/****************************************************************************
**
** Copyright (C) 1992-2005 Trolltech AS. All rights reserved.
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef DEFAULT_EXTENSIONFACTORY_H
#define DEFAULT_EXTENSIONFACTORY_H

#include <QtDesigner/extension_global.h>
#include <QtDesigner/extension.h>

#include <QtCore/QMap>
#include <QtCore/QHash>
#include <QtCore/QPair>

class QExtensionManager;

class QT_EXTENSION_EXPORT QExtensionFactory : public QObject, public QAbstractExtensionFactory
{
    Q_OBJECT
    Q_INTERFACES(QAbstractExtensionFactory)
public:
    QExtensionFactory(QExtensionManager *parent = 0);

    virtual QObject *extension(QObject *object, const QString &iid) const;
    QExtensionManager *extensionManager() const;

private slots:
    void objectDestroyed(QObject *object);

protected:
    virtual QObject *createExtension(QObject *object, const QString &iid, QObject *parent) const;

private:
    mutable QMap< QPair<QString,QObject*>, QObject*> m_extensions;
    mutable QHash<QObject*, bool> m_extended;
};

#endif // DEFAULT_EXTENSIONFACTORY_H
