--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/idlehomescreen/inc/xnpropertysubscriber.h Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,128 @@
+/*
+* 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:
+* Subscribes properties from P&S
+ *
+*/
+
+#ifndef XNPROPERTYSUBSCRIBER_H
+#define XNPROPERTYSUBSCRIBER_H
+
+// System includes
+#include <e32base.h>
+#include <e32property.h>
+
+// Class declaration
+/**
+ * Observer for property change.
+ */
+class MXnPropertyChangeObserver
+ {
+public:
+ /**
+ * Property changed
+ *
+ * @since S60 5.1
+ * @param aKey key value
+ * @param aValue property value
+ */
+ virtual void PropertyChangedL( const TUint32 aKey, const TInt aValue ) = 0;
+ };
+
+/**
+ * Subcribes property from P&S and listen property changes
+ *
+ * @ingroup group_xnlayoutengine
+ * @lib xn3layoutengine.lib
+ * @since Series 60 5.0
+ */
+NONSHARABLE_CLASS( CXnPropertySubscriber ) : public CActive
+ {
+public:
+ /**
+ * Cancel and destroy
+ */
+ ~CXnPropertySubscriber();
+
+ /**
+ * Two-phased constructor.
+ *
+ * @param aUid P&S property category
+ * @param aKey P&S property key
+ * @param aObserver Given property change observer
+ */
+ static CXnPropertySubscriber* NewL(
+ const TUid aUid,
+ const TUint32 aKey,
+ MXnPropertyChangeObserver& aObserver );
+
+ /**
+ * Two-phased constructor.
+ *
+ * @param aUid P&S property category
+ * @param aKey P&S property key
+ * @param aObserver Given property change observer
+ */
+ static CXnPropertySubscriber* NewLC(
+ const TUid aUid,
+ const TUint32 aKey,
+ MXnPropertyChangeObserver& aObserver );
+
+private:
+ /**
+ * C++ constructor
+ */
+ CXnPropertySubscriber(
+ MXnPropertyChangeObserver& aObserver,
+ const TUint32 aKey );
+
+ /**
+ * Second-phase constructor
+ */
+ void ConstructL( const TUid aUid, const TUint32 aKey );
+
+private:
+ /**
+ * From CActive.
+ * Handle completion
+ */
+ void RunL();
+
+ /**
+ * From CActive.
+ * How to cancel me
+ */
+ void DoCancel();
+
+private:
+ // Data
+
+ /**
+ * Observer for property changes.
+ * Not own
+ */
+ MXnPropertyChangeObserver& iPropertyChangeObserver;
+
+ /**
+ * Property to listen
+ */
+ RProperty iProperty;
+
+ /**
+ * P&S property key
+ */
+ TUint32 iKey;
+ };
+
+#endif