/*

* Copyright (c) 2006-2009 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:  Monitors file creations, modifications and deletions.*

*/

#ifndef __FILEMONITORPLUGIN_H__

#define __FILEMONITORPLUGIN_H__

#include <e32base.h>

#include "monitorplugin.h"

#include "filemonitorao.h"

#include "processoriginmapperinterface.h"

class CFileMonitorPlugin : public CMonitorPlugin,

                           public MProcessOriginMapperInterface

  	{

	public:

		/**

		* Creates and constructs a new instance of CFileMonitorPlugin.

		*

		* @return A pointer to the new instance of CFileMonitorPlugin

		*/

		static CFileMonitorPlugin* NewL();

		/**

		* Destructor

		*/

		virtual ~CFileMonitorPlugin();

		/**

		* Starts monitoring file system for file creations, modifications and deletions

		* in the specified path.

		*

		* @param aObserver  All events are notified via the aObserver.

		* @param aMdEClient  A pointer to MdE client.

		* @param aCtxEngine  A pointer to context engine.

		* @param aPluginFactory  A pointer to harvester plugin factory.

		* @return ETrue if success, EFalse if not.

		*/

		TBool StartMonitoring( MMonitorPluginObserver& aObserver, CMdESession* aMdEClient, 

				CContextEngine* aCtxEngine, CHarvesterPluginFactory* aHarvesterPluginFactory );

		/**

		* Stops monitoring.

		*

		* @return ETrue if success, EFalse if not.

		*/

		TBool StopMonitoring();

		/**

		* Resumes paused monitoring.

		*

		* @param aObserver  All events are notified via the aObserver.

		* @param aMdEClient  A pointer to MdE client.

		* @param aCtxEngine  A pointer to context engine.

		* @param aPluginFactory  A pointer to harvester plugin factory.

		* @return ETrue if success, EFalse if not.

		*/

		TBool ResumeMonitoring( MMonitorPluginObserver& aObserver, CMdESession* aMdEClient,

				CContextEngine* aCtxEngine, CHarvesterPluginFactory* aHarvesterPluginFactory );

		/**

		* Pauses monitoring.

		*

		* @return ETrue if success, EFalse if not.

		*/

		TBool PauseMonitoring();

        /**

         * Add a process to the list.

         * From MProcessOriginMapperInterface.

         * @param aProcessUid  Uid of the process to add.

         * @param aOrigin      Origin to which this process will mapped to.

         */

        void RegisterProcessL( const TUid& aProcessId,

                               const TOrigin& aOrigin );

        /**

         * Remove a process from the list.

         * From MProcessOriginMapperInterface.

         * @param aProcessId  Uid of the process to remove.

         */

        void UnregisterProcessL( const TUid& aProcessId );

    private:

		/**

		* C++ constructor - not exported;

		* implicitly called from NewL()

		*/

		CFileMonitorPlugin();

		/**

		* 2nd phase construction, called by NewL()

		*/

		void ConstructL();

	private:

		/**

		* A pointer to CFileMonitorAO.

		*/

		CFileMonitorAO* iFileMonitor;

	};

#endif // __FILEMONITORPLUGIN_H__