git.scottworley.com Git - reliable-chat/blob - webclient/rc.js

   1 var servers = ['chkno.net', 'rc2.chkno.net', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];
   2
   3 var session = Math.random();
   4 var seen = {};
   5
   6 function rcserverbase(server) {
   7         // Add the default port if server doesn't contain a port number already
   8         if (server.indexOf(":") == -1) {
   9                 return "http://" + server + ":21059";
  10         } else {
  11                 return "http://" + server;
  12         }
  13 }
  14
  15 function rcchangeserverstatus(server, new_status) {
  16         var statusbar = document.getElementById("status");
  17         var spans = statusbar.getElementsByTagName("span");
  18         for (i in spans) {
  19                 if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
  20                         spans[i].setAttribute("class", new_status);
  21                 }
  22         }
  23 }
  24
  25 function rcaddmessagetohistory(message) {
  26         var d = document.createElement("div");
  27         d.appendChild(document.createTextNode(message));
  28         var h = document.getElementById("history");
  29         h.appendChild(d);
  30         window.scrollTo(0, document.body.scrollHeight);
  31         return d;
  32 }
  33
  34 function make_seen_key(id, text) {
  35         return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
  36 }
  37
  38 function receiveMessage(server, time, id, text) {
  39         var seen_key = make_seen_key(id, text);
  40         if (!(seen_key in seen)) {
  41                 seen[seen_key] = true;
  42                 rcaddmessagetohistory(text);
  43                 for (i in servers) {
  44                         rcchangeserverstatus(servers[i], "sad");
  45                 }
  46         }
  47         rcchangeserverstatus(server, "happy");
  48 }
  49
  50 function receiveMessageEvent(event)
  51 {
  52         for (i in servers) {
  53                 if (event.origin === rcserverbase(servers[i])) {
  54                         messages = JSON.parse(event.data);
  55                         for (j in messages) {
  56                                 if ('Time' in messages[j] &&
  57                                     'ID'   in messages[j] &&
  58                                     'Text' in messages[j]) {
  59                                         receiveMessage(servers[i], messages[j]['Time'], messages[j]['ID'], messages[j]['Text']);
  60                                 }
  61                         }
  62                 }
  63         }
  64 }
  65
  66 function rcconnect() {
  67         window.addEventListener("message", receiveMessageEvent, false);
  68         for (i in servers) {
  69                 // Create a hidden iframe for same-origin workaround
  70                 var iframe = document.createElement("iframe");
  71                 iframe.setAttribute("src", rcserverbase(servers[i]) + "/frame");
  72                 document.body.insertBefore(iframe, document.body.firstChild);
  73                 // Status bar entry
  74                 var status_indicator = document.createElement("span");
  75                 status_indicator.appendChild(document.createTextNode(servers[i]));
  76                 status_indicator.setAttribute("class", "sad");
  77                 document.getElementById("status").appendChild(status_indicator);
  78         }
  79 }
  80
  81 function rcsend(d, message) {
  82         var id = new Date().getTime() + "-" + session + "-" + Math.random();
  83         seen[make_seen_key(id, message)] = true;
  84         var path = "/speak" +
  85                 "?id=" + encodeURIComponent(id) +
  86                 "&text=" + encodeURIComponent(message);
  87         for (i in servers) {
  88                 var uri = rcserverbase(servers[i]) + path;
  89                 var img = document.createElement("img");
  90                 img.setAttribute("src", uri);
  91                 d.appendChild(img);
  92         }
  93 }
  94
  95 function rckeydown(event) {
  96         if (event.keyCode == 13) {
  97                 var d = rcaddmessagetohistory(document.input.say.value);
  98                 rcsend(d, document.input.say.value);
  99                 document.input.say.value = "";
 100                 return false;
 101         }
 102 }