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diff --git a/src/gtkactionobservable.h b/src/gtkactionobservable.h
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+/*
+ * Copyright © 2011 Canonical Limited
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * licence or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Ryan Lortie <desrt@desrt.ca>
+ */
+
+#ifndef __GTK_ACTION_OBSERVABLE_H__
+#define __GTK_ACTION_OBSERVABLE_H__
+
+#include "gtkactionobserver.h"
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_ACTION_OBSERVABLE (gtk_action_observable_get_type ())
+#define GTK_ACTION_OBSERVABLE(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
+ GTK_TYPE_ACTION_OBSERVABLE, GtkActionObservable))
+#define GTK_IS_ACTION_OBSERVABLE(inst) (G_TYPE_CHECK_INSTANCE_TYPE ((inst), \
+ GTK_TYPE_ACTION_OBSERVABLE))
+#define GTK_ACTION_OBSERVABLE_GET_IFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE ((inst), \
+ GTK_TYPE_ACTION_OBSERVABLE, \
+ GtkActionObservableInterface))
+
+typedef struct _GtkActionObservableInterface GtkActionObservableInterface;
+
+struct _GtkActionObservableInterface
+{
+ GTypeInterface g_iface;
+
+ void (* register_observer) (GtkActionObservable *observable,
+ const gchar *action_name,
+ GtkActionObserver *observer);
+ void (* unregister_observer) (GtkActionObservable *observable,
+ const gchar *action_name,
+ GtkActionObserver *observer);
+};
+
+GType gtk_action_observable_get_type (void);
+void gtk_action_observable_register_observer (GtkActionObservable *observable,
+ const gchar *action_name,
+ GtkActionObserver *observer);
+void gtk_action_observable_unregister_observer (GtkActionObservable *observable,
+ const gchar *action_name,
+ GtkActionObserver *observer);
+
+G_END_DECLS
+
+#endif /* __GTK_ACTION_OBSERVABLE_H__ */