01: /**
02: * ===========================================
03: * JFreeReport : a free Java reporting library
04: * ===========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: *
22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
23: * in the United States and other countries.]
24: *
25: * ------------
26: * UnmodifiableGroupList.java
27: * ------------
28: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
29: */package org.jfree.report.states;
30:
31: import org.jfree.report.Group;
32: import org.jfree.report.GroupList;
33:
34: /**
35: * An unmodifiable list of groups.
36: *
37: * @author Thomas Morgner.
38: */
39: public class UnmodifiableGroupList extends GroupList {
40: /**
41: * Creates a new Unmodifiable GroupList by copying the contents from the given list.
42: *
43: * @param list the base list.
44: */
45: public UnmodifiableGroupList(final GroupList list) {
46: super (list);
47: }
48:
49: /**
50: * Removes an object from the list.
51: *
52: * @param o the object.
53: * @return nothing, as this method always fires a UnsupportedOperation exception.
54: *
55: * @throws java.lang.UnsupportedOperationException
56: * as this GroupList is not modifiable.
57: */
58: public boolean remove(final Group o) {
59: throw new UnsupportedOperationException();
60: }
61:
62: /**
63: * Adds an object to the list.
64: *
65: * @param o the object (must be an instance of the Group class).
66: * @throws java.lang.UnsupportedOperationException
67: * as this GroupList is not modifiable.
68: */
69: public void add(final Group o) {
70: throw new UnsupportedOperationException();
71: }
72: }
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