The Tor Browser: dom/browser-element/mochitest/browserElement

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* Any copyright is dedicated to the public domain.

     2    http://creativecommons.org/publicdomain/zero/1.0/ */

     4 // Test that the onmozbrowservisibilitychange event works.

     5 'use strict';

     7 SimpleTest.waitForExplicitFinish();

     8 browserElementTestHelpers.setEnabledPref(true);

     9 browserElementTestHelpers.addPermission();

    11 var iframe1 = null;

    12 function runTest() {

    13   iframe1 = document.createElement('iframe');

    14   SpecialPowers.wrap(iframe1).mozbrowser = true;

    15   document.body.appendChild(iframe1);

    17   iframe1.src = 'data:text/html,<html><head><title>Title</title></head><body></body></html>';

    18   checkVisibilityFalse();

    19 }

    21 function checkVisibilityFalse() {

    22   iframe1.addEventListener('mozbrowservisibilitychange', function onvisibilitychange(e) {

    23     iframe1.removeEventListener(e.type, onvisibilitychange);

    25     is(e.detail.visible, false, 'Visibility should be false');

    26     checkVisibilityTrue();

    27   });

    29   iframe1.setVisible(false);

    30 }

    32 function checkVisibilityTrue() {

    33   iframe1.addEventListener('mozbrowservisibilitychange', function onvisibilitychange(e) {

    34     iframe1.removeEventListener(e.type, onvisibilitychange);

    36     is(e.detail.visible, true, 'Visibility should be true');

    37     SimpleTest.finish();

    38   });

    40   iframe1.setVisible(true);

    41 }

    43 addEventListener('testready', runTest);

The Tor Browser / file revision