class as event handler in node?

events.js

function EventListener() {}

EventListener.prototype.listen_to = function (that) {
    for (var key in this) {
        var event;
        if(event = /^handle_(.+)$/.exec(key)){
            var method = [this, this[event[0]]];
            that.on( event[1], function() {
                method[1].apply(method[0], arguments);
            });
        }
    }
};

exports.EventListener = EventListener;

test.js

var EventEmitter  = require('events').EventEmitter;
var EventListener = require('./events.js').EventListener;

function Emitter () {}

Emitter.prototype = new EventEmitter();

function Listener () {}

Listener.prototype = new EventListener();

Listener.prototype.handle_foo = function (arg) {
    console.log('got foo ' + arg);
}

var emitter = new Emitter();
var listener = new Listener();

listener.state = 'test';
listener.listen_to(emitter);

emitter.emit('foo', 'bar');