/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:  Handle scrollbar and tab events

*

*/

#ifndef BRCTLLAYOUTOBSERVERIMPL_H

#define BRCTLLAYOUTOBSERVERIMPL_H

//  INCLUDES

#include <brctllayoutobserver.h>

//  Forward Declaration

class WebView;

/**

*  This observer is notified of scrolling and tabbing events

*

*  @lib BrowserEngine.lib

*  @since 2.8

*/

class CBrCtlLayoutObserver : public CBase, public MBrCtlLayoutObserver

    {

    public: // From MBrCtlLayoutObserverImpl

        /**

        * Update the position of vertical scrollbar.

        * @since 2.8

        * @param aDocumentHeight The total height of the markup page

        * @param aDisplayHeight The height of the display

        * @param aDisplayPosY The current Y position

        * @return void

        */

        virtual void UpdateBrowserVScrollBarL(TInt /*aDocumentHeight*/, 

                                              TInt /*aDisplayHeight*/,

                                              TInt /*aDisplayPosY*/ ) {}

        /**

        * Update the position of horizontal scrollbar.

        * @since 2.8

        * @param aDocumentWidth The total width of the markup page

        * @param aDisplayWidth The width of the display

        * @param aDisplayPosX The current X position

        * @return void

        */

        virtual void UpdateBrowserHScrollBarL(TInt /*aDocumentWidth*/, 

                                              TInt /*aDisplayWidth*/,

                                              TInt /*aDisplayPosX*/ ) {}

        /**

        * Inform the layout of the page: right to left or left to right. Useful when the application draws the scrollbar itself.

        * @since 2.8

        * @param aNewLayout RTL or LTR

        * @return void

        */

        virtual void NotifyLayoutChange( TBrCtlLayout  aNewLayout );

        /**

        * Update the title of the page in history view

        * @since 3.0

        * @param aTitle Title of the page

        * @return void

        */

        virtual void UpdateTitleL( const TDesC& /*aTitle*/ ) {}        

    public:

        /**

        * C++ default constructor.

        */

        CBrCtlLayoutObserver( WebView* aWebView );

    private:

       WebView*     m_webView;

    };

#endif      // BRCTLLAYOUTOBSERVERIMPL_H

// End of File