--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/resourcemgmt/hwresourcesmgr/server/src/HWRMPSChangeObserver.cpp	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,213 @@
+// Copyright (c) 2006-2009 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:
+//
+
+
+
+
+// INCLUDE FILES
+#include "HWRMtrace.h"
+#include "HWRMPSChangeObserver.h"
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CHWRMPSChangeObserver::CHWRMPSChangeObserver
+// C++ constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CHWRMPSChangeObserver::CHWRMPSChangeObserver(MHWRMPSChangeObserver& aCallback,
+                                             const TUid& aUid,
+                                             TUint32 aKey)
+    : CActive(EPriorityStandard), 
+      iCallback(aCallback),
+      iUid(aUid),
+      iKey(aKey)
+    {
+    COMPONENT_TRACE2(_L( "HWRM Server - CHWRMPSChangeObserver::CHWRMPSChangeObserver(0x%x)" ), &aCallback);
+
+    CActiveScheduler::Add(this);
+
+    COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::CHWRMPSChangeObserver - return" ) );
+    }
+
+// -----------------------------------------------------------------------------
+// CHWRMPSChangeObserver::NewL
+// Two-phased constructor
+// -----------------------------------------------------------------------------
+//
+CHWRMPSChangeObserver* CHWRMPSChangeObserver::NewL(MHWRMPSChangeObserver& aCallback,
+                                                   const TUid& aUid,
+                                                   TUint32 aKey)
+    {
+
+    CHWRMPSChangeObserver* newInstance = NewLC(aCallback, aUid, aKey);
+	CleanupStack::Pop();
+
+	return newInstance;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CHWRMPSChangeObserver::NewLC
+// Two-phased constructor. Leaves instance to cleanup stack
+// -----------------------------------------------------------------------------
+//
+CHWRMPSChangeObserver* CHWRMPSChangeObserver::NewLC(MHWRMPSChangeObserver& aCallback,
+                                                    const TUid& aUid,
+                                                    TUint32 aKey)
+    {
+    COMPONENT_TRACE2(_L( "HWRM Server - CHWRMPSChangeObserver::NewLC(0x%x)" ), &aCallback);
+
+	CHWRMPSChangeObserver* newInstance = new (ELeave) CHWRMPSChangeObserver(aCallback, aUid, aKey);
+	CleanupStack::PushL( newInstance );
+	
+	newInstance->ConstructL();
+
+    COMPONENT_TRACE2(_L( "HWRM Server - CHWRMPSChangeObserver::NewLC - return 0x%x" ), newInstance );
+
+	return newInstance;
+    }
+
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CHWRMPSChangeObserver::~CHWRMPSChangeObserver()
+    {
+    COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::~CHWRMPSChangeObserver()" ));
+
+    // Cancel property separately, as the following Cancel() call doesn't seem to 
+    // cause DoCancel to fire.
+    iProperty.Cancel();
+
+    Cancel();
+    
+    iProperty.Close();
+
+    COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::~CHWRMPSChangeObserver - return" ) );
+    }
+
+// -----------------------------------------------------------------------------
+// CHWRMPSChangeObserver::ConstructL
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+//
+void CHWRMPSChangeObserver::ConstructL()
+    {
+    COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::ConstructL()" ));
+
+    User::LeaveIfError(iProperty.Attach(iUid, iKey));
+    
+    // Call RunL to order notification and do the initial notifying of the client
+    RunL();
+
+    COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::ConstructL - return" ) );
+    }
+
+// -----------------------------------------------------------------------------
+// CHWRMPSChangeObserver::RunL
+// Handle notification from pubsub session.
+// -----------------------------------------------------------------------------
+//
+void CHWRMPSChangeObserver::RunL()
+    {
+    COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::RunL()" ));
+
+    // Reorder notification
+    OrderNotification();
+
+    // get value from pubsub
+    TInt value(0);
+    
+    TInt err = iProperty.Get(value);
+    
+    // if no error or not found then no problem.
+    // Otherwise leave as something went wrong
+    if ( err == KErrNotFound || err == KErrNone )
+        {
+        iCallback.PSValueChanged(iUid, iKey, value);    
+        }
+    else
+        {
+        COMPONENT_TRACE2( _L( "HWRM Server - CHWRMPSChangeObserver::RunL(), err %d" ), err);
+        User::Leave(err);
+        }
+
+    COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::RunL - return" ) );
+    }
+    
+// -----------------------------------------------------------------------------
+// CHWRMPSChangeObserver::RunError
+// Handle error in RunL
+// -----------------------------------------------------------------------------
+//
+#if defined(_DEBUG) && defined(COMPONENT_TRACE_FLAG)
+TInt CHWRMPSChangeObserver::RunError(TInt aError)
+#else
+TInt CHWRMPSChangeObserver::RunError(TInt /*aError*/)
+#endif
+    {
+    COMPONENT_TRACE2(_L( "HWRM Server - CHWRMPSChangeObserver::RunError(%d)" ), aError);
+
+    // Error occurred either while reordering notification or getting property value.
+    // We can't really do anything about it, so ignore.
+    // (possible errors are KErrPermissionDenied and KErrArgument, which indicate fundamental
+    //  problem with property, and will be caught on the first RunL execution by ConstructL)
+
+    COMPONENT_TRACE2(_L( "HWRM Server - CHWRMPSChangeObserver::RunError - return %d" ), KErrNone );
+
+    return KErrNone;
+    }
+
+// -----------------------------------------------------------------------------
+// CHWRMPSChangeObserver::DoCancel
+// Handle cancel order on this active object.
+// -----------------------------------------------------------------------------
+//
+void CHWRMPSChangeObserver::DoCancel()
+    {
+    COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::DoCancel()" ));
+
+    iProperty.Cancel();
+
+    COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::DoCancel - return" ) );
+    }
+
+// -----------------------------------------------------------------------------
+// CHWRMPSChangeObserver::OrderNotification
+// Order new notification from CenRep.
+// -----------------------------------------------------------------------------
+//
+void CHWRMPSChangeObserver::OrderNotification()
+    {
+    COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::OrderNotification()" ));
+
+	if (IsActive())
+		{
+		COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::OrderNotification - returning early as already active" ) );	
+		return;
+		}
+		
+    iProperty.Subscribe(iStatus);
+    SetActive();
+
+    COMPONENT_TRACE1(_L( "HWRM Server - CHWRMPSChangeObserver::OrderNotification - return" ) );
+    }
+
+
+
+// End of File