| Package | spark.components.supportClasses |
| Class | public class DropDownListBase |
| Inheritance | DropDownListBase  List ListBase SkinnableDataContainer SkinnableContainerBase SkinnableComponent UIComponent FlexSprite flash.display.Sprite |
| Subclasses | ComboBox, DropDownList |
| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 4 |
| Runtime Versions : | Flash Player 10, AIR 1.5 |
The DropDownListBase control consists of the anchor button, and drop-down-list. Use the anchor button to open and close the drop-down-list.
When the drop-down list is open:
requireSelection property is false,
clicking on a data item while pressing the Control key deselects
the item and closes the drop-down list.
Hide MXML SyntaxThe <s:DropDownListBase> tag inherits all of the tag
attributes of its superclass and adds the following attributes:
Show MXML Syntax
<s:DropDownListBase
Styles
cornerRadius="4"
dropShadowVisible="true"
Events
closed="No default"
open="No default"
/>
Default MXML PropertydataProvider
See also
| Property | Defined By | ||
|---|---|---|---|
 | accessibilityDescription : String
A convenience accessor for the description property
in this UIComponent's accessibilityProperties object. | UIComponent | |
| accessibilityEnabled : Boolean
A convenience accessor for the silent property
in this UIComponent's accessibilityProperties object. | UIComponent | |
| accessibilityName : String
A convenience accessor for the name property
in this UIComponent's accessibilityProperties object. | UIComponent | |
| accessibilityShortcut : String
A convenience accessor for the shortcut property
in this UIComponent's accessibilityProperties object. | UIComponent | |
| activeEffects : Array [read-only]
The list of effects that are currently playing on the component,
as an Array of EffectInstance instances. | UIComponent | |
| arrowKeysWrapFocus : Boolean
If true, using arrow keys to navigate within
the component wraps when it hits either end. | ListBase | |
| autoLayout : Boolean
If true, measurement and layout are done
when the position or size of a child is changed. | SkinnableDataContainer | |
| automationDelegate : Object
The delegate object that handles the automation-related functionality. | UIComponent | |
| automationEnabled : Boolean [read-only]
True if this component is enabled for automation, false
otherwise. | UIComponent | |
| automationName : String
Name that can be used as an identifier for this object. | UIComponent | |
| automationOwner : DisplayObjectContainer [read-only]
The owner of this component for automation purposes. | UIComponent | |
| automationParent : DisplayObjectContainer [read-only]
The parent of this component for automation purposes. | UIComponent | |
| automationTabularData : Object [read-only]
An implementation of the IAutomationTabularData interface, which
can be used to retrieve the data. | UIComponent | |
| automationValue : Array [read-only]
This value generally corresponds to the rendered appearance of the
object and should be usable for correlating the identifier with
the object as it appears visually within the application. | UIComponent | |
| automationVisible : Boolean [read-only]
True if this component is visible for automation, false
otherwise. | UIComponent | |
| baseline : Object
For components, this layout constraint property is a
facade on top of the similarly-named style. | UIComponent | |
| baselinePosition : Number [override] [read-only]
The y-coordinate of the baseline
of the first line of text of the component. | SkinnableComponent | |
| bottom : Object
For components, this layout constraint property is a
facade on top of the similarly-named style. | UIComponent | |
| cacheHeuristic : Boolean [write-only]
Used by Flex to suggest bitmap caching for the object. | UIComponent | |
| cachePolicy : String
Specifies the bitmap caching policy for this object. | UIComponent | |
| caretIndex : Number [read-only]
Item that is currently in focus. | ListBase | |
| className : String [read-only]
The name of this instance's class, such as "Button". | UIComponent | |
| closeDropDownOnResize : Boolean
When true, resizing the system manager
closes the drop down. | DropDownListBase | ||
| contentMouseX : Number [read-only]
Returns the x position of the mouse, in the content coordinate system. | UIComponent | |
| contentMouseY : Number [read-only]
Returns the y position of the mouse, in the content coordinate system. | UIComponent | |
| currentState : String
The current view state of the component. | UIComponent | |
| cursorManager : ICursorManager [read-only]
Gets the CursorManager that controls the cursor for this component
and its peers. | UIComponent | |
| dataProvider : IList
The data provider for this DataGroup. | SkinnableDataContainer | |
| defaultButton : IFlexDisplayObject
The Button control designated as the default button for the container. | SkinnableContainerBase | |
| depth : Number
Determines the order in which items inside of containers
are rendered. | UIComponent | |
| descriptor : UIComponentDescriptor
Reference to the UIComponentDescriptor, if any, that was used
by the createComponentFromDescriptor() method to create this
UIComponent instance. | UIComponent | |
| designLayer : DesignLayer
Specifies the optional DesignLayer instance associated with this visual
element. | UIComponent | |
| document : Object
A reference to the document object associated with this UIComponent. | UIComponent | |
| doubleClickEnabled : Boolean [override]
Specifies whether the UIComponent object receives doubleClick events. | UIComponent | |
| enabled : Boolean
Whether the component can accept user interaction. | UIComponent | |
| errorString : String
The text that displayed by a component's error tip when a
component is monitored by a Validator and validation fails. | UIComponent | |
| explicitHeight : Number
Number that specifies the explicit height of the component,
in pixels, in the component's coordinates. | UIComponent | |
| explicitMaxHeight : Number
The maximum recommended height of the component to be considered
by the parent during layout. | UIComponent | |
| explicitMaxWidth : Number
The maximum recommended width of the component to be considered
by the parent during layout. | UIComponent | |
| explicitMinHeight : Number
The minimum recommended height of the component to be considered
by the parent during layout. | UIComponent | |
| explicitMinWidth : Number
The minimum recommended width of the component to be considered
by the parent during layout. | UIComponent | |
| explicitWidth : Number
Number that specifies the explicit width of the component,
in pixels, in the component's coordinates. | UIComponent | |
| flexContextMenu : IFlexContextMenu
The context menu for this UIComponent. | UIComponent | |
| focusEnabled : Boolean
Indicates whether the component can receive focus when tabbed to. | UIComponent | |
| focusManager : IFocusManager
Gets the FocusManager that controls focus for this component
and its peers. | UIComponent | |
| focusPane : Sprite
The focus pane associated with this object. | UIComponent | |
| hasFocusableChildren : Boolean [override]
A flag that indicates whether this List's focusable item renderers
can take keyboard focus. | List | |
| hasLayoutMatrix3D : Boolean [read-only]
Contains true if the element has 3D Matrix. | UIComponent | |
| height : Number [override]
Number that specifies the height of the component, in pixels,
in the parent's coordinates. | UIComponent | |
| horizontalCenter : Object
For components, this layout constraint property is a
facade on top of the similarly-named style. | UIComponent | |
| id : String
ID of the component. | UIComponent | |
| includeInLayout : Boolean
Specifies whether this component is included in the layout of the
parent container. | UIComponent | |
| inheritingStyles : Object
The beginning of this component's chain of inheriting styles. | UIComponent | |
| initialized : Boolean
A flag that determines if an object has been through all three phases
of layout: commitment, measurement, and layout (provided that any were required). | UIComponent | |
| instanceIndex : int [read-only]
The index of a repeated component. | UIComponent | |
| instanceIndices : Array
An Array containing the indices required to reference
this UIComponent object from its parent document. | UIComponent | |
| is3D : Boolean [read-only]
Contains true when the element is in 3D. | UIComponent | |
| isDocument : Boolean [read-only]
Contains true if this UIComponent instance is a document object. | UIComponent | |
| isDropDownOpen : Boolean [read-only]
Contains true if the drop down is open. | DropDownListBase | ||
| isFirstRow : Boolean [read-only]
Returns if the selectedIndex is equal to the first row. | ListBase | |
| isLastRow : Boolean [read-only]
Returns if the selectedIndex is equal to the last row. | ListBase | |
| isPopUp : Boolean
Set to true by the PopUpManager to indicate
that component has been popped up. | UIComponent | |
| itemRenderer : IFactory
The item renderer to use for data items. | SkinnableDataContainer | |
| itemRendererFunction : Function
Function that returns an item renderer IFactory for a
specific item. | SkinnableDataContainer | |
| labelField : String
The name of the field in the data provider items to display
as the label. | ListBase | |
| labelFunction : Function
A user-supplied function to run on each item to determine its label. | ListBase | |
| layout : LayoutBase
The layout object for this container. | SkinnableDataContainer | |
| layoutMatrix3D : Matrix3D [write-only]
The transform matrix that is used to calculate a component's layout
relative to its siblings. | UIComponent | |
| left : Object
For components, this layout constraint property is a
facade on top of the similarly-named style. | UIComponent | |
| maintainProjectionCenter : Boolean
When true, the component keeps its projection matrix centered on the
middle of its bounding box. | UIComponent | |
| maxHeight : Number
The maximum recommended height of the component to be considered
by the parent during layout. | UIComponent | |
| maxWidth : Number
The maximum recommended width of the component to be considered
by the parent during layout. | UIComponent | |
| measuredHeight : Number
The default height of the component, in pixels. | UIComponent | |
| measuredMinHeight : Number
The default minimum height of the component, in pixels. | UIComponent | |
| measuredMinWidth : Number
The default minimum width of the component, in pixels. | UIComponent | |
| measuredWidth : Number
The default width of the component, in pixels. | UIComponent | |
| minHeight : Number
The minimum recommended height of the component to be considered
by the parent during layout. | UIComponent | |
| minWidth : Number
The minimum recommended width of the component to be considered
by the parent during layout. | UIComponent | |
| moduleFactory : IFlexModuleFactory
A module factory is used as context for using embedded fonts and for
finding the style manager that controls the styles for this
component. | UIComponent | |
| mouseFocusEnabled : Boolean
Whether you can receive focus when clicked on. | UIComponent | |
| MXMLDescriptor : Array [read-only] | UIComponent | |
| MXMLProperties : Array [read-only] | UIComponent | |
| nestLevel : int
Depth of this object in the containment hierarchy. | UIComponent | |
| nonInheritingStyles : Object
The beginning of this component's chain of non-inheriting styles. | UIComponent | |
| numAutomationChildren : int [read-only]
The number of automation children this container has. | UIComponent | |
| owner : DisplayObjectContainer
The owner of this IVisualElement object. | UIComponent | |
|  pageScrollingEnabled : Boolean
Whether page scrolling is currently enabled for this Scroller
| List | |
| parent : DisplayObjectContainer [override] [read-only]
The parent container or component for this component. | UIComponent | |
| parentApplication : Object [read-only]
A reference to the Application object that contains this UIComponent
instance. | UIComponent | |
| parentDocument : Object [read-only]
A reference to the parent document object for this UIComponent. | UIComponent | |
| percentHeight : Number
Specifies the height of a component as a percentage
of its parent's size. | UIComponent | |
| percentWidth : Number
Specifies the width of a component as a percentage
of its parent's size. | UIComponent | |
| postLayoutTransformOffsets : TransformOffsets
Defines a set of adjustments that can be applied to the object's
transform in a way that is invisible to its parent's layout. | UIComponent | |
| preventSelection : Boolean
If true items will be prevented from being selected. | ListBase | |
| processedDescriptors : Boolean
Set to true after immediate or deferred child creation,
depending on which one happens. | UIComponent | |
| repeater : IRepeater [read-only]
A reference to the Repeater object
in the parent document that produced this UIComponent. | UIComponent | |
| repeaterIndex : int [read-only]
The index of the item in the data provider
of the Repeater that produced this UIComponent. | UIComponent | |
| repeaterIndices : Array
An Array containing the indices of the items in the data provider
of the Repeaters in the parent document that produced this UIComponent. | UIComponent | |
| repeaters : Array
An Array containing references to the Repeater objects
in the parent document that produced this UIComponent. | UIComponent | |
| requireSelection : Boolean
If true, a data item must always be selected in the control. | ListBase | |
| right : Object
For components, this layout constraint property is a
facade on top of the similarly-named style. | UIComponent | |
| rotation : Number [override] | UIComponent | |
| rotationX : Number [override]
Indicates the x-axis rotation of the DisplayObject instance, in degrees, from its original orientation
relative to the 3D parent container. | UIComponent | |
| rotationY : Number [override]
Indicates the y-axis rotation of the DisplayObject instance, in degrees, from its original orientation
relative to the 3D parent container. | UIComponent | |
| rotationZ : Number [override]
| UIComponent | |
| scaleX : Number [override]
Number that specifies the horizontal scaling factor. | UIComponent | |
| scaleY : Number [override]
Number that specifies the vertical scaling factor. | UIComponent | |
| scaleZ : Number [override]
Number that specifies the scaling factor along the z axis. | UIComponent | |
| screen : Rectangle [read-only]
Returns an object that contains the size and position of the base
drawing surface for this object. | UIComponent | |
| scrollSnappingMode : String
The scroll snapping mode currently in effect for this Scroller
Changing this property to anything other than "none" may
result in an immediate change in scroll position to ensure
an element is correctly "snapped" into position. | List | |
| selectedIndex : int
The 0-based index of the selected item, or -1 if no item is selected. | ListBase | |
| selectedItem : *
The item that is currently selected. | ListBase | |
| showInAutomationHierarchy : Boolean
A flag that determines if an automation object
shows in the automation hierarchy. | UIComponent | |
| skin : UIComponent [read-only]
The instance of the skin class for this component instance. | SkinnableComponent | |
| states : Array
The view states that are defined for this component. | UIComponent | |
| styleDeclaration : CSSStyleDeclaration
Storage for the inline inheriting styles on this object. | UIComponent | |
| styleManager : IStyleManager2 [read-only]
Returns the StyleManager instance used by this component. | UIComponent | |
| styleName : Object
The class style used by this component. | UIComponent | |
| styleParent : IAdvancedStyleClient
A component's parent is used to evaluate descendant selectors. | UIComponent | |
| suggestedFocusSkinExclusions : Array [read-only]
Lists the skin parts that are
excluded from bitmaps captured and used to
show focus. | SkinnableComponent | |
| systemManager : ISystemManager
Returns the SystemManager object used by this component. | UIComponent | |
| tabFocusEnabled : Boolean
A flag that indicates whether this object can receive focus
via the TAB key
This is similar to the tabEnabled property
used by the Flash Player.
This is usually true for components that
handle keyboard input, but some components in controlbars
have them set to false because they should not steal
focus from another component like an editor. | UIComponent | |
| toolTip : String
Text to display in the ToolTip. | UIComponent | |
| top : Object
For components, this layout constraint property is a
facade on top of the similarly-named style. | UIComponent | |
| transform : Transform [override]
An object with properties pertaining to a display object's matrix, color transform,
and pixel bounds. | UIComponent | |
| transformX : Number
Sets the x coordinate for the transform center of the component. | UIComponent | |
| transformY : Number
Sets the y coordinate for the transform center of the component. | UIComponent | |
| transformZ : Number
Sets the z coordinate for the transform center of the component. | UIComponent | |
| transitions : Array
An Array of Transition objects, where each Transition object defines a
set of effects to play when a view state change occurs. | UIComponent | |
| tweeningProperties : Array
Array of properties that are currently being tweened on this object. | UIComponent | |
| typicalItem : Object
Layouts use the preferred size of the typicalItem
when fixed row or column sizes are required, but a specific
rowHeight or columnWidth value is not set. | SkinnableDataContainer | |
| uid : String
A unique identifier for the object. | UIComponent | |
| updateCompletePendingFlag : Boolean
A flag that determines if an object has been through all three phases
of layout validation (provided that any were required). | UIComponent | |
| useVirtualLayout : Boolean [override]
Sets the value of the useVirtualLayout property
of the layout associated with this control. | List | |
| validationSubField : String
Used by a validator to associate a subfield with this component. | UIComponent | |
| verticalCenter : Object
For components, this layout constraint property is a
facade on top of the similarly-named style. | UIComponent | |
| visible : Boolean [override]
Whether or not the display object is visible. | UIComponent | |
| width : Number [override]
Number that specifies the width of the component, in pixels,
in the parent's coordinates. | UIComponent | |
| x : Number [override]
Number that specifies the component's horizontal position,
in pixels, within its parent container. | UIComponent | |
| y : Number [override]
Number that specifies the component's vertical position,
in pixels, within its parent container. | UIComponent | |
| z : Number [override]
| UIComponent | |
| Property | Defined By | ||
|---|---|---|---|
| currentCSSState : String [override] [read-only]
The state to be used when matching CSS pseudo-selectors. | SkinnableComponent | |
| dropDownController : DropDownController
Instance of the DropDownController class that handles all of the mouse, keyboard
and focus user interactions. | DropDownListBase | ||
| hasComplexLayoutMatrix : Boolean [read-only]
Returns true if the UIComponent has any non-translation (x,y) transform properties. | UIComponent | |
| resourceManager : IResourceManager [read-only]
A reference to the object which manages
all of the application's localized resources. | UIComponent | |
| unscaledHeight : Number [read-only]
A convenience method for determining the unscaled height
of the component. | UIComponent | |
| unscaledWidth : Number [read-only]
A convenience method for determining the unscaled width
of the component
All of a component's drawing and child layout should be done
within a bounding rectangle of this width, which is also passed
as an argument to updateDisplayList(). | UIComponent | |
| Method | Defined By | ||
|---|---|---|---|
Constructor. | DropDownListBase | ||
| addDragData(dragSource:DragSource):void
Adds the selected items to the DragSource object as part of
a drag-and-drop operation. | List | |
| addStyleClient(styleClient:IAdvancedStyleClient):void
Adds a non-visual style client to this component instance. | UIComponent | |
| callLater(method:Function, args:Array = null):void
Queues a function to be called later. | UIComponent | |
| clearStyle(styleProp:String):void
Deletes a style property from this component instance. | UIComponent | |
closeDropDown(commit:Boolean):void
Close the drop-down list and dispatch a DropDownEvent.CLOSE event. | DropDownListBase | ||
| contentToGlobal(point:Point):Point
Converts a Point object from content coordinates to global coordinates. | UIComponent | |
| contentToLocal(point:Point):Point
Converts a Point object from content to local coordinates. | UIComponent | |
| createAutomationIDPart(child:IAutomationObject):Object
Returns a set of properties that identify the child within
this container. | UIComponent | |
| createAutomationIDPartWithRequiredProperties(child:IAutomationObject, properties:Array):Object
Returns a set of properties as automation IDs that identify the child within
this container. | UIComponent | |
|
Creates an instance of a class that is used to display the visuals
of the dragged items during a drag and drop operation. | List | |
| createDropIndicator():DisplayObject
Creates and instance of the dropIndicator class that is used to
display the visuals of the drop location during a drag and drop
operation. | List | |
| createReferenceOnParentDocument(parentDocument:IFlexDisplayObject):void
Creates an id reference to this IUIComponent object
on its parent document object. | UIComponent | |
| deleteReferenceOnParentDocument(parentDocument:IFlexDisplayObject):void
Deletes the id reference to this IUIComponent object
on its parent document object. | UIComponent | |
| destroyDropIndicator():DisplayObject
Releases the dropIndicator instance that is currently set in the layout. | List | |
|
Returns a UITextFormat object corresponding to the text styles
for this UIComponent. | UIComponent | |
| dispatchEvent(event:Event):Boolean [override]
Dispatches an event into the event flow. | UIComponent | |
| drawFocus(isFocused:Boolean):void
Shows or hides the focus indicator around this component. | UIComponent | |
| drawRoundRect(x:Number, y:Number, w:Number, h:Number, r:Object = null, c:Object = null, alpha:Object = null, rot:Object = null, gradient:String = null, ratios:Array = null, hole:Object = null):void
Programmatically draws a rectangle into this skin's Graphics object. | UIComponent | |
| effectFinished(effectInst:IEffectInstance):void
Called by the effect instance when it stops playing on the component. | UIComponent | |
| effectStarted(effectInst:IEffectInstance):void
Called by the effect instance when it starts playing on the component. | UIComponent | |
| endEffectsStarted():void
Ends all currently playing effects on the component. | UIComponent | |
| ensureIndexIsVisible(index:int):void
A convenience method that handles scrolling a data item
into view. | List | |
| executeBindings(recurse:Boolean = false):void
Executes all the bindings for which the UIComponent object is the destination. | UIComponent | |
| findRowIndex(field:String, value:String, startingIndex:int = 0, patternType:String):int
This will search through a dataprovider checking the given field and for the given value and return the index for the match. | ListBase | |
| findRowIndices(field:String, values:Array, patternType:String):Array
This will search through a dataprovider checking the given field and for the given values and return an array of indices that matched. | ListBase | |
| finishPrint(obj:Object, target:IFlexDisplayObject):void
Called after printing is complete. | UIComponent | |
| generateMXMLArray(document:Object, data:Array, recursive:Boolean = true):Array | UIComponent | |
| generateMXMLVector(document:Object, data:Array, recursive:Boolean = true):* | UIComponent | |
| getAutomationChildAt(index:int):IAutomationObject
Provides the automation object at the specified index. | UIComponent | |
| getAutomationChildren():Array
Provides the automation object list . | UIComponent | |
| getBoundsXAtSize(width:Number, height:Number, postLayoutTransform:Boolean = true):Number
Returns the x coordinate of the element's bounds at the specified element size. | UIComponent | |
| getBoundsYAtSize(width:Number, height:Number, postLayoutTransform:Boolean = true):Number
Returns the y coordinate of the element's bounds at the specified element size. | UIComponent | |
| getClassStyleDeclarations():Array
Finds the type selectors for this UIComponent instance. | UIComponent | |
| getConstraintValue(constraintName:String):*
Returns a layout constraint value, which is the same as
getting the constraint style for this component. | UIComponent | |
| getExplicitOrMeasuredHeight():Number
A convenience method for determining whether to use the
explicit or measured height
| UIComponent | |
| getExplicitOrMeasuredWidth():Number
A convenience method for determining whether to use the
explicit or measured width
| UIComponent | |
| getFocus():InteractiveObject
Gets the object that currently has focus. | UIComponent | |
| getLayoutBoundsHeight(postLayoutTransform:Boolean = true):Number
Returns the element's layout height. | UIComponent | |
| getLayoutBoundsWidth(postLayoutTransform:Boolean = true):Number
Returns the element's layout width. | UIComponent | |
| getLayoutBoundsX(postLayoutTransform:Boolean = true):Number
Returns the x coordinate that the element uses to draw on screen. | UIComponent | |
| getLayoutBoundsY(postLayoutTransform:Boolean = true):Number
Returns the y coordinate that the element uses to draw on screen. | UIComponent | |
| getLayoutMatrix():Matrix
Returns the transform matrix that is used to calculate the component's
layout relative to its siblings. | UIComponent | |
| getLayoutMatrix3D():Matrix3D
Returns the layout transform Matrix3D for this element. | UIComponent | |
| getMaxBoundsHeight(postLayoutTransform:Boolean = true):Number
Returns the element's maximum height. | UIComponent | |
| getMaxBoundsWidth(postLayoutTransform:Boolean = true):Number
Returns the element's maximum width. | UIComponent | |
| getMinBoundsHeight(postLayoutTransform:Boolean = true):Number
Returns the element's minimum height. | UIComponent | |
| getMinBoundsWidth(postLayoutTransform:Boolean = true):Number
Returns the element's minimum width. | UIComponent | |
| getPreferredBoundsHeight(postLayoutTransform:Boolean = true):Number
Returns the element's preferred height. | UIComponent | |
| getPreferredBoundsWidth(postLayoutTransform:Boolean = true):Number
Returns the element's preferred width. | UIComponent | |
| getRepeaterItem(whichRepeater:int = -1):Object
Returns the item in the dataProvider that was used
by the specified Repeater to produce this Repeater, or
null if this Repeater isn't repeated. | UIComponent | |
| getStyle(styleProp:String):*
Gets a style property that has been set anywhere in this
component's style lookup chain. | UIComponent | |
| getVisibleRect(targetParent:DisplayObject = null):Rectangle
Get the bounds of this object that are visible to the user
on the screen. | UIComponent | |
| globalToContent(point:Point):Point
Converts a Point object from global to content coordinates. | UIComponent | |
| hasCSSState():Boolean
Returns true if currentCSSState is not null. | UIComponent | |
| hasState(stateName:String):Boolean
Determines whether the specified state has been defined on this
UIComponent. | UIComponent | |
| horizontalGradientMatrix(x:Number, y:Number, width:Number, height:Number):Matrix
Returns a box Matrix which can be passed to the
drawRoundRect() method
as the rot parameter when drawing a horizontal gradient. | UIComponent | |
| initialize():void
Initializes the internal structure of this component. | UIComponent | |
| initializeRepeaterArrays(parent:IRepeaterClient):void
Initializes various properties which keep track of repeated instances
of this component. | UIComponent | |
| invalidateDisplayList():void
Marks a component so that its updateDisplayList()
method gets called during a later screen update. | UIComponent | |
| invalidateLayering():void
Called by a component's items to indicate that their depth
property has changed. | UIComponent | |
| invalidateLayoutDirection():void
An element must call this method when its layoutDirection changes or
when its parent's layoutDirection changes. | UIComponent | |
| invalidateProperties():void
Marks a component so that its commitProperties()
method gets called during a later screen update. | UIComponent | |
| invalidateSize():void
Marks a component so that its measure()
method gets called during a later screen update. | UIComponent | |
| invalidateSkinState():void
Marks the component so that the new state of the skin is set
during a later screen update. | SkinnableComponent | |
| itemToLabel(item:Object):String [override]
Given a data item, return the correct text a renderer
should display while taking the labelField
and labelFunction properties into account. | ListBase | |
| localToContent(point:Point):Point
Converts a Point object from local to content coordinates. | UIComponent | |
| matchesCSSState(cssState:String):Boolean
Returns true if cssState matches currentCSSState. | UIComponent | |
| matchesCSSType(cssType:String):Boolean
Determines whether this instance is the same as, or is a subclass of,
the given type. | UIComponent | |
| measureHTMLText(htmlText:String):TextLineMetrics
Measures the specified HTML text, which can contain HTML tags such
as <font> and <b>,
assuming that it is displayed
in a single-line UITextField using a UITextFormat
determined by the styles of this UIComponent. | UIComponent | |
| measureText(text:String):TextLineMetrics
Measures the specified text, assuming that it is displayed
in a single-line UITextField (or UIFTETextField) using a UITextFormat
determined by the styles of this UIComponent. | UIComponent | |
| move(x:Number, y:Number):void
Moves the component to a specified position within its parent. | UIComponent | |
| moveIndexFindRow(field:String, value:String, startingIndex:int = 0, patternType:String):Boolean
This will search through a dataprovider checking the given field and will set the selectedIndex to a matching value. | ListBase | |
| moveIndexFirstRow():void
Changes the selectedIndex to the first row of the dataProvider. | ListBase | |
| moveIndexLastRow():void
Changes the selectedIndex to the last row of the dataProvider. | ListBase | |
| moveIndexNextRow():void
Changes the selectedIndex to the next row of the dataProvider. | ListBase | |
| moveIndexPreviousRow():void
Changes the selectedIndex to the previous row of the dataProvider. | ListBase | |
| notifyStyleChangeInChildren(styleProp:String, recursive:Boolean):void
Propagates style changes to the children. | UIComponent | |
openDropDown():void
Open the drop-down list and dispatch
a DropdownEvent.OPEN event. | DropDownListBase | ||
| owns(child:DisplayObject):Boolean
Returns true if the chain of owner properties
points from child to this UIComponent. | UIComponent | |
| parentChanged(p:DisplayObjectContainer):void
Called by Flex when a UIComponent object is added to or removed from a parent. | UIComponent | |
| prepareToPrint(target:IFlexDisplayObject):Object
Prepares an IFlexDisplayObject for printing. | UIComponent | |
| regenerateStyleCache(recursive:Boolean):void
Builds or rebuilds the CSS style cache for this component
and, if the recursive parameter is true,
for all descendants of this component as well. | UIComponent | |
| registerEffects(effects:Array):void
For each effect event, registers the EffectManager
as one of the event listeners. | UIComponent | |
| removeStyleClient(styleClient:IAdvancedStyleClient):void
Removes a non-visual style client from this component instance. | UIComponent | |
| replayAutomatableEvent(event:Event):Boolean
Replays the specified event. | UIComponent | |
| resolveAutomationIDPart(criteria:Object):Array
Resolves a child by using the id provided. | UIComponent | |
| resumeBackgroundProcessing():void [static]
Resumes the background processing of methods
queued by callLater(), after a call to
suspendBackgroundProcessing(). | UIComponent | |
| setActualSize(w:Number, h:Number):void
Sizes the object. | UIComponent | |
| setConstraintValue(constraintName:String, value:*):void
Sets a layout constraint value, which is the same as
setting the constraint style for this component. | UIComponent | |
| setCurrentState(stateName:String, playTransition:Boolean = true):void
Set the current state. | UIComponent | |
| setFocus():void
Sets the focus to this component. | UIComponent | |
| setLayoutBoundsPosition(x:Number, y:Number, postLayoutTransform:Boolean = true):void
Sets the coordinates that the element uses to draw on screen. | UIComponent | |
| setLayoutBoundsSize(width:Number, height:Number, postLayoutTransform:Boolean = true):void
Sets the layout size of the element. | UIComponent | |
| setLayoutMatrix(value:Matrix, invalidateLayout:Boolean):void
Sets the transform Matrix that is used to calculate the component's layout
size and position relative to its siblings. | UIComponent | |
| setLayoutMatrix3D(value:Matrix3D, invalidateLayout:Boolean):void
Sets the transform Matrix3D that is used to calculate the component's layout
size and position relative to its siblings. | UIComponent | |
| setMXMLDescriptor(value:Array):void | UIComponent | |
| setMXMLProperties(value:Array):void | UIComponent | |
| setSelectedIndex(rowIndex:int, dispatchChangeEvent:Boolean = false, changeCaret:Boolean = true):void
The rowIndex is the index in the data provider
of the item containing the selected cell.
| ListBase | |
| setStyle(styleProp:String, newValue:*):void
Sets a style property on this component instance. | UIComponent | |
| setVisible(value:Boolean, noEvent:Boolean = false):void
Called when the visible property changes. | UIComponent | |
| styleChanged(styleProp:String):void
Detects changes to style properties. | UIComponent | |
| stylesInitialized():void
Flex calls the stylesInitialized() method when
the styles for a component are first initialized. | UIComponent | |
| suspendBackgroundProcessing():void [static]
Blocks the background processing of methods
queued by callLater(),
until resumeBackgroundProcessing() is called. | UIComponent | |
| toString():String [override]
Returns a string indicating the location of this object
within the hierarchy of DisplayObjects in the Application. | FlexSprite | |
| transformAround(transformCenter:Vector3D, scale:Vector3D = null, rotation:Vector3D = null, translation:Vector3D = null, postLayoutScale:Vector3D = null, postLayoutRotation:Vector3D = null, postLayoutTranslation:Vector3D = null, invalidateLayout:Boolean = true):void
A utility method to update the rotation, scale, and translation of the
transform while keeping a particular point, specified in the component's
own coordinate space, fixed in the parent's coordinate space. | UIComponent | |
| transformPointToParent(localPosition:Vector3D, position:Vector3D, postLayoutPosition:Vector3D):void
A utility method to transform a point specified in the local
coordinates of this object to its location in the object's parent's
coordinates. | UIComponent | |
| updateRenderer(renderer:IVisualElement, itemIndex:int, data:Object):void
Updates an item renderer for use or reuse. | SkinnableDataContainer | |
| validateDisplayList():void
Validates the position and size of children and draws other
visuals. | UIComponent | |
| validateNow():void
Validate and update the properties and layout of this object
and redraw it, if necessary. | UIComponent | |
| validateProperties():void
Used by layout logic to validate the properties of a component
by calling the commitProperties() method. | UIComponent | |
| validateSize(recursive:Boolean = false):void
Validates the measured size of the component
If the LayoutManager.invalidateSize() method is called with
this ILayoutManagerClient, then the validateSize() method
is called when it's time to do measurements. | UIComponent | |
| validationResultHandler(event:ValidationResultEvent):void
Handles both the valid and invalid events from a
validator assigned to this component. | UIComponent | |
| verticalGradientMatrix(x:Number, y:Number, width:Number, height:Number):Matrix
Returns a box Matrix which can be passed to drawRoundRect()
as the rot parameter when drawing a vertical gradient. | UIComponent | |
| Event | Summary | Defined By | ||
|---|---|---|---|---|
| Dispatched when the component is added to a container as a content child by using the addChild(), addChildAt(), addElement(), or addElementAt() method. | UIComponent | ||
| Dispatched after the focus has changed. | ListBase | ||
| Dispatched after the selection has changed. | ListBase | ||
| Dispatched when the selection is going to change. | ListBase | ||
| Dispatched when the drop-down list closes for any reason, such when the user: Selects an item in the drop-down list. Clicks outside of the drop-down list. Clicks the anchor button while the drop-down list is displayed. | DropDownListBase | |||
| Dispatched when the component has finished its construction, property processing, measuring, layout, and drawing. | UIComponent | ||
| Dispatched after the view state has changed. | UIComponent | ||
| Dispatched after the currentState property changes, but before the view state changes. | UIComponent | ||
| Dispatched by the drag initiator (the component that is the source of the data being dragged) when the drag operation completes, either when you drop the dragged data onto a drop target or when you end the drag-and-drop operation without performing a drop. | UIComponent | ||
| Dispatched by the drop target when the user releases the mouse over it. | UIComponent | ||
| Dispatched by a component when the user moves the mouse over the component during a drag operation. | UIComponent | ||
| Dispatched by the component when the user drags outside the component, but does not drop the data onto the target. | UIComponent | ||
| Dispatched by a component when the user moves the mouse while over the component during a drag operation. | UIComponent | ||
| Dispatched by the drag initiator when starting a drag operation. | UIComponent | ||
| Dispatched after an effect ends. | UIComponent | ||
| Dispatched just before an effect starts. | UIComponent | ||
| Dispatched after an effect is stopped, which happens only by a call to stop() on the effect. | UIComponent | ||
| Dispatched after the component has entered a view state. | UIComponent | ||
| Dispatched just before the component exits a view state. | UIComponent | ||
| Dispatched when an object's state changes from visible to invisible. | UIComponent | ||
| Dispatched when the component has finished its construction and has all initialization properties set. | UIComponent | ||
| Dispatched when a component is monitored by a Validator and the validation failed. | UIComponent | ||
| Dispatched when the user rolls the mouse pointer out of an item in the control. | ListBase | ||
| Dispatched when the user rolls the mouse pointer over an item in the control. | ListBase | ||
| Dispatched from a component opened using the PopUpManager when the user clicks outside it. | UIComponent | ||
| Dispatched from a component opened using the PopUpManager when the user scrolls the mouse wheel outside it. | UIComponent | ||
| Dispatched when the object has moved. | UIComponent | ||
| Dispatched when the user clicks the anchor button to display the drop-down list. | DropDownListBase | |||
| Dispatched at the beginning of the component initialization sequence. | UIComponent | ||
| Dispatched when the component is removed from a container as a content child by using the removeChild(), removeChildAt(), removeElement(), or removeElementAt() method. | UIComponent | ||
| Dispatched when a renderer is added to the container. | SkinnableDataContainer | ||
| Dispatched when a renderer is removed from the container. | SkinnableDataContainer | ||
| Dispatched when the component is resized. | UIComponent | ||
| Dispatched when an object's state changes from invisible to visible. | UIComponent | ||
| Dispatched after the component has entered a new state and any state transition animation to that state has finished playing. | UIComponent | ||
| Dispatched when a component interrupts a transition to its current state in order to switch to a new state. | UIComponent | ||
| Dispatched by the component when it is time to create a ToolTip. | UIComponent | ||
| Dispatched by the component when its ToolTip has been hidden and is to be discarded soon. | UIComponent | ||
| Dispatched by the component when its ToolTip is about to be hidden. | UIComponent | ||
| Dispatched by the component when its ToolTip is about to be shown. | UIComponent | ||
| Dispatched by the component when its ToolTip has been shown. | UIComponent | ||
| Dispatched by a component whose toolTip property is set, as soon as the user moves the mouse over it. | UIComponent | ||
| A non-cancellable event, dispatched by a component when it is done responding to a touch interaction user gesture. | UIComponent | ||
| A non-cancellable event, dispatched by a component when it starts responding to a touch interaction user gesture. | UIComponent | ||
| A cancellable event, dispatched by a component in an attempt to respond to a touch interaction user gesture. | UIComponent | ||
| Dispatched when an object has had its commitProperties(), measure(), and updateDisplayList() methods called (if needed). | UIComponent | ||
| Dispatched when a component is monitored by a Validator and the validation succeeded. | UIComponent | ||
| Dispatched when values are changed programmatically or by user interaction. | UIComponent | ||
| Style | Description | Defined By | ||
|---|---|---|---|---|
| Type: String CSS Inheritance: yes Specifies the baseline to which the dominant baseline aligns. See also | SkinnableDataContainer | ||
| Type: Array Format: Color CSS Inheritance: yes Theme: spark, mobile The colors to use for the backgrounds of the items in the list. | List | ||
| Type: String CSS Inheritance: no The vertical distance in pixels from the top edge of the content area to the control's baseline position. | UIComponent | ||
| Type: Object CSS Inheritance: yes Amount to shift the baseline. See also | SkinnableDataContainer | ||
| Type: Number CSS Inheritance: no Theme: spark, mobile The alpha of the border for this component. | List | ||
| Type: uint Format: Color CSS Inheritance: no Theme: spark, mobile The color of the border for this component. | List | ||
| Type: Boolean CSS Inheritance: no Theme: spark, mobile Controls the visibility of the border for this component. | List | ||
| Type: String CSS Inheritance: no The vertical distance, in pixels, from the bottom edge of the component to the bottom edge of its parent container's content area. | UIComponent | ||
| Type: String CSS Inheritance: yes The type of CFF hinting used for this text. See also | SkinnableDataContainer | ||
| Type: uint Format: Color CSS Inheritance: yes Theme: spark, mobile The main color for a component. | SkinnableComponent | ||
| Type: uint Format: Color CSS Inheritance: yes Color of the text. See also | SkinnableDataContainer | ||
| Type: Number CSS Inheritance: yes Theme: spark, mobile The alpha of the content background for this component. | List | ||
| Type: uint Format: Color CSS Inheritance: yes Theme: spark, mobile The color of the content background for this component. | List | ||
cornerRadius | Type: Number Format: Length CSS Inheritance: no Theme: spark The radius of the corners for this component. The default value is 4. | DropDownListBase | ||
| Type: String CSS Inheritance: yes The type of digit case used for this text. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes Type of digit width used for this text. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes Specifies the default bidirectional embedding level of the text. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes Specifies which element baseline snaps to the alignmentBaseline to determine the vertical position of the element on the line.See also | SkinnableDataContainer | ||
| Type: uint Format: Color CSS Inheritance: yes Theme: mobile Color of the background of an item renderer when it is being pressed down If The default value for the Spark theme is | List | ||
| Type: Class CSS Inheritance: no The class to create instance of for the drag indicator during drag and drop operations initiated by the List. | List | ||
| Type: Class CSS Inheritance: no If a dropIndicator skin part is not specified in the List skin, then an instance of this class is created and used for the default drop indicator during drag and drop operations where the List is a potential drop target. | List | ||
dropShadowVisible | Type: Boolean CSS Inheritance: no Theme: spark Controls the visibility of the drop shadow for this component. The default value is true. | DropDownListBase | ||
| Type: uint Format: Color CSS Inheritance: yes Color of the component highlight when validation fails. | UIComponent | ||
| Type: Class Name of the skin class to use for this component when a validation error occurs. | SkinnableComponent | ||
| Type: Number CSS Inheritance: no Theme: spark, mobile The alpha of the focus ring for this component. | SkinnableDataContainer | ||
| Type: uint Format: Color CSS Inheritance: yes Theme: spark, mobile Color of focus ring when the component is in focus. | SkinnableDataContainer | ||
| Type: Class CSS Inheritance: no Skin used to draw the focus rectangle. | UIComponent | ||
| Type: String CSS Inheritance: yes The name of the font to use, or a comma-separated list of font names. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes Font lookup to use. See also | SkinnableDataContainer | ||
| Type: Number Format: Length CSS Inheritance: yes Height of the text, in pixels. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes Determines whether the text is italic font. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes Determines whether the text is boldface. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: no The horizontal distance in pixels from the center of the component's content area to the center of the component. | UIComponent | ||
| Type: String CSS Inheritance: no Indicates under what conditions the horizontal scroll bar is displayed. See also | List | ||
| Type: String CSS Inheritance: yes The primary interaction mode for this component. See also | UIComponent | ||
| Type: String CSS Inheritance: yes Rule used to justify text in a paragraph. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes The style used for justification of the paragraph. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes The style used for justification of the paragraph. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes Specifies the desired layout direction of a component. See also | UIComponent | ||
| Type: Number Format: Length CSS Inheritance: yes Theme: mobile Additional vertical space between lines of text. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: no The horizontal distance, in pixels, from the left edge of the component to the left edge of its parent container's content area. | UIComponent | ||
| Type: Number CSS Inheritance: yes Theme: mobile The number of additional pixels to appear between each character. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes Controls which of the ligatures that are defined in the font may be used in the text. See also | SkinnableDataContainer | ||
| Type: Object CSS Inheritance: yes Leading controls for the text. See also | SkinnableDataContainer | ||
| Type: Boolean CSS Inheritance: yes If true, applies strikethrough, a line drawn through the middle of the text. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes The locale of the text. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes The rendering mode used for this text which applies only to embedded fonts. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: no The horizontal distance, in pixels, from the right edge of the component to the right edge of its parent container's content area. | UIComponent | ||
| Type: uint Format: Color CSS Inheritance: yes Theme: spark Color of the highlights when the mouse is over the component. | List | ||
| Type: uint Format: Color CSS Inheritance: yes Theme: spark, mobile The color of the background of a renderer when the user selects it. | List | ||
| Type: Boolean CSS Inheritance: yes Show the error border or skin when this component is invalid. | UIComponent | ||
| Type: Boolean CSS Inheritance: yes Show the error tip when this component is invalid and the user rolls over it. | UIComponent | ||
| Type: Class Name of the skin class to use for this component. | SkinnableComponent | ||
| Type: uint Format: Color CSS Inheritance: yes Theme: spark, mobile Color of any symbol of a component. | List | ||
| Type: String CSS Inheritance: yes Alignment of text within a container. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes Alignment of the last line in the paragraph relative to the container in justified text. See also | SkinnableDataContainer | ||
| Type: Number CSS Inheritance: yes Alpha (transparency) value for the text. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes Determines whether the text is underlined. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes Specifies options for justifying text. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: no The vertical distance, in pixels, from the top edge of the component to the top edge of its parent container's content area. | UIComponent | ||
| Type: Number Format: Time CSS Inheritance: yes When in touch interaction mode, the number of milliseconds to wait after the user interaction has occured before showing the component in a visually down state. | List | ||
| Type: Object CSS Inheritance: yes The amount of tracking (manual kerning) to be applied to the left of each character. See also | SkinnableDataContainer | ||
| Type: Object CSS Inheritance: yes The amount of tracking (manual kerning) to be applied to the right of each character. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: yes The type of typographic case used for this text. See also | SkinnableDataContainer | ||
| Type: String CSS Inheritance: no The vertical distance in pixels from the center of the component's content area to the center of the component. | UIComponent | ||
| Type: String CSS Inheritance: no Indicates under what conditions the vertical scroll bar is displayed. See also | List | ||
This component uses skins made up of skin parts. Do not set the skin parts directly. The component's skin sets the skin parts.
| Skin Part | Description | Defined By | ||
|---|---|---|---|---|
| Required: false Part Type: Static An optional skin part that defines the DataGroup in the skin class where data items get pushed into, rendered, and laid out. | SkinnableDataContainer | ||
dropDown:flash.display.DisplayObject | Required: false Part Type: Static A skin part that defines the drop-down list area. When the DropDownListBase is open, clicking anywhere outside of the dropDown skin part closes the drop-down list. | DropDownListBase | ||
| Required: false Part Type: Dynamic A skin part that defines the appearance of the drop indicator. The drop indicator is resized and positioned by the layout to outline the insert location when dragging over the List. By default, the drop indicator for a Spark control is a solid line that spans the width of the control. Create a custom drop indicator by creating a custom skin class for the drop target. In your skin class, create a skin part named dropIndicator, in the The IFactory must return an object of type DisplayObject | List | ||
openButton:ButtonBase | Required: true Part Type: Static A skin part that defines the anchor button. | DropDownListBase | ||
| Required: false Part Type: Static The optional Scroller used to scroll the List. | List | ||
To skin the component, implement a skin that defines the following states. Although you must implement all skin states, a skin state can be empty. An empty skin state specifies no changes to the default skin state.
| Skin State | Description | Defined By | ||
|---|---|---|---|---|
| Disabled State | SkinnableContainerBase | ||
| Normal State | SkinnableContainerBase | ||
open | Skin state for the open state of the DropDownListBase control. | DropDownListBase | ||
| closeDropDownOnResize | property |
closeDropDownOnResize:Boolean| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 4.12 |
| Runtime Versions : | Flash Player 10, AIR 1.5 |
When true, resizing the system manager
closes the drop down.
For mobile applications, this property is set
to false so that the drop down stays open when the
page orientation changes.
The default value is true.
public function get closeDropDownOnResize():Boolean public function set closeDropDownOnResize(value:Boolean):void| dropDownController | property |
dropDownController:DropDownController| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 4 |
| Runtime Versions : | Flash Player 10, AIR 1.5 |
Instance of the DropDownController class that handles all of the mouse, keyboard
and focus user interactions.
Flex calls the initializeDropDownController() method after
the DropDownController instance is created in the constructor.
protected function get dropDownController():DropDownController protected function set dropDownController(value:DropDownController):void| isDropDownOpen | property |
isDropDownOpen: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.
public function get isDropDownOpen():Boolean| DropDownListBase | () | Constructor |
public function DropDownListBase()| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 4 |
| Runtime Versions : | Flash Player 10, AIR 1.5 |
Constructor.
| 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 list 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 list and dispatch
a DropdownEvent.OPEN event.
| close | Event |
spark.events.DropDownEventspark.events.DropDownEvent.CLOSE| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 4 |
| Runtime Versions : | Flash Player 10, AIR 1.5 |
Dispatched when the drop-down list closes for any reason, such when the user:
DropDownEvent.CLOSE constant defines the value of the
type property of the event object for a close event.
The properties of the event object have the following values:
| Property | Value |
|---|---|
bubbles | false |
cancelable | false |
currentTarget | The Object that defines the
event listener that handles the event. For example, if you use
myButton.addEventListener() to register an event listener,
myButton is the value of the currentTarget. |
target | The Object that dispatched the event;
it is not always the Object listening for the event.
Use the currentTarget property to always access the
Object listening for the event. |
triggerEvent | A value indicating the type of input action that triggered the event. |
| open | Event |
spark.events.DropDownEventspark.events.DropDownEvent.OPEN| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 4 |
| Runtime Versions : | Flash Player 10, AIR 1.5 |
Dispatched when the user clicks the anchor button to display the drop-down list. It is also dispatched if the user uses Control-Down to open the dropDown.
TheDropDownEvent.OPEN constant defines the value of the
type property of the event object for a open event.
The properties of the event object have the following values:
| Property | Value |
|---|---|
bubbles | false |
cancelable | false |
currentTarget | The Object that defines the
event listener that handles the event. For example, if you use
myButton.addEventListener() to register an event listener,
myButton is the value of the currentTarget. |
target | The Object that dispatched the event;
it is not always the Object listening for the event.
Use the currentTarget property to always access the
Object listening for the event. |
triggerEvent | A value indicating the type of input action that triggered the event. |