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

    19 	{

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

    21 	CleanupStack::PushL(self);

    22 	self->ConstructL(aGroup);

    23 	CleanupStack::Pop(self);

    24 	return self;

    25 	}

    26 

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

    28 	:CActive(EPriorityNormal),

    29 	iGroup(aGroup),

    30 	iKey(aKey),

    31 	iObserver(aObserver)

    32 	{

    33 	}

    34 

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

    36 	{

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

    38 	CActiveScheduler::Add(this);

    39 	// initial subscription and process current property value

    40 	Start();

    41 	}

    42 

    43 CPsPropertyObserver::~CPsPropertyObserver()

    44 	{

    45 	Cancel();

    46 	iProperty.Close();

    47 	}

    48 

    49 void CPsPropertyObserver::DoCancel()

    50 	{

    51 	iProperty.Cancel();

    52 	}

    53 

    54 void CPsPropertyObserver::RunL()

    55 	{

    56 	if(KErrNone == iStatus.Int())

    57     {

    58     iProperty.Get(iValue);	

    59     }

    60 	iObserver.PsPropertyChanged(iKey,iValue, iStatus.Int());

    61 	// resubscribe

    62 	Start();

    63 	}

    64 

    65 void CPsPropertyObserver::Start()

    66 	{

    67 	if (IsActive())

    68 		{

    69 		Cancel();

    70 		}

    71 	

    72 	iProperty.Subscribe(iStatus);

    73 	SetActive();		

    74 	}

    75 

    76 EXPORT_C TInt CPsPropertyObserver::Get(const TUid& aGroup, TInt aKey, TInt& value)

    77     {

    78     return RProperty::Get(aGroup, aKey, value);

    79     }

    80 

    81 EXPORT_C TInt CPsPropertyObserver::Get(TInt& value)

    82     {

    83     return Get(iGroup, iKey, value);

    84     }

    85