| 套件 | mx.states |
| 類別 | public class SetEventHandler |
| 繼承 | SetEventHandler  OverrideBase OnDemandEventDispatcher 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 |
You use this class in the overrides property of the State class.
顯示 MXML 語法
隱藏 MXML 語法The <mx:SetEventHanlder> tag
has the following attributes:
<mx:SetEventHandler Properties name="null" handlerFunction="null" target="null" Events handler=No default />
相關 API 元素
| 屬性 | 定義自 | ||
|---|---|---|---|
 | constructor : Object
類別物件的參照或是特定物件實體的建構函數。 | Object | |
| handlerFunction : Function
The handler function for the event. | SetEventHandler | ||
| name : String
The name of the event whose handler is being set. | SetEventHandler | ||
| originalHandlerFunction : Function
The handler function to remove prior to applying our override. | SetEventHandler | ||
| target : Object
The component that dispatches the event. | SetEventHandler | ||
| 方法 | 定義自 | ||
|---|---|---|---|
Constructor. | SetEventHandler | ||
| addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener
receives notification of an event. | OnDemandEventDispatcher | |
[覆寫]
Applies the override. | SetEventHandler | ||
|
Dispatches an event into the event flow. | OnDemandEventDispatcher | |
|
Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | OnDemandEventDispatcher | |
|
指出物件是否有已定義的指定屬性。 | Object | |
|
IOverride interface method; this class implements it as an empty method. | OverrideBase | |
|
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 | |
|
指出指定的屬性是否存在，以及是否可列舉。 | Object | |
[覆寫]
Removes the override. | SetEventHandler | ||
|
Removes a listener from the EventDispatcher object. | OnDemandEventDispatcher | |
|
為迴圈作業設定動態屬性的可用性。 | Object | |
|
傳回代表此物件的字串，根據地區特定慣例進行格式化。 | Object | |
|
會傳回指定之物件的字串形式。 | Object | |
|
會傳回指定之物件的基本值。 | Object | |
|
Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type. | OnDemandEventDispatcher | |
| 事件 | 摘要 | 定義自 | ||
|---|---|---|---|---|
| The event handler function to execute in response to the event that is specified by the name property. | SetEventHandler | |||
handlerFunction | 屬性 |
public var handlerFunction:Function| 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 handler function for the event.
This property is intended for developers who use ActionScript to
create and access view states.
In MXML, you can use the equivalent handler
event attribute; do not use both in a single MXML tag.
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 event whose handler is being set. You must set this property, either in the SetEventHandler constructor or by setting the property value directly.
originalHandlerFunction | 屬性 |
public var originalHandlerFunction:Function| 語言版本: | ActionScript 3.0 |
| 產品版本: | Flex 4.5 |
| 執行階段版本: | Flash Player 9, AIR 1.1 |
The handler function to remove prior to applying our override.
預設值為 null。
target | 屬性 |
public var target: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 component that dispatches the event.
If the property value is null, Flex uses the
immediate parent of the <mx:states> tag.
預設值為 null。
SetEventHandler | () | 建構函式 |
public function SetEventHandler(target:EventDispatcher = null, name:String = 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target:EventDispatcher (default = null) | |
name:String (default = null) |
apply | () | 方法 |
override public function apply(parent:UIComponent):void| 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 |
Applies the override. Flex retains the original value, so that it can
restore the value later in the remove() method.
This method is called automatically when the state is entered. It should not be called directly.
參數
parent:UIComponent — The parent of the state object containing this override.
The override should use this as its target if an explicit target was
not specified.
|
remove | () | 方法 |
override public function remove(parent:UIComponent):void| 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 |
Removes the override. The value remembered in the apply()
method is restored.
This method is called automatically when the state is entered. It should not be called directly.
參數
parent:UIComponent — The parent of the state object containing this override.
The override should use this as its target if an explicit target was
not specified.
|
handler | 事件 |
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 event handler function to execute in response to the event that is
specified by the name property.
Do not specify the handler property and the handlerFunction
property in a single <mx:SetEventHandler> tag.
Flex does not dispatch a handler event.
You use the handler key word only as an MXML attribte.
When you use the handler handler attribute, you can specify a
method that takes multiple parameters, not just the Event object;
also, you can specify the handler code in-line in the MXML tag.
Tue Jun 12 2018, 03:47 PM Z