[rhythmbox] application: new function for adding accelerators for menu contents

[Jonathan Matthew <jmatthew src gnome org>]

commit dfcc4cf54e0fae8cccb202b1acbbdc34dce2a871
Author: Jonathan Matthew <jonathan d14n org>
Date:   Thu Apr 11 09:15:35 2013 +1000

    application: new function for adding accelerators for menu contents

 shell/rb-application.c |   63 ++++++++++++++++++++++++++++++++++++++++++++++++
 shell/rb-application.h |    1 +
 2 files changed, 64 insertions(+), 0 deletions(-)
---
diff --git a/shell/rb-application.c b/shell/rb-application.c
index d033675..5c5941b 100644
--- a/shell/rb-application.c
+++ b/shell/rb-application.c
@@ -825,3 +825,66 @@ rb_application_link_shared_menus (RBApplication *app, GMenu *menu)
                g_object_unref (iter);
        }
 }
+
+static void
+set_accelerator (RBApplication *app, GMenuModel *model, int item, gboolean enable)
+{
+       GMenuAttributeIter *iter;
+       GVariant *value;
+       GVariant *target = NULL;
+       const char *key;
+       const char *accel = NULL;
+       const char *action = NULL;
+
+       iter = g_menu_model_iterate_item_attributes (model, item);
+       while (g_menu_attribute_iter_get_next (iter, &key, &value)) {
+               if (g_str_equal (key, "action") && g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
+                       action = g_variant_get_string (value, NULL);
+               else if (g_str_equal (key, "accel") && g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
+                       accel = g_variant_get_string (value, NULL);
+               else if (g_str_equal (key, "target"))
+                       target = g_variant_ref (value);
+
+               g_variant_unref (value);
+       }
+       g_object_unref (iter);
+
+       if (accel && action) {
+               if (enable)
+                       gtk_application_add_accelerator (GTK_APPLICATION (app), accel, action, target);
+               else
+                       gtk_application_remove_accelerator (GTK_APPLICATION (app), action, target);
+       }
+
+       if (target)
+               g_variant_unref (target);
+}
+
+/**
+ * rb_application_set_menu_accelerators:
+ * @app: the #RBApplication
+ * @menu: a #GMenuModel for which to enable or disable accelerators
+ * @enable: %TRUE to enable accelerators, %FALSE to disable
+ *
+ * Enables or disables accelerators for items in @menu.
+ */
+void
+rb_application_set_menu_accelerators (RBApplication *app, GMenuModel *menu, gboolean enable)
+{
+       int i;
+
+       for (i = 0; i < g_menu_model_get_n_items (menu); i++) {
+               GMenuLinkIter *iter;
+               GMenuModel *more;
+               const char *key;
+
+               set_accelerator (app, menu, i, enable);
+
+               iter = g_menu_model_iterate_item_links (menu, i);
+               while (g_menu_link_iter_get_next (iter, &key, &more)) {
+                       rb_application_set_menu_accelerators (app, more, enable);
+                       g_object_unref (more);
+               }
+               g_object_unref (iter);
+       }
+}
diff --git a/shell/rb-application.h b/shell/rb-application.h
index 50f3e28..747652a 100644
--- a/shell/rb-application.h
+++ b/shell/rb-application.h
@@ -60,6 +60,7 @@ GApplication *        rb_application_new (void);
 int            rb_application_run (RBApplication *app, int argc, char **argv);
 
 void           rb_application_link_shared_menus (RBApplication *app, GMenu *menu);
+void           rb_application_set_menu_accelerators (RBApplication *app, GMenuModel *menu, gboolean enable);
 
 void           rb_application_add_shared_menu (RBApplication *app, const char *name, GMenuModel *menu);
 GMenuModel *   rb_application_get_shared_menu (RBApplication *app, const char *name);