| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| |
| package org.apache.uima.tools.cvd.control; |
| |
| import java.awt.event.FocusEvent; |
| import java.awt.event.FocusListener; |
| |
| import javax.swing.JTree; |
| import javax.swing.tree.TreePath; |
| |
| public class TreeFocusHandler implements FocusListener { |
| |
| private JTree tree; |
| |
| public TreeFocusHandler(JTree tree) { |
| super(); |
| this.tree = tree; |
| } |
| |
| public void focusGained(FocusEvent arg0) { |
| TreePath selPath = this.tree.getSelectionPath(); |
| if (selPath == null) { |
| selPath = new TreePath(new Object[] { this.tree.getModel().getRoot() }); |
| this.tree.setSelectionPath(selPath); |
| } |
| } |
| |
| public void focusLost(FocusEvent arg0) { |
| // Do nothing. |
| } |
| |
| } |