| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed 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 com.example.android.messagingservice; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.concurrent.ThreadLocalRandom; |
| |
| /** |
| * A simple class that denotes unread conversations and messages. In a real world application, |
| * this would be replaced by a content provider that actually gets the unread messages to be |
| * shown to the user. |
| */ |
| public class Conversations { |
| |
| /** |
| * Set of strings used as messages by the sample. |
| */ |
| private static final String[] MESSAGES = new String[]{ |
| "Are you at home?", |
| "Can you give me a call?", |
| "Hey yt?", |
| "Don't forget to get some milk on your way back home", |
| "Is that project done?", |
| "Did you finish the Messaging app yet?" |
| }; |
| |
| /** |
| * Senders of the said messages. |
| */ |
| private static final String[] PARTICIPANTS = new String[]{ |
| "John Smith", |
| "Robert Lawrence", |
| "James Smith", |
| "Jane Doe" |
| }; |
| |
| static class Conversation { |
| |
| private final int conversationId; |
| |
| private final String participantName; |
| |
| /** |
| * A given conversation can have a single or multiple messages. |
| * Note that the messages are sorted from *newest* to *oldest* |
| */ |
| private final List<String> messages; |
| |
| private final long timestamp; |
| |
| public Conversation(int conversationId, String participantName, |
| List<String> messages) { |
| this.conversationId = conversationId; |
| this.participantName = participantName; |
| this.messages = messages == null ? Collections.<String>emptyList() : messages; |
| this.timestamp = System.currentTimeMillis(); |
| } |
| |
| public int getConversationId() { |
| return conversationId; |
| } |
| |
| public String getParticipantName() { |
| return participantName; |
| } |
| |
| public List<String> getMessages() { |
| return messages; |
| } |
| |
| public long getTimestamp() { |
| return timestamp; |
| } |
| |
| public String toString() { |
| return "[Conversation: conversationId=" + conversationId + |
| ", participantName=" + participantName + |
| ", messages=" + messages + |
| ", timestamp=" + timestamp + "]"; |
| } |
| } |
| |
| private Conversations() { |
| } |
| |
| public static Conversation[] getUnreadConversations(int howManyConversations, |
| int messagesPerConversation) { |
| Conversation[] conversations = new Conversation[howManyConversations]; |
| for (int i = 0; i < howManyConversations; i++) { |
| conversations[i] = new Conversation( |
| ThreadLocalRandom.current().nextInt(), |
| name(), makeMessages(messagesPerConversation)); |
| } |
| return conversations; |
| } |
| |
| private static List<String> makeMessages(int messagesPerConversation) { |
| int maxLen = MESSAGES.length; |
| List<String> messages = new ArrayList<>(messagesPerConversation); |
| for (int i = 0; i < messagesPerConversation; i++) { |
| messages.add(MESSAGES[ThreadLocalRandom.current().nextInt(0, maxLen)]); |
| } |
| return messages; |
| } |
| |
| private static String name() { |
| return PARTICIPANTS[ThreadLocalRandom.current().nextInt(0, PARTICIPANTS.length)]; |
| } |
| } |