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/*
proxyfactorybase.h
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2011 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Volker Krause <volker.krause@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#ifndef GAMMARAY_PROXYFACTORYBASE_H
#define GAMMARAY_PROXYFACTORYBASE_H
#include "plugininfo.h"
#include <QCoreApplication>
#include <QObject>
#include <QString>
#include <iostream>
namespace GammaRay {
/** Base class for wrappers for potentially not yet loaded plugins. */
class ProxyFactoryBase : public QObject
{
Q_OBJECT
public:
explicit ProxyFactoryBase(const PluginInfo &pluginInfo, QObject *parent = nullptr);
~ProxyFactoryBase() override;
PluginInfo pluginInfo() const;
QString errorString() const;
protected:
void loadPlugin();
QObject *m_factory;
QString m_errorString;
private:
PluginInfo m_pluginInfo;
};
template<typename IFace>
class ProxyFactory : public ProxyFactoryBase, public IFace
{
public:
explicit inline ProxyFactory(const PluginInfo &pluginInfo, QObject *parent = nullptr)
: ProxyFactoryBase(pluginInfo, parent)
{
}
inline ~ProxyFactory() override = default;
QString id() const override
{
return pluginInfo().id();
}
protected:
IFace *factory()
{
loadPlugin();
IFace *iface = qobject_cast<IFace *>(m_factory);
if (!iface) {
m_errorString = qApp->translate("GammaRay::ProxyFactory",
"Plugin does not provide an instance of %1.")
.arg(qobject_interface_iid<IFace *>());
std::cerr << "Failed to cast object from " << qPrintable(pluginInfo().path())
<< " to " << qobject_interface_iid<IFace *>() << std::endl;
}
return iface;
}
};
}
#endif // GAMMARAY_PROXYFACTORYBASE_H
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