111 lines
3.8 KiB
JavaScript
111 lines
3.8 KiB
JavaScript
/*
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This file is part of Ext JS 4
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Copyright (c) 2011 Sencha Inc
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Contact: http://www.sencha.com/contact
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GNU General Public License Usage
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This file may be used under the terms of the GNU General Public License version 3.0 as published by the Free Software Foundation and appearing in the file LICENSE included in the packaging of this file. Please review the following information to ensure the GNU General Public License version 3.0 requirements will be met: http://www.gnu.org/copyleft/gpl.html.
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If you are unsure which license is appropriate for your use, please contact the sales department at http://www.sencha.com/contact.
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*/
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/**
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* @class Ext.app.EventBus
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* @private
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*/
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Ext.define('Ext.app.EventBus', {
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requires: [
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'Ext.util.Event'
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],
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mixins: {
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observable: 'Ext.util.Observable'
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},
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constructor: function() {
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this.mixins.observable.constructor.call(this);
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this.bus = {};
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var me = this;
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Ext.override(Ext.Component, {
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fireEvent: function(ev) {
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if (Ext.util.Observable.prototype.fireEvent.apply(this, arguments) !== false) {
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return me.dispatch.call(me, ev, this, arguments);
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}
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return false;
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}
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});
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},
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dispatch: function(ev, target, args) {
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var bus = this.bus,
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selectors = bus[ev],
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selector, controllers, id, events, event, i, ln;
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if (selectors) {
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// Loop over all the selectors that are bound to this event
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for (selector in selectors) {
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// Check if the target matches the selector
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if (target.is(selector)) {
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// Loop over all the controllers that are bound to this selector
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controllers = selectors[selector];
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for (id in controllers) {
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// Loop over all the events that are bound to this selector on this controller
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events = controllers[id];
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for (i = 0, ln = events.length; i < ln; i++) {
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event = events[i];
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// Fire the event!
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if (event.fire.apply(event, Array.prototype.slice.call(args, 1)) === false) {
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return false;
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};
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}
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}
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}
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}
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}
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},
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control: function(selectors, listeners, controller) {
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var bus = this.bus,
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selector, fn;
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if (Ext.isString(selectors)) {
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selector = selectors;
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selectors = {};
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selectors[selector] = listeners;
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this.control(selectors, null, controller);
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return;
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}
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Ext.Object.each(selectors, function(selector, listeners) {
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Ext.Object.each(listeners, function(ev, listener) {
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var options = {},
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scope = controller,
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event = Ext.create('Ext.util.Event', controller, ev);
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// Normalize the listener
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if (Ext.isObject(listener)) {
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options = listener;
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listener = options.fn;
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scope = options.scope || controller;
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delete options.fn;
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delete options.scope;
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}
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event.addListener(listener, scope, options);
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// Create the bus tree if it is not there yet
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bus[ev] = bus[ev] || {};
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bus[ev][selector] = bus[ev][selector] || {};
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bus[ev][selector][controller.id] = bus[ev][selector][controller.id] || [];
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// Push our listener in our bus
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bus[ev][selector][controller.id].push(event);
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});
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});
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}
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});
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