| Package | mx.states |
| Class | public class SetEventHandler |
| Inheritance | SetEventHandler  OverrideBase OnDemandEventDispatcher Object |
| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
You use this class in the overrides property of the State class.
Show MXML Syntax
Hide MXML SyntaxThe <mx:SetEventHanlder> tag
has the following attributes:
<mx:SetEventHandler Properties name="null" handlerFunction="null" target="null" Events handler=No default />
More examples
Example: Creating a simple view state
Create and apply view states
Defining view state groups
Example: Controlling layout using view states groups
Learn more
Related API Elements
| Property | Defined By | ||
|---|---|---|---|
 | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
| handlerFunction : Function
The handler function for the event. | SetEventHandler | ||
| name : String
The name of the event whose handler is being set. | SetEventHandler | ||
| originalHandlerFunction : Function
The handler function to remove prior to applying our override. | SetEventHandler | ||
| target : Object
The component that dispatches the event. | SetEventHandler | ||
| Method | Defined By | ||
|---|---|---|---|
Constructor. | SetEventHandler | ||
| addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener
receives notification of an event. | OnDemandEventDispatcher | |
[override]
Applies the override. | SetEventHandler | ||
|
Dispatches an event into the event flow. | OnDemandEventDispatcher | |
|
Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | OnDemandEventDispatcher | |
|
Indicates whether an object has a specified property defined. | Object | |
|
IOverride interface method; this class implements it as an empty method. | OverrideBase | |
|
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
|
Indicates whether the specified property exists and is enumerable. | Object | |
[override]
Removes the override. | SetEventHandler | ||
|
Removes a listener from the EventDispatcher object. | OnDemandEventDispatcher | |
|
Sets the availability of a dynamic property for loop operations. | Object | |
|
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
|
Returns the string representation of the specified object. | Object | |
|
Returns the primitive value of the specified object. | Object | |
|
Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type. | OnDemandEventDispatcher | |
| Event | Summary | Defined By | ||
|---|---|---|---|---|
| The event handler function to execute in response to the event that is specified by the name property. | SetEventHandler | |||
handlerFunction | property |
public var handlerFunction:Function| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
The handler function for the event.
This property is intended for developers who use ActionScript to
create and access view states.
In MXML, you can use the equivalent handler
event attribute; do not use both in a single MXML tag.
The default value is null.
name | property |
public var name:String| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
The name of the event whose handler is being set. You must set this property, either in the SetEventHandler constructor or by setting the property value directly.
originalHandlerFunction | property |
public var originalHandlerFunction:Function| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4.5 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
The handler function to remove prior to applying our override.
The default value is null.
target | property |
public var target:Object| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
The component that dispatches the event.
If the property value is null, Flex uses the
immediate parent of the <mx:states> tag.
The default value is null.
SetEventHandler | () | Constructor |
public function SetEventHandler(target:EventDispatcher = null, name:String = null)| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
Constructor.
Parameterstarget:EventDispatcher (default = null) | |
name:String (default = null) |
apply | () | method |
override public function apply(parent:UIComponent):void| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
Applies the override. Flex retains the original value, so that it can
restore the value later in the remove() method.
This method is called automatically when the state is entered. It should not be called directly.
Parameters
parent:UIComponent — The parent of the state object containing this override.
The override should use this as its target if an explicit target was
not specified.
|
remove | () | method |
override public function remove(parent:UIComponent):void| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
Removes the override. The value remembered in the apply()
method is restored.
This method is called automatically when the state is entered. It should not be called directly.
Parameters
parent:UIComponent — The parent of the state object containing this override.
The override should use this as its target if an explicit target was
not specified.
|
handler | Event |
Object| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
The event handler function to execute in response to the event that is
specified by the name property.
Do not specify the handler property and the handlerFunction
property in a single <mx:SetEventHandler> tag.
Flex does not dispatch a handler event.
You use the handler key word only as an MXML attribte.
When you use the handler handler attribute, you can specify a
method that takes multiple parameters, not just the Event object;
also, you can specify the handler code in-line in the MXML tag.
Thu Dec 6 2018, 01:12 PM -08:00