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83 lines
1.6 KiB
C++
83 lines
1.6 KiB
C++
#ifndef NGCORE_SIGNALS_HPP
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#define NGCORE_SIGNALS_HPP
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#include <list>
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#include <map>
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#include <functional>
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namespace ngcore
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{
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template<typename ... ParameterTypes>
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class Signal
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{
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private:
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std::list<std::function<bool(ParameterTypes...)>> funcs;
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bool is_emitting;
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public:
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Signal() : is_emitting(true) {}
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template<typename Cls, typename FUNC>
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void Connect(Cls* self, FUNC f)
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{
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auto ptr = self->weak_from_this();
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auto func = [ptr, f](ParameterTypes... args)
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{
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if (ptr.expired())
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return false;
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f(args...);
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return true;
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};
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funcs.push_back(func);
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}
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inline void Emit(ParameterTypes ...args)
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{
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if(is_emitting)
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funcs.remove_if([&](auto& f){ return !f(args...); });
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}
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inline bool SetEmitting(bool emitting)
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{
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bool was_emitting = is_emitting;
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is_emitting = emitting;
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return was_emitting;
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}
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inline bool GetEmitting() const { return is_emitting; }
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};
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class SimpleSignal
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{
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private:
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// std::map<void*,std::function<void()>> funcs;
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std::list<std::pair<void*,std::function<void()>>> funcs;
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public:
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SimpleSignal() = default;
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template<typename FUNC>
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void Connect(void* var, FUNC f)
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{
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// funcs[var] = f;
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funcs.push_back ( { var, f } );
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}
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void Remove(void* var)
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{
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// funcs.erase(var);
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funcs.remove_if([&] (auto var_f) { return var_f.first==var; });
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}
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inline void Emit()
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{
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for (auto [key,f] : funcs)
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f();
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}
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};
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} // namespace ngcore
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#endif // NGCORE_SIGNALS_HPP
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