106 lines
3.5 KiB
Java
106 lines
3.5 KiB
Java
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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import javax.swing.tree.*;
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/**
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* <code>HideableMutableTreeNode</code> is a <code>DefaultMutableTreeNode</code>
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* implementation that works with <code>HideableTreeModel</code>.
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*/
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public class HideableMutableTreeNode extends DefaultMutableTreeNode {
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/**
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* The node is visible flag.
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*/
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private boolean bIsvisible = true;
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private static final String SDUMMY = "Dummy";
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/**
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* Creates a tree node that has no parent and no children, but which
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* allows children.
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*/
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public HideableMutableTreeNode() {
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super();
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}
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/**
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* Creates a tree node with no parent, no children, but which allows
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* children, and initializes it with the specified user object.
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*
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* @param _userObject - an Object provided by the user that
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* constitutes the node's data
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*/
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public HideableMutableTreeNode(Object _userObject) {
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super(_userObject);
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}
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/**
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* Creates a tree node with no parent, no children, initialized with the
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* specified user object, and that allows children only if specified.
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*
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* @param _userObject - an Object provided by the user that describes the node's data
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* @param _ballowsChildren - if true, the node is allowed to have childnodes -- otherwise, it is always a leaf node
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*/
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public HideableMutableTreeNode(Object _userObject, boolean _ballowsChildren) {
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super(_userObject, _ballowsChildren);
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}
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/**
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* Checks if the node is visible.
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*
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* @return true if the node is visible, else false
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*/
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public boolean isVisible() {
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return this.bIsvisible;
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}
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/**
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* Sets if the node is visible.
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*
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* @param _bIsVisible true if the node is visible, else false
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*/
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public void setVisible(boolean _bIsVisible) {
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this.bIsvisible = _bIsVisible;
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}
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public void addDummyNode(){
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removeDummyNode();
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DefaultMutableTreeNode oDefaultMutableTreeNode = new DefaultMutableTreeNode(SDUMMY);
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add(oDefaultMutableTreeNode);
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}
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public boolean removeDummyNode(){
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boolean breturn = false;
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if (getChildCount() == 1){
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DefaultMutableTreeNode oDefaultMutableTreeNode = (DefaultMutableTreeNode) getChildAt(0);
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if (oDefaultMutableTreeNode != null){
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if (oDefaultMutableTreeNode.getUserObject().equals(SDUMMY)){
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remove(0);
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breturn = true;
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}
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}
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}
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return breturn;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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