    /**
     * @class Ext.app.EventBus
     * @private
     *
     * Class documentation for the MVC classes will be present before 4.0 final, in the mean time please refer to the MVC
     * guide
     */
    Ext.define('Ext.app.EventBus', {
        requires: [
            'Ext.util.Event'
        ],
        mixins: {
            observable: 'Ext.util.Observable'
        },

        constructor: function() {
            this.mixins.observable.constructor.call(this);

            this.bus = {};

            var me = this;
            Ext.override(Ext.Component, {
                fireEvent: function(ev) {
                    if (Ext.util.Observable.prototype.fireEvent.apply(this, arguments) !== false) {
                        return me.dispatch.call(me, ev, this, arguments);
                    }
                    return false;
                }
            });
        },

        dispatch: function(ev, target, args) {
            var bus = this.bus,
                selectors = bus[ev],
                selector, controllers, id, events, event, i, ln;

            if (selectors) {
                // Loop over all the selectors that are bound to this event
                for (selector in selectors) {
                    // Check if the target matches the selector
                    if (target.is(selector)) {
                        // Loop over all the controllers that are bound to this selector
                        controllers = selectors[selector];
                        for (id in controllers) {
                            // Loop over all the events that are bound to this selector on this controller
                            events = controllers[id];
                            for (i = 0, ln = events.length; i < ln; i++) {
                                event = events[i];
                                // Fire the event!
                                return event.fire.apply(event, Array.prototype.slice.call(args, 1));
                            }
                        }
                    }
                }
            }
        },

        control: function(selectors, listeners, controller) {
            var bus = this.bus,
                selector, fn;

            if (Ext.isString(selectors)) {
                selector = selectors;
                selectors = {};
                selectors[selector] = listeners;
                this.control(selectors, null, controller);
                return;
            }

            Ext.Object.each(selectors, function(selector, listeners) {
                Ext.Object.each(listeners, function(ev, listener) {
                    var options = {},
                        scope = controller,
                        event = Ext.create('Ext.util.Event', controller, ev);

                    // Normalize the listener
                    if (Ext.isObject(listener)) {
                        options = listener;
                        listener = options.fn;
                        scope = options.scope || controller;
                        delete options.fn;
                        delete options.scope;
                    }

                    event.addListener(listener, scope, options);

                    // Create the bus tree if it is not there yet
                    bus[ev] = bus[ev] || {};
                    bus[ev][selector] = bus[ev][selector] || {};
                    bus[ev][selector][controller.id] = bus[ev][selector][controller.id] || [];

                    // Push our listener in our bus
                    bus[ev][selector][controller.id].push(event);
                });
            });
        }
    });