/*

* 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 slideshow engine API

 *

*/

#ifndef __CSHWSLIDESHOWENGINEIMPL_H__

#define __CSHWSLIDESHOWENGINEIMPL_H__

// INCLUDES

#include <e32std.h>

#include <e32base.h>

#include "shwslideshowengine.h"

#include "shweventobserver.h"

#include "shweventpublisherbase.h"

#include <alf/alfbrush.h>

#include <alf/alfdisplay.h>

// FORWARD DECLARATIONS

class MGlxMediaList;

class CGlxThumbnailContext;

class CGlxVisualListManager;

class MGlxVisualList;

class CShwPlaybackFactory;

class CShwEventRouter;

class CAlfEnv;

// CLASS DECLARATION

/**

 * CCShwSlideshowEngineImpl

 * 

 * @author Kimmo Hoikka

 * @lib shwslideshowengine.lib

 * @internal reviewed 07/06/2007 by Loughlin

 */

NONSHARABLE_CLASS( CShwSlideshowEngineImpl )

	: public CShwEventPublisherBase,

	public MShwEventObserver

	{

	public: // Constructors and destructor

		/**

		 * Constructor

		 * @param aObserver, observer of the engine.

		 */

		static CShwSlideshowEngineImpl* NewL( MShwEngineObserver& aObserver );

		/**

		 * Destructor.

		 */

		~CShwSlideshowEngineImpl();

	private:

		/**

		 * Constructor for performing 1st stage construction

		 * @param aObserver, observer of the engine.

		 */

		CShwSlideshowEngineImpl( MShwEngineObserver& aObserver );

		/**

		 * 2nd stage construction

		 */

		void ConstructL();

	public: // the API

		/// @ref CShwSlideshowEngine::StartL

		void StartL(

			CAlfEnv& aEnv, 

			CAlfDisplay& aDisplay, 

			MGlxMediaList& aItemsToShow,

			MShwMusicObserver& aMusicObserver,

			TSize aScreenSize );

		/// @ref CShwSlideshowEngine::NextItemL

		void NextItemL();

		/// @ref CShwSlideshowEngine::PreviousItemL

		void PreviousItemL();

		/// @ref CShwSlideshowEngine::PauseL

		void PauseL();

		/// @ref CShwSlideshowEngine::ResumeL

		void ResumeL();

		/// @ref CShwSlideshowEngine::ToggleUiControlsVisibiltyL

		void ToggleUiControlsVisibiltyL();

		/// @ref CShwSlideshowEngine::LSKPressedL

		void LSKPressedL();

		/// @ref CShwSlideshowEngine::State

		CShwSlideshowEngine::TShwState State() const;

		/// @ref CShwSlideshowEngine::AvailableEffectsL

		static void AvailableEffectsL( RArray<TShwEffectInfo>& aEffects );

		/// @ref CShwSlideshowEngine::VolumeUpL

		void VolumeUpL();

		/// @ref CShwSlideshowEngine::VolumeDownL

		void VolumeDownL();

	public: // From MShwEventObserver

		/// @ref MShwEventObserver::NotifyL

		void NotifyL( MShwEvent* aEvent );

	private:	// Implementation

		/// Ref: the observer

		MShwEngineObserver& iObserver;

		/// Own: the media list to play

		MGlxMediaList* iMediaList;

		/// Own: the visual list manager

		CGlxVisualListManager* iVisualListManager;

		/// Own: the visual list to play

		MGlxVisualList* iVisualList;

		/// Own: the factory that creates the event controllers

		CShwPlaybackFactory* iFactory;

		/// Own: the event controllers

		CShwEventRouter* iEventRouter;

		/// Own: state flag

		CShwSlideshowEngine::TShwState iState;

		/// Ref: The HUI display

		CAlfDisplay* iDisplay;

	};

#endif // __CSHWSLIDESHOWENGINEIMPL_H__