State

套件	mx.states
類別	public class State
繼承	State EventDispatcher 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 State class defines a view state, a particular view of a component. For example, a product thumbnail could have two view states; a base view state with minimal information, and a rich view state with additional information. The overrides property specifies a set of child classes to add or remove from the base view state, and properties, styles, and event handlers to set when the view state is in effect.

You use the State class in the states property of Flex components. You can only specify a states property at the root of an application or a custom control, not on child controls.

You enable a view state by setting a component's currentState property.

MXML 語法

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The <mx:State> tag has the following attributes:

  <mx:State
  Properties
  basedOn="null"
  name="null"
  overrides="null"
  />

預設 MXML 屬性overrides

公用屬性

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	屬性		定義自
		basedOn : String The name of the view state upon which this view state is based, or null if this view state is not based on a named view state.	State
		constructor : Object 類別物件的參照或是特定物件實體的建構函數。	Object
		name : String The name of the view state.	State
		overrides : Array The overrides for this view state, as an Array of objects that implement the IOverride interface.	State
		stateGroups : Array The state groups that this view state belongs to as an array of String.	State

公用方法

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	方法		定義自
		State(properties:Object = null) Constructor.	State
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void 會在 EventDispatcher 物件註冊事件偵聽程式，以便讓偵聽程式收到事件的通知。	EventDispatcher
		dispatchEvent(event:Event):Boolean 會將事件傳送到事件流程。	EventDispatcher
		hasEventListener(type:String):Boolean 會檢查 EventDispatcher 物件是否有對特定的事件類型註冊偵聽程式。	EventDispatcher
		hasOwnProperty(name:String):Boolean 指出物件是否有已定義的指定屬性。	Object
		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
		propertyIsEnumerable(name:String):Boolean 指出指定的屬性是否存在，以及是否可列舉。	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void 會從 EventDispatcher 物件移除偵聽程式。	EventDispatcher
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void 為迴圈作業設定動態屬性的可用性。	Object
		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 會傳回指定之物件的字串形式。	Object
		valueOf():Object 會傳回指定之物件的基本值。	Object
		willTrigger(type:String):Boolean 檢查此 EventDispatcher 物件是否已註冊事件偵聽程式，或者此物件的任何祖系已為特定事件類型註冊事件偵聽程式。	EventDispatcher

事件

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	摘要	定義自
activate	[廣播事件] 當 Flash Player 或 AIR 應用程式取得作業系統焦點並成為作用中時傳送。	EventDispatcher
deactivate	[廣播事件] 當 Flash Player 或 AIR 應用程式失去作業系統焦點並成為非作用中時傳送。	EventDispatcher
enterState	Dispatched after a view state has been entered.	State
exitState	Dispatched just before a view state is exited.	State

屬性詳細資訊

basedOn

屬性

public var basedOn:String

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 name of the view state upon which this view state is based, or null if this view state is not based on a named view state. If this value is null, the view state is based on a root state that consists of the properties, styles, event handlers, and children that you define for a component without using a State class.

預設值為 null。

name

屬性

public var name:String

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 name of the view state. State names must be unique for a given component. This property must be set.

overrides

屬性

public var overrides:Array

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 overrides for this view state, as an Array of objects that implement the IOverride interface. These overrides are applied in order when the state is entered, and removed in reverse order when the state is exited.

The following Flex classes implement the IOverride interface and let you define the view state characteristics:

AddChild
RemoveChild
SetEventHandler
SetProperty
SetStyle

The overrides property is the default property of the State class. You can omit the <mx:overrides> tag and its child <mx:Array>tag if you use MXML tag syntax to define the overrides.

stateGroups

屬性

public var stateGroups:Array

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 state groups that this view state belongs to as an array of String.

建構函式詳細資料

()

建構函式

public function State(properties:Object = 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.

參數

properties:Object (default = null) — Object containing property settings for this State.

事件詳細資訊

enterState

事件

事件物件類型: mx.events.FlexEvent
屬性 FlexEvent.type = mx.events.FlexEvent.ENTER_STATE

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

Dispatched after a view state has been entered.

The FlexEvent.ENTER_STATE constant defines the value of the type property of the event object for a enterState event.

This event will only be dispatched when there are one or more relevant listeners attached to the dispatching object.

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`.
`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.

exitState

事件

事件物件類型: mx.events.FlexEvent
屬性 FlexEvent.type = mx.events.FlexEvent.EXIT_STATE

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

Dispatched just before a view state is exited. This event is dispatched before the changes to the default view state have been removed.

The FlexEvent.EXIT_STATE constant defines the value of the type property of the event object for a exitState event.

This event will only be dispatched when there are one or more relevant listeners attached to the dispatching object.

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`.
`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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State - AS3 Flex

套件x

語言元素

附錄

套件 mx.states

basedOn

name

overrides

stateGroups

State

enterState

exitState