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lib/Farabi/files/public/assets/codemirror/addon/merge/merge.js  view on Meta::CPAN

      copy.chunk = {topEdit: topEdit, botEdit: botEdit, topOrig: topOrig, botOrig: botOrig};
      copy.style.top = top + "px";
    });
  }

  function copyChunk(dv, chunk) {
    if (dv.diffOutOfDate) return;
    dv.edit.replaceRange(dv.orig.getRange(Pos(chunk.topOrig, 0), Pos(chunk.botOrig, 0)),
                         Pos(chunk.topEdit, 0), Pos(chunk.botEdit, 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);

    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;

    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);

    var onResize = function() {
      if (left) drawConnectors(left);
      if (right) drawConnectors(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); });
    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) copyChunk(dv, node.chunk);
    });
    var gapElts = [dv.copyButtons, lockWrap];
    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() {
      return this.right && getChunks(this.right);
    },
    leftChunks: function() {
      return this.left && getChunks(this.left);
    }
  };

  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 iterateChunks(diff, f) {
    var startEdit = 0, startOrig = 0;
    var edit = Pos(0, 0), orig = Pos(0, 0);