適用於 Adobe® Flash® Platform 的 ActionScript® 3.0 參考
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fl.managers 

IFocusManagerComponent  - AS3 Flash

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語言元素

全域常數
全域函數
運算子
陳述式、關鍵字和指令
特殊類型

附錄

新增內容
編譯器錯誤
編譯器警告
執行階段錯誤
移轉至 ActionScript 3
支援的字元集
僅限 MXML 標籤
移動 XML 元素
Timed Text 標籤
不建議元素清單
AccessibilityImplementation 常數
如何使用 ActionScript 範例
法律聲明
套件fl.managers
介面public interface IFocusManagerComponent
實作者 Button, ColorPicker, ComboBox, DataGrid, LabelButton, List, NumericStepper, ScrollPane, SelectableList, Slider, TextArea, TextInput, TileList

語言版本: ActionScript 3.0
產品版本: Flash CS3
執行階段版本: Flash Player 9.0.28.0, AIR 1.0

IFocusManagerComponent 介面會提供方法和屬性,讓組件能夠接收焦點。 組件必須實作此介面,才能從 FocusManager 接收焦點。

UIComponent 類別會提供此介面的基底實作,但是不會完整加以實作,因為並非所有 UIComponent 物件都會接收焦點。 衍生自 UIComponent 類別的組件必須實作此介面,才能接收焦點。 若要啟用焦點,請將陳述式 implements IFocusManagerComponent 加入到衍生自 UIComponent 類別之組件的類別定義。

相關 API 元素



公用屬性
 屬性定義自
  focusEnabled : Boolean
取得或設定 Boolean 值,指出選取的組件是否能從焦點管理員接收焦點。
IFocusManagerComponent
  mouseFocusEnabled : Boolean
[唯讀] 取得 Boolean 值,指出使用滑鼠裝置選取的組件是否能接收焦點。
IFocusManagerComponent
  tabEnabled : Boolean
[唯讀] 取得 Boolean 值,指出按下 Tab 鍵是否可將焦點移至此組件。
IFocusManagerComponent
  tabIndex : int
[唯讀] 如果 tabEnabledis 設定為 true,則會取得組件接收焦點的順序。
IFocusManagerComponent
公用方法
 方法定義自
  
會繪製視覺化焦點指示器。
IFocusManagerComponent
  
會設定組件的焦點。
IFocusManagerComponent
屬性詳細資訊

focusEnabled

屬性
focusEnabled:Boolean

語言版本: ActionScript 3.0
產品版本: Flash CS3
執行階段版本: Flash Player 9.0.28.0, AIR 1.0

取得或設定 Boolean 值,指出選取的組件是否能從焦點管理員接收焦點。

若要讓組件能夠從焦點管理員接收焦點,請將此屬性設定為 true。 若要讓組件無法接收焦點,請將此屬性設定為 false。 當 focusEnabled 設定為 false 時,焦點管理員會在組件存留期間忽略此組件,而且不會監視它在下列屬性中的變更:tabEnabledtabChildrenmouseFocusEnabled

您可以使用 focusEnabled 屬性,防止實作 IFocusManagerComponent 介面之組件的子組件從焦點管理員接收焦點。 若要這樣做,請先將此屬性設定為 false,再使用 addChild() 方法,將子組件加入顯示清單。 請注意,如果您在組件加入顯示清單之前,將此屬性設定為 false,焦點管理員就會繼續忽略此組件,即使之後將此屬性設定為 true 也是一樣。

注意:即使將此屬性設定為 false,您仍然可以使用 setFocus() 方法,透過程式設計的方式設定焦點。



實作
    public function get focusEnabled():Boolean
    public function set focusEnabled(value:Boolean):void

mouseFocusEnabled

屬性 
mouseFocusEnabled:Boolean  [唯讀]

語言版本: ActionScript 3.0
產品版本: Flash CS3
執行階段版本: Flash Player 9.0.28.0, AIR 1.0

取得 Boolean 值,指出使用滑鼠裝置選取的組件是否能接收焦點。

您可以將此屬性設定為 true,將焦點指定給使用滑鼠裝置所選取的組件; 也可以將此屬性設定為 false,避免將焦點指定給使用滑鼠裝置所選取的組件。 使用滑鼠裝置選取組件時,如果將此屬性設定為 false,焦點便會轉移到此屬性設為 true 的第一個父組件。



實作
    public function get mouseFocusEnabled():Boolean

tabEnabled

屬性 
tabEnabled:Boolean  [唯讀]

語言版本: ActionScript 3.0
產品版本: Flash CS3
執行階段版本: Flash Player 9.0.28.0, AIR 1.0

取得 Boolean 值,指出按下 Tab 鍵是否可將焦點移至此組件。 值為 true 表示按下 Tab 鍵可讓焦點移至此組件;值為 false 則表示無法使用 Tab 鍵將焦點指定給此組件。

當使用滑鼠裝置選取組件,或透過呼叫 setFocus() 方法時,即使已將此值設定為 false,組件仍然可以接收焦點。



實作
    public function get tabEnabled():Boolean

tabIndex

屬性 
tabIndex:int  [唯讀]

語言版本: ActionScript 3.0
產品版本: Flash CS3
執行階段版本: Flash Player 9.0.28.0, AIR 1.0

如果 tabEnabled 設定為 true,則會取得組件接收焦點的順序。 tabIndex 屬性預設為 -1,表示物件沒有設定任何定位鍵索引,而且物件會根據 z 順序接收焦點。

tabIndex 屬性可以是非負值的整數。 在這種情況下,物件是根據它們的 tabIndex 屬性,依遞增順序排列。 tabIndex 值為 1 的物件會排在 tabIndex 值為 2 的物件前面。 如果兩個物件的 tabIndex 值相同,則預設定位停駐點順序中最先出現的物件將會在另一個物件前面。

預設值為 -1。



實作
    public function get tabIndex():int
方法詳細資訊

drawFocus

()方法
public function drawFocus(draw:Boolean):void

語言版本: ActionScript 3.0
產品版本: Flash CS3
執行階段版本: Flash Player 9.0.28.0, AIR 1.0

會繪製視覺化焦點指示器。

此方法是在組件收到焦點時,由焦點管理員呼叫。 組件應該繪製或隱藏指出組件成為焦點的圖像。

參數

draw:Boolean — 如果為 true,便繪製焦點指示器,否則就隱藏它。

setFocus

()方法 
public function setFocus():void

語言版本: ActionScript 3.0
產品版本: Flash CS3
執行階段版本: Flash Player 9.0.28.0, AIR 1.0

會設定組件的焦點。

此方法是在組件收到焦點時,由焦點管理員呼叫。 此組件可能會反過來將焦點設定為內部組件。





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