org.smallmind.swing.file.DirectoryTreeNode 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.file;
import java.util.Comparator;
import java.util.Enumeration;
import javax.swing.tree.TreeNode;
import org.smallmind.swing.tree.AttachmentTreeNode;
public class DirectoryTreeNode extends AttachmentTreeNode {
private boolean instantiated = false;
public DirectoryTreeNode (Directory directory) {
super(directory, directory.hasChildren());
}
private synchronized void instantiateChildren () {
Directory[] childDirectories;
if (!instantiated) {
instantiated = true;
if (getAllowsChildren()) {
childDirectories = ((Directory)getAttachment()).getChildren();
for (Directory childDirectory : childDirectories) {
add(new DirectoryTreeNode(childDirectory));
}
}
}
}
public Enumeration children () {
instantiateChildren();
return super.children();
}
public TreeNode getChildAt (int childIndex) {
instantiateChildren();
return super.getChildAt(childIndex);
}
public int getChildCount () {
instantiateChildren();
return super.getChildCount();
}
public int getIndex (TreeNode node) {
instantiateChildren();
return super.getIndex(node);
}
public void sortChildren (Comparator sort) {
instantiateChildren();
super.sortChildren(sort);
}
}