Events/SfmlEventSystem.hpp

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//
// Thor C++ Library
// Copyright (c) 2011 Jan Haller
// 
// 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 THOR_SFMLEVENTSYSTEM_HPP
#define THOR_SFMLEVENTSYSTEM_HPP

#include <Thor/Events/EventSystem.hpp>
#include <Thor/Config.hpp>

#include <SFML/Window/Event.hpp>


namespace sf
{

    class Window;

} // namespace sf


namespace thor
{
namespace detail
{
    // Function that extracts the event type of an sf::Event
    // The namespace thor::detail is imported at the call, so this function participates in overload resolution.
    inline sf::Event::EventType ExtractEventIdentifier(const sf::Event& event)
    {
        return event.Type;
    }
}

// ---------------------------------------------------------------------------------------------------------------------------


    
class THOR_API SfmlEventSystem : public EventSystem<sf::Event, sf::Event::EventType>
{   
    // ---------------------------------------------------------------------------------------------------------------------------
    // Public member functions
    public:
        explicit                    SfmlEventSystem(sf::Window& window);
        
        void                        PollEvents();

        Connection                  ForwardEvents(const Listener& receiver);                
        
        void                        ClearEventForwarders();
    

    // ---------------------------------------------------------------------------------------------------------------------------
    // Private types
    private:
        // Container type
        typedef detail::ListenerSequence<const sf::Event&>      EventForwarderCtr;

        
    // ---------------------------------------------------------------------------------------------------------------------------
    // Private variables
    private:
        sf::Window&                 mWindow;
        EventForwarderCtr           mForwarders;
};


} // namespace thor

#endif // THOR_SFMLEVENTSYSTEM_HPP