event_filtering.h

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

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

namespace listener { 

  /*__LICENCE_HERE__*/

  class IGSLISTENER EventFiltering: public EventFilter {
  public:
    virtual ~EventFiltering() ;
    virtual bool filter(Event* e) ;

    template <class EVENT>
    void register_for_event() {
      event_types_.push_back(typeid(EVENT).name()) ;
    }

    template <class EVENT>
    void unregister_for_event() {
      std::vector<std::string>::iterator it = 
        std::find(event_types_.begin(), event_types_.end(), typeid(EVENT).name()) ;
      if (it != event_types_.end())
        event_types_.erase(it) ;
    }

  private:
    // typeid copy ctor is private, uses name instead
    std::vector<std::string> event_types_ ;

  } ;

  // ===================================

  template <typename EVENT>
  class FilterForEvent: public EventFiltering {
  public:
    FilterForEvent() ;
    virtual ~FilterForEvent() ;
    virtual bool filter(EVENT* e) = 0 ;
    virtual bool filter(Event* e) ;
  } ;

}

#include "inline_src/event_filtering.hxx"
#endif

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