Interface AncestorListener
- All Superinterfaces:
EventListener
AncestorListener
Interface to support notification when changes occur to a JComponent or one
of its ancestors. These include movement and when the component becomes
visible or invisible, either by the setVisible() method or by being added
or removed from the component hierarchy.
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Method Summary
Modifier and TypeMethodDescriptionvoid
ancestorAdded
(AncestorEvent event) Called when the source or one of its ancestors is made visible either by setVisible(true) being called or by its being added to the component hierarchy.void
ancestorMoved
(AncestorEvent event) Called when either the source or one of its ancestors is moved.void
ancestorRemoved
(AncestorEvent event) Called when the source or one of its ancestors is made invisible either by setVisible(false) being called or by its being removed from the component hierarchy.
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Method Details
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ancestorAdded
Called when the source or one of its ancestors is made visible either by setVisible(true) being called or by its being added to the component hierarchy. The method is only called if the source has actually become visible. For this to be true all its parents must be visible and it must be in a hierarchy rooted at a Window- Parameters:
event
- anAncestorEvent
signifying a change in an ancestor-component's display-status
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ancestorRemoved
Called when the source or one of its ancestors is made invisible either by setVisible(false) being called or by its being removed from the component hierarchy. The method is only called if the source has actually become invisible. For this to be true at least one of its parents must by invisible or it is not in a hierarchy rooted at a Window- Parameters:
event
- anAncestorEvent
signifying a change in an ancestor-component's display-status
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ancestorMoved
Called when either the source or one of its ancestors is moved.- Parameters:
event
- anAncestorEvent
signifying a change in an ancestor-component's display-status
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