/*

* Copyright (c) 2006-2006 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:  Active notifier class

 *

*/

#ifndef CPCLIENTACTIVENOTIFIER_H

#define CPCLIENTACTIVENOTIFIER_H

// INCLUDES

#include <e32hashtab.h> 

#include "cpclientsession.h"

class MLiwNotifyCallback;

/**

 *  Content publisher active notifier class

 *

 * 

 *  @lib cpclient.dll

 *  @since S60 v 5.0

 */

class CCPActiveNotifier : public CActive

    {

public:

    /**

     * Two-phased constructor.

     * 

     */     

    static CCPActiveNotifier* NewL( RCPServerClient& aServerClient );

    /**

     * Desctructor.

     */     

    ~CCPActiveNotifier();

    /**

     * Register observer

     *

     * @param aObserver Pointer for callback

     * @param aMap Map containing parameters

     * @param aTransactionId Integer transaction id

     */

    void RegisterL( MLiwNotifyCallback* aObserver, TInt32 aTransactionId, 

    		CCPLiwMap* aMap );

    /**

     * Unregister observer

     *

     * @since S60 v 5.0

     */

    void UnregisterL();

    /**

     * Unregister observer

     *

     * @since S60 v 5.0

     * @param aTransactionId Integer transaction id

     * @return returns ETrue if last observer was unregistered

     */

    TBool UnregisterL( TInt32 aTransactionId );

    /**

     * Unregister all observers

     * @since S60 v 5.0

     */   

    void UnregisterAllL(  );

protected:

    /**

     * From CActive, RunL.

     * Handles the active object’s request completion event

     */

    void RunL();

    /**

     * From CActive, DoCancel.

     * Implements cancellation of an outstanding request.

     */

    void DoCancel();

    /**

     * From CActive, RunError.

     * Implements cancellation of an outstanding request.

     */

    TInt RunError( TInt aError );

private:

    /**

     * C++ default constructor.

     */    

    CCPActiveNotifier( RCPServerClient& aServerClient );

    /**

     * Perform the second phase construction of a CCPActiveNotifier object.

     */    

    void ConstructL();

    /*

     * Notify all observers

     */

    void NotifyObserversL( TInt aErrorCode, 

    		CLiwGenericParamList* aEventParamList  );

    /*

     * Register observer

     */

    void RegisterAgainL( );

private:

    /**

     * Descriptor where server can write to when passing data

     * Own.

     */

    HBufC8 *iObserverBuf;

    /**

     * Size of the descriptor passed between server and client

     * Own.   

     */

    TPckgBuf<TInt>* iSizeDes;

    /**

     * Client-server session

     * Not Own.

     */

    RCPServerClient iServerClient;

    /*

     * Array containing all observers

     * Own

     */

    RHashMap<TInt32, MLiwNotifyCallback*> iObservers;

    };

#endif // CPCLIENTACTIVENOTIFIER_H