| package org.eclipse.swt.events; | |
| /* | |
| * (c) Copyright IBM Corp. 2000, 2001. | |
| * All Rights Reserved | |
| */ | |
| import java.util.EventListener; | |
| /** | |
| * Classes which implement this interface provide methods | |
| * that deal with the expanding and collapsing of tree | |
| * branches. | |
| * <p> | |
| * After creating an instance of a class that implements | |
| * this interface it can be added to a control using the | |
| * <code>addTreeListener</code> method and removed using | |
| * the <code>removeTreeListener</code> method. When a branch | |
| * of a tree is expanded or collapsed, the appropriate method | |
| * will be invoked. | |
| * </p> | |
| * | |
| * @see TreeAdapter | |
| * @see TreeEvent | |
| */ | |
| public interface TreeListener extends EventListener { | |
| /** | |
| * Sent when a tree branch is collapsed. | |
| * | |
| * @param e an event containing information about the tree operation | |
| */ | |
| public void treeCollapsed(TreeEvent e); | |
| /** | |
| * Sent when a tree branch is expanded. | |
| * | |
| * @param e an event containing information about the tree operation | |
| */ | |
| public void treeExpanded(TreeEvent e); | |
| } |