-// CodeMirror is the only global var we claim
-window.CodeMirror = (function() {
+// This is CodeMirror (http://codemirror.net), a code editor
+// implemented in JavaScript on top of the browser's DOM.
+//
+// You can find some technical background for some of the code below
+// at http://marijnhaverbeke.nl/blog/#cm-internals .
+
+(function(mod) {
+ if (typeof exports == "object" && typeof module == "object") // CommonJS
+ module.exports = mod();
+ else if (typeof define == "function" && define.amd) // AMD
+ return define([], mod);
+ else // Plain browser env
+ this.CodeMirror = mod();
+})(function() {
"use strict";
// BROWSER SNIFFING
- // Crude, but necessary to handle a number of hard-to-feature-detect
- // bugs and behavior differences.
+ // Kludges for bugs and behavior differences that can't be feature
+ // detected are enabled based on userAgent etc sniffing.
+
var gecko = /gecko\/\d/i.test(navigator.userAgent);
- // IE11 currently doesn't count as 'ie', since it has almost none of
- // the same bugs as earlier versions. Use ie_gt10 to handle
- // incompatibilities in that version.
- var old_ie = /MSIE \d/.test(navigator.userAgent);
- var ie_lt8 = old_ie && (document.documentMode == null || document.documentMode < 8);
- var ie_lt9 = old_ie && (document.documentMode == null || document.documentMode < 9);
- var ie_gt10 = /Trident\/([7-9]|\d{2,})\./.test(navigator.userAgent);
- var ie = old_ie || ie_gt10;
+ // ie_uptoN means Internet Explorer version N or lower
+ var ie_upto10 = /MSIE \d/.test(navigator.userAgent);
+ var ie_upto7 = ie_upto10 && (document.documentMode == null || document.documentMode < 8);
+ var ie_upto8 = ie_upto10 && (document.documentMode == null || document.documentMode < 9);
+ var ie_upto9 = ie_upto10 && (document.documentMode == null || document.documentMode < 10);
+ var ie_11up = /Trident\/([7-9]|\d{2,})\./.test(navigator.userAgent);
+ var ie = ie_upto10 || ie_11up;
var webkit = /WebKit\//.test(navigator.userAgent);
var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
var chrome = /Chrome\//.test(navigator.userAgent);
- var opera = /Opera\//.test(navigator.userAgent);
+ var presto = /Opera\//.test(navigator.userAgent);
var safari = /Apple Computer/.test(navigator.vendor);
var khtml = /KHTML\//.test(navigator.userAgent);
- var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent);
var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
var phantom = /PhantomJS/.test(navigator.userAgent);
var mac = ios || /Mac/.test(navigator.platform);
var windows = /win/i.test(navigator.platform);
- var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
- if (opera_version) opera_version = Number(opera_version[1]);
- if (opera_version && opera_version >= 15) { opera = false; webkit = true; }
+ var presto_version = presto && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
+ if (presto_version) presto_version = Number(presto_version[1]);
+ if (presto_version && presto_version >= 15) { presto = false; webkit = true; }
// Some browsers use the wrong event properties to signal cmd/ctrl on OS X
- var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11));
- var captureMiddleClick = gecko || (old_ie && !ie_lt9);
+ var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));
+ var captureRightClick = gecko || (ie && !ie_upto8);
- // Optimize some code when these features are not used
+ // Optimize some code when these features are not used.
var sawReadOnlySpans = false, sawCollapsedSpans = false;
- // CONSTRUCTOR
+ // EDITOR CONSTRUCTOR
+
+ // A CodeMirror instance represents an editor. This is the object
+ // that user code is usually dealing with.
function CodeMirror(place, options) {
if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);
this.options = options = options || {};
// Determine effective options based on given values and defaults.
- for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt))
- options[opt] = defaults[opt];
+ copyObj(defaults, options, false);
setGuttersForLineNumbers(options);
- var docStart = typeof options.value == "string" ? 0 : options.value.first;
- var display = this.display = makeDisplay(place, docStart);
+ var doc = options.value;
+ if (typeof doc == "string") doc = new Doc(doc, options.mode);
+ this.doc = doc;
+
+ var display = this.display = new Display(place, doc);
display.wrapper.CodeMirror = this;
updateGutters(this);
- if (options.autofocus && !mobile) focusInput(this);
-
- this.state = {keyMaps: [],
- overlays: [],
- modeGen: 0,
- overwrite: false, focused: false,
- suppressEdits: false,
- pasteIncoming: false, cutIncoming: false,
- draggingText: false,
- highlight: new Delayed()};
-
themeChanged(this);
if (options.lineWrapping)
this.display.wrapper.className += " CodeMirror-wrap";
+ if (options.autofocus && !mobile) focusInput(this);
- var doc = options.value;
- if (typeof doc == "string") doc = new Doc(options.value, options.mode);
- operation(this, attachDoc)(this, doc);
+ this.state = {
+ keyMaps: [], // stores maps added by addKeyMap
+ overlays: [], // highlighting overlays, as added by addOverlay
+ modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info
+ overwrite: false, focused: false,
+ suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
+ pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in readInput
+ draggingText: false,
+ highlight: new Delayed() // stores highlight worker timeout
+ };
// Override magic textarea content restore that IE sometimes does
// on our hidden textarea on reload
- if (old_ie) setTimeout(bind(resetInput, this, true), 20);
+ if (ie_upto10) setTimeout(bind(resetInput, this, true), 20);
registerEventHandlers(this);
- // IE throws unspecified error in certain cases, when
- // trying to access activeElement before onload
- var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { }
- if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20);
- else onBlur(this);
- operation(this, function() {
- for (var opt in optionHandlers)
- if (optionHandlers.propertyIsEnumerable(opt))
- optionHandlers[opt](this, options[opt], Init);
- for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
- })();
+ var cm = this;
+ runInOp(this, function() {
+ cm.curOp.forceUpdate = true;
+ attachDoc(cm, doc);
+
+ if ((options.autofocus && !mobile) || activeElt() == display.input)
+ setTimeout(bind(onFocus, cm), 20);
+ else
+ onBlur(cm);
+
+ for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt))
+ optionHandlers[opt](cm, options[opt], Init);
+ for (var i = 0; i < initHooks.length; ++i) initHooks[i](cm);
+ });
}
// DISPLAY CONSTRUCTOR
- function makeDisplay(place, docStart) {
- var d = {};
+ // The display handles the DOM integration, both for input reading
+ // and content drawing. It holds references to DOM nodes and
+ // display-related state.
+
+ function Display(place, doc) {
+ var d = this;
- var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none; font-size: 4px;");
+ // The semihidden textarea that is focused when the editor is
+ // focused, and receives input.
+ var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none");
+ // The textarea is kept positioned near the cursor to prevent the
+ // fact that it'll be scrolled into view on input from scrolling
+ // our fake cursor out of view. On webkit, when wrap=off, paste is
+ // very slow. So make the area wide instead.
if (webkit) input.style.width = "1000px";
else input.setAttribute("wrap", "off");
- // if border: 0; -- iOS fails to open keyboard (issue #1287)
+ // If border: 0; -- iOS fails to open keyboard (issue #1287)
if (ios) input.style.border = "1px solid black";
input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false");
// Wraps and hides input textarea
d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
- // The actual fake scrollbars.
- d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar");
- d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar");
+ // The fake scrollbar elements.
+ d.scrollbarH = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
+ d.scrollbarV = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
+ // Covers bottom-right square when both scrollbars are present.
d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
+ // Covers bottom of gutter when coverGutterNextToScrollbar is on
+ // and h scrollbar is present.
d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
- // DIVs containing the selection and the actual code
+ // Will contain the actual code, positioned to cover the viewport.
d.lineDiv = elt("div", null, "CodeMirror-code");
+ // Elements are added to these to represent selection and cursors.
d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
- // Blinky cursor, and element used to ensure cursor fits at the end of a line
- d.cursor = elt("div", "\u00a0", "CodeMirror-cursor");
- // Secondary cursor, shown when on a 'jump' in bi-directional text
- d.otherCursor = elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor");
- // Used to measure text size
+ d.cursorDiv = elt("div", null, "CodeMirror-cursors");
+ // A visibility: hidden element used to find the size of things.
d.measure = elt("div", null, "CodeMirror-measure");
+ // When lines outside of the viewport are measured, they are drawn in this.
+ d.lineMeasure = elt("div", null, "CodeMirror-measure");
// Wraps everything that needs to exist inside the vertically-padded coordinate system
- d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor],
- null, "position: relative; outline: none");
- // Moved around its parent to cover visible view
+ d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
+ null, "position: relative; outline: none");
+ // Moved around its parent to cover visible view.
d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
- // Set to the height of the text, causes scrolling
+ // Set to the height of the document, allowing scrolling.
d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
- // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers
+ // Behavior of elts with overflow: auto and padding is
+ // inconsistent across browsers. This is used to ensure the
+ // scrollable area is big enough.
d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;");
- // Will contain the gutters, if any
+ // Will contain the gutters, if any.
d.gutters = elt("div", null, "CodeMirror-gutters");
d.lineGutter = null;
- // Provides scrolling
+ // Actual scrollable element.
d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
d.scroller.setAttribute("tabIndex", "-1");
// The element in which the editor lives.
d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV,
d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
- // Work around IE7 z-index bug
- if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
- if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper);
+ // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
+ if (ie_upto7) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
// Needed to hide big blue blinking cursor on Mobile Safari
if (ios) input.style.width = "0px";
if (!webkit) d.scroller.draggable = true;
// Needed to handle Tab key in KHTML
if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; }
// Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
- else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px";
-
- // Current visible range (may be bigger than the view window).
- d.viewOffset = d.lastSizeC = 0;
- d.showingFrom = d.showingTo = docStart;
+ if (ie_upto7) d.scrollbarH.style.minHeight = d.scrollbarV.style.minWidth = "18px";
+
+ if (place.appendChild) place.appendChild(d.wrapper);
+ else place(d.wrapper);
+
+ // Current rendered range (may be bigger than the view window).
+ d.viewFrom = d.viewTo = doc.first;
+ // Information about the rendered lines.
+ d.view = [];
+ // Holds info about a single rendered line when it was rendered
+ // for measurement, while not in view.
+ d.externalMeasured = null;
+ // Empty space (in pixels) above the view
+ d.viewOffset = 0;
+ d.lastSizeC = 0;
+ d.updateLineNumbers = null;
// Used to only resize the line number gutter when necessary (when
// the amount of lines crosses a boundary that makes its width change)
d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
// See readInput and resetInput
d.prevInput = "";
- // Set to true when a non-horizontal-scrolling widget is added. As
- // an optimization, widget aligning is skipped when d is false.
+ // Set to true when a non-horizontal-scrolling line widget is
+ // added. As an optimization, line widget aligning is skipped when
+ // this is false.
d.alignWidgets = false;
- // Flag that indicates whether we currently expect input to appear
- // (after some event like 'keypress' or 'input') and are polling
- // intensively.
+ // Flag that indicates whether we expect input to appear real soon
+ // now (after some event like 'keypress' or 'input') and are
+ // polling intensively.
d.pollingFast = false;
// Self-resetting timeout for the poller
d.poll = new Delayed();
- d.cachedCharWidth = d.cachedTextHeight = null;
- d.measureLineCache = [];
- d.measureLineCachePos = 0;
+ d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
// Tracks when resetInput has punted to just putting a short
- // string instead of the (large) selection.
+ // string into the textarea instead of the full selection.
d.inaccurateSelection = false;
// Tracks the maximum line length so that the horizontal scrollbar
// Used for measuring wheel scrolling granularity
d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;
- return d;
+ // True when shift is held down.
+ d.shift = false;
}
// STATE UPDATES
function wrappingChanged(cm) {
if (cm.options.lineWrapping) {
- cm.display.wrapper.className += " CodeMirror-wrap";
+ addClass(cm.display.wrapper, "CodeMirror-wrap");
cm.display.sizer.style.minWidth = "";
} else {
- cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", "");
- computeMaxLength(cm);
+ rmClass(cm.display.wrapper, "CodeMirror-wrap");
+ findMaxLine(cm);
}
estimateLineHeights(cm);
regChange(cm);
setTimeout(function(){updateScrollbars(cm);}, 100);
}
+ // Returns a function that estimates the height of a line, to use as
+ // first approximation until the line becomes visible (and is thus
+ // properly measurable).
function estimateHeight(cm) {
var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
return function(line) {
- if (lineIsHidden(cm.doc, line))
- return 0;
- else if (wrapping)
- return (Math.ceil(line.text.length / perLine) || 1) * th;
+ if (lineIsHidden(cm.doc, line)) return 0;
+
+ var widgetsHeight = 0;
+ if (line.widgets) for (var i = 0; i < line.widgets.length; i++) {
+ if (line.widgets[i].height) widgetsHeight += line.widgets[i].height;
+ }
+
+ if (wrapping)
+ return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th;
else
- return th;
+ return widgetsHeight + th;
};
}
setTimeout(function(){alignHorizontally(cm);}, 20);
}
+ // Rebuild the gutter elements, ensure the margin to the left of the
+ // code matches their width.
function updateGutters(cm) {
var gutters = cm.display.gutters, specs = cm.options.gutters;
removeChildren(gutters);
}
}
gutters.style.display = i ? "" : "none";
+ updateGutterSpace(cm);
}
- function lineLength(doc, line) {
+ function updateGutterSpace(cm) {
+ var width = cm.display.gutters.offsetWidth;
+ cm.display.sizer.style.marginLeft = width + "px";
+ cm.display.scrollbarH.style.left = cm.options.fixedGutter ? width + "px" : 0;
+ }
+
+ // Compute the character length of a line, taking into account
+ // collapsed ranges (see markText) that might hide parts, and join
+ // other lines onto it.
+ function lineLength(line) {
if (line.height == 0) return 0;
var len = line.text.length, merged, cur = line;
while (merged = collapsedSpanAtStart(cur)) {
- var found = merged.find();
- cur = getLine(doc, found.from.line);
+ var found = merged.find(0, true);
+ cur = found.from.line;
len += found.from.ch - found.to.ch;
}
cur = line;
while (merged = collapsedSpanAtEnd(cur)) {
- var found = merged.find();
+ var found = merged.find(0, true);
len -= cur.text.length - found.from.ch;
- cur = getLine(doc, found.to.line);
+ cur = found.to.line;
len += cur.text.length - found.to.ch;
}
return len;
}
- function computeMaxLength(cm) {
+ // Find the longest line in the document.
+ function findMaxLine(cm) {
var d = cm.display, doc = cm.doc;
d.maxLine = getLine(doc, doc.first);
- d.maxLineLength = lineLength(doc, d.maxLine);
+ d.maxLineLength = lineLength(d.maxLine);
d.maxLineChanged = true;
doc.iter(function(line) {
- var len = lineLength(doc, line);
+ var len = lineLength(line);
if (len > d.maxLineLength) {
d.maxLineLength = len;
d.maxLine = line;
// SCROLLBARS
+ // Prepare DOM reads needed to update the scrollbars. Done in one
+ // shot to minimize update/measure roundtrips.
+ function measureForScrollbars(cm) {
+ var scroll = cm.display.scroller;
+ return {
+ clientHeight: scroll.clientHeight,
+ barHeight: cm.display.scrollbarV.clientHeight,
+ scrollWidth: scroll.scrollWidth, clientWidth: scroll.clientWidth,
+ barWidth: cm.display.scrollbarH.clientWidth,
+ docHeight: Math.round(cm.doc.height + paddingVert(cm.display))
+ };
+ }
+
// Re-synchronize the fake scrollbars with the actual size of the
- // content. Optionally force a scrollTop.
- function updateScrollbars(cm) {
- var d = cm.display, docHeight = cm.doc.height;
- var totalHeight = docHeight + paddingVert(d);
- d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px";
- d.gutters.style.height = Math.max(totalHeight, d.scroller.clientHeight - scrollerCutOff) + "px";
- var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight);
- var needsH = d.scroller.scrollWidth > (d.scroller.clientWidth + 1);
- var needsV = scrollHeight > (d.scroller.clientHeight + 1);
+ // content.
+ function updateScrollbars(cm, measure) {
+ if (!measure) measure = measureForScrollbars(cm);
+ var d = cm.display;
+ var scrollHeight = measure.docHeight + scrollerCutOff;
+ var needsH = measure.scrollWidth > measure.clientWidth;
+ var needsV = scrollHeight > measure.clientHeight;
if (needsV) {
d.scrollbarV.style.display = "block";
d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0";
// A bug in IE8 can cause this value to be negative, so guard it.
d.scrollbarV.firstChild.style.height =
- Math.max(0, scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px";
+ Math.max(0, scrollHeight - measure.clientHeight + (measure.barHeight || d.scrollbarV.clientHeight)) + "px";
} else {
d.scrollbarV.style.display = "";
d.scrollbarV.firstChild.style.height = "0";
d.scrollbarH.style.display = "block";
d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0";
d.scrollbarH.firstChild.style.width =
- (d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px";
+ (measure.scrollWidth - measure.clientWidth + (measure.barWidth || d.scrollbarH.clientWidth)) + "px";
} else {
d.scrollbarH.style.display = "";
d.scrollbarH.firstChild.style.width = "0";
d.gutterFiller.style.width = d.gutters.offsetWidth + "px";
} else d.gutterFiller.style.display = "";
- if (mac_geLion && scrollbarWidth(d.measure) === 0) {
- d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px";
- d.scrollbarV.style.pointerEvents = d.scrollbarH.style.pointerEvents = "none";
+ if (!cm.state.checkedOverlayScrollbar && measure.clientHeight > 0) {
+ if (scrollbarWidth(d.measure) === 0) {
+ var w = mac && !mac_geMountainLion ? "12px" : "18px";
+ d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = w;
+ var barMouseDown = function(e) {
+ if (e_target(e) != d.scrollbarV && e_target(e) != d.scrollbarH)
+ operation(cm, onMouseDown)(e);
+ };
+ on(d.scrollbarV, "mousedown", barMouseDown);
+ on(d.scrollbarH, "mousedown", barMouseDown);
+ }
+ cm.state.checkedOverlayScrollbar = true;
}
}
+ // 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 = display.scroller.scrollTop, height = display.wrapper.clientHeight;
- if (typeof viewPort == "number") top = viewPort;
- else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;}
+ var top = viewPort && viewPort.top != null ? viewPort.top : display.scroller.scrollTop;
top = Math.floor(top - paddingTop(display));
- var bottom = Math.ceil(top + height);
- return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)};
+ var bottom = viewPort && viewPort.bottom != null ? viewPort.bottom : top + display.wrapper.clientHeight;
+
+ var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
+ // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
+ // forces those lines into the viewport (if possible).
+ if (viewPort && viewPort.ensure) {
+ var ensureFrom = viewPort.ensure.from.line, ensureTo = viewPort.ensure.to.line;
+ if (ensureFrom < from)
+ return {from: ensureFrom,
+ to: lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight)};
+ if (Math.min(ensureTo, doc.lastLine()) >= to)
+ return {from: lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight),
+ to: ensureTo};
+ }
+ return {from: from, to: to};
}
// LINE NUMBERS
+ // Re-align line numbers and gutter marks to compensate for
+ // horizontal scrolling.
function alignHorizontally(cm) {
- var display = cm.display;
+ 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, l = comp + "px";
- for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) {
- for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l;
+ 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;
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 getRect(display.scroller).left - getRect(display.sizer).left;
+ return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;
}
// DISPLAY DRAWING
- function updateDisplay(cm, changes, viewPort, forced) {
- var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo, updated;
+ // Updates the display, selection, and scrollbars, using the
+ // information in display.view to find out which nodes are no longer
+ // up-to-date. Tries to bail out early when no changes are needed,
+ // unless forced is true.
+ // Returns true if an actual update happened, false otherwise.
+ function updateDisplay(cm, viewPort, forced) {
+ var oldFrom = cm.display.viewFrom, oldTo = cm.display.viewTo, updated;
var visible = visibleLines(cm.display, cm.doc, viewPort);
for (var first = true;; first = false) {
var oldWidth = cm.display.scroller.clientWidth;
- if (!updateDisplayInner(cm, changes, visible, forced)) break;
+ if (!updateDisplayInner(cm, visible, forced)) break;
updated = true;
- changes = [];
+
+ // If the max line changed since it was last measured, measure it,
+ // and ensure the document's width matches it.
+ if (cm.display.maxLineChanged && !cm.options.lineWrapping)
+ adjustContentWidth(cm);
+
+ var barMeasure = measureForScrollbars(cm);
updateSelection(cm);
- updateScrollbars(cm);
+ setDocumentHeight(cm, barMeasure);
+ updateScrollbars(cm, barMeasure);
+ if (webkit && cm.options.lineWrapping)
+ checkForWebkitWidthBug(cm, barMeasure); // (Issue #2420)
if (first && cm.options.lineWrapping && oldWidth != cm.display.scroller.clientWidth) {
forced = true;
continue;
}
forced = false;
- // Clip forced viewport to actual scrollable area
- if (viewPort)
- viewPort = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight,
- typeof viewPort == "number" ? viewPort : viewPort.top);
+ // Clip forced viewport to actual scrollable area.
+ if (viewPort && viewPort.top != null)
+ viewPort = {top: Math.min(barMeasure.docHeight - scrollerCutOff - barMeasure.clientHeight, viewPort.top)};
+ // Updated line heights might result in the drawn area not
+ // actually covering the viewport. Keep looping until it does.
visible = visibleLines(cm.display, cm.doc, viewPort);
- if (visible.from >= cm.display.showingFrom && visible.to <= cm.display.showingTo)
+ if (visible.from >= cm.display.viewFrom && visible.to <= cm.display.viewTo)
break;
}
+ cm.display.updateLineNumbers = null;
if (updated) {
signalLater(cm, "update", cm);
- if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo)
- signalLater(cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo);
+ if (cm.display.viewFrom != oldFrom || cm.display.viewTo != oldTo)
+ signalLater(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
}
return updated;
}
- // Uses a set of changes plus the current scroll position to
- // determine which DOM updates have to be made, and makes the
- // updates.
- function updateDisplayInner(cm, changes, visible, forced) {
+ // Does the actual updating of the line display. Bails out
+ // (returning false) when there is nothing to be done and forced is
+ // false.
+ function updateDisplayInner(cm, visible, forced) {
var display = cm.display, doc = cm.doc;
if (!display.wrapper.offsetWidth) {
- display.showingFrom = display.showingTo = doc.first;
- display.viewOffset = 0;
+ resetView(cm);
return;
}
// Bail out if the visible area is already rendered and nothing changed.
- if (!forced && changes.length == 0 &&
- visible.from > display.showingFrom && visible.to < display.showingTo)
+ if (!forced && visible.from >= display.viewFrom && visible.to <= display.viewTo &&
+ countDirtyView(cm) == 0)
return;
if (maybeUpdateLineNumberWidth(cm))
- changes = [{from: doc.first, to: doc.first + doc.size}];
- var gutterW = display.sizer.style.marginLeft = display.gutters.offsetWidth + "px";
- display.scrollbarH.style.left = cm.options.fixedGutter ? gutterW : "0";
-
- // Used to determine which lines need their line numbers updated
- var positionsChangedFrom = Infinity;
- if (cm.options.lineNumbers)
- for (var i = 0; i < changes.length; ++i)
- if (changes[i].diff && changes[i].from < positionsChangedFrom) { positionsChangedFrom = changes[i].from; }
+ resetView(cm);
+ var dims = getDimensions(cm);
+ // Compute a suitable new viewport (from & to)
var end = doc.first + doc.size;
var from = Math.max(visible.from - cm.options.viewportMargin, doc.first);
var to = Math.min(end, visible.to + cm.options.viewportMargin);
- if (display.showingFrom < from && from - display.showingFrom < 20) from = Math.max(doc.first, display.showingFrom);
- if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(end, display.showingTo);
+ if (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 = lineNo(visualLine(doc, getLine(doc, from)));
- while (to < end && lineIsHidden(doc, getLine(doc, to))) ++to;
- }
-
- // Create a range of theoretically intact lines, and punch holes
- // in that using the change info.
- var intact = [{from: Math.max(display.showingFrom, doc.first),
- to: Math.min(display.showingTo, end)}];
- if (intact[0].from >= intact[0].to) intact = [];
- else intact = computeIntact(intact, changes);
- // When merged lines are present, we might have to reduce the
- // intact ranges because changes in continued fragments of the
- // intact lines do require the lines to be redrawn.
- if (sawCollapsedSpans)
- for (var i = 0; i < intact.length; ++i) {
- var range = intact[i], merged;
- while (merged = collapsedSpanAtEnd(getLine(doc, range.to - 1))) {
- var newTo = merged.find().from.line;
- if (newTo > range.from) range.to = newTo;
- else { intact.splice(i--, 1); break; }
- }
- }
-
- // Clip off the parts that won't be visible
- var intactLines = 0;
- for (var i = 0; i < intact.length; ++i) {
- var range = intact[i];
- if (range.from < from) range.from = from;
- if (range.to > to) range.to = to;
- if (range.from >= range.to) intact.splice(i--, 1);
- else intactLines += range.to - range.from;
+ from = visualLineNo(cm.doc, from);
+ to = visualLineEndNo(cm.doc, to);
}
- if (!forced && intactLines == to - from && from == display.showingFrom && to == display.showingTo) {
- updateViewOffset(cm);
- return;
- }
- intact.sort(function(a, b) {return a.from - b.from;});
- // Avoid crashing on IE's "unspecified error" when in iframes
- try {
- var focused = document.activeElement;
- } catch(e) {}
- if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none";
- patchDisplay(cm, from, to, intact, positionsChangedFrom);
- display.lineDiv.style.display = "";
- if (focused && document.activeElement != focused && focused.offsetHeight) focused.focus();
-
- var different = from != display.showingFrom || to != display.showingTo ||
+ var different = from != display.viewFrom || to != display.viewTo ||
display.lastSizeC != display.wrapper.clientHeight;
- // This is just a bogus formula that detects when the editor is
- // resized or the font size changes.
+ adjustView(cm, from, to);
+
+ display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
+ // Position the mover div to align with the current scroll position
+ cm.display.mover.style.top = display.viewOffset + "px";
+
+ var toUpdate = countDirtyView(cm);
+ if (!different && toUpdate == 0 && !forced) return;
+
+ // For big changes, we hide the enclosing element during the
+ // update, since that speeds up the operations on most browsers.
+ var focused = activeElt();
+ if (toUpdate > 4) display.lineDiv.style.display = "none";
+ patchDisplay(cm, display.updateLineNumbers, dims);
+ if (toUpdate > 4) display.lineDiv.style.display = "";
+ // There might have been a widget with a focused element that got
+ // hidden or updated, if so re-focus it.
+ if (focused && activeElt() != focused && focused.offsetHeight) focused.focus();
+
+ // Prevent selection and cursors from interfering with the scroll
+ // width.
+ removeChildren(display.cursorDiv);
+ removeChildren(display.selectionDiv);
+
if (different) {
display.lastSizeC = display.wrapper.clientHeight;
startWorker(cm, 400);
}
- display.showingFrom = from; display.showingTo = to;
- display.gutters.style.height = "";
updateHeightsInViewport(cm);
- updateViewOffset(cm);
return true;
}
+ function adjustContentWidth(cm) {
+ var display = cm.display;
+ var width = measureChar(cm, display.maxLine, display.maxLine.text.length).left;
+ display.maxLineChanged = false;
+ var minWidth = Math.max(0, width + 3);
+ var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + minWidth + scrollerCutOff - display.scroller.clientWidth);
+ display.sizer.style.minWidth = minWidth + "px";
+ if (maxScrollLeft < cm.doc.scrollLeft)
+ setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true);
+ }
+
+ function setDocumentHeight(cm, measure) {
+ cm.display.sizer.style.minHeight = cm.display.heightForcer.style.top = measure.docHeight + "px";
+ cm.display.gutters.style.height = Math.max(measure.docHeight, measure.clientHeight - scrollerCutOff) + "px";
+ }
+
+
+ function checkForWebkitWidthBug(cm, measure) {
+ // Work around Webkit bug where it sometimes reserves space for a
+ // non-existing phantom scrollbar in the scroller (Issue #2420)
+ if (cm.display.sizer.offsetWidth + cm.display.gutters.offsetWidth < cm.display.scroller.clientWidth - 1) {
+ cm.display.sizer.style.minHeight = cm.display.heightForcer.style.top = "0px";
+ cm.display.gutters.style.height = measure.docHeight + "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 node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) {
- if (ie_lt8) {
- var bot = node.offsetTop + node.offsetHeight;
+ for (var i = 0; i < display.view.length; i++) {
+ var cur = display.view[i], height;
+ if (cur.hidden) continue;
+ if (ie_upto7) {
+ var bot = cur.node.offsetTop + cur.node.offsetHeight;
height = bot - prevBottom;
prevBottom = bot;
} else {
- var box = getRect(node);
+ var box = cur.node.getBoundingClientRect();
height = box.bottom - box.top;
}
- var diff = node.lineObj.height - height;
+ var diff = cur.line.height - height;
if (height < 2) height = textHeight(display);
if (diff > .001 || diff < -.001) {
- updateLineHeight(node.lineObj, height);
- var widgets = node.lineObj.widgets;
- if (widgets) for (var i = 0; i < widgets.length; ++i)
- widgets[i].height = widgets[i].node.offsetHeight;
+ updateLineHeight(cur.line, height);
+ updateWidgetHeight(cur.line);
+ if (cur.rest) for (var j = 0; j < cur.rest.length; j++)
+ updateWidgetHeight(cur.rest[j]);
}
}
}
- function updateViewOffset(cm) {
- var off = cm.display.viewOffset = heightAtLine(cm, getLine(cm.doc, cm.display.showingFrom));
- // Position the mover div to align with the current virtual scroll position
- cm.display.mover.style.top = off + "px";
- }
-
- function computeIntact(intact, changes) {
- for (var i = 0, l = changes.length || 0; i < l; ++i) {
- var change = changes[i], intact2 = [], diff = change.diff || 0;
- for (var j = 0, l2 = intact.length; j < l2; ++j) {
- var range = intact[j];
- if (change.to <= range.from && change.diff) {
- intact2.push({from: range.from + diff, to: range.to + diff});
- } else if (change.to <= range.from || change.from >= range.to) {
- intact2.push(range);
- } else {
- if (change.from > range.from)
- intact2.push({from: range.from, to: change.from});
- if (change.to < range.to)
- intact2.push({from: change.to + diff, to: range.to + diff});
- }
- }
- intact = intact2;
- }
- return intact;
+ // Read and store the height of line widgets associated with the
+ // given line.
+ function updateWidgetHeight(line) {
+ if (line.widgets) for (var i = 0; i < line.widgets.length; ++i)
+ line.widgets[i].height = line.widgets[i].node.offsetHeight;
}
+ // Do a bulk-read of the DOM positions and sizes needed to draw the
+ // view, so that we don't interleave reading and writing to the DOM.
function getDimensions(cm) {
var d = cm.display, left = {}, width = {};
for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
wrapperWidth: d.wrapper.clientWidth};
}
- function patchDisplay(cm, from, to, intact, updateNumbersFrom) {
- var dims = getDimensions(cm);
+ // 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;
- if (!intact.length && (!webkit || !cm.display.currentWheelTarget))
- removeChildren(display.lineDiv);
var container = display.lineDiv, cur = container.firstChild;
function rm(node) {
var next = node.nextSibling;
- if (webkit && mac && cm.display.currentWheelTarget == node) {
+ // Works around a throw-scroll bug in OS X Webkit
+ if (webkit && mac && cm.display.currentWheelTarget == node)
node.style.display = "none";
- node.lineObj = null;
- } else {
+ else
node.parentNode.removeChild(node);
- }
return next;
}
- var nextIntact = intact.shift(), lineN = from;
- cm.doc.iter(from, to, function(line) {
- if (nextIntact && nextIntact.to == lineN) nextIntact = intact.shift();
- if (lineIsHidden(cm.doc, line)) {
- if (line.height != 0) updateLineHeight(line, 0);
- if (line.widgets && cur && cur.previousSibling) for (var i = 0; i < line.widgets.length; ++i) {
- var w = line.widgets[i];
- if (w.showIfHidden) {
- var prev = cur.previousSibling;
- if (/pre/i.test(prev.nodeName)) {
- var wrap = elt("div", null, null, "position: relative");
- prev.parentNode.replaceChild(wrap, prev);
- wrap.appendChild(prev);
- prev = wrap;
- }
- var wnode = prev.appendChild(elt("div", [w.node], "CodeMirror-linewidget"));
- if (!w.handleMouseEvents) wnode.ignoreEvents = true;
- positionLineWidget(w, wnode, prev, dims);
- }
+ 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);
}
- } else if (nextIntact && nextIntact.from <= lineN && nextIntact.to > lineN) {
- // This line is intact. Skip to the actual node. Update its
- // line number if needed.
- while (cur.lineObj != line) cur = rm(cur);
- if (lineNumbers && updateNumbersFrom <= lineN && cur.lineNumber)
- setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineN));
- cur = cur.nextSibling;
- } else {
- // For lines with widgets, make an attempt to find and reuse
- // the existing element, so that widgets aren't needlessly
- // removed and re-inserted into the dom
- if (line.widgets) for (var j = 0, search = cur, reuse; search && j < 20; ++j, search = search.nextSibling)
- if (search.lineObj == line && /div/i.test(search.nodeName)) { reuse = search; break; }
- // This line needs to be generated.
- var lineNode = buildLineElement(cm, line, lineN, dims, reuse);
- if (lineNode != reuse) {
- container.insertBefore(lineNode, cur);
- } else {
- while (cur != reuse) cur = rm(cur);
- cur = cur.nextSibling;
+ if (updateNumber) {
+ removeChildren(lineView.lineNumber);
+ lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
}
-
- lineNode.lineObj = line;
+ cur = lineView.node.nextSibling;
}
- ++lineN;
- });
+ lineN += lineView.size;
+ }
while (cur) cur = rm(cur);
}
- function buildLineElement(cm, line, lineNo, dims, reuse) {
- var built = buildLineContent(cm, line), lineElement = built.pre;
- var markers = line.gutterMarkers, display = cm.display, wrap;
-
- var bgClass = built.bgClass ? built.bgClass + " " + (line.bgClass || "") : line.bgClass;
- if (!cm.options.lineNumbers && !markers && !bgClass && !line.wrapClass && !line.widgets)
- return lineElement;
+ // 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 again, and have the extra elements added to the
- // wrapper div
+ // Lines with gutter elements, widgets or a background class need to
+ // be wrapped, and have the extra elements added to the wrapper div
+ function ensureLineWrapped(lineView) {
+ if (lineView.node == lineView.text) {
+ lineView.node = elt("div", null, null, "position: relative");
+ if (lineView.text.parentNode)
+ lineView.text.parentNode.replaceChild(lineView.node, lineView.text);
+ lineView.node.appendChild(lineView.text);
+ if (ie_upto7) lineView.node.style.zIndex = 2;
+ }
+ return lineView.node;
+ }
- if (reuse) {
- reuse.alignable = null;
- var isOk = true, widgetsSeen = 0, insertBefore = null;
- for (var n = reuse.firstChild, next; n; n = next) {
- next = n.nextSibling;
- if (!/\bCodeMirror-linewidget\b/.test(n.className)) {
- reuse.removeChild(n);
- } else {
- for (var i = 0; i < line.widgets.length; ++i) {
- var widget = line.widgets[i];
- if (widget.node == n.firstChild) {
- if (!widget.above && !insertBefore) insertBefore = n;
- positionLineWidget(widget, n, reuse, dims);
- ++widgetsSeen;
- break;
- }
- }
- if (i == line.widgets.length) { isOk = false; break; }
- }
- }
- reuse.insertBefore(lineElement, insertBefore);
- if (isOk && widgetsSeen == line.widgets.length) {
- wrap = reuse;
- reuse.className = line.wrapClass || "";
- }
+ 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);
}
- if (!wrap) {
- wrap = elt("div", null, line.wrapClass, "position: relative");
- wrap.appendChild(lineElement);
+ }
+
+ // 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;
}
- // Kludge to make sure the styled element lies behind the selection (by z-index)
- if (bgClass)
- wrap.insertBefore(elt("div", null, bgClass + " CodeMirror-linebackground"), wrap.firstChild);
+ 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 gutterWrap = wrap.insertBefore(elt("div", null, "CodeMirror-gutter-wrapper", "position: absolute; left: " +
- (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"),
- lineElement);
- if (cm.options.fixedGutter) (wrap.alignable || (wrap.alignable = [])).push(gutterWrap);
+ var wrap = ensureLineWrapped(lineView);
+ var gutterWrap = lineView.gutter =
+ wrap.insertBefore(elt("div", null, "CodeMirror-gutter-wrapper", "position: absolute; left: " +
+ (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"),
+ lineView.text);
if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
- wrap.lineNumber = gutterWrap.appendChild(
- elt("div", lineNumberFor(cm.options, lineNo),
+ lineView.lineNumber = gutterWrap.appendChild(
+ elt("div", lineNumberFor(cm.options, lineN),
"CodeMirror-linenumber CodeMirror-gutter-elt",
"left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
- + display.lineNumInnerWidth + "px"));
- if (markers)
- for (var k = 0; k < cm.options.gutters.length; ++k) {
- var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
- if (found)
- gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
- dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
- }
+ + 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);
}
- if (ie_lt8) wrap.style.zIndex = 2;
- if (line.widgets && wrap != reuse) for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
+ insertLineWidgets(lineView, dims);
+ }
+
+ // Build a line's DOM representation from scratch
+ function buildLineElement(cm, lineView, lineN, dims) {
+ var built = getLineContent(cm, lineView);
+ lineView.text = lineView.node = built.pre;
+ if (built.bgClass) lineView.bgClass = built.bgClass;
+ if (built.textClass) lineView.textClass = built.textClass;
+
+ updateLineClasses(lineView);
+ updateLineGutter(cm, lineView, lineN, dims);
+ insertLineWidgets(lineView, dims);
+ return lineView.node;
+ }
+
+ // A lineView may contain multiple logical lines (when merged by
+ // collapsed spans). The widgets for all of them need to be drawn.
+ function insertLineWidgets(lineView, dims) {
+ insertLineWidgetsFor(lineView.line, lineView, dims, true);
+ if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
+ insertLineWidgetsFor(lineView.rest[i], lineView, dims, false);
+ }
+
+ function insertLineWidgetsFor(line, lineView, dims, allowAbove) {
+ if (!line.widgets) return;
+ var wrap = ensureLineWrapped(lineView);
+ for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
if (!widget.handleMouseEvents) node.ignoreEvents = true;
- positionLineWidget(widget, node, wrap, dims);
- if (widget.above)
- wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement);
+ positionLineWidget(widget, node, lineView, dims);
+ if (allowAbove && widget.above)
+ wrap.insertBefore(node, lineView.gutter || lineView.text);
else
wrap.appendChild(node);
signalLater(widget, "redraw");
}
- return wrap;
}
- function positionLineWidget(widget, node, wrap, dims) {
+ function positionLineWidget(widget, node, lineView, dims) {
if (widget.noHScroll) {
- (wrap.alignable || (wrap.alignable = [])).push(node);
+ (lineView.alignable || (lineView.alignable = [])).push(node);
var width = dims.wrapperWidth;
node.style.left = dims.fixedPos + "px";
if (!widget.coverGutter) {
}
}
+ // POSITION OBJECT
+
+ // A Pos instance represents a position within the text.
+ var Pos = CodeMirror.Pos = function(line, ch) {
+ if (!(this instanceof Pos)) return new Pos(line, ch);
+ this.line = line; this.ch = ch;
+ };
+
+ // Compare two positions, return 0 if they are the same, a negative
+ // number when a is less, and a positive number otherwise.
+ var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line || a.ch - b.ch; };
+
+ function copyPos(x) {return Pos(x.line, x.ch);}
+ function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; }
+ function minPos(a, b) { return cmp(a, b) < 0 ? a : b; }
+
// SELECTION / CURSOR
+ // Selection objects are immutable. A new one is created every time
+ // the selection changes. A selection is one or more non-overlapping
+ // (and non-touching) ranges, sorted, and an integer that indicates
+ // which one is the primary selection (the one that's scrolled into
+ // view, that getCursor returns, etc).
+ function Selection(ranges, primIndex) {
+ this.ranges = ranges;
+ this.primIndex = primIndex;
+ }
+
+ Selection.prototype = {
+ primary: function() { return this.ranges[this.primIndex]; },
+ equals: function(other) {
+ if (other == this) return true;
+ if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) return false;
+ for (var i = 0; i < this.ranges.length; i++) {
+ var here = this.ranges[i], there = other.ranges[i];
+ if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) return false;
+ }
+ return true;
+ },
+ deepCopy: function() {
+ for (var out = [], i = 0; i < this.ranges.length; i++)
+ out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head));
+ return new Selection(out, this.primIndex);
+ },
+ somethingSelected: function() {
+ for (var i = 0; i < this.ranges.length; i++)
+ if (!this.ranges[i].empty()) return true;
+ return false;
+ },
+ contains: function(pos, end) {
+ if (!end) end = pos;
+ for (var i = 0; i < this.ranges.length; i++) {
+ var range = this.ranges[i];
+ if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
+ return i;
+ }
+ return -1;
+ }
+ };
+
+ function Range(anchor, head) {
+ this.anchor = anchor; this.head = head;
+ }
+
+ Range.prototype = {
+ from: function() { return minPos(this.anchor, this.head); },
+ to: function() { return maxPos(this.anchor, this.head); },
+ empty: function() {
+ return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch;
+ }
+ };
+
+ // Take an unsorted, potentially overlapping set of ranges, and
+ // build a selection out of it. 'Consumes' ranges array (modifying
+ // it).
+ function normalizeSelection(ranges, primIndex) {
+ var prim = ranges[primIndex];
+ ranges.sort(function(a, b) { return cmp(a.from(), b.from()); });
+ primIndex = indexOf(ranges, prim);
+ for (var i = 1; i < ranges.length; i++) {
+ var cur = ranges[i], prev = ranges[i - 1];
+ if (cmp(prev.to(), cur.from()) >= 0) {
+ var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
+ var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
+ if (i <= primIndex) --primIndex;
+ ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
+ }
+ }
+ return new Selection(ranges, primIndex);
+ }
+
+ function simpleSelection(anchor, head) {
+ return new Selection([new Range(anchor, head || anchor)], 0);
+ }
+
+ // Most of the external API clips given positions to make sure they
+ // actually exist within the document.
+ function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
+ function clipPos(doc, pos) {
+ if (pos.line < doc.first) return Pos(doc.first, 0);
+ var last = doc.first + doc.size - 1;
+ if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
+ return clipToLen(pos, getLine(doc, pos.line).text.length);
+ }
+ function clipToLen(pos, linelen) {
+ var ch = pos.ch;
+ if (ch == null || ch > linelen) return Pos(pos.line, linelen);
+ else if (ch < 0) return Pos(pos.line, 0);
+ else return pos;
+ }
+ function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}
+ function clipPosArray(doc, array) {
+ for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]);
+ return out;
+ }
+
+ // SELECTION UPDATES
+
+ // The 'scroll' parameter given to many of these indicated whether
+ // the new cursor position should be scrolled into view after
+ // modifying the selection.
+
+ // If shift is held or the extend flag is set, extends a range to
+ // include a given position (and optionally a second position).
+ // Otherwise, simply returns the range between the given positions.
+ // Used for cursor motion and such.
+ function extendRange(doc, range, head, other) {
+ if (doc.cm && doc.cm.display.shift || doc.extend) {
+ var anchor = range.anchor;
+ if (other) {
+ var posBefore = cmp(head, anchor) < 0;
+ if (posBefore != (cmp(other, anchor) < 0)) {
+ anchor = head;
+ head = other;
+ } else if (posBefore != (cmp(head, other) < 0)) {
+ head = other;
+ }
+ }
+ return new Range(anchor, head);
+ } else {
+ return new Range(other || head, head);
+ }
+ }
+
+ // Extend the primary selection range, discard the rest.
+ function extendSelection(doc, head, other, options) {
+ setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options);
+ }
+
+ // Extend all selections (pos is an array of selections with length
+ // equal the number of selections)
+ function extendSelections(doc, heads, options) {
+ for (var out = [], i = 0; i < doc.sel.ranges.length; i++)
+ out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null);
+ var newSel = normalizeSelection(out, doc.sel.primIndex);
+ setSelection(doc, newSel, options);
+ }
+
+ // Updates a single range in the selection.
+ function replaceOneSelection(doc, i, range, options) {
+ var ranges = doc.sel.ranges.slice(0);
+ ranges[i] = range;
+ setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options);
+ }
+
+ // Reset the selection to a single range.
+ function setSimpleSelection(doc, anchor, head, options) {
+ setSelection(doc, simpleSelection(anchor, head), options);
+ }
+
+ // Give beforeSelectionChange handlers a change to influence a
+ // selection update.
+ function filterSelectionChange(doc, sel) {
+ var obj = {
+ ranges: sel.ranges,
+ update: function(ranges) {
+ this.ranges = [];
+ for (var i = 0; i < ranges.length; i++)
+ this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
+ clipPos(doc, ranges[i].head));
+ }
+ };
+ signal(doc, "beforeSelectionChange", doc, obj);
+ if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
+ if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1);
+ else return sel;
+ }
+
+ function setSelectionReplaceHistory(doc, sel, options) {
+ var done = doc.history.done, last = lst(done);
+ if (last && last.ranges) {
+ done[done.length - 1] = sel;
+ setSelectionNoUndo(doc, sel, options);
+ } else {
+ setSelection(doc, sel, options);
+ }
+ }
+
+ // Set a new selection.
+ function setSelection(doc, sel, options) {
+ setSelectionNoUndo(doc, sel, options);
+ addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
+ }
+
+ function setSelectionNoUndo(doc, sel, options) {
+ if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
+ sel = filterSelectionChange(doc, sel);
+
+ var bias = cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1;
+ setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));
+
+ if (!(options && options.scroll === false) && doc.cm)
+ ensureCursorVisible(doc.cm);
+ }
+
+ function setSelectionInner(doc, sel) {
+ if (sel.equals(doc.sel)) return;
+
+ doc.sel = sel;
+
+ if (doc.cm) {
+ doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = 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 updateSelection(cm) {
- var display = cm.display;
- var collapsed = posEq(cm.doc.sel.from, cm.doc.sel.to);
- if (collapsed || cm.options.showCursorWhenSelecting)
- updateSelectionCursor(cm);
- else
- display.cursor.style.display = display.otherCursor.style.display = "none";
- if (!collapsed)
- updateSelectionRange(cm);
- else
- display.selectionDiv.style.display = "none";
+ var display = cm.display, doc = cm.doc;
+ var curFragment = document.createDocumentFragment();
+ var selFragment = document.createDocumentFragment();
+
+ for (var i = 0; i < doc.sel.ranges.length; i++) {
+ var range = doc.sel.ranges[i];
+ var collapsed = range.empty();
+ if (collapsed || cm.options.showCursorWhenSelecting)
+ 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, cm.doc.sel.head, "div");
- var wrapOff = getRect(display.wrapper), lineOff = getRect(display.lineDiv);
- display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
- headPos.top + lineOff.top - wrapOff.top)) + "px";
- display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
- headPos.left + lineOff.left - wrapOff.left)) + "px";
+ var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
+ var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
+ var top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
+ headPos.top + lineOff.top - wrapOff.top));
+ var left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
+ headPos.left + lineOff.left - wrapOff.left));
+ display.inputDiv.style.top = top + "px";
+ display.inputDiv.style.left = left + "px";
}
+
+ removeChildrenAndAdd(display.cursorDiv, curFragment);
+ removeChildrenAndAdd(display.selectionDiv, selFragment);
}
- // No selection, plain cursor
- function updateSelectionCursor(cm) {
- var display = cm.display, pos = cursorCoords(cm, cm.doc.sel.head, "div");
- display.cursor.style.left = pos.left + "px";
- display.cursor.style.top = pos.top + "px";
- display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
- display.cursor.style.display = "";
+ // Draws a cursor for the given range
+ function drawSelectionCursor(cm, range, output) {
+ var pos = cursorCoords(cm, range.head, "div");
+
+ var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
+ cursor.style.left = pos.left + "px";
+ cursor.style.top = pos.top + "px";
+ cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
if (pos.other) {
- display.otherCursor.style.display = "";
- display.otherCursor.style.left = pos.other.left + "px";
- display.otherCursor.style.top = pos.other.top + "px";
- display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
- } else { display.otherCursor.style.display = "none"; }
+ // 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";
+ }
}
- // Highlight selection
- function updateSelectionRange(cm) {
- var display = cm.display, doc = cm.doc, sel = cm.doc.sel;
+ // 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 clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display);
+ var padding = paddingH(cm.display), leftSide = padding.left, rightSide = display.lineSpace.offsetWidth - padding.right;
function add(left, top, width, bottom) {
if (top < 0) top = 0;
+ 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 ? clientWidth - left : width) +
+ "px; top: " + top + "px; width: " + (width == null ? rightSide - left : width) +
"px; height: " + (bottom - top) + "px"));
}
left = leftPos.left;
right = rightPos.right;
}
- if (fromArg == null && from == 0) left = pl;
+ 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 = pl;
+ left = leftSide;
if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
}
- if (toArg == null && to == lineLen) right = clientWidth;
+ 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 < pl + 1) left = pl;
+ if (left < leftSide + 1) left = leftSide;
add(left, rightPos.top, right - left, rightPos.bottom);
});
return {start: start, end: end};
}
- if (sel.from.line == sel.to.line) {
- drawForLine(sel.from.line, sel.from.ch, sel.to.ch);
+ var sFrom = range.from(), sTo = range.to();
+ if (sFrom.line == sTo.line) {
+ drawForLine(sFrom.line, sFrom.ch, sTo.ch);
} else {
- var fromLine = getLine(doc, sel.from.line), toLine = getLine(doc, sel.to.line);
- var singleVLine = visualLine(doc, fromLine) == visualLine(doc, toLine);
- var leftEnd = drawForLine(sel.from.line, sel.from.ch, singleVLine ? fromLine.text.length : null).end;
- var rightStart = drawForLine(sel.to.line, singleVLine ? 0 : null, sel.to.ch).start;
+ 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(pl, rightStart.top, rightStart.left, rightStart.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(pl, leftEnd.bottom, null, rightStart.top);
+ add(leftSide, leftEnd.bottom, null, rightStart.top);
}
- removeChildrenAndAdd(display.selectionDiv, fragment);
- display.selectionDiv.style.display = "";
+ output.appendChild(fragment);
}
// Cursor-blinking
var display = cm.display;
clearInterval(display.blinker);
var on = true;
- display.cursor.style.visibility = display.otherCursor.style.visibility = "";
+ display.cursorDiv.style.visibility = "";
if (cm.options.cursorBlinkRate > 0)
display.blinker = setInterval(function() {
- display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden";
+ display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden";
}, cm.options.cursorBlinkRate);
}
// HIGHLIGHT WORKER
function startWorker(cm, time) {
- if (cm.doc.mode.startState && cm.doc.frontier < cm.display.showingTo)
+ 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.showingTo) return;
+ if (doc.frontier >= cm.display.viewTo) return;
var end = +new Date + cm.options.workTime;
var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
- var changed = [], prevChange;
- doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.showingTo + 500), function(line) {
- if (doc.frontier >= cm.display.showingFrom) { // Visible
+
+ runInOp(cm, function() {
+ doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) {
+ if (doc.frontier >= cm.display.viewFrom) { // Visible
var oldStyles = line.styles;
- line.styles = highlightLine(cm, line, state, true);
+ var highlighted = highlightLine(cm, line, state, true);
+ line.styles = highlighted.styles;
+ if (highlighted.classes) line.styleClasses = highlighted.classes;
+ else if (line.styleClasses) line.styleClasses = null;
var ischange = !oldStyles || oldStyles.length != line.styles.length;
for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
- if (ischange) {
- if (prevChange && prevChange.end == doc.frontier) prevChange.end++;
- else changed.push(prevChange = {start: doc.frontier, end: doc.frontier + 1});
- }
+ if (ischange) regLineChange(cm, doc.frontier, "text");
line.stateAfter = copyState(doc.mode, state);
} else {
processLine(cm, line.text, state);
return true;
}
});
- if (changed.length)
- operation(cm, function() {
- for (var i = 0; i < changed.length; ++i)
- regChange(this, changed[i].start, changed[i].end);
- })();
+ });
}
// Finds the line to start with when starting a parse. Tries to
else state = copyState(doc.mode, state);
doc.iter(pos, n, function(line) {
processLine(cm, line.text, state);
- var save = pos == n - 1 || pos % 5 == 0 || pos >= display.showingFrom && pos < display.showingTo;
+ var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo;
line.stateAfter = save ? copyState(doc.mode, state) : null;
++pos;
});
function paddingTop(display) {return display.lineSpace.offsetTop;}
function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
- function paddingLeft(display) {
- var e = removeChildrenAndAdd(display.measure, elt("pre", null, null, "text-align: left")).appendChild(elt("span", "x"));
- return e.offsetLeft;
- }
-
- function measureChar(cm, line, ch, data, bias) {
- var dir = -1;
- data = data || measureLine(cm, line);
- if (data.crude) {
- var left = data.left + ch * data.width;
- return {left: left, right: left + data.width, top: data.top, bottom: data.bottom};
- }
-
- for (var pos = ch;; pos += dir) {
- var r = data[pos];
- if (r) break;
- if (dir < 0 && pos == 0) dir = 1;
- }
- bias = pos > ch ? "left" : pos < ch ? "right" : bias;
- if (bias == "left" && r.leftSide) r = r.leftSide;
- else if (bias == "right" && r.rightSide) r = r.rightSide;
- return {left: pos < ch ? r.right : r.left,
- right: pos > ch ? r.left : r.right,
- top: r.top,
- bottom: r.bottom};
- }
-
- function findCachedMeasurement(cm, line) {
- var cache = cm.display.measureLineCache;
- for (var i = 0; i < cache.length; ++i) {
- var memo = cache[i];
- if (memo.text == line.text && memo.markedSpans == line.markedSpans &&
- cm.display.scroller.clientWidth == memo.width &&
- memo.classes == line.textClass + "|" + line.wrapClass)
- return memo;
- }
- }
-
- function clearCachedMeasurement(cm, line) {
- var exists = findCachedMeasurement(cm, line);
- if (exists) exists.text = exists.measure = exists.markedSpans = null;
- }
-
- function measureLine(cm, line) {
- // First look in the cache
- var cached = findCachedMeasurement(cm, line);
- if (cached) return cached.measure;
-
- // Failing that, recompute and store result in cache
- var measure = measureLineInner(cm, line);
- var cache = cm.display.measureLineCache;
- var memo = {text: line.text, width: cm.display.scroller.clientWidth,
- markedSpans: line.markedSpans, measure: measure,
- classes: line.textClass + "|" + line.wrapClass};
- if (cache.length == 16) cache[++cm.display.measureLineCachePos % 16] = memo;
- else cache.push(memo);
- return measure;
- }
-
- function measureLineInner(cm, line) {
- if (!cm.options.lineWrapping && line.text.length >= cm.options.crudeMeasuringFrom)
- return crudelyMeasureLine(cm, line);
-
- var display = cm.display, measure = emptyArray(line.text.length);
- var pre = buildLineContent(cm, line, measure, true).pre;
-
- // IE does not cache element positions of inline elements between
- // calls to getBoundingClientRect. This makes the loop below,
- // which gathers the positions of all the characters on the line,
- // do an amount of layout work quadratic to the number of
- // characters. When line wrapping is off, we try to improve things
- // by first subdividing the line into a bunch of inline blocks, so
- // that IE can reuse most of the layout information from caches
- // for those blocks. This does interfere with line wrapping, so it
- // doesn't work when wrapping is on, but in that case the
- // situation is slightly better, since IE does cache line-wrapping
- // information and only recomputes per-line.
- if (old_ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) {
- var fragment = document.createDocumentFragment();
- var chunk = 10, n = pre.childNodes.length;
- for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) {
- var wrap = elt("div", null, null, "display: inline-block");
- for (var j = 0; j < chunk && n; ++j) {
- wrap.appendChild(pre.firstChild);
- --n;
+ 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;
+ }
+
+ // Ensure the lineView.wrapping.heights array is populated. This is
+ // an array of bottom offsets for the lines that make up a drawn
+ // line. When lineWrapping is on, there might be more than one
+ // height.
+ function ensureLineHeights(cm, lineView, rect) {
+ var wrapping = cm.options.lineWrapping;
+ var curWidth = wrapping && cm.display.scroller.clientWidth;
+ if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
+ var heights = lineView.measure.heights = [];
+ if (wrapping) {
+ lineView.measure.width = curWidth;
+ var rects = lineView.text.firstChild.getClientRects();
+ for (var i = 0; i < rects.length - 1; i++) {
+ var cur = rects[i], next = rects[i + 1];
+ if (Math.abs(cur.bottom - next.bottom) > 2)
+ heights.push((cur.bottom + next.top) / 2 - rect.top);
}
- fragment.appendChild(wrap);
}
- pre.appendChild(fragment);
- }
-
- removeChildrenAndAdd(display.measure, pre);
-
- var outer = getRect(display.lineDiv);
- var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight;
- // Work around an IE7/8 bug where it will sometimes have randomly
- // replaced our pre with a clone at this point.
- if (ie_lt9 && display.measure.first != pre)
- removeChildrenAndAdd(display.measure, pre);
+ 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
+ };
+ }
- function measureRect(rect) {
- var top = rect.top - outer.top, bot = rect.bottom - outer.top;
- if (bot > maxBot) bot = maxBot;
- if (top < 0) top = 0;
- for (var i = vranges.length - 2; i >= 0; i -= 2) {
- var rtop = vranges[i], rbot = vranges[i+1];
- if (rtop > bot || rbot < top) continue;
- if (rtop <= top && rbot >= bot ||
- top <= rtop && bot >= rbot ||
- Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) {
- vranges[i] = Math.min(top, rtop);
- vranges[i+1] = Math.max(bot, rbot);
- break;
- }
+ // Given a prepared measurement object, measures the position of an
+ // actual character (or fetches it from the cache).
+ function measureCharPrepared(cm, prepared, ch, bias) {
+ if (prepared.before) ch = -1;
+ var key = ch + (bias || ""), found;
+ if (prepared.cache.hasOwnProperty(key)) {
+ found = prepared.cache[key];
+ } else {
+ if (!prepared.rect)
+ prepared.rect = prepared.view.text.getBoundingClientRect();
+ if (!prepared.hasHeights) {
+ ensureLineHeights(cm, prepared.view, prepared.rect);
+ prepared.hasHeights = true;
}
- if (i < 0) { i = vranges.length; vranges.push(top, bot); }
- return {left: rect.left - outer.left,
- right: rect.right - outer.left,
- top: i, bottom: null};
- }
- function finishRect(rect) {
- rect.bottom = vranges[rect.top+1];
- rect.top = vranges[rect.top];
- }
-
- for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) {
- var node = cur, rect = null;
- // A widget might wrap, needs special care
- if (/\bCodeMirror-widget\b/.test(cur.className) && cur.getClientRects) {
- if (cur.firstChild.nodeType == 1) node = cur.firstChild;
- var rects = node.getClientRects();
- if (rects.length > 1) {
- rect = data[i] = measureRect(rects[0]);
- rect.rightSide = measureRect(rects[rects.length - 1]);
- }
+ found = measureCharInner(cm, prepared, ch, bias);
+ if (!found.bogus) prepared.cache[key] = found;
+ }
+ return {left: found.left, right: found.right, top: found.top, bottom: found.bottom};
+ }
+
+ var nullRect = {left: 0, right: 0, top: 0, bottom: 0};
+
+ function measureCharInner(cm, prepared, ch, bias) {
+ var map = prepared.map;
+
+ var node, start, end, collapse;
+ // First, search the line map for the text node corresponding to,
+ // or closest to, the target character.
+ for (var i = 0; i < map.length; i += 3) {
+ var mStart = map[i], mEnd = map[i + 1];
+ if (ch < mStart) {
+ start = 0; end = 1;
+ collapse = "left";
+ } else if (ch < mEnd) {
+ start = ch - mStart;
+ end = start + 1;
+ } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
+ end = mEnd - mStart;
+ start = end - 1;
+ if (ch >= mEnd) collapse = "right";
+ }
+ if (start != null) {
+ node = map[i + 2];
+ if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
+ collapse = bias;
+ if (bias == "left" && start == 0)
+ while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
+ node = map[(i -= 3) + 2];
+ collapse = "left";
+ }
+ if (bias == "right" && start == mEnd - mStart)
+ while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
+ node = map[(i += 3) + 2];
+ collapse = "right";
+ }
+ break;
}
- if (!rect) rect = data[i] = measureRect(getRect(node));
- if (cur.measureRight) rect.right = getRect(cur.measureRight).left - outer.left;
- if (cur.leftSide) rect.leftSide = measureRect(getRect(cur.leftSide));
- }
- removeChildren(cm.display.measure);
- for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) {
- finishRect(cur);
- if (cur.leftSide) finishRect(cur.leftSide);
- if (cur.rightSide) finishRect(cur.rightSide);
}
- return data;
- }
- function crudelyMeasureLine(cm, line) {
- var copy = new Line(line.text.slice(0, 100), null);
- if (line.textClass) copy.textClass = line.textClass;
- var measure = measureLineInner(cm, copy);
- var left = measureChar(cm, copy, 0, measure, "left");
- var right = measureChar(cm, copy, 99, measure, "right");
- return {crude: true, top: left.top, left: left.left, bottom: left.bottom, width: (right.right - left.left) / 100};
+ var rect;
+ if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
+ while (start && isExtendingChar(prepared.line.text.charAt(mStart + start))) --start;
+ while (mStart + end < mEnd && isExtendingChar(prepared.line.text.charAt(mStart + end))) ++end;
+ if (ie_upto8 && start == 0 && end == mEnd - mStart) {
+ rect = node.parentNode.getBoundingClientRect();
+ } else if (ie && cm.options.lineWrapping) {
+ var rects = range(node, start, end).getClientRects();
+ if (rects.length)
+ rect = rects[bias == "right" ? rects.length - 1 : 0];
+ else
+ rect = nullRect;
+ } else {
+ rect = range(node, start, end).getBoundingClientRect();
+ }
+ } else { // If it is a widget, simply get the box for the whole widget.
+ if (start > 0) collapse = bias = "right";
+ var rects;
+ if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
+ rect = rects[bias == "right" ? rects.length - 1 : 0];
+ else
+ rect = node.getBoundingClientRect();
+ }
+ if (ie_upto8 && !start && (!rect || !rect.left && !rect.right)) {
+ var rSpan = node.parentNode.getClientRects()[0];
+ if (rSpan)
+ rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom};
+ else
+ rect = nullRect;
+ }
+
+ var top, bot = (rect.bottom + rect.top) / 2 - prepared.rect.top;
+ var heights = prepared.view.measure.heights;
+ for (var i = 0; i < heights.length - 1; i++)
+ if (bot < heights[i]) break;
+ top = i ? heights[i - 1] : 0; bot = heights[i];
+ var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
+ right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
+ top: top, bottom: bot};
+ if (!rect.left && !rect.right) result.bogus = true;
+ return result;
}
- function measureLineWidth(cm, line) {
- var hasBadSpan = false;
- if (line.markedSpans) for (var i = 0; i < line.markedSpans; ++i) {
- var sp = line.markedSpans[i];
- if (sp.collapsed && (sp.to == null || sp.to == line.text.length)) hasBadSpan = true;
+ 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] = {};
}
- var cached = !hasBadSpan && findCachedMeasurement(cm, line);
- if (cached || line.text.length >= cm.options.crudeMeasuringFrom)
- return measureChar(cm, line, line.text.length, cached && cached.measure, "right").right;
+ }
- var pre = buildLineContent(cm, line, null, true).pre;
- var end = pre.appendChild(zeroWidthElement(cm.display.measure));
- removeChildrenAndAdd(cm.display.measure, pre);
- return getRect(end).right - getRect(cm.display.lineDiv).left;
+ function 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) {
- cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0;
- cm.display.cachedCharWidth = cm.display.cachedTextHeight = null;
+ 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; }
- // Context is one of "line", "div" (display.lineDiv), "local"/null (editor), or "page"
+ // Converts a {top, bottom, left, right} box from line-local
+ // coordinates into another coordinate system. Context may be one of
+ // "line", "div" (display.lineDiv), "local"/null (editor), or "page".
function intoCoordSystem(cm, lineObj, rect, context) {
if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
var size = widgetHeight(lineObj.widgets[i]);
}
if (context == "line") return rect;
if (!context) context = "local";
- var yOff = heightAtLine(cm, lineObj);
+ var yOff = heightAtLine(lineObj);
if (context == "local") yOff += paddingTop(cm.display);
else yOff -= cm.display.viewOffset;
if (context == "page" || context == "window") {
- var lOff = getRect(cm.display.lineSpace);
+ 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;
return rect;
}
- // Context may be "window", "page", "div", or "local"/null
- // Result is in "div" coords
+ // 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;
left -= pageScrollX();
top -= pageScrollY();
} else if (context == "local" || !context) {
- var localBox = getRect(cm.display.sizer);
+ var localBox = cm.display.sizer.getBoundingClientRect();
left += localBox.left;
top += localBox.top;
}
- var lineSpaceBox = getRect(cm.display.lineSpace);
+ 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, null, bias), context);
+ return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context);
}
- function cursorCoords(cm, pos, context, lineObj, measurement) {
+ // Returns a box for a given cursor position, which may have an
+ // 'other' property containing the position of the secondary cursor
+ // on a bidi boundary.
+ function cursorCoords(cm, pos, context, lineObj, preparedMeasure) {
lineObj = lineObj || getLine(cm.doc, pos.line);
- if (!measurement) measurement = measureLine(cm, lineObj);
+ if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj);
function get(ch, right) {
- var m = measureChar(cm, lineObj, ch, measurement, right ? "right" : "left");
+ var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left");
if (right) m.left = m.right; else m.right = m.left;
return intoCoordSystem(cm, lineObj, m, context);
}
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 = new Pos(line, ch);
+ var pos = Pos(line, ch);
pos.xRel = xRel;
if (outside) pos.outside = true;
return pos;
}
- // Coords must be lineSpace-local
+ // 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 lineNo = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
- if (lineNo > last)
+ 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 lineObj = getLine(doc, lineNo);
- var found = coordsCharInner(cm, lineObj, lineNo, x, y);
+ var found = coordsCharInner(cm, lineObj, lineN, x, y);
var merged = collapsedSpanAtEnd(lineObj);
- var mergedPos = merged && merged.find();
+ var mergedPos = merged && merged.find(0, true);
if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
- lineNo = mergedPos.to.line;
+ lineN = lineNo(lineObj = mergedPos.to.line);
else
return found;
}
}
function coordsCharInner(cm, lineObj, lineNo, x, y) {
- var innerOff = y - heightAtLine(cm, lineObj);
+ var innerOff = y - heightAtLine(lineObj);
var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
- var measurement = measureLine(cm, lineObj);
+ var preparedMeasure = prepareMeasureForLine(cm, lineObj);
function getX(ch) {
- var sp = cursorCoords(cm, Pos(lineNo, ch), "line",
- lineObj, measurement);
+ 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;
var xDiff = x - (ch == from ? fromX : toX);
while (isExtendingChar(lineObj.text.charAt(ch))) ++ch;
var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
- xDiff < 0 ? -1 : xDiff ? 1 : 0);
+ xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0);
return pos;
}
var step = Math.ceil(dist / 2), middle = from + step;
}
var measureText;
+ // Compute the default text height.
function textHeight(display) {
if (display.cachedTextHeight != null) return display.cachedTextHeight;
if (measureText == null) {
return height || 1;
}
+ // Compute the default character width.
function charWidth(display) {
if (display.cachedCharWidth != null) return display.cachedCharWidth;
- var anchor = elt("span", "x");
+ var anchor = elt("span", "xxxxxxxxxx");
var pre = elt("pre", [anchor]);
removeChildrenAndAdd(display.measure, pre);
- var width = anchor.offsetWidth;
+ 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 changes in such a way that each
- // change won't have to update the cursor and display (which would
- // be awkward, slow, and error-prone), but instead updates are
- // batched and then all combined and executed at once.
+ // 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 nextOpId = 0;
+ // Start a new operation.
function startOperation(cm) {
cm.curOp = {
- // An array of ranges of lines that have to be updated. See
- // updateDisplay.
- changes: [],
- forceUpdate: false,
- updateInput: null,
- userSelChange: null,
- textChanged: null,
- selectionChanged: false,
- cursorActivity: false,
- updateMaxLine: false,
- updateScrollPos: false,
- id: ++nextOpId
+ 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
+ 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 (!delayedCallbackDepth++) delayedCallbacks = [];
}
+ // Finish an operation, updating the display and signalling delayed events
function endOperation(cm) {
var op = cm.curOp, doc = cm.doc, display = cm.display;
cm.curOp = null;
- if (op.updateMaxLine) computeMaxLength(cm);
- if (display.maxLineChanged && !cm.options.lineWrapping && display.maxLine) {
- var width = measureLineWidth(cm, display.maxLine);
- display.sizer.style.minWidth = Math.max(0, width + 3 + scrollerCutOff) + "px";
- display.maxLineChanged = false;
- var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + display.sizer.offsetWidth - display.scroller.clientWidth);
- if (maxScrollLeft < doc.scrollLeft && !op.updateScrollPos)
- setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true);
- }
- var newScrollPos, updated;
- if (op.updateScrollPos) {
- newScrollPos = op.updateScrollPos;
- } else if (op.selectionChanged && display.scroller.clientHeight) { // don't rescroll if not visible
- var coords = cursorCoords(cm, doc.sel.head);
- newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom);
- }
- if (op.changes.length || op.forceUpdate || newScrollPos && newScrollPos.scrollTop != null) {
- updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop, op.forceUpdate);
+ if (op.updateMaxLine) findMaxLine(cm);
+
+ // If it looks like an update might be needed, call updateDisplay
+ if (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) {
+ var updated = updateDisplay(cm, {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);
if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop;
}
+ // If no update was run, but the selection changed, redraw that.
if (!updated && op.selectionChanged) updateSelection(cm);
- if (op.updateScrollPos) {
- var top = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, newScrollPos.scrollTop));
- var left = Math.max(0, Math.min(display.scroller.scrollWidth - display.scroller.clientWidth, newScrollPos.scrollLeft));
+ if (!updated && op.startHeight != cm.doc.height) updateScrollbars(cm);
+
+ // Propagate the scroll position to the actual DOM scroller
+ if (op.scrollTop != null && display.scroller.scrollTop != op.scrollTop) {
+ var top = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop));
display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = top;
+ }
+ if (op.scrollLeft != null && display.scroller.scrollLeft != op.scrollLeft) {
+ var left = Math.max(0, Math.min(display.scroller.scrollWidth - display.scroller.clientWidth, op.scrollLeft));
display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = left;
alignHorizontally(cm);
- if (op.scrollToPos)
- scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos.from),
- clipPos(cm.doc, op.scrollToPos.to), op.scrollToPos.margin);
- } else if (newScrollPos) {
- scrollCursorIntoView(cm);
}
+ // If we need to scroll a specific position into view, do so.
+ if (op.scrollToPos) {
+ var coords = scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos.from),
+ clipPos(cm.doc, op.scrollToPos.to), op.scrollToPos.margin);
+ if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords);
+ }
+
if (op.selectionChanged) restartBlink(cm);
if (cm.state.focused && op.updateInput)
- resetInput(cm, op.userSelChange);
+ resetInput(cm, op.typing);
+ // 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");
delayed = delayedCallbacks;
delayedCallbacks = null;
}
- if (op.textChanged)
- signal(cm, "change", cm, op.textChanged);
- if (op.cursorActivity) signal(cm, "cursorActivity", cm);
+ // Fire change events, and delayed event handlers
+ if (op.changeObjs)
+ signal(cm, "changes", cm, op.changeObjs);
if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i]();
+ if (op.cursorActivityHandlers)
+ for (var i = 0; i < op.cursorActivityHandlers.length; i++)
+ op.cursorActivityHandlers[i](cm);
}
+ // 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(cm1, f) {
+ function operation(cm, f) {
return function() {
- var cm = cm1 || this, withOp = !cm.curOp;
- if (withOp) startOperation(cm);
- try { var result = f.apply(cm, arguments); }
- finally { if (withOp) endOperation(cm); }
- return result;
+ if (cm.curOp) return f.apply(cm, arguments);
+ startOperation(cm);
+ try { return f.apply(cm, arguments); }
+ finally { endOperation(cm); }
};
}
- function docOperation(f) {
+ // Used to add methods to editor and doc instances, wrapping them in
+ // operations.
+ function methodOp(f) {
return function() {
- var withOp = this.cm && !this.cm.curOp, result;
- if (withOp) startOperation(this.cm);
- try { result = f.apply(this, arguments); }
- finally { if (withOp) endOperation(this.cm); }
- return result;
+ if (this.curOp) return f.apply(this, arguments);
+ startOperation(this);
+ try { return f.apply(this, arguments); }
+ finally { endOperation(this); }
};
}
- function runInOp(cm, f) {
- var withOp = !cm.curOp, result;
- if (withOp) startOperation(cm);
- try { result = f(); }
- finally { if (withOp) endOperation(cm); }
- return result;
+ 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;
- cm.curOp.changes.push({from: from, to: to, diff: lendiff});
+ 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) 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() {
});
}
+ // 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;
cm.display.poll.set(20, p);
}
- // prevInput is a hack to work with IME. If we reset the textarea
- // on every change, that breaks IME. So we look for changes
- // compared to the previous content instead. (Modern browsers have
- // events that indicate IME taking place, but these are not widely
- // supported or compatible enough yet to rely on.)
+ // 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, sel = doc.sel;
- if (!cm.state.focused || hasSelection(input) || isReadOnly(cm) || cm.options.disableInput) return false;
+ 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)
+ 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 (text == prevInput && posEq(sel.from, sel.to)) return false;
- if (ie && !ie_lt9 && cm.display.inputHasSelection === text) {
- resetInput(cm, true);
+ // If nothing changed, bail.
+ if (text == prevInput && !cm.somethingSelected()) return false;
+ // Work around nonsensical selection resetting in IE9/10
+ if (ie && !ie_upto8 && cm.display.inputHasSelection === text) {
+ resetInput(cm);
return false;
}
var withOp = !cm.curOp;
if (withOp) startOperation(cm);
- sel.shift = false;
+ cm.display.shift = false;
+
+ // 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 from = sel.from, to = sel.to;
- var inserted = text.slice(same);
- if (same < prevInput.length)
- from = Pos(from.line, from.ch - (prevInput.length - same));
- else if (cm.state.overwrite && posEq(from, to) && !cm.state.pasteIncoming)
- to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + inserted.length));
-
- var updateInput = cm.curOp.updateInput;
- var changeEvent = {from: from, to: to, text: splitLines(inserted),
- origin: cm.state.pasteIncoming ? "paste" : cm.state.cutIncoming ? "cut" : "+input"};
- makeChange(cm.doc, changeEvent, "end");
- cm.curOp.updateInput = updateInput;
- signalLater(cm, "inputRead", cm, changeEvent);
- if (inserted && !cm.state.pasteIncoming && cm.options.electricChars &&
- cm.options.smartIndent && sel.head.ch < 100) {
- var electric = cm.getModeAt(sel.head).electricChars;
- if (electric) for (var i = 0; i < electric.length; i++)
- if (inserted.indexOf(electric.charAt(i)) > -1) {
- indentLine(cm, sel.head.line, "smart");
- break;
+ var inserted = text.slice(same), textLines = splitLines(inserted);
+
+ // When pasing N lines into N selections, insert one line per selection
+ var multiPaste = cm.state.pasteIncoming && textLines.length > 1 && doc.sel.ranges.length == textLines.length;
+
+ // 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 ? [textLines[i]] : 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);
+ if (mode.electricChars) {
+ for (var j = 0; j < mode.electricChars.length; j++)
+ if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
+ indentLine(cm, range.head.line, "smart");
+ break;
+ }
+ } else if (mode.electricInput) {
+ var end = changeEnd(changeEvent);
+ if (mode.electricInput.test(getLine(doc, end.line).text.slice(0, end.ch)))
+ indentLine(cm, range.head.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);
return true;
}
- function resetInput(cm, user) {
+ // Reset the input to correspond to the selection (or to be empty,
+ // when not typing and nothing is selected)
+ function resetInput(cm, typing) {
var minimal, selected, doc = cm.doc;
- if (!posEq(doc.sel.from, doc.sel.to)) {
+ if (cm.somethingSelected()) {
cm.display.prevInput = "";
+ var range = doc.sel.primary();
minimal = hasCopyEvent &&
- (doc.sel.to.line - doc.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000);
+ (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_lt9) cm.display.inputHasSelection = content;
- } else if (user) {
+ if (ie && !ie_upto8) cm.display.inputHasSelection = content;
+ } else if (!typing) {
cm.display.prevInput = cm.display.input.value = "";
- if (ie && !ie_lt9) cm.display.inputHasSelection = null;
+ if (ie && !ie_upto8) cm.display.inputHasSelection = null;
}
cm.display.inaccurateSelection = minimal;
}
function focusInput(cm) {
- if (cm.options.readOnly != "nocursor" && (!mobile || document.activeElement != cm.display.input))
+ if (cm.options.readOnly != "nocursor" && (!mobile || activeElt() != cm.display.input))
cm.display.input.focus();
}
+ 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));
- if (old_ie)
+ // Older IE's will not fire a second mousedown for a double click
+ if (ie_upto10)
on(d.scroller, "dblclick", operation(cm, function(e) {
if (signalDOMEvent(cm, e)) return;
var pos = posFromMouse(cm, e);
if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
e_preventDefault(e);
- var word = findWordAt(getLine(cm.doc, pos.line).text, pos);
- extendSelection(cm.doc, word.from, word.to);
+ var word = findWordAt(cm.doc, 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);
});
- // Gecko browsers fire contextmenu *after* opening the menu, at
+ // 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 Gecko.
- if (!captureMiddleClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});
+ // 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);
if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft);
});
+ // 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 clicks in the scrollbars from killing focus
function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); }
on(d.scrollbarH, "mousedown", reFocus);
on(d.scrollbarV, "mousedown", reFocus);
// Prevent wrapper from ever scrolling
on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
+ // When the window resizes, we need to refresh active editors.
var resizeTimer;
function onResize() {
if (resizeTimer == null) resizeTimer = setTimeout(function() {
resizeTimer = null;
// Might be a text scaling operation, clear size caches.
- d.cachedCharWidth = d.cachedTextHeight = knownScrollbarWidth = null;
- clearCaches(cm);
- runInOp(cm, bind(regChange, cm));
+ d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = knownScrollbarWidth = null;
+ cm.setSize();
}, 100);
}
on(window, "resize", onResize);
- // Above handler holds on to the editor and its data structures.
- // Here we poll to unregister it when the editor is no longer in
- // the document, so that it can be garbage-collected.
+ // The above handler holds on to the editor and its data
+ // structures. Here we poll to unregister it when the editor is no
+ // longer in the document, so that it can be garbage-collected.
function unregister() {
- for (var p = d.wrapper.parentNode; p && p != document.body; p = p.parentNode) {}
- if (p) setTimeout(unregister, 5000);
+ if (contains(document.body, d.wrapper)) setTimeout(unregister, 5000);
else off(window, "resize", onResize);
}
setTimeout(unregister, 5000);
on(d.input, "keyup", operation(cm, onKeyUp));
on(d.input, "input", function() {
- if (ie && !ie_lt9 && cm.display.inputHasSelection) cm.display.inputHasSelection = null;
+ if (ie && !ie_upto8 && cm.display.inputHasSelection) cm.display.inputHasSelection = null;
fastPoll(cm);
});
on(d.input, "keydown", operation(cm, onKeyDown));
on(d.input, "blur", bind(onBlur, cm));
function drag_(e) {
- if (signalDOMEvent(cm, e) || cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return;
- e_stop(e);
+ if (!signalDOMEvent(cm, e)) e_stop(e);
}
if (cm.options.dragDrop) {
on(d.scroller, "dragstart", function(e){onDragStart(cm, e);});
}
on(d.scroller, "paste", function(e) {
if (eventInWidget(d, e)) return;
+ cm.state.pasteIncoming = true;
focusInput(cm);
fastPoll(cm);
});
fastPoll(cm);
});
- function prepareCopy(e) {
- if (d.inaccurateSelection) {
- d.prevInput = "";
- d.inaccurateSelection = false;
- d.input.value = cm.getSelection();
- selectInput(d.input);
+ function prepareCopyCut(e) {
+ if (cm.somethingSelected()) {
+ if (d.inaccurateSelection) {
+ d.prevInput = "";
+ d.inaccurateSelection = false;
+ d.input.value = cm.getSelection();
+ 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 += cm.getRange(lineRange.anchor, lineRange.head);
+ }
+ if (e.type == "cut") {
+ cm.setSelections(ranges, null, sel_dontScroll);
+ } else {
+ d.prevInput = "";
+ d.input.value = text;
+ selectInput(d.input);
+ }
}
if (e.type == "cut") cm.state.cutIncoming = true;
}
- on(d.input, "cut", prepareCopy);
- on(d.input, "copy", prepareCopy);
+ 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 (document.activeElement == d.input) d.input.blur();
+ if (activeElt() == d.input) d.input.blur();
focusInput(cm);
});
}
+ // 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.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true;
}
}
- function posFromMouse(cm, e, liberal) {
+ // 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) {
var target = e_target(e);
- if (target == display.scrollbarH || target == display.scrollbarH.firstChild ||
- target == display.scrollbarV || target == display.scrollbarV.firstChild ||
+ if (target == display.scrollbarH || target == display.scrollbarV ||
target == display.scrollbarFiller || target == display.gutterFiller) return null;
}
- var x, y, space = getRect(display.lineSpace);
+ var x, y, space = display.lineSpace.getBoundingClientRect();
// Fails unpredictably on IE[67] when mouse is dragged around quickly.
- try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
- return coordsChar(cm, x - space.left, y - space.top);
+ 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;
}
- var lastClick, lastDoubleClick;
+ // 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, doc = cm.doc, sel = doc.sel;
- sel.shift = e.shiftKey;
+ 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);
}
}
if (clickInGutter(cm, e)) return;
var start = posFromMouse(cm, e);
+ window.focus();
switch (e_button(e)) {
- case 3:
- if (captureMiddleClick) onContextMenu.call(cm, cm, e);
- return;
+ 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);
- return;
- }
- // For button 1, if it was clicked inside the editor
- // (posFromMouse returning non-null), we have to adjust the
- // selection.
- if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;}
-
- if (!cm.state.focused) onFocus(cm);
-
- var now = +new Date, type = "single";
- if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
- type = "triple";
- e_preventDefault(e);
- setTimeout(bind(focusInput, cm), 20);
- selectLine(cm, start.line);
- } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
- type = "double";
- lastDoubleClick = {time: now, pos: start};
- e_preventDefault(e);
- var word = findWordAt(getLine(doc, start.line).text, start);
- extendSelection(cm.doc, word.from, word.to);
- } else { lastClick = {time: now, pos: start}; }
-
- var last = start;
- if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) &&
- !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") {
- var dragEnd = operation(cm, function(e2) {
- if (webkit) display.scroller.draggable = false;
- cm.state.draggingText = false;
- off(document, "mouseup", dragEnd);
- off(display.scroller, "drop", dragEnd);
- if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
- e_preventDefault(e2);
- extendSelection(cm.doc, start);
- focusInput(cm);
- // Work around unexplainable focus problem in IE9 (#2127)
- if (old_ie && !ie_lt9)
- 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);
- return;
+ break;
+ case 3:
+ if (captureRightClick) onContextMenu(cm, e);
+ break;
}
- e_preventDefault(e);
- if (type == "single") extendSelection(cm.doc, clipPos(doc, start));
+ }
- var startstart = sel.from, startend = sel.to, lastPos = start;
+ var lastClick, lastDoubleClick;
+ function leftButtonDown(cm, e, start) {
+ setTimeout(bind(ensureFocus, cm), 0);
- function doSelect(cur) {
- if (posEq(lastPos, cur)) return;
- lastPos = cur;
+ 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};
+ }
- if (type == "single") {
- extendSelection(cm.doc, clipPos(doc, start), cur);
- return;
+ var sel = cm.doc.sel, addNew = mac ? e.metaKey : e.ctrlKey;
+ if (cm.options.dragDrop && dragAndDrop && !addNew && !isReadOnly(cm) &&
+ type == "single" && sel.contains(start) > -1 && sel.somethingSelected())
+ leftButtonStartDrag(cm, e, start);
+ else
+ leftButtonSelect(cm, e, start, type, addNew);
+ }
+
+ // 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) {
+ 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);
+ extendSelection(cm.doc, start);
+ focusInput(cm);
+ // Work around unexplainable focus problem in IE9 (#2127)
+ if (ie_upto10 && !ie_upto8)
+ 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);
- startstart = clipPos(doc, startstart);
- startend = clipPos(doc, startend);
- if (type == "double") {
- var word = findWordAt(getLine(doc, cur.line).text, cur);
- if (posLess(cur, startstart)) extendSelection(cm.doc, word.from, startend);
- else extendSelection(cm.doc, startstart, word.to);
- } else if (type == "triple") {
- if (posLess(cur, startstart)) extendSelection(cm.doc, startend, clipPos(doc, Pos(cur.line, 0)));
- else extendSelection(cm.doc, startstart, clipPos(doc, Pos(cur.line + 1, 0)));
+ var ourRange, ourIndex, startSel = doc.sel;
+ if (addNew && !e.shiftKey) {
+ ourIndex = doc.sel.contains(start);
+ if (ourIndex > -1)
+ ourRange = doc.sel.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 = findWordAt(doc, 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) {
+ replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
+ } else {
+ ourIndex = doc.sel.ranges.length;
+ setSelection(doc, normalizeSelection(doc.sel.ranges.concat([ourRange]), ourIndex),
+ {scroll: false, origin: "*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), sel_mouse);
+ } else {
+ var oldRange = ourRange;
+ var anchor = oldRange.anchor, head = pos;
+ if (type != "single") {
+ if (type == "double")
+ var range = findWordAt(doc, 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 = getRect(display.wrapper);
+ 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,
function extend(e) {
var curCount = ++counter;
- var cur = posFromMouse(cm, e, true);
+ var cur = posFromMouse(cm, e, true, type == "rect");
if (!cur) return;
- if (!posEq(cur, last)) {
- if (!cm.state.focused) onFocus(cm);
- last = cur;
- doSelect(cur);
+ 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);
focusInput(cm);
off(document, "mousemove", move);
off(document, "mouseup", up);
+ doc.history.lastSelOrigin = null;
}
var move = operation(cm, function(e) {
- if (!old_ie && !e_button(e)) done(e);
+ if ((ie && !ie_upto9) ? !e.buttons : !e_button(e)) done(e);
else extend(e);
});
var up = operation(cm, done);
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(getRect(cm.display.gutters).right)) return false;
+ if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false;
if (prevent) e_preventDefault(e);
var display = cm.display;
- var lineBox = getRect(display.lineDiv);
+ 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 && getRect(g).right >= mX) {
+ 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);
}
}
- function contextMenuInGutter(cm, e) {
- if (!hasHandler(cm, "gutterContextMenu")) return false;
- return gutterEvent(cm, e, "gutterContextMenu", false, signal);
- }
-
function clickInGutter(cm, e) {
return gutterEvent(cm, e, "gutterClick", true, signalLater);
}
function onDrop(e) {
var cm = this;
- if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e) || (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))))
+ 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 = function() {
+ reader.onload = operation(cm, function() {
text[i] = reader.result;
if (++read == n) {
pos = clipPos(cm.doc, pos);
- makeChange(cm.doc, {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}, "around");
+ 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 {
+ } else { // Normal drop
// Don't do a replace if the drop happened inside of the selected text.
- if (cm.state.draggingText && !(posLess(pos, cm.doc.sel.from) || posLess(cm.doc.sel.to, pos))) {
+ 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);
try {
var text = e.dataTransfer.getData("Text");
if (text) {
- var curFrom = cm.doc.sel.from, curTo = cm.doc.sel.to;
- setSelection(cm.doc, pos, pos);
- if (cm.state.draggingText) replaceRange(cm.doc, "", curFrom, curTo, "paste");
- cm.replaceSelection(text, null, "paste");
+ var selected = cm.state.draggingText && 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);
}
}
if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; }
if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return;
- var txt = cm.getSelection();
- e.dataTransfer.setData("Text", txt);
+ 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 (opera) {
+ 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 (opera) img.parentNode.removeChild(img);
+ 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) updateDisplay(cm, [], val);
+ if (!gecko) updateDisplay(cm, {top: val});
if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val;
- if (gecko) updateDisplay(cm, []);
+ if (gecko) updateDisplay(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);
// 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 (old_ie) wheelPixelsPerUnit = -.53;
+ if (ie) wheelPixelsPerUnit = -.53;
else if (gecko) wheelPixelsPerUnit = 15;
else if (chrome) wheelPixelsPerUnit = -.7;
else if (safari) wheelPixelsPerUnit = -1/3;
// This hack (see related code in patchDisplay) makes sure the
// element is kept around.
if (dy && mac && webkit) {
- for (var cur = e.target; cur != scroll; cur = cur.parentNode) {
- if (cur.lineObj) {
- cm.display.currentWheelTarget = cur;
- break;
+ 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;
+ }
}
}
}
// estimated pixels/delta value, we just handle horizontal
// scrolling entirely here. It'll be slightly off from native, but
// better than glitching out.
- if (dx && !gecko && !opera && wheelPixelsPerUnit != null) {
+ if (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)));
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);
- updateDisplay(cm, [], {top: top, bottom: bot});
+ updateDisplay(cm, {top: top, bottom: bot});
}
if (wheelSamples < 20) {
}
}
+ // KEY EVENTS
+
+ // Run a handler that was bound to a key.
function doHandleBinding(cm, bound, dropShift) {
if (typeof bound == "string") {
bound = commands[bound];
// Ensure previous input has been read, so that the handler sees a
// consistent view of the document
if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false;
- var doc = cm.doc, prevShift = doc.sel.shift, done = false;
+ var prevShift = cm.display.shift, done = false;
try {
if (isReadOnly(cm)) cm.state.suppressEdits = true;
- if (dropShift) doc.sel.shift = false;
+ if (dropShift) cm.display.shift = false;
done = bound(cm) != Pass;
} finally {
- doc.sel.shift = prevShift;
+ cm.display.shift = prevShift;
cm.state.suppressEdits = false;
}
return done;
}
+ // Collect the currently active keymaps.
function allKeyMaps(cm) {
var maps = cm.state.keyMaps.slice(0);
if (cm.options.extraKeys) maps.push(cm.options.extraKeys);
}
var maybeTransition;
+ // Handle a key from the keydown event.
function handleKeyBinding(cm, e) {
- // Handle auto keymap transitions
+ // Handle automatic keymap transitions
var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto;
clearTimeout(maybeTransition);
if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
if (handled) {
e_preventDefault(e);
restartBlink(cm);
- if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }
signalLater(cm, "keyHandled", cm, name, e);
}
return handled;
}
+ // Handle a key from the keypress event
function handleCharBinding(cm, e, ch) {
var handled = lookupKey("'" + ch + "'", allKeyMaps(cm),
function(b) { return doHandleBinding(cm, b, true); });
return handled;
}
- function onKeyUp(e) {
- var cm = this;
- if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
- if (e.keyCode == 16) cm.doc.sel.shift = false;
- }
-
var lastStoppedKey = null;
function onKeyDown(e) {
var cm = this;
- if (!cm.state.focused) onFocus(cm);
- if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
- if (old_ie && e.keyCode == 27) e.returnValue = false;
- var code = e.keyCode;
+ ensureFocus(cm);
+ if (signalDOMEvent(cm, e)) return;
// IE does strange things with escape.
- cm.doc.sel.shift = code == 16 || e.shiftKey;
- // First give onKeyEvent option a chance to handle this.
+ if (ie_upto10 && e.keyCode == 27) e.returnValue = false;
+ var code = e.keyCode;
+ cm.display.shift = code == 16 || e.shiftKey;
var handled = handleKeyBinding(cm, e);
- if (opera) {
+ 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("");
+ 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 (signalDOMEvent(this, e)) return;
+ if (e.keyCode == 16) this.doc.sel.shift = false;
}
function onKeyPress(e) {
var cm = this;
- if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
+ if (signalDOMEvent(cm, e)) return;
var keyCode = e.keyCode, charCode = e.charCode;
- if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
- if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;
+ 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_lt9) cm.display.inputHasSelection = null;
+ if (ie && !ie_upto8) 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;
- if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1)
- cm.display.wrapper.className += " CodeMirror-focused";
- if (!cm.curOp) {
- resetInput(cm, 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
}
}
if (cm.state.focused) {
signal(cm, "blur", cm);
cm.state.focused = false;
- cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-focused", "");
+ rmClass(cm.display.wrapper, "CodeMirror-focused");
}
clearInterval(cm.display.blinker);
- setTimeout(function() {if (!cm.state.focused) cm.doc.sel.shift = false;}, 150);
+ setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150);
}
- var detectingSelectAll;
+ // 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, sel = cm.doc.sel;
+ var display = cm.display;
if (eventInWidget(display, e) || contextMenuInGutter(cm, e)) return;
var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
- if (!pos || opera) return; // Opera is difficult.
+ 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 && (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)))
- operation(cm, setSelection)(cm.doc, pos, pos);
+ 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: transparent; outline: none;" +
- "border-width: 0; outline: none; overflow: hidden; opacity: .05; -ms-opacity: .05; filter: alpha(opacity=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);";
focusInput(cm);
- resetInput(cm, true);
+ resetInput(cm);
// Adds "Select all" to context menu in FF
- if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " ";
+ if (!cm.somethingSelected()) display.input.value = display.prevInput = " ";
+ 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 extval = display.input.value = "\u200b" + (posEq(sel.from, sel.to) ? "" : display.input.value);
- display.prevInput = "\u200b";
+ 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;
}
}
function rehide() {
display.inputDiv.style.position = "relative";
display.input.style.cssText = oldCSS;
- if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos;
+ if (ie_upto8) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos;
slowPoll(cm);
// Try to detect the user choosing select-all
if (display.input.selectionStart != null) {
- if (!old_ie || ie_lt9) prepareSelectAllHack();
- clearTimeout(detectingSelectAll);
- var i = 0, poll = function(){
- if (display.prevInput == "\u200b" && display.input.selectionStart == 0)
+ if (!ie || ie_upto8) 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) detectingSelectAll = setTimeout(poll, 500);
+ else if (i++ < 10) display.detectingSelectAll = setTimeout(poll, 500);
else resetInput(cm);
};
- detectingSelectAll = setTimeout(poll, 200);
+ display.detectingSelectAll = setTimeout(poll, 200);
}
}
- if (old_ie && !ie_lt9) prepareSelectAllHack();
- if (captureMiddleClick) {
+ if (ie && !ie_upto8) prepareSelectAllHack();
+ if (captureRightClick) {
e_stop(e);
var mouseup = function() {
off(window, "mouseup", mouseup);
}
}
+ 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));
};
- // Make sure a position will be valid after the given change.
- function clipPostChange(doc, change, pos) {
- if (!posLess(change.from, pos)) return clipPos(doc, pos);
- var diff = (change.text.length - 1) - (change.to.line - change.from.line);
- if (pos.line > change.to.line + diff) {
- var preLine = pos.line - diff, lastLine = doc.first + doc.size - 1;
- if (preLine > lastLine) return Pos(lastLine, getLine(doc, lastLine).text.length);
- return clipToLen(pos, getLine(doc, preLine).text.length);
- }
- if (pos.line == change.to.line + diff)
- return clipToLen(pos, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0) +
- getLine(doc, change.to.line).text.length - change.to.ch);
- var inside = pos.line - change.from.line;
- return clipToLen(pos, change.text[inside].length + (inside ? 0 : change.from.ch));
- }
-
- // Hint can be null|"end"|"start"|"around"|{anchor,head}
- function computeSelAfterChange(doc, change, hint) {
- if (hint && typeof hint == "object") // Assumed to be {anchor, head} object
- return {anchor: clipPostChange(doc, change, hint.anchor),
- head: clipPostChange(doc, change, hint.head)};
-
- if (hint == "start") return {anchor: change.from, head: change.from};
-
- var end = changeEnd(change);
- if (hint == "around") return {anchor: change.from, head: end};
- if (hint == "end") return {anchor: end, head: end};
-
- // hint is null, leave the selection alone as much as possible
- var adjustPos = function(pos) {
- if (posLess(pos, change.from)) return pos;
- if (!posLess(change.to, pos)) return end;
-
- var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
- if (pos.line == change.to.line) ch += end.ch - change.to.ch;
- return Pos(line, ch);
- };
- return {anchor: adjustPos(doc.sel.anchor), head: adjustPos(doc.sel.head)};
+ // 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,
return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin};
}
- // Replace the range from from to to by the strings in replacement.
- // change is a {from, to, text [, origin]} object
- function makeChange(doc, change, selUpdate, ignoreReadOnly) {
+ // 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, selUpdate, ignoreReadOnly);
+ if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly);
if (doc.cm.state.suppressEdits) return;
}
// of read-only spans in its range.
var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
if (split) {
- for (var i = split.length - 1; i >= 1; --i)
- makeChangeNoReadonly(doc, {from: split[i].from, to: split[i].to, text: [""]});
- if (split.length)
- makeChangeNoReadonly(doc, {from: split[0].from, to: split[0].to, text: change.text}, selUpdate);
+ for (var i = split.length - 1; i >= 0; --i)
+ makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text});
} else {
- makeChangeNoReadonly(doc, change, selUpdate);
+ makeChangeInner(doc, change);
}
}
- function makeChangeNoReadonly(doc, change, selUpdate) {
- if (change.text.length == 1 && change.text[0] == "" && posEq(change.from, change.to)) return;
- var selAfter = computeSelAfterChange(doc, change, selUpdate);
- addToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);
+ 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 = [];
});
}
- function makeChangeFromHistory(doc, type) {
+ // 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;
- var event = (type == "undo" ? hist.done : hist.undone).pop();
- if (!event) return;
+ var hist = doc.history, event, selAfter = doc.sel;
+ var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;
- var anti = {changes: [], anchorBefore: event.anchorAfter, headBefore: event.headAfter,
- anchorAfter: event.anchorBefore, headAfter: event.headBefore,
- generation: hist.generation};
- (type == "undo" ? hist.undone : hist.done).push(anti);
+ // 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");
var change = event.changes[i];
change.origin = type;
if (filter && !filterChange(doc, change, false)) {
- (type == "undo" ? hist.done : hist.undone).length = 0;
+ source.length = 0;
return;
}
- anti.changes.push(historyChangeFromChange(doc, change));
+ antiChanges.push(historyChangeFromChange(doc, change));
- var after = i ? computeSelAfterChange(doc, change, null)
- : {anchor: event.anchorBefore, head: event.headBefore};
+ var after = i ? computeSelAfterChange(doc, change, null) : lst(source);
makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
+ if (doc.cm) ensureCursorVisible(doc.cm);
var rebased = [];
+ // Propagate to the linked documents
linkedDocs(doc, function(doc, sharedHist) {
if (!sharedHist && indexOf(rebased, doc.history) == -1) {
rebaseHist(doc.history, change);
}
}
+ // Sub-views need their line numbers shifted when text is added
+ // above or below them in the parent document.
function shiftDoc(doc, distance) {
- function shiftPos(pos) {return Pos(pos.line + distance, pos.ch);}
doc.first += distance;
- if (doc.cm) regChange(doc.cm, doc.first, doc.first, distance);
- doc.sel.head = shiftPos(doc.sel.head); doc.sel.anchor = shiftPos(doc.sel.anchor);
- doc.sel.from = shiftPos(doc.sel.from); doc.sel.to = shiftPos(doc.sel.to);
+ 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);
}
+ // 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);
change.removed = getBetween(doc, change.from, change.to);
if (!selAfter) selAfter = computeSelAfterChange(doc, change, null);
- if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans, selAfter);
- else updateDoc(doc, change, spans, selAfter);
+ if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans);
+ else updateDoc(doc, change, spans);
+ setSelectionNoUndo(doc, selAfter, sel_dontScroll);
}
- function makeChangeSingleDocInEditor(cm, change, spans, selAfter) {
+ // 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(doc, getLine(doc, from.line)));
+ checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));
doc.iter(checkWidthStart, to.line + 1, function(line) {
if (line == display.maxLine) {
recomputeMaxLength = true;
});
}
- if (!posLess(doc.sel.head, change.from) && !posLess(change.to, doc.sel.head))
- cm.curOp.cursorActivity = true;
+ if (doc.sel.contains(change.from, change.to) > -1)
+ signalCursorActivity(cm);
- updateDoc(doc, change, spans, selAfter, estimateHeight(cm));
+ updateDoc(doc, change, spans, estimateHeight(cm));
if (!cm.options.lineWrapping) {
doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
- var len = lineLength(doc, line);
+ var len = lineLength(line);
if (len > display.maxLineLength) {
display.maxLine = line;
display.maxLineLength = len;
var lendiff = change.text.length - (to.line - from.line) - 1;
// Remember that these lines changed, for updating the display
- regChange(cm, from.line, to.line + 1, lendiff);
-
- if (hasHandler(cm, "change")) {
- var changeObj = {from: from, to: to,
- text: change.text,
- removed: change.removed,
- origin: change.origin};
- if (cm.curOp.textChanged) {
- for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {}
- cur.next = changeObj;
- } else cm.curOp.textChanged = changeObj;
+ 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);
}
}
function replaceRange(doc, code, from, to, origin) {
if (!to) to = from;
- if (posLess(to, from)) { var tmp = to; to = from; from = tmp; }
+ 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}, null);
- }
-
- // POSITION OBJECT
-
- function Pos(line, ch) {
- if (!(this instanceof Pos)) return new Pos(line, ch);
- this.line = line; this.ch = ch;
- }
- CodeMirror.Pos = Pos;
-
- function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
- function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
- function cmp(a, b) {return a.line - b.line || a.ch - b.ch;}
- function copyPos(x) {return Pos(x.line, x.ch);}
-
- // SELECTION
-
- function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
- function clipPos(doc, pos) {
- if (pos.line < doc.first) return Pos(doc.first, 0);
- var last = doc.first + doc.size - 1;
- if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
- return clipToLen(pos, getLine(doc, pos.line).text.length);
- }
- function clipToLen(pos, linelen) {
- var ch = pos.ch;
- if (ch == null || ch > linelen) return Pos(pos.line, linelen);
- else if (ch < 0) return Pos(pos.line, 0);
- else return pos;
- }
- function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}
-
- // If shift is held, this will move the selection anchor. Otherwise,
- // it'll set the whole selection.
- function extendSelection(doc, pos, other, bias) {
- if (doc.sel.shift || doc.sel.extend) {
- var anchor = doc.sel.anchor;
- if (other) {
- var posBefore = posLess(pos, anchor);
- if (posBefore != posLess(other, anchor)) {
- anchor = pos;
- pos = other;
- } else if (posBefore != posLess(pos, other)) {
- pos = other;
- }
- }
- setSelection(doc, anchor, pos, bias);
- } else {
- setSelection(doc, pos, other || pos, bias);
- }
- if (doc.cm) doc.cm.curOp.userSelChange = true;
- }
-
- function filterSelectionChange(doc, anchor, head) {
- var obj = {anchor: anchor, head: head};
- signal(doc, "beforeSelectionChange", doc, obj);
- if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
- obj.anchor = clipPos(doc, obj.anchor); obj.head = clipPos(doc, obj.head);
- return obj;
- }
-
- // Update the selection. Last two args are only used by
- // updateDoc, since they have to be expressed in the line
- // numbers before the update.
- function setSelection(doc, anchor, head, bias, checkAtomic) {
- if (!checkAtomic && hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) {
- var filtered = filterSelectionChange(doc, anchor, head);
- head = filtered.head;
- anchor = filtered.anchor;
- }
-
- var sel = doc.sel;
- sel.goalColumn = null;
- if (bias == null) bias = posLess(head, sel.head) ? -1 : 1;
- // Skip over atomic spans.
- if (checkAtomic || !posEq(anchor, sel.anchor))
- anchor = skipAtomic(doc, anchor, bias, checkAtomic != "push");
- if (checkAtomic || !posEq(head, sel.head))
- head = skipAtomic(doc, head, bias, checkAtomic != "push");
-
- if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return;
-
- sel.anchor = anchor; sel.head = head;
- var inv = posLess(head, anchor);
- sel.from = inv ? head : anchor;
- sel.to = inv ? anchor : head;
-
- if (doc.cm)
- doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged =
- doc.cm.curOp.cursorActivity = true;
-
- signalLater(doc, "cursorActivity", doc);
- }
-
- function reCheckSelection(cm) {
- setSelection(cm.doc, cm.doc.sel.from, cm.doc.sel.to, null, "push");
- }
-
- function skipAtomic(doc, pos, bias, mayClear) {
- var flipped = false, curPos = pos;
- var dir = bias || 1;
- doc.cantEdit = false;
- search: for (;;) {
- var line = getLine(doc, curPos.line);
- if (line.markedSpans) {
- for (var i = 0; i < line.markedSpans.length; ++i) {
- var sp = line.markedSpans[i], m = sp.marker;
- if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
- (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
- if (mayClear) {
- signal(m, "beforeCursorEnter");
- if (m.explicitlyCleared) {
- if (!line.markedSpans) break;
- else {--i; continue;}
- }
- }
- if (!m.atomic) continue;
- var newPos = m.find()[dir < 0 ? "from" : "to"];
- if (posEq(newPos, curPos)) {
- newPos.ch += dir;
- if (newPos.ch < 0) {
- if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1));
- else newPos = null;
- } else if (newPos.ch > line.text.length) {
- if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0);
- else newPos = null;
- }
- if (!newPos) {
- if (flipped) {
- // Driven in a corner -- no valid cursor position found at all
- // -- try again *with* clearing, if we didn't already
- if (!mayClear) return skipAtomic(doc, pos, bias, true);
- // Otherwise, turn off editing until further notice, and return the start of the doc
- doc.cantEdit = true;
- return Pos(doc.first, 0);
- }
- flipped = true; newPos = pos; dir = -dir;
- }
- }
- curPos = newPos;
- continue search;
- }
- }
- }
- return curPos;
- }
+ makeChange(doc, {from: from, to: to, text: code, origin: origin});
}
- // SCROLLING
+ // SCROLLING THINGS INTO VIEW
- function scrollCursorIntoView(cm) {
- var coords = scrollPosIntoView(cm, cm.doc.sel.head, null, cm.options.cursorScrollMargin);
- if (!cm.state.focused) return;
- var display = cm.display, box = getRect(display.sizer), doScroll = null;
+ // If 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) {
+ 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) + "px; height: " +
+ (coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " +
(coords.bottom - coords.top + scrollerCutOff) + "px; left: " +
coords.left + "px; width: 2px;");
cm.display.lineSpace.appendChild(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 (;;) {
}
}
+ // 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 screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {};
+ var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
+ var screen = display.scroller.clientHeight - scrollerCutOff, result = {};
var docBottom = cm.doc.height + paddingVert(display);
var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
if (y1 < screentop) {
if (newTop != screentop) result.scrollTop = newTop;
}
- var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft;
+ var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;
+ var screenw = display.scroller.clientWidth - scrollerCutOff;
x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth;
var gutterw = display.gutters.offsetWidth;
var atLeft = x1 < gutterw + 10;
return result;
}
- function updateScrollPos(cm, left, top) {
- cm.curOp.updateScrollPos = {scrollLeft: left == null ? cm.doc.scrollLeft : left,
- scrollTop: top == null ? cm.doc.scrollTop : top};
+ // 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};
}
- function addToScrollPos(cm, left, top) {
- var pos = cm.curOp.updateScrollPos || (cm.curOp.updateScrollPos = {scrollLeft: cm.doc.scrollLeft, scrollTop: cm.doc.scrollTop});
- var scroll = cm.display.scroller;
- pos.scrollTop = Math.max(0, Math.min(scroll.scrollHeight - scroll.clientHeight, pos.scrollTop + top));
- pos.scrollLeft = Math.max(0, Math.min(scroll.scrollWidth - scroll.clientWidth, pos.scrollLeft + left));
+ // 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;
+ 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 (!cm.doc.mode.indent) how = "prev";
- else var state = getStateBefore(cm, n);
+ 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;
for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
if (pos < indentation) indentString += spaceStr(indentation - pos);
- if (indentString != curSpaceString)
+ if (indentString != curSpaceString) {
replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
- else if (doc.sel.head.line == n && doc.sel.head.ch < curSpaceString.length)
- setSelection(doc, Pos(n, curSpaceString.length), Pos(n, curSpaceString.length), 1);
+ } 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;
}
- function changeLine(cm, handle, op) {
+ // Utility for applying a change to a line by handle or number,
+ // returning the number and optionally registering the line as
+ // changed.
+ function changeLine(cm, handle, changeType, op) {
var no = handle, line = handle, doc = cm.doc;
if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
else no = lineNo(handle);
if (no == null) return null;
- if (op(line, no)) regChange(cm, no, no + 1);
- else return null;
+ if (op(line, no)) regLineChange(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);
if (dir < 0 && !moveOnce(!first)) break;
var cur = lineObj.text.charAt(ch) || "\n";
var type = isWordChar(cur) ? "w"
- : !group ? null
- : /\s/.test(cur) ? null
+ : 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;
}
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") {
return target;
}
- function findWordAt(line, pos) {
+ // Find the word at the given position (as returned by coordsChar).
+ function findWordAt(doc, pos) {
+ var line = getLine(doc, pos.line).text;
var start = pos.ch, end = pos.ch;
if (line) {
if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end;
while (start > 0 && check(line.charAt(start - 1))) --start;
while (end < line.length && check(line.charAt(end))) ++end;
}
- return {from: Pos(pos.line, start), to: Pos(pos.line, end)};
+ return new Range(Pos(pos.line, start), Pos(pos.line, end));
}
- function selectLine(cm, line) {
- extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0)));
- }
+ // EDITOR METHODS
- // PROTOTYPE
+ // The publicly visible API. Note that methodOp(f) means
+ // 'wrap f in an operation, performed on its `this` parameter'.
- // The publicly visible API. Note that operation(null, 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,
}
},
- addOverlay: operation(null, function(spec, options) {
+ 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: operation(null, function(spec) {
+ removeOverlay: methodOp(function(spec) {
var overlays = this.state.overlays;
for (var i = 0; i < overlays.length; ++i) {
var cur = overlays[i].modeSpec;
}
}),
- indentLine: operation(null, function(n, dir, aggressive) {
+ 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: operation(null, function(how) {
- var sel = this.doc.sel;
- if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how, true);
- var e = sel.to.line - (sel.to.ch ? 0 : 1);
- for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how);
+ 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 start = Math.max(end, range.from().line);
+ var to = range.to();
+ end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
+ for (var j = start; j < end; ++j)
+ indentLine(this, j, how);
+ } 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
var stream = new StringStream(line.text, this.options.tabSize);
while (stream.pos < pos.ch && !stream.eol()) {
stream.start = stream.pos;
- var style = mode.token(stream, state);
+ var style = readToken(mode, stream, state);
}
return {start: stream.start,
end: stream.pos,
string: stream.current(),
- className: style || null, // Deprecated, use 'type' instead
type: style || null,
state: state};
},
pos = clipPos(this.doc, pos);
var styles = getLineStyles(this, getLine(this.doc, pos.line));
var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
- if (ch == 0) return styles[2];
- for (;;) {
+ var 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 return styles[mid * 2 + 2];
+ 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) {
},
cursorCoords: function(start, mode) {
- var pos, sel = this.doc.sel;
- if (start == null) pos = sel.head;
+ 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 ? sel.from : sel.to;
+ else pos = start ? range.from() : range.to();
return cursorCoords(this, pos, mode || "page");
},
if (line < this.doc.first) line = this.doc.first;
else if (line > last) { line = last; end = true; }
var lineObj = getLine(this.doc, line);
- return intoCoordSystem(this, getLine(this.doc, line), {top: 0, left: 0}, mode || "page").top +
- (end ? lineObj.height : 0);
+ 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: operation(null, function(line, gutterID, value) {
- return changeLine(this, line, function(line) {
+ setGutterMarker: methodOp(function(line, gutterID, value) {
+ return changeLine(this, line, "gutter", function(line) {
var markers = line.gutterMarkers || (line.gutterMarkers = {});
markers[gutterID] = value;
if (!value && isEmpty(markers)) line.gutterMarkers = null;
});
}),
- clearGutter: operation(null, function(gutterID) {
+ 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;
- regChange(cm, i, i + 1);
+ regLineChange(cm, i, "gutter");
if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
}
++i;
});
}),
- addLineClass: operation(null, function(handle, where, cls) {
- return changeLine(this, handle, function(line) {
+ addLineClass: methodOp(function(handle, where, cls) {
+ return changeLine(this, handle, "class", function(line) {
var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
if (!line[prop]) line[prop] = cls;
else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").test(line[prop])) return false;
});
}),
- removeLineClass: operation(null, function(handle, where, cls) {
- return changeLine(this, handle, function(line) {
+ removeLineClass: methodOp(function(handle, where, cls) {
+ return changeLine(this, handle, "class", function(line) {
var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
var cur = line[prop];
if (!cur) return false;
});
}),
- addLineWidget: operation(null, function(handle, node, options) {
+ addLineWidget: methodOp(function(handle, node, options) {
return addLineWidget(this, handle, node, options);
}),
widgets: line.widgets};
},
- getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};},
+ getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo};},
addWidget: function(pos, node, scroll, vert, horiz) {
var display = this.display;
scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
},
- triggerOnKeyDown: operation(null, onKeyDown),
- triggerOnKeyPress: operation(null, onKeyPress),
- triggerOnKeyUp: operation(null, onKeyUp),
+ triggerOnKeyDown: methodOp(onKeyDown),
+ triggerOnKeyPress: methodOp(onKeyPress),
+ triggerOnKeyUp: methodOp(onKeyUp),
execCommand: function(cmd) {
if (commands.hasOwnProperty(cmd))
return cur;
},
- moveH: operation(null, function(dir, unit) {
- var sel = this.doc.sel, pos;
- if (sel.shift || sel.extend || posEq(sel.from, sel.to))
- pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually);
- else
- pos = dir < 0 ? sel.from : sel.to;
- extendSelection(this.doc, pos, pos, dir);
+ 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: operation(null, function(dir, unit) {
- var sel = this.doc.sel;
- if (!posEq(sel.from, sel.to)) replaceRange(this.doc, "", sel.from, sel.to, "+delete");
- else replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete");
- this.curOp.userSelChange = true;
+ 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) {
return cur;
},
- moveV: operation(null, function(dir, unit) {
- var sel = this.doc.sel, target, goal;
- if (sel.shift || sel.extend || posEq(sel.from, sel.to)) {
- var pos = cursorCoords(this, sel.head, "div");
- if (sel.goalColumn != null) pos.left = sel.goalColumn;
- target = findPosV(this, pos, dir, unit);
- if (unit == "page") addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top);
- goal = pos.left;
- } else {
- target = dir < 0 ? sel.from : sel.to;
- }
- extendSelection(this.doc, target, target, dir);
- if (goal != null) sel.goalColumn = goal;
+ 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];
}),
toggleOverwrite: function(value) {
if (value != null && value == this.state.overwrite) return;
if (this.state.overwrite = !this.state.overwrite)
- this.display.cursor.className += " CodeMirror-overwrite";
+ addClass(this.display.cursorDiv, "CodeMirror-overwrite");
else
- this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", "");
+ rmClass(this.display.cursorDiv, "CodeMirror-overwrite");
+
+ signal(this, "overwriteToggle", this, this.state.overwrite);
},
- hasFocus: function() { return document.activeElement == this.display.input; },
+ hasFocus: function() { return activeElt() == this.display.input; },
- scrollTo: operation(null, function(x, y) {
- updateScrollPos(this, x, y);
+ 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, co = scrollerCutOff;
clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co};
},
- scrollIntoView: operation(null, function(range, margin) {
- if (range == null) range = {from: this.doc.sel.head, to: null};
- else if (typeof range == "number") range = {from: Pos(range, 0), to: null};
- else if (range.from == null) range = {from: range, to: null};
+ 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;
- if (!margin) margin = 0;
+ range.margin = margin || 0;
- var coords = range;
if (range.from.line != null) {
- this.curOp.scrollToPos = {from: range.from, to: range.to, margin: margin};
- coords = {from: cursorCoords(this, range.from),
- to: cursorCoords(this, range.to)};
- }
- var sPos = calculateScrollPos(this, Math.min(coords.from.left, coords.to.left),
- Math.min(coords.from.top, coords.to.top) - margin,
- Math.max(coords.from.right, coords.to.right),
- Math.max(coords.from.bottom, coords.to.bottom) + margin);
- updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop);
+ 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: operation(null, function(width, height) {
+ setSize: methodOp(function(width, height) {
function interpret(val) {
return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
}
if (width != null) this.display.wrapper.style.width = interpret(width);
if (height != null) this.display.wrapper.style.height = interpret(height);
- if (this.options.lineWrapping)
- this.display.measureLineCache.length = this.display.measureLineCachePos = 0;
+ if (this.options.lineWrapping) clearLineMeasurementCache(this);
this.curOp.forceUpdate = true;
signal(this, "refresh", this);
}),
operation: function(f){return runInOp(this, f);},
- refresh: operation(null, function() {
+ refresh: methodOp(function() {
var oldHeight = this.display.cachedTextHeight;
- clearCaches(this);
- updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop);
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: operation(null, function(doc) {
+ swapDoc: methodOp(function(doc) {
var old = this.doc;
old.cm = null;
attachDoc(this, doc);
clearCaches(this);
- resetInput(this, true);
- updateScrollPos(this, doc.scrollLeft, doc.scrollTop);
+ resetInput(this);
+ this.scrollTo(doc.scrollLeft, doc.scrollTop);
signalLater(this, "swapDoc", this, old);
return old;
}),
// OPTION DEFAULTS
- var optionHandlers = CodeMirror.optionHandlers = {};
-
// 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;
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
option("keyMap", "default", keyMapChanged);
option("extraKeys", null);
- option("onKeyEvent", null);
- option("onDragEvent", null);
-
option("lineWrapping", false, wrappingChanged, true);
option("gutters", [], function(cm) {
setGuttersForLineNumbers(cm.options);
cm.display.disabled = true;
} else {
cm.display.disabled = false;
- if (!val) resetInput(cm, true);
+ if (!val) resetInput(cm);
}
});
- option("disableInput", false, function(cm, val) {if (!val) resetInput(cm, true);}, true);
+ option("disableInput", false, function(cm, val) {if (!val) resetInput(cm);}, true);
option("dragDrop", true);
option("cursorBlinkRate", 530);
option("flattenSpans", true, resetModeState, true);
option("addModeClass", false, resetModeState, true);
option("pollInterval", 100);
- option("undoDepth", 40, function(cm, val){cm.doc.history.undoDepth = val;});
- option("historyEventDelay", 500);
+ 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("crudeMeasuringFrom", 10000);
option("moveInputWithCursor", true, function(cm, val) {
if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0;
});
// 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) {
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)) {
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];
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] = {});
helpers[type]._global.push({pred: predicate, val: value});
};
- // UTILITIES
-
- CodeMirror.isWordChar = isWordChar;
-
// MODE STATE HANDLING
- // Utility functions for working with state. Exported because modes
- // sometimes need to do this.
- function copyState(mode, state) {
+ // 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 = {};
nstate[n] = val;
}
return nstate;
- }
- CodeMirror.copyState = copyState;
+ };
- function startState(mode, a1, a2) {
+ var startState = CodeMirror.startState = function(mode, a1, a2) {
return mode.startState ? mode.startState(a1, a2) : true;
- }
- CodeMirror.startState = startState;
+ };
+ // 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);
// 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()));},
+ 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) {
- var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
- if (!sel && cm.getLine(from.line).length == from.ch)
- cm.replaceRange("", from, Pos(from.line + 1, 0), "+delete");
- else cm.replaceRange("", from, sel ? to : Pos(from.line), "+delete");
+ 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) {
- var l = cm.getCursor().line;
- cm.replaceRange("", Pos(l, 0), Pos(l), "+delete");
+ deleteNearSelection(cm, function(range) {
+ return {from: Pos(range.from().line, 0),
+ to: clipPos(cm.doc, Pos(range.to().line + 1, 0))};
+ });
},
delLineLeft: function(cm) {
- var cur = cm.getCursor();
- cm.replaceRange("", Pos(cur.line, 0), cur, "+delete");
+ deleteNearSelection(cm, function(range) {
+ return {from: Pos(range.from().line, 0), to: range.from()};
+ });
},
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.extendSelection(lineStart(cm, cm.getCursor().line));
+ cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); }, sel_move);
},
goLineStartSmart: function(cm) {
- var cur = cm.getCursor(), start = lineStart(cm, cur.line);
- var line = cm.getLineHandle(start.line);
- var order = getOrder(line);
- if (!order || order[0].level == 0) {
- var firstNonWS = Math.max(0, line.text.search(/\S/));
- var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch;
- cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS));
- } else cm.extendSelection(start);
+ cm.extendSelectionsBy(function(range) {
+ var start = lineStart(cm, range.head.line);
+ var line = cm.getLineHandle(start.line);
+ var order = getOrder(line);
+ if (!order || order[0].level == 0) {
+ var firstNonWS = Math.max(0, line.text.search(/\S/));
+ var inWS = range.head.line == start.line && range.head.ch <= firstNonWS && range.head.ch;
+ return Pos(start.line, inWS ? 0 : firstNonWS);
+ }
+ return start;
+ }, sel_move);
},
goLineEnd: function(cm) {
- cm.extendSelection(lineEnd(cm, cm.getCursor().line));
+ cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); }, sel_move);
},
goLineRight: function(cm) {
- var top = cm.charCoords(cm.getCursor(), "div").top + 5;
- cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"));
+ 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) {
- var top = cm.charCoords(cm.getCursor(), "div").top + 5;
- cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div"));
+ cm.extendSelectionsBy(function(range) {
+ var top = cm.charCoords(range.head, "div").top + 5;
+ return cm.coordsChar({left: 0, top: top}, "div");
+ }, sel_move);
},
goLineUp: function(cm) {cm.moveV(-1, "line");},
goLineDown: function(cm) {cm.moveV(1, "line");},
indentAuto: function(cm) {cm.indentSelection("smart");},
indentMore: function(cm) {cm.indentSelection("add");},
indentLess: function(cm) {cm.indentSelection("subtract");},
- insertTab: function(cm) {
- cm.replaceSelection("\t", "end", "+input");
+ 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.replaceSelection("\t", "end", "+input");
+ else cm.execCommand("insertTab");
},
transposeChars: function(cm) {
- var cur = cm.getCursor(), line = cm.getLine(cur.line);
- if (cur.ch > 0 && cur.ch < line.length - 1)
- cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
- Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1));
+ runInOp(cm, function() {
+ var ranges = cm.listSelections();
+ for (var i = 0; i < ranges.length; i++) {
+ var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;
+ if (cur.ch > 0 && cur.ch < line.length - 1)
+ cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
+ Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1));
+ }
+ });
},
newlineAndIndent: function(cm) {
- operation(cm, function() {
- cm.replaceSelection("\n", "end", "+input");
- cm.indentLine(cm.getCursor().line, null, true);
- })();
+ 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();}
};
"End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
"Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
"Tab": "defaultTab", "Shift-Tab": "indentAuto",
- "Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
+ "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
+ "Esc": "singleSelection"
};
// Note that the save and find-related commands aren't defined by
- // default. Unknown commands are simply ignored.
+ // 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", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
+ "Ctrl-Home": "goDocStart", "Ctrl-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
"Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
"Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
"Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
"Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
+ "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
fallthrough: "basic"
};
keyMap.macDefault = {
"Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
"Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
"Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft",
+ "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection",
fallthrough: ["basic", "emacsy"]
};
- keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
+ // 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["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
// KEYMAP DISPATCH
else return val;
}
- function lookupKey(name, maps, handle) {
+ // Given an array of keymaps and a key name, call handle on any
+ // bindings found, until that returns a truthy value, at which point
+ // we consider the key handled. Implements things like binding a key
+ // to false stopping further handling and keymap fallthrough.
+ var lookupKey = CodeMirror.lookupKey = function(name, maps, handle) {
function lookup(map) {
map = getKeyMap(map);
var found = map[name];
if (fallthrough == null) return false;
if (Object.prototype.toString.call(fallthrough) != "[object Array]")
return lookup(fallthrough);
- for (var i = 0, e = fallthrough.length; i < e; ++i) {
+ for (var i = 0; i < fallthrough.length; ++i) {
var done = lookup(fallthrough[i]);
if (done) return done;
}
var done = lookup(maps[i]);
if (done) return done != "stop";
}
- }
- function isModifierKey(event) {
+ };
+
+ // Modifier key presses don't count as 'real' key presses for the
+ // purpose of keymap fallthrough.
+ var isModifierKey = CodeMirror.isModifierKey = function(event) {
var name = keyNames[event.keyCode];
return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
- }
- function keyName(event, noShift) {
- if (opera && event.keyCode == 34 && event["char"]) return false;
+ };
+
+ // 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 name = keyNames[event.keyCode];
if (name == null || event.altGraphKey) return false;
if (event.altKey) name = "Alt-" + name;
if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name;
if (!noShift && event.shiftKey) name = "Shift-" + name;
return name;
- }
- CodeMirror.lookupKey = lookupKey;
- CodeMirror.isModifierKey = isModifierKey;
- CodeMirror.keyName = keyName;
+ };
// FROMTEXTAREA
// Set autofocus to true if this textarea is focused, or if it has
// autofocus and no other element is focused.
if (options.autofocus == null) {
- var hasFocus = document.body;
- // doc.activeElement occasionally throws on IE
- try { hasFocus = document.activeElement; } catch(e) {}
+ var hasFocus = activeElt();
options.autofocus = hasFocus == textarea ||
textarea.getAttribute("autofocus") != null && hasFocus == document.body;
}
// Fed to the mode parsers, provides helper functions to make
// parsers more succinct.
- // The character stream used by a mode's parser.
- function StringStream(string, tabSize) {
+ 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;},
finally { this.lineStart -= n; }
}
};
- CodeMirror.StringStream = StringStream;
// TEXTMARKERS
- function TextMarker(doc, type) {
+ // 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;
- }
- CodeMirror.TextMarker = TextMarker;
+ };
eventMixin(TextMarker);
+ // Clear the marker.
TextMarker.prototype.clear = function() {
if (this.explicitlyCleared) return;
var cm = this.doc.cm, withOp = cm && !cm.curOp;
for (var i = 0; i < this.lines.length; ++i) {
var line = this.lines[i];
var span = getMarkedSpanFor(line.markedSpans, this);
- if (span.to != null) max = lineNo(line);
+ 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)
- min = lineNo(line);
- else if (this.collapsed && !lineIsHidden(this.doc, line) && cm)
+ 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(cm.doc, this.lines[i]), len = lineLength(cm.doc, visual);
+ var visual = visualLine(this.lines[i]), len = lineLength(visual);
if (len > cm.display.maxLineLength) {
cm.display.maxLine = visual;
cm.display.maxLineLength = len;
}
}
- if (min != null && cm) regChange(cm, min, max + 1);
+ 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);
+ if (cm) reCheckSelection(cm.doc);
}
+ if (cm) signalLater(cm, "markerCleared", cm, this);
if (withOp) endOperation(cm);
+ if (this.parent) this.parent.clear();
};
- TextMarker.prototype.find = function(bothSides) {
+ // 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 || span.to != null) {
- var found = lineNo(line);
- if (span.from != null) from = Pos(found, span.from);
- if (span.to != null) to = Pos(found, span.to);
+ if (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;
}
}
- if (this.type == "bookmark" && !bothSides) return from;
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(), cm = this.doc.cm;
+ var pos = this.find(-1, true), widget = this, cm = this.doc.cm;
if (!pos || !cm) return;
- if (this.type != "bookmark") pos = pos.from;
- var line = getLine(this.doc, pos.line);
- clearCachedMeasurement(cm, line);
- if (pos.line >= cm.display.showingFrom && pos.line < cm.display.showingTo) {
- for (var node = cm.display.lineDiv.firstChild; node; node = node.nextSibling) if (node.lineObj == line) {
- if (node.offsetHeight != line.height) updateLineHeight(line, node.offsetHeight);
- break;
+ runInOp(cm, function() {
+ var line = pos.line, lineN = lineNo(pos.line);
+ var view = findViewForLine(cm, lineN);
+ if (view) {
+ clearLineMeasurementCacheFor(view);
+ cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
}
- runInOp(cm, function() {
- cm.curOp.selectionChanged = cm.curOp.forceUpdate = cm.curOp.updateMaxLine = 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) {
}
};
+ // 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);
- if (options) copyObj(options, marker);
- if (posLess(to, from) || posEq(from, to) && marker.clearWhenEmpty !== false)
+ 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.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget");
- if (!options.handleMouseEvents) marker.replacedWith.ignoreEvents = true;
+ marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget");
+ if (!options.handleMouseEvents) marker.widgetNode.ignoreEvents = true;
+ if (options.insertLeft) marker.widgetNode.insertLeft = true;
}
if (marker.collapsed) {
if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
}
if (marker.addToHistory)
- addToHistory(doc, {from: from, to: to, origin: "markText"},
- {head: doc.sel.head, anchor: doc.sel.anchor}, NaN);
+ 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(doc, line) == cm.display.maxLine)
+ if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
updateMaxLine = true;
- var span = {from: null, to: null, marker: marker};
- if (curLine == from.line) span.from = from.ch;
- if (curLine == to.line) span.to = to.ch;
if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0);
- addMarkedSpan(line, span);
+ 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);
});
marker.atomic = true;
}
if (cm) {
+ // Sync editor state
if (updateMaxLine) cm.curOp.updateMaxLine = true;
- if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.collapsed)
+ if (marker.collapsed)
regChange(cm, from.line, to.line + 1);
- if (marker.atomic) reCheckSelection(cm);
+ else if (marker.className || marker.title || marker.startStyle || marker.endStyle)
+ 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
- function SharedTextMarker(markers, primary) {
+ // 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, me = this; i < markers.length; ++i) {
+ for (var i = 0; i < markers.length; ++i)
markers[i].parent = this;
- on(markers[i], "clear", function(){me.clear();});
- }
- }
- CodeMirror.SharedTextMarker = SharedTextMarker;
+ };
eventMixin(SharedTextMarker);
SharedTextMarker.prototype.clear = function() {
this.markers[i].clear();
signalLater(this, "clear");
};
- SharedTextMarker.prototype.find = function() {
- return this.primary.find();
+ 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.replacedWith;
+ var widget = options.widgetNode;
linkedDocs(doc, function(doc) {
- if (widget) options.replacedWith = widget.cloneNode(true);
+ 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;
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({from: span.from,
- to: endsAfter ? null : span.to,
- marker: marker});
+ (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({from: startsBefore ? null : span.from - endCh,
- to: span.to == null ? null : span.to - endCh,
- marker: marker});
+ (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) {
var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
if (!oldFirst && !oldLast) return null;
- var startCh = change.from.ch, endCh = change.to.ch, isInsert = posEq(change.from, change.to);
+ 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);
if (gap > 0 && first)
for (var i = 0; i < first.length; ++i)
if (first[i].to == null)
- (gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker});
+ (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];
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);
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 (!markers) return null;
var parts = [{from: from, to: to}];
for (var i = 0; i < markers.length; ++i) {
- var mk = markers[i], m = mk.find();
+ var mk = markers[i], m = mk.find(0);
for (var j = 0; j < parts.length; ++j) {
var p = parts[j];
- if (posLess(p.to, m.from) || posLess(m.to, p.from)) continue;
- var newParts = [j, 1];
- if (posLess(p.from, m.from) || !mk.inclusiveLeft && posEq(p.from, m.from))
+ 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 (posLess(m.to, p.to) || !mk.inclusiveRight && posEq(p.to, m.to))
+ 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;
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) {
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(true);
+ 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;
}
}
- function visualLine(doc, line) {
+ // 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 = getLine(doc, merged.find().from.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.replacedWith) continue;
+ 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().to, endLine = getLine(doc, end.line);
- return lineIsHiddenInner(doc, endLine, getMarkedSpanFor(endLine.markedSpans, span.marker));
+ 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.replacedWith && sp.from == span.to &&
+ 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;
}
}
- function detachMarkedSpans(line) {
- var spans = line.markedSpans;
- if (!spans) return;
- for (var i = 0; i < spans.length; ++i)
- spans[i].marker.detachLine(line);
- line.markedSpans = null;
- }
-
- function attachMarkedSpans(line, spans) {
- if (!spans) return;
- for (var i = 0; i < spans.length; ++i)
- spans[i].marker.attachLine(line);
- line.markedSpans = spans;
- }
-
// LINE WIDGETS
+ // 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.node = node;
};
eventMixin(LineWidget);
- function widgetOperation(f) {
- return function() {
- var withOp = !this.cm.curOp;
- if (withOp) startOperation(this.cm);
- try {var result = f.apply(this, arguments);}
- finally {if (withOp) endOperation(this.cm);}
- return result;
- };
+
+ function adjustScrollWhenAboveVisible(cm, line, diff) {
+ if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
+ addToScrollPos(cm, null, diff);
}
- LineWidget.prototype.clear = widgetOperation(function() {
- var ws = this.line.widgets, no = lineNo(this.line);
+
+ 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) this.line.widgets = null;
- var aboveVisible = heightAtLine(this.cm, this.line) < this.cm.doc.scrollTop;
- updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this)));
- if (aboveVisible) addToScrollPos(this.cm, 0, -this.height);
- regChange(this.cm, no, no + 1);
- });
- LineWidget.prototype.changed = widgetOperation(function() {
- var oldH = this.height;
+ 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;
- updateLineHeight(this.line, this.line.height + diff);
- var no = lineNo(this.line);
- regChange(this.cm, no, no + 1);
- });
+ 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 (!widget.node.parentNode || widget.node.parentNode.nodeType != 1)
+ if (!contains(document.body, widget.node))
removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative"));
return widget.height = widget.node.offsetHeight;
}
function addLineWidget(cm, handle, node, options) {
var widget = new LineWidget(cm, node, options);
if (widget.noHScroll) cm.display.alignWidgets = true;
- changeLine(cm, handle, function(line) {
+ changeLine(cm, 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) || widget.showIfHidden) {
- var aboveVisible = heightAtLine(cm, line) < cm.doc.scrollTop;
+ if (!lineIsHidden(cm.doc, line)) {
+ var aboveVisible = heightAtLine(line) < cm.doc.scrollTop;
updateLineHeight(line, line.height + widgetHeight(widget));
- if (aboveVisible) addToScrollPos(cm, 0, widget.height);
+ if (aboveVisible) addToScrollPos(cm, null, widget.height);
+ cm.curOp.forceUpdate = true;
}
return true;
});
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 (estHeight != line.height) updateLineHeight(line, estHeight);
}
+ // Detach a line from the document tree and its markers.
function cleanUpLine(line) {
line.parent = null;
detachMarkedSpans(line);
}
- // Run the given mode's parser over a line, update the styles
- // array, which contains alternating fragments of text and CSS
- // classes.
- function runMode(cm, text, mode, state, f, forceToEnd) {
+ 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) {
+ var style = mode.token(stream, state);
+ if (stream.pos <= stream.start)
+ throw new Error("Mode " + mode.name + " failed to advance stream.");
+ return style;
+ }
+
+ // 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;
- if (text == "" && mode.blankLine) mode.blankLine(state);
+ if (text == "") extractLineClasses(callBlankLine(mode, state), lineClasses);
while (!stream.eol()) {
if (stream.pos > cm.options.maxHighlightLength) {
flattenSpans = false;
stream.pos = text.length;
style = null;
} else {
- style = mode.token(stream, state);
+ style = extractLineClasses(readToken(mode, stream, state), lineClasses);
}
if (cm.options.addModeClass) {
var mName = CodeMirror.innerMode(mode, state).mode.name;
}
}
+ // 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];
+ 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);
- }, forceToEnd);
+ }, lineClasses, forceToEnd);
// Run overlays, adjust style array.
for (var o = 0; o < cm.state.overlays.length; ++o) {
}
if (!style) return;
if (overlay.opaque) {
- st.splice(start, i - start, end, style);
+ 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 + " " + style : style;
+ st[start+1] = (cur ? cur + " " : "") + "cm-overlay " + style;
}
}
- });
+ }, lineClasses);
}
- return st;
+ return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null};
}
function getLineStyles(cm, line) {
- if (!line.styles || line.styles[0] != cm.state.modeGen)
- line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
+ 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;
+ }
return line.styles;
}
// Lightweight form of highlight -- proceed over this line and
- // update state, but don't save a style array.
+ // 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 == "" && mode.blankLine) mode.blankLine(state);
+ if (text == "") callBlankLine(mode, state);
while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) {
- mode.token(stream, state);
+ 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, builder) {
- if (!style) return null;
- for (;;) {
- var lineClass = style.match(/(?:^|\s+)line-(background-)?(\S+)/);
- if (!lineClass) break;
- style = style.slice(0, lineClass.index) + style.slice(lineClass.index + lineClass[0].length);
- var prop = lineClass[1] ? "bgClass" : "textClass";
- if (builder[prop] == null)
- builder[prop] = lineClass[2];
- else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(builder[prop]))
- builder[prop] += " " + lineClass[2];
- }
- if (/^\s*$/.test(style)) return null;
- var cache = builder.cm.options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
+ function interpretTokenStyle(style, options) {
+ if (!style || /^\s*$/.test(style)) return null;
+ var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
return cache[style] ||
(cache[style] = style.replace(/\S+/g, "cm-$&"));
}
- function buildLineContent(cm, realLine, measure, copyWidgets) {
- var merged, line = realLine, empty = true;
- while (merged = collapsedSpanAtStart(line))
- line = getLine(cm.doc, merged.find().from.line);
-
- var builder = {pre: elt("pre"), col: 0, pos: 0,
- measure: null, measuredSomething: false, cm: cm,
- copyWidgets: copyWidgets};
-
- do {
- if (line.text) empty = false;
- builder.measure = line == realLine && measure;
+ // 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 = builder.measure ? buildTokenMeasure : buildToken;
- if ((old_ie || webkit) && cm.getOption("lineWrapping"))
+ 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);
- var next = insertLineContent(line, builder, getLineStyles(cm, line));
- if (measure && line == realLine && !builder.measuredSomething) {
- measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure));
- builder.measuredSomething = true;
- }
- if (next) line = getLine(cm.doc, next.to.line);
- } while (next);
-
- if (measure && !builder.measuredSomething && !measure[0])
- measure[0] = builder.pre.appendChild(empty ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure));
- if (!builder.pre.firstChild && !lineIsHidden(cm.doc, realLine))
- builder.pre.appendChild(document.createTextNode("\u00a0"));
-
- var order;
- // Work around problem with the reported dimensions of single-char
- // direction spans on IE (issue #1129). See also the comment in
- // cursorCoords.
- if (measure && ie && (order = getOrder(line))) {
- var l = order.length - 1;
- if (order[l].from == order[l].to) --l;
- var last = order[l], prev = order[l - 1];
- if (last.from + 1 == last.to && prev && last.level < prev.level) {
- var span = measure[builder.pos - 1];
- if (span) span.parentNode.insertBefore(span.measureRight = zeroWidthElement(cm.display.measure),
- span.nextSibling);
- }
- }
-
- var textClass = builder.textClass ? builder.textClass + " " + (realLine.textClass || "") : realLine.textClass;
- if (textClass) builder.pre.className = textClass;
-
- signal(cm, "renderLine", cm, realLine, builder.pre);
+ if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line)))
+ builder.addToken = buildTokenBadBidi(builder.addToken, order);
+ builder.map = [];
+ insertLineContent(line, builder, getLineStyles(cm, line));
+ 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({});
+ }
+ }
+
+ signal(cm, "renderLine", cm, lineView.line, builder.pre);
return builder;
}
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) {
if (!text) return;
- var special = builder.cm.options.specialChars;
+ 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_upto8) mustWrap = true;
+ builder.pos += text.length;
} else {
var content = document.createDocumentFragment(), pos = 0;
while (true) {
var m = special.exec(text);
var skipped = m ? m.index - pos : text.length - pos;
if (skipped) {
- content.appendChild(document.createTextNode(text.slice(pos, pos + skipped)));
+ var txt = document.createTextNode(text.slice(pos, pos + skipped));
+ if (ie_upto8) 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;
- content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
+ var txt = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
builder.col += tabWidth;
} else {
- var token = builder.cm.options.specialCharPlaceholder(m[0]);
- content.appendChild(token);
+ var txt = builder.cm.options.specialCharPlaceholder(m[0]);
+ if (ie_upto8) 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 || builder.measure) {
+ if (style || startStyle || endStyle || mustWrap) {
var fullStyle = style || "";
if (startStyle) fullStyle += startStyle;
if (endStyle) fullStyle += endStyle;
var token = elt("span", [content], fullStyle);
if (title) token.title = title;
- return builder.pre.appendChild(token);
- }
- builder.pre.appendChild(content);
- }
-
- function buildTokenMeasure(builder, text, style, startStyle, endStyle) {
- var wrapping = builder.cm.options.lineWrapping;
- for (var i = 0; i < text.length; ++i) {
- var start = i == 0, to = i + 1;
- while (to < text.length && isExtendingChar(text.charAt(to))) ++to;
- var ch = text.slice(i, to);
- i = to - 1;
- if (i && wrapping && spanAffectsWrapping(text, i))
- builder.pre.appendChild(elt("wbr"));
- var old = builder.measure[builder.pos];
- var span = builder.measure[builder.pos] =
- buildToken(builder, ch, style,
- start && startStyle, i == text.length - 1 && endStyle);
- if (old) span.leftSide = old.leftSide || old;
- // In IE single-space nodes wrap differently than spaces
- // embedded in larger text nodes, except when set to
- // white-space: normal (issue #1268).
- if (old_ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) &&
- i < text.length - 1 && !/\s/.test(text.charAt(i + 1)))
- span.style.whiteSpace = "normal";
- builder.pos += ch.length;
- }
- if (text.length) builder.measuredSomething = true;
+ return builder.content.appendChild(token);
+ }
+ builder.content.appendChild(content);
}
function buildTokenSplitSpaces(inner) {
return out;
}
return function(builder, text, style, startStyle, endStyle, title) {
- return inner(builder, text.replace(/ {3,}/g, split), style, startStyle, endStyle, title);
+ inner(builder, text.replace(/ {3,}/g, split), style, startStyle, endStyle, title);
};
}
- function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
- var widget = !ignoreWidget && marker.replacedWith;
- if (widget) {
- if (builder.copyWidgets) widget = widget.cloneNode(true);
- builder.pre.appendChild(widget);
- if (builder.measure) {
- if (size) {
- builder.measure[builder.pos] = widget;
- } else {
- var elt = zeroWidthElement(builder.cm.display.measure);
- if (marker.type == "bookmark" && !marker.insertLeft)
- builder.measure[builder.pos] = builder.pre.appendChild(elt);
- else if (builder.measure[builder.pos])
- return;
- else
- builder.measure[builder.pos] = builder.pre.insertBefore(elt, widget);
+ // 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;
}
- builder.measuredSomething = true;
+ 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;
}
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));
+ builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder.cm.options));
return;
}
} else if (sp.from > pos && nextChange > sp.from) {
nextChange = sp.from;
}
- if (m.type == "bookmark" && sp.from == pos && m.replacedWith) foundBookmarks.push(m);
+ if (m.type == "bookmark" && sp.from == pos && m.widgetNode) foundBookmarks.push(m);
}
if (collapsed && (collapsed.from || 0) == pos) {
- buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos,
+ buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
collapsed.marker, collapsed.from == null);
- if (collapsed.to == null) return collapsed.marker.find();
+ if (collapsed.to == null) return;
}
if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j)
buildCollapsedSpan(builder, 0, foundBookmarks[j]);
spanStartStyle = "";
}
text = allText.slice(at, at = styles[i++]);
- style = interpretTokenStyle(styles[i++], builder);
+ style = interpretTokenStyle(styles[i++], builder.cm.options);
}
}
}
// DOCUMENT DATA STRUCTURE
- function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) {
+ // 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);
var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;
- // First adjust the line structure
- if (from.ch == 0 && to.ch == 0 && lastText == "" &&
- (!doc.cm || doc.cm.options.wholeLineUpdateBefore)) {
+ // Adjust the line structure
+ if (isWholeLineUpdate(doc, change)) {
// This is a whole-line replace. Treated specially to make
// sure line objects move the way they are supposed to.
- for (var i = 0, e = text.length - 1, added = []; i < e; ++i)
+ for (var i = 0, added = []; i < text.length - 1; ++i)
added.push(new Line(text[i], spansFor(i), estimateHeight));
update(lastLine, lastLine.text, lastSpans);
if (nlines) doc.remove(from.line, nlines);
if (text.length == 1) {
update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
} else {
- for (var added = [], i = 1, e = text.length - 1; i < e; ++i)
+ for (var added = [], i = 1; i < text.length - 1; ++i)
added.push(new Line(text[i], spansFor(i), estimateHeight));
added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
} else {
update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
- for (var i = 1, e = text.length - 1, added = []; i < e; ++i)
+ for (var i = 1, added = []; i < text.length - 1; ++i)
added.push(new Line(text[i], spansFor(i), estimateHeight));
if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
doc.insert(from.line + 1, added);
}
signalLater(doc, "change", doc, change);
- setSelection(doc, selAfter.anchor, selAfter.head, null, true);
}
+ // 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, e = lines.length, height = 0; i < e; ++i) {
+ for (var i = 0, height = 0; i < lines.length; ++i) {
lines[i].parent = this;
height += lines[i].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.lines.splice(at, n);
},
+ // Helper used to collapse a small branch into a single leaf.
collapse: function(lines) {
- lines.splice.apply(lines, [lines.length, 0].concat(this.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, e = lines.length; i < e; ++i) lines[i].parent = this;
+ 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, e = children.length; i < e; ++i) {
+ for (var i = 0; i < children.length; ++i) {
var ch = children[i];
size += ch.chunkSize(); height += ch.height;
ch.parent = this;
at = 0;
} else at -= sz;
}
- if (this.size - n < 25) {
+ // 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)];
}
},
collapse: function(lines) {
- for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(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, e = this.children.length; i < e; ++i) {
+ 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);
at -= sz;
}
},
+ // When a node has grown, check whether it should be split.
maybeSpill: function() {
if (this.children.length <= 10) return;
var me = this;
me.parent.maybeSpill();
},
iterN: function(at, n, op) {
- for (var i = 0, e = this.children.length; i < e; ++i) {
+ 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);
this.first = firstLine;
this.scrollTop = this.scrollLeft = 0;
this.cantEdit = false;
- this.history = makeHistory();
this.cleanGeneration = 1;
this.frontier = firstLine;
var start = Pos(firstLine, 0);
- this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null};
+ this.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}, null, {head: start, anchor: start});
+ 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, e = lines.length; i < e; ++i) height += lines[i].height;
+ 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: function(code) {
+ 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"},
- {head: top, anchor: top}, true);
- },
+ text: splitLines(code), origin: "setValue"}, true);
+ setSelection(this, simpleSelection(top));
+ }),
replaceRange: function(code, from, to, origin) {
from = clipPos(this, from);
to = to ? clipPos(this, to) : from;
},
getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},
- setLine: function(line, text) {
- if (isLine(this, line))
- replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line)));
- },
- removeLine: function(line) {
- if (line) replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line)));
- else replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0)));
- },
getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},
getLineNumber: function(line) {return lineNo(line);},
getLineHandleVisualStart: function(line) {
if (typeof line == "number") line = getLine(this, line);
- return visualLine(this, line);
+ return visualLine(line);
},
lineCount: function() {return this.size;},
clipPos: function(pos) {return clipPos(this, pos);},
getCursor: function(start) {
- var sel = this.sel, pos;
- if (start == null || start == "head") pos = sel.head;
- else if (start == "anchor") pos = sel.anchor;
- else if (start == "end" || start === false) pos = sel.to;
- else pos = sel.from;
- return copyPos(pos);
+ 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;
},
- somethingSelected: function() {return !posEq(this.sel.head, this.sel.anchor);},
+ listSelections: function() { return this.sel.ranges; },
+ somethingSelected: function() {return this.sel.somethingSelected();},
- setCursor: docOperation(function(line, ch, extend) {
- var pos = clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line);
- if (extend) extendSelection(this, pos);
- else setSelection(this, pos, pos);
+ 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);
}),
- setSelection: docOperation(function(anchor, head, bias) {
- setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), bias);
+ extendSelections: docMethodOp(function(heads, options) {
+ extendSelections(this, clipPosArray(this, heads, options));
}),
- extendSelection: docOperation(function(from, to, bias) {
- extendSelection(this, clipPos(this, from), to && clipPos(this, to), bias);
+ 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) {return this.getRange(this.sel.from, this.sel.to, lineSep);},
+ 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) {
- makeChange(this, {from: this.sel.from, to: this.sel.to, text: splitLines(code), origin: origin}, collapse || "around");
+ var dup = [];
+ for (var i = 0; i < this.sel.ranges.length; i++)
+ dup[i] = code;
+ this.replaceSelections(dup, collapse, origin || "+input");
},
- undo: docOperation(function() {makeChangeFromHistory(this, "undo");}),
- redo: docOperation(function() {makeChangeFromHistory(this, "redo");}),
+ 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.sel.extend = val;},
+ setExtending: function(val) {this.extend = val;},
+ getExtending: function() {return this.extend;},
historySize: function() {
- var hist = this.history;
- return {undo: hist.done.length, redo: hist.undone.length};
+ 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 = makeHistory(this.history.maxGeneration);},
+ clearHistory: function() {this.history = new History(this.history.maxGeneration);},
markClean: function() {
this.cleanGeneration = this.changeGeneration(true);
undone: copyHistoryArray(this.history.undone)};
},
setHistory: function(histData) {
- var hist = this.history = makeHistory(this.history.maxGeneration);
- hist.done = histData.done.slice(0);
- hist.undone = histData.undone.slice(0);
+ 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);
},
markText: function(from, to, options) {
setBookmark: function(pos, options) {
var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
insertLeft: options && options.insertLeft,
- clearWhenEmpty: false};
+ clearWhenEmpty: false, shared: options && options.shared};
pos = clipPos(this, pos);
return markText(this, pos, pos, realOpts, "bookmark");
},
}
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) {
copy: function(copyHistory) {
var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first);
doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
- doc.sel = {from: this.sel.from, to: this.sel.to, head: this.sel.head, anchor: this.sel.anchor,
- shift: this.sel.shift, extend: false, goalColumn: this.sel.goalColumn};
+ doc.sel = this.sel;
+ doc.extend = false;
if (copyHistory) {
doc.history.undoDepth = this.history.undoDepth;
doc.setHistory(this.getHistory());
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 (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 = makeHistory();
+ other.history = new History(null);
other.history.done = copyHistoryArray(this.history.done, splitIds);
other.history.undone = copyHistoryArray(this.history.undone, splitIds);
}
getEditor: function() {return this.cm;}
});
+ // Public alias.
Doc.prototype.eachLine = Doc.prototype.iter;
- // The Doc methods that should be available on CodeMirror instances
+ // 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) {
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) {
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) computeMaxLength(cm);
+ if (!cm.options.lineWrapping) findMaxLine(cm);
cm.options.mode = doc.modeOption;
regChange(cm);
}
// LINE UTILITIES
- function getLine(chunk, n) {
- n -= chunk.first;
- while (!chunk.lines) {
+ // 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; }
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) {
});
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;
- for (var n = line; n; n = n.parent) n.height += diff;
+ 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);
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, e = chunk.children.length; i < e; ++i) {
+ 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;
}
return n;
} while (!chunk.lines);
- for (var i = 0, e = chunk.lines.length; i < e; ++i) {
+ 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;
}
- function heightAtLine(cm, lineObj) {
- lineObj = visualLine(cm.doc, lineObj);
+
+ // 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) {
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);
// HISTORY
- function makeHistory(startGen) {
- return {
- // Arrays of history events. Doing something adds an event to
- // done and clears undo. Undoing moves events from done to
- // undone, redoing moves them in the other direction.
- done: [], undone: [], undoDepth: Infinity,
- // Used to track when changes can be merged into a single undo
- // event
- lastTime: 0, lastOp: null, lastOrigin: null,
- // Used by the isClean() method
- generation: startGen || 1, maxGeneration: startGen || 1
- };
- }
-
- function attachLocalSpans(doc, change, from, to) {
- var existing = change["spans_" + doc.id], n = 0;
- doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) {
- if (line.markedSpans)
- (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans;
- ++n;
- });
- }
-
+ function 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 = 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 from = { line: change.from.line, ch: change.from.ch };
- var histChange = {from: from, to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
+ 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;
}
- function addToHistory(doc, change, selAfter, opId) {
+ // 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 = lst(hist.done);
+ var time = +new Date, cur;
- if (cur &&
- (hist.lastOp == opId ||
+ if ((hist.lastOp == opId ||
hist.lastOrigin == change.origin && change.origin &&
- ((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) ||
- change.origin.charAt(0) == "*"))) {
+ ((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 (posEq(change.from, change.to) && posEq(change.from, last.to)) {
+ 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);
// Add new sub-event
cur.changes.push(historyChangeFromChange(doc, change));
}
- cur.anchorAfter = selAfter.anchor; cur.headAfter = selAfter.head;
} else {
// Can not be merged, start a new event.
+ var before = lst(hist.done);
+ if (!before || !before.ranges)
+ pushSelectionToHistory(doc.sel, hist.done);
cur = {changes: [historyChangeFromChange(doc, change)],
- generation: hist.generation,
- anchorBefore: doc.sel.anchor, headBefore: doc.sel.head,
- anchorAfter: selAfter.anchor, headAfter: selAfter.head};
+ generation: hist.generation};
hist.done.push(cur);
- while (hist.done.length > hist.undoDepth)
+ 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.lastTime = time;
+ hist.lastModTime = hist.lastSelTime = time;
hist.lastOp = opId;
- hist.lastOrigin = change.origin;
+ 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.lastOp ||
+ (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.lastOp = 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) {
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;
// 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) {
+ function copyHistoryArray(events, newGroup, instantiateSel) {
for (var i = 0, copy = []; i < events.length; ++i) {
- var event = events[i], changes = event.changes, newChanges = [];
- copy.push({changes: newChanges, anchorBefore: event.anchorBefore, headBefore: event.headBefore,
- anchorAfter: event.anchorAfter, headAfter: event.headAfter});
+ 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});
// Rebasing/resetting history to deal with externally-sourced changes
- function rebaseHistSel(pos, from, to, diff) {
+ function rebaseHistSelSingle(pos, from, to, diff) {
if (to < pos.line) {
pos.line += diff;
} else if (from < pos.line) {
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 (!sub.copied) { cur.from = copyPos(cur.from); cur.to = copyPos(cur.to); }
if (to < cur.from.line) {
- cur.from.line += diff;
- cur.to.line += diff;
+ 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 (!sub.copied) {
- sub.anchorBefore = copyPos(sub.anchorBefore); sub.headBefore = copyPos(sub.headBefore);
- sub.anchorAfter = copyPos(sub.anchorAfter); sub.readAfter = copyPos(sub.headAfter);
- sub.copied = true;
- }
if (!ok) {
array.splice(0, i + 1);
i = 0;
- } else {
- rebaseHistSel(sub.anchorBefore); rebaseHistSel(sub.headBefore);
- rebaseHistSel(sub.anchorAfter); rebaseHistSel(sub.headAfter);
}
}
}
rebaseHistArray(hist.undone, from, to, diff);
}
- // EVENT OPERATORS
+ // EVENT UTILITIES
- function stopMethod() {e_stop(this);}
- // Ensure an event has a stop method.
- function addStop(event) {
- if (!event.stop) event.stop = stopMethod;
- return event;
- }
+ // Due to the fact that we still support jurassic IE versions, some
+ // compatibility wrappers are needed.
- function e_preventDefault(e) {
+ var e_preventDefault = CodeMirror.e_preventDefault = function(e) {
if (e.preventDefault) e.preventDefault();
else e.returnValue = false;
- }
- function e_stopPropagation(e) {
+ };
+ 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;
}
- function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
- CodeMirror.e_stop = e_stop;
- CodeMirror.e_preventDefault = e_preventDefault;
- CodeMirror.e_stopPropagation = e_stopPropagation;
+ 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) {
// EVENT HANDLING
- function on(emitter, type, f) {
+ // 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)
var arr = map[type] || (map[type] = []);
arr.push(f);
}
- }
+ };
- function off(emitter, type, f) {
+ var off = CodeMirror.off = function(emitter, type, f) {
if (emitter.removeEventListener)
emitter.removeEventListener(type, f, false);
else if (emitter.detachEvent)
for (var i = 0; i < arr.length; ++i)
if (arr[i] == f) { arr.splice(i, 1); break; }
}
- }
+ };
- function signal(emitter, type /*, values...*/) {
+ 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);
- }
+ };
+ // 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.
var delayedCallbacks, delayedCallbackDepth = 0;
function signalLater(emitter, type /*, values...*/) {
var arr = emitter._handlers && emitter._handlers[type];
delayedCallbacks.push(bnd(arr[i]));
}
- function signalDOMEvent(cm, e, override) {
- signal(cm, override || e.type, cm, e);
- return e_defaultPrevented(e) || e.codemirrorIgnore;
- }
-
function fireDelayed() {
--delayedCallbackDepth;
var delayed = delayedCallbacks;
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) {
+ 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;
}
- CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal;
-
+ // 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);};
// 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);}};
+ Delayed.prototype.set = function(ms, f) {
+ clearTimeout(this.id);
+ this.id = setTimeout(f, ms);
+ };
// Counts the column offset in a string, taking tabs into account.
// Used mostly to find indentation.
- function countColumn(string, end, tabSize, startIndex, startValue) {
+ 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; i < end; ++i) {
- if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
- else ++n;
+ 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;
}
- return n;
}
- CodeMirror.countColumn = countColumn;
var spaceStrs = [""];
function spaceStr(n) {
function lst(arr) { return arr[arr.length-1]; }
- function selectInput(node) {
- if (ios) { // Mobile Safari apparently has a bug where select() is broken.
- node.selectionStart = 0;
- node.selectionEnd = node.value.length;
- } else {
- // Suppress mysterious IE10 errors
- try { node.select(); }
- catch(_e) {}
- }
- }
+ 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(collection, elt) {
- if (collection.indexOf) return collection.indexOf(elt);
- for (var i = 0, e = collection.length; i < e; ++i)
- if (collection[i] == elt) return i;
+ function indexOf(array, elt) {
+ for (var i = 0; i < array.length; ++i)
+ if (array[i] == elt) return i;
return -1;
}
+ if ([].indexOf) indexOf = function(array, elt) { return array.indexOf(elt); };
+ function map(array, f) {
+ var out = [];
+ for (var i = 0; i < array.length; i++) out[i] = f(array[i], i);
+ return out;
+ }
+ if ([].map) map = function(array, f) { return array.map(f); };
function createObj(base, props) {
- function Obj() {}
- Obj.prototype = base;
- var inst = new Obj();
+ 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) {
+ function copyObj(obj, target, overwrite) {
if (!target) target = {};
- for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop];
+ for (var prop in obj)
+ if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))
+ target[prop] = obj[prop];
return target;
}
- function emptyArray(size) {
- for (var a = [], i = 0; i < size; ++i) a.push(undefined);
- return a;
- }
-
function bind(f) {
var args = Array.prototype.slice.call(arguments, 1);
return function(){return f.apply(null, args);};
}
- var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
- function isWordChar(ch) {
+ var nonASCIISingleCaseWordChar = /[\u00df\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
+ var isWordChar = CodeMirror.isWordChar = function(ch) {
return /\w/.test(ch) || ch > "\x80" &&
(ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
- }
+ };
function isEmpty(obj) {
for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
return true;
}
+ // 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); }
var e = document.createElement(tag);
if (className) e.className = className;
if (style) e.style.cssText = style;
- if (typeof content == "string") setTextContent(e, content);
+ 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();
+ r.moveToElementText(node.parentNode);
+ 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 removeChildren(parent).appendChild(e);
}
- function setTextContent(e, str) {
- if (ie_lt9) {
- e.innerHTML = "";
- e.appendChild(document.createTextNode(str));
- } else e.textContent = str;
+ function contains(parent, child) {
+ if (parent.contains)
+ return parent.contains(child);
+ while (child = child.parentNode)
+ if (child == parent) return true;
}
- function getRect(node) {
- return node.getBoundingClientRect();
+ 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_upto10) activeElt = function() {
+ try { return document.activeElement; }
+ catch(e) { return document.body; }
+ };
+
+ function classTest(cls) { return new RegExp("\\b" + cls + "\\b\\s*"); }
+ function rmClass(node, cls) {
+ var test = classTest(cls);
+ if (test.test(node.className)) node.className = node.className.replace(test, "");
+ }
+ function addClass(node, cls) {
+ if (!classTest(cls).test(node.className)) node.className += " " + 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;
}
- CodeMirror.replaceGetRect = function(f) { getRect = f; };
// FEATURE DETECTION
var dragAndDrop = function() {
// There is *some* kind of drag-and-drop support in IE6-8, but I
// couldn't get it to work yet.
- if (ie_lt9) return false;
+ if (ie_upto8) return false;
var div = elt('div');
return "draggable" in div || "dragDrop" in div;
}();
- // For a reason I have yet to figure out, some browsers disallow
- // word wrapping between certain characters *only* if a new inline
- // element is started between them. This makes it hard to reliably
- // measure the position of things, since that requires inserting an
- // extra span. This terribly fragile set of tests matches the
- // character combinations that suffer from this phenomenon on the
- // various browsers.
- function spanAffectsWrapping() { return false; }
- if (gecko) // Only for "$'"
- spanAffectsWrapping = function(str, i) {
- return str.charCodeAt(i - 1) == 36 && str.charCodeAt(i) == 39;
- };
- else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent))
- spanAffectsWrapping = function(str, i) {
- return /\-[^ \-?]|\?[^ !\'\"\),.\-\/:;\?\]\}]/.test(str.slice(i - 1, i + 1));
- };
- else if (webkit && /Chrome\/(?:29|[3-9]\d|\d\d\d)\./.test(navigator.userAgent))
- spanAffectsWrapping = function(str, i) {
- var code = str.charCodeAt(i - 1);
- return code >= 8208 && code <= 8212;
- };
- else if (webkit)
- spanAffectsWrapping = function(str, i) {
- if (i > 1 && str.charCodeAt(i - 1) == 45) {
- if (/\w/.test(str.charAt(i - 2)) && /[^\-?\.]/.test(str.charAt(i))) return true;
- if (i > 2 && /[\d\.,]/.test(str.charAt(i - 2)) && /[\d\.,]/.test(str.charAt(i))) return false;
- }
- return /[~!#%&*)=+}\]\\|\"\.>,:;][({[<]|-[^\-?\.\u2010-\u201f\u2026]|\?[\w~`@#$%\^&*(_=+{[|><]|\u2026[\w~`@#$%\^&*(_=+{[><]/.test(str.slice(i - 1, i + 1));
- };
-
var knownScrollbarWidth;
function scrollbarWidth(measure) {
if (knownScrollbarWidth != null) return knownScrollbarWidth;
var test = elt("span", "\u200b");
removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
if (measure.firstChild.offsetHeight != 0)
- zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8;
+ zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_upto7;
}
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.left == r0.right) return false;
+ 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 = "\n\nb".split(/\n/).length != 3 ? function(string) {
+ 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);
}
return result;
} : function(string){return string.split(/\r\n?|\n/);};
- CodeMirror.splitLines = splitLines;
var hasSelection = window.getSelection ? function(te) {
try { return te.selectionStart != te.selectionEnd; }
var e = elt("div");
if ("oncopy" in e) return true;
e.setAttribute("oncopy", "return;");
- return typeof e.oncopy == 'function';
+ return typeof e.oncopy == "function";
})();
- // KEY NAMING
+ // 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",
function lineStart(cm, lineN) {
var line = getLine(cm.doc, lineN);
- var visual = visualLine(cm.doc, line);
+ 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;
- while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN)))
- lineN = merged.find().to.line;
+ 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, ch);
+ return Pos(lineN == null ? lineNo(line) : lineN, ch);
}
function compareBidiLevel(order, a, b) {
return pos;
}
- // This is somewhat involved. It is needed in order to move
- // 'visually' through bi-directional text -- i.e., pressing left
- // should make the cursor go left, even when in RTL text. The
- // tricky part is the 'jumps', where RTL and LTR text touch each
- // other. This often requires the cursor offset to move more than
- // one unit, in order to visually move one unit.
+ // 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);
// objects) in the order in which they occur visually.
var bidiOrdering = (function() {
// Character types for codepoints 0 to 0xff
- var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL";
+ var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
// Character types for codepoints 0x600 to 0x6ff
- var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr";
+ var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm";
function charType(code) {
- if (code <= 0xff) return lowTypes.charAt(code);
+ if (code <= 0xf7) return lowTypes.charAt(code);
else if (0x590 <= code && code <= 0x5f4) return "R";
- else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600);
- else if (0x700 <= code && code <= 0x8ac) return "r";
+ else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600);
+ else if (0x6ee <= code && code <= 0x8ac) return "r";
+ else if (0x2000 <= code && code <= 0x200b) return "w";
+ else if (code == 0x200c) return "b";
else return "L";
}
// Browsers seem to always treat the boundaries of block elements as being L.
var outerType = "L";
+ function BidiSpan(level, from, to) {
+ this.level = level;
+ this.from = from; this.to = to;
+ }
+
return function(str) {
if (!bidiRE.test(str)) return false;
var len = str.length, types = [];
if (countsAsLeft.test(types[i])) {
var start = i;
for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
- order.push({from: start, to: i, level: 0});
+ order.push(new BidiSpan(0, start, i));
} else {
var pos = i, at = order.length;
for (++i; i < len && types[i] != "L"; ++i) {}
for (var j = pos; j < i;) {
if (countsAsNum.test(types[j])) {
- if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1});
+ if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j));
var nstart = j;
for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
- order.splice(at, 0, {from: nstart, to: j, level: 2});
+ order.splice(at, 0, new BidiSpan(2, nstart, j));
pos = j;
} else ++j;
}
- if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1});
+ if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i));
}
}
if (order[0].level == 1 && (m = str.match(/^\s+/))) {
order[0].from = m[0].length;
- order.unshift({from: 0, to: m[0].length, level: 0});
+ order.unshift(new BidiSpan(0, 0, m[0].length));
}
if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
lst(order).to -= m[0].length;
- order.push({from: len - m[0].length, to: len, level: 0});
+ order.push(new BidiSpan(0, len - m[0].length, len));
}
if (order[0].level != lst(order).level)
- order.push({from: len, to: len, level: order[0].level});
+ order.push(new BidiSpan(order[0].level, len, len));
return order;
};
// THE END
- CodeMirror.version = "3.21.1";
+ CodeMirror.version = "4.1.1";
return CodeMirror;
-})();
+});
projects / platform / framework / web / crosswalk.git / blobdiff