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<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=2100"/>
  <title>Check that double tapping shadow dom works</title>
  <script src="apz_test_native_event_utils.js"></script>
  <script src="apz_test_utils.js"></script>
  <script src="/tests/SimpleTest/paint_listener.js"></script>
  <script>

async function attach() {
  let attachpoint = document.getElementById('attachpoint');
  attachpoint.attachShadow({mode: 'open'}).innerHTML = "<span>some text</span>";

  // flush layout
  attachpoint.getBoundingClientRect();
  await promiseApzFlushedRepaints();
}

async function test() {
  let useTouchpad = (location.search == "?touchpad");

  await attach();

  var resolution = await getResolution();
  ok(resolution > 0,
     "The initial_resolution is " + resolution + ", which is some sane value");

  // Check that double-tapping once zooms in
  // This will hit the span inside the shadow dom, inline elements are not
  // suitable zoom targets, so we will walk up, if you fail to walk out of
  // the shadow tree we won't get an element and fail to zoom. If we succeed
  // we'll hit the div with id target and zoom.
  info("sending first double tap");
  await doubleTapOn(document.getElementById("target"), 10, 10, useTouchpad);
  var prev_resolution = resolution;
  resolution = await getResolution();
  ok(resolution > prev_resolution, "The first double-tap has increased the resolution to " + resolution);

  // Check that double-tapping again on the same spot zooms out
  info("sending second double tap");
  await doubleTapOn(document.getElementById("target"), 10, 10, useTouchpad);
  prev_resolution = resolution;
  resolution = await getResolution();
  ok(resolution < prev_resolution, "The second double-tap has decreased the resolution to " + resolution);
}

waitUntilApzStable()
.then(test)
.then(subtestDone, subtestFailed);

  </script>
  <style>
    .outer {
      width: 200px;
      height: 200px;
      background: yellow;
    }
  </style>
</head>
<body>

<div id="target" class="outer">
  <div id="attachpoint"></div>
</div>

</body>
</html>