org.smallmind.swing.tree.AttachmentTreeModel Maven / Gradle / Ivy
/*
* Copyright (c) 2007 through 2024 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* .
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.swing.tree;
import java.util.Iterator;
import javax.swing.event.TreeModelEvent;
import javax.swing.event.TreeModelListener;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;
import org.smallmind.nutsnbolts.util.WeakEventListenerList;
public class AttachmentTreeModel extends Tree implements TreeModel {
private final WeakEventListenerList listenerList;
public AttachmentTreeModel (AttachmentTreeNode root) {
super(root);
listenerList = new WeakEventListenerList();
}
public synchronized void addTreeModelListener (TreeModelListener treeModelListener) {
listenerList.addListener(treeModelListener);
}
public synchronized void removeTreeModelListener (TreeModelListener treeModelListener) {
listenerList.removeListener(treeModelListener);
}
public Object getChild (Object parent, int childIndex) {
return ((AttachmentTreeNode)parent).getChildAt(childIndex);
}
public int getChildCount (Object parent) {
return ((AttachmentTreeNode)parent).getChildCount();
}
public int getIndexOfChild (Object parent, Object child) {
return ((AttachmentTreeNode)parent).getIndex((AttachmentTreeNode)child);
}
public boolean isLeaf (Object node) {
return ((AttachmentTreeNode)node).isLeaf();
}
public void valueForPathChanged (TreePath path, Object newValue) {
AttachmentTreeNode lastNode = (AttachmentTreeNode)path.getLastPathComponent();
Object[] children = {};
int[] childIndices = {};
if (!lastNode.getAttachment().equals(newValue)) {
lastNode.setUserObject(newValue);
fireTreeNodesChanged(this, path.getPath(), childIndices, children);
}
}
public void fireTreeNodesChanged (Object source, Object[] path, int[] childIndices, Object[] children) {
TreeModelEvent treeModelEvent;
Iterator listenerIter = listenerList.getListeners();
treeModelEvent = new TreeModelEvent(source, path, childIndices, children);
while (listenerIter.hasNext()) {
listenerIter.next().treeNodesChanged(treeModelEvent);
}
}
public void fireTreeStructureChanged (Object source, Object[] path, int[] childIndices, Object[] children) {
TreeModelEvent treeModelEvent;
Iterator listenerIter = listenerList.getListeners();
treeModelEvent = new TreeModelEvent(source, path, childIndices, children);
while (listenerIter.hasNext()) {
listenerIter.next().treeStructureChanged(treeModelEvent);
}
}
public boolean isValidPath (TreePath path) {
Object[] pathArray = path.getPath();
int count;
for (count = 0; count < pathArray.length; count++) {
if (count == 0) {
if (!(getRoot()).equals(pathArray[0])) {
return false;
}
} else {
if (((AttachmentTreeNode)pathArray[count - 1]).getIndex((AttachmentTreeNode)pathArray[count]) < 0) {
return false;
}
}
}
return true;
}
}