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diffviewer3.js
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diffviewer3.js
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// DiffViewer for Diff/AST, Copyright 2020 Codinuum Software Lab <https://codinuum.com>
// based on
// 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("codemirror"));
else if (typeof define == "function" && define.amd) // AMD
define(["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";
var classesDts = { del : "DTS-deleted",
ins : "DTS-inserted",
rel : "DTS-relabeled",
mov : "DTS-moved",
movrel : "DTS-moved-and-relabeled",
ign : "DTS-ignored",
mis : "DTS-missed",
frame : "DTS-frame",
frameEss : "DTS-frame-essential",
cmov : "DTS-connector-move",
crel : "DTS-connector-relabel",
cmovrel : "DTS-connector-movrel",
calign : "DTS-connector-align",
ccorr : "DTS-connector-corr",
ess : "DTS-essential-lines",
essStart : "DTS-essential-lines-start",
essEnd : "DTS-essential-lines-end",
};
function DiffView(mv, type, index) {
//console.log("constructing DiffView...");
this.mv = mv;
this.type = type;
this.index = index;
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, diffDts, options) {
this.edit = this.mv.edit;
(this.edit.state.diffViews || (this.edit.state.diffViews = [])).push(this);
this.diffDtsEss = this.mv.diffDtsEss;
var origReadOnly = !this.mv.options.allowEditingOriginals;
/*
if (origReadOnly)
origReadOnly = "nocursor";
*/
this.orig = CodeMirror(pane, copyObj({value: orig, readOnly: origReadOnly}, copyObj(options)));
if (this.mv.options.connect == "align") {
if (!this.edit.state.trackAlignable) this.edit.state.trackAlignable = new TrackAlignable(this.edit)
this.orig.state.trackAlignable = new TrackAlignable(this.orig)
}
this.lockButton.title = this.edit.phrase("Toggle locked scrolling");
this.orig.state.diffViews = [this];
var classLocation = options.chunkClassLocation || "background";
if (Object.prototype.toString.call(classLocation) != "[object Array]") classLocation = [classLocation]
this.classes.classLocation = classLocation
this.showDifferences = options.showDifferences !== false;
this.showDts = options.showDts;
if (this.showDifferences) {
this.deferredDiffFlag = false;
this.diff = getDiff(asString(orig), asString(options.value), this.mv.options.ignoreWhitespace);
this.chunks = getChunks(this.diff);
} else { // deferred
this.deferredDiffFlag = true;
this.diff = [];
this.chunks = [];
}
this.diffOutOfDate = this.dealigned = false;
this.needsScrollSync = null
this.diffDts = diffDts;
this.showToolTip = true;
this.toolTipTimer = null;
this.orig.dv = this;
this.edit.dv = this;
this.orig.on("mousedown", handleEditClick);
},
registerEvents: function(otherDv) {
this.forceUpdate = registerUpdate(this);
setScrollLock(this, false, false);
registerScroll(this, otherDv);
},
setShowDifferences: function(val) {
val = val !== false;
if (val != this.showDifferences) {
if (this.deferredDiffFlag) {
this.diff = getDiff(this.orig.getValue(), this.edit.getValue(), this.mv.options.ignoreWhitespace);
this.chunks = getChunks(this.diff);
this.deferredDiffFlag = false;
}
this.showDifferences = val;
this.forceUpdate("full");
}
},
setShowDts: function(val) {
if (val != this.showDts) {
this.showDts = val;
if (this.index == 1 || val != 1) {
this.forceUpdate("full");
/*
if (val)
setScrollLock(this, true, true);
else
setScrollLock(this, false, false);
*/
if (this.dtsAnnot)
this.dtsAnnot.clear();
if (this.dtsAnnotEss)
this.dtsAnnotEss.clear();
this.dtsAnnot = null;
this.dtsAnnotEss = null;
}
}
},
setShowToolTip: function(val, ms) {
val = val !== false;
if (!val) {
if (this.toolTipTimer) {
//console.log("[setShowToopTip] cancel: tid="+this.toolTipTimer);
clearTimeout(this.toolTipTimer);
}
if (!ms) ms = 1000;
this.toolTipTimer = setTimeout(enableToolTip, ms, this);
}
if (val != this.showToolTip) {
this.showToolTip = val;
if (val) {
this.forceUpdate("full");
this.toolTipTimer = null;
}
//console.log("ToolTip "+(val ? "enabled!" : "disabled!"));
}
}
};
function ensureDiff(dv) {
if (dv.diffOutOfDate) {
dv.diff = getDiff(dv.orig.getValue(), dv.edit.getValue(), dv.mv.options.ignoreWhitespace);
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 editDts = {from: 0, to: 0, marked: []};
var origDts = {from: 0, to: 0, marked: []};
var editDtsEss = {from: 0, to: 0, marked: [], tbl: {}};
var origDtsEss = {from: 0, to: 0, marked: [], tbl: {}};
var debounceChange, updatingFast = false;
function update(mode) {
updating = true;
updatingFast = false;
if (mode == "full") {
if (dv.svg) clear(dv.svg);
if (dv.mv.svg) clear(dv.mv.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;
clearMarksDts(dv.edit, editDts.marked);
clearMarksDts(dv.orig, origDts.marked);
editDts.from = editDts.to = origDts.from = origDts.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);
}
if ((dv.showDts & dv.index) > 0) {
updateMarksDts(1, dv.edit, dv.diffDts, editDts);
updateMarksDts(2, dv.orig, dv.diffDts, origDts);
}
if (dv.mv.options.connect == "align") alignChunks(dv);
makeConnections(dv);
if (dv.needsScrollSync != null) syncScroll(dv, dv.needsScrollSync)
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);
}
function swapDoc() {
dv.diffOutOfDate = true;
dv.dealigned = true;
update("full");
}
dv.edit.on("change", change);
dv.orig.on("change", change);
dv.edit.on("swapDoc", swapDoc);
dv.orig.on("swapDoc", swapDoc);
if (dv.mv.options.connect == "align") {
CodeMirror.on(dv.edit.state.trackAlignable, "realign", setDealign)
CodeMirror.on(dv.orig.state.trackAlignable, "realign", setDealign)
}
dv.edit.on("viewportChange", function() { set(false); });
dv.orig.on("viewportChange", function() { set(false); });
dv.edit.on("keyHandled", function() { set(false); });
dv.orig.on("keyHandled", function() { set(false); });
dv.edit.onSearchClose = function() { set(false); };
dv.orig.onSearchClose = function() { set(false); };
update();
return update;
}
function registerScroll(dv, otherDv) {
dv.edit.on("scroll", function() {
syncScroll(dv, true) && makeConnections(dv);
});
dv.orig.on("scroll", function() {
syncScroll(dv, false) && makeConnections(dv);
if (otherDv) syncScroll(otherDv, true) && makeConnections(otherDv);
});
}
function syncScroll(dv, toOrig) {
// Change handler will do a refresh after a timeout when diff is out of date
if (dv.diffOutOfDate) {
if (dv.lockScroll && dv.needsScrollSync == null) dv.needsScrollSync = toOrig
return false;
}
dv.needsScrollSync = null
if (!dv.lockScroll) return true;
var editor, other, now = +new Date;
if (toOrig) { 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) + 250 > 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;
if (dv.showDifferences)
around = chunkBoundariesAround(dv.chunks, mid, toOrig);
else
around = chunkBoundariesAroundDts(dv.diffDts, mid, toOrig);
var off = getOffsets(editor, toOrig ? around.edit : around.orig);
var offOther = getOffsets(other, toOrig ? 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 \u21da";
(val ? CodeMirror.addClass : CodeMirror.rmClass)(dv.lockButton, "CodeMirror-merge-scrolllock-enabled");
}
// Updating the marks for editor content
function removeClass(editor, line, classes) {
var locs = classes.classLocation
for (var i = 0; i < locs.length; i++) {
editor.removeLineClass(line, locs[i], classes.chunk);
editor.removeLineClass(line, locs[i], classes.start);
editor.removeLineClass(line, locs[i], classes.end);
}
}
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)
removeClass(editor, mark, classes);
}
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 addClass(editor, lineNr, classes, main, start, end) {
var locs = classes.classLocation, line = editor.getLineHandle(lineNr);
for (var i = 0; i < locs.length; i++) {
if (main) editor.addLineClass(line, locs[i], classes.chunk);
if (start) editor.addLineClass(line, locs[i], classes.start);
if (end) editor.addLineClass(line, locs[i], classes.end);
}
return line;
}
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)
marks.push(addClass(editor, i, classes, true, i == start, i == end - 1));
// When the chunk is empty, make sure a horizontal line shows up
if (start == end && bfrom == end && bto == end) {
if (bfrom)
marks.push(addClass(editor, bfrom - 1, classes, false, false, true));
else
marks.push(addClass(editor, bfrom, classes, false, true, false));
}
}
var chunkStart = 0, pending = false;
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 (pending) { markChunk(chunkStart, cleanFrom); pending = false }
chunkStart = cleanTo;
}
} else {
pending = true
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 (pending) markChunk(chunkStart, pos.line + 1);
}
function clearMarksDts(editor, arr) {
for (var i = 0; i < arr.length; ++i) {
var mark = arr[i];
if (mark instanceof CodeMirror.TextMarker) {
mark.clear();
}
}
arr.length = 0;
}
function updateMarksDts(idx, cm, diffDts, state) {
var vp = cm.getViewport();
//console.log('['+idx+'][updateMarksDts] vp=['+vp.from+'-'+vp.to+']', state);
cm.operation(function() {
if (state.from == state.to || vp.from - state.to > 20 || state.from - vp.to > 20) {
clearMarksDts(cm, state.marked);
markChangesDts(idx, cm, diffDts, state.marked, vp.from, vp.to);
state.from = vp.from;
state.to = vp.to;
} else {
if (vp.from < state.from) {
markChangesDts(idx, cm, diffDts, state.marked, Math.max(vp.from-10, 0), state.from);
state.from = vp.from;
}
if (vp.to > state.to) {
markChangesDts(idx, cm, diffDts, state.marked, state.to, vp.to+10);
state.to = vp.to;
}
}
});
}
function findStartIndex(idx, edits, from, to) {
if (from == 0) return 0;
var i = 0;
var j = edits.length;
var e, v, v_, p;
var count = 0;
//console.log('['+idx+'][findStartIndex] i='+i+', j='+j+', vp=['+from+'-'+to+']');
while (j - i > 2) {
//console.log('i='+i+', j='+j);
count += 1;
if (count > 100)
return 0;
p = Math.floor((i + j) / 2);
e = edits[p];
if (e == undefined) return 0;
v = e['line'+idx];
v_ = e['line'+idx+'_'];
//console.log('p='+p+', v='+v+', v_='+v_);
if (v_ < from) {
i = p;
} else if (v > to) {
j = p;
} else {
while (p > 0 && edits[p-1]['line'+idx+'_'] >= from) {
count += 1;
p -= 1;
}
i = p;
break;
}
//console.log(' -> i='+i+', j='+j);
}
//console.log('['+idx+'][findStartIndex] i='+i+', v=['+edits[i]['line'+idx]+'-'+edits[i]['line'+idx+'_']+'], count='+count);
return i;
}
function markChangesDts(idx, cm, diffDts, marks, from, to) {
//console.log("["+idx+"][markChangesDts] marked="+marks.length+", vp=["+from+"-"+to+"]");
var edits;
if (idx == 1)
edits = diffDts.edits1;
else if (idx == 2)
edits = diffDts.edits2;
if (edits == undefined) return null;
var doc = cm.getDoc();
var top = new Pos(from, 0), bot = cm.clipPos(new Pos(to - 1, 0));
var editDts, tag, lab, segs, cls, IGN, MISS;
var seg, st, ed, st_pos, ed_pos, stl, edl, stl0, edl0;
var i, j, k;
var m, ms, segSkip, editBreak = false;
// for edits
var count = 0;
var startIndex = findStartIndex(idx, edits, from, to);
//console.log('['+idx+'][markChangesDts] startIndex='+startIndex+', edits.length='+edits.length);
for (i = startIndex; i < edits.length; ++i) {
count += 1;
editDts = edits[i];
if (editDts == null)
continue;
//console.log(i, editDts);
tag = editDts["tag"];
lab = "segments"+idx;
//console.log('tag="'+tag+'",lab="'+lab+'"');
segs = editDts[lab];
if (segs == undefined)
continue;
cls = null;
IGN = "IGNORED"+idx;
MISS = "MISPARSED"+idx;
switch (tag) {
case "DELETE":
cls = classesDts.del;
break;
case "INSERT":
cls = classesDts.ins;
break;
case "RELABEL":
cls = classesDts.rel;
break;
case "MOVREL":
cls = classesDts.movrel;
break;
case "MOVE":
cls = classesDts.mov;
break;
case IGN:
cls = classesDts.ign;
break;
case MISS:
cls = classesDts.miss;
break;
}
if (cls == null)
continue;
stl0 = doc.posFromIndex(editDts['start'+idx]).line;
edl0 = doc.posFromIndex(editDts['end'+idx]).line;
for (j = 0; j < segs.length; j++) {
seg = segs[j];
st = seg["start"];
ed = seg["end"] + 1;
//console.log("["+cls+"] st="+st+", ed="+ed);
st_pos = doc.posFromIndex(st);
ed_pos = doc.posFromIndex(ed);
stl = st_pos.line;
edl = ed_pos.line;
//console.log('['+idx+"][markChangesDts]["+cls+"]", stl, edl);
//st_pos = posMax(top, st_pos);
//ed_pos = posMin(bot, ed_pos);
//console.log("["+cls+"]", st_pos, ed_pos);
segSkip = false;
ms = doc.findMarks(st_pos, ed_pos);
for (k = 0; k < ms.length; k++) {
if (ms[k].className == cls) {
if (ms[k].editDts === editDts) {
segSkip = true;
break;
}
}
}
if (!segSkip) {
m = doc.markText(st_pos, ed_pos, {className:cls,
startStyle:cls+'-left',
endStyle:cls+'-right',
atomic:false});
m.editDts = editDts;
marks.push(m);
}
// if (editDts.tag == 'DELETE' || editDts.tag == 'INSERT')
// console.log("["+idx+"][markChangesDts] "+cls, st_pos, ed_pos);
if (edl < from || to < stl) {
if (stl0 > to) editBreak = true;
}
}
if (editBreak) break;
}
//console.log("["+idx+"][markChangesDts] -> marked "+marks.length+', count='+count);
return count;
}
// Updating the gap between editor and original
function makeConnections(dv) {
if ((dv.showDts & dv.index) > 0) {
drawConnectorsDts(dv, dv.diffDts, false);
} else {
drawConnectorsDts(dv, dv.mv.diffDtsEss, true);
}
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 outerTop = dv.mv.wrap.getBoundingClientRect().top
var sTopEdit = outerTop - dv.edit.getScrollerElement().getBoundingClientRect().top + dv.edit.getScrollInfo().top;
var sTopOrig = outerTop - dv.orig.getScrollerElement().getBoundingClientRect().top + 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);
}
// Combines information about chunks and widgets/markers to return
// an array of lines, in a single editor, that probably need to be
// aligned with their counterparts in the editor next to it.
function alignableFor(cm, chunks, isOrig) {
var tracker = cm.state.trackAlignable
var start = cm.firstLine(), trackI = 0
var result = []
for (var i = 0;; i++) {
var chunk = chunks[i]
var chunkStart = !chunk ? 1e9 : isOrig ? chunk.origFrom : chunk.editFrom
for (; trackI < tracker.alignable.length; trackI += 2) {
var n = tracker.alignable[trackI] + 1
if (n <= start) continue
if (n <= chunkStart) result.push(n)
else break
}
if (!chunk) break
result.push(start = isOrig ? chunk.origTo : chunk.editTo)
}
return result
}
// Given information about alignable lines in two editors, fill in
// the result (an array of three-element arrays) to reflect the
// lines that need to be aligned with each other.
function mergeAlignable(result, origAlignable, chunks, setIndex) {
var rI = 0, origI = 0, chunkI = 0, diff = 0
outer: for (;; rI++) {
var nextR = result[rI], nextO = origAlignable[origI]
if (!nextR && nextO == null) break
var rLine = nextR ? nextR[0] : 1e9, oLine = nextO == null ? 1e9 : nextO
while (chunkI < chunks.length) {
var chunk = chunks[chunkI]
if (chunk.origFrom <= oLine && chunk.origTo > oLine) {
origI++
rI--
continue outer;
}
if (chunk.editTo > rLine) {
if (chunk.editFrom <= rLine) continue outer;
break
}
diff += (chunk.origTo - chunk.origFrom) - (chunk.editTo - chunk.editFrom)
chunkI++
}
if (rLine == oLine - diff) {
nextR[setIndex] = oLine
origI++
} else if (rLine < oLine - diff) {
nextR[setIndex] = rLine + diff
} else {
var record = [oLine - diff, null, null]
record[setIndex] = oLine
result.splice(rI, 0, record)
origI++
}
}
}
function findAlignedLines(dv, other) {
var alignable = alignableFor(dv.edit, dv.chunks, false), result = []
if (other) for (var i = 0, j = 0; i < other.chunks.length; i++) {
var n = other.chunks[i].editTo
while (j < alignable.length && alignable[j] < n) j++
if (j == alignable.length || alignable[j] != n) alignable.splice(j++, 0, n)
}
for (var i = 0; i < alignable.length; i++)
result.push([alignable[i], null, null])
mergeAlignable(result, alignableFor(dv.orig, dv.chunks, true), dv.chunks, 1)
if (other)
mergeAlignable(result, alignableFor(other.orig, other.chunks, true), other.chunks, 2)
return result
}
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.edit, dv.orig], 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, mergeSpacer: true, handleMouseEvents: true});
}
function getRectPathDts(cm, bound, pos0, pos1) {
var dx = bound.left;
var dy = bound.top;
//console.log("dx="+dx+",dy="+dy);
var doc = cm.getDoc();
var p0 = cm.charCoords(pos0, "page");
var p1 = cm.charCoords(pos1, "page");
//console.log("p0={left:"+p0.left+",right:"+p0.right+",top:"+p0.top+",bottom:"+p0.bottom+"}");
//console.log("p1={left:"+p1.left+",right:"+p1.right+",top:"+p1.top+",bottom:"+p1.bottom+"}");
var px = p0.left - dx, py = p0.top - dy;
var bx = px;
/*
if (pos0.line != pos1.line)
console.log("!!! multiline");
*/
var lastLines;
var start = px+" "+py;
if (pos0.ch == 0 || pos0.line == pos1.line) {
lastLines = "L "+start+" ";
} else {
var pl = cm.charCoords(new Pos(pos0.line, 0), "page");
bx = pl.left - dx;
lastLines = "L "+bx+" "+(pl.bottom-dy)+" L "+px+" "+(p0.bottom-dy)+" L "+start+" ";
}
var path = "M "+start+" ";
for (var ln = pos0.line; ln < pos1.line + 1; ln++) {
var line = doc.getLine(ln);
if (ln == pos1.line) { // last line
var px0 = p1.right - dx;
var py0 = p1.bottom - dy;
path += "L "+px0+" "+(p1.top-dy)+" L "+px0+" "+py0+" ";
path += "L "+bx+" "+py0+" "+lastLines;
} else {
var p = cm.charCoords(new Pos(ln, line.length - 1), "page");
var px0 = p.right - dx;
var py0 = p.bottom - dy;
path += "L "+px0+" "+(p.top-dy)+" L "+px0+" "+py0+" ";
}
}
//console.log('path="'+path+'"');
return path;
}
function createClip(baseBound, defs, id, cm, clip, rect) {
if (clip == undefined)
clip = defs.appendChild(document.createElementNS(svgNS, "clipPath"));
attrs(clip, "id", id/*, "clipPathUnits", "objectBoundingBox"*/);
var elem = cm.getWrapperElement();
var bound = elem.getBoundingClientRect();
//console.log("[createClip] id:"+id+", bound: left="+bound.left+", top="+bound.top+", height="+bound.height+", width="+bound.width);
// to avoid dialog
var dialogHeight = 0;
var dialogs = elem.getElementsByClassName("CodeMirror-dialog");
for (var i = 0; i < dialogs.length; i++) {
var r = dialogs[i].getBoundingClientRect();
if (r) {
dialogHeight = r.height;
break;
}
}
// to avoid gutter
var lineGutterWidth = 0;
var x = bound.left;
var width = bound.width;
var lineGutter = cm.display.gutters;
if (lineGutter) {
var b = lineGutter.getBoundingClientRect();
//console.log("[createClip] b: right="+b.right+", top="+b.top+", height="+b.height+", width="+b.width);
lineGutterWidth = b.width;
x = b.right + 1;
width -= lineGutterWidth;
}
// to avoid vertical simplescrollbar
var vscrollbarWidth = 0;
var vscrollbars = elem.getElementsByClassName("CodeMirror-simplescroll-vertical");
for (var i = 0; i < vscrollbars.length; i++) {
var r = vscrollbars[i].getBoundingClientRect();
if (r) {
vscrollbarWidth = r.width;
break;
}
}
//console.log("vscrollbarWidth="+vscrollbarWidth);
width -= vscrollbarWidth;
// to avoid horizontal simplescrollbar
var hscrollbarHeight = 0;
var hscrollbars = elem.getElementsByClassName("CodeMirror-simplescroll-horizontal");
for (var i = 0; i < hscrollbars.length; i++) {
var r = hscrollbars[i].getBoundingClientRect();
if (r) {
hscrollbarHeight = r.height;
break;
}
}
//console.log("hscrollbarHeight="+hscrollbarHeight);
//console.log("[createClip] lineGutterWidth="+lineGutterWidth);
var r = {x:x-baseBound.left,y:bound.top-baseBound.top+dialogHeight,
height:bound.height-dialogHeight-hscrollbarHeight,width:width};
if (rect == undefined)
rect = clip.appendChild(document.createElementNS(svgNS, "rect"));
attrs(rect, "x", r.x, "y", r.y, "height", r.height, "width", r.width);
return [x, r, dialogHeight > 0, lineGutterWidth];
}
function mergeClip(shown0, shown1, rect0, rect1, lgwidth, defs, id) {
var clip = document.createElementNS(svgNS, "clipPath");
attrs(defs.appendChild(clip), "id", id);
var p =
"M "+rect0.x+" "+rect0.y+" v "+rect0.height+
" L "+(rect1.x+rect1.width)+" "+(rect1.y+rect1.height)+
" v "+(-rect1.height);
if (shown0 && !shown1)
p += " L "+(rect0.x+rect0.width)+" "+(rect1.y)+" v "+(rect1.height-rect0.height);
else if (!shown0 && shown1)
p += " h "+(-rect1.width-lgwidth-1)+" v "+(rect1.height-rect0.height);
p += " z";
//console.log("[mergeClip] p="+p);
attrs(clip.appendChild(document.createElementNS(svgNS, "path")),
"d", p);
}
//var MAX_ANNOTATIONS = 1000;
function DtsScrollbarAnnotation(cmL, cmR, diffDts) {
if (!diffDts)
return;
if (cmL.annotateScrollbar && cmR.annotateScrollbar) {
this.annotationL = cmL.annotateScrollbar("DTS-scrollbar-marks");
this.annotationR = cmR.annotateScrollbar("DTS-scrollbar-marks");
this.marksL = [];
this.marksR = [];
var docL = cmL.getDoc();
var docR = cmR.getDoc();