/*

* Copyright (c) 2007-2009 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:

*

*/

#ifndef FEATDISCOVERYIMPL_H 

#define FEATDISCOVERYIMPL_H 

//  INCLUDES

#include <e32base.h>

#include "featurecontrol.h"

class CFeatureDiscoveryImpl : public CBase

    {

    public:

	    /**

	    * This is a two-phase constructor method that is used to create

	    * a new instance of the CFeatureDiscoveryImpl class.

	    *

	    * @return a pointer to a new instance of the CFeatureDiscoveryImpl class.

	    *

	    * @leave Any One of the Symbian OS system-wide error codes

	    */

		static CFeatureDiscoveryImpl* NewL();

	    /**

	    * Destructor.

	    */

		virtual ~CFeatureDiscoveryImpl();

		/**

	    * Static way to fetch information whether a certain feature is 

	    * supported in the current envinronment. There is no need to create

	    * an instance of the class when using this method.

	    *

	    * @param aFeature is the feature UID of the feature that is queried.

	    * @return TBool indicating whether the feature is supported (ETrue)

	    * or not (EFalse). If the feature does not exist, the return value is 

	    * EFalse.

	    *

	    * @leave Any One of the Symbian OS system-wide error codes

	    */

	    static TBool IsFeatureSupportedL(TUid aFeature);

		/**

	    * Dynamic way to fetch information whether a certain feature is 

 		* supported in the current environment. Before calling the method 

	    * an instance of the CFeatureDiscoveryImpl class need to be created by 

	    * using one of the factory methods, NewL() or NewLC(). The created 

	    * instance must be deleted after use.

	    *

	    * @param aFeature is the feature UID of the feature that is queried.

	    * @return TBool indicating whether the feature is supported (ETrue)

	    * or not (EFalse). If the feature does not exist, the return value is 

	    * EFalse.

	    */

		TBool IsSupported(TUid aFeature);

		/**

		* Static way to fetch information whether set of features are 

		* supported in the current envinronment. There is no need to create

		* an instance of the class when using this method.

		*

		* @param aFeatures is the wrapper class for feature array queried.

		* @leave Any One of the Symbian OS system-wide error codes

		*/

		static void FeaturesSupportedL( TFeatureSet& aFeatures );

		/**

	    * Dynamic way to fetch information whether set of features are 

 		* supported in the current environment. Before calling the method 

	    * an instance of the CFeatureDiscovery class need to be created by 

	    * using one of the factory methods, NewL() or NewLC(). The created 

	    * instance must be deleted after use.

	    *	    

	    * @param aFeatures is the wrapper class for feature array queried.

	    * @return KErrNone if status query succeeded.

	    *         Otherwise one of the Symbian OS error codes

	    */

		TInt FeaturesSupported( TFeatureSet& aFeatures );

    private:

	    /**

	    * C++ default constructor.

	    */

			CFeatureDiscoveryImpl();

	    /**

	    * By default Symbian OS constructor is private.

	    */

	    void ConstructL();

    private:

		// Feature Manager server client 

		RFeatureControl iFeatControl;

    } ;

#endif  // FEATDISCOVERYIMPL_H 

// EOF