/*

* Copyright (c) 2010 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:  Abstract base class for queries.

*

*/

#ifndef CLPDQUERYLAUNCHERBASE_H

#define CLPDQUERYLAUNCHERBASE_H

//  INCLUDES

#include "lpddlgobserver.h"

#include <e32base.h>

#include <badesca.h>

#include <coemain.h>

#include <epos_cposprivacynotifier.h>

// SYSTEM INCLUDE

// FORWARD DECLARATIONS

class CLpdGlobalPluginDialog;

class CLpdMessagePluginDialog;

class MLpdResultHandler;

class CLpdRequestorProcessor;

// CLASS DECLARATION

/**

*  Base class which handles the dialog and expiration timer.

*  Expiration timer can be used to ensure that if the user doesn't handle

*  a dialog in certain time the dialog is closed. NOTE: In current

*  implementation the timer is not started, i.e. dialogs never expire.

*  Implementations of this class should notify a result handler

*  when dialog result is available. This base class takes care of

*  notifying possible timeout with KErrTimedOut.

*

*  @lib locverifierdlg.lib

*  @since 2.1

*/

class CLpdQueryLauncherBase : public CBase, public MLpdDlgObserver

    {

protected:

        enum TRequestType

               {

               EVerification = 0,

               ENotification,

               EUnknown

               };

    public:  // Constructors and destructor

        /**

        * Destructor. Exits possibly running dialog without callback.

        */

        virtual ~CLpdQueryLauncherBase();

    public: // New functions, query setup and launching

       /**

        * Method for setting text array.

        * 

        */

        void SetRequestInfoL( CLpdRequestorProcessor* aRequestInfo );

        /**

        * Method for launching query, note that it must have been

        * correctly prepared first.

        */

        void StartQueryL();

        virtual void RequestType(TRequestType& aRequestType);

    public: // Functions from base classes

        /**

        * From MLpdDlgObserver, called when dialog is dismissed.

        * This method calls also pure virtual method

        * ExtendedHandleDlgDismissedL().

        * @param aResult code of the query

        */

        void HandleDlgDismissedL( TInt aResult);

    public: 

         void Cancel();

    protected: // Constructors and destructors

        /**

        * C++ constructor.

        * @param aHandler of the query result

        */

        CLpdQueryLauncherBase( MLpdResultHandler& aHandler );

        void ConstructL();

    protected: // New functions

        /**

        * This pure virtual method must be implemented

        * by the derived class to handle the result code

        * appropriately and to notify the observer of this

        * class.

        */

        virtual void ExtendedHandleDlgDismissedL() = 0;

    protected: // Data

        // Reference to the result handler

        MLpdResultHandler& iHandler;

        // Result code from the dialog

        TInt iResult;

        // Pointer to the list query dialog

        CLpdGlobalPluginDialog* iQueryDlg; // owns untils RunLD() called

    };

#endif      // CLPDQUERYLAUNCHERBASE_H   

// End of File