org.smallmind.swing.tree.SmallMindTreeModel Maven / Gradle / Ivy
/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012 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 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.
*
* 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 for more details.
*
* You should have received a copy of the the GNU Affero General Public
* 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.SmallMindTree;
import org.smallmind.nutsnbolts.util.SmallMindTreeNode;
import org.smallmind.nutsnbolts.util.WeakEventListenerList;
public class SmallMindTreeModel extends SmallMindTree implements TreeModel {
private WeakEventListenerList listenerList;
public SmallMindTreeModel (SmallMindTreeNode 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 ((SmallMindTreeNode)parent).getChildAt(childIndex);
}
public int getChildCount (Object parent) {
return ((SmallMindTreeNode)parent).getChildCount();
}
public int getIndexOfChild (Object parent, Object child) {
return ((SmallMindTreeNode)parent).getIndex((SmallMindTreeNode)child);
}
public boolean isLeaf (Object node) {
return ((SmallMindTreeNode)node).isLeaf();
}
public void valueForPathChanged (TreePath path, Object newValue) {
SmallMindTreeNode lastNode = (SmallMindTreeNode)path.getLastPathComponent();
Object[] children = {};
int[] childIndices = {};
if (!lastNode.getUserObject().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 (((SmallMindTreeNode)pathArray[count - 1]).getIndex((SmallMindTreeNode)pathArray[count]) < 0) {
return false;
}
}
}
return true;
}
}
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