/[meteor]/googlecode.com/svn/trunk/public_html/meteor.js
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Diff of /googlecode.com/svn/trunk/public_html/meteor.js

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revision 14 by andrew.betts, Mon Apr 30 18:38:55 2007 UTC revision 20 by andrew.betts, Sat May 5 15:04:41 2007 UTC
# Line 19  Function.prototype.andThen=function(g) { Line 19  Function.prototype.andThen=function(g) {
19    
20  function Meteor(instID) {  function Meteor(instID) {
21    
         this.lastmsgreceived = -1;  
22          this.transferDoc = false;          this.transferDoc = false;
23          this.pingtimer = false;          this.pingtimer = false;
24          this.updatepollfreqtimer = false;          this.updatepollfreqtimer = false;
25          this.lastrequest = 0;          this.lastrequest = 0;
26          this.recvtimes = new Array();          this.recvtimes = [];
27          this.MHostId = false;          this.MHostId = false;
28          this.callback_process = function() {};          this.callback_process = function() {};
29          this.callback_reset = function() {};          this.callback_reset = function() {};
# Line 33  function Meteor(instID) { Line 32  function Meteor(instID) {
32          this.callback_statuschanged = function() {};          this.callback_statuschanged = function() {};
33          this.persist = true;          this.persist = true;
34          this.frameloadtimer = false;          this.frameloadtimer = false;
         this.frameurl = false;  
35          this.debugmode = false;          this.debugmode = false;
36            this.subsurl = false;
37            this.channels = {};
38    
39          // Documented public properties          // Documented public properties
         this.channel = false;  
40          this.subdomain = "data";          this.subdomain = "data";
41          this.dynamicpageaddress = "push";          this.dynamicpageaddress = "push";
         this.backtrack = 0;  
42          this.smartpoll = true;          this.smartpoll = true;
43          this.pollfreq = 2000;          this.pollfreq = 2000;
44          this.minpollfreq = 2000;          this.minpollfreq = 2000;
45          this.mode = "poll";          this.mode = "poll";
46          this.polltimeout=30000;          this.polltimeout=30000;
         this.maxmessages=0;  
47          this.pingtimeout = 10000;          this.pingtimeout = 10000;
48            this.maxmessages = 0;
49          this.status = 0;          this.status = 0;
50    
51          /* Statuses:    0 = Uninitialised,          /* Statuses:    0 = Uninitialised,
# Line 83  Meteor.register = function(ifr) { Line 81  Meteor.register = function(ifr) {
81          if (this.debugmode) console.log("Frame registered");          if (this.debugmode) console.log("Frame registered");
82  }  }
83    
84    Meteor.reset = function(ifr) {
85            instid = new String(ifr.window.frameElement.id);
86            instid = instid.replace(/.*_([0-9]*)$/, "$1");
87            this.instances[instid].reset();
88    }
89    
90    Meteor.prototype.joinChannel = function(channelname, backtrack) {
91            if (typeof(this.channels[channelname]) != "undefined") throw "Cannot join channel "+channelname+": already subscribed";
92            this.channels[channelname] = {backtrack:backtrack, lastmsgreceived:0};
93            if (this.debugmode) console.log("Joined channel "+channelname+", channel list follows");
94            if (this.debugmode) console.log(this.channels);
95            if (this.status != 0) this.start();
96    }
97    
98    Meteor.prototype.leaveChannel = function(channelname) {
99            if (typeof(this.channels[channelname]) == "undefined") throw "Cannot leave channel "+channelname+": not subscribed";
100            delete this.channels[channelname];
101            if (this.status != 0) this.start();
102    }
103    
104  Meteor.prototype.start = function() {  Meteor.prototype.start = function() {
105          this.persist = (this.maxmessages)?1:0;          this.persist = (this.maxmessages)?1:0;
106          this.smartpoll = (this.smartpoll)?1:0;          this.smartpoll = (this.smartpoll)?1:0;
107          this.mode = (this.mode=="stream")?"stream":"poll";          this.mode = (this.mode=="stream")?"stream":"poll";
108          if (!this.subdomain || !this.channel) throw "Channel or Meteor subdomain host not specified";          if (!this.subdomain || this.channels.length) throw "Channel or Meteor subdomain host not specified";
109          this.stop();          this.stop();
110          var now = new Date();          var now = new Date();
111          var t = now.getTime();          var t = now.getTime();
112          this.setstatus(1);          this.setstatus(1);
113          if (this.mode=="stream") {          var surl = "http://" + this.subdomain + "." + location.hostname + "/" + this.dynamicpageaddress + "?id=" + this.MHostId;
114                  var surl = "http://"+this.subdomain+"."+location.hostname+"/"+this.dynamicpageaddress+"?channel="+this.channel+"&id="+this.MHostId;          if (this.maxmessages && !this.persist) surl += "&maxmessages=" + this.maxmessages;
115                  if (this.lastmsgreceived >= 0) {          for (var c in this.channels) {
116                          surl += "&restartfrom="+this.lastmsgreceived;                  surl += "&channel="+c;
117                  } else if (this.backtrack > 0) {                  if (this.channels[c].lastmsgreceived >= 0) {
118                          surl += "&backtrack="+this.backtrack;                          surl += "&restartfrom="+this.channels[c].lastmsgreceived;
119                  } else if (this.backtrack < 0 || isNaN(this.backtrack)) {                  } else if (this.channels[c].backtrack > 0) {
120                            surl += "&backtrack="+this.channels[c].backtrack;
121                    } else if (this.channels[c].backtrack < 0 || isNaN(this.channels[c].backtrack)) {
122                          surl += "&restartfrom=";                          surl += "&restartfrom=";
123                  }                  }
124                  this.createIframe(surl);          }
125            this.subsurl = surl;
126            if (this.mode=="stream") {
127                    this.createIframe(this.subsurl);
128                  var f = this.pollmode.bind(this);                  var f = this.pollmode.bind(this);
129                  clearTimeout(this.pingtimer);                  clearTimeout(this.pingtimer);
130                  this.pingtimer = setTimeout(f, this.pingtimeout);                  this.pingtimer = setTimeout(f, this.pingtimeout);
# Line 122  Meteor.prototype.createIframe = function Line 145  Meteor.prototype.createIframe = function
145                  this.transferDoc.write("<html>");                  this.transferDoc.write("<html>");
146                  this.transferDoc.write("<script>document.domain=\""+(document.domain)+"\";</"+"script>");                  this.transferDoc.write("<script>document.domain=\""+(document.domain)+"\";</"+"script>");
147                  this.transferDoc.write("</html>");                  this.transferDoc.write("</html>");
                 var selfref = this;  
148                  this.transferDoc.parentWindow.Meteor = Meteor;                  this.transferDoc.parentWindow.Meteor = Meteor;
149                  this.transferDoc.close();                  this.transferDoc.close();
150                  var ifrDiv = this.transferDoc.createElement("div");                  var ifrDiv = this.transferDoc.createElement("div");
# Line 166  Meteor.prototype.stop = function() { Line 188  Meteor.prototype.stop = function() {
188    
189  Meteor.prototype.pollmode = function() {  Meteor.prototype.pollmode = function() {
190          if (this.debugmode) console.log("Ping timeout");          if (this.debugmode) console.log("Ping timeout");
         this.stop();  
191          this.mode="poll";          this.mode="poll";
192          this.start();          this.start();
193          this.callback_changemode("poll");          this.callback_changemode("poll");
194          this.lastpingtime = false;          this.lastpingtime = false;
195  }  }
196    
197  Meteor.prototype.process = function(id, data, timestamp) {  Meteor.prototype.process = function(id, channel, data) {
198          if (id > this.lastmsgreceived) {          if (id == -1) {
199                  this.callback_process(data, timestamp);                  if (this.debugmode) console.log("Ping");
200                  if (id != -1) this.lastmsgreceived = id;                  this.ping();
201            } else if (typeof(this.channels[channel]) != "undefined" && id > this.channels[channel].lastmsgreceived) {
202                    if (this.debugmode) console.log("Message "+id+" received on channel "+channel+" (last id on channel: "+this.channels[channel].lastmsgreceived+")\n"+data);
203                    this.callback_process(data);
204                    this.channels[channel].lastmsgreceived = id;
205                  if (this.mode=="poll") {                  if (this.mode=="poll") {
206                          var now = new Date();                          var now = new Date();
207                          var t = now.getTime();                          var t = now.getTime();
208                          this.recvtimes[this.recvtimes.length] = t;                          this.recvtimes[this.recvtimes.length] = t;
209                          while (this.recvtimes.length > 5) this.recvtimes.shift();                          while (this.recvtimes.length > 5) this.recvtimes.shift();
210                  }                  }
         } else if (id == -1) {  
                 this.ping();  
211          }          }
212          this.setstatus(5);          this.setstatus(5);
213  }  }
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