/*

* Copyright (c) 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: Definition of the Data Source Task Class.   

*

*/

#ifndef _C_GLXDATASOURCETASK_H_

#define _C_GLXDATASOURCETASK_H_

// INCLUDES

#include <e32cmn.h>

#include <ecom/ecom.h>

#include "mglxdatasource.h"

// FORWARD DECLARATIONS

class CGlxRequest;

class CMPXMedia;

class CGlxDataSource;

// CONSTANTS

// CLASS DECLARATION

/**

 *  CGlxDataSourceTask class 

 *

 *  Data Source Request is the base class for executing requests.

 *	@ingroup collection_component_design

 *  @internal reviewed 11/07/2007 by Dave Schofield

 */

class CGlxDataSourceTask : 	public CBase

	{

public:

	IMPORT_C virtual ~CGlxDataSourceTask();

	IMPORT_C CGlxDataSourceTask(CGlxRequest* aRequest, MGlxDataSourceRequestObserver& aObserver, CGlxDataSource* aDataSource);

public:

	TBool ObserverMatch(MGlxDataSourceRequestObserver& aObserver);

public:

	virtual void ExecuteRequestL() = 0;

	virtual void CancelRequest() = 0;

	/**

	 * Called when request is completed sucessfully or due to an error.

	 * This is the default implementation that can be re-defined by 

	 * deriving classes if required.

	 * @param aError Error that occurred (if any)

	 */

    IMPORT_C virtual void HandleRequestComplete(TInt aError);

    IMPORT_C void CreateResponseL();

    TBool IsDataSourceNeeded() const;

protected:

	IMPORT_C virtual void ListToMediaL(const RArray<TGlxMediaId>& aList); /// @todo overloaded until don't need name hack

protected:

	CGlxRequest* iRequest;

	CMPXMedia* iResponse;

	CGlxDataSource* iDataSource; // not owned

	MGlxDataSourceRequestObserver* iObserver;

	TBool iCancelled;

	};

#endif //_C_GLXDATASOURCETASK_H_