mx.core.DeferredInstanceFromFunction - Adobe® Flex® 4 Language Reference (Flex 4)

Package	mx.core
Class	public class DeferredInstanceFromFunction
Inheritance	DeferredInstanceFromFunction Object
Implements	ITransientDeferredInstance

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

A deferred instance factory that uses a generator function to create an instance of the required object. An application uses the getInstance() method to create an instance of an object when it is first needed and get a reference to the object thereafter.

See also

DeferredInstanceFromClass

Public Properties

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	Property		Defined By
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object

Public Methods

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	Method		Defined By
		DeferredInstanceFromFunction(generator:Function, destructor:Function = null) Constructor.	DeferredInstanceFromFunction
		getInstance():Object Returns a reference to an instance of the desired object.	DeferredInstanceFromFunction
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		reset():void Resets the state of our factory to the initial, uninitialized state.	DeferredInstanceFromFunction
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object

Constructor Detail

DeferredInstanceFromFunction

()

Constructor

public function DeferredInstanceFromFunction(generator:Function, destructor:Function = null)

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Constructor.

Parameters

	`generator:Function` — A function that creates and returns an instance of the required object.

	`destructor:Function` (default = `null`)

Method Detail

getInstance

()

method

public function getInstance():Object

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Returns a reference to an instance of the desired object. If no instance of the required object exists, calls the function specified in this class' generator constructor parameter.

Returns

Object — An instance of the object.

reset

()

method

public function reset():void

Language Version:

ActionScript 4.0

Product Version:

Flex 4

Runtime Versions:

Flash Player 9, AIR 1.1

Resets the state of our factory to the initial, uninitialized state. The reference to our cached instance is cleared.