accessoryservices/accessoryserver/src/ChargerContext/AccSrvPSIntPropertyWatch.cpp
changeset 0 4e1aa6a622a0
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/accessoryservices/accessoryserver/src/ChargerContext/AccSrvPSIntPropertyWatch.cpp	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,212 @@
+/*
+* Copyright (c) 2008-2008 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:  A class to watch changes of a integer property.
+*
+*/
+
+
+
+#include    <e32base.h>
+#include    <e32def.h>
+
+
+#include "AccSrvPSIntPropertyWatch.h"
+#include "acc_debug.h"
+
+
+// ======== LOCAL FUNCTIONS ========
+
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------
+// Symbian two-phased constructor
+// ---------------------------------------------------------
+//
+CAccSrvPSIntPropertyWatch* CAccSrvPSIntPropertyWatch::NewL(
+        MAccSrvPSIntPropertyObserver*   aObserver,
+        TUid    aCategory,
+        TInt    aKey,
+        TOwnerType aType )
+    {
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::NewL()" );
+    CAccSrvPSIntPropertyWatch* self = new ( ELeave ) CAccSrvPSIntPropertyWatch();
+    CleanupStack::PushL( self );
+    self->ConstructL( aObserver, aCategory, aKey, aType );
+    CleanupStack::Pop( self );
+    COM_TRACE_1( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::NewL - return %p", self );
+    return self;
+    }
+
+
+// ---------------------------------------------------------------------------
+// Symbian two-phased constructor
+// ---------------------------------------------------------------------------
+//
+CAccSrvPSIntPropertyWatch* CAccSrvPSIntPropertyWatch::NewLC(
+        MAccSrvPSIntPropertyObserver*   aObserver,
+        TUid    aCategory,
+        TInt    aKey,
+        TOwnerType aType )
+    {
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::NewLC()" );
+    CAccSrvPSIntPropertyWatch* self = new( ELeave ) CAccSrvPSIntPropertyWatch;
+    CleanupStack::PushL( self );
+    self->ConstructL( aObserver, aCategory, aKey, aType );
+    COM_TRACE_1( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::NewLC - return %p", self );
+    return self;
+    }
+
+
+// ---------------------------------------------------------
+// Destructor
+// ---------------------------------------------------------
+//
+CAccSrvPSIntPropertyWatch::~CAccSrvPSIntPropertyWatch()
+    {
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::~CAccSrvPSIntPropertyWatch()" );
+    Cancel();
+    iProperty.Close();
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::~CAccSrvPSIntPropertyWatch" );
+    }
+
+// ---------------------------------------------------------
+// SubscribeNotification
+// ---------------------------------------------------------
+//
+void CAccSrvPSIntPropertyWatch::Watch()
+    {
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::Watch()" );
+    iProperty.Subscribe(iStatus);
+    SetActive();
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::Watch - return void" );
+    return;
+    }
+
+
+// ---------------------------------------------------------
+// Get current value.
+// ---------------------------------------------------------
+//
+TInt CAccSrvPSIntPropertyWatch::GetCurrentValue( TInt& aValue)
+    {
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::GetCurrentValue()" );
+    TInt value = 0;
+    TInt error( iProperty.Get( value ) );
+    if ( KErrNone == error )
+        {
+        // use new value ...
+        COM_TRACE_1( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::GetCurrentValue - value 0x%x", value );
+        aValue = value;
+        }
+    else if ( KErrNotFound == error )
+        {
+        // property deleted, do necessary actions here...
+        iObserver->PSPropertyDeleted( iCategory, iKey );
+        }
+    COM_TRACE_1( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::GetCurrentValue - return aError %d", error );
+    return error;
+    }
+
+
+// ---------------------------------------------------------
+// From class CActive.
+// DoCancel
+// ---------------------------------------------------------
+//
+void CAccSrvPSIntPropertyWatch::DoCancel()
+    {
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::DoCancel()" );
+    iProperty.Cancel();
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::DoCancel - return void" );
+    }
+
+
+// ---------------------------------------------------------
+// C++ constructor
+// ---------------------------------------------------------
+//
+CAccSrvPSIntPropertyWatch::CAccSrvPSIntPropertyWatch()
+    :CActive ( EPriority )
+    {
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::CAccSrvPSIntPropertyWatch()" );
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::CAccSrvPSIntPropertyWatch - return" );
+    }
+
+
+// ---------------------------------------------------------
+// ConstructL
+// ---------------------------------------------------------
+//
+void CAccSrvPSIntPropertyWatch::ConstructL(
+        MAccSrvPSIntPropertyObserver*   aObserver,
+        TUid    aCategory,
+        TInt    aKey,
+        TOwnerType aType )
+    {
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::ConstructL()" );
+    iObserver = aObserver;
+    iCategory = aCategory;
+    iKey = aKey;    
+    User::LeaveIfError( iProperty.Attach(iCategory,iKey, aType ) );
+    CActiveScheduler::Add(this);
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::ConstructL - return void" );
+    return;
+   }
+
+// ---------------------------------------------------------
+// From class CActive.
+// RunL
+// ---------------------------------------------------------
+//
+void CAccSrvPSIntPropertyWatch::RunL()
+    {
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::RunL()" );
+
+    // resubscribe before processing new value to prevent missing updates
+    iProperty.Subscribe(iStatus);
+    SetActive();
+    // property updated, get new value
+    TInt value;
+    if ( iProperty.Get( value ) == KErrNotFound )
+        {
+        // property deleted, do necessary actions here...
+        iObserver->PSPropertyDeleted( iCategory, iKey );
+        }
+    else
+        {
+        // use new value ...
+        iObserver->PSPropertyChanged( iCategory, iKey, value );
+        }
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::RunL - return void" );
+    }
+
+
+// ---------------------------------------------------------
+// From class CActive.
+// RunL
+// ---------------------------------------------------------
+//
+TInt CAccSrvPSIntPropertyWatch::RunError( TInt aError )
+    {
+    COM_TRACE_( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::RunError()" );
+    // Avoid Panic in CActiveScheduler
+    aError = KErrNone;
+    COM_TRACE_1( "[AccFW:AccServer] CAccSrvPSIntPropertyWatch::RunError - return aError %d", aError );
+    return aError;
+    }
+
+
+// ======== GLOBAL FUNCTIONS ========
+