Pacchetto | spark.components |
Classe | public class ButtonBar |
Ereditarietà | ButtonBar ButtonBarBase ListBase SkinnableDataContainer SkinnableContainerBase SkinnableComponent UIComponent FlexSprite Sprite DisplayObjectContainer InteractiveObject DisplayObject EventDispatcher Object |
Implementa | IFocusManagerComponent |
Sottoclassi | AXMBreadCrumb, AXMButtonBar |
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 4 |
Versioni runtime: | Flash Player 10, AIR 1.5 |
The typical use for a button bar is for grouping
a set of related buttons together, which gives them a common look
and navigation, and handling the logic for the change
event
in a single place.
The ButtonBar control creates Button controls based on the value of
its dataProvider
property.
Use methods such as addItem()
and removeItem()
to manipulate the dataProvider
property to add and remove data items.
The ButtonBar control automatically adds or removes the necessary children based on
changes to the dataProvider
property.
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.
For non-mobile projects, you can use the ButtonBar control to set the active child of a ViewStack container, as the following example shows:
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.
<s:ButtonBar dataProvider="{myViewStack}" requireSelection="true" /> <mx:ViewStack id="myViewStack" borderStyle="solid"> <s:NavigatorContent id="search" label="Search"> <s:Label text="Search Screen"/> </s:NavigatorContent> <s:NavigatorContent id="custInfo" label="Customer Info"> <s:Label text="Customer Info"/> </s:NavigatorContent> <s:NavigatorContent id="accountInfo" label="Account Info"> <s:Label text="Account Info"/> </s:NavigatorContent> </mx:ViewStack>
The ButtonBar control has the following default characteristics:
Characteristic | Description |
---|---|
Default size | Large enough to display all buttons |
Minimum size | 0 pixels |
Maximum size | No limit |
Default skin class | spark.skins.spark.ButtonBarSkin |
The <s:ButtonBar>
tag inherits all of the tag
attributes of its superclass and adds the following tag attributes:
<s:ButtonBar />
Proprietà MXML predefinitadataProvider
Altri esempi
Using Spark list-based controls
Spark ButtonBar and TabBar controls
Elementi API correlati
Metodo | Definito da | ||
---|---|---|---|
Constructor. | ButtonBar | ||
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registra un oggetto listener di eventi con un oggetto EventDispatcher, in modo che il listener riceva la notifica di un evento. | EventDispatcher | ||
Adds a non-visual style client to this component instance. | UIComponent | ||
Indica se le restrizioni di sicurezza possono determinare l'omissione di eventuali oggetti di visualizzazione dall'elenco restituito dalla chiamata al metodo DisplayObjectContainer.getObjectsUnderPoint() con il punto specificato. | DisplayObjectContainer | ||
Queues a function to be called later. | UIComponent | ||
Deletes a style property from this component instance. | UIComponent | ||
Determina se l'oggetto di visualizzazione specificato è un elemento secondario dell'istanza DisplayObjectContainer oppure è l'istanza stessa. | 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 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 | ||
Restituisce un rettangolo che definisce l'area dell'oggetto di visualizzazione relativa al sistema di coordinate dell'oggetto targetCoordinateSpace. | 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 | ||
Restituisce l'oggetto di visualizzazione secondario al quale corrisponde il nome specificato. | 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 | ||
Restituisce un array di oggetti che si trovano sotto il punto specificato e sono elementi secondari (di uno o più livelli inferiori) di questa istanza DisplayObjectContainer. | DisplayObjectContainer | ||
Returns the element's preferred height. | UIComponent | ||
Returns the element's preferred width. | UIComponent | ||
Restituisce un rettangolo che definisce i bordi dell'oggetto di visualizzazione in base al sistema di coordinate definito dal parametro targetCoordinateSpace, esclusi gli eventuali tratti presenti sulle forme. | 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 | ||
Converte le coordinate dello stage (globali) in quelle (locali) dell'oggetto di visualizzazione per l'oggetto Point. | DisplayObject | ||
Converte un punto bidimensionale dalle coordinate dello stage (globali) in quelle (locali) di un oggetto di visualizzazione tridimensionale. | DisplayObject | ||
Returns true if currentCSSState is not null. | UIComponent | ||
Verifica se per l'oggetto EventDispatcher sono presenti listener registrati per un tipo specifico di evento. | EventDispatcher | ||
Indica se per un oggetto è definita una proprietà specifica. | Object | ||
Determines whether the specified state has been defined on this
UIComponent. | UIComponent | ||
Valuta il riquadro di delimitazione dell'oggetto di visualizzazione per verificare se si sovrappone o si interseca con il riquadro di delimitazione dell'oggetto di visualizzazione obj. | DisplayObject | ||
Valuta l'oggetto di visualizzazione per stabilire se si sovrappone o si interseca con il punto specificato dai parametri x e y. | 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 | ||
Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro. | Object | ||
[override]
Given a data item, return the correct text a renderer
should display while taking the labelField
and labelFunction properties into account. | ListBase | ||
Converte un punto tridimensionale delle coordinate (locali) dell'oggetto di visualizzazione tridimensionale in un punto bidimensionale nelle coordinate dello stage (globali). | DisplayObject | ||
Converts a Point object from local to content coordinates. | UIComponent | ||
Converte le coordinate dell'oggetto di visualizzazione (locali) in quelle dello stage (globali) per l'oggetto Point. | 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 | ||
Indica se la proprietà specificata esiste ed è enumerabile. | 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 | ||
Rimuove tutte le istanze DisplayObject secondarie dall'elenco degli elementi secondari dell'istanza DisplayObjectContainer. | DisplayObjectContainer | ||
Rimuove un listener dall'oggetto EventDispatcher. | EventDispatcher | ||
Removes a non-visual style client from this component instance. | UIComponent | ||
Replays the specified event. | UIComponent | ||
Alza una tastiera virtuale. | InteractiveObject | ||
Resolves a child by using the id provided. | UIComponent | ||
[statico]
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 | ||
Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche. | Object | ||
Sets a style property on this component instance. | UIComponent | ||
Called when the visible property changes. | UIComponent | ||
Consente all'utente di trascinare lo sprite specificato. | Sprite | ||
Consente all'utente di trascinare lo sprite specificato su un dispositivo abilitato per il tocco. | Sprite | ||
Interrompe in modo ricorsivo l’esecuzione della linea temporale di qualsiasi MovieClips che ha origine in questo oggetto. | DisplayObjectContainer | ||
Termina il metodo startDrag(). | Sprite | ||
Termina il metodo startTouchDrag(), utilizzato con i dispositivi abilitati per il tocco. | Sprite | ||
Detects changes to style properties. | UIComponent | ||
Flex calls the stylesInitialized() method when
the styles for a component are first initialized. | UIComponent | ||
[statico]
Blocks the background processing of methods
queued by callLater(),
until resumeBackgroundProcessing() is called. | UIComponent | ||
Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate. | 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 | ||
Restituisce il valore di base dell'oggetto specificato. | Object | ||
Returns a box Matrix which can be passed to drawRoundRect()
as the rot parameter when drawing a vertical gradient. | UIComponent | ||
Verifica se un listener di eventi è registrato con questo oggetto EventDispatcher o qualsiasi suo antenato per il tipo di evento specificato. | EventDispatcher |
Gli stili sono di tipo comune oppure associati a un tema specifico. Se lo stile è comune, può essere utilizzato con qualunque tema. Se è associato a un tema specifico, può essere utilizzato solo se la vostra applicazione ne fa uso.
Questo componente utilizza skin costituiti da più parti. Non impostate le parti degli skin direttamente. Vengono impostate dallo skin del componente.
Parte skin | Descrizione | Definito da | ||
---|---|---|---|---|
Obbligatorio: false Tipo parte: Statico Versione linguaggio: ActionScript 3.0 Versione prodotto: Flex 4 Versioni runtime: 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 | |||
firstButton:IFactory | Obbligatorio: false Tipo parte: Dinamico Versione linguaggio: ActionScript 3.0 Versione prodotto: Flex 4 Versioni runtime: Flash10, AIR 1.5 A skin part that defines the first button. IFactory deve restituire un oggetto del tipo IVisualElement. | ButtonBar | ||
lastButton:IFactory | Obbligatorio: false Tipo parte: Dinamico Versione linguaggio: ActionScript 3.0 Versione prodotto: Flex 4 Versioni runtime: Flash10, AIR 1.5 A skin part that defines the last button. IFactory deve restituire un oggetto del tipo IVisualElement. | ButtonBar | ||
middleButton:IFactory | Obbligatorio: true Tipo parte: Dinamico Versione linguaggio: ActionScript 3.0 Versione prodotto: Flex 4 Versioni runtime: Flash10, AIR 1.5 A skin part that defines the middle button(s). IFactory deve restituire un oggetto del tipo IVisualElement. | ButtonBar |
Per applicare uno skin al componente, implementate uno skin che definisce gli stati seguenti. Benché sia necessario implementare tutti gli stati dello skin, potete lasciare vuoto uno stato di skin. Uno stato di skin vuoto non applica alcuna modifica allo stato predefinito dello skin.
ButtonBar | () | Funzione di costruzione |
public function ButtonBar()
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 4 |
Versioni runtime: | Flash Player 10, AIR 1.5 |
Constructor.
<?xml version="1.0"?> <!-- Simple example to demonstrate the Spark ButtonBar --> <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:Style> @namespace "library://ns.adobe.com/flex/spark"; ButtonBar ToggleButton:upAndSelected, ButtonBar ToggleButton:overAndSelected, ButtonBar ToggleButton:downAndSelected, ButtonBar ToggleButton:disabledAndSelected { chromeColor: #663366; color: #9999CC; } ButtonBar { chromeColor: #9999CC; color: #663366; } </fx:Style> <fx:Script> <![CDATA[ import spark.events.IndexChangeEvent; private function changeSelection(event:IndexChangeEvent): void { selectionText.text = "Selected Item: " + ButtonBar(event.target).selectedItem; } ]]> </fx:Script> <s:Panel title="Spark ButtonBar Example" width="75%" height="75%" horizontalCenter="0" verticalCenter="0"> <s:Label text="Select an item below:" x="10" y="15" /> <s:ButtonBar id="viewMenu" requireSelection="true" x="10" y="40" width="320" change="changeSelection(event)"> <s:dataProvider> <s:ArrayCollection source="['Home', 'Rooms', 'Dining']" /> </s:dataProvider> </s:ButtonBar> <s:Label x="10" y="75" id="selectionText" /> </s:Panel> </s:Application>
Tue Jun 12 2018, 02:44 PM Z