Nick Glencross wrote:
> Another odd problem is that the focus tabbing is broken after
> disposing a form which uses the DateChooserButton, and then opening
> another. You get an error:
>
> 415038 ERROR: qx.event.handler.EventHandler[59]: Failed to dispatch
> key event: TypeError - children has no properties at
> qx.event.handler.FocusHandler:294
>
> At the moment I'm seeing these symptoms in a large application, so
> haven't got any small test cases, but I'll work on some to demonstrate
> some of the later cases.
>
I now have a small code fragment for this too. First a small widget with
just a textfield and DateChooserButton.
qx.Class.define("test.widget",
{
extend : qx.ui.layout.HorizontalBoxLayout,
construct : function(tabindex_ref)
{
this.base(arguments);
this.setDimension ('auto', 'auto');
var date_field = new qx.ui.form.TextField;
this.add (date_field);
var datepicker = new qx.ui.component.DateChooserButton();
datepicker.setTargetWidget(date_field);
this.add (datepicker);
}
});
The main harness just instantiates the date picker once (ok), or twice
(not happy).
qx.Class.define("test.Application",
{
extend : qx.application.Gui,
members :
{
main : function(e)
{
this.base(arguments);
// Uncomment this next line to see problem when tabbing
// new test.widget().dispose();
new test.widget().addToDocument ();
}
}
});
When you trying tabbing to move the focus, the error 'children has no
properties' appears from the FocusHandler.
I hope that someone can help to shed some light on this. I suspect that
some widgets aren't unregistering themselves from the FocusHandler
correctly, and unfortunately it never seems to recover.
Nick
(p.s. If more appropriate, I can log bugs on these)
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