/*

* Copyright (c) 2007-2008 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:    The view control for the slideshow

 *

*/

#ifndef __CSHWVIEWCONTROL_H__

#define __CSHWVIEWCONTROL_H__

// INCLUDES

#include <e32std.h>

#include <e32base.h>

#include "shweventobserver.h"

#include "shweventpublisherbase.h"

// FORWARD DECLARATIONS

class MGlxMediaList;

// CLASS DECLARATION

/**

 * CShwViewControl

 * 

 * @author Kimmo Hoikka

 * @lib shwslideshowengine.lib

 * @internal reviewed 07/06/2007 by Loughlin

 */

NONSHARABLE_CLASS( CShwViewControl )

	: public CShwEventPublisherBase, public MShwEventObserver

	{

	public: // Constructors and destructor

		/**

		 * Constructor.

		 * @param aList, the list that is shown in slideshow

		 * @param aTransitionDuration, the duration for transition in milliseconds

		 * @param aViewDuration, the duration for view in milliseconds

		 */

		static CShwViewControl* NewL( 

			MGlxMediaList& aList, TInt aTransitionDuration, TInt aViewDuration );

		/**

		 * Destructor.

		 */

		~CShwViewControl();

	private:

		/**

		 * @param aList, the list that is shown in slideshow

		 * Constructor

		 */

		CShwViewControl( MGlxMediaList& aList );

		/**

		 * 2nd stage constructor

		 */

		void ConstructL();

	public: // From MShwEventObserver

		/// @ref MShwEventObserver::NotifyL

		void NotifyL( MShwEvent* aEvent );

	private: // Implementation

        /// Check if state allows to send start view and send it

	    void SendStartViewL();

        /// Check if state allows to send start transition and send it

	    void CheckAndSendStartTransitionL();

        /// Ref: the medialist

        MGlxMediaList& iList;

		/// Own: Transition duration

		TInt iTransitionDuration;

		/// Own: View duration

		TInt iViewDuration;

		/// Own: Flag to tell whether we received ready to start view

		TBool iReadyToViewReceived;

		/// Own: Flag to tell whether we received transition ready

		TBool iTransitionReadyReceived;

		/// Own: Flag to tell whether we received ready to advance

		TBool iReadyToAdvanceReceived;

		/// Own: Flag to tell whether we received timer beat

		TBool iTimerReceived;

		/// Own: Flag to tell that user navigated during pause

		TBool iUserNavigated;

		/// Own: Flag set to ETrue when paused, EFalse when playing

		TBool iPaused;

		/// Own: Flag to tell if user navigated while paused

		TBool iUserNavigatedWhilePaused;

	};

#endif // __CSHWVIEWCONTROL_H__