Skip to content

Use attribute based scoping instead of classes; small optimizaitons #2

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 4 commits into from
Closed

Use attribute based scoping instead of classes; small optimizaitons #2

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
02417d8
Twiddle regex; only support me; attr-based scoping
infogulch Oct 4, 2023
c254501
Adjust replace order
infogulch Oct 4, 2023
8049ee2
Combine child and parent css scope attribute assignments
infogulch Oct 4, 2023
2060ca7
Give style node a different dataset node to avoid styles applying to …
infogulch Oct 5, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 2 additions & 2 deletions example.html
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,8 @@
<html>
<head>
<title>🌘 CSS Scope Inline Test Page</title>
<!-- ... or add as inline <script> ! -->
<script src="https://cdn.jsdelivr.net/gh/gnat/css-scope-inline/script.js"></script>
<script src="script.js"></script>
<!-- or srouce from cdn: <script src="https://cdn.jsdelivr.net/gh/gnat/css-scope-inline/script.js"></script> -->
<meta http-equiv="cache-control" content="no-cache">
<style>
*,*::before,*::after { margin: 0; box-sizing: border-box; } /* Reset */
Expand Down
14 changes: 6 additions & 8 deletions script.js
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,15 +1,13 @@
// 🌘 CSS Scope Inline (https://github.com/gnat/css-scope-inline)
window.cssScopeCount ??= 1 // Let extra copies share the scope count.
window.cssScopeCount ??= 1 // Let other scripts read the scope count.
window.cssScope ??= new MutationObserver(mutations => { // Allow 1 observer.
document?.body?.querySelectorAll('style:not([ready])').forEach(node => { // Faster than walking MutationObserver results when recieving subtree (DOM swap, htmx, ajax, jquery).
var scope = 'me__'+(window.cssScopeCount++) // Ready. Make unique scope, example: .me__1234
node.parentNode.classList.add(scope)
document?.body?.querySelectorAll('style:not([data-css-scoped])').forEach(node => { // Faster than walking MutationObserver results when recieving subtree (DOM swap, htmx, ajax, jquery).
node.dataset.cssScoped = node.parentNode.dataset.cssScope ??= (window.cssScopeCount++)
node.textContent = node.textContent
.replace(/(?:^|\.|(\s|[^a-zA-Z0-9\-\_]))(me|this|self)(?![a-zA-Z])/g, '$1.'+scope) // Can use: me this self
.replace(/((@keyframes|animation:|animation-name:)[^{};]*)\.me__/g, '$1me__') // Optional. Removes need to escape names using \
.replace(/(?:@media)\s(xs-|sm-|md-|lg-|xl-|sm|md|lg|xl|xx)/g, // Optional. Responsive design. Mobile First (above breakpoint): 🟢 None sm md lg xl xx 🏁 Desktop First (below breakpoint): 🏁 xs- sm- md- lg- xl- None 🟢 *- matches must be first!
.replace(/((@keyframes\s|animation:|animation-name:)[^{};]*)\bme(?![A-Za-z])/g, `$1css-scope-${node.parentNode.dataset.cssScope}`)
.replace(/(^|[^-\w])me(?![-\w])/g, `$1[data-css-scope='${node.parentNode.dataset.cssScope}']`)
.replace(/(?:@media)\s+(xs-|sm-|md-|lg-|xl-|sm|md|lg|xl|xx)(?![-\w])/g, // Optional responsive design shorthand for @media breakpoints. Mobile First (above breakpoint): 🟢 None sm md lg xl xx 🏁 Desktop First (below breakpoint): 🏁 xs- sm- md- lg- xl- None 🟢
(match, part1) => { return '@media '+({'sm':'(min-width: 640px)','md':'(min-width: 768px)', 'lg':'(min-width: 1024px)', 'xl':'(min-width: 1280px)', 'xx':'(min-width: 1536px)', 'xs-':'(max-width: 639px)', 'sm-':'(max-width: 767px)', 'md-':'(max-width: 1023px)', 'lg-':'(max-width: 1279px)', 'xl-':'(max-width: 1535px)'}[part1]) }
)
node.setAttribute('ready', '')
})
}).observe(document.documentElement, {childList: true, subtree: true})