/*

* Copyright (c) 2004 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: 

*

*/

#ifndef UNINSTALLER_H

#define UNINSTALLER_H

#include <e32base.h>

#include <f32file.h>

#include <apgcli.h>

#include "programstatus.h"

#include "silentuninstaller.h"

namespace Swi

{ 

class CVersionRevisor;

class CDialogWrapper;

/**

 *  CSisPkgUninstaller class handles asyncronous uninstalling for sisx. 

 *

 *  @since S60 3.2

 */

class CSisPkgUninstaller : public CActive

    {

    public:

        // Uninstaller state.

        enum TUninstallerState

            {           

            EUninstallerStateUninstalling,

            EUninstallerStateIdle, 

            EUninstallerStateBusy           

            };        

        /**

         * Two-phased constructor.

         */    

        static CSisPkgUninstaller* NewL( 

                CProgramStatus& aMainStatus, 

                CVersionRevisor& aRevisor );

        /**

         * C++ destructor

         */

        ~CSisPkgUninstaller();

        /**

          * This function starts uninstall process for sisx. Leavs if 

          * there is nothing to uninstall.

          * 

          * @since 3.2      

          */   

        void StartUninstallL(); 

        /**

         * This function adds sis pkg UID to uninstall array. Uninstaller 

         * sends UIDs to SWI uninstaller.

         * 

         * @since 3.2 

         * @param aUID Package UID to be added to array.

         */        

        void AddUidToListL( const TUid& aUID );

    private: // From CActive

        /**

         * Called by Cancel when a request is outstanding.   

         * 

         * @since 3.2     

         */

        void DoCancel();

        /**

         * Asynchronous uninstall request processing. 

         * 

         * @since 3.2        

         */

        void RunL();

        /**

         * Handles any Leaves from the RunL.  

         * 

         * @since 3.2 

         * @param aError Error code

         * @return TInt Error code     

         */

        TInt RunError( TInt aError );

    private:

        /**

         * C++ constructor

         */

        CSisPkgUninstaller();

        /**

         * 2nd phase constructor

         * 

         * @param aMainStatus SWI Daemon program main status.

         * @param aReviso Pointer to CVersionRevisor instance.

         */

        void ConstructL( CProgramStatus& aMainStatus, CVersionRevisor& aRevisor );

        /**

         * Self request completion.

         * 

         * @since 3.2         

         */

        void CompleteSelf();

        /**

         * This is called after all uids are uninstalled.

         * 

         * @since 3.2 

         * @param aResult Result of uninstall process.

         */

        void UninstallationCompleted( TInt /*aResult*/ );

        /**

         * Stop running and exit. Uninstaller calls this when all

         * tasks are done. Function calls CVersionRevisor::Exit() for destruction.

         * 

         * @since 3.2 

         */       

        void ExitUninstaller();

    private:

        RFs iFs;

        // Internal wait timer. Used for waiting of install process etc.        

        RTimer iTimer;        

        // Array for sis package uids.

        RArray<TUid> iPkgUidArray;                

        RApaLsSession iApaSession; 

        // Uninstaller AO state.

        TUninstallerState iState;

        // Defines SWI Daemon main state (installing, uninstallin, idle).        

        TInt iGeneralProcessStatus;

        // Current array index.

        TInt iUidArrayIndex;

        // Current sis pkg uid.

        TUid iUID;

        // Not own. CProgramStatus instance, which holds Daemon's main status. 

        CProgramStatus* iProgramStatus;

        // Class to controll uninstalling process.

        CSilentUninstaller* iSilentUninstaller;

        // Not own. CVersionRevisor instance, which starts uninstall.

        CVersionRevisor* iRevisor;

        // Uninstaller dialog.        

        CDialogWrapper* iDialogs;

        // Descriptor for mime type.

        HBufC8* iMime;                 

    };      

} //namespace Swi

#endif /*UNINSTALLER_H*/

//EOF