зеркало из https://github.com/mozilla/gecko-dev.git
64 строки
1.7 KiB
Java
64 строки
1.7 KiB
Java
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil -*-
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is the Grendel mail/news client.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1997
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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/**
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* This takes a bunch of enumerators, and runs through them all, in the order
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* given.
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*/
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package calypso.util;
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import java.util.Enumeration;
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import java.util.NoSuchElementException;
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import java.util.Vector;
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public class EnumerationEnumerator implements Enumeration {
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Vector enums;
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int cur;
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public EnumerationEnumerator() {
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enums = new Vector();
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cur = 0;
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}
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public void add(Enumeration e) {
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enums.addElement(e);
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}
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public boolean hasMoreElements() {
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for (int i=cur ; i<enums.size() ; i++) {
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if (((Enumeration) enums.elementAt(i)).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() throws NoSuchElementException {
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do {
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Enumeration e = ((Enumeration) enums.elementAt(cur));
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if (e.hasMoreElements()) {
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return e.nextElement();
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}
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cur++;
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} while (cur < enums.size());
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throw new NoSuchElementException();
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}
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}
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