Hi Ralf,
your problem can be solved if you first deselect the item you want to remove.
To explain the current behaviour:
If you select an item after you removed the currently selected one, qooxdoo
adds two jobs to the state queue:
* remove the state "selected" from the current selected item
* add the state "selected" to the newly selected item
The problem is now that the item whose state "selected" should be removed not
exists anymore. That's the point when the error-message pops up. So simply
deselect the item before you remove it. That should do the job.
cheers,
Alex
On Wednesday 28 March 2007 Ralf Sternberg wrote:
> Hi,
>
> I get a JavaScript error after removing a currently selected TreeFolder
> item from a Tree (using the qx.ui.treefullcontrol classes). After the
> selected item has been removed, there is no item selected anymore. The
> error occurs when another item is selected thereafter:
>
> qx.manager.selection.TreeFullControlSelectionManager[231]: Setting
> property "leadItem" to "[object org.eclipse.rap.rwt.widgets.TreeItem]"
> failed with exception: TypeError - this._states has no properties
>
> This happens when the item is simply disposed of. I am not sure about
> the proper way of removing a child item from a Tree. I also tried this:
>
> var parent = item.getParentFolder();
> var index = parent.indexOf( item );
> parent.removeAt( index );
>
> but the index is always -1.
>
> However, even with removeAt( 0 ), an error occurs when the first item is
> currently selected and another item is selected afterwards:
>
> qx.ui.treefullcontrol.TreeFolder: Setting property "selected" to
> "false" failed with exception: TypeError - this._states has no
> properties
>
> Is there a way to remove a selected item properly?
>
> Thanks,
> Ralf
>
>
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