/*! 
    \file event_handler.h
    \brief Definition of the EventHandler
    
*/

#ifndef _EVENT_HANDLER_H
#define _EVENT_HANDLER_H

#include "base_object.h"
#include "event_def.h"

class EventListener;



#define N_STD_KEYS SDLK_LAST
#define N_BUTTONS 6
#define DEFAULT_KEYBIND_FILE "~/.orxonox/orxonox.conf"

typedef enum elState
  {
    ES_GAME,
    ES_GAME_MENU,
    ES_MENU,

    ES_ALL,

    ES_NUMBER,
  };

//! Key aliasing structure
/**
   This structure contains the key aliasing information, e.g. the command strings that
   have been bound to the keys.
*/
typedef struct
{
  char keys[N_STD_KEYS][CMD_LENGHT];
  char buttons[N_BUTTONS][CMD_LENGHT];
} KeyBindings;


//! The one Event Handler from Orxonox
class EventHandler : public BaseObject {

 public:
  static EventHandler* getInstance(void);
  virtual ~EventHandler(void);

  void setState(elState state);

  void subscribeListener(EventListener* el, elState state, int eventType);
  void unsubscribeListener(int eventType, elState state);
  void flush();
  
  void loadKeyBindings(const char* fileName);

  void tick(float t);
  void process();

 private:
  EventHandler(void);

  static EventHandler* singletonRef;

  KeyBindings* keyAliases;
  EventListener*** listeners;                         //!< a list of registered listeners
  elState state;

};

#endif /* _EVENT_HANDLER_H */