gistfile1.js

var HookManager = function() {
  this.list = {};
  this.hookTable = {}
}

HookManager.prototype = {
  add: function(n, type, fn, priority, off) {
    if(typeof type != "string")
      log("Cannot add type as hook: " + n)

    this.list[n] = { name: n, type: type, fn: fn, priority: priority == null ? 10 : priority, off: off };
  },
  fire: function(s, param) {
    events = s.split(",")
    for(var i in events )
      this.fireSingle(events[i], param)
  },
  fireSingle: function(event, param) {
    this.hookTable[event] = this.hookTable[event] || this.calcHooks(event);
    var hooks = this.hookTable[event];
    for(var i in hooks) {
      if(!hooks[i].off)
        hooks[i].fn(param);
    }
  },
  calcHooks: function(event) {
    var hooks = []
    for(var i in this.list) {
      var hook = this.list[i];
      var types = hook.type.split(",");
      for(var i in types) {
        if(types[i] == event)
          hooks.push(hook)  
      }        
    }

    if(hooks.length == 0)
      log("No hooks found for event: " + event)
    hooks.sort(function(a,b) {return a.priority - b.priority})
    return hooks;
  }
};

var Hooks = new HookManager();