Hi,
Unfortunaltely I cannot test in 1.5
We've just upgraded to 1.4.1 and another upgrade would take too much time now.
I did implement a workaround that fixed this issue for us. Maybe that make
sense to you?
After creating the combo and adding it to the parent, I added the following
piece of code. In comment I explained what it solves. Can you confirm this
could be the issue?
var result = new qx.ui.form.ComboBox();
....
var popup = result.getChildControl("popup");
// When the combobox's popup contains a lot of items
// the first time it is shown/built takes some time.
// In qx.ui.popup.Popup.show() the popup will be automatically
// added to the application's root as some workaround for a bug (see Popup.js
for details).
// We do this here to prevent the popup from being shown at screen coordinates
(0, 0) before
// moving it to the right place.
if (popup.getLayoutParent() == null) {
popup.moveTo(-1000, -1000); // make sure it is not visible
qx.core.Init.getApplication().getRoot().add(popup);
}
Best regards,
Jeroen
-----Original Message-----
From: Tristan Koch [mailto:[email protected]]
Sent: vrijdag 9 september 2011 3:59 PM
To: qooxdoo Development
Subject: Re: [qooxdoo-devel] placement mode and comboboxes with many items
Hi,
I believe I've seen this once or twice, but I have never been able to reproduce
it reliably. Also, can you check in 1.5?
Tristan
Am 31.08.2011 um 17:33 schrieb Jeroen Smit:
> Hi,
>
> I noticed that when I have a combobox with many items in it (e.g. more than a
> couple of hundred) when the dropdown list opens it is shown in the top left
> coordinate of my application for a fraction of a second before it is shown in
> the correct place (i.e. just below the combobox). After some experiments it
> seems to have to do with the placement mode. Has anyone ever seen this before?
> Met vriendelijke groet,
> Kind regards,
>
> Jeroen Smit
> Expert Software Engineer
>
> ORTEC | Groningenweg 6k | PO Box 490 | 2800 AL Gouda | The Netherlands
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