1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/chat/client/src/main/java/org/apidesign/html/chatserver/client/ChatClient.java Mon May 06 17:40:19 2013 +0200
1.3 @@ -0,0 +1,104 @@
1.4 +/**
1.5 + * The MIT License (MIT)
1.6 + *
1.7 + * Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
1.8 + *
1.9 + * Permission is hereby granted, free of charge, to any person obtaining a copy
1.10 + * of this software and associated documentation files (the "Software"), to deal
1.11 + * in the Software without restriction, including without limitation the rights
1.12 + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
1.13 + * copies of the Software, and to permit persons to whom the Software is
1.14 + * furnished to do so, subject to the following conditions:
1.15 + *
1.16 + * The above copyright notice and this permission notice shall be included in
1.17 + * all copies or substantial portions of the Software.
1.18 + *
1.19 + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
1.20 + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
1.21 + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
1.22 + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
1.23 + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
1.24 + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
1.25 + * THE SOFTWARE.
1.26 + */
1.27 +package org.apidesign.html.chatserver.client;
1.28 +
1.29 +import net.java.html.json.ComputedProperty;
1.30 +import net.java.html.json.Context;
1.31 +import net.java.html.json.Function;
1.32 +import net.java.html.json.Model;
1.33 +import net.java.html.json.OnReceive;
1.34 +import net.java.html.json.Property;
1.35 +import org.apidesign.html.chatserver.model.Message;
1.36 +import org.apidesign.html.chatserver.model.Query;
1.37 +
1.38 +/**
1.39 + *
1.40 + * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
1.41 + */
1.42 +@Model(className = "ChatModel", properties = {
1.43 + @Property(name = "user", type = String.class),
1.44 + @Property(name = "comment", type = String.class),
1.45 + @Property(name = "msgs", type = Message.class, array = true)
1.46 +})
1.47 +class ChatClient {
1.48 + @ComputedProperty
1.49 + static boolean sendEnabled(String user, String comment) {
1.50 + boolean res = user != null && comment != null && !user.isEmpty() && !comment.isEmpty();
1.51 + return res;
1.52 + }
1.53 +
1.54 + @Function
1.55 + static void submit(ChatModel m) {
1.56 + if (!sendEnabled(m.getUser(), m.getComment())) {
1.57 + return;
1.58 + }
1.59 + m.postComment(m.getUser(), m.getComment());
1.60 + }
1.61 +
1.62 + @OnReceive(url = "/chat/addComment?user={user}&comment={comment}")
1.63 + static void postComment(ChatModel m, Message addedMessage) {
1.64 + if (addedMessage.getComment().equals(m.getComment())) {
1.65 + m.setComment("");
1.66 + }
1.67 + }
1.68 +
1.69 + @OnReceive(url = "/chat?since=0")
1.70 + static void initialRead(ChatModel m, Query q) {
1.71 + m.getMsgs().clear();
1.72 + m.getMsgs().addAll(q.getMessages());
1.73 + moreMessages(m);
1.74 + }
1.75 +
1.76 + @OnReceive(url = "/chat?since={since}")
1.77 + static void updateMsgs(ChatModel m, Query q) {
1.78 + m.getMsgs().addAll(q.getMessages());
1.79 + moreMessages(m);
1.80 + }
1.81 +
1.82 + private static void moreMessages(ChatModel m) {
1.83 + long now = 0;
1.84 + for (Message msg : m.getMsgs()) {
1.85 + if (now < msg.getSince()) {
1.86 + now = msg.getSince();
1.87 + }
1.88 + }
1.89 + m.updateMsgs("" + (now + 1));
1.90 + }
1.91 +
1.92 + static final Context CNTX = Context.findDefault(ChatClient.class);
1.93 + static {
1.94 + ChatModel chm = new ChatModel(CNTX);
1.95 + Message m = new Message(CNTX);
1.96 + m.setComment("Waiting for messages from the server...");
1.97 + m.setUser("system");
1.98 + chm.getMsgs().add(m);
1.99 + chm.applyBindings();
1.100 + try {
1.101 + // XXX: this should not be in static initializer -
1.102 + // XXX: prevents unit testing!
1.103 + chm.initialRead();
1.104 + } catch (Throwable ex) {
1.105 + }
1.106 + }
1.107 +}