/*

 * Copyright (c) 2008-2009 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:    Grid view control class

 *

 */

#ifndef CGLXGRIDVIEWCONTROL_H

#define CGLXGRIDVIEWCONTROL_H

#include <coecntrl.h>

// Ganes observerers

#include <ganes/HgScrollBufferObserverIface.h>

#include <ganes/HgSelectionObserverIface.h>

#include <ganes/HgMarkingObserverIface.h>

// Photos Headers

#include <mglxmedialistprovider.h>

#include <glxmedialistiterator.h>                       // Interface for going through items in

#include <glxmedialistfactory.h>                        // MGlxMediaListFactory

#include <glxthumbnailcontext.h>

#include <glxuistd.h>

#include "glxgridvieweventobserver.h"

class CHgGrid;

class CGlxUiUtility;

class CGlxGridViewMLObserver;

class CGlxActiveMediaListRegistry;

class CGlxThumbnailContext;

class CGlxDRMUtility;

class CAknsBasicBackgroundControlContext;

class CGlxNavigationalState;

//class declaration

class CGlxGridViewContainer : 	public CCoeControl,

								public MHgScrollBufferObserver,

								public MHgSelectionObserver,

								public MHgMarkingObserver

	{

public:

	/**

	 * Two-phased constructor.

	 *

	 * @since 3.0

	 * @return Pointer to newly created object.

	 */

	/**

	 * Two-phased constructor.

	 *

	 * @since 3.0

	 * @return Pointer to newly created object.

	 */

	//destructor

	~CGlxGridViewContainer();

	TBool HandleViewCommandL(TInt aCommand);

protected: // from MHgScrollBufferObserver

	void Request(TInt aRequestStart, TInt aRequestEnd, THgScrollDirection aDirection);

	void Release(TInt aReleaseStart, TInt aReleaseEnd);

protected: // from MHgSelectionObserver

	void HandleSelectL( TInt aIndex );

	void HandleOpenL( TInt aIndex );

protected: // from MHgMarkingObserver

	void HandleMarkingL( TInt aIndex, TBool aMarked );

public: // From CCoeControl

	TTypeUid::Ptr MopSupplyObject(TTypeUid aId);

	TKeyResponse OfferKeyEventL(const TKeyEvent &aKeyEvent, TEventCode aType);

	//handle orientaion realted changes

	void HandleResourceChange(TInt aType);

private:

	/**

	 * C++ default constructor.

	 */

	/**

	 * By default Symbian 2nd phase constructor is private.

	 */

	void ConstructL();

	void RequestL(TInt aRequestStart, TInt aRequestEnd);

	//create grid

	void CreateGridL();

	/**

	 * Set grid thumbnail context with BlokyIterator to fetch

	 * grid thumbnails

	 */

	void SetGridThumbnailContextL();

	// Create HG Grid widget

	void CreateHgGridWidgetL();

	// Create an observer and pass MediaList and HGGrid objects

	void CreateGridMediaListObserverL();

	// Create Grid once again after returning from FS as No calls for handleItem added.

	void CreateGridAfterFSDeactivatedL();

	/**

	/**

	 * Handle Multiple marking

	 */

	void HandleMultipleMarkingL(TInt aIndex , TBool aMarked );

	/**

	 * Set the Icons

	 */

	void SetIconsL(TInt index);

	//handle enterkey realted events

	void HandleEnterKeyEventL(TInt aCommand);

	/**

	 * Checks the availability of relevant thumbnail(Quality or Speed) attribute

	 * @param aIndex Media index to check the thumbnail attribute

	 * @return ETrue if relevant thumbnail available 

	 *         EFalse if relevant thumbnail not available 

	 */ 

	TBool HasRelevantThumbnail(TInt aIndex);

private:

	//medialist

	MGlxMediaList* iMediaList;				    // MGlxMedialist , to Create MediaList

	//Drmutility

	CGlxUiUtility* iUiUtility;

	//No of visible items in a page/view

	TInt  iItemsPerPage;

	// HG  Grid instance

	CHgGrid* iHgGrid;

	// Medialist observer for Grid view

	CGlxGridViewMLObserver* iGlxGridMLObserver;

	/// Active media list registry stores the pointer to the active media list

	/// Allows UPnP to know when list has changed

	CGlxActiveMediaListRegistry* iActiveMediaListRegistry;

	// Thumbnail context

	CGlxThumbnailContext* iThumbnailContext;

	// Iterators for Grid and FS

	TGlxFromManualIndexBlockyIterator iBlockyIterator;

	// Grid Icon size from FS view

	TSize iGridIconSize;

	// Bool to check backward navigation

	TBool iBackwardActivation;

	// Provides DRM related functionality

	CGlxDRMUtility* iDRMUtility;

	// Background context for the themes to be used in MopSupplyObject

	CAknsBasicBackgroundControlContext* iBgContext; //Own

	//Grid Thumbnail Attribs

	TMPXAttribute iQualityTnAttrib;

	TMPXAttribute iSpeedTnAttrib;

	// Making the default FSActivation as false

	TBool iFullscreenViewActivated;

	// Navigational state need to be changed while launching fullscreen

	CGlxNavigationalState* iNavigationalstate;

	// making the default mode of marking as false

	TBool iMultipleMarkingActive ;

	//flag to prevent call to HandleOpen( ) on multiple tap for video

	TBool iIsFSVideoViewActivating;

	//observer

	MGlxGridEventObserver& 	iGlxGridViewObserver;

	};

#endif // CGLXGRIDVIEWCONTROL_H