diff -r 000000000000 -r 2e3d3ce01487 contextframework/cfwplugins/displaysourceplugin/inc/displayserviceuilayout.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contextframework/cfwplugins/displaysourceplugin/inc/displayserviceuilayout.h	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,212 @@
+/*
+* Copyright (c) 2009-2009 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:   CDisplayServiceUILayout class declaration.
+*
+*/
+
+
+#ifndef DISPLAYSERVICEUILAYOUT_H
+#define DISPLAYSERVICEUILAYOUT_H
+
+// SYSTEM INCLUDE FILES
+#include <w32std.h>
+
+// USER INCLUDE FILES
+#include "displayservicebase.h"
+#include "displaysourcecontextdef.h"
+
+// FORWARD DECLARATIONS
+class CApaWindowGroupName;
+
+// DATA TYPES
+
+// CLASS DECLARATION
+
+/**
+ * Ws event observer.
+ */
+NONSHARABLE_CLASS( MWsEventObserver )
+    {
+public:
+
+    /**
+     * Handles window server event.
+     * 
+     * @since S60 5.0
+     * @param aEvent New window server event.
+     * @return None.
+     */
+    virtual void HandleWsEventL( const TWsEvent &aEvent ) = 0;
+    
+    /**
+     * Handle error occured in window server event.
+     * 
+     * @since S60 5.0
+     * @param aEvent New window server event.
+     * @return None.
+     */
+    virtual void HandleWsEventErrorL( TInt aError ) = 0;
+    };
+
+/**
+ * Listens events from window server and forwards them to observer.
+ */
+NONSHARABLE_CLASS( CWsEventHandler ): public CActive
+    {
+public:
+
+    /**
+     * Symbian two phased constructors.
+     *
+     * @since S60 5.0
+     * @param None.
+     * @return CDisplayServiceUILayout
+     */
+    static CWsEventHandler* NewL( MWsEventObserver& aObserver );
+    static CWsEventHandler* NewLC( MWsEventObserver& aObserver );
+
+    /**
+     * C++ destructor.
+     */
+    virtual ~CWsEventHandler();
+    
+public:
+    
+    /**
+     * Start event listening.
+     * 
+     * @since S60 5.0
+     * @param None.
+     * @return None.
+     */
+    void IssueRequest();
+    
+    /**
+     * Resolve current UI layout mode.
+     * 
+     * @since S60 5.0
+     * @param aLayout Current UI layout mode.
+     * @param aRotation Current UI rotation.
+     * @return TDisplayUILayoutValues.
+     */
+    void ResolveUILayout( TDisplayUILayoutValues& aLayout,
+        CFbsBitGc::TGraphicsOrientation& aRotation ) const;
+    
+protected:
+    
+    // @see CActive
+    virtual void RunL();
+    
+    // @see CActive
+    virtual void DoCancel(); 
+    
+    // @see CActive
+    virtual TInt RunError( TInt aError ); 
+    
+private:
+
+    CWsEventHandler( MWsEventObserver& aObserver );
+    void ConstructL();
+
+private: // Data
+    
+    /** Observer */
+    MWsEventObserver& iObserver;
+
+    /** Window server session */
+    RWsSession iWsSession;
+    
+    /** Window group for receiving window server events */
+    RWindowGroup* iWindowGroup;
+    
+    /** Window group name to hide it from the task manager */
+    CApaWindowGroupName* iWindowGroupName;
+    
+    /** Screen device */
+    CWsScreenDevice* iWsScreenDevice;
+    };
+        
+/**
+ * UI Layout service provides information about the current UI layout.
+ * I.e. if the current UI layout for the application is portrait or landscape.
+ *
+ * @lib None.
+ * @since S60 5.0
+ */
+NONSHARABLE_CLASS( CDisplayServiceUILayout ): public CDisplayServiceBase,
+public MWsEventObserver
+    {
+public:
+
+    /**
+     * Symbian two phased constructors.
+     *
+     * @since S60 5.0
+     * @param None.
+     * @return CDisplayServiceUILayout
+     */
+    static CDisplayServiceUILayout* NewL( MCFContextInterface& aCF );
+    static CDisplayServiceUILayout* NewLC( MCFContextInterface& aCF );
+
+    /**
+     * C++ destructor.
+     */
+    virtual ~CDisplayServiceUILayout();
+
+public: // From base classes
+    
+    // @see CDisplayServiceBase
+    virtual void StartL();
+
+    // @see CDisplayServiceBase
+    virtual void Stop();
+    
+    // @see MWsEventObserver
+    virtual void HandleWsEventL( const TWsEvent &aEvent );
+    
+    // @see MWsEventObserver
+    virtual void HandleWsEventErrorL( TInt aError );
+    
+private:
+    
+    /**
+     * Publish UI layout mode context.
+     */
+    void PublishContextL( TDisplayUILayoutValues aLayout,
+        TBool aForce = EFalse );
+    
+    /**
+     * Publish UI rotation context.
+     */
+    void PublishContextL( CFbsBitGc::TGraphicsOrientation aRotation,
+        TBool aForce = EFalse  );
+
+private:
+
+    CDisplayServiceUILayout( MCFContextInterface& aCF );
+    void ConstructL();
+
+private: // Data
+    
+    /** Window server event handler */
+    CWsEventHandler* iWsEventHandler;
+    
+    /** Current UI layout */
+    TDisplayUILayoutValues iCurrentLayout;
+    
+    /** Current UI rotation */
+    CFbsBitGc::TGraphicsOrientation iCurrentRotation;
+    };
+
+#endif // DISPLAYSERVICEUILAYOUT_H