META-INF.modules.java.desktop.classes.java.awt.event.HierarchyBoundsAdapter Maven / Gradle / Ivy
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package java.awt.event;
/**
* An abstract adapter class for receiving ancestor moved and resized events.
* The methods in this class are empty. This class exists as a
* convenience for creating listener objects.
*
* Extend this class and override the method for the event of interest. (If
* you implement the {@code HierarchyBoundsListener} interface, you have
* to define both methods in it. This abstract class defines null methods for
* them both, so you only have to define the method for the event you care
* about.)
*
* Create a listener object using your class and then register it with a
* Component using the Component's {@code addHierarchyBoundsListener}
* method. When the hierarchy to which the Component belongs changes by
* resize or movement of an ancestor, the relevant method in the listener
* object is invoked, and the {@code HierarchyEvent} is passed to it.
*
* @author David Mendenhall
* @see HierarchyBoundsListener
* @see HierarchyEvent
* @since 1.3
*/
public abstract class HierarchyBoundsAdapter implements HierarchyBoundsListener
{
/**
* Constructs a {@code HierarchyBoundsAdapter}.
*/
protected HierarchyBoundsAdapter() {}
/**
* Called when an ancestor of the source is moved.
*/
public void ancestorMoved(HierarchyEvent e) {}
/**
* Called when an ancestor of the source is resized.
*/
public void ancestorResized(HierarchyEvent e) {}
}