--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/srsf/nssvasapi/nssvasdb/nssvasdbeventnotifier/inc/nssvascvasdbeventmonitor.h Wed Sep 01 12:29:17 2010 +0100
@@ -0,0 +1,149 @@
+/*
+* Copyright (c) 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: CVASDBMonitor class is an active object that is a wrapper around
+* the RDBNotifier class. Events from RDBNotifier are handled by
+* encapsulating them in a CNssVASDBEvent object and passing it to all
+* its observers. In addition to the events provided by RDBNotifier,
+* CVASDBMonitor also provides additional events when a entry is added,
+* changed or deleted from the VAS DB. CVASDBMonitor owns the list of
+* observers of the VAS DB.
+*
+*/
+
+
+#ifndef CNSSVASDBEVENTMONITOR_H
+#define CNSSVASDBEVENTMONITOR_H
+
+// INCLUDES
+#include <d32dbms.h>
+
+#include "nssvascoreconstant.h"
+#include "nssvascvasdbevent.h"
+#include "nssvasmvasdatabaseobserver.h"
+#include "nssvasctag.h"
+
+
+// CLASS DECLARATION
+
+/**
+* CNssVASDBEventMonitor is an active object responsible for observing VAS database changes
+* and notifying all registerted observers of the change.
+* @lib NssVASApi.lib
+* @since 2.8
+*/
+class CNssVASDBEventMonitor :public CActive
+ {
+ public: // Constructors and destructor
+
+ /**
+ * Two-phased constructor.
+ */
+ static CNssVASDBEventMonitor* NewL();
+
+ /**
+ * Destructor.
+ */
+ virtual ~CNssVASDBEventMonitor();
+
+ public: // New functions
+
+ /**
+ * Request to start monitoring the VAS DB
+ * @since 2.0
+ * @param void
+ * @return void
+ */
+ void StartMonitoring();
+
+ /**
+ * Method that adds an observer to the observer list
+ * @since 2.0
+ * @param aObserver to be added
+ * @return none
+ */
+ void AddObserverL(MNssVASDatabaseObserver* aObserver);
+
+ /**
+ * Method that removes an observer from the observer list.
+ * @since 2.0
+ * @param aObserver to be removed
+ * @return error code
+ */
+ TInt RemoveObserver(MNssVASDatabaseObserver* aObserver);
+
+
+ public: // Functions from base classes
+
+ /**
+ * From CActive, called by RunL of RDBNotifier
+ * @since 2.0
+ * @param void
+ * @return void
+ */
+ void RunL();
+
+ /**
+ * From CActive, cancel outstanding requests
+ * @since 2.0
+ * @param void
+ * @return void
+ */
+ void DoCancel();
+
+ /**
+ * handling of addional events ( tag added, tag deleted, tag changed)
+ * These events can be reported only when the events occur on the same
+ * thread as that of the observer (client monitoring the event).
+ * @since 2.0
+ * @param aEvent - VAS DB event type
+ * @param aTag - tag on which the event occured
+ * @return void
+ */
+ void HandleDatabaseEventL(CNssVASDBEvent::TVASDBEventType aEvent, CNssTag *aTag);
+
+ private:
+
+ /**
+ * C++ constructor.
+ */
+ CNssVASDBEventMonitor();
+
+ /**
+ * EPOC constructor
+ */
+ void ConstructL();
+
+ /**
+ * Called by RunL() to create an event object and
+ * call HandleDatabaseEvent() for all observers
+ * Handles Standard Symbian DBMS events
+ * @since 2.0
+ * @param aEvent - Symbian DBMS event
+ * @return void
+ */
+ void HandleDatabaseEventL(RDbNotifier::TEvent aEvent);
+
+
+ private: // Data
+
+ RDbs iDbSession;
+ RDbNamedDatabase iDatabase;
+ RDbNotifier iNotifier;
+ CArrayPtrFlat<MNssVASDatabaseObserver>* iObservers;
+
+ };
+
+#endif // CVASDBEVENTMONITOR_H
+
+// End of File