[reliable-chat] / webclient / rc.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<!--
 reliable-chat - multipath chat
 Copyright (C) 2012  Scott Worley <sworley@chkno.net>
 Copyright (C) 2012  Jason Hibbs <skitch@gmail.com>

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as
 published by the Free Software Foundation, either version 3 of the
 License, or (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Affero General Public License for more details.

 You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
-->
<head>
 <title>Reliable Chat</title>
  <style type="text/css"><!--/*--><![CDATA[/*><!--*/
	html, body {
		width: 100%;
		height: 100%;
		margin: 0;
		padding: 0;
		background-color: #293134;
		color: silver;
		font-family: monospace;
	}
	a {
		color: #ddd;
	}
	#container {
		height: 100%;
	}
	#status {
		width: 100%;
		text-align: right;
		background-color: #293134;
		padding: 5px 5px 5px 0px;
	}
	#client {
		width: 100%;
		position: fixed;
		bottom: 0;
	}
	#input {
		width: 100%;
		background-color: #293134;
	}
	#say { width: 100% }
	#history {
		padding: 0px 5px 30px 5px;
		vertical-align: bottom;
	}
	.banner {
		font-size: 85%;
		text-align: right;
	}
	.status {
		color: #dd8;
	}
	.local.self {
		color: #d8d;
	}
	.self {
		color: #8d8;
	}
	.me {
		color: #bbd;
	}
	.servercount {
		margin-right: -0.5em;
		font-size: 70%;
	}
	.timestamp:hover, .timestamp:hover .servertimestamps {
		background-color: #556;
	}
	.timestamp:hover .servertimestamps {
		display: block;
	}
	.servertimestamps {
	  display: none;
		position: absolute;
		left: 3em;
		z-index: 1;
		border: 1px solid black;
		border-radius: 5px;
		padding-left: 5px;
		padding-right: 5px;
	}
	img { width: 1px; height: 1px; }
	iframe { display: none }
	#status span { margin-right: 10px; }
	#status span.sad {
		background-color: #f00;
		color: #fff;
		border: 1px solid black;
		border-radius: 5px;
		padding-left: 5px;
		padding-right: 5px;
	}
	#status span.happy {
		background-color: #0f0;
		color: #000;
		border: 1px solid black;
		border-radius: 5px;
		padding-left: 5px;
		padding-right: 5px;
	}

	/* BEGIN expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */
	.expandingArea {
		position: relative;
		border: 1px solid #888;
		background: silver;
	}
	.expandingArea > textarea,
	.expandingArea > pre {
		margin: 0;
		outline: 0;
		border: 0;
		padding: 5px;
		background: transparent;
		font: 400 13px/16px helvetica, arial, sans-serif;
		/* Make the text soft-wrap */
		white-space: pre-wrap;
		word-wrap: break-word;
	}
	.expandingArea > textarea {
		/* The border-box box model is used to allow
		 * padding whilst still keeping the overall width
		 * at exactly that of the containing element.
		 */
		-webkit-box-sizing: border-box;
		   -moz-box-sizing: border-box;
		    -ms-box-sizing: border-box;
			box-sizing: border-box;
		width: 100%;
		/* Hide any scrollbars */
		overflow: hidden;
		position: absolute;
		top: 0;
		left: 0;
		height: 100%;
		/* Remove WebKit user-resize widget */
		resize: none;
	}
	.expandingArea > pre {
		display: block;
		/* Hide the text; just using it for sizing */
		visibility: hidden;
	}
	/* END expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */

  /*]]>*/--></style>
  <script type="text/javascript"><!--//--><![CDATA[//><!--
	var servers = ['chkno.net', 'rc2.chkno.net', 'reliablechat-chk.rhcloud.com:80', 'intense-basin-3395.herokuapp.com:80', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];

	var session = Math.random();  // For outgoing message IDs
	var since = {};    // server -> time: For fetch?since=
	var seen = {};     // seen_key -> message
	var history = [];  // List of messages sorted by Time
	// Messages have these fields:
	//   Time: The timestamp.  Median of ServerTimes
	//   ID: Some unique string for deduping
	//   Text: The text of the message
	//   ServerTimes: server -> timestamp
	//   UI: The DOM node for this message in the UI

	function rcnick() {
		var nick = localStorage.getItem("nick");
		if (nick) {
			return nick;
		}
		return 'anonymous';
	}

	function rcsetnick(new_nick) {
		localStorage.setItem("nick", new_nick);
	}

	function rcserverbase(server) {
		// Add the default port if server doesn't contain a port number already
		if (server.indexOf(":") == -1) {
			return "http://" + server + ":21059";
		} else {
			return "http://" + server;
		}
	}

	function rcchangeserverstatus(server, new_status) {
		var statusbar = document.getElementById("status");
		var spans = statusbar.getElementsByTagName("span");
		for (var i in spans) {
			if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
				spans[i].setAttribute("class", new_status);
			}
		}
	}

	function rcpad2(x) {
		return (x < 10 ? "0" : "") + x;
	}
	function rcpad3(x) {
		return (x < 10 ? "00" : (x < 100 ? "0" : "")) + x;
	}

	function rcformattime(t) {
		var d = t.getDay();
		d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d];
		var h = t.getHours();
		var m = t.getMinutes();
		var s = t.getSeconds();
		return d + " " + rcpad2(h) + ":" + rcpad2(m) + ":" + rcpad2(s);
	}

	function rcaddservertimestamptohover(message, server) {
		var divs = message.UI.getElementsByTagName("div");
		var t = message.ServerTimes[server];
		for (var i in divs) {
			if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") {
				var d = document.createElement("div");
				var text = t.getFullYear() + "-" +
					rcpad2(t.getMonth()) + "-" +
					rcpad2(t.getDay()) + " " +
					rcformattime(t) + "." +
					rcpad3(t.getMilliseconds()) + " " +
					server;
				d.appendChild(document.createTextNode(text));
				divs[i].appendChild(d);
			}
		}
	}

	function rcmakemessageUI(message) {
		message.UI = document.createElement("div");

		// Server count
		var servercount = document.createElement("span");
		servercount.setAttribute("class", "servercount");
		servercount.appendChild(document.createTextNode(Object.keys(message.ServerTimes).length));
		message.UI.appendChild(servercount);
		message.UI.appendChild(document.createTextNode(" "));

		// Timestamp
		var timestamp_text = message.Time ? rcformattime(message.Time) : "";
		var timestamp = document.createElement("span");
		timestamp.setAttribute("class", "timestamp");
		timestamp.appendChild(document.createTextNode(timestamp_text));
		message.UI.appendChild(timestamp);
		message.UI.appendChild(document.createTextNode(" "));

		// Timestamp hover
		var timestamp_hover = document.createElement("div");
		timestamp_hover.setAttribute("class", "servertimestamps");
		timestamp.appendChild(timestamp_hover);
		for (var server in message.ServerTimes) {
			rcaddservertimestamptohover(message, server);
		}

		// Classify different message types
		var text_span = document.createElement("span");
		var type;
		if (/^\*\*\* /.test(message.Text)) {
			type = "status";
		} else if (/^\* /.test(message.Text)) {
			type = "me";
		} else if (/^-!- /.test(message.Text)) {
			type = "local";
		} else {
			type = "text";
		}
		if (Object.keys(message.ServerTimes).length == 0) {
			type += " self";
		}
		text_span.setAttribute("class", type);

		// URL detection
		var text = message.Text;
		var URL_re = /\bhttps?:\/\/\S+/;
		while (URL_re.test(text)) {
			var match = URL_re.exec(text);
			var leading_text = text.substr(0, match.index);
			if (leading_text) {
				text_span.appendChild(document.createTextNode(leading_text));
			}
			var anchor = document.createElement("a");
			anchor.setAttribute("rel", "nofollow");
			anchor.setAttribute("href", encodeURI(match[0]));
			anchor.appendChild(document.createTextNode(match[0]));
			text_span.appendChild(anchor);
			text = text.substr(match.index + match[0].length);
		}
		if (text) {
			text_span.appendChild(document.createTextNode(text));
		}

		message.UI.appendChild(text_span);
	}

	function rcaddmessagetohistory(message) {
		var message_i;
		if (message.Time) {
			for (var i = history.length - 1; ; i--) {
				if (i < 0 || (history[i].Time && message.Time >= history[i].Time)) {
					message_i = i+1;
					history.splice(message_i, 0, message);
					break;
				}
			}
		} else {
			history.push(message);
			message_i = history.length-1;
		}
		if (message_i + 1 < history.length) {
			rcaddmessagetoUI(message, history[message_i + 1].UI);
		} else {
			rcaddmessagetoUI(message, null);
		}
	}

	function rcaddmessagetoUI(message, before) {
		if (!message.UI) {
			rcmakemessageUI(message);
		}
		var h = document.getElementById("history");
		if (before) {
			h.insertBefore(message.UI, before);
		} else {
			h.appendChild(message.UI);
		}
		window.scrollTo(0, document.body.scrollHeight);
	}

	function make_seen_key(id, text) {
		return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
	}

	function rcupdatemessagetime(message) {
		// Set message.Time to be the median of message.ServerTimes
		var times = [];
		for (var i in message.ServerTimes) {
			times.push(message.ServerTimes[i]);
		}
		times.sort();
		if (times.length % 2) {
			message.Time = times[(times.length-1)/2];
		} else {
			var middle = times.length/2;
			var difference = times[middle].getTime() - times[middle-1].getTime();
			message.Time = new Date(times[middle-1].getTime() + difference/2);
		}

		// This may have broken history's in-sorted-order invariant
		var hi = history.indexOf(message);
		if ((history[hi-1] && history[hi-1].Time > message.Time) ||
		    (history[hi+1] && history[hi+1].Time < message.Time)) {
			history.splice(hi,1);
			rcaddmessagetohistory(message);
		}

		// Update the UI
		var spans = message.UI.getElementsByTagName("span");
		for (var i in spans) {
			if (spans[i].getAttribute) {
				var type = spans[i].getAttribute("class");
				if (type == "servercount") {
					spans[i].firstChild.data = Object.keys(message.ServerTimes).length;
				} else if (type == "timestamp") {
					spans[i].firstChild.data = rcformattime(message.Time);
				}
			}
		}
	}

	function rcreceivemessages(server, messages) {
		for (var i in messages) {
			var m = messages[i];
			m.Time = new Date(m.Time);
			var seen_key = make_seen_key(m.ID, m.Text);
			if (seen_key in seen) {
				seen[seen_key].ServerTimes[server] = m.Time;
				rcupdatemessagetime(seen[seen_key]);
				rcaddservertimestamptohover(seen[seen_key], server);
			} else {
				m.ServerTimes = {};
				m.ServerTimes[server] = m.Time;
				seen[seen_key] = m;
				rcaddmessagetohistory(m);
				for (var i in servers) {
					rcchangeserverstatus(servers[i], "sad");
				}
			}
			rcchangeserverstatus(server, "happy");
		}
	}

	function rcfetch(server) {
		var delay = 10000;  // TODO: Exponential backoff
		var xhr = new XMLHttpRequest();
		xhr.onreadystatechange = function() {
			if (this.readyState == this.DONE) {
				if (this.status == 200) {
					var rtxt = this.responseText;
					if (rtxt != null) {
						var messages = JSON.parse(rtxt);
						if (messages != null) {
							delay = 40;
							if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
								since[server] = messages[messages.length-1].Time;
							}
							rcreceivemessages(server, messages);
						}
					}
				}
				window.setTimeout(rcfetch, delay, server);
			}
		}
		var uri = rcserverbase(server) + "/fetch";
		if (server in since) {
			uri += '?since="' + since[server] + '"';
		}
		xhr.open("GET", uri);
		xhr.send();
	}

	function rcconnect() {
		makeExpandingArea(document.getElementById("expando"));
		for (var i in servers) {
			rcfetch(servers[i]);
			// Status bar entry
			var status_indicator = document.createElement("span");
			status_indicator.appendChild(document.createTextNode(servers[i]));
			status_indicator.setAttribute("class", "sad");
			document.getElementById("status").appendChild(status_indicator);
		}
	}

	function rcsend(d, message) {
		message.ID = new Date().getTime() + "-" + session + "-" + Math.random();
		seen[make_seen_key(message.ID, message.Text)] = message;
		var path = "/speak" +
			"?id=" + encodeURIComponent(message.ID) +
			"&text=" + encodeURIComponent(message.Text);
		for (var i in servers) {
			var xhr = new XMLHttpRequest();
			xhr.open("POST", rcserverbase(servers[i]) + path);
			xhr.send();
		}
	}

	function rcinput(input) {
		var message;
		var re = /^\/(\S+)(\s(.*))?/;
		var match = re.exec(input);
		if (match) {
			var command = match[1];
			var rest = match[3];
			if (command == 'me') {
				message = "* " + rcnick() + "  " + rest;
			} else if (command == 'nick') {
				if (rcnick() == rest) {
					rcaddmessagetoUI({'Text': '-!- Your nick is already ' + rcnick(), 'ServerTimes': {}});
					return;
				}
				message = "*** " + rcnick() + " is now known as " + rest;
				rcsetnick(rest);
			} else {
				rcaddmessagetoUI({'Text': '-!- No such command: ' + command, 'ServerTimes': {}});
				return;
			}
		} else {
			message = "<" + rcnick() + "> " + input;
		}

		var m = {'Text': message, 'ServerTimes': {}};
		rcaddmessagetohistory(m);
		rcsend(m.UI, m);
	}

	function rckeydown(event) {
		if (event.keyCode == 13) {
			if (document.input.say.value) {
				rcinput(document.input.say.value);
			}
			document.input.say.value = "";
			return false;
		}
	}

	// From http://www.alistapart.com/articles/expanding-text-areas-made-elegant/
	function makeExpandingArea(container) {
		var area = container.querySelector('textarea');
		var span1 = container.querySelector('span');
		var span2 = document.getElementById('historypad');
		if (area.addEventListener) {
			area.addEventListener('input', function() {
				span1.textContent = area.value;
				span2.textContent = area.value;
			}, false);
			span1.textContent = area.value;
			span2.textContent = area.value;
		} else if (area.attachEvent) {
			// IE8 compatibility
			area.attachEvent('onpropertychange', function() {
				span1.innerText = area.value;
				span2.innerText = area.value;
			});
			span1.innerText = area.value;
			span2.innerText = area.value;
		}
	}
  //--><!]]></script>

</head>

<body onload="rcconnect()">
	<div id="container">
		<div class="banner">(You are using <a href="https://github.com/chkno/reliable-chat">Reliable Chat</a>)</div>
		<div id="history"></div>
		<div class="expandingArea" style="visibility: hidden">
			<pre><span id="historypad"></span><br></pre>
		</div>
		<div id="client">
			<div id="input">
				<form name="input" onsubmit="return false" autocomplete="off">
					<div id="expando" class="expandingArea">
						<pre><span></span><br></pre>
						<textarea id="say" onkeydown="return rckeydown(event)" autofocus="autofocus"></textarea>
					</div>
				</form></div>
			<div id="status"></div>
		</div>
	</div>
</body>
</html>
Commit	Line	Data
827f21bb SW	1	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
827f21bb SW	2	"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
827f21bb	3	<html xmlns="http://www.w3.org/1999/xhtml">
520c21fd SW	4	<!--
	5	reliable-chat - multipath chat
	6	Copyright (C) 2012 Scott Worley <sworley@chkno.net>
	7	Copyright (C) 2012 Jason Hibbs <skitch@gmail.com>
	8
	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.
	13
	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.
	18
	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/>.
	21	-->
827f21bb SW	22	<head>
827f21bb SW	23	<title>Reliable Chat</title>
0248a518	24	<style type="text/css"><!--/--><![CDATA[/><!--*/
70f46223	25	html, body {
19724ebd	26	width: 100%;
70f46223 JH	27	height: 100%;
	28	margin: 0;
	29	padding: 0;
b22a2ced JH	30	background-color: #293134;
b22a2ced JH	31	color: silver;
70f46223 JH	32	font-family: monospace;
70f46223 JH	33	}
e04a2cfd	34	a {
63b1551b	35	color: #ddd;
e04a2cfd	36	}
70f46223 JH	37	#container {
	38	height: 100%;
	39	}
	40	#status {
	41	width: 100%;
638866e9	42	text-align: right;
b22a2ced	43	background-color: #293134;
70f46223 JH	44	padding: 5px 5px 5px 0px;
	45	}
	46	#client {
19724ebd	47	width: 100%;
70f46223 JH	48	position: fixed;
	49	bottom: 0;
	50	}
	51	#input {
	52	width: 100%;
b22a2ced	53	background-color: #293134;
70f46223	54	}
0248a518	55	#say { width: 100% }
70f46223	56	#history {
19724ebd SW	57	padding: 0px 5px 30px 5px;
19724ebd SW	58	vertical-align: bottom;
70f46223	59	}
5afebfc6 SW	60	.banner {
	61	font-size: 85%;
	62	text-align: right;
	63	}
7310ffee SW	64	.status {
	65	color: #dd8;
	66	}
	67	.local.self {
	68	color: #d8d;
	69	}
	70	.self {
	71	color: #8d8;
	72	}
	73	.me {
	74	color: #bbd;
	75	}
c0aac85a	76	.servercount {
33fdb071	77	margin-right: -0.5em;
c0aac85a SW	78	font-size: 70%;
c0aac85a SW	79	}
244a78af SW	80	.timestamp:hover, .timestamp:hover .servertimestamps {
	81	background-color: #556;
	82	}
	83	.timestamp:hover .servertimestamps {
	84	display: block;
	85	}
	86	.servertimestamps {
	87	display: none;
	88	position: absolute;
	89	left: 3em;
	90	z-index: 1;
	91	border: 1px solid black;
	92	border-radius: 5px;
	93	padding-left: 5px;
	94	padding-right: 5px;
	95	}
0248a518 SW	96	img { width: 1px; height: 1px; }
0248a518 SW	97	iframe { display: none }
70f46223	98	#status span { margin-right: 10px; }
f09c4ede JH	99	#status span.sad {
	100	background-color: #f00;
	101	color: #fff;
	102	border: 1px solid black;
	103	border-radius: 5px;
	104	padding-left: 5px;
	105	padding-right: 5px;
	106	}
	107	#status span.happy {
	108	background-color: #0f0;
	109	color: #000;
	110	border: 1px solid black;
	111	border-radius: 5px;
	112	padding-left: 5px;
	113	padding-right: 5px;
	114	}
19724ebd SW	115
	116	/* BEGIN expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */
	117	.expandingArea {
	118	position: relative;
	119	border: 1px solid #888;
63b1551b	120	background: silver;
19724ebd SW	121	}
	122	.expandingArea > textarea,
	123	.expandingArea > pre {
	124	margin: 0;
	125	outline: 0;
	126	border: 0;
	127	padding: 5px;
	128	background: transparent;
	129	font: 400 13px/16px helvetica, arial, sans-serif;
	130	/* Make the text soft-wrap */
	131	white-space: pre-wrap;
	132	word-wrap: break-word;
	133	}
	134	.expandingArea > textarea {
	135	/* The border-box box model is used to allow
	136	* padding whilst still keeping the overall width
	137	* at exactly that of the containing element.
	138	*/
	139	-webkit-box-sizing: border-box;
	140	-moz-box-sizing: border-box;
	141	-ms-box-sizing: border-box;
	142	box-sizing: border-box;
	143	width: 100%;
	144	/* Hide any scrollbars */
	145	overflow: hidden;
	146	position: absolute;
	147	top: 0;
	148	left: 0;
	149	height: 100%;
	150	/* Remove WebKit user-resize widget */
	151	resize: none;
	152	}
	153	.expandingArea > pre {
	154	display: block;
	155	/* Hide the text; just using it for sizing */
	156	visibility: hidden;
	157	}
	158	/* END expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */
	159
0248a518 SW	160	/]]>/--></style>
0248a518 SW	161	<script type="text/javascript"><!--//--><![CDATA[//><!--
b669fb70	162	var servers = ['chkno.net', 'rc2.chkno.net', 'reliablechat-chk.rhcloud.com:80', 'intense-basin-3395.herokuapp.com:80', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];
0248a518	163
da9ce2ab	164	var session = Math.random(); // For outgoing message IDs
869430fa SW	165	var since = {}; // server -> time: For fetch?since=
869430fa SW	166	var seen = {}; // seen_key -> message
7f54ca0a	167	var history = []; // List of messages sorted by Time
5419ea4c	168	// Messages have these fields:
40380bd3	169	// Time: The timestamp. Median of ServerTimes
5419ea4c SW	170	// ID: Some unique string for deduping
5419ea4c SW	171	// Text: The text of the message
705e26cf	172	// ServerTimes: server -> timestamp
5419ea4c	173	// UI: The DOM node for this message in the UI
0248a518 SW	174
	175	function rcnick() {
	176	var nick = localStorage.getItem("nick");
	177	if (nick) {
	178	return nick;
	179	}
	180	return 'anonymous';
	181	}
	182
	183	function rcsetnick(new_nick) {
	184	localStorage.setItem("nick", new_nick);
	185	}
	186
	187	function rcserverbase(server) {
	188	// Add the default port if server doesn't contain a port number already
	189	if (server.indexOf(":") == -1) {
	190	return "http://" + server + ":21059";
	191	} else {
	192	return "http://" + server;
	193	}
	194	}
	195
	196	function rcchangeserverstatus(server, new_status) {
	197	var statusbar = document.getElementById("status");
	198	var spans = statusbar.getElementsByTagName("span");
	199	for (var i in spans) {
	200	if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
	201	spans[i].setAttribute("class", new_status);
	202	}
	203	}
	204	}
	205
66b29e97 SW	206	function rcpad2(x) {
	207	return (x < 10 ? "0" : "") + x;
	208	}
	209	function rcpad3(x) {
	210	return (x < 10 ? "00" : (x < 100 ? "0" : "")) + x;
	211	}
	212
bd1ed9dd SW	213	function rcformattime(t) {
	214	var d = t.getDay();
	215	d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d];
	216	var h = t.getHours();
	217	var m = t.getMinutes();
	218	var s = t.getSeconds();
66b29e97	219	return d + " " + rcpad2(h) + ":" + rcpad2(m) + ":" + rcpad2(s);
bd1ed9dd SW	220	}
bd1ed9dd SW	221
244a78af SW	222	function rcaddservertimestamptohover(message, server) {
244a78af SW	223	var divs = message.UI.getElementsByTagName("div");
66b29e97	224	var t = message.ServerTimes[server];
244a78af SW	225	for (var i in divs) {
	226	if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") {
	227	var d = document.createElement("div");
66b29e97 SW	228	var text = t.getFullYear() + "-" +
	229	rcpad2(t.getMonth()) + "-" +
	230	rcpad2(t.getDay()) + " " +
	231	rcformattime(t) + "." +
	232	rcpad3(t.getMilliseconds()) + " " +
	233	server;
244a78af SW	234	d.appendChild(document.createTextNode(text));
	235	divs[i].appendChild(d);
	236	}
	237	}
	238	}
	239
bf8f6a39 SW	240	function rcmakemessageUI(message) {
	241	message.UI = document.createElement("div");
	242
	243	// Server count
	244	var servercount = document.createElement("span");
	245	servercount.setAttribute("class", "servercount");
	246	servercount.appendChild(document.createTextNode(Object.keys(message.ServerTimes).length));
	247	message.UI.appendChild(servercount);
33fdb071	248	message.UI.appendChild(document.createTextNode(" "));
bf8f6a39 SW	249
	250	// Timestamp
	251	var timestamp_text = message.Time ? rcformattime(message.Time) : "";
	252	var timestamp = document.createElement("span");
	253	timestamp.setAttribute("class", "timestamp");
	254	timestamp.appendChild(document.createTextNode(timestamp_text));
	255	message.UI.appendChild(timestamp);
33fdb071	256	message.UI.appendChild(document.createTextNode(" "));
bf8f6a39	257
244a78af SW	258	// Timestamp hover
	259	var timestamp_hover = document.createElement("div");
	260	timestamp_hover.setAttribute("class", "servertimestamps");
	261	timestamp.appendChild(timestamp_hover);
	262	for (var server in message.ServerTimes) {
	263	rcaddservertimestamptohover(message, server);
	264	}
	265
3a89c414 SW	266	// Classify different message types
	267	var text_span = document.createElement("span");
	268	var type;
	269	if (/^\\\* /.test(message.Text)) {
	270	type = "status";
	271	} else if (/^\* /.test(message.Text)) {
	272	type = "me";
c301e690 SW	273	} else if (/^-!- /.test(message.Text)) {
c301e690 SW	274	type = "local";
3a89c414 SW	275	} else {
	276	type = "text";
	277	}
	278	if (Object.keys(message.ServerTimes).length == 0) {
	279	type += " self";
	280	}
	281	text_span.setAttribute("class", type);
e04a2cfd SW	282
	283	// URL detection
	284	var text = message.Text;
	285	var URL_re = /\bhttps?:\/\/\S+/;
	286	while (URL_re.test(text)) {
	287	var match = URL_re.exec(text);
	288	var leading_text = text.substr(0, match.index);
	289	if (leading_text) {
	290	text_span.appendChild(document.createTextNode(leading_text));
	291	}
	292	var anchor = document.createElement("a");
606c01e1	293	anchor.setAttribute("rel", "nofollow");
e04a2cfd SW	294	anchor.setAttribute("href", encodeURI(match[0]));
	295	anchor.appendChild(document.createTextNode(match[0]));
	296	text_span.appendChild(anchor);
	297	text = text.substr(match.index + match[0].length);
	298	}
	299	if (text) {
	300	text_span.appendChild(document.createTextNode(text));
	301	}
	302
3a89c414	303	message.UI.appendChild(text_span);
bf8f6a39 SW	304	}
bf8f6a39 SW	305
0248a518	306	function rcaddmessagetohistory(message) {
7f54ca0a SW	307	var message_i;
	308	if (message.Time) {
	309	for (var i = history.length - 1; ; i--) {
	310	if (i < 0 \|\| (history[i].Time && message.Time >= history[i].Time)) {
	311	message_i = i+1;
	312	history.splice(message_i, 0, message);
	313	break;
	314	}
	315	}
	316	} else {
	317	history.push(message);
	318	message_i = history.length-1;
	319	}
16f7340b SW	320	if (message_i + 1 < history.length) {
	321	rcaddmessagetoUI(message, history[message_i + 1].UI);
	322	} else {
	323	rcaddmessagetoUI(message, null);
	324	}
	325	}
7f54ca0a	326
16f7340b	327	function rcaddmessagetoUI(message, before) {
95ba71ee	328	if (!message.UI) {
bf8f6a39	329	rcmakemessageUI(message);
95ba71ee	330	}
0248a518	331	var h = document.getElementById("history");
16f7340b SW	332	if (before) {
16f7340b SW	333	h.insertBefore(message.UI, before);
7f54ca0a SW	334	} else {
	335	h.appendChild(message.UI);
	336	}
0248a518	337	window.scrollTo(0, document.body.scrollHeight);
0248a518 SW	338	}
	339
	340	function make_seen_key(id, text) {
	341	return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
	342	}
	343
40380bd3 SW	344	function rcupdatemessagetime(message) {
	345	// Set message.Time to be the median of message.ServerTimes
	346	var times = [];
	347	for (var i in message.ServerTimes) {
	348	times.push(message.ServerTimes[i]);
	349	}
	350	times.sort();
40380bd3	351	if (times.length % 2) {
ac4bf273	352	message.Time = times[(times.length-1)/2];
40380bd3	353	} else {
ac4bf273	354	var middle = times.length/2;
40380bd3 SW	355	var difference = times[middle].getTime() - times[middle-1].getTime();
	356	message.Time = new Date(times[middle-1].getTime() + difference/2);
	357	}
95ba71ee SW	358
	359	// This may have broken history's in-sorted-order invariant
	360	var hi = history.indexOf(message);
	361	if ((history[hi-1] && history[hi-1].Time > message.Time) \|\|
	362	(history[hi+1] && history[hi+1].Time < message.Time)) {
	363	history.splice(hi,1);
	364	rcaddmessagetohistory(message);
	365	}
5be4c8ec SW	366
	367	// Update the UI
	368	var spans = message.UI.getElementsByTagName("span");
	369	for (var i in spans) {
c0aac85a SW	370	if (spans[i].getAttribute) {
	371	var type = spans[i].getAttribute("class");
	372	if (type == "servercount") {
	373	spans[i].firstChild.data = Object.keys(message.ServerTimes).length;
	374	} else if (type == "timestamp") {
	375	spans[i].firstChild.data = rcformattime(message.Time);
	376	}
5be4c8ec SW	377	}
5be4c8ec SW	378	}
40380bd3 SW	379	}
40380bd3 SW	380
79ced6f1 SW	381	function rcreceivemessages(server, messages) {
79ced6f1 SW	382	for (var i in messages) {
ad35b1be	383	var m = messages[i];
bd1ed9dd	384	m.Time = new Date(m.Time);
ad35b1be	385	var seen_key = make_seen_key(m.ID, m.Text);
705e26cf SW	386	if (seen_key in seen) {
705e26cf SW	387	seen[seen_key].ServerTimes[server] = m.Time;
40380bd3	388	rcupdatemessagetime(seen[seen_key]);
244a78af	389	rcaddservertimestamptohover(seen[seen_key], server);
705e26cf	390	} else {
16640c5d SW	391	m.ServerTimes = {};
16640c5d SW	392	m.ServerTimes[server] = m.Time;
869430fa	393	seen[seen_key] = m;
ad35b1be	394	rcaddmessagetohistory(m);
79ced6f1 SW	395	for (var i in servers) {
	396	rcchangeserverstatus(servers[i], "sad");
	397	}
0248a518	398	}
79ced6f1	399	rcchangeserverstatus(server, "happy");
0248a518	400	}
0248a518 SW	401	}
0248a518 SW	402
79ced6f1 SW	403	function rcfetch(server) {
	404	var delay = 10000; // TODO: Exponential backoff
	405	var xhr = new XMLHttpRequest();
	406	xhr.onreadystatechange = function() {
	407	if (this.readyState == this.DONE) {
	408	if (this.status == 200) {
	409	var rtxt = this.responseText;
	410	if (rtxt != null) {
	411	var messages = JSON.parse(rtxt);
	412	if (messages != null) {
79ced6f1 SW	413	delay = 40;
79ced6f1 SW	414	if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
ad35b1be	415	since[server] = messages[messages.length-1].Time;
79ced6f1	416	}
92ca5f8a	417	rcreceivemessages(server, messages);
79ced6f1	418	}
0248a518 SW	419	}
0248a518 SW	420	}
79ced6f1	421	window.setTimeout(rcfetch, delay, server);
0248a518 SW	422	}
0248a518 SW	423	}
79ced6f1 SW	424	var uri = rcserverbase(server) + "/fetch";
	425	if (server in since) {
	426	uri += '?since="' + since[server] + '"';
	427	}
	428	xhr.open("GET", uri);
	429	xhr.send();
0248a518 SW	430	}
	431
	432	function rcconnect() {
19724ebd	433	makeExpandingArea(document.getElementById("expando"));
0248a518	434	for (var i in servers) {
79ced6f1	435	rcfetch(servers[i]);
0248a518 SW	436	// Status bar entry
	437	var status_indicator = document.createElement("span");
	438	status_indicator.appendChild(document.createTextNode(servers[i]));
	439	status_indicator.setAttribute("class", "sad");
	440	document.getElementById("status").appendChild(status_indicator);
	441	}
0248a518 SW	442	}
	443
	444	function rcsend(d, message) {
7f54ca0a SW	445	message.ID = new Date().getTime() + "-" + session + "-" + Math.random();
7f54ca0a SW	446	seen[make_seen_key(message.ID, message.Text)] = message;
0248a518	447	var path = "/speak" +
7f54ca0a SW	448	"?id=" + encodeURIComponent(message.ID) +
7f54ca0a SW	449	"&text=" + encodeURIComponent(message.Text);
0248a518	450	for (var i in servers) {
9878d03b SW	451	var xhr = new XMLHttpRequest();
	452	xhr.open("POST", rcserverbase(servers[i]) + path);
	453	xhr.send();
0248a518 SW	454	}
	455	}
	456
5a6c082a SW	457	function rcinput(input) {
5a6c082a SW	458	var message;
219b6a2b	459	var re = /^\/(\S+)(\s(.*))?/;
5a6c082a	460	var match = re.exec(input);
16f7340b	461	if (match) {
112df9d1 SW	462	var command = match[1];
	463	var rest = match[3];
	464	if (command == 'me') {
	465	message = "* " + rcnick() + " " + rest;
	466	} else if (command == 'nick') {
219b6a2b SW	467	if (rcnick() == rest) {
	468	rcaddmessagetoUI({'Text': '-!- Your nick is already ' + rcnick(), 'ServerTimes': {}});
	469	return;
	470	}
112df9d1 SW	471	message = "*** " + rcnick() + " is now known as " + rest;
112df9d1 SW	472	rcsetnick(rest);
16f7340b	473	} else {
112df9d1	474	rcaddmessagetoUI({'Text': '-!- No such command: ' + command, 'ServerTimes': {}});
16f7340b SW	475	return;
16f7340b SW	476	}
5a6c082a SW	477	} else {
	478	message = "<" + rcnick() + "> " + input;
	479	}
	480
7f54ca0a	481	var m = {'Text': message, 'ServerTimes': {}};
869430fa SW	482	rcaddmessagetohistory(m);
869430fa SW	483	rcsend(m.UI, m);
5a6c082a SW	484	}
5a6c082a SW	485
0248a518 SW	486	function rckeydown(event) {
0248a518 SW	487	if (event.keyCode == 13) {
cf44a976 SW	488	if (document.input.say.value) {
	489	rcinput(document.input.say.value);
	490	}
0248a518	491	document.input.say.value = "";
19724ebd SW	492	return false;
	493	}
	494	}
	495
	496	// From http://www.alistapart.com/articles/expanding-text-areas-made-elegant/
	497	function makeExpandingArea(container) {
	498	var area = container.querySelector('textarea');
	499	var span1 = container.querySelector('span');
	500	var span2 = document.getElementById('historypad');
	501	if (area.addEventListener) {
	502	area.addEventListener('input', function() {
	503	span1.textContent = area.value;
	504	span2.textContent = area.value;
	505	}, false);
	506	span1.textContent = area.value;
	507	span2.textContent = area.value;
	508	} else if (area.attachEvent) {
	509	// IE8 compatibility
	510	area.attachEvent('onpropertychange', function() {
	511	span1.innerText = area.value;
	512	span2.innerText = area.value;
	513	});
	514	span1.innerText = area.value;
	515	span2.innerText = area.value;
0248a518 SW	516	}
	517	}
	518	//--><!]]></script>
	519
827f21bb SW	520	</head>
827f21bb SW	521
f0e385c7	522	<body onload="rcconnect()">
70f46223	523	<div id="container">
5afebfc6	524	<div class="banner">(You are using <a href="https://github.com/chkno/reliable-chat">Reliable Chat</a>)</div>
70f46223	525	<div id="history"></div>
19724ebd SW	526	<div class="expandingArea" style="visibility: hidden">
	527	<pre><span id="historypad"></span><br></pre>
	528	</div>
70f46223 JH	529	<div id="client">
	530	<div id="input">
	531	<form name="input" onsubmit="return false" autocomplete="off">
19724ebd SW	532	<div id="expando" class="expandingArea">
	533	<pre><span></span><br></pre>
	534	<textarea id="say" onkeydown="return rckeydown(event)" autofocus="autofocus"></textarea>
	535	</div>
70f46223	536	</form></div>
19724ebd	537	<div id="status"></div>
70f46223 JH	538	</div>
70f46223 JH	539	</div>
827f21bb SW	540	</body>
827f21bb SW	541	</html>