package org.eclipse.swt.events; | |
/* | |
* (c) Copyright IBM Corp. 2000, 2001. | |
* All Rights Reserved | |
*/ | |
import org.eclipse.swt.internal.SWTEventListener; | |
/** | |
* 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 SWTEventListener { | |
/** | |
* 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); | |
} |