/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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** This file is part of the Qt Designer of the Qt Toolkit.
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** License version 2.0 as published by the Free Software Foundation
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** this file.  Please review the following information to ensure GNU
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** http://trolltech.com/products/qt/licenses/licensing/opensource/
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** or contact the sales department at sales@trolltech.com.
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** GPL_EXCEPTION.txt in this package.
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** Trolltech ASA (c) 2007
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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****************************************************************************/

#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>

QT_BEGIN_HEADER

class QExtensionManager;

class QDESIGNER_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 Q_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;
};

QT_END_HEADER

#endif // DEFAULT_EXTENSIONFACTORY_H
