alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

What this is

This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Other links

The source code

// $Id: TreeModelSupport.java,v 1.6 2004/09/01 16:18:41 mvw Exp $
// Copyright (c) 1996-2003 The Regents of the University of California. All
// Rights Reserved. Permission to use, copy, modify, and distribute this
// software and its documentation without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph appear in all copies.  This software program and
// documentation are copyrighted by The Regents of the University of
// California. The software program and documentation are supplied "AS
// IS", without any accompanying services from The Regents. The Regents
// does not warrant that the operation of the program will be
// uninterrupted or error-free. The end-user understands that the program
// was developed for research purposes and is advised not to rely
// exclusively on the program for any reason.  IN NO EVENT SHALL THE
// UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
// SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
// CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT,
// UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

package org.argouml.ui;

import javax.swing.event.EventListenerList;
import javax.swing.event.TreeModelEvent;
import javax.swing.event.TreeModelListener;
import javax.swing.tree.TreePath;

import org.apache.log4j.Logger;

/**
 * Helper class for tree models that provides tree event handling.
 *
 * 

$Id: TreeModelSupport.java,v 1.6 2004/09/01 16:18:41 mvw Exp $ * * @author alexb * @since 0.13.5, Created on 15 April 2003 */ public class TreeModelSupport extends PerspectiveSupport { private static final Logger LOG = Logger.getLogger(TreeModelSupport.class); /** tree model listener list. */ private EventListenerList listenerList = new EventListenerList(); /** * The constructor. * * @param name the name that will be localized */ public TreeModelSupport(String name) { super(name); } // ---------------- listener management ---------------- /** * Listener management. * * @param l the listener to be added */ public void addTreeModelListener(TreeModelListener l) { listenerList.add(TreeModelListener.class, l); } /** * Listener management. * * @param l the listener to be removed */ public void removeTreeModelListener(TreeModelListener l) { listenerList.remove(TreeModelListener.class, l); } // --------------- tree nodes ------------------------- /** * Notify all listeners that have registered interest for * notification on this event type. The event instance * is lazily created using the parameters passed into * the fire method. * @see EventListenerList */ protected void fireTreeNodesChanged( Object source, Object[] path, int[] childIndices, Object[] children) { // Guaranteed to return a non-null array Object[] listeners = listenerList.getListenerList(); TreeModelEvent e = null; // Process the listeners last to first, notifying // those that are interested in this event for (int i = listeners.length - 2; i >= 0; i -= 2) { if (listeners[i] == TreeModelListener.class) { // Lazily create the event: if (e == null) e = new TreeModelEvent( source, path, childIndices, children); ((TreeModelListener) listeners[i + 1]).treeNodesChanged(e); } } } /** * Notify all listeners that have registered interest for * notification on this event type. The event instance * is lazily created using the parameters passed into * the fire method. * @see EventListenerList */ protected void fireTreeNodesInserted( Object source, Object[] path, int[] childIndices, Object[] children) { // Guaranteed to return a non-null array Object[] listeners = listenerList.getListenerList(); TreeModelEvent e = null; // Process the listeners last to first, notifying // those that are interested in this event for (int i = listeners.length - 2; i >= 0; i -= 2) { if (listeners[i] == TreeModelListener.class) { // Lazily create the event: if (e == null) e = new TreeModelEvent( source, path, childIndices, children); ((TreeModelListener) listeners[i + 1]).treeNodesInserted(e); } } } /** * Notify all listeners that have registered interest for * notification on this event type. The event instance * is lazily created using the parameters passed into * the fire method. * @see EventListenerList */ protected void fireTreeNodesRemoved( Object source, Object[] path, int[] childIndices, Object[] children) { // Guaranteed to return a non-null array Object[] listeners = listenerList.getListenerList(); TreeModelEvent e = null; // Process the listeners last to first, notifying // those that are interested in this event for (int i = listeners.length - 2; i >= 0; i -= 2) { if (listeners[i] == TreeModelListener.class) { // Lazily create the event: if (e == null) e = new TreeModelEvent( source, path, childIndices, children); ((TreeModelListener) listeners[i + 1]).treeNodesRemoved(e); } } } // ------------- tree structure ----------------- /** * @see #fireTreeStructureChanged(Object, Object[], int[], Object[]) */ public void fireTreeStructureChanged() { } /** * @see #fireTreeStructureChanged(Object, Object[], int[], Object[]) * * @param path */ public void fireTreeStructureChanged(TreePath path) { } /** * Notify all listeners that have registered interest for * notification on this event type. The event instance * is lazily created using the parameters passed into * the fire method. * @see EventListenerList */ protected void fireTreeStructureChanged(Object[] path) { fireTreeStructureChanged(this, path); } /** * @see #fireTreeStructureChanged(Object, Object[], int[], Object[]) * */ protected void fireTreeStructureChanged(Object source, Object[] path) { fireTreeStructureChanged(source, path, null, null); } /** * Notify all listeners that have registered interest for * notification on this event type. The event instance * is lazily created using the parameters passed into * the fire method. * @see EventListenerList */ public void fireTreeStructureChanged( Object source, Object[] path, int[] childIndices, Object[] children) { // Guaranteed to return a non-null array Object[] listeners = listenerList.getListenerList(); TreeModelEvent e = null; // Process the listeners last to first, notifying // those that are interested in this event for (int i = listeners.length - 2; i >= 0; i -= 2) { if (listeners[i] == TreeModelListener.class) { // Lazily create the event: if (e == null) e = new TreeModelEvent( source, path, childIndices, children); ((TreeModelListener) listeners[i + 1]).treeStructureChanged(e); } } } }

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.