ListSelectionModelTest


1   /* 
2    * This file is part of the Echo Web Application Framework (hereinafter "Echo").
3    * Copyright (C) 2002-2005 NextApp, Inc.
4    *
5    * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6    *
7    * The contents of this file are subject to the Mozilla Public License Version
8    * 1.1 (the "License"); you may not use this file except in compliance with
9    * the License. You may obtain a copy of the License at
10   * http://www.mozilla.org/MPL/
11   *
12   * Software distributed under the License is distributed on an "AS IS" basis,
13   * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14   * for the specific language governing rights and limitations under the
15   * License.
16   *
17   * Alternatively, the contents of this file may be used under the terms of
18   * either the GNU General Public License Version 2 or later (the "GPL"), or
19   * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
20   * in which case the provisions of the GPL or the LGPL are applicable instead
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28   */
29  
30  package nextapp.echo2.app.test;
31  
32  import nextapp.echo2.app.event.ChangeEvent;
33  import nextapp.echo2.app.event.ChangeListener;
34  import nextapp.echo2.app.list.DefaultListSelectionModel;
35  import junit.framework.TestCase;
36  
37  /**
38   * Unit test(s) for the <code>nextapp.echo2.app.list.ListSelectionModel</code>
39   * and derivatives. 
40   */
41  public class ListSelectionModelTest extends TestCase {
42      
43      public class TestChangeListener
44      implements ChangeListener {
45          
46          private ChangeEvent e;
47          
48          /**
49           * @see nextapp.echo2.app.event.ChangeListener#stateChanged(nextapp.echo2.app.event.ChangeEvent)
50           */
51          public void stateChanged(ChangeEvent e) {
52              this.e = e;
53          }
54      }
55      
56      public void testChangeSelectionMode() {
57          DefaultListSelectionModel selectionModel = new DefaultListSelectionModel();
58          TestChangeListener changeListener = new TestChangeListener();
59          selectionModel.addChangeListener(changeListener);
60          selectionModel.setSelectionMode(DefaultListSelectionModel.MULTIPLE_SELECTION);
61          assertEquals(DefaultListSelectionModel.MULTIPLE_SELECTION, selectionModel.getSelectionMode());
62          selectionModel.setSelectedIndex(25, true);
63          selectionModel.setSelectedIndex(27, true);
64          selectionModel.setSelectedIndex(50, true);
65          selectionModel.setSelectedIndex(44, true);
66          assertEquals(25, selectionModel.getMinSelectedIndex());
67          assertEquals(50, selectionModel.getMaxSelectedIndex());
68          changeListener.e = null;
69          
70          selectionModel.setSelectionMode(DefaultListSelectionModel.SINGLE_SELECTION);
71          assertEquals(DefaultListSelectionModel.SINGLE_SELECTION, selectionModel.getSelectionMode());
72          assertEquals(25, selectionModel.getMinSelectedIndex());
73          assertEquals(25, selectionModel.getMaxSelectedIndex());
74          assertNotNull(changeListener.e);
75          assertEquals(selectionModel, changeListener.e.getSource());
76      }
77      
78      public void testInitialState() {
79          DefaultListSelectionModel selectionModel = new DefaultListSelectionModel();
80          
81          assertTrue(selectionModel.isSelectionEmpty());
82          assertEquals(-1, selectionModel.getMinSelectedIndex());
83          assertEquals(-1, selectionModel.getMaxSelectedIndex());
84          assertFalse(selectionModel.isSelectedIndex(0));
85          assertFalse(selectionModel.isSelectedIndex(1));
86          assertFalse(selectionModel.isSelectedIndex(2));
87      }
88      
89      public void testMultipleSelection() {
90          DefaultListSelectionModel selectionModel = new DefaultListSelectionModel();
91          selectionModel.setSelectionMode(DefaultListSelectionModel.MULTIPLE_SELECTION);
92          assertEquals(DefaultListSelectionModel.MULTIPLE_SELECTION, selectionModel.getSelectionMode());
93          
94          TestChangeListener changeListener = new TestChangeListener();
95          selectionModel.addChangeListener(changeListener);
96          
97          selectionModel.setSelectedIndex(50, true);
98          assertFalse(selectionModel.isSelectionEmpty());
99          assertTrue(selectionModel.isSelectedIndex(50));
100         assertFalse(selectionModel.isSelectedIndex(0));
101         assertFalse(selectionModel.isSelectedIndex(5));
102         assertFalse(selectionModel.isSelectedIndex(49));
103         assertFalse(selectionModel.isSelectedIndex(51));
104         assertEquals(50, selectionModel.getMinSelectedIndex());
105         assertEquals(50, selectionModel.getMaxSelectedIndex());
106         assertNotNull(changeListener.e);
107         assertEquals(selectionModel, changeListener.e.getSource());
108         changeListener.e = null;
109         
110         selectionModel.setSelectedIndex(75, true);
111         assertFalse(selectionModel.isSelectionEmpty());
112         assertTrue(selectionModel.isSelectedIndex(50));
113         assertTrue(selectionModel.isSelectedIndex(75));
114         assertEquals(50, selectionModel.getMinSelectedIndex());
115         assertEquals(75, selectionModel.getMaxSelectedIndex());
116         assertNotNull(changeListener.e);
117         assertEquals(selectionModel, changeListener.e.getSource());
118         changeListener.e = null;
119         
120         selectionModel.setSelectedIndex(67, true);
121         assertFalse(selectionModel.isSelectionEmpty());
122         assertTrue(selectionModel.isSelectedIndex(50));
123         assertTrue(selectionModel.isSelectedIndex(67));
124         assertTrue(selectionModel.isSelectedIndex(75));
125         assertEquals(50, selectionModel.getMinSelectedIndex());
126         assertEquals(75, selectionModel.getMaxSelectedIndex());
127         assertNotNull(changeListener.e);
128         assertEquals(selectionModel, changeListener.e.getSource());
129         changeListener.e = null;
130         
131         selectionModel.setSelectedIndex(21, true);
132         assertFalse(selectionModel.isSelectionEmpty());
133         assertTrue(selectionModel.isSelectedIndex(21));
134         assertTrue(selectionModel.isSelectedIndex(50));
135         assertTrue(selectionModel.isSelectedIndex(67));
136         assertTrue(selectionModel.isSelectedIndex(75));
137         assertEquals(21, selectionModel.getMinSelectedIndex());
138         assertEquals(75, selectionModel.getMaxSelectedIndex());
139         assertNotNull(changeListener.e);
140         assertEquals(selectionModel, changeListener.e.getSource());
141         changeListener.e = null;
142 
143         selectionModel.setSelectedIndex(75, false);
144         assertFalse(selectionModel.isSelectionEmpty());
145         assertTrue(selectionModel.isSelectedIndex(21));
146         assertTrue(selectionModel.isSelectedIndex(50));
147         assertTrue(selectionModel.isSelectedIndex(67));
148         assertFalse(selectionModel.isSelectedIndex(75));
149         assertEquals(21, selectionModel.getMinSelectedIndex());
150         assertEquals(67, selectionModel.getMaxSelectedIndex());
151         assertNotNull(changeListener.e);
152         assertEquals(selectionModel, changeListener.e.getSource());
153         changeListener.e = null;
154 
155         selectionModel.setSelectedIndex(21, false);
156         assertFalse(selectionModel.isSelectionEmpty());
157         assertFalse(selectionModel.isSelectedIndex(21));
158         assertTrue(selectionModel.isSelectedIndex(50));
159         assertTrue(selectionModel.isSelectedIndex(67));
160         assertFalse(selectionModel.isSelectedIndex(75));
161         assertEquals(50, selectionModel.getMinSelectedIndex());
162         assertEquals(67, selectionModel.getMaxSelectedIndex());
163         assertNotNull(changeListener.e);
164         assertEquals(selectionModel, changeListener.e.getSource());
165         changeListener.e = null;
166         
167         selectionModel.clearSelection();
168         assertTrue(selectionModel.isSelectionEmpty());
169         assertFalse(selectionModel.isSelectedIndex(21));
170         assertFalse(selectionModel.isSelectedIndex(50));
171         assertFalse(selectionModel.isSelectedIndex(67));
172         assertFalse(selectionModel.isSelectedIndex(75));
173         assertEquals(-1, selectionModel.getMinSelectedIndex());
174         assertEquals(-1, selectionModel.getMaxSelectedIndex());
175         assertNotNull(changeListener.e);
176         assertEquals(selectionModel, changeListener.e.getSource());
177         changeListener.e = null;
178     }
179     
180     public void testSingleSelection() {
181         DefaultListSelectionModel selectionModel = new DefaultListSelectionModel();
182         assertEquals(DefaultListSelectionModel.SINGLE_SELECTION, selectionModel.getSelectionMode());
183         TestChangeListener changeListener = new TestChangeListener();
184         selectionModel.addChangeListener(changeListener);
185         
186         selectionModel.setSelectedIndex(50, true);
187         assertFalse(selectionModel.isSelectionEmpty());
188         assertTrue(selectionModel.isSelectedIndex(50));
189         assertFalse(selectionModel.isSelectedIndex(0));
190         assertFalse(selectionModel.isSelectedIndex(5));
191         assertFalse(selectionModel.isSelectedIndex(49));
192         assertFalse(selectionModel.isSelectedIndex(51));
193         assertEquals(50, selectionModel.getMinSelectedIndex());
194         assertEquals(50, selectionModel.getMaxSelectedIndex());
195         assertNotNull(changeListener.e);
196         assertEquals(selectionModel, changeListener.e.getSource());
197         changeListener.e = null;
198         
199         selectionModel.setSelectedIndex(75, true);
200         assertFalse(selectionModel.isSelectionEmpty());
201         assertFalse(selectionModel.isSelectedIndex(50));
202         assertTrue(selectionModel.isSelectedIndex(75));
203         assertEquals(75, selectionModel.getMinSelectedIndex());
204         assertEquals(75, selectionModel.getMaxSelectedIndex());
205         assertNotNull(changeListener.e);
206         assertEquals(selectionModel, changeListener.e.getSource());
207         changeListener.e = null;
208 
209         selectionModel.clearSelection();
210         assertTrue(selectionModel.isSelectionEmpty());
211         assertFalse(selectionModel.isSelectedIndex(50));
212         assertFalse(selectionModel.isSelectedIndex(75));
213         assertEquals(-1, selectionModel.getMinSelectedIndex());
214         assertEquals(-1, selectionModel.getMaxSelectedIndex());
215         assertNotNull(changeListener.e);
216         assertEquals(selectionModel, changeListener.e.getSource());
217         changeListener.e = null;
218     }
219 }
220
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