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49 lines
1.6 KiB
HTML
49 lines
1.6 KiB
HTML
<!doctype html>
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<link rel="href" href="https://mozilla.org" title="Mozilla">
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<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
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<link rel="help" href="https://drafts.csswg.org/css-scoping/#slotted-pseudo">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<div id="host"><p>This text should be green</p></div>
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<script>
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let shadow = host.attachShadow({ mode: "open" });
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shadow.innerHTML = `
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<style>
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/* This is not expected to match */
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.container ::slotted(p) {
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color: red !important;
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}
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/* This _is_ expected to match */
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#nested ::slotted(p) {
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background-color: green;
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}
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</style>
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<div id="nested"><slot></slot></div>
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`;
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let nested = shadow.querySelector("#nested").attachShadow({ mode: "open" });
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nested.innerHTML = `
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<style>
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.container ::slotted(p) {
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color: green;
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}
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</style>
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<div class="container">
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<slot></slot>
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</div>
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`;
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let p = document.querySelector("p");
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test(function() {
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assert_equals(getComputedStyle(p).color, "rgb(0, 128, 0)");
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assert_equals(getComputedStyle(p).backgroundColor, "rgb(0, 128, 0)");
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}, "Slotted matches rules against the slot in the right tree");
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test(function() {
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nested.querySelector(".container").classList.remove("container");
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assert_not_equals(getComputedStyle(p).color, "rgb(0, 128, 0)");
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nested.host.removeAttribute("id");
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assert_not_equals(getComputedStyle(p).backgroundColor, "rgb(0, 128, 0)");
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}, "Style invalidation works correctly for nested slots");
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</script>
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