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<!DOCTYPE html>
<title>CSSStyleSheet constructor and adoptedStyleSheets</title>
<link rel="author" title="Rakina Zata Amni" href="mailto:rakina@chromium.org">
<link rel="help" href="https://wicg.github.io/construct-stylesheets/">
<script src = '/resources/testharness.js'></script>
<script src = '/resources/testharnessreport.js'></script>
<section id="firstSection">
<div>
<span class="green"></span>
<span class="red"></span>
<span class="blue"></span>
<span class="white"></span>
<span class="yellow"></span>
</div>
</section>
<section id="shadowHost"></section>
<section id="thirdSection"></section>
<script>
'use strict';
const greenStyleText = ".green { color: green; }";
const redStyleTexts = [".red { color: red; }", ".red + span + span { color: red; }"];
const blueStyleTexts = [".blue { color: blue; }", ".blue + span + span { color: blue; }"];
const whiteStyleText = "* { color: white; }";
const yellowStyleText = ".yellow { color: yellow; }";
const firstDiv = document.querySelector('#firstSection > div');
const secondDiv = firstDiv.cloneNode(true);
const shadowHost = document.querySelector('#shadowHost');
const shadowRoot = shadowHost.attachShadow({mode: 'open'});
shadowRoot.appendChild(secondDiv);
const greenSpan = firstDiv.children[0];
const redSpan = firstDiv.children[1];
const blueSpan = firstDiv.children[2];
const whiteSpan = firstDiv.children[3];
const yellowSpan = firstDiv.children[4];
const greenShadowSpan = secondDiv.children[0];
const redShadowSpan = secondDiv.children[1];
const blueShadowSpan = secondDiv.children[2];
const whiteShadowSpan = secondDiv.children[3];
const yellowShadowSpan = secondDiv.children[4];
test(() => {
assert_equals(document.adoptedStyleSheets.length, 0);
}, "document.adoptedStyleSheets should initially have length 0.");
test(() => {
const sheet = new CSSStyleSheet({disabled: true, media: "screen, print"});
assert_equals(sheet.title, null, "The title attribute must return the title or null if title is the empty string");
assert_equals(sheet.ownerNode, null);
assert_equals(sheet.ownerRule, null);
assert_equals(sheet.media.length, 2);
assert_equals(sheet.media.item(0), "screen");
assert_equals(sheet.media.item(1), "print");
assert_true(sheet.disabled);
assert_equals(sheet.cssRules.length, 0);
sheet.insertRule(redStyleTexts[0]);
assert_equals(sheet.cssRules.length, 1);
assert_equals(sheet.cssRules[0].cssText, redStyleTexts[0]);
sheet.insertRule(redStyleTexts[1]);
assert_equals(sheet.cssRules.length, 2);
assert_equals(sheet.cssRules[0].cssText, redStyleTexts[1]);
const sheet2 = new CSSStyleSheet({});
assert_equals(sheet2.title, null, "The title attribute must return the title or null if title is the empty string");
assert_equals(sheet2.ownerNode, null);
assert_equals(sheet2.ownerRule, null);
assert_equals(sheet2.media.length, 0);
assert_false(sheet2.disabled);
assert_equals(sheet2.cssRules.length, 0);
sheet2.insertRule(redStyleTexts[1]);
assert_equals(sheet2.cssRules.length, 1);
assert_equals(sheet2.cssRules[0].cssText, redStyleTexts[1]);
sheet2.deleteRule(0);
assert_equals(sheet2.cssRules.length, 0);
const sheet3 = new CSSStyleSheet();
assert_equals(sheet3.title, null, "The title attribute must return the title or null if title is the empty string");
assert_equals(sheet3.ownerNode, null);
assert_equals(sheet3.ownerRule, null);
assert_equals(sheet3.media.length, 0);
assert_false(sheet3.disabled);
assert_equals(sheet3.cssRules.length, 0);
sheet3.insertRule(redStyleTexts[1]);
assert_equals(sheet3.cssRules.length, 1);
assert_equals(sheet3.cssRules[0].cssText, redStyleTexts[1]);
sheet3.deleteRule(0);
assert_equals(sheet3.cssRules.length, 0);
}, 'new CSSStyleSheet produces empty CSSStyleSheet');
test(() => {
const sheet = new CSSStyleSheet({title: "something"});
assert_equals(sheet.title, null, "title and alternate are not supported by the constructor. https://github.com/WICG/construct-stylesheets/issues/105");
}, "title can be set in the CSSStyleSheet constructor");
promise_test(() => {
const sheet = new CSSStyleSheet({disabled: true, media: "screen, print"});
const promise_sheet = sheet.replace(redStyleTexts[0]);
return promise_sheet.then(function(sheet) {
assert_equals(sheet.title, null, "The title attribute must return the title or null if title is the empty string");
assert_equals(sheet.ownerNode, null);
assert_equals(sheet.ownerRule, null);
assert_equals(sheet.media.length, 2);
assert_equals(sheet.media.item(0), "screen");
assert_equals(sheet.media.item(1), "print");
assert_true(sheet.disabled);
assert_equals(sheet.cssRules.length, 1);
assert_equals(sheet.cssRules[0].cssText, redStyleTexts[0]);
sheet.insertRule(redStyleTexts[1]);
assert_equals(sheet.cssRules.length, 2);
assert_equals(sheet.cssRules[0].cssText, redStyleTexts[1]);
});
}, 'CSSStyleSheet.replace produces Promise<CSSStyleSheet>');
function createAllSheetsPromise() {
const greenSheet = new CSSStyleSheet();
const redSheet = new CSSStyleSheet({media: "screen, print"});
const blueSheet = new CSSStyleSheet({disabled: true});
const whiteSheet = new CSSStyleSheet({disabled: true});
const yellowSheet = new CSSStyleSheet({disabled: false});
const greenPromise = greenSheet.replace(greenStyleText);
const redPromise = redSheet.replace(redStyleTexts[0] + redStyleTexts[1]);
const bluePromise = blueSheet.replace(blueStyleTexts[0] + blueStyleTexts[1]);
const whitePromise = whiteSheet.replace(whiteStyleText);
const yellowPromise = yellowSheet.replace(yellowStyleText);
return [greenPromise, redPromise, bluePromise, whitePromise, yellowPromise];
}
promise_test(() => {
return Promise.all(createAllSheetsPromise()).then(values => {
const greenStyleSheet = values[0];
const redStyleSheet = values[1];
const blueStyleSheet = values[2];
const whiteStyleSheet = values[3];
const yellowStyleSheet = values[4];
// Lists of style sheets can be created, assigned and read.
// disabled stylesheets aren't applied
document.adoptedStyleSheets = [whiteStyleSheet];
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
// disable dsheets don't block other styles from applying
document.adoptedStyleSheets = [greenStyleSheet, blueStyleSheet];
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 128, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
document.adoptedStyleSheets = [redStyleSheet, yellowStyleSheet];
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(255, 255, 0)");
document.adoptedStyleSheets = [redStyleSheet, yellowStyleSheet, greenStyleSheet, blueStyleSheet];
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 128, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(255, 255, 0)");
document.adoptedStyleSheets = [];
});
}, 'Constructed style sheets can be applied on document');
promise_test(() => {
return Promise.all(createAllSheetsPromise()).then(values => {
const greenStyleSheet = values[0];
const redStyleSheet = values[1];
const blueStyleSheet = values[2];
const whiteStyleSheet = values[3];
const yellowStyleSheet = values[4];
shadowRoot.adoptedStyleSheets = [whiteStyleSheet];
assert_equals(getComputedStyle(greenShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(blueShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowShadowSpan).color, "rgb(0, 0, 0)");
shadowRoot.adoptedStyleSheets = [greenStyleSheet, blueStyleSheet];
assert_equals(getComputedStyle(greenShadowSpan).color, "rgb(0, 128, 0)");
assert_equals(getComputedStyle(redShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(blueShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowShadowSpan).color, "rgb(0, 0, 0)");
shadowRoot.adoptedStyleSheets = [redStyleSheet, yellowStyleSheet];
assert_equals(getComputedStyle(greenShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redShadowSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteShadowSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(yellowShadowSpan).color, "rgb(255, 255, 0)");
shadowRoot.adoptedStyleSheets = [redStyleSheet, yellowStyleSheet, greenStyleSheet, blueStyleSheet];
assert_equals(getComputedStyle(greenShadowSpan).color, "rgb(0, 128, 0)");
assert_equals(getComputedStyle(redShadowSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteShadowSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(yellowShadowSpan).color, "rgb(255, 255, 0)");
});
}, 'Constructed style sheets can be applied on shadow root');
promise_test(() => {
return Promise.all(createAllSheetsPromise()).then(values => {
const greenStyleSheet = values[0];
const redStyleSheet = values[1];
shadowRoot.adoptedStyleSheets = [greenStyleSheet];
assert_equals(getComputedStyle(greenShadowSpan).color, "rgb(0, 128, 0)", "Style applies connected");
assert_equals(getComputedStyle(redShadowSpan).color, "rgb(0, 0, 0)", "Style applies when connected");
let hostParent = shadowHost.parentNode;
hostParent.removeChild(shadowHost);
assert_equals(getComputedStyle(greenShadowSpan).color, "", "Style doesn't apply when detached");
assert_equals(getComputedStyle(redShadowSpan).color, "", "Style doesn't apply when detached");
shadowRoot.adoptedStyleSheets = [redStyleSheet, greenStyleSheet];
hostParent.appendChild(shadowHost);
assert_equals(getComputedStyle(greenShadowSpan).color, "rgb(0, 128, 0)", "Style applies after reattach");
assert_equals(getComputedStyle(redShadowSpan).color, "rgb(255, 0, 0)", "Style applies after reattach");
});
}, 'Re-attaching shadow host with adopted stylesheets work');
test(() => {
const sheet = new CSSStyleSheet();
sheet.replaceSync(":host { color: red; }");
const host = document.createElement("div");
let sr = host.attachShadow({mode: "open"});
sr.adoptedStyleSheets = [sheet];
document.body.appendChild(host);
assert_equals(getComputedStyle(host).color, "rgb(255, 0, 0)", "Style applies when connected");
sheet.replaceSync(":host { color: blue; }");
assert_equals(getComputedStyle(host).color, "rgb(0, 0, 255)", "Style update applies when connected");
}, 'Attaching a shadow root that already has adopted stylesheets work');
test(() => {
const sheet = new CSSStyleSheet();
sheet.replaceSync(":host([red]) { color: red; } :host(.blue) { color: blue; }");
const host = document.createElement("div");
host.toggleAttribute("red");
document.body.appendChild(host);
assert_equals(getComputedStyle(host).color, "rgb(0, 0, 0)", "No style applies yet");
let sr = host.attachShadow({mode: "open"});
sr.adoptedStyleSheets = [sheet];
assert_equals(getComputedStyle(host).color, "rgb(255, 0, 0)", "Style applies after adding style");
document.body.removeChild(host);
document.body.appendChild(host);
assert_equals(getComputedStyle(host).color, "rgb(255, 0, 0)", "Style applies after reattachment");
host.toggleAttribute("red");
assert_equals(getComputedStyle(host).color, "rgb(0, 0, 0)", "Attribute updates to the element after reattachment apply");
host.classList.toggle("blue");
assert_equals(getComputedStyle(host).color, "rgb(0, 0, 255)", "Class updates to the element after reattachment apply");
}, "Re-attaching shadow host and updating attributes work");
promise_test(() => {
const plainSheet = new CSSStyleSheet();
const redStyleSheetPromise = plainSheet.replace(redStyleTexts[0]);
return redStyleSheetPromise.then(function(redStyleSheet) {
document.adoptedStyleSheets = [redStyleSheet];
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
redStyleSheet.insertRule(redStyleTexts[1]);
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
redStyleSheet.deleteRule(1);
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
redStyleSheet.cssRules[0].style.color = "white";
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(255, 255, 255)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
});
}, 'Changes to constructed stylesheets through CSSOM is reflected');
promise_test(() => {
const plainSheet = new CSSStyleSheet();
const redStyleSheetPromise = plainSheet.replace(redStyleTexts[0]);
return redStyleSheetPromise.then(function(redStyleSheet) {
document.adoptedStyleSheets = [redStyleSheet];
shadowRoot.adoptedStyleSheets = [redStyleSheet];
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(greenShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redShadowSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowShadowSpan).color, "rgb(0, 0, 0)");
shadowRoot.adoptedStyleSheets[0].insertRule(redStyleTexts[1]);
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(greenShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redShadowSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueShadowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteShadowSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(yellowShadowSpan).color, "rgb(0, 0, 0)");
document.adoptedStyleSheets = [];
});
}, 'Constructed stylesheet can be used and modified in multiple TreeScopes');
promise_test(() => {
const iframe = document.createElement("iframe");
document.body.appendChild(iframe);
const thirdDiv = firstDiv.cloneNode(true);
iframe.contentDocument.body.appendChild(thirdDiv);
const greenIframeSpan = thirdDiv.children[0];
const redIframeSpan = thirdDiv.children[1];
const blueIframeSpan = thirdDiv.children[2];
const whiteIframeSpan = thirdDiv.children[3];
const yellowIframeSpan = thirdDiv.children[4];
const plainSheet = new CSSStyleSheet();
const redStyleSheetPromise = plainSheet.replace(redStyleTexts[0]);
return redStyleSheetPromise.then(function(redStyleSheet) {
assert_throws_dom(
'NotAllowedError',
iframe.contentWindow.DOMException,
() => { iframe.contentDocument.adoptedStyleSheets = [redStyleSheet]; }
);
assert_equals(getComputedStyle(greenIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(blueIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowIframeSpan).color, "rgb(0, 0, 0)");
document.adoptedStyleSheets = [redStyleSheet];
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
document.adoptedStyleSheets[0].insertRule(redStyleTexts[1]);
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
});
}, 'Stylesheets constructed on the main Document cannot be used in iframes');
promise_test(async () => {
const iframe = document.createElement("iframe");
const iframeLoaded = new Promise(resolve => iframe.addEventListener("load", resolve));
document.body.appendChild(iframe);
await iframeLoaded;
const thirdDiv = firstDiv.cloneNode(true);
iframe.contentDocument.body.appendChild(thirdDiv);
const greenIframeSpan = thirdDiv.children[0];
const redIframeSpan = thirdDiv.children[1];
const blueIframeSpan = thirdDiv.children[2];
const whiteIframeSpan = thirdDiv.children[3];
const yellowIframeSpan = thirdDiv.children[4];
// Make sure both the main Document and the iframe are not styled
const emptyStyleSheet = new CSSStyleSheet();
document.adoptedStyleSheets = [emptyStyleSheet];
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(greenIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(blueIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowIframeSpan).color, "rgb(0, 0, 0)");
const iframePlainSheet = new iframe.contentWindow.CSSStyleSheet();
const iframeRedStyleSheetPromise = iframePlainSheet.replace(redStyleTexts[0]);
return iframeRedStyleSheetPromise.then(function(iframeRedStyleSheet) {
assert_throws_dom('NotAllowedError', () => { document.adoptedStyleSheets = [iframeRedStyleSheet]; });
assert_equals(getComputedStyle(greenSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(blueSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowSpan).color, "rgb(0, 0, 0)");
iframe.contentDocument.adoptedStyleSheets = [iframeRedStyleSheet];
assert_equals(getComputedStyle(greenIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redIframeSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(yellowIframeSpan).color, "rgb(0, 0, 0)");
iframe.contentDocument.adoptedStyleSheets[0].insertRule(redStyleTexts[1]);
assert_equals(getComputedStyle(greenIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(redIframeSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(blueIframeSpan).color, "rgb(0, 0, 0)");
assert_equals(getComputedStyle(whiteIframeSpan).color, "rgb(255, 0, 0)");
assert_equals(getComputedStyle(yellowIframeSpan).color, "rgb(0, 0, 0)");
});
}, 'Stylesheet constructed on iframe cannot be used in the main Document');
</script>
<div id="divNonConstructed" class="nonConstructed">
</div>
<script>
`use strict`;
const shadowRootNonConstructed = divNonConstructed.attachShadow({mode:'open'})
nonConstructedStyle = document.createElement("style");
shadowRootNonConstructed.appendChild(nonConstructedStyle);
nonConstructedStyle.sheet.insertRule(".nonConstructed { color: red; }", 0);
const nonConstructedStyleSheet = nonConstructedStyle.sheet;
test(() => {
assert_equals(getComputedStyle(divNonConstructed).color, "rgb(0, 0, 0)");
assert_throws_dom('NotAllowedError', () => { document.adoptedStyleSheets = [nonConstructedStyleSheet]; });
}, 'Adding non-constructed stylesheet to AdoptedStyleSheets is not allowed when the owner document of the stylesheet is in the same document tree as the AdoptedStyleSheets');
test(() => {
const iframe = document.createElement("iframe");
document.body.appendChild(iframe);
iframeDiv = iframe.contentDocument.createElement("div");
iframeDiv.classList.add("nonConstructed");
iframe.contentDocument.body.appendChild(iframeDiv);
assert_equals(getComputedStyle(iframeDiv).color, "rgb(0, 0, 0)");
assert_throws_dom('NotAllowedError', iframe.contentWindow.DOMException, () => {
iframe.contentDocument.adoptedStyleSheets = [nonConstructedStyleSheet];
});
assert_equals(getComputedStyle(iframeDiv).color, "rgb(0, 0, 0)");
iframeStyle = iframe.contentDocument.createElement("style");
iframe.contentDocument.body.appendChild(iframeStyle);
iframeStyle.sheet.insertRule(".nonConstructedSpan { color: red; }");
const iframeStyleSheet = iframeStyle.sheet;
nonConstructedSpan = document.createElement("span");
nonConstructedSpan.classList.add(".nonConstructedSpan");
divNonConstructed.appendChild(nonConstructedSpan);
assert_equals(getComputedStyle(iframeDiv).color, "rgb(0, 0, 0)");
assert_throws_dom('NotAllowedError', () => { document.adoptedStyleSheets = [iframeStyleSheet]; });
assert_equals(getComputedStyle(iframeDiv).color, "rgb(0, 0, 0)");
}, 'Adding non-constructed stylesheet to AdoptedStyleSheets is not allowed when the owner document of the stylesheet and the AdoptedStyleSheets are in different document trees');
function attachShadowDiv(host) {
const shadowRoot = host.attachShadow({mode: 'open'});
const shadowDiv = document.createElement("div");
shadowRoot.appendChild(shadowDiv);
return shadowDiv;
}
test(() => {
const sheet = new CSSStyleSheet();
assert_equals(sheet.cssRules.length, 0);
sheet.replaceSync(redStyleTexts[0])
assert_equals(sheet.cssRules.length, 1);
assert_equals(redStyleTexts[0], sheet.cssRules[0].cssText);
sheet.replaceSync(redStyleTexts[1]);
assert_equals(sheet.cssRules.length, 1);
assert_equals(redStyleTexts[1], sheet.cssRules[0].cssText);
}, 'CSSStyleSheet.replaceSync replaces stylesheet text synchronously');
test(() => {
// Attach a div inside a shadow root with the class ".red".
const span = document.createElement("span");
thirdSection.appendChild(span);
const shadowDiv = attachShadowDiv(span);
shadowDiv.classList.add("red");
// Create empty stylesheet.
const sheet = new CSSStyleSheet();
span.shadowRoot.adoptedStyleSheets = [sheet];
assert_equals(getComputedStyle(shadowDiv).color, "rgb(0, 0, 0)");
// Replace the stylesheet text that will color it red.
sheet.replaceSync(redStyleTexts[0]);
assert_equals(getComputedStyle(shadowDiv).color, "rgb(255, 0, 0)");
assert_equals(sheet.cssRules.length, 1);
assert_equals(sheet.cssRules[0].cssText, redStyleTexts[0]);
sheet.insertRule(redStyleTexts[1]);
assert_equals(sheet.cssRules.length, 2);
assert_equals(sheet.cssRules[0].cssText, redStyleTexts[1]);
}, 'CSSStyleSheet.replaceSync correctly updates the style of its adopters synchronously');
test(() => {
// Attach a div inside a shadow root with the class ".red".
const span = document.createElement("span");
thirdSection.appendChild(span);
const shadowDiv = attachShadowDiv(span);
shadowDiv.classList.add("target");
// Create empty stylesheet.
const sheet = new CSSStyleSheet();
span.shadowRoot.adoptedStyleSheets = [sheet];
assert_equals(getComputedStyle(shadowDiv).color, "rgb(0, 0, 0)");
// Replace the stylesheet text that will color it red.
sheet.replaceSync(".target { color: red; }");
assert_equals(getComputedStyle(shadowDiv).color, "rgb(255, 0, 0)");
// Create a style element that will set colors to white.
const style = document.createElement("style");
style.textContent = ".target { color: white; }";
span.shadowRoot.appendChild(style)
assert_equals(getComputedStyle(shadowDiv).color, "rgb(255, 0, 0)", "non-adopted styles should be ordered before adopted styles");
span.shadowRoot.adoptedStyleSheets = [];
assert_equals(getComputedStyle(shadowDiv).color, "rgb(255, 255, 255)", "with no adopted styles in conflict, the non-adopted style should take effect");
span.shadowRoot.adoptedStyleSheets = [sheet];
assert_equals(getComputedStyle(shadowDiv).color, "rgb(255, 0, 0)", "the adopted style should be ordered after the non-adopted style");
sheet.disabled = true;
assert_equals(getComputedStyle(shadowDiv).color, "rgb(255, 255, 255)", "with the adopted sheet disabled, the non-adopted style should take effect");
sheet.disabled = false;
assert_equals(getComputedStyle(shadowDiv).color, "rgb(255, 0, 0)", "the adopted sheet re-enabled, it should take effect again");
}, 'Adopted sheets are ordered after non-adopted sheets in the shadow root')
test(() => {
// Attach a div inside a shadow root with the class ".red".
const span = document.createElement("span");
thirdSection.appendChild(span);
span.classList.add("target");
// Create empty stylesheet.
const sheet = new CSSStyleSheet();
document.adoptedStyleSheets = [sheet];
assert_equals(getComputedStyle(span).color, "rgb(0, 0, 0)");
// Replace the stylesheet text that will color it red.
sheet.replaceSync(".target { color: red; }");
assert_equals(getComputedStyle(span).color, "rgb(255, 0, 0)");
// Create a style element that will set colors to white.
const style = document.createElement("style");
style.textContent = ".target { color: white; }";
span.appendChild(style)
assert_equals(getComputedStyle(span).color, "rgb(255, 0, 0)", "non-adopted styles should be ordered before adopted styles");
document.adoptedStyleSheets = [];
assert_equals(getComputedStyle(span).color, "rgb(255, 255, 255)", "with no adopted styles in conflict, the non-adopted style should take effect");
document.adoptedStyleSheets = [sheet];
assert_equals(getComputedStyle(span).color, "rgb(255, 0, 0)", "the adopted style should be ordered after the non-adopted style");
sheet.disabled = true;
assert_equals(getComputedStyle(span).color, "rgb(255, 255, 255)", "with the adopted sheet disabled, the non-adopted style should take effect");
sheet.disabled = false;
assert_equals(getComputedStyle(span).color, "rgb(255, 0, 0)", "the adopted sheet re-enabled, it should take effect again")
}, 'Adopted sheets are ordered after non-adopted sheets in the document')
const import_text = '@import url("support/constructable-import.css");';
test(() => {
assert_throws_dom("SyntaxError", () => { (new CSSStyleSheet).insertRule(import_text) });
}, 'Inserting an @import rule through insertRule on a constructed stylesheet throws an exception');
promise_test(t => {
const importUrl = "support/constructable-import.css";
const sheet = new CSSStyleSheet();
sheet.replaceSync(`@import url("${importUrl}");`);
const timeAfterReplaceSync = performance.now();
let link = document.createElement("link");
link.rel = "stylesheet";
link.href = importUrl;
return new Promise(resolve => {
link.addEventListener("error", t.unreached_func("Load shouldn't fail"));
link.addEventListener("load", t.step_func(() => {
let entries = window.performance.getEntriesByType('resource').filter(entry => entry.name.includes(importUrl));
assert_equals(entries.length, 1, "There should be only one entry for the import URL");
assert_greater_than_equal(entries[0].startTime, timeAfterReplaceSync, "The entry's start time should be after replaceSync threw");
link.remove();
resolve();
}));
document.body.appendChild(link);
});
}, "CSSStyleSheet.replaceSync should not trigger any loads from @import rules")
promise_test(() => {
const span = document.createElement("span");
thirdSection.appendChild(span);
const shadowDiv = attachShadowDiv(span);
const sheet = new CSSStyleSheet();
span.shadowRoot.adoptedStyleSheets = [sheet];
assert_equals(getComputedStyle(shadowDiv).color, "rgb(0, 0, 0)");
// Replace and assert that the imported rule is NOT applied.
const sheet_promise = sheet.replace(import_text);
return sheet_promise.then((sheet) => {
// replace() ignores @import rules:
assert_equals(sheet.cssRules.length, 0);
assert_equals(getComputedStyle(shadowDiv).color, "rgb(0, 0, 0)");
}).catch((reason) => {
assert_unreached(`Promise was rejected (${reason}) when it should have been resolved`);
});
}, 'CSSStyleSheet.replace allows, but ignores, import rule inside');
promise_test(() => {
const span = document.createElement("span");
thirdSection.appendChild(span);
const shadowDiv = attachShadowDiv(span);
const targetSpan = document.createElement("span");
targetSpan.classList.add("target");
shadowDiv.appendChild(targetSpan);
const sheet = new CSSStyleSheet();
span.shadowRoot.adoptedStyleSheets = [sheet];
assert_equals(getComputedStyle(shadowDiv).color, "rgb(0, 0, 0)");
// Replace and assert that the imported rule is NOT applied, but regular rule does apply.
const sheet_promise = sheet.replace(import_text + ".target { color: blue; }");
return sheet_promise.then((sheet) => {
assert_equals(sheet.cssRules.length, 1);
// @import not applied:
assert_equals(getComputedStyle(shadowDiv).color, "rgb(0, 0, 0)");
// regular rule applied:
assert_equals(getComputedStyle(targetSpan).color, "rgb(0, 0, 255)");
}).catch((reason) => {
assert_unreached(`Promise was rejected (${reason}) when it should have been resolved`);
});
}, 'CSSStyleSheet.replace ignores @import rule but still loads other rules');
test(() => {
const span = document.createElement("span");
thirdSection.appendChild(span);
const shadowDiv = attachShadowDiv(span);
const sheet = new CSSStyleSheet();
span.shadowRoot.adoptedStyleSheets = [sheet];
assert_equals(getComputedStyle(shadowDiv).color, "rgb(0, 0, 0)");
// Replace and assert that the imported rule is NOT applied.
try {
sheet.replaceSync(import_text);
// replaceSync() ignores @import rules:
assert_equals(sheet.cssRules.length, 0);
assert_equals(getComputedStyle(shadowDiv).color, "rgb(0, 0, 0)");
} catch(reason) {
assert_unreached(`replaceSync threw an exception (${reason}) when it shouldn't have`);
}
}, 'CSSStyleSheet.replaceSync allows, but ignores, import rule inside');
promise_test(() => {
const sheet = new CSSStyleSheet();
const sheet_promise = sheet.replace("@import url('not-there.css');");
return sheet_promise.then((sheet) => {
// No exception here
}).catch((reason) => {
assert_unreached("Promise was rejected");
});
}, 'CSSStyleSheet.replace does not reject on failed imports');
test(() => {
const span = document.createElement("span");
thirdSection.appendChild(span);
const shadowDiv = attachShadowDiv(span);
const sheet = new CSSStyleSheet();
span.shadowRoot.adoptedStyleSheets = [sheet];
const newSpan = span.cloneNode(true);
assert_equals(newSpan.shadowRoot, null);
}, 'Cloning a shadow host will not clone shadow root, and also adoptedStyleSheets');
test(() => {
const span = document.createElement("span");
thirdSection.appendChild(span);
const shadowDiv = attachShadowDiv(span);
const sheet = new CSSStyleSheet();
span.shadowRoot.adoptedStyleSheets = [sheet];
const iframe = document.createElement("iframe");
document.body.appendChild(iframe);
const newSpan = iframe.contentDocument.importNode(span, true);
iframe.contentDocument.body.appendChild(newSpan);
assert_equals(newSpan.shadowRoot, null);
}, 'Importing a shadow host will not copy shadow root, and also adoptedStyleSheets');
test(() => {
const span = document.createElement("span");
thirdSection.appendChild(span);
const shadowDiv = attachShadowDiv(span);
const sheet = new CSSStyleSheet();
sheet.replaceSync("* { color: red; }");
span.shadowRoot.adoptedStyleSheets = [sheet];
assert_equals(getComputedStyle(shadowDiv).color, "rgb(255, 0, 0)");
document.adoptNode(span);
assert_equals(span.shadowRoot.adoptedStyleSheets.length, 1);
assert_equals(span.shadowRoot.adoptedStyleSheets[0], sheet);
const iframe = document.createElement("iframe");
document.body.appendChild(iframe);
iframe.contentDocument.adoptNode(span);
iframe.contentDocument.body.appendChild(span);
assert_not_equals(span.shadowRoot, null);
assert_equals(span.shadowRoot.adoptedStyleSheets.length, 0);
assert_equals(getComputedStyle(shadowDiv).color, "rgb(0, 0, 0)");
}, 'Adopting a shadow host will empty adoptedStyleSheets if adopting to a different document');
test(() => {
const span = document.createElement("span");
const div = document.createElement("div");
thirdSection.appendChild(span);
span.appendChild(div);
const shadowDiv = attachShadowDiv(div);
const sheet = new CSSStyleSheet();
sheet.replaceSync("* { color: red; }");
div.shadowRoot.adoptedStyleSheets = [sheet];
assert_equals(getComputedStyle(shadowDiv).color, "rgb(255, 0, 0)");
document.adoptNode(span);
assert_equals(div.shadowRoot.adoptedStyleSheets.length, 1);
assert_equals(div.shadowRoot.adoptedStyleSheets[0], sheet);
const iframe = document.createElement("iframe");
document.body.appendChild(iframe);
iframe.contentDocument.adoptNode(span);
iframe.contentDocument.body.appendChild(span);
assert_not_equals(div.shadowRoot, null);
assert_equals(div.shadowRoot.adoptedStyleSheets.length, 0);
assert_equals(getComputedStyle(shadowDiv).color, "rgb(0, 0, 0)");
}, `Adopting a shadow host's ancestor will empty adoptedStyleSheets if adopting to a different document`);
test(() => {
const host = document.createElement("div");
const root = host.attachShadow({mode: "open"});
root.adoptedStyleSheets = [new CSSStyleSheet()];
document.body.offsetTop;
}, 'Forcing a style update after adding an adopted stylesheet on a disconnected shadow root should not crash.');
test(() => {
const host = document.createElement("div");
thirdSection.appendChild(host);
const root = host.attachShadow({mode: "open"});
const sheet = new CSSStyleSheet();
root.adoptedStyleSheets = [sheet];
host.remove();
sheet.replaceSync('');
}, 'Modifying an adopted stylesheet on a disconnected shadow root should not crash.');
function currentLocation() {
const sections = location.href.split("/")
sections.pop();
return sections.join("/");
}
test(() => {
const span = document.createElement("span");
thirdSection.appendChild(span);
const shadowDiv = attachShadowDiv(span);
const fileName = "example.png"
const fullPath = `${currentLocation()}/${fileName}`
const sheet = new CSSStyleSheet();
span.shadowRoot.adoptedStyleSheets = [sheet];
sheet.replaceSync(`* { background-image: url("${fileName}"); }`);
const styleFromRelative = getComputedStyle(shadowDiv).backgroundImage;
sheet.replaceSync(`* { background-image: url("${fullPath}"); }`);
const styleFromFull = getComputedStyle(shadowDiv).backgroundImage;
assert_equals(styleFromRelative, styleFromFull);
}, "Constructing a sheet with the default base URL uses the constructor document's base URL for CSS rules");
</script>
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