Widgets (unlike Windows and Dialogs) returned by Gtk::Builder::get_widget*
start owned by the GtkBuilder object, the idea being that they will get
added to a container before the scope of the GtkBuilder object ends, and it
thus automatically gets destroyed.
But in the various ::create methods in pavucontrol, a pointer to the widget
gets returned, so that it can be added to a cointainer by the caller.
However as soon as the ::create method exits the GtkBuilder object owning
the widget, and thus also the widget gets destroyed, and we end up returning
free-ed memory.
This commit fixes this by making all ::create methods take a reference on
the widget before returning it, and having all the callers unreference the
widget after adding it to a container.
https://bugs.freedesktop.org/show_bug.cgi?id=83144https://bugzilla.redhat.com/show_bug.cgi?id=1133339
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This just shuffles around the streamwidget a bit. The RoleWidget child class is the
exception, so try and gear things around SinkInput/SourceOutput widgets more to
save repeating the same code too much.
This abandons the combo box approach an instead partially reverts to the popup.
We now display a suffix after the stream title saying " on <device>" or " from <device>"
where the <device> part looks like a hyperlink and, when clicked, shows the popup to change the device.
If there is only one device available, we suppress the whole thing and thus avoid confusion.
Hans de Goede