/*

* Copyright (c) 2005, 2006 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:  This implements USBClassChangeUIPluginCRWatcher class.

*

*/

// INCLUDE FILES

#include "USBClassChangeUIPluginCRWatcher.h"

#include "UsbWatcherInternalCRKeys.h"

#include "USBClassChangeUIPluginModel.h"

#include "USBClassChangeUIPluginDebug.h"

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// CUSBClassChangeUIPluginCRWatcher::NewL

// Two-phased constructor.

// -----------------------------------------------------------------------------

//

CUSBClassChangeUIPluginCRWatcher* CUSBClassChangeUIPluginCRWatcher::NewL(

    MUSBUICRSettingObserver& aOwner, TUint32 aKey, TBool aOneShot)

    {

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher:NewL"));

    CUSBClassChangeUIPluginCRWatcher* self 

        = new (ELeave) CUSBClassChangeUIPluginCRWatcher(aOwner, aKey, aOneShot);

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self ); 

    return self;

    }

// -----------------------------------------------------------------------------

// CUSBClassChangeUIPluginCRWatcher::~CUSBClassChangeUIPluginCRWatcher

// C++ default destructor

// -----------------------------------------------------------------------------

//    

CUSBClassChangeUIPluginCRWatcher::~CUSBClassChangeUIPluginCRWatcher()

    {

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher: desctructor"));

    Cancel(); // cancels any existing active object orders for iStatus

    delete iPersonalityRepository; // deletes CRepository* member object.

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher: desctructor complete"));

    }

// -----------------------------------------------------------------------------

// CUSBClassChangeUIPluginCRWatcher::CUSBClassChangeUIPluginCRWatcher

// C++ default constructor can NOT contain any code, that

// might leave.

// -----------------------------------------------------------------------------

//

CUSBClassChangeUIPluginCRWatcher::CUSBClassChangeUIPluginCRWatcher(

    MUSBUICRSettingObserver& aOwner, TUint32 aKey, TBool aOneShot)

    : CActive(EPriorityStandard), 

    iOwner(aOwner),

    iKey(aKey),

    iOneShot(aOneShot)

    {

    }

// -----------------------------------------------------------------------------

// CUSBClassChangeUIPluginCRWatcher::RunError

// Standard active object error function.

// -----------------------------------------------------------------------------

//

TInt CUSBClassChangeUIPluginCRWatcher::RunError(TInt /*aError*/)

    {

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher::RunError: ERROR %d \

        from RunL.") );

    return KErrNone;

    }

// -----------------------------------------------------------------------------

// CUSBClassChangeUIPluginCRWatcher::RunL

// This function will be called upon a change in the watched key.

// -----------------------------------------------------------------------------

//

void CUSBClassChangeUIPluginCRWatcher::RunL()

    {

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher::RunL"));

    iOwner.SettingChangedL( iKey );        

    if (!iOneShot)

        {

        StartListeningL(); 

        }

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher::RunL complete."));

    }

// -----------------------------------------------------------------------------

// CUSBClassChangeUIPluginCRWatcher::ConstructL

// Construct member variable iPersonalityRepository that is to access the

// repository. Then start listening of the changes in the repository.

// -----------------------------------------------------------------------------

//

void CUSBClassChangeUIPluginCRWatcher::ConstructL()

    {

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher: ConstructL"));

    CActiveScheduler::Add(this);

    iPersonalityRepository = CRepository::NewL( KCRUidUsbWatcher );

    StartListeningL();

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher: ConstructL complete"));        

    }

// -----------------------------------------------------------------------------

// CUSBClassChangeUIPluginCRWatcher::StopListening

// Cancels notifications.

// -----------------------------------------------------------------------------

//

void CUSBClassChangeUIPluginCRWatcher::StopListening()

    {

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher: StopListening"));

    Cancel();

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher: StopListening complete"));

    }

// -----------------------------------------------------------------------------

// CUSBClassChangeUIPluginCRWatcher::StartListeningL

// Orders notifications and sets the object active.

// -----------------------------------------------------------------------------

//

void CUSBClassChangeUIPluginCRWatcher::StartListeningL()

    {

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher: StartListeningL"));

    if(IsActive())

        {

        return;   

        }

    User::LeaveIfError(iPersonalityRepository->NotifyRequest(

        iKey, 

        iStatus ) );

    SetActive();

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher: StartListening complete"));

    }

// -----------------------------------------------------------------------------

// CUSBClassChangeUIPluginCRWatcher::DoCancel

// Standard active object cancellation function.

// -----------------------------------------------------------------------------

//

void CUSBClassChangeUIPluginCRWatcher::DoCancel()

    {

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher::DoCancel"));

    if ( iPersonalityRepository )

        {

        // cancel the order for change notifications

        iPersonalityRepository->NotifyCancel( iKey );

        }

    FLOG(_L("[USBCLASSCHANGEUIPLUGIN]\tCUSBClassChangeUIPluginCRWatcher::DoCancel complete"));

    }

// End of file