Transition

套件	mx.states
類別	public class Transition
繼承	Transition 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 Transition class defines a set of effects that play in response to a change of view state. While a view state definition defines how to change states, a transition defines the order in which visual changes occur during the state change.

To define a transition, you set the transitions property of an Application to an Array of Transition objects.

You use the toState and fromState properties of the Transition class to specify the state changes that trigger the transition. By default, both the fromState and toState properties are set to "*", meaning apply the transition to any changes to the view state.

You can use the fromState property to explicitly specify a view state that your are changing from, and the toState property to explicitly specify a view state that you are changing to. If a state change matches two transitions, the toState property takes precedence over the fromState property. If more than one transition match, Flex uses the first definition in the transition array.

You use the effect property to specify the Effect object to play when you apply the transition. Typically, this is a composite effect object, such as the Parallel or Sequence effect, that contains multiple effects, as the following example shows:

 
  <mx:Transition id="myTransition" fromState="*" toState="*">
    <mx:Parallel>
        ...
    </mx:Parallel>
  </mx:Transition>

MXML 語法

隱藏 MXML 語法

The <mx:Transition> tag defines the following attributes:

  <mx:Transition
    Properties
    id="ID"
    effect=""
    fromState="*"
    toState="*"
    autoReverse="false"
  />

預設 MXML 屬性effect

檢視範例

公用屬性

隱藏繼承公用屬性

顯示繼承公用屬性

	屬性		定義自
		autoReverse : Boolean = false Set to true to specify that this transition applies to both the forward and reverse view state changes.	Transition
		constructor : Object 類別物件的參照或是特定物件實體的建構函數。	Object
		effect : IEffect The IEffect object to play when you apply the transition.	Transition
		fromState : String = "*" A String specifying the view state that your are changing from when you apply the transition.	Transition
		interruptionBehavior : String = "end" Flex does not support the playing of multiple transitions simultaneously.	Transition
		toState : String = "*" A String specifying the view state that you are changing to when you apply the transition.	Transition

公用方法

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	方法		定義自
		Transition() Constructor.	Transition
		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
		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

屬性詳細資訊

autoReverse

屬性

public var autoReverse:Boolean = false

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

Set to true to specify that this transition applies to both the forward and reverse view state changes. Therefore, use this transition on a change from view state A to view state B, and on the change from B to A.

While the transition from view state A to view state B is playing, the reverse transition can occur to interrupt the current transition. The reverse transition always halts the current transition at its current location. That is, the reverse transition always plays as if the interruptionBehavior property was set to stop, regardless of the real value of interruptionBehavior.

This property is only checked when the new transition is going in the exact opposite direction of the currently playing one. That is, if a transition is playing between states A and B and then a transition to return to A is started.

If a transition uses the toState and fromState properties to explicitly handle the transition from view state B to A, then Flex ignores the autoReverse property.

預設值為 false。

相關 API 元素

Transition.interruptionBehavior

effect

屬性

public var effect:IEffect

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 IEffect object to play when you apply the transition. Typically, this is a composite effect object, such as the Parallel or Sequence effect, that contains multiple effects.

The effect property is the default property of the Transition class. You can omit the <mx:effect> tag if you use MXML tag syntax.

fromState

屬性

public var fromState: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

A String specifying the view state that your are changing from when you apply the transition. The default value is "*", meaning any view state.

You can set this property to an empty string, "", which corresponds to the base view state.

預設值為 "*"。

interruptionBehavior

屬性

public var interruptionBehavior:String = "end"

語言版本:

ActionScript 3.0

產品版本:

Flex 4.5

執行階段版本:

Flash Player 10.2, AIR 2.5

Flex does not support the playing of multiple transitions simultaneously. If a transition is currently playing when a new transition occurs, the current transition is interrupted. This property controls how the current transition behaves when interrupted.

By default, the current transition ends, which snaps all effects in the transition to their end values. This corresponds to a property value of end. If the value of this property is stop, the current transition halts at its current location. The new transition start playing from the halt location of the previous transition.

The value of stop can smooth out the appearance of an interrupted transition. That is because the user does not see the current transition snap to its end state before the new transition begins.

In some cases, the interrupting transition can be the reverse of the current transition. For example, while the transition from view state A to view state B is playing, the reverse transition occurs to interrupt the current transition. If you set the autoReverse property of a transition instance to true, you can use the same transition to handle both the forward and reverse transitions. When the interrupting transition is the reverse transition of the current transition and has autoReverse set to true, the interrupting transition runs as if the interruptionBehavior property was set to stop, regardless of the real value of interruptionBehavior.

The mx.states.InterruptionBehavior class defines the possible values for this property.

預設值為 end。

toState

屬性

public var toState: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

A String specifying the view state that you are changing to when you apply the transition. The default value is "*", meaning any view state.

You can set this property to an empty string, "", which corresponds to the base view state.

預設值為 "*"。

建構函式詳細資料

()

建構函式

public function Transition()

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.

範例如何使用本範例

TransitionExample.mxml

<?xml version="1.0" ?>
<!-- Simple example to demonstrate the Transition class. -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:s="library://ns.adobe.com/flex/spark"
    xmlns:mx="library://ns.adobe.com/flex/mx" currentState="Login">
 
    <!-- Define the view states -->
    <s:states>
        <s:State name="Login" />
        <s:State name="Register" />
    </s:states>

    <s:transitions>
        <!-- Define the transition from the base state to the Register state.-->
        <s:Transition id="toRegister" fromState="*" toState="Register">
            <s:Sequence targets="{[loginPanel, registerLink, confirm, loginLink]}">
                <s:RemoveAction />
                <s:Fade />
                <s:SetAction target="{loginPanel}" property="title" />
                <s:SetAction target="{loginButton}" property="label" />
                <s:SetAction target="{loginButton}" property="color" />
                <s:Resize target="{loginPanel}"/>
                <s:AddAction />
                <s:Fade />
            </s:Sequence>
        </s:Transition>

        <!-- Define the transition from the Register state to the base state.-->
        <s:Transition id="toDefault" fromState="Register" toState="*">
            <s:Sequence targets="{[loginPanel, registerLink, 
                    confirm, loginLink]}">
                <s:RemoveAction/>
                <s:SetAction target="{loginPanel}" property="title"/>
                <s:SetAction  target="{loginButton}" property="label"/>
                <s:SetAction target="{loginButton}" property="color"/>
                <s:Resize target="{loginPanel}"/>
                <s:AddAction/>
            </s:Sequence>
        </s:Transition>
    </s:transitions>

    <!-- Define a Panel container that defines the login form. The title of the Panel
         changes depending on the state. -->
    <s:Panel title="Login" title.Register="Register" id="loginPanel" 
            width="75%" horizontalCenter="0" verticalCenter="0">
    <s:controlBarLayout >
        <s:BasicLayout />
    </s:controlBarLayout>
    <s:layout>
        <s:VerticalLayout paddingTop="10" paddingBottom="10" paddingRight="10" paddingLeft="10" />
    </s:layout>
        <s:Label color="blue" width="100%"
            text="Click the 'Need to Register?' link to change state. Click the 'Return to Login' link to return to the base state."/>

        <!-- The following form has  two TextInputs in the Login state and three TextInputs
             in the Register state. -->
        <s:Form id="loginForm" >
            <s:FormItem label="Username:">
                <s:TextInput/>
            </s:FormItem>
            <s:FormItem label="Password:">
                <s:TextInput/>
            </s:FormItem>
            <s:FormItem id="confirm" label="Confirm:" includeIn="Register" includeInLayout="false" includeInLayout.Register="true">
                <s:TextInput/>
            </s:FormItem>
        </s:Form>
       
        <!-- The controlBar includes two visible items in each state. Which LinkButton is visible is determined
             by the state -->
        <s:controlBarContent>
            <mx:LinkButton id="registerLink"  label="Need to Register?" top="10" bottom="10"
                click="currentState='Register'" left="10" includeIn="Login" />
            <mx:LinkButton id="loginLink" label="Return to Login" click="currentState=''" includeIn="Register" left="10"  top="10" bottom="10"/>
            <s:Button label="Login" label.Register="Register" id="loginButton" right="10" color.Register="0x0000FF"  top="10" bottom="10"/>
        </s:controlBarContent>
    </s:Panel>
</s:Application>

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Transition - AS3 Flex

類別 x

autoReverse

effect

fromState

interruptionBehavior

toState

Transition