New changed signal.

2001-03-05  Christopher James Lahey  <clahey@ximian.com>

	* gal-view-collection.c, gal-view-collection.h
	(gal_view_collection_changed): New changed signal.

svn path=/trunk/; revision=8555

2 files changed, 47 insertions, 12 deletions

diff --git a/widgets/menus/gal-view-collection.c b/widgets/menus/gal-view-collection.c
index 6b110e2867..895b85c7c1 100644
--- a/widgets/menus/gal-view-collection.c
+++ b/widgets/menus/gal-view-collection.c
@@ -23,6 +23,7 @@ static GtkObjectClass *gal_view_collection_parent_class;
 
 enum {
 	DISPLAY_VIEW,
+	CHANGED,
 	LAST_SIGNAL
 };
 
@@ -47,6 +48,16 @@ gal_view_collection_display_view (GalViewCollection *collection,
 }
 
 static void
+gal_view_collection_changed (GalViewCollection *collection)
+{
+	g_return_if_fail (collection != NULL);
+	g_return_if_fail (GAL_IS_VIEW_COLLECTION (collection));
+
+	gtk_signal_emit (GTK_OBJECT (collection),
+			 gal_view_collection_signals [CHANGED]);
+}
+
+static void
 gal_view_collection_item_free (GalViewCollectionItem *item)
 {
 	g_free(item->id);
@@ -93,11 +104,20 @@ gal_view_collection_class_init (GtkObjectClass *object_class)
 				object_class->type,
 				GTK_SIGNAL_OFFSET (GalViewCollectionClass, display_view),
 				gtk_marshal_NONE__OBJECT,
-				GTK_TYPE_NONE, 1, GTK_TYPE_OBJECT);
+				GTK_TYPE_NONE, 1, GAL_VIEW_TYPE);
+
+	gal_view_collection_signals [CHANGED] =
+		gtk_signal_new ("changed",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (GalViewCollectionClass, changed),
+				gtk_marshal_NONE__NONE,
+				GTK_TYPE_NONE, 0);
 
 	gtk_object_class_add_signals (object_class, gal_view_collection_signals, LAST_SIGNAL);
 
-	klass->display_view = NULL;     
+	klass->display_view = NULL;
+	klass->changed      = NULL;
 }
 
 static void
@@ -197,6 +217,8 @@ view_changed (GalView *view,
 {
 	item->changed = TRUE;
 	item->ever_changed = TRUE;
+
+	gal_view_collection_changed(item->collection);
 }
 
 static GalViewCollectionItem *
@@ -214,6 +236,7 @@ load_single_file (GalViewCollection *collection,
 	item->title = e_xml_get_string_prop_by_name(node, "title");
 	item->filename = e_xml_get_string_prop_by_name(node, "filename");
 	item->type = e_xml_get_string_prop_by_name(node, "type");
+	item->collection = collection;
 	if (item->filename) {
 		GalViewFactory *factory;
 		GList *factories;
@@ -483,6 +506,7 @@ gal_view_collection_append                   (GalViewCollection *collection,
 	item->id = gal_view_generate_id(collection, view);
 	item->filename = g_strdup_printf("%s.galview", item->id);
 	item->view = view;
+	item->collection = collection;
 	gtk_object_ref(GTK_OBJECT(view));
 
 	gtk_signal_connect(GTK_OBJECT(item->view), "changed",
@@ -491,6 +515,8 @@ gal_view_collection_append                   (GalViewCollection *collection,
 	collection->view_data = g_renew(GalViewCollectionItem *, collection->view_data, collection->view_count + 1);
 	collection->view_data[collection->view_count] = item;
 	collection->view_count ++;
+
+	gal_view_collection_changed(collection);
 }
 
 void
@@ -509,6 +535,8 @@ gal_view_collection_delete_view              (GalViewCollection *collection,
 	} else {
 		gal_view_collection_item_free (item);
 	}
+
+	gal_view_collection_changed(collection);
 }
 
 void
@@ -527,6 +555,7 @@ gal_view_collection_copy_view                (GalViewCollection *collection,
 	item->id = gal_view_generate_id(collection, view);
 	item->filename = g_strdup_printf("%s.galview", item->id);
 	item->view = gal_view_clone(view);
+	item->collection = collection;
 
 	gtk_signal_connect(GTK_OBJECT(item->view), "changed",
 			   GTK_SIGNAL_FUNC(view_changed), item);
@@ -534,4 +563,6 @@ gal_view_collection_copy_view                (GalViewCollection *collection,
 	collection->view_data = g_renew(GalViewCollectionItem *, collection->view_data, collection->view_count + 1);
 	collection->view_data[collection->view_count] = item;
 	collection->view_count ++;
+
+	gal_view_collection_changed(collection);
 }
diff --git a/widgets/menus/gal-view-collection.h b/widgets/menus/gal-view-collection.h
index bfb790d0ae..82da6a2de6 100644
--- a/widgets/menus/gal-view-collection.h
+++ b/widgets/menus/gal-view-collection.h
@@ -16,16 +16,7 @@ extern "C" {
 #define GAL_IS_VIEW_COLLECTION(o)       (GTK_CHECK_TYPE ((o), GAL_VIEW_COLLECTION_TYPE))
 #define GAL_IS_VIEW_COLLECTION_CLASS(k) (GTK_CHECK_CLASS_TYPE ((k), GAL_VIEW_COLLECTION_TYPE))
 
-typedef struct {
-	GalView *view;
-	char *id;
-	gboolean changed;
-	gboolean ever_changed;
-	gboolean built_in;
-	char *filename;
-	char *title;
-	char *type;
-} GalViewCollectionItem;
+typedef struct GalViewCollectionItem GalViewCollectionItem;
 
 typedef struct {
 	GtkObject base;
@@ -49,8 +40,21 @@ typedef struct {
 	 */
 	void (*display_view) (GalViewCollection *collection,
 			      GalView    *view);
+	void (*changed)      (GalViewCollection *collection);
 } GalViewCollectionClass;
 
+struct GalViewCollectionItem {
+	GalView *view;
+	char *id;
+	gboolean changed;
+	gboolean ever_changed;
+	gboolean built_in;
+	char *filename;
+	char *title;
+	char *type;
+	GalViewCollection *collection;
+};
+
 /* Standard functions */
 GtkType                gal_view_collection_get_type                 (void);
 GalViewCollection     *gal_view_collection_new                      (void);