/*

* Copyright (c) 2005 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:  Base class for session slot, reference counted objects.

*

*/

#ifndef CPENGSESSIONSLOTOBJECT_H

#define CPENGSESSIONSLOTOBJECT_H

//  INCLUDES

#include <E32Base.h>

//FORWARD DECLARATION

class CPEngSessionSlotObjectCon;

class CPEngSessionSlotId;

// CLASS DECLARATION

/**

 * Base class for session slot, reference counted objects.

 *

 * @since 3.0

 */

NONSHARABLE_CLASS( CPEngSessionSlotObject ) : public CBase

    {

public:  // Access count &  Destructor

    /**

     * Destructor.

     */

    virtual ~CPEngSessionSlotObject();

    /**

     * Opens the reference to object.

     *

     * @since 3.0

     */

    virtual void Open();

    /**

     * Closes the reference to object.

     *

     * @since 3.0

     */

    virtual void Close();

protected:  // Constructors

    /**

     * C++ default constructor.

     */

    CPEngSessionSlotObject();

    /**

     * Symbian OS constructor.

     * Derived class must call this to provide

     * the session slot id.

     */

    void ConstructL( const CPEngSessionSlotId& aSlotId );

public:  //New functions

    /**

     * Reference to session slot ID where

     * the object is connected.

     *

     * @since 3.0

     * @return The session slot ID.

     */

    const CPEngSessionSlotId& SlotId() const;

    /**

     * Sets the object owner.

     * Owner can be set only once.

     *

     * @since 3.0

     * @param aOwner The object owner.

     */

    void SetOwner( CObject& aOwner );

    /**

     * Gets the object's current

     * reference count.

     *

     * @since 3.0

     * @return The object current reference count.

     */

    TInt RefCount() const;

private:    // Friend declaration

    /**

     * Friend declaration.

     *

     * @since 3.0

     */

    friend class CPEngSessionSlotObjectCon;     // CSI: 36 #

private:    // Data

    //OWN: Reference access count

    TInt    iAccessCount;

    //OWN: Session slot ID.

    CPEngSessionSlotId*     iSlotId;

    //REF: The container.

    CPEngSessionSlotObjectCon*  iContainer;

    //REF: The owner.

    CObject*    iOwner;

    };

#endif      // CPENGSESSIONSLOTOBJECT_H

// End of File