01: /*
02: * Copyright (c) 2002-2007 JGoodies Karsten Lentzsch. All Rights Reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, are permitted provided that the following conditions are met:
06: *
07: * o Redistributions of source code must retain the above copyright notice,
08: * this list of conditions and the following disclaimer.
09: *
10: * o Redistributions in binary form must reproduce the above copyright notice,
11: * this list of conditions and the following disclaimer in the documentation
12: * and/or other materials provided with the distribution.
13: *
14: * o Neither the name of JGoodies Karsten Lentzsch nor the names of
15: * its contributors may be used to endorse or promote products derived
16: * from this software without specific prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20: * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
22: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
25: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
27: * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
28: * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29: */
30:
31: package com.jgoodies.binding.tests.event;
32:
33: import javax.swing.ListModel;
34: import javax.swing.event.ListDataEvent;
35: import javax.swing.event.ListDataListener;
36:
37: import junit.framework.Assert;
38:
39: /**
40: * Compares the size reported by the ListDataEvents with the ListModel size.
41: *
42: * @author Karsten Lentzsch
43: * @version $Revision: 1.4 $
44: */
45: public final class ListSizeConstraintChecker implements
46: ListDataListener {
47:
48: private int size;
49:
50: public ListSizeConstraintChecker(int initialSize) {
51: this .size = initialSize;
52: }
53:
54: public void contentsChanged(ListDataEvent e) {
55: assertSize(e);
56: }
57:
58: public void intervalAdded(ListDataEvent e) {
59: int addedElements = e.getIndex1() - e.getIndex0() + 1;
60: size += addedElements;
61: assertSize(e);
62: }
63:
64: public void intervalRemoved(ListDataEvent e) {
65: int removedElements = e.getIndex1() - e.getIndex0() + 1;
66: size -= removedElements;
67: assertSize(e);
68: }
69:
70: private void assertSize(ListDataEvent e) {
71: Assert
72: .assertEquals(
73: "The ListModel size equals the size reported by ListDataEvents.",
74: ((ListModel) e.getSource()).getSize(), size);
75: }
76:
77: }
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