public class AncestorEvent extends AWTEvent
An event reported to a child component that originated from an ancestor in the component hierarchy.
Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the
java.beans package. Please see
public static final int ANCESTOR_ADDED
An ancestor-component was added to the hierarchy of visible objects (made visible), and is currently being displayed.
public static final int ANCESTOR_REMOVED
An ancestor-component was removed from the hierarchy of visible objects (hidden) and is no longer being displayed.
public static final int ANCESTOR_MOVED
An ancestor-component changed its position on the screen.
public AncestorEvent(JComponent source, int id, Container ancestor, Container ancestorParent)
Constructs an AncestorEvent object to identify a change in an ancestor-component's display-status.
source- the JComponent that originated the event (typically
id- an int specifying
ancestor- a Container object specifying the ancestor-component whose display-status changed
ancestorParent- a Container object specifying the ancestor's parent
public Container getAncestor()
Returns the ancestor that the event actually occurred on.
public Container getAncestorParent()
Returns the parent of the ancestor the event actually occurred on. This is most interesting in an ANCESTOR_REMOVED event, as the ancestor may no longer be in the component hierarchy.
public JComponent getComponent()
Returns the component that the listener was added to.
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