| Package | spark.components |
| Class | public class ComboBox |
| Inheritance | ComboBox  DropDownListBase List ListBase SkinnableDataContainer SkinnableContainerBase SkinnableComponent UIComponent FlexSprite Sprite DisplayObjectContainer InteractiveObject DisplayObject EventDispatcher Object |
| Implements | IIMESupport |
| Subclasses | AXMComboBox |
| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
 | Because this component does not define a skin for the mobile theme, Adobe recommends that you not use it in a mobile application. Alternatively, you can define your own mobile skin for the component. For more information, see Basics of mobile skinning. |
The ComboBox control is a child class of the DropDownListBase control. Like the DropDownListBase control, when the user selects an item from the drop-down list in the ComboBox control, the data item appears in the prompt area of the control.
One difference between the controls is that the prompt area of the ComboBox control is implemented by using the TextInput control, instead of the Label control for the DropDownList control. Therefore, a user can edit the prompt area of the control to enter a value that is not one of the predefined options.
For example, the DropDownList control only lets the user select
from a list of predefined items in the control.
The ComboBox control lets the user either select a predefined item,
or enter a new item into the prompt area.
When the user enters a new item, the selectedIndex property
is set to -3.
Your application can recognize that a new item has been entered and,
optionally, add it to the list of items in the control.
The ComboBox control also searches the item list as the user enters characters into the prompt area. As the user enters characters, the drop-down area of the control opens. It then and scrolls to and highlights the closest match in the item list.
To use this component in a list-based component, such as a List or DataGrid, create an item renderer. For information about creating an item renderer, see Custom Spark item renderers.
Note: The Spark list-based controls (the Spark ListBase class and its subclasses
such as ButtonBar, ComboBox, DropDownList, List, and TabBar) do not support the BasicLayout class
as the value of the layout property.
Do not use BasicLayout with the Spark list-based controls.
The ComboBox control has the following default characteristics:
| Characteristic | Description |
|---|---|
| Default size | 146 pixels wide by 23 pixels high |
| Minimum size | 20 pixels wide by 23 pixels high |
| Maximum size | 10000 pixels wide and 10000 pixels high |
| Default skin class | spark.skins.spark.ComboBoxSkin
spark.skins.spark.ComboBoxTextInputSkin |
Show MXML Syntax
Hide MXML SyntaxThe <s:ComboBox> tag inherits all of the tag
attributes of its superclass and adds the following tag attributes:
<s:ComboBox
Properties
itemMatchingFunction="null"
labelToItemFunction="null"
maxChars="0"
openOnInput="true"
prompt="null"
restrict=""
Styles
paddingBottom="3"
paddingLeft="3"
paddingRight="3"
paddingTop="5"
/>
Default MXML PropertydataProvider
More examples
Create a Spark ComboBox control
Handle events for the Spark ComboBox control
Process new data items entered into the Spark ComboBox control
Use prompt text with the Spark ComboBox control
Handle events for the Spark ComboBox control
Process new data items entered into the Spark ComboBox control
Use prompt text with the Spark ComboBox control
Learn more
Define a custom Spark item renderer
Differences between mobile and desktop item renderers
Working with item renderers
Using Spark list-based controls
Defining the children of a list-based control
Controlling the text displayed for each data item
Modifying the children of a list-based control
Setting the layout
Working with list events
Working with the selected item
Working with the caret item
Working with item renderers
Using a mobile item renderer with a Spark list-based control
Spark ComboBox control
Spark ComboBox control user interaction
Differences between mobile and desktop item renderers
Working with item renderers
Using Spark list-based controls
Defining the children of a list-based control
Controlling the text displayed for each data item
Modifying the children of a list-based control
Setting the layout
Working with list events
Working with the selected item
Working with the caret item
Working with item renderers
Using a mobile item renderer with a Spark list-based control
Spark ComboBox control
Spark ComboBox control user interaction
Related API Elements
Public Properties
| 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 | |
| accessibilityImplementation : AccessibilityImplementation
The current accessibility implementation (AccessibilityImplementation)
for this InteractiveObject instance. | InteractiveObject | |
| accessibilityName : String
A convenience accessor for the name property
in this UIComponent's accessibilityProperties object. | UIComponent | |
| accessibilityProperties : AccessibilityProperties
The current accessibility options for this display object. | DisplayObject | |
| 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 | |
| alpha : Number
Indicates the alpha transparency value of the object specified. | DisplayObject | |
| 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 | |
| blendMode : String
A value from the BlendMode class that specifies which blend mode to use. | DisplayObject | |
| blendShader : Shader [write-only]
Sets a shader that is used for blending the foreground and background. | DisplayObject | |
| bottom : Object
For components, this layout constraint property is a
facade on top of the similarly-named style. | UIComponent | |
| buttonMode : Boolean
Specifies the button mode of this sprite. | Sprite | |
| cacheAsBitmap : Boolean
If set to true, Flash runtimes cache an internal bitmap representation of the
display object. | DisplayObject | |
| cacheAsBitmapMatrix : Matrix
If non-null, this Matrix object defines how a display object is rendered when
cacheAsBitmap is set to true. | DisplayObject | |
| 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 | |
| constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
| 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 | |
| contextMenu : NativeMenu
Specifies the context menu associated with this object. | InteractiveObject | |
| 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 | |
| dropTarget : DisplayObject [read-only]
Specifies the display object over which the sprite is being dragged, or on
which the sprite was dropped. | Sprite | |
| enabled : Boolean
Whether the component can accept user interaction. | UIComponent | |
| enableIME : Boolean [read-only] | ComboBox | ||
| 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 | |
| filters : Array
An indexed array that contains each filter object currently associated with the display object. | DisplayObject | |
| 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 | |
| focusRect : Object
Specifies whether this object displays a focus rectangle. | InteractiveObject | |
| graphics : Graphics [read-only]
Specifies the Graphics object that belongs to this sprite where vector
drawing commands can occur. | Sprite | |
| 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 | |
| hitArea : Sprite
Designates another sprite to serve as the hit area for a sprite. | Sprite | |
| 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 | |
| imeMode : String | ComboBox | ||
| 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 | |
| isPopUp : Boolean
Set to true by the PopUpManager to indicate
that component has been popped up. | UIComponent | |
| itemMatchingFunction : Function = null
Specifies a callback function used to search the item list as the user
enters characters into the prompt area. | ComboBox | ||
| 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 | |
| labelToItemFunction : Function
Specifies a callback function to convert a new value entered
into the prompt area to the same data type as the data items in the data provider. | ComboBox | ||
| 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 | |
| loaderInfo : LoaderInfo [read-only]
Returns a LoaderInfo object containing information about loading the file
to which this display object belongs. | DisplayObject | |
| maintainProjectionCenter : Boolean
When true, the component keeps its projection matrix centered on the
middle of its bounding box. | UIComponent | |
| mask : DisplayObject
The calling display object is masked by the specified mask object. | DisplayObject | |
| maxChars : int
The maximum number of characters that the prompt area can contain, as entered by a user. | ComboBox | ||
| 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 | |
| metaData : Object
Obtains the meta data object of the DisplayObject instance if meta data was stored alongside the
the instance of this DisplayObject in the SWF file through a PlaceObject4 tag. | DisplayObject | |
| 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 | |
| mouseChildren : Boolean
Determines whether or not the children of the object are mouse, or user input device, enabled. | DisplayObjectContainer | |
| mouseEnabled : Boolean
Specifies whether this object receives mouse, or other user input, messages. | InteractiveObject | |
| mouseFocusEnabled : Boolean
Whether you can receive focus when clicked on. | UIComponent | |
| mouseX : Number [read-only]
Indicates the x coordinate of the mouse or user input device position, in pixels. | DisplayObject | |
| mouseY : Number [read-only]
Indicates the y coordinate of the mouse or user input device position, in pixels. | DisplayObject | |
| name : String
Indicates the instance name of the DisplayObject. | DisplayObject | |
| needsSoftKeyboard : Boolean
Specifies whether a virtual keyboard (an on-screen, software keyboard) should display
when this InteractiveObject instance receives focus. | InteractiveObject | |
| 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 | |
| opaqueBackground : Object
Specifies whether the display object is opaque with a certain background color. | DisplayObject | |
| openOnInput : Boolean = true
If true, the drop-down list opens when the user edits the prompt area. | ComboBox | ||
| 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 : mx.geom: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 | |
| processedDescriptors : Boolean
Set to true after immediate or deferred child creation,
depending on which one happens. | UIComponent | |
| prompt : String
Text to be displayed if/when the input text is null. | ComboBox | ||
| 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 | |
| restrict : String
Specifies the set of characters that a user can enter into the prompt area. | ComboBox | ||
| right : Object
For components, this layout constraint property is a
facade on top of the similarly-named style. | UIComponent | |
| root : DisplayObject [read-only]
For a display object in a loaded SWF file, the root property is the
top-most display object in the portion of the display list's tree structure represented by that SWF file. | DisplayObject | |
| rotation : Number [override]
Indicates the rotation of the DisplayObject instance, in degrees, from its original orientation. | 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]
Indicates the z-axis rotation of the DisplayObject instance, in degrees, from its original orientation relative to the 3D parent container. | UIComponent | |
| scale9Grid : Rectangle
The current scaling grid that is in effect. | DisplayObject | |
| 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 | |
| scrollRect : Rectangle
The scroll rectangle bounds of the display object. | DisplayObject | |
| 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 | |
| softKeyboard : String
Controls the appearance of the soft keyboard. | InteractiveObject | |
| softKeyboardInputAreaOfInterest : Rectangle
Defines the area that should remain on-screen when a soft keyboard is displayed (not available on iOS). | InteractiveObject | |
| soundTransform : flash.media:SoundTransform
Controls sound within this sprite. | Sprite | |
| stage : Stage [read-only]
The Stage of the display object. | DisplayObject | |
| 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 | |
| tabChildren : Boolean
Determines whether the children of the object are tab enabled. | DisplayObjectContainer | |
| tabEnabled : Boolean
Specifies whether this object is in the tab order. | InteractiveObject | |
| 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 | |
| tabIndex : int
Specifies the tab ordering of objects in a SWF file. | InteractiveObject | |
| textSnapshot : flash.text:TextSnapshot [read-only]
Returns a TextSnapshot object for this DisplayObjectContainer instance. | DisplayObjectContainer | |
| 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 : flash.geom: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 | |
| useHandCursor : Boolean
A Boolean value that indicates whether the pointing hand (hand cursor) appears when the pointer rolls
over a sprite in which the buttonMode property is set to true. | Sprite | |
| 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]
Indicates the z coordinate position along the z-axis of the DisplayObject
instance relative to the 3D parent container. | UIComponent | |
Protected Properties
Public Methods
| Method | Defined By | ||
|---|---|---|---|
ComboBox()
Constructor. | ComboBox | ||
|
Adds the selected items to the DragSource object as part of
a drag-and-drop operation. | List | |
| 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. | EventDispatcher | |
|
Adds a non-visual style client to this component instance. | UIComponent | |
|
Indicates whether the security restrictions
would cause any display objects to be omitted from the list returned by calling
the DisplayObjectContainer.getObjectsUnderPoint() method
with the specified point point. | DisplayObjectContainer | |
|
Queues a function to be called later. | UIComponent | |
|
Deletes a style property from this component instance. | UIComponent | |
|
Close the drop-down list and dispatch a DropDownEvent.CLOSE event. | DropDownListBase | |
|
Determines whether the specified display object is a child of the DisplayObjectContainer instance or
the instance itself. | DisplayObjectContainer | |
|
Converts a Point object from content coordinates to global coordinates. | UIComponent | |
|
Converts a Point object from content to local coordinates. | UIComponent | |
|
Returns a set of properties that identify the child within
this container. | UIComponent | |
|
Returns a set of properties 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 | |
|
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 | |
|
Creates an id reference to this IUIComponent object
on its parent document object. | UIComponent | |
|
Deletes the id reference to this IUIComponent object
on its parent document object. | UIComponent | |
|
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 | |
| [override]
Dispatches an event into the event flow. | UIComponent | |
|
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 | |
|
Called by the effect instance when it stops playing on the component. | UIComponent | |
|
Called by the effect instance when it starts playing on the component. | UIComponent | |
|
Ends all currently playing effects on the component. | UIComponent | |
|
A convenience method that handles scrolling a data item
into view. | List | |
|
Executes all the bindings for which the UIComponent object is the destination. | UIComponent | |
|
Called after printing is complete. | UIComponent | |
|
Provides the automation object at the specified index. | UIComponent | |
|
Provides the automation object list . | UIComponent | |
|
Returns a rectangle that defines the area of the display object relative to the coordinate system
of the targetCoordinateSpace object. | DisplayObject | |
|
Returns the x coordinate of the element's bounds at the specified element size. | UIComponent | |
|
Returns the y coordinate of the element's bounds at the specified element size. | UIComponent | |
|
Returns the child display object that exists with the specified name. | DisplayObjectContainer | |
|
Finds the type selectors for this UIComponent instance. | UIComponent | |
|
Returns a layout constraint value, which is the same as
getting the constraint style for this component. | UIComponent | |
|
A convenience method for determining whether to use the
explicit or measured height
| UIComponent | |
|
A convenience method for determining whether to use the
explicit or measured width
| UIComponent | |
|
Gets the object that currently has focus. | UIComponent | |
|
Returns the element's layout height. | UIComponent | |
|
Returns the element's layout width. | UIComponent | |
|
Returns the x coordinate that the element uses to draw on screen. | UIComponent | |
|
Returns the y coordinate that the element uses to draw on screen. | UIComponent | |
|
Returns the transform matrix that is used to calculate the component's
layout relative to its siblings. | UIComponent | |
|
Returns the layout transform Matrix3D for this element. | UIComponent | |
|
Returns the element's maximum height. | UIComponent | |
|
Returns the element's maximum width. | UIComponent | |
|
Returns the element's minimum height. | UIComponent | |
|
Returns the element's minimum width. | UIComponent | |
|
Returns an array of objects that lie under the specified point and are children
(or grandchildren, and so on) of this DisplayObjectContainer instance. | DisplayObjectContainer | |
|
Returns the element's preferred height. | UIComponent | |
|
Returns the element's preferred width. | UIComponent | |
|
Returns a rectangle that defines the boundary of the display object,
based on the coordinate system defined by the targetCoordinateSpace
parameter, excluding any strokes on shapes. | DisplayObject | |
|
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 | |
|
Gets a style property that has been set anywhere in this
component's style lookup chain. | UIComponent | |
|
Converts a Point object from global to content coordinates. | UIComponent | |
|
Converts the point object from the Stage (global) coordinates
to the display object's (local) coordinates. | DisplayObject | |
|
Converts a two-dimensional point from the Stage (global) coordinates to a
three-dimensional display object's (local) coordinates. | DisplayObject | |
|
Returns true if currentCSSState is not null. | UIComponent | |
|
Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | EventDispatcher | |
|
Indicates whether an object has a specified property defined. | Object | |
|
Determines whether the specified state has been defined on this
UIComponent. | UIComponent | |
|
Evaluates the bounding box of the display object to see if it overlaps or intersects with the
bounding box of the obj display object. | DisplayObject | |
|
Evaluates the display object to see if it overlaps or intersects with the
point specified by the x and y parameters. | DisplayObject | |
|
Returns a box Matrix which can be passed to the
drawRoundRect() method
as the rot parameter when drawing a horizontal gradient. | UIComponent | |
|
Initializes the internal structure of this component. | UIComponent | |
|
Initializes various properties which keep track of repeated instances
of this component. | UIComponent | |
|
Marks a component so that its updateDisplayList()
method gets called during a later screen update. | UIComponent | |
|
Called by a component's items to indicate that their depth
property has changed. | UIComponent | |
|
An element must call this method when its layoutDirection changes or
when its parent's layoutDirection changes. | UIComponent | |
|
Marks a component so that its commitProperties()
method gets called during a later screen update. | UIComponent | |
|
Marks a component so that its measure()
method gets called during a later screen update. | UIComponent | |
|
Marks the component so that the new state of the skin is set
during a later screen update. | SkinnableComponent | |
|
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
| [override]
Given a data item, return the correct text a renderer
should display while taking the labelField
and labelFunction properties into account. | ListBase | |
|
Converts a three-dimensional point of the three-dimensional display
object's (local) coordinates to a two-dimensional point in the Stage (global) coordinates. | DisplayObject | |
|
Converts a Point object from local to content coordinates. | UIComponent | |
|
Converts the point object from the display object's (local) coordinates to the
Stage (global) coordinates. | DisplayObject | |
|
Returns true if cssState matches currentCSSState. | UIComponent | |
|
Determines whether this instance is the same as, or is a subclass of,
the given type. | UIComponent | |
|
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 | |
|
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 | |
|
Moves the component to a specified position within its parent. | UIComponent | |
|
Propagates style changes to the children. | UIComponent | |
|
Open the drop-down list and dispatch
a DropdownEvent.OPEN event. | DropDownListBase | |
|
Returns true if the chain of owner properties
points from child to this UIComponent. | UIComponent | |
|
Called by Flex when a UIComponent object is added to or removed from a parent. | UIComponent | |
|
Prepares an IFlexDisplayObject for printing. | UIComponent | |
|
Indicates whether the specified property exists and is enumerable. | Object | |
|
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 | |
|
For each effect event, registers the EffectManager
as one of the event listeners. | UIComponent | |
|
Removes all child DisplayObject instances from the child list of the DisplayObjectContainer instance. | DisplayObjectContainer | |
|
Removes a listener from the EventDispatcher object. | EventDispatcher | |
|
Removes a non-visual style client from this component instance. | UIComponent | |
|
Replays the specified event. | UIComponent | |
|
Raises a virtual keyboard. | InteractiveObject | |
|
Resolves a child by using the id provided. | UIComponent | |
| [static]
Resumes the background processing of methods
queued by callLater(), after a call to
suspendBackgroundProcessing(). | UIComponent | |
|
Sizes the object. | UIComponent | |
|
Sets a layout constraint value, which is the same as
setting the constraint style for this component. | UIComponent | |
|
Set the current state. | UIComponent | |
|
Sets the focus to this component. | UIComponent | |
|
Sets the coordinates that the element uses to draw on screen. | UIComponent | |
|
Sets the layout size of the element. | UIComponent | |
|
Sets the transform Matrix that is used to calculate the component's layout
size and position relative to its siblings. | UIComponent | |
|
Sets the transform Matrix3D that is used to calculate the component's layout
size and position relative to its siblings. | UIComponent | |
|
Sets the availability of a dynamic property for loop operations. | Object | |
|
Sets a style property on this component instance. | UIComponent | |
|
Called when the visible property changes. | UIComponent | |
|
Lets the user drag the specified sprite. | Sprite | |
|
Lets the user drag the specified sprite on a touch-enabled device. | Sprite | |
|
Recursively stops the timeline execution of all MovieClips rooted at this object. | DisplayObjectContainer | |
|
Ends the startDrag() method. | Sprite | |
|
Ends the startTouchDrag() method, for use with touch-enabled devices. | Sprite | |
|
Detects changes to style properties. | UIComponent | |
|
Flex calls the stylesInitialized() method when
the styles for a component are first initialized. | UIComponent | |
| [static]
Blocks the background processing of methods
queued by callLater(),
until resumeBackgroundProcessing() is called. | UIComponent | |
|
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
| [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 | |
|
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 | |
|
Updates an item renderer for use or reuse. | SkinnableDataContainer | |
|
Validates the position and size of children and draws other
visuals. | UIComponent | |
|
Validate and update the properties and layout of this object
and redraw it, if necessary. | UIComponent | |
|
Used by layout logic to validate the properties of a component
by calling the commitProperties() method. | UIComponent | |
|
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 | |
|
Handles both the valid and invalid events from a
validator assigned to this component. | UIComponent | |
|
Returns the primitive value of the specified object. | Object | |
|
Returns a box Matrix which can be passed to drawRoundRect()
as the rot parameter when drawing a vertical gradient. | UIComponent | |
|
Checks whether an event listener is registered with this EventDispatcher object or any of
its ancestors for the specified event type. | EventDispatcher | |
Protected Methods
Styles
Styles are either common or associated with a specific theme. If the style is common, it can be used with any theme. If a style is associated with a specific theme, it can only be used if your application uses that theme.
Common Styles
| Style | Description | Defined By | ||
|---|---|---|---|---|
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Specifies the baseline to which the dominant baseline aligns. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 3 Runtime Versions: Flash9, AIR 1.1 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 Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Amount to shift the baseline. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 3 Runtime Versions: Flash9, AIR 1.1 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 Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 The type of CFF hinting used for this text. | SkinnableDataContainer | ||
| Type: uint Format: Color CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Color of the text. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 The type of digit case used for this text. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Type of digit width used for this text. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Specifies the default bidirectional embedding level of the text. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Specifies which element baseline snaps to the alignmentBaseline to determine the vertical position of the element on the line. | SkinnableDataContainer | ||
| Type: Class CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 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 Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 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 | ||
| Type: uint Format: Color CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 3 Runtime Versions: Flash9, AIR 1.1 Color of the component highlight when validation fails. | UIComponent | ||
| Type: Class Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Name of the skin class to use for this component when a validation error occurs. | SkinnableComponent | ||
| Type: Class CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 3 Runtime Versions: Flash9, AIR 1.1 Skin used to draw the focus rectangle. | UIComponent | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 The name of the font to use, or a comma-separated list of font names. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Font lookup to use. | SkinnableDataContainer | ||
| Type: Number Format: Length CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Height of the text, in pixels. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Determines whether the text is italic font. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Determines whether the text is boldface. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 3 Runtime Versions: Flash9, AIR 1.1 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 Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Indicates under what conditions the horizontal scroll bar is displayed. | List | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4.5 Runtime Versions: Flash10, AIR 2.5 The primary interaction mode for this component. | UIComponent | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Rule used to justify text in a paragraph. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 The style used for justification of the paragraph. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 The style used for justification of the paragraph. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4.1 Runtime Versions: Flash10, AIR 1.5 Specifies the desired layout direction of a component. | UIComponent | ||
| Type: String CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 3 Runtime Versions: Flash9, AIR 1.1 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: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Controls which of the ligatures that are defined in the font may be used in the text. | SkinnableDataContainer | ||
| Type: Object CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Leading controls for the text. | SkinnableDataContainer | ||
| Type: Boolean CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 If true, applies strikethrough, a line drawn through the middle of the text. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 The locale of the text. | SkinnableDataContainer | ||
paddingBottom | Type: Number Format: Length CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Bottom inset, in pixels, for the text in the prompt area of the control. The default value is 3. | ComboBox | ||
paddingLeft | Type: Number Format: Length CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Left inset, in pixels, for the text in the prompt area of the control. The default value is 3. | ComboBox | ||
paddingRight | Type: Number Format: Length CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Right inset, in pixels, for the text in the prompt area of the control. The default value is 3. | ComboBox | ||
paddingTop | Type: Number Format: Length CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Top inset, in pixels, for the text in the prompt area of the control. The default value is 5. | ComboBox | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 The rendering mode used for this text which applies only to embedded fonts. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 3 Runtime Versions: Flash9, AIR 1.1 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: Boolean CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4.5 Runtime Versions: Flash10, AIR 1.5 Show the error border or skin when this component is invalid | UIComponent | ||
| Type: Boolean CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4.5 Runtime Versions: Flash10, AIR 1.5 Show the error tip when this component is invalid and the user rolls over it | UIComponent | ||
| Type: Class Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Name of the skin class to use for this component. | SkinnableComponent | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Alignment of text within a container. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Alignment of the last line in the paragraph relative to the container in justified text. | SkinnableDataContainer | ||
| Type: Number CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Alpha (transparency) value for the text. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Determines whether the text is underlined. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Specifies options for justifying text. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 3 Runtime Versions: Flash9, AIR 1.1 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 Language Version: ActionScript 3.0 Product Version: Flex 4.5 Runtime Versions: Flash10.1, AIR 2.5 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 Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 The amount of tracking (manual kerning) to be applied to the left of each character. | SkinnableDataContainer | ||
| Type: Object CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 The amount of tracking (manual kerning) to be applied to the right of each character. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: Yes Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 The type of typographic case used for this text. | SkinnableDataContainer | ||
| Type: String CSS Inheritance: No Language Version: ActionScript 3.0 Product Version: Flex 3 Runtime Versions: Flash9, AIR 1.1 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 Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Indicates under what conditions the vertical scroll bar is displayed. | List | ||
Spark Theme Styles
Mobile Theme Styles
Skin Parts
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 Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 An optional skin part that defines the DataGroup in the skin class where data items get pushed into, rendered, and laid out. | SkinnableDataContainer | ||
| Required: false Part Type: Static Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 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 Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 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 | ||
| Required: true Part Type: Static Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 A skin part that defines the anchor button. | DropDownListBase | ||
| Required: false Part Type: Static Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 The optional Scroller used to scroll the List. | List | ||
textInput:TextInput | Required: false Part Type: Static Language Version: ActionScript 3.0 Product Version: Flex 4 Runtime Versions: Flash10, AIR 1.5 Optional skin part that holds the input text or the selectedItem text. | ComboBox | ||
Skin States
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.
Public Constants
| Constant | Defined By | ||
|---|---|---|---|
| CUSTOM_SELECTED_ITEM : int [static]
Static constant representing the value of the selectedIndex property
when the user enters a value into the prompt area, and the value is committed. | ComboBox | ||
Property Detail
enableIME | property |
imeMode | property |
itemMatchingFunction | property |
public var itemMatchingFunction:Function = null| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies a callback function used to search the item list as the user enters characters into the prompt area. As the user enters characters, the drop-down area of the control opens. It then and scrolls to and highlights the closest match in the item list.
The function referenced by this property takes an input string and returns the index of the items in the data provider that match the input. The items are returned as a Vector.<int> of indices in the data provider.
The callback function must have the following signature:
function myMatchingFunction(comboBox:ComboBox, inputText:String):Vector.<int>
If the value of this property is null, the ComboBox finds matches using the default algorithm. By default, if an input string of length n is equivalent to the first n characters of an item (ignoring case), then it is a match to that item. For example, 'aRiz' is a match to "Arizona" while 'riz' is not.
To disable search, create a callback function that returns an empty Vector.<int>.
The default value is null.
labelToItemFunction | property |
labelToItemFunction:Function| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies a callback function to convert a new value entered into the prompt area to the same data type as the data items in the data provider. The function referenced by this properly is called when the text in the prompt area is committed, and is not found in the data provider.
The callback function must have the following signature:
function myLabelToItem(value:String):Object
Where value is the String entered in the prompt area.
The function returns an Object that is the same type as the items
in the data provider.
The default callback function returns value.
Implementation
public function get labelToItemFunction():Function public function set labelToItemFunction(value:Function):voidmaxChars | property |
maxChars:int| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
The maximum number of characters that the prompt area can contain, as entered by a user. A value of 0 corresponds to no limit.
The default value is 0.
Implementation
public function get maxChars():int public function set maxChars(value:int):voidopenOnInput | property |
public var openOnInput:Boolean = true| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
If true, the drop-down list opens when the user edits the prompt area.
The default value is true.
prompt | property |
prompt:String| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4.5 |
| Runtime Versions: | Flash Player 10.2, AIR 2.0 |
Text to be displayed if/when the input text is null.
Prompt text appears when the control is first created. Prompt text disappears when the control gets focus, when the input text is non-null, or when an item in the list is selected. Prompt text reappears when the control loses focus, but only if no text was entered (if the value of the text field is null or the empty string).
You can change the style of the prompt text with CSS. If the control has prompt text
and is not disabled, the style is defined by the normalWithPrompt pseudo selector.
If the control is disabled, then the styles defined by the disabledWithPrompt pseudo selector are used.
The following example CSS changes the color of the prompt text in TextInput controls. The ComboBox control uses a TextInput control as a subcomponent for the prompt text and input, so its prompt text changes when you use this CSS:
@namespace s "library://ns.adobe.com/flex/spark";
s|TextInput:normalWithPrompt {
color: #CCCCFF;
}
The default value is null.
Implementation
public function get prompt():String public function set prompt(value:String):voidrestrict | property |
restrict:String| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies the set of characters that a user can enter into the prompt area. By default, the user can enter any characters, corresponding to a value of an empty string.
The default value is "".
Implementation
public function get restrict():String public function set restrict(value:String):voidConstructor Detail
ComboBox | () | Constructor |
public function ComboBox()| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Constructor.
Constant Detail
CUSTOM_SELECTED_ITEM | Constant |
public static const CUSTOM_SELECTED_ITEM:int| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Static constant representing the value of the selectedIndex property
when the user enters a value into the prompt area, and the value is committed.
Examples How to use this example
ComboBoxExample.mxml
<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the Spark ComboBox control -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
[Bindable]
public var complexDP:ArrayCollection = new ArrayCollection(
[ {ingredient:"Salmon", category:"Meat"},
{ingredient:"Potato", category:"Starch"},
{ingredient:"Cucumber", category:"Vegetable"},
{ingredient:"Steak", category:"Meat"},
{ingredient:"Rice", category:"Starch"},
{ingredient:"Cumin", category:"Spice"}
]
);
<!-- Function to handel custom input strings -->
private function myLabelToItemFunction(input:String):*
{
<!-- Returns object that matches items in dataProvider -->
return {ingredient:input, category:"mystery"};
}
]]>
</fx:Script>
<s:Panel title="Spark ComboBox Example" width="75%" height="75%">
<s:layout>
<s:VerticalLayout paddingTop="10" paddingLeft="10"/>
</s:layout>
<!-- Label that displayed current property values -->
<s:Label text="Index : {cb.selectedIndex}
Item : {cb.selectedItem.ingredient}
Type : {cb.selectedItem.category}"/>
<!-- ComboBox with custom labelToItem function -->
<s:ComboBox
id="cb"
dataProvider="{complexDP}"
width="150"
labelToItemFunction="{myLabelToItemFunction}"
selectedIndex="0"
labelField="ingredient"/>
</s:Panel>
</s:Application>
Thu Dec 6 2018, 01:12 PM -08:00