Fixed #148: option `autoResize` not working on IE in case of changing visibility of the Timeline container element

HISTORY.md

@@ -20,6 +20,8 @@ http://visjs.org
 - Fixed `className` of groups not being updated when changed.
 - Fixed the `id` field of a new item not correctly generated.
 - Fixed newly added item ignored when returning an other object instance.
+- Fixed option `autoResize` not working on IE in case of changing visibility
+  of the Timeline container element.
 
 
 ## 2014-08-29, version 3.3.0

lib/timeline/Core.js

@@ -684,10 +684,13 @@ Core.prototype._startAutoResize = function () {
 
     if (me.dom.root) {
       // check whether the frame is resized
-      if ((me.dom.root.clientWidth != me.props.lastWidth) ||
-        (me.dom.root.clientHeight != me.props.lastHeight)) {
-        me.props.lastWidth = me.dom.root.clientWidth;
-        me.props.lastHeight = me.dom.root.clientHeight;
+      // Note: we compare offsetWidth here, not clientWidth. For some reason,
+      // IE does not restore the clientWidth from 0 to the actual width after
+      // changing the timeline's container display style from none to visible
+      if ((me.dom.root.offsetWidth != me.props.lastWidth) ||
+        (me.dom.root.offsetHeight != me.props.lastHeight)) {
+        me.props.lastWidth = me.dom.root.offsetWidth;
+        me.props.lastHeight = me.dom.root.offsetHeight;
 
         me.emit('change');
       }