Hi Andrew,
On Friday 01 July 2011 00:30:18 Andrew Goldberg wrote:
> I am observing an unexpected behavior regarding applying different
> appearances to different instances of a custom widget.
>
> My code structure is basically:
>
> Card widget
> - icon child control
>
> Depending on certain properties of the Card, I would like to apply a
> different appearance to the icon child control. In the
> _createChildControlImpl function, I create the child control named
> "control" and then do control.setAppearance("..."), where the name of the
> appearance I pass depends on some property of the Card widget. Regardless
> of what appearance I assign this way, it seems that all Cards' icon child
> controls end up with the same appearance. Is this a feature or a bug?
It's a feature. Every child control automatically gets an appearance ID
assigned. So e.g. your core widget has the appearance "foo" and you create a
child control "bar". This would end up in the appearance ID "foo/bar" for the
child control.
See
http://manual.qooxdoo.org/1.4.x/pages/gui_toolkit/ui_develop.html#styling
for more details.
> The names of the appearances provided are "icon-white" and
> "icon-white-warning" --- do I need to use appearance selectors that
> include an appearance selector for the Card widget, like "card/icon-white"
> and "card/icon-white-warning"? I just assumed that if I am explicitly
> setting the appearance, then I could use arbitrary names.
If you use child controls the appearance IDs are set automatically. A solution
to your problem (assigning a different appearance for several instances) might
be "states.
http://manual.qooxdoo.org/1.4.x/pages/gui_toolkit/ui_appearance.html?#states
You can use the "addState" / "removeState" methods to customize the look of a
widget. Framework widgets like the button use states to react on hover,
pressed or disabled states.
If you add a state you can react on this state within your appearance theme.
Regards,
Alex
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