/*

* Copyright (c) 2005-2007 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:  Provide interface for the client requestin availability class.

*

*/

#ifndef __CMUSAVAAVAILABILITY_H__

#define __CMUSAVAAVAILABILITY_H__

#include <e32def.h>

#include <e32base.h>

#include "musavaobserver.h"

#include "musavaavailabilityobserver.h"

#include "muslogger.h"

#include "musunittesting.h"

class MMusAvaAvailabilityObserver;

/**

 *  Availability interface class definition.

 *

 *  Provide interface for the client to availability class.

 *

 *  @lib musavailabilityplugin.lib

 */

class CMusAvaAvailability : public CBase

	{

public:

	/**

	* Current availability plugin state.

	*

	* @return Availability state

	*/

	MMusAvaObserver::TAvailabilityStatus AvailabilityPluginState()

		{

		return iObserver.AvailabilityPluginState();

		}

	/**

	* Executes for the availability.

	*

	* @since S60 v3.2

	* @return KErrNone if ExecutePatternL operation was successfully executed;

	*         system wide error otherwise

	*/

    void Execute()

        {

        MMusAvaObserver::TAvailabilityName name = Name();

        MUS_LOG1( "mus: [MUSAVA]  -> CMusAvaAvailability::Execute(%d)", name )

        if ( !Executing() && !Available() )

            {

            TRAPD( error, DoExecuteL() )

            if ( error )

                {

                MUS_LOG1( "mus: [MUSAVA]     CMusAvaAvailability::Execute error:%d", error )

                iObserver.AvailabilityError( name, (MMusAvaObserver::TAvailabilityStatus)error );

                }

            }

        MUS_LOG( "mus: [MUSAVA]  <- CMusAvaAvailability::Execute()" )

        }

	/**

	* Executes *this*  availability.

	*

	*/

    virtual void DoExecuteL() = 0;

	/**

	* Returns availability name.

	*

	* @return Name of *this* availability.

	*/

    virtual MMusAvaObserver::TAvailabilityName Name() = 0;

	/**

	 * Returns execution state.

	 *

	 * @return KErrNone if ExecutePatternL operation was successfully executed;

	 *         system wide error otherwise

	 */

    TBool Executing()

        {

        return iState == MMusAvaObserver::EMusAvaStatusInProgress;

        }

	/**

	* Returns *this* availability state.

	*

	* @return ETrue if is available, EFalse otherwise

	*/

    TBool Available()

        {

        return iState == MMusAvaObserver::EMusAvaStatusAvailable;

        }

	/**

	* Stop the execution.

	*

	* @since S60 v3.2

	* @return KErrNone if stop operation was successfully executed;

	*         system wide error otherwise

	*/

    virtual void Stop()

        {

        MUS_LOG( "mus: [MUSAVA]  -> CMusAvaAvailability::Stop()" )

        iState = MMusAvaObserver::EMusAvaStatusNotExecuted;

        MUS_LOG( "mus: [MUSAVA]  <- CMusAvaAvailability::Stop()" )

        }

	/**

	* Returns *this* availability state.

	*

	* @return Availability state.

	*/

    MMusAvaObserver::TAvailabilityStatus State()

        {

        return iState;

        }

	/**

	* Set availability state.

	*

	*/

    void SetState( MMusAvaObserver::TAvailabilityStatus aState )

        {

        MUS_LOG1( "mus: [MUSAVA]  -> CMusAvaAvailability::SetState(%d)", aState )

        if ( iState != aState )

            {

            iState = aState;

            iObserver.AvailabilityChanged( Name(), iState );

            }

        MUS_LOG( "mus: [MUSAVA]  <- CMusAvaAvailability::SetState" )

        }

   /**

	* Returns specific availability state.

	*

	* @return Availability state.

	*/    

    TBool Available( MMusAvaObserver::TAvailabilityName aAvailability )

        {

        return iObserver.Available( aAvailability );

        }

    virtual ~CMusAvaAvailability() {};

protected:

    CMusAvaAvailability( MMusAvaAvailabilityObserver& aObserver )

        :iObserver( aObserver ),

        iState( MMusAvaObserver::EMusAvaStatusNotExecuted ) {}

protected: // data

    MMusAvaAvailabilityObserver& iObserver;

    MMusAvaObserver::TAvailabilityStatus iState;

	MUS_UNITTEST ( CMusAvaAvailabilityStub )

	MUS_UNITTEST ( CMusAvaDefaultImp )

	MUS_UNITTEST ( UT_CMusAvaConnectionAvailability )

    MUS_UNITTEST ( UT_CMusAvaDefaultImp )

    MUS_UNITTEST ( UT_CMusAvaOptionHandler )

    MUS_UNITTEST ( UT_CMusAvaDefaultOptionHandler )

    MUS_UNITTEST ( UT_CMusAvaSettingAvailability )

    };

#endif // __CMUSAVAAVAILABILITY_H__