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Web page reloads on move/resize in firefox

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This is a migrated thread and some comments may be shown as answers.

Paul asked on 02 Nov 2010, 01:55 PM

Hi,
I'm using Q2 2010 SP2 ASP.NET AJAX controls and have noticed an issue with firefox. If I have a rad window that is pointing to say youtube and I start watching a video when I move or resize the radwindow the page gets reloaded and the video starts from the begining.

I have test this in Internet Explorer and although it seems to work there you can move and resize without the page reloading on the odd occassion it does reload. In firefox it's all the time.

I tested your demo Window - First look and in the google window I searched for youtube and then in you tube just selected any video. Waited for it to start playing then moved the radwindow and that also reloaded the page. Tested the same thing in IE and it worked could move and resize without the page being reloaded.

Could you please confirm if this is a bug? Is there any way to work round it.

Thanks

6 Answers, 1 is accepted

answered on 05 Nov 2010, 10:24 AM

Hi Paul,

Yes, we are familiar with this problem. It is not directly related to the RadWindow control (it can be reproduced with standard HTM as well) and there is a workaround, although we do not recommend it because it could cause unwanted side effects.
Still, if you want to test the workaround, please open a support ticket and send us a sample project that reproduced your setup. We will check it and send it back with the workaround applied.

All the best,
Georgi Tunev
the Telerik team

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answered on 06 Jan 2011, 12:50 PM

Hi Paul,

I just answered your support ticket and sent you the hack. It uses internal properties to change the visibility of the popup element and we don't guarantee that it would work in all scenarios and will not cause side effects.

Basically, the problem is related to any OBJECT (Flash / Silverlight) embedded on the page. To confirm this you can wrap an object in a DIV element and change the display of the DIV with javascript on button click. You will experience the same problem then. The problem will also occur when the DOM is modified, e.g when overflow is changed, etc.

The specific case with RadWindow is that the display of the popup element is being changed in order to correctly calculate the offset parent in all scenarios and in all browsers. In the zipped page, you can find the suggested workaround which will skip this step while the RadWindow is being resized and dragged. In order to skip the step, we rewrite the handle logic of the start and end client events of resizing and dragging. As I previously mentioned, this could lead to unwanted side effects - for example, if you load a movie from YouTube and resize / move the window, you will notice a "ghost" image that flashes briefly during that process - this happens because the popup element is not hidden anymore.

Best wishes,
Georgi Tunev
the Telerik team

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