1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include "pspropertyobserver.h"

    17 

    18 CPsPropertyObserver* CPsPropertyObserver::NewL(const TUid& aGroup, TInt aKey, MPsPropertyObserver& aObserver)

    19 	{

    20 	CPsPropertyObserver* self = new(ELeave) CPsPropertyObserver(aKey,aObserver);

    21 	CleanupStack::PushL(self);

    22 	self->ConstructL(aGroup);

    23 	CleanupStack::Pop(self);

    24 	return self;

    25 	}

    26 

    27 CPsPropertyObserver::CPsPropertyObserver(TInt aKey, MPsPropertyObserver& aObserver)

    28 	:CActive(EPriorityNormal),

    29 	iKey(aKey),

    30 	iObserver(aObserver)

    31 	{

    32 	}

    33 

    34 void CPsPropertyObserver::ConstructL(const TUid& aGroup)

    35 	{

    36 	User::LeaveIfError(iProperty.Attach(aGroup,iKey));

    37 	CActiveScheduler::Add(this);

    38 	// initial subscription and process current property value

    39 	Start();

    40 	}

    41 

    42 CPsPropertyObserver::~CPsPropertyObserver()

    43 	{

    44 	Cancel();

    45 	iProperty.Close();

    46 	}

    47 

    48 void CPsPropertyObserver::DoCancel()

    49 	{

    50 	iProperty.Cancel();

    51 	}

    52 

    53 void CPsPropertyObserver::RunL()

    54 	{

    55 	iProperty.Get(iValue);	

    56 	iObserver.PsPropertyChanged(iKey,iValue);

    57 	// resubscribe

    58 	Start();

    59 	}

    60 

    61 void CPsPropertyObserver::Start()

    62 	{

    63 	if (IsActive())

    64 		{

    65 		Cancel();

    66 		}

    67 	

    68 	iProperty.Subscribe(iStatus);

    69 	SetActive();		

    70 	}