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javax.swing

public abstract Class InternalFrameFocusTraversalPolicy

extends FocusTraversalPolicy
Class Inheritance
Known Direct Subclasses
javax.swing.SortingFocusTraversalPolicy
Imports
java.awt.Component, .FocusTraversalPolicy
A FocusTraversalPolicy which can optionally provide an algorithm for determining a JInternalFrame's initial Component. The initial Component is the first to receive focus when the JInternalFrame is first selected. By default, this is the same as the JInternalFrame's default Component to focus.
Author
David Mendenhall
Since
1.4

Constructor Summary

AccessConstructor and Description
protected
InternalFrameFocusTraversalPolicy()

Constructor for subclasses to call.

Method Summary

Modifier and TypeMethod and Description
public Component

Returns:

the Component that should receive the focus when frame is selected for the first time, or null if no suitable Component can be found
getInitialComponent(JInternalFrame
the JInternalFrame whose initial Component is to be returned
frame)

Returns the Component that should receive the focus when a JInternalFrame is selected for the first time.

Inherited from java.awt.FocusTraversalPolicy:
getComponentAftergetComponentBeforegetDefaultComponentgetFirstComponentgetInitialComponentgetLastComponent

Constructor Detail

InternalFrameFocusTraversalPolicyback to summary
protected InternalFrameFocusTraversalPolicy()

Constructor for subclasses to call.

Method Detail

getInitialComponentback to summary
public Component getInitialComponent(JInternalFrame frame)

Returns the Component that should receive the focus when a JInternalFrame is selected for the first time. Once the JInternalFrame has been selected by a call to 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.

Parameters
frame:JInternalFrame

the JInternalFrame whose initial Component is to be returned

Returns:Component

the Component that should receive the focus when frame is selected for the first time, or null if no suitable Component can be found

Exceptions
IllegalArgumentException:
if window is null
See Also
JInternalFrame#getMostRecentFocusOwner