libfilezilla
event_handler.hpp
Go to the documentation of this file.
1 #ifndef LIBFILEZILLA_EVENT_HANDLER
2 #define LIBFILEZILLA_EVENT_HANDLER
3 
4 #include "event_loop.hpp"
5 
9 namespace fz {
10 
54 class FZ_PUBLIC_SYMBOL event_handler
55 {
56 public:
57  event_handler() = delete;
58 
59  explicit event_handler(event_loop& loop);
60  virtual ~event_handler();
61 
62  event_handler(event_handler const&) = delete;
63  event_handler& operator=(event_handler const&) = delete;
64 
71  void remove_handler();
72 
79  virtual void operator()(event_base const&) = 0;
80 
87  template<typename T, typename... Args>
88  void send_event(Args&&... args) {
89  event_loop_.send_event(this, new T(std::forward<Args>(args)...));
90  }
91 
92  template<typename T>
93  void send_event(T* evt) {
94  event_loop_.send_event(this, evt);
95  }
96 
113  timer_id add_timer(duration const& interval, bool one_shot);
114 
119  void stop_timer(timer_id id);
120 
121  event_loop & event_loop_;
122 private:
123  friend class event_loop;
124  bool removing_{};
125 };
126 
141 template<typename T, typename F>
142 bool dispatch(event_base const& ev, F&& f)
143 {
144  bool const same = same_type<T>(ev);
145  if (same) {
146  T const* e = static_cast<T const*>(&ev);
147  std::apply(std::forward<F>(f), e->v_);
148  }
149  return same;
150 }
151 
167 template<typename T, typename H, typename F>
168 bool dispatch(event_base const& ev, H* h, F&& f)
169 {
170  bool const same = same_type<T>(ev);
171  if (same) {
172  T const* e = static_cast<T const*>(&ev);
173  apply(h, std::forward<F>(f), e->v_);
174  }
175  return same;
176 }
177 
196 template<typename T, typename ... Ts, typename H, typename F, typename ... Fs>
197 bool dispatch(event_base const& ev, H* h, F&& f, Fs&& ... fs)
198 {
199  if (dispatch<T>(ev, h, std::forward<F>(f))) {
200  return true;
201  }
202 
203  return dispatch<Ts...>(ev, h, std::forward<Fs>(fs)...);
204 }
205 
206 }
207 
208 #endif
auto apply(Obj &&obj, F &&f, Tuple &&args) -> decltype(apply_(std::forward< Obj >(obj), std::forward< F >(f), std::forward< Tuple >(args), Seq()))
Apply tuple to pointer to member.
Definition: apply.hpp:48
Simple handler for asynchronous event processing.
Definition: event_handler.hpp:54
bool dispatch(event_base const &ev, F &&f)
Dispatch for simple_event<> based events to simple functors.
Definition: event_handler.hpp:142
A simple threaded event loop for the typesafe event system.
A threaded event loop that supports sending events and timers.
Definition: event_loop.hpp:33
The namespace used by libfilezilla.
Definition: apply.hpp:17
The duration class represents a time interval in milliseconds.
Definition: time.hpp:271
void send_event(Args &&... args)
Sends the passed event asynchronously to the handler.
Definition: event_handler.hpp:88
Common base class for all events.
Definition: event.hpp:22