Adobe FLEX 2 - CREATING AND EXTENDING COMPONENTS Manual page 56

You insert the
[Effect]
the block in an MXML file. The
<mx:Metadata>
syntax:
[Effect(name="eventNameEffect", event="eventName")]
The following table describes the properties of the [
Property Type
eventNameEffect String
eventName String
The metadata tag is often paired with an
[Effect]
metadata tag defines the event corresponding to the effect's trigger. By convention,
[Event]
the name of the effect is the event name with the suffix
an ActionScript file shows:
// Define event corresponding to the effect trigger.
[Event(name="darken", type="flash.events.Event")]
// Define the effect.
[Effect(name="darkenEffect", event="darken")]
class ModalText extends TextArea {
...
}
In an MXML file, you can define the event and effect in an
following example shows:
<mx:Metadata>
[Event(name="darken", type="flash.events.Event")]
[Effect(name="darkenEffect", event="darken")]
</mx:Metadata>
Event metadata tag
Use the metadata tag to define the MXML property for an event and the data type of
[Event]
the event object that a component emits. You insert the
definition in an ActionScript file, or in the
For more information on defining custom events, see
on page 35.
The metadata tag has the following syntax:
[Event]
[Event(name="eventName", type="package.eventType")]
56 Using Metadata Tags in Custom Components
metadata tag before the class definition in an ActionScript file, or in
Description
Specifies the name of the effect.
Specifies the name of the event that triggers the effect.
<mx:Metadata>
metadata tag has the following
[Effect]
metadata tag:
Effect]
metadata tag, where the
[Event]
, as the following example of
Effect
<mx:Metadata>
metadata tag before the class
[Event]
block in an MXML file.
Chapter 4, "Creating Custom Events,"
block, as the