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doc: make header smaller and dropdown click-driven when JS is on
PR-URL: #42165 Fixes: #42286 Reviewed-By: Antoine du Hamel <[email protected]>
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Original file line number | Diff line number | Diff line change |
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@@ -7,4 +7,5 @@ tools/icu | |
tools/lint-md/lint-md.mjs | ||
benchmark/tmp | ||
doc/**/*.js | ||
!doc/api_assets/*.js | ||
!.eslintrc.js |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,141 @@ | ||
'use strict'; | ||
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{ | ||
function setupTheme() { | ||
const kCustomPreference = 'customDarkTheme'; | ||
const userSettings = sessionStorage.getItem(kCustomPreference); | ||
const themeToggleButton = document.getElementById('theme-toggle-btn'); | ||
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if (userSettings === null && window.matchMedia) { | ||
const mq = window.matchMedia('(prefers-color-scheme: dark)'); | ||
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if ('onchange' in mq) { | ||
function mqChangeListener(e) { | ||
document.documentElement.classList.toggle('dark-mode', e.matches); | ||
} | ||
mq.addEventListener('change', mqChangeListener); | ||
if (themeToggleButton) { | ||
themeToggleButton.addEventListener('click', function() { | ||
mq.removeEventListener('change', mqChangeListener); | ||
}, { once: true }); | ||
} | ||
} | ||
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if (mq.matches) { | ||
document.documentElement.classList.add('dark-mode'); | ||
} | ||
} else if (userSettings === 'true') { | ||
document.documentElement.classList.add('dark-mode'); | ||
} | ||
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if (themeToggleButton) { | ||
themeToggleButton.hidden = false; | ||
themeToggleButton.addEventListener('click', function() { | ||
sessionStorage.setItem( | ||
kCustomPreference, | ||
document.documentElement.classList.toggle('dark-mode') | ||
); | ||
}); | ||
} | ||
} | ||
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function setupPickers() { | ||
function closeAllPickers() { | ||
for (const picker of pickers) { | ||
picker.parentNode.classList.remove('expanded'); | ||
} | ||
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window.removeEventListener('click', closeAllPickers); | ||
window.removeEventListener('keydown', onKeyDown); | ||
} | ||
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function onKeyDown(e) { | ||
if (e.key === 'Escape') { | ||
closeAllPickers(); | ||
} | ||
} | ||
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const pickers = document.querySelectorAll('.picker-header > a'); | ||
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for (const picker of pickers) { | ||
const parentNode = picker.parentNode; | ||
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picker.addEventListener('click', (e) => { | ||
e.preventDefault(); | ||
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/* | ||
closeAllPickers as window event trigger already closed all the pickers, | ||
if it already closed there is nothing else to do here | ||
*/ | ||
if (parentNode.classList.contains('expanded')) { | ||
return; | ||
} | ||
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/* | ||
In the next frame reopen the picker if needed and also setup events | ||
to close pickers if needed. | ||
*/ | ||
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requestAnimationFrame(() => { | ||
parentNode.classList.add('expanded'); | ||
window.addEventListener('click', closeAllPickers); | ||
window.addEventListener('keydown', onKeyDown); | ||
}); | ||
}); | ||
} | ||
} | ||
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function setupStickyHeaders() { | ||
const header = document.querySelector('.header'); | ||
let ignoreNextIntersection = false; | ||
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new IntersectionObserver( | ||
([e]) => { | ||
const currentStatus = header.classList.contains('is-pinned'); | ||
const newStatus = e.intersectionRatio < 1; | ||
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// Same status, do nothing | ||
if (currentStatus === newStatus) { | ||
return; | ||
} else if (ignoreNextIntersection) { | ||
ignoreNextIntersection = false; | ||
return; | ||
} | ||
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/* | ||
To avoid flickering, ignore the next changes event that is triggered | ||
as the visible elements in the header change once we pin it. | ||
The timer is reset anyway after few milliseconds. | ||
*/ | ||
ignoreNextIntersection = true; | ||
setTimeout(() => { | ||
ignoreNextIntersection = false; | ||
}, 50); | ||
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header.classList.toggle('is-pinned', newStatus); | ||
}, | ||
{ threshold: [1] } | ||
).observe(header); | ||
} | ||
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function bootstrap() { | ||
// Check if we have JavaScript support | ||
document.documentElement.classList.add('has-js'); | ||
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// Restore user mode preferences | ||
setupTheme(); | ||
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// Handle pickers with click/taps rather than hovers | ||
setupPickers(); | ||
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// Track when the header is in sticky position | ||
setupStickyHeaders(); | ||
} | ||
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if (document.readyState === 'loading') { | ||
document.addEventListener('DOMContentLoaded', bootstrap, { once: true }); | ||
} else { | ||
bootstrap(); | ||
} | ||
} |
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