| /**************************************************************** |
| * Licensed to the Apache Software Foundation (ASF) under one * |
| * or more contributor license agreements. See the NOTICE file * |
| * distributed with this work for additional information * |
| * regarding copyright ownership. The ASF licenses this file * |
| * to you under the Apache License, Version 2.0 (the * |
| * "License"); you may not use this file except in compliance * |
| * with the License. You may obtain a copy of the License at * |
| * * |
| * http://www.apache.org/licenses/LICENSE-2.0 * |
| * * |
| * Unless required by applicable law or agreed to in writing, * |
| * software distributed under the License is distributed on an * |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * |
| * KIND, either express or implied. See the License for the * |
| * specific language governing permissions and limitations * |
| * under the License. * |
| ****************************************************************/ |
| |
| package org.apache.james.mime4j.dom.address; |
| |
| import java.io.Serializable; |
| import java.util.AbstractList; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * An immutable, random-access list of Address objects. |
| */ |
| public class AddressList extends AbstractList<Address> implements Serializable { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private final List<? extends Address> addresses; |
| |
| /** |
| * @param addresses |
| * A List that contains only Address objects. |
| * @param dontCopy |
| * true iff it is not possible for the addresses list to be |
| * modified by someone else. |
| */ |
| public AddressList(List<? extends Address> addresses, boolean dontCopy) { |
| if (addresses != null) { |
| this.addresses = dontCopy ? addresses : new ArrayList<Address>(addresses); |
| } else { |
| this.addresses = Collections.emptyList(); |
| } |
| } |
| |
| /** |
| * @param addresses |
| * A List that contains only Address objects. |
| */ |
| public AddressList(List<? extends Address> addresses) { |
| this(addresses, false); |
| } |
| |
| /** |
| * @param addresses |
| * A List that contains only Address objects. |
| */ |
| public AddressList(Address... addresses) { |
| if (addresses != null) { |
| this.addresses = Arrays.asList(addresses); |
| } else { |
| this.addresses = Collections.emptyList(); |
| } |
| } |
| |
| /** |
| * The number of elements in this list. |
| */ |
| @Override |
| public int size() { |
| return addresses.size(); |
| } |
| |
| /** |
| * Gets an address. |
| */ |
| @Override |
| public Address get(int index) { |
| return addresses.get(index); |
| } |
| |
| /** |
| * Returns a flat list of all mailboxes represented in this address list. |
| * Use this if you don't care about grouping. |
| */ |
| public MailboxList flatten() { |
| // in the common case, all addresses are mailboxes |
| boolean groupDetected = false; |
| for (Address addr : addresses) { |
| if (!(addr instanceof Mailbox)) { |
| groupDetected = true; |
| break; |
| } |
| } |
| |
| if (!groupDetected) { |
| @SuppressWarnings("unchecked") |
| final List<Mailbox> mailboxes = (List<Mailbox>) addresses; |
| return new MailboxList(mailboxes, true); |
| } |
| |
| List<Mailbox> results = new ArrayList<Mailbox>(); |
| for (Address addr : addresses) { |
| addr.addMailboxesTo(results); |
| } |
| |
| // copy-on-construct this time, because subclasses |
| // could have held onto a reference to the results |
| return new MailboxList(results, false); |
| } |
| |
| } |