It does not really add much over the sensitive/insensitive rendering
that is already indicating which widget is mapped. At the same time,
set up signal handlers so we can update that when the widget changes.
Not only was the property list connecting to notify::bla for
each property individually, it was also leaking the signal
handlers when the selected object changed. Fix both.
When showing the objects in the tree, use the property name
as the name thats shown in the list. This makes it easier
to differentiate e.g. hadjustment and vadjustment in a
GtkScrolledWindow.
Add a tab that shows available signals for each object. For now,
we only show if each signal has handlers connected or now. More
functionality will be added later.
The list of toplevels also includes hidden combobox popups
and the like, so we have to be a little careful. To ensure
the right choice, we now pick the first visible window
that is not a GtkInspectorWindow.
Instead, we want to let GTK+ open a window whose life-cycle
it can control. We just ensure that all our types are registered
when the module is loaded, so GTK+ can find them.
The positioning of the highlight window was not reliable; instead
just use a after-handler for the draw signal, in the same way that
drag highlights are drawn by GTK+ itself.
And copy the code for grabbing a widget via pointer from testgtk;
that code is known to work.
Quoting the spec:
If the cascaded value of a property is the unset keyword,
then if it is an inherited property, this is treated as
inherit, and if it is not, this is treated as initial.
Spec in question:
http://dev.w3.org/csswg/css-cascade/
Also use unset in the reset-to-defaults.css we use to reset css in
reftests.
In the GTK_IMAGE_ICON_NAME case, instead of keeping around the icon_name,
create a GThemedIcon and use that. This way, we can reuse the code paths
for the GTK_IMAGE_GICON case.
We have to use the internal accessor to the visible flag, instead of
calling gtk_widget_set_visible(), from within the show() and hide()
implementations - otherwise we'll recurse.
https://bugzilla.gnome.org/show_bug.cgi?id=721069
