<!DOCTYPE HTML>
<html class="reftest-wait">
<head>
<title>Delayed image reftest wrapper</title>
</head>
<body>
<!-- non-empty alt to avoid the broken image icon -->
<img id="image1" alt=" ">
<script>

window.addEventListener("MozReftestInvalidate", reftestInvalidateListener);

// This loads a externally specified image, forces a draw (in case of
// decode-on-draw), waits 350ms, and then triggers the reftest snapshot.
// This allows the animation on the page to complete.
//
// Use as "delaytest.html?animation.png"
//

// Get the image URL from our URL
var imgURL = document.location.search.substr(1);

// Load the image
var img = document.images[0];
img.src = imgURL;
img.onload = forceDecode;
img.onerror = forceDecode;

let decodeComplete = false;
let gotReftestInvalidate = false;

function forceDecode() {
  img.decode().then(function() {
    decodeComplete = true;
    maybeStartTimer();
  }, function() {
    decodeComplete = true;
    maybeStartTimer();
  });
}

function reftestInvalidateListener() {
  gotReftestInvalidate = true;
  maybeStartTimer();
}

function maybeStartTimer() {
  if (decodeComplete && gotReftestInvalidate) {
    startTimer();
  }
}

function startTimer() {
  const delay = 350;
  setTimeout("document.documentElement.className = '';", delay);
}
</script>
</body>
</html>
