/*

* Copyright (c) 2002-2006 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:  Interface class for CXnNewsticker.

*

*/

#ifndef _XNNEWSTICKER_H

#define _XNNEWSTICKER_H

//  INCLUDES

#include "xncomponent.h"

#include "mxncomponentinterface.h"

class CGulIcon;

// CLASS DECLARATION

/**

*  Component UI factory interface for creating newsticker text element.

*

*  @lib xnnewstickerfactory.dll

*  @since Series 60 3.2

*/

namespace XnNewstickerInterface

{

_LIT8(KType, "newsticker");

class MXnNewstickerCallbackInterface

    {

    public: // New functions

        /**

         * Called when the title has been shown and is now offscreen.

         * @param aTitleIndex The title that has been completely shown.

         */

        virtual void TitleScrolled(TInt aTitleIndex) = 0;

    };

class MXnNewstickerInterface : public XnComponentInterface::MXnComponentInterface

    {

    public: // New functions

        static inline const TDesC8& Type()

            {

            return KType;

            }

        /**

         * Append new title to the end of the title list.

         * @param aTitle The new title to add.

         */

        virtual void AppendTitleL(const TDesC& aTitle) = 0;

        /**

         * Insert new title to the end of the title list.

         * @param aTitle The new title to add.

         * @param aIndex The place to add the title.

         */

        virtual void InsertTitleL(const TDesC& aTitle, TInt aIndex) = 0;

        /**

         * Update title text.

         * @param aTitle The new title to add.

         * @param aIndex The place to update the title.

         */

        virtual void UpdateTitleL(const TDesC& aTitle, TInt aIndex) = 0;

        /**

         * Delete the title.

         * @param aIndex The title index to delete.

         */

        virtual void DeleteTitle(TInt aIndex) = 0;

    	/**

    	 * Returns index of the currently selected title.

    	 * @return The index of the current title.

    	 */

        virtual TInt CurrentTitleIndex() = 0;

    	/**

    	 * Return the title of the given index.

    	 * @param aIndex The index to return the title.

    	 * @return The title of the given index.

    	 */

        virtual const TDesC& Title(TInt aIndex) = 0;

        /**

         * Delete all titles.

         */

        virtual void ClearTitles() = 0;

        /**

         * Set callback interface.

         * @param aCallback The callback interface pointer.

         */

        virtual void SetCallbackInterfaceL(MXnNewstickerCallbackInterface* aCallback) = 0;

    };

}

/**

* @ingroup group_xnnewstickerfactory

* 

*  Newsticker class implementation.

*

*  @lib xnnewstickerfactory.dll

*  @since Series 60 3.2

*/

class CXnNewsticker : public CXnComponent, public XnNewstickerInterface::MXnNewstickerInterface

    {

    public:

    	/**

    	 * 2 phase construction.

    	 */

    	static CXnNewsticker* NewL();

    	/**

    	 * Destructor.

    	 */

    	virtual ~CXnNewsticker();

    public:

         // Routed from MXnNewstickerInterface.

        /**

         * Append new title to the end of the title list.

         * @param aTitle The new title to add.

         */

        void AppendTitleL(const TDesC& aTitle);

        /**

         * Insert new title to the end of the title list.

         * @param aTitle The new title to add.

         * @param aIndex The place to add the title.

         */

        void InsertTitleL(const TDesC& aTitle, TInt aIndex);

        /**

         * Update title text.

         * @param aTitle The new title to add.

         * @param aIndex The place to update the title.

         */

        void UpdateTitleL(const TDesC& aTitle, TInt aIndex);

        /**

         * Delete the title.

         * @param aIndex The title index to delete.

         */

        void DeleteTitle(TInt aIndex);

    	/**

    	 * Returns index of the currently selected title.

    	 * @return The index of the current title.

    	 */

        TInt CurrentTitleIndex();

    	/**

    	 * Return the title of the given index.

    	 * @param aIndex The index to return the title.

    	 * @return The title of the given index.

    	 */

        const TDesC& Title(TInt aIndex);

        /**

         * Delete all titles.

         */

        void ClearTitles();

        /**

         * Append the SVG title to be shown.

         * @param aByteData The SVG data.

         */

        void AppendSvgTitleL(const TDesC8& aByteData);

        /**

         * Insert the SVG title to be shown.

         * @param aByteData The SVG data.

         */

        void InsertSvgTitleL(const TDesC8& aByteData, TInt aIndex);

        /**

         * Set callback interface.

         * @param aCallback The callback interface pointer.

         */

        void SetCallbackInterfaceL(

            XnNewstickerInterface::MXnNewstickerCallbackInterface* aCallback);

	   	/**

        * Create a component interface according to the given type.

        * @param aType Type of the interface to create

        * @return Created interface or NULL if the provided type is not supported.

        */ 

        virtual XnComponentInterface::MXnComponentInterface* MakeInterfaceL(

            const TDesC8& aType);        

    private:

    	CXnNewsticker();

    	void ConstructL();

    };

#endif      // _XNNEWSTICKER_H

// End of File