receiver.api.js

/*
* Author:         Amr Numan Tamimi <amrnt0@gmail.com>
* Extracted from: Foursquare.com
* Last Modify:    1/3/2011
*/

(function() {
  var iframeManager;

  iframeManager = {
    xhrCallback: null,
    iframeLoading: !1,
    loadQueue: [],
    addLoadCallback: function(a) {
      if (iframeManager.isLoaded()) {
        return a();
      } else {
        return iframeManager.loadQueue.push(a);
      }
    },
    runLoadCallbacks: function() {
      var a, _i, _len, _ref, _results;
      _ref = iframeManager.loadQueue;
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        a = _ref[_i];
        _results.push(a());
      }
      return _results;
    },
    isLoaded: function() {
      return null !== iframeManager.xhrCallback;
    },
    buildIframe: function(apiServer) {
      var a, b, c;
      if (!iframeManager.iframeLoading) {
        iframeManager.iframeLoading = !0;
        a = document.createElement("div");
        b = "" + apiServer + "receiver.html?parent=" + (encodeURIComponent(window.location.href));
        a.innerHTML = "<iframe onload=\"window._tempIframeCallback()\" id=\"receiver_iframe\" tabindex=\"-1\" role=\"presentation\" style=\"position:absolute;top:-9999px;\" src=\"" + b + "\"></iframe>";
        c = a.firstChild;
        window._tempIframeCallback = function() {
          delete api._tempIframeCallback;
          iframeManager.xhrCallback = window.XMLHttpRequest && ("file:" !== window.location.protocol || !window.ActiveXObject) ? function() {
            return new c.contentWindow.XMLHttpRequest;
          } : function() {
            try {
              return new c.contentWindow.ActiveXObject("Microsoft.XMLHTTP");
            } catch (_error) {}
          };
          return iframeManager.runLoadCallbacks();
        };
        return document.body.appendChild(c);
      }
    }
  };

  window.iframeManager = iframeManager;

}).call(this);