/*

* Copyright (c) 2002 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 "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: 

*      Internal class for storing a window.

*  

*

*/

#ifndef __MULTIPLE_WINDOWS_WINDOWQUEUE_H__

#define __MULTIPLE_WINDOWS_WINDOWQUEUE_H__

// INCLUDES FILES

#include "WmlBrowserBuild.h"

#include <e32base.h>

// FORWARD DECLARATIONS

class CBrowserWindow;

// CLASS DECLARATION

// multiple linked queue for windows

// iPrev and iNext for stepping through all the queue

// iParent points to the window's parent

class CBrowserWindowQue: public CBase

    {

    public:  // default constructor to have a valid window

        CBrowserWindowQue( CBrowserWindow* aWindow ) : 

             iWindow(aWindow), iParent(NULL),

             iPrev(NULL), iNext(NULL), iStatus( 0 ) {}

        ~CBrowserWindowQue();

    public:

        // returns the last item in the queue

        inline CBrowserWindowQue* LastItem() const ;

        // appends an iten at the end of the queue

        void AppendL( CBrowserWindowQue* aItem );

        // points to the 'next' window which is not deleted

        CBrowserWindowQue* Next() const;

        // points to the 'prev' window which is not deleted

        CBrowserWindowQue* Prev() const;

    public:

        enum TWindowStatus {  // bit mask

            EWindowNone = 0,

            EWindowDeleted = 1

        };

    public:  // data members

        CBrowserWindow* iWindow;

        CBrowserWindowQue* iParent;

        CBrowserWindowQue* iPrev;

        CBrowserWindowQue* iNext;

        TInt iStatus;  // bitmask

    };

#endif  // __MULTIPLE_WINDOWS_WINDOWQUEUE_H__

// End of File