/*

* Copyright (c) 2002 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: 

*     Phonebook transaction view implementation class methods.

*

*/

#ifndef __CViewActivationTransactionImpl_H__

#define __CViewActivationTransactionImpl_H__

//  INCLUDES

#include "CPbkAppUi.h"

// FORWARD DECLARATIONS

class CDigViewNode;

class CAknTitlePane;

class CAknContextPane;

class CEikImage;

class CAknNavigationDecorator;

class CAknTabGroup;

// CLASS DECLARATION

/**

 * Transaction class for updating application-wide state leave-safely

 * at view switch.

 * @see CPbkAppUi::HandleViewActivationLC

 */

class CPbkAppUi::CViewActivationTransactionImpl

        : public CPbkAppUiBase::CViewActivationTransaction

    {

    public:  // Interface

        /**

         * Creates an instace of this transaction, performs all update 

         * operations of this transaction and saves rollback data in case 

         * the transaction is not committed.

         *

         * @param aAppUi phonebook's application UI

         * @param aViewId activated view's id

         * @param aPrevViewId previously active view's id

         * @param aTitlePaneText text to put into title pane, if NULL

         *        default text is used

         * @param aContextPanePicture picture to put into context pane, if

         *        NULL default picture is used

         * @return instance of this class

         */

        static CViewActivationTransactionImpl* NewLC

            (CPbkAppUi& aAppUi, 

            const TUid& aViewId, const TVwsViewId& aPrevViewId,

            const TDesC* aTitlePaneText, 

            const CEikImage* aContextPanePicture,

            TUint aFlags);

        /**

         * Destructor. Rolls back changes done in NewLC if this transaction

         * is not committed.

         */

        ~CViewActivationTransactionImpl();

    public:  // From CViewActivationTransaction

        /**

         * Commits this transaction. After this call all changes done in

         * NewLC are kept.

         */

        void Commit();

    private:  // Implementation

		CViewActivationTransactionImpl(CPbkAppUi& aAppUi, const TUid& aViewId,

			const TVwsViewId& aPrevViewId, TUint aFlags);

		void ConstructL(const TDesC* aTitlePaneText,

			const CEikImage* aContextPanePicture);

        void UpdateViewNavigationState();

        void UpdateNaviPaneL(TUid aViewId);

        void SetTitlePaneTextL(const TDesC* aTitlePaneText);

        void SetContextPanePictureL(const CEikImage* aContextPanePicture);

        CEikImage* CopyL(const CEikImage& aSrc);

    private:  // Data

        /// Ref: Phonebook Application UI

        CPbkAppUi* iAppUi;

        /// Own: Activated view's id

        TUid iViewId;

        /// Own: Deactivated view's id

        TVwsViewId iPrevViewId;

        /// Own: flags

        TUint iFlags;

        /// Ref: Saved previous view node state

        CDigViewNode* iSavePreviousViewNode;

        /// Ref: Application's title pane

        CAknTitlePane* iTitlePane;

        /// Own: Saved title pane text

        HBufC* iSaveTitlePaneText;

        /// Ref: Application's context pane

        CAknContextPane* iContextPane;

        /// Own: Saved picture from context pane

        CEikImage* iSaveContextPanePicture;

        /// Ref: navigation decorator pushed on the navi pane, if NULL

        /// nothing was pushed.

        CAknNavigationDecorator* iPushedNaviDecorator;

        /// Ref: Modified tab group

        CAknTabGroup* iTabGroup;

        /// Own: Saved index of active tab in iTabGroup

        TInt iSaveTabIndex;

    };

#endif // __CViewActivationTransactionImpl_H__

// End of File