Add IdoMenuItemFactory

It's implementing the GtkMenuItemFactory extension point (only available in
Ubuntu's version of gtk+). It doesn't create any menu items yet.

The extension point must be registered before calling gtk_menu_new_from_model()
with a menu model that references any of the custom menu items ido will
provide. Registering means the type must exist in the type system. This patch
adds an ido_init() which does that. Consumers of libido are required to call
this function from now on.

1 files changed, 60 insertions, 0 deletions

diff --git a/src/idomenuitemfactory.c b/src/idomenuitemfactory.c
new file mode 100644
index 0000000..3eb8049
--- /dev/null
+++ b/src/idomenuitemfactory.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2013 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3, as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranties of
+ * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *     Lars Uebernickel <lars.uebernickel@canonical.com>
+ */
+
+#include <gtk/gtk.h>
+
+#define IDO_TYPE_MENU_ITEM_FACTORY         (ido_menu_item_factory_get_type ())
+#define IDO_MENU_ITEM_FACTORY(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), IDO_TYPE_MENU_ITEM_FACTORY, IdoMenuItemFactory))
+#define IDO_IS_MENU_ITEM_FACTORY(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), IDO_TYPE_MENU_ITEM_FACTORY))
+
+typedef GObject      IdoMenuItemFactory;
+typedef GObjectClass IdoMenuItemFactoryClass;
+
+GType       ido_menu_item_factory_get_type (void);
+static void ido_menu_item_factory_interface_init (GtkMenuItemFactoryInterface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (IdoMenuItemFactory, ido_menu_item_factory, G_TYPE_OBJECT,
+  G_IMPLEMENT_INTERFACE (GTK_TYPE_MENU_ITEM_FACTORY, ido_menu_item_factory_interface_init)
+  g_io_extension_point_implement (GTK_MENU_ITEM_FACTORY_EXTENSION_POINT_NAME,
+                                  g_define_type_id, "ido", 0);)
+
+static GtkMenuItem *
+ido_menu_item_factory_create_menu_item (GtkMenuItemFactory *factory,
+                                        const gchar        *type,
+                                        GMenuItem          *menuitem,
+                                        GActionGroup       *actions)
+{
+  return NULL;
+}
+
+static void
+ido_menu_item_factory_class_init (IdoMenuItemFactoryClass *class)
+{
+}
+
+static void
+ido_menu_item_factory_interface_init (GtkMenuItemFactoryInterface *iface)
+{
+  iface->create_menu_item = ido_menu_item_factory_create_menu_item;
+}
+
+static void
+ido_menu_item_factory_init (IdoMenuItemFactory *factory)
+{
+}