/*

* Copyright (c) 2006-2007 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:  An base class for multioperation implementations

*

*/

#ifndef CVPBKMULTICONTACTOPERATIONBASE_H

#define CVPBKMULTICONTACTOPERATIONBASE_H

// INCLUDES

#include <e32base.h>

// CLASS DECLARATION

/**

 * Base class for multi contact operations. Multi operations

 * contain other operations that are executed as one.

 *

 * @lib VPbkEng.lib

 */

class CVPbkMultiContactOperationBase : 

        public CBase,

        public MVPbkContactOperation

    {

    public: // Interface

        /**

         * Adds a new sub operation to this multi operation. Ownership

         * is taken by this object if this function does not leave.

         *

         * @param aOperation A Sub operation to add.

         */

        IMPORT_C void AddSubOperationL( MVPbkContactOperation* aOperation );

        /**

         * Returns number of sub operations in this multi operation.

         *

         * @return Number of sub operations in this multi operation.

         */

        IMPORT_C TInt SubOperationCount() const;

    public: // From MVPbkContactOperation

        void StartL();

        void Cancel();

    private: // interface for implementation opearation

        /**

         * If StartL is called and there are no sub operations

         * then this is called asynchronously to allow implementation

         * class to notify its observers.

         */

        virtual void HandleZeroSuboperations() = 0;

        static TInt AsyncCallback( TAny* aThis );

    protected: // Implementation

        CVPbkMultiContactOperationBase();

        ~CVPbkMultiContactOperationBase();

    private: // Data

        /// Own: Array of sub operations.

        RPointerArray<MVPbkContactOperation> iSubOperations;

        /// Own: an idle for zero suboperation case

        CIdle* iIdle;

    };

#endif // CVPBKMULTICONTACTOPERATIONBASE_H

// End of File