/*

* Copyright (c) 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: Marking mode handler.

*

*/

#ifndef C_AKNMARKINGMODE_H

#define C_AKNMARKINGMODE_H

#include <e32base.h>

class CAknNavigationDecorator;

class CAknItemActionMenu;

class MAknCollection;

class MAknMarkingCollection;

typedef RPointerArray<MAknCollection> CollectionArray;

/**

 * Marking mode handler.

 *

 * @lib eikcoctl

 * @since S60 v5.2

 */

NONSHARABLE_CLASS( CAknMarkingMode ) : public CBase

    {

public:

    /**

     * Two-phased constructor.

     */

    static CAknMarkingMode* NewL(

            CAknItemActionMenu& aItemActionMenu,

            CollectionArray& aArray );

    /**

     * Destructor.

     */

    virtual ~CAknMarkingMode();

    /**

     * Sets visible collection multiple marking state.

     *

     * @internal

     * @param aActive ETrue if multiple marking should be active.

     */

    /**

     * Ends marking mode if collection allows it

     */

    void TryExitMarkingMode();

    /**

     * Returns ETrue if multiple marking state is active.

     *

     * @internal

     * @return ETrue if multiple marking is active.

     */

    TBool MultipleMarkingActive() const;

    /**

     * Returns ETrue if there are marked items in visible list that is

     * in multiple marking state.

     *

     * @internal

     * @return ETrue if items are currently marked.

     */

    TBool MarkedItems() const;

    /**

     * Returns ETrue if the collection has no items

     * 

     * @internal

     * @return ETrue if there are no items

     */

    TBool CollectionEmpty() const;

    /**

     * Marks all items in the collection.

     */

    void MarkAllL();

    /**

     * Unmarks all items in the collection.

     */

    void UnmarkAll();

    /**

     * Marks the currently selected item in the collection.

     */

    void MarkCurrentItemL();

    /**

     * Returns ETrue if current item can be marked

     * 

     * @internal

     * @return ETrue if current item can be marked

     */

    TBool CurrentItemMarkable();

private:

    /**

     * C++ constructor.

     */

    CAknMarkingMode(

            CAknItemActionMenu& aItemActionMenu,

            CollectionArray& aArray );

    /**

     * Returns marking collection received from aCollection.

     * 

     * @param aCollection Collection.

     * @return Marking collection object.

     */

    static MAknMarkingCollection* MarkingCollection(

            MAknCollection& aCollection );

    /**

     * Returns marking collection.

     * 

     * @return Marking collection object.

     */

    MAknMarkingCollection* MarkingCollection();

    /**

     * Returns the activated marking collection i.e the one with marking mode

     * turned on.

     * 

     * @return Active marking collection.

     */

    MAknMarkingCollection* ActiveMarkingCollection();

    /**

     * Updates navi pane when entering and exiting marking mode

     * 

     * @param  aEnable @c ETrue to set marking mode related text

     *                 @c EFalse to remove marking mode related text

     */

    void UpdateMarkingModeNaviPaneL( TBool aEnable );

private: // data

    /**

     * Collection array owned by CAknItemActionMenu.

     * Not own.

     */

    CollectionArray& iCollections;

    /**

     * Item action menu that owns this marking mode handler.

     * Not own.

     */

    CAknItemActionMenu& iItemActionMenu;

    /**

     * Marking mode navi pane decorator

     */

    CAknNavigationDecorator* iMarkingDecorator;     

    };

#endif // C_AKNMARKINGMODE_H