StackLayout

Pacchetto	com.adobe.mosaic.layouts
Classe	public class StackLayout
Ereditarietà	StackLayout BasicLayout LayoutBase OnDemandEventDispatcher Object
Implementa	ISelectable

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Adobe Digital Enterprise Platform Experience Services - Composite Application Framework 10

Versioni runtime:

AIR 2.6, Flash Player 10.2

The StackLayout presents only one child at a time, with the child filling up the entire space alloted to the StackLayout. The selection of the child may be done by setting either the selectedIndex property.

StackLayout partially implements ISelectableList so the layout may be used as the dataProvider for a ButtonBar.

Proprietà pubbliche

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	Proprietà		Definito da
		clipAndEnableScrolling : Boolean If true, specifies to clip the children to the boundaries of the viewport.	LayoutBase
		constructor : Object Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto.	Object
		dropIndicator : DisplayObject The DisplayObject that this layout uses for the drop indicator during a drag-and-drop operation.	LayoutBase
		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.	LayoutBase
		layoutTarget : GroupBase [sola lettura] The Group for which the layout is working (arranging and sizing its children).	StackLayout
		selectedIndex : int The index of the currently selected element of the group target.	StackLayout
		target : GroupBase The GroupBase container whose elements are measured, sized and positioned by this layout.	LayoutBase
		typicalLayoutElement : ILayoutElement Used by layouts when fixed row/column sizes are requested but a specific size isn't specified.	LayoutBase
		useVirtualLayout : Boolean A container can hold any number of children.	LayoutBase
		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.	LayoutBase

Metodi pubblici

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	Metodo		Definito da
		StackLayout() Constructor	StackLayout
		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.	OnDemandEventDispatcher
		calculateDropLocation(dragEvent:DragEvent):DropLocation Calculates the drop location in the data provider of the drop target for the specified dragEvent.	LayoutBase
		clearVirtualLayoutCache():void When useVirtualLayout is true, this method can be used by the layout target to clear cached layout information when the target changes.	LayoutBase
		dispatchEvent(event:Event):Boolean Dispatches an event into the event flow.	OnDemandEventDispatcher
		elementAdded(index:int):void [override] Intercepts the element being added and resizes it to take up the entire space of the layout.	StackLayout
		elementRemoved(index:int):void [override] Removes the given element from the layout and adjusts the selectedIndex if the element being removed as the currently selected element.	StackLayout
		getElementBounds(index:int):Rectangle Returns the specified element's layout bounds as a Rectangle or null if the index is invalid, the corresponding element is null, includeInLayout=false, or if this layout's target property is null.	LayoutBase
		getHorizontalScrollPositionDelta(navigationUnit:uint):Number Returns the change to the horizontal scroll position to handle different scrolling options.	LayoutBase
		getNavigationDestinationIndex(currentIndex:int, navigationUnit:uint, arrowKeysWrapFocus:Boolean):int Delegation method that determines which item to navigate to based on the current item in focus and user input in terms of NavigationUnit.	LayoutBase
		getScrollPositionDeltaToElement(index:int):Point Computes the verticalScrollPosition and horizontalScrollPosition deltas needed to scroll the element at the specified index into view.	LayoutBase
		getVerticalScrollPositionDelta(navigationUnit:uint):Number Returns the change to the vertical scroll position to handle different scrolling options.	LayoutBase
		hasEventListener(type:String):Boolean Checks whether the EventDispatcher object has any listeners registered for a specific type of event.	OnDemandEventDispatcher
		hasOwnProperty(name:String):Boolean Indica se per un oggetto è definita una proprietà specifica.	Object
		hideDropIndicator():void Hides the previously shown drop indicator, created by the showDropIndicator() method, removes it from the display list and also stops the drag scrolling.	LayoutBase
		isPrototypeOf(theClass:Object):Boolean Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro.	Object
		measure():void Measures the target's default size based on its content, and optionally measures the target's default minimum size.	LayoutBase
		propertyIsEnumerable(name:String):Boolean Indica se la proprietà specificata esiste ed è enumerabile.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Removes a listener from the EventDispatcher object.	OnDemandEventDispatcher
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche.	Object
		showDropIndicator(dropLocation:DropLocation):void Sizes, positions and parents the drop indicator based on the specified drop location.	LayoutBase
		toLocaleString():String Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate.	Object
		toString():String Restituisce la rappresentazione in formato stringa dell'oggetto specificato.	Object
		updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void [override] Adjusts the display to show the currently selected item.	StackLayout
		updateScrollRect(w:Number, h:Number):void Called by the target at the end of its updateDisplayList to have the layout update its scrollRect.	LayoutBase
		valueOf():Object Restituisce il valore di base dell'oggetto specificato.	Object
		willTrigger(type:String):Boolean Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.	OnDemandEventDispatcher

Metodi protetti

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	Metodo		Definito da
		calculateDragScrollDelta(dropLocation:DropLocation, elapsedTime:Number):Point Calculates how much to scroll for the specified dropLocation during a drag and drop gesture.	LayoutBase
		calculateDropIndex(x:Number, y:Number):int Returns the index where a new item should be inserted if the user releases the mouse at the specified coordinates while completing a drag and drop gesture.	LayoutBase
		calculateDropIndicatorBounds(dropLocation:DropLocation):Rectangle Calculates the bounds for the drop indicator that provides visual feedback to the user of where the items will be inserted at the end of a drag and drop gesture.	LayoutBase
		getElementBoundsAboveScrollRect(scrollRect:Rectangle):Rectangle Returns the bounds of the first layout element that either spans or is above the scrollRect's top edge.	LayoutBase
		getElementBoundsBelowScrollRect(scrollRect:Rectangle):Rectangle Returns the bounds of the first layout element that either spans or is below the scrollRect's bottom edge.	LayoutBase
		getElementBoundsLeftOfScrollRect(scrollRect:Rectangle):Rectangle Returns the bounds of the first layout element that either spans or is to the left of the scrollRect's left edge.	LayoutBase
		getElementBoundsRightOfScrollRect(scrollRect:Rectangle):Rectangle Returns the bounds of the first layout element that either spans or is to the right of the scrollRect's right edge.	LayoutBase
		getScrollRect():Rectangle Returns the bounds of the target's scroll rectangle in layout coordinates.	LayoutBase
		scrollPositionChanged():void Called when the verticalScrollPosition or horizontalScrollPosition properties change.	LayoutBase

Descrizione delle proprietà

layoutTarget

proprietà

layoutTarget:GroupBase [sola lettura]

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Adobe Digital Enterprise Platform Experience Services - Composite Application Framework 10

Versioni runtime:

AIR 2.6, Flash Player 10.2

The Group for which the layout is working (arranging and sizing its children).

Implementazione
public function get layoutTarget():GroupBase

selectedIndex

proprietà

selectedIndex:int

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Adobe Digital Enterprise Platform Experience Services - Composite Application Framework 10

Versioni runtime:

AIR 2.6, Flash Player 10.2

The index of the currently selected element of the group target.

Questa proprietà può essere utilizzata come origine per l’associazione di dati. Quando questa proprietà viene modificata, invia l’evento selectedIndexChanged .

Implementazione
public function get selectedIndex():int
public function set selectedIndex(value:int):void

Descrizione della funzione di costruzione

()

Funzione di costruzione

public function StackLayout()

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Adobe Digital Enterprise Platform Experience Services - Composite Application Framework 10

Versioni runtime:

AIR 2.6, Flash Player 10.2

Constructor

Descrizione dei metodi

elementAdded

()

metodo

override public function elementAdded(index:int):void

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Adobe Digital Enterprise Platform Experience Services - Composite Application Framework 10

Versioni runtime:

AIR 2.6, Flash Player 10.2

Intercepts the element being added and resizes it to take up the entire space of the layout. If the index matches the selectedIndex, the element is made visible as well.

Parametri

index:int — The index of the element being added.

elementRemoved

()

metodo

override public function elementRemoved(index:int):void

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Adobe Digital Enterprise Platform Experience Services - Composite Application Framework 10

Versioni runtime:

AIR 2.6, Flash Player 10.2

Removes the given element from the layout and adjusts the selectedIndex if the element being removed as the currently selected element.

Parametri

index:int — The index of the element being removed.

updateDisplayList

()

metodo

override public function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Adobe Digital Enterprise Platform Experience Services - Composite Application Framework 10

Versioni runtime:

AIR 2.6, Flash Player 10.2

Adjusts the display to show the currently selected item.

Parametri

	`unscaledWidth:Number` — The actual width of the target group.

	`unscaledHeight:Number` — The actual height of the target group.

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StackLayout - AS3 ADEP Composite Application

Classi x

layoutTarget

selectedIndex

StackLayout

elementAdded

elementRemoved

updateDisplayList