Ziele Untersuchung
mit Columbo Integrität von
Datenbanken Interaktion und
Portierbarkeit Ergonomie der
Schnittstellen

Angebot Produkte Projekt Beratung

Mittel Analytik Modellierung Sprachen Algebra Logik Hardware Denken Kreativität

Zusammenhänge Gesellschaft Wirtschaft Branche Firma

Benutzer


products/Sources/formale Sprachen/C/Firefox/layout/inspector/tests/ (Firefox Browser Version 153.0.1^©) Datei vom 27.6.2026 mit Größe 3 kB

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 CSSStyleRule::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;
    }

    ::view-transition-group(root), #bar, ::view-transition-group(*) {
       animation-duration: 3600s;
    }
  </style>
</head>
<body>
<div id="foo">foo content</div>

<script>

const InspectorUtils = SpecialPowers.InspectorUtils;

add_task(async () => {
  const element = document.querySelector("#foo");
  const elementRules = InspectorUtils.getMatchingCSSRules(element);

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

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

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

  function checkPseudo(pseudo) {
    const rule = InspectorUtils.getMatchingCSSRules(element, pseudo).at(-1);
    ok(
      !rule.selectorMatchesElement(0, element),
      "Doesn't match without " + pseudo
    );
    ok(
      !rule.selectorMatchesElement(1, element),
      "Doesn't match without " + pseudo
    );
    ok(
      rule.selectorMatchesElement(0, element, pseudo),
      "Matches on #foo" + pseudo
    );
    ok(
      !rule.selectorMatchesElement(1, element, pseudo),
      "Doesn't match on #bar" + pseudo
    );
  }

  info("Create a view transition");
  const transition = document.startViewTransition(() => {
    element.replaceChildren("updated foo content");
  });
  await transition.ready;
  await transition.updateCallbackDone;

  const viewTransitionGroupRule = InspectorUtils.getMatchingCSSRules(
    document.documentElement,
    "::view-transition-group(root)"
  ).find(rule => {
    try {
      return rule.selectorText === "::view-transition-group(root), #bar, ::view-transition-group(*)";
    } catch {}
    return false;
  });

  ok(
    !!viewTransitionGroupRule,
    "Got the expected ::view-transition-group rule"
  );
  ok(
    viewTransitionGroupRule.selectorMatchesElement(
      0,
      document.documentElement,
      "::view-transition-group(root)"
    ),
    "Matches ::view-transition-group(root)"
  );
  ok(
    !viewTransitionGroupRule.selectorMatchesElement(1, document.documentElement),
    "Doesn't match #bar"
  );
  ok(
    viewTransitionGroupRule.selectorMatchesElement(
      2,
      document.documentElement,
      "::view-transition-group(root)"
    ),
    "Matches ::view-transition-group(*)"
  );
});

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

Messung V0.5 in Prozent

¤ Dauer der Verarbeitung: 0.21 Sekunden (vorverarbeitet am 2026-08-22) ¤

Wurzel

Suchen

PVS Prover

Isabelle Prover

NIST Cobol Testsuite

Cephes Mathematical Library

Vienna Development Method

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.