author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 15 Mar 2010 12:42:24 +0200 | |
branch | RCL_3 |
changeset 7 | 3cebc1a84278 |
parent 0 | c53acadfccc6 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: This implements CListener class. |
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* |
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*/ |
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// INCLUDE FILES |
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#include "listener.h" |
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#include "mpropertyobserver.h" |
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#include "harvesterlog.h" // For debugging. |
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// ============================ MEMBER FUNCTIONS =============================== |
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// ----------------------------------------------------------------------------- |
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// CListener::NewL |
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// Two-phased constructor. |
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// ----------------------------------------------------------------------------- |
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// |
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CListener* CListener::NewL( const TUid aPropertyCategory, |
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const TUint aKey ) |
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{ |
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WRITELOG( "CListener::NewL() - begin" ); |
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CListener* self = CListener::NewLC( aPropertyCategory, aKey ); |
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CleanupStack::Pop( self ); |
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WRITELOG( "CListener::NewL() - end" ); |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// CListener::NewLC |
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// Two-phased constructor. |
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// ----------------------------------------------------------------------------- |
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// |
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CListener* CListener::NewLC( const TUid aPropertyCategory, |
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const TUint aKey ) |
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{ |
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WRITELOG( "CListener::NewLC() - begin" ); |
0
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CListener* self = new ( ELeave ) CListener( aPropertyCategory, aKey ); |
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CleanupStack::PushL( self ); |
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self->ConstructL(); |
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WRITELOG( "CListener::NewLC - end" ); |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// CListener::~CListener |
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// C++ default destructor |
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// ----------------------------------------------------------------------------- |
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// |
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CListener::~CListener() |
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{ |
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WRITELOG( "CListener::~CListener - begin" ); |
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Cancel(); // Cancels any existing active object orders for iStatus. |
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iProperty.Close(); |
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iArrayForKeyValue.Reset(); |
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iArrayForKeyValue.Close(); |
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iArrayForKeyAndStatus.Reset(); |
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iArrayForKeyAndStatus.Close(); |
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WRITELOG( "CListener::~CListener - end" ); |
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} |
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// ----------------------------------------------------------------------------- |
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// CListener::ObservedKey |
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// Returns observed key. |
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// ----------------------------------------------------------------------------- |
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// |
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TUint CListener::ObservedKey() const |
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{ |
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WRITELOG( "CListener::ObservedKey" ); |
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return iKey; |
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} |
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// ----------------------------------------------------------------------------- |
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// CListener::ObservedCategory |
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// Returns observed key's Category. |
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// ----------------------------------------------------------------------------- |
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// |
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TUid CListener::ObservedCategory() const |
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{ |
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WRITELOG( "CListener::ObservedCategory" ); |
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return iPropertyCategory; |
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} |
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// ----------------------------------------------------------------------------- |
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// CListener::RegisterNewClientForKeyValueL |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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void CListener::RegisterNewClientForKeyValueL( const MKeyObserver* aKeyObserver ) |
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{ |
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WRITELOG( "CListener::RegisterNewClientForKeyValue" ); |
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User::LeaveIfError( iArrayForKeyValue.Append( aKeyObserver ) ); |
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} |
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// ----------------------------------------------------------------------------- |
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// CListener::RegisterNewClientForKeyAndStatusL |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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void CListener::RegisterNewClientForKeyAndStatusL( |
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const MKeyAndStatusObserver* aKeyAndStatusObserver ) |
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{ |
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WRITELOG( "CListener::RegisterNewClientForKeyAndStatus" ); |
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User::LeaveIfError( iArrayForKeyAndStatus.Append( aKeyAndStatusObserver ) ); |
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} |
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// ----------------------------------------------------------------------------- |
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// CListener::UnregisterKeyClient |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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void CListener::UnregisterKeyClient( const MKeyObserver* aKeyObserver ) |
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{ |
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WRITELOG( "CListener::RemoveClient - begin" ); |
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const TInt listIndex = iArrayForKeyValue.Find( aKeyObserver ); |
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if( listIndex != KErrNotFound ) |
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{ |
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iArrayForKeyValue.Remove( listIndex ); |
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} |
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WRITELOG( "CListener::RemoveClient - end" ); |
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} |
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// ----------------------------------------------------------------------------- |
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// CListener::UnregisterKeyAndStatusClient |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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void CListener::UnregisterKeyAndStatusClient( const MKeyAndStatusObserver* aKeyAndStatusObserver ) |
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{ |
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WRITELOG( "CListener::UnregisterKeyAndStatusClient - begin" ); |
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const TInt listIndex = iArrayForKeyAndStatus.Find( aKeyAndStatusObserver ); |
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if( listIndex != KErrNotFound ) |
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{ |
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iArrayForKeyAndStatus.Remove( listIndex ); |
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} |
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WRITELOG( "CListener::UnregisterKeyAndStatusClient - end" ); |
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} |
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// ----------------------------------------------------------------------------- |
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// CListener::CListener |
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// C++ default constructor can NOT contain any code, that |
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// might leave. |
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// ----------------------------------------------------------------------------- |
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// |
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CListener::CListener( const TUid aPropertyCategory, const TUint aKey ) : |
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CActive( CActive::EPriorityUserInput ), |
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iPropertyCategory( aPropertyCategory ), |
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iKey( aKey ) |
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{ |
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// No implementation required. |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CListener::ConstructL |
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// Construct member variable that is to access the |
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// kernel. |
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// ----------------------------------------------------------------------------- |
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// |
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void CListener::ConstructL() |
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{ |
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WRITELOG( "CListener::ConstructL - begin" ); |
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|
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CActiveScheduler::Add( this ); |
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// Attach to key. |
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User::LeaveIfError( iProperty.Attach( |
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iPropertyCategory, |
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iKey, |
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EOwnerThread ) ); |
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|
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// Sets object active. |
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StartListening(); |
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|
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WRITELOG( "CListener::ConstructL - end" ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CListener::RunL |
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// This function will be called upon a change in the watched key. |
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// From class CActive. |
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// ----------------------------------------------------------------------------- |
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// |
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void CListener::RunL() |
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{ |
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#ifdef _DEBUG |
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WRITELOG1( "CListener::RunL - begin, iStatus: %d", iStatus.Int() ); |
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#endif |
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|
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if( iStatus.Int() == KErrNone ) |
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{ |
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TInt keyValue( KErrNone ); |
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User::LeaveIfError( iProperty.Get( keyValue ) ); |
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SendNotificationsL( keyValue, iStatus ); |
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} |
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|
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// Start listening again. |
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StartListening(); |
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|
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WRITELOG( "CListener::RunL - end" ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CListener::RunError |
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// Standard active object error function. From class CActive. |
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// ----------------------------------------------------------------------------- |
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// |
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#ifdef _DEBUG |
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TInt CListener::RunError( TInt aError ) |
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#else |
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TInt CListener::RunError( TInt /*aError*/ ) |
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#endif |
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{ |
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WRITELOG1( "CListener::RunError, aError: %d", aError ); |
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|
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Cancel(); |
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|
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return KErrNone; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CListener::DoCancel |
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// Standard active object cancellation function. From class CActive. |
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// ----------------------------------------------------------------------------- |
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// |
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void CListener::DoCancel() |
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{ |
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WRITELOG( "CListener::DoCancel" ); |
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|
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iProperty.Cancel(); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CListener::StartListeningL |
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// Then start listening of the changes in the key. |
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// ----------------------------------------------------------------------------- |
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// |
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void CListener::StartListening() |
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{ |
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WRITELOG( "CListener::StartListeningL - begin" ); |
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|
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if( IsActive() ) |
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{ |
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return; |
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} |
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|
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iProperty.Subscribe( iStatus ); |
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SetActive(); |
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|
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WRITELOG( "CListener::StartListeningL - end" ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CListener::SendNotificationsL |
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// Send notifications to clients. |
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// ----------------------------------------------------------------------------- |
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// |
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void CListener::SendNotificationsL( const TUint aKeyValue, |
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TRequestStatus& aStatus ) const |
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{ |
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WRITELOG( "CListener::SendNotifications - begin" ); |
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|
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// For value only. |
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for ( TInt i = iArrayForKeyValue.Count(); --i >= 0; ) |
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{ |
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iArrayForKeyValue[i]->NotifyKeyL( |
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aKeyValue, |
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iPropertyCategory, |
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iKey ); |
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} |
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|
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// For status and value. |
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for ( TInt i = iArrayForKeyAndStatus.Count(); --i >= 0; ) |
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{ |
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iArrayForKeyAndStatus[i]->NotifyKeyAndStatusL( |
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aKeyValue, |
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aStatus, |
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iPropertyCategory, |
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iKey ); |
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} |
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|
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WRITELOG( "CListener::SendNotifications - end" ); |
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} |
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|
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// End of file. |