
|
var ws = this.line.widgets, no = lineNo(this.line);
|
|
if (no == null || !ws) return;
|
|
for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1);
|
|
if (!ws.length) this.line.widgets = null;
|
|
var aboveVisible = heightAtLine(this.cm, this.line) < this.cm.doc.scrollTop;
|
|
updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this)));
|
|
if (aboveVisible) addToScrollPos(this.cm, 0, -this.height);
|
|
regChange(this.cm, no, no + 1);
|
|
});
|
|
LineWidget.prototype.changed = widgetOperation(function() {
|
|
var oldH = this.height;
|
|
this.height = null;
|
|
var diff = widgetHeight(this) - oldH;
|
|
if (!diff) return;
|
|
updateLineHeight(this.line, this.line.height + diff);
|
|
var no = lineNo(this.line);
|
|
regChange(this.cm, no, no + 1);
|
|
});
|
|
|
|
function widgetHeight(widget) {
|
|
if (widget.height != null) return widget.height;
|
|
if (!widget.node.parentNode || widget.node.parentNode.nodeType != 1)
|
|
removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative"));
|
|
return widget.height = widget.node.offsetHeight;
|
|
}
|
|
|
|
function addLineWidget(cm, handle, node, options) {
|
|
var widget = new LineWidget(cm, node, options);
|
|
if (widget.noHScroll) cm.display.alignWidgets = true;
|
|
changeLine(cm, handle, function(line) {
|
|
var widgets = line.widgets || (line.widgets = []);
|
|
if (widget.insertAt == null) widgets.push(widget);
|
|
else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget);
|
|
widget.line = line;
|
|
if (!lineIsHidden(cm.doc, line) || widget.showIfHidden) {
|
|
var aboveVisible = heightAtLine(cm, line) < cm.doc.scrollTop;
|
|
updateLineHeight(line, line.height + widgetHeight(widget));
|
|
if (aboveVisible) addToScrollPos(cm, 0, widget.height);
|
|
}
|
|
return true;
|
|
});
|
|
return widget;
|
|
}
|
|
|
|
// LINE DATA STRUCTURE
|
|
|
|
// Line objects. These hold state related to a line, including
|
|
// highlighting info (the styles array).
|
|
var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) {
|
|
this.text = text;
|
|
attachMarkedSpans(this, markedSpans);
|
|
this.height = estimateHeight ? estimateHeight(this) : 1;
|
|
};
|
|
eventMixin(Line);
|
|
|
|
function updateLine(line, text, markedSpans, estimateHeight) {
|
|
line.text = text;
|
|
if (line.stateAfter) line.stateAfter = null;
|
|
if (line.styles) line.styles = null;
|
|
if (line.order != null) line.order = null;
|
|
detachMarkedSpans(line);
|
|
attachMarkedSpans(line, markedSpans);
|
|
var estHeight = estimateHeight ? estimateHeight(line) : 1;
|
|
if (estHeight != line.height) updateLineHeight(line, estHeight);
|
|
}
|
|
|
|
function cleanUpLine(line) {
|
|
line.parent = null;
|
|
detachMarkedSpans(line);
|
|
}
|
|
|
|
// Run the given mode's parser over a line, update the styles
|
|
// array, which contains alternating fragments of text and CSS
|
|
// classes.
|
|
function runMode(cm, text, mode, state, f) {
|
|
var flattenSpans = mode.flattenSpans;
|
|
if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;
|
|
var curStart = 0, curStyle = null;
|
|
var stream = new StringStream(text, cm.options.tabSize), style;
|
|
if (text == "" && mode.blankLine) mode.blankLine(state);
|
|
while (!stream.eol()) {
|
|
if (stream.pos > cm.options.maxHighlightLength) {
|
|
flattenSpans = false;
|
|
stream.pos = text.length;
|
|
style = null;
|
|
} else {
|
|
style = mode.token(stream, state);
|
|
}
|
|
if (!flattenSpans || curStyle != style) {
|
|
if (curStart < stream.start) f(stream.start, curStyle);
|
|
curStart = stream.start; curStyle = style;
|
|
}
|
|
stream.start = stream.pos;
|
|
}
|
|
while (curStart < stream.pos) {
|
|
// Webkit seems to refuse to render text nodes longer than 57444 characters
|
|
var pos = Math.min(stream.pos, curStart + 50000);
|
|
f(pos, curStyle);
|
|
curStart = pos;
|
|
}
|
|
}
|
|
|
|
function highlightLine(cm, line, state) {
|
|
// A styles array always starts with a number identifying the
|
|
// mode/overlays that it is based on (for easy invalidation).
|
|
var st = [cm.state.modeGen];
|
|
// Compute the base array of styles
|
|
runMode(cm, line.text, cm.doc.mode, state, function(end, style) {st.push(end, style);});
|
|
|
|
// Run overlays, adjust style array.
|
|
for (var o = 0; o < cm.state.overlays.length; ++o) {
|
|
var overlay = cm.state.overlays[o], i = 1, at = 0;
|
|
runMode(cm, line.text, overlay.mode, true, function(end, style) {
|
|
var start = i;
|
|
// Ensure there's a token end at the current position, and that i points at it
|
|
while (at < end) {
|
|
var i_end = st[i];
|
|
if (i_end > end)
|
|
st.splice(i, 1, end, st[i+1], i_end);
|
|
i += 2;
|
|
at = Math.min(end, i_end);
|
|
}
|
|
if (!style) return;
|
|
if (overlay.opaque) {
|
|
st.splice(start, i - start, end, style);
|
|
i = start + 2;
|
|
} else {
|
|
for (; start < i; start += 2) {
|
|
var cur = st[start+1];
|
|
st[start+1] = cur ? cur + " " + style : style;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
return st;
|
|
}
|
|
|
|
function getLineStyles(cm, line) {
|
|
if (!line.styles || line.styles[0] != cm.state.modeGen)
|
|
line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
|
|
return line.styles;
|
|
}
|
|
|
|
// Lightweight form of highlight -- proceed over this line and
|
|
// update state, but don't save a style array.
|
|
function processLine(cm, line, state) {
|
|
var mode = cm.doc.mode;
|
|
var stream = new StringStream(line.text, cm.options.tabSize);
|
|
if (line.text == "" && mode.blankLine) mode.blankLine(state);
|
|
while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) {
|
|
mode.token(stream, state);
|
|
stream.start = stream.pos;
|
|
}
|
|
}
|
|
|
|
var styleToClassCache = {};
|
|
function interpretTokenStyle(style, builder) {
|
|
if (!style) return null;
|
|
for (;;) {
|
|
var lineClass = style.match(/(?:^|\s)line-(background-)?(\S+)/);
|
|
if (!lineClass) break;
|
|
style = style.slice(0, lineClass.index) + style.slice(lineClass.index + lineClass[0].length);
|
|
var prop = lineClass[1] ? "bgClass" : "textClass";
|
|
if (builder[prop] == null)
|
|
builder[prop] = lineClass[2];
|
|
else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(builder[prop]))
|
|
builder[prop] += " " + lineClass[2];
|
|
}
|
|
return styleToClassCache[style] ||
|
|
(styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-"));
|
|
}
|
|
|
|
function buildLineContent(cm, realLine, measure, copyWidgets) {
|
|
var merged, line = realLine, empty = true;
|
|
while (merged = collapsedSpanAtStart(line))
|
|
line = getLine(cm.doc, merged.find().from.line);
|
|
|
|
var builder = {pre: elt("pre"), col: 0, pos: 0,
|
|
measure: null, measuredSomething: false, cm: cm,
|
|
copyWidgets: copyWidgets};
|
|
|
|
do {
|
|
if (line.text) empty = false;
|
|
builder.measure = line == realLine && measure;
|
|
builder.pos = 0;
|
|
builder.addToken = builder.measure ? buildTokenMeasure : buildToken;
|
|
if ((ie || webkit) && cm.getOption("lineWrapping"))
|
|
builder.addToken = buildTokenSplitSpaces(builder.addToken);
|
|
var next = insertLineContent(line, builder, getLineStyles(cm, line));
|
|
if (measure && line == realLine && !builder.measuredSomething) {
|
|
measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure));
|
|
builder.measuredSomething = true;
|
|
}
|
|
if (next) line = getLine(cm.doc, next.to.line);
|
|
} while (next);
|
|
|
|
if (measure && !builder.measuredSomething && !measure[0])
|
|
measure[0] = builder.pre.appendChild(empty ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure));
|
|
if (!builder.pre.firstChild && !lineIsHidden(cm.doc, realLine))
|
|
builder.pre.appendChild(document.createTextNode("\u00a0"));
|
|
|
|
var order;
|
|
// Work around problem with the reported dimensions of single-char
|
|
// direction spans on IE (issue #1129). See also the comment in
|
|
// cursorCoords.
|
|
if (measure && ie && (order = getOrder(line))) {
|
|
var l = order.length - 1;
|
|
if (order[l].from == order[l].to) --l;
|
|
var last = order[l], prev = order[l - 1];
|
|
if (last.from + 1 == last.to && prev && last.level < prev.level) {
|
|
var span = measure[builder.pos - 1];
|
|
if (span) span.parentNode.insertBefore(span.measureRight = zeroWidthElement(cm.display.measure),
|
|
span.nextSibling);
|
|
}
|
|
}
|
|
|
|
var textClass = builder.textClass ? builder.textClass + " " + (realLine.textClass || "") : realLine.textClass;
|
|
if (textClass) builder.pre.className = textClass;
|
|
|
|
signal(cm, "renderLine", cm, realLine, builder.pre);
|
|
return builder;
|
|
}
|
|
|
|
var tokenSpecialChars = /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\uFEFF]/g;
|
|
function buildToken(builder, text, style, startStyle, endStyle, title) {
|
|
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;
|
|
var token = elt("span", [content], fullStyle);
|
|
if (title) token.title = title;
|
|
return builder.pre.appendChild(token);
|
|
}
|
|
builder.pre.appendChild(content);
|
|
}
|
|
|
|
function buildTokenMeasure(builder, text, style, startStyle, endStyle) {
|
|
var wrapping = builder.cm.options.lineWrapping;
|
|
for (var i = 0; i < text.length; ++i) {
|
|
var ch = text.charAt(i), start = i == 0;
|
|
if (ch >= "\ud800" && ch < "\udbff" && i < text.length - 1) {
|
|
ch = text.slice(i, i + 2);
|
|
++i;
|
|
} else if (i && wrapping && spanAffectsWrapping(text, i)) {
|
|
builder.pre.appendChild(elt("wbr"));
|
|
}
|
|
var old = builder.measure[builder.pos];
|
|
var span = builder.measure[builder.pos] =
|
|
buildToken(builder, ch, style,
|
|
start && startStyle, i == text.length - 1 && endStyle);
|
|
if (old) span.leftSide = old.leftSide || old;
|
|
// In IE single-space nodes wrap differently than spaces
|
|
// embedded in larger text nodes, except when set to
|
|
// white-space: normal (issue #1268).
|
|
if (ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) &&
|
|
i < text.length - 1 && !/\s/.test(text.charAt(i + 1)))
|
|
span.style.whiteSpace = "normal";
|
|
builder.pos += ch.length;
|
|
}
|
|
if (text.length) builder.measuredSomething = true;
|
|
}
|
|
|
|
function buildTokenSplitSpaces(inner) {
|
|
function split(old) {
|
|
var out = " ";
|
|
for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0";
|
|
out += " ";
|
|
return out;
|
|
}
|
|
return function(builder, text, style, startStyle, endStyle, title) {
|
|
return inner(builder, text.replace(/ {3,}/g, split), style, startStyle, endStyle, title);
|
|
};
|
|
}
|
|
|
|
function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
|
|
var widget = !ignoreWidget && marker.replacedWith;
|
|
if (widget) {
|
|
if (builder.copyWidgets) widget = widget.cloneNode(true);
|
|
builder.pre.appendChild(widget);
|
|
if (builder.measure) {
|
|
if (size) {
|
|
builder.measure[builder.pos] = widget;
|
|
} else {
|
|
var elt = zeroWidthElement(builder.cm.display.measure);
|
|
if (marker.type == "bookmark" && !marker.insertLeft)
|
|
builder.measure[builder.pos] = builder.pre.appendChild(elt);
|
|
else if (builder.measure[builder.pos])
|
|
return;
|
|
else
|
|
builder.measure[builder.pos] = builder.pre.insertBefore(elt, widget);
|
|
}
|
|
builder.measuredSomething = true;
|
|
}
|
|
}
|
|
builder.pos += size;
|
|
}
|
|
|
|
// Outputs a number of spans to make up a line, taking highlighting
|
|
// and marked text into account.
|
|
function insertLineContent(line, builder, styles) {
|
|
var spans = line.markedSpans, allText = line.text, at = 0;
|
|
if (!spans) {
|
|
for (var i = 1; i < styles.length; i+=2)
|
|
builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder));
|
|
return;
|
|
}
|
|
|
|
var len = allText.length, pos = 0, i = 1, text = "", style;
|
|
var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed;
|
|
for (;;) {
|
|
if (nextChange == pos) { // Update current marker set
|
|
spanStyle = spanEndStyle = spanStartStyle = title = "";
|
|
collapsed = null; nextChange = Infinity;
|
|
var foundBookmarks = [];
|
|
for (var j = 0; j < spans.length; ++j) {
|
|
var sp = spans[j], m = sp.marker;
|
|
if (sp.from <= pos && (sp.to == null || sp.to > pos)) {
|
|
if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; }
|
|
if (m.className) spanStyle += " " + m.className;
|
|
if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
|
|
if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
|
|
if (m.title && !title) title = m.title;
|
|
if (m.collapsed && (!collapsed || collapsed.marker.size < m.size))
|
|
collapsed = sp;
|
|
} else if (sp.from > pos && nextChange > sp.from) {
|
|
nextChange = sp.from;
|
|
}
|
|
if (m.type == "bookmark" && sp.from == pos && m.replacedWith) foundBookmarks.push(m);
|
|
}
|
|
if (collapsed && (collapsed.from || 0) == pos) {
|
|
buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos,
|
|
collapsed.marker, collapsed.from == null);
|
|
if (collapsed.to == null) return collapsed.marker.find();
|
|
}
|
|
if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j)
|
|
buildCollapsedSpan(builder, 0, foundBookmarks[j]);
|
|
}
|
|
if (pos >= len) break;
|
|
|
|
var upto = Math.min(len, nextChange);
|
|
while (true) {
|
|
if (text) {
|
|
var end = pos + text.length;
|
|
if (!collapsed) {
|
|
var tokenText = end > upto ? text.slice(0, upto - pos) : text;
|
|
builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
|
|
spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title);
|
|
}
|
|
if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
|
|
pos = end;
|
|
spanStartStyle = "";
|
|
}
|
|
text = allText.slice(at, at = styles[i++]);
|
|
style = interpretTokenStyle(styles[i++], builder);
|
|
}
|
|
}
|
|
}
|
|
|
|
// DOCUMENT DATA STRUCTURE
|
|
|
|
function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) {
|
|
function spansFor(n) {return markedSpans ? markedSpans[n] : null;}
|
|
function update(line, text, spans) {
|
|
updateLine(line, text, spans, estimateHeight);
|
|
signalLater(line, "change", line, change);
|
|
}
|
|
|
|
var from = change.from, to = change.to, text = change.text;
|
|
var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
|
|
var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;
|
|
|
|
// First adjust the line structure
|
|
if (from.ch == 0 && to.ch == 0 && lastText == "") {
|
|
// This is a whole-line replace. Treated specially to make
|
|
// sure line objects move the way they are supposed to.
|
|
for (var i = 0, e = text.length - 1, added = []; i < e; ++i)
|
|
added.push(new Line(text[i], spansFor(i), estimateHeight));
|
|
update(lastLine, lastLine.text, lastSpans);
|
|
if (nlines) doc.remove(from.line, nlines);
|
|
if (added.length) doc.insert(from.line, added);
|
|
} else if (firstLine == lastLine) {
|
|
if (text.length == 1) {
|
|
update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
|
|
} else {
|
|
for (var added = [], i = 1, e = text.length - 1; i < e; ++i)
|
|
added.push(new Line(text[i], spansFor(i), estimateHeight));
|
|
added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
|
|
update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
|
|
doc.insert(from.line + 1, added);
|
|
}
|
|
} else if (text.length == 1) {
|
|
update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
|
|
doc.remove(from.line + 1, nlines);
|
|
} else {
|
|
update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
|
|
update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
|
|
for (var i = 1, e = text.length - 1, added = []; i < e; ++i)
|
|
added.push(new Line(text[i], spansFor(i), estimateHeight));
|
|
if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
|
|
doc.insert(from.line + 1, added);
|
|
}
|
|
|
|
signalLater(doc, "change", doc, change);
|
|
setSelection(doc, selAfter.anchor, selAfter.head, null, true);
|
|
}
|
|
|
|
function LeafChunk(lines) {
|
|
this.lines = lines;
|
|
this.parent = null;
|
|
for (var i = 0, e = lines.length, height = 0; i < e; ++i) {
|
|
lines[i].parent = this;
|
|
height += lines[i].height;
|
|
}
|
|
this.height = height;
|
|
}
|
|
|
|
LeafChunk.prototype = {
|
|
chunkSize: function() { return this.lines.length; },
|
|
removeInner: function(at, n) {
|
|
for (var i = at, e = at + n; i < e; ++i) {
|
|
var line = this.lines[i];
|
|
this.height -= line.height;
|
|
cleanUpLine(line);
|
|
signalLater(line, "delete");
|
|
}
|
|
this.lines.splice(at, n);
|
|
},
|
|
collapse: function(lines) {
|
|
lines.splice.apply(lines, [lines.length, 0].concat(this.lines));
|
|
},
|
|
insertInner: function(at, lines, height) {
|
|
this.height += height;
|
|
this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
|
|
for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this;
|
|
},
|
|
iterN: function(at, n, op) {
|
|
for (var e = at + n; at < e; ++at)
|
|
if (op(this.lines[at])) return true;
|
|
}
|
|
};
|
|
|
|
function BranchChunk(children) {
|
|
this.children = children;
|
|
var size = 0, height = 0;
|
|
for (var i = 0, e = children.length; i < e; ++i) {
|
|
var ch = children[i];
|
|
size += ch.chunkSize(); height += ch.height;
|
|
ch.parent = this;
|
|
}
|
|
this.size = size;
|
|
this.height = height;
|
|
this.parent = null;
|
|
}
|
|
|
|
BranchChunk.prototype = {
|
|
chunkSize: function() { return this.size; },
|
|
removeInner: function(at, n) {
|
|
this.size -= n;
|
|
for (var i = 0; i < this.children.length; ++i) {
|
|
var child = this.children[i], sz = child.chunkSize();
|
|
if (at < sz) {
|
|
var rm = Math.min(n, sz - at), oldHeight = child.height;
|
|
child.removeInner(at, rm);
|
|
this.height -= oldHeight - child.height;
|
|
if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
|
|
if ((n -= rm) == 0) break;
|
|
at = 0;
|
|
} else at -= sz;
|
|
}
|
|
if (this.size - n < 25) {
|
|
var lines = [];
|
|
this.collapse(lines);
|
|
this.children = [new LeafChunk(lines)];
|
|
this.children[0].parent = this;
|
|
}
|
|
},
|
|
collapse: function(lines) {
|
|
for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);
|
|
},
|
|
insertInner: function(at, lines, height) {
|
|
this.size += lines.length;
|
|
this.height += height;
|
|
for (var i = 0, e = this.children.length; i < e; ++i) {
|
|
var child = this.children[i], sz = child.chunkSize();
|
|
if (at <= sz) {
|
|
child.insertInner(at, lines, height);
|
|
if (child.lines && child.lines.length > 50) {
|
|
while (child.lines.length > 50) {
|
|
var spilled = child.lines.splice(child.lines.length - 25, 25);
|
|
var newleaf = new LeafChunk(spilled);
|
|
child.height -= newleaf.height;
|
|
this.children.splice(i + 1, 0, newleaf);
|
|
newleaf.parent = this;
|
|
}
|
|
this.maybeSpill();
|
|
}
|
|
break;
|
|
}
|
|
at -= sz;
|
|
}
|
|
},
|
|
maybeSpill: function() {
|
|
if (this.children.length <= 10) return;
|
|
var me = this;
|
|
do {
|
|
var spilled = me.children.splice(me.children.length - 5, 5);
|
|
var sibling = new BranchChunk(spilled);
|
|
if (!me.parent) { // Become the parent node
|
|
var copy = new BranchChunk(me.children);
|
|
copy.parent = me;
|
|
me.children = [copy, sibling];
|
|
me = copy;
|
|
} else {
|
|
me.size -= sibling.size;
|
|
me.height -= sibling.height;
|
|
var myIndex = indexOf(me.parent.children, me);
|
|
me.parent.children.splice(myIndex + 1, 0, sibling);
|
|
}
|
|
sibling.parent = me.parent;
|
|
} while (me.children.length > 10);
|
|
me.parent.maybeSpill();
|
|
},
|
|
iterN: function(at, n, op) {
|
|
for (var i = 0, e = this.children.length; i < e; ++i) {
|
|
var child = this.children[i], sz = child.chunkSize();
|
|
if (at < sz) {
|
|
var used = Math.min(n, sz - at);
|
|
if (child.iterN(at, used, op)) return true;
|
|
if ((n -= used) == 0) break;
|
|
at = 0;
|
|
} else at -= sz;
|
|
}
|
|
}
|
|
};
|
|
|
|
var nextDocId = 0;
|
|
var Doc = CodeMirror.Doc = function(text, mode, firstLine) {
|
|
if (!(this instanceof Doc)) return new Doc(text, mode, firstLine);
|
|
if (firstLine == null) firstLine = 0;
|
|
|
|
BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
|
|
this.first = firstLine;
|
|
this.scrollTop = this.scrollLeft = 0;
|
|
this.cantEdit = false;
|
|
this.history = makeHistory();
|
|
this.cleanGeneration = 1;
|
|
this.frontier = firstLine;
|
|
var start = Pos(firstLine, 0);
|
|
this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null};
|
|
this.id = ++nextDocId;
|
|
this.modeOption = mode;
|
|
|
|
if (typeof text == "string") text = splitLines(text);
|
|
updateDoc(this, {from: start, to: start, text: text}, null, {head: start, anchor: start});
|
|
};
|
|
|
|
Doc.prototype = createObj(BranchChunk.prototype, {
|
|
constructor: Doc,
|
|
iter: function(from, to, op) {
|
|
if (op) this.iterN(from - this.first, to - from, op);
|
|
else this.iterN(this.first, this.first + this.size, from);
|
|
},
|
|
|
|
insert: function(at, lines) {
|
|
var height = 0;
|
|
for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
|
|
this.insertInner(at - this.first, lines, height);
|
|
},
|
|
remove: function(at, n) { this.removeInner(at - this.first, n); },
|
|
|
|
getValue: function(lineSep) {
|
|
var lines = getLines(this, this.first, this.first + this.size);
|
|
if (lineSep === false) return lines;
|
|
return lines.join(lineSep || "\n");
|
|
},
|
|
setValue: function(code) {
|
|
var top = Pos(this.first, 0), last = this.first + this.size - 1;
|
|
makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
|
|
text: splitLines(code), origin: "setValue"},
|
|
{head: top, anchor: top}, true);
|
|
},
|
|
replaceRange: function(code, from, to, origin) {
|
|
from = clipPos(this, from);
|
|
to = to ? clipPos(this, to) : from;
|
|
replaceRange(this, code, from, to, origin);
|
|
},
|
|
getRange: function(from, to, lineSep) {
|
|
var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
|
|
if (lineSep === false) return lines;
|
|
return lines.join(lineSep || "\n");
|
|
},
|
|
|
|
getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},
|
|
setLine: function(line, text) {
|
|
if (isLine(this, line))
|
|
replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line)));
|
|
},
|
|
removeLine: function(line) {
|
|
if (line) replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line)));
|
|
else replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0)));
|
|
},
|
|
|
|
getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},
|
|
getLineNumber: function(line) {return lineNo(line);},
|
|
|
|
getLineHandleVisualStart: function(line) {
|
|
if (typeof line == "number") line = getLine(this, line);
|
|
return visualLine(this, line);
|
|
},
|
|
|
|
lineCount: function() {return this.size;},
|
|
firstLine: function() {return this.first;},
|
|
lastLine: function() {return this.first + this.size - 1;},
|
|
|
|
clipPos: function(pos) {return clipPos(this, pos);},
|
|
|
|
getCursor: function(start) {
|
|
var sel = this.sel, pos;
|
|
if (start == null || start == "head") pos = sel.head;
|
|
else if (start == "anchor") pos = sel.anchor;
|
|
else if (start == "end" || start === false) pos = sel.to;
|
|
else pos = sel.from;
|
|
return copyPos(pos);
|
|
},
|
|
somethingSelected: function() {return !posEq(this.sel.head, this.sel.anchor);},
|
|
|
|
setCursor: docOperation(function(line, ch, extend) {
|
|
var pos = clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line);
|
|
if (extend) extendSelection(this, pos);
|
|
else setSelection(this, pos, pos);
|
|
}),
|
|
setSelection: docOperation(function(anchor, head, bias) {
|
|
setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), bias);
|
|
}),
|
|
extendSelection: docOperation(function(from, to, bias) {
|
|
extendSelection(this, clipPos(this, from), to && clipPos(this, to), bias);
|
|
}),
|
|
|
|
getSelection: function(lineSep) {return this.getRange(this.sel.from, this.sel.to, lineSep);},
|
|
replaceSelection: function(code, collapse, origin) {
|
|
makeChange(this, {from: this.sel.from, to: this.sel.to, text: splitLines(code), origin: origin}, collapse || "around");
|
|
},
|
|
undo: docOperation(function() {makeChangeFromHistory(this, "undo");}),
|
|
redo: docOperation(function() {makeChangeFromHistory(this, "redo");}),
|
|
|
|
setExtending: function(val) {this.sel.extend = val;},
|
|
|
|
historySize: function() {
|
|
var hist = this.history;
|
|
return {undo: hist.done.length, redo: hist.undone.length};
|
|
},
|
|
clearHistory: function() {this.history = makeHistory(this.history.maxGeneration);},
|
|
|
|
markClean: function() {
|
|
this.cleanGeneration = this.changeGeneration();
|
|
},
|
|
changeGeneration: function() {
|
|
this.history.lastOp = this.history.lastOrigin = null;
|
|
return this.history.generation;
|
|
},
|
|
isClean: function (gen) {
|
|
return this.history.generation == (gen || this.cleanGeneration);
|
|
},
|
|
|
|
getHistory: function() {
|
|
return {done: copyHistoryArray(this.history.done),
|
|
undone: copyHistoryArray(this.history.undone)};
|
|
},
|
|
setHistory: function(histData) {
|
|
var hist = this.history = makeHistory(this.history.maxGeneration);
|
|
hist.done = histData.done.slice(0);
|
|
hist.undone = histData.undone.slice(0);
|
|
},
|
|
|
|
markText: function(from, to, options) {
|
|
return markText(this, clipPos(this, from), clipPos(this, to), options, "range");
|
|
},
|
|
setBookmark: function(pos, options) {
|
|
var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
|
|
insertLeft: options && options.insertLeft};
|
|
pos = clipPos(this, pos);
|
|
return markText(this, pos, pos, realOpts, "bookmark");
|
|
},
|
|
findMarksAt: function(pos) {
|
|
pos = clipPos(this, pos);
|
|
var markers = [], spans = getLine(this, pos.line).markedSpans;
|
|
if (spans) for (var i = 0; i < spans.length; ++i) {
|
|
var span = spans[i];
|
|
if ((span.from == null || span.from <= pos.ch) &&
|
|
(span.to == null || span.to >= pos.ch))
|
|
markers.push(span.marker.parent || span.marker);
|
|
}
|
|
return markers;
|
|
},
|
|
getAllMarks: function() {
|
|
var markers = [];
|
|
this.iter(function(line) {
|
|
var sps = line.markedSpans;
|
|
if (sps) for (var i = 0; i < sps.length; ++i)
|
|
if (sps[i].from != null) markers.push(sps[i].marker);
|
|
});
|
|
return markers;
|
|
},
|
|
|
|
posFromIndex: function(off) {
|
|
var ch, lineNo = this.first;
|
|
this.iter(function(line) {
|
|
var sz = line.text.length + 1;
|
|
if (sz > off) { ch = off; return true; }
|
|
off -= sz;
|
|
++lineNo;
|
|
});
|
|
return clipPos(this, Pos(lineNo, ch));
|
|
},
|
|
indexFromPos: function (coords) {
|
|
coords = clipPos(this, coords);
|
|
var index = coords.ch;
|
|
if (coords.line < this.first || coords.ch < 0) return 0;
|
|
this.iter(this.first, coords.line, function (line) {
|
|
index += line.text.length + 1;
|
|
});
|
|
return index;
|
|
},
|
|
|
|
copy: function(copyHistory) {
|
|
var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first);
|
|
doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
|
|
doc.sel = {from: this.sel.from, to: this.sel.to, head: this.sel.head, anchor: this.sel.anchor,
|
|
shift: this.sel.shift, extend: false, goalColumn: this.sel.goalColumn};
|
|
if (copyHistory) {
|
|
doc.history.undoDepth = this.history.undoDepth;
|
|
doc.setHistory(this.getHistory());
|
|
}
|
|
return doc;
|
|
},
|
|
|
|
linkedDoc: function(options) {
|
|
if (!options) options = {};
|
|
var from = this.first, to = this.first + this.size;
|
|
if (options.from != null && options.from > from) from = options.from;
|
|
if (options.to != null && options.to < to) to = options.to;
|
|
var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from);
|
|
if (options.sharedHist) copy.history = this.history;
|
|
(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
|
|
copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
|
|
return copy;
|
|
},
|
|
unlinkDoc: function(other) {
|
|
if (other instanceof CodeMirror) other = other.doc;
|
|
if (this.linked) for (var i = 0; i < this.linked.length; ++i) {
|
|
var link = this.linked[i];
|
|
if (link.doc != other) continue;
|
|
this.linked.splice(i, 1);
|
|
other.unlinkDoc(this);
|
|
break;
|
|
}
|
|
// If the histories were shared, split them again
|
|
if (other.history == this.history) {
|
|
var splitIds = [other.id];
|
|
linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true);
|
|
other.history = makeHistory();
|
|
other.history.done = copyHistoryArray(this.history.done, splitIds);
|
|
other.history.undone = copyHistoryArray(this.history.undone, splitIds);
|
|
}
|
|
},
|
|
iterLinkedDocs: function(f) {linkedDocs(this, f);},
|
|
|
|
getMode: function() {return this.mode;},
|
|
getEditor: function() {return this.cm;}
|
|
});
|
|
|
|
Doc.prototype.eachLine = Doc.prototype.iter;
|
|
|
|
// The Doc methods that should be available on CodeMirror instances
|
|
var dontDelegate = "iter insert remove copy getEditor".split(" ");
|
|
for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
|
|
CodeMirror.prototype[prop] = (function(method) {
|
|
return function() {return method.apply(this.doc, arguments);};
|
|
})(Doc.prototype[prop]);
|
|
|
|
eventMixin(Doc);
|
|
|
|
function linkedDocs(doc, f, sharedHistOnly) {
|
|
function propagate(doc, skip, sharedHist) {
|
|
if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) {
|
|
var rel = doc.linked[i];
|
|
if (rel.doc == skip) continue;
|
|
var shared = sharedHist && rel.sharedHist;
|
|
if (sharedHistOnly && !shared) continue;
|
|
f(rel.doc, shared);
|
|
propagate(rel.doc, doc, shared);
|
|
}
|
|
}
|
|
propagate(doc, null, true);
|
|
}
|
|
|
|
function attachDoc(cm, doc) {
|
|
if (doc.cm) throw new Error("This document is already in use.");
|
|
cm.doc = doc;
|
|
doc.cm = cm;
|
|
estimateLineHeights(cm);
|
|
loadMode(cm);
|
|
if (!cm.options.lineWrapping) computeMaxLength(cm);
|
|
cm.options.mode = doc.modeOption;
|
|
regChange(cm);
|
|
}
|
|
|
|
// LINE UTILITIES
|
|
|
|
function getLine(chunk, n) {
|
|
n -= chunk.first;
|
|
while (!chunk.lines) {
|
|
for (var i = 0;; ++i) {
|
|
var child = chunk.children[i], sz = child.chunkSize();
|
|
if (n < sz) { chunk = child; break; }
|
|
n -= sz;
|
|
}
|
|
}
|
|
return chunk.lines[n];
|
|
}
|
|
|
|
function getBetween(doc, start, end) {
|
|
var out = [], n = start.line;
|
|
doc.iter(start.line, end.line + 1, function(line) {
|
|
var text = line.text;
|
|
if (n == end.line) text = text.slice(0, end.ch);
|
|
if (n == start.line) text = text.slice(start.ch);
|
|
out.push(text);
|
|
++n;
|
|
});
|
|
return out;
|
|
}
|
|
function getLines(doc, from, to) {
|
|
var out = [];
|
|
doc.iter(from, to, function(line) { out.push(line.text); });
|
|
return out;
|
|
}
|
|
|
|
function updateLineHeight(line, height) {
|
|
var diff = height - line.height;
|
|
for (var n = line; n; n = n.parent) n.height += diff;
|
|
}
|
|
|
|
function lineNo(line) {
|
|
if (line.parent == null) return null;
|
|
var cur = line.parent, no = indexOf(cur.lines, line);
|
|
for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
|
|
for (var i = 0;; ++i) {
|
|
if (chunk.children[i] == cur) break;
|
|
no += chunk.children[i].chunkSize();
|
|
}
|
|
}
|
|
return no + cur.first;
|
|
}
|
|
|
|
function lineAtHeight(chunk, h) {
|
|
var n = chunk.first;
|
|
outer: do {
|
|
for (var i = 0, e = chunk.children.length; i < e; ++i) {
|
|
var child = chunk.children[i], ch = child.height;
|
|
if (h < ch) { chunk = child; continue outer; }
|
|
h -= ch;
|
|
n += child.chunkSize();
|
|
}
|
|
return n;
|
|
} while (!chunk.lines);
|
|
for (var i = 0, e = chunk.lines.length; i < e; ++i) {
|
|
var line = chunk.lines[i], lh = line.height;
|
|
if (h < lh) break;
|
|
h -= lh;
|
|
}
|
|
return n + i;
|
|
}
|
|
|
|
function heightAtLine(cm, lineObj) {
|
|
lineObj = visualLine(cm.doc, lineObj);
|
|
|
|
var h = 0, chunk = lineObj.parent;
|
|
for (var i = 0; i < chunk.lines.length; ++i) {
|
|
var line = chunk.lines[i];
|
|
if (line == lineObj) break;
|
|
else h += line.height;
|
|
}
|
|
for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
|
|
for (var i = 0; i < p.children.length; ++i) {
|
|
var cur = p.children[i];
|
|
if (cur == chunk) break;
|
|
else h += cur.height;
|
|
}
|
|
}
|
|
return h;
|
|
}
|
|
|
|
function getOrder(line) {
|
|
var order = line.order;
|
|
if (order == null) order = line.order = bidiOrdering(line.text);
|
|
return order;
|
|
}
|
|
|
|
// HISTORY
|
|
|
|
function makeHistory(startGen) {
|
|
return {
|
|
// Arrays of history events. Doing something adds an event to
|
|
// done and clears undo. Undoing moves events from done to
|
|
// undone, redoing moves them in the other direction.
|
|
done: [], undone: [], undoDepth: Infinity,
|
|
// Used to track when changes can be merged into a single undo
|
|
// event
|
|
lastTime: 0, lastOp: null, lastOrigin: null,
|
|
// Used by the isClean() method
|
|
generation: startGen || 1, maxGeneration: startGen || 1
|
|
};
|
|
}
|
|
|
|
function attachLocalSpans(doc, change, from, to) {
|
|
var existing = change["spans_" + doc.id], n = 0;
|
|
doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) {
|
|
if (line.markedSpans)
|
|
(existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans;
|
|
++n;
|
|
});
|
|
}
|
|
|
|
function historyChangeFromChange(doc, change) {
|
|
var from = { line: change.from.line, ch: change.from.ch };
|
|
var histChange = {from: from, to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
|
|
attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
|
|
linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true);
|
|
return histChange;
|
|
}
|
|
|
|
function addToHistory(doc, change, selAfter, opId) {
|
|
var hist = doc.history;
|
|
hist.undone.length = 0;
|
|
var time = +new Date, cur = lst(hist.done);
|
|
|
|
if (cur &&
|
|
(hist.lastOp == opId ||
|
|
hist.lastOrigin == change.origin && change.origin &&
|
|
((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) ||
|
|
change.origin.charAt(0) == "*"))) {
|
|
// Merge this change into the last event
|
|
var last = lst(cur.changes);
|
|
if (posEq(change.from, change.to) && posEq(change.from, last.to)) {
|
|
// Optimized case for simple insertion -- don't want to add
|
|
// new changesets for every character typed
|
|
last.to = changeEnd(change);
|
|
} else {
|
|
// Add new sub-event
|
|
cur.changes.push(historyChangeFromChange(doc, change));
|
|
}
|
|
cur.anchorAfter = selAfter.anchor; cur.headAfter = selAfter.head;
|
|
} else {
|
|
// Can not be merged, start a new event.
|
|
cur = {changes: [historyChangeFromChange(doc, change)],
|
|
generation: hist.generation,
|
|
anchorBefore: doc.sel.anchor, headBefore: doc.sel.head,
|
|
anchorAfter: selAfter.anchor, headAfter: selAfter.head};
|
|
hist.done.push(cur);
|
|
hist.generation = ++hist.maxGeneration;
|
|
while (hist.done.length > hist.undoDepth)
|
|
hist.done.shift();
|
|
}
|
|
hist.lastTime = time;
|
|
hist.lastOp = opId;
|
|
hist.lastOrigin = change.origin;
|
|
}
|
|
|
|
function removeClearedSpans(spans) {
|
|
if (!spans) return null;
|
|
for (var i = 0, out; i < spans.length; ++i) {
|
|
if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
|
|
else if (out) out.push(spans[i]);
|
|
}
|
|
return !out ? spans : out.length ? out : null;
|
|
}
|
|
|
|
function getOldSpans(doc, change) {
|
|
var found = change["spans_" + doc.id];
|
|
if (!found) return null;
|
|
for (var i = 0, nw = []; i < change.text.length; ++i)
|
|
nw.push(removeClearedSpans(found[i]));
|
|
return nw;
|
|
}
|
|
|
|
// Used both to provide a JSON-safe object in .getHistory, and, when
|
|
// detaching a document, to split the history in two
|
|
function copyHistoryArray(events, newGroup) {
|
|
for (var i = 0, copy = []; i < events.length; ++i) {
|
|
var event = events[i], changes = event.changes, newChanges = [];
|
|
copy.push({changes: newChanges, anchorBefore: event.anchorBefore, headBefore: event.headBefore,
|
|
anchorAfter: event.anchorAfter, headAfter: event.headAfter});
|
|
for (var j = 0; j < changes.length; ++j) {
|
|
var change = changes[j], m;
|
|
newChanges.push({from: change.from, to: change.to, text: change.text});
|
|
if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) {
|
|
if (indexOf(newGroup, Number(m[1])) > -1) {
|
|
lst(newChanges)[prop] = change[prop];
|
|
delete change[prop];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return copy;
|
|
}
|
|
|
|
// Rebasing/resetting history to deal with externally-sourced changes
|
|
|
|
function rebaseHistSel(pos, from, to, diff) {
|
|
if (to < pos.line) {
|
|
pos.line += diff;
|
|
} else if (from < pos.line) {
|
|
pos.line = from;
|
|
pos.ch = 0;
|
|
}
|
|
}
|
|
|
|
// Tries to rebase an array of history events given a change in the
|
|
// document. If the change touches the same lines as the event, the
|
|
// event, and everything 'behind' it, is discarded. If the change is
|
|
// before the event, the event's positions are updated. Uses a
|
|
// copy-on-write scheme for the positions, to avoid having to
|
|
// reallocate them all on every rebase, but also avoid problems with
|
|
// shared position objects being unsafely updated.
|
|
function rebaseHistArray(array, from, to, diff) {
|
|
for (var i = 0; i < array.length; ++i) {
|
|
var sub = array[i], ok = true;
|
|
for (var j = 0; j < sub.changes.length; ++j) {
|
|
var cur = sub.changes[j];
|
|
if (!sub.copied) { cur.from = copyPos(cur.from); cur.to = copyPos(cur.to); }
|
|
if (to < cur.from.line) {
|
|
cur.from.line += diff;
|
|
cur.to.line += diff;
|
|
} else if (from <= cur.to.line) {
|
|
ok = false;
|
|
break;
|
|
}
|
|
}
|
|
if (!sub.copied) {
|
|
sub.anchorBefore = copyPos(sub.anchorBefore); sub.headBefore = copyPos(sub.headBefore);
|
|
sub.anchorAfter = copyPos(sub.anchorAfter); sub.readAfter = copyPos(sub.headAfter);
|
|
sub.copied = true;
|
|
}
|
|
if (!ok) {
|
|
array.splice(0, i + 1);
|
|
i = 0;
|
|
} else {
|
|
rebaseHistSel(sub.anchorBefore); rebaseHistSel(sub.headBefore);
|
|
rebaseHistSel(sub.anchorAfter); rebaseHistSel(sub.headAfter);
|
|
}
|
|
}
|
|
}
|
|
|
|
function rebaseHist(hist, change) {
|
|
var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
|
|
rebaseHistArray(hist.done, from, to, diff);
|
|
rebaseHistArray(hist.undone, from, to, diff);
|
|
}
|
|
|
|
// EVENT OPERATORS
|
|
|
|
function stopMethod() {e_stop(this);}
|
|
// Ensure an event has a stop method.
|
|
function addStop(event) {
|
|
if (!event.stop) event.stop = stopMethod;
|
|
return event;
|
|
}
|
|
|
|
function e_preventDefault(e) {
|
|
if (e.preventDefault) e.preventDefault();
|
|
else e.returnValue = false;
|
|
}
|
|
function e_stopPropagation(e) {
|
|
if (e.stopPropagation) e.stopPropagation();
|
|
else e.cancelBubble = true;
|
|
}
|
|
function e_defaultPrevented(e) {
|
|
return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false;
|
|
}
|
|
function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
|
|
CodeMirror.e_stop = e_stop;
|
|
CodeMirror.e_preventDefault = e_preventDefault;
|
|
CodeMirror.e_stopPropagation = e_stopPropagation;
|
|
|
|
function e_target(e) {return e.target || e.srcElement;}
|
|
function e_button(e) {
|
|
var b = e.which;
|
|
if (b == null) {
|
|
if (e.button & 1) b = 1;
|
|
else if (e.button & 2) b = 3;
|
|
else if (e.button & 4) b = 2;
|
|
}
|
|
if (mac && e.ctrlKey && b == 1) b = 3;
|
|
return b;
|
|
}
|
|
|
|
// EVENT HANDLING
|
|
|
|
function on(emitter, type, f) {
|
|
if (emitter.addEventListener)
|
|
emitter.addEventListener(type, f, false);
|
|
else if (emitter.attachEvent)
|
|
emitter.attachEvent("on" + type, f);
|
|
else {
|
|
var map = emitter._handlers || (emitter._handlers = {});
|
|
var arr = map[type] || (map[type] = []);
|
|
arr.push(f);
|
|
}
|
|
}
|
|
|
|
function off(emitter, type, f) {
|
|
if (emitter.removeEventListener)
|
|
emitter.removeEventListener(type, f, false);
|
|
else if (emitter.detachEvent)
|
|
emitter.detachEvent("on" + type, f);
|
|
else {
|
|
var arr = emitter._handlers && emitter._handlers[type];
|
|
if (!arr) return;
|
|
for (var i = 0; i < arr.length; ++i)
|
|
if (arr[i] == f) { arr.splice(i, 1); break; }
|
|
}
|
|
}
|
|
|
|
function signal(emitter, type /*, values...*/) {
|
|
var arr = emitter._handlers && emitter._handlers[type];
|
|
if (!arr) return;
|
|
var args = Array.prototype.slice.call(arguments, 2);
|
|
for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);
|
|
}
|
|
|
|
var delayedCallbacks, delayedCallbackDepth = 0;
|
|
function signalLater(emitter, type /*, values...*/) {
|
|
var arr = emitter._handlers && emitter._handlers[type];
|
|
if (!arr) return;
|
|
var args = Array.prototype.slice.call(arguments, 2);
|
|
if (!delayedCallbacks) {
|
|
++delayedCallbackDepth;
|
|
delayedCallbacks = [];
|
|
setTimeout(fireDelayed, 0);
|
|
}
|
|
function bnd(f) {return function(){f.apply(null, args);};};
|
|
for (var i = 0; i < arr.length; ++i)
|
|
delayedCallbacks.push(bnd(arr[i]));
|
|
}
|
|
|
|
function signalDOMEvent(cm, e, override) {
|
|
signal(cm, override || e.type, cm, e);
|
|
return e_defaultPrevented(e) || e.codemirrorIgnore;
|
|
}
|
|
|
|
function fireDelayed() {
|
|
--delayedCallbackDepth;
|
|
var delayed = delayedCallbacks;
|
|
delayedCallbacks = null;
|
|
for (var i = 0; i < delayed.length; ++i) delayed[i]();
|
|
}
|
|
|
|
function hasHandler(emitter, type) {
|
|
var arr = emitter._handlers && emitter._handlers[type];
|
|
return arr && arr.length > 0;
|
|
}
|
|
|
|
CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal;
|
|
|
|
function eventMixin(ctor) {
|
|
ctor.prototype.on = function(type, f) {on(this, type, f);};
|
|
ctor.prototype.off = function(type, f) {off(this, type, f);};
|
|
}
|
|
|
|
// MISC UTILITIES
|
|
|
|
// Number of pixels added to scroller and sizer to hide scrollbar
|
|
var scrollerCutOff = 30;
|
|
|
|
// Returned or thrown by various protocols to signal 'I'm not
|
|
// handling this'.
|
|
var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
|
|
|
|
function Delayed() {this.id = null;}
|
|
Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};
|
|
|
|
// Counts the column offset in a string, taking tabs into account.
|
|
// Used mostly to find indentation.
|
|
function countColumn(string, end, tabSize, startIndex, startValue) {
|
|
if (end == null) {
|
|
end = string.search(/[^\s\u00a0]/);
|
|
if (end == -1) end = string.length;
|
|
}
|
|
for (var i = startIndex || 0, n = startValue || 0; i < end; ++i) {
|
|
if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
|
|
else ++n;
|
|
}
|
|
return n;
|
|
}
|
|
CodeMirror.countColumn = countColumn;
|
|
|
|
var spaceStrs = [""];
|
|
function spaceStr(n) {
|
|
while (spaceStrs.length <= n)
|
|
spaceStrs.push(lst(spaceStrs) + " ");
|
|
return spaceStrs[n];
|
|
}
|
|
|
|
function lst(arr) { return arr[arr.length-1]; }
|
|
|
|
function selectInput(node) {
|
|
if (ios) { // Mobile Safari apparently has a bug where select() is broken.
|
|
node.selectionStart = 0;
|
|
node.selectionEnd = node.value.length;
|
|
} else {
|
|
// Suppress mysterious IE10 errors
|
|
try { node.select(); }
|
|
catch(_e) {}
|
|
}
|
|
}
|
|
|
|
function indexOf(collection, elt) {
|
|
if (collection.indexOf) return collection.indexOf(elt);
|
|
for (var i = 0, e = collection.length; i < e; ++i)
|
|
if (collection[i] == elt) return i;
|
|
return -1;
|
|
}
|
|
|
|
function createObj(base, props) {
|
|
function Obj() {}
|
|
Obj.prototype = base;
|
|
var inst = new Obj();
|
|
if (props) copyObj(props, inst);
|
|
return inst;
|
|
}
|
|
|
|
function copyObj(obj, target) {
|
|
if (!target) target = {};
|
|
for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop];
|
|
return target;
|
|
}
|
|
|
|
function emptyArray(size) {
|
|
for (var a = [], i = 0; i < size; ++i) a.push(undefined);
|
|
return a;
|
|
}
|
|
|
|
function bind(f) {
|
|
var args = Array.prototype.slice.call(arguments, 1);
|
|
return function(){return f.apply(null, args);};
|
|
}
|
|
|
|
var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
|
|
function isWordChar(ch) {
|
|
return /\w/.test(ch) || ch > "\x80" &&
|
|
(ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
|
|
}
|
|
|
|
function isEmpty(obj) {
|
|
for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
|
|
return true;
|
|
}
|
|
|
|
var isExtendingChar = /[\u0300-\u036F\u0483-\u0487\u0488-\u0489\u0591-\u05BD\u05BF\u05C1-\u05C2\u05C4-\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7-\u06E8\u06EA-\u06ED\uA66F\uA670-\uA672\uA674-\uA67D\uA69F\udc00-\udfff]/;
|
|
|
|
// DOM UTILITIES
|
|
|
|
function elt(tag, content, className, style) {
|
|
var e = document.createElement(tag);
|
|
if (className) e.className = className;
|
|
if (style) e.style.cssText = style;
|
|
if (typeof content == "string") setTextContent(e, content);
|
|
else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
|
|
return e;
|
|
}
|
|
|
|
function removeChildren(e) {
|
|
for (var count = e.childNodes.length; count > 0; --count)
|
|
e.removeChild(e.firstChild);
|
|
return e;
|
|
}
|
|
|
|
function removeChildrenAndAdd(parent, e) {
|
|
return removeChildren(parent).appendChild(e);
|
|
}
|
|
|
|
function setTextContent(e, str) {
|
|
if (ie_lt9) {
|
|
e.innerHTML = "";
|
|
e.appendChild(document.createTextNode(str));
|
|
} else e.textContent = str;
|
|
}
|
|
|
|
function getRect(node) {
|
|
return node.getBoundingClientRect();
|
|
}
|
|
CodeMirror.replaceGetRect = function(f) { getRect = f; };
|
|
|
|
// FEATURE DETECTION
|
|
|
|
// Detect drag-and-drop
|
|
var dragAndDrop = function() {
|
|
// There is *some* kind of drag-and-drop support in IE6-8, but I
|
|
// couldn't get it to work yet.
|
|
if (ie_lt9) return false;
|
|
var div = elt('div');
|
|
return "draggable" in div || "dragDrop" in div;
|
|
}();
|
|
|
|
// For a reason I have yet to figure out, some browsers disallow
|
|
// word wrapping between certain characters *only* if a new inline
|
|
// element is started between them. This makes it hard to reliably
|
|
// measure the position of things, since that requires inserting an
|
|
// extra span. This terribly fragile set of tests matches the
|
|
// character combinations that suffer from this phenomenon on the
|
|
// various browsers.
|
|
function spanAffectsWrapping() { return false; }
|
|
if (gecko) // Only for "$'"
|
|
spanAffectsWrapping = function(str, i) {
|
|
return str.charCodeAt(i - 1) == 36 && str.charCodeAt(i) == 39;
|
|
};
|
|
else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent))
|
|
spanAffectsWrapping = function(str, i) {
|
|
return /\-[^ \-?]|\?[^ !\'\"\),.\-\/:;\?\]\}]/.test(str.slice(i - 1, i + 1));
|
|
};
|
|
else if (webkit && /Chrome\/(?:29|[3-9]\d|\d\d\d)\./.test(navigator.userAgent))
|
|
spanAffectsWrapping = function(str, i) {
|
|
var code = str.charCodeAt(i - 1);
|
|
return code >= 8208 && code <= 8212;
|
|
};
|
|
else if (webkit)
|
|
spanAffectsWrapping = function(str, i) {
|
|
if (i > 1 && str.charCodeAt(i - 1) == 45) {
|
|
if (/\w/.test(str.charAt(i - 2)) && /[^\-?\.]/.test(str.charAt(i))) return true;
|
|
if (i > 2 && /[\d\.,]/.test(str.charAt(i - 2)) && /[\d\.,]/.test(str.charAt(i))) return false;
|
|
}
|
|
return /[~!#%&*)=+}\]\\|\"\.>,:;][({[<]|-[^\-?\.\u2010-\u201f\u2026]|\?[\w~`@#$%\^&*(_=+{[|><]|…[\w~`@#$%\^&*(_=+{[><]/.test(str.slice(i - 1, i + 1));
|
|
};
|
|
|
|
var knownScrollbarWidth;
|
|
function scrollbarWidth(measure) {
|
|
if (knownScrollbarWidth != null) return knownScrollbarWidth;
|
|
var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll");
|
|
removeChildrenAndAdd(measure, test);
|
|
if (test.offsetWidth)
|
|
knownScrollbarWidth = test.offsetHeight - test.clientHeight;
|
|
return knownScrollbarWidth || 0;
|
|
}
|
|
|
|
var zwspSupported;
|
|
function zeroWidthElement(measure) {
|
|
if (zwspSupported == null) {
|
|
var test = elt("span", "\u200b");
|
|
removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
|
|
if (measure.firstChild.offsetHeight != 0)
|
|
zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8;
|
|
}
|
|
if (zwspSupported) return elt("span", "\u200b");
|
|
else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
|
|
}
|
|
|
|
// See if "".split is the broken IE version, if so, provide an
|
|
// alternative way to split lines.
|
|
var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
|
|
var pos = 0, result = [], l = string.length;
|
|
while (pos <= l) {
|
|
var nl = string.indexOf("\n", pos);
|
|
if (nl == -1) nl = string.length;
|
|
var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
|
|
var rt = line.indexOf("\r");
|
|
if (rt != -1) {
|
|
result.push(line.slice(0, rt));
|
|
pos += rt + 1;
|
|
} else {
|
|
result.push(line);
|
|
pos = nl + 1;
|
|
}
|
|
}
|
|
return result;
|
|
} : function(string){return string.split(/\r\n?|\n/);};
|
|
CodeMirror.splitLines = splitLines;
|
|
|
|
var hasSelection = window.getSelection ? function(te) {
|
|
try { return te.selectionStart != te.selectionEnd; }
|
|
catch(e) { return false; }
|
|
} : function(te) {
|
|
try {var range = te.ownerDocument.selection.createRange();}
|
|
catch(e) {}
|
|
if (!range || range.parentElement() != te) return false;
|
|
return range.compareEndPoints("StartToEnd", range) != 0;
|
|
};
|
|
|
|
var hasCopyEvent = (function() {
|
|
var e = elt("div");
|
|
if ("oncopy" in e) return true;
|
|
e.setAttribute("oncopy", "return;");
|
|
return typeof e.oncopy == 'function';
|
|
})();
|
|
|
|
// KEY NAMING
|
|
|
|
var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
|
|
19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
|
|
36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
|
|
46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete",
|
|
186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
|
|
221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home",
|
|
63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"};
|
|
CodeMirror.keyNames = keyNames;
|
|
(function() {
|
|
// Number keys
|
|
for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i);
|
|
// Alphabetic keys
|
|
for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
|
|
// Function keys
|
|
for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
|
|
})();
|
|
|
|
// BIDI HELPERS
|
|
|
|
function iterateBidiSections(order, from, to, f) {
|
|
if (!order) return f(from, to, "ltr");
|
|
var found = false;
|
|
for (var i = 0; i < order.length; ++i) {
|
|
var part = order[i];
|
|
if (part.from < to && part.to > from || from == to && part.to == from) {
|
|
f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr");
|
|
found = true;
|
|
}
|
|
}
|
|
if (!found) f(from, to, "ltr");
|
|
}
|
|
|
|
function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }
|
|
function bidiRight(part) { return part.level % 2 ? part.from : part.to; }
|
|
|
|
function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }
|
|
function lineRight(line) {
|
|
var order = getOrder(line);
|
|
if (!order) return line.text.length;
|
|
return bidiRight(lst(order));
|
|
}
|
|
|
|
function lineStart(cm, lineN) {
|
|
var line = getLine(cm.doc, lineN);
|
|
var visual = visualLine(cm.doc, line);
|
|
if (visual != line) lineN = lineNo(visual);
|
|
var order = getOrder(visual);
|
|
var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual);
|
|
return Pos(lineN, ch);
|
|
}
|
|
function lineEnd(cm, lineN) {
|
|
var merged, line;
|
|
while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN)))
|
|
lineN = merged.find().to.line;
|
|
var order = getOrder(line);
|
|
var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
|
|
return Pos(lineN, ch);
|
|
}
|
|
|
|
function compareBidiLevel(order, a, b) {
|
|
var linedir = order[0].level;
|
|
if (a == linedir) return true;
|
|
if (b == linedir) return false;
|
|
return a < b;
|
|
}
|
|
var bidiOther;
|
|
function getBidiPartAt(order, pos) {
|
|
for (var i = 0, found; i < order.length; ++i) {
|
|
var cur = order[i];
|
|
if (cur.from < pos && cur.to > pos) { bidiOther = null; return i; }
|
|
if (cur.from == pos || cur.to == pos) {
|
|
if (found == null) {
|
|
found = i;
|
|
} else if (compareBidiLevel(order, cur.level, order[found].level)) {
|
|
bidiOther = found;
|
|
return i;
|
|
} else {
|
|
bidiOther = i;
|
|
return found;
|
|
}
|
|
}
|
|
}
|
|
bidiOther = null;
|
|
return found;
|
|
}
|
|
|
|
function moveInLine(line, pos, dir, byUnit) {
|
|
if (!byUnit) return pos + dir;
|
|
do pos += dir;
|
|
while (pos > 0 && isExtendingChar.test(line.text.charAt(pos)));
|
|
return pos;
|
|
}
|
|
|
|
// This is somewhat involved. It is needed in order to move
|
|
// 'visually' through bi-directional text -- i.e., pressing left
|
|
// should make the cursor go left, even when in RTL text. The
|
|
// tricky part is the 'jumps', where RTL and LTR text touch each
|
|
// other. This often requires the cursor offset to move more than
|
|
// one unit, in order to visually move one unit.
|
|
function moveVisually(line, start, dir, byUnit) {
|
|
var bidi = getOrder(line);
|
|
if (!bidi) return moveLogically(line, start, dir, byUnit);
|
|
var pos = getBidiPartAt(bidi, start), part = bidi[pos];
|
|
var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit);
|
|
|
|
for (;;) {
|
|
if (target > part.from && target < part.to) return target;
|
|
if (target == part.from || target == part.to) {
|
|
if (getBidiPartAt(bidi, target) == pos) return target;
|
|
part = bidi[pos += dir];
|
|
return (dir > 0) == part.level % 2 ? part.to : part.from;
|
|
} else {
|
|
part = bidi[pos += dir];
|
|
if (!part) return null;
|
|
if ((dir > 0) == part.level % 2)
|
|
target = moveInLine(line, part.to, -1, byUnit);
|
|
else
|
|
target = moveInLine(line, part.from, 1, byUnit);
|
|
}
|
|
}
|
|
}
|
|
|
|
function moveLogically(line, start, dir, byUnit) {
|
|
var target = start + dir;
|
|
if (byUnit) while (target > 0 && isExtendingChar.test(line.text.charAt(target))) target += dir;
|
|
return target < 0 || target > line.text.length ? null : target;
|
|
}
|
|
|
|
// Bidirectional ordering algorithm
|
|
// See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
|
|
// that this (partially) implements.
|
|
|
|
// One-char codes used for character types:
|
|
// L (L): Left-to-Right
|
|
// R (R): Right-to-Left
|
|
// r (AL): Right-to-Left Arabic
|
|
// 1 (EN): European Number
|
|
// + (ES): European Number Separator
|
|
// % (ET): European Number Terminator
|
|
// n (AN): Arabic Number
|
|
// , (CS): Common Number Separator
|
|
// m (NSM): Non-Spacing Mark
|
|
// b (BN): Boundary Neutral
|
|
// s (B): Paragraph Separator
|
|
// t (S): Segment Separator
|
|
// w (WS): Whitespace
|
|
// N (ON): Other Neutrals
|
|
|
|
// Returns null if characters are ordered as they appear
|
|
// (left-to-right), or an array of sections ({from, to, level}
|
|
// objects) in the order in which they occur visually.
|
|
var bidiOrdering = (function() {
|
|
// Character types for codepoints 0 to 0xff
|
|
var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL";
|
|
// Character types for codepoints 0x600 to 0x6ff
|
|
var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr";
|
|
function charType(code) {
|
|
if (code <= 0xff) return lowTypes.charAt(code);
|
|
else if (0x590 <= code && code <= 0x5f4) return "R";
|
|
else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600);
|
|
else if (0x700 <= code && code <= 0x8ac) return "r";
|
|
else return "L";
|
|
}
|
|
|
|
var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
|
|
var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
|
|
// Browsers seem to always treat the boundaries of block elements as being L.
|
|
var outerType = "L";
|
|
|
|
return function(str) {
|
|
if (!bidiRE.test(str)) return false;
|
|
var len = str.length, types = [];
|
|
for (var i = 0, type; i < len; ++i)
|
|
types.push(type = charType(str.charCodeAt(i)));
|
|
|
|
// W1. Examine each non-spacing mark (NSM) in the level run, and
|
|
// change the type of the NSM to the type of the previous
|
|
// character. If the NSM is at the start of the level run, it will
|
|
// get the type of sor.
|
|
for (var i = 0, prev = outerType; i < len; ++i) {
|
|
var type = types[i];
|
|
if (type == "m") types[i] = prev;
|
|
else prev = type;
|
|
}
|
|
|
|
// W2. Search backwards from each instance of a European number
|
|
// until the first strong type (R, L, AL, or sor) is found. If an
|
|
// AL is found, change the type of the European number to Arabic
|
|
// number.
|
|
// W3. Change all ALs to R.
|
|
for (var i = 0, cur = outerType; i < len; ++i) {
|
|
var type = types[i];
|
|
if (type == "1" && cur == "r") types[i] = "n";
|
|
else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
|
|
}
|
|
|
|
// W4. A single European separator between two European numbers
|
|
// changes to a European number. A single common separator between
|
|
// two numbers of the same type changes to that type.
|
|
for (var i = 1, prev = types[0]; i < len - 1; ++i) {
|
|
var type = types[i];
|
|
if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
|
|
else if (type == "," && prev == types[i+1] &&
|
|
(prev == "1" || prev == "n")) types[i] = prev;
|
|
prev = type;
|
|
}
|
|
|
|
// W5. A sequence of European terminators adjacent to European
|
|
// numbers changes to all European numbers.
|
|
// W6. Otherwise, separators and terminators change to Other
|
|
// Neutral.
|
|
for (var i = 0; i < len; ++i) {
|
|
var type = types[i];
|
|
if (type == ",") types[i] = "N";
|
|
else if (type == "%") {
|
|
for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
|
|
var replace = (i && types[i-1] == "!") || (end < len - 1 && types[end] == "1") ? "1" : "N";
|
|
for (var j = i; j < end; ++j) types[j] = replace;
|
|
i = end - 1;
|
|
}
|
|
}
|
|
|
|
// W7. Search backwards from each instance of a European number
|
|
// until the first strong type (R, L, or sor) is found. If an L is
|
|
// found, then change the type of the European number to L.
|
|
for (var i = 0, cur = outerType; i < len; ++i) {
|
|
var type = types[i];
|
|
if (cur == "L" && type == "1") types[i] = "L";
|
|
else if (isStrong.test(type)) cur = type;
|
|
}
|
|
|
|
// N1. A sequence of neutrals takes the direction of the
|
|
// surrounding strong text if the text on both sides has the same
|
|
// direction. European and Arabic numbers act as if they were R in
|
|
// terms of their influence on neutrals. Start-of-level-run (sor)
|
|
// and end-of-level-run (eor) are used at level run boundaries.
|
|
// N2. Any remaining neutrals take the embedding direction.
|
|
for (var i = 0; i < len; ++i) {
|
|
if (isNeutral.test(types[i])) {
|
|
for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
|
|
var before = (i ? types[i-1] : outerType) == "L";
|
|
var after = (end < len - 1 ? types[end] : outerType) == "L";
|
|
var replace = before || after ? "L" : "R";
|
|
for (var j = i; j < end; ++j) types[j] = replace;
|
|
i = end - 1;
|
|
}
|
|
}
|
|
|
|
// Here we depart from the documented algorithm, in order to avoid
|
|
// building up an actual levels array. Since there are only three
|
|
// levels (0, 1, 2) in an implementation that doesn't take
|
|
// explicit embedding into account, we can build up the order on
|
|
// the fly, without following the level-based algorithm.
|
|
var order = [], m;
|
|
for (var i = 0; i < len;) {
|
|
if (countsAsLeft.test(types[i])) {
|
|
var start = i;
|
|
for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
|
|
order.push({from: start, to: i, level: 0});
|
|
} else {
|
|
var pos = i, at = order.length;
|
|
for (++i; i < len && types[i] != "L"; ++i) {}
|
|
for (var j = pos; j < i;) {
|
|
if (countsAsNum.test(types[j])) {
|
|
if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1});
|
|
var nstart = j;
|
|
for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
|
|
order.splice(at, 0, {from: nstart, to: j, level: 2});
|
|
pos = j;
|
|
} else ++j;
|
|
}
|
|
if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1});
|
|
}
|
|
}
|
|
if (order[0].level == 1 && (m = str.match(/^\s+/))) {
|
|
order[0].from = m[0].length;
|
|
order.unshift({from: 0, to: m[0].length, level: 0});
|
|
}
|
|
if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
|
|
lst(order).to -= m[0].length;
|
|
order.push({from: len - m[0].length, to: len, level: 0});
|
|
}
|
|
if (order[0].level != lst(order).level)
|
|
order.push({from: len, to: len, level: order[0].level});
|
|
|
|
return order;
|
|
};
|
|
})();
|
|
|
|
// THE END
|
|
|
|
CodeMirror.version = "3.19.1";
|
|
|
|
return CodeMirror;
|
|
})();
|