/*

 * Copyright (c) 2007 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:  Take care of touch event handling and component states.

 *

 */

#ifndef C_EUIEMAILLISTTOUCHMANAGER_H

#define C_EUIEMAILLISTTOUCHMANAGER_H

#include <e32base.h>

#include "fscontrolbarobserver.h"

#include "fstreelistobserver.h"

class CFSEmailUiMailListVisualiser;

/**

 *  Part of FreestyleEmailUi application.

 *  Helper class for touch management to handling different touch events. 

 *

 *  @code

 *   CEUiEmailListTouchManager* manager = CEUiEmailListTouchManager::NewL(*this); 

 *   CFsControlBar* controlBar = CFsControlBar::NewL( iEnv );

 *   controlBar->AddObserverL( *manager );

 *  @endcode

 *

 *  @lib FreestyleEmailUi.exe

 *  @since S60 v9.1

 */

class CEUiEmailListTouchManager : public CBase,

        public MFsControlBarObserver,

        public MFsTreeListObserver

    {

public:

    /**

     * Two-phased constructor.

     * 

     * @param aVisualiser Reference to the mail list visualiser.

     */

    static CEUiEmailListTouchManager* NewL(

            CFSEmailUiMailListVisualiser& aVisualiser);

    /**

     * Destructor.

     */

    ~CEUiEmailListTouchManager();

    /**

     * Disable/Activate manager

     *

     * @since S60 v9.1

     * @param TBool for state. 

     */

    void SetDisabled(TBool aState);

private:

    // from base class MFsControlBarObserver

    /**

     * From MFsControlBarObserver.

     * Invoked when event occurs.

     *

     * @param aEvent event type.

     * @param aData additional data. For EButton - id of pressed button.

     */

    void HandleControlBarEvent(TFsControlBarEvent aEvent, TInt aData);

    // from base class MFsTreeListObserver

    /**

     * From MFsTreeListObserver.

     * Observer of the tree list is notified of changes in the tree list

     * through this function.

     * 

     * @param aEvent Event which happend in the tree list.

     * @param aId Id of the node/item associated with the event. KFsTreeNoneID

     *            means that the event is not associated with a node/item.

     */

    void TreeListEventL( const TFsTreeListEvent aEvent,

                         const TFsTreeItemId aId,

                         const TPoint& aPoint );

private:

    CEUiEmailListTouchManager(CFSEmailUiMailListVisualiser& aVisualiser);

    void ConstructL();

    /**

     * Helper class for handling long tap actions. 

     *

     * @since S60 v9.1

     * @param aPoint Coordinates of the long tap event.

     */

    void DoHandleLongTapL( const TPoint& aPoint );

    /**

     * Helper class for handling actions. (Open viewer, expand/collapse etc.)

     * 

     * @since S60 v9.1

     * @param TInt used for pass which folderlist or shortlist should be opened.    

     */

    void DoHandleActionL(TInt aData = 0);

    /**

     * Helper class for changing focus.  

     *

     * @since S60 v9.1		 

     */

    void DoHandleTreelistFocusChangeL();

private:

    // data

    /**

     * Mail list visualise

     * Not own.

     */

    CFSEmailUiMailListVisualiser& iVisualiser;

    /**

     * Disable actions. Used when folderlist is launched. 

     */

    TBool iDisableActions;

    };

#endif //C_EUIEMAILLISTTOUCHMANAGER_H