/*
* Copyright (c) 2005 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: 
*
*
*/


#ifndef MENUTASKLIST_H
#define MENUTASKLIST_H

// INCLUDES

#include <w32std.h>
#include <apgtask.h>

// CLASS DECLARATION

/**
*  Class for finding out about running applications.
*
*  This is a modification of the original CAknTaskList class, which
*  differs in that it does not discriminate applications based on their
*  window group priority.
*  @since Series 60 3.0
*/
class CMenuTaskList : public CBase
    {
public:
    /**
    * Factory function
    * @param aWsSession an open session to the window server, often from CEikonEnv::WsSession()
    * @return a new fully constructed instance of CMenuTaskList
    */
    static CMenuTaskList* NewL(RWsSession& aWsSession);
    /**
    * Factory function
    * @param aWsSession an open session to the window server, often from CEikonEnv::WsSession()
    * @return a new fully constructed instance of CMenuTaskList, which is on the cleanup stack
    */
    static CMenuTaskList* NewLC(RWsSession& aWsSession);
    /**
    * Destructor.
    */
    ~CMenuTaskList();
    
    /**
    * Refresh the window group array
    */
    void UpdateListL();
    /**
    * Accessor for the window group array
    * @return an array containing the window groups of running applications.
    */
    const RArray<RWsSession::TWindowGroupChainInfo>& WgArray() const;

    /**
    * Find an application with the requested UID 3, which is running as a root application
    * @param aAppUid the UID 3 of the target application.
    * @return a TApaTask which refers to the running instance of the application.
    * if the application is not running, the TApaTask's Exists() function will return EFalse.
    */  
    TApaTask FindRootApp(TUid aAppUid) const;
    /**
    * Query whether an application's window group is running as a root application.
    * @param aWgId the window group identifier of the target application.
    * @return ETrue if this window group is running as a root window group.
    */
    TBool IsRootWindowGroup(TInt aWgId) const; 
    
private:
    CMenuTaskList(RWsSession& aWsSession);
    void ConstructL();

private:
    RWsSession& iWs;
    RArray<RWsSession::TWindowGroupChainInfo> iWgs;
    };

#endif