/*

* 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:  Widget extension adapter

*

*/

#ifndef __XNWIDGETEXTENSIONADAPTER_H__

#define __XNWIDGETEXTENSIONADAPTER_H__

// System includes

#include <e32base.h>

// User includes

#include "xncontroladapter.h"

#include "xnuistatelistener.h"

// Forward declarations

class CXnAppUiAdapter;

class CXnNode;

class CXnUiEngine;

// CLASS DECLARATION

/**

*  @ingroup group_xnlayoutengine

*  Popup Control adapter interface class

*  @lib xnlayoutengine.lib

*  @since Series 60 5.0

*/

NONSHARABLE_CLASS( CXnWidgetExtensionAdapter ) : public CXnControlAdapter, 

    public MXnUiStateObserver,

    public MXnUiResourceChangeObserver

    {

public: // Constructors and destructor

    enum TPositionHint

           {

           ENone,

           EAboveLeft,

           EAboveRight,

           EBelowLeft,

           EBelowRight,

           ELeft,

           ERight

           };

    /**

    * Two-phased constructor.

    */

    static CXnWidgetExtensionAdapter* NewL( CXnNodePluginIf& aNode );

    /**

    * Destructor.

    */

    ~CXnWidgetExtensionAdapter();

public:

    /**

     * From CCoeAppUiBase.

     * Informs the components about the screen layout switch.

     */

     void HandleScreenDeviceChangedL();

private: 

    // Functions from base classes    

    /**

    * @see CCoeControl documentation        

    */         

    void MakeVisible( TBool aVisible );

    /**

    * see CCoeControl 

    */

    void HandlePointerEventL( const TPointerEvent& aPointerEvent );

    /**

    * see CCoeControl 

    */

    void Draw( const TRect& aRect ) const;        

    /**

     * From CCoeControl.

     * Size change notification

     */

    void SizeChanged();

private:

    // from MXnUiStateObserver

    /**

     * @see MXnUiStateObserver

     */

    void NotifyForegroundChanged( TForegroundStatus aStatus );         

    /**

     * @see MXnUiStateObserver

     */    

    void NotifyLightStatusChanged( TBool aLightsOn );

    /**

     * @see MXnUiStateObserver

     */    

    void NotifyInCallStateChaged( TBool aInCall );

private:

    // from MXnUiResourceChangeObserver

    /**

     * @see MXnUiResourceChangeObserver

     */

    void NotifyStatusPaneSizeChanged();

    /**

     * @see MXnUiResourceChangeObserver

     */

    void NotifyResourceChanged( TInt aType );

private: 

    // Constructors

    /**

    * C++ default constructor.

    */

    CXnWidgetExtensionAdapter( CXnNodePluginIf& aNode );

    /**

    * Two-phased constructor.        

    */ 

    void ConstructL();	   

private: 

    // New functions

    void HidePopupL();

    void ChangePopupPosition();

    void CalculatePosition();

private:    

    // Data

    /** UiEngine, not owned */

    CXnUiEngine* iUiEngine; 	    

    /** Position hint */

    TPositionHint iPositionHint;

    /** Node, not owned */

    CXnNodePluginIf& iNode;    

    /** AppUi, not owned */

    CXnAppUiAdapter* iAppUiAdapter;

    /** Flag to indicate whether <popup> is permanent */

    TBool iPermanent;

    /** Is popup element */

    TBool iPopup;

	};

#endif // __XNWIDGETEXTENSIONADAPTER_H__

// End of File