Incs/codemirror/addon/merge/merge.js

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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://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)));
      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.diff = getDiff(asString(orig), asString(options.value), this.mv.options.ignoreWhitespace);
      this.chunks = getChunks(this.diff);
      this.diffOutOfDate = this.dealigned = false;
      this.needsScrollSync = null

      this.showDifferences = options.showDifferences !== false;
    },
    registerEvents: function(otherDv) {