A simple ui collection to handle interaction between components

example.yam.ui.collection.js

 yam.ctor('yam.ui.collection', {
    init: function() {
      this._subscriptions = {};
      this._handleCounter = 0;
    }

  , trigger: function (topic, args) {
      yam.log('ui model trigged '+topic+' event');
      var s = this._subscriptions
        , res = [];

      if (!s[topic]) { return; }
      for (var id in s[topic]) {
        var fn = s[topic][id];
        if (args instanceof Array !== true) {
          args = [args];
        }

        res.push(fn.apply(fn, args || []));
      }

      return res;
    }
    
  , bind: function(topic, fn) {
      yam.log(fn + 'in model binded to '+topic+' event')
      var self = this;

      if (topic instanceof Array === true) {
        var topics = [];
        yam._.each(topic, function (x) {
          topics.push(self.bind(x, fn));
        });
        return topics;
      }

      var id = this._handleCounter, s = this._subscriptions;

      if (!s[topic]) { s[topic] = {}; }
      s[topic][id] = fn;
      this._handleCounter++;

      return [topic, id];
    }
    
    , add: function() {}
  });