--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mmuifw_plat/alf_widgetmodel_api/inc/alf/ialfmodelchangeobserver.h Wed Sep 01 12:23:18 2010 +0100
@@ -0,0 +1,89 @@
+/*
+* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: This interface defines a generic data type
+*
+*/
+
+
+#ifndef I_ALFMODELCHANGEOBSERVER_H
+#define I_ALFMODELCHANGEOBSERVER_H
+
+//INCLUDES
+
+namespace osncore
+ {
+template <class T> class AlfPtrVector;
+ }
+using namespace osncore;
+
+namespace Alf
+ {
+
+/* Forward declarations*/
+class IAlfModel;
+class AlfModelOperation;
+
+/**
+* An interface for observing the changes in the model.
+* @lib hitchcockwidgetmodel.lib
+* @since S60 ?S60_version
+* @status Draft
+*/
+class IAlfModelChangeObserver
+ {
+public:
+ /** Virtual destructor.*/
+ virtual ~IAlfModelChangeObserver() {}
+
+ /**
+ * Notify the observer that the model has changed.
+ *
+ * @param aModel The new model.
+ * @since S60 ?S60_version
+ */
+ virtual void modelChanged( IAlfModel& aModel ) = 0;
+
+ /**
+ * Notify the observers that a number of change operations
+ * are about to be performed on the model.
+ *
+ * @param aArrayOfOperation An Array containing the operations performed on the model.
+ * @since S60 ?S60_version
+ */
+ virtual void dataChanging( const AlfPtrVector<AlfModelOperation>& aArrayOfOperation ) = 0;
+
+ /**
+ * Notify the observers that a change operation
+ * is about to be performed on the model.
+ *
+ * @param aOperation An operation performed on the model.
+ * @since S60 ?S60_version
+ */
+ virtual void dataChanging( const AlfModelOperation& aOperation ) = 0;
+
+ /**
+ * Notify the observers that the data of the model has been changed.
+ * This is called automatically after any DataChangingL() call.
+ *
+ * @since S60 ?S60_version
+ */
+ virtual void dataChanged() = 0;
+ };
+
+
+ } // namespace Alf
+
+#endif // I_ALFMODELCHANGEOBSERVER_H
+
+// End of File