server/irc/eventbinder.js

   1 var _ = require('lodash');
   2
   3
   4 module.exports.bindIrcEvents = function (events_scope, event_map, context, irc_connection) {
   5     var namespace_prefix = events_scope ?
   6         events_scope + ' ' :
   7         '';
   8
   9     // Make sure we have a holder for the bound events
  10     if (!event_map._bound_events)
  11         event_map._bound_events = {};
  12
  13     _.each(event_map, function (fn, event_name) {
  14         if (event_name[0] === '_') return;
  15
  16         // Bind the event to `context`, storing it with the event listing
  17         if (!event_map._bound_events[event_name]) {
  18             event_map._bound_events[event_name] = _.bind(fn, context);
  19         }
  20
  21         // Add the listener to the IRC connection object
  22         irc_connection.on(namespace_prefix + event_name, event_map._bound_events[event_name]);
  23     });
  24 };
  25
  26
  27 module.exports.unbindIrcEvents = function (events_scope, event_map, irc_connection) {
  28     var namespace_prefix = events_scope ?
  29         events_scope + ' ' :
  30         '';
  31
  32     // No bound events? Then we have nothing to do
  33     if (!event_map._bound_events) return;
  34
  35     _.each(event_map, function(fn, event_name) {
  36         if (event_name[0] === '_') return;
  37
  38         if (event_map._bound_events[event_name]) {
  39             // Remove the listener from the IRC connection object
  40             irc_connection.removeListener(namespace_prefix + event_name, event_map._bound_events[event_name]);
  41
  42             // Remove the bound function as no longer needed
  43             delete event_map._bound_events[event_name];
  44         }
  45     });
  46
  47     delete event_map._bound_events;
  48 };