/*

* Copyright (c) 2008-2009 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:    Media item list observer interface 

*

*/

#ifndef GLXTOOLBARCONTROLLER_H

#define GLXTOOLBARCONTROLLER_H

#include <mglxmedialistobserver.h>

#include <akntoolbar.h>             // For Toolbar

NONSHARABLE_CLASS( CGlxToolbarController ): public CBase, public MGlxMediaListObserver

    {

public:

    /*

     * function NewL

     */

    static CGlxToolbarController* NewL ();

    /*

     * Adds object of CGlxToolbar to observe medialist

     * @param aList Reference of MGlxMediaList 

     */

    void AddToObserverL(MGlxMediaList& aList, CAknToolbar* aToolbar);

    /*

     * Removes object of CGlxToolbar from medialist observer

     * @param aList Reference of MGlxMediaList

     */

    void RemoveFromObserver (MGlxMediaList& aList);

    /**

     * Sets toolbar status.This is called after adding CGlxToolbarController

     * to medialist observer, if there is no HandleAttributeAvailable callback.

     * (This is done to activate toolbar when attributes are already available in cache)

     * @param aList Pointer to MGlxMediaList

     */

    void SetStatusOnViewActivationL( MGlxMediaList* aList );

    /*

     * Sets the toolbar status on every attribute available callback. 

     * If attributes not available, but there are items, then this call is forced

     * by SetStatusOnViewActivationL from MediaListViewBase

     * @param aList Pointer og MGlxMediaList

     */

    void SetStatusL( MGlxMediaList* aList );

    /*

     * Destructor

     */

    ~CGlxToolbarController();

public: //From MGlxMediaListObserver  

    void HandleItemAddedL(TInt aStartIndex, TInt aEndIndex, MGlxMediaList* aList);

    void HandleMediaL(TInt aListIndex, MGlxMediaList* aList);

    void HandleItemRemovedL(TInt aStartIndex, TInt aEndIndex, MGlxMediaList* aList);

    void HandleItemModifiedL(const RArray<TInt>& aItemIndexes, MGlxMediaList* aList);

    void HandleAttributesAvailableL(TInt aItemIndex, const RArray<TMPXAttribute>& aAttributes,

            MGlxMediaList* aList);

    void HandleFocusChangedL(NGlxListDefs::TFocusChangeType aType, TInt aNewIndex, 

            TInt aOldIndex, MGlxMediaList* aList);

    void HandleItemSelectedL(TInt aIndex, TBool aSelected, MGlxMediaList* aList);

    void HandleMessageL(const CMPXMessage& aMessage, MGlxMediaList* aList);

    void HandlePopulatedL( MGlxMediaList* aList );

private:

    /*

     * Default Constructor

     */

    CGlxToolbarController();

    /* Enables or disables latching on the toolbar button.

     * Used in Marking mode.

     * @param aCommandId The Command on toolbar that needs to be latched/unlatched.

     * aLatched ETrue if the command button needs to be latched. 

     */

    void EnableLatch( TInt aCommandId, TInt aLatched );

    /*

     * Set toolbar items dimmed.

     * @param aDimmed Flag for the toolbar items to be dimmed.

     */

    void SetToolbarItemsDimmed(TBool aDimmed);

private:    

    CAknToolbar* iToolbar;

    TBool iAttributeAvailable;

    };

#endif /*GLXTOOLBARCONTROLLER_H*/