/*

* Copyright (c) 2002-2006 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: 

*     This class defines the data model interface for CVRStateInfoPanel.

*

*/

#ifndef __MVRSTATEINFOMODEL_H__

#define __MVRSTATEINFOMODEL_H__

// INCLUDES

#include <AknLayoutDef.h>

// FORWARD DECLARATIONS

class MVRObserver;

class MVRStateInfoObserver;

// CLASS DEFINITION

/**

* This class defines the data model interface for CVRStateInfoPanel.

**/

class MVRStateInfoModel 

	{

	public: // new methods

		/**

		* Returns the length of the current memo

		* @return The duration in microseconds.

		*/

		virtual TTimeIntervalMicroSeconds Duration() const = 0;

		/**

		* Returns the playing or recording position of the current memo.

		* @return The position in microseconds.

		*/

		virtual TTimeIntervalMicroSeconds Position() const = 0;

		/**

		* Returns the text content for a label.

		* @param aName Returned text is placed in this descriptor

		* @param aLabelIndex Label identifier (>=0)

		*/

		virtual void GetLabel( TDes& aName, TInt aLabelIndex ) const = 0;

		/**

		* Returns the resource id for a label.

		* @param aLabelIndex Label identifier (>=0)

		* @return The resource id for the specified label

		*/

		virtual TInt ResourceIdForLabel( TInt aLabelIndex, TAknLayoutId aLayout ) const = 0;

		/**

		* Registers an observer for receiving

		* update notifications from this interface.

		* @param aObserver The observer object.

		*/

		virtual void SetStateInfoObserver( MVRObserver* aObserver ) = 0;

		/**

		* Determines is view has a progress bar

		* @return ETrue if view has a progress bar, otherwise EFalse

		*/

		virtual TBool HasProgressBar() const = 0;

		/**

		* Registers an observer to communicate about the changes in InfoPanel. 

		* @param aObserver The observer object.

		*/

		virtual void SetStateInfoPanelObserver( MVRStateInfoObserver* aObserver ) = 0;

	};

#endif // __MVRSTATEINFOMODEL_H__