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, 36 insertions, 0 deletions

diff --git a/src/libido.c b/src/libido.c
new file mode 100644
index 0000000..0c90213
--- /dev/null
+++ b/src/libido.c
@@ -0,0 +1,36 @@
+/*
+ * 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 <gio/gio.h>
+
+/**
+ * ido_init:
+ *
+ * Initializes ido. It has to be called after gtk_init(), but before any
+ * other calls into ido are made.
+ */
+void
+ido_init (void)
+{
+  GType ido_menu_item_factory_get_type (void);
+
+  /* make sure this extension point is registered so that gtk calls it
+   * when finding custom menu items */
+  g_type_ensure (ido_menu_item_factory_get_type ());
+}