/*

* Copyright (c) 2007 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:  Loads widget factory plugin

*

*/

#ifndef I_ALFWIDGETFACTORYLOADER_H

#define I_ALFWIDGETFACTORYLOADER_H

#include <osn/osndefines.h>

#include <memory>

using namespace std;

class CAlfEnv;

namespace Alf

    {

class IAlfWidgetFactory;

class AlfWidgetFactoryLoaderImpl;

/**

 *  @class AlfWidgetFactoryLoader alfwidgetfactoryloader.h "alf/alfwidgetfactoryloader.h"

 *

 *  Factory plugin loader loads factory plugins. Loader will resolve factory 

 *  plugin based on given string and load factory which can create requested 

 *  product. Loader owns factory plugins. Factory products and their 

 *  derivatives must be destroyed before destroying a loader object.

 *

 *  @lib alfwidgetutils.lib

 *  @since S60 ?S60_version

 *  @status Draft

 */

class AlfWidgetFactoryLoader

    {

public:  // Constructors and destructor

    /**

     * Constructor.

     *

     * @exception std::bad_alloc Thrown if out of memory during the construction.

     */

    OSN_IMPORT AlfWidgetFactoryLoader();

    /**

     * Destructor.

     */

    OSN_IMPORT virtual ~AlfWidgetFactoryLoader();

public:

    /**

     * Loads a widget factory.

     * 

     * @param aEnv Alfred Environment

     * @return Pointer to IAlfWidgetFactory or 0. 

     *         Ownership is not transferred to caller.

     */

    OSN_IMPORT IAlfWidgetFactory* loadWidgetFactory(CAlfEnv& aEnv);

private:

    /**

     * Copy Constructor

     */

    AlfWidgetFactoryLoader( const AlfWidgetFactoryLoader& );

    /**

     * Assignment Operator

     */

    AlfWidgetFactoryLoader& operator=( const AlfWidgetFactoryLoader& );

private:    // Data

    auto_ptr<AlfWidgetFactoryLoaderImpl> mImpl;

    };

    }

#endif

// End of File