IndexChangedEvent

套件	mx.events
類別	public class IndexChangedEvent
繼承	IndexChangedEvent Event Object

語言版本:

ActionScript 3.0

產品版本:

Flex 3

執行階段版本:

Flash Player 9, AIR 1.1

The IndexChangedEvent class represents events that are dispatched when an index changes. This event can indicate that the index value of a child of a container changed, the displayed child of a navigator container such as an Accordion or ViewStack changed, or the order of column headers in a DataGrid control changed.

相關 API 元素

mx.core.Container

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
		eventPhase : uint [唯讀] 事件流程中的目前階段。	Event
		newIndex : Number The zero-based index after the change.	IndexChangedEvent
		oldIndex : Number The zero-based index before the change.	IndexChangedEvent
		relatedObject : DisplayObject The child object whose index changed, or the object associated with the new index.	IndexChangedEvent
		target : Object [唯讀] 事件目標。	Event
		triggerEvent : Event The event that triggered this event.	IndexChangedEvent
		type : String [唯讀] 事件類型。	Event

公用方法

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	方法		定義自
		IndexChangedEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, relatedObject:DisplayObject = null, oldIndex:Number = -1, newIndex:Number = -1, triggerEvent:Event = null) Constructor.	IndexChangedEvent
		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
		CHANGE : String = "change" [靜態] The IndexChangedEvent.CHANGE constant defines the value of the type property of the event object for a change event, which indicates that an index has changed, such as when and Accordion control changes the displayed panel or a ViewStack changes views.	IndexChangedEvent
		CHILD_INDEX_CHANGE : String = "childIndexChange" [靜態] The IndexChangedEvent.CHILD_INDEX_CHANGE constant defines the value of the type property of the event object for a childIndexChange event, which indicates that a component's index among a container's children has changed.	IndexChangedEvent
		HEADER_SHIFT : String = "headerShift" [靜態] The IndexChangedEvent.HEADER_SHIFT constant defines the value of the type property of the event object for a headerShift event, which indicates that a header has changed its index, as when a user drags a DataGrid column to a new position.	IndexChangedEvent

屬性詳細資訊

newIndex

屬性

public var newIndex:Number

語言版本:

ActionScript 3.0

產品版本:

Flex 3

執行階段版本:

Flash Player 9, AIR 1.1

The zero-based index after the change. For change events it is the index of the current child. For childIndexChange events, it is the new index of the child. For headerShift events, it is the new index of the header.

oldIndex

屬性

public var oldIndex:Number

語言版本:

ActionScript 3.0

產品版本:

Flex 3

執行階段版本:

Flash Player 9, AIR 1.1

The zero-based index before the change. For change events it is the index of the previous child. For childIndexChange events, it is the previous index of the child. For headerShift events, it is the previous index of the header.

relatedObject

屬性

public var relatedObject:DisplayObject

語言版本:

ActionScript 3.0

產品版本:

Flex 3

執行階段版本:

Flash Player 9, AIR 1.1

The child object whose index changed, or the object associated with the new index. This property is not set for header changes.

triggerEvent

屬性

public var triggerEvent:Event

語言版本:

ActionScript 3.0

產品版本:

Flex 3

執行階段版本:

Flash Player 9, AIR 1.1

The event that triggered this event. Indicates whether this event was caused by a mouse or keyboard interaction. The value is null when a container dispatches a childIndexChanged event.

建構函式詳細資料

()

建構函式

public function IndexChangedEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, relatedObject:DisplayObject = null, oldIndex:Number = -1, newIndex:Number = -1, triggerEvent:Event = null)

語言版本:

ActionScript 3.0

產品版本:

Flex 3

執行階段版本:

Flash Player 9, AIR 1.1

Constructor. Normally called by a Flex control and not used in application code.

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.

	`relatedObject:DisplayObject` (default = `null`) — The child object associated with the index change.

	`oldIndex:Number` (default = `-1`) — The zero-based index before the change.

	`newIndex:Number` (default = `-1`) — The zero-based index after the change.

	`triggerEvent:Event` (default = `null`) — The event that triggered this event.

常數詳細資訊

CHANGE

常數

public static const CHANGE:String = "change"

語言版本:

ActionScript 3.0

產品版本:

Flex 3

執行階段版本:

Flash Player 9, AIR 1.1

The IndexChangedEvent.CHANGE constant defines the value of the type property of the event object for a change event, which indicates that an index has changed, such as when and Accordion control changes the displayed panel or a ViewStack changes views.

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`.
`inputType`	Indicates whether this event was caused by a mouse or keyboard interaction.
`newIndex`	The zero-based index after the change.
`oldIndex`	The zero-based index before the change.
`relatedObject`	Contains a reference to the child object that corresponds to the new index.
`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.
`TriggerEvent`	The event that triggered this event.
`Type`	IndexChangedEvent.CHANGE

CHILD_INDEX_CHANGE

常數

public static const CHILD_INDEX_CHANGE:String = "childIndexChange"

語言版本:

ActionScript 3.0

產品版本:

Flex 3

執行階段版本:

Flash Player 9, AIR 1.1

The IndexChangedEvent.CHILD_INDEX_CHANGE constant defines the value of the type property of the event object for a childIndexChange event, which indicates that a component's index among a container's children has changed.

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`.
`inputType`	Indicates whether this event was caused by a mouse or keyboard interaction.
`newIndex`	The zero-based index of the child after the change.
`oldIndex`	The zero-based index of the child before the change.
`relatedObject`	Contains a reference to the child object whose index changed.
`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.
`TriggerEvent`	null
`Type`	IndexChangedEvent.CHILD_INDEX_CHANGE

HEADER_SHIFT

常數

public static const HEADER_SHIFT:String = "headerShift"

語言版本:

ActionScript 3.0

產品版本:

Flex 3

執行階段版本:

Flash Player 9, AIR 1.1

The IndexChangedEvent.HEADER_SHIFT constant defines the value of the type property of the event object for a headerShift event, which indicates that a header has changed its index, as when a user drags a DataGrid column to a new position.

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`.
`inputType`	Indicates whether this event was caused by a mouse or keyboard interaction.
`newIndex`	The zero-based index of the header after the change.
`oldIndex`	The zero-based index of the header before the change.
`relatedObject`	null
`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.
`TriggerEvent`	The event that triggered this event.
`Type`	IndexChangedEvent.HEADER_SHIFT

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IndexChangedEvent - AS3 Flex

類別 x

newIndex

oldIndex

relatedObject

triggerEvent