Daniel,
this is a browser issue. You cannot update a style and running a CPU
intensive method after it. The result is that the browser will update
the display after the execution of this method. A common workaround is
to execute the (processor intensive) method in a timeout e.g.
qx.client.Timer.once(...)
Sebastian
Daniel Haferkorn schrieb:
> Hello,
> In my application I have a few events that could take some time to be
> executed. during that time the user should not be allowed to click on
> any widgets and receive a visual feedback.
> For this I planned to place a transparent LayoutManager in front of
> every other object:
> blockPlane = new qx.ui.layout.CanvasLayout();
> blockPlane.addToDocument();
>
> I then change the cursor style to the wait cursor for that layout:
> blockPlane.setStyleProperty("cursor", "wait");
>
> and set the layout to a minimized size:
> blockPlane.set({ width:0, height:0 });
>
>
> A typical event listener looks like this:
> someButton.addEventListener( "execute", function intenseEvent(e) {
> blockPlane.set({ width:3000, height:3000 }); // maximize the plane
> //some methods and algorithms that take a long time to complete
> blockPlane.set({ width:0, height:0 }); // minimize the plane again
> });
>
> The problem is, when I set the width and height values manually, the
> plane behaves as it should, the cursor changes to the wait cursor and
> the widgets are no longer usable. But if the event is executed within
> the application, nothing of this happens. I already tried to call
> qx.ui.core.Widget.flushGlobalQueues(); after maximizing the plane, but
> this also doesn't help.
> Am I doing something wrong?
>
> Regards,
> Daniel Haferkorn
>
>
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