/*

* Copyright (c) 1997-1999 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 "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

* which accompanies this distribution, and is available

* at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#if !defined(__EIKSBOBS_H__)

#define __EIKSBOBS_H__

/**

 *

 * Scroll bar events enumerations 

 *

 * Touch events for scroll bar. Reported to scroll bar observer through 

 * HandleScrollEventL method.

 *

 *  @since S60 0.9

 */

enum TEikScrollEvent

    {

    EEikScrollLeft=1, /** stulys was tapped on the left arrow of the scroll bar */

    EEikScrollUp, /** stulys was tapped on the up arrow of the scroll bar */

    EEikScrollRight, /** stulys was tapped on the right arrow of the scroll bar */

    EEikScrollDown, /** stulys was tapped on the down arrow of the scroll bar */

    EEikScrollPageLeft, /** stulys was tapped on left side of the scroll bar */

    EEikScrollPageUp, /** stulys was tapped above the scroll bar */

    EEikScrollPageRight, /** stulys was tapped on right side of the scroll bar */

    EEikScrollPageDown, /** stulys was tapped below the scroll bar */

    EEikScrollHome, /** @deprecated */

    EEikScrollTop, /** @deprecated */

    EEikScrollEnd, /** @deprecated */

    EEikScrollBottom, /** @deprecated */

    EEikScrollThumbDragHoriz, /** stulys is down on scroll bar thumb and dragged */

    EEikScrollThumbDragVert, /** stulys is down on scroll bar thumb and dragged */

    EEikScrollThumbReleaseHoriz, /** scrollbar thumb drag is stopped */

    EEikScrollThumbReleaseVert /** scrollbar thumb drag is stopped */

    };

class CEikScrollBar;

/**

 * Scroll bar observer interface

 *

 * Scroll bar clients can registers itself to observe scroll bar events. 

 * The scroll bar sends an event to the observer every time a touch event 

 * happens for the scroll bar.

 *

 * Clients should derive from MEikScrollBarObserver interface to get scroll bar events. 

 *

 *  @lib eikcoctl.lib

 *  @since S60 0.9

 */

class MEikScrollBarObserver

    {

public:

    /**

     * Callback method for scroll bar events

     *

     * Scroll bar observer should implement this method to get scroll bar events.

     *

     * @since S60 0.9

     * @param aScrollBar A pointer to scrollbar which created the event

     * @param aEventType The event occured on the scroll bar

     */

    virtual void HandleScrollEventL(CEikScrollBar* aScrollBar, TEikScrollEvent aEventType)=0;

    };

#endif // __EIKSBOBS_H__