58 lines
2.3 KiB
HTML
58 lines
2.3 KiB
HTML
<!doctype html>
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<title>adoptedStyleSheets should stay when adopting to/from template document</title>
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<link rel="author" title="Rakina Zata Amni" href="mailto:rakina@chromium.org">
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<link rel="help" href="https://wicg.github.io/construct-stylesheets/">
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<script src = '/resources/testharness.js'></script>
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<script src = '/resources/testharnessreport.js'></script>
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<body>
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<div id="host"></div>
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<template id='template'>
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<template id='nested_template'></template>
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</template>
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</body>
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<script>
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test(function() {
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let sheet = new CSSStyleSheet();
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sheet.replaceSync("div { color: blue }");
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let host = document.getElementById("host");
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let root = host.attachShadow({ mode: "open" });
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root.innerHTML = `<div></div>`;
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root.adoptedStyleSheets = [sheet];
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function assertAdoptedStyleSheet() {
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assert_equals(host.ownerDocument, root.firstChild.ownerDocument, "Shadow root was not adopted?");
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assert_equals(root.adoptedStyleSheets.length, 1);
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assert_equals(root.adoptedStyleSheets[0], sheet);
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if (root.ownerDocument == document) {
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assert_equals(getComputedStyle(root.firstChild).color, "rgb(0, 0, 255)", "Sheet should apply");
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}
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}
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assertAdoptedStyleSheet();
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// adoptedStyleSheets is not cleared when adopted into a <template>.
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const template = document.getElementById("template");
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template.content.appendChild(host);
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assert_not_equals(host.ownerDocument, document, "Should've been adopted");
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assertAdoptedStyleSheet();
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// adoptedStyleSheets is not cleared when adopted back in the main document.
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document.body.appendChild(host);
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assert_equals(host.ownerDocument, document, "Should've been re-adopted");
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assertAdoptedStyleSheet();
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// adoptedStyleSheets is not cleared when adopted into a nested <template>.
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const nested_template = template.content.firstElementChild;
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nested_template.content.appendChild(host);
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assert_not_equals(host.ownerDocument, document, "Should've been adopted");
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assertAdoptedStyleSheet();
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// adoptedStyleSheets is cleared when adopted into an <iframe>.
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const iframe = document.createElement("iframe");
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document.body.appendChild(iframe);
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iframe.contentDocument.body.appendChild(host);
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assert_equals(root.adoptedStyleSheets.length, 0);
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}, "adoptedStyleSheets won'te be cleared when adopting into/from <template>s");
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</script>
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