In order to introduce test panels, which are a nice to have
feature before actually moving to working on the custom
widget on sidebar feature, add a way to override the panels
vtable and load whatever panels we might want.
We will allow test panels to be added, so the vtable must
be overridable. The first step into making it overridable
is exposing the actual vtable struct.
This reverts commit 31a8a99440.
This was meant for bgo#695885 which has stalled for a while, so this
feature has no in-tree user. This commit removes it for now, this can be
readded when users for it materialize.
https://bugzilla.gnome.org/show_bug.cgi?id=751597
Add a class method to CcPanel to get a GOptionGroup which will be added
to the main commandline parser. This gives panels the chance to have
commandline "--flags" in addition to the already available parameters.
This changes changes the way parameters are passed to panels: the first
entry in the GVariant array is always the a{sv} dictionary of
commandline flags, followed by the remaining free-form arguments.
https://bugzilla.gnome.org/show_bug.cgi?id=696054
By using a GVariant of type "av" we can potentially pass more structured
data to panels, which will become relevant with the ability to invoke
them by GAction-based DBus-activation introduced in the following patch.
https://bugzilla.gnome.org/show_bug.cgi?id=696054
Now that we don't allow or load external panels, using libgnome-menu is just
overengineering. We can get the same results with less code by keeping a static
list of function pointers.
This reduces the number of places one needs to patch to add a new panel.
Also, this way we avoid registering all types at startup, and if we want
we can switch to load panel desktop files in a separate thread.
https://bugzilla.gnome.org/show_bug.cgi?id=690165
