MenuEvent

Pacchetto	mx.events
Classe	public class MenuEvent
Ereditarietà	MenuEvent ListEvent Event Object

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The MenuEvent class represents events that are associated with menu activities in controls such as Menu, MenuBar, and PopUpMenuButton.

Elementi API correlati

mx.controls.Menu
mx.controls.MenuBar
mx.controls.PopUpMenuButton

Proprietà pubbliche

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	Proprietà		Definito da
		bubbles : Boolean [sola lettura] Indica se un evento è un evento di bubbling.	Event
		cancelable : Boolean [sola lettura] Indica se il comportamento associato all'evento può essere impedito.	Event
		columnIndex : int The zero-based index of the column that contains the item renderer where the event occurred.	ListEvent
		constructor : Object Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto.	Object
		currentTarget : Object [sola lettura] L'oggetto che elabora attivamente l'oggetto Event con un listener di eventi.	Event
		eventPhase : uint [sola lettura] La fase attuale del flusso di eventi.	Event
		index : int The index of the associated menu item within its parent menu or submenu.	MenuEvent
		item : Object The specific item in the dataProvider.	MenuEvent
		itemRenderer : IListItemRenderer The item renderer where the event occurred.	ListEvent
		label : String The label text of the associated menu item.	MenuEvent
		menu : Menu The specific Menu instance associated with the event, such as the menu or submenu that was hidden or opened.	MenuEvent
		menuBar : MenuBar The MenuBar instance that is the parent of the selected Menu control, or null when the target Menu control is not parented by a MenuBar control.	MenuEvent
		reason : String The reason the itemEditEnd event was dispatched.	ListEvent
		rowIndex : int In the zero-based index of the row that contains the item renderer where the event occured, or for editing events, the index of the item in the data provider that is being edited.	ListEvent
		target : Object [sola lettura] Il target dell'evento.	Event
		type : String [sola lettura] Il tipo di evento.	Event

Metodi pubblici

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	Metodo		Definito da
		MenuEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = true, menuBar:MenuBar = null, menu:Menu = null, item:Object = null, itemRenderer:IListItemRenderer = null, label:String = null, index:int = -1) Constructor.	MenuEvent
		clone():Event Duplica un'istanza di una sottoclasse Event.	Event
		formatToString(className:String, ... arguments):String Una funzione dell'utilità per l'implementazione del metodo toString() in classi Event ActionScript 3.0 personalizzate.	Event
		hasOwnProperty(name:String):Boolean Indica se per un oggetto è definita una proprietà specifica.	Object
		isDefaultPrevented():Boolean Verifica se sull'evento è stato chiamato il metodo preventDefault().	Event
		isPrototypeOf(theClass:Object):Boolean Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro.	Object
		preventDefault():void Annulla il comportamento predefinito di un evento se tale comportamento può essere annullato.	Event
		propertyIsEnumerable(name:String):Boolean Indica se la proprietà specificata esiste ed è enumerabile.	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche.	Object
		stopImmediatePropagation():void Impedisce l'elaborazione di tutti i listener di eventi nel nodo corrente e in tutti i nodi successivi del flusso di eventi.	Event
		stopPropagation():void Impedisce l'elaborazione di tutti i listener di eventi nei nodi del flusso di eventi successivi a quello corrente.	Event
		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 una stringa che contiene tutte le proprietà dell'oggetto Event.	Event
		valueOf():Object Restituisce il valore di base dell'oggetto specificato.	Object

Costanti pubbliche

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	Costante		Definito da
		CHANGE : String = "change" [statico] The MenuEvent.CHANGE event type constant indicates that selection changed as a result of user interaction.	MenuEvent
		ITEM_CLICK : String = "itemClick" [statico] The MenuEvent.ITEM_CLICK event type constant indicates that the user selected a menu item.	MenuEvent
		ITEM_ROLL_OUT : String = "itemRollOut" [statico] The MenuEvent.ITEM_ROLL_OUT type constant indicates that the mouse pointer rolled out of a menu item.	MenuEvent
		ITEM_ROLL_OVER : String = "itemRollOver" [statico] The MenuEvent.ITEM_ROLL_OVER type constant indicates that the mouse pointer rolled over a menu item.	MenuEvent
		MENU_HIDE : String = "menuHide" [statico] The MenuEvent.MENU_HIDE event type constant indicates that a menu or submenu closed.	MenuEvent
		MENU_SHOW : String = "menuShow" [statico] The MenuEvent.MENU_SHOW type constant indicates that the mouse pointer rolled a menu or submenu opened.	MenuEvent

Descrizione delle proprietà

index

proprietà

public var index:int

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The index of the associated menu item within its parent menu or submenu. This is -1 for the menuShow and menuHide events.

item

proprietà

public var item:Object

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The specific item in the dataProvider. This is null for the menuShow and menuHide events.

label

proprietà

public var label:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The label text of the associated menu item. This is null for the menuShow and menuHide events.

menuBar

proprietà

public var menuBar:MenuBar

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The MenuBar instance that is the parent of the selected Menu control, or null when the target Menu control is not parented by a MenuBar control.

Descrizione della funzione di costruzione

()

Funzione di costruzione

public function MenuEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = true, menuBar:MenuBar = null, menu:Menu = null, item:Object = null, itemRenderer:IListItemRenderer = null, label:String = null, index:int = -1)

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Constructor. Normally called by the Menu object.

Parametri

	`type:String` — The event type; indicates the action that caused the event.

	`bubbles:Boolean` (default = `false`) — Specifies whether the event can bubble up the display list hierarchy.

	`cancelable:Boolean` (default = `true`) — Specifies whether the behavior associated with the event can be prevented.

	`menuBar:MenuBar` (default = `null`) — The MenuBar instance that is the parent of the selected Menu control, or null when the target Menu control is not parented by a MenuBar control.

	`menu:Menu` (default = `null`) — The specific Menu instance associated with the event, such as the menu or submenu that was hidden or opened. This property is null if a MenuBar item dispatches the event.

	`item:Object` (default = `null`) — The item in the dataProvider of the associated menu item.

	`itemRenderer:IListItemRenderer` (default = `null`) — The ListItemRenderer of the associated menu item.

	`label:String` (default = `null`) — The label text of the associated menu item.

	`index:int` (default = `-1`) — The index in the menu of the associated menu item.

Descrizione delle costanti

CHANGE

Costante

public static const CHANGE:String = "change"

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The MenuEvent.CHANGE event type constant indicates that selection changed as a result of user interaction.

The properties of the event object for this event type have the following values. Not all properties are meaningful for all kinds of events. See the detailed property descriptions for more information.

Property	Value
`bubbles`	false
`cancelable`	true
`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`.
`index`	The index in the menu of the selected menu item.
`item`	The item in the dataProvider that was selected.
`itemRenderer`	The item renderer of the selected menu item.
`label`	The label text of the selected menu item.
`menu`	The specific Menu instance associated with this event, or `null` if a MenuBar item is dispatching the event.
`menuBar`	The MenuBar instance that is the parent of the Menu control, or `null` if the Menu control is not parented by a MenuBar control.
`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.
`type`	MenuEvent.CHANGE

ITEM_CLICK

Costante

public static const ITEM_CLICK:String = "itemClick"

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The MenuEvent.ITEM_CLICK event type constant indicates that the user selected a menu item.

Property	Value
`bubbles`	false
`cancelable`	true
`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`.
`index`	The index in the menu of the selected menu item.
`item`	The item in the dataProvider that was selected.
`itemRenderer`	The ListItemRenderer of the selected menu item.
`label`	The label text of the selected menu item.
`menu`	The specific Menu instance associated with this event, or `null` if a MenuBar item is dispatching the event.
`menuBar`	The MenuBar instance that is the parent of the Menu control, or `null` if the Menu control is not parented by a MenuBar control.
`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.
`type`	MenuEvent.ITEM_CLICK

ITEM_ROLL_OUT

Costante

public static const ITEM_ROLL_OUT:String = "itemRollOut"

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The MenuEvent.ITEM_ROLL_OUT type constant indicates that the mouse pointer rolled out of a menu item.

Property	Value
`bubbles`	false
`cancelable`	true
`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`.
`index`	The index in the menu of the menu item that was rolled out of.
`item`	The item in the dataProvider corresponding to the menu item that was rolled out of.
`itemRenderer`	The ListItemRenderer of the menu item that was rolled out of.
`label`	The label text of the menu item that was rolled out of.
`menu`	The specific Menu instance associated with this event, or `null` if a MenuBar item is dispatching the event.
`menuBar`	The MenuBar instance that is the parent of the Menu control, or `null` if the Menu control is not parented by a MenuBar control.
`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.
`type`	MenuEvent.ITEM_ROLL_OUT

ITEM_ROLL_OVER

Costante

public static const ITEM_ROLL_OVER:String = "itemRollOver"

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The MenuEvent.ITEM_ROLL_OVER type constant indicates that the mouse pointer rolled over a menu item.

Property	Value
`bubbles`	false
`cancelable`	true
`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`.
`index`	The index in the menu of the menu item that was rolled over.
`item`	The item in the dataProvider associated with the rolled over menu item.
`itemRenderer`	The ListItemRenderer of the menu item that was rolled over.
`label`	The label text of the menu item that was rolled over.
`menu`	The specific Menu instance associated with this event, or `null` if a MenuBar item is dispatching the event.
`menuBar`	The MenuBar instance that is the parent of the Menu control, or `null` if the Menu control is not parented by a MenuBar control.
`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.
`type`	MenuEvent.ITEM_ROLL_OVER

MENU_HIDE

Costante

public static const MENU_HIDE:String = "menuHide"

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The MenuEvent.MENU_HIDE event type constant indicates that a menu or submenu closed.

Property	Value
`bubbles`	false
`cancelable`	true
`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`.
`index`	-1. This property is not set for this type of event.
`item`	null. This property is not set for this type of event.
`itemRenderer`	null. This property is not set for this type of event.
`label`	null. This property is not set for this type of event.
`menu`	The specific Menu instance associated with this event, or `null` if a MenuBar item is dispatching the event.
`menuBar`	The MenuBar instance that is the parent of the Menu control, or `null` if the Menu control is not parented by a MenuBar control.
`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.
`type`	MenuEvent.MENU_HIDE

MENU_SHOW

Costante

public static const MENU_SHOW:String = "menuShow"

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The MenuEvent.MENU_SHOW type constant indicates that the mouse pointer rolled a menu or submenu opened.

Property	Value
`bubbles`	false
`cancelable`	true
`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`.
`index`	-1. This property is not set for this type of event.
`item`	null. This property is not set for this type of event.
`itemRenderer`	null. This property is not set for this type of event.
`label`	`null. This property is not set for this type of event.`
`menu`	The specific Menu instance associated with this event, or `null` if a MenuBar item is dispatching the event.
`menuBar`	The MenuBar instance that is the parent of the Menu control, or `null` if the Menu control is not parented by a MenuBar control.
`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.
`type`	MenuEvent.MENU_SHOW

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MenuEvent - AS3 Flex

Classi x

index

item

label

menu

menuBar

MenuEvent

CHANGE

ITEM_CLICK

ITEM_ROLL_OUT

ITEM_ROLL_OVER

MENU_HIDE

MENU_SHOW