Swarup Ukil
4e99e4a115
As it stood, if the originating element did not use attr(data) while its pseudo-elements did use attr(data), then if data's value changed, we would miss recascading the pseudo and leave them stale. This patch only covers some pseudo-elements: generated content pseudo elements (::marker, ::after, ::marker, ::backdrop), ::first-letter and ::first-line, and UA widget pseudos. More work is needed for the remaining pseudos: Bug 2037724 Differential Revision: https://phabricator.services.mozilla.com/D299040
62 lines
2.7 KiB
HTML
62 lines
2.7 KiB
HTML
<!-- Test is a derivative of attr-pseudo-elem-invalidation.html -->
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<!DOCTYPE html>
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<title>CSS Values and Units Test: attr() invalidation of pseudo elements</title>
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<meta name="assert" content="Verify invalidation for attr() dependencies strictly on pseudo elements.">
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<link rel="help" href="https://drafts.csswg.org/css-values/#attr-notation">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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/* Eager + content generated pseudos */
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#div::after { content: "y"; font-size: attr(data-foo type(<percentage>)); }
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#div::before { content: "x"; font-size: attr(data-foo type(<percentage>)); }
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#div::first-letter { font-size: attr(data-foo type(<percentage>)); }
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#div::first-line { font-size: attr(data-foo type(<percentage>)); }
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#dialog::backdrop { font-size: attr(data-foo type(<percentage>)); }
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#li::marker { font-size: attr(data-foo type(<percentage>)); }
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#text-input::placeholder { font-size: attr(data-foo type(<percentage>)); }
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#file::file-selector-button { font-size: attr(data-foo type(<percentage>)); }
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#details::details-content { font-size: attr(data-foo type(<percentage>)); }
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</style>
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<div id="div">Some text</div>
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<dialog id="dialog">Some text in modal</dialog>
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<ol><li id="li">Item</li></ol>
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<input id="text-input" placeholder="Enter text">
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<input id="file" type="file">
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<details id="details" open><p>Some content</p></details>
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<script>
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const tests = [
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{ id: "div", pseudo: "::after" },
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{ id: "div", pseudo: "::before" },
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{ id: "div", pseudo: "::first-letter" },
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{ id: "div", pseudo: "::first-line" },
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{ id: "li", pseudo: "::marker" },
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{ id: "text-input", pseudo: "::placeholder" },
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{ id: "file", pseudo: "::file-selector-button" },
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{ id: "details", pseudo: "::details-content" },
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];
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function test_pseudo_element_invalidation({ id, pseudo }) {
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const elem = document.getElementById(id);
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elem.setAttribute("data-foo", "150%");
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const old_font_size = window.getComputedStyle(elem, pseudo).getPropertyValue("font-size");
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elem.setAttribute("data-foo", "300%");
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const new_font_size = window.getComputedStyle(elem, pseudo).getPropertyValue("font-size");
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test(() => {
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assert_not_equals(new_font_size, old_font_size,
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"Change of attribute value should lead to invalidation of "
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+ pseudo + " element style.");
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});
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}
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function test_backdrop_invalidation() {
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const dlg = document.getElementById("dialog");
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dlg.showModal();
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test_pseudo_element_invalidation({id: "dialog", pseudo: "::backdrop"});
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dlg.close();
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}
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tests.forEach(test_pseudo_element_invalidation);
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test_backdrop_invalidation();
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</script>
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