1003 lines
37 KiB
JavaScript
1003 lines
37 KiB
JavaScript
// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: https://codemirror.net/LICENSE
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// declare global: diff_match_patch, DIFF_INSERT, DIFF_DELETE, DIFF_EQUAL
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(function(mod) {
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if (typeof exports == "object" && typeof module == "object") // CommonJS
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mod(require("../../lib/codemirror")); // Note non-packaged dependency diff_match_patch
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else if (typeof define == "function" && define.amd) // AMD
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define(["../../lib/codemirror", "diff_match_patch"], mod);
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else // Plain browser env
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mod(CodeMirror);
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})(function(CodeMirror) {
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"use strict";
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var Pos = CodeMirror.Pos;
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var svgNS = "http://www.w3.org/2000/svg";
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function DiffView(mv, type) {
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this.mv = mv;
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this.type = type;
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this.classes = type == "left"
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? {chunk: "CodeMirror-merge-l-chunk",
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start: "CodeMirror-merge-l-chunk-start",
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end: "CodeMirror-merge-l-chunk-end",
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insert: "CodeMirror-merge-l-inserted",
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del: "CodeMirror-merge-l-deleted",
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connect: "CodeMirror-merge-l-connect"}
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: {chunk: "CodeMirror-merge-r-chunk",
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start: "CodeMirror-merge-r-chunk-start",
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end: "CodeMirror-merge-r-chunk-end",
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insert: "CodeMirror-merge-r-inserted",
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del: "CodeMirror-merge-r-deleted",
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connect: "CodeMirror-merge-r-connect"};
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}
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DiffView.prototype = {
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constructor: DiffView,
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init: function(pane, orig, options) {
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this.edit = this.mv.edit;
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;(this.edit.state.diffViews || (this.edit.state.diffViews = [])).push(this);
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this.orig = CodeMirror(pane, copyObj({value: orig, readOnly: !this.mv.options.allowEditingOriginals}, copyObj(options)));
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if (this.mv.options.connect == "align") {
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if (!this.edit.state.trackAlignable) this.edit.state.trackAlignable = new TrackAlignable(this.edit)
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this.orig.state.trackAlignable = new TrackAlignable(this.orig)
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}
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this.lockButton.title = this.edit.phrase("Toggle locked scrolling");
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this.orig.state.diffViews = [this];
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var classLocation = options.chunkClassLocation || "background";
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if (Object.prototype.toString.call(classLocation) != "[object Array]") classLocation = [classLocation]
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this.classes.classLocation = classLocation
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this.diff = getDiff(asString(orig), asString(options.value), this.mv.options.ignoreWhitespace);
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this.chunks = getChunks(this.diff);
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this.diffOutOfDate = this.dealigned = false;
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this.needsScrollSync = null
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this.showDifferences = options.showDifferences !== false;
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},
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registerEvents: function(otherDv) {
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this.forceUpdate = registerUpdate(this);
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setScrollLock(this, true, false);
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registerScroll(this, otherDv);
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},
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setShowDifferences: function(val) {
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val = val !== false;
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if (val != this.showDifferences) {
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this.showDifferences = val;
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this.forceUpdate("full");
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}
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}
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};
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function ensureDiff(dv) {
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if (dv.diffOutOfDate) {
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dv.diff = getDiff(dv.orig.getValue(), dv.edit.getValue(), dv.mv.options.ignoreWhitespace);
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dv.chunks = getChunks(dv.diff);
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dv.diffOutOfDate = false;
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CodeMirror.signal(dv.edit, "updateDiff", dv.diff);
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}
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}
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var updating = false;
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function registerUpdate(dv) {
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var edit = {from: 0, to: 0, marked: []};
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var orig = {from: 0, to: 0, marked: []};
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var debounceChange, updatingFast = false;
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function update(mode) {
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updating = true;
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updatingFast = false;
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if (mode == "full") {
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if (dv.svg) clear(dv.svg);
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if (dv.copyButtons) clear(dv.copyButtons);
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clearMarks(dv.edit, edit.marked, dv.classes);
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clearMarks(dv.orig, orig.marked, dv.classes);
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edit.from = edit.to = orig.from = orig.to = 0;
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}
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ensureDiff(dv);
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if (dv.showDifferences) {
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updateMarks(dv.edit, dv.diff, edit, DIFF_INSERT, dv.classes);
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updateMarks(dv.orig, dv.diff, orig, DIFF_DELETE, dv.classes);
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}
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if (dv.mv.options.connect == "align")
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alignChunks(dv);
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makeConnections(dv);
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if (dv.needsScrollSync != null) syncScroll(dv, dv.needsScrollSync)
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updating = false;
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}
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function setDealign(fast) {
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if (updating) return;
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dv.dealigned = true;
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set(fast);
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}
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function set(fast) {
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if (updating || updatingFast) return;
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clearTimeout(debounceChange);
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if (fast === true) updatingFast = true;
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debounceChange = setTimeout(update, fast === true ? 20 : 250);
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}
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function change(_cm, change) {
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if (!dv.diffOutOfDate) {
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dv.diffOutOfDate = true;
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edit.from = edit.to = orig.from = orig.to = 0;
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}
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// Update faster when a line was added/removed
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setDealign(change.text.length - 1 != change.to.line - change.from.line);
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}
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function swapDoc() {
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dv.diffOutOfDate = true;
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dv.dealigned = true;
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update("full");
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}
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dv.edit.on("change", change);
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dv.orig.on("change", change);
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dv.edit.on("swapDoc", swapDoc);
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dv.orig.on("swapDoc", swapDoc);
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if (dv.mv.options.connect == "align") {
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CodeMirror.on(dv.edit.state.trackAlignable, "realign", setDealign)
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CodeMirror.on(dv.orig.state.trackAlignable, "realign", setDealign)
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}
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dv.edit.on("viewportChange", function() { set(false); });
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dv.orig.on("viewportChange", function() { set(false); });
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update();
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return update;
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}
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function registerScroll(dv, otherDv) {
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dv.edit.on("scroll", function() {
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syncScroll(dv, true) && makeConnections(dv);
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});
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dv.orig.on("scroll", function() {
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syncScroll(dv, false) && makeConnections(dv);
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if (otherDv) syncScroll(otherDv, true) && makeConnections(otherDv);
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});
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}
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function syncScroll(dv, toOrig) {
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// Change handler will do a refresh after a timeout when diff is out of date
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if (dv.diffOutOfDate) {
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if (dv.lockScroll && dv.needsScrollSync == null) dv.needsScrollSync = toOrig
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return false
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}
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dv.needsScrollSync = null
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if (!dv.lockScroll) return true;
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var editor, other, now = +new Date;
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if (toOrig) { editor = dv.edit; other = dv.orig; }
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else { editor = dv.orig; other = dv.edit; }
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// Don't take action if the position of this editor was recently set
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// (to prevent feedback loops)
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if (editor.state.scrollSetBy == dv && (editor.state.scrollSetAt || 0) + 250 > now) return false;
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var sInfo = editor.getScrollInfo();
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if (dv.mv.options.connect == "align") {
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targetPos = sInfo.top;
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} else {
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var halfScreen = .5 * sInfo.clientHeight, midY = sInfo.top + halfScreen;
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var mid = editor.lineAtHeight(midY, "local");
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var around = chunkBoundariesAround(dv.chunks, mid, toOrig);
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var off = getOffsets(editor, toOrig ? around.edit : around.orig);
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var offOther = getOffsets(other, toOrig ? around.orig : around.edit);
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var ratio = (midY - off.top) / (off.bot - off.top);
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var targetPos = (offOther.top - halfScreen) + ratio * (offOther.bot - offOther.top);
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var botDist, mix;
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// Some careful tweaking to make sure no space is left out of view
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// when scrolling to top or bottom.
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if (targetPos > sInfo.top && (mix = sInfo.top / halfScreen) < 1) {
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targetPos = targetPos * mix + sInfo.top * (1 - mix);
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} else if ((botDist = sInfo.height - sInfo.clientHeight - sInfo.top) < halfScreen) {
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var otherInfo = other.getScrollInfo();
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var botDistOther = otherInfo.height - otherInfo.clientHeight - targetPos;
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if (botDistOther > botDist && (mix = botDist / halfScreen) < 1)
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targetPos = targetPos * mix + (otherInfo.height - otherInfo.clientHeight - botDist) * (1 - mix);
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}
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}
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other.scrollTo(sInfo.left, targetPos);
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other.state.scrollSetAt = now;
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other.state.scrollSetBy = dv;
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return true;
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}
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function getOffsets(editor, around) {
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var bot = around.after;
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if (bot == null) bot = editor.lastLine() + 1;
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return {top: editor.heightAtLine(around.before || 0, "local"),
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bot: editor.heightAtLine(bot, "local")};
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}
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function setScrollLock(dv, val, action) {
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dv.lockScroll = val;
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if (val && action != false) syncScroll(dv, DIFF_INSERT) && makeConnections(dv);
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(val ? CodeMirror.addClass : CodeMirror.rmClass)(dv.lockButton, "CodeMirror-merge-scrolllock-enabled");
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}
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// Updating the marks for editor content
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function removeClass(editor, line, classes) {
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var locs = classes.classLocation
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for (var i = 0; i < locs.length; i++) {
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editor.removeLineClass(line, locs[i], classes.chunk);
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editor.removeLineClass(line, locs[i], classes.start);
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editor.removeLineClass(line, locs[i], classes.end);
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}
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}
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function clearMarks(editor, arr, classes) {
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for (var i = 0; i < arr.length; ++i) {
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var mark = arr[i];
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if (mark instanceof CodeMirror.TextMarker)
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mark.clear();
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else if (mark.parent)
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removeClass(editor, mark, classes);
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}
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arr.length = 0;
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}
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// FIXME maybe add a margin around viewport to prevent too many updates
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function updateMarks(editor, diff, state, type, classes) {
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var vp = editor.getViewport();
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editor.operation(function() {
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if (state.from == state.to || vp.from - state.to > 20 || state.from - vp.to > 20) {
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clearMarks(editor, state.marked, classes);
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markChanges(editor, diff, type, state.marked, vp.from, vp.to, classes);
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state.from = vp.from; state.to = vp.to;
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} else {
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if (vp.from < state.from) {
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markChanges(editor, diff, type, state.marked, vp.from, state.from, classes);
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state.from = vp.from;
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}
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if (vp.to > state.to) {
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markChanges(editor, diff, type, state.marked, state.to, vp.to, classes);
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state.to = vp.to;
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}
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}
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});
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}
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function addClass(editor, lineNr, classes, main, start, end) {
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var locs = classes.classLocation, line = editor.getLineHandle(lineNr);
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for (var i = 0; i < locs.length; i++) {
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if (main) editor.addLineClass(line, locs[i], classes.chunk);
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if (start) editor.addLineClass(line, locs[i], classes.start);
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if (end) editor.addLineClass(line, locs[i], classes.end);
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}
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return line;
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}
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function markChanges(editor, diff, type, marks, from, to, classes) {
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var pos = Pos(0, 0);
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var top = Pos(from, 0), bot = editor.clipPos(Pos(to - 1));
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var cls = type == DIFF_DELETE ? classes.del : classes.insert;
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function markChunk(start, end) {
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var bfrom = Math.max(from, start), bto = Math.min(to, end);
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for (var i = bfrom; i < bto; ++i)
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marks.push(addClass(editor, i, classes, true, i == start, i == end - 1));
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// When the chunk is empty, make sure a horizontal line shows up
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if (start == end && bfrom == end && bto == end) {
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if (bfrom)
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marks.push(addClass(editor, bfrom - 1, classes, false, false, true));
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else
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marks.push(addClass(editor, bfrom, classes, false, true, false));
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}
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}
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var chunkStart = 0, pending = false;
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for (var i = 0; i < diff.length; ++i) {
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var part = diff[i], tp = part[0], str = part[1];
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if (tp == DIFF_EQUAL) {
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var cleanFrom = pos.line + (startOfLineClean(diff, i) ? 0 : 1);
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moveOver(pos, str);
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var cleanTo = pos.line + (endOfLineClean(diff, i) ? 1 : 0);
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if (cleanTo > cleanFrom) {
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if (pending) { markChunk(chunkStart, cleanFrom); pending = false }
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chunkStart = cleanTo;
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}
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} else {
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pending = true
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if (tp == type) {
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var end = moveOver(pos, str, true);
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var a = posMax(top, pos), b = posMin(bot, end);
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if (!posEq(a, b))
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marks.push(editor.markText(a, b, {className: cls}));
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pos = end;
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}
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}
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}
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if (pending) markChunk(chunkStart, pos.line + 1);
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}
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// Updating the gap between editor and original
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function makeConnections(dv) {
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if (!dv.showDifferences) return;
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if (dv.svg) {
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clear(dv.svg);
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var w = dv.gap.offsetWidth;
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attrs(dv.svg, "width", w, "height", dv.gap.offsetHeight);
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}
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if (dv.copyButtons) clear(dv.copyButtons);
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var vpEdit = dv.edit.getViewport(), vpOrig = dv.orig.getViewport();
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var outerTop = dv.mv.wrap.getBoundingClientRect().top
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var sTopEdit = outerTop - dv.edit.getScrollerElement().getBoundingClientRect().top + dv.edit.getScrollInfo().top
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var sTopOrig = outerTop - dv.orig.getScrollerElement().getBoundingClientRect().top + dv.orig.getScrollInfo().top;
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for (var i = 0; i < dv.chunks.length; i++) {
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var ch = dv.chunks[i];
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if (ch.editFrom <= vpEdit.to && ch.editTo >= vpEdit.from &&
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ch.origFrom <= vpOrig.to && ch.origTo >= vpOrig.from)
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drawConnectorsForChunk(dv, ch, sTopOrig, sTopEdit, w);
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}
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}
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function getMatchingOrigLine(editLine, chunks) {
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var editStart = 0, origStart = 0;
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for (var i = 0; i < chunks.length; i++) {
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var chunk = chunks[i];
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if (chunk.editTo > editLine && chunk.editFrom <= editLine) return null;
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if (chunk.editFrom > editLine) break;
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editStart = chunk.editTo;
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origStart = chunk.origTo;
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}
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return origStart + (editLine - editStart);
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}
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// Combines information about chunks and widgets/markers to return
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// an array of lines, in a single editor, that probably need to be
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// aligned with their counterparts in the editor next to it.
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function alignableFor(cm, chunks, isOrig) {
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var tracker = cm.state.trackAlignable
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var start = cm.firstLine(), trackI = 0
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var result = []
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for (var i = 0;; i++) {
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var chunk = chunks[i]
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var chunkStart = !chunk ? 1e9 : isOrig ? chunk.origFrom : chunk.editFrom
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for (; trackI < tracker.alignable.length; trackI += 2) {
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var n = tracker.alignable[trackI] + 1
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if (n <= start) continue
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if (n <= chunkStart) result.push(n)
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else break
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}
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if (!chunk) break
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result.push(start = isOrig ? chunk.origTo : chunk.editTo)
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}
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return result
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}
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// Given information about alignable lines in two editors, fill in
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// the result (an array of three-element arrays) to reflect the
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// lines that need to be aligned with each other.
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function mergeAlignable(result, origAlignable, chunks, setIndex) {
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var rI = 0, origI = 0, chunkI = 0, diff = 0
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outer: for (;; rI++) {
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var nextR = result[rI], nextO = origAlignable[origI]
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if (!nextR && nextO == null) break
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var rLine = nextR ? nextR[0] : 1e9, oLine = nextO == null ? 1e9 : nextO
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while (chunkI < chunks.length) {
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var chunk = chunks[chunkI]
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if (chunk.origFrom <= oLine && chunk.origTo > oLine) {
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origI++
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rI--
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continue outer;
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}
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if (chunk.editTo > rLine) {
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if (chunk.editFrom <= rLine) continue outer;
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break
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}
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diff += (chunk.origTo - chunk.origFrom) - (chunk.editTo - chunk.editFrom)
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chunkI++
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}
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if (rLine == oLine - diff) {
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nextR[setIndex] = oLine
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origI++
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} else if (rLine < oLine - diff) {
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nextR[setIndex] = rLine + diff
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} else {
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var record = [oLine - diff, null, null]
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record[setIndex] = oLine
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result.splice(rI, 0, record)
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origI++
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}
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}
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}
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function findAlignedLines(dv, other) {
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var alignable = alignableFor(dv.edit, dv.chunks, false), result = []
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if (other) for (var i = 0, j = 0; i < other.chunks.length; i++) {
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var n = other.chunks[i].editTo
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while (j < alignable.length && alignable[j] < n) j++
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if (j == alignable.length || alignable[j] != n) alignable.splice(j++, 0, n)
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}
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for (var i = 0; i < alignable.length; i++)
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result.push([alignable[i], null, null])
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mergeAlignable(result, alignableFor(dv.orig, dv.chunks, true), dv.chunks, 1)
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if (other)
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mergeAlignable(result, alignableFor(other.orig, other.chunks, true), other.chunks, 2)
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return result
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}
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function alignChunks(dv, force) {
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if (!dv.dealigned && !force) return;
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if (!dv.orig.curOp) return dv.orig.operation(function() {
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alignChunks(dv, force);
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});
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dv.dealigned = false;
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var other = dv.mv.left == dv ? dv.mv.right : dv.mv.left;
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if (other) {
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ensureDiff(other);
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other.dealigned = false;
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}
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var linesToAlign = findAlignedLines(dv, other);
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// Clear old aligners
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var aligners = dv.mv.aligners;
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for (var i = 0; i < aligners.length; i++)
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aligners[i].clear();
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aligners.length = 0;
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var cm = [dv.edit, dv.orig], scroll = [];
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if (other) cm.push(other.orig);
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for (var i = 0; i < cm.length; i++)
|
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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, mergeSpacer: true, handleMouseEvents: true});
|
|
}
|
|
|
|
function drawConnectorsForChunk(dv, chunk, sTopOrig, sTopEdit, w) {
|
|
var flip = dv.type == "left";
|
|
var top = dv.orig.heightAtLine(chunk.origFrom, "local", true) - sTopOrig;
|
|
if (dv.svg) {
|
|
var topLpx = top;
|
|
var topRpx = dv.edit.heightAtLine(chunk.editFrom, "local", true) - sTopEdit;
|
|
if (flip) { var tmp = topLpx; topLpx = topRpx; topRpx = tmp; }
|
|
var botLpx = dv.orig.heightAtLine(chunk.origTo, "local", true) - sTopOrig;
|
|
var botRpx = dv.edit.heightAtLine(chunk.editTo, "local", true) - 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 = dv.edit.phrase(editOriginals ? "Push to left" : "Revert chunk");
|
|
copy.chunk = chunk;
|
|
copy.style.top = (chunk.origTo > chunk.origFrom ? top : dv.edit.heightAtLine(chunk.editFrom, "local") - sTopEdit) + "px";
|
|
|
|
if (editOriginals) {
|
|
var topReverse = dv.edit.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;
|
|
var origStart = chunk.origTo > from.lastLine() ? Pos(chunk.origFrom - 1) : Pos(chunk.origFrom, 0)
|
|
var origEnd = Pos(chunk.origTo, 0)
|
|
var editStart = chunk.editTo > to.lastLine() ? Pos(chunk.editFrom - 1) : Pos(chunk.editFrom, 0)
|
|
var editEnd = Pos(chunk.editTo, 0)
|
|
var handler = dv.mv.options.revertChunk
|
|
if (handler)
|
|
handler(dv.mv, from, origStart, origEnd, to, editStart, editEnd)
|
|
else
|
|
to.replaceRange(from.getRange(origStart, origEnd), editStart, editEnd)
|
|
}
|
|
|
|
// 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 CodeMirror-merge-left");
|
|
wrap.push(leftPane);
|
|
wrap.push(buildGap(left));
|
|
}
|
|
|
|
var editPane = elt("div", null, "CodeMirror-merge-pane CodeMirror-merge-editor");
|
|
wrap.push(editPane);
|
|
|
|
if (hasRight) {
|
|
right = this.right = new DiffView(this, "right");
|
|
wrap.push(buildGap(right));
|
|
var rightPane = elt("div", null, "CodeMirror-merge-pane CodeMirror-merge-right");
|
|
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);
|
|
}
|
|
if (left) left.registerEvents(right)
|
|
if (right) right.registerEvents(left)
|
|
|
|
|
|
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");
|
|
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 = {
|
|
constructor: 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;
|
|
function getDiff(a, b, ignoreWhitespace) {
|
|
if (!dmp) dmp = new diff_match_patch();
|
|
|
|
var diff = dmp.diff_main(a, b);
|
|
// The library sometimes leaves in empty parts, which confuse the algorithm
|
|
for (var i = 0; i < diff.length; ++i) {
|
|
var part = diff[i];
|
|
if (ignoreWhitespace ? !/[^ \t]/.test(part[1]) : !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 = [];
|
|
if (!diff.length) return 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) || edit.line < startEdit || orig.line < startOrig ? 1 : 0;
|
|
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 && i < diff.length - 2) || next.charCodeAt(0) != 10) return false;
|
|
if (i == diff.length - 2) return true;
|
|
next = diff[i + 2][1];
|
|
return (next.length > 1 || i == diff.length - 3) && 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 = cm.phrase("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");
|
|
}
|
|
if (mark.explicitlyCleared) clear();
|
|
CodeMirror.on(widget, "click", clear);
|
|
mark.on("clear", clear);
|
|
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;
|
|
}
|
|
|
|
// Tracks collapsed markers and line widgets, in order to be able to
|
|
// accurately align the content of two editors.
|
|
|
|
var F_WIDGET = 1, F_WIDGET_BELOW = 2, F_MARKER = 4
|
|
|
|
function TrackAlignable(cm) {
|
|
this.cm = cm
|
|
this.alignable = []
|
|
this.height = cm.doc.height
|
|
var self = this
|
|
cm.on("markerAdded", function(_, marker) {
|
|
if (!marker.collapsed) return
|
|
var found = marker.find(1)
|
|
if (found != null) self.set(found.line, F_MARKER)
|
|
})
|
|
cm.on("markerCleared", function(_, marker, _min, max) {
|
|
if (max != null && marker.collapsed)
|
|
self.check(max, F_MARKER, self.hasMarker)
|
|
})
|
|
cm.on("markerChanged", this.signal.bind(this))
|
|
cm.on("lineWidgetAdded", function(_, widget, lineNo) {
|
|
if (widget.mergeSpacer) return
|
|
if (widget.above) self.set(lineNo - 1, F_WIDGET_BELOW)
|
|
else self.set(lineNo, F_WIDGET)
|
|
})
|
|
cm.on("lineWidgetCleared", function(_, widget, lineNo) {
|
|
if (widget.mergeSpacer) return
|
|
if (widget.above) self.check(lineNo - 1, F_WIDGET_BELOW, self.hasWidgetBelow)
|
|
else self.check(lineNo, F_WIDGET, self.hasWidget)
|
|
})
|
|
cm.on("lineWidgetChanged", this.signal.bind(this))
|
|
cm.on("change", function(_, change) {
|
|
var start = change.from.line, nBefore = change.to.line - change.from.line
|
|
var nAfter = change.text.length - 1, end = start + nAfter
|
|
if (nBefore || nAfter) self.map(start, nBefore, nAfter)
|
|
self.check(end, F_MARKER, self.hasMarker)
|
|
if (nBefore || nAfter) self.check(change.from.line, F_MARKER, self.hasMarker)
|
|
})
|
|
cm.on("viewportChange", function() {
|
|
if (self.cm.doc.height != self.height) self.signal()
|
|
})
|
|
}
|
|
|
|
TrackAlignable.prototype = {
|
|
signal: function() {
|
|
CodeMirror.signal(this, "realign")
|
|
this.height = this.cm.doc.height
|
|
},
|
|
|
|
set: function(n, flags) {
|
|
var pos = -1
|
|
for (; pos < this.alignable.length; pos += 2) {
|
|
var diff = this.alignable[pos] - n
|
|
if (diff == 0) {
|
|
if ((this.alignable[pos + 1] & flags) == flags) return
|
|
this.alignable[pos + 1] |= flags
|
|
this.signal()
|
|
return
|
|
}
|
|
if (diff > 0) break
|
|
}
|
|
this.signal()
|
|
this.alignable.splice(pos, 0, n, flags)
|
|
},
|
|
|
|
find: function(n) {
|
|
for (var i = 0; i < this.alignable.length; i += 2)
|
|
if (this.alignable[i] == n) return i
|
|
return -1
|
|
},
|
|
|
|
check: function(n, flag, pred) {
|
|
var found = this.find(n)
|
|
if (found == -1 || !(this.alignable[found + 1] & flag)) return
|
|
if (!pred.call(this, n)) {
|
|
this.signal()
|
|
var flags = this.alignable[found + 1] & ~flag
|
|
if (flags) this.alignable[found + 1] = flags
|
|
else this.alignable.splice(found, 2)
|
|
}
|
|
},
|
|
|
|
hasMarker: function(n) {
|
|
var handle = this.cm.getLineHandle(n)
|
|
if (handle.markedSpans) for (var i = 0; i < handle.markedSpans.length; i++)
|
|
if (handle.markedSpans[i].marker.collapsed && handle.markedSpans[i].to != null)
|
|
return true
|
|
return false
|
|
},
|
|
|
|
hasWidget: function(n) {
|
|
var handle = this.cm.getLineHandle(n)
|
|
if (handle.widgets) for (var i = 0; i < handle.widgets.length; i++)
|
|
if (!handle.widgets[i].above && !handle.widgets[i].mergeSpacer) return true
|
|
return false
|
|
},
|
|
|
|
hasWidgetBelow: function(n) {
|
|
if (n == this.cm.lastLine()) return false
|
|
var handle = this.cm.getLineHandle(n + 1)
|
|
if (handle.widgets) for (var i = 0; i < handle.widgets.length; i++)
|
|
if (handle.widgets[i].above && !handle.widgets[i].mergeSpacer) return true
|
|
return false
|
|
},
|
|
|
|
map: function(from, nBefore, nAfter) {
|
|
var diff = nAfter - nBefore, to = from + nBefore, widgetFrom = -1, widgetTo = -1
|
|
for (var i = 0; i < this.alignable.length; i += 2) {
|
|
var n = this.alignable[i]
|
|
if (n == from && (this.alignable[i + 1] & F_WIDGET_BELOW)) widgetFrom = i
|
|
if (n == to && (this.alignable[i + 1] & F_WIDGET_BELOW)) widgetTo = i
|
|
if (n <= from) continue
|
|
else if (n < to) this.alignable.splice(i--, 2)
|
|
else this.alignable[i] += diff
|
|
}
|
|
if (widgetFrom > -1) {
|
|
var flags = this.alignable[widgetFrom + 1]
|
|
if (flags == F_WIDGET_BELOW) this.alignable.splice(widgetFrom, 2)
|
|
else this.alignable[widgetFrom + 1] = flags & ~F_WIDGET_BELOW
|
|
}
|
|
if (widgetTo > -1 && nAfter)
|
|
this.set(from + nAfter, F_WIDGET_BELOW)
|
|
}
|
|
}
|
|
|
|
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);
|
|
};
|
|
});
|