The Tor Browser / file revision

 this.EXPORTED_SYMBOLS = [ "PromptUtils" ];

 const Cc = Components.classes;

 const Ci = Components.interfaces;

 const Cr = Components.results;

 const Cu = Components.utils;

 this.PromptUtils = {

     // Fire a dialog open/close event. Used by tabbrowser to focus the

     // tab which is triggering a prompt.

     // For remote dialogs, we pass in a different DOM window and a separate

     // target. If the caller doesn't pass in the target, then we'll simply use

     // the passed-in DOM window.

     fireDialogEvent : function (domWin, eventName, maybeTarget) {

         let target = maybeTarget || domWin;

         let event = domWin.document.createEvent("Events");

         event.initEvent(eventName, true, true);

         let winUtils = domWin.QueryInterface(Ci.nsIInterfaceRequestor)

                              .getInterface(Ci.nsIDOMWindowUtils);

         winUtils.dispatchEventToChromeOnly(target, event);

     },

     objectToPropBag : function (obj) {

         let bag = Cc["@mozilla.org/hash-property-bag;1"].

                   createInstance(Ci.nsIWritablePropertyBag2);

         bag.QueryInterface(Ci.nsIWritablePropertyBag);

         for (let propName in obj)

             bag.setProperty(propName, obj[propName]);

         return bag;

     },

     propBagToObject : function (propBag, obj) {

         // Here we iterate over the object's original properties, not the bag

         // (ie, the prompt can't return more/different properties than were

         // passed in). This just helps ensure that the caller provides default

         // values, lest the prompt forget to set them.

         for (let propName in obj)

             obj[propName] = propBag.getProperty(propName);

     },

 };