GuardedTransition.h

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#pragma once
 
#include "QGCSignalTransition.h"
 
#include <functional>
 
class GuardedTransition : public QGCSignalTransition
{
    Q_OBJECT
    Q_DISABLE_COPY(GuardedTransition)
 
public:
    using Guard = std::function<bool()>;
 
    template<typename Func>
    GuardedTransition(const typename QtPrivate::FunctionPointer<Func>::Object* sender,
                      Func signalFn,
                      QAbstractState* target,
                      Guard guard)
        : QGCSignalTransition(sender, signalFn)
        , _guard(std::move(guard))
    {
        setTargetState(target);
    }
 
    template<typename Func>
    GuardedTransition(const typename QtPrivate::FunctionPointer<Func>::Object* sender,
                      Func signalFn,
                      Guard guard)
        : QGCSignalTransition(sender, signalFn)
        , _guard(std::move(guard))
    {
    }
 
    void setGuard(Guard guard) { _guard = std::move(guard); }
 
    Guard guard() const { return _guard; }
 
protected:
    bool eventTest(QEvent* event) override;
 
private:
    Guard _guard;
};