xp-dev.com Git - namibia/blob - public/js/vendor/ape-source/Transport/Transport.longPolling.js

   1 Request = new Class({
   2
   3         Extends: Request,
   4
   5         send: function(options) {
   6                 //mootools set onreadystatechange after xhr.open, in webkit, this cause readyState 1 to be never fired
   7                 if (Browser.Engine.webkit) this.xhr.onreadystatechange = this.onStateChange.bind(this);
   8                 return this.parent(options);
   9         },
  10
  11         onStateChange: function() {
  12                 if (this.xhr.readyState == 1) this.dataSent = true;
  13                 this.parent();
  14         }
  15 });
  16
  17 APE.Transport.longPolling = new Class({
  18
  19         initialize: function(ape) {
  20                 this.ape = ape;
  21                 this.requestFailObserver = [];
  22         },
  23
  24         send: function(queryString, options) {
  25                 var request = new Request({
  26                         url: this.ape.serverUri,
  27                         onFailure: this.ape.requestFail.bind(this.ape, [-2, this]),
  28                         onComplete: function(resp) {
  29                                 $clear(this.requestFailObserver.shift());
  30                                 this.ape.parseResponse(resp, options.requestCallback);
  31                         }.bind(this)
  32                 }).send(queryString);
  33                 request.id = $time();
  34
  35                 this.request = request;
  36
  37                 this.requestFailObserver.push(this.ape.requestFail.delay(this.ape.options.pollTime + 10000, this.ape, [-1, request]));
  38
  39                 return request;
  40         },
  41
  42         running: function() {
  43                 return this.request ? this.request.running : false;
  44         },
  45
  46         cancel: function() {
  47                 if (this.request) this.request.cancel();
  48                 $clear(this.requestFailObserver.shift());
  49         }
  50 });
  51
  52 APE.Transport.longPolling.browserSupport = function() { return Browser.Features.xhr ? true : 2; };