1 /*
2 * Copyright 2004-2008 the Seasar Foundation and the Others.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
13 * either express or implied. See the License for the specific language
14 * governing permissions and limitations under the License.
15 */
16 package org.seasar.uruma.viewer;
17
18 import org.eclipse.jface.viewers.DoubleClickEvent;
19 import org.eclipse.jface.viewers.IDoubleClickListener;
20 import org.eclipse.jface.viewers.IStructuredSelection;
21 import org.eclipse.jface.viewers.TreeViewer;
22 import org.eclipse.swt.widgets.Composite;
23 import org.eclipse.swt.widgets.Tree;
24
25 /**
26 * 機能拡張した {@link TreeViewer} です。<br />
27 *
28 * @author y-komori
29 */
30 public class UrumaTreeViewer extends TreeViewer implements IDoubleClickListener {
31
32 /**
33 * {@link UrumaTreeViewer} を構築します。<br />
34 *
35 * @param parent
36 * 親 {@link Composite}
37 */
38 public UrumaTreeViewer(final Composite parent) {
39 super(parent);
40 init();
41 }
42
43 /**
44 * {@link UrumaTreeViewer} を構築します。<br />
45 *
46 * @param parent
47 * 親 {@link Composite}
48 * @param style
49 * スタイル値
50 */
51 public UrumaTreeViewer(final Composite parent, final int style) {
52 super(parent, style);
53 init();
54 }
55
56 /**
57 * {@link UrumaTreeViewer} を構築します。<br />
58 *
59 * @param tree
60 * {@link Tree} オブジェクト
61 */
62 public UrumaTreeViewer(final Tree tree) {
63 super(tree);
64 init();
65 }
66
67 protected void init() {
68 addDoubleClickListener(this);
69 }
70
71 /*
72 * @see org.eclipse.jface.viewers.IDoubleClickListener#doubleClick(org.eclipse.jface.viewers.DoubleClickEvent)
73 */
74 public void doubleClick(final DoubleClickEvent event) {
75 IStructuredSelection selection = (IStructuredSelection) event
76 .getSelection();
77 Object selected = selection.getFirstElement();
78
79 // ノードの展開状態を反転させる
80 boolean expandedState = getExpandedState(selected);
81 setExpandedState(selected, !expandedState);
82 }
83 }