The DropDownController class handles the mouse, keyboard, and focus
interactions for an anchor button and its associated drop down.
This class is used by the drop-down components, such as DropDownList,
to handle the opening and closing of the drop down due to user interactions.
When true, resizing the system manager
closes the drop down.
For mobile applications, you can set this property
to false so that the drop down stays open when the
page orientation changes.
The default value is true.
Implementation public function get closeOnResize():Boolean public function set closeOnResize(value:Boolean):void
hitAreaAdditions
property
public var hitAreaAdditions:Vector.<DisplayObject>
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
A list of display objects to consider part of the hit area
of the drop down. Mouse clicks within any component listed
as an inclusion will not automatically close the drop down.
isOpen
property
isOpen:Boolean [read-only]
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
Contains true if the drop down is open.
Implementation public function get isOpen():Boolean
A reference to the openButton skin part
of the drop-down component.
Implementation public function get openButton():ButtonBase public function set openButton(value:ButtonBase):void
rollOverOpenDelay
property
rollOverOpenDelay:Number
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
Specifies the delay, in milliseconds, to wait for opening the drop down
when the anchor button is rolled over.
If set to NaN, then the drop down opens on a click, not a rollover.
The default value is NaN.
Implementation public function get rollOverOpenDelay():Number public function set rollOverOpenDelay(value:Number):void
A reference to the SystemManager used
for mouse tracking. if none is specified, the controller
will use the systemManager associated with the openButton.
Implementation public function get systemManager():ISystemManager public function set systemManager(value:ISystemManager):void
Constructor Detail
DropDownController
()
Constructor
public function DropDownController()
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
Constructor.
Method Detail
closeDropDown
()
method
public function closeDropDown(commit:Boolean):void
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
Close the drop down and dispatch a DropDownEvent.CLOSE event.
Parameters
commit:Boolean — If true, commit the selected
data item.
openDropDown
()
method
public function openDropDown():void
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
Open the drop down and dispatch a DropdownEvent.OPEN event.
processFocusOut
()
method
public function processFocusOut(event:FocusEvent):void
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
Close the drop down if it is no longer in focus.
Parameters
event:FocusEvent — The event object for the FOCUS_OUT event.
processKeyDown
()
method
public function processKeyDown(event:KeyboardEvent):Boolean
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
Handles the keyboard user interactions.
Parameters
event:KeyboardEvent — The event object from the keyboard event.
Returns
Boolean — Returns true if the keyCode was
recognized and handled.
flash.events.EventDispatcher
closeOnResize : Boolean