/*

* Copyright (c) 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:  Drive unlock handler implementation

 *

*/

#ifndef SYSAPDRIVEUNLOCKHANDLER_H

#define SYSAPDRIVEUNLOCKHANDLER_H

// INCLUDES

#include <e32std.h>

#include <aknmemorycarddialog.h>

// FORWARD DECLARATIONS

class CSysApDriveList;

class CSysApAppUi;

// CLASS DECLARATION

class CSysApDriveUnlockHandler : public CBase,

                                 public MAknMemoryCardDialogObserver

{

public:

    /**

     * Two-phased constructor.

     */

    static CSysApDriveUnlockHandler* NewL(

        CSysApDriveList& aSysApDriveList,

        CSysApAppUi& aSysApAppUi,

        const TBool aMemoryCardLockSupported );

    /**

     * Destructor

     */

    ~CSysApDriveUnlockHandler();

public: // New methods

    /**

     * Starts unlock notifier if not already ongoing

     */

    void StartUnlock();

    /**

     * Stops unlock notifier for given drive if currently shown.

     * @param aDrive Drive to stop unlock notifier if ongoing

     */

    void StopUnlock( TInt aDrive );

private:

    /**

    * Constructor.

    */

    CSysApDriveUnlockHandler(

        CSysApDriveList& aSysApDriveList,

        CSysApAppUi& aSysApAppUi,

        const TBool aMemoryCardLockSupported );

    /**

    * Handles query show from CAsyncCallBack.

    */

    static TInt QueryShowCB( TAny* aPtr );

    /**

    * Shows unlock query.

    */

    void ShowUnlockQueryL();

    /**

    * Checks is unlock query ongoing.

    */

    TBool IsQueryOngoing() const;

    /**

    * Start query if drives left to be unlocked.

    */

    void DoStartQueryIfNeededL();

    /**

    * Start query using CAsyncCallBack if drives left to be unlocked.

    */

    void DoStartQueryAsyncIfNeeded();

    /**

    * Stops unlock.

    */

    void DoStopUnlock( TInt aError );

private: // From MAknMemoryCardDialogObserver

    void UnlockComplete( TInt aResult );

private: // Data

    // Reference to the drive list

    CSysApDriveList& iSysApDriveList;

    // Reference to the app ui

    CSysApAppUi& iSysApAppUi;

    // Indicates if memory card locking is supported

    TBool iMemoryCardLockSupported;

    // Pointer to unlock query. Own,

    CAknMemoryCardDialog* iMemoryCardDialog;

    // Current drive to be unlocked

    TInt iDriveToUnlock;

    // Pointer to the callback. Own.

    CAsyncCallBack* iQueryShowCB;

    // Indicates if the query result can be ignored i.e. query was canceled

    TBool iIgnoreQueryResult;

};

#endif // SYSAPDRIVEUNLOCKHANDLER_H

// End of File