diff -r 2fe1408b6811 -r e1b950c65cb4 epoc32/include/app/calchangecallback.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/epoc32/include/app/calchangecallback.h	Wed Mar 31 12:27:01 2010 +0100
@@ -0,0 +1,172 @@
+// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
+// which accompanies this distribution, and is available
+// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#ifndef __CALCHANGECALLBACK_H__
+#define __CALCHANGECALLBACK_H__
+
+#include <calcommon.h>
+
+class TCalChangeEntry;
+
+class MCalChangeCallBack
+/** A call back class for observing changes in the model view.
+
+A client will not be notified of a change if it is the source of
+the change.
+
+@publishedAll
+@deprecated
+*/
+	{
+public:
+	/** Instance view change type
+	@publishedAll
+	@deprecated
+	*/
+	enum TChangeType
+		{
+		/**	Entries are added */
+		EChangeAdd,
+		/** Entries are deleted */
+		EChangeDelete,
+		/** Entries are modified */
+		EChangeModify,
+		/** Undefined entries */
+		EChangeUndefined,
+		/** Entries cause overflow error */
+		EChangeOverflowError
+		};
+
+	/** Instance view entry type
+	@publishedAll
+	@deprecated
+	*/
+	enum TChangeEntryType
+		{
+		/** Entry type is todo */
+		EChangeEntryTodo,
+		/** Entry type is event */
+		EChangeEntryEvent,
+		/** All entry types */
+		EChangeEntryAll
+		};
+	/** A call back function for change notification
+	@param aChangeEntryType Filters notifications to only notify about entries of this type (event/todo/all).
+
+	*/
+	virtual void CalChangeNotification(TChangeEntryType aChangeEntryType) = 0;
+	};
+
+/** A call back class for observing changes in the model view.
+
+The call back returns an array containing information about at least
+one change to the database. The information includes the type of change
+and the identity of the item being changed.
+
+A client will not be notified of a change if it is the source of
+the change.
+
+@publishedAll
+@released
+*/
+class MCalChangeCallBack2
+	{
+public:
+	/** Instance view change type
+	@publishedAll
+	@released
+	*/
+	enum TChangeType
+		{
+		/**	Entries are added */
+		EChangeAdd,
+		/** Entries are deleted */
+		EChangeDelete,
+		/** Entries are modified */
+		EChangeModify,
+		/** Undefined entries */
+		EChangeUndefined
+		};
+
+	/** Instance view entry type
+	@publishedAll
+	@released
+	*/
+	enum TChangeEntryType
+		{
+		/** Entry type is todo */
+		EChangeEntryTodo,
+		/** Entry type is event */
+		EChangeEntryEvent,
+		/** All entry types */
+		EChangeEntryAll
+		};
+	/** A call back function for change notification
+	@param aChangeItems  List of changes since the last notification.
+
+	*/
+	virtual void CalChangeNotification(RArray<TCalChangeEntry>& aChangeItems) = 0;
+	};
+
+/** Struct for storing change notification data.
+This contains the calendar local ID, the type of change and the entry type.
+
+The iChangeType will only be set to EChangeEntryTodo or EChangeEntryEvent
+values. EChangeEntryAll is provided for callback registration only.
+
+If iChangeType is EChangeUndefined or EChangeOverflowError, iEntryId and
+iEntryType are undefined and should not be used by clients.
+
+@publishedAll
+@released
+*/
+struct TCalChangeEntry
+	{
+	/** Local UID of the entry */
+	TCalLocalUid iEntryId;
+	/** Type of change to the entry */
+	MCalChangeCallBack2::TChangeType iChangeType;
+	/** Type of entry */
+	MCalChangeCallBack2::TChangeEntryType iEntryType;
+	};
+
+/** Class to encapsulate call back registration parameters.
+
+The type of entries, the date range and whether undated todos are included
+can be specified.
+
+@publishedAll
+@released
+*/
+class CCalChangeNotificationFilter
+	{
+public:
+	IMPORT_C static CCalChangeNotificationFilter* NewL(MCalChangeCallBack2::TChangeEntryType aChangeEntryType, TBool aIncludeUndatedTodos, const CalCommon::TCalTimeRange& aTimeRange);
+	IMPORT_C ~CCalChangeNotificationFilter();
+
+	MCalChangeCallBack2::TChangeEntryType ChangeEntryType() const;
+	TCalTime StartTime() const;
+	TCalTime EndTime() const;
+	TBool IncludeUndatedTodos() const;
+
+private:
+	CCalChangeNotificationFilter(MCalChangeCallBack2::TChangeEntryType aChangeEntryType, TBool aIncludeUndatedTodos, const CalCommon::TCalTimeRange& aTimeRange);
+
+	MCalChangeCallBack2::TChangeEntryType iChangeEntryType;
+	CalCommon::TCalTimeRange iTimeRange;
+	TBool iIncludeUndatedTodos;
+	};
+
+#endif // __CALCHANGECALLBACK_H__