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| 1 | /* | ||
| 2 | * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package javax.swing; | ||
| 27 | |||
| 28 | import java.util.Enumeration; | ||
| 29 | import java.util.HashSet; | ||
| 30 | import java.util.Iterator; | ||
| 31 | import java.util.Locale; | ||
| 32 | import java.util.Map.Entry; | ||
| 33 | import java.util.Set; | ||
| 34 | |||
| 35 | |||
| 36 | |||
| 37 | /** | ||
| 38 | * | ||
| 39 | * @author Hans Muller | ||
| 40 | */ | ||
| 41 | class MultiUIDefaults extends UIDefaults | ||
| 42 | { | ||
| 43 | private UIDefaults[] tables; | ||
| 44 | |||
| 45 | public MultiUIDefaults(UIDefaults[] defaults) { | ||
| 46 | super(); | ||
| 47 | tables = defaults; | ||
| 48 | } | ||
| 49 | |||
| 50 | public MultiUIDefaults() { | ||
| 51 | super(); | ||
| 52 | tables = new UIDefaults[0]; | ||
| 53 | } | ||
| 54 | |||
| 55 | @Override | ||
| 56 | public Object get(Object key) | ||
| 57 | { | ||
| 58 | Object value = super.get(key); | ||
| 59 | if (value != null) { | ||
| 60 | return value; | ||
| 61 | } | ||
| 62 | |||
| 63 | for (UIDefaults table : tables) { | ||
| 64 | value = (table != null) ? table.get(key) : null; | ||
| 65 | if (value != null) { | ||
| 66 | return value; | ||
| 67 | } | ||
| 68 | } | ||
| 69 | |||
| 70 | return null; | ||
| 71 | } | ||
| 72 | |||
| 73 | @Override | ||
| 74 | public Object get(Object key, Locale l) | ||
| 75 | { | ||
| 76 | Object value = super.get(key,l); | ||
| 77 | if (value != null) { | ||
| 78 | return value; | ||
| 79 | } | ||
| 80 | |||
| 81 | for (UIDefaults table : tables) { | ||
| 82 | value = (table != null) ? table.get(key,l) : null; | ||
| 83 | if (value != null) { | ||
| 84 | return value; | ||
| 85 | } | ||
| 86 | } | ||
| 87 | |||
| 88 | return null; | ||
| 89 | } | ||
| 90 | |||
| 91 | @Override | ||
| 92 | public int size() { | ||
| 93 | return entrySet().size(); | ||
| 94 | } | ||
| 95 | |||
| 96 | @Override | ||
| 97 | public boolean isEmpty() { | ||
| 98 | return size() == 0; | ||
| 99 | } | ||
| 100 | |||
| 101 | @Override | ||
| 102 | public Enumeration<Object> keys() | ||
| 103 | { | ||
| 104 | return new MultiUIDefaultsEnumerator( | ||
| 105 | MultiUIDefaultsEnumerator.Type.KEYS, entrySet()); | ||
| 106 | } | ||
| 107 | |||
| 108 | @Override | ||
| 109 | public Enumeration<Object> elements() | ||
| 110 | { | ||
| 111 | return new MultiUIDefaultsEnumerator( | ||
| 112 | MultiUIDefaultsEnumerator.Type.ELEMENTS, entrySet()); | ||
| 113 | } | ||
| 114 | |||
| 115 | @Override | ||
| 116 | public Set<Entry<Object, Object>> entrySet() { | ||
| 117 | Set<Entry<Object, Object>> set = new HashSet<Entry<Object, Object>>(); | ||
| 118 | for (int i = tables.length - 1; i >= 0; i--) { | ||
| 119 | if (tables[i] != null) { | ||
| 120 | set.addAll(tables[i].entrySet()); | ||
| 121 | } | ||
| 122 | } | ||
| 123 | set.addAll(super.entrySet()); | ||
| 124 | return set; | ||
| 125 | } | ||
| 126 | |||
| 127 | @Override | ||
| 128 | protected void getUIError(String msg) { | ||
| 129 | if (tables.length > 0) { | ||
| 130 | tables[0].getUIError(msg); | ||
| 131 | } else { | ||
| 132 | super.getUIError(msg); | ||
| 133 | } | ||
| 134 | } | ||
| 135 | |||
| 136 | private static class MultiUIDefaultsEnumerator implements Enumeration<Object> | ||
| 137 | { | ||
| 138 | public static enum Type { KEYS, ELEMENTS }; | ||
| 139 | private Iterator<Entry<Object, Object>> iterator; | ||
| 140 | private Type type; | ||
| 141 | |||
| 142 | MultiUIDefaultsEnumerator(Type type, Set<Entry<Object, Object>> entries) { | ||
| 143 | this.type = type; | ||
| 144 | this.iterator = entries.iterator(); | ||
| 145 | } | ||
| 146 | |||
| 147 | public boolean hasMoreElements() { | ||
| 148 | return iterator.hasNext(); | ||
| 149 | } | ||
| 150 | |||
| 151 | public Object nextElement() { | ||
| 152 | switch (type) { | ||
| 153 | case KEYS: return iterator.next().getKey(); | ||
| 154 | case ELEMENTS: return iterator.next().getValue(); | ||
| 155 | default: return null; | ||
| 156 | } | ||
| 157 | } | ||
| 158 | } | ||
| 159 | |||
| 160 | @Override | ||
| 161 | public Object remove(Object key) | ||
| 162 | { | ||
| 163 | Object value = null; | ||
| 164 | for (int i = tables.length - 1; i >= 0; i--) { | ||
| 165 | if (tables[i] != null) { | ||
| 166 | Object v = tables[i].remove(key); | ||
| 167 | if (v != null) { | ||
| 168 | value = v; | ||
| 169 | } | ||
| 170 | } | ||
| 171 | } | ||
| 172 | Object v = super.remove(key); | ||
| 173 | if (v != null) { | ||
| 174 | value = v; | ||
| 175 | } | ||
| 176 | |||
| 177 | return value; | ||
| 178 | } | ||
| 179 | |||
| 180 | @Override | ||
| 181 | public void clear() { | ||
| 182 | super.clear(); | ||
| 183 | for (UIDefaults table : tables) { | ||
| 184 | if (table != null) { | ||
| 185 | table.clear(); | ||
| 186 | } | ||
| 187 | } | ||
| 188 | } | ||
| 189 | |||
| 190 | @Override | ||
| 191 | public synchronized String toString() { | ||
| 192 | StringBuffer buf = new StringBuffer(); | ||
| 193 | buf.append("{"); | ||
| 194 | Enumeration keys = keys(); | ||
| 195 | while (keys.hasMoreElements()) { | ||
| 196 | Object key = keys.nextElement(); | ||
| 197 | buf.append(key + "=" + get(key) + ", "); | ||
| 198 | } | ||
| 199 | int length = buf.length(); | ||
| 200 | if (length > 1) { | ||
| 201 | buf.delete(length-2, length); | ||
| 202 | } | ||
| 203 | buf.append("}"); | ||
| 204 | return buf.toString(); | ||
| 205 | } | ||
| 206 | } | ||