public abstract class InternalFrameFocusTraversalPolicy extends FocusTraversalPolicy
| Constructor and Description |
|---|
InternalFrameFocusTraversalPolicy() |
| Modifier and Type | Method and Description |
|---|---|
Component |
getInitialComponent(JInternalFrame frame)
返回组件应接收焦点时,JInternalFrame首次入选。
|
getComponentAfter, getComponentBefore, getDefaultComponent, getFirstComponent, getInitialComponent, getLastComponentpublic Component getInitialComponent(JInternalFrame frame)
setSelected(true)选定的初始组件将不会再使用。相反,如果jinternalframe失去随后恢复的选择,或是不可见或不可显示,随后可见和可显示,该jinternalframe最近聚焦组件将成为焦点的主人。此方法的默认实现返回jinternalframe的默认组件集中。
frame - jinternalframe的初始组件要返回
IllegalArgumentException如果窗口是空的
JInternalFrame.getMostRecentFocusOwner()
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