--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/locationlandmarksrefappfors60/Inc/LandmarksDbEventHandler.h Tue Feb 02 00:16:03 2010 +0200
@@ -0,0 +1,109 @@
+/*
+* Copyright (c) 2004-2005 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:
+* See class description below
+*
+*/
+
+
+#ifndef __LANDMARKS_DB_EVENT_HANDLER_H__
+#define __LANDMARKS_DB_EVENT_HANDLER_H__
+
+
+#include "LandmarksDbObserver.h"
+#include <e32base.h>
+#include <EPos_Landmarks.h>
+
+
+class CPosLandmarkDatabase;
+class MLandmarksDbEventObserver;
+
+
+
+/**
+* In the Landmark reference application there is only one instance of
+* CLandmarksDbEventHandler. It is the only object observing the
+* default landmark database directly. Other objects that want to observe the
+* database must register to this object. When an event occurs this object
+* broadcasts it to all registered observers.
+*/
+class CLandmarksDbEventHandler : public CActive
+ {
+ public: // Constructors and destructor
+
+ /**
+ * C++ constructor.
+ *
+ * @param aDb the database to observer
+ */
+ CLandmarksDbEventHandler(
+ CPosLandmarkDatabase& aDb);
+
+ /**
+ * Destructor.
+ */
+ ~CLandmarksDbEventHandler();
+
+ public: // New functions
+
+ /**
+ * AddObserverL registers a db observer.
+ *
+ * @param aObserver the observer to register
+ */
+ void AddObserverL(MLandmarksDbObserver* aObserver);
+
+ protected: // from CActive
+
+ /**
+ * Handles an active object’s request completion event.
+ */
+ void RunL();
+
+ /**
+ * Implements cancellation of an outstanding request.
+ */
+ void DoCancel();
+
+ /**
+ * Handles a leave occurring in the request completion event
+ * handler RunL().
+ *
+ * @return KErrNone
+ */
+ TInt RunError(TInt aError);
+
+ private:
+
+ /**
+ * Starts observing of db enevs
+ */
+ void ObserveEvents();
+
+ private:
+
+ //! The database to observe
+ CPosLandmarkDatabase& iDb;
+
+ //! A db event to be reported
+ TPosLmEvent iEvent;
+
+ //! An array of registered observers
+ RPointerArray<MLandmarksDbObserver> iDbObservers;
+
+ };
+
+
+#endif // __LANDMARKS_DB_EVENT_HANDLER_H__
+