Class Ext.ComponentMgr

Package:	Ext
Defined In:	ComponentMgr.js
Class:	ComponentMgr
Extends:	Object

Provides a registry of all Components (instances of Ext.Component or any subclass thereof) on a page so that they can be easily accessed by component id (see get, or the convenience method Ext.getCmp).

This object also provides a registry of available Component classes indexed by a mnemonic code known as the Component's xtype. The xtype provides a way to avoid instantiating child Components when creating a full, nested config object for a complete Ext page.

A child Component may be specified simply as a config object as long as the correct xtype is specified so that if and when the Component needs rendering, the correct type can be looked up for lazy instantiation.

For a list of all available xtypes, see Ext.Component.

This class is a singleton and cannot be created directly.

Public Properties

Property		Defined By
	all : MixedCollection The MixedCollection used internally for the component cache. An example usage may be subscribing to events on the Mix... The MixedCollection used internally for the component cache. An example usage may be subscribing to events on the MixedCollection to monitor addition or removal. Read-only.	ComponentMgr

Public Methods

Method		Defined By
	create( `config {Object}`, `defaultType {Constructor}` ) : Ext.Component Creates a new Component from the specified config object using the config object's xtype to determine the class to in... Creates a new Component from the specified config object using the config object's xtype to determine the class to instantiate. Parameters: `{Object}` : config A configuration object for the Component you wish to create. `{Constructor}` : defaultType The constructor to provide the default Component type if the config object does not contain an xtype. (Optional if the config contains an xtype). Returns: `Ext.Component` The newly instantiated Component.	ComponentMgr
	get( `String id` ) : Ext.Component Returns a component by id Returns a component by id Parameters: `id` : String The component id Returns: `Ext.Component`	ComponentMgr
	onAvailable( `String id`, `Function fn`, `Object scope` ) : void Registers a function that will be called when a specified component is added to ComponentMgr Registers a function that will be called when a specified component is added to ComponentMgr Parameters: `id` : String The component id `fn` : Function The callback function `scope` : Object The scope of the callback Returns: `void`	ComponentMgr
	register( `Ext.Component c` ) : void Registers a component. Registers a component. Parameters: `c` : Ext.Component The component Returns: `void`	ComponentMgr
	registerType( `String xtype`, `Constructor cls` ) : void Registers a new Component constructor, keyed by a new Ext.Component.xtype. Use this method to register new subclasses... Registers a new Component constructor, keyed by a new Ext.Component.xtype. Use this method to register new subclasses of Ext.Component so that lazy instantiation may be used when specifying child Components. see Ext.Container.items Parameters: `xtype` : String The mnemonic string by which the Component class may be looked up. `cls` : Constructor The new Component class. Returns: `void`	ComponentMgr
	unregister( `Ext.Component c` ) : void Unregisters a component. Unregisters a component. Parameters: `c` : Ext.Component The component Returns: `void`	ComponentMgr

Public Events

This class has no public events.