publisher.h

//-*- C++ -*-
//
#ifndef __LISTENER__publisher_h__
#define __LISTENER__publisher_h__

#include "common.h"
#include "event_filter.h"
#include <vector>
#include <list>

#define igs_emit(E) post_event(new E)

namespace listener { 
  
  class Event ;
  class Listener ;
  class Subscriber ;

  class IGSLISTENER Publisher {
  public:
    Publisher() ;
    virtual ~Publisher() ;
    
    int post_event(Event* e) ;
    int post_event(Event* e) const ;

    void block_all_events() ;
    void unblock_all_events() ;
    bool are_all_events_blocked() const ;

    void dump_publisher(std::ostream&) ;
    
  private:
    friend class Subscriber ;
    friend class Listener ;
    typedef std::list<Listener*> Listeners ;
    void add_listener_private(Listener* l) ;
    void notify_remove_listener(Listener* l) ;
    Listeners listeners_ ;
    bool blocked_ ;
    
  } ;

  inline bool Publisher::are_all_events_blocked() const {
    return blocked_ ;
  }

}

#endif

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