ElementExistenceEvent

套件	spark.events
類別	public class ElementExistenceEvent
繼承	ElementExistenceEvent Event Object

語言版本:

ActionScript 3.0

產品版本:

Flex 4

執行階段版本:

Flash Player 10, AIR 1.5

The ElementExistenceEvent class represents events that are dispatched when an element of a Group is created or destroyed.

相關 API 元素

spark.components.Group

公用屬性

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	屬性		定義自
		bubbles : Boolean [唯讀] 指出事件是否為反昇事件。	Event
		cancelable : Boolean [唯讀] 指出是否可避免與事件相關聯的行為指令。	Event
		constructor : Object 類別物件的參照或是特定物件實體的建構函數。	Object
		currentTarget : Object [唯讀] 正主動使用事件偵聽程式處理 Event 物件的物件。	Event
		element : IVisualElement Reference to the visual element that was added or removed.	ElementExistenceEvent
		eventPhase : uint [唯讀] 事件流程中的目前階段。	Event
		index : int The index where the element was added or removed.	ElementExistenceEvent
		target : Object [唯讀] 事件目標。	Event
		type : String [唯讀] 事件類型。	Event

公用方法

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	方法		定義自
		ElementExistenceEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, element:IVisualElement = null, index:int = -1) Constructor.	ElementExistenceEvent
		clone():Event 複製 Event 子類別的實體。	Event
		formatToString(className:String, ... arguments):String 公用程式函數，可用來實作自訂 ActionScript 3.0 Event 類別中的 toString() 方法。	Event
		hasOwnProperty(name:String):Boolean 指出物件是否有已定義的指定屬性。	Object
		isDefaultPrevented():Boolean 檢查是否已經對事件呼叫 preventDefault() 方法。	Event
		isPrototypeOf(theClass:Object):Boolean 指出 Object 類別的實體是否位於指定為參數的物件原型鏈中。	Object
		preventDefault():void 如果可以取消事件的預設行為指令，則取消該行為指令。	Event
		propertyIsEnumerable(name:String):Boolean 指出指定的屬性是否存在，以及是否可列舉。	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void 為迴圈作業設定動態屬性的可用性。	Object
		stopImmediatePropagation():void 避免處理事件流程中，目前節點以及任何後續節點中的任何事件偵聽程式。	Event
		stopPropagation():void 避免處理接續在事件流程中的目前節點之後，後續節點中的任何事件偵聽程式。	Event
		toLocaleString():String 傳回代表此物件的字串，根據地區特定慣例進行格式化。	Object
		toString():String 傳回包含 Event 物件所有屬性的字串。	Event
		valueOf():Object 會傳回指定之物件的基本值。	Object

公用常數

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	常數		定義自
		ELEMENT_ADD : String = "elementAdd" [靜態] The ElementExistenceEvent.ELEMENT_ADD constant defines the value of the type property of the event object for an elementAdd event.	ElementExistenceEvent
		ELEMENT_REMOVE : String = "elementRemove" [靜態] The ElementExistenceEvent.ELEMENT_REMOVE constant defines the value of the type property of the event object for an elementRemove event.	ElementExistenceEvent

屬性詳細資訊

element

屬性

public var element:IVisualElement

語言版本:

ActionScript 3.0

產品版本:

Flex 4

執行階段版本:

Flash Player 10, AIR 1.5

Reference to the visual element that was added or removed.

index

屬性

public var index:int

語言版本:

ActionScript 3.0

產品版本:

Flex 4

執行階段版本:

Flash Player 10, AIR 1.5

The index where the element was added or removed.

建構函式詳細資料

()

建構函式

public function ElementExistenceEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, element:IVisualElement = null, index:int = -1)

語言版本:

ActionScript 3.0

產品版本:

Flex 4

執行階段版本:

Flash Player 10, AIR 1.5

Constructor.

參數

	`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 = `false`) — Specifies whether the behavior associated with the event can be prevented.

	`element:IVisualElement` (default = `null`) — Reference to the element that was added or removed.

	`index:int` (default = `-1`) — The index where the element was added or removed.

常數詳細資訊

ELEMENT_ADD

常數

public static const ELEMENT_ADD:String = "elementAdd"

語言版本:

ActionScript 3.0

產品版本:

Flex 4

執行階段版本:

Flash Player 10, AIR 1.5

The ElementExistenceEvent.ELEMENT_ADD constant defines the value of the type property of the event object for an elementAdd 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`.
`element`	Contains a reference to the visual element that was added.
`index`	The index where the visual element 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.

ELEMENT_REMOVE

常數

public static const ELEMENT_REMOVE:String = "elementRemove"

語言版本:

ActionScript 3.0

產品版本:

Flex 4

執行階段版本:

Flash Player 10, AIR 1.5

The ElementExistenceEvent.ELEMENT_REMOVE constant defines the value of the type property of the event object for an elementRemove 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`.
`element`	A reference to the visual element that is about to be removed.
`index`	The index of visual element that is being 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.

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ElementExistenceEvent - AS3 Flex

類別 x

element

index