/*

* Copyright (c) 2008 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:  Data class to hold application configuration info

*

*/

#ifndef _XNROOTDATA_H

#define _XNROOTDATA_H

// System includes

#include <e32base.h>

#include <babitflags.h>

// User includes

#include "xnplugindata.h"

// Forward declarations

class CXnViewManager;

class CXnViewData;

class CXnEcomHandler;

class CXnODTParser;

class CXnODT;

/**

 * Holds root data in UiEngine

 * 

 * @ingroup group_xnlayoutengine

 * @lib xn3layoutengine.lib

 * @since S60 5.0

 */

NONSHARABLE_CLASS( CXnRootData ) : public CXnPluginData

    {

public:    

    // Constructors and destructor

    /**

     * Two-phased constructor.

     */

    static CXnRootData* NewL( CXnViewManager& aManager, TUid aApplicationUid );

    /**

     * Two-phased constructor. Leaving on stack

     */

    static CXnRootData* NewLC( CXnViewManager& aManager, TUid aApplicationUid );

    /**

     * Destructor

     */

    ~CXnRootData();

protected:    

    /**

     * C++ constructor

     */

    CXnRootData( CXnViewManager& aManager, TUid aApplicationUid );

private:

    // private constructors

    /**

     * Leaving constructor

     */

    void ConstructL();

public:

    // From CXnPluginData

    /**

     * @see CXnPluginData

     */

    TInt Load();

    /**

     * @see CXnPluginData

     */

    void Destroy();

public:

    // New functions

    /**

     * Loads remaining application views

     */    

    void LoadRemainingViews();

    /**

     * Cancels load remaining application views

     */        

    void CancelLoadRemainingViews();

    /**

     * Gets application active view data

     * 

     * @return Active view data

     */        

    CXnViewData& ActiveViewData() const;

    /**

     * Gets previous view data from currently active one

     * 

     * @return Previous view data

     */            

    CXnViewData& PreviousViewData() const;

    /**

     * Gets next view data from currently active one

     * 

     * @return Next view data

     */                

    CXnViewData& NextViewData() const;

    /**

     * Sets view data to destroyal list

     *

     * @param aViewData View data to destroy      

     */                    

    void DestroyViewData( CXnViewData* aViewData );

    /**

     * Gets ODT 

     * 

     * @return ODT

     */                

    CXnODT* ODT() const;

    /**

     * Gets root node from ODT

     * 

     * @return Root node

     */                

    CXnNode* RootNode() const;

    /**

     * Gets ODT Parser

     * 

     * @return ODT Parser

     */                

    CXnODTParser& Parser() const;

    /**

     * Gets Ecom handler

     * 

     * @return Ecom handler

     */                

    CXnEcomHandler& EcomHandler() const;

    /**

     * Sets maximum pages allowed

     * 

     * @param aPages maximum pages 

     */

    void SetMaxPages( TInt32 aPages );

    /**

     * Get maximum pages allowed

     * 

     * @return number of pages allowed

     */

    TInt32 MaxPages();

private:

    // New functions

    TBool AllViewsLoaded() const;

    TBool AllViewsDestroyed() const;

    static TInt RunLoadL( TAny* aAny );

    static TInt RunDestroyL( TAny *aAny );

private:

    // data

    /** Timer for loading views, Owned */    

    CPeriodic* iLoadTimer;

    /** Timer for deleting views, Owned */

    CPeriodic* iDestroyTimer;

    /** Application Uid */

    TUid iApplicationUid;

    /** ECom handler, Owned */

    CXnEcomHandler* iEcomHandler;    

    /** ODT Parser, Owned */

    CXnODTParser* iParser;

    /** ODT which describes application configuration, Owned */ 

    CXnODT* iODT;

    /** Array of views waiting destruction */

    RPointerArray< CXnViewData > iViewsToDestroy;    

    /** Flag to determine remaining view load direction */

    TBool iLoadForward;

    /** Maximum of views allowed */

    TInt32 iMaxPages;

    };

#endif // _XNROOTDATA_H