X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Fundo-stack-observer.h;h=5bf405f7f290f210d3695c2e1d0d155b2ac80ea4;hb=9e8fe96d9bacc116eee7e4496cacbeab3ad22ab1;hp=cd17c467575ca2415c89d0fb8d5db2b78658c3fc;hpb=4ec52515516e3a6bf2fbc3ed01a7e179bde16d20;p=inkscape.git

diff --git a/src/undo-stack-observer.h b/src/undo-stack-observer.h
index cd17c4675..5bf405f7f 100644
--- a/src/undo-stack-observer.h
+++ b/src/undo-stack-observer.h
@@ -14,6 +14,8 @@
 #ifndef __UNDO_COMMIT_OBSERVER_H__
 #define __UNDO_COMMIT_OBSERVER_H__
 
+#include "gc-managed.h"
+
 namespace Inkscape {
 
 class Event;
@@ -32,7 +34,7 @@ class Event;
  * UndoStackObservers should not be used on their own.  Instead, they should be registered
  * with a CompositeUndoStackObserver.
  */
-class UndoStackObserver {
+class UndoStackObserver : public GC::Managed<> {
 public:
 	UndoStackObserver() { }
 	virtual ~UndoStackObserver() { }
@@ -57,6 +59,17 @@ public:
 	 * \param log Pointer to an Event describing the committed events.
 	 */
 	virtual void notifyUndoCommitEvent(Event* log) = 0;
+
+	/**
+	 * Triggered when the undo log is cleared.
+	 */
+	virtual void notifyClearUndoEvent() = 0;
+
+	/**
+	 * Triggered when the redo log is cleared.
+	 */
+	virtual void notifyClearRedoEvent() = 0;
+
 };
 
 }