| Package | spark.components |
| Class | public class DataGroup |
| Inheritance | DataGroup  GroupBase UIComponent FlexSprite Sprite DisplayObjectContainer InteractiveObject DisplayObject EventDispatcher Object |
| Implements | IItemRendererOwner |
| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
The DataGroup class takes as children data items or visual elements that implement the IVisualElement interface and are DisplayObjects. Data items can be simple data items such String and Number objects, and more complicated data items such as Object and XMLNode objects. While these containers can hold visual elements, they are often used only to hold data items as children.
An item renderer defines the visual representation of the data item in the container. The item renderer converts the data item into a format that can be displayed by the container. You must pass an item renderer to a DataGroup container to render data items appropriately.
To improve performance and minimize application size, the DataGroup container cannot be skinned. If you want to apply a skin, use the SkinnableDataContainer instead.
The DataGroup container has the following default characteristics:
| Characteristic | Description |
|---|---|
| Default size | Large enough to display its children |
| Minimum size | 0 pixels |
| Maximum size | 10000 pixels wide and 10000 pixels high |
Show MXML Syntax
Hide MXML SyntaxThe <s:DataGroup> tag inherits all of the tag
attributes of its superclass and adds the following tag attributes:
<s:DataGroup
Properties
dataProvider="null"
itemRenderer="null"
itemRendererFunction="null"
typicalItem="null"
Events
rendererAdd="No default"
rendererRemove="No default"
/>
Default MXML PropertydataProvider
More examples
Creating and managing container children
at run time
Creating a Spark DataGroup and Spark SkinnableDataContainer container
Using a default item renderer with a Spark container
Adding and removing children at runtime
Using virtualization with Spark DataGroup and SkinnableDataContainer
Creating a Spark DataGroup and Spark SkinnableDataContainer container
Using a default item renderer with a Spark container
Adding and removing children at runtime
Using virtualization with Spark DataGroup and SkinnableDataContainer
Learn more
About containers
Using containers
Using container events
Layout with Spark containers
Skinning Spark containers
Scrolling Spark containers
Controlling child order
Flex coordinate systems
About sizing and positioning
About basic layout properties and methods
Sizing components
Using padding and custom gaps
Positioning components
Using constraints to control component layout
About Spark containers
About container children
About Spark layouts
The Spark DataGroup and Spark SkinnableDataContainer containers
Using containers
Using container events
Layout with Spark containers
Skinning Spark containers
Scrolling Spark containers
Controlling child order
Flex coordinate systems
About sizing and positioning
About basic layout properties and methods
Sizing components
Using padding and custom gaps
Positioning components
Using constraints to control component layout
About Spark containers
About container children
About Spark layouts
The Spark DataGroup and Spark SkinnableDataContainer containers
Related API Elements
spark.components.SkinnableDataContainer
spark.components.Group
spark.skins.spark.DefaultItemRenderer
spark.skins.spark.DefaultComplexItemRenderer
spark.components.Group
spark.skins.spark.DefaultItemRenderer
spark.skins.spark.DefaultComplexItemRenderer
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 | |
| autoLayout : Boolean
If true, measurement and layout are done
when the position or size of a child is changed. | GroupBase | |
| 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. | DataGroup | ||
| 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 | |
| className : String [read-only]
The name of this instance's class, such as "Button". | UIComponent | |
| clipAndEnableScrolling : Boolean
If true, specifies to clip the children to the boundaries of the viewport. | GroupBase | |
| constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
| contentHeight : Number [read-only]
The height of the viewport's content. | GroupBase | |
| 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 | |
| contentWidth : Number [read-only]
The width of the viewport's contents. | GroupBase | |
| 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. | DataGroup | ||
| 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 | |
| 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
A flag that indicates whether child objects can receive focus. | UIComponent | |
| 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 | |
| horizontalScrollPosition : Number
The x coordinate of the origin of the viewport in the component's coordinate system,
where the default value is (0,0) corresponding to the upper-left corner of the component. | GroupBase | |
| 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 | |
| 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. | DataGroup | ||
| itemRendererFunction : Function
Function that returns an item renderer IFactory for a
specific item. | DataGroup | ||
| layout : LayoutBase
The layout object for this container. | GroupBase | |
| 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 | |
| luminosityClip : Boolean
A property that controls whether the luminosity
mask clips the masked content. | GroupBase | |
| luminosityInvert : Boolean
A property that controls the calculation of the RGB
color value of a graphic element being masked by
a luminosity mask. | GroupBase | |
| maintainProjectionCenter : Boolean
When true, the component keeps its projection matrix centered on the
middle of its bounding box. | UIComponent | |
| mask : DisplayObject [override]
Sets the mask. | GroupBase | |
| maskType : String
The mask type. | GroupBase | |
| 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 | |
| mouseEnabledWhereTransparent : Boolean
When true, this property
ensures that the entire bounds of the Group respond to
mouse events such as click and roll over. | GroupBase | |
| 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 | |
| numElements : int [read-only]
The number of visual elements in this container. | GroupBase | |
| opaqueBackground : Object
Specifies whether the display object is opaque with a certain background color. | DisplayObject | |
| overlay : DisplayLayer [read-only]
The overlay plane for this group. | GroupBase | |
| owner : DisplayObjectContainer
The owner of this IVisualElement object. | UIComponent | |
| 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 | |
| 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 | |
| resizeMode : String
The ResizeMode for this container. | GroupBase | |
| 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 | |
| showInAutomationHierarchy : Boolean
A flag that determines if an automation object
shows in the automation hierarchy. | UIComponent | |
| 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 | |
| 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. | DataGroup | ||
| 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 | |
| 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 | |
| verticalScrollPosition : Number
The y coordinate of the origin of the viewport in the component's coordinate system,
where the default value is (0,0) corresponding to the upper-left corner of the component. | GroupBase | |
| 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 | ||
|---|---|---|---|
Constructor. | DataGroup | ||
| 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 | |
|
Determines whether the specified display object is a child of the DisplayObjectContainer instance or
the instance itself. | DisplayObjectContainer | |
|
Determines whether the specified IVisualElement is a
child of the container instance or the instance
itself. | GroupBase | |
|
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 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 | |
|
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 | |
|
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 | |
|
Returns the visual element at the specified index. | GroupBase | |
|
Returns the index position of a visual element. | GroupBase | |
|
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 change to the horizontal scroll position to handle
different scrolling options. | GroupBase | |
Return the indices of the item renderers visible within this DataGroup. | DataGroup | ||
|
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 | |
|
Returns the change to the vertical scroll position to handle
different scrolling options. | GroupBase | |
|
Layouts that honor the useVirtualLayout flag will use this
method at updateDisplayList() time to get layout elements that are "in view",
i.e. | GroupBase | |
|
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 | |
Call this method if some aspect of the typicalItem
has changed that should be reflected by the layout. | DataGroup | ||
|
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
Given a data item, return the toString() representation
of the data item for an item renderer to display. | DataGroup | ||
|
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 | |
|
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 | |
|
Sets the contentWidth and contentHeight
properties. | GroupBase | |
|
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 the renderer for reuse. | DataGroup | ||
|
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
Events
| Event | Summary | Defined By | ||
|---|---|---|---|---|
| [broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active. | EventDispatcher | ||
| Dispatched when the component is added to a container as a content child by using the addChild(), addChildAt(), addElement(), or addElementAt() method. | UIComponent | ||
| Dispatched when a display object is added to the display list. | DisplayObject | ||
| Dispatched when a display object is added to the on stage display list, either directly or through the addition of a sub tree in which the display object is contained. | DisplayObject | ||
| Dispatched when the user selects 'Clear' (or 'Delete') from the text context menu. | InteractiveObject | ||
| Dispatched when a user presses and releases the main button of the user's pointing device over the same InteractiveObject. | InteractiveObject | ||
| Dispatched when a user gesture triggers the context menu associated with this interactive object in an AIR application. | InteractiveObject | ||
| Dispatched when the user activates the platform-specific accelerator key combination for a copy operation or selects 'Copy' from the text context menu. | InteractiveObject | ||
| 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 when the user activates the platform-specific accelerator key combination for a cut operation or selects 'Cut' from the text context menu. | InteractiveObject | ||
| [broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive. | EventDispatcher | ||
| Dispatched when a user presses and releases the main button of a pointing device twice in rapid succession over the same InteractiveObject when that object's doubleClickEnabled flag is set to true. | InteractiveObject | ||
| 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 | ||
| [broadcast event] Dispatched when the playhead is entering a new frame. | DisplayObject | ||
| Dispatched after the component has entered a view state. | UIComponent | ||
| [broadcast event] Dispatched when the playhead is exiting the current frame. | DisplayObject | ||
| Dispatched just before the component exits a view state. | UIComponent | ||
| Dispatched after a display object gains focus. | InteractiveObject | ||
| Dispatched after a display object loses focus. | InteractiveObject | ||
| [broadcast event] Dispatched after the constructors of frame display objects have run but before frame scripts have run. | DisplayObject | ||
| Dispatched when the user creates a point of contact along the edge of the touch surface with an InteractiveObject instance, (such as tapping along the edge of the touch surface on Siri Remote for Apple TV) Some devices might also interpret this contact as a combination of several touch events, as well. | InteractiveObject | ||
| Dispatched when the user presses two points of contact over the same InteractiveObject instance on a touch-enabled device (such as presses and releases two fingers over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| Dispatched when the user moves a point of contact over the InteractiveObject instance on a touch-enabled device (such as moving a finger from left to right over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| Dispatched when the user performs a rotation gesture at a point of contact with an InteractiveObject instance (such as touching two fingers and rotating them over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| Dispatched when the user performs a swipe gesture at a point of contact with an InteractiveObject instance (such as touching three fingers to a screen and then moving them in parallel over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| Dispatched when the user creates a point of contact with an InteractiveObject instance, then taps on a touch-enabled device (such as placing several fingers over a display object to open a menu and then taps one finger to select a menu item on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| Dispatched when the user performs a zoom gesture at a point of contact with an InteractiveObject instance (such as touching two fingers to a screen and then quickly spreading the fingers apart over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| Dispatched when an object's state changes from visible to invisible. | UIComponent | ||
| This event is dispatched to any client app that supports inline input with an IME | InteractiveObject | ||
| 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 presses a key. | InteractiveObject | ||
| Dispatched when the user attempts to change focus by using keyboard navigation. | InteractiveObject | ||
| Dispatched when the user releases a key. | InteractiveObject | ||
| Dispatched when a user presses and releases the middle button of the user's pointing device over the same InteractiveObject. | InteractiveObject | ||
| Dispatched when a user presses the middle pointing device button over an InteractiveObject instance. | InteractiveObject | ||
| Dispatched when a user releases the pointing device button over an InteractiveObject instance. | InteractiveObject | ||
| Dispatched when a user presses the pointing device button over an InteractiveObject instance. | InteractiveObject | ||
| Dispatched from a component opened using the PopUpManager when the user clicks outside it. | UIComponent | ||
| Dispatched when the user attempts to change focus by using a pointer device. | InteractiveObject | ||
| Dispatched when a user moves the pointing device while it is over an InteractiveObject. | InteractiveObject | ||
| Dispatched when the user moves a pointing device away from an InteractiveObject instance. | InteractiveObject | ||
| Dispatched when the user moves a pointing device over an InteractiveObject instance. | InteractiveObject | ||
| Dispatched when a user releases the pointing device button over an InteractiveObject instance. | InteractiveObject | ||
| Dispatched when a mouse wheel is spun over an InteractiveObject instance. | InteractiveObject | ||
| 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 by the drag initiator InteractiveObject when the user releases the drag gesture. | InteractiveObject | ||
| Dispatched by the target InteractiveObject when a dragged object is dropped on it and the drop has been accepted with a call to DragManager.acceptDragDrop(). | InteractiveObject | ||
| Dispatched by an InteractiveObject when a drag gesture enters its boundary. | InteractiveObject | ||
| Dispatched by an InteractiveObject when a drag gesture leaves its boundary. | InteractiveObject | ||
| Dispatched by an InteractiveObject continually while a drag gesture remains within its boundary. | InteractiveObject | ||
| Dispatched at the beginning of a drag operation by the InteractiveObject that is specified as the drag initiator in the DragManager.doDrag() call. | InteractiveObject | ||
| Dispatched during a drag operation by the InteractiveObject that is specified as the drag initiator in the DragManager.doDrag() call. | InteractiveObject | ||
| Dispatched when the user activates the platform-specific accelerator key combination for a paste operation or selects 'Paste' from the text context menu. | InteractiveObject | ||
| Dispatched at the beginning of the component initialization sequence. | UIComponent | ||
| Dispatched when the user lowers an active stylus past the proximity detection threshold of the screen. | InteractiveObject | ||
| Dispatched when the user lifts an active stylus above the proximity detection threshold of the screen. | InteractiveObject | ||
| Dispatched when the user moves an active stylus over the screen while remaining within the proximity detection threshold. | InteractiveObject | ||
| Dispatched when the user moves an active stylus away from this InteractiveObject while remaining within the proximity detection threshold of the screen. | InteractiveObject | ||
| Dispatched when the user moves an active stylus directly above this InteractiveObject while remaining within the proximity detection threshold of the screen. | InteractiveObject | ||
| Dispatched when the user moves an active stylus away from this InteractiveObject and any of its children while remaining within the proximity detection threshold of the screen. | InteractiveObject | ||
| Dispatched when the user moves an active stylus over this InteractiveObject from outside the object's tree of descendents in the display list (while remaining within the proximity detection threshold of the screen). | InteractiveObject | ||
| Dispatched when a user releases the button on the pointing device after the user first pressed the button over an InteractiveObject instance and then moved the pointing device off of the InteractiveObject instance. | InteractiveObject | ||
| 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 display object is about to be removed from the display list. | DisplayObject | ||
| Dispatched when a display object is about to be removed from the display list, either directly or through the removal of a sub tree in which the display object is contained. | DisplayObject | ||
| [broadcast event] Dispatched when the display list is about to be updated and rendered. | DisplayObject | ||
| Dispatched when a renderer is added to this dataGroup. | DataGroup | |||
| Dispatched when a renderer is removed from this dataGroup. | DataGroup | |||
| Dispatched when the component is resized. | UIComponent | ||
| Dispatched when a user presses and releases the right button of the user's pointing device over the same InteractiveObject. | InteractiveObject | ||
| Dispatched when a user presses the pointing device button over an InteractiveObject instance. | InteractiveObject | ||
| Dispatched when a user releases the pointing device button over an InteractiveObject instance. | InteractiveObject | ||
| Dispatched when the user moves a pointing device away from an InteractiveObject instance. | InteractiveObject | ||
| Dispatched when the user moves a pointing device over an InteractiveObject instance. | InteractiveObject | ||
| Dispatched when the user activates the platform-specific accelerator key combination for a select all operation or selects 'Select All' from the text context menu. | InteractiveObject | ||
| Dispatched when an object's state changes from invisible to visible. | UIComponent | ||
| Dispatched immediately after the soft keyboard is raised. | InteractiveObject | ||
| Dispatched immediately before the soft keyboard is raised. | InteractiveObject | ||
| Dispatched immediately after the soft keyboard is lowered. | InteractiveObject | ||
| 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 when the value of the object's tabChildren flag changes. | InteractiveObject | ||
| Dispatched when the object's tabEnabled flag changes. | InteractiveObject | ||
| Dispatched when the value of the object's tabIndex property changes. | InteractiveObject | ||
| Dispatched when a user enters one or more characters of text. | InteractiveObject | ||
| 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 | ||
| Dispatched when the user first contacts a touch-enabled device (such as touches a finger to a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| Dispatched when the user removes contact with a touch-enabled device (such as lifts a finger off a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| 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 the user touches the device, and is continuously dispatched until the point of contact is removed. | InteractiveObject | ||
| Dispatched when the user moves the point of contact away from InteractiveObject instance on a touch-enabled device (such as drags a finger from one display object to another on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| Dispatched when the user moves the point of contact over an InteractiveObject instance on a touch-enabled device (such as drags a finger from a point outside a display object to a point over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| Dispatched when the user moves the point of contact away from an InteractiveObject instance on a touch-enabled device (such as drags a finger from over a display object to a point outside the display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| Dispatched when the user moves the point of contact over an InteractiveObject instance on a touch-enabled device (such as drags a finger from a point outside a display object to a point over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| Dispatched when the user lifts the point of contact over the same InteractiveObject instance on which the contact was initiated on a touch-enabled device (such as presses and releases a finger from a single point over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
| 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 | ||
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
Spark Theme Styles
Halo Theme Styles
Mobile Theme Styles
Public Constants
Property Detail
baselinePosition | property |
baselinePosition:Number [read-only] [override] | Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
The y-coordinate of the baseline of the first line of text of the component.
This property is used to implement
the baseline constraint style.
It is also used to align the label of a FormItem
with the controls in the FormItem.
Each component should override this property.
Implementation
override public function get baselinePosition():NumberdataProvider | property |
dataProvider:IList| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
The data provider for this DataGroup. It must be an IList.
There are several IList implementations included in the Flex framework, including ArrayCollection, ArrayList, and XMLListCollection.
The default value is null.
This property can be used as the source for data binding. When this property is modified, it dispatches the dataProviderChanged event.
Implementation
public function get dataProvider():IList public function set dataProvider(value:IList):voidRelated API Elements
itemRenderer | property |
itemRenderer:IFactory| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
The item renderer to use for data items.
The class must implement the IDataRenderer interface.
If defined, the itemRendererFunction property
takes precedence over this property.
The default value is null.
Implementation
public function get itemRenderer():IFactory public function set itemRenderer(value:IFactory):voiditemRendererFunction | property |
itemRendererFunction:Function| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Function that returns an item renderer IFactory for a specific item. You should define an item renderer function similar to this sample function:
function myItemRendererFunction(item:Object):IFactory
The default value is null.
Implementation
public function get itemRendererFunction():Function public function set itemRendererFunction(value:Function):voidtypicalItem | property |
typicalItem:Object| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
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.
Similarly virtual layouts use this item to define the size
of layout elements that have not been scrolled into view.
The container uses the typical data item, and the associated item renderer, to determine the default size of the container children. By defining the typical item, the container does not have to size each child as it is drawn on the screen.
Setting this property sets the typicalLayoutElement property
of the layout.
Restriction: if the typicalItem is an IVisualItem, it must not
also be a member of the data Provider.
The default value is null.
Implementation
public function get typicalItem():Object public function set typicalItem(value:Object):voidConstructor Detail
DataGroup | () | Constructor |
public function DataGroup()| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Constructor.
Method Detail
getItemIndicesInView | () | method |
public function getItemIndicesInView():Vector.<int>| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4.5 |
| Runtime Versions: | Flash Player 10, AIR 2.5 |
Return the indices of the item renderers visible within this DataGroup.
If clipAndEnableScrolling is true,
return the indices of the visible = true
ItemRenderers that overlap this DataGroup's scrollRect.
That is, the ItemRenders
that are at least partially visible relative to this DataGroup.
If clipAndEnableScrolling is false,
return a list of integers from
0 to dataProvider.length - 1.
Note that if this DataGroup's owner is a
Scroller, then clipAndEnableScrolling has been
set to true.
The corresponding item renderer for each returned index can be
retrieved with the getElementAt() method,
even if the layout is virtual
The order of the items in the returned Vector is not guaranteed.
Note that the VerticalLayout and HorizontalLayout classes provide bindable
firstIndexInView and lastIndexInView properties
which contain the same information as this method.
Vector.<int> — The indices of the visible item renderers.
|
invalidateTypicalItemRenderer | () | method |
public function invalidateTypicalItemRenderer():void| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4.6 |
| Runtime Versions: | Flash Player 11, AIR 3 |
Call this method if some aspect of the typicalItem
has changed that should be reflected by the layout.
This method is called automatically if the typicalItem
is changed directly. That means if the property is set to a new value
that is not "==" to current value.
itemToLabel | () | method |
public function itemToLabel(item:Object):String| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4.5 |
| Runtime Versions: | Flash Player 10, AIR 2.5 |
Returns the String for display in an item renderer.
The String is written to the labelText
property of the item renderer.
Given a data item, return the toString() representation
of the data item for an item renderer to display.
Null data items return the empty string.
Parameters
item:Object — The data item to display.
|
String — The String for display in an item renderer.
|
updateRenderer | () | method |
public function updateRenderer(renderer:IVisualElement, itemIndex:int, data:Object):void| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4.5 |
| Runtime Versions: | Flash Player 10, AIR 2.5 |
Updates the renderer for reuse. This method first prepares the item renderer for reuse by cleaning out any stale properties as well as updating it with new properties.
The last thing this method should do is set the data property
of the item renderer.
Parameters
renderer:IVisualElement — The item renderer.
| |
itemIndex:int — The index of the data in the data provider.
| |
data:Object — The data object this item renderer is representing.
|
Event Detail
rendererAdd | Event |
Event Object Type:
property RendererExistenceEvent.type =
spark.events.RendererExistenceEventproperty RendererExistenceEvent.type =
spark.events.RendererExistenceEvent.RENDERER_ADD| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Dispatched when a renderer is added to this dataGroup.
event.renderer is the renderer that was added.
RendererExistenceEvent.RENDERER_ADD constant
defines the value of the type property of the event
object for an rendererAdd 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. |
data | The data item that the renderer is visualizing. |
index | The data provider index for the renderer that was added. |
renderer | Contains a reference to the renderer that was added |
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. |
rendererRemove | Event |
Event Object Type:
property RendererExistenceEvent.type =
spark.events.RendererExistenceEventproperty RendererExistenceEvent.type =
spark.events.RendererExistenceEvent.RENDERER_REMOVE| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Dispatched when a renderer is removed from this dataGroup.
event.renderer is the renderer that was removed.
RendererExistenceEvent.RENDERER_REMOVE constant
defines the value of the type property of the event
object for an rendererRemove 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. |
data | The data item that the renderer was visualizing. |
index | The data provider index for the renderer that is being removed. |
renderer | Contains a reference to the renderer that is about to be removed. |
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. |
Examples How to use this example
DataGroupExample.mxml
<?xml version="1.0"?>
<!-- Simple example to demonstrate the Spark DataGroup component -->
<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[
// need to import the item renderers
import spark.skins.spark.DefaultItemRenderer;
import spark.skins.spark.DefaultComplexItemRenderer;
import spark.components.Button;
public function customItemRendererFunction(item:*):IFactory {
if (item is Button) {
return new ClassFactory(DefaultComplexItemRenderer);
} else {
return new ClassFactory(DefaultItemRenderer);
}
}
]]>
</fx:Script>
<s:Panel title="DataGroup Component Example"
width="75%" height="75%"
horizontalCenter="0" verticalCenter="0">
<s:VGroup left="10" right="10" top="10" bottom="10">
<!-- A DataGroup can hold primitive data items if an
item renderer is defined. -->
<s:DataGroup itemRenderer="spark.skins.spark.DefaultItemRenderer">
<s:layout>
<s:VerticalLayout gap="1" />
</s:layout>
<s:dataProvider>
<s:ArrayCollection>
<fx:String>primitive data 1</fx:String>
<fx:String>primitive data 2</fx:String>
<fx:String>primitive data 3</fx:String>
</s:ArrayCollection>
</s:dataProvider>
</s:DataGroup>
<mx:Spacer height="20" />
<!-- An item renderer function can be defined in order to display
a mix of data and graphical items. -->
<s:DataGroup itemRendererFunction="customItemRendererFunction">
<s:layout>
<s:HorizontalLayout gap="1" />
</s:layout>
<s:dataProvider>
<s:ArrayCollection>
<s:Button label="Button 1" />
<fx:String>primitive data string</fx:String>
<s:Button label="Button 2" />
</s:ArrayCollection>
</s:dataProvider>
</s:DataGroup>
</s:VGroup>
</s:Panel>
</s:Application>
Mon Apr 10 2017, 12:28 PM -07:00