001 /**
002 * Java Gui Builder - A library to build GUIs using an XML file.
003 * Copyright 2002, 2003 (C) François Beausoleil
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either
008 * version 2.1 of the License, or (at your option) any later version.
009 *
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
013 * Lesser General Public License for more details.
014 *
015 * You should have received a copy of the GNU Lesser General Public
016 * License along with this library; if not, write to the Free Software
017 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
018 */
019
020 package jgb.builder.utils;
021
022 import org.xml.sax.Attributes;
023
024 import java.util.Collection;
025 import java.util.HashSet;
026 import java.util.Map;
027 import java.util.Set;
028
029 /**
030 * @author Francois Beausoleil, <a href="mailto:fbos@users.sourceforge.net">fbos@users.sourceforge.net</a>
031 */
032 public class AttributesMapAdapter implements Map {
033 private Attributes atts;
034
035 public AttributesMapAdapter(Attributes atts) {
036 this.atts = atts;
037 }
038
039 public void setAttributes(Attributes atts) {
040 this.atts = atts;
041 }
042
043 public void clear() {
044 throw new UnsupportedOperationException("AttributesMapAdapter does not support the " + "clear" + " operation");
045 }
046
047 public boolean containsKey(Object key) {
048 return get(key) != null;
049 }
050
051 public boolean containsValue(Object value) {
052 throw new UnsupportedOperationException("AttributesMapAdapter does not support the " + "containsValue(Object value)" + " operation");
053 }
054
055 public Set entrySet() {
056 Set entries = new HashSet();
057 for (int i = 0; i < atts.getLength(); i++) {
058 Map.Entry entry = new MapEntry(atts, i);
059 entries.add(entry);
060 }
061
062 return entries;
063 }
064
065 public Object get(Object key) {
066 return atts.getValue((String)key);
067 }
068
069 public boolean isEmpty() {
070 throw new UnsupportedOperationException("AttributesMapAdapter does not support the " + "isEmpty()" + " operation");
071 }
072
073 public Set keySet() {
074 throw new UnsupportedOperationException("AttributesMapAdapter does not support the " + "keySet()" + " operation");
075 }
076
077 public Object put(Object key, Object value) {
078 throw new UnsupportedOperationException("AttributesMapAdapter does not support the " + "put(Object key, Object value)" + " operation");
079 }
080
081 public void putAll(Map t) {
082 throw new UnsupportedOperationException("AttributesMapAdapter does not support the " + "putAll(Map t)" + " operation");
083 }
084
085 public Object remove(Object key) {
086 throw new UnsupportedOperationException("AttributesMapAdapter does not support the " + "remove(Object key)" + " operation");
087 }
088
089 public int size() {
090 throw new UnsupportedOperationException("AttributesMapAdapter does not support the " + "size()" + " operation");
091 }
092
093 public Collection values() {
094 throw new UnsupportedOperationException("AttributesMapAdapter does not support the " + "values()" + " operation");
095 }
096
097 private static class MapEntry implements Map.Entry {
098 private Attributes atts;
099 private int index;
100
101 public MapEntry(Attributes atts, int index) {
102 this.atts = atts;
103 this.index = index;
104 }
105
106 public boolean equals(Object obj) {
107 boolean equal = false;
108 if (obj != null && obj instanceof MapEntry) {
109 MapEntry equalTo = (MapEntry)obj;
110 equal = (this.atts == equalTo.atts)
111 && (this.index == equalTo.index);
112 }
113
114 return equal;
115 }
116
117 public int hashCode() {
118 return 17 + (37 * index * atts.hashCode());
119 }
120
121 public Object getKey() {
122 return atts.getQName(index);
123 }
124
125 public Object getValue() {
126 return atts.getValue(index);
127 }
128
129 public Object setValue(Object value) {
130 throw new UnsupportedOperationException("AttributesMapAdapter.MapEntry does not support the setValue(value) operation");
131 }
132 }
133 }