Fixed #1214: items wrongly marked as dirty with every `rangechange` event

lib/timeline/Core.js

@@ -91,7 +91,7 @@ Core.prototype._create = function (container) {
   this.dom.rightContainer.appendChild(this.dom.shadowBottomRight);
 
   this.on('rangechange', function () {
-    this.redraw(); // this allows overriding the redraw method
+    this._redraw(); // this allows overriding the _redraw method
   }.bind(this));
   this.on('touch',       this._onTouch.bind(this));
   this.on('pan',         this._onDrag.bind(this));
@@ -316,9 +316,9 @@ Core.prototype.setOptions = function (options) {
 
   // override redraw with a throttled version
   if (!this._origRedraw) {
-    this._origRedraw = this.redraw.bind(this);
+    this._origRedraw = this._redraw.bind(this);
   }
-  this.redraw = util.throttle(this._origRedraw, this.options.throttleRedraw);
+  this._redraw = util.throttle(this._origRedraw, this.options.throttleRedraw);
 
   // redraw everything
   this._redraw();
@@ -448,7 +448,7 @@ Core.prototype.addCustomTime = function (time, id) {
 
   this.customTimes.push(customTime);
   this.components.push(customTime);
-  this.redraw();
+  this._redraw();
 
   return id;
 };