homescreenpluginsrv/hspsmanager/src/hspsbrobserver.cpp
changeset 0 79c6a41cd166
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/homescreenpluginsrv/hspsmanager/src/hspsbrobserver.cpp	Thu Dec 17 08:54:17 2009 +0200
@@ -0,0 +1,154 @@
+/*
+* Copyright (c) 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:  Implementation of CHSPSBRObserver class
+*
+*/
+
+
+#include <sbdefs.h>
+#include "hspsbrobserver.h"
+#include "hspsthemeserver.h"
+
+
+// ======== LOCAL FUNCTIONS ====================================================
+
+
+// ======== MEMBER FUNCTIONS ===================================================
+
+
+// -----------------------------------------------------------------------------
+// CHSPSBRObserver::CHSPSBRObserver
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CHSPSBRObserver::CHSPSBRObserver( ChspsThemeServer& aServer ):
+    CActive(CActive::EPriorityStandard),
+    iServer( aServer )
+    {
+    CActiveScheduler::Add( this );
+    }
+
+// -----------------------------------------------------------------------------
+// CHSPSBRObserver::ConstructL
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+//
+void CHSPSBRObserver::ConstructL()
+    {
+    User::LeaveIfError( iProperty.Attach( 
+        KUidSystemCategory, 
+        conn::KUidBackupRestoreKey ) );
+    }
+                    
+// -----------------------------------------------------------------------------
+// CHSPSBRObserver::NewL
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CHSPSBRObserver* CHSPSBRObserver::NewL( ChspsThemeServer& aServer )
+    {
+    CHSPSBRObserver* self = new( ELeave ) CHSPSBRObserver( aServer );
+    
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+
+    return self;
+    }
+
+    
+// Destructor
+CHSPSBRObserver::~CHSPSBRObserver()
+    {
+    Cancel();
+    iProperty.Close();
+    }
+
+
+// -----------------------------------------------------------------------------
+// CHSPSBRObserver::Start
+// Start the system agent to listen to the event
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CHSPSBRObserver::Start()
+    {
+    Cancel();
+    iProperty.Subscribe( iStatus );
+    SetActive();
+    }
+
+
+// -----------------------------------------------------------------------------                        
+// CHSPSBRObserver::RunError
+// -----------------------------------------------------------------------------
+//  
+TInt CHSPSBRObserver::RunError(TInt aError)
+    {
+    if( aError != KErrCancel )
+        {
+        Start();           
+        }
+    else 
+        {
+        Cancel();
+        iProperty.Close();    
+        }
+    return KErrNone;
+    };
+
+
+// -----------------------------------------------------------------------------
+// CHSPSBRObserver::RunL
+// from CActive
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CHSPSBRObserver::RunL()
+    {
+    // Resubscribe before processing new value to prevent missing updates
+    TInt backupStatus = 0;
+    TInt err( iStatus.Int() );
+    if ( err == KErrNone )
+        {
+        Start();
+        User::LeaveIfError( iProperty.Get( 
+                KUidSystemCategory, 
+                conn::KUidBackupRestoreKey, backupStatus ) );
+        // Forward backup status to listening server
+        iServer.HandleBREventL( backupStatus );
+        }
+    else if ( err != KErrCancel ) // Ignore all errors except cancel
+        {
+        Start();
+        }
+    else // When cancel occurs, stop everything
+        {
+        User::Leave( KErrCancel );    
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CHSPSBRObserver::DoCancel
+// From CActive
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CHSPSBRObserver::DoCancel()
+    {
+    iProperty.Cancel();
+    }
+
+// End of file