layout/style/test/chrome/test_display_mode.html
author James Willcox <snorp@snorp.net>
Thu, 10 Aug 2017 14:32:34 -0500
changeset 644920 4a2cfc7bd35503e18ecbd0fb337b3f3e94307a58
parent 598936 b0dd91a6a1fd347587ecaef9f81c04de937d7f31
child 646871 2bbb1bd8335d0c49ac477e60e85a03029c8c6a17
permissions -rw-r--r--
Bug 1369815 - Add mochitest for additional display modes r=heycam MozReview-Commit-ID: 3ADmC1op4Sj

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1104916
-->
<head>
  <meta charset="utf-8">
  <title>Test for Display Mode</title>
  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>
  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SpawnTask.js"></script>
  <link rel="stylesheet" type="text/css" href="chrome://global/skin"/>
  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
  <script type="application/javascript">

/** Test for Display Mode **/
SimpleTest.waitForExplicitFinish();
Components.utils.import("resource://gre/modules/Services.jsm");

function waitOneEvent(element, name) {
  return new Promise(function(resolve, reject) {
    element.addEventListener(name, function() {
      resolve();
    }, {once: true});
  });
}

add_task(async function() {
  await waitOneEvent(window, "load");

  var iframe = document.getElementById("subdoc");
  var subdoc = iframe.contentDocument;
  var style = subdoc.getElementById("style");
  var bodyComputedStyled = subdoc.defaultView.getComputedStyle(subdoc.body);
  var win = Services.wm.getMostRecentWindow("navigator:browser");

  function queryApplies(q) {
    style.setAttribute("media", q);
    return bodyComputedStyled.getPropertyValue("text-decoration") == "underline";
  }

  function shouldApply(q) {
    ok(queryApplies(q), q + " should apply");
  }

  function shouldNotApply(q) {
    ok(!queryApplies(q), q + " should not apply");
  }

  function setDisplayMode(mode) {
    win.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
                 .getInterface(Components.interfaces.nsIDocShell)
                 .displayMode = mode;
  }

  shouldApply("all and (display-mode: browser)");
  shouldNotApply("all and (display-mode: fullscreen)");
  shouldNotApply("all and (display-mode: standalone)");
  shouldNotApply("all and (display-mode: minimal-ui)");

  // Test entering the OS's fullscreen mode.
  var fullScreenEntered = waitOneEvent(win, "sizemodechange");
  synthesizeKey("VK_F11", {});
  await fullScreenEntered;
  shouldApply("all and (display-mode: fullscreen)");
  shouldNotApply("all and (display-mode: browser)");
  var fullScreenExited = waitOneEvent(win, "sizemodechange");
  synthesizeKey("VK_F11", {});
  await fullScreenExited;
  shouldNotApply("all and (display-mode: fullscreen)");
  shouldApply("all and (display-mode: browser)");

  // Test entering fullscreen through document requestFullScreen.
  fullScreenEntered = waitOneEvent(document, "mozfullscreenchange");
  document.body.mozRequestFullScreen();
  await fullScreenEntered
  ok(document.mozFullScreenElement, "window entered fullscreen");
  shouldApply("all and (display-mode: fullscreen)");
  shouldNotApply("all and (display-mode: browser)");
  fullScreenExited = waitOneEvent(document, "mozfullscreenchange");
  document.mozCancelFullScreen();
  await fullScreenExited;
  ok(!document.mozFullScreenElement, "window exited fullscreen");
  shouldNotApply("all and (display-mode: fullscreen)");
  shouldApply("all and (display-mode: browser)");

  // Test entering display mode mode through docshell
  setDisplayMode(Components.interfaces.nsIDocShell.DISPLAY_MODE_STANDALONE);
  shouldApply("all and (display-mode: standalone)");
  shouldNotApply("all and (display-mode: fullscreen)");
  shouldNotApply("all and (display-mode: browser)");
  shouldNotApply("all and (display-mode: minimal-ui)");

  // Test that changes in the display mode are reflected
  setDisplayMode(Components.interfaces.nsIDocShell.DISPLAY_MODE_MINIMAL_UI);
  shouldApply("all and (display-mode: minimal-ui)");
  shouldNotApply("all and (display-mode: standalone)");
});
  </script>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1104916">Mozilla Bug 1104916</a>
<iframe id="subdoc" src="http://mochi.test:8888/tests/layout/style/test/media_queries_iframe.html"></iframe>
<p id="display"></p>
<div id="content" style="display: none">

</div>
<pre id="test">
</pre>
</body>
</html>