[gtk+/wip/action-helper] gtkactionhelper: disable widgets with unknown action name

[Lars Uebernickel <larsu src gnome org>]

commit 6ab8e1ad5881db4a917761b851f0900e9a62a72c
Author: Lars Uebernickel <lars uebernickel canonical com>
Date:   Sun Aug 12 23:10:54 2012 +0200

    gtkactionhelper: disable widgets with unknown action name

 gtk/gtkactionhelper.c |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkactionhelper.c b/gtk/gtkactionhelper.c
index eac1c62..f03f2f7 100644
--- a/gtk/gtkactionhelper.c
+++ b/gtk/gtkactionhelper.c
@@ -378,6 +378,21 @@ gtk_action_helper_new (GtkActionable *widget)
 
   helper->widget = GTK_WIDGET (widget);
 
+  if (helper->widget)
+    {
+      GParamSpec *pspec;
+
+      helper->enabled = gtk_widget_get_sensitive (GTK_WIDGET (helper->widget));
+
+      pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (helper->widget), "active");
+      if (pspec && G_PARAM_SPEC_VALUE_TYPE (pspec) == G_TYPE_BOOLEAN)
+        g_object_get (G_OBJECT (helper->widget), "active", &helper->active, NULL);
+
+      pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (helper->widget), "action-role");
+      if (pspec && G_PARAM_SPEC_VALUE_TYPE (pspec) == G_TYPE_UINT)
+        g_object_get (G_OBJECT (helper->widget), "action-role", &helper->role, NULL);
+    }
+
   helper->action_context = _gtk_widget_get_action_muxer (GTK_WIDGET (widget));
 
   return helper;
@@ -458,6 +473,10 @@ gtk_action_helper_set_action_name (GtkActionHelper *helper,
       if (state)
         g_variant_unref (state);
     }
+  else
+    {
+      helper->enabled = FALSE;
+    }
 
   /* Send the notifies for the properties that changed.
    *