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/*
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* Copyright 1997-2003 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package javax.swing;
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import java.util.Enumeration;
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import java.util.Locale;
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/**
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*
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* @author Hans Muller
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*/
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class MultiUIDefaults extends UIDefaults
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{
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private UIDefaults[] tables;
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public MultiUIDefaults(UIDefaults[] defaults) {
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super();
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tables = defaults;
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}
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public MultiUIDefaults() {
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super();
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tables = new UIDefaults[0];
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}
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public Object get(Object key)
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{
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Object value = super.get(key);
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if (value != null) {
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return value;
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}
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for(int i = 0; i < tables.length; i++) {
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UIDefaults table = tables[i];
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value = (table != null) ? table.get(key) : null;
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if (value != null) {
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return value;
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}
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}
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return null;
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}
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public Object get(Object key, Locale l)
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{
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Object value = super.get(key,l);
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if (value != null) {
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return value;
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}
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for(int i = 0; i < tables.length; i++) {
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UIDefaults table = tables[i];
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value = (table != null) ? table.get(key,l) : null;
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if (value != null) {
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return value;
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}
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}
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return null;
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}
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public int size() {
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int n = super.size();
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for(int i = 0; i < tables.length; i++) {
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UIDefaults table = tables[i];
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n += (table != null) ? table.size() : 0;
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}
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return n;
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}
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public boolean isEmpty() {
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return size() == 0;
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}
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public Enumeration keys()
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{
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Enumeration[] enums = new Enumeration[1 + tables.length];
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enums[0] = super.keys();
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for(int i = 0; i < tables.length; i++) {
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UIDefaults table = tables[i];
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if (table != null) {
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enums[i + 1] = table.keys();
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}
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}
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return new MultiUIDefaultsEnumerator(enums);
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}
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public Enumeration elements()
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{
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Enumeration[] enums = new Enumeration[1 + tables.length];
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enums[0] = super.elements();
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for(int i = 0; i < tables.length; i++) {
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UIDefaults table = tables[i];
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if (table != null) {
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enums[i + 1] = table.elements();
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}
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}
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return new MultiUIDefaultsEnumerator(enums);
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}
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protected void getUIError(String msg) {
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if (tables.length > 0) {
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tables[0].getUIError(msg);
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} else {
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super.getUIError(msg);
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}
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}
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private static class MultiUIDefaultsEnumerator implements Enumeration
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{
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Enumeration[] enums;
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int n = 0;
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MultiUIDefaultsEnumerator(Enumeration[] enums) {
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this.enums = enums;
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}
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public boolean hasMoreElements() {
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for(int i = n; i < enums.length; i++) {
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Enumeration e = enums[i];
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if ((e != null) && (e.hasMoreElements())) {
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return true;
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}
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}
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return false;
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}
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public Object nextElement() {
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for(; n < enums.length; n++) {
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Enumeration e = enums[n];
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if ((e != null) && (e.hasMoreElements())) {
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return e.nextElement();
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}
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}
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return null;
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}
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}
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public Object remove(Object key)
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{
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Object value = super.remove(key);
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if (value != null) {
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return value;
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}
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for(int i = 0; i < tables.length; i++) {
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UIDefaults table = tables[i];
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value = (table != null) ? table.remove(key) : null;
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if (value != null) {
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return value;
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}
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}
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return null;
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}
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public void clear() {
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super.clear();
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for(int i = 0; i < tables.length; i++) {
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UIDefaults table = tables[i];
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if (table != null) {
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table.clear();
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}
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}
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}
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public synchronized String toString() {
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StringBuffer buf = new StringBuffer();
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buf.append("{");
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Enumeration keys = keys();
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while (keys.hasMoreElements()) {
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Object key = keys.nextElement();
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buf.append(key + "=" + get(key) + ", ");
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}
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int length = buf.length();
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if (length > 1) {
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buf.delete(length-2, length);
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}
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buf.append("}");
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return buf.toString();
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}
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}
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