Quelle test_selectormatcheselement.html Sprache: HTML

products/sources/formale Sprachen/C/Firefox/layout/inspector/tests/test_selectormatcheselement.html

<!DOCTYPE HTML>
<html>

<head>
  <title>Test for nsIDOMUtils::selectorMatchesElement</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <style type="text/css">
    #foo,
    #bar,
    #foo::before {
      color: red;
    }

    #foo {
      div& {
        outline: 1px solid gold;
      }
    }

    #foo::before,
    #bar::before {
      content: 'foo-before';
      color: green;
    }
    #foo::after,
    #bar::after {
      content: 'foo-after';
      color: blue;
    }
    #foo::first-line,
    #bar::first-line {
      text-decoration: underline;
    }
    #foo::first-letter,
    #bar::first-letter {
      font-variant: small-caps;
    }
  </style>
</head>
<body>
<div id="foo">foo content</div>
<pre id="test">
<script type="application/javascript">

const InspectorUtils = SpecialPowers.InspectorUtils;

function do_test() {
  var element = document.querySelector("#foo");

  var elementRules = InspectorUtils.getMatchingCSSRules(element);

  var multiSelectorRule = elementRules[2];
  is(multiSelectorRule.selectorText, `#foo, #bar, #foo::before`, "Got expected multi-selector rule");
  is (multiSelectorRule.selectorMatchesElement(0, element), true,
    "Matches #foo");
  is (multiSelectorRule.selectorMatchesElement(1, element), false,
    "Doesn't match #bar");
  is (multiSelectorRule.selectorMatchesElement(0, element, ":bogus"), false,
    "Doesn't match #foo with a bogus pseudo");
  is (multiSelectorRule.selectorMatchesElement(2, element, ":bogus"), false,
    "Doesn't match #foo::before with bogus pseudo");
  is (multiSelectorRule.selectorMatchesElement(0, element, ":after"), false,
    "Does match #foo::before with the :after pseudo");

  var nestedRule = elementRules[4];
  is(nestedRule.selectorText, `div&`, "Got expected nested rule");
  is (nestedRule.selectorMatchesElement(0, element), true, "Matches div&");

  checkPseudo(":before");
  checkPseudo(":after");
  checkPseudo(":first-letter");
  checkPseudo(":first-line");

  SimpleTest.finish();

  function checkPseudo(pseudo) {
    var rules = InspectorUtils.getMatchingCSSRules(element, pseudo);
    var rule = rules[rules.length - 1];

    is (rule.selectorMatchesElement(0, element), false,
      "Doesn't match without " + pseudo);
    is (rule.selectorMatchesElement(1, element), false,
      "Doesn't match without " + pseudo);

    is (rule.selectorMatchesElement(0, element, pseudo), true,
      "Matches on #foo" + pseudo);
    is (rule.selectorMatchesElement(1, element, pseudo), false,
      "Doesn't match on #bar" + pseudo);
  }
}

SimpleTest.waitForExplicitFinish();
addLoadEvent(do_test);

</script>
</pre>
</body>
</html>

Messung V0.5

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