gistfile1.txt

global.events = {};

//
// Usage:
//   bind('editButton->clicked', function(arg) {
//     doStuff(arg);
//   });
//
global.bind = function(eventName, callback) {
  var callbacks = global.events[eventName] || (global.events[eventName] = []);
  callbacks.push(callback);
}

//
// Usage:
//   trigger('editButton->clicked', true);
//
global.trigger = function(eventName) {
  if (debug) {
    console.log("Triggered event: '" + eventName + "'");
  }
  var that = this;      // scoping
  var args = arguments; // scoping
  var callbacks = global.events[eventName];
  
  if (Array.isArray(callbacks)) {
    callbacks.forEach( function(callback) {
      callback.apply(global, Array.prototype.slice.call(args, 1));
    });
  }
}

global.unbind = function(eventName, callback) {
  var callbacks = global.events[eventName];

  if (Array.isArray(callbacks)) {
    callbacks.forEach( function(item, index) {
      if (callback.toString() === item.toString()) {
        callbacks.splice(index, 1);
        return;
      }
    });
  }
}