[rhythmbox] play-queue: don't allow the queue to be removed

[Jonathan Matthew <jmatthew src gnome org>]

commit 1b69c9beec385fa847963960f9a819e0f0f80c6a
Author: Jonathan Matthew <jonathan d14n org>
Date:   Fri Aug 26 07:41:06 2016 +1000

    play-queue: don't allow the queue to be removed
    
    https://bugzilla.gnome.org/show_bug.cgi?id=770411

 sources/rb-play-queue-source.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/sources/rb-play-queue-source.c b/sources/rb-play-queue-source.c
index ec13f18..7c975e1 100644
--- a/sources/rb-play-queue-source.c
+++ b/sources/rb-play-queue-source.c
@@ -95,6 +95,7 @@ static void impl_show_entry_view_popup (RBPlaylistSource *source,
                                        gboolean over_entry);
 static void impl_save_contents_to_xml (RBPlaylistSource *source,
                                       xmlNodePtr node);
+static gboolean impl_can_remove (RBDisplayPage *page);
 
 static void queue_clear_action_cb (GSimpleAction *action, GVariant *parameters, gpointer data);
 static void queue_shuffle_action_cb (GSimpleAction *action, GVariant *parameters, gpointer data);
@@ -192,6 +193,7 @@ rb_play_queue_source_class_init (RBPlayQueueSourceClass *klass)
 {
        GObjectClass *object_class = G_OBJECT_CLASS (klass);
        RBSourceClass *source_class = RB_SOURCE_CLASS (klass);
+       RBDisplayPageClass *page_class = RB_DISPLAY_PAGE_CLASS (klass);
        RBPlaylistSourceClass *playlist_class = RB_PLAYLIST_SOURCE_CLASS (klass);
 
        object_class->constructed = rb_play_queue_source_constructed;
@@ -202,6 +204,8 @@ rb_play_queue_source_class_init (RBPlayQueueSourceClass *klass)
        source_class->can_add_to_queue = (RBSourceFeatureFunc) rb_false_function;
        source_class->can_rename = (RBSourceFeatureFunc) rb_false_function;
 
+       page_class->can_remove = impl_can_remove;
+
        playlist_class->show_entry_view_popup = impl_show_entry_view_popup;
        playlist_class->save_contents_to_xml = impl_save_contents_to_xml;
 
@@ -690,3 +694,9 @@ rb_play_queue_dbus_method_call (GDBusConnection *connection,
                                                       method_name);
        }
 }
+
+static gboolean
+impl_can_remove (RBDisplayPage *page)
+{
+       return FALSE;
+}