/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* 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:

*

*

*/

#ifndef __CBSINSTALLHANDLER_H__

#define __CBSINSTALLHANDLER_H__

#include <e32base.h>

// FORWARD DECLARATIONS

class RFs;

/**

 * CBSInstallHandler

 *

 * Handles installation and uninstallation of brand packages.

 * Calls external application "bsinstall.exe" to do the actual work.

 * Can Observe the installation directory so that any sis installation

 * can be detected while the server is running.

 *

 */

NONSHARABLE_CLASS( CBSInstallHandler ): public CActive

	{

	public: 

	    // Operations for folder synchronization:

	    enum TInstallOperation

	        {

	        // copy files from source to destination if they don't

	        // already exists. 

	        EInstallCopyNewToDest,

	        // Delete files from source directory if the same

	        // files doesn't exist in destination directory.

	        EInstallDeleteFromSrc

	        };

	public: // constructors

		static CBSInstallHandler* NewL();

    	virtual ~CBSInstallHandler();

	private: // constructors

		void ConstructL();

		CBSInstallHandler();

	public:

        /**

        * Uninstall removed brands and installs new brands.

        * This should be called right after construction to sync the

        * installation state.

        */

        void InstallNewFilesL();

        /**

        * Start observing installation folder. Detects new brands if they

        * are installed while the server is active.

        */

        void StartObservingL();

        /**

        * Stop observing installation folder. All new brands are installed

        * only when calling InstallNewFilesL.

        */

        void StopObserving();

    private: // From CActive

        /**

        * @see CActive

        */

        void RunL();

        /**

        * @see CActive

        */

        void DoCancel();

    private: // new methods

        /**

        * Launches external installer application. It should install all

        * available brands into server.

        */

        void LaunchInstallerAppL();

        /**

        * Sync files between aSrcDir and aDestDir, according to given 

        * operation. See TInstallOperation for operations. Calls 

        * OperationNotifyL before every operation.

        *

        * @param aSrcDir Source directory

        * @param aDestDir Destination directory

        * @param aOperation Sync operation to execute

        * @return ETrue  - Something synchronized

        *         EFalse - Nothing synchronized

        */

        TBool SyncFilesL( const TDesC& aSrcDir, const TDesC& aDestDir, 

                          TInstallOperation aOperation );

        /**

        * Notification that file is about to be synchronized. 

        *

        * @param aOperation operation type which will be executed

        * @param aSrcFile file under operation

        */

        void OperationNotifyL( TInstallOperation aOperation, 

                               const TDesC& aSrcFile );

        /**

        * check if some version of given brand is installed in

        * branding server. 

        *

        * @param aBrand brand installation file to check

        *        this has to be brand file name without extension and 

        *        version information.

        */

        TBool IsBrandInstalled( const TDesC& aBrand );                  

        /**

        * Helper method to get servers private path

        * @param aPath contains the path to servers private folder

        * @param aAppend text to add into private path.

        */

        void GetPrivateFolder( TDes& aPath, const TDesC& aAppend = KNullDesC );

        /**

        * To create a flag file if brand gets discarded

        * @param aSrcFile file under operation

        */

		void CreateFlagFile(const TDesC& aSrcFile);

        /**

        * Checks if an discarded brand exists.

        * (It also writes the RProperty for the bsinstall.exe)

        *

        * @param aDir the folder of the data storages

        * @return ETrue, in case a discarded brand was found, EFalse otherwise

        */

        TBool CheckForDiscardedBrandsL( const TDesC& aDir );

        /**

        * Updates the RProperty. The specified string is added to the

        * RProperty only if RProperty does not contain the same string yet.

        *

        * @param aUninstallationString a string

        */

        void UpdateRPropertyL( const TDesC& aUninstallationString );

	private: // data

        // Own. File server session handle.

        RFs     iFs;

    };

#endif      //  __CBSINSTALLHANDLER_H__

//  END OF FILE