8069 lines
314 KiB
JavaScript
8069 lines
314 KiB
JavaScript
// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: http://codemirror.net/LICENSE
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// This is CodeMirror (http://codemirror.net), a code editor
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// implemented in JavaScript on top of the browser's DOM.
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//
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// You can find some technical background for some of the code below
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// at http://marijnhaverbeke.nl/blog/#cm-internals .
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(function(mod) {
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if (typeof exports == "object" && typeof module == "object") // CommonJS
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module.exports = mod();
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else if (typeof define == "function" && define.amd) // AMD
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return define([], mod);
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else // Plain browser env
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this.CodeMirror = mod();
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})(function() {
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"use strict";
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// BROWSER SNIFFING
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// Kludges for bugs and behavior differences that can't be feature
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// detected are enabled based on userAgent etc sniffing.
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var gecko = /gecko\/\d/i.test(navigator.userAgent);
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// ie_uptoN means Internet Explorer version N or lower
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var ie_upto10 = /MSIE \d/.test(navigator.userAgent);
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var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(navigator.userAgent);
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var ie = ie_upto10 || ie_11up;
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var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : ie_11up[1]);
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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 presto = /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_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 presto_version = presto && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
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if (presto_version) presto_version = Number(presto_version[1]);
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if (presto_version && presto_version >= 15) { presto = 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 || presto && (presto_version == null || presto_version < 12.11));
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var captureRightClick = gecko || (ie && ie_version >= 9);
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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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// EDITOR CONSTRUCTOR
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// A CodeMirror instance represents an editor. This is the object
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// that user code is usually dealing with.
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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 ? copyObj(options) : {};
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// Determine effective options based on given values and defaults.
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copyObj(defaults, options, false);
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setGuttersForLineNumbers(options);
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var doc = options.value;
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if (typeof doc == "string") doc = new Doc(doc, options.mode);
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this.doc = doc;
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var display = this.display = new Display(place, doc);
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display.wrapper.CodeMirror = this;
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updateGutters(this);
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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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if (options.autofocus && !mobile) focusInput(this);
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initScrollbars(this);
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this.state = {
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keyMaps: [], // stores maps added by addKeyMap
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overlays: [], // highlighting overlays, as added by addOverlay
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modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info
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overwrite: false, focused: false,
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suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
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pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in readInput
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draggingText: false,
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highlight: new Delayed(), // stores highlight worker timeout
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keySeq: null // Unfinished key sequence
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};
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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 && ie_version < 11) setTimeout(bind(resetInput, this, true), 20);
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registerEventHandlers(this);
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ensureGlobalHandlers();
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startOperation(this);
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this.curOp.forceUpdate = true;
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attachDoc(this, doc);
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if ((options.autofocus && !mobile) || activeElt() == display.input)
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setTimeout(bind(onFocus, this), 20);
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else
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onBlur(this);
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for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt))
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optionHandlers[opt](this, options[opt], Init);
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maybeUpdateLineNumberWidth(this);
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if (options.finishInit) options.finishInit(this);
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for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
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endOperation(this);
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// Suppress optimizelegibility in Webkit, since it breaks text
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// measuring on line wrapping boundaries.
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if (webkit && options.lineWrapping &&
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getComputedStyle(display.lineDiv).textRendering == "optimizelegibility")
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display.lineDiv.style.textRendering = "auto";
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}
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// DISPLAY CONSTRUCTOR
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// The display handles the DOM integration, both for input reading
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// and content drawing. It holds references to DOM nodes and
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// display-related state.
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function Display(place, doc) {
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var d = this;
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// The semihidden textarea that is focused when the editor is
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// focused, and receives input.
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var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none");
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// The textarea is kept positioned near the cursor to prevent the
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// fact that it'll be scrolled into view on input from scrolling
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// our fake cursor out of view. On webkit, when wrap=off, paste is
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// very slow. So make the area wide instead.
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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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// Covers bottom-right square when both scrollbars are present.
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d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
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d.scrollbarFiller.setAttribute("not-content", "true");
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// Covers bottom of gutter when coverGutterNextToScrollbar is on
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// and h scrollbar is present.
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d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
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d.gutterFiller.setAttribute("not-content", "true");
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// Will contain the actual code, positioned to cover the viewport.
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d.lineDiv = elt("div", null, "CodeMirror-code");
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// Elements are added to these to represent selection and cursors.
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d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
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d.cursorDiv = elt("div", null, "CodeMirror-cursors");
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// A visibility: hidden element used to find the size of things.
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d.measure = elt("div", null, "CodeMirror-measure");
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// When lines outside of the viewport are measured, they are drawn in this.
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d.lineMeasure = 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.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
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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 document, allowing scrolling.
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d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
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d.sizerWidth = null;
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// Behavior of elts with overflow: auto and padding is
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// inconsistent across browsers. This is used to ensure the
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// scrollable area is big enough.
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d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "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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// Actual scrollable element.
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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.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
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// Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
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if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
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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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if (place) {
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if (place.appendChild) place.appendChild(d.wrapper);
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else place(d.wrapper);
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}
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// Current rendered range (may be bigger than the view window).
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d.viewFrom = d.viewTo = doc.first;
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d.reportedViewFrom = d.reportedViewTo = doc.first;
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// Information about the rendered lines.
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d.view = [];
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d.renderedView = null;
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// Holds info about a single rendered line when it was rendered
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// for measurement, while not in view.
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d.externalMeasured = null;
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// Empty space (in pixels) above the view
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d.viewOffset = 0;
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d.lastWrapHeight = d.lastWrapWidth = 0;
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d.updateLineNumbers = null;
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d.nativeBarWidth = d.barHeight = d.barWidth = 0;
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d.scrollbarsClipped = false;
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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 line widget is
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// added. As an optimization, line widget aligning is skipped when
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// this is false.
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d.alignWidgets = false;
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// Flag that indicates whether we expect input to appear real soon
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// now (after some event like 'keypress' or 'input') and are
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// polling 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 = d.cachedPaddingH = null;
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// Tracks when resetInput has punted to just putting a short
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// string into the textarea instead of the full 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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// True when shift is held down.
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d.shift = false;
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// Used to track whether anything happened since the context menu
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// was opened.
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d.selForContextMenu = null;
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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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resetModeState(cm);
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}
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function resetModeState(cm) {
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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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addClass(cm.display.wrapper, "CodeMirror-wrap");
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cm.display.sizer.style.minWidth = "";
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cm.display.sizerWidth = null;
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} else {
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rmClass(cm.display.wrapper, "CodeMirror-wrap");
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findMaxLine(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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// Returns a function that estimates the height of a line, to use as
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// first approximation until the line becomes visible (and is thus
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// properly measurable).
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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)) return 0;
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var widgetsHeight = 0;
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if (line.widgets) for (var i = 0; i < line.widgets.length; i++) {
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if (line.widgets[i].height) widgetsHeight += line.widgets[i].height;
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}
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if (wrapping)
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return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th;
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else
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return widgetsHeight + 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 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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// Rebuild the gutter elements, ensure the margin to the left of the
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// code matches their width.
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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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updateGutterSpace(cm);
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}
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function updateGutterSpace(cm) {
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var width = cm.display.gutters.offsetWidth;
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cm.display.sizer.style.marginLeft = width + "px";
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}
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// Compute the character length of a line, taking into account
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// collapsed ranges (see markText) that might hide parts, and join
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// other lines onto it.
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function lineLength(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(0, true);
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cur = 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(0, true);
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len -= cur.text.length - found.from.ch;
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cur = 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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// Find the longest line in the document.
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function findMaxLine(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(d.maxLine);
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d.maxLineChanged = true;
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doc.iter(function(line) {
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var len = lineLength(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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// Prepare DOM reads needed to update the scrollbars. Done in one
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// shot to minimize update/measure roundtrips.
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function measureForScrollbars(cm) {
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var d = cm.display, gutterW = d.gutters.offsetWidth;
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var docH = Math.round(cm.doc.height + paddingVert(cm.display));
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return {
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clientHeight: d.scroller.clientHeight,
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viewHeight: d.wrapper.clientHeight,
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scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,
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viewWidth: d.wrapper.clientWidth,
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barLeft: cm.options.fixedGutter ? gutterW : 0,
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docHeight: docH,
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scrollHeight: docH + scrollGap(cm) + d.barHeight,
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nativeBarWidth: d.nativeBarWidth,
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gutterWidth: gutterW
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};
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}
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function NativeScrollbars(place, scroll, cm) {
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this.cm = cm;
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var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
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var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
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place(vert); place(horiz);
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on(vert, "scroll", function() {
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if (vert.clientHeight) scroll(vert.scrollTop, "vertical");
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});
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on(horiz, "scroll", function() {
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if (horiz.clientWidth) scroll(horiz.scrollLeft, "horizontal");
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});
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this.checkedOverlay = false;
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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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if (ie && ie_version < 8) this.horiz.style.minHeight = this.vert.style.minWidth = "18px";
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}
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NativeScrollbars.prototype = copyObj({
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update: function(measure) {
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var needsH = measure.scrollWidth > measure.clientWidth + 1;
|
|
var needsV = measure.scrollHeight > measure.clientHeight + 1;
|
|
var sWidth = measure.nativeBarWidth;
|
|
|
|
if (needsV) {
|
|
this.vert.style.display = "block";
|
|
this.vert.style.bottom = needsH ? sWidth + "px" : "0";
|
|
var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);
|
|
// A bug in IE8 can cause this value to be negative, so guard it.
|
|
this.vert.firstChild.style.height =
|
|
Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px";
|
|
} else {
|
|
this.vert.style.display = "";
|
|
this.vert.firstChild.style.height = "0";
|
|
}
|
|
|
|
if (needsH) {
|
|
this.horiz.style.display = "block";
|
|
this.horiz.style.right = needsV ? sWidth + "px" : "0";
|
|
this.horiz.style.left = measure.barLeft + "px";
|
|
var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);
|
|
this.horiz.firstChild.style.width =
|
|
(measure.scrollWidth - measure.clientWidth + totalWidth) + "px";
|
|
} else {
|
|
this.horiz.style.display = "";
|
|
this.horiz.firstChild.style.width = "0";
|
|
}
|
|
|
|
if (!this.checkedOverlay && measure.clientHeight > 0) {
|
|
if (sWidth == 0) this.overlayHack();
|
|
this.checkedOverlay = true;
|
|
}
|
|
|
|
return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0};
|
|
},
|
|
setScrollLeft: function(pos) {
|
|
if (this.horiz.scrollLeft != pos) this.horiz.scrollLeft = pos;
|
|
},
|
|
setScrollTop: function(pos) {
|
|
if (this.vert.scrollTop != pos) this.vert.scrollTop = pos;
|
|
},
|
|
overlayHack: function() {
|
|
var w = mac && !mac_geMountainLion ? "12px" : "18px";
|
|
this.horiz.style.minHeight = this.vert.style.minWidth = w;
|
|
var self = this;
|
|
var barMouseDown = function(e) {
|
|
if (e_target(e) != self.vert && e_target(e) != self.horiz)
|
|
operation(self.cm, onMouseDown)(e);
|
|
};
|
|
on(this.vert, "mousedown", barMouseDown);
|
|
on(this.horiz, "mousedown", barMouseDown);
|
|
},
|
|
clear: function() {
|
|
var parent = this.horiz.parentNode;
|
|
parent.removeChild(this.horiz);
|
|
parent.removeChild(this.vert);
|
|
}
|
|
}, NativeScrollbars.prototype);
|
|
|
|
function NullScrollbars() {}
|
|
|
|
NullScrollbars.prototype = copyObj({
|
|
update: function() { return {bottom: 0, right: 0}; },
|
|
setScrollLeft: function() {},
|
|
setScrollTop: function() {},
|
|
clear: function() {}
|
|
}, NullScrollbars.prototype);
|
|
|
|
CodeMirror.scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars};
|
|
|
|
function initScrollbars(cm) {
|
|
if (cm.display.scrollbars) {
|
|
cm.display.scrollbars.clear();
|
|
if (cm.display.scrollbars.addClass)
|
|
rmClass(cm.display.wrapper, cm.display.scrollbars.addClass);
|
|
}
|
|
|
|
cm.display.scrollbars = new CodeMirror.scrollbarModel[cm.options.scrollbarStyle](function(node) {
|
|
cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);
|
|
on(node, "mousedown", function() {
|
|
if (cm.state.focused) setTimeout(bind(focusInput, cm), 0);
|
|
});
|
|
node.setAttribute("not-content", "true");
|
|
}, function(pos, axis) {
|
|
if (axis == "horizontal") setScrollLeft(cm, pos);
|
|
else setScrollTop(cm, pos);
|
|
}, cm);
|
|
if (cm.display.scrollbars.addClass)
|
|
addClass(cm.display.wrapper, cm.display.scrollbars.addClass);
|
|
}
|
|
|
|
function updateScrollbars(cm, measure) {
|
|
if (!measure) measure = measureForScrollbars(cm);
|
|
var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight;
|
|
updateScrollbarsInner(cm, measure);
|
|
for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {
|
|
if (startWidth != cm.display.barWidth && cm.options.lineWrapping)
|
|
updateHeightsInViewport(cm);
|
|
updateScrollbarsInner(cm, measureForScrollbars(cm));
|
|
startWidth = cm.display.barWidth; startHeight = cm.display.barHeight;
|
|
}
|
|
}
|
|
|
|
// Re-synchronize the fake scrollbars with the actual size of the
|
|
// content.
|
|
function updateScrollbarsInner(cm, measure) {
|
|
var d = cm.display;
|
|
var sizes = d.scrollbars.update(measure);
|
|
|
|
d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px";
|
|
d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px";
|
|
|
|
if (sizes.right && sizes.bottom) {
|
|
d.scrollbarFiller.style.display = "block";
|
|
d.scrollbarFiller.style.height = sizes.bottom + "px";
|
|
d.scrollbarFiller.style.width = sizes.right + "px";
|
|
} else d.scrollbarFiller.style.display = "";
|
|
if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
|
|
d.gutterFiller.style.display = "block";
|
|
d.gutterFiller.style.height = sizes.bottom + "px";
|
|
d.gutterFiller.style.width = measure.gutterWidth + "px";
|
|
} else d.gutterFiller.style.display = "";
|
|
}
|
|
|
|
// Compute the lines that are visible in a given viewport (defaults
|
|
// the the current scroll position). viewport may contain top,
|
|
// height, and ensure (see op.scrollToPos) properties.
|
|
function visibleLines(display, doc, viewport) {
|
|
var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;
|
|
top = Math.floor(top - paddingTop(display));
|
|
var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;
|
|
|
|
var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
|
|
// Ensure is a {from: {line, ch}, to: {line, ch}} object, and
|
|
// forces those lines into the viewport (if possible).
|
|
if (viewport && viewport.ensure) {
|
|
var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line;
|
|
if (ensureFrom < from) {
|
|
from = ensureFrom;
|
|
to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);
|
|
} else if (Math.min(ensureTo, doc.lastLine()) >= to) {
|
|
from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);
|
|
to = ensureTo;
|
|
}
|
|
}
|
|
return {from: from, to: Math.max(to, from + 1)};
|
|
}
|
|
|
|
// LINE NUMBERS
|
|
|
|
// Re-align line numbers and gutter marks to compensate for
|
|
// horizontal scrolling.
|
|
function alignHorizontally(cm) {
|
|
var display = cm.display, view = display.view;
|
|
if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return;
|
|
var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
|
|
var gutterW = display.gutters.offsetWidth, left = comp + "px";
|
|
for (var i = 0; i < view.length; i++) if (!view[i].hidden) {
|
|
if (cm.options.fixedGutter && view[i].gutter)
|
|
view[i].gutter.style.left = left;
|
|
var align = view[i].alignable;
|
|
if (align) for (var j = 0; j < align.length; j++)
|
|
align[j].style.left = left;
|
|
}
|
|
if (cm.options.fixedGutter)
|
|
display.gutters.style.left = (comp + gutterW) + "px";
|
|
}
|
|
|
|
// Used to ensure that the line number gutter is still the right
|
|
// size for the current document size. Returns true when an update
|
|
// is needed.
|
|
function maybeUpdateLineNumberWidth(cm) {
|
|
if (!cm.options.lineNumbers) return false;
|
|
var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
|
|
if (last.length != display.lineNumChars) {
|
|
var test = display.measure.appendChild(elt("div", [elt("div", last)],
|
|
"CodeMirror-linenumber CodeMirror-gutter-elt"));
|
|
var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
|
|
display.lineGutter.style.width = "";
|
|
display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding);
|
|
display.lineNumWidth = display.lineNumInnerWidth + padding;
|
|
display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
|
|
display.lineGutter.style.width = display.lineNumWidth + "px";
|
|
updateGutterSpace(cm);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function lineNumberFor(options, i) {
|
|
return String(options.lineNumberFormatter(i + options.firstLineNumber));
|
|
}
|
|
|
|
// Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
|
|
// but using getBoundingClientRect to get a sub-pixel-accurate
|
|
// result.
|
|
function compensateForHScroll(display) {
|
|
return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;
|
|
}
|
|
|
|
// DISPLAY DRAWING
|
|
|
|
function DisplayUpdate(cm, viewport, force) {
|
|
var display = cm.display;
|
|
|
|
this.viewport = viewport;
|
|
// Store some values that we'll need later (but don't want to force a relayout for)
|
|
this.visible = visibleLines(display, cm.doc, viewport);
|
|
this.editorIsHidden = !display.wrapper.offsetWidth;
|
|
this.wrapperHeight = display.wrapper.clientHeight;
|
|
this.wrapperWidth = display.wrapper.clientWidth;
|
|
this.oldDisplayWidth = displayWidth(cm);
|
|
this.force = force;
|
|
this.dims = getDimensions(cm);
|
|
this.events = [];
|
|
}
|
|
|
|
DisplayUpdate.prototype.signal = function(emitter, type) {
|
|
if (hasHandler(emitter, type))
|
|
this.events.push(arguments);
|
|
};
|
|
DisplayUpdate.prototype.finish = function() {
|
|
for (var i = 0; i < this.events.length; i++)
|
|
signal.apply(null, this.events[i]);
|
|
};
|
|
|
|
function maybeClipScrollbars(cm) {
|
|
var display = cm.display;
|
|
if (!display.scrollbarsClipped && display.scroller.offsetWidth) {
|
|
display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;
|
|
display.heightForcer.style.height = scrollGap(cm) + "px";
|
|
display.sizer.style.marginBottom = -display.nativeBarWidth + "px";
|
|
display.sizer.style.borderRightWidth = scrollGap(cm) + "px";
|
|
display.scrollbarsClipped = true;
|
|
}
|
|
}
|
|
|
|
// Does the actual updating of the line display. Bails out
|
|
// (returning false) when there is nothing to be done and forced is
|
|
// false.
|
|
function updateDisplayIfNeeded(cm, update) {
|
|
var display = cm.display, doc = cm.doc;
|
|
|
|
if (update.editorIsHidden) {
|
|
resetView(cm);
|
|
return false;
|
|
}
|
|
|
|
// Bail out if the visible area is already rendered and nothing changed.
|
|
if (!update.force &&
|
|
update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&
|
|
(display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&
|
|
display.renderedView == display.view && countDirtyView(cm) == 0)
|
|
return false;
|
|
|
|
if (maybeUpdateLineNumberWidth(cm)) {
|
|
resetView(cm);
|
|
update.dims = getDimensions(cm);
|
|
}
|
|
|
|
// Compute a suitable new viewport (from & to)
|
|
var end = doc.first + doc.size;
|
|
var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);
|
|
var to = Math.min(end, update.visible.to + cm.options.viewportMargin);
|
|
if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom);
|
|
if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo);
|
|
if (sawCollapsedSpans) {
|
|
from = visualLineNo(cm.doc, from);
|
|
to = visualLineEndNo(cm.doc, to);
|
|
}
|
|
|
|
var different = from != display.viewFrom || to != display.viewTo ||
|
|
display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth;
|
|
adjustView(cm, from, to);
|
|
|
|
display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
|
|
// Position the mover div to align with the current scroll position
|
|
cm.display.mover.style.top = display.viewOffset + "px";
|
|
|
|
var toUpdate = countDirtyView(cm);
|
|
if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&
|
|
(display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))
|
|
return false;
|
|
|
|
// For big changes, we hide the enclosing element during the
|
|
// update, since that speeds up the operations on most browsers.
|
|
var focused = activeElt();
|
|
if (toUpdate > 4) display.lineDiv.style.display = "none";
|
|
patchDisplay(cm, display.updateLineNumbers, update.dims);
|
|
if (toUpdate > 4) display.lineDiv.style.display = "";
|
|
display.renderedView = display.view;
|
|
// There might have been a widget with a focused element that got
|
|
// hidden or updated, if so re-focus it.
|
|
if (focused && activeElt() != focused && focused.offsetHeight) focused.focus();
|
|
|
|
// Prevent selection and cursors from interfering with the scroll
|
|
// width and height.
|
|
removeChildren(display.cursorDiv);
|
|
removeChildren(display.selectionDiv);
|
|
display.gutters.style.height = 0;
|
|
|
|
if (different) {
|
|
display.lastWrapHeight = update.wrapperHeight;
|
|
display.lastWrapWidth = update.wrapperWidth;
|
|
startWorker(cm, 400);
|
|
}
|
|
|
|
display.updateLineNumbers = null;
|
|
|
|
return true;
|
|
}
|
|
|
|
function postUpdateDisplay(cm, update) {
|
|
var force = update.force, viewport = update.viewport;
|
|
for (var first = true;; first = false) {
|
|
if (first && cm.options.lineWrapping && update.oldDisplayWidth != displayWidth(cm)) {
|
|
force = true;
|
|
} else {
|
|
force = false;
|
|
// Clip forced viewport to actual scrollable area.
|
|
if (viewport && viewport.top != null)
|
|
viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)};
|
|
// Updated line heights might result in the drawn area not
|
|
// actually covering the viewport. Keep looping until it does.
|
|
update.visible = visibleLines(cm.display, cm.doc, viewport);
|
|
if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)
|
|
break;
|
|
}
|
|
if (!updateDisplayIfNeeded(cm, update)) break;
|
|
updateHeightsInViewport(cm);
|
|
var barMeasure = measureForScrollbars(cm);
|
|
updateSelection(cm);
|
|
setDocumentHeight(cm, barMeasure);
|
|
updateScrollbars(cm, barMeasure);
|
|
}
|
|
|
|
update.signal(cm, "update", cm);
|
|
if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {
|
|
update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
|
|
cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo;
|
|
}
|
|
}
|
|
|
|
function updateDisplaySimple(cm, viewport) {
|
|
var update = new DisplayUpdate(cm, viewport);
|
|
if (updateDisplayIfNeeded(cm, update)) {
|
|
updateHeightsInViewport(cm);
|
|
postUpdateDisplay(cm, update);
|
|
var barMeasure = measureForScrollbars(cm);
|
|
updateSelection(cm);
|
|
setDocumentHeight(cm, barMeasure);
|
|
updateScrollbars(cm, barMeasure);
|
|
update.finish();
|
|
}
|
|
}
|
|
|
|
function setDocumentHeight(cm, measure) {
|
|
cm.display.sizer.style.minHeight = measure.docHeight + "px";
|
|
var total = measure.docHeight + cm.display.barHeight;
|
|
cm.display.heightForcer.style.top = total + "px";
|
|
cm.display.gutters.style.height = Math.max(total + scrollGap(cm), measure.clientHeight) + "px";
|
|
}
|
|
|
|
// Read the actual heights of the rendered lines, and update their
|
|
// stored heights to match.
|
|
function updateHeightsInViewport(cm) {
|
|
var display = cm.display;
|
|
var prevBottom = display.lineDiv.offsetTop;
|
|
for (var i = 0; i < display.view.length; i++) {
|
|
var cur = display.view[i], height;
|
|
if (cur.hidden) continue;
|
|
if (ie && ie_version < 8) {
|
|
var bot = cur.node.offsetTop + cur.node.offsetHeight;
|
|
height = bot - prevBottom;
|
|
prevBottom = bot;
|
|
} else {
|
|
var box = cur.node.getBoundingClientRect();
|
|
height = box.bottom - box.top;
|
|
}
|
|
var diff = cur.line.height - height;
|
|
if (height < 2) height = textHeight(display);
|
|
if (diff > .001 || diff < -.001) {
|
|
updateLineHeight(cur.line, height);
|
|
updateWidgetHeight(cur.line);
|
|
if (cur.rest) for (var j = 0; j < cur.rest.length; j++)
|
|
updateWidgetHeight(cur.rest[j]);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Read and store the height of line widgets associated with the
|
|
// given line.
|
|
function updateWidgetHeight(line) {
|
|
if (line.widgets) for (var i = 0; i < line.widgets.length; ++i)
|
|
line.widgets[i].height = line.widgets[i].node.offsetHeight;
|
|
}
|
|
|
|
// Do a bulk-read of the DOM positions and sizes needed to draw the
|
|
// view, so that we don't interleave reading and writing to the DOM.
|
|
function getDimensions(cm) {
|
|
var d = cm.display, left = {}, width = {};
|
|
var gutterLeft = d.gutters.clientLeft;
|
|
for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
|
|
left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft;
|
|
width[cm.options.gutters[i]] = n.clientWidth;
|
|
}
|
|
return {fixedPos: compensateForHScroll(d),
|
|
gutterTotalWidth: d.gutters.offsetWidth,
|
|
gutterLeft: left,
|
|
gutterWidth: width,
|
|
wrapperWidth: d.wrapper.clientWidth};
|
|
}
|
|
|
|
// Sync the actual display DOM structure with display.view, removing
|
|
// nodes for lines that are no longer in view, and creating the ones
|
|
// that are not there yet, and updating the ones that are out of
|
|
// date.
|
|
function patchDisplay(cm, updateNumbersFrom, dims) {
|
|
var display = cm.display, lineNumbers = cm.options.lineNumbers;
|
|
var container = display.lineDiv, cur = container.firstChild;
|
|
|
|
function rm(node) {
|
|
var next = node.nextSibling;
|
|
// Works around a throw-scroll bug in OS X Webkit
|
|
if (webkit && mac && cm.display.currentWheelTarget == node)
|
|
node.style.display = "none";
|
|
else
|
|
node.parentNode.removeChild(node);
|
|
return next;
|
|
}
|
|
|
|
var view = display.view, lineN = display.viewFrom;
|
|
// Loop over the elements in the view, syncing cur (the DOM nodes
|
|
// in display.lineDiv) with the view as we go.
|
|
for (var i = 0; i < view.length; i++) {
|
|
var lineView = view[i];
|
|
if (lineView.hidden) {
|
|
} else if (!lineView.node) { // Not drawn yet
|
|
var node = buildLineElement(cm, lineView, lineN, dims);
|
|
container.insertBefore(node, cur);
|
|
} else { // Already drawn
|
|
while (cur != lineView.node) cur = rm(cur);
|
|
var updateNumber = lineNumbers && updateNumbersFrom != null &&
|
|
updateNumbersFrom <= lineN && lineView.lineNumber;
|
|
if (lineView.changes) {
|
|
if (indexOf(lineView.changes, "gutter") > -1) updateNumber = false;
|
|
updateLineForChanges(cm, lineView, lineN, dims);
|
|
}
|
|
if (updateNumber) {
|
|
removeChildren(lineView.lineNumber);
|
|
lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
|
|
}
|
|
cur = lineView.node.nextSibling;
|
|
}
|
|
lineN += lineView.size;
|
|
}
|
|
while (cur) cur = rm(cur);
|
|
}
|
|
|
|
// When an aspect of a line changes, a string is added to
|
|
// lineView.changes. This updates the relevant part of the line's
|
|
// DOM structure.
|
|
function updateLineForChanges(cm, lineView, lineN, dims) {
|
|
for (var j = 0; j < lineView.changes.length; j++) {
|
|
var type = lineView.changes[j];
|
|
if (type == "text") updateLineText(cm, lineView);
|
|
else if (type == "gutter") updateLineGutter(cm, lineView, lineN, dims);
|
|
else if (type == "class") updateLineClasses(lineView);
|
|
else if (type == "widget") updateLineWidgets(lineView, dims);
|
|
}
|
|
lineView.changes = null;
|
|
}
|
|
|
|
// Lines with gutter elements, widgets or a background class need to
|
|
// be wrapped, and have the extra elements added to the wrapper div
|
|
function ensureLineWrapped(lineView) {
|
|
if (lineView.node == lineView.text) {
|
|
lineView.node = elt("div", null, null, "position: relative");
|
|
if (lineView.text.parentNode)
|
|
lineView.text.parentNode.replaceChild(lineView.node, lineView.text);
|
|
lineView.node.appendChild(lineView.text);
|
|
if (ie && ie_version < 8) lineView.node.style.zIndex = 2;
|
|
}
|
|
return lineView.node;
|
|
}
|
|
|
|
function updateLineBackground(lineView) {
|
|
var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass;
|
|
if (cls) cls += " CodeMirror-linebackground";
|
|
if (lineView.background) {
|
|
if (cls) lineView.background.className = cls;
|
|
else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }
|
|
} else if (cls) {
|
|
var wrap = ensureLineWrapped(lineView);
|
|
lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
|
|
}
|
|
}
|
|
|
|
// Wrapper around buildLineContent which will reuse the structure
|
|
// in display.externalMeasured when possible.
|
|
function getLineContent(cm, lineView) {
|
|
var ext = cm.display.externalMeasured;
|
|
if (ext && ext.line == lineView.line) {
|
|
cm.display.externalMeasured = null;
|
|
lineView.measure = ext.measure;
|
|
return ext.built;
|
|
}
|
|
return buildLineContent(cm, lineView);
|
|
}
|
|
|
|
// Redraw the line's text. Interacts with the background and text
|
|
// classes because the mode may output tokens that influence these
|
|
// classes.
|
|
function updateLineText(cm, lineView) {
|
|
var cls = lineView.text.className;
|
|
var built = getLineContent(cm, lineView);
|
|
if (lineView.text == lineView.node) lineView.node = built.pre;
|
|
lineView.text.parentNode.replaceChild(built.pre, lineView.text);
|
|
lineView.text = built.pre;
|
|
if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
|
|
lineView.bgClass = built.bgClass;
|
|
lineView.textClass = built.textClass;
|
|
updateLineClasses(lineView);
|
|
} else if (cls) {
|
|
lineView.text.className = cls;
|
|
}
|
|
}
|
|
|
|
function updateLineClasses(lineView) {
|
|
updateLineBackground(lineView);
|
|
if (lineView.line.wrapClass)
|
|
ensureLineWrapped(lineView).className = lineView.line.wrapClass;
|
|
else if (lineView.node != lineView.text)
|
|
lineView.node.className = "";
|
|
var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass;
|
|
lineView.text.className = textClass || "";
|
|
}
|
|
|
|
function updateLineGutter(cm, lineView, lineN, dims) {
|
|
if (lineView.gutter) {
|
|
lineView.node.removeChild(lineView.gutter);
|
|
lineView.gutter = null;
|
|
}
|
|
var markers = lineView.line.gutterMarkers;
|
|
if (cm.options.lineNumbers || markers) {
|
|
var wrap = ensureLineWrapped(lineView);
|
|
var gutterWrap = lineView.gutter =
|
|
wrap.insertBefore(elt("div", null, "CodeMirror-gutter-wrapper", "left: " +
|
|
(cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) +
|
|
"px; width: " + dims.gutterTotalWidth + "px"),
|
|
lineView.text);
|
|
if (lineView.line.gutterClass)
|
|
gutterWrap.className += " " + lineView.line.gutterClass;
|
|
if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
|
|
lineView.lineNumber = gutterWrap.appendChild(
|
|
elt("div", lineNumberFor(cm.options, lineN),
|
|
"CodeMirror-linenumber CodeMirror-gutter-elt",
|
|
"left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
|
|
+ cm.display.lineNumInnerWidth + "px"));
|
|
if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) {
|
|
var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
|
|
if (found)
|
|
gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
|
|
dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
|
|
}
|
|
}
|
|
}
|
|
|
|
function updateLineWidgets(lineView, dims) {
|
|
if (lineView.alignable) lineView.alignable = null;
|
|
for (var node = lineView.node.firstChild, next; node; node = next) {
|
|
var next = node.nextSibling;
|
|
if (node.className == "CodeMirror-linewidget")
|
|
lineView.node.removeChild(node);
|
|
}
|
|
insertLineWidgets(lineView, dims);
|
|
}
|
|
|
|
// Build a line's DOM representation from scratch
|
|
function buildLineElement(cm, lineView, lineN, dims) {
|
|
var built = getLineContent(cm, lineView);
|
|
lineView.text = lineView.node = built.pre;
|
|
if (built.bgClass) lineView.bgClass = built.bgClass;
|
|
if (built.textClass) lineView.textClass = built.textClass;
|
|
|
|
updateLineClasses(lineView);
|
|
updateLineGutter(cm, lineView, lineN, dims);
|
|
insertLineWidgets(lineView, dims);
|
|
return lineView.node;
|
|
}
|
|
|
|
// A lineView may contain multiple logical lines (when merged by
|
|
// collapsed spans). The widgets for all of them need to be drawn.
|
|
function insertLineWidgets(lineView, dims) {
|
|
insertLineWidgetsFor(lineView.line, lineView, dims, true);
|
|
if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
|
|
insertLineWidgetsFor(lineView.rest[i], lineView, dims, false);
|
|
}
|
|
|
|
function insertLineWidgetsFor(line, lineView, dims, allowAbove) {
|
|
if (!line.widgets) return;
|
|
var wrap = ensureLineWrapped(lineView);
|
|
for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
|
|
var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
|
|
if (!widget.handleMouseEvents) node.setAttribute("cm-ignore-events", "true");
|
|
positionLineWidget(widget, node, lineView, dims);
|
|
if (allowAbove && widget.above)
|
|
wrap.insertBefore(node, lineView.gutter || lineView.text);
|
|
else
|
|
wrap.appendChild(node);
|
|
signalLater(widget, "redraw");
|
|
}
|
|
}
|
|
|
|
function positionLineWidget(widget, node, lineView, dims) {
|
|
if (widget.noHScroll) {
|
|
(lineView.alignable || (lineView.alignable = [])).push(node);
|
|
var width = dims.wrapperWidth;
|
|
node.style.left = dims.fixedPos + "px";
|
|
if (!widget.coverGutter) {
|
|
width -= dims.gutterTotalWidth;
|
|
node.style.paddingLeft = dims.gutterTotalWidth + "px";
|
|
}
|
|
node.style.width = width + "px";
|
|
}
|
|
if (widget.coverGutter) {
|
|
node.style.zIndex = 5;
|
|
node.style.position = "relative";
|
|
if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
|
|
}
|
|
}
|
|
|
|
// POSITION OBJECT
|
|
|
|
// A Pos instance represents a position within the text.
|
|
var Pos = CodeMirror.Pos = function(line, ch) {
|
|
if (!(this instanceof Pos)) return new Pos(line, ch);
|
|
this.line = line; this.ch = ch;
|
|
};
|
|
|
|
// Compare two positions, return 0 if they are the same, a negative
|
|
// number when a is less, and a positive number otherwise.
|
|
var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line || a.ch - b.ch; };
|
|
|
|
function copyPos(x) {return Pos(x.line, x.ch);}
|
|
function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; }
|
|
function minPos(a, b) { return cmp(a, b) < 0 ? a : b; }
|
|
|
|
// SELECTION / CURSOR
|
|
|
|
// Selection objects are immutable. A new one is created every time
|
|
// the selection changes. A selection is one or more non-overlapping
|
|
// (and non-touching) ranges, sorted, and an integer that indicates
|
|
// which one is the primary selection (the one that's scrolled into
|
|
// view, that getCursor returns, etc).
|
|
function Selection(ranges, primIndex) {
|
|
this.ranges = ranges;
|
|
this.primIndex = primIndex;
|
|
}
|
|
|
|
Selection.prototype = {
|
|
primary: function() { return this.ranges[this.primIndex]; },
|
|
equals: function(other) {
|
|
if (other == this) return true;
|
|
if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) return false;
|
|
for (var i = 0; i < this.ranges.length; i++) {
|
|
var here = this.ranges[i], there = other.ranges[i];
|
|
if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) return false;
|
|
}
|
|
return true;
|
|
},
|
|
deepCopy: function() {
|
|
for (var out = [], i = 0; i < this.ranges.length; i++)
|
|
out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head));
|
|
return new Selection(out, this.primIndex);
|
|
},
|
|
somethingSelected: function() {
|
|
for (var i = 0; i < this.ranges.length; i++)
|
|
if (!this.ranges[i].empty()) return true;
|
|
return false;
|
|
},
|
|
contains: function(pos, end) {
|
|
if (!end) end = pos;
|
|
for (var i = 0; i < this.ranges.length; i++) {
|
|
var range = this.ranges[i];
|
|
if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
|
|
return i;
|
|
}
|
|
return -1;
|
|
}
|
|
};
|
|
|
|
function Range(anchor, head) {
|
|
this.anchor = anchor; this.head = head;
|
|
}
|
|
|
|
Range.prototype = {
|
|
from: function() { return minPos(this.anchor, this.head); },
|
|
to: function() { return maxPos(this.anchor, this.head); },
|
|
empty: function() {
|
|
return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch;
|
|
}
|
|
};
|
|
|
|
// Take an unsorted, potentially overlapping set of ranges, and
|
|
// build a selection out of it. 'Consumes' ranges array (modifying
|
|
// it).
|
|
function normalizeSelection(ranges, primIndex) {
|
|
var prim = ranges[primIndex];
|
|
ranges.sort(function(a, b) { return cmp(a.from(), b.from()); });
|
|
primIndex = indexOf(ranges, prim);
|
|
for (var i = 1; i < ranges.length; i++) {
|
|
var cur = ranges[i], prev = ranges[i - 1];
|
|
if (cmp(prev.to(), cur.from()) >= 0) {
|
|
var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
|
|
var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
|
|
if (i <= primIndex) --primIndex;
|
|
ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
|
|
}
|
|
}
|
|
return new Selection(ranges, primIndex);
|
|
}
|
|
|
|
function simpleSelection(anchor, head) {
|
|
return new Selection([new Range(anchor, head || anchor)], 0);
|
|
}
|
|
|
|
// Most of the external API clips given positions to make sure they
|
|
// actually exist within the document.
|
|
function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
|
|
function clipPos(doc, pos) {
|
|
if (pos.line < doc.first) return Pos(doc.first, 0);
|
|
var last = doc.first + doc.size - 1;
|
|
if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
|
|
return clipToLen(pos, getLine(doc, pos.line).text.length);
|
|
}
|
|
function clipToLen(pos, linelen) {
|
|
var ch = pos.ch;
|
|
if (ch == null || ch > linelen) return Pos(pos.line, linelen);
|
|
else if (ch < 0) return Pos(pos.line, 0);
|
|
else return pos;
|
|
}
|
|
function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}
|
|
function clipPosArray(doc, array) {
|
|
for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]);
|
|
return out;
|
|
}
|
|
|
|
// SELECTION UPDATES
|
|
|
|
// The 'scroll' parameter given to many of these indicated whether
|
|
// the new cursor position should be scrolled into view after
|
|
// modifying the selection.
|
|
|
|
// If shift is held or the extend flag is set, extends a range to
|
|
// include a given position (and optionally a second position).
|
|
// Otherwise, simply returns the range between the given positions.
|
|
// Used for cursor motion and such.
|
|
function extendRange(doc, range, head, other) {
|
|
if (doc.cm && doc.cm.display.shift || doc.extend) {
|
|
var anchor = range.anchor;
|
|
if (other) {
|
|
var posBefore = cmp(head, anchor) < 0;
|
|
if (posBefore != (cmp(other, anchor) < 0)) {
|
|
anchor = head;
|
|
head = other;
|
|
} else if (posBefore != (cmp(head, other) < 0)) {
|
|
head = other;
|
|
}
|
|
}
|
|
return new Range(anchor, head);
|
|
} else {
|
|
return new Range(other || head, head);
|
|
}
|
|
}
|
|
|
|
// Extend the primary selection range, discard the rest.
|
|
function extendSelection(doc, head, other, options) {
|
|
setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options);
|
|
}
|
|
|
|
// Extend all selections (pos is an array of selections with length
|
|
// equal the number of selections)
|
|
function extendSelections(doc, heads, options) {
|
|
for (var out = [], i = 0; i < doc.sel.ranges.length; i++)
|
|
out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null);
|
|
var newSel = normalizeSelection(out, doc.sel.primIndex);
|
|
setSelection(doc, newSel, options);
|
|
}
|
|
|
|
// Updates a single range in the selection.
|
|
function replaceOneSelection(doc, i, range, options) {
|
|
var ranges = doc.sel.ranges.slice(0);
|
|
ranges[i] = range;
|
|
setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options);
|
|
}
|
|
|
|
// Reset the selection to a single range.
|
|
function setSimpleSelection(doc, anchor, head, options) {
|
|
setSelection(doc, simpleSelection(anchor, head), options);
|
|
}
|
|
|
|
// Give beforeSelectionChange handlers a change to influence a
|
|
// selection update.
|
|
function filterSelectionChange(doc, sel) {
|
|
var obj = {
|
|
ranges: sel.ranges,
|
|
update: function(ranges) {
|
|
this.ranges = [];
|
|
for (var i = 0; i < ranges.length; i++)
|
|
this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
|
|
clipPos(doc, ranges[i].head));
|
|
}
|
|
};
|
|
signal(doc, "beforeSelectionChange", doc, obj);
|
|
if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
|
|
if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1);
|
|
else return sel;
|
|
}
|
|
|
|
function setSelectionReplaceHistory(doc, sel, options) {
|
|
var done = doc.history.done, last = lst(done);
|
|
if (last && last.ranges) {
|
|
done[done.length - 1] = sel;
|
|
setSelectionNoUndo(doc, sel, options);
|
|
} else {
|
|
setSelection(doc, sel, options);
|
|
}
|
|
}
|
|
|
|
// Set a new selection.
|
|
function setSelection(doc, sel, options) {
|
|
setSelectionNoUndo(doc, sel, options);
|
|
addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
|
|
}
|
|
|
|
function setSelectionNoUndo(doc, sel, options) {
|
|
if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
|
|
sel = filterSelectionChange(doc, sel);
|
|
|
|
var bias = options && options.bias ||
|
|
(cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);
|
|
setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));
|
|
|
|
if (!(options && options.scroll === false) && doc.cm)
|
|
ensureCursorVisible(doc.cm);
|
|
}
|
|
|
|
function setSelectionInner(doc, sel) {
|
|
if (sel.equals(doc.sel)) return;
|
|
|
|
doc.sel = sel;
|
|
|
|
if (doc.cm) {
|
|
doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true;
|
|
signalCursorActivity(doc.cm);
|
|
}
|
|
signalLater(doc, "cursorActivity", doc);
|
|
}
|
|
|
|
// Verify that the selection does not partially select any atomic
|
|
// marked ranges.
|
|
function reCheckSelection(doc) {
|
|
setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll);
|
|
}
|
|
|
|
// Return a selection that does not partially select any atomic
|
|
// ranges.
|
|
function skipAtomicInSelection(doc, sel, bias, mayClear) {
|
|
var out;
|
|
for (var i = 0; i < sel.ranges.length; i++) {
|
|
var range = sel.ranges[i];
|
|
var newAnchor = skipAtomic(doc, range.anchor, bias, mayClear);
|
|
var newHead = skipAtomic(doc, range.head, bias, mayClear);
|
|
if (out || newAnchor != range.anchor || newHead != range.head) {
|
|
if (!out) out = sel.ranges.slice(0, i);
|
|
out[i] = new Range(newAnchor, newHead);
|
|
}
|
|
}
|
|
return out ? normalizeSelection(out, sel.primIndex) : sel;
|
|
}
|
|
|
|
// Ensure a given position is not inside an atomic range.
|
|
function skipAtomic(doc, pos, bias, mayClear) {
|
|
var flipped = false, curPos = pos;
|
|
var dir = bias || 1;
|
|
doc.cantEdit = false;
|
|
search: for (;;) {
|
|
var line = getLine(doc, curPos.line);
|
|
if (line.markedSpans) {
|
|
for (var i = 0; i < line.markedSpans.length; ++i) {
|
|
var sp = line.markedSpans[i], m = sp.marker;
|
|
if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
|
|
(sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
|
|
if (mayClear) {
|
|
signal(m, "beforeCursorEnter");
|
|
if (m.explicitlyCleared) {
|
|
if (!line.markedSpans) break;
|
|
else {--i; continue;}
|
|
}
|
|
}
|
|
if (!m.atomic) continue;
|
|
var newPos = m.find(dir < 0 ? -1 : 1);
|
|
if (cmp(newPos, curPos) == 0) {
|
|
newPos.ch += dir;
|
|
if (newPos.ch < 0) {
|
|
if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1));
|
|
else newPos = null;
|
|
} else if (newPos.ch > line.text.length) {
|
|
if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0);
|
|
else newPos = null;
|
|
}
|
|
if (!newPos) {
|
|
if (flipped) {
|
|
// Driven in a corner -- no valid cursor position found at all
|
|
// -- try again *with* clearing, if we didn't already
|
|
if (!mayClear) return skipAtomic(doc, pos, bias, true);
|
|
// Otherwise, turn off editing until further notice, and return the start of the doc
|
|
doc.cantEdit = true;
|
|
return Pos(doc.first, 0);
|
|
}
|
|
flipped = true; newPos = pos; dir = -dir;
|
|
}
|
|
}
|
|
curPos = newPos;
|
|
continue search;
|
|
}
|
|
}
|
|
}
|
|
return curPos;
|
|
}
|
|
}
|
|
|
|
// SELECTION DRAWING
|
|
|
|
// Redraw the selection and/or cursor
|
|
function drawSelection(cm) {
|
|
var display = cm.display, doc = cm.doc, result = {};
|
|
var curFragment = result.cursors = document.createDocumentFragment();
|
|
var selFragment = result.selection = document.createDocumentFragment();
|
|
|
|
for (var i = 0; i < doc.sel.ranges.length; i++) {
|
|
var range = doc.sel.ranges[i];
|
|
var collapsed = range.empty();
|
|
if (collapsed || cm.options.showCursorWhenSelecting)
|
|
drawSelectionCursor(cm, range, curFragment);
|
|
if (!collapsed)
|
|
drawSelectionRange(cm, range, selFragment);
|
|
}
|
|
|
|
// Move the hidden textarea near the cursor to prevent scrolling artifacts
|
|
if (cm.options.moveInputWithCursor) {
|
|
var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
|
|
var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
|
|
result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
|
|
headPos.top + lineOff.top - wrapOff.top));
|
|
result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
|
|
headPos.left + lineOff.left - wrapOff.left));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
function showSelection(cm, drawn) {
|
|
removeChildrenAndAdd(cm.display.cursorDiv, drawn.cursors);
|
|
removeChildrenAndAdd(cm.display.selectionDiv, drawn.selection);
|
|
if (drawn.teTop != null) {
|
|
cm.display.inputDiv.style.top = drawn.teTop + "px";
|
|
cm.display.inputDiv.style.left = drawn.teLeft + "px";
|
|
}
|
|
}
|
|
|
|
function updateSelection(cm) {
|
|
showSelection(cm, drawSelection(cm));
|
|
}
|
|
|
|
// Draws a cursor for the given range
|
|
function drawSelectionCursor(cm, range, output) {
|
|
var pos = cursorCoords(cm, range.head, "div", null, null, !cm.options.singleCursorHeightPerLine);
|
|
|
|
var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
|
|
cursor.style.left = pos.left + "px";
|
|
cursor.style.top = pos.top + "px";
|
|
cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
|
|
|
|
if (pos.other) {
|
|
// Secondary cursor, shown when on a 'jump' in bi-directional text
|
|
var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
|
|
otherCursor.style.display = "";
|
|
otherCursor.style.left = pos.other.left + "px";
|
|
otherCursor.style.top = pos.other.top + "px";
|
|
otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
|
|
}
|
|
}
|
|
|
|
// Draws the given range as a highlighted selection
|
|
function drawSelectionRange(cm, range, output) {
|
|
var display = cm.display, doc = cm.doc;
|
|
var fragment = document.createDocumentFragment();
|
|
var padding = paddingH(cm.display), leftSide = padding.left;
|
|
var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;
|
|
|
|
function add(left, top, width, bottom) {
|
|
if (top < 0) top = 0;
|
|
top = Math.round(top);
|
|
bottom = Math.round(bottom);
|
|
fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
|
|
"px; top: " + top + "px; width: " + (width == null ? rightSide - left : width) +
|
|
"px; height: " + (bottom - top) + "px"));
|
|
}
|
|
|
|
function drawForLine(line, fromArg, toArg) {
|
|
var lineObj = getLine(doc, line);
|
|
var lineLen = lineObj.text.length;
|
|
var start, end;
|
|
function coords(ch, bias) {
|
|
return charCoords(cm, Pos(line, ch), "div", lineObj, bias);
|
|
}
|
|
|
|
iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
|
|
var leftPos = coords(from, "left"), rightPos, left, right;
|
|
if (from == to) {
|
|
rightPos = leftPos;
|
|
left = right = leftPos.left;
|
|
} else {
|
|
rightPos = coords(to - 1, "right");
|
|
if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }
|
|
left = leftPos.left;
|
|
right = rightPos.right;
|
|
}
|
|
if (fromArg == null && from == 0) left = leftSide;
|
|
if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
|
|
add(left, leftPos.top, null, leftPos.bottom);
|
|
left = leftSide;
|
|
if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
|
|
}
|
|
if (toArg == null && to == lineLen) right = rightSide;
|
|
if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
|
|
start = leftPos;
|
|
if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
|
|
end = rightPos;
|
|
if (left < leftSide + 1) left = leftSide;
|
|
add(left, rightPos.top, right - left, rightPos.bottom);
|
|
});
|
|
return {start: start, end: end};
|
|
}
|
|
|
|
var sFrom = range.from(), sTo = range.to();
|
|
if (sFrom.line == sTo.line) {
|
|
drawForLine(sFrom.line, sFrom.ch, sTo.ch);
|
|
} else {
|
|
var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);
|
|
var singleVLine = visualLine(fromLine) == visualLine(toLine);
|
|
var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
|
|
var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
|
|
if (singleVLine) {
|
|
if (leftEnd.top < rightStart.top - 2) {
|
|
add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
|
|
add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
|
|
} else {
|
|
add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
|
|
}
|
|
}
|
|
if (leftEnd.bottom < rightStart.top)
|
|
add(leftSide, leftEnd.bottom, null, rightStart.top);
|
|
}
|
|
|
|
output.appendChild(fragment);
|
|
}
|
|
|
|
// Cursor-blinking
|
|
function restartBlink(cm) {
|
|
if (!cm.state.focused) return;
|
|
var display = cm.display;
|
|
clearInterval(display.blinker);
|
|
var on = true;
|
|
display.cursorDiv.style.visibility = "";
|
|
if (cm.options.cursorBlinkRate > 0)
|
|
display.blinker = setInterval(function() {
|
|
display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden";
|
|
}, cm.options.cursorBlinkRate);
|
|
else if (cm.options.cursorBlinkRate < 0)
|
|
display.cursorDiv.style.visibility = "hidden";
|
|
}
|
|
|
|
// HIGHLIGHT WORKER
|
|
|
|
function startWorker(cm, time) {
|
|
if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)
|
|
cm.state.highlight.set(time, bind(highlightWorker, cm));
|
|
}
|
|
|
|
function highlightWorker(cm) {
|
|
var doc = cm.doc;
|
|
if (doc.frontier < doc.first) doc.frontier = doc.first;
|
|
if (doc.frontier >= cm.display.viewTo) return;
|
|
var end = +new Date + cm.options.workTime;
|
|
var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
|
|
var changedLines = [];
|
|
|
|
doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) {
|
|
if (doc.frontier >= cm.display.viewFrom) { // Visible
|
|
var oldStyles = line.styles;
|
|
var highlighted = highlightLine(cm, line, state, true);
|
|
line.styles = highlighted.styles;
|
|
var oldCls = line.styleClasses, newCls = highlighted.classes;
|
|
if (newCls) line.styleClasses = newCls;
|
|
else if (oldCls) line.styleClasses = null;
|
|
var ischange = !oldStyles || oldStyles.length != line.styles.length ||
|
|
oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);
|
|
for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
|
|
if (ischange) changedLines.push(doc.frontier);
|
|
line.stateAfter = copyState(doc.mode, state);
|
|
} else {
|
|
processLine(cm, line.text, state);
|
|
line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;
|
|
}
|
|
++doc.frontier;
|
|
if (+new Date > end) {
|
|
startWorker(cm, cm.options.workDelay);
|
|
return true;
|
|
}
|
|
});
|
|
if (changedLines.length) runInOp(cm, function() {
|
|
for (var i = 0; i < changedLines.length; i++)
|
|
regLineChange(cm, changedLines[i], "text");
|
|
});
|
|
}
|
|
|
|
// Finds the line to start with when starting a parse. Tries to
|
|
// find a line with a stateAfter, so that it can start with a
|
|
// valid state. If that fails, it returns the line with the
|
|
// smallest indentation, which tends to need the least context to
|
|
// parse correctly.
|
|
function findStartLine(cm, n, precise) {
|
|
var minindent, minline, doc = cm.doc;
|
|
var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
|
|
for (var search = n; search > lim; --search) {
|
|
if (search <= doc.first) return doc.first;
|
|
var line = getLine(doc, search - 1);
|
|
if (line.stateAfter && (!precise || search <= doc.frontier)) return search;
|
|
var indented = countColumn(line.text, null, cm.options.tabSize);
|
|
if (minline == null || minindent > indented) {
|
|
minline = search - 1;
|
|
minindent = indented;
|
|
}
|
|
}
|
|
return minline;
|
|
}
|
|
|
|
function getStateBefore(cm, n, precise) {
|
|
var doc = cm.doc, display = cm.display;
|
|
if (!doc.mode.startState) return true;
|
|
var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter;
|
|
if (!state) state = startState(doc.mode);
|
|
else state = copyState(doc.mode, state);
|
|
doc.iter(pos, n, function(line) {
|
|
processLine(cm, line.text, state);
|
|
var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo;
|
|
line.stateAfter = save ? copyState(doc.mode, state) : null;
|
|
++pos;
|
|
});
|
|
if (precise) doc.frontier = pos;
|
|
return state;
|
|
}
|
|
|
|
// POSITION MEASUREMENT
|
|
|
|
function paddingTop(display) {return display.lineSpace.offsetTop;}
|
|
function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
|
|
function paddingH(display) {
|
|
if (display.cachedPaddingH) return display.cachedPaddingH;
|
|
var e = removeChildrenAndAdd(display.measure, elt("pre", "x"));
|
|
var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
|
|
var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};
|
|
if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data;
|
|
return data;
|
|
}
|
|
|
|
function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth; }
|
|
function displayWidth(cm) {
|
|
return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth;
|
|
}
|
|
function displayHeight(cm) {
|
|
return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight;
|
|
}
|
|
|
|
// Ensure the lineView.wrapping.heights array is populated. This is
|
|
// an array of bottom offsets for the lines that make up a drawn
|
|
// line. When lineWrapping is on, there might be more than one
|
|
// height.
|
|
function ensureLineHeights(cm, lineView, rect) {
|
|
var wrapping = cm.options.lineWrapping;
|
|
var curWidth = wrapping && displayWidth(cm);
|
|
if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
|
|
var heights = lineView.measure.heights = [];
|
|
if (wrapping) {
|
|
lineView.measure.width = curWidth;
|
|
var rects = lineView.text.firstChild.getClientRects();
|
|
for (var i = 0; i < rects.length - 1; i++) {
|
|
var cur = rects[i], next = rects[i + 1];
|
|
if (Math.abs(cur.bottom - next.bottom) > 2)
|
|
heights.push((cur.bottom + next.top) / 2 - rect.top);
|
|
}
|
|
}
|
|
heights.push(rect.bottom - rect.top);
|
|
}
|
|
}
|
|
|
|
// Find a line map (mapping character offsets to text nodes) and a
|
|
// measurement cache for the given line number. (A line view might
|
|
// contain multiple lines when collapsed ranges are present.)
|
|
function mapFromLineView(lineView, line, lineN) {
|
|
if (lineView.line == line)
|
|
return {map: lineView.measure.map, cache: lineView.measure.cache};
|
|
for (var i = 0; i < lineView.rest.length; i++)
|
|
if (lineView.rest[i] == line)
|
|
return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]};
|
|
for (var i = 0; i < lineView.rest.length; i++)
|
|
if (lineNo(lineView.rest[i]) > lineN)
|
|
return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true};
|
|
}
|
|
|
|
// Render a line into the hidden node display.externalMeasured. Used
|
|
// when measurement is needed for a line that's not in the viewport.
|
|
function updateExternalMeasurement(cm, line) {
|
|
line = visualLine(line);
|
|
var lineN = lineNo(line);
|
|
var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
|
|
view.lineN = lineN;
|
|
var built = view.built = buildLineContent(cm, view);
|
|
view.text = built.pre;
|
|
removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
|
|
return view;
|
|
}
|
|
|
|
// Get a {top, bottom, left, right} box (in line-local coordinates)
|
|
// for a given character.
|
|
function measureChar(cm, line, ch, bias) {
|
|
return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias);
|
|
}
|
|
|
|
// Find a line view that corresponds to the given line number.
|
|
function findViewForLine(cm, lineN) {
|
|
if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
|
|
return cm.display.view[findViewIndex(cm, lineN)];
|
|
var ext = cm.display.externalMeasured;
|
|
if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
|
|
return ext;
|
|
}
|
|
|
|
// Measurement can be split in two steps, the set-up work that
|
|
// applies to the whole line, and the measurement of the actual
|
|
// character. Functions like coordsChar, that need to do a lot of
|
|
// measurements in a row, can thus ensure that the set-up work is
|
|
// only done once.
|
|
function prepareMeasureForLine(cm, line) {
|
|
var lineN = lineNo(line);
|
|
var view = findViewForLine(cm, lineN);
|
|
if (view && !view.text)
|
|
view = null;
|
|
else if (view && view.changes)
|
|
updateLineForChanges(cm, view, lineN, getDimensions(cm));
|
|
if (!view)
|
|
view = updateExternalMeasurement(cm, line);
|
|
|
|
var info = mapFromLineView(view, line, lineN);
|
|
return {
|
|
line: line, view: view, rect: null,
|
|
map: info.map, cache: info.cache, before: info.before,
|
|
hasHeights: false
|
|
};
|
|
}
|
|
|
|
// Given a prepared measurement object, measures the position of an
|
|
// actual character (or fetches it from the cache).
|
|
function measureCharPrepared(cm, prepared, ch, bias, varHeight) {
|
|
if (prepared.before) ch = -1;
|
|
var key = ch + (bias || ""), found;
|
|
if (prepared.cache.hasOwnProperty(key)) {
|
|
found = prepared.cache[key];
|
|
} else {
|
|
if (!prepared.rect)
|
|
prepared.rect = prepared.view.text.getBoundingClientRect();
|
|
if (!prepared.hasHeights) {
|
|
ensureLineHeights(cm, prepared.view, prepared.rect);
|
|
prepared.hasHeights = true;
|
|
}
|
|
found = measureCharInner(cm, prepared, ch, bias);
|
|
if (!found.bogus) prepared.cache[key] = found;
|
|
}
|
|
return {left: found.left, right: found.right,
|
|
top: varHeight ? found.rtop : found.top,
|
|
bottom: varHeight ? found.rbottom : found.bottom};
|
|
}
|
|
|
|
var nullRect = {left: 0, right: 0, top: 0, bottom: 0};
|
|
|
|
function measureCharInner(cm, prepared, ch, bias) {
|
|
var map = prepared.map;
|
|
|
|
var node, start, end, collapse;
|
|
// First, search the line map for the text node corresponding to,
|
|
// or closest to, the target character.
|
|
for (var i = 0; i < map.length; i += 3) {
|
|
var mStart = map[i], mEnd = map[i + 1];
|
|
if (ch < mStart) {
|
|
start = 0; end = 1;
|
|
collapse = "left";
|
|
} else if (ch < mEnd) {
|
|
start = ch - mStart;
|
|
end = start + 1;
|
|
} else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
|
|
end = mEnd - mStart;
|
|
start = end - 1;
|
|
if (ch >= mEnd) collapse = "right";
|
|
}
|
|
if (start != null) {
|
|
node = map[i + 2];
|
|
if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
|
|
collapse = bias;
|
|
if (bias == "left" && start == 0)
|
|
while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
|
|
node = map[(i -= 3) + 2];
|
|
collapse = "left";
|
|
}
|
|
if (bias == "right" && start == mEnd - mStart)
|
|
while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
|
|
node = map[(i += 3) + 2];
|
|
collapse = "right";
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
var rect;
|
|
if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
|
|
for (var i = 0; i < 4; i++) { // Retry a maximum of 4 times when nonsense rectangles are returned
|
|
while (start && isExtendingChar(prepared.line.text.charAt(mStart + start))) --start;
|
|
while (mStart + end < mEnd && isExtendingChar(prepared.line.text.charAt(mStart + end))) ++end;
|
|
if (ie && ie_version < 9 && start == 0 && end == mEnd - mStart) {
|
|
rect = node.parentNode.getBoundingClientRect();
|
|
} else if (ie && cm.options.lineWrapping) {
|
|
var rects = range(node, start, end).getClientRects();
|
|
if (rects.length)
|
|
rect = rects[bias == "right" ? rects.length - 1 : 0];
|
|
else
|
|
rect = nullRect;
|
|
} else {
|
|
rect = range(node, start, end).getBoundingClientRect() || nullRect;
|
|
}
|
|
if (rect.left || rect.right || start == 0) break;
|
|
end = start;
|
|
start = start - 1;
|
|
collapse = "right";
|
|
}
|
|
if (ie && ie_version < 11) rect = maybeUpdateRectForZooming(cm.display.measure, rect);
|
|
} else { // If it is a widget, simply get the box for the whole widget.
|
|
if (start > 0) collapse = bias = "right";
|
|
var rects;
|
|
if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
|
|
rect = rects[bias == "right" ? rects.length - 1 : 0];
|
|
else
|
|
rect = node.getBoundingClientRect();
|
|
}
|
|
if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {
|
|
var rSpan = node.parentNode.getClientRects()[0];
|
|
if (rSpan)
|
|
rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom};
|
|
else
|
|
rect = nullRect;
|
|
}
|
|
|
|
var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top;
|
|
var mid = (rtop + rbot) / 2;
|
|
var heights = prepared.view.measure.heights;
|
|
for (var i = 0; i < heights.length - 1; i++)
|
|
if (mid < heights[i]) break;
|
|
var top = i ? heights[i - 1] : 0, bot = heights[i];
|
|
var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
|
|
right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
|
|
top: top, bottom: bot};
|
|
if (!rect.left && !rect.right) result.bogus = true;
|
|
if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }
|
|
|
|
return result;
|
|
}
|
|
|
|
// Work around problem with bounding client rects on ranges being
|
|
// returned incorrectly when zoomed on IE10 and below.
|
|
function maybeUpdateRectForZooming(measure, rect) {
|
|
if (!window.screen || screen.logicalXDPI == null ||
|
|
screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))
|
|
return rect;
|
|
var scaleX = screen.logicalXDPI / screen.deviceXDPI;
|
|
var scaleY = screen.logicalYDPI / screen.deviceYDPI;
|
|
return {left: rect.left * scaleX, right: rect.right * scaleX,
|
|
top: rect.top * scaleY, bottom: rect.bottom * scaleY};
|
|
}
|
|
|
|
function clearLineMeasurementCacheFor(lineView) {
|
|
if (lineView.measure) {
|
|
lineView.measure.cache = {};
|
|
lineView.measure.heights = null;
|
|
if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
|
|
lineView.measure.caches[i] = {};
|
|
}
|
|
}
|
|
|
|
function clearLineMeasurementCache(cm) {
|
|
cm.display.externalMeasure = null;
|
|
removeChildren(cm.display.lineMeasure);
|
|
for (var i = 0; i < cm.display.view.length; i++)
|
|
clearLineMeasurementCacheFor(cm.display.view[i]);
|
|
}
|
|
|
|
function clearCaches(cm) {
|
|
clearLineMeasurementCache(cm);
|
|
cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
|
|
if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;
|
|
cm.display.lineNumChars = null;
|
|
}
|
|
|
|
function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; }
|
|
function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; }
|
|
|
|
// Converts a {top, bottom, left, right} box from line-local
|
|
// coordinates into another coordinate system. Context may be one of
|
|
// "line", "div" (display.lineDiv), "local"/null (editor), "window",
|
|
// or "page".
|
|
function intoCoordSystem(cm, lineObj, rect, context) {
|
|
if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
|
|
var size = widgetHeight(lineObj.widgets[i]);
|
|
rect.top += size; rect.bottom += size;
|
|
}
|
|
if (context == "line") return rect;
|
|
if (!context) context = "local";
|
|
var yOff = heightAtLine(lineObj);
|
|
if (context == "local") yOff += paddingTop(cm.display);
|
|
else yOff -= cm.display.viewOffset;
|
|
if (context == "page" || context == "window") {
|
|
var lOff = cm.display.lineSpace.getBoundingClientRect();
|
|
yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
|
|
var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
|
|
rect.left += xOff; rect.right += xOff;
|
|
}
|
|
rect.top += yOff; rect.bottom += yOff;
|
|
return rect;
|
|
}
|
|
|
|
// Coverts a box from "div" coords to another coordinate system.
|
|
// Context may be "window", "page", "div", or "local"/null.
|
|
function fromCoordSystem(cm, coords, context) {
|
|
if (context == "div") return coords;
|
|
var left = coords.left, top = coords.top;
|
|
// First move into "page" coordinate system
|
|
if (context == "page") {
|
|
left -= pageScrollX();
|
|
top -= pageScrollY();
|
|
} else if (context == "local" || !context) {
|
|
var localBox = cm.display.sizer.getBoundingClientRect();
|
|
left += localBox.left;
|
|
top += localBox.top;
|
|
}
|
|
|
|
var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
|
|
return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};
|
|
}
|
|
|
|
function charCoords(cm, pos, context, lineObj, bias) {
|
|
if (!lineObj) lineObj = getLine(cm.doc, pos.line);
|
|
return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context);
|
|
}
|
|
|
|
// Returns a box for a given cursor position, which may have an
|
|
// 'other' property containing the position of the secondary cursor
|
|
// on a bidi boundary.
|
|
function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {
|
|
lineObj = lineObj || getLine(cm.doc, pos.line);
|
|
if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj);
|
|
function get(ch, right) {
|
|
var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight);
|
|
if (right) m.left = m.right; else m.right = m.left;
|
|
return intoCoordSystem(cm, lineObj, m, context);
|
|
}
|
|
function getBidi(ch, partPos) {
|
|
var part = order[partPos], right = part.level % 2;
|
|
if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
|
|
part = order[--partPos];
|
|
ch = bidiRight(part) - (part.level % 2 ? 0 : 1);
|
|
right = true;
|
|
} else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
|
|
part = order[++partPos];
|
|
ch = bidiLeft(part) - part.level % 2;
|
|
right = false;
|
|
}
|
|
if (right && ch == part.to && ch > part.from) return get(ch - 1);
|
|
return get(ch, right);
|
|
}
|
|
var order = getOrder(lineObj), ch = pos.ch;
|
|
if (!order) return get(ch);
|
|
var partPos = getBidiPartAt(order, ch);
|
|
var val = getBidi(ch, partPos);
|
|
if (bidiOther != null) val.other = getBidi(ch, bidiOther);
|
|
return val;
|
|
}
|
|
|
|
// Used to cheaply estimate the coordinates for a position. Used for
|
|
// intermediate scroll updates.
|
|
function estimateCoords(cm, pos) {
|
|
var left = 0, pos = clipPos(cm.doc, pos);
|
|
if (!cm.options.lineWrapping) left = charWidth(cm.display) * pos.ch;
|
|
var lineObj = getLine(cm.doc, pos.line);
|
|
var top = heightAtLine(lineObj) + paddingTop(cm.display);
|
|
return {left: left, right: left, top: top, bottom: top + lineObj.height};
|
|
}
|
|
|
|
// Positions returned by coordsChar contain some extra information.
|
|
// xRel is the relative x position of the input coordinates compared
|
|
// to the found position (so xRel > 0 means the coordinates are to
|
|
// the right of the character position, for example). When outside
|
|
// is true, that means the coordinates lie outside the line's
|
|
// vertical range.
|
|
function PosWithInfo(line, ch, outside, xRel) {
|
|
var pos = Pos(line, ch);
|
|
pos.xRel = xRel;
|
|
if (outside) pos.outside = true;
|
|
return pos;
|
|
}
|
|
|
|
// Compute the character position closest to the given coordinates.
|
|
// Input must be lineSpace-local ("div" coordinate system).
|
|
function coordsChar(cm, x, y) {
|
|
var doc = cm.doc;
|
|
y += cm.display.viewOffset;
|
|
if (y < 0) return PosWithInfo(doc.first, 0, true, -1);
|
|
var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
|
|
if (lineN > last)
|
|
return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);
|
|
if (x < 0) x = 0;
|
|
|
|
var lineObj = getLine(doc, lineN);
|
|
for (;;) {
|
|
var found = coordsCharInner(cm, lineObj, lineN, x, y);
|
|
var merged = collapsedSpanAtEnd(lineObj);
|
|
var mergedPos = merged && merged.find(0, true);
|
|
if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
|
|
lineN = lineNo(lineObj = mergedPos.to.line);
|
|
else
|
|
return found;
|
|
}
|
|
}
|
|
|
|
function coordsCharInner(cm, lineObj, lineNo, x, y) {
|
|
var innerOff = y - heightAtLine(lineObj);
|
|
var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
|
|
var preparedMeasure = prepareMeasureForLine(cm, lineObj);
|
|
|
|
function getX(ch) {
|
|
var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure);
|
|
wrongLine = true;
|
|
if (innerOff > sp.bottom) return sp.left - adjust;
|
|
else if (innerOff < sp.top) return sp.left + adjust;
|
|
else wrongLine = false;
|
|
return sp.left;
|
|
}
|
|
|
|
var bidi = getOrder(lineObj), dist = lineObj.text.length;
|
|
var from = lineLeft(lineObj), to = lineRight(lineObj);
|
|
var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;
|
|
|
|
if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1);
|
|
// Do a binary search between these bounds.
|
|
for (;;) {
|
|
if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
|
|
var ch = x < fromX || x - fromX <= toX - x ? from : to;
|
|
var xDiff = x - (ch == from ? fromX : toX);
|
|
while (isExtendingChar(lineObj.text.charAt(ch))) ++ch;
|
|
var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
|
|
xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0);
|
|
return pos;
|
|
}
|
|
var step = Math.ceil(dist / 2), middle = from + step;
|
|
if (bidi) {
|
|
middle = from;
|
|
for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
|
|
}
|
|
var middleX = getX(middle);
|
|
if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;}
|
|
else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;}
|
|
}
|
|
}
|
|
|
|
var measureText;
|
|
// Compute the default text height.
|
|
function textHeight(display) {
|
|
if (display.cachedTextHeight != null) return display.cachedTextHeight;
|
|
if (measureText == null) {
|
|
measureText = elt("pre");
|
|
// Measure a bunch of lines, for browsers that compute
|
|
// fractional heights.
|
|
for (var i = 0; i < 49; ++i) {
|
|
measureText.appendChild(document.createTextNode("x"));
|
|
measureText.appendChild(elt("br"));
|
|
}
|
|
measureText.appendChild(document.createTextNode("x"));
|
|
}
|
|
removeChildrenAndAdd(display.measure, measureText);
|
|
var height = measureText.offsetHeight / 50;
|
|
if (height > 3) display.cachedTextHeight = height;
|
|
removeChildren(display.measure);
|
|
return height || 1;
|
|
}
|
|
|
|
// Compute the default character width.
|
|
function charWidth(display) {
|
|
if (display.cachedCharWidth != null) return display.cachedCharWidth;
|
|
var anchor = elt("span", "xxxxxxxxxx");
|
|
var pre = elt("pre", [anchor]);
|
|
removeChildrenAndAdd(display.measure, pre);
|
|
var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;
|
|
if (width > 2) display.cachedCharWidth = width;
|
|
return width || 10;
|
|
}
|
|
|
|
// OPERATIONS
|
|
|
|
// Operations are used to wrap a series of changes to the editor
|
|
// state in such a way that each change won't have to update the
|
|
// cursor and display (which would be awkward, slow, and
|
|
// error-prone). Instead, display updates are batched and then all
|
|
// combined and executed at once.
|
|
|
|
var operationGroup = null;
|
|
|
|
var nextOpId = 0;
|
|
// Start a new operation.
|
|
function startOperation(cm) {
|
|
cm.curOp = {
|
|
cm: cm,
|
|
viewChanged: false, // Flag that indicates that lines might need to be redrawn
|
|
startHeight: cm.doc.height, // Used to detect need to update scrollbar
|
|
forceUpdate: false, // Used to force a redraw
|
|
updateInput: null, // Whether to reset the input textarea
|
|
typing: false, // Whether this reset should be careful to leave existing text (for compositing)
|
|
changeObjs: null, // Accumulated changes, for firing change events
|
|
cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
|
|
cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already
|
|
selectionChanged: false, // Whether the selection needs to be redrawn
|
|
updateMaxLine: false, // Set when the widest line needs to be determined anew
|
|
scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
|
|
scrollToPos: null, // Used to scroll to a specific position
|
|
id: ++nextOpId // Unique ID
|
|
};
|
|
if (operationGroup) {
|
|
operationGroup.ops.push(cm.curOp);
|
|
} else {
|
|
cm.curOp.ownsGroup = operationGroup = {
|
|
ops: [cm.curOp],
|
|
delayedCallbacks: []
|
|
};
|
|
}
|
|
}
|
|
|
|
function fireCallbacksForOps(group) {
|
|
// Calls delayed callbacks and cursorActivity handlers until no
|
|
// new ones appear
|
|
var callbacks = group.delayedCallbacks, i = 0;
|
|
do {
|
|
for (; i < callbacks.length; i++)
|
|
callbacks[i]();
|
|
for (var j = 0; j < group.ops.length; j++) {
|
|
var op = group.ops[j];
|
|
if (op.cursorActivityHandlers)
|
|
while (op.cursorActivityCalled < op.cursorActivityHandlers.length)
|
|
op.cursorActivityHandlers[op.cursorActivityCalled++](op.cm);
|
|
}
|
|
} while (i < callbacks.length);
|
|
}
|
|
|
|
// Finish an operation, updating the display and signalling delayed events
|
|
function endOperation(cm) {
|
|
var op = cm.curOp, group = op.ownsGroup;
|
|
if (!group) return;
|
|
|
|
try { fireCallbacksForOps(group); }
|
|
finally {
|
|
operationGroup = null;
|
|
for (var i = 0; i < group.ops.length; i++)
|
|
group.ops[i].cm.curOp = null;
|
|
endOperations(group);
|
|
}
|
|
}
|
|
|
|
// The DOM updates done when an operation finishes are batched so
|
|
// that the minimum number of relayouts are required.
|
|
function endOperations(group) {
|
|
var ops = group.ops;
|
|
for (var i = 0; i < ops.length; i++) // Read DOM
|
|
endOperation_R1(ops[i]);
|
|
for (var i = 0; i < ops.length; i++) // Write DOM (maybe)
|
|
endOperation_W1(ops[i]);
|
|
for (var i = 0; i < ops.length; i++) // Read DOM
|
|
endOperation_R2(ops[i]);
|
|
for (var i = 0; i < ops.length; i++) // Write DOM (maybe)
|
|
endOperation_W2(ops[i]);
|
|
for (var i = 0; i < ops.length; i++) // Read DOM
|
|
endOperation_finish(ops[i]);
|
|
}
|
|
|
|
function endOperation_R1(op) {
|
|
var cm = op.cm, display = cm.display;
|
|
maybeClipScrollbars(cm);
|
|
if (op.updateMaxLine) findMaxLine(cm);
|
|
|
|
op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||
|
|
op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
|
|
op.scrollToPos.to.line >= display.viewTo) ||
|
|
display.maxLineChanged && cm.options.lineWrapping;
|
|
op.update = op.mustUpdate &&
|
|
new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);
|
|
}
|
|
|
|
function endOperation_W1(op) {
|
|
op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);
|
|
}
|
|
|
|
function endOperation_R2(op) {
|
|
var cm = op.cm, display = cm.display;
|
|
if (op.updatedDisplay) updateHeightsInViewport(cm);
|
|
|
|
op.barMeasure = measureForScrollbars(cm);
|
|
|
|
// If the max line changed since it was last measured, measure it,
|
|
// and ensure the document's width matches it.
|
|
// updateDisplay_W2 will use these properties to do the actual resizing
|
|
if (display.maxLineChanged && !cm.options.lineWrapping) {
|
|
op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;
|
|
cm.display.sizerWidth = op.adjustWidthTo;
|
|
op.barMeasure.scrollWidth =
|
|
Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);
|
|
op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));
|
|
}
|
|
|
|
if (op.updatedDisplay || op.selectionChanged)
|
|
op.newSelectionNodes = drawSelection(cm);
|
|
}
|
|
|
|
function endOperation_W2(op) {
|
|
var cm = op.cm;
|
|
|
|
if (op.adjustWidthTo != null) {
|
|
cm.display.sizer.style.minWidth = op.adjustWidthTo + "px";
|
|
if (op.maxScrollLeft < cm.doc.scrollLeft)
|
|
setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true);
|
|
cm.display.maxLineChanged = false;
|
|
}
|
|
|
|
if (op.newSelectionNodes)
|
|
showSelection(cm, op.newSelectionNodes);
|
|
if (op.updatedDisplay)
|
|
setDocumentHeight(cm, op.barMeasure);
|
|
if (op.updatedDisplay || op.startHeight != cm.doc.height)
|
|
updateScrollbars(cm, op.barMeasure);
|
|
|
|
if (op.selectionChanged) restartBlink(cm);
|
|
|
|
if (cm.state.focused && op.updateInput)
|
|
resetInput(cm, op.typing);
|
|
}
|
|
|
|
function endOperation_finish(op) {
|
|
var cm = op.cm, display = cm.display, doc = cm.doc;
|
|
|
|
if (op.updatedDisplay) postUpdateDisplay(cm, op.update);
|
|
|
|
// Abort mouse wheel delta measurement, when scrolling explicitly
|
|
if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))
|
|
display.wheelStartX = display.wheelStartY = null;
|
|
|
|
// Propagate the scroll position to the actual DOM scroller
|
|
if (op.scrollTop != null && (display.scroller.scrollTop != op.scrollTop || op.forceScroll)) {
|
|
doc.scrollTop = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop));
|
|
display.scrollbars.setScrollTop(doc.scrollTop);
|
|
display.scroller.scrollTop = doc.scrollTop;
|
|
}
|
|
if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft || op.forceScroll)) {
|
|
doc.scrollLeft = Math.max(0, Math.min(display.scroller.scrollWidth - displayWidth(cm), op.scrollLeft));
|
|
display.scrollbars.setScrollLeft(doc.scrollLeft);
|
|
display.scroller.scrollLeft = doc.scrollLeft;
|
|
alignHorizontally(cm);
|
|
}
|
|
// If we need to scroll a specific position into view, do so.
|
|
if (op.scrollToPos) {
|
|
var coords = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
|
|
clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);
|
|
if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords);
|
|
}
|
|
|
|
// Fire events for markers that are hidden/unidden by editing or
|
|
// undoing
|
|
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");
|
|
|
|
if (display.wrapper.offsetHeight)
|
|
doc.scrollTop = cm.display.scroller.scrollTop;
|
|
|
|
// Fire change events, and delayed event handlers
|
|
if (op.changeObjs)
|
|
signal(cm, "changes", cm, op.changeObjs);
|
|
if (op.update)
|
|
op.update.finish();
|
|
}
|
|
|
|
// Run the given function in an operation
|
|
function runInOp(cm, f) {
|
|
if (cm.curOp) return f();
|
|
startOperation(cm);
|
|
try { return f(); }
|
|
finally { endOperation(cm); }
|
|
}
|
|
// Wraps a function in an operation. Returns the wrapped function.
|
|
function operation(cm, f) {
|
|
return function() {
|
|
if (cm.curOp) return f.apply(cm, arguments);
|
|
startOperation(cm);
|
|
try { return f.apply(cm, arguments); }
|
|
finally { endOperation(cm); }
|
|
};
|
|
}
|
|
// Used to add methods to editor and doc instances, wrapping them in
|
|
// operations.
|
|
function methodOp(f) {
|
|
return function() {
|
|
if (this.curOp) return f.apply(this, arguments);
|
|
startOperation(this);
|
|
try { return f.apply(this, arguments); }
|
|
finally { endOperation(this); }
|
|
};
|
|
}
|
|
function docMethodOp(f) {
|
|
return function() {
|
|
var cm = this.cm;
|
|
if (!cm || cm.curOp) return f.apply(this, arguments);
|
|
startOperation(cm);
|
|
try { return f.apply(this, arguments); }
|
|
finally { endOperation(cm); }
|
|
};
|
|
}
|
|
|
|
// VIEW TRACKING
|
|
|
|
// These objects are used to represent the visible (currently drawn)
|
|
// part of the document. A LineView may correspond to multiple
|
|
// logical lines, if those are connected by collapsed ranges.
|
|
function LineView(doc, line, lineN) {
|
|
// The starting line
|
|
this.line = line;
|
|
// Continuing lines, if any
|
|
this.rest = visualLineContinued(line);
|
|
// Number of logical lines in this visual line
|
|
this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;
|
|
this.node = this.text = null;
|
|
this.hidden = lineIsHidden(doc, line);
|
|
}
|
|
|
|
// Create a range of LineView objects for the given lines.
|
|
function buildViewArray(cm, from, to) {
|
|
var array = [], nextPos;
|
|
for (var pos = from; pos < to; pos = nextPos) {
|
|
var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);
|
|
nextPos = pos + view.size;
|
|
array.push(view);
|
|
}
|
|
return array;
|
|
}
|
|
|
|
// Updates the display.view data structure for a given change to the
|
|
// document. From and to are in pre-change coordinates. Lendiff is
|
|
// the amount of lines added or subtracted by the change. This is
|
|
// used for changes that span multiple lines, or change the way
|
|
// lines are divided into visual lines. regLineChange (below)
|
|
// registers single-line changes.
|
|
function regChange(cm, from, to, lendiff) {
|
|
if (from == null) from = cm.doc.first;
|
|
if (to == null) to = cm.doc.first + cm.doc.size;
|
|
if (!lendiff) lendiff = 0;
|
|
|
|
var display = cm.display;
|
|
if (lendiff && to < display.viewTo &&
|
|
(display.updateLineNumbers == null || display.updateLineNumbers > from))
|
|
display.updateLineNumbers = from;
|
|
|
|
cm.curOp.viewChanged = true;
|
|
|
|
if (from >= display.viewTo) { // Change after
|
|
if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
|
|
resetView(cm);
|
|
} else if (to <= display.viewFrom) { // Change before
|
|
if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
|
|
resetView(cm);
|
|
} else {
|
|
display.viewFrom += lendiff;
|
|
display.viewTo += lendiff;
|
|
}
|
|
} else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
|
|
resetView(cm);
|
|
} else if (from <= display.viewFrom) { // Top overlap
|
|
var cut = viewCuttingPoint(cm, to, to + lendiff, 1);
|
|
if (cut) {
|
|
display.view = display.view.slice(cut.index);
|
|
display.viewFrom = cut.lineN;
|
|
display.viewTo += lendiff;
|
|
} else {
|
|
resetView(cm);
|
|
}
|
|
} else if (to >= display.viewTo) { // Bottom overlap
|
|
var cut = viewCuttingPoint(cm, from, from, -1);
|
|
if (cut) {
|
|
display.view = display.view.slice(0, cut.index);
|
|
display.viewTo = cut.lineN;
|
|
} else {
|
|
resetView(cm);
|
|
}
|
|
} else { // Gap in the middle
|
|
var cutTop = viewCuttingPoint(cm, from, from, -1);
|
|
var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);
|
|
if (cutTop && cutBot) {
|
|
display.view = display.view.slice(0, cutTop.index)
|
|
.concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
|
|
.concat(display.view.slice(cutBot.index));
|
|
display.viewTo += lendiff;
|
|
} else {
|
|
resetView(cm);
|
|
}
|
|
}
|
|
|
|
var ext = display.externalMeasured;
|
|
if (ext) {
|
|
if (to < ext.lineN)
|
|
ext.lineN += lendiff;
|
|
else if (from < ext.lineN + ext.size)
|
|
display.externalMeasured = null;
|
|
}
|
|
}
|
|
|
|
// Register a change to a single line. Type must be one of "text",
|
|
// "gutter", "class", "widget"
|
|
function regLineChange(cm, line, type) {
|
|
cm.curOp.viewChanged = true;
|
|
var display = cm.display, ext = cm.display.externalMeasured;
|
|
if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
|
|
display.externalMeasured = null;
|
|
|
|
if (line < display.viewFrom || line >= display.viewTo) return;
|
|
var lineView = display.view[findViewIndex(cm, line)];
|
|
if (lineView.node == null) return;
|
|
var arr = lineView.changes || (lineView.changes = []);
|
|
if (indexOf(arr, type) == -1) arr.push(type);
|
|
}
|
|
|
|
// Clear the view.
|
|
function resetView(cm) {
|
|
cm.display.viewFrom = cm.display.viewTo = cm.doc.first;
|
|
cm.display.view = [];
|
|
cm.display.viewOffset = 0;
|
|
}
|
|
|
|
// Find the view element corresponding to a given line. Return null
|
|
// when the line isn't visible.
|
|
function findViewIndex(cm, n) {
|
|
if (n >= cm.display.viewTo) return null;
|
|
n -= cm.display.viewFrom;
|
|
if (n < 0) return null;
|
|
var view = cm.display.view;
|
|
for (var i = 0; i < view.length; i++) {
|
|
n -= view[i].size;
|
|
if (n < 0) return i;
|
|
}
|
|
}
|
|
|
|
function viewCuttingPoint(cm, oldN, newN, dir) {
|
|
var index = findViewIndex(cm, oldN), diff, view = cm.display.view;
|
|
if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)
|
|
return {index: index, lineN: newN};
|
|
for (var i = 0, n = cm.display.viewFrom; i < index; i++)
|
|
n += view[i].size;
|
|
if (n != oldN) {
|
|
if (dir > 0) {
|
|
if (index == view.length - 1) return null;
|
|
diff = (n + view[index].size) - oldN;
|
|
index++;
|
|
} else {
|
|
diff = n - oldN;
|
|
}
|
|
oldN += diff; newN += diff;
|
|
}
|
|
while (visualLineNo(cm.doc, newN) != newN) {
|
|
if (index == (dir < 0 ? 0 : view.length - 1)) return null;
|
|
newN += dir * view[index - (dir < 0 ? 1 : 0)].size;
|
|
index += dir;
|
|
}
|
|
return {index: index, lineN: newN};
|
|
}
|
|
|
|
// Force the view to cover a given range, adding empty view element
|
|
// or clipping off existing ones as needed.
|
|
function adjustView(cm, from, to) {
|
|
var display = cm.display, view = display.view;
|
|
if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
|
|
display.view = buildViewArray(cm, from, to);
|
|
display.viewFrom = from;
|
|
} else {
|
|
if (display.viewFrom > from)
|
|
display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view);
|
|
else if (display.viewFrom < from)
|
|
display.view = display.view.slice(findViewIndex(cm, from));
|
|
display.viewFrom = from;
|
|
if (display.viewTo < to)
|
|
display.view = display.view.concat(buildViewArray(cm, display.viewTo, to));
|
|
else if (display.viewTo > to)
|
|
display.view = display.view.slice(0, findViewIndex(cm, to));
|
|
}
|
|
display.viewTo = to;
|
|
}
|
|
|
|
// Count the number of lines in the view whose DOM representation is
|
|
// out of date (or nonexistent).
|
|
function countDirtyView(cm) {
|
|
var view = cm.display.view, dirty = 0;
|
|
for (var i = 0; i < view.length; i++) {
|
|
var lineView = view[i];
|
|
if (!lineView.hidden && (!lineView.node || lineView.changes)) ++dirty;
|
|
}
|
|
return dirty;
|
|
}
|
|
|
|
// INPUT HANDLING
|
|
|
|
// Poll for input changes, using the normal rate of polling. This
|
|
// runs as long as the editor is focused.
|
|
function slowPoll(cm) {
|
|
if (cm.display.pollingFast) return;
|
|
cm.display.poll.set(cm.options.pollInterval, function() {
|
|
readInput(cm);
|
|
if (cm.state.focused) slowPoll(cm);
|
|
});
|
|
}
|
|
|
|
// When an event has just come in that is likely to add or change
|
|
// something in the input textarea, we poll faster, to ensure that
|
|
// the change appears on the screen quickly.
|
|
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);
|
|
}
|
|
|
|
// This will be set to an array of strings when copying, so that,
|
|
// when pasting, we know what kind of selections the copied text
|
|
// was made out of.
|
|
var lastCopied = null;
|
|
|
|
// Read input from the textarea, and update the document to match.
|
|
// When something is selected, it is present in the textarea, and
|
|
// selected (unless it is huge, in which case a placeholder is
|
|
// used). When nothing is selected, the cursor sits after previously
|
|
// seen text (can be empty), which is stored in prevInput (we must
|
|
// not reset the textarea when typing, because that breaks IME).
|
|
function readInput(cm) {
|
|
var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc;
|
|
// Since this is called a *lot*, try to bail out as cheaply as
|
|
// possible when it is clear that nothing happened. hasSelection
|
|
// will be the case when there is a lot of text in the textarea,
|
|
// in which case reading its value would be expensive.
|
|
if (!cm.state.focused || (hasSelection(input) && !prevInput) || isReadOnly(cm) || cm.options.disableInput || cm.state.keySeq)
|
|
return false;
|
|
// See paste handler for more on the fakedLastChar kludge
|
|
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 nothing changed, bail.
|
|
if (text == prevInput && !cm.somethingSelected()) return false;
|
|
// Work around nonsensical selection resetting in IE9/10, and
|
|
// inexplicable appearance of private area unicode characters on
|
|
// some key combos in Mac (#2689).
|
|
if (ie && ie_version >= 9 && cm.display.inputHasSelection === text ||
|
|
mac && /[\uf700-\uf7ff]/.test(text)) {
|
|
resetInput(cm);
|
|
return false;
|
|
}
|
|
|
|
var withOp = !cm.curOp;
|
|
if (withOp) startOperation(cm);
|
|
cm.display.shift = false;
|
|
|
|
if (text.charCodeAt(0) == 0x200b && doc.sel == cm.display.selForContextMenu && !prevInput)
|
|
prevInput = "\u200b";
|
|
// Find the part of the input that is actually new
|
|
var same = 0, l = Math.min(prevInput.length, text.length);
|
|
while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;
|
|
var inserted = text.slice(same), textLines = splitLines(inserted);
|
|
|
|
// When pasing N lines into N selections, insert one line per selection
|
|
var multiPaste = null;
|
|
if (cm.state.pasteIncoming && doc.sel.ranges.length > 1) {
|
|
if (lastCopied && lastCopied.join("\n") == inserted)
|
|
multiPaste = doc.sel.ranges.length % lastCopied.length == 0 && map(lastCopied, splitLines);
|
|
else if (textLines.length == doc.sel.ranges.length)
|
|
multiPaste = map(textLines, function(l) { return [l]; });
|
|
}
|
|
|
|
// Normal behavior is to insert the new text into every selection
|
|
for (var i = doc.sel.ranges.length - 1; i >= 0; i--) {
|
|
var range = doc.sel.ranges[i];
|
|
var from = range.from(), to = range.to();
|
|
// Handle deletion
|
|
if (same < prevInput.length)
|
|
from = Pos(from.line, from.ch - (prevInput.length - same));
|
|
// Handle overwrite
|
|
else if (cm.state.overwrite && range.empty() && !cm.state.pasteIncoming)
|
|
to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));
|
|
var updateInput = cm.curOp.updateInput;
|
|
var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i % multiPaste.length] : textLines,
|
|
origin: cm.state.pasteIncoming ? "paste" : cm.state.cutIncoming ? "cut" : "+input"};
|
|
makeChange(cm.doc, changeEvent);
|
|
signalLater(cm, "inputRead", cm, changeEvent);
|
|
// When an 'electric' character is inserted, immediately trigger a reindent
|
|
if (inserted && !cm.state.pasteIncoming && cm.options.electricChars &&
|
|
cm.options.smartIndent && range.head.ch < 100 &&
|
|
(!i || doc.sel.ranges[i - 1].head.line != range.head.line)) {
|
|
var mode = cm.getModeAt(range.head);
|
|
var end = changeEnd(changeEvent);
|
|
if (mode.electricChars) {
|
|
for (var j = 0; j < mode.electricChars.length; j++)
|
|
if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
|
|
indentLine(cm, end.line, "smart");
|
|
break;
|
|
}
|
|
} else if (mode.electricInput) {
|
|
if (mode.electricInput.test(getLine(doc, end.line).text.slice(0, end.ch)))
|
|
indentLine(cm, end.line, "smart");
|
|
}
|
|
}
|
|
}
|
|
ensureCursorVisible(cm);
|
|
cm.curOp.updateInput = updateInput;
|
|
cm.curOp.typing = true;
|
|
|
|
// Don't leave long text in the textarea, since it makes further polling slow
|
|
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 = cm.state.cutIncoming = false;
|
|
return true;
|
|
}
|
|
|
|
// Reset the input to correspond to the selection (or to be empty,
|
|
// when not typing and nothing is selected)
|
|
function resetInput(cm, typing) {
|
|
if (cm.display.contextMenuPending) return;
|
|
var minimal, selected, doc = cm.doc;
|
|
if (cm.somethingSelected()) {
|
|
cm.display.prevInput = "";
|
|
var range = doc.sel.primary();
|
|
minimal = hasCopyEvent &&
|
|
(range.to().line - range.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_version >= 9) cm.display.inputHasSelection = content;
|
|
} else if (!typing) {
|
|
cm.display.prevInput = cm.display.input.value = "";
|
|
if (ie && ie_version >= 9) cm.display.inputHasSelection = null;
|
|
}
|
|
cm.display.inaccurateSelection = minimal;
|
|
}
|
|
|
|
function focusInput(cm) {
|
|
if (cm.options.readOnly != "nocursor" && (!mobile || activeElt() != cm.display.input)) {
|
|
try { cm.display.input.focus(); }
|
|
catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM
|
|
}
|
|
}
|
|
|
|
function ensureFocus(cm) {
|
|
if (!cm.state.focused) { focusInput(cm); onFocus(cm); }
|
|
}
|
|
|
|
function isReadOnly(cm) {
|
|
return cm.options.readOnly || cm.doc.cantEdit;
|
|
}
|
|
|
|
// EVENT HANDLERS
|
|
|
|
// Attach the necessary event handlers when initializing the editor
|
|
function registerEventHandlers(cm) {
|
|
var d = cm.display;
|
|
on(d.scroller, "mousedown", operation(cm, onMouseDown));
|
|
// Older IE's will not fire a second mousedown for a double click
|
|
if (ie && ie_version < 11)
|
|
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 = cm.findWordAt(pos);
|
|
extendSelection(cm.doc, word.anchor, word.head);
|
|
}));
|
|
else
|
|
on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); });
|
|
// Prevent normal selection in the editor (we handle our own)
|
|
on(d.lineSpace, "selectstart", function(e) {
|
|
if (!eventInWidget(d, e)) e_preventDefault(e);
|
|
});
|
|
// Some browsers fire contextmenu *after* opening the menu, at
|
|
// which point we can't mess with it anymore. Context menu is
|
|
// handled in onMouseDown for these browsers.
|
|
if (!captureRightClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});
|
|
|
|
// Sync scrolling between fake scrollbars and real scrollable
|
|
// area, ensure viewport is updated when scrolling.
|
|
on(d.scroller, "scroll", function() {
|
|
if (d.scroller.clientHeight) {
|
|
setScrollTop(cm, d.scroller.scrollTop);
|
|
setScrollLeft(cm, d.scroller.scrollLeft, true);
|
|
signal(cm, "scroll", cm);
|
|
}
|
|
});
|
|
|
|
// Listen to wheel events in order to try and update the viewport on time.
|
|
on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
|
|
on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});
|
|
|
|
// Prevent wrapper from ever scrolling
|
|
on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
|
|
|
|
on(d.input, "keyup", function(e) { onKeyUp.call(cm, e); });
|
|
on(d.input, "input", function() {
|
|
if (ie && ie_version >= 9 && cm.display.inputHasSelection) cm.display.inputHasSelection = null;
|
|
readInput(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)) 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;
|
|
cm.state.pasteIncoming = true;
|
|
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 += "$";
|
|
// The selection end needs to be set before the start, otherwise there
|
|
// can be an intermediate non-empty selection between the two, which
|
|
// can override the middle-click paste buffer on linux and cause the
|
|
// wrong thing to get pasted.
|
|
d.input.selectionEnd = end;
|
|
d.input.selectionStart = start;
|
|
cm.state.fakedLastChar = true;
|
|
}
|
|
cm.state.pasteIncoming = true;
|
|
fastPoll(cm);
|
|
});
|
|
|
|
function prepareCopyCut(e) {
|
|
if (cm.somethingSelected()) {
|
|
lastCopied = cm.getSelections();
|
|
if (d.inaccurateSelection) {
|
|
d.prevInput = "";
|
|
d.inaccurateSelection = false;
|
|
d.input.value = lastCopied.join("\n");
|
|
selectInput(d.input);
|
|
}
|
|
} else {
|
|
var text = [], ranges = [];
|
|
for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
|
|
var line = cm.doc.sel.ranges[i].head.line;
|
|
var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};
|
|
ranges.push(lineRange);
|
|
text.push(cm.getRange(lineRange.anchor, lineRange.head));
|
|
}
|
|
if (e.type == "cut") {
|
|
cm.setSelections(ranges, null, sel_dontScroll);
|
|
} else {
|
|
d.prevInput = "";
|
|
d.input.value = text.join("\n");
|
|
selectInput(d.input);
|
|
}
|
|
lastCopied = text;
|
|
}
|
|
if (e.type == "cut") cm.state.cutIncoming = true;
|
|
}
|
|
on(d.input, "cut", prepareCopyCut);
|
|
on(d.input, "copy", prepareCopyCut);
|
|
|
|
// Needed to handle Tab key in KHTML
|
|
if (khtml) on(d.sizer, "mouseup", function() {
|
|
if (activeElt() == d.input) d.input.blur();
|
|
focusInput(cm);
|
|
});
|
|
}
|
|
|
|
// Called when the window resizes
|
|
function onResize(cm) {
|
|
var d = cm.display;
|
|
if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth)
|
|
return;
|
|
// Might be a text scaling operation, clear size caches.
|
|
d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
|
|
d.scrollbarsClipped = false;
|
|
cm.setSize();
|
|
}
|
|
|
|
// MOUSE EVENTS
|
|
|
|
// Return true when the given mouse event happened in a widget
|
|
function eventInWidget(display, e) {
|
|
for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
|
|
if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") ||
|
|
(n.parentNode == display.sizer && n != display.mover))
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Given a mouse event, find the corresponding position. If liberal
|
|
// is false, it checks whether a gutter or scrollbar was clicked,
|
|
// and returns null if it was. forRect is used by rectangular
|
|
// selections, and tries to estimate a character position even for
|
|
// coordinates beyond the right of the text.
|
|
function posFromMouse(cm, e, liberal, forRect) {
|
|
var display = cm.display;
|
|
if (!liberal && e_target(e).getAttribute("not-content") == "true") return null;
|
|
|
|
var x, y, space = display.lineSpace.getBoundingClientRect();
|
|
// Fails unpredictably on IE[67] when mouse is dragged around quickly.
|
|
try { x = e.clientX - space.left; y = e.clientY - space.top; }
|
|
catch (e) { return null; }
|
|
var coords = coordsChar(cm, x, y), line;
|
|
if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
|
|
var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
|
|
coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));
|
|
}
|
|
return coords;
|
|
}
|
|
|
|
// A mouse down can be a single click, double click, triple click,
|
|
// start of selection drag, start of text drag, new cursor
|
|
// (ctrl-click), rectangle drag (alt-drag), or xwin
|
|
// middle-click-paste. Or it might be a click on something we should
|
|
// not interfere with, such as a scrollbar or widget.
|
|
function onMouseDown(e) {
|
|
if (signalDOMEvent(this, e)) return;
|
|
var cm = this, display = cm.display;
|
|
display.shift = e.shiftKey;
|
|
|
|
if (eventInWidget(display, e)) {
|
|
if (!webkit) {
|
|
// Briefly turn off draggability, to allow widgets to do
|
|
// normal dragging things.
|
|
display.scroller.draggable = false;
|
|
setTimeout(function(){display.scroller.draggable = true;}, 100);
|
|
}
|
|
return;
|
|
}
|
|
if (clickInGutter(cm, e)) return;
|
|
var start = posFromMouse(cm, e);
|
|
window.focus();
|
|
|
|
switch (e_button(e)) {
|
|
case 1:
|
|
if (start)
|
|
leftButtonDown(cm, e, start);
|
|
else if (e_target(e) == display.scroller)
|
|
e_preventDefault(e);
|
|
break;
|
|
case 2:
|
|
if (webkit) cm.state.lastMiddleDown = +new Date;
|
|
if (start) extendSelection(cm.doc, start);
|
|
setTimeout(bind(focusInput, cm), 20);
|
|
e_preventDefault(e);
|
|
break;
|
|
case 3:
|
|
if (captureRightClick) onContextMenu(cm, e);
|
|
break;
|
|
}
|
|
}
|
|
|
|
var lastClick, lastDoubleClick;
|
|
function leftButtonDown(cm, e, start) {
|
|
setTimeout(bind(ensureFocus, cm), 0);
|
|
|
|
var now = +new Date, type;
|
|
if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) {
|
|
type = "triple";
|
|
} else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {
|
|
type = "double";
|
|
lastDoubleClick = {time: now, pos: start};
|
|
} else {
|
|
type = "single";
|
|
lastClick = {time: now, pos: start};
|
|
}
|
|
|
|
var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained;
|
|
if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) &&
|
|
type == "single" && (contained = sel.contains(start)) > -1 &&
|
|
!sel.ranges[contained].empty())
|
|
leftButtonStartDrag(cm, e, start, modifier);
|
|
else
|
|
leftButtonSelect(cm, e, start, type, modifier);
|
|
}
|
|
|
|
// Start a text drag. When it ends, see if any dragging actually
|
|
// happen, and treat as a click if it didn't.
|
|
function leftButtonStartDrag(cm, e, start, modifier) {
|
|
var display = cm.display;
|
|
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);
|
|
if (!modifier)
|
|
extendSelection(cm.doc, start);
|
|
focusInput(cm);
|
|
// Work around unexplainable focus problem in IE9 (#2127)
|
|
if (ie && ie_version == 9)
|
|
setTimeout(function() {document.body.focus(); focusInput(cm);}, 20);
|
|
}
|
|
});
|
|
// 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);
|
|
}
|
|
|
|
// Normal selection, as opposed to text dragging.
|
|
function leftButtonSelect(cm, e, start, type, addNew) {
|
|
var display = cm.display, doc = cm.doc;
|
|
e_preventDefault(e);
|
|
|
|
var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges;
|
|
if (addNew && !e.shiftKey) {
|
|
ourIndex = doc.sel.contains(start);
|
|
if (ourIndex > -1)
|
|
ourRange = ranges[ourIndex];
|
|
else
|
|
ourRange = new Range(start, start);
|
|
} else {
|
|
ourRange = doc.sel.primary();
|
|
}
|
|
|
|
if (e.altKey) {
|
|
type = "rect";
|
|
if (!addNew) ourRange = new Range(start, start);
|
|
start = posFromMouse(cm, e, true, true);
|
|
ourIndex = -1;
|
|
} else if (type == "double") {
|
|
var word = cm.findWordAt(start);
|
|
if (cm.display.shift || doc.extend)
|
|
ourRange = extendRange(doc, ourRange, word.anchor, word.head);
|
|
else
|
|
ourRange = word;
|
|
} else if (type == "triple") {
|
|
var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0)));
|
|
if (cm.display.shift || doc.extend)
|
|
ourRange = extendRange(doc, ourRange, line.anchor, line.head);
|
|
else
|
|
ourRange = line;
|
|
} else {
|
|
ourRange = extendRange(doc, ourRange, start);
|
|
}
|
|
|
|
if (!addNew) {
|
|
ourIndex = 0;
|
|
setSelection(doc, new Selection([ourRange], 0), sel_mouse);
|
|
startSel = doc.sel;
|
|
} else if (ourIndex == -1) {
|
|
ourIndex = ranges.length;
|
|
setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex),
|
|
{scroll: false, origin: "*mouse"});
|
|
} else if (ranges.length > 1 && ranges[ourIndex].empty() && type == "single") {
|
|
setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0));
|
|
startSel = doc.sel;
|
|
} else {
|
|
replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
|
|
}
|
|
|
|
var lastPos = start;
|
|
function extendTo(pos) {
|
|
if (cmp(lastPos, pos) == 0) return;
|
|
lastPos = pos;
|
|
|
|
if (type == "rect") {
|
|
var ranges = [], tabSize = cm.options.tabSize;
|
|
var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);
|
|
var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);
|
|
var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);
|
|
for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
|
|
line <= end; line++) {
|
|
var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);
|
|
if (left == right)
|
|
ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos)));
|
|
else if (text.length > leftPos)
|
|
ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize))));
|
|
}
|
|
if (!ranges.length) ranges.push(new Range(start, start));
|
|
setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
|
|
{origin: "*mouse", scroll: false});
|
|
cm.scrollIntoView(pos);
|
|
} else {
|
|
var oldRange = ourRange;
|
|
var anchor = oldRange.anchor, head = pos;
|
|
if (type != "single") {
|
|
if (type == "double")
|
|
var range = cm.findWordAt(pos);
|
|
else
|
|
var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0)));
|
|
if (cmp(range.anchor, anchor) > 0) {
|
|
head = range.head;
|
|
anchor = minPos(oldRange.from(), range.anchor);
|
|
} else {
|
|
head = range.anchor;
|
|
anchor = maxPos(oldRange.to(), range.head);
|
|
}
|
|
}
|
|
var ranges = startSel.ranges.slice(0);
|
|
ranges[ourIndex] = new Range(clipPos(doc, anchor), head);
|
|
setSelection(doc, normalizeSelection(ranges, ourIndex), sel_mouse);
|
|
}
|
|
}
|
|
|
|
var editorSize = display.wrapper.getBoundingClientRect();
|
|
// Used to ensure timeout re-tries don't fire when another extend
|
|
// happened in the meantime (clearTimeout isn't reliable -- at
|
|
// least on Chrome, the timeouts still happen even when cleared,
|
|
// if the clear happens after their scheduled firing time).
|
|
var counter = 0;
|
|
|
|
function extend(e) {
|
|
var curCount = ++counter;
|
|
var cur = posFromMouse(cm, e, true, type == "rect");
|
|
if (!cur) return;
|
|
if (cmp(cur, lastPos) != 0) {
|
|
ensureFocus(cm);
|
|
extendTo(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);
|
|
doc.history.lastSelOrigin = null;
|
|
}
|
|
|
|
var move = operation(cm, function(e) {
|
|
if (!e_button(e)) done(e);
|
|
else extend(e);
|
|
});
|
|
var up = operation(cm, done);
|
|
on(document, "mousemove", move);
|
|
on(document, "mouseup", up);
|
|
}
|
|
|
|
// Determines whether an event happened in the gutter, and fires the
|
|
// handlers for the corresponding event.
|
|
function gutterEvent(cm, e, type, prevent, signalfn) {
|
|
try { var mX = e.clientX, mY = e.clientY; }
|
|
catch(e) { return false; }
|
|
if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false;
|
|
if (prevent) e_preventDefault(e);
|
|
|
|
var display = cm.display;
|
|
var lineBox = display.lineDiv.getBoundingClientRect();
|
|
|
|
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 && g.getBoundingClientRect().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 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))
|
|
return;
|
|
e_preventDefault(e);
|
|
if (ie) lastDrop = +new Date;
|
|
var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
|
|
if (!pos || isReadOnly(cm)) return;
|
|
// Might be a file drop, in which case we simply extract the text
|
|
// and insert it.
|
|
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 = operation(cm, function() {
|
|
text[i] = reader.result;
|
|
if (++read == n) {
|
|
pos = clipPos(cm.doc, pos);
|
|
var change = {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"};
|
|
makeChange(cm.doc, change);
|
|
setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)));
|
|
}
|
|
});
|
|
reader.readAsText(file);
|
|
};
|
|
for (var i = 0; i < n; ++i) loadFile(files[i], i);
|
|
} else { // Normal drop
|
|
// Don't do a replace if the drop happened inside of the selected text.
|
|
if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
|
|
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) {
|
|
if (cm.state.draggingText && !(mac ? e.metaKey : e.ctrlKey))
|
|
var selected = cm.listSelections();
|
|
setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));
|
|
if (selected) for (var i = 0; i < selected.length; ++i)
|
|
replaceRange(cm.doc, "", selected[i].anchor, selected[i].head, "drag");
|
|
cm.replaceSelection(text, "around", "paste");
|
|
focusInput(cm);
|
|
}
|
|
}
|
|
catch(e){}
|
|
}
|
|
}
|
|
|
|
function onDragStart(cm, e) {
|
|
if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; }
|
|
if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return;
|
|
|
|
e.dataTransfer.setData("Text", cm.getSelection());
|
|
|
|
// 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 (presto) {
|
|
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 (presto) img.parentNode.removeChild(img);
|
|
}
|
|
}
|
|
|
|
// SCROLL EVENTS
|
|
|
|
// Sync the scrollable area and scrollbars, ensure the viewport
|
|
// covers the visible area.
|
|
function setScrollTop(cm, val) {
|
|
if (Math.abs(cm.doc.scrollTop - val) < 2) return;
|
|
cm.doc.scrollTop = val;
|
|
if (!gecko) updateDisplaySimple(cm, {top: val});
|
|
if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
|
|
cm.display.scrollbars.setScrollTop(val);
|
|
if (gecko) updateDisplaySimple(cm);
|
|
startWorker(cm, 100);
|
|
}
|
|
// Sync scroller and scrollbar, ensure the gutter elements are
|
|
// aligned.
|
|
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;
|
|
cm.display.scrollbars.setScrollLeft(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;
|
|
|
|
var wheelEventDelta = function(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;
|
|
return {x: dx, y: dy};
|
|
};
|
|
CodeMirror.wheelEventPixels = function(e) {
|
|
var delta = wheelEventDelta(e);
|
|
delta.x *= wheelPixelsPerUnit;
|
|
delta.y *= wheelPixelsPerUnit;
|
|
return delta;
|
|
};
|
|
|
|
function onScrollWheel(cm, e) {
|
|
var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y;
|
|
|
|
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) {
|
|
outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
|
|
for (var i = 0; i < view.length; i++) {
|
|
if (view[i].node == cur) {
|
|
cm.display.currentWheelTarget = cur;
|
|
break outer;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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 && !presto && 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;
|
|
}
|
|
|
|
// 'Project' the visible viewport to cover the area that is being
|
|
// scrolled into view (if we know enough to estimate it).
|
|
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);
|
|
updateDisplaySimple(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;
|
|
}
|
|
}
|
|
}
|
|
|
|
// KEY EVENTS
|
|
|
|
// Run a handler that was bound to a key.
|
|
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 prevShift = cm.display.shift, done = false;
|
|
try {
|
|
if (isReadOnly(cm)) cm.state.suppressEdits = true;
|
|
if (dropShift) cm.display.shift = false;
|
|
done = bound(cm) != Pass;
|
|
} finally {
|
|
cm.display.shift = prevShift;
|
|
cm.state.suppressEdits = false;
|
|
}
|
|
return done;
|
|
}
|
|
|
|
function lookupKeyForEditor(cm, name, handle) {
|
|
for (var i = 0; i < cm.state.keyMaps.length; i++) {
|
|
var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);
|
|
if (result) return result;
|
|
}
|
|
return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))
|
|
|| lookupKey(name, cm.options.keyMap, handle, cm);
|
|
}
|
|
|
|
var stopSeq = new Delayed;
|
|
function dispatchKey(cm, name, e, handle) {
|
|
var seq = cm.state.keySeq;
|
|
if (seq) {
|
|
if (isModifierKey(name)) return "handled";
|
|
stopSeq.set(50, function() {
|
|
if (cm.state.keySeq == seq) {
|
|
cm.state.keySeq = null;
|
|
resetInput(cm);
|
|
}
|
|
});
|
|
name = seq + " " + name;
|
|
}
|
|
var result = lookupKeyForEditor(cm, name, handle);
|
|
|
|
if (result == "multi")
|
|
cm.state.keySeq = name;
|
|
if (result == "handled")
|
|
signalLater(cm, "keyHandled", cm, name, e);
|
|
|
|
if (result == "handled" || result == "multi") {
|
|
e_preventDefault(e);
|
|
restartBlink(cm);
|
|
}
|
|
|
|
if (seq && !result && /\'$/.test(name)) {
|
|
e_preventDefault(e);
|
|
return true;
|
|
}
|
|
return !!result;
|
|
}
|
|
|
|
// Handle a key from the keydown event.
|
|
function handleKeyBinding(cm, e) {
|
|
var name = keyName(e, true);
|
|
if (!name) return false;
|
|
|
|
if (e.shiftKey && !cm.state.keySeq) {
|
|
// 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-'.
|
|
return dispatchKey(cm, "Shift-" + name, e, function(b) {return doHandleBinding(cm, b, true);})
|
|
|| dispatchKey(cm, name, e, function(b) {
|
|
if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
|
|
return doHandleBinding(cm, b);
|
|
});
|
|
} else {
|
|
return dispatchKey(cm, name, e, function(b) { return doHandleBinding(cm, b); });
|
|
}
|
|
}
|
|
|
|
// Handle a key from the keypress event
|
|
function handleCharBinding(cm, e, ch) {
|
|
return dispatchKey(cm, "'" + ch + "'", e,
|
|
function(b) { return doHandleBinding(cm, b, true); });
|
|
}
|
|
|
|
var lastStoppedKey = null;
|
|
function onKeyDown(e) {
|
|
var cm = this;
|
|
ensureFocus(cm);
|
|
if (signalDOMEvent(cm, e)) return;
|
|
// IE does strange things with escape.
|
|
if (ie && ie_version < 11 && e.keyCode == 27) e.returnValue = false;
|
|
var code = e.keyCode;
|
|
cm.display.shift = code == 16 || e.shiftKey;
|
|
var handled = handleKeyBinding(cm, e);
|
|
if (presto) {
|
|
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("", null, "cut");
|
|
}
|
|
|
|
// Turn mouse into crosshair when Alt is held on Mac.
|
|
if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
|
|
showCrossHair(cm);
|
|
}
|
|
|
|
function showCrossHair(cm) {
|
|
var lineDiv = cm.display.lineDiv;
|
|
addClass(lineDiv, "CodeMirror-crosshair");
|
|
|
|
function up(e) {
|
|
if (e.keyCode == 18 || !e.altKey) {
|
|
rmClass(lineDiv, "CodeMirror-crosshair");
|
|
off(document, "keyup", up);
|
|
off(document, "mouseover", up);
|
|
}
|
|
}
|
|
on(document, "keyup", up);
|
|
on(document, "mouseover", up);
|
|
}
|
|
|
|
function onKeyUp(e) {
|
|
if (e.keyCode == 16) this.doc.sel.shift = false;
|
|
signalDOMEvent(this, e);
|
|
}
|
|
|
|
function onKeyPress(e) {
|
|
var cm = this;
|
|
if (signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) return;
|
|
var keyCode = e.keyCode, charCode = e.charCode;
|
|
if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
|
|
if (((presto && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;
|
|
var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
|
|
if (handleCharBinding(cm, e, ch)) return;
|
|
if (ie && ie_version >= 9) cm.display.inputHasSelection = null;
|
|
fastPoll(cm);
|
|
}
|
|
|
|
// FOCUS/BLUR EVENTS
|
|
|
|
function onFocus(cm) {
|
|
if (cm.options.readOnly == "nocursor") return;
|
|
if (!cm.state.focused) {
|
|
signal(cm, "focus", cm);
|
|
cm.state.focused = true;
|
|
addClass(cm.display.wrapper, "CodeMirror-focused");
|
|
// The prevInput test prevents this from firing when a context
|
|
// menu is closed (since the resetInput would kill the
|
|
// select-all detection hack)
|
|
if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {
|
|
resetInput(cm);
|
|
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;
|
|
rmClass(cm.display.wrapper, "CodeMirror-focused");
|
|
}
|
|
clearInterval(cm.display.blinker);
|
|
setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150);
|
|
}
|
|
|
|
// CONTEXT MENU HANDLING
|
|
|
|
// To make the context menu work, we need to briefly unhide the
|
|
// textarea (making it as unobtrusive as possible) to let the
|
|
// right-click take effect on it.
|
|
function onContextMenu(cm, e) {
|
|
if (signalDOMEvent(cm, e, "contextmenu")) return;
|
|
var display = cm.display;
|
|
if (eventInWidget(display, e) || contextMenuInGutter(cm, e)) return;
|
|
|
|
var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
|
|
if (!pos || presto) 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 && cm.doc.sel.contains(pos) == -1)
|
|
operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll);
|
|
|
|
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: " +
|
|
(ie ? "rgba(255, 255, 255, .05)" : "transparent") +
|
|
"; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
|
|
if (webkit) var oldScrollY = window.scrollY; // Work around Chrome issue (#2712)
|
|
focusInput(cm);
|
|
if (webkit) window.scrollTo(null, oldScrollY);
|
|
resetInput(cm);
|
|
// Adds "Select all" to context menu in FF
|
|
if (!cm.somethingSelected()) display.input.value = display.prevInput = " ";
|
|
display.contextMenuPending = true;
|
|
display.selForContextMenu = cm.doc.sel;
|
|
clearTimeout(display.detectingSelectAll);
|
|
|
|
// Select-all will be greyed out if there's nothing to select, so
|
|
// this adds a zero-width space so that we can later check whether
|
|
// it got selected.
|
|
function prepareSelectAllHack() {
|
|
if (display.input.selectionStart != null) {
|
|
var selected = cm.somethingSelected();
|
|
var extval = display.input.value = "\u200b" + (selected ? display.input.value : "");
|
|
display.prevInput = selected ? "" : "\u200b";
|
|
display.input.selectionStart = 1; display.input.selectionEnd = extval.length;
|
|
// Re-set this, in case some other handler touched the
|
|
// selection in the meantime.
|
|
display.selForContextMenu = cm.doc.sel;
|
|
}
|
|
}
|
|
function rehide() {
|
|
display.contextMenuPending = false;
|
|
display.inputDiv.style.position = "relative";
|
|
display.input.style.cssText = oldCSS;
|
|
if (ie && ie_version < 9) display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos);
|
|
slowPoll(cm);
|
|
|
|
// Try to detect the user choosing select-all
|
|
if (display.input.selectionStart != null) {
|
|
if (!ie || (ie && ie_version < 9)) prepareSelectAllHack();
|
|
var i = 0, poll = function() {
|
|
if (display.selForContextMenu == cm.doc.sel && display.input.selectionStart == 0)
|
|
operation(cm, commands.selectAll)(cm);
|
|
else if (i++ < 10) display.detectingSelectAll = setTimeout(poll, 500);
|
|
else resetInput(cm);
|
|
};
|
|
display.detectingSelectAll = setTimeout(poll, 200);
|
|
}
|
|
}
|
|
|
|
if (ie && ie_version >= 9) prepareSelectAllHack();
|
|
if (captureRightClick) {
|
|
e_stop(e);
|
|
var mouseup = function() {
|
|
off(window, "mouseup", mouseup);
|
|
setTimeout(rehide, 20);
|
|
};
|
|
on(window, "mouseup", mouseup);
|
|
} else {
|
|
setTimeout(rehide, 50);
|
|
}
|
|
}
|
|
|
|
function contextMenuInGutter(cm, e) {
|
|
if (!hasHandler(cm, "gutterContextMenu")) return false;
|
|
return gutterEvent(cm, e, "gutterContextMenu", false, signal);
|
|
}
|
|
|
|
// UPDATING
|
|
|
|
// Compute the position of the end of a change (its 'to' property
|
|
// refers to the pre-change end).
|
|
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));
|
|
};
|
|
|
|
// Adjust a position to refer to the post-change position of the
|
|
// same text, or the end of the change if the change covers it.
|
|
function adjustForChange(pos, change) {
|
|
if (cmp(pos, change.from) < 0) return pos;
|
|
if (cmp(pos, change.to) <= 0) return changeEnd(change);
|
|
|
|
var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
|
|
if (pos.line == change.to.line) ch += changeEnd(change).ch - change.to.ch;
|
|
return Pos(line, ch);
|
|
}
|
|
|
|
function computeSelAfterChange(doc, change) {
|
|
var out = [];
|
|
for (var i = 0; i < doc.sel.ranges.length; i++) {
|
|
var range = doc.sel.ranges[i];
|
|
out.push(new Range(adjustForChange(range.anchor, change),
|
|
adjustForChange(range.head, change)));
|
|
}
|
|
return normalizeSelection(out, doc.sel.primIndex);
|
|
}
|
|
|
|
function offsetPos(pos, old, nw) {
|
|
if (pos.line == old.line)
|
|
return Pos(nw.line, pos.ch - old.ch + nw.ch);
|
|
else
|
|
return Pos(nw.line + (pos.line - old.line), pos.ch);
|
|
}
|
|
|
|
// Used by replaceSelections to allow moving the selection to the
|
|
// start or around the replaced test. Hint may be "start" or "around".
|
|
function computeReplacedSel(doc, changes, hint) {
|
|
var out = [];
|
|
var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;
|
|
for (var i = 0; i < changes.length; i++) {
|
|
var change = changes[i];
|
|
var from = offsetPos(change.from, oldPrev, newPrev);
|
|
var to = offsetPos(changeEnd(change), oldPrev, newPrev);
|
|
oldPrev = change.to;
|
|
newPrev = to;
|
|
if (hint == "around") {
|
|
var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;
|
|
out[i] = new Range(inv ? to : from, inv ? from : to);
|
|
} else {
|
|
out[i] = new Range(from, from);
|
|
}
|
|
}
|
|
return new Selection(out, doc.sel.primIndex);
|
|
}
|
|
|
|
// Allow "beforeChange" event handlers to influence a change
|
|
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};
|
|
}
|
|
|
|
// Apply a change to a document, and add it to the document's
|
|
// history, and propagating it to all linked documents.
|
|
function makeChange(doc, change, ignoreReadOnly) {
|
|
if (doc.cm) {
|
|
if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, 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 >= 0; --i)
|
|
makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text});
|
|
} else {
|
|
makeChangeInner(doc, change);
|
|
}
|
|
}
|
|
|
|
function makeChangeInner(doc, change) {
|
|
if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) return;
|
|
var selAfter = computeSelAfterChange(doc, change);
|
|
addChangeToHistory(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));
|
|
});
|
|
}
|
|
|
|
// Revert a change stored in a document's history.
|
|
function makeChangeFromHistory(doc, type, allowSelectionOnly) {
|
|
if (doc.cm && doc.cm.state.suppressEdits) return;
|
|
|
|
var hist = doc.history, event, selAfter = doc.sel;
|
|
var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;
|
|
|
|
// Verify that there is a useable event (so that ctrl-z won't
|
|
// needlessly clear selection events)
|
|
for (var i = 0; i < source.length; i++) {
|
|
event = source[i];
|
|
if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
|
|
break;
|
|
}
|
|
if (i == source.length) return;
|
|
hist.lastOrigin = hist.lastSelOrigin = null;
|
|
|
|
for (;;) {
|
|
event = source.pop();
|
|
if (event.ranges) {
|
|
pushSelectionToHistory(event, dest);
|
|
if (allowSelectionOnly && !event.equals(doc.sel)) {
|
|
setSelection(doc, event, {clearRedo: false});
|
|
return;
|
|
}
|
|
selAfter = event;
|
|
}
|
|
else break;
|
|
}
|
|
|
|
// Build up a reverse change object to add to the opposite history
|
|
// stack (redo when undoing, and vice versa).
|
|
var antiChanges = [];
|
|
pushSelectionToHistory(selAfter, dest);
|
|
dest.push({changes: antiChanges, generation: hist.generation});
|
|
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)) {
|
|
source.length = 0;
|
|
return;
|
|
}
|
|
|
|
antiChanges.push(historyChangeFromChange(doc, change));
|
|
|
|
var after = i ? computeSelAfterChange(doc, change) : lst(source);
|
|
makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
|
|
if (!i && doc.cm) doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)});
|
|
var rebased = [];
|
|
|
|
// Propagate to the linked documents
|
|
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));
|
|
});
|
|
}
|
|
}
|
|
|
|
// Sub-views need their line numbers shifted when text is added
|
|
// above or below them in the parent document.
|
|
function shiftDoc(doc, distance) {
|
|
if (distance == 0) return;
|
|
doc.first += distance;
|
|
doc.sel = new Selection(map(doc.sel.ranges, function(range) {
|
|
return new Range(Pos(range.anchor.line + distance, range.anchor.ch),
|
|
Pos(range.head.line + distance, range.head.ch));
|
|
}), doc.sel.primIndex);
|
|
if (doc.cm) {
|
|
regChange(doc.cm, doc.first, doc.first - distance, distance);
|
|
for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)
|
|
regLineChange(doc.cm, l, "gutter");
|
|
}
|
|
}
|
|
|
|
// More lower-level change function, handling only a single document
|
|
// (not linked ones).
|
|
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);
|
|
if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans);
|
|
else updateDoc(doc, change, spans);
|
|
setSelectionNoUndo(doc, selAfter, sel_dontScroll);
|
|
}
|
|
|
|
// Handle the interaction of a change to a document with the editor
|
|
// that this document is part of.
|
|
function makeChangeSingleDocInEditor(cm, change, spans) {
|
|
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(getLine(doc, from.line)));
|
|
doc.iter(checkWidthStart, to.line + 1, function(line) {
|
|
if (line == display.maxLine) {
|
|
recomputeMaxLength = true;
|
|
return true;
|
|
}
|
|
});
|
|
}
|
|
|
|
if (doc.sel.contains(change.from, change.to) > -1)
|
|
signalCursorActivity(cm);
|
|
|
|
updateDoc(doc, change, spans, estimateHeight(cm));
|
|
|
|
if (!cm.options.lineWrapping) {
|
|
doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
|
|
var len = lineLength(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
|
|
if (change.full)
|
|
regChange(cm);
|
|
else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
|
|
regLineChange(cm, from.line, "text");
|
|
else
|
|
regChange(cm, from.line, to.line + 1, lendiff);
|
|
|
|
var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change");
|
|
if (changeHandler || changesHandler) {
|
|
var obj = {
|
|
from: from, to: to,
|
|
text: change.text,
|
|
removed: change.removed,
|
|
origin: change.origin
|
|
};
|
|
if (changeHandler) signalLater(cm, "change", cm, obj);
|
|
if (changesHandler) (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj);
|
|
}
|
|
cm.display.selForContextMenu = null;
|
|
}
|
|
|
|
function replaceRange(doc, code, from, to, origin) {
|
|
if (!to) to = from;
|
|
if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp; }
|
|
if (typeof code == "string") code = splitLines(code);
|
|
makeChange(doc, {from: from, to: to, text: code, origin: origin});
|
|
}
|
|
|
|
// SCROLLING THINGS INTO VIEW
|
|
|
|
// If an editor sits on the top or bottom of the window, partially
|
|
// scrolled out of view, this ensures that the cursor is visible.
|
|
function maybeScrollWindow(cm, coords) {
|
|
if (signalDOMEvent(cm, "scrollCursorIntoView")) return;
|
|
|
|
var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
|
|
if (coords.top + box.top < 0) doScroll = true;
|
|
else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
|
|
if (doScroll != null && !phantom) {
|
|
var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " +
|
|
(coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " +
|
|
(coords.bottom - coords.top + scrollGap(cm) + display.barHeight) + "px; left: " +
|
|
coords.left + "px; width: 2px;");
|
|
cm.display.lineSpace.appendChild(scrollNode);
|
|
scrollNode.scrollIntoView(doScroll);
|
|
cm.display.lineSpace.removeChild(scrollNode);
|
|
}
|
|
}
|
|
|
|
// Scroll a given position into view (immediately), verifying that
|
|
// it actually became visible (as line heights are accurately
|
|
// measured, the position of something may 'drift' during drawing).
|
|
function scrollPosIntoView(cm, pos, end, margin) {
|
|
if (margin == null) margin = 0;
|
|
for (var limit = 0; limit < 5; limit++) {
|
|
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) break;
|
|
}
|
|
return coords;
|
|
}
|
|
|
|
// Scroll a given set of coordinates into view (immediately).
|
|
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);
|
|
}
|
|
|
|
// Calculate a new scroll position needed to scroll the given
|
|
// rectangle into view. Returns an object with scrollTop and
|
|
// scrollLeft properties. When these are undefined, the
|
|
// vertical/horizontal position does not need to be adjusted.
|
|
function calculateScrollPos(cm, x1, y1, x2, y2) {
|
|
var display = cm.display, snapMargin = textHeight(cm.display);
|
|
if (y1 < 0) y1 = 0;
|
|
var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
|
|
var screen = displayHeight(cm), result = {};
|
|
if (y2 - y1 > screen) y2 = y1 + screen;
|
|
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 screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;
|
|
var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0);
|
|
var tooWide = x2 - x1 > screenw;
|
|
if (tooWide) x2 = x1 + screenw;
|
|
if (x1 < 10)
|
|
result.scrollLeft = 0;
|
|
else if (x1 < screenleft)
|
|
result.scrollLeft = Math.max(0, x1 - (tooWide ? 0 : 10));
|
|
else if (x2 > screenw + screenleft - 3)
|
|
result.scrollLeft = x2 + (tooWide ? 0 : 10) - screenw;
|
|
return result;
|
|
}
|
|
|
|
// Store a relative adjustment to the scroll position in the current
|
|
// operation (to be applied when the operation finishes).
|
|
function addToScrollPos(cm, left, top) {
|
|
if (left != null || top != null) resolveScrollToPos(cm);
|
|
if (left != null)
|
|
cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left;
|
|
if (top != null)
|
|
cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;
|
|
}
|
|
|
|
// Make sure that at the end of the operation the current cursor is
|
|
// shown.
|
|
function ensureCursorVisible(cm) {
|
|
resolveScrollToPos(cm);
|
|
var cur = cm.getCursor(), from = cur, to = cur;
|
|
if (!cm.options.lineWrapping) {
|
|
from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur;
|
|
to = Pos(cur.line, cur.ch + 1);
|
|
}
|
|
cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true};
|
|
}
|
|
|
|
// When an operation has its scrollToPos property set, and another
|
|
// scroll action is applied before the end of the operation, this
|
|
// 'simulates' scrolling that position into view in a cheap way, so
|
|
// that the effect of intermediate scroll commands is not ignored.
|
|
function resolveScrollToPos(cm) {
|
|
var range = cm.curOp.scrollToPos;
|
|
if (range) {
|
|
cm.curOp.scrollToPos = null;
|
|
var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);
|
|
var sPos = calculateScrollPos(cm, Math.min(from.left, to.left),
|
|
Math.min(from.top, to.top) - range.margin,
|
|
Math.max(from.right, to.right),
|
|
Math.max(from.bottom, to.bottom) + range.margin);
|
|
cm.scrollTo(sPos.scrollLeft, sPos.scrollTop);
|
|
}
|
|
}
|
|
|
|
// API UTILITIES
|
|
|
|
// Indent the given line. The how parameter can be "smart",
|
|
// "add"/null, "subtract", or "prev". When aggressive is false
|
|
// (typically set to true for forced single-line indents), empty
|
|
// lines are not indented, and places where the mode returns Pass
|
|
// are left alone.
|
|
function indentLine(cm, n, how, aggressive) {
|
|
var doc = cm.doc, state;
|
|
if (how == null) how = "add";
|
|
if (how == "smart") {
|
|
// Fall back to "prev" when the mode doesn't have an indentation
|
|
// method.
|
|
if (!doc.mode.indent) how = "prev";
|
|
else state = getStateBefore(cm, n);
|
|
}
|
|
|
|
var tabSize = cm.options.tabSize;
|
|
var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
|
|
if (line.stateAfter) line.stateAfter = null;
|
|
var curSpaceString = line.text.match(/^\s*/)[0], indentation;
|
|
if (!aggressive && !/\S/.test(line.text)) {
|
|
indentation = 0;
|
|
how = "not";
|
|
} else if (how == "smart") {
|
|
indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
|
|
if (indentation == Pass || indentation > 150) {
|
|
if (!aggressive) return;
|
|
how = "prev";
|
|
}
|
|
}
|
|
if (how == "prev") {
|
|
if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
|
|
else indentation = 0;
|
|
} else if (how == "add") {
|
|
indentation = curSpace + cm.options.indentUnit;
|
|
} else if (how == "subtract") {
|
|
indentation = curSpace - cm.options.indentUnit;
|
|
} else if (typeof how == "number") {
|
|
indentation = curSpace + how;
|
|
}
|
|
indentation = Math.max(0, indentation);
|
|
|
|
var indentString = "", pos = 0;
|
|
if (cm.options.indentWithTabs)
|
|
for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
|
|
if (pos < indentation) indentString += spaceStr(indentation - pos);
|
|
|
|
if (indentString != curSpaceString) {
|
|
replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
|
|
} else {
|
|
// Ensure that, if the cursor was in the whitespace at the start
|
|
// of the line, it is moved to the end of that space.
|
|
for (var i = 0; i < doc.sel.ranges.length; i++) {
|
|
var range = doc.sel.ranges[i];
|
|
if (range.head.line == n && range.head.ch < curSpaceString.length) {
|
|
var pos = Pos(n, curSpaceString.length);
|
|
replaceOneSelection(doc, i, new Range(pos, pos));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
line.stateAfter = null;
|
|
}
|
|
|
|
// Utility for applying a change to a line by handle or number,
|
|
// returning the number and optionally registering the line as
|
|
// changed.
|
|
function changeLine(doc, handle, changeType, op) {
|
|
var no = handle, line = handle;
|
|
if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
|
|
else no = lineNo(handle);
|
|
if (no == null) return null;
|
|
if (op(line, no) && doc.cm) regLineChange(doc.cm, no, changeType);
|
|
return line;
|
|
}
|
|
|
|
// Helper for deleting text near the selection(s), used to implement
|
|
// backspace, delete, and similar functionality.
|
|
function deleteNearSelection(cm, compute) {
|
|
var ranges = cm.doc.sel.ranges, kill = [];
|
|
// Build up a set of ranges to kill first, merging overlapping
|
|
// ranges.
|
|
for (var i = 0; i < ranges.length; i++) {
|
|
var toKill = compute(ranges[i]);
|
|
while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
|
|
var replaced = kill.pop();
|
|
if (cmp(replaced.from, toKill.from) < 0) {
|
|
toKill.from = replaced.from;
|
|
break;
|
|
}
|
|
}
|
|
kill.push(toKill);
|
|
}
|
|
// Next, remove those actual ranges.
|
|
runInOp(cm, function() {
|
|
for (var i = kill.length - 1; i >= 0; i--)
|
|
replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete");
|
|
ensureCursorVisible(cm);
|
|
});
|
|
}
|
|
|
|
// Used for horizontal relative motion. Dir is -1 or 1 (left or
|
|
// right), unit can be "char", "column" (like char, but doesn't
|
|
// cross line boundaries), "word" (across next word), or "group" (to
|
|
// the start of next group of word or non-word-non-whitespace
|
|
// chars). The visually param controls whether, in right-to-left
|
|
// text, direction 1 means to move towards the next index in the
|
|
// string, or towards the character to the right of the current
|
|
// position. The resulting position will have a hitSide=true
|
|
// property if it reached the end of the document.
|
|
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";
|
|
var helper = doc.cm && doc.cm.getHelper(pos, "wordChars");
|
|
for (var first = true;; first = false) {
|
|
if (dir < 0 && !moveOnce(!first)) break;
|
|
var cur = lineObj.text.charAt(ch) || "\n";
|
|
var type = isWordChar(cur, helper) ? "w"
|
|
: group && cur == "\n" ? "n"
|
|
: !group || /\s/.test(cur) ? null
|
|
: "p";
|
|
if (group && !first && !type) type = "s";
|
|
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;
|
|
}
|
|
|
|
// For relative vertical movement. Dir may be -1 or 1. Unit can be
|
|
// "page" or "line". The resulting position will have a hitSide=true
|
|
// property if it reached the end of the document.
|
|
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;
|
|
}
|
|
|
|
// EDITOR METHODS
|
|
|
|
// The publicly visible API. Note that methodOp(f) means
|
|
// 'wrap f in an operation, performed on its `this` parameter'.
|
|
|
|
// This is not the complete set of editor methods. Most of the
|
|
// methods defined on the Doc type are also injected into
|
|
// CodeMirror.prototype, for backwards compatibility and
|
|
// convenience.
|
|
|
|
CodeMirror.prototype = {
|
|
constructor: CodeMirror,
|
|
focus: function(){window.focus(); focusInput(this); fastPoll(this);},
|
|
|
|
setOption: function(option, value) {
|
|
var options = this.options, old = options[option];
|
|
if (options[option] == value && option != "mode") return;
|
|
options[option] = value;
|
|
if (optionHandlers.hasOwnProperty(option))
|
|
operation(this, optionHandlers[option])(this, value, old);
|
|
},
|
|
|
|
getOption: function(option) {return this.options[option];},
|
|
getDoc: function() {return this.doc;},
|
|
|
|
addKeyMap: function(map, bottom) {
|
|
this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map));
|
|
},
|
|
removeKeyMap: function(map) {
|
|
var maps = this.state.keyMaps;
|
|
for (var i = 0; i < maps.length; ++i)
|
|
if (maps[i] == map || maps[i].name == map) {
|
|
maps.splice(i, 1);
|
|
return true;
|
|
}
|
|
},
|
|
|
|
addOverlay: methodOp(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: methodOp(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: methodOp(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: methodOp(function(how) {
|
|
var ranges = this.doc.sel.ranges, end = -1;
|
|
for (var i = 0; i < ranges.length; i++) {
|
|
var range = ranges[i];
|
|
if (!range.empty()) {
|
|
var from = range.from(), to = range.to();
|
|
var start = Math.max(end, from.line);
|
|
end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
|
|
for (var j = start; j < end; ++j)
|
|
indentLine(this, j, how);
|
|
var newRanges = this.doc.sel.ranges;
|
|
if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
|
|
replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll);
|
|
} else if (range.head.line > end) {
|
|
indentLine(this, range.head.line, how, true);
|
|
end = range.head.line;
|
|
if (i == this.doc.sel.primIndex) ensureCursorVisible(this);
|
|
}
|
|
}
|
|
}),
|
|
|
|
// 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) {
|
|
return takeToken(this, pos, precise);
|
|
},
|
|
|
|
getLineTokens: function(line, precise) {
|
|
return takeToken(this, Pos(line), precise, true);
|
|
},
|
|
|
|
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;
|
|
var type;
|
|
if (ch == 0) type = styles[2];
|
|
else 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 { type = styles[mid * 2 + 2]; break; }
|
|
}
|
|
var cut = type ? type.indexOf("cm-overlay ") : -1;
|
|
return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1);
|
|
},
|
|
|
|
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) {
|
|
return this.getHelpers(pos, type)[0];
|
|
},
|
|
|
|
getHelpers: function(pos, type) {
|
|
var found = [];
|
|
if (!helpers.hasOwnProperty(type)) return helpers;
|
|
var help = helpers[type], mode = this.getModeAt(pos);
|
|
if (typeof mode[type] == "string") {
|
|
if (help[mode[type]]) found.push(help[mode[type]]);
|
|
} else if (mode[type]) {
|
|
for (var i = 0; i < mode[type].length; i++) {
|
|
var val = help[mode[type][i]];
|
|
if (val) found.push(val);
|
|
}
|
|
} else if (mode.helperType && help[mode.helperType]) {
|
|
found.push(help[mode.helperType]);
|
|
} else if (help[mode.name]) {
|
|
found.push(help[mode.name]);
|
|
}
|
|
for (var i = 0; i < help._global.length; i++) {
|
|
var cur = help._global[i];
|
|
if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
|
|
found.push(cur.val);
|
|
}
|
|
return found;
|
|
},
|
|
|
|
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, range = this.doc.sel.primary();
|
|
if (start == null) pos = range.head;
|
|
else if (typeof start == "object") pos = clipPos(this.doc, start);
|
|
else pos = start ? range.from() : range.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, lineObj, {top: 0, left: 0}, mode || "page").top +
|
|
(end ? this.doc.height - heightAtLine(lineObj) : 0);
|
|
},
|
|
|
|
defaultTextHeight: function() { return textHeight(this.display); },
|
|
defaultCharWidth: function() { return charWidth(this.display); },
|
|
|
|
setGutterMarker: methodOp(function(line, gutterID, value) {
|
|
return changeLine(this.doc, line, "gutter", function(line) {
|
|
var markers = line.gutterMarkers || (line.gutterMarkers = {});
|
|
markers[gutterID] = value;
|
|
if (!value && isEmpty(markers)) line.gutterMarkers = null;
|
|
return true;
|
|
});
|
|
}),
|
|
|
|
clearGutter: methodOp(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;
|
|
regLineChange(cm, i, "gutter");
|
|
if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
|
|
}
|
|
++i;
|
|
});
|
|
}),
|
|
|
|
addLineWidget: methodOp(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.viewFrom, to: this.display.viewTo};},
|
|
|
|
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";
|
|
node.setAttribute("cm-ignore-events", "true");
|
|
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: methodOp(onKeyDown),
|
|
triggerOnKeyPress: methodOp(onKeyPress),
|
|
triggerOnKeyUp: onKeyUp,
|
|
|
|
execCommand: function(cmd) {
|
|
if (commands.hasOwnProperty(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: methodOp(function(dir, unit) {
|
|
var cm = this;
|
|
cm.extendSelectionsBy(function(range) {
|
|
if (cm.display.shift || cm.doc.extend || range.empty())
|
|
return findPosH(cm.doc, range.head, dir, unit, cm.options.rtlMoveVisually);
|
|
else
|
|
return dir < 0 ? range.from() : range.to();
|
|
}, sel_move);
|
|
}),
|
|
|
|
deleteH: methodOp(function(dir, unit) {
|
|
var sel = this.doc.sel, doc = this.doc;
|
|
if (sel.somethingSelected())
|
|
doc.replaceSelection("", null, "+delete");
|
|
else
|
|
deleteNearSelection(this, function(range) {
|
|
var other = findPosH(doc, range.head, dir, unit, false);
|
|
return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other};
|
|
});
|
|
}),
|
|
|
|
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: methodOp(function(dir, unit) {
|
|
var cm = this, doc = this.doc, goals = [];
|
|
var collapse = !cm.display.shift && !doc.extend && doc.sel.somethingSelected();
|
|
doc.extendSelectionsBy(function(range) {
|
|
if (collapse)
|
|
return dir < 0 ? range.from() : range.to();
|
|
var headPos = cursorCoords(cm, range.head, "div");
|
|
if (range.goalColumn != null) headPos.left = range.goalColumn;
|
|
goals.push(headPos.left);
|
|
var pos = findPosV(cm, headPos, dir, unit);
|
|
if (unit == "page" && range == doc.sel.primary())
|
|
addToScrollPos(cm, null, charCoords(cm, pos, "div").top - headPos.top);
|
|
return pos;
|
|
}, sel_move);
|
|
if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++)
|
|
doc.sel.ranges[i].goalColumn = goals[i];
|
|
}),
|
|
|
|
// Find the word at the given position (as returned by coordsChar).
|
|
findWordAt: function(pos) {
|
|
var doc = this.doc, line = getLine(doc, pos.line).text;
|
|
var start = pos.ch, end = pos.ch;
|
|
if (line) {
|
|
var helper = this.getHelper(pos, "wordChars");
|
|
if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end;
|
|
var startChar = line.charAt(start);
|
|
var check = isWordChar(startChar, helper)
|
|
? function(ch) { return isWordChar(ch, helper); }
|
|
: /\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 new Range(Pos(pos.line, start), Pos(pos.line, end));
|
|
},
|
|
|
|
toggleOverwrite: function(value) {
|
|
if (value != null && value == this.state.overwrite) return;
|
|
if (this.state.overwrite = !this.state.overwrite)
|
|
addClass(this.display.cursorDiv, "CodeMirror-overwrite");
|
|
else
|
|
rmClass(this.display.cursorDiv, "CodeMirror-overwrite");
|
|
|
|
signal(this, "overwriteToggle", this, this.state.overwrite);
|
|
},
|
|
hasFocus: function() { return activeElt() == this.display.input; },
|
|
|
|
scrollTo: methodOp(function(x, y) {
|
|
if (x != null || y != null) resolveScrollToPos(this);
|
|
if (x != null) this.curOp.scrollLeft = x;
|
|
if (y != null) this.curOp.scrollTop = y;
|
|
}),
|
|
getScrollInfo: function() {
|
|
var scroller = this.display.scroller;
|
|
return {left: scroller.scrollLeft, top: scroller.scrollTop,
|
|
height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,
|
|
width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,
|
|
clientHeight: displayHeight(this), clientWidth: displayWidth(this)};
|
|
},
|
|
|
|
scrollIntoView: methodOp(function(range, margin) {
|
|
if (range == null) {
|
|
range = {from: this.doc.sel.primary().head, to: null};
|
|
if (margin == null) margin = this.options.cursorScrollMargin;
|
|
} 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;
|
|
range.margin = margin || 0;
|
|
|
|
if (range.from.line != null) {
|
|
resolveScrollToPos(this);
|
|
this.curOp.scrollToPos = range;
|
|
} else {
|
|
var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left),
|
|
Math.min(range.from.top, range.to.top) - range.margin,
|
|
Math.max(range.from.right, range.to.right),
|
|
Math.max(range.from.bottom, range.to.bottom) + range.margin);
|
|
this.scrollTo(sPos.scrollLeft, sPos.scrollTop);
|
|
}
|
|
}),
|
|
|
|
setSize: methodOp(function(width, height) {
|
|
var cm = this;
|
|
function interpret(val) {
|
|
return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
|
|
}
|
|
if (width != null) cm.display.wrapper.style.width = interpret(width);
|
|
if (height != null) cm.display.wrapper.style.height = interpret(height);
|
|
if (cm.options.lineWrapping) clearLineMeasurementCache(this);
|
|
var lineNo = cm.display.viewFrom;
|
|
cm.doc.iter(lineNo, cm.display.viewTo, function(line) {
|
|
if (line.widgets) for (var i = 0; i < line.widgets.length; i++)
|
|
if (line.widgets[i].noHScroll) { regLineChange(cm, lineNo, "widget"); break; }
|
|
++lineNo;
|
|
});
|
|
cm.curOp.forceUpdate = true;
|
|
signal(cm, "refresh", this);
|
|
}),
|
|
|
|
operation: function(f){return runInOp(this, f);},
|
|
|
|
refresh: methodOp(function() {
|
|
var oldHeight = this.display.cachedTextHeight;
|
|
regChange(this);
|
|
this.curOp.forceUpdate = true;
|
|
clearCaches(this);
|
|
this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop);
|
|
updateGutterSpace(this);
|
|
if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)
|
|
estimateLineHeights(this);
|
|
signal(this, "refresh", this);
|
|
}),
|
|
|
|
swapDoc: methodOp(function(doc) {
|
|
var old = this.doc;
|
|
old.cm = null;
|
|
attachDoc(this, doc);
|
|
clearCaches(this);
|
|
resetInput(this);
|
|
this.scrollTo(doc.scrollLeft, doc.scrollTop);
|
|
this.curOp.forceScroll = true;
|
|
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
|
|
|
|
// The default configuration options.
|
|
var defaults = CodeMirror.defaults = {};
|
|
// Functions to run when options are changed.
|
|
var optionHandlers = CodeMirror.optionHandlers = {};
|
|
|
|
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;
|
|
}
|
|
|
|
// Passed to option handlers when there is no old value.
|
|
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) {
|
|
resetModeState(cm);
|
|
clearCaches(cm);
|
|
regChange(cm);
|
|
}, true);
|
|
option("specialChars", /[\t\u0000-\u0019\u00ad\u200b-\u200f\u2028\u2029\ufeff]/g, function(cm, val) {
|
|
cm.options.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
|
|
cm.refresh();
|
|
}, true);
|
|
option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true);
|
|
option("electricChars", true);
|
|
option("rtlMoveVisually", !windows);
|
|
option("wholeLineUpdateBefore", true);
|
|
|
|
option("theme", "default", function(cm) {
|
|
themeChanged(cm);
|
|
guttersChanged(cm);
|
|
}, true);
|
|
option("keyMap", "default", function(cm, val, old) {
|
|
var next = getKeyMap(val);
|
|
var prev = old != CodeMirror.Init && getKeyMap(old);
|
|
if (prev && prev.detach) prev.detach(cm, next);
|
|
if (next.attach) next.attach(cm, prev || null);
|
|
});
|
|
option("extraKeys", 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, function(cm) {updateScrollbars(cm);}, true);
|
|
option("scrollbarStyle", "native", function(cm) {
|
|
initScrollbars(cm);
|
|
updateScrollbars(cm);
|
|
cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);
|
|
cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);
|
|
}, true);
|
|
option("lineNumbers", false, function(cm) {
|
|
setGuttersForLineNumbers(cm.options);
|
|
guttersChanged(cm);
|
|
}, true);
|
|
option("firstLineNumber", 1, guttersChanged, true);
|
|
option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true);
|
|
option("showCursorWhenSelecting", false, updateSelection, true);
|
|
|
|
option("resetSelectionOnContextMenu", true);
|
|
|
|
option("readOnly", false, function(cm, val) {
|
|
if (val == "nocursor") {
|
|
onBlur(cm);
|
|
cm.display.input.blur();
|
|
cm.display.disabled = true;
|
|
} else {
|
|
cm.display.disabled = false;
|
|
if (!val) resetInput(cm);
|
|
}
|
|
});
|
|
option("disableInput", false, function(cm, val) {if (!val) resetInput(cm);}, true);
|
|
option("dragDrop", true);
|
|
|
|
option("cursorBlinkRate", 530);
|
|
option("cursorScrollMargin", 0);
|
|
option("cursorHeight", 1, updateSelection, true);
|
|
option("singleCursorHeightPerLine", true, updateSelection, true);
|
|
option("workTime", 100);
|
|
option("workDelay", 100);
|
|
option("flattenSpans", true, resetModeState, true);
|
|
option("addModeClass", false, resetModeState, true);
|
|
option("pollInterval", 100);
|
|
option("undoDepth", 200, function(cm, val){cm.doc.history.undoDepth = val;});
|
|
option("historyEventDelay", 1250);
|
|
option("viewportMargin", 10, function(cm){cm.refresh();}, true);
|
|
option("maxHighlightLength", 10000, resetModeState, true);
|
|
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 = {};
|
|
|
|
// Extra arguments are stored as the mode's dependencies, which is
|
|
// used by (legacy) mechanisms like loadmode.js to automatically
|
|
// load a mode. (Preferred mechanism is the require/define calls.)
|
|
CodeMirror.defineMode = function(name, mode) {
|
|
if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
|
|
if (arguments.length > 2)
|
|
mode.dependencies = Array.prototype.slice.call(arguments, 2);
|
|
modes[name] = mode;
|
|
};
|
|
|
|
CodeMirror.defineMIME = function(mime, spec) {
|
|
mimeModes[mime] = spec;
|
|
};
|
|
|
|
// Given a MIME type, a {name, ...options} config object, or a name
|
|
// string, return a mode config object.
|
|
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];
|
|
if (typeof found == "string") found = {name: found};
|
|
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"};
|
|
};
|
|
|
|
// Given a mode spec (anything that resolveMode accepts), find and
|
|
// initialize an actual mode object.
|
|
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;
|
|
if (spec.helperType) modeObj.helperType = spec.helperType;
|
|
if (spec.modeProps) for (var prop in spec.modeProps)
|
|
modeObj[prop] = spec.modeProps[prop];
|
|
|
|
return modeObj;
|
|
};
|
|
|
|
// Minimal default mode.
|
|
CodeMirror.defineMode("null", function() {
|
|
return {token: function(stream) {stream.skipToEnd();}};
|
|
});
|
|
CodeMirror.defineMIME("text/plain", "null");
|
|
|
|
// This can be used to attach properties to mode objects from
|
|
// outside the actual mode definition.
|
|
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] = {_global: []};
|
|
helpers[type][name] = value;
|
|
};
|
|
CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
|
|
CodeMirror.registerHelper(type, name, value);
|
|
helpers[type]._global.push({pred: predicate, val: value});
|
|
};
|
|
|
|
// MODE STATE HANDLING
|
|
|
|
// Utility functions for working with state. Exported because nested
|
|
// modes need to do this for their inner modes.
|
|
|
|
var copyState = CodeMirror.copyState = function(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;
|
|
};
|
|
|
|
var startState = CodeMirror.startState = function(mode, a1, a2) {
|
|
return mode.startState ? mode.startState(a1, a2) : true;
|
|
};
|
|
|
|
// Given a mode and a state (for that mode), find the inner mode and
|
|
// state at the position that the state refers to.
|
|
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
|
|
|
|
// Commands are parameter-less actions that can be performed on an
|
|
// editor, mostly used for keybindings.
|
|
var commands = CodeMirror.commands = {
|
|
selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);},
|
|
singleSelection: function(cm) {
|
|
cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll);
|
|
},
|
|
killLine: function(cm) {
|
|
deleteNearSelection(cm, function(range) {
|
|
if (range.empty()) {
|
|
var len = getLine(cm.doc, range.head.line).text.length;
|
|
if (range.head.ch == len && range.head.line < cm.lastLine())
|
|
return {from: range.head, to: Pos(range.head.line + 1, 0)};
|
|
else
|
|
return {from: range.head, to: Pos(range.head.line, len)};
|
|
} else {
|
|
return {from: range.from(), to: range.to()};
|
|
}
|
|
});
|
|
},
|
|
deleteLine: function(cm) {
|
|
deleteNearSelection(cm, function(range) {
|
|
return {from: Pos(range.from().line, 0),
|
|
to: clipPos(cm.doc, Pos(range.to().line + 1, 0))};
|
|
});
|
|
},
|
|
delLineLeft: function(cm) {
|
|
deleteNearSelection(cm, function(range) {
|
|
return {from: Pos(range.from().line, 0), to: range.from()};
|
|
});
|
|
},
|
|
delWrappedLineLeft: function(cm) {
|
|
deleteNearSelection(cm, function(range) {
|
|
var top = cm.charCoords(range.head, "div").top + 5;
|
|
var leftPos = cm.coordsChar({left: 0, top: top}, "div");
|
|
return {from: leftPos, to: range.from()};
|
|
});
|
|
},
|
|
delWrappedLineRight: function(cm) {
|
|
deleteNearSelection(cm, function(range) {
|
|
var top = cm.charCoords(range.head, "div").top + 5;
|
|
var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
|
|
return {from: range.from(), to: rightPos };
|
|
});
|
|
},
|
|
undo: function(cm) {cm.undo();},
|
|
redo: function(cm) {cm.redo();},
|
|
undoSelection: function(cm) {cm.undoSelection();},
|
|
redoSelection: function(cm) {cm.redoSelection();},
|
|
goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},
|
|
goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},
|
|
goLineStart: function(cm) {
|
|
cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); },
|
|
{origin: "+move", bias: 1});
|
|
},
|
|
goLineStartSmart: function(cm) {
|
|
cm.extendSelectionsBy(function(range) {
|
|
return lineStartSmart(cm, range.head);
|
|
}, {origin: "+move", bias: 1});
|
|
},
|
|
goLineEnd: function(cm) {
|
|
cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); },
|
|
{origin: "+move", bias: -1});
|
|
},
|
|
goLineRight: function(cm) {
|
|
cm.extendSelectionsBy(function(range) {
|
|
var top = cm.charCoords(range.head, "div").top + 5;
|
|
return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
|
|
}, sel_move);
|
|
},
|
|
goLineLeft: function(cm) {
|
|
cm.extendSelectionsBy(function(range) {
|
|
var top = cm.charCoords(range.head, "div").top + 5;
|
|
return cm.coordsChar({left: 0, top: top}, "div");
|
|
}, sel_move);
|
|
},
|
|
goLineLeftSmart: function(cm) {
|
|
cm.extendSelectionsBy(function(range) {
|
|
var top = cm.charCoords(range.head, "div").top + 5;
|
|
var pos = cm.coordsChar({left: 0, top: top}, "div");
|
|
if (pos.ch < cm.getLine(pos.line).search(/\S/)) return lineStartSmart(cm, range.head);
|
|
return pos;
|
|
}, sel_move);
|
|
},
|
|
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");},
|
|
insertSoftTab: function(cm) {
|
|
var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;
|
|
for (var i = 0; i < ranges.length; i++) {
|
|
var pos = ranges[i].from();
|
|
var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);
|
|
spaces.push(new Array(tabSize - col % tabSize + 1).join(" "));
|
|
}
|
|
cm.replaceSelections(spaces);
|
|
},
|
|
defaultTab: function(cm) {
|
|
if (cm.somethingSelected()) cm.indentSelection("add");
|
|
else cm.execCommand("insertTab");
|
|
},
|
|
transposeChars: function(cm) {
|
|
runInOp(cm, function() {
|
|
var ranges = cm.listSelections(), newSel = [];
|
|
for (var i = 0; i < ranges.length; i++) {
|
|
var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;
|
|
if (line) {
|
|
if (cur.ch == line.length) cur = new Pos(cur.line, cur.ch - 1);
|
|
if (cur.ch > 0) {
|
|
cur = new Pos(cur.line, cur.ch + 1);
|
|
cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),
|
|
Pos(cur.line, cur.ch - 2), cur, "+transpose");
|
|
} else if (cur.line > cm.doc.first) {
|
|
var prev = getLine(cm.doc, cur.line - 1).text;
|
|
if (prev)
|
|
cm.replaceRange(line.charAt(0) + "\n" + prev.charAt(prev.length - 1),
|
|
Pos(cur.line - 1, prev.length - 1), Pos(cur.line, 1), "+transpose");
|
|
}
|
|
}
|
|
newSel.push(new Range(cur, cur));
|
|
}
|
|
cm.setSelections(newSel);
|
|
});
|
|
},
|
|
newlineAndIndent: function(cm) {
|
|
runInOp(cm, function() {
|
|
var len = cm.listSelections().length;
|
|
for (var i = 0; i < len; i++) {
|
|
var range = cm.listSelections()[i];
|
|
cm.replaceRange("\n", range.anchor, range.head, "+input");
|
|
cm.indentLine(range.from().line + 1, null, true);
|
|
ensureCursorVisible(cm);
|
|
}
|
|
});
|
|
},
|
|
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",
|
|
"Esc": "singleSelection"
|
|
};
|
|
// Note that the save and find-related commands aren't defined by
|
|
// default. User code or addons can define them. 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", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown",
|
|
"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",
|
|
"Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
|
|
fallthrough: "basic"
|
|
};
|
|
// Very basic readline/emacs-style bindings, which are standard on Mac.
|
|
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.macDefault = {
|
|
"Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
|
|
"Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
|
|
"Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "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": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight",
|
|
"Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd",
|
|
fallthrough: ["basic", "emacsy"]
|
|
};
|
|
keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
|
|
|
|
// KEYMAP DISPATCH
|
|
|
|
function normalizeKeyName(name) {
|
|
var parts = name.split(/-(?!$)/), name = parts[parts.length - 1];
|
|
var alt, ctrl, shift, cmd;
|
|
for (var i = 0; i < parts.length - 1; i++) {
|
|
var mod = parts[i];
|
|
if (/^(cmd|meta|m)$/i.test(mod)) cmd = true;
|
|
else if (/^a(lt)?$/i.test(mod)) alt = true;
|
|
else if (/^(c|ctrl|control)$/i.test(mod)) ctrl = true;
|
|
else if (/^s(hift)$/i.test(mod)) shift = true;
|
|
else throw new Error("Unrecognized modifier name: " + mod);
|
|
}
|
|
if (alt) name = "Alt-" + name;
|
|
if (ctrl) name = "Ctrl-" + name;
|
|
if (cmd) name = "Cmd-" + name;
|
|
if (shift) name = "Shift-" + name;
|
|
return name;
|
|
}
|
|
|
|
// This is a kludge to keep keymaps mostly working as raw objects
|
|
// (backwards compatibility) while at the same time support features
|
|
// like normalization and multi-stroke key bindings. It compiles a
|
|
// new normalized keymap, and then updates the old object to reflect
|
|
// this.
|
|
CodeMirror.normalizeKeyMap = function(keymap) {
|
|
var copy = {};
|
|
for (var keyname in keymap) if (keymap.hasOwnProperty(keyname)) {
|
|
var value = keymap[keyname];
|
|
if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) continue;
|
|
if (value == "...") { delete keymap[keyname]; continue; }
|
|
|
|
var keys = map(keyname.split(" "), normalizeKeyName);
|
|
for (var i = 0; i < keys.length; i++) {
|
|
var val, name;
|
|
if (i == keys.length - 1) {
|
|
name = keyname;
|
|
val = value;
|
|
} else {
|
|
name = keys.slice(0, i + 1).join(" ");
|
|
val = "...";
|
|
}
|
|
var prev = copy[name];
|
|
if (!prev) copy[name] = val;
|
|
else if (prev != val) throw new Error("Inconsistent bindings for " + name);
|
|
}
|
|
delete keymap[keyname];
|
|
}
|
|
for (var prop in copy) keymap[prop] = copy[prop];
|
|
return keymap;
|
|
};
|
|
|
|
var lookupKey = CodeMirror.lookupKey = function(key, map, handle, context) {
|
|
map = getKeyMap(map);
|
|
var found = map.call ? map.call(key, context) : map[key];
|
|
if (found === false) return "nothing";
|
|
if (found === "...") return "multi";
|
|
if (found != null && handle(found)) return "handled";
|
|
|
|
if (map.fallthrough) {
|
|
if (Object.prototype.toString.call(map.fallthrough) != "[object Array]")
|
|
return lookupKey(key, map.fallthrough, handle, context);
|
|
for (var i = 0; i < map.fallthrough.length; i++) {
|
|
var result = lookupKey(key, map.fallthrough[i], handle, context);
|
|
if (result) return result;
|
|
}
|
|
}
|
|
};
|
|
|
|
// Modifier key presses don't count as 'real' key presses for the
|
|
// purpose of keymap fallthrough.
|
|
var isModifierKey = CodeMirror.isModifierKey = function(value) {
|
|
var name = typeof value == "string" ? value : keyNames[value.keyCode];
|
|
return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
|
|
};
|
|
|
|
// Look up the name of a key as indicated by an event object.
|
|
var keyName = CodeMirror.keyName = function(event, noShift) {
|
|
if (presto && event.keyCode == 34 && event["char"]) return false;
|
|
var base = keyNames[event.keyCode], name = base;
|
|
if (name == null || event.altGraphKey) return false;
|
|
if (event.altKey && base != "Alt") name = "Alt-" + name;
|
|
if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") name = "Ctrl-" + name;
|
|
if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") name = "Cmd-" + name;
|
|
if (!noShift && event.shiftKey && base != "Shift") name = "Shift-" + name;
|
|
return name;
|
|
};
|
|
|
|
function getKeyMap(val) {
|
|
return typeof val == "string" ? keyMap[val] : val;
|
|
}
|
|
|
|
// FROMTEXTAREA
|
|
|
|
CodeMirror.fromTextArea = function(textarea, options) {
|
|
options = options ? copyObj(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 = activeElt();
|
|
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) {}
|
|
}
|
|
}
|
|
|
|
options.finishInit = function(cm) {
|
|
cm.save = save;
|
|
cm.getTextArea = function() { return textarea; };
|
|
cm.toTextArea = function() {
|
|
cm.toTextArea = isNaN; // Prevent this from being ran twice
|
|
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;
|
|
}
|
|
};
|
|
};
|
|
|
|
textarea.style.display = "none";
|
|
var cm = CodeMirror(function(node) {
|
|
textarea.parentNode.insertBefore(node, textarea.nextSibling);
|
|
}, options);
|
|
return cm;
|
|
};
|
|
|
|
// STRING STREAM
|
|
|
|
// Fed to the mode parsers, provides helper functions to make
|
|
// parsers more succinct.
|
|
|
|
var StringStream = CodeMirror.StringStream = function(string, tabSize) {
|
|
this.pos = this.start = 0;
|
|
this.string = string;
|
|
this.tabSize = tabSize || 8;
|
|
this.lastColumnPos = this.lastColumnValue = 0;
|
|
this.lineStart = 0;
|
|
};
|
|
|
|
StringStream.prototype = {
|
|
eol: function() {return this.pos >= this.string.length;},
|
|
sol: function() {return this.pos == this.lineStart;},
|
|
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 - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
|
|
},
|
|
indentation: function() {
|
|
return countColumn(this.string, null, this.tabSize) -
|
|
(this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
|
|
},
|
|
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);},
|
|
hideFirstChars: function(n, inner) {
|
|
this.lineStart += n;
|
|
try { return inner(); }
|
|
finally { this.lineStart -= n; }
|
|
}
|
|
};
|
|
|
|
// TEXTMARKERS
|
|
|
|
// Created with markText and setBookmark methods. A TextMarker is a
|
|
// handle that can be used to clear or find a marked position in the
|
|
// document. Line objects hold arrays (markedSpans) containing
|
|
// {from, to, marker} object pointing to such marker objects, and
|
|
// indicating that such a marker is present on that line. Multiple
|
|
// lines may point to the same marker when it spans across lines.
|
|
// The spans will have null for their from/to properties when the
|
|
// marker continues beyond the start/end of the line. Markers have
|
|
// links back to the lines they currently touch.
|
|
|
|
var TextMarker = CodeMirror.TextMarker = function(doc, type) {
|
|
this.lines = [];
|
|
this.type = type;
|
|
this.doc = doc;
|
|
};
|
|
eventMixin(TextMarker);
|
|
|
|
// Clear the marker.
|
|
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 (cm && !this.collapsed) regLineChange(cm, lineNo(line), "text");
|
|
else if (cm) {
|
|
if (span.to != null) max = lineNo(line);
|
|
if (span.from != null) min = lineNo(line);
|
|
}
|
|
line.markedSpans = removeMarkedSpan(line.markedSpans, span);
|
|
if (span.from == null && 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(this.lines[i]), len = lineLength(visual);
|
|
if (len > cm.display.maxLineLength) {
|
|
cm.display.maxLine = visual;
|
|
cm.display.maxLineLength = len;
|
|
cm.display.maxLineChanged = true;
|
|
}
|
|
}
|
|
|
|
if (min != null && cm && this.collapsed) 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.doc);
|
|
}
|
|
if (cm) signalLater(cm, "markerCleared", cm, this);
|
|
if (withOp) endOperation(cm);
|
|
if (this.parent) this.parent.clear();
|
|
};
|
|
|
|
// Find the position of the marker in the document. Returns a {from,
|
|
// to} object by default. Side can be passed to get a specific side
|
|
// -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
|
|
// Pos objects returned contain a line object, rather than a line
|
|
// number (used to prevent looking up the same line twice).
|
|
TextMarker.prototype.find = function(side, lineObj) {
|
|
if (side == null && this.type == "bookmark") side = 1;
|
|
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) {
|
|
from = Pos(lineObj ? line : lineNo(line), span.from);
|
|
if (side == -1) return from;
|
|
}
|
|
if (span.to != null) {
|
|
to = Pos(lineObj ? line : lineNo(line), span.to);
|
|
if (side == 1) return to;
|
|
}
|
|
}
|
|
return from && {from: from, to: to};
|
|
};
|
|
|
|
// Signals that the marker's widget changed, and surrounding layout
|
|
// should be recomputed.
|
|
TextMarker.prototype.changed = function() {
|
|
var pos = this.find(-1, true), widget = this, cm = this.doc.cm;
|
|
if (!pos || !cm) return;
|
|
runInOp(cm, function() {
|
|
var line = pos.line, lineN = lineNo(pos.line);
|
|
var view = findViewForLine(cm, lineN);
|
|
if (view) {
|
|
clearLineMeasurementCacheFor(view);
|
|
cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
|
|
}
|
|
cm.curOp.updateMaxLine = true;
|
|
if (!lineIsHidden(widget.doc, line) && widget.height != null) {
|
|
var oldHeight = widget.height;
|
|
widget.height = null;
|
|
var dHeight = widgetHeight(widget) - oldHeight;
|
|
if (dHeight)
|
|
updateLineHeight(line, line.height + dHeight);
|
|
}
|
|
});
|
|
};
|
|
|
|
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);
|
|
}
|
|
};
|
|
|
|
// Collapsed markers have unique ids, in order to be able to order
|
|
// them, which is needed for uniquely determining an outer marker
|
|
// when they overlap (they may nest, but not partially overlap).
|
|
var nextMarkerId = 0;
|
|
|
|
// Create a marker, wire it up to the right lines, and
|
|
function markText(doc, from, to, options, type) {
|
|
// Shared markers (across linked documents) are handled separately
|
|
// (markTextShared will call out to this again, once per
|
|
// document).
|
|
if (options && options.shared) return markTextShared(doc, from, to, options, type);
|
|
// Ensure we are in an operation.
|
|
if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);
|
|
|
|
var marker = new TextMarker(doc, type), diff = cmp(from, to);
|
|
if (options) copyObj(options, marker, false);
|
|
// Don't connect empty markers unless clearWhenEmpty is false
|
|
if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)
|
|
return marker;
|
|
if (marker.replacedWith) {
|
|
// Showing up as a widget implies collapsed (widget replaces text)
|
|
marker.collapsed = true;
|
|
marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget");
|
|
if (!options.handleMouseEvents) marker.widgetNode.setAttribute("cm-ignore-events", "true");
|
|
if (options.insertLeft) marker.widgetNode.insertLeft = true;
|
|
}
|
|
if (marker.collapsed) {
|
|
if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
|
|
from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
|
|
throw new Error("Inserting collapsed marker partially overlapping an existing one");
|
|
sawCollapsedSpans = true;
|
|
}
|
|
|
|
if (marker.addToHistory)
|
|
addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN);
|
|
|
|
var curLine = from.line, cm = doc.cm, updateMaxLine;
|
|
doc.iter(curLine, to.line + 1, function(line) {
|
|
if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
|
|
updateMaxLine = true;
|
|
if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0);
|
|
addMarkedSpan(line, new MarkedSpan(marker,
|
|
curLine == from.line ? from.ch : null,
|
|
curLine == to.line ? to.ch : null));
|
|
++curLine;
|
|
});
|
|
// lineIsHidden depends on the presence of the spans, so needs a second pass
|
|
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) {
|
|
marker.id = ++nextMarkerId;
|
|
marker.atomic = true;
|
|
}
|
|
if (cm) {
|
|
// Sync editor state
|
|
if (updateMaxLine) cm.curOp.updateMaxLine = true;
|
|
if (marker.collapsed)
|
|
regChange(cm, from.line, to.line + 1);
|
|
else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css)
|
|
for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text");
|
|
if (marker.atomic) reCheckSelection(cm.doc);
|
|
signalLater(cm, "markerAdded", cm, marker);
|
|
}
|
|
return marker;
|
|
}
|
|
|
|
// SHARED TEXTMARKERS
|
|
|
|
// A shared marker spans multiple linked documents. It is
|
|
// implemented as a meta-marker-object controlling multiple normal
|
|
// markers.
|
|
var SharedTextMarker = CodeMirror.SharedTextMarker = function(markers, primary) {
|
|
this.markers = markers;
|
|
this.primary = primary;
|
|
for (var i = 0; i < markers.length; ++i)
|
|
markers[i].parent = this;
|
|
};
|
|
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(side, lineObj) {
|
|
return this.primary.find(side, lineObj);
|
|
};
|
|
|
|
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.widgetNode;
|
|
linkedDocs(doc, function(doc) {
|
|
if (widget) options.widgetNode = 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);
|
|
}
|
|
|
|
function findSharedMarkers(doc) {
|
|
return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())),
|
|
function(m) { return m.parent; });
|
|
}
|
|
|
|
function copySharedMarkers(doc, markers) {
|
|
for (var i = 0; i < markers.length; i++) {
|
|
var marker = markers[i], pos = marker.find();
|
|
var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);
|
|
if (cmp(mFrom, mTo)) {
|
|
var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);
|
|
marker.markers.push(subMark);
|
|
subMark.parent = marker;
|
|
}
|
|
}
|
|
}
|
|
|
|
function detachSharedMarkers(markers) {
|
|
for (var i = 0; i < markers.length; i++) {
|
|
var marker = markers[i], linked = [marker.primary.doc];;
|
|
linkedDocs(marker.primary.doc, function(d) { linked.push(d); });
|
|
for (var j = 0; j < marker.markers.length; j++) {
|
|
var subMarker = marker.markers[j];
|
|
if (indexOf(linked, subMarker.doc) == -1) {
|
|
subMarker.parent = null;
|
|
marker.markers.splice(j--, 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// TEXTMARKER SPANS
|
|
|
|
function MarkedSpan(marker, from, to) {
|
|
this.marker = marker;
|
|
this.from = from; this.to = to;
|
|
}
|
|
|
|
// Search an array of spans for a span matching the given marker.
|
|
function getMarkedSpanFor(spans, marker) {
|
|
if (spans) for (var i = 0; i < spans.length; ++i) {
|
|
var span = spans[i];
|
|
if (span.marker == marker) return span;
|
|
}
|
|
}
|
|
// Remove a span from an array, returning undefined if no spans are
|
|
// left (we don't store arrays for lines without spans).
|
|
function removeMarkedSpan(spans, span) {
|
|
for (var r, i = 0; i < spans.length; ++i)
|
|
if (spans[i] != span) (r || (r = [])).push(spans[i]);
|
|
return r;
|
|
}
|
|
// Add a span to a line.
|
|
function addMarkedSpan(line, span) {
|
|
line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
|
|
span.marker.attachLine(line);
|
|
}
|
|
|
|
// Used for the algorithm that adjusts markers for a change in the
|
|
// document. These functions cut an array of spans at a given
|
|
// character position, returning an array of remaining chunks (or
|
|
// undefined if nothing remains).
|
|
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 || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
|
|
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
|
|
(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));
|
|
}
|
|
}
|
|
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 || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
|
|
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
|
|
(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
|
|
span.to == null ? null : span.to - endCh));
|
|
}
|
|
}
|
|
return nw;
|
|
}
|
|
|
|
// Given a change object, compute the new set of marker spans that
|
|
// cover the line in which the change took place. Removes spans
|
|
// entirely within the change, reconnects spans belonging to the
|
|
// same marker that appear on both sides of the change, and cuts off
|
|
// spans partially within the change. Returns an array of span
|
|
// arrays with one element for each line in (after) the change.
|
|
function stretchSpansOverChange(doc, change) {
|
|
if (change.full) return null;
|
|
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 = cmp(change.from, change.to) == 0;
|
|
// 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);
|
|
}
|
|
}
|
|
}
|
|
// Make sure we didn't create any zero-length spans
|
|
if (first) first = clearEmptySpans(first);
|
|
if (last && last != first) last = clearEmptySpans(last);
|
|
|
|
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(new MarkedSpan(first[i].marker, null, null));
|
|
for (var i = 0; i < gap; ++i)
|
|
newMarkers.push(gapMarkers);
|
|
newMarkers.push(last);
|
|
}
|
|
return newMarkers;
|
|
}
|
|
|
|
// Remove spans that are empty and don't have a clearWhenEmpty
|
|
// option of false.
|
|
function clearEmptySpans(spans) {
|
|
for (var i = 0; i < spans.length; ++i) {
|
|
var span = spans[i];
|
|
if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
|
|
spans.splice(i--, 1);
|
|
}
|
|
if (!spans.length) return null;
|
|
return spans;
|
|
}
|
|
|
|
// Used for un/re-doing changes from the history. Combines the
|
|
// result of computing the existing spans with the set of spans that
|
|
// existed in the history (so that deleting around a span and then
|
|
// undoing brings back the span).
|
|
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;
|
|
}
|
|
|
|
// Used to 'clip' out readOnly ranges when making a change.
|
|
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(0);
|
|
for (var j = 0; j < parts.length; ++j) {
|
|
var p = parts[j];
|
|
if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) continue;
|
|
var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);
|
|
if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)
|
|
newParts.push({from: p.from, to: m.from});
|
|
if (dto > 0 || !mk.inclusiveRight && !dto)
|
|
newParts.push({from: m.to, to: p.to});
|
|
parts.splice.apply(parts, newParts);
|
|
j += newParts.length - 1;
|
|
}
|
|
}
|
|
return parts;
|
|
}
|
|
|
|
// Connect or disconnect spans from a line.
|
|
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;
|
|
}
|
|
|
|
// Helpers used when computing which overlapping collapsed span
|
|
// counts as the larger one.
|
|
function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; }
|
|
function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; }
|
|
|
|
// Returns a number indicating which of two overlapping collapsed
|
|
// spans is larger (and thus includes the other). Falls back to
|
|
// comparing ids when the spans cover exactly the same range.
|
|
function compareCollapsedMarkers(a, b) {
|
|
var lenDiff = a.lines.length - b.lines.length;
|
|
if (lenDiff != 0) return lenDiff;
|
|
var aPos = a.find(), bPos = b.find();
|
|
var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);
|
|
if (fromCmp) return -fromCmp;
|
|
var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);
|
|
if (toCmp) return toCmp;
|
|
return b.id - a.id;
|
|
}
|
|
|
|
// Find out whether a line ends or starts in a collapsed span. If
|
|
// so, return the marker for that span.
|
|
function collapsedSpanAtSide(line, start) {
|
|
var sps = sawCollapsedSpans && line.markedSpans, found;
|
|
if (sps) for (var sp, i = 0; i < sps.length; ++i) {
|
|
sp = sps[i];
|
|
if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
|
|
(!found || compareCollapsedMarkers(found, sp.marker) < 0))
|
|
found = sp.marker;
|
|
}
|
|
return found;
|
|
}
|
|
function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); }
|
|
function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); }
|
|
|
|
// Test whether there exists a collapsed span that partially
|
|
// overlaps (covers the start or end, but not both) of a new span.
|
|
// Such overlap is not allowed.
|
|
function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
|
|
var line = getLine(doc, lineNo);
|
|
var sps = sawCollapsedSpans && line.markedSpans;
|
|
if (sps) for (var i = 0; i < sps.length; ++i) {
|
|
var sp = sps[i];
|
|
if (!sp.marker.collapsed) continue;
|
|
var found = sp.marker.find(0);
|
|
var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);
|
|
var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);
|
|
if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue;
|
|
if (fromCmp <= 0 && (cmp(found.to, from) > 0 || (sp.marker.inclusiveRight && marker.inclusiveLeft)) ||
|
|
fromCmp >= 0 && (cmp(found.from, to) < 0 || (sp.marker.inclusiveLeft && marker.inclusiveRight)))
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// A visual line is a line as drawn on the screen. Folding, for
|
|
// example, can cause multiple logical lines to appear on the same
|
|
// visual line. This finds the start of the visual line that the
|
|
// given line is part of (usually that is the line itself).
|
|
function visualLine(line) {
|
|
var merged;
|
|
while (merged = collapsedSpanAtStart(line))
|
|
line = merged.find(-1, true).line;
|
|
return line;
|
|
}
|
|
|
|
// Returns an array of logical lines that continue the visual line
|
|
// started by the argument, or undefined if there are no such lines.
|
|
function visualLineContinued(line) {
|
|
var merged, lines;
|
|
while (merged = collapsedSpanAtEnd(line)) {
|
|
line = merged.find(1, true).line;
|
|
(lines || (lines = [])).push(line);
|
|
}
|
|
return lines;
|
|
}
|
|
|
|
// Get the line number of the start of the visual line that the
|
|
// given line number is part of.
|
|
function visualLineNo(doc, lineN) {
|
|
var line = getLine(doc, lineN), vis = visualLine(line);
|
|
if (line == vis) return lineN;
|
|
return lineNo(vis);
|
|
}
|
|
// Get the line number of the start of the next visual line after
|
|
// the given line.
|
|
function visualLineEndNo(doc, lineN) {
|
|
if (lineN > doc.lastLine()) return lineN;
|
|
var line = getLine(doc, lineN), merged;
|
|
if (!lineIsHidden(doc, line)) return lineN;
|
|
while (merged = collapsedSpanAtEnd(line))
|
|
line = merged.find(1, true).line;
|
|
return lineNo(line) + 1;
|
|
}
|
|
|
|
// Compute whether a line is hidden. Lines count as hidden when they
|
|
// are part of a visual line that starts with another line, or when
|
|
// they are entirely covered by collapsed, non-widget span.
|
|
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.widgetNode) 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(1, true);
|
|
return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.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.widgetNode && sp.from == span.to &&
|
|
(sp.to == null || sp.to != span.from) &&
|
|
(sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
|
|
lineIsHiddenInner(doc, line, sp)) return true;
|
|
}
|
|
}
|
|
|
|
// LINE WIDGETS
|
|
|
|
// Line widgets are block elements displayed above or below a line.
|
|
|
|
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 adjustScrollWhenAboveVisible(cm, line, diff) {
|
|
if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
|
|
addToScrollPos(cm, null, diff);
|
|
}
|
|
|
|
LineWidget.prototype.clear = function() {
|
|
var cm = this.cm, ws = this.line.widgets, line = this.line, no = lineNo(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) line.widgets = null;
|
|
var height = widgetHeight(this);
|
|
runInOp(cm, function() {
|
|
adjustScrollWhenAboveVisible(cm, line, -height);
|
|
regLineChange(cm, no, "widget");
|
|
updateLineHeight(line, Math.max(0, line.height - height));
|
|
});
|
|
};
|
|
LineWidget.prototype.changed = function() {
|
|
var oldH = this.height, cm = this.cm, line = this.line;
|
|
this.height = null;
|
|
var diff = widgetHeight(this) - oldH;
|
|
if (!diff) return;
|
|
runInOp(cm, function() {
|
|
cm.curOp.forceUpdate = true;
|
|
adjustScrollWhenAboveVisible(cm, line, diff);
|
|
updateLineHeight(line, line.height + diff);
|
|
});
|
|
};
|
|
|
|
function widgetHeight(widget) {
|
|
if (widget.height != null) return widget.height;
|
|
if (!contains(document.body, widget.node)) {
|
|
var parentStyle = "position: relative;";
|
|
if (widget.coverGutter)
|
|
parentStyle += "margin-left: -" + widget.cm.display.gutters.offsetWidth + "px;";
|
|
if (widget.noHScroll)
|
|
parentStyle += "width: " + widget.cm.display.wrapper.clientWidth + "px;";
|
|
removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, parentStyle));
|
|
}
|
|
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.doc, handle, "widget", 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)) {
|
|
var aboveVisible = heightAtLine(line) < cm.doc.scrollTop;
|
|
updateLineHeight(line, line.height + widgetHeight(widget));
|
|
if (aboveVisible) addToScrollPos(cm, null, widget.height);
|
|
cm.curOp.forceUpdate = true;
|
|
}
|
|
return true;
|
|
});
|
|
return widget;
|
|
}
|
|
|
|
// LINE DATA STRUCTURE
|
|
|
|
// Line objects. These hold state related to a line, including
|
|
// highlighting info (the styles array).
|
|
var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) {
|
|
this.text = text;
|
|
attachMarkedSpans(this, markedSpans);
|
|
this.height = estimateHeight ? estimateHeight(this) : 1;
|
|
};
|
|
eventMixin(Line);
|
|
Line.prototype.lineNo = function() { return lineNo(this); };
|
|
|
|
// Change the content (text, markers) of a line. Automatically
|
|
// invalidates cached information and tries to re-estimate the
|
|
// line's height.
|
|
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);
|
|
}
|
|
|
|
// Detach a line from the document tree and its markers.
|
|
function cleanUpLine(line) {
|
|
line.parent = null;
|
|
detachMarkedSpans(line);
|
|
}
|
|
|
|
function extractLineClasses(type, output) {
|
|
if (type) for (;;) {
|
|
var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/);
|
|
if (!lineClass) break;
|
|
type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);
|
|
var prop = lineClass[1] ? "bgClass" : "textClass";
|
|
if (output[prop] == null)
|
|
output[prop] = lineClass[2];
|
|
else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop]))
|
|
output[prop] += " " + lineClass[2];
|
|
}
|
|
return type;
|
|
}
|
|
|
|
function callBlankLine(mode, state) {
|
|
if (mode.blankLine) return mode.blankLine(state);
|
|
if (!mode.innerMode) return;
|
|
var inner = CodeMirror.innerMode(mode, state);
|
|
if (inner.mode.blankLine) return inner.mode.blankLine(inner.state);
|
|
}
|
|
|
|
function readToken(mode, stream, state, inner) {
|
|
for (var i = 0; i < 10; i++) {
|
|
if (inner) inner[0] = CodeMirror.innerMode(mode, state).mode;
|
|
var style = mode.token(stream, state);
|
|
if (stream.pos > stream.start) return style;
|
|
}
|
|
throw new Error("Mode " + mode.name + " failed to advance stream.");
|
|
}
|
|
|
|
// Utility for getTokenAt and getLineTokens
|
|
function takeToken(cm, pos, precise, asArray) {
|
|
function getObj(copy) {
|
|
return {start: stream.start, end: stream.pos,
|
|
string: stream.current(),
|
|
type: style || null,
|
|
state: copy ? copyState(doc.mode, state) : state};
|
|
}
|
|
|
|
var doc = cm.doc, mode = doc.mode, style;
|
|
pos = clipPos(doc, pos);
|
|
var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise);
|
|
var stream = new StringStream(line.text, cm.options.tabSize), tokens;
|
|
if (asArray) tokens = [];
|
|
while ((asArray || stream.pos < pos.ch) && !stream.eol()) {
|
|
stream.start = stream.pos;
|
|
style = readToken(mode, stream, state);
|
|
if (asArray) tokens.push(getObj(true));
|
|
}
|
|
return asArray ? tokens : getObj();
|
|
}
|
|
|
|
// Run the given mode's parser over a line, calling f for each token.
|
|
function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) {
|
|
var flattenSpans = mode.flattenSpans;
|
|
if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;
|
|
var curStart = 0, curStyle = null;
|
|
var stream = new StringStream(text, cm.options.tabSize), style;
|
|
var inner = cm.options.addModeClass && [null];
|
|
if (text == "") extractLineClasses(callBlankLine(mode, state), lineClasses);
|
|
while (!stream.eol()) {
|
|
if (stream.pos > cm.options.maxHighlightLength) {
|
|
flattenSpans = false;
|
|
if (forceToEnd) processLine(cm, text, state, stream.pos);
|
|
stream.pos = text.length;
|
|
style = null;
|
|
} else {
|
|
style = extractLineClasses(readToken(mode, stream, state, inner), lineClasses);
|
|
}
|
|
if (inner) {
|
|
var mName = inner[0].name;
|
|
if (mName) style = "m-" + (style ? mName + " " + style : mName);
|
|
}
|
|
if (!flattenSpans || curStyle != style) {
|
|
while (curStart < stream.start) {
|
|
curStart = Math.min(stream.start, curStart + 50000);
|
|
f(curStart, curStyle);
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
|
|
// Compute a style array (an array starting with a mode generation
|
|
// -- for invalidation -- followed by pairs of end positions and
|
|
// style strings), which is used to highlight the tokens on the
|
|
// line.
|
|
function highlightLine(cm, line, state, forceToEnd) {
|
|
// A styles array always starts with a number identifying the
|
|
// mode/overlays that it is based on (for easy invalidation).
|
|
var st = [cm.state.modeGen], lineClasses = {};
|
|
// Compute the base array of styles
|
|
runMode(cm, line.text, cm.doc.mode, state, function(end, style) {
|
|
st.push(end, style);
|
|
}, lineClasses, forceToEnd);
|
|
|
|
// Run overlays, adjust style array.
|
|
for (var o = 0; o < cm.state.overlays.length; ++o) {
|
|
var overlay = cm.state.overlays[o], i = 1, at = 0;
|
|
runMode(cm, line.text, overlay.mode, true, function(end, style) {
|
|
var start = i;
|
|
// Ensure there's a token end at the current position, and that i points at it
|
|
while (at < end) {
|
|
var i_end = st[i];
|
|
if (i_end > end)
|
|
st.splice(i, 1, end, st[i+1], i_end);
|
|
i += 2;
|
|
at = Math.min(end, i_end);
|
|
}
|
|
if (!style) return;
|
|
if (overlay.opaque) {
|
|
st.splice(start, i - start, end, "cm-overlay " + style);
|
|
i = start + 2;
|
|
} else {
|
|
for (; start < i; start += 2) {
|
|
var cur = st[start+1];
|
|
st[start+1] = (cur ? cur + " " : "") + "cm-overlay " + style;
|
|
}
|
|
}
|
|
}, lineClasses);
|
|
}
|
|
|
|
return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null};
|
|
}
|
|
|
|
function getLineStyles(cm, line, updateFrontier) {
|
|
if (!line.styles || line.styles[0] != cm.state.modeGen) {
|
|
var result = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
|
|
line.styles = result.styles;
|
|
if (result.classes) line.styleClasses = result.classes;
|
|
else if (line.styleClasses) line.styleClasses = null;
|
|
if (updateFrontier === cm.doc.frontier) cm.doc.frontier++;
|
|
}
|
|
return line.styles;
|
|
}
|
|
|
|
// Lightweight form of highlight -- proceed over this line and
|
|
// update state, but don't save a style array. Used for lines that
|
|
// aren't currently visible.
|
|
function processLine(cm, text, state, startAt) {
|
|
var mode = cm.doc.mode;
|
|
var stream = new StringStream(text, cm.options.tabSize);
|
|
stream.start = stream.pos = startAt || 0;
|
|
if (text == "") callBlankLine(mode, state);
|
|
while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) {
|
|
readToken(mode, stream, state);
|
|
stream.start = stream.pos;
|
|
}
|
|
}
|
|
|
|
// Convert a style as returned by a mode (either null, or a string
|
|
// containing one or more styles) to a CSS style. This is cached,
|
|
// and also looks for line-wide styles.
|
|
var styleToClassCache = {}, styleToClassCacheWithMode = {};
|
|
function interpretTokenStyle(style, options) {
|
|
if (!style || /^\s*$/.test(style)) return null;
|
|
var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
|
|
return cache[style] ||
|
|
(cache[style] = style.replace(/\S+/g, "cm-$&"));
|
|
}
|
|
|
|
// Render the DOM representation of the text of a line. Also builds
|
|
// up a 'line map', which points at the DOM nodes that represent
|
|
// specific stretches of text, and is used by the measuring code.
|
|
// The returned object contains the DOM node, this map, and
|
|
// information about line-wide styles that were set by the mode.
|
|
function buildLineContent(cm, lineView) {
|
|
// The padding-right forces the element to have a 'border', which
|
|
// is needed on Webkit to be able to get line-level bounding
|
|
// rectangles for it (in measureChar).
|
|
var content = elt("span", null, null, webkit ? "padding-right: .1px" : null);
|
|
var builder = {pre: elt("pre", [content]), content: content, col: 0, pos: 0, cm: cm};
|
|
lineView.measure = {};
|
|
|
|
// Iterate over the logical lines that make up this visual line.
|
|
for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
|
|
var line = i ? lineView.rest[i - 1] : lineView.line, order;
|
|
builder.pos = 0;
|
|
builder.addToken = buildToken;
|
|
// Optionally wire in some hacks into the token-rendering
|
|
// algorithm, to deal with browser quirks.
|
|
if ((ie || webkit) && cm.getOption("lineWrapping"))
|
|
builder.addToken = buildTokenSplitSpaces(builder.addToken);
|
|
if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line)))
|
|
builder.addToken = buildTokenBadBidi(builder.addToken, order);
|
|
builder.map = [];
|
|
var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);
|
|
insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));
|
|
if (line.styleClasses) {
|
|
if (line.styleClasses.bgClass)
|
|
builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || "");
|
|
if (line.styleClasses.textClass)
|
|
builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || "");
|
|
}
|
|
|
|
// Ensure at least a single node is present, for measuring.
|
|
if (builder.map.length == 0)
|
|
builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure)));
|
|
|
|
// Store the map and a cache object for the current logical line
|
|
if (i == 0) {
|
|
lineView.measure.map = builder.map;
|
|
lineView.measure.cache = {};
|
|
} else {
|
|
(lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map);
|
|
(lineView.measure.caches || (lineView.measure.caches = [])).push({});
|
|
}
|
|
}
|
|
|
|
// See issue #2901
|
|
if (webkit && /\bcm-tab\b/.test(builder.content.lastChild.className))
|
|
builder.content.className = "cm-tab-wrap-hack";
|
|
|
|
signal(cm, "renderLine", cm, lineView.line, builder.pre);
|
|
if (builder.pre.className)
|
|
builder.textClass = joinClasses(builder.pre.className, builder.textClass || "");
|
|
|
|
return builder;
|
|
}
|
|
|
|
function defaultSpecialCharPlaceholder(ch) {
|
|
var token = elt("span", "\u2022", "cm-invalidchar");
|
|
token.title = "\\u" + ch.charCodeAt(0).toString(16);
|
|
token.setAttribute("aria-label", token.title);
|
|
return token;
|
|
}
|
|
|
|
// Build up the DOM representation for a single token, and add it to
|
|
// the line map. Takes care to render special characters separately.
|
|
function buildToken(builder, text, style, startStyle, endStyle, title, css) {
|
|
if (!text) return;
|
|
var special = builder.cm.options.specialChars, mustWrap = false;
|
|
if (!special.test(text)) {
|
|
builder.col += text.length;
|
|
var content = document.createTextNode(text);
|
|
builder.map.push(builder.pos, builder.pos + text.length, content);
|
|
if (ie && ie_version < 9) mustWrap = true;
|
|
builder.pos += text.length;
|
|
} else {
|
|
var content = document.createDocumentFragment(), pos = 0;
|
|
while (true) {
|
|
special.lastIndex = pos;
|
|
var m = special.exec(text);
|
|
var skipped = m ? m.index - pos : text.length - pos;
|
|
if (skipped) {
|
|
var txt = document.createTextNode(text.slice(pos, pos + skipped));
|
|
if (ie && ie_version < 9) content.appendChild(elt("span", [txt]));
|
|
else content.appendChild(txt);
|
|
builder.map.push(builder.pos, builder.pos + skipped, txt);
|
|
builder.col += skipped;
|
|
builder.pos += skipped;
|
|
}
|
|
if (!m) break;
|
|
pos += skipped + 1;
|
|
if (m[0] == "\t") {
|
|
var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
|
|
var txt = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
|
|
txt.setAttribute("role", "presentation");
|
|
builder.col += tabWidth;
|
|
} else {
|
|
var txt = builder.cm.options.specialCharPlaceholder(m[0]);
|
|
if (ie && ie_version < 9) content.appendChild(elt("span", [txt]));
|
|
else content.appendChild(txt);
|
|
builder.col += 1;
|
|
}
|
|
builder.map.push(builder.pos, builder.pos + 1, txt);
|
|
builder.pos++;
|
|
}
|
|
}
|
|
if (style || startStyle || endStyle || mustWrap || css) {
|
|
var fullStyle = style || "";
|
|
if (startStyle) fullStyle += startStyle;
|
|
if (endStyle) fullStyle += endStyle;
|
|
var token = elt("span", [content], fullStyle, css);
|
|
if (title) token.title = title;
|
|
return builder.content.appendChild(token);
|
|
}
|
|
builder.content.appendChild(content);
|
|
}
|
|
|
|
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) {
|
|
inner(builder, text.replace(/ {3,}/g, split), style, startStyle, endStyle, title);
|
|
};
|
|
}
|
|
|
|
// Work around nonsense dimensions being reported for stretches of
|
|
// right-to-left text.
|
|
function buildTokenBadBidi(inner, order) {
|
|
return function(builder, text, style, startStyle, endStyle, title) {
|
|
style = style ? style + " cm-force-border" : "cm-force-border";
|
|
var start = builder.pos, end = start + text.length;
|
|
for (;;) {
|
|
// Find the part that overlaps with the start of this text
|
|
for (var i = 0; i < order.length; i++) {
|
|
var part = order[i];
|
|
if (part.to > start && part.from <= start) break;
|
|
}
|
|
if (part.to >= end) return inner(builder, text, style, startStyle, endStyle, title);
|
|
inner(builder, text.slice(0, part.to - start), style, startStyle, null, title);
|
|
startStyle = null;
|
|
text = text.slice(part.to - start);
|
|
start = part.to;
|
|
}
|
|
};
|
|
}
|
|
|
|
function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
|
|
var widget = !ignoreWidget && marker.widgetNode;
|
|
if (widget) {
|
|
builder.map.push(builder.pos, builder.pos + size, widget);
|
|
builder.content.appendChild(widget);
|
|
}
|
|
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.cm.options));
|
|
return;
|
|
}
|
|
|
|
var len = allText.length, pos = 0, i = 1, text = "", style, css;
|
|
var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed;
|
|
for (;;) {
|
|
if (nextChange == pos) { // Update current marker set
|
|
spanStyle = spanEndStyle = spanStartStyle = title = css = "";
|
|
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.css) css = m.css;
|
|
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 || compareCollapsedMarkers(collapsed.marker, m) < 0))
|
|
collapsed = sp;
|
|
} else if (sp.from > pos && nextChange > sp.from) {
|
|
nextChange = sp.from;
|
|
}
|
|
if (m.type == "bookmark" && sp.from == pos && m.widgetNode) foundBookmarks.push(m);
|
|
}
|
|
if (collapsed && (collapsed.from || 0) == pos) {
|
|
buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
|
|
collapsed.marker, collapsed.from == null);
|
|
if (collapsed.to == null) return;
|
|
}
|
|
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, css);
|
|
}
|
|
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.cm.options);
|
|
}
|
|
}
|
|
}
|
|
|
|
// DOCUMENT DATA STRUCTURE
|
|
|
|
// By default, updates that start and end at the beginning of a line
|
|
// are treated specially, in order to make the association of line
|
|
// widgets and marker elements with the text behave more intuitive.
|
|
function isWholeLineUpdate(doc, change) {
|
|
return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
|
|
(!doc.cm || doc.cm.options.wholeLineUpdateBefore);
|
|
}
|
|
|
|
// Perform a change on the document data structure.
|
|
function updateDoc(doc, change, markedSpans, estimateHeight) {
|
|
function spansFor(n) {return markedSpans ? markedSpans[n] : null;}
|
|
function update(line, text, spans) {
|
|
updateLine(line, text, spans, estimateHeight);
|
|
signalLater(line, "change", line, change);
|
|
}
|
|
function linesFor(start, end) {
|
|
for (var i = start, result = []; i < end; ++i)
|
|
result.push(new Line(text[i], spansFor(i), estimateHeight));
|
|
return result;
|
|
}
|
|
|
|
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;
|
|
|
|
// Adjust the line structure
|
|
if (change.full) {
|
|
doc.insert(0, linesFor(0, text.length));
|
|
doc.remove(text.length, doc.size - text.length);
|
|
} else if (isWholeLineUpdate(doc, change)) {
|
|
// This is a whole-line replace. Treated specially to make
|
|
// sure line objects move the way they are supposed to.
|
|
var added = linesFor(0, text.length - 1);
|
|
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 {
|
|
var added = linesFor(1, text.length - 1);
|
|
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);
|
|
var added = linesFor(1, text.length - 1);
|
|
if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
|
|
doc.insert(from.line + 1, added);
|
|
}
|
|
|
|
signalLater(doc, "change", doc, change);
|
|
}
|
|
|
|
// The document is represented as a BTree consisting of leaves, with
|
|
// chunk of lines in them, and branches, with up to ten leaves or
|
|
// other branch nodes below them. The top node is always a branch
|
|
// node, and is the document object itself (meaning it has
|
|
// additional methods and properties).
|
|
//
|
|
// All nodes have parent links. The tree is used both to go from
|
|
// line numbers to line objects, and to go from objects to numbers.
|
|
// It also indexes by height, and is used to convert between height
|
|
// and line object, and to find the total height of the document.
|
|
//
|
|
// See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html
|
|
|
|
function LeafChunk(lines) {
|
|
this.lines = lines;
|
|
this.parent = null;
|
|
for (var i = 0, height = 0; i < lines.length; ++i) {
|
|
lines[i].parent = this;
|
|
height += lines[i].height;
|
|
}
|
|
this.height = height;
|
|
}
|
|
|
|
LeafChunk.prototype = {
|
|
chunkSize: function() { return this.lines.length; },
|
|
// Remove the n lines at offset 'at'.
|
|
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);
|
|
},
|
|
// Helper used to collapse a small branch into a single leaf.
|
|
collapse: function(lines) {
|
|
lines.push.apply(lines, this.lines);
|
|
},
|
|
// Insert the given array of lines at offset 'at', count them as
|
|
// having the given height.
|
|
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; i < lines.length; ++i) lines[i].parent = this;
|
|
},
|
|
// Used to iterate over a part of the tree.
|
|
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; i < children.length; ++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 the result is smaller than 25 lines, ensure that it is a
|
|
// single leaf node.
|
|
if (this.size - n < 25 &&
|
|
(this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
|
|
var lines = [];
|
|
this.collapse(lines);
|
|
this.children = [new LeafChunk(lines)];
|
|
this.children[0].parent = this;
|
|
}
|
|
},
|
|
collapse: function(lines) {
|
|
for (var i = 0; i < this.children.length; ++i) this.children[i].collapse(lines);
|
|
},
|
|
insertInner: function(at, lines, height) {
|
|
this.size += lines.length;
|
|
this.height += height;
|
|
for (var i = 0; i < this.children.length; ++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;
|
|
}
|
|
},
|
|
// When a node has grown, check whether it should be split.
|
|
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; i < this.children.length; ++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.cleanGeneration = 1;
|
|
this.frontier = firstLine;
|
|
var start = Pos(firstLine, 0);
|
|
this.sel = simpleSelection(start);
|
|
this.history = new History(null);
|
|
this.id = ++nextDocId;
|
|
this.modeOption = mode;
|
|
|
|
if (typeof text == "string") text = splitLines(text);
|
|
updateDoc(this, {from: start, to: start, text: text});
|
|
setSelection(this, simpleSelection(start), sel_dontScroll);
|
|
};
|
|
|
|
Doc.prototype = createObj(BranchChunk.prototype, {
|
|
constructor: Doc,
|
|
// Iterate over the document. Supports two forms -- with only one
|
|
// argument, it calls that for each line in the document. With
|
|
// three, it iterates over the range given by the first two (with
|
|
// the second being non-inclusive).
|
|
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);
|
|
},
|
|
|
|
// Non-public interface for adding and removing lines.
|
|
insert: function(at, lines) {
|
|
var height = 0;
|
|
for (var i = 0; i < lines.length; ++i) height += lines[i].height;
|
|
this.insertInner(at - this.first, lines, height);
|
|
},
|
|
remove: function(at, n) { this.removeInner(at - this.first, n); },
|
|
|
|
// From here, the methods are part of the public interface. Most
|
|
// are also available from CodeMirror (editor) instances.
|
|
|
|
getValue: function(lineSep) {
|
|
var lines = getLines(this, this.first, this.first + this.size);
|
|
if (lineSep === false) return lines;
|
|
return lines.join(lineSep || "\n");
|
|
},
|
|
setValue: docMethodOp(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", full: true}, true);
|
|
setSelection(this, simpleSelection(top));
|
|
}),
|
|
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;},
|
|
|
|
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(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 range = this.sel.primary(), pos;
|
|
if (start == null || start == "head") pos = range.head;
|
|
else if (start == "anchor") pos = range.anchor;
|
|
else if (start == "end" || start == "to" || start === false) pos = range.to();
|
|
else pos = range.from();
|
|
return pos;
|
|
},
|
|
listSelections: function() { return this.sel.ranges; },
|
|
somethingSelected: function() {return this.sel.somethingSelected();},
|
|
|
|
setCursor: docMethodOp(function(line, ch, options) {
|
|
setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options);
|
|
}),
|
|
setSelection: docMethodOp(function(anchor, head, options) {
|
|
setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);
|
|
}),
|
|
extendSelection: docMethodOp(function(head, other, options) {
|
|
extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
|
|
}),
|
|
extendSelections: docMethodOp(function(heads, options) {
|
|
extendSelections(this, clipPosArray(this, heads, options));
|
|
}),
|
|
extendSelectionsBy: docMethodOp(function(f, options) {
|
|
extendSelections(this, map(this.sel.ranges, f), options);
|
|
}),
|
|
setSelections: docMethodOp(function(ranges, primary, options) {
|
|
if (!ranges.length) return;
|
|
for (var i = 0, out = []; i < ranges.length; i++)
|
|
out[i] = new Range(clipPos(this, ranges[i].anchor),
|
|
clipPos(this, ranges[i].head));
|
|
if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex);
|
|
setSelection(this, normalizeSelection(out, primary), options);
|
|
}),
|
|
addSelection: docMethodOp(function(anchor, head, options) {
|
|
var ranges = this.sel.ranges.slice(0);
|
|
ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));
|
|
setSelection(this, normalizeSelection(ranges, ranges.length - 1), options);
|
|
}),
|
|
|
|
getSelection: function(lineSep) {
|
|
var ranges = this.sel.ranges, lines;
|
|
for (var i = 0; i < ranges.length; i++) {
|
|
var sel = getBetween(this, ranges[i].from(), ranges[i].to());
|
|
lines = lines ? lines.concat(sel) : sel;
|
|
}
|
|
if (lineSep === false) return lines;
|
|
else return lines.join(lineSep || "\n");
|
|
},
|
|
getSelections: function(lineSep) {
|
|
var parts = [], ranges = this.sel.ranges;
|
|
for (var i = 0; i < ranges.length; i++) {
|
|
var sel = getBetween(this, ranges[i].from(), ranges[i].to());
|
|
if (lineSep !== false) sel = sel.join(lineSep || "\n");
|
|
parts[i] = sel;
|
|
}
|
|
return parts;
|
|
},
|
|
replaceSelection: function(code, collapse, origin) {
|
|
var dup = [];
|
|
for (var i = 0; i < this.sel.ranges.length; i++)
|
|
dup[i] = code;
|
|
this.replaceSelections(dup, collapse, origin || "+input");
|
|
},
|
|
replaceSelections: docMethodOp(function(code, collapse, origin) {
|
|
var changes = [], sel = this.sel;
|
|
for (var i = 0; i < sel.ranges.length; i++) {
|
|
var range = sel.ranges[i];
|
|
changes[i] = {from: range.from(), to: range.to(), text: splitLines(code[i]), origin: origin};
|
|
}
|
|
var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
|
|
for (var i = changes.length - 1; i >= 0; i--)
|
|
makeChange(this, changes[i]);
|
|
if (newSel) setSelectionReplaceHistory(this, newSel);
|
|
else if (this.cm) ensureCursorVisible(this.cm);
|
|
}),
|
|
undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}),
|
|
redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}),
|
|
undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}),
|
|
redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}),
|
|
|
|
setExtending: function(val) {this.extend = val;},
|
|
getExtending: function() {return this.extend;},
|
|
|
|
historySize: function() {
|
|
var hist = this.history, done = 0, undone = 0;
|
|
for (var i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done;
|
|
for (var i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone;
|
|
return {undo: done, redo: undone};
|
|
},
|
|
clearHistory: function() {this.history = new History(this.history.maxGeneration);},
|
|
|
|
markClean: function() {
|
|
this.cleanGeneration = this.changeGeneration(true);
|
|
},
|
|
changeGeneration: function(forceSplit) {
|
|
if (forceSplit)
|
|
this.history.lastOp = this.history.lastSelOp = 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 = new History(this.history.maxGeneration);
|
|
hist.done = copyHistoryArray(histData.done.slice(0), null, true);
|
|
hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);
|
|
},
|
|
|
|
addLineClass: docMethodOp(function(handle, where, cls) {
|
|
return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) {
|
|
var prop = where == "text" ? "textClass"
|
|
: where == "background" ? "bgClass"
|
|
: where == "gutter" ? "gutterClass" : "wrapClass";
|
|
if (!line[prop]) line[prop] = cls;
|
|
else if (classTest(cls).test(line[prop])) return false;
|
|
else line[prop] += " " + cls;
|
|
return true;
|
|
});
|
|
}),
|
|
removeLineClass: docMethodOp(function(handle, where, cls) {
|
|
return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) {
|
|
var prop = where == "text" ? "textClass"
|
|
: where == "background" ? "bgClass"
|
|
: where == "gutter" ? "gutterClass" : "wrapClass";
|
|
var cur = line[prop];
|
|
if (!cur) return false;
|
|
else if (cls == null) line[prop] = null;
|
|
else {
|
|
var found = cur.match(classTest(cls));
|
|
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;
|
|
});
|
|
}),
|
|
|
|
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,
|
|
clearWhenEmpty: false, shared: options && options.shared};
|
|
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;
|
|
},
|
|
findMarks: function(from, to, filter) {
|
|
from = clipPos(this, from); to = clipPos(this, to);
|
|
var found = [], lineNo = from.line;
|
|
this.iter(from.line, to.line + 1, function(line) {
|
|
var spans = line.markedSpans;
|
|
if (spans) for (var i = 0; i < spans.length; i++) {
|
|
var span = spans[i];
|
|
if (!(lineNo == from.line && from.ch > span.to ||
|
|
span.from == null && lineNo != from.line||
|
|
lineNo == to.line && span.from > to.ch) &&
|
|
(!filter || filter(span.marker)))
|
|
found.push(span.marker.parent || span.marker);
|
|
}
|
|
++lineNo;
|
|
});
|
|
return found;
|
|
},
|
|
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 = this.sel;
|
|
doc.extend = false;
|
|
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}];
|
|
copySharedMarkers(copy, findSharedMarkers(this));
|
|
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);
|
|
detachSharedMarkers(findSharedMarkers(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 = new History(null);
|
|
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;}
|
|
});
|
|
|
|
// Public alias.
|
|
Doc.prototype.eachLine = Doc.prototype.iter;
|
|
|
|
// Set up methods on CodeMirror's prototype to redirect to the editor's document.
|
|
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);
|
|
|
|
// Call f for all linked documents.
|
|
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);
|
|
}
|
|
|
|
// Attach a document to an editor.
|
|
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) findMaxLine(cm);
|
|
cm.options.mode = doc.modeOption;
|
|
regChange(cm);
|
|
}
|
|
|
|
// LINE UTILITIES
|
|
|
|
// Find the line object corresponding to the given line number.
|
|
function getLine(doc, n) {
|
|
n -= doc.first;
|
|
if (n < 0 || n >= doc.size) throw new Error("There is no line " + (n + doc.first) + " in the document.");
|
|
for (var chunk = doc; !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];
|
|
}
|
|
|
|
// Get the part of a document between two positions, as an array of
|
|
// strings.
|
|
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;
|
|
}
|
|
// Get the lines between from and to, as array of strings.
|
|
function getLines(doc, from, to) {
|
|
var out = [];
|
|
doc.iter(from, to, function(line) { out.push(line.text); });
|
|
return out;
|
|
}
|
|
|
|
// Update the height of a line, propagating the height change
|
|
// upwards to parent nodes.
|
|
function updateLineHeight(line, height) {
|
|
var diff = height - line.height;
|
|
if (diff) for (var n = line; n; n = n.parent) n.height += diff;
|
|
}
|
|
|
|
// Given a line object, find its line number by walking up through
|
|
// its parent links.
|
|
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;
|
|
}
|
|
|
|
// Find the line at the given vertical position, using the height
|
|
// information in the document tree.
|
|
function lineAtHeight(chunk, h) {
|
|
var n = chunk.first;
|
|
outer: do {
|
|
for (var i = 0; i < chunk.children.length; ++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; i < chunk.lines.length; ++i) {
|
|
var line = chunk.lines[i], lh = line.height;
|
|
if (h < lh) break;
|
|
h -= lh;
|
|
}
|
|
return n + i;
|
|
}
|
|
|
|
|
|
// Find the height above the given line.
|
|
function heightAtLine(lineObj) {
|
|
lineObj = visualLine(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;
|
|
}
|
|
|
|
// Get the bidi ordering for the given line (and cache it). Returns
|
|
// false for lines that are fully left-to-right, and an array of
|
|
// BidiSpan objects otherwise.
|
|
function getOrder(line) {
|
|
var order = line.order;
|
|
if (order == null) order = line.order = bidiOrdering(line.text);
|
|
return order;
|
|
}
|
|
|
|
// HISTORY
|
|
|
|
function History(startGen) {
|
|
// Arrays of change events and selections. Doing something adds an
|
|
// event to done and clears undo. Undoing moves events from done
|
|
// to undone, redoing moves them in the other direction.
|
|
this.done = []; this.undone = [];
|
|
this.undoDepth = Infinity;
|
|
// Used to track when changes can be merged into a single undo
|
|
// event
|
|
this.lastModTime = this.lastSelTime = 0;
|
|
this.lastOp = this.lastSelOp = null;
|
|
this.lastOrigin = this.lastSelOrigin = null;
|
|
// Used by the isClean() method
|
|
this.generation = this.maxGeneration = startGen || 1;
|
|
}
|
|
|
|
// Create a history change event from an updateDoc-style change
|
|
// object.
|
|
function historyChangeFromChange(doc, change) {
|
|
var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
|
|
attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
|
|
linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true);
|
|
return histChange;
|
|
}
|
|
|
|
// Pop all selection events off the end of a history array. Stop at
|
|
// a change event.
|
|
function clearSelectionEvents(array) {
|
|
while (array.length) {
|
|
var last = lst(array);
|
|
if (last.ranges) array.pop();
|
|
else break;
|
|
}
|
|
}
|
|
|
|
// Find the top change event in the history. Pop off selection
|
|
// events that are in the way.
|
|
function lastChangeEvent(hist, force) {
|
|
if (force) {
|
|
clearSelectionEvents(hist.done);
|
|
return lst(hist.done);
|
|
} else if (hist.done.length && !lst(hist.done).ranges) {
|
|
return lst(hist.done);
|
|
} else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
|
|
hist.done.pop();
|
|
return lst(hist.done);
|
|
}
|
|
}
|
|
|
|
// Register a change in the history. Merges changes that are within
|
|
// a single operation, ore are close together with an origin that
|
|
// allows merging (starting with "+") into a single event.
|
|
function addChangeToHistory(doc, change, selAfter, opId) {
|
|
var hist = doc.history;
|
|
hist.undone.length = 0;
|
|
var time = +new Date, cur;
|
|
|
|
if ((hist.lastOp == opId ||
|
|
hist.lastOrigin == change.origin && change.origin &&
|
|
((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) ||
|
|
change.origin.charAt(0) == "*")) &&
|
|
(cur = lastChangeEvent(hist, hist.lastOp == opId))) {
|
|
// Merge this change into the last event
|
|
var last = lst(cur.changes);
|
|
if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
|
|
// 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));
|
|
}
|
|
} else {
|
|
// Can not be merged, start a new event.
|
|
var before = lst(hist.done);
|
|
if (!before || !before.ranges)
|
|
pushSelectionToHistory(doc.sel, hist.done);
|
|
cur = {changes: [historyChangeFromChange(doc, change)],
|
|
generation: hist.generation};
|
|
hist.done.push(cur);
|
|
while (hist.done.length > hist.undoDepth) {
|
|
hist.done.shift();
|
|
if (!hist.done[0].ranges) hist.done.shift();
|
|
}
|
|
}
|
|
hist.done.push(selAfter);
|
|
hist.generation = ++hist.maxGeneration;
|
|
hist.lastModTime = hist.lastSelTime = time;
|
|
hist.lastOp = hist.lastSelOp = opId;
|
|
hist.lastOrigin = hist.lastSelOrigin = change.origin;
|
|
|
|
if (!last) signal(doc, "historyAdded");
|
|
}
|
|
|
|
function selectionEventCanBeMerged(doc, origin, prev, sel) {
|
|
var ch = origin.charAt(0);
|
|
return ch == "*" ||
|
|
ch == "+" &&
|
|
prev.ranges.length == sel.ranges.length &&
|
|
prev.somethingSelected() == sel.somethingSelected() &&
|
|
new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500);
|
|
}
|
|
|
|
// Called whenever the selection changes, sets the new selection as
|
|
// the pending selection in the history, and pushes the old pending
|
|
// selection into the 'done' array when it was significantly
|
|
// different (in number of selected ranges, emptiness, or time).
|
|
function addSelectionToHistory(doc, sel, opId, options) {
|
|
var hist = doc.history, origin = options && options.origin;
|
|
|
|
// A new event is started when the previous origin does not match
|
|
// the current, or the origins don't allow matching. Origins
|
|
// starting with * are always merged, those starting with + are
|
|
// merged when similar and close together in time.
|
|
if (opId == hist.lastSelOp ||
|
|
(origin && hist.lastSelOrigin == origin &&
|
|
(hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
|
|
selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
|
|
hist.done[hist.done.length - 1] = sel;
|
|
else
|
|
pushSelectionToHistory(sel, hist.done);
|
|
|
|
hist.lastSelTime = +new Date;
|
|
hist.lastSelOrigin = origin;
|
|
hist.lastSelOp = opId;
|
|
if (options && options.clearRedo !== false)
|
|
clearSelectionEvents(hist.undone);
|
|
}
|
|
|
|
function pushSelectionToHistory(sel, dest) {
|
|
var top = lst(dest);
|
|
if (!(top && top.ranges && top.equals(sel)))
|
|
dest.push(sel);
|
|
}
|
|
|
|
// Used to store marked span information in the history.
|
|
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;
|
|
});
|
|
}
|
|
|
|
// When un/re-doing restores text containing marked spans, those
|
|
// that have been explicitly cleared should not be restored.
|
|
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;
|
|
}
|
|
|
|
// Retrieve and filter the old marked spans stored in a change event.
|
|
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, instantiateSel) {
|
|
for (var i = 0, copy = []; i < events.length; ++i) {
|
|
var event = events[i];
|
|
if (event.ranges) {
|
|
copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);
|
|
continue;
|
|
}
|
|
var changes = event.changes, newChanges = [];
|
|
copy.push({changes: newChanges});
|
|
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 rebaseHistSelSingle(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;
|
|
if (sub.ranges) {
|
|
if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }
|
|
for (var j = 0; j < sub.ranges.length; j++) {
|
|
rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);
|
|
rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);
|
|
}
|
|
continue;
|
|
}
|
|
for (var j = 0; j < sub.changes.length; ++j) {
|
|
var cur = sub.changes[j];
|
|
if (to < cur.from.line) {
|
|
cur.from = Pos(cur.from.line + diff, cur.from.ch);
|
|
cur.to = Pos(cur.to.line + diff, cur.to.ch);
|
|
} else if (from <= cur.to.line) {
|
|
ok = false;
|
|
break;
|
|
}
|
|
}
|
|
if (!ok) {
|
|
array.splice(0, i + 1);
|
|
i = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
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 UTILITIES
|
|
|
|
// Due to the fact that we still support jurassic IE versions, some
|
|
// compatibility wrappers are needed.
|
|
|
|
var e_preventDefault = CodeMirror.e_preventDefault = function(e) {
|
|
if (e.preventDefault) e.preventDefault();
|
|
else e.returnValue = false;
|
|
};
|
|
var e_stopPropagation = CodeMirror.e_stopPropagation = function(e) {
|
|
if (e.stopPropagation) e.stopPropagation();
|
|
else e.cancelBubble = true;
|
|
};
|
|
function e_defaultPrevented(e) {
|
|
return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false;
|
|
}
|
|
var e_stop = CodeMirror.e_stop = function(e) {e_preventDefault(e); e_stopPropagation(e);};
|
|
|
|
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
|
|
|
|
// Lightweight event framework. on/off also work on DOM nodes,
|
|
// registering native DOM handlers.
|
|
|
|
var on = CodeMirror.on = function(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);
|
|
}
|
|
};
|
|
|
|
var off = CodeMirror.off = function(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; }
|
|
}
|
|
};
|
|
|
|
var signal = CodeMirror.signal = function(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 orphanDelayedCallbacks = null;
|
|
|
|
// Often, we want to signal events at a point where we are in the
|
|
// middle of some work, but don't want the handler to start calling
|
|
// other methods on the editor, which might be in an inconsistent
|
|
// state or simply not expect any other events to happen.
|
|
// signalLater looks whether there are any handlers, and schedules
|
|
// them to be executed when the last operation ends, or, if no
|
|
// operation is active, when a timeout fires.
|
|
function signalLater(emitter, type /*, values...*/) {
|
|
var arr = emitter._handlers && emitter._handlers[type];
|
|
if (!arr) return;
|
|
var args = Array.prototype.slice.call(arguments, 2), list;
|
|
if (operationGroup) {
|
|
list = operationGroup.delayedCallbacks;
|
|
} else if (orphanDelayedCallbacks) {
|
|
list = orphanDelayedCallbacks;
|
|
} else {
|
|
list = orphanDelayedCallbacks = [];
|
|
setTimeout(fireOrphanDelayed, 0);
|
|
}
|
|
function bnd(f) {return function(){f.apply(null, args);};};
|
|
for (var i = 0; i < arr.length; ++i)
|
|
list.push(bnd(arr[i]));
|
|
}
|
|
|
|
function fireOrphanDelayed() {
|
|
var delayed = orphanDelayedCallbacks;
|
|
orphanDelayedCallbacks = null;
|
|
for (var i = 0; i < delayed.length; ++i) delayed[i]();
|
|
}
|
|
|
|
// The DOM events that CodeMirror handles can be overridden by
|
|
// registering a (non-DOM) handler on the editor for the event name,
|
|
// and preventDefault-ing the event in that handler.
|
|
function signalDOMEvent(cm, e, override) {
|
|
if (typeof e == "string")
|
|
e = {type: e, preventDefault: function() { this.defaultPrevented = true; }};
|
|
signal(cm, override || e.type, cm, e);
|
|
return e_defaultPrevented(e) || e.codemirrorIgnore;
|
|
}
|
|
|
|
function signalCursorActivity(cm) {
|
|
var arr = cm._handlers && cm._handlers.cursorActivity;
|
|
if (!arr) return;
|
|
var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);
|
|
for (var i = 0; i < arr.length; ++i) if (indexOf(set, arr[i]) == -1)
|
|
set.push(arr[i]);
|
|
}
|
|
|
|
function hasHandler(emitter, type) {
|
|
var arr = emitter._handlers && emitter._handlers[type];
|
|
return arr && arr.length > 0;
|
|
}
|
|
|
|
// Add on and off methods to a constructor's prototype, to make
|
|
// registering events on such objects more convenient.
|
|
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 scrollerGap = 30;
|
|
|
|
// Returned or thrown by various protocols to signal 'I'm not
|
|
// handling this'.
|
|
var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
|
|
|
|
// Reused option objects for setSelection & friends
|
|
var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"};
|
|
|
|
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.
|
|
var countColumn = CodeMirror.countColumn = function(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;;) {
|
|
var nextTab = string.indexOf("\t", i);
|
|
if (nextTab < 0 || nextTab >= end)
|
|
return n + (end - i);
|
|
n += nextTab - i;
|
|
n += tabSize - (n % tabSize);
|
|
i = nextTab + 1;
|
|
}
|
|
};
|
|
|
|
// The inverse of countColumn -- find the offset that corresponds to
|
|
// a particular column.
|
|
function findColumn(string, goal, tabSize) {
|
|
for (var pos = 0, col = 0;;) {
|
|
var nextTab = string.indexOf("\t", pos);
|
|
if (nextTab == -1) nextTab = string.length;
|
|
var skipped = nextTab - pos;
|
|
if (nextTab == string.length || col + skipped >= goal)
|
|
return pos + Math.min(skipped, goal - col);
|
|
col += nextTab - pos;
|
|
col += tabSize - (col % tabSize);
|
|
pos = nextTab + 1;
|
|
if (col >= goal) return pos;
|
|
}
|
|
}
|
|
|
|
var spaceStrs = [""];
|
|
function spaceStr(n) {
|
|
while (spaceStrs.length <= n)
|
|
spaceStrs.push(lst(spaceStrs) + " ");
|
|
return spaceStrs[n];
|
|
}
|
|
|
|
function lst(arr) { return arr[arr.length-1]; }
|
|
|
|
var selectInput = function(node) { node.select(); };
|
|
if (ios) // Mobile Safari apparently has a bug where select() is broken.
|
|
selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; };
|
|
else if (ie) // Suppress mysterious IE10 errors
|
|
selectInput = function(node) { try { node.select(); } catch(_e) {} };
|
|
|
|
function indexOf(array, elt) {
|
|
for (var i = 0; i < array.length; ++i)
|
|
if (array[i] == elt) return i;
|
|
return -1;
|
|
}
|
|
function map(array, f) {
|
|
var out = [];
|
|
for (var i = 0; i < array.length; i++) out[i] = f(array[i], i);
|
|
return out;
|
|
}
|
|
|
|
function createObj(base, props) {
|
|
var inst;
|
|
if (Object.create) {
|
|
inst = Object.create(base);
|
|
} else {
|
|
var ctor = function() {};
|
|
ctor.prototype = base;
|
|
inst = new ctor();
|
|
}
|
|
if (props) copyObj(props, inst);
|
|
return inst;
|
|
};
|
|
|
|
function copyObj(obj, target, overwrite) {
|
|
if (!target) target = {};
|
|
for (var prop in obj)
|
|
if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))
|
|
target[prop] = obj[prop];
|
|
return target;
|
|
}
|
|
|
|
function bind(f) {
|
|
var args = Array.prototype.slice.call(arguments, 1);
|
|
return function(){return f.apply(null, args);};
|
|
}
|
|
|
|
var nonASCIISingleCaseWordChar = /[\u00df\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
|
|
var isWordCharBasic = CodeMirror.isWordChar = function(ch) {
|
|
return /\w/.test(ch) || ch > "\x80" &&
|
|
(ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
|
|
};
|
|
function isWordChar(ch, helper) {
|
|
if (!helper) return isWordCharBasic(ch);
|
|
if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) return true;
|
|
return helper.test(ch);
|
|
}
|
|
|
|
function isEmpty(obj) {
|
|
for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
|
|
return true;
|
|
}
|
|
|
|
// Extending unicode characters. A series of a non-extending char +
|
|
// any number of extending chars is treated as a single unit as far
|
|
// as editing and measuring is concerned. This is not fully correct,
|
|
// since some scripts/fonts/browsers also treat other configurations
|
|
// of code points as a group.
|
|
var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/;
|
|
function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); }
|
|
|
|
// 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") e.appendChild(document.createTextNode(content));
|
|
else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
|
|
return e;
|
|
}
|
|
|
|
var range;
|
|
if (document.createRange) range = function(node, start, end) {
|
|
var r = document.createRange();
|
|
r.setEnd(node, end);
|
|
r.setStart(node, start);
|
|
return r;
|
|
};
|
|
else range = function(node, start, end) {
|
|
var r = document.body.createTextRange();
|
|
try { r.moveToElementText(node.parentNode); }
|
|
catch(e) { return r; }
|
|
r.collapse(true);
|
|
r.moveEnd("character", end);
|
|
r.moveStart("character", start);
|
|
return r;
|
|
};
|
|
|
|
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);
|
|
}
|
|
|
|
var contains = CodeMirror.contains = function(parent, child) {
|
|
if (parent.contains)
|
|
return parent.contains(child);
|
|
while (child = child.parentNode) {
|
|
if (child.nodeType == 11) child = child.host;
|
|
if (child == parent) return true;
|
|
}
|
|
};
|
|
|
|
function activeElt() { return document.activeElement; }
|
|
// Older versions of IE throws unspecified error when touching
|
|
// document.activeElement in some cases (during loading, in iframe)
|
|
if (ie && ie_version < 11) activeElt = function() {
|
|
try { return document.activeElement; }
|
|
catch(e) { return document.body; }
|
|
};
|
|
|
|
function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*"); }
|
|
var rmClass = CodeMirror.rmClass = function(node, cls) {
|
|
var current = node.className;
|
|
var match = classTest(cls).exec(current);
|
|
if (match) {
|
|
var after = current.slice(match.index + match[0].length);
|
|
node.className = current.slice(0, match.index) + (after ? match[1] + after : "");
|
|
}
|
|
};
|
|
var addClass = CodeMirror.addClass = function(node, cls) {
|
|
var current = node.className;
|
|
if (!classTest(cls).test(current)) node.className += (current ? " " : "") + cls;
|
|
};
|
|
function joinClasses(a, b) {
|
|
var as = a.split(" ");
|
|
for (var i = 0; i < as.length; i++)
|
|
if (as[i] && !classTest(as[i]).test(b)) b += " " + as[i];
|
|
return b;
|
|
}
|
|
|
|
// WINDOW-WIDE EVENTS
|
|
|
|
// These must be handled carefully, because naively registering a
|
|
// handler for each editor will cause the editors to never be
|
|
// garbage collected.
|
|
|
|
function forEachCodeMirror(f) {
|
|
if (!document.body.getElementsByClassName) return;
|
|
var byClass = document.body.getElementsByClassName("CodeMirror");
|
|
for (var i = 0; i < byClass.length; i++) {
|
|
var cm = byClass[i].CodeMirror;
|
|
if (cm) f(cm);
|
|
}
|
|
}
|
|
|
|
var globalsRegistered = false;
|
|
function ensureGlobalHandlers() {
|
|
if (globalsRegistered) return;
|
|
registerGlobalHandlers();
|
|
globalsRegistered = true;
|
|
}
|
|
function registerGlobalHandlers() {
|
|
// When the window resizes, we need to refresh active editors.
|
|
var resizeTimer;
|
|
on(window, "resize", function() {
|
|
if (resizeTimer == null) resizeTimer = setTimeout(function() {
|
|
resizeTimer = null;
|
|
forEachCodeMirror(onResize);
|
|
}, 100);
|
|
});
|
|
// When the window loses focus, we want to show the editor as blurred
|
|
on(window, "blur", function() {
|
|
forEachCodeMirror(onBlur);
|
|
});
|
|
}
|
|
|
|
// 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 && ie_version < 9) return false;
|
|
var div = elt('div');
|
|
return "draggable" in div || "dragDrop" in div;
|
|
}();
|
|
|
|
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 && ie_version < 8);
|
|
}
|
|
if (zwspSupported) return elt("span", "\u200b");
|
|
else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
|
|
}
|
|
|
|
// Feature-detect IE's crummy client rect reporting for bidi text
|
|
var badBidiRects;
|
|
function hasBadBidiRects(measure) {
|
|
if (badBidiRects != null) return badBidiRects;
|
|
var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
|
|
var r0 = range(txt, 0, 1).getBoundingClientRect();
|
|
if (!r0 || r0.left == r0.right) return false; // Safari returns null in some cases (#2780)
|
|
var r1 = range(txt, 1, 2).getBoundingClientRect();
|
|
return badBidiRects = (r1.right - r0.right < 3);
|
|
}
|
|
|
|
// See if "".split is the broken IE version, if so, provide an
|
|
// alternative way to split lines.
|
|
var splitLines = CodeMirror.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/);};
|
|
|
|
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";
|
|
})();
|
|
|
|
var badZoomedRects = null;
|
|
function hasBadZoomedRects(measure) {
|
|
if (badZoomedRects != null) return badZoomedRects;
|
|
var node = removeChildrenAndAdd(measure, elt("span", "x"));
|
|
var normal = node.getBoundingClientRect();
|
|
var fromRange = range(node, 0, 1).getBoundingClientRect();
|
|
return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1;
|
|
}
|
|
|
|
// KEY NAMES
|
|
|
|
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: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 107: "=", 109: "-", 127: "Delete",
|
|
173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
|
|
221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
|
|
63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"};
|
|
CodeMirror.keyNames = keyNames;
|
|
(function() {
|
|
// Number keys
|
|
for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = 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(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 = getLine(cm.doc, lineN);
|
|
while (merged = collapsedSpanAtEnd(line)) {
|
|
line = merged.find(1, true).line;
|
|
lineN = null;
|
|
}
|
|
var order = getOrder(line);
|
|
var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
|
|
return Pos(lineN == null ? lineNo(line) : lineN, ch);
|
|
}
|
|
function lineStartSmart(cm, pos) {
|
|
var start = lineStart(cm, pos.line);
|
|
var line = getLine(cm.doc, start.line);
|
|
var order = getOrder(line);
|
|
if (!order || order[0].level == 0) {
|
|
var firstNonWS = Math.max(0, line.text.search(/\S/));
|
|
var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;
|
|
return Pos(start.line, inWS ? 0 : firstNonWS);
|
|
}
|
|
return start;
|
|
}
|
|
|
|
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) {
|
|
bidiOther = null;
|
|
for (var i = 0, found; i < order.length; ++i) {
|
|
var cur = order[i];
|
|
if (cur.from < pos && cur.to > pos) return i;
|
|
if ((cur.from == pos || cur.to == pos)) {
|
|
if (found == null) {
|
|
found = i;
|
|
} else if (compareBidiLevel(order, cur.level, order[found].level)) {
|
|
if (cur.from != cur.to) bidiOther = found;
|
|
return i;
|
|
} else {
|
|
if (cur.from != cur.to) bidiOther = i;
|
|
return found;
|
|
}
|
|
}
|
|
}
|
|
return found;
|
|
}
|
|
|
|
function moveInLine(line, pos, dir, byUnit) {
|
|
if (!byUnit) return pos + dir;
|
|
do pos += dir;
|
|
while (pos > 0 && isExtendingChar(line.text.charAt(pos)));
|
|
return pos;
|
|
}
|
|
|
|
// This 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(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
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// that this (partially) implements.
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// One-char codes used for character types:
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// L (L): Left-to-Right
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// R (R): Right-to-Left
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// r (AL): Right-to-Left Arabic
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// 1 (EN): European Number
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// + (ES): European Number Separator
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// % (ET): European Number Terminator
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// n (AN): Arabic Number
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// , (CS): Common Number Separator
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// m (NSM): Non-Spacing Mark
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// b (BN): Boundary Neutral
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// s (B): Paragraph Separator
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// t (S): Segment Separator
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// w (WS): Whitespace
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// N (ON): Other Neutrals
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// Returns null if characters are ordered as they appear
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// (left-to-right), or an array of sections ({from, to, level}
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// objects) in the order in which they occur visually.
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var bidiOrdering = (function() {
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// Character types for codepoints 0 to 0xff
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var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
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// Character types for codepoints 0x600 to 0x6ff
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var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm";
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function charType(code) {
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if (code <= 0xf7) return lowTypes.charAt(code);
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else if (0x590 <= code && code <= 0x5f4) return "R";
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else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600);
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else if (0x6ee <= code && code <= 0x8ac) return "r";
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else if (0x2000 <= code && code <= 0x200b) return "w";
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else if (code == 0x200c) return "b";
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else return "L";
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}
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var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
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var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
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// Browsers seem to always treat the boundaries of block elements as being L.
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var outerType = "L";
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function BidiSpan(level, from, to) {
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this.level = level;
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this.from = from; this.to = to;
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}
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return function(str) {
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if (!bidiRE.test(str)) return false;
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var len = str.length, types = [];
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for (var i = 0, type; i < len; ++i)
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types.push(type = charType(str.charCodeAt(i)));
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// W1. Examine each non-spacing mark (NSM) in the level run, and
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// change the type of the NSM to the type of the previous
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// character. If the NSM is at the start of the level run, it will
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// get the type of sor.
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for (var i = 0, prev = outerType; i < len; ++i) {
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var type = types[i];
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if (type == "m") types[i] = prev;
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else prev = type;
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}
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// W2. Search backwards from each instance of a European number
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// until the first strong type (R, L, AL, or sor) is found. If an
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// AL is found, change the type of the European number to Arabic
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// number.
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// W3. Change all ALs to R.
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for (var i = 0, cur = outerType; i < len; ++i) {
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var type = types[i];
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if (type == "1" && cur == "r") types[i] = "n";
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else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
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}
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// W4. A single European separator between two European numbers
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// changes to a European number. A single common separator between
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// two numbers of the same type changes to that type.
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for (var i = 1, prev = types[0]; i < len - 1; ++i) {
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var type = types[i];
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if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
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else if (type == "," && prev == types[i+1] &&
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(prev == "1" || prev == "n")) types[i] = prev;
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prev = type;
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}
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// W5. A sequence of European terminators adjacent to European
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// numbers changes to all European numbers.
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// W6. Otherwise, separators and terminators change to Other
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// Neutral.
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for (var i = 0; i < len; ++i) {
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var type = types[i];
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if (type == ",") types[i] = "N";
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else if (type == "%") {
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for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
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var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N";
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for (var j = i; j < end; ++j) types[j] = replace;
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i = end - 1;
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}
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}
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// W7. Search backwards from each instance of a European number
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// until the first strong type (R, L, or sor) is found. If an L is
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// found, then change the type of the European number to L.
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for (var i = 0, cur = outerType; i < len; ++i) {
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var type = types[i];
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if (cur == "L" && type == "1") types[i] = "L";
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else if (isStrong.test(type)) cur = type;
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}
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// N1. A sequence of neutrals takes the direction of the
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// surrounding strong text if the text on both sides has the same
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// direction. European and Arabic numbers act as if they were R in
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// terms of their influence on neutrals. Start-of-level-run (sor)
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// and end-of-level-run (eor) are used at level run boundaries.
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// N2. Any remaining neutrals take the embedding direction.
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for (var i = 0; i < len; ++i) {
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if (isNeutral.test(types[i])) {
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for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
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var before = (i ? types[i-1] : outerType) == "L";
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var after = (end < len ? types[end] : outerType) == "L";
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var replace = before || after ? "L" : "R";
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for (var j = i; j < end; ++j) types[j] = replace;
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i = end - 1;
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}
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}
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// Here we depart from the documented algorithm, in order to avoid
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// building up an actual levels array. Since there are only three
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// levels (0, 1, 2) in an implementation that doesn't take
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// explicit embedding into account, we can build up the order on
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// the fly, without following the level-based algorithm.
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var order = [], m;
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for (var i = 0; i < len;) {
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if (countsAsLeft.test(types[i])) {
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var start = i;
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for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
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order.push(new BidiSpan(0, start, i));
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} else {
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var pos = i, at = order.length;
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for (++i; i < len && types[i] != "L"; ++i) {}
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for (var j = pos; j < i;) {
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if (countsAsNum.test(types[j])) {
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if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j));
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var nstart = j;
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for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
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order.splice(at, 0, new BidiSpan(2, nstart, j));
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pos = j;
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} else ++j;
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}
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if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i));
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}
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}
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if (order[0].level == 1 && (m = str.match(/^\s+/))) {
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order[0].from = m[0].length;
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order.unshift(new BidiSpan(0, 0, m[0].length));
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}
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if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
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lst(order).to -= m[0].length;
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order.push(new BidiSpan(0, len - m[0].length, len));
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}
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if (order[0].level != lst(order).level)
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order.push(new BidiSpan(order[0].level, len, len));
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return order;
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};
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})();
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// THE END
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CodeMirror.version = "4.13.0";
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return CodeMirror;
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});
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