64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
#ifndef WEAKCONNECT_H
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#define WEAKCONNECT_H
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#include <type_traits>
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// Qt includes
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#include <QObject>
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template <typename Func1, typename Func2, typename std::enable_if_t<std::is_member_pointer<Func2>::value, int> = 0>
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static inline QMetaObject::Connection weakConnect(typename QtPrivate::FunctionPointer<Func1>::Object* sender,
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Func1 signal,
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typename QtPrivate::FunctionPointer<Func2>::Object* receiver,
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Func2 slot)
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{
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QMetaObject::Connection conn_normal = QObject::connect(sender, signal, receiver, slot);
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QMetaObject::Connection* conn_delete = new QMetaObject::Connection();
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*conn_delete = QObject::connect(sender, signal, [conn_normal, conn_delete]() {
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QObject::disconnect(conn_normal);
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QObject::disconnect(*conn_delete);
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delete conn_delete;
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});
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return conn_normal;
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}
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template <typename Func1, typename Func2, typename std::enable_if_t<!std::is_member_pointer<Func2>::value, int> = 0>
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static inline QMetaObject::Connection weakConnect(typename QtPrivate::FunctionPointer<Func1>::Object* sender,
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Func1 signal,
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Func2 slot)
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{
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QMetaObject::Connection conn_normal = QObject::connect(sender, signal, slot);
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QMetaObject::Connection* conn_delete = new QMetaObject::Connection();
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*conn_delete = QObject::connect(sender, signal, [conn_normal, conn_delete]() {
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QObject::disconnect(conn_normal);
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QObject::disconnect(*conn_delete);
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delete conn_delete;
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});
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return conn_normal;
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}
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template <typename Func1, typename Func2, typename std::enable_if_t<!std::is_member_pointer<Func2>::value, int> = 0>
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static inline QMetaObject::Connection weakConnect(typename QtPrivate::FunctionPointer<Func1>::Object* sender,
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Func1 signal,
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typename QtPrivate::FunctionPointer<Func2>::Object* receiver,
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Func2 slot)
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{
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Q_UNUSED(receiver);
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QMetaObject::Connection conn_normal = QObject::connect(sender, signal, slot);
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QMetaObject::Connection* conn_delete = new QMetaObject::Connection();
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*conn_delete = QObject::connect(sender, signal, [conn_normal, conn_delete]() {
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QObject::disconnect(conn_normal);
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QObject::disconnect(*conn_delete);
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delete conn_delete;
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});
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return conn_normal;
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}
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#endif // WEAKCONNECT_H
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