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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

QT_BEGIN_NAMESPACE

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:
    typedef QPair<QString,QObject*> IdObjectKey;
    typedef QMap< IdObjectKey, QObject*> ExtensionMap;
    mutable ExtensionMap m_extensions;
    typedef QHash<QObject*, bool> ExtendedSet;
    mutable ExtendedSet m_extended;
};

QT_END_NAMESPACE

QT_END_HEADER

#endif // DEFAULT_EXTENSIONFACTORY_H