qt-everywhere-src-5.14.1/qtbase/src/corelib/statemachine/qsignaltransition.h

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#ifndef QSIGNALTRANSITION_H
#define QSIGNALTRANSITION_H

#include <QtCore/qabstracttransition.h>
#include <QtCore/qmetaobject.h>

QT_REQUIRE_CONFIG(statemachine);

QT_BEGIN_NAMESPACE

class QSignalTransitionPrivate;
class Q_CORE_EXPORT QSignalTransition : public QAbstractTransition
{
    Q_OBJECT
    Q_PROPERTY(QObject* senderObject READ senderObject WRITE setSenderObject NOTIFY senderObjectChanged)
    Q_PROPERTY(QByteArray signal READ signal WRITE setSignal NOTIFY signalChanged)

public:
    QSignalTransition(QState *sourceState = nullptr);
    QSignalTransition(const QObject *sender, const char *signal,
                      QState *sourceState = nullptr);
#ifdef Q_QDOC
    template<typename PointerToMemberFunction>
    QSignalTransition(const QObject *object, PointerToMemberFunction signal,
                      QState *sourceState = nullptr);
#elif defined(Q_COMPILER_DELEGATING_CONSTRUCTORS)
    template <typename Func>
    QSignalTransition(const typename QtPrivate::FunctionPointer<Func>::Object *obj,
                      Func sig, QState *srcState = nullptr)
    : QSignalTransition(obj, QMetaMethod::fromSignal(sig).methodSignature().constData(), srcState)
    {
    }
#endif

    ~QSignalTransition();

    QObject *senderObject() const;
    void setSenderObject(const QObject *sender);

    QByteArray signal() const;
    void setSignal(const QByteArray &signal);

protected:
    bool eventTest(QEvent *event) override;
    void onTransition(QEvent *event) override;

    bool event(QEvent *e) override;

Q_SIGNALS:
    void senderObjectChanged(QPrivateSignal);
    void signalChanged(QPrivateSignal);

private:
    Q_DISABLE_COPY(QSignalTransition)
    Q_DECLARE_PRIVATE(QSignalTransition)
};

QT_END_NAMESPACE

#endif