--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/locationtriggering/ltcontainer/inc/lbttriggerchangeobserver.h	Tue Feb 02 01:06:48 2010 +0200
@@ -0,0 +1,78 @@
+/*
+* Copyright (c) 2006 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: Interface to notify clients about trigger change 
+* events
+*
+*/
+
+
+#ifndef M_TRIGGERCHANGEOBSERVER_H
+#define M_TRIGGERCHANGEOBSERVER_H
+
+
+#include <e32cmn.h>
+
+#include "lbtcontainer.h"
+
+/**
+ *  MLbtContainerChangeEventObserver is a an observer  
+ *  
+ *  @since S60 v4.0
+ */
+class MLbtContainerChangeEventObserver
+    {
+
+public:  // Interface methods
+
+	/**
+	 * 
+	 */
+	 enum TLbtContainerChangedAreaType
+	 	{
+	 	// None
+	 	ETypeUnKnown = 0x0000,
+	 	// Only Cicular triggers have changed
+	 	ETypeCircularTriggerChange = 0x0001,
+	 	// Only rectangular triggers have changed
+	 	ETypeRectangularTriggerChange = 0x0002,
+	 	// Only cellular triggers have changed
+	 	ETypeCellularTriggerChange = 0x0004,
+	 	// Hybrid triggers have changed
+	 	ETypeHybridTriggerChange = 0x0010,
+	 	// All the different type of triggers have changed
+	 	ETypeAll = 0xFFFF
+	 	};
+	 
+    /**
+     * The method that has to be implemented to obtain events when the trigger
+     * store is modified.
+     *
+     * @param[in] aTriggerIds aList of triggers that were changed. The ownership
+     * is NOT transferred to the client. The client will have to delete this after 
+     * processing the event.
+     * @param[in] aEventMask The type of changes on the triggers. This is a 
+     * bitmask of CLbtContainer::TLbtTriggerChangeEvent.
+     *
+     * @note To obtain the events, the client will have to set itself as an
+     * observer using CLbtContainer::SetChangeObserver()
+     * 
+     * @note The client should not block this method for a long time.
+     */
+    virtual void TriggerStoreChanged( RArray<TLbtTriggerId>& aTriggerIds,
+                                      TLbtTriggerEventMask aEventMask,
+                                      TLbtContainerChangedAreaType aAreaType,
+                                      RArray<TUid>& aManagerUids ) = 0;
+    };
+
+#endif      // M_TRIGGERCHANGEOBSERVER_H