/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
const THEME_PREF =
"devtools.theme";
add_task(async
function () {
await pushPref(THEME_PREF,
"light");
await pushPref(
"devtools.high-contrast-mode-support",
true);
// force HCM
await pushPref(
"browser.display.document_color_use", 2);
await pushPref(
"ui.useAccessibilityTheme", 1);
// For some reason, mochitest spawn a very special default tab,
// whose WindowGlobal is still the initial about:blank document.
// This seems to be specific to mochitest, this doesn't reproduce
// in regular firefox run. Even having about:blank as home page,
// force loading another final about:blank document (which isn't the initial one)
//
// To workaround this, force opening a dedicated test tab
const tab = await addTab(
"data:text/html;charset=utf-8,Test page");
const toolbox = await gDevTools.showToolboxForTab(tab);
const doc = toolbox.doc;
const root = doc.documentElement;
const platform = root.getAttribute(
"platform");
const expectedPlatform = getPlatform();
is(platform, expectedPlatform,
":root[platform] is correct");
checkTheme(root, {
theme:
"light",
className:
"theme-light",
forcedColorsActive:
false,
});
await switchTheme(root,
"dark");
checkTheme(root, {
theme:
"dark",
className:
"theme-dark",
forcedColorsActive:
false,
});
// When setting theme to "auto", we rely on Services.appinfo.chromeColorSchemeIsDark.
const isDark = Services.appinfo.chromeColorSchemeIsDark;
await switchTheme(root,
"auto", isDark ?
"dark" :
"light");
checkTheme(root, {
theme: isDark ?
"dark" :
"light",
className: isDark ?
"theme-dark" :
"theme-light",
forcedColorsActive:
true,
});
info(
"Check that disabling HCM will remove the forced-colors-active attribute"
);
await pushPref(
"browser.display.document_color_use", 0);
await pushPref(
"ui.useAccessibilityTheme", 0);
checkTheme(root, {
theme: isDark ?
"dark" :
"light",
className: isDark ?
"theme-dark" :
"theme-light",
forcedColorsActive:
false,
});
await toolbox.destroy();
});
function switchTheme(root, themePrefValue, appliedTheme = themePrefValue) {
const ac =
new AbortController();
const onThemeSwitched =
new Promise(res =>
gDevTools.on(
"theme-switched",
(win, newTheme) => {
if (win === root.ownerGlobal && newTheme === appliedTheme) {
res();
ac.abort();
}
},
{ signal: ac.signal }
)
);
pushPref(THEME_PREF, themePrefValue);
return onThemeSwitched;
}
function checkTheme(root, { theme, className, forcedColorsActive }) {
const themePrefValue = Services.prefs.getCharPref(THEME_PREF);
ok(
root.classList.contains(className),
`:root has ${className}
class for ${themePrefValue} theme (${root.className})`
);
is(
root.hasAttribute(
"forced-colors-active"),
forcedColorsActive,
`high contrast mode is ${
!forcedColorsActive ?
"not " :
""
}supported in ${themePrefValue} theme`
);
const sheetsInDOM = Array.from(
root.ownerDocument.querySelectorAll(
"link[rel='stylesheet']"),
l => l.href
);
const sheetsFromTheme = gDevTools.getThemeDefinition(theme).stylesheets;
info(
"Checking for existence of " + sheetsInDOM.length +
" sheets");
for (
const themeSheet of sheetsFromTheme) {
ok(
sheetsInDOM.some(s => s.includes(themeSheet)),
"There is a stylesheet for " + themeSheet
);
}
}
function getPlatform() {
const { OS } = Services.appinfo;
if (OS ==
"WINNT") {
return "win";
}
else if (OS ==
"Darwin") {
return "mac";
}
return "linux";
}