css/css-cascade/scope-visited-cssom.html

<!DOCTYPE html>
<title>@scope - :visited and CSSOM</title>
<link rel="help" href="https://drafts.csswg.org/css-cascade-6/#scoped-styles">
<link rel="help" href="https://drafts.csswg.org/selectors-4/#link">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<main id=main></main>

<style>
  :where(:visited, :link), :where(div) {
    background-color: white;
  }
</style>

<!--
  Both #visited and #unvisited should appear to be in an unvisited state
  through getComputedStyle.
-->

<!-- :visited/:link in scoped selector -->

<template id=test_link>
  <style>
    @scope (main) {
      :link { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_link.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(0, 128, 0)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(0, 128, 0)');
}, ':link as scoped selector');
</script>

<template id=test_visited>
  <style>
    @scope (main) {
      :visited { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_visited.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(255, 255, 255)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(255, 255, 255)');
}, ':visited as scoped selector');
</script>

<template id=test_not_link>
  <style>
    @scope (main) {
      :not(:link) { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_not_link.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(255, 255, 255)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(255, 255, 255)');
}, ':not(:link) as scoped selector');
</script>

<template id=test_not_visited>
  <style>
    @scope (main) {
      :not(:visited) { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_not_visited.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(0, 128, 0)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(0, 128, 0)');
}, ':not(:visited) as scoped selector');
</script>

<!-- :visited/:link in root -->

<template id=test_link_root>
  <style>
    @scope (main :link) {
      div { background-color: green; }
    }
  </style>
  <a id=visited href=""><div></div></a>
  <a id=unvisited href="x"><div></div></a>
</template>
<script>
test((t) => {
  main.append(test_link_root.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited.firstElementChild).backgroundColor, 'rgb(0, 128, 0)');
  assert_equals(getComputedStyle(unvisited.firstElementChild).backgroundColor, 'rgb(0, 128, 0)');
}, ':link as scoping root');
</script>

<template id=test_visited_root>
  <style>
    @scope (main :visited) {
      div { background-color: green; }
    }
  </style>
  <a id=visited href=""><div></div></a>
  <a id=unvisited href="x"><div></div></a>
</template>
<script>
test((t) => {
  main.append(test_visited_root.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited.firstElementChild).backgroundColor, 'rgb(255, 255, 255)');
  assert_equals(getComputedStyle(unvisited.firstElementChild).backgroundColor, 'rgb(255, 255, 255)');
}, ':visited as scoping root');
</script>

<template id=test_not_visited_root>
  <style>
    @scope (main :not(:visited)) {
      div { background-color: green; }
    }
  </style>
  <a id=visited href=""><div></div></a>
  <a id=unvisited href="x"><div></div></a>
</template>
<script>
test((t) => {
  main.append(test_not_visited_root.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited.firstElementChild).backgroundColor, 'rgb(0, 128, 0)');
  assert_equals(getComputedStyle(unvisited.firstElementChild).backgroundColor, 'rgb(0, 128, 0)');
}, ':not(:visited) as scoping root');
</script>

<template id=test_not_link_root>
  <style>
    @scope (main :not(:link)) {
      div { background-color: green; }
    }
  </style>
  <a id=visited href=""><div></div></a>
  <a id=unvisited href="x"><div></div></a>
</template>
<script>
test((t) => {
  main.append(test_not_link_root.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited.firstElementChild).backgroundColor, 'rgb(255, 255, 255)');
  assert_equals(getComputedStyle(unvisited.firstElementChild).backgroundColor, 'rgb(255, 255, 255)');
}, ':not(:link) as scoping root');
</script>

<!-- :visited/:link in scoping root, with inner :scope -->

<template id=test_link_root_scope>
  <style>
    @scope (main :link) {
      :scope { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_link_root_scope.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(0, 128, 0)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(0, 128, 0)');
}, ':link as scoping root, :scope');
</script>

<template id=test_visited_root_scope>
  <style>
    @scope (main :visited) {
      :scope { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_visited_root_scope.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(255, 255, 255)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(255, 255, 255)');
}, ':visited as scoping root, :scope');
</script>

<template id=test_not_visited_root_scope>
  <style>
    @scope (main :not(:visited)) {
      :scope { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_not_visited_root_scope.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(0, 128, 0)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(0, 128, 0)');
}, ':not(:visited) as scoping root, :scope');
</script>

<template id=test_not_link_root_scope>
  <style>
    @scope (main :not(:link)) {
      :scope { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_not_link_root_scope.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(255, 255, 255)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(255, 255, 255)');
}, ':not(:link) as scoping root, :scope');
</script>

<!-- :visited/:link in scoping limit -->

<template id=test_link_scoping_limit>
  <style>
    @scope (main) to (:link) {
      * { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_link_scoping_limit.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(255, 255, 255)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(255, 255, 255)');
}, ':link as scoping limit');
</script>

<template id=test_visited_scoping_limit>
  <style>
    @scope (main) to (:visited) {
      * { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_visited_scoping_limit.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(0, 128, 0)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(0, 128, 0)');
}, ':visited as scoping limit');
</script>

<template id=test_not_link_scoping_limit>
  <style>
    @scope (main) to (:not(:link)) {
      * { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_not_link_scoping_limit.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(0, 128, 0)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(0, 128, 0)');
}, ':not(:link) as scoping limit');
</script>

<template id=test_not_visited_scoping_limit>
  <style>
    @scope (main) to (:not(:visited)) {
      * { background-color: green; }
    }
  </style>
  <a id=visited href=""></a>
  <a id=unvisited href="x"></a>
</template>
<script>
test((t) => {
  main.append(test_not_visited_scoping_limit.content.cloneNode(true));
  t.add_cleanup(() => main.replaceChildren());
  assert_equals(getComputedStyle(visited).backgroundColor, 'rgb(255, 255, 255)');
  assert_equals(getComputedStyle(unvisited).backgroundColor, 'rgb(255, 255, 255)');
}, ':not(:visited) as scoping limit');
</script>