X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=to-be-integrated%2Fthird-party%2Fcodemirror-3.15%2Faddon%2Fmerge%2Fmerge.js;fp=to-be-integrated%2Fthird-party%2Fcodemirror-3.15%2Faddon%2Fmerge%2Fmerge.js;h=16c3356c20746fa452e5eeeb6990f333bbd32cd5;hb=31540dd504798e0aca69e10d8144fbedc5b16af8;hp=0000000000000000000000000000000000000000;hpb=937653fd70bbf7d95bcf870e7f2b46b4a8fec486;p=myslice.git

diff --git a/to-be-integrated/third-party/codemirror-3.15/addon/merge/merge.js b/to-be-integrated/third-party/codemirror-3.15/addon/merge/merge.js
new file mode 100644
index 00000000..16c3356c
--- /dev/null
+++ b/to-be-integrated/third-party/codemirror-3.15/addon/merge/merge.js
@@ -0,0 +1,447 @@
+(function() {
+  "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.orig = CodeMirror(pane, copyObj({value: orig, readOnly: true}, copyObj(options)));
+
+      this.diff = getDiff(orig, options.value);
+      this.diffOutOfDate = false;
+
+      this.forceUpdate = registerUpdate(this);
+      setScrollLock(this, true, false);
+      registerScroll(this);
+    }
+  };
+
+  function registerUpdate(dv) {
+    var edit = {from: 0, to: 0, marked: []};
+    var orig = {from: 0, to: 0, marked: []};
+    var debounceChange;
+    function update() {
+      if (dv.diffOutOfDate) {
+        dv.diff = getDiff(dv.orig.getValue(), dv.edit.getValue());
+        dv.diffOutOfDate = false;
+      }
+      updateMarks(dv.edit, dv.diff, edit, DIFF_INSERT, dv.classes);
+      updateMarks(dv.orig, dv.diff, orig, DIFF_DELETE, dv.classes);
+      drawConnectors(dv);
+    }
+    function set(slow) {
+      clearTimeout(debounceChange);
+      debounceChange = setTimeout(update, slow == true ? 250 : 100);
+    }
+    dv.edit.on("change", function() {
+      if (!dv.diffOutOfDate) {
+        dv.diffOutOfDate = true;
+        edit.from = edit.to = orig.from = orig.to = 0;
+      }
+      set(true);
+    });
+    dv.edit.on("viewportChange", set);
+    dv.orig.on("viewportChange", set);
+    update();
+    return update;
+  }
+
+  function registerScroll(dv) {
+    dv.edit.on("scroll", function() {
+      syncScroll(dv, DIFF_INSERT) && drawConnectors(dv);
+    });
+    dv.orig.on("scroll", function() {
+      syncScroll(dv, DIFF_DELETE) && drawConnectors(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(), halfScreen = .5 * sInfo.clientHeight, midY = sInfo.top + halfScreen;
+    var mid = editor.lineAtHeight(midY, "local");
+    var around = chunkBoundariesAround(dv.diff, 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) && drawConnectors(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 {
+        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 drawConnectors(dv) {
+    if (dv.svg) {
+      clear(dv.svg);
+      var w = dv.gap.offsetWidth;
+      attrs(dv.svg, "width", w, "height", dv.gap.offsetHeight);
+    }
+    clear(dv.copyButtons);
+
+    var flip = dv.type == "left";
+    var vpEdit = dv.edit.getViewport(), vpOrig = dv.orig.getViewport();
+    var sTopEdit = dv.edit.getScrollInfo().top, sTopOrig = dv.orig.getScrollInfo().top;
+    iterateChunks(dv.diff, function(topOrig, botOrig, topEdit, botEdit) {
+      if (topEdit > vpEdit.to || botEdit < vpEdit.from ||
+          topOrig > vpOrig.to || botOrig < vpOrig.from)
+        return;
+      var topLpx = dv.orig.heightAtLine(topOrig, "local") - sTopOrig, top = topLpx;
+      if (dv.svg) {
+        var topRpx = dv.edit.heightAtLine(topEdit, "local") - sTopEdit;
+        if (flip) { var tmp = topLpx; topLpx = topRpx; topRpx = tmp; }
+        var botLpx = dv.orig.heightAtLine(botOrig, "local") - sTopOrig;
+        var botRpx = dv.edit.heightAtLine(botEdit, "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);
+      }
+      var copy = dv.copyButtons.appendChild(elt("div", dv.type == "left" ? "\u21dd" : "\u21dc",
+                                                "CodeMirror-merge-copy"));
+      copy.title = "Revert chunk";
+      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; }
+  };
+
+  // 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);
+    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) f(startOrig, cleanFromOrig, startEdit, cleanFromEdit);
+          startEdit = cleanToEdit; startOrig = cleanToOrig;
+        }
+      } else {
+        moveOver(tp == DIFF_INSERT ? edit : orig, part[1]);
+      }
+    }
+    if (startEdit <= edit.line || startOrig <= orig.line)
+      f(startOrig, orig.line + 1, startEdit, edit.line + 1);
+  }
+
+  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(diff, n, nInEdit) {
+    var beforeE, afterE, beforeO, afterO;
+    iterateChunks(diff, function(fromOrig, toOrig, fromEdit, toEdit) {
+      var fromLocal = nInEdit ? fromEdit : fromOrig;
+      var toLocal = nInEdit ? toEdit : toOrig;
+      if (afterE == null) {
+        if (fromLocal > n) { afterE = fromEdit; afterO = fromOrig; }
+        else if (toLocal > n) { afterE = toEdit; afterO = toOrig; }
+      }
+      if (toLocal <= n) { beforeE = toEdit; beforeO = toOrig; }
+      else if (fromLocal <= n) { beforeE = fromEdit; beforeO = fromOrig; }
+    });
+    return {edit: {before: beforeE, after: afterE}, orig: {before: beforeO, after: afterO}};
+  }
+
+  // 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; }
+})();