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
   4 <html xmlns="http://www.w3.org/1999/xhtml">
   5 <head>
   6  <title>Reliable Chat</title>
   7   <style type="text/css"><!--/*--><![CDATA[/*><!--*/
   8         html, body, #outer-table, #history { width: 99.9%; height: 100%; margin: 0; padding: 0 }
   9         #status { background-color: #eef }
  10         #say { width: 100% }
  11         #history { vertical-align: bottom }
  12         img { width: 1px; height: 1px; }
  13         iframe { display: none }
  14         #status span { margin-right: 2em }
  15         #status span.sad { background-color: #fee }
  16         #status span.happy { background-color: #efe }
  17   /*]]>*/--></style>
  18   <script type="text/javascript"><!--//--><![CDATA[//><!--
  19         var servers = ['chkno.net', 'rc2.chkno.net', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];
  20
  21         var session = Math.random();
  22         var since = {};
  23         var seen = {};
  24
  25         function rcnick() {
  26                 var nick = localStorage.getItem("nick");
  27                 if (nick) {
  28                         return nick;
  29                 }
  30                 return 'anonymous';
  31         }
  32
  33         function rcsetnick(new_nick) {
  34                 localStorage.setItem("nick", new_nick);
  35         }
  36
  37         function rcserverbase(server) {
  38                 // Add the default port if server doesn't contain a port number already
  39                 if (server.indexOf(":") == -1) {
  40                         return "http://" + server + ":21059";
  41                 } else {
  42                         return "http://" + server;
  43                 }
  44         }
  45
  46         function rcchangeserverstatus(server, new_status) {
  47                 var statusbar = document.getElementById("status");
  48                 var spans = statusbar.getElementsByTagName("span");
  49                 for (var i in spans) {
  50                         if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
  51                                 spans[i].setAttribute("class", new_status);
  52                         }
  53                 }
  54         }
  55
  56         function rcaddmessagetohistory(message) {
  57                 var d = document.createElement("div");
  58                 d.appendChild(document.createTextNode(message));
  59                 var h = document.getElementById("history");
  60                 h.appendChild(d);
  61                 window.scrollTo(0, document.body.scrollHeight);
  62                 return d;
  63         }
  64
  65         function make_seen_key(id, text) {
  66                 return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
  67         }
  68
  69         function rcreceivemessages(server, messages) {
  70                 for (var i in messages) {
  71                         var seen_key = make_seen_key(messages[i]['ID'], messages[i]['Text']);
  72                         if (!(seen_key in seen)) {
  73                                 seen[seen_key] = true;
  74                                 rcaddmessagetohistory(messages[i]['Text']);
  75                                 for (var i in servers) {
  76                                         rcchangeserverstatus(servers[i], "sad");
  77                                 }
  78                         }
  79                         rcchangeserverstatus(server, "happy");
  80                 }
  81         }
  82
  83         function rcfetch(server) {
  84                 var delay = 10000;  // TODO: Exponential backoff
  85                 var xhr = new XMLHttpRequest();
  86                 xhr.onreadystatechange = function() {
  87                         if (this.readyState == this.DONE) {
  88                                 if (this.status == 200) {
  89                                         var rtxt = this.responseText;
  90                                         if (rtxt != null) {
  91                                                 var messages = JSON.parse(rtxt);
  92                                                 if (messages != null) {
  93                                                         rcreceivemessages(server, messages);
  94                                                         window.parent.postMessage(rtxt, "*");
  95                                                         delay = 40;
  96                                                         if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
  97                                                                 since[server] = messages[messages.length-1]["Time"];
  98                                                         }
  99                                                 }
 100                                         }
 101                                 }
 102                                 window.setTimeout(rcfetch, delay, server);
 103                         }
 104                 }
 105                 var uri = rcserverbase(server) + "/fetch";
 106                 if (server in since) {
 107                         uri += '?since="' + since[server] + '"';
 108                 }
 109                 xhr.open("GET", uri);
 110                 xhr.send();
 111         }
 112
 113         function rcconnect() {
 114                 for (var i in servers) {
 115                         rcfetch(servers[i]);
 116                         // Status bar entry
 117                         var status_indicator = document.createElement("span");
 118                         status_indicator.appendChild(document.createTextNode(servers[i]));
 119                         status_indicator.setAttribute("class", "sad");
 120                         document.getElementById("status").appendChild(status_indicator);
 121                 }
 122                 if (rcnick() == 'anonymous') {
 123                         rcaddmessagetohistory("-!- Set your nick with /nick");
 124                 }
 125         }
 126
 127         function rcsend(d, message) {
 128                 var id = new Date().getTime() + "-" + session + "-" + Math.random();
 129                 seen[make_seen_key(id, message)] = true;
 130                 var path = "/speak" +
 131                         "?id=" + encodeURIComponent(id) +
 132                         "&text=" + encodeURIComponent(message);
 133                 for (var i in servers) {
 134                         var uri = rcserverbase(servers[i]) + path;
 135                         var img = document.createElement("img");
 136                         img.setAttribute("src", uri);
 137                         d.appendChild(img);
 138                 }
 139         }
 140
 141         function rckeydown(event) {
 142                 if (event.keyCode == 13) {
 143                         var input = document.input.say.value;
 144                         document.input.say.value = "";
 145
 146                         // Check nick change
 147                         var message;
 148                         var re = /^\/nick (.*)/;
 149                         var match = re.exec(input);
 150                         if (match) {
 151                                 message = "*** " + rcnick() + " is now known as " + match[1];
 152                                 rcsetnick(match[1]);
 153                         } else {
 154                                 message = "<" + rcnick() + "> " + input;
 155                         }
 156
 157                         // Say the message
 158                         var d = rcaddmessagetohistory(message);
 159                         rcsend(d, message);
 160
 161                         // Remind people to set their nick
 162                         if (rcnick() == 'anonymous') {
 163                                 rcaddmessagetohistory("-!- Set your nick with /nick");
 164                         }
 165                 }
 166         }
 167   //--><!]]></script>
 168
 169 </head>
 170
 171 <body onload="rcconnect()">
 172         <table id="outer-table">
 173                 <tr><td id="history"></td></tr>
 174                 <tr><td id="status">&nbsp;</td></tr>
 175                 <tr><td><form name="input" onsubmit="return false" autocomplete="off">
 176                         <input id="say" onkeydown="return rckeydown(event)" autocomplete="off"></input>
 177                         </form></td></tr>
 178         </table>
 179 </body>
 180 </html>