The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 "use strict";

 var self = require("sdk/self");

 var { Panel } = require("sdk/panel");

 var { ToggleButton } = require("sdk/ui");

 function replaceMom(html) {

   return html.replace("World", "Mom");

 }

 exports.replaceMom = replaceMom;

 exports.main = function(options, callbacks) {

   console.log("My ID is " + self.id);

   // Load the sample HTML into a string.

   var helloHTML = self.data.load("sample.html");

   // Let's now modify it...

   helloHTML = replaceMom(helloHTML);

   // ... and then create a panel that displays it.

   var myPanel = Panel({

     contentURL: "data:text/html," + helloHTML,

     onHide: handleHide

   });

   // Create a widget that displays the image.  We'll attach the panel to it.

   // When you click the widget, the panel will pop up.

   var button = ToggleButton({

     id: "test-widget",

     label: "Mom",

     icon: './mom.png',

     onChange: handleChange

   });

   // If you run cfx with --static-args='{"quitWhenDone":true}' this program

   // will automatically quit Firefox when it's done.

   if (options.staticArgs.quitWhenDone)

     callbacks.quit();

 }

 function handleChange(state) {

   if (state.checked) {

     myPanel.show({ position: button });

   }

 }

 function handleHide() {

   button.state('window', { checked: false });

 }