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File: FrontEndScripts/libs/codemirror/addon/merge/merge.js

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File: FrontEndScripts/libs/codemirror/addon/merge/merge.js
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// CodeMirror, copyright (c) by Marijn Haverbeke and others // Distributed under an MIT license: http://codemirror.net/LICENSE // declare global: diff_match_patch, DIFF_INSERT, DIFF_DELETE, DIFF_EQUAL (function(mod) { if (typeof exports == "object" && typeof module == "object") // CommonJS mod(require("../../lib/codemirror")); // Note non-packaged dependency diff_match_patch else if (typeof define == "function" && define.amd) // AMD define(["../../lib/codemirror", "diff_match_patch"], mod); else // Plain browser env mod(CodeMirror); })(function(CodeMirror) { "use strict"; var Pos = CodeMirror.Pos; var svgNS = "http://www.w3.org/2000/svg"; function DiffView(mv, type) { this.mv = mv; this.type = type; this.classes = type == "left" ? {chunk: "CodeMirror-merge-l-chunk", start: "CodeMirror-merge-l-chunk-start", end: "CodeMirror-merge-l-chunk-end", insert: "CodeMirror-merge-l-inserted", del: "CodeMirror-merge-l-deleted", connect: "CodeMirror-merge-l-connect"} : {chunk: "CodeMirror-merge-r-chunk", start: "CodeMirror-merge-r-chunk-start", end: "CodeMirror-merge-r-chunk-end", insert: "CodeMirror-merge-r-inserted", del: "CodeMirror-merge-r-deleted", connect: "CodeMirror-merge-r-connect"}; } DiffView.prototype = { constructor: DiffView, init: function(pane, orig, options) { this.edit = this.mv.edit; (this.edit.state.diffViews || (this.edit.state.diffViews = [])).push(this); this.orig = CodeMirror(pane, copyObj({value: orig, readOnly: !this.mv.options.allowEditingOriginals}, copyObj(options))); this.orig.state.diffViews = [this]; this.diff = getDiff(asString(orig), asString(options.value)); this.chunks = getChunks(this.diff); this.diffOutOfDate = this.dealigned = false; this.showDifferences = options.showDifferences !== false; this.forceUpdate = registerUpdate(this); setScrollLock(this, true, false); registerScroll(this); }, setShowDifferences: function(val) { val = val !== false; if (val != this.showDifferences) { this.showDifferences = val; this.forceUpdate("full"); } } }; function ensureDiff(dv) { if (dv.diffOutOfDate) { dv.diff = getDiff(dv.orig.getValue(), dv.edit.getValue()); dv.chunks = getChunks(dv.diff); dv.diffOutOfDate = false; CodeMirror.signal(dv.edit, "updateDiff", dv.diff); } } var updating = false; function registerUpdate(dv) { var edit = {from: 0, to: 0, marked: []}; var orig = {from: 0, to: 0, marked: []}; var debounceChange, updatingFast = false; function update(mode) { updating = true; updatingFast = false; if (mode == "full") { if (dv.svg) clear(dv.svg); if (dv.copyButtons) clear(dv.copyButtons); clearMarks(dv.edit, edit.marked, dv.classes); clearMarks(dv.orig, orig.marked, dv.classes); edit.from = edit.to = orig.from = orig.to = 0; } ensureDiff(dv); if (dv.showDifferences) { updateMarks(dv.edit, dv.diff, edit, DIFF_INSERT, dv.classes); updateMarks(dv.orig, dv.diff, orig, DIFF_DELETE, dv.classes); } makeConnections(dv); if (dv.mv.options.connect == "align") alignChunks(dv); updating = false; } function setDealign(fast) { if (updating) return; dv.dealigned = true; set(fast); } function set(fast) { if (updating || updatingFast) return; clearTimeout(debounceChange); if (fast === true) updatingFast = true; debounceChange = setTimeout(update, fast === true ? 20 : 250); } function change(_cm, change) { if (!dv.diffOutOfDate) { dv.diffOutOfDate = true; edit.from = edit.to = orig.from = orig.to = 0; } // Update faster when a line was added/removed setDealign(change.text.length - 1 != change.to.line - change.from.line); } dv.edit.on("change", change); dv.orig.on("change", change); dv.edit.on("markerAdded", setDealign); dv.edit.on("markerCleared", setDealign); dv.orig.on("markerAdded", setDealign); dv.orig.on("markerCleared", setDealign); dv.edit.on("viewportChange", function() { set(false); }); dv.orig.on("viewportChange", function() { set(false); }); update(); return update; } function registerScroll(dv) { dv.edit.on("scroll", function() { syncScroll(dv, DIFF_INSERT) && makeConnections(dv); }); dv.orig.on("scroll", function() { syncScroll(dv, DIFF_DELETE) && makeConnections(dv); }); } function syncScroll(dv, type) { // Change handler will do a refresh after a timeout when diff is out of date if (dv.diffOutOfDate) return false; if (!dv.lockScroll) return true; var editor, other, now = +new Date; if (type == DIFF_INSERT) { editor = dv.edit; other = dv.orig; } else { editor = dv.orig; other = dv.edit; } // Don't take action if the position of this editor was recently set // (to prevent feedback loops) if (editor.state.scrollSetBy == dv && (editor.state.scrollSetAt || 0) + 50 > now) return false; var sInfo = editor.getScrollInfo(); if (dv.mv.options.connect == "align") { targetPos = sInfo.top; } else { var halfScreen = .5 * sInfo.clientHeight, midY = sInfo.top + halfScreen; var mid = editor.lineAtHeight(midY, "local"); var around = chunkBoundariesAround(dv.chunks, mid, type == DIFF_INSERT); var off = getOffsets(editor, type == DIFF_INSERT ? around.edit : around.orig); var offOther = getOffsets(other, type == DIFF_INSERT ? around.orig : around.edit); var ratio = (midY - off.top) / (off.bot - off.top); var targetPos = (offOther.top - halfScreen) + ratio * (offOther.bot - offOther.top); var botDist, mix; // Some careful tweaking to make sure no space is left out of view // when scrolling to top or bottom. if (targetPos > sInfo.top && (mix = sInfo.top / halfScreen) < 1) { targetPos = targetPos * mix + sInfo.top * (1 - mix); } else if ((botDist = sInfo.height - sInfo.clientHeight - sInfo.top) < halfScreen) { var otherInfo = other.getScrollInfo(); var botDistOther = otherInfo.height - otherInfo.clientHeight - targetPos; if (botDistOther > botDist && (mix = botDist / halfScreen) < 1) targetPos = targetPos * mix + (otherInfo.height - otherInfo.clientHeight - botDist) * (1 - mix); } } other.scrollTo(sInfo.left, targetPos); other.state.scrollSetAt = now; other.state.scrollSetBy = dv; return true; } function getOffsets(editor, around) { var bot = around.after; if (bot == null) bot = editor.lastLine() + 1; return {top: editor.heightAtLine(around.before || 0, "local"), bot: editor.heightAtLine(bot, "local")}; } function setScrollLock(dv, val, action) { dv.lockScroll = val; if (val && action != false) syncScroll(dv, DIFF_INSERT) && makeConnections(dv); dv.lockButton.innerHTML = val ? "\u21db\u21da" : "\u21db&nbsp;&nbsp;\u21da"; } // Updating the marks for editor content function clearMarks(editor, arr, classes) { for (var i = 0; i < arr.length; ++i) { var mark = arr[i]; if (mark instanceof CodeMirror.TextMarker) { mark.clear(); } else if (mark.parent) { editor.removeLineClass(mark, "background", classes.chunk); editor.removeLineClass(mark, "background", classes.start); editor.removeLineClass(mark, "background", classes.end); } } arr.length = 0; } // FIXME maybe add a margin around viewport to prevent too many updates function updateMarks(editor, diff, state, type, classes) { var vp = editor.getViewport(); editor.operation(function() { if (state.from == state.to || vp.from - state.to > 20 || state.from - vp.to > 20) { clearMarks(editor, state.marked, classes); markChanges(editor, diff, type, state.marked, vp.from, vp.to, classes); state.from = vp.from; state.to = vp.to; } else { if (vp.from < state.from) { markChanges(editor, diff, type, state.marked, vp.from, state.from, classes); state.from = vp.from; } if (vp.to > state.to) { markChanges(editor, diff, type, state.marked, state.to, vp.to, classes); state.to = vp.to; } } }); } function markChanges(editor, diff, type, marks, from, to, classes) { var pos = Pos(0, 0); var top = Pos(from, 0), bot = editor.clipPos(Pos(to - 1)); var cls = type == DIFF_DELETE ? classes.del : classes.insert; function markChunk(start, end) { var bfrom = Math.max(from, start), bto = Math.min(to, end); for (var i = bfrom; i < bto; ++i) { var line = editor.addLineClass(i, "background", classes.chunk); if (i == start) editor.addLineClass(line, "background", classes.start); if (i == end - 1) editor.addLineClass(line, "background", classes.end); marks.push(line); } // When the chunk is empty, make sure a horizontal line shows up if (start == end && bfrom == end && bto == end) { if (bfrom) marks.push(editor.addLineClass(bfrom - 1, "background", classes.end)); else marks.push(editor.addLineClass(bfrom, "background", classes.start)); } } var chunkStart = 0; for (var i = 0; i < diff.length; ++i) { var part = diff[i], tp = part[0], str = part[1]; if (tp == DIFF_EQUAL) { var cleanFrom = pos.line + (startOfLineClean(diff, i) ? 0 : 1); moveOver(pos, str); var cleanTo = pos.line + (endOfLineClean(diff, i) ? 1 : 0); if (cleanTo > cleanFrom) { if (i) markChunk(chunkStart, cleanFrom); chunkStart = cleanTo; } } else { if (tp == type) { var end = moveOver(pos, str, true); var a = posMax(top, pos), b = posMin(bot, end); if (!posEq(a, b)) marks.push(editor.markText(a, b, {className: cls})); pos = end; } } } if (chunkStart <= pos.line) markChunk(chunkStart, pos.line + 1); } // Updating the gap between editor and original function makeConnections(dv) { if (!dv.showDifferences) return; if (dv.svg) { clear(dv.svg); var w = dv.gap.offsetWidth; attrs(dv.svg, "width", w, "height", dv.gap.offsetHeight); } if (dv.copyButtons) clear(dv.copyButtons); var vpEdit = dv.edit.getViewport(), vpOrig = dv.orig.getViewport(); var sTopEdit = dv.edit.getScrollInfo().top, sTopOrig = dv.orig.getScrollInfo().top; for (var i = 0; i < dv.chunks.length; i++) { var ch = dv.chunks[i]; if (ch.editFrom <= vpEdit.to && ch.editTo >= vpEdit.from && ch.origFrom <= vpOrig.to && ch.origTo >= vpOrig.from) drawConnectorsForChunk(dv, ch, sTopOrig, sTopEdit, w); } } function getMatchingOrigLine(editLine, chunks) { var editStart = 0, origStart = 0; for (var i = 0; i < chunks.length; i++) { var chunk = chunks[i]; if (chunk.editTo > editLine && chunk.editFrom <= editLine) return null; if (chunk.editFrom > editLine) break; editStart = chunk.editTo; origStart = chunk.origTo; } return origStart + (editLine - editStart); } function findAlignedLines(dv, other) { var linesToAlign = []; for (var i = 0; i < dv.chunks.length; i++) { var chunk = dv.chunks[i]; linesToAlign.push([chunk.origTo, chunk.editTo, other ? getMatchingOrigLine(chunk.editTo, other.chunks) : null]); } if (other) { for (var i = 0; i < other.chunks.length; i++) { var chunk = other.chunks[i]; for (var j = 0; j < linesToAlign.length; j++) { var align = linesToAlign[j]; if (align[1] == chunk.editTo) { j = -1; break; } else if (align[1] > chunk.editTo) { break; } } if (j > -1) linesToAlign.splice(j - 1, 0, [getMatchingOrigLine(chunk.editTo, dv.chunks), chunk.editTo, chunk.origTo]); } } return linesToAlign; } function alignChunks(dv, force) { if (!dv.dealigned && !force) return; if (!dv.orig.curOp) return dv.orig.operation(function() { alignChunks(dv, force); }); dv.dealigned = false; var other = dv.mv.left == dv ? dv.mv.right : dv.mv.left; if (other) { ensureDiff(other); other.dealigned = false; } var linesToAlign = findAlignedLines(dv, other); // Clear old aligners var aligners = dv.mv.aligners; for (var i = 0; i < aligners.length; i++) aligners[i].clear(); aligners.length = 0; var cm = [dv.orig, dv.edit], scroll = []; if (other) cm.push(other.orig); for (var i = 0; i < cm.length; i++) scroll.push(cm[i].getScrollInfo().top); for (var ln = 0; ln < linesToAlign.length; ln++) alignLines(cm, linesToAlign[ln], aligners); for (var i = 0; i < cm.length; i++) cm[i].scrollTo(null, scroll[i]); } function alignLines(cm, lines, aligners) { var maxOffset = 0, offset = []; for (var i = 0; i < cm.length; i++) if (lines[i] != null) { var off = cm[i].heightAtLine(lines[i], "local"); offset[i] = off; maxOffset = Math.max(maxOffset, off); } for (var i = 0; i < cm.length; i++) if (lines[i] != null) { var diff = maxOffset - offset[i]; if (diff > 1) aligners.push(padAbove(cm[i], lines[i], diff)); } } function padAbove(cm, line, size) { var above = true; if (line > cm.lastLine()) { line--; above = false; } var elt = document.createElement("div"); elt.className = "CodeMirror-merge-spacer"; elt.style.height = size + "px"; elt.style.minWidth = "1px"; return cm.addLineWidget(line, elt, {height: size, above: above}); } function drawConnectorsForChunk(dv, chunk, sTopOrig, sTopEdit, w) { var flip = dv.type == "left"; var top = dv.orig.heightAtLine(chunk.origFrom, "local") - sTopOrig; if (dv.svg) { var topLpx = top; var topRpx = dv.edit.heightAtLine(chunk.editFrom, "local") - sTopEdit; if (flip) { var tmp = topLpx; topLpx = topRpx; topRpx = tmp; } var botLpx = dv.orig.heightAtLine(chunk.origTo, "local") - sTopOrig; var botRpx = dv.edit.heightAtLine(chunk.editTo, "local") - sTopEdit; if (flip) { var tmp = botLpx; botLpx = botRpx; botRpx = tmp; } var curveTop = " C " + w/2 + " " + topRpx + " " + w/2 + " " + topLpx + " " + (w + 2) + " " + topLpx; var curveBot = " C " + w/2 + " " + botLpx + " " + w/2 + " " + botRpx + " -1 " + botRpx; attrs(dv.svg.appendChild(document.createElementNS(svgNS, "path")), "d", "M -1 " + topRpx + curveTop + " L " + (w + 2) + " " + botLpx + curveBot + " z", "class", dv.classes.connect); } if (dv.copyButtons) { var copy = dv.copyButtons.appendChild(elt("div", dv.type == "left" ? "\u21dd" : "\u21dc", "CodeMirror-merge-copy")); var editOriginals = dv.mv.options.allowEditingOriginals; copy.title = editOriginals ? "Push to left" : "Revert chunk"; copy.chunk = chunk; copy.style.top = top + "px"; if (editOriginals) { var topReverse = dv.orig.heightAtLine(chunk.editFrom, "local") - sTopEdit; var copyReverse = dv.copyButtons.appendChild(elt("div", dv.type == "right" ? "\u21dd" : "\u21dc", "CodeMirror-merge-copy-reverse")); copyReverse.title = "Push to right"; copyReverse.chunk = {editFrom: chunk.origFrom, editTo: chunk.origTo, origFrom: chunk.editFrom, origTo: chunk.editTo}; copyReverse.style.top = topReverse + "px"; dv.type == "right" ? copyReverse.style.left = "2px" : copyReverse.style.right = "2px"; } } } function copyChunk(dv, to, from, chunk) { if (dv.diffOutOfDate) return; to.replaceRange(from.getRange(Pos(chunk.origFrom, 0), Pos(chunk.origTo, 0)), Pos(chunk.editFrom, 0), Pos(chunk.editTo, 0)); } // Merge view, containing 0, 1, or 2 diff views. var MergeView = CodeMirror.MergeView = function(node, options) { if (!(this instanceof MergeView)) return new MergeView(node, options); this.options = options; var origLeft = options.origLeft, origRight = options.origRight == null ? options.orig : options.origRight; var hasLeft = origLeft != null, hasRight = origRight != null; var panes = 1 + (hasLeft ? 1 : 0) + (hasRight ? 1 : 0); var wrap = [], left = this.left = null, right = this.right = null; var self = this; if (hasLeft) { left = this.left = new DiffView(this, "left"); var leftPane = elt("div", null, "CodeMirror-merge-pane"); wrap.push(leftPane); wrap.push(buildGap(left)); } var editPane = elt("div", null, "CodeMirror-merge-pane"); wrap.push(editPane); if (hasRight) { right = this.right = new DiffView(this, "right"); wrap.push(buildGap(right)); var rightPane = elt("div", null, "CodeMirror-merge-pane"); wrap.push(rightPane); } (hasRight ? rightPane : editPane).className += " CodeMirror-merge-pane-rightmost"; wrap.push(elt("div", null, null, "height: 0; clear: both;")); var wrapElt = this.wrap = node.appendChild(elt("div", wrap, "CodeMirror-merge CodeMirror-merge-" + panes + "pane")); this.edit = CodeMirror(editPane, copyObj(options)); if (left) left.init(leftPane, origLeft, options); if (right) right.init(rightPane, origRight, options); if (options.collapseIdentical) this.editor().operation(function() { collapseIdenticalStretches(self, options.collapseIdentical); }); if (options.connect == "align") { this.aligners = []; alignChunks(this.left || this.right, true); } var onResize = function() { if (left) makeConnections(left); if (right) makeConnections(right); }; CodeMirror.on(window, "resize", onResize); var resizeInterval = setInterval(function() { for (var p = wrapElt.parentNode; p && p != document.body; p = p.parentNode) {} if (!p) { clearInterval(resizeInterval); CodeMirror.off(window, "resize", onResize); } }, 5000); }; function buildGap(dv) { var lock = dv.lockButton = elt("div", null, "CodeMirror-merge-scrolllock"); lock.title = "Toggle locked scrolling"; var lockWrap = elt("div", [lock], "CodeMirror-merge-scrolllock-wrap"); CodeMirror.on(lock, "click", function() { setScrollLock(dv, !dv.lockScroll); }); var gapElts = [lockWrap]; if (dv.mv.options.revertButtons !== false) { dv.copyButtons = elt("div", null, "CodeMirror-merge-copybuttons-" + dv.type); CodeMirror.on(dv.copyButtons, "click", function(e) { var node = e.target || e.srcElement; if (!node.chunk) return; if (node.className == "CodeMirror-merge-copy-reverse") { copyChunk(dv, dv.orig, dv.edit, node.chunk); return; } copyChunk(dv, dv.edit, dv.orig, node.chunk); }); gapElts.unshift(dv.copyButtons); } if (dv.mv.options.connect != "align") { var svg = document.createElementNS && document.createElementNS(svgNS, "svg"); if (svg && !svg.createSVGRect) svg = null; dv.svg = svg; if (svg) gapElts.push(svg); } return dv.gap = elt("div", gapElts, "CodeMirror-merge-gap"); } MergeView.prototype = { constuctor: MergeView, editor: function() { return this.edit; }, rightOriginal: function() { return this.right && this.right.orig; }, leftOriginal: function() { return this.left && this.left.orig; }, setShowDifferences: function(val) { if (this.right) this.right.setShowDifferences(val); if (this.left) this.left.setShowDifferences(val); }, rightChunks: function() { if (this.right) { ensureDiff(this.right); return this.right.chunks; } }, leftChunks: function() { if (this.left) { ensureDiff(this.left); return this.left.chunks; } } }; function asString(obj) { if (typeof obj == "string") return obj; else return obj.getValue(); } // Operations on diffs var dmp = new diff_match_patch(); function getDiff(a, b) { var diff = dmp.diff_main(a, b); dmp.diff_cleanupSemantic(diff); // The library sometimes leaves in empty parts, which confuse the algorithm for (var i = 0; i < diff.length; ++i) { var part = diff[i]; if (!part[1]) { diff.splice(i--, 1); } else if (i && diff[i - 1][0] == part[0]) { diff.splice(i--, 1); diff[i][1] += part[1]; } } return diff; } function getChunks(diff) { var chunks = []; var startEdit = 0, startOrig = 0; var edit = Pos(0, 0), orig = Pos(0, 0); for (var i = 0; i < diff.length; ++i) { var part = diff[i], tp = part[0]; if (tp == DIFF_EQUAL) { var startOff = startOfLineClean(diff, i) ? 0 : 1; var cleanFromEdit = edit.line + startOff, cleanFromOrig = orig.line + startOff; moveOver(edit, part[1], null, orig); var endOff = endOfLineClean(diff, i) ? 1 : 0; var cleanToEdit = edit.line + endOff, cleanToOrig = orig.line + endOff; if (cleanToEdit > cleanFromEdit) { if (i) chunks.push({origFrom: startOrig, origTo: cleanFromOrig, editFrom: startEdit, editTo: cleanFromEdit}); startEdit = cleanToEdit; startOrig = cleanToOrig; } } else { moveOver(tp == DIFF_INSERT ? edit : orig, part[1]); } } if (startEdit <= edit.line || startOrig <= orig.line) chunks.push({origFrom: startOrig, origTo: orig.line + 1, editFrom: startEdit, editTo: edit.line + 1}); return chunks; } function endOfLineClean(diff, i) { if (i == diff.length - 1) return true; var next = diff[i + 1][1]; if (next.length == 1 || next.charCodeAt(0) != 10) return false; if (i == diff.length - 2) return true; next = diff[i + 2][1]; return next.length > 1 && next.charCodeAt(0) == 10; } function startOfLineClean(diff, i) { if (i == 0) return true; var last = diff[i - 1][1]; if (last.charCodeAt(last.length - 1) != 10) return false; if (i == 1) return true; last = diff[i - 2][1]; return last.charCodeAt(last.length - 1) == 10; } function chunkBoundariesAround(chunks, n, nInEdit) { var beforeE, afterE, beforeO, afterO; for (var i = 0; i < chunks.length; i++) { var chunk = chunks[i]; var fromLocal = nInEdit ? chunk.editFrom : chunk.origFrom; var toLocal = nInEdit ? chunk.editTo : chunk.origTo; if (afterE == null) { if (fromLocal > n) { afterE = chunk.editFrom; afterO = chunk.origFrom; } else if (toLocal > n) { afterE = chunk.editTo; afterO = chunk.origTo; } } if (toLocal <= n) { beforeE = chunk.editTo; beforeO = chunk.origTo; } else if (fromLocal <= n) { beforeE = chunk.editFrom; beforeO = chunk.origFrom; } } return {edit: {before: beforeE, after: afterE}, orig: {before: beforeO, after: afterO}}; } function collapseSingle(cm, from, to) { cm.addLineClass(from, "wrap", "CodeMirror-merge-collapsed-line"); var widget = document.createElement("span"); widget.className = "CodeMirror-merge-collapsed-widget"; widget.title = "Identical text collapsed. Click to expand."; var mark = cm.markText(Pos(from, 0), Pos(to - 1), { inclusiveLeft: true, inclusiveRight: true, replacedWith: widget, clearOnEnter: true }); function clear() { mark.clear(); cm.removeLineClass(from, "wrap", "CodeMirror-merge-collapsed-line"); } CodeMirror.on(widget, "click", clear); return {mark: mark, clear: clear}; } function collapseStretch(size, editors) { var marks = []; function clear() { for (var i = 0; i < marks.length; i++) marks[i].clear(); } for (var i = 0; i < editors.length; i++) { var editor = editors[i]; var mark = collapseSingle(editor.cm, editor.line, editor.line + size); marks.push(mark); mark.mark.on("clear", clear); } return marks[0].mark; } function unclearNearChunks(dv, margin, off, clear) { for (var i = 0; i < dv.chunks.length; i++) { var chunk = dv.chunks[i]; for (var l = chunk.editFrom - margin; l < chunk.editTo + margin; l++) { var pos = l + off; if (pos >= 0 && pos < clear.length) clear[pos] = false; } } } function collapseIdenticalStretches(mv, margin) { if (typeof margin != "number") margin = 2; var clear = [], edit = mv.editor(), off = edit.firstLine(); for (var l = off, e = edit.lastLine(); l <= e; l++) clear.push(true); if (mv.left) unclearNearChunks(mv.left, margin, off, clear); if (mv.right) unclearNearChunks(mv.right, margin, off, clear); for (var i = 0; i < clear.length; i++) { if (clear[i]) { var line = i + off; for (var size = 1; i < clear.length - 1 && clear[i + 1]; i++, size++) {} if (size > margin) { var editors = [{line: line, cm: edit}]; if (mv.left) editors.push({line: getMatchingOrigLine(line, mv.left.chunks), cm: mv.left.orig}); if (mv.right) editors.push({line: getMatchingOrigLine(line, mv.right.chunks), cm: mv.right.orig}); var mark = collapseStretch(size, editors); if (mv.options.onCollapse) mv.options.onCollapse(mv, line, size, mark); } } } } // General utilities function elt(tag, content, className, style) { var e = document.createElement(tag); if (className) e.className = className; if (style) e.style.cssText = style; if (typeof content == "string") e.appendChild(document.createTextNode(content)); else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]); return e; } function clear(node) { for (var count = node.childNodes.length; count > 0; --count) node.removeChild(node.firstChild); } function attrs(elt) { for (var i = 1; i < arguments.length; i += 2) elt.setAttribute(arguments[i], arguments[i+1]); } function copyObj(obj, target) { if (!target) target = {}; for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop]; return target; } function moveOver(pos, str, copy, other) { var out = copy ? Pos(pos.line, pos.ch) : pos, at = 0; for (;;) { var nl = str.indexOf("\n", at); if (nl == -1) break; ++out.line; if (other) ++other.line; at = nl + 1; } out.ch = (at ? 0 : out.ch) + (str.length - at); if (other) other.ch = (at ? 0 : other.ch) + (str.length - at); return out; } function posMin(a, b) { return (a.line - b.line || a.ch - b.ch) < 0 ? a : b; } function posMax(a, b) { return (a.line - b.line || a.ch - b.ch) > 0 ? a : b; } function posEq(a, b) { return a.line == b.line && a.ch == b.ch; } function findPrevDiff(chunks, start, isOrig) { for (var i = chunks.length - 1; i >= 0; i--) { var chunk = chunks[i]; var to = (isOrig ? chunk.origTo : chunk.editTo) - 1; if (to < start) return to; } } function findNextDiff(chunks, start, isOrig) { for (var i = 0; i < chunks.length; i++) { var chunk = chunks[i]; var from = (isOrig ? chunk.origFrom : chunk.editFrom); if (from > start) return from; } } function goNearbyDiff(cm, dir) { var found = null, views = cm.state.diffViews, line = cm.getCursor().line; if (views) for (var i = 0; i < views.length; i++) { var dv = views[i], isOrig = cm == dv.orig; ensureDiff(dv); var pos = dir < 0 ? findPrevDiff(dv.chunks, line, isOrig) : findNextDiff(dv.chunks, line, isOrig); if (pos != null && (found == null || (dir < 0 ? pos > found : pos < found))) found = pos; } if (found != null) cm.setCursor(found, 0); else return CodeMirror.Pass; } CodeMirror.commands.goNextDiff = function(cm) { return goNearbyDiff(cm, 1); }; CodeMirror.commands.goPrevDiff = function(cm) { return goNearbyDiff(cm, -1); }; });