/*

* 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 FEATMGRSESSION_H

#define FEATMGRSESSION_H

//  INCLUDES

#include <e32base.h>

#include "featmgrclientserver.h"

#include "featmgrserver.h"

// FORWARD DECLARATIONS

class CFeatMgrFeatureRegistry;

// CLASS DECLARATION

/**

* Contains pending request if feature info is not ready.

*/

NONSHARABLE_CLASS(CFeatMgrPendingRequest) : public CBase

    {

    public:

        /**

        * Two-phased constructor.

        */

        static CFeatMgrPendingRequest* NewL(const RMessage2& aMessage);

        /**

        * Destructor.

        */

        virtual ~CFeatMgrPendingRequest();

	private:

	    /**

        * C++ default constructor.

        */

        CFeatMgrPendingRequest();

        /**

        * ConstructL

        */

	    void ConstructL(const RMessage2& aMessage);

	public: // data

	    // The offset of a component link object within elements that form the list.

	    static const TInt iOffset;

	    // Message for later completion is stored here.

        RMessage2 iMessage; 

	private: // data

	    // A link object encapsulates a pointer to the next link object in the list.

	    TSglQueLink iLink;       

	};

// CLASS DECLARATION

/**

*  Represents a session for a client thread on the server-side.

*  A session acts as a channel of communication between the client 

*  and the server. 

*

*/

NONSHARABLE_CLASS(CFeatMgrSession) : public CSession2

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CFeatMgrSession* NewL(CFeatMgrServer& aServer, CFeatMgrFeatureRegistry& aRegistry);

        /**

        * Destructor.

        */

        virtual ~CFeatMgrSession();

#ifdef EXTENDED_FEATURE_MANAGER_TEST

        /**

        * 2nd phase construct for sessions - called by the CServer framework

        */

        void CreateL();

#endif // EXTENDED_FEATURE_MANAGER_TEST

    public: // New functions

        /**

        * Called by the server when feature info is ready.

        * Calls request handling functions for pending requests.

        */

        void ServicePendingRequestsL();

        /**

        * Called by the server when existing feature has changed or new one added.

        * Completes client notification requests if such exist for feature changed.

        */

        void ServiceNotifications( TFeatureServerEntry& aFeature, TFeatureChangeType aType );

    	/**

    	* Panics client thread.

    	*

    	* @param aMessage Message that is being handled

    	* @param aPanic Panic type

    	*/

    	static void PanicClient( const RMessage2& aMessage, TFeatMgrPanic aPanic );

    public: // Functions from base classes

    protected:  // New functions

    protected:  // Functions from base classes

        /**

        * From CSession2

        *

        * @param aMessage The message containing the client request

        */

        virtual void ServiceL( const RMessage2& aMessage );

        virtual TInt CountResources();

    private:

        /**

        * C++ default constructor.

        */

        CFeatMgrSession(CFeatMgrServer& aServer, CFeatMgrFeatureRegistry& aRegistry);

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

        /**

        * Calls matching function of CFeatMgrServer for handling the request.

        *

        * @param aMessage The message containing the client request

        */

        void DispatchMessageL( const RMessage2& aMessage );

        TBool IsWriteOperation( const TInt aFunction ) const;

    private:    // Data

        /**

    	* Feature Manager server reference. 

    	*/

    	CFeatMgrServer& iFeatMgrServer; 

        /**

    	* Feature Manager feature handler reference. 

    	*/

    	CFeatMgrFeatureRegistry& iRegistry;

    	/**

    	* Linked list of CFeatMgrPendingRequest objects.

    	*/

    	TSglQue<CFeatMgrPendingRequest> iList; 

        /**

        * Array of IDs of supported features.

        */

        RFeatureUidArray iNotifyFeatures;

        /**

        * Request-message used for signaling client.

        */

        RMessagePtr2 iNotifyMessage;

    };

#endif      // FEATMGRSESSION_H 

// End of File