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

Package	mx.core
Class	public final class EventPriority
Inheritance	EventPriority Object

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

The EventPriority class defines constant values for the priority argument of the addEventListener() method of EventDispatcher.

The higher the number, the higher the priority of the event listener. All listeners with priority N will be processed before listeners of priority N - 1. If two or more listeners share the same priority, they are processed in the order in which they were added.

Priorities can be positive, 0, or negative. The default priority is 0.

You should not write code that depends on the numeric values of these constants. They are subject to change in future versions of Flex.

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
		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
		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

Public Constants

	Constant		Defined By
		BINDING : int = 100 [static] Autogenerated event handlers that evaluate data-binding expressions need to be executed before any others, so they have a higher priority than the default.	EventPriority
		CURSOR_MANAGEMENT : int = 200 [static] The CursorManager has handlers for mouse events which must be executed before other mouse event handlers, so they have a high priority.	EventPriority
		DEFAULT : int = 0 [static] Event handlers on component instances are executed with the default priority, 0.	EventPriority
		DEFAULT_HANDLER : int = -50 [static] Some components listen to events that they dispatch on themselves and let other listeners call the preventDefault() method to tell the component not to perform a default action.	EventPriority
		EFFECT : int = -100 [static] Autogenerated event handlers that trigger effects are executed after other event handlers on component instances, so they have a lower priority than the default.	EventPriority

Constant Detail

BINDING

Constant

public static const BINDING:int = 100

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Autogenerated event handlers that evaluate data-binding expressions need to be executed before any others, so they have a higher priority than the default.

CURSOR_MANAGEMENT

Constant

public static const CURSOR_MANAGEMENT:int = 200

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

The CursorManager has handlers for mouse events which must be executed before other mouse event handlers, so they have a high priority.

DEFAULT

Constant

public static const DEFAULT:int = 0

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Event handlers on component instances are executed with the default priority, 0.

DEFAULT_HANDLER

Constant

public static const DEFAULT_HANDLER:int = -50

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Some components listen to events that they dispatch on themselves and let other listeners call the preventDefault() method to tell the component not to perform a default action. Those components must listen with a lower priority than the default priority, so that the other handlers are executed first and have a chance to call preventDefault().

EFFECT

Constant

public static const EFFECT:int = -100

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Autogenerated event handlers that trigger effects are executed after other event handlers on component instances, so they have a lower priority than the default.