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Lift the snackbar above a toolbar placed at the bottom

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SealShare's only navigation is a floating toolbar at place="bottom". In
1.x it set --material-bottom-bar to lift the snackbar over it; in 2.0.0
the toolbar reads that variable to place itself, so an application can
no longer set it, and the snackbar landed on the toolbar. M3 nudges a
snackbar "upward to avoid overlapping FABs/docked toolbars" and never
puts one in front of navigation.

A bottom-placed toolbar now publishes --material-bottom-toolbar, the
distance from the window's bottom edge to its top: floating 64px (as
tall as an md or lg FAB beside it), docked 64px plus the safe area it
pads, rounded docked floating from 840px. It is declared on :root and
again on the scaffold's root, the only place its formula sees the bar.
The snackbar clears whichever of the bar and the toolbar reaches higher,
and a page pads its end with it. Two Chromium tests, both failing on the
old formula: a docked toolbar on a scaffold's navigation bar, and a
floating toolbar without a scaffold (plan step 46).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Andreas Reinhold / reini
2026-09-15 10:47:50 +02:00
co-authored by Claude Opus 5
parent 579af9e7a9
commit d0bed0da69
9 changed files with 124 additions and 9 deletions
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tests/Feature/Components/NavigationStylesheetsTest.php
+3 -2
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@@ -135,8 +135,9 @@ it('is imported from the navigation block of all.css', function (string $name) {
it('scopes every element-wide selector to a data-md hook', function (string $name) {
// `all.css` bundles every component stylesheet into every page, so a bare `html`, `body`,
// `dialog` or `:root` rule would restyle the application's own pages.
// `dialog` or `:root` rule would restyle the application's own pages. One that applies only
// while a package component is on the page (`:root:has([data-md-toolbar-place…])`) is scoped.
$source = (string) preg_replace('~/\*.*?\*/~s', '', ComponentStylesheet::read($name)->css);
expect($source)->not->toMatch('/(?:^|[,{};]\s*)(?:html|body|dialog|:root)(?![\w-])(?!\[data-md-|:has\(> \[data-md-)/m');
expect($source)->not->toMatch('/(?:^|[,{};]\s*)(?:html|body|dialog|:root)(?![\w-])(?!\[data-md-|:has\((?:> )?\[data-md-)/m');
})->with('navigation stylesheets');