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Bug 1899103 - Add InspectorUtils.isUsedColorSchemeDark. r=nchevobbe

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Differential Revision: https://phabricator.services.mozilla.com/D211718
This commit is contained in:
Emilio Cobos Álvarez 2024-05-28 13:16:52 +00:00
parent e16211a69e
commit a660c3ba45
5 changed files with 77 additions and 7 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

2
dom/chrome-webidl/InspectorUtils.webidl
View file

@ -78,6 +78,8 @@ namespace InspectorUtils {
boolean isElementThemed(Element element);
boolean isUsedColorSchemeDark(Element element);
Element? containingBlockOf(Element element);
// If the element is styled as display:block, returns an array of numbers giving

5
layout/inspector/InspectorUtils.cpp
View file

@ -826,6 +826,11 @@ bool InspectorUtils::IsElementThemed(GlobalObject&, Element& aElement) {
return frame && frame->IsThemed();
}
bool InspectorUtils::IsUsedColorSchemeDark(GlobalObject&, Element& aElement) {
nsIFrame* frame = aElement.GetPrimaryFrame(FlushType::Frames);
return frame && LookAndFeel::ColorSchemeForFrame(frame) == ColorScheme::Dark;
}
Element* InspectorUtils::ContainingBlockOf(GlobalObject&, Element& aElement) {
nsIFrame* frame = aElement.GetPrimaryFrame(FlushType::Frames);
if (!frame) {

16
layout/inspector/InspectorUtils.h
View file

@ -214,26 +214,28 @@ class InspectorUtils {
* Pseudo-elements which are only accepted in UA style sheets are
* not included.
*/
static void GetCSSPseudoElementNames(GlobalObject& aGlobal,
static void GetCSSPseudoElementNames(GlobalObject&,
nsTArray<nsString>& aResult);
// pseudo-class style locking methods. aPseudoClass must be a valid
// pseudo-class selector string, e.g. ":hover". ":any-link" and
// non-event-state pseudo-classes are ignored. aEnabled sets whether the
// psuedo-class should be locked to on or off.
static void AddPseudoClassLock(GlobalObject& aGlobal, Element& aElement,
static void AddPseudoClassLock(GlobalObject&, Element&,
const nsAString& aPseudoClass, bool aEnabled);
static void RemovePseudoClassLock(GlobalObject& aGlobal, Element& aElement,
static void RemovePseudoClassLock(GlobalObject&, Element&,
const nsAString& aPseudoClass);
static bool HasPseudoClassLock(GlobalObject& aGlobal, Element& aElement,
static bool HasPseudoClassLock(GlobalObject&, Element&,
const nsAString& aPseudoClass);
static void ClearPseudoClassLocks(GlobalObject& aGlobal, Element& aElement);
static void ClearPseudoClassLocks(GlobalObject&, Element&);
static bool IsElementThemed(GlobalObject& aGlobal, Element& aElement);
static bool IsElementThemed(GlobalObject&, Element&);
static bool IsUsedColorSchemeDark(GlobalObject&, Element&);
static Element* ContainingBlockOf(GlobalObject&, Element&);
static void GetBlockLineCounts(GlobalObject& aGlobal, Element& aElement,
static void GetBlockLineCounts(GlobalObject&, Element&,
Nullable<nsTArray<uint32_t>>& aResult);
MOZ_CAN_RUN_SCRIPT

2
layout/inspector/tests/mochitest.toml
View file

@ -66,6 +66,8 @@ support-files = [
["test_get_all_style_sheets.html"]
["test_isUsedColorSchemeDark.html"]
["test_is_element_themed.html"]
skip-if = ["os == 'android'"]

59
layout/inspector/tests/test_isUsedColorSchemeDark.html Normal file
View file

@ -0,0 +1,59 @@
<!doctype html>
<meta charset="utf-8">
<title>Test InspectorUtils::isUsedColorSchemeDark</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
<meta name="color-scheme" content="light dark">
<div id="dark" style="color-scheme: dark"></div>
<div id="light" style="color-scheme: light"></div>
<div id="preferred" style="color-scheme: light dark"></div>
<div id="default"></div>
<script>
const InspectorUtils = SpecialPowers.InspectorUtils;
function testElement(id, dark) {
is(InspectorUtils.isUsedColorSchemeDark(document.getElementById(id)), dark, id + " should " + (dark ? "" : "not ") + "be dark");
}
const meta = document.querySelector('meta[name="color-scheme"]');
function runTests() {
const prefersDark = matchMedia("(prefers-color-scheme: dark)").matches;
info(`testing with meta ${meta.content} and preference ${prefersDark ? "dark" : "light"}`);
testElement("dark", true);
testElement("light", false);
testElement("preferred", prefersDark);
testElement("default", meta.content.includes("dark") && (!meta.content.includes("light") || prefersDark));
}
function waitForColorSchemeToBe(scheme) {
return new Promise(resolve => {
let mq = matchMedia(`(prefers-color-scheme: ${scheme})`);
if (mq.matches) {
resolve();
} else {
mq.addEventListener("change", resolve, { once: true });
}
});
}
async function switchColorScheme(dark) {
await SpecialPowers.pushPrefEnv({ set: [["layout.css.prefers-color-scheme.content-override", dark ? 0 : 1]] });
await waitForColorSchemeToBe(dark ? "dark" : "light");
}
add_task(async function() {
runTests();
for (let dark of [false, true]) {
for (let metaValue of ["light", "dark", "light dark"]) {
meta.setAttribute("content", metaValue);
await switchColorScheme(dark);
runTests();
}
}
});
</script>