lib/dojo/gears.js.uncompressed.js

   1 define("dojo/gears", ["./_base/kernel", "./_base/lang", "./_base/sniff"],
   2         function(dojo, lang, has) {
   3         // module:
   4         //              dojo/gears
   5         // summary:
   6         //              TODOC
   7
   8 lang.getObject("gears", true, dojo);
   9
  10 dojo.gears._gearsObject = function(){
  11         // summary:
  12         //              factory method to get a Google Gears plugin instance to
  13         //              expose in the browser runtime environment, if present
  14         var factory;
  15
  16         var gearsObj = lang.getObject("google.gears");
  17         if(gearsObj){ return gearsObj; } // already defined elsewhere
  18
  19         if(typeof GearsFactory != "undefined"){ // Firefox
  20                 factory = new GearsFactory();
  21         }else{
  22                 if(has("ie")){
  23                         // IE
  24                         try{
  25                                 factory = new ActiveXObject("Gears.Factory");
  26                         }catch(e){
  27                                 // ok to squelch; there's no gears factory.  move on.
  28                         }
  29                 }else if(navigator.mimeTypes["application/x-googlegears"]){
  30                         // Safari?
  31                         factory = document.createElement("object");
  32                         factory.setAttribute("type", "application/x-googlegears");
  33                         factory.setAttribute("width", 0);
  34                         factory.setAttribute("height", 0);
  35                         factory.style.display = "none";
  36                         document.documentElement.appendChild(factory);
  37                 }
  38         }
  39
  40         // still nothing?
  41         if(!factory){ return null; }
  42
  43         // define the global objects now; don't overwrite them though if they
  44         // were somehow set internally by the Gears plugin, which is on their
  45         // dev roadmap for the future
  46         lang.setObject("google.gears.factory", factory);
  47         return lang.getObject("google.gears");
  48 };
  49
  50 /*=====
  51 dojo.gears.available = {
  52         // summary: True if client is using Google Gears
  53 };
  54 =====*/
  55 // see if we have Google Gears installed, and if
  56 // so, make it available in the runtime environment
  57 // and in the Google standard 'google.gears' global object
  58 dojo.gears.available = (!!dojo.gears._gearsObject())||0;
  59
  60 return dojo.gears;
  61 });