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LibWeb/CSS: Implement the :state(foo) pseudo-class
This matches custom elements that have `foo` in their custom states set. The 2 test failures here are because we don't support `::part()` yet.
This commit is contained in:
Sam Atkins
committed by
Tim Ledbetter
Tim Ledbetter
parent
5387c923ca
commit
202c55bf28
Notes:
github-actions[bot]
2025-07-04 17:11:37 +00:00
Author: https://github.com/AtkinsSJ Commit: https://github.com/LadybirdBrowser/ladybird/commit/202c55bf286 Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5302 Reviewed-by: https://github.com/tcl3 ✅
@@ -0,0 +1,92 @@
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="author" title="Keith Cirkel" href="mailto:wpt@keithcirkel.co.uk" />
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<link rel="help" href="https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class" />
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<title>:state() css selector applies to nth-of selectors</title>
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<script src="../../resources/testharness.js"></script>
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<script src="../../resources/testharnessreport.js"></script>
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</head>
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<body>
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<custom-state id="myCE">First Element</custom-state>
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<p id="mySibling">First Sibling</p>
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<custom-state id="myCE2">Second Element</custom-state>
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<p id="mySibling2">Second Sibling</p>
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<style>
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:nth-child(1), :nth-child(2) {
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color: #f00;
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}
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:nth-child(2 of :state(--green)) {
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color: #0f0;
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}
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:nth-child(2 of :state(--green)) + p {
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color: #00f;
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}
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</style>
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<script>
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customElements.define('custom-state', class extends HTMLElement {
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connectedCallback() {
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this.elementInternals = this.attachInternals();
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}
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});
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test(function(t) {
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t.add_cleanup(() => { myCE.elementInternals.states.delete('--green') });
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t.add_cleanup(() => { myCE2.elementInternals.states.delete('--green') });
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assert_false(myCE.elementInternals.states.has('--green'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(myCE2).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(mySibling).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(mySibling2).getPropertyValue('color'), 'rgb(255, 0, 0)');
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myCE.elementInternals.states.add('--green');
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assert_true(myCE.elementInternals.states.has('--green'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(myCE2).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(mySibling).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(mySibling2).getPropertyValue('color'), 'rgb(255, 0, 0)');
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myCE2.elementInternals.states.add('--green');
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assert_true(myCE2.elementInternals.states.has('--green'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(myCE2).getPropertyValue('color'), 'rgb(0, 255, 0)');
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assert_equals(getComputedStyle(mySibling).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(mySibling2).getPropertyValue('color'), 'rgb(0, 0, 255)');
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}, "state selector has influence on nth-of when state is applied");
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test(function(t) {
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t.add_cleanup(() => { myCE.elementInternals.states.delete('--foo') });
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t.add_cleanup(() => { myCE2.elementInternals.states.delete('--foo') });
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myCE.elementInternals.states.add('--foo');
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myCE2.elementInternals.states.add('--foo');
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assert_false(myCE.elementInternals.states.has('--green'));
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assert_true(myCE.elementInternals.states.has('--foo'));
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assert_false(myCE2.elementInternals.states.has('--green'));
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assert_true(myCE2.elementInternals.states.has('--foo'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(myCE2).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(mySibling).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(mySibling2).getPropertyValue('color'), 'rgb(255, 0, 0)');
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}, "state selector only applies on given ident");
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test(function(t) {
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myCE.elementInternals.states.add('--green');
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myCE.elementInternals.states.add('--foo');
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myCE2.elementInternals.states.add('--green');
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myCE2.elementInternals.states.add('--foo');
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assert_true(myCE.elementInternals.states.has('--green'));
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assert_true(myCE.elementInternals.states.has('--foo'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(myCE2).getPropertyValue('color'), 'rgb(0, 255, 0)');
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assert_equals(getComputedStyle(mySibling).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(mySibling2).getPropertyValue('color'), 'rgb(0, 0, 255)');
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myCE.elementInternals.states.clear();
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(myCE2).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(mySibling).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_equals(getComputedStyle(mySibling2).getPropertyValue('color'), 'rgb(255, 0, 0)');
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}, "style is invalided on clear()");
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</script>
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</body>
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</html>
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@@ -0,0 +1,74 @@
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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8" />
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<meta name="timeout" content="long" />
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<meta
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name="author"
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title="Keith Cirkel"
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href="mailto:wpt@keithcirkel.co.uk"
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/>
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<link rel="help" href="https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class" />
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<title>:state() css selector applies in shadow roots</title>
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<script src="../../resources/testharness.js"></script>
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<script src="../../resources/testharnessreport.js"></script>
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</head>
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<body>
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<custom-state id="myCE"> I should be green </custom-state>
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<style></style>
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<script>
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customElements.define(
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"custom-state",
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class extends HTMLElement {
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connectedCallback() {
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this.elementInternals = this.attachInternals();
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const css = new CSSStyleSheet();
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css.replaceSync(`
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:host {
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color: #f00;
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}
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:host(:state(green)) {
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color: #0f0;
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}
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`);
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this.attachShadow({ mode: "open" }).adoptedStyleSheets.push(css);
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}
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},
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);
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test(function () {
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assert_false(myCE.elementInternals.states.has("green"));
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assert_equals(
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getComputedStyle(myCE).getPropertyValue("color"),
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"rgb(255, 0, 0)",
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);
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}, "state selector has no influence when state is not applied");
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test(function (t) {
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myCE.elementInternals.states.add("green");
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t.add_cleanup(() => {
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myCE.elementInternals.states.delete("green");
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});
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assert_true(myCE.elementInternals.states.has("green"));
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assert_equals(
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getComputedStyle(myCE).getPropertyValue("color"),
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"rgb(0, 255, 0)",
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);
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}, "state selector has influence when state is applied");
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test(function (t) {
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myCE.elementInternals.states.add("foo");
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t.add_cleanup(() => {
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myCE.elementInternals.states.delete("foo");
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});
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assert_false(myCE.elementInternals.states.has("green"));
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assert_true(myCE.elementInternals.states.has("foo"));
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assert_equals(
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getComputedStyle(myCE).getPropertyValue("color"),
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"rgb(255, 0, 0)",
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);
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}, "state selector only applies on given ident");
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</script>
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</body>
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</html>
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@@ -0,0 +1,130 @@
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="timeout" content="long">
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<meta name="author" title="Keith Cirkel" href="mailto:wpt@keithcirkel.co.uk" />
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<link rel="help" href="https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class" />
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<title>:state() css selector applies</title>
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<script src="../../resources/testharness.js"></script>
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<script src="../../resources/testharnessreport.js"></script>
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</head>
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<body>
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<custom-state id="myCE">I should be green</custom-state>
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<p id="mySibling">I should be blue</p>
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<p id="myHas">I should be blue</p>
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<style>
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custom-state {
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color: #f00;
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}
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custom-state + p {
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color: #f00;
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}
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custom-state:state(--green) {
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color: #0f0;
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}
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custom-state:--green {
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color: #0f0;
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}
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body:has(custom-state:state(--green)) p {
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color: #0ff;
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}
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custom-state:state(--green) + p[id] {
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color: #00f;
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}
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custom-state:--green + p {
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color: #00f;
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}
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</style>
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<script>
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customElements.define('custom-state', class extends HTMLElement {
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connectedCallback() {
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this.elementInternals = this.attachInternals();
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}
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});
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test(function() {
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assert_false(myCE.elementInternals.states.has('--green'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(255, 0, 0)');
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}, "state selector has no influence when state is not applied");
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test(function() {
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assert_false(myCE.elementInternals.states.has('--green'));
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assert_equals(getComputedStyle(mySibling).getPropertyValue('color'), 'rgb(255, 0, 0)');
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}, "state selector has no influence on sibling selectors when not applied");
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test(function(t) {
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myCE.elementInternals.states.add('--green');
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t.add_cleanup(() => { myCE.elementInternals.states.delete('--green') });
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assert_true(myCE.elementInternals.states.has('--green'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(0, 255, 0)');
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}, "state selector has influence when state is applied");
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test(function(t) {
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myCE.elementInternals.states.add('--green');
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t.add_cleanup(() => { myCE.elementInternals.states.delete('--green') });
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assert_true(myCE.elementInternals.states.has('--green'));
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assert_equals(getComputedStyle(mySibling).getPropertyValue('color'), 'rgb(0, 0, 255)');
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}, "state selector influences siblings when state is applied");
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test(function(t) {
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myCE.elementInternals.states.add('--green');
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t.add_cleanup(() => { myCE.elementInternals.states.delete('--green') });
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assert_true(myCE.elementInternals.states.has('--green'));
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assert_equals(getComputedStyle(myHas).getPropertyValue('color'), 'rgb(0, 255, 255)');
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}, "state selector influences has() when state is applied");
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test(function(t) {
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myCE.elementInternals.states.add('--foo');
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t.add_cleanup(() => { myCE.elementInternals.states.delete('--foo') });
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assert_false(myCE.elementInternals.states.has('--green'));
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assert_true(myCE.elementInternals.states.has('--foo'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(255, 0, 0)');
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}, "state selector only applies on given ident");
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test(function(t) {
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myCE.elementInternals.states.add('--foo');
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t.add_cleanup(() => { myCE.elementInternals.states.delete('--foo') });
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assert_false(myCE.elementInternals.states.has('--green'));
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assert_true(myCE.elementInternals.states.has('--foo'));
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assert_equals(getComputedStyle(mySibling).getPropertyValue('color'), 'rgb(255, 0, 0)');
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}, "state selector only applies to siblings on given ident");
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test(function(t) {
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myCE.elementInternals.states.add('--foo');
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t.add_cleanup(() => { myCE.elementInternals.states.delete('--foo') });
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assert_false(myCE.elementInternals.states.has('--green'));
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assert_true(myCE.elementInternals.states.has('--foo'));
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assert_equals(getComputedStyle(mySibling).getPropertyValue('color'), 'rgb(255, 0, 0)');
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}, "state selector only applies to has() on given ident");
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test(function(t) {
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myCE.elementInternals.states.add('--green');
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myCE.elementInternals.states.add('--green');
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myCE.elementInternals.states.add('--green');
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t.add_cleanup(() => { myCE.elementInternals.states.delete('--green') });
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assert_true(myCE.elementInternals.states.has('--green'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(0, 255, 0)');
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assert_true(myCE.elementInternals.states.delete('--green'));
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assert_false(myCE.elementInternals.states.has('--green'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(255, 0, 0)');
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assert_false(myCE.elementInternals.states.delete('--green'));
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}, "states added multiple times counts as one");
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test(function(t) {
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myCE.elementInternals.states.add('--green');
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myCE.elementInternals.states.add('--foo');
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t.add_cleanup(() => { myCE.elementInternals.states.clear() });
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assert_true(myCE.elementInternals.states.has('--green'));
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assert_true(myCE.elementInternals.states.has('--foo'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(0, 255, 0)');
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myCE.elementInternals.states.clear();
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assert_false(myCE.elementInternals.states.has('--green'));
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assert_false(myCE.elementInternals.states.has('--foo'));
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assert_equals(getComputedStyle(myCE).getPropertyValue('color'), 'rgb(255, 0, 0)');
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}, "style is invalided on clear()");
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</script>
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</body>
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</html>
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@@ -0,0 +1,146 @@
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<!DOCTYPE html>
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<link rel=help href="https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class">
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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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#state-and-part::part(inner) {
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opacity: 0;
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}
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#state-and-part::part(inner):state(innerFoo) {
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opacity: 0.5;
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}
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#state-and-part:state(outerFoo)::part(inner) {
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opacity: 0.25;
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}
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:state( \(escaped\ state ) {}
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</style>
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<body>
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<script>
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class TestElement extends HTMLElement {
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constructor() {
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super();
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this._internals = this.attachInternals();
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}
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get i() {
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return this._internals;
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}
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}
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customElements.define('test-element', TestElement);
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class ContainerElement extends HTMLElement {
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constructor() {
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super();
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this._internals = this.attachInternals();
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this._shadow = this.attachShadow({mode:'open'});
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this._shadow.innerHTML = `
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<style>
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:host {
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border-style: solid;
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}
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:host(:state(dotted)) {
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border-style: dotted;
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}
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</style>
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<test-element part="inner"></test-element>`;
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}
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get i() {
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return this._internals;
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}
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get innerElement() {
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return this._shadow.querySelector('test-element');
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}
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}
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customElements.define('container-element', ContainerElement);
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test(() => {
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document.querySelector(':state(foo)');
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document.querySelector(':state(--foo)');
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document.querySelector(':state(--)');
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document.querySelector(':state(--16px)');
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}, ':state() parsing passes');
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test(() => {
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assert_throws_dom('SyntaxError', () => { document.querySelector(':state'); });
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assert_throws_dom('SyntaxError', () => { document.querySelector(':state('); });
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assert_throws_dom('SyntaxError', () => { document.querySelector(':state()'); });
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assert_throws_dom('SyntaxError', () => { document.querySelector(':state(=)'); });
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assert_throws_dom('SyntaxError', () => { document.querySelector(':state(name=value)'); });
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assert_throws_dom('SyntaxError', () => { document.querySelector(':state( foo bar)'); });
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assert_throws_dom('SyntaxError', () => { document.querySelector(':state(16px)'); });
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}, ':state() parsing failures');
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test(() => {
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assert_throws_dom('SyntaxError', () => { document.querySelector(':--('); });
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assert_throws_dom('SyntaxError', () => { document.querySelector(':--()'); });
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assert_throws_dom('SyntaxError', () => { document.querySelector(':--)'); });
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assert_throws_dom('SyntaxError', () => { document.querySelector(':--='); });
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assert_throws_dom('SyntaxError', () => { document.querySelector(':--name=value'); });
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}, 'deprecated :--state parsing failures');
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test(() => {
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assert_equals(document.styleSheets[0].cssRules[1].cssText,
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'#state-and-part::part(inner):state(innerFoo) { opacity: 0.5; }');
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assert_equals(document.styleSheets[0].cssRules[3].selectorText,
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':state(\\(escaped\\ state)');
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}, ':state(foo) serialization');
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test(() => {
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let element = new TestElement();
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let states = element.i.states;
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|
||||
assert_false(element.matches(':state(foo)'));
|
||||
assert_true(element.matches(':not(:state(foo))'));
|
||||
states.add('foo');
|
||||
assert_true(element.matches(':state(foo)'));
|
||||
assert_true(element.matches(':is(:state(foo))'));
|
||||
element.classList.add('c1', 'c2');
|
||||
assert_true(element.matches('.c1:state(foo)'));
|
||||
assert_true(element.matches(':state(foo).c1'));
|
||||
assert_true(element.matches('.c2:state(foo).c1'));
|
||||
}, ':state(foo) in simple cases');
|
||||
|
||||
test(() => {
|
||||
let element = new TestElement();
|
||||
element.tabIndex = 0;
|
||||
document.body.appendChild(element);
|
||||
element.focus();
|
||||
let states = element.i.states;
|
||||
|
||||
states.add('foo');
|
||||
assert_true(element.matches(':focus:state(foo)'));
|
||||
assert_true(element.matches(':state(foo):focus'));
|
||||
}, ':state(foo) and other pseudo classes');
|
||||
|
||||
test(() => {
|
||||
let outer = new ContainerElement();
|
||||
outer.id = 'state-and-part';
|
||||
document.body.appendChild(outer);
|
||||
let inner = outer.innerElement;
|
||||
let innerStates = inner.i.states;
|
||||
|
||||
innerStates.add('innerFoo');
|
||||
assert_equals(getComputedStyle(inner).opacity, '0.5',
|
||||
'::part() followed by :state()');
|
||||
innerStates.delete('innerFoo');
|
||||
innerStates.add('innerfoo');
|
||||
assert_equals(getComputedStyle(inner).opacity, '0',
|
||||
':state() matching should be case-sensitive');
|
||||
innerStates.delete('innerfoo');
|
||||
|
||||
outer.i.states.add('outerFoo');
|
||||
assert_equals(getComputedStyle(inner).opacity, '0.25',
|
||||
':state(foo) followed by ::part()');
|
||||
}, ':state(foo) and ::part()');
|
||||
|
||||
test(() => {
|
||||
let outer = new ContainerElement();
|
||||
document.body.appendChild(outer);
|
||||
|
||||
assert_equals(getComputedStyle(outer).borderStyle, 'solid');
|
||||
outer.i.states.add('dotted');
|
||||
assert_equals(getComputedStyle(outer).borderStyle, 'dotted');
|
||||
}, ':state(foo) and :host()');
|
||||
</script>
|
||||
</body>
|
||||
Reference in New Issue
Block a user