gistfile1.js

Y.Plugin.NodeIO = Y.Base.create('node-io', Y.Plugin.Base, [], {
    _inProgress: null,
    _ioHandlers: null,

    initializer: function () {
      this.publish("success", { defaultFn: this._defSuccessFn });

      this.after('uriChange', this._afterUriChange);

      this._ioHandlers = {
          success: Y.bind(this._handleResponse, this, "success"),
          failure: Y.bind(this._handleResponse, this, "failure"),
          timeout: Y.bind(this._handleResponse, this, "timeout")
      };
    },
    
    load : function(uri) {
      var config = this.get("ioConfig");

      uri || (uri = this.get('uri'));
      this.set('uri', uri);

      config.on = this._ioHandlers;

      this._inProgress = Y.io(this.get('uri'), ioConfig);

      return this;
    },
    
    abort : function() {
      this._stopIO();

      return this;
    },
	
    _stopIO : function() {
      if (this._inProgress) {
        this._inProgress.abort();
        this._inProgress = null;
      }
    },

    _handleResponse: function (id, o, type) {
        this.fire(type, { id: id, response: o });
        this._inProgress = null;
    },

    _defSuccessFn : function(e) {
      this.get('host').insert(e.responseText, this.get('placement'));
    },

    _afterUriChange: function () {
      this._stopIO();
    }
  }, {
    NS : 'io',
    ATTRS : {
      uri : {
        validator: Y.Lang.isString
      },

      placement : {
        value : 'replace',
        validator : function(val){
          return /^(?:replace|(?:ap|pre)pend)$/.test(val);
        }
      },

      ioConfig : {
        value: {},
        validator: Y.Lang.isObject
      }
    }
});

// Sugar coated alias
Y.Plugin.NodeIO.prototype.refresh = Y.Plugin.NodeIO.prototype.load;