/*
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This file is part of Ext JS 4.2
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Copyright (c) 2011-2013 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
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published by the Free Software Foundation and appearing in the file LICENSE included in the
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packaging of this file.
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Please review the following information to ensure the GNU General Public License version 3.0
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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
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at http://www.sencha.com/contact.
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Build date: 2013-05-16 14:36:50 (f9be68accb407158ba2b1be2c226a6ce1f649314)
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*/
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/**
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* @class Ext.ComponentManager
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* <p>Provides a registry of all Components (instances of {@link Ext.Component} or any subclass
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* thereof) on a page so that they can be easily accessed by {@link Ext.Component component}
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* {@link Ext.Component#id id} (see {@link #get}, or the convenience method {@link Ext#getCmp Ext.getCmp}).</p>
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* <p>This object also provides a registry of available Component <i>classes</i>
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* indexed by a mnemonic code known as the Component's {@link Ext.Component#xtype xtype}.
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* The <code>xtype</code> provides a way to avoid instantiating child Components
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* when creating a full, nested config object for a complete Ext page.</p>
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* <p>A child Component may be specified simply as a <i>config object</i>
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* as long as the correct <code>{@link Ext.Component#xtype xtype}</code> is specified so that if and when the Component
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* needs rendering, the correct type can be looked up for lazy instantiation.</p>
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* <p>For a list of all available <code>{@link Ext.Component#xtype xtypes}</code>, see {@link Ext.Component}.</p>
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* @singleton
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*/
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Ext.define('Ext.ComponentManager', {
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extend: 'Ext.AbstractManager',
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alternateClassName: 'Ext.ComponentMgr',
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singleton: true,
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typeName: 'xtype',
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/**
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* Creates a new Component from the specified config object using the
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* config object's xtype to determine the class to instantiate.
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* @param {Object} config A configuration object for the Component you wish to create.
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* @param {String} defaultType (optional) The xtype to use if the config object does not
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* contain a <code>xtype</code>. (Optional if the config contains a <code>xtype</code>).
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* @return {Ext.Component} The newly instantiated Component.
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*/
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create: function(component, defaultType){
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if (typeof component == 'string') {
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return Ext.widget(component);
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}
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if (component.isComponent) {
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return component;
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}
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return Ext.widget(component.xtype || defaultType, component);
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},
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registerType: function(type, cls) {
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this.types[type] = cls;
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cls[this.typeName] = type;
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cls.prototype[this.typeName] = type;
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}
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},
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function () {
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/**
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* This is shorthand reference to {@link Ext.ComponentManager#get}.
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* Looks up an existing {@link Ext.Component Component} by {@link Ext.Component#id id}
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*
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* @param {String} id The component {@link Ext.Component#id id}
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* @return Ext.Component The Component, `undefined` if not found, or `null` if a
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* Class was found.
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* @member Ext
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*/
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Ext.getCmp = function(id) {
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return Ext.ComponentManager.get(id);
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};
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});
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