Re: [Vala] Overriding Gtk.Container.forall (...)

[Frederik <scumm_fredo gmx net>]

Yu Feng wrote:
> gtk_container_forall is loop over all the children (including the
> internal children), it invokes
> class->forall with the parameter including_internals = TRUE;
>
> To make it clear, gtk_container_foreach has to be mentioned.
> gtk_container_foreach invokes
> class->forall with including_internals = FALSE.

I see, that makes sense.

> I think vala's vapi generator is screwed by this strange situation:
> the virtual class->forall is ignored.
>
> I don't see any solution to the problem within the vala framework. Any
> ideas?

One solution could be to allow inside a vapi (only there) both a
virtual and a non-virtual definition for the same method name:

 virtual void forall (bool include_internals, Gtk.Callback callback);
 void forall (Gtk.Callback callback);

If Vala would see that there are two definitions it could automatically
choose the virtual one for overriding and the other one for invocation.
The vapi generator would have to be aware that virtual and non-virtual
signature may differ.


Regards,

Frederik