gecko-dev/dom/media/tests/mochitest/NetworkPreparationChromeScript.js

/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

const { classes: Cc, interfaces: Ci, results: Cr, utils: Cu } = Components;
const { Services } = Cu.import('resource://gre/modules/Services.jsm');

var browser = Services.wm.getMostRecentWindow('navigator:browser');
var connection = browser.navigator.mozMobileConnections[0];

// provide a fake APN and enable data connection.
// enable 3G radio
function enableRadio() {
  if (connection.radioState !== 'enabled') {
    connection.setRadioEnabled(true);
  }
}

// disable 3G radio
function disableRadio() {
  if (connection.radioState === 'enabled') {
    connection.setRadioEnabled(false);
  }
}

addMessageListener('prepare-network', function(message) {
  connection.addEventListener('datachange', function onDataChange() {
    if (connection.data.connected) {
      connection.removeEventListener('datachange', onDataChange);
      Services.prefs.setIntPref('network.proxy.type', 2);
      sendAsyncMessage('network-ready', true);
    }
  });

  enableRadio();
});

addMessageListener('network-cleanup', function(message) {
  connection.addEventListener('datachange', function onDataChange() {
    if (!connection.data.connected) {
      connection.removeEventListener('datachange', onDataChange);
      Services.prefs.setIntPref('network.proxy.type', 2);
      sendAsyncMessage('network-disabled', true);
    }
  });
  disableRadio();
});