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<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=557087
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<head>
  <title>Test for Bug 557087</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=557087">Mozilla Bug 557087</a>
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<pre id="test">
<script>

/** Test for Bug 557087 **/

function checkDisabledAttribute(aFieldset)
{
  ok('disabled' in aFieldset,
     "fieldset elements should have the disabled attribute");

  ok(!aFieldset.disabled,
     "fieldset elements disabled attribute should be disabled");
  is(aFieldset.getAttribute('disabled'), null,
    "fieldset elements disabled attribute should be disabled");

  aFieldset.disabled = true;
  ok(aFieldset.disabled,
     "fieldset elements disabled attribute should be enabled");
  isnot(aFieldset.getAttribute('disabled'), null,
    "fieldset elements disabled attribute should be enabled");

  aFieldset.removeAttribute('disabled');
  aFieldset.setAttribute('disabled', '');
  ok(aFieldset.disabled,
     "fieldset elements disabled attribute should be enabled");
  isnot(aFieldset.getAttribute('disabled'), null,
    "fieldset elements disabled attribute should be enabled");

  aFieldset.removeAttribute('disabled');
  ok(!aFieldset.disabled,
     "fieldset elements disabled attribute should be disabled");
  is(aFieldset.getAttribute('disabled'), null,
    "fieldset elements disabled attribute should be disabled");
}

function checkDisabledPseudoClass(aFieldset)
{
  is(document.querySelector(":disabled"), null,
     "no elements should have :disabled applied to them");

  aFieldset.disabled = true;
  is(document.querySelector(":disabled"), aFieldset,
     ":disabled should apply to fieldset elements");

  aFieldset.disabled = false;
  is(document.querySelector(":disabled"), null,
     "no elements should have :disabled applied to them");
}

function checkEnabledPseudoClass(aFieldset)
{
  is(document.querySelector(":enabled"), aFieldset,
     ":enabled should apply to fieldset elements");

  aFieldset.disabled = true;
  is(document.querySelector(":enabled"), null,
     "no elements should have :enabled applied to them");

  aFieldset.disabled = false;
  is(document.querySelector(":enabled"), aFieldset,
     ":enabled should apply to fieldset elements");
}

function checkFocus(aFieldset)
{
  aFieldset.disabled = true;
  aFieldset.setAttribute('tabindex', 1);

  aFieldset.focus();

  isnot(document.activeElement, aFieldset,
        "fieldset can't be focused when disabled");
  aFieldset.removeAttribute('tabindex');
  aFieldset.disabled = false;
}

function checkClickEvent(aFieldset)
{
  var clickHandled = false;

  aFieldset.disabled = true;

  aFieldset.addEventListener("click", function(aEvent) {
    clickHandled = true;
  }, {once: true});

  sendMouseEvent({type:'click'}, aFieldset);
  SimpleTest.executeSoon(function() {
    ok(clickHandled, "When disabled, fieldset should not prevent click events");
    SimpleTest.finish();
  });
}

SimpleTest.waitForExplicitFinish();

SpecialPowers.pushPrefEnv({
  set: [["dom.forms.fieldset_disable_only_descendants.enabled", true]]
}).then(() => {
  var fieldset = document.createElement("fieldset");
  var content  = document.getElementById('content');
  content.appendChild(fieldset);

  checkDisabledAttribute(fieldset);
  checkDisabledPseudoClass(fieldset);
  checkEnabledPseudoClass(fieldset);
  checkFocus(fieldset);
  checkClickEvent(fieldset);
});

</script>
</pre>
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