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<!DOCTYPE html>
<html>
<head>
  <title>Test whether windowless plugins receive correct visible/invisible notifications.</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="plugin-utils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

  <style type="text/css">
  body {
    height: 10000px;
  }
  </style>

<body onload="startTest()">
  <p id="display"></p>

  <script type="application/javascript;version=1.8">
  SimpleTest.waitForExplicitFinish();
  setTestPluginEnabledState(SpecialPowers.Ci.nsIPluginTag.STATE_ENABLED);

  var p = null;

  function startTest() {
    p = document.getElementById('theplugin');

    // Wait for the plugin to have painted once
    var interval = setInterval(function() {
      if (!p.getPaintCount())
        return;

      clearInterval(interval);
      doScroll();
    }, 100);
  }

  const kScrollAmount = 1000;
  var startY;

  function doScroll() {
    let [x, y, w, h] = p.getWindowPosition();
    startY = y;

    scrollBy(0, kScrollAmount);
    setTimeout(checkScroll, 500);
  }

  function checkScroll() {
    let [x, y, w, h] = p.getWindowPosition();

    is(y, startY - kScrollAmount, "Window should be informed of its new position.");
    SimpleTest.finish();
  }
  </script>

  <embed id="theplugin" type="application/x-test" width="200" height="200"></embed>