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git.scottworley.com Git - reliable-chat/blob - webclient/rc.html
1 <!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.1//EN"
2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
3 <html xmlns=
"http://www.w3.org/1999/xhtml">
5 reliable-chat - multipath chat
6 Copyright (C) 2012 Scott Worley <sworley@chkno.net>
7 Copyright (C) 2012 Jason Hibbs <skitch@gmail.com>
9 This program is free software: you can redistribute it and/or modify
10 it under the terms of the GNU Affero General Public License as
11 published by the Free Software Foundation, either version 3 of the
12 License, or (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU Affero General Public License for more details.
19 You should have received a copy of the GNU Affero General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 <title>Reliable Chat
</title>
24 <style type=
"text/css"><!--/*--><![CDATA[/*
><!--*/
30 background-color: #293134;
32 font-family: monospace;
43 background-color: #293134;
44 padding: 5px 5px 5px 0px;
48 padding: 0px 0px 0px 5px;
55 background-color: #293134;
59 padding: 0px 5px 55px 5px;
60 vertical-align: bottom
69 .timestamp:hover, .timestamp:hover .servertimestamps {
70 background-color: #556;
72 .timestamp:hover .servertimestamps {
80 border: 1px solid black;
85 img { width: 1px; height: 1px; }
86 iframe { display: none }
87 #status span { margin-right: 10px; }
89 background-color: #f00;
91 border: 1px solid black;
97 background-color: #0f0;
99 border: 1px solid black;
105 <script type=
"text/javascript"><!--//--><![CDATA[/
/><!--
106 var servers = ['chkno.net', 'rc2.chkno.net', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];
108 var session = Math.random(); // For outgoing message IDs
109 var since = {}; // server -> time: For fetch?since=
110 var seen = {}; // seen_key -> message
111 var history = []; // List of messages sorted by Time
112 // Messages have these fields:
113 // Time: The timestamp. Median of ServerTimes
114 // ID: Some unique string for deduping
115 // Text: The text of the message
116 // ServerTimes: server -> timestamp
117 // UI: The DOM node for this message in the UI
120 var nick = localStorage.getItem("nick");
127 function rcsetnick(new_nick) {
128 localStorage.setItem("nick", new_nick);
131 function rcserverbase(server) {
132 // Add the default port if server doesn't contain a port number already
133 if (server.indexOf(":") == -1) {
134 return "http://" + server + ":21059";
136 return "http://" + server;
140 function rcchangeserverstatus(server, new_status) {
141 var statusbar = document.getElementById("status");
142 var spans = statusbar.getElementsByTagName("span");
143 for (var i in spans) {
144 if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
145 spans[i].setAttribute("class", new_status);
150 function rcformattime(t) {
152 d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d];
153 var h = t.getHours();
154 var m = t.getMinutes();
155 var s = t.getSeconds();
157 return (x < 10 ? "0" : "") + x;
159 return d + " " + pad(h) + ":" + pad(m) + ":" + pad(s);
162 function rcaddservertimestamptohover(message, server) {
163 var divs = message.UI.getElementsByTagName("div");
164 for (var i in divs) {
165 if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") {
166 var d = document.createElement("div");
168 return (x < 10 ? "00" : (x < 100 ? "0" : "")) + x;
170 var text = rcformattime(message.ServerTimes[server]) + "." + pad(message.ServerTimes[server].getUTCMilliseconds()) + " " + server;
171 d.appendChild(document.createTextNode(text));
172 divs[i].appendChild(d);
177 function rcmakemessageUI(message) {
178 message.UI = document.createElement("div");
181 var servercount = document.createElement("span");
182 servercount.setAttribute("class", "servercount");
183 servercount.appendChild(document.createTextNode(Object.keys(message.ServerTimes).length));
184 message.UI.appendChild(servercount);
187 var timestamp_text = message.Time ? rcformattime(message.Time) : "";
188 var timestamp = document.createElement("span");
189 timestamp.setAttribute("class", "timestamp");
190 timestamp.appendChild(document.createTextNode(timestamp_text));
191 message.UI.appendChild(timestamp);
194 var timestamp_hover = document.createElement("div");
195 timestamp_hover.setAttribute("class", "servertimestamps");
196 timestamp.appendChild(timestamp_hover);
197 for (var server in message.ServerTimes) {
198 rcaddservertimestamptohover(message, server);
201 // Classify different message types
202 var text_span = document.createElement("span");
204 if (/^\*\*\* /.test(message.Text)) {
206 } else if (/^\* /.test(message.Text)) {
211 if (Object.keys(message.ServerTimes).length == 0) {
214 text_span.setAttribute("class", type);
217 var text = message.Text;
218 var URL_re = /\bhttps?:\/\/\S+/;
219 while (URL_re.test(text)) {
220 var match = URL_re.exec(text);
221 var leading_text = text.substr(0, match.index);
223 text_span.appendChild(document.createTextNode(leading_text));
225 var anchor = document.createElement("a");
226 anchor.setAttribute("href", encodeURI(match[0]));
227 anchor.appendChild(document.createTextNode(match[0]));
228 text_span.appendChild(anchor);
229 text = text.substr(match.index + match[0].length);
232 text_span.appendChild(document.createTextNode(text));
235 message.UI.appendChild(text_span);
238 function rcaddmessagetohistory(message) {
241 for (var i = history.length - 1; ; i--) {
242 if (i < 0 || (history[i].Time && message.Time >= history[i].Time)) {
244 history.splice(message_i, 0, message);
249 history.push(message);
250 message_i = history.length-1;
254 rcmakemessageUI(message);
256 var h = document.getElementById("history");
257 if (message_i + 1 < history.length) {
258 h.insertBefore(message.UI, history[message_i + 1].UI);
260 h.appendChild(message.UI);
262 window.scrollTo(0, document.body.scrollHeight);
265 function make_seen_key(id, text) {
266 return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
269 function rcupdatemessagetime(message) {
270 // Set message.Time to be the median of message.ServerTimes
272 for (var i in message.ServerTimes) {
273 times.push(message.ServerTimes[i]);
276 if (times.length % 2) {
277 message.Time = times[(times.length-1)/2];
279 var middle = times.length/2;
280 var difference = times[middle].getTime() - times[middle-1].getTime();
281 message.Time = new Date(times[middle-1].getTime() + difference/2);
284 // This may have broken history's in-sorted-order invariant
285 var hi = history.indexOf(message);
286 if ((history[hi-1] && history[hi-1].Time > message.Time) ||
287 (history[hi+1] && history[hi+1].Time < message.Time)) {
288 history.splice(hi,1);
289 rcaddmessagetohistory(message);
293 var spans = message.UI.getElementsByTagName("span");
294 for (var i in spans) {
295 if (spans[i].getAttribute) {
296 var type = spans[i].getAttribute("class");
297 if (type == "servercount") {
298 spans[i].firstChild.data = Object.keys(message.ServerTimes).length;
299 } else if (type == "timestamp") {
300 spans[i].firstChild.data = rcformattime(message.Time);
306 function rcreceivemessages(server, messages) {
307 for (var i in messages) {
309 m.Time = new Date(m.Time);
310 var seen_key = make_seen_key(m.ID, m.Text);
311 if (seen_key in seen) {
312 seen[seen_key].ServerTimes[server] = m.Time;
313 rcupdatemessagetime(seen[seen_key]);
314 rcaddservertimestamptohover(seen[seen_key], server);
317 m.ServerTimes[server] = m.Time;
319 rcaddmessagetohistory(m);
320 for (var i in servers) {
321 rcchangeserverstatus(servers[i], "sad");
324 rcchangeserverstatus(server, "happy");
328 function rcfetch(server) {
329 var delay = 10000; // TODO: Exponential backoff
330 var xhr = new XMLHttpRequest();
331 xhr.onreadystatechange = function() {
332 if (this.readyState == this.DONE) {
333 if (this.status == 200) {
334 var rtxt = this.responseText;
336 var messages = JSON.parse(rtxt);
337 if (messages != null) {
339 if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
340 since[server] = messages[messages.length-1].Time;
342 rcreceivemessages(server, messages);
346 window.setTimeout(rcfetch, delay, server);
349 var uri = rcserverbase(server) + "/fetch";
350 if (server in since) {
351 uri += '?since="' + since[server] + '"';
353 xhr.open("GET", uri);
357 function rcconnect() {
358 for (var i in servers) {
361 var status_indicator = document.createElement("span");
362 status_indicator.appendChild(document.createTextNode(servers[i]));
363 status_indicator.setAttribute("class", "sad");
364 document.getElementById("status").appendChild(status_indicator);
368 function rcsend(d, message) {
369 message.ID = new Date().getTime() + "-" + session + "-" + Math.random();
370 seen[make_seen_key(message.ID, message.Text)] = message;
371 var path = "/speak" +
372 "?id=" + encodeURIComponent(message.ID) +
373 "&text=" + encodeURIComponent(message.Text);
374 for (var i in servers) {
375 var uri = rcserverbase(servers[i]) + path;
376 var img = document.createElement("img");
377 img.setAttribute("src", uri);
382 function rcinput(input) {
384 var re = /^\/([a-z]+) (.*)/
385 var match = re.exec(input);
386 if (match && match[1] == 'me') {
387 message = "* " + rcnick() + " " + match[2];
388 } else if (match && match[1] == 'nick') {
389 message = "*** " + rcnick() + " is now known as " + match[2];
392 message = "<" + rcnick() + "> " + input;
395 var m = {'Text': message, 'ServerTimes': {}};
396 rcaddmessagetohistory(m);
400 function rckeydown(event) {
401 if (event.keyCode == 13) {
402 rcinput(document.input.say.value);
403 document.input.say.value = "";
411 <body onload=
"rcconnect()">
413 <div id=
"history"></div>
416 <form name=
"input" onsubmit=
"return false" autocomplete=
"off">
417 <input id=
"say" onkeydown=
"return rckeydown(event)" autocomplete=
"off" autofocus=
"autofocus"></input>
419 <div id=
"status"> </div>