Updated for 3.4.2

Fixes #37: Enable use within shadow-dom by searching beneath this.element.

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "Mergely",
-  "version": "3.3.10",
+  "version": "3.4.2",
   "homepage": "https://github.com/wickedest/Mergely",
   "description": "Merge and diff documents online",
   "main": [
@@ -29,8 +29,8 @@
     "url": "git://github.com/wickedest/Mergely"
   },
   "dependencies": {
-    "mergely": "https://github.com/wickedest/Mergely.git#3.3.10",
+    "mergely": "https://github.com/wickedest/Mergely.git#3.4.2",
     "jquery": "<=2.1.3",
-    "codemirror": "<=4.6.0"
+    "codemirror": "<=5.11.0"
   }
 }

editor/editor.js

@@ -146,7 +146,7 @@ $(document).ready(function() {
 	var color_defaults = {
 		cb: 'cccccc', cg: 'fafafa',
 		ab: 'a3d1ff', ag: 'ddeeff',
-		db: 'ff7f7f', dg: 'edc0c0'
+		db: 'ff7f7f', dg: 'ffe9e9'
 	};
 	applyParameterCss(false);
 

editor/editor.php

@@ -52,7 +52,7 @@ if (isset($_GET['debug'])) {
 	<script type="text/javascript" src="/Mergely/lib/searchcursor.js"></script>
 
 	<script type="text/javascript">
-        var key = '<?php echo $key; ?>';
+        var key = '<?php echo htmlspecialchars($key, ENT_QUOTES, 'UTF-8'); ?>';
         var isSample = key == 'usaindep';
     </script>
     

lib/codemirror.css

@@ -4,10 +4,7 @@
   /* Set height, width, borders, and global font properties here */
   font-family: monospace;
   height: 300px;
-}
-.CodeMirror-scroll {
-  /* Set scrolling behaviour here */
-  overflow: auto;
+  color: black;
 }
 
 /* PADDING */
@@ -36,8 +33,7 @@
   min-width: 20px;
   text-align: right;
   color: #999;
-  -moz-box-sizing: content-box;
-  box-sizing: content-box;
+  white-space: nowrap;
 }
 
 .CodeMirror-guttermarker { color: black; }
@@ -45,19 +41,21 @@
 
 /* CURSOR */
 
-.CodeMirror div.CodeMirror-cursor {
+.CodeMirror-cursor {
   border-left: 1px solid black;
+  border-right: none;
+  width: 0;
 }
 /* Shown when moving in bi-directional text */
 .CodeMirror div.CodeMirror-secondarycursor {
   border-left: 1px solid silver;
 }
-.CodeMirror.cm-keymap-fat-cursor div.CodeMirror-cursor {
+.cm-fat-cursor .CodeMirror-cursor {
   width: auto;
   border: 0;
   background: #7e7;
 }
-.CodeMirror.cm-keymap-fat-cursor div.CodeMirror-cursors {
+.cm-fat-cursor div.CodeMirror-cursors {
   z-index: 1;
 }
 
@@ -67,27 +65,28 @@
   -webkit-animation: blink 1.06s steps(1) infinite;
   -moz-animation: blink 1.06s steps(1) infinite;
   animation: blink 1.06s steps(1) infinite;
+  background-color: #7e7;
 }
 @-moz-keyframes blink {
-  0% { background: #7e7; }
-  50% { background: none; }
-  100% { background: #7e7; }
+  0% {}
+  50% { background-color: transparent; }
+  100% {}
 }
 @-webkit-keyframes blink {
-  0% { background: #7e7; }
-  50% { background: none; }
-  100% { background: #7e7; }
+  0% {}
+  50% { background-color: transparent; }
+  100% {}
 }
 @keyframes blink {
-  0% { background: #7e7; }
-  50% { background: none; }
-  100% { background: #7e7; }
+  0% {}
+  50% { background-color: transparent; }
+  100% {}
 }
 
 /* Can style cursor different in overwrite (non-insert) mode */
-div.CodeMirror-overwrite div.CodeMirror-cursor {}
+.CodeMirror-overwrite .CodeMirror-cursor {}
 
-.cm-tab { display: inline-block; }
+.cm-tab { display: inline-block; text-decoration: inherit; }
 
 .CodeMirror-ruler {
   border-left: 1px solid #ccc;
@@ -96,6 +95,15 @@ div.CodeMirror-overwrite div.CodeMirror-cursor {}
 
 /* DEFAULT THEME */
 
+.cm-s-default .cm-header {color: blue;}
+.cm-s-default .cm-quote {color: #090;}
+.cm-negative {color: #d44;}
+.cm-positive {color: #292;}
+.cm-header, .cm-strong {font-weight: bold;}
+.cm-em {font-style: italic;}
+.cm-link {text-decoration: underline;}
+.cm-strikethrough {text-decoration: line-through;}
+
 .cm-s-default .cm-keyword {color: #708;}
 .cm-s-default .cm-atom {color: #219;}
 .cm-s-default .cm-number {color: #164;}
@@ -115,20 +123,14 @@ div.CodeMirror-overwrite div.CodeMirror-cursor {}
 .cm-s-default .cm-bracket {color: #997;}
 .cm-s-default .cm-tag {color: #170;}
 .cm-s-default .cm-attribute {color: #00c;}
-.cm-s-default .cm-header {color: blue;}
-.cm-s-default .cm-quote {color: #090;}
 .cm-s-default .cm-hr {color: #999;}
 .cm-s-default .cm-link {color: #00c;}
 
-.cm-negative {color: #d44;}
-.cm-positive {color: #292;}
-.cm-header, .cm-strong {font-weight: bold;}
-.cm-em {font-style: italic;}
-.cm-link {text-decoration: underline;}
-
 .cm-s-default .cm-error {color: #f00;}
 .cm-invalidchar {color: #f00;}
 
+.CodeMirror-composing { border-bottom: 2px solid; }
+
 /* Default styles for common addons */
 
 div.CodeMirror span.CodeMirror-matchingbracket {color: #0f0;}
@@ -142,14 +144,13 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
    the editor. You probably shouldn't touch them. */
 
 .CodeMirror {
-  line-height: 1;
   position: relative;
   overflow: hidden;
   background: white;
-  color: black;
 }
 
 .CodeMirror-scroll {
+  overflow: scroll !important; /* Things will break if this is overridden */
   /* 30px is the magic margin used to hide the element's real scrollbars */
   /* See overflow: hidden in .CodeMirror */
   margin-bottom: -30px; margin-right: -30px;
@@ -157,18 +158,14 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
   height: 100%;
   outline: none; /* Prevent dragging from highlighting the element */
   position: relative;
-  -moz-box-sizing: content-box;
-  box-sizing: content-box;
 }
 .CodeMirror-sizer {
   position: relative;
   border-right: 30px solid transparent;
-  -moz-box-sizing: content-box;
-  box-sizing: content-box;
 }
 
 /* The fake, visible scrollbars. Used to force redraw during scrolling
-   before actuall scrolling happens, thus preventing shaking and
+   before actual scrolling happens, thus preventing shaking and
    flickering artifacts. */
 .CodeMirror-vscrollbar, .CodeMirror-hscrollbar, .CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler {
   position: absolute;
@@ -194,26 +191,38 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
 
 .CodeMirror-gutters {
   position: absolute; left: 0; top: 0;
-  padding-bottom: 30px;
   z-index: 3;
 }
 .CodeMirror-gutter {
   white-space: normal;
   height: 100%;
-  -moz-box-sizing: content-box;
-  box-sizing: content-box;
-  padding-bottom: 30px;
-  margin-bottom: -32px;
   display: inline-block;
+  margin-bottom: -30px;
   /* Hack to make IE7 behave */
   *zoom:1;
   *display:inline;
 }
+.CodeMirror-gutter-wrapper {
+  position: absolute;
+  z-index: 4;
+  background: none !important;
+  border: none !important;
+}
+.CodeMirror-gutter-background {
+  position: absolute;
+  top: 0; bottom: 0;
+  z-index: 4;
+}
 .CodeMirror-gutter-elt {
   position: absolute;
   cursor: default;
   z-index: 4;
 }
+.CodeMirror-gutter-wrapper {
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  user-select: none;
+}
 
 .CodeMirror-lines {
   cursor: text;
@@ -234,6 +243,7 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
   z-index: 2;
   position: relative;
   overflow: visible;
+  -webkit-tap-highlight-color: transparent;
 }
 .CodeMirror-wrap pre {
   word-wrap: break-word;
@@ -255,8 +265,18 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
 
 .CodeMirror-widget {}
 
-.CodeMirror-wrap .CodeMirror-scroll {
-  overflow-x: hidden;
+.CodeMirror-code {
+  outline: none;
+}
+
+/* Force content-box sizing for the elements where we expect it */
+.CodeMirror-scroll,
+.CodeMirror-sizer,
+.CodeMirror-gutter,
+.CodeMirror-gutters,
+.CodeMirror-linenumber {
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
 }
 
 .CodeMirror-measure {
@@ -266,19 +286,19 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
   overflow: hidden;
   visibility: hidden;
 }
-.CodeMirror-measure pre { position: static; }
 
-.CodeMirror div.CodeMirror-cursor {
-  position: absolute;
-  border-right: none;
-  width: 0;
-}
+.CodeMirror-cursor { position: absolute; }
+.CodeMirror-measure pre { position: static; }
 
 div.CodeMirror-cursors {
   visibility: hidden;
   position: relative;
   z-index: 3;
 }
+div.CodeMirror-dragcursors {
+  visibility: visible;
+}
+
 .CodeMirror-focused div.CodeMirror-cursors {
   visibility: visible;
 }
@@ -286,6 +306,8 @@ div.CodeMirror-cursors {
 .CodeMirror-selected { background: #d9d9d9; }
 .CodeMirror-focused .CodeMirror-selected { background: #d7d4f0; }
 .CodeMirror-crosshair { cursor: crosshair; }
+.CodeMirror-line::selection, .CodeMirror-line > span::selection, .CodeMirror-line > span > span::selection { background: #d7d4f0; }
+.CodeMirror-line::-moz-selection, .CodeMirror-line > span::-moz-selection, .CodeMirror-line > span > span::-moz-selection { background: #d7d4f0; }
 
 .cm-searching {
   background: #ffa;
@@ -305,5 +327,8 @@ div.CodeMirror-cursors {
   }
 }
 
+/* See issue #2901 */
+.cm-tab-wrap-hack:after { content: ''; }
+
 /* Help users use markselection to safely style text background */
 span.CodeMirror-selectedtext { background: none; }

lib/mergely.css

@@ -12,17 +12,19 @@
 .mergely-column { border: 1px solid #ccc; }
 .mergely-active { border: 1px solid #a3d1ff; }
 
+.mergely.a,.mergely.d,.mergely.c { color: #000; }
+
 .mergely.a.rhs.start { border-top: 1px solid #a3d1ff; }
 .mergely.a.lhs.start.end,
 .mergely.a.rhs.end { border-bottom: 1px solid #a3d1ff; }
 .mergely.a.rhs { background-color: #ddeeff; }
 .mergely.a.lhs.start.end.first { border-bottom: 0; border-top: 1px solid #a3d1ff; }
 
-.mergely.d.lhs { background-color: #edc0c0; }
+.mergely.d.lhs { background-color: #ffe9e9; }
 .mergely.d.lhs.end,
-.mergely.d.rhs.start.end { border-bottom: 1px solid #ff7f7f; }
-.mergely.d.rhs.start.end.first { border-bottom: 0; border-top: 1px solid #ff7f7f; }
-.mergely.d.lhs.start { border-top: 1px solid #ff7f7f; }
+.mergely.d.rhs.start.end { border-bottom: 1px solid #f8e8e8; }
+.mergely.d.rhs.start.end.first { border-bottom: 0; border-top: 1px solid #f8e8e8; }
+.mergely.d.lhs.start { border-top: 1px solid #f8e8e8; }
 
 .mergely.c.lhs,
 .mergely.c.rhs { background-color: #fafafa; }
@@ -32,4 +34,12 @@
 .mergely.c.rhs.end { border-bottom: 1px solid #a3a3a3; }
 
 .mergely.ch.a.rhs { background-color: #ddeeff; }
-.mergely.ch.d.lhs { background-color: #edc0c0; text-decoration: line-through; color: #888; }
+.mergely.ch.d.lhs { background-color: #ffe9e9; text-decoration: line-through; color: red !important; }
+
+.mergely.current.start { border-top: 1px solid #000 !important; }
+.mergely.current.end { border-bottom: 1px solid #000 !important; }
+.mergely.current.lhs.a.start.end,
+.mergely.current.rhs.d.start.end { border-top: 0 !important; }
+.mergely.current.CodeMirror-linenumber { color: #F9F9F9; font-weight: bold; background-color: #777; }
+.CodeMirror-linenumber { cursor: pointer; }
+.CodeMirror-code { color: #717171; }

lib/mergely.js

@@ -297,15 +297,15 @@ jQuery.extend(Mgly.diff.prototype, {
 	},
 	_optimize: function(ctx) {
 		var start = 0, end = 0;
-		while (start < ctx.length) {
-			while ((start < ctx.length) && (ctx.modified[start] == undefined || ctx.modified[start] == false)) {
+		while (start < ctx.codes.length) {
+			while ((start < ctx.codes.length) && (ctx.modified[start] == undefined || ctx.modified[start] == false)) {
 				start++;
 			}
 			end = start;
-			while ((end < ctx.length) && (ctx.modified[end] == true)) {
+			while ((end < ctx.codes.length) && (ctx.modified[end] == true)) {
 				end++;
 			}
-			if ((end < ctx.length) && (ctx.ctx[start] == ctx.codes[end])) {
+			if ((end < ctx.codes.length) && (ctx.codes[start] == ctx.codes[end])) {
 				ctx.modified[start] = false;
 				ctx.modified[end] = true;
 			}
@@ -496,7 +496,7 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 		if (direction == 'next') {
 			this._current_diff = Math.min(++this._current_diff, this.changes.length - 1);
 		}
-		else {
+		else if (direction == 'prev') {
 			this._current_diff = Math.max(--this._current_diff, 0);
 		}
 		this._scroll_to_change(this.changes[this._current_diff]);
@@ -539,10 +539,10 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 		if (this.settings.hasOwnProperty('sidebar')) {
 			// dynamically enable sidebars
 			if (this.settings.sidebar) {
-				jQuery(this.element).find('.mergely-margin').css({display: 'block'});
+				this.element.find('.mergely-margin').css({display: 'block'});
 			}
 			else {
-				jQuery(this.element).find('.mergely-margin').css({display: 'none'});
+				this.element.find('.mergely-margin').css({display: 'none'});
 			}
 		}
 		var le, re;
@@ -677,7 +677,12 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 		if (this.settings.rhs_margin != 'left') {
 			this.element.append(rmargin);
 		}
-		//codemirror
+
+		// get current diff border color
+		var color = $('<div style="display:none" class="mergely current start" />').appendTo('body').css('border-top-color');
+		this.current_diff_color = color;
+
+		// codemirror
 		var cmstyle = '#' + this.id + ' .CodeMirror-gutter-text { padding: 5px 0 0 0; }' +
 			'#' + this.id + ' .CodeMirror-lines pre, ' + '#' + this.id + ' .CodeMirror-gutter-text pre { line-height: 18px; }' +
 			'.CodeMirror-linewidget { overflow: hidden; };';
@@ -689,12 +694,12 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 		jQuery('<style type="text/css">' + cmstyle + '</style>').appendTo('head');
 
 		//bind
-		var rhstx = jQuery('#' + this.id + '-rhs').get(0);
+		var rhstx = this.element.find('#' + this.id + '-rhs').get(0);
 		if (!rhstx) {
 			console.error('rhs textarea not defined - Mergely not initialized properly');
 			return;
 		}
-		var lhstx = jQuery('#' + this.id + '-lhs').get(0);
+		var lhstx = this.element.find('#' + this.id + '-lhs').get(0);
 		if (!rhstx) {
 			console.error('lhs textarea not defined - Mergely not initialized properly');
 			return;
@@ -727,6 +732,38 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 			);
 			sz(true);
 		}
+
+		// scrollToDiff() from gutter
+		function gutterClicked(side, line, ev) {
+			// The "Merge left/right" buttons are also located in the gutter.
+			// Don't interfere with them:
+			if (ev.target && (jQuery(ev.target).closest('.merge-button').length > 0)) {
+				return;
+			}
+
+			// See if the user clicked the line number of a difference:
+			var i, change;
+			for (i = 0; i < this.changes.length; i++) {
+				change = this.changes[i];
+				if (line >= change[side+'-line-from'] && line <= change[side+'-line-to']) {
+					this._current_diff = i;
+					// I really don't like this here - something about gutterClick does not
+					// like mutating editor here.  Need to trigger the scroll to diff from
+					// a timeout.
+					setTimeout(function() { this.scrollToDiff(); }.bind(this), 10);
+					break;
+				}
+			}
+		}
+
+		this.editor[this.id + '-lhs'].on('gutterClick', function(cm, n, gutterClass, ev) {
+			gutterClicked.call(this, 'lhs', n, ev);
+		}.bind(this));
+
+		this.editor[this.id + '-rhs'].on('gutterClick', function(cm, n, gutterClass, ev) {
+			gutterClicked.call(this, 'rhs', n, ev);
+		}.bind(this));
+
 		//bind
 		var setv;
 		if (this.settings.lhs) {
@@ -744,23 +781,10 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 		var self = this;
 		var led = self.editor[self.id+'-lhs'];
 		var red = self.editor[self.id+'-rhs'];
-
-		var yref = led.getScrollerElement().offsetHeight * 0.5; // center between >0 and 1/2
-
 		// set cursors
 		led.setCursor(Math.max(change["lhs-line-from"],0), 0); // use led.getCursor().ch ?
 		red.setCursor(Math.max(change["rhs-line-from"],0), 0);
-
-		// using directly CodeMirror breaks canvas alignment
-		// var ly = led.charCoords({line: Math.max(change["lhs-line-from"],0), ch: 0}, "local").top;
-
-		// calculate scroll offset for current change. Warning: returns relative y position so we scroll to 0 first.
-		led.scrollTo(null, 0);
-		red.scrollTo(null, 0);
-		self._calculate_offsets(self.id+'-lhs', self.id+'-rhs', [change]);
-		led.scrollTo(null, Math.max(change["lhs-y-start"]-yref, 0));
-		red.scrollTo(null, Math.max(change["rhs-y-start"]-yref, 0));
-		// right pane should simply follows
+		led.scrollIntoView({line: change["lhs-line-to"]});
 	},
 
 	_scrolling: function(editor_name) {
@@ -921,7 +945,7 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 		this.trace('change', 'diff time', timer.stop());
 		this.changes = Mgly.DiffParser(d.normal_form());
 		this.trace('change', 'parse time', timer.stop());
-		if (this._current_diff === undefined) {
+		if (this._current_diff === undefined && this.changes.length) {
 			// go to first difference on start-up
 			this._current_diff = 0;
 			this._scroll_to_change(this.changes[0]);
@@ -989,7 +1013,7 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 		
 		// this is the distance from the top of the screen to the top of the 
 		// content of the first codemirror editor
-		var topnode = jQuery('#' + this.id + ' .CodeMirror-measure').first();
+		var topnode = this.element.find('.CodeMirror-measure').first();
 		var top_offset = topnode.offset().top - 4;
 		if(!top_offset) return false;
 		
@@ -1118,11 +1142,12 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 		return changes;
 	},
 	_markup_changes: function (editor_name1, editor_name2, changes) {
-		jQuery('.merge-button').remove(); // clear
+		this.element.find('.merge-button').remove(); //clear
 		
 		var self = this;
 		var led = this.editor[editor_name1];
 		var red = this.editor[editor_name2];
+		var current_diff = this._current_diff;
 
 		var timer = new Mgly.Timer();
 		led.operation(function() {
@@ -1137,6 +1162,12 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 				led.addLineClass(llf, 'background', 'start');
 				led.addLineClass(llt, 'background', 'end');
 				
+				if (current_diff == i) {
+					if (llf != llt) {
+						led.addLineClass(llf, 'background', 'current');
+					}
+					led.addLineClass(llt, 'background', 'current');
+				}
 				if (llf == 0 && llt == 0 && rlf == 0) {
 					led.addLineClass(llf, 'background', clazz.join(' '));
 					led.addLineClass(llf, 'background', 'first');
@@ -1182,7 +1213,13 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 				var clazz = ['mergely', 'rhs', change['op'], 'cid-' + i];
 				red.addLineClass(rlf, 'background', 'start');
 				red.addLineClass(rlt, 'background', 'end');
-				
+
+				if (current_diff == i) {
+					if (rlf != rlt) {
+						red.addLineClass(rlf, 'background', 'current');
+					}
+					red.addLineClass(rlt, 'background', 'current');
+				}
 				if (rlf == 0 && rlt == 0 && llf == 0) {
 					red.addLineClass(rlf, 'background', clazz.join(' '));
 					red.addLineClass(rlf, 'background', 'first');
@@ -1283,11 +1320,12 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 				self.chfns[self.id + '-rhs'].push(m[0].markText(m[1], m[2], m[3]));
 			}
 		});
+
 		this.trace('change', 'LCS markup time', timer.stop());
 		
 		// merge buttons
 		var ed = {lhs:led, rhs:red};
-		jQuery('.merge-button').on('click', function(ev){
+		this.element.find('.merge-button').on('click', function(ev){
 			// side of mouseenter
 			var side = 'rhs';
 			var oside = 'lhs';
@@ -1311,6 +1349,35 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 			self._merge_change(change, side, oside);
 			return false;
 		});
+
+		// gutter markup
+		var lhsLineNumbers = $('#mergely-lhs ~ .CodeMirror').find('.CodeMirror-linenumber');
+		var rhsLineNumbers = $('#mergely-rhs ~ .CodeMirror').find('.CodeMirror-linenumber');
+		rhsLineNumbers.removeClass('mergely current');
+		lhsLineNumbers.removeClass('mergely current');
+		for (var i = 0; i < changes.length; ++i) {
+			if (current_diff == i && change.op !== 'd') {
+				var change = changes[i];
+				var j, jf = change['rhs-line-from'], jt = change['rhs-line-to'] + 1;
+				for (j = jf; j < jt; j++) {
+					var n = (j + 1).toString();
+					rhsLineNumbers
+						.filter(function(i, node) { return $(node).text() === n; })
+					.addClass('mergely current');
+				}
+			}
+			if (current_diff == i && change.op !== 'a') {
+				var change = changes[i];
+				jf = change['lhs-line-from'], jt = change['lhs-line-to'] + 1;
+				for (j = jf; j < jt; j++) {
+					var n = (j + 1).toString();
+					lhsLineNumbers
+						.filter(function(i, node) { return $(node).text() === n; })
+					.addClass('mergely current');
+				}
+			}
+		}
+
 		this.trace('change', 'markup buttons time', timer.stop());
 	},
 	_merge_change :	function(change, side, oside) {
@@ -1370,8 +1437,8 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 		var gutter_height = jQuery(this.editor[editor_name1].getScrollerElement()).children(':first-child').height();
 		var dcanvas = document.getElementById(editor_name1 + '-' + editor_name2 + '-canvas');
 		if (dcanvas == undefined) throw 'Failed to find: ' + editor_name1 + '-' + editor_name2 + '-canvas';
-		var clhs = jQuery('#' + this.id + '-lhs-margin');
-		var crhs = jQuery('#' + this.id + '-rhs-margin');
+		var clhs = this.element.find('#' + this.id + '-lhs-margin');
+		var crhs = this.element.find('#' + this.id + '-rhs-margin');
 		return {
 			visible_page_height: visible_page_height,
 			gutter_height: gutter_height,
@@ -1402,7 +1469,7 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 		this.trace('draw', 'lhs-scroller-top', ex.lhs_scroller.scrollTop());
 		this.trace('draw', 'rhs-scroller-top', ex.rhs_scroller.scrollTop());
 		
-		jQuery.each(jQuery.find('#' + this.id + ' canvas'), function () {
+		jQuery.each(this.element.find('canvas'), function () {
 			jQuery(this).get(0).height = ex.visible_page_height;
 		});
 		
@@ -1424,6 +1491,10 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 		var vp = this._get_viewport(editor_name1, editor_name2);
 		for (var i = 0; i < changes.length; ++i) {
 			var change = changes[i];
+			var fill = this.settings.fgcolor[change['op']];
+			if (this._current_diff === i) {
+				fill = this.current_diff_color;
+			}
 
 			this.trace('draw', change);
 			// margin indicators
@@ -1434,14 +1505,14 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 			this.trace('draw', 'marker calculated', lhs_y_start, lhs_y_end, rhs_y_start, rhs_y_end);
 
 			ctx_lhs.beginPath();
-			ctx_lhs.fillStyle = this.settings.fgcolor[(this._current_diff==i?'c':'')+change['op']];
+			ctx_lhs.fillStyle = fill;
 			ctx_lhs.strokeStyle = '#000';
 			ctx_lhs.lineWidth = 0.5;
 			ctx_lhs.fillRect(1.5, lhs_y_start, 4.5, Math.max(lhs_y_end - lhs_y_start, 5));
 			ctx_lhs.strokeRect(1.5, lhs_y_start, 4.5, Math.max(lhs_y_end - lhs_y_start, 5));
 
 			ctx_rhs.beginPath();
-			ctx_rhs.fillStyle = this.settings.fgcolor[(this._current_diff==i?'c':'')+change['op']];
+			ctx_rhs.fillStyle = fill;
 			ctx_rhs.strokeStyle = '#000';
 			ctx_rhs.lineWidth = 0.5;
 			ctx_rhs.fillRect(1.5, rhs_y_start, 4.5, Math.max(rhs_y_end - rhs_y_start, 5));
@@ -1460,7 +1531,7 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 			
 			// draw left box
 			ctx.beginPath();
-			ctx.strokeStyle = this.settings.fgcolor[(this._current_diff==i?'c':'')+change['op']];
+			ctx.strokeStyle = fill;
 			ctx.lineWidth = (this._current_diff==i) ? 1.5 : 1;
 			
 			var rectWidth = this.draw_lhs_width;