Added event dispatching

CMakeLists.txt

@@ -159,6 +159,7 @@ SET(LIBRARY_HEADERS
 	SDL2pp/Texture.hh
 	SDL2pp/Wav.hh
 	SDL2pp/Window.hh
+	SDL2pp/Private/EventDispatching.hh
 	SDL2pp/Private/EventHandler.hh
 	SDL2pp/Private/EventHandlerFunctor.hh
 	SDL2pp/Private/EventHandlerObject.hh

SDL2pp/EventPolling.hh

@@ -22,18 +22,19 @@
 #ifndef SDL2PP_EVENTPOLLING_HH
 #define SDL2PP_EVENTPOLLING_HH
 
-#include <SDL2pp/Private/EventHandler.hh>
+#include <SDL2pp/Private/EventDispatching.hh>
 
 namespace SDL2pp {
 namespace Event {
 	template <typename... EventHandlers>
-	bool PollEvent(EventHandlers&&...) {
+	bool PollEvent(EventHandlers&&... eventHandlers) {
 		SDL_Event event;
 		if (!SDL_PollEvent(&event)) {
 			return false;
 		}
 		
 		// TODO: Private::DispatchEvent(event, eventHandlers...);
+		Private::DispatchEvent(event, eventHandlers...);
 		
 		return true;
 	}

SDL2pp/Private/EventDispatching.hh

@@ -0,0 +1,70 @@
+/*
+  libSDL2pp - C++11 bindings/wrapper for SDL2
+  Copyright (C) 2017 Vraiment <jemc44@gmail.com>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef SDL2PP_PRIVATE_EVENTDISPATCHING_HH
+#define SDL2PP_PRIVATE_EVENTDISPATCHING_HH
+
+#include <SDL2pp/Private/EventHandler.hh>
+
+#include <type_traits>
+
+#include <SDL_events.h>
+
+namespace SDL2pp {
+namespace Private
+{
+	template <typename EventHandler>
+	auto DispatchEvent(const SDL_Event &event, EventHandler&& eventHandler) -> std::enable_if<IsEventHandlerFunctor<EventHandler, SDL_Event>::value>
+	{
+		eventHandler(event);
+	}
+	
+	template <typename EventHandler>
+	auto DispatchEvent(const SDL_Event &event, EventHandler&& eventHandler) -> std::enable_if<IsEventHandlerObject<EventHandler, SDL_Event>::value>
+	{
+		eventHandler.HandleEvent(event);
+	}
+	
+	template <typename EventHandler>
+	auto DispatchEvent(const SDL_Event&, EventHandler&&) -> std::enable_if<!IsEventHandler<EventHandler, SDL_Event>::value>
+	{
+		static_assert(!IsEventHandler<EventHandler, SDL_Event>::value, "One of the given values is not a valid event handler");
+	}
+
+	template <typename... EventHandlers>
+	void DispatchEvent(const SDL_Event & event, EventHandlers&&... eventHandlers) {
+		DispatchEvent(event, eventHandlers...);
+	}
+	
+	template <typename EventHandler, typename... EventHandlers>
+	void DispatchEvent(const SDL_Event &event, EventHandler&& eventHandler, EventHandlers&&... eventHandlers) {
+		DispatchEvent(event, eventHandler);
+		DispatchEvent(event, eventHandlers...);
+	}
+	
+	template <>
+	void DispatchEvent(const SDL_Event &) {
+		// no-op
+	}
+}
+}
+
+#endif