<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=500885
-->
<head>
  <title>Test for Bug 500885</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <script src="/tests/SimpleTest/paint_listener.js"></script>
  <script type="text/javascript" src="/tests/gfx/layers/apz/test/mochitest/apz_test_utils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=500885">Mozilla Bug 500885</a>
<div>
  <input id="file" type="file" />
</div>
<script type="text/javascript">

var MockFilePicker = SpecialPowers.MockFilePicker;
MockFilePicker.init(window);
MockFilePicker.returnValue = MockFilePicker.returnOK;

async function test() {
  // SpecialPowers.DOMWindowUtils doesn't appear to fire mouseEvents correctly
  var wu = SpecialPowers.getDOMWindowUtils(window);

  try {
    var domActivateEvents;
    var fileInput = document.getElementById("file");
    var rect = fileInput.getBoundingClientRect();

    fileInput.addEventListener ("DOMActivate", function (e) {
      ok("detail" in e, "DOMActivate should have .detail");
      is(e.detail, 1, ".detail should be 1");
      domActivateEvents++;
    });

    fileInput.scrollIntoView({ behaviour: "smooth" });
    await promiseApzFlushedRepaints();

    domActivateEvents = 0;
    wu.sendMouseEvent("mousedown", rect.left + 5, rect.top + 5, 0, 1, 0);
    wu.sendMouseEvent("mouseup", rect.left + 5, rect.top + 5, 0, 1, 0);
    is(domActivateEvents, 1, "click on button should fire 1 DOMActivate event");

    domActivateEvents = 0;
    wu.sendMouseEvent("mousedown", rect.right - 5, rect.top + 5, 0, 1, 0);
    wu.sendMouseEvent("mouseup", rect.right - 5, rect.top + 5, 0, 1, 0);
    is(domActivateEvents, 1, "click on text field should fire 1 DOMActivate event");
  } finally {
    SimpleTest.executeSoon(function() {
      MockFilePicker.cleanup();
      SimpleTest.finish();
    });
  }
}

SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(test);

</script>
</body>

</html>
