/*
* @(#)MultiUIDefaults.java 1.16 03/12/19
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.swing;
import java.util.Enumeration;
import java.util.Locale;
/**
*
* @version 1.10 02/02/00
* @author Hans Muller
*/
class MultiUIDefaults extends UIDefaults
{
private UIDefaults[] tables;
public MultiUIDefaults(UIDefaults[] defaults) {
super();
tables = defaults;
}
public MultiUIDefaults() {
super();
tables = new UIDefaults[0];
}
public Object get(Object key)
{
Object value = super.get(key);
if (value != null) {
return value;
}
for(int i = 0; i < tables.length; i++) {
UIDefaults table = tables[i];
value = (table != null) ? table.get(key) : null;
if (value != null) {
return value;
}
}
return null;
}
public Object get(Object key, Locale l)
{
Object value = super.get(key,l);
if (value != null) {
return value;
}
for(int i = 0; i < tables.length; i++) {
UIDefaults table = tables[i];
value = (table != null) ? table.get(key,l) : null;
if (value != null) {
return value;
}
}
return null;
}
public int size() {
int n = super.size();
for(int i = 0; i < tables.length; i++) {
UIDefaults table = tables[i];
n += (table != null) ? table.size() : 0;
}
return n;
}
public boolean isEmpty() {
return size() == 0;
}
public Enumeration keys()
{
Enumeration[] enums = new Enumeration[1 + tables.length];
enums[0] = super.keys();
for(int i = 0; i < tables.length; i++) {
UIDefaults table = tables[i];
if (table != null) {
enums[i + 1] = table.keys();
}
}
return new MultiUIDefaultsEnumerator(enums);
}
public Enumeration elements()
{
Enumeration[] enums = new Enumeration[1 + tables.length];
enums[0] = super.elements();
for(int i = 0; i < tables.length; i++) {
UIDefaults table = tables[i];
if (table != null) {
enums[i + 1] = table.elements();
}
}
return new MultiUIDefaultsEnumerator(enums);
}
protected void getUIError(String msg) {
if (tables.length > 0) {
tables[0].getUIError(msg);
} else {
super.getUIError(msg);
}
}
private static class MultiUIDefaultsEnumerator implements Enumeration
{
Enumeration[] enums;
int n = 0;
MultiUIDefaultsEnumerator(Enumeration[] enums) {
this.enums = enums;
}
public boolean hasMoreElements() {
for(int i = n; i < enums.length; i++) {
Enumeration e = enums[i];
if ((e != null) && (e.hasMoreElements())) {
return true;
}
}
return false;
}
public Object nextElement() {
for(; n < enums.length; n++) {
Enumeration e = enums[n];
if ((e != null) && (e.hasMoreElements())) {
return e.nextElement();
}
}
return null;
}
}
public Object remove(Object key)
{
Object value = super.remove(key);
if (value != null) {
return value;
}
for(int i = 0; i < tables.length; i++) {
UIDefaults table = tables[i];
value = (table != null) ? table.remove(key) : null;
if (value != null) {
return value;
}
}
return null;
}
public void clear() {
super.clear();
for(int i = 0; i < tables.length; i++) {
UIDefaults table = tables[i];
if (table != null) {
table.clear();
}
}
}
public synchronized String toString() {
StringBuffer buf = new StringBuffer();
buf.append("{");
Enumeration keys = keys();
while (keys.hasMoreElements()) {
Object key = keys.nextElement();
buf.append(key + "=" + get(key) + ", ");
}
int length = buf.length();
if (length > 1) {
buf.delete(length-2, length);
}
buf.append("}");
return buf.toString();
}
}
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