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\ No newline at end of file/** + * @class Ext.ComponentManager + * @extends Ext.AbstractManager + * <p>Provides a registry of all Components (instances of {@link Ext.Component} or any subclass + * thereof) on a page so that they can be easily accessed by {@link Ext.Component component} + * {@link Ext.Component#id id} (see {@link #get}, or the convenience method {@link Ext#getCmp Ext.getCmp}).</p> + * <p>This object also provides a registry of available Component <i>classes</i> + * indexed by a mnemonic code known as the Component's {@link Ext.Component#xtype xtype}. + * The <code>xtype</code> provides a way to avoid instantiating child Components + * when creating a full, nested config object for a complete Ext page.</p> + * <p>A child Component may be specified simply as a <i>config object</i> + * as long as the correct <code>{@link Ext.Component#xtype xtype}</code> is specified so that if and when the Component + * needs rendering, the correct type can be looked up for lazy instantiation.</p> + * <p>For a list of all available <code>{@link Ext.Component#xtype xtypes}</code>, see {@link Ext.Component}.</p> + * @singleton + */ +Ext.define('Ext.ComponentManager', { + extend: 'Ext.AbstractManager', + alternateClassName: 'Ext.ComponentMgr', + + singleton: true, + + typeName: 'xtype', + + /** + * Creates a new Component from the specified config object using the + * config object's xtype to determine the class to instantiate. + * @param {Object} config A configuration object for the Component you wish to create. + * @param {Constructor} defaultType The constructor to provide the default Component type if + * the config object does not contain a <code>xtype</code>. (Optional if the config contains a <code>xtype</code>). + * @return {Ext.Component} The newly instantiated Component. + */ + create: function(component, defaultType){ + if (component instanceof Ext.AbstractComponent) { + return component; + } + else if (Ext.isString(component)) { + return Ext.createByAlias('widget.' + component); + } + else { + var type = component.xtype || defaultType, + config = component; + + return Ext.createByAlias('widget.' + type, config); + } + }, + + registerType: function(type, cls) { + this.types[type] = cls; + cls[this.typeName] = type; + cls.prototype[this.typeName] = type; + } +});