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wayland: Add MetaWaylandSurface::destroy signal

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There's places where it would be convenient to add listeners to this,
so add the signal. The signal is only emitted once during destruction,
it is convenient for the places where we want notifications at a time
the object is still alive, as opposed to weak refs which notify after
the fact.
This commit is contained in:
Carlos Garnacho 2015-10-22 14:07:52 +02:00
parent 5774875ab9
commit c28fc68df1
2 changed files with 33 additions and 0 deletions
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32
src/wayland/meta-wayland-surface.c
View File

@ -137,6 +137,13 @@ G_DEFINE_TYPE (MetaWaylandSurfaceRoleDND,
meta_wayland_surface_role_dnd,
META_TYPE_WAYLAND_SURFACE_ROLE);
enum {
SURFACE_DESTROY,
N_SURFACE_SIGNALS
};
guint surface_signals[N_SURFACE_SIGNALS] = { 0 };
static void
meta_wayland_surface_role_assigned (MetaWaylandSurfaceRole *surface_role);
@ -2670,6 +2677,20 @@ meta_wayland_surface_get_absolute_coordinates (MetaWaylandSurface *surface,
*y = v.y;
}
static void
meta_wayland_surface_dispose (GObject *object)
{
MetaWaylandSurface *surface = META_WAYLAND_SURFACE (object);
if (!surface->destroying)
{
g_signal_emit (object, surface_signals[SURFACE_DESTROY], 0);
surface->destroying = TRUE;
}
G_OBJECT_CLASS (meta_wayland_surface_parent_class)->dispose (object);
}
static void
meta_wayland_surface_init (MetaWaylandSurface *surface)
{
@ -2679,6 +2700,17 @@ meta_wayland_surface_init (MetaWaylandSurface *surface)
static void
meta_wayland_surface_class_init (MetaWaylandSurfaceClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = meta_wayland_surface_dispose;
surface_signals[SURFACE_DESTROY] =
g_signal_new ("destroy",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
0, NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void

1
src/wayland/meta-wayland-surface.h
View File

@ -198,6 +198,7 @@ struct _MetaWaylandSurface
MetaWaylandSerial acked_configure_serial;
gboolean has_set_geometry;
gboolean is_modal;
gboolean destroying;
/* xdg_popup */
struct {