71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
#ifndef Delegate_h_
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#define Delegate_h_
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#include <string>
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#include <map>
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#include <list>
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#include <functional>
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#include <typeinfo>
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#include <typeindex>
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#include "Node.hpp"
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#include "SDL.h"
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struct Subscriber
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{
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std::function<void(SDL_Event&)> f;
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Node* o;
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};
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struct Delegate : Node
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{
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std::map<int, std::vector<Subscriber>> subscribers;
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static int command_event_type;
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bool cancelling_propagation = false;
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Delegate(Node*);
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void add_subscriber(Subscriber, int);
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void dispatch();
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bool compare(SDL_Event&, const std::vector<std::string>&, bool = false, bool = false);
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bool compare(SDL_Event&, const std::string& = "", bool = false, bool = false);
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bool compare_cancel(SDL_Event&, const std::string& = "");
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bool compare_neutral(SDL_Event&, const std::string& = "");
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void cancel_propagation();
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const std::string& get_event_command(SDL_Event&) const;
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bool get_event_cancel_state(SDL_Event&) const;
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template<typename T>
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void subscribe(void(T::*f)(SDL_Event&), T* o, int type = command_event_type)
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{
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add_subscriber({std::bind(f, o, std::placeholders::_1), static_cast<Node*>(o)}, type);
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}
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template<typename T>
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void unsubscribe(T* p)
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{
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const std::type_info& info = typeid(p);
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for (auto t = subscribers.begin(); t != subscribers.end(); t++)
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{
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for (auto s = t->second.begin(); s != t->second.end();)
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{
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std::cout << p << " " << s->o << " " << s->f.target_type().name() << " " << info.name() << " " <<
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std::type_index(info).name() << " " <<
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(s->f.target_type() == info) << std::endl;
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if (p == s->o)
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{
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s = t->second.erase(s);
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}
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else
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{
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s++;
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}
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}
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}
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}
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};
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#endif
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