[totem] main: Cancel thumbnailing on destroy

[Bastien Nocera <hadess src gnome org>]

commit 605005d657b3df0847f9841871cdef3524b08cb5
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Nov 25 16:42:41 2014 +0100

    main: Cancel thumbnailing on destroy
    
    Stop thumbnailing when TotemGrilo object is destroyed.

 src/totem-grilo.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/src/totem-grilo.c b/src/totem-grilo.c
index ba126c7..b5d3570 100644
--- a/src/totem-grilo.c
+++ b/src/totem-grilo.c
@@ -116,6 +116,8 @@ struct _TotemGriloPrivate {
        /* Selection toolbar */
        GtkWidget *selection_bar;
        GtkWidget *selection_revealer;
+
+       GCancellable *thumbnail_cancellable;
 };
 
 enum {
@@ -436,8 +438,7 @@ set_thumbnail_async (TotemGrilo   *self,
        thumb_data->model = g_object_ref (model);
        thumb_data->reference = gtk_tree_row_reference_new (model, path);
 
-       //FIXME cancellable?
-       totem_grilo_get_thumbnail (object, NULL, get_thumbnail_cb, thumb_data);
+       totem_grilo_get_thumbnail (object, self->priv->thumbnail_cancellable, get_thumbnail_cb, thumb_data);
 }
 
 static gboolean
@@ -2444,6 +2445,9 @@ totem_grilo_finalize (GObject *object)
                self->priv->thumbnail_update_id = 0;
        }
 
+       g_cancellable_cancel (self->priv->thumbnail_cancellable);
+       g_clear_object (&self->priv->thumbnail_cancellable);
+
        registry = grl_registry_get_default ();
        g_signal_handlers_disconnect_by_func (registry, source_added_cb, self);
        g_signal_handlers_disconnect_by_func (registry, source_removed_cb, self);
@@ -2724,6 +2728,7 @@ totem_grilo_init (TotemGrilo *self)
        self->priv = totem_grilo_get_instance_private (self);
        priv = self->priv;
 
+       priv->thumbnail_cancellable = g_cancellable_new ();
        priv->metadata_keys = grl_metadata_key_list_new (GRL_METADATA_KEY_ARTIST,
                                                         GRL_METADATA_KEY_AUTHOR,
                                                         GRL_METADATA_KEY_DURATION,