/*

* Copyright (c) 2002-2007 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 application UI extension implementation

*

*/

#ifndef CPBK2APPUIEXTENSION_H

#define CPBK2APPUIEXTENSION_H

//  INCLUDES

#include <e32base.h>

#include <MPbk2AppUiExtension.h>

#include <MPbk2StartupMonitor.h>

#include <MPbk2StartupObserver.h>

// FORWARD DECLARATIONS

class CPbk2UIExtensionLoader;

class CPbk2ThinUIExtensionLoader;

class CVPbkContactManager;

// CLASS DECLARATION

/**

 * An application UI extension implementation.

 */

NONSHARABLE_CLASS(CPbk2AppUiExtension) : 

        public CBase,

        public MPbk2AppUiExtension,

        public MPbk2StartupMonitor,

        private MPbk2StartupObserver

    {

    public:  // Constructors and destructor

        /**

         * Two-phased constructor.

         *

         * @param aContactManager the Virtual Phonebook Contact Manager

  		 * @param aExtensionLoader a UI extension loader for calling extension

		 *        start-up point

		 * @param aThinExtensionLoader a thin extension loader for calling thin 

		 *        extension start-up point.

		 * @return a new instance of this class

         */

        static CPbk2AppUiExtension* NewL(

                CVPbkContactManager& aContactManager,

                CPbk2UIExtensionLoader& aExtensionLoader,

                CPbk2ThinUIExtensionLoader& aThinExtensionLoader);

        /**

         * Destructor.

         */

        virtual ~CPbk2AppUiExtension();

    public: // Functions from MPbk2AppUiExtension

        void ExtensionStartupL(MPbk2StartupMonitor& aStartupMonitor);

        void ApplyDynamicPluginTabGroupContainerChangesL(

                const CPbk2ViewNode& aNode, 

                CAknTabGroup& aAknTabGroup,

                CPbk2IconInfoContainer& aTabIcons,

                TInt aViewCount);

    public: // Functions from MPbk2UiReleasable

        void DoRelease();

    public: // Functions from MPbk2StartupMonitor

        void HandleStartupComplete();

        void HandleStartupFailed( TInt aError );

        void RegisterEventsL( MPbk2StartupObserver& aObserver );

		void DeregisterEvents( MPbk2StartupObserver& aObserver );

        void NotifyViewActivationL( TUid aViewId );

        void NotifyViewActivationL(

                TUid aViewId, MVPbkContactViewBase& aContactView );

    private:    // Functions from MPbk2StartupObserver

        void ContactUiReadyL( 

                MPbk2StartupMonitor& aStartupMonitor );

    private:    // New functions

        void StopObservingMonitor();

        TBool AllExtensionsCompleted() const;

        TInt NumOfExtensions() const;

    private: // Construction

        CPbk2AppUiExtension(

                CVPbkContactManager& aContactManager,

                CPbk2UIExtensionLoader& aExtensionLoader,

                CPbk2ThinUIExtensionLoader& aThinExtensionLoader);

        void ConstructL();

    private:    // Data        

        /// Ref: a UI extension loader for calling extension start-up point

        CPbk2UIExtensionLoader& iExtensionLoader;

        /// Ref: a thin extension loader for calling thin extension start-up point.

        CPbk2ThinUIExtensionLoader& iThinExtensionLoader;

        /// Ref: The phonebook2 contact manager

        CVPbkContactManager& iContactManager;

        /// Own: An array for extensions

        RPointerArray<MPbk2AppUiExtension> iExtensions;

        /// Ref: the actual start-up monitor

        MPbk2StartupMonitor* iStartupMonitor;

        /// Own: The number of extensions that have notified start-up complete

        TInt iNumOfCompletedExtensions;

        /// Own: The number of extensions that have notified start-up failed

        TInt iNumOfFailedExtensions;

        /// Own: An array of start-up observers

        RPointerArray<MPbk2StartupObserver> iStartupObservers;

        /// Own: the state of the core pbk2 UI.

        TBool iContactUiReady;

    };

#endif      // CPBK2APPUIEXTENSION_H

// End of File