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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef SIGNALMANAGER_H
#define SIGNALMANAGER_H
#include "pysidemacros.h"
#include <sbkpython.h>
#include <shibokenmacros.h>
#include <QtCore/QMetaMethod>
#include <optional>
QT_FORWARD_DECLARE_CLASS(QDataStream)
namespace PySide
{
/// Thin wrapper for PyObject which increases the reference count at the constructor but *NOT* at destructor.
class PYSIDE_API PyObjectWrapper
{
public:
PyObjectWrapper(PyObjectWrapper&&) = delete;
PyObjectWrapper& operator=(PyObjectWrapper &&) = delete;
PyObjectWrapper();
explicit PyObjectWrapper(PyObject* me);
PyObjectWrapper(const PyObjectWrapper &other);
PyObjectWrapper& operator=(const PyObjectWrapper &other);
void reset(PyObject *o);
~PyObjectWrapper();
operator PyObject*() const;
// FIXME: To be removed in Qt7
// This was done to make QAbstractItemModel::data() work without explicit conversion of
// QVariant(PyObjectWrapper) to QVariant(int). This works because QAbstractItemModel::data()
// inturn calls legacyEnumValueFromModelData(const QVariant &data). But this function will
// be removed in Qt7.
// The proper fix would be to associate PyObjectWrapper to the corresponding C++ Enum.
int toInt() const;
private:
PyObject* m_me;
};
PYSIDE_API QDataStream &operator<<(QDataStream& out, const PyObjectWrapper& myObj);
PYSIDE_API QDataStream &operator>>(QDataStream& in, PyObjectWrapper& myObj);
class PYSIDE_API SignalManager
{
public:
Q_DISABLE_COPY_MOVE(SignalManager)
using QmlMetaCallErrorHandler = std::optional<int>(*)(QObject *object);
static SignalManager& instance();
static void setQmlMetaCallErrorHandler(QmlMetaCallErrorHandler handler);
QObject* globalReceiver(QObject *sender, PyObject *callback, QObject *receiver = nullptr);
void releaseGlobalReceiver(const QObject* sender, QObject* receiver);
int globalReceiverSlotIndex(QObject* sender, const char* slotSignature) const;
void notifyGlobalReceiver(QObject* receiver);
bool emitSignal(QObject* source, const char* signal, PyObject* args);
static int qt_metacall(QObject* object, QMetaObject::Call call, int id, void** args);
// Used to register a new signal/slot on QMetaobject of source.
static bool registerMetaMethod(QObject* source, const char* signature, QMetaMethod::MethodType type);
static int registerMetaMethodGetIndex(QObject* source, const char* signature, QMetaMethod::MethodType type);
// used to discovery metaobject
static const QMetaObject* retrieveMetaObject(PyObject* self);
// Disconnect all signals managed by Globalreceiver
void clear();
void purgeEmptyGlobalReceivers();
// Utility function to call a python method usign args received in qt_metacall
static int callPythonMetaMethod(const QMetaMethod& method, void** args, PyObject* obj);
static void deleteGlobalReceiver(const QObject *globalReceiver);
private:
struct SignalManagerPrivate;
SignalManagerPrivate* m_d;
SignalManager();
~SignalManager();
};
}
Q_DECLARE_METATYPE(PySide::PyObjectWrapper)
#endif
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