Swiften/EventLoop/EventLoop.h

/*
 * Copyright (c) 2010 Remko Tronçon
 * Licensed under the GNU General Public License v3.
 * See Documentation/Licenses/GPLv3.txt for more information.
 */

#pragma once

#include <boost/function.hpp>
#include <boost/thread/mutex.hpp>
#include <list>
#include <deque>

#include <Swiften/Base/API.h>
#include <Swiften/EventLoop/Event.h>

namespace Swift {
  class EventOwner;

  class SWIFTEN_API EventLoop {
    public:
      EventLoop();
      virtual ~EventLoop();
      
      void postEvent(boost::function<void ()> event, boost::shared_ptr<EventOwner> owner = boost::shared_ptr<EventOwner>());
      void removeEventsFromOwner(boost::shared_ptr<EventOwner> owner);

    protected:
      virtual void post(const Event& event) = 0;
    
      void handleEvent(const Event& event);

    private:
      struct HasOwner {
        HasOwner(boost::shared_ptr<EventOwner> owner) : owner(owner) {}
        bool operator()(const Event& event) const { return event.owner == owner; }
        boost::shared_ptr<EventOwner> owner;
      };
      boost::mutex eventsMutex_;
      unsigned int nextEventID_;
      std::list<Event> events_;
      bool handlingEvents_;
      std::deque<Event> eventsToHandle_;
  };
}