| 套件 | mx.events |
| 類別 | public class PropertyChangeEvent |
| 繼承 | PropertyChangeEvent  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 |
相關 API 元素
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 | ||
|---|---|---|---|
 | 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 | |
| kind : String
Specifies the kind of change. | PropertyChangeEvent | ||
| newValue : Object
The value of the property after the change. | PropertyChangeEvent | ||
| oldValue : Object
The value of the property before the change. | PropertyChangeEvent | ||
| property : Object
A String, QName, or int specifying the property that changed. | PropertyChangeEvent | ||
| source : Object
The object that the change occured on. | PropertyChangeEvent | ||
| target : Object [唯讀]
事件目標。 | Event | |
| type : String [唯讀]
事件類型。 | Event | |
公用方法
| 方法 | 定義自 | ||
|---|---|---|---|
PropertyChangeEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, kind:String = null, property:Object = null, oldValue:Object = null, newValue:Object = null, source:Object = null)
Constructor. | PropertyChangeEvent | ||
|
複製 Event 子類別的實體。 | Event | |
createUpdateEvent(source:Object, property:Object, oldValue:Object, newValue:Object):PropertyChangeEvent [靜態]
Returns a new PropertyChangeEvent of kind
PropertyChangeEventKind.UPDATE
with the specified properties. | PropertyChangeEvent | ||
|
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 | |
|
指出物件是否有已定義的指定屬性。 | Object | |
|
檢查是否已經對事件呼叫 preventDefault() 方法。 | Event | |
|
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 | |
|
如果可以取消事件的預設行為指令，則取消該行為指令。 | Event | |
|
指出指定的屬性是否存在，以及是否可列舉。 | Object | |
|
為迴圈作業設定動態屬性的可用性。 | Object | |
|
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 | |
|
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 | |
|
傳回代表此物件的字串，根據地區特定慣例進行格式化。 | Object | |
|
傳回包含 Event 物件所有屬性的字串。 | Event | |
|
會傳回指定之物件的基本值。 | Object | |
公用常數
| 常數 | 定義自 | ||
|---|---|---|---|
| PROPERTY_CHANGE : String = "propertyChange" [靜態]
The PropertyChangeEvent.PROPERTY_CHANGE constant defines the value of the
type property of the event object for a PropertyChange event. | PropertyChangeEvent | ||
屬性詳細資訊
kind | 屬性 |
public var kind: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 |
Specifies the kind of change.
The possible values are PropertyChangeEventKind.UPDATE,
PropertyChangeEventKind.DELETE, and null.
newValue | 屬性 |
public var newValue: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 value of the property after the change.
oldValue | 屬性 |
public var oldValue: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 value of the property before the change.
property | 屬性 |
public var property: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 |
A String, QName, or int specifying the property that changed.
source | 屬性 |
public var source: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 object that the change occured on.
建構函式詳細資料
PropertyChangeEvent | () | 建構函式 |
public function PropertyChangeEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, kind:String = null, property:Object = null, oldValue:Object = null, newValue:Object = null, source: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type:String — The event type; indicates the action that triggered the event.
| |
bubbles:Boolean (default = false) | |
cancelable:Boolean (default = false) | |
kind:String (default = null)PropertyChangeEventKind.UPDATE,
PropertyChangeEventKind.DELETE, and null.
| |
property:Object (default = null) | |
oldValue:Object (default = null) | |
newValue:Object (default = null) | |
source:Object (default = null) |
方法詳細資訊
createUpdateEvent | () | 方法 |
public static function createUpdateEvent(source:Object, property:Object, oldValue:Object, newValue:Object):PropertyChangeEvent| 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 |
Returns a new PropertyChangeEvent of kind
PropertyChangeEventKind.UPDATE
with the specified properties.
This is a convenience method.
參數
source:Object — The object where the change occured.
| |
property:Object — A String, QName, or int
specifying the property that changed,
| |
oldValue:Object — The value of the property before the change.
| |
newValue:Object — The value of the property after the change.
|
PropertyChangeEvent — A newly constructed PropertyChangeEvent
with the specified properties.
|
常數詳細資訊
PROPERTY_CHANGE | 常數 |
public static const PROPERTY_CHANGE:String = "propertyChange"| 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 PropertyChangeEvent.PROPERTY_CHANGE constant defines the value of the
type property of the event object for a PropertyChange event.
The properties of the event object have the following values:
| Property | Value |
|---|---|
bubbles | Determined by the constructor; defaults to false. |
cancelable | Determined by the constructor; defaults to false. |
kind | The kind of change; PropertyChangeEventKind.UPDATE or PropertyChangeEventKind.DELETE. |
oldValue | The original property value. |
newValue | The new property value, if any. |
property | The property that changed. |
source | The object that contains the property that changed. |
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. |
Tue Jun 12 2018, 03:47 PM Z