[cheese] Update sensitivity of "move all to trash"

[Bastien Nocera <hadess src gnome org>]

commit 2a16851e43cac594bf8983221411e19aa00082cd
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Feb 9 15:46:59 2010 +0000

    Update sensitivity of "move all to trash"
    
    https://bugzilla.gnome.org/show_bug.cgi?id=592663

 src/cheese-ui.h     |    7 +++++--
 src/cheese-window.c |   48 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+), 2 deletions(-)
---
diff --git a/src/cheese-ui.h b/src/cheese-ui.h
index 0068b73..c9c76bb 100644
--- a/src/cheese-ui.h
+++ b/src/cheese-ui.h
@@ -79,12 +79,15 @@ const GtkActionEntry action_entries_file[] = {
    G_CALLBACK (cheese_cmd_file_save_as)},
   {"MoveToTrash", "user-trash",      N_("Move to _Trash"), "Delete",        NULL,
    G_CALLBACK (cheese_cmd_file_move_to_trash)},
-  {"RemoveAll",    NULL,             N_("Move All to Trash"), NULL, NULL,
-   G_CALLBACK (cheese_cmd_file_move_all_to_trash)},
   {"Delete",      NULL,              N_("Delete"),         "<shift>Delete", NULL,
    G_CALLBACK (cheese_cmd_file_delete)},
 };
 
+static const GtkActionEntry action_entries_trash[] = {
+  {"RemoveAll",    NULL,             N_("Move All to Trash"), NULL, NULL,
+   G_CALLBACK (cheese_cmd_file_move_all_to_trash)},
+};
+
 G_END_DECLS
 
 #endif /* __CHEESE_UI_H__ */
diff --git a/src/cheese-window.c b/src/cheese-window.c
index e4d06fa..e1c672e 100644
--- a/src/cheese-window.c
+++ b/src/cheese-window.c
@@ -164,6 +164,7 @@ typedef struct
   GtkActionGroup *actions_burst;
   GtkActionGroup *actions_fullscreen;
   GtkActionGroup *actions_wide_mode;
+  GtkActionGroup *actions_trash;
 
   GtkUIManager *ui_manager;
 
@@ -479,6 +480,40 @@ cheese_window_selection_changed_cb (GtkIconView  *iconview,
   }
 }
 
+static void
+cheese_window_thumbnails_changed (GtkTreeModel *model,
+                                  CheeseWindow *cheese_window)
+{
+  CheeseWindowPrivate *priv = CHEESE_WINDOW_GET_PRIVATE (cheese_window);
+  GtkTreeIter iter;
+
+  if (gtk_tree_model_get_iter_first (model, &iter))
+  {
+    gtk_action_group_set_sensitive (priv->actions_trash, TRUE);
+  }
+  else
+  {
+    gtk_action_group_set_sensitive (priv->actions_trash, FALSE);
+  }
+}
+
+static void
+cheese_window_thumbnail_inserted (GtkTreeModel *model,
+                                  GtkTreePath  *path,
+                                  GtkTreeIter  *iter,
+                                  CheeseWindow *cheese_window)
+{
+  cheese_window_thumbnails_changed (model, cheese_window);
+}
+
+static void
+cheese_window_thumbnail_deleted (GtkTreeModel *model,
+                                 GtkTreePath  *path,
+                                 CheeseWindow *cheese_window)
+{
+  cheese_window_thumbnails_changed (model, cheese_window);
+}
+
 static gboolean
 cheese_window_button_press_event_cb (GtkWidget *iconview, GdkEventButton *event,
                                      CheeseWindow *cheese_window)
@@ -1085,6 +1120,11 @@ setup_menubar_and_actions (CheeseWindow *cheese_window)
                                                        G_N_ELEMENTS (action_entries_file));
   gtk_action_group_set_sensitive (priv->actions_file, FALSE);
 
+  priv->actions_trash = cheese_window_action_group_new (cheese_window,
+                                                        "ActionsTrash",
+                                                        action_entries_trash,
+                                                        G_N_ELEMENTS (action_entries_trash));
+
   priv->actions_photo = cheese_window_action_group_new (cheese_window,
                                                         "ActionsPhoto",
                                                         action_entries_photo,
@@ -1253,6 +1293,13 @@ cheese_window_init (CheeseWindow *cheese_window)
   g_signal_connect (priv->thumb_view, "button_press_event",
                     G_CALLBACK (cheese_window_button_press_event_cb), cheese_window);
 
+  g_signal_connect (gtk_icon_view_get_model (GTK_ICON_VIEW (priv->thumb_view)), "row-inserted",
+                    G_CALLBACK (cheese_window_thumbnail_inserted), cheese_window);
+  g_signal_connect (gtk_icon_view_get_model (GTK_ICON_VIEW (priv->thumb_view)), "row-deleted",
+                    G_CALLBACK (cheese_window_thumbnail_deleted), cheese_window);
+
+  cheese_window_thumbnails_changed (gtk_icon_view_get_model (GTK_ICON_VIEW (priv->thumb_view)), cheese_window);
+
   cheese_window_set_mode (cheese_window, CAMERA_MODE_PHOTO);
 }
 
@@ -1331,6 +1378,7 @@ cheese_window_finalize (GObject *object)
   g_object_unref (priv->actions_video);
   g_object_unref (priv->actions_burst);
   g_object_unref (priv->actions_fullscreen);
+  g_object_unref (priv->actions_trash);
 
   if (G_OBJECT_CLASS (cheese_window_parent_class)->finalize)
     G_OBJECT_CLASS (cheese_window_parent_class)->finalize (object);