var gearsObj = dojo.getObject("google.gears"); if(gearsObj){ return gearsObj; } // already defined elsewhere
if(typeof GearsFactory != "undefined"){ // Firefox factory = new GearsFactory(); }else{ if(dojo.isIE){ // IE try{ factory = new ActiveXObject("Gears.Factory"); }catch(e){ // ok to squelch; there's no gears factory. move on. } }else if(navigator.mimeTypes["application/x-googlegears"]){ // Safari? factory = document.createElement("object"); factory.setAttribute("type", "application/x-googlegears"); factory.setAttribute("width", 0); factory.setAttribute("height", 0); factory.style.display = "none"; document.documentElement.appendChild(factory); } }
// still nothing? if(!factory){ return null; }
// define the global objects now; don't overwrite them though if they // were somehow set internally by the Gears plugin, which is on their // dev roadmap for the future dojo.setObject("google.gears.factory", factory); return dojo.getObject("google.gears");
summary
factory method to get a Google Gears plugin instance to
expose in the browser runtime environment, if present