SortingFocusTraversalPolicy
public abstract class InternalFrameFocusTraversalPolicy extends FocusTraversalPolicy
Modifier | Constructor | Description |
---|---|---|
protected |
Constructor for subclasses to call. |
Modifier and Type | Method | Description |
---|---|---|
Component |
getInitialComponent |
Returns the Component that should receive the focus when a JInternalFrame is selected for the first time. |
getComponentAfter, getComponentBefore, getDefaultComponent, getFirstComponent, getInitialComponent, getLastComponent
protected InternalFrameFocusTraversalPolicy()
public Component getInitialComponent(JInternalFrame frame)
setSelected(true)
, the initial Component will not be used again. Instead, if the JInternalFrame loses and subsequently regains selection, or is made invisible or undisplayable and subsequently made visible and displayable, the JInternalFrame's most recently focused Component will become the focus owner. The default implementation of this method returns the JInternalFrame's default Component to focus.frame
- the JInternalFrame whose initial Component is to be returnedIllegalArgumentException
- if window is null
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/InternalFrameFocusTraversalPolicy.html