rspec/rules/S1462/flex/rule.adoc

Using plain string event names in even listeners is an anti-pattern; if the event is renamed, the application can start behaving unexpectedly. A constant variable should be used instead.


== Noncompliant Code Example

----
import flash.display.Sprite; 
import flash.events.MouseEvent; 

class ChildSprite extends Sprite 
{ 
    public function ChildSprite() 
    { 
        ...
        addEventListener("CustomEvent", clickHandler);   // Noncompliant
    } 
} 

function clickHandler(event:CustomEvent):void 
{ 
    trace("clickHandler detected an event of type: " + event.type); 
    trace("the this keyword refers to: " + this); 
}
----


== Compliant Solution

----
import flash.display.Sprite; 
import flash.events.MouseEvent; 

class ChildSprite extends Sprite 
{ 
   public const CUSTOM_EVENT:String = "CustomEvent";

    public function ChildSprite() 
    { 
        ...
        addEventListener(CUSTOM_EVENT, clickHandler); 
    } 
} 

function clickHandler(event:CustomEvent):void 
{ 
    trace("clickHandler detected an event of type: " + event.type); 
    trace("the this keyword refers to: " + this); 
}
----