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Draw the navigation bar and bar item without Tailwind

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Plan step 36 (navigation group, second batch): <x-navigation-bar>'s and
<x-navigation-bar-item>'s class lists move into
resources/css/components/navigation-bar.css and navigation-bar-item.css,
keyed on data-md-navigation-bar (data-md-tall, data-md-hide-on-scroll/
-hidden) and data-md-navigation-bar-item (data-md-active), both in
material.components. The indicator's growing fill and its state layer,
shared with the rail's item, move into a new navigation-item.css both
files import — the day's own layer in datepicker.css is the precedent
for keeping it out of the shared foundation classes: the element
focused and pressed is the whole item, the layer drawn only on the
smaller indicator or pill inside it, which md-state-layer cannot do and
:focus-visible never matches. The wash colour moves from a dead
on-surface base overridden by both items to a shared on-secondary-
container declaration, and its opacities from literal 0.08/0.1 to
state.css's own tokens — no visible change, since the numbers matched.

Every size is px (16dp Tailwind quirks aside, this file had none); the
bar's own item-count and container-query layout, N-08's label-medium
fix and N-19's on-secondary-container wash already matched the audit,
so only hooks, units and layer needed to change.

The scaffold's hide-on-scroll offset rule (`--material-bottom-bar`,
navigation-bar.css) stays unlayered: <x-scaffold> still publishes that
variable with a Tailwind utility until its own rewrite, and a rule in
any layer loses to it regardless of specificity — unlike the FAB
overrides the rail commit moves into material.components, which only
have to beat another material.components rule.

navigation.css is not deleted yet (still Tailwind's for the rail); its
"Navigation" comment in tailwind.css narrows as each stream leaves.
navigation-bar.css is not in NavigationStylesheetsTest.php's dataset:
its one unlayered rule breaks that test's "every block is
material.components" assumption, so the same checks are in
NavigationBarTest.php instead, the same reason ErrorPagesTest.php
carries error-page.css's.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
This commit is contained in:
Andreas Reinhold / reini
2026-09-15 00:08:34 +02:00
co-authored by Claude Sonnet 5
parent 1f9384efdf
commit 63d421ccb6
8 changed files with 414 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files
resources/css/components.css
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@import './components/app-bar.css';
@import './components/toolbar.css';
@import './components/tabs.css';
@import './components/navigation-item.css';
@import './components/navigation-bar.css';
@import './components/navigation-bar-item.css';
resources/css/components/navigation-bar-item.css
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/*
* `<x-navigation-bar-item>`: one destination in an `<x-navigation-bar>`
* (NavigationBarVerticalItemTokens.kt, NavigationBarHorizontalItemTokens.kt, androidx Compose
* Material 3, Apache-2.0).
*
* [data-md-navigation-bar-item] data-md-active; the link or button itself
* [data-md-navigation-pill] icon and label; becomes the indicator from 600px
* [data-md-navigation-indicator] the 56×32 indicator around the icon below 600px
* [data-md-navigation-icon] the floating badge's anchor (navigation-item.css)
* [data-md-navigation-label]
*
* Below 600px (the bar's own width — a container query, so a bar in a narrow column keeps this
* layout) the icon sits in a 56×32 `CornerFull` indicator over a label-medium label, both equally
* wide. From 600px icon and label share a 40px horizontal indicator with 16px leading and
* trailing space; the label stays label-medium — `NavigationBarTokens.LabelTextFont` is the bar's
* only label token, and Compose's `ShortNavigationBarItem` passes it for both icon positions (the
* *rail's* horizontal item is label-large, a different component's token; N-08). An active item is
* secondary-container behind on-secondary-container (icon and, from 600px, label); its indicator's
* fill is a background image so it can grow from its centre (navigation-item.css) rather than
* stretch the icon.
*
* The indicator's growing fill and its state layer are shared with the rail's item
* (navigation-item.css); only this file's focus ring and the display swap between the two
* indicator shapes are the bar's own.
*/
@layer material.reset, material.tokens, material.base, material.layout, material.components, material.text, material.visibility;
@import './icon.css';
@import './badge.css';
@import './navigation-item.css';
@layer material.components {
[data-md-navigation-bar-item] {
--navigation-layer: 0;
position: relative;
display: flex;
flex: 1 1 0%;
min-width: 0;
align-items: center;
justify-content: center;
padding-block: 6px;
color: var(--md-sys-color-on-surface-variant);
text-decoration: none;
cursor: pointer;
outline: none;
-webkit-tap-highlight-color: transparent;
}
[data-md-navigation-bar-item][data-md-active] {
color: var(--md-sys-color-secondary);
}
[data-md-navigation-bar-item] [data-md-navigation-pill] {
display: flex;
min-width: 0;
max-width: 100%;
flex-direction: column;
align-items: center;
gap: 4px;
border-radius: var(--md-sys-shape-corner-full);
font: var(--md-sys-typescale-label-md);
letter-spacing: var(--md-sys-typescale-label-md-tracking);
}
[data-md-navigation-bar-item] [data-md-navigation-label] {
max-width: 100%;
padding-inline: 4px;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
[data-md-navigation-bar-item] [data-md-navigation-indicator] {
position: relative;
isolation: isolate;
display: flex;
flex-shrink: 0;
align-items: center;
justify-content: center;
width: 56px;
height: 32px;
border-radius: var(--md-sys-shape-corner-full);
}
/* Vertical layout (below 600px, or a tall bar at any width): the indicator fills behind the
icon; the pill draws no layer of its own. */
[data-md-navigation-bar-item][data-md-active] [data-md-navigation-indicator] {
background-image: linear-gradient(var(--md-sys-color-secondary-container), var(--md-sys-color-secondary-container));
color: var(--md-sys-color-on-secondary-container);
}
[data-md-navigation-bar-item] [data-md-navigation-pill]::before {
display: none;
}
[data-md-navigation-bar-item]:focus-visible [data-md-navigation-indicator] {
outline: 3px solid var(--md-sys-color-secondary);
outline-offset: 2px;
}
/* Horizontal layout, from 600px: the pill itself fills and takes the layer; the indicator
stops drawing either. Only the short bar (a tall bar keeps the vertical layout). */
@container (width >= 600px) {
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-item] {
min-width: max-content;
}
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-item] [data-md-navigation-pill] {
position: relative;
isolation: isolate;
flex-direction: row;
height: 40px;
padding-inline: 16px;
}
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-item] [data-md-navigation-label] {
padding-inline: 0;
}
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-item][data-md-active] {
color: var(--md-sys-color-on-secondary-container);
}
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-item][data-md-active] [data-md-navigation-pill] {
background-image: linear-gradient(var(--md-sys-color-secondary-container), var(--md-sys-color-secondary-container));
}
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-item][data-md-active] [data-md-navigation-indicator] {
background-image: none;
}
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-item] [data-md-navigation-pill]::before {
display: block;
}
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-item] [data-md-navigation-indicator]::before {
display: none;
}
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-item]:focus-visible [data-md-navigation-indicator] {
outline: none;
}
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-item]:focus-visible [data-md-navigation-pill] {
outline: 3px solid var(--md-sys-color-secondary);
outline-offset: 2px;
}
}
}
resources/css/components/navigation-bar.css
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/*
* `<x-navigation-bar>`: M3 Expressive's flexible navigation bar, three to five destinations
* pinned to the bottom of a compact or medium window (NavigationBarTokens.kt, androidx Compose
* Material 3, Apache-2.0, and the layout of ShortNavigationBar.kt;
* docs/reference/m3/components-navigation-selection-inputs.md § Navigation Bar).
*
* [data-md-navigation-bar] 64px in surface-container; data-md-tall (80px),
* data-md-hide-on-scroll and data-md-hidden
* [data-md-navigation-bar-items] equal widths below 600px; centred with Compose's
* calculateCenteredContentHorizontalPadding from it
* [data-md-navigation-bar-item] navigation-bar-item.css
*
* `data-md-tall` is `NavigationBarTokens.TallContainerHeight`, 80px against the short bar's 64
* (`ContainerHeight`) — Missing until this rewrite. It keeps the vertical, icon-over-label item
* layout at every width, so every rule below that only the short bar's horizontal layout needs
* says `:not([data-md-tall])` first.
*
* `data-md-hide-on-scroll` is M3's scrolling behaviour, also Missing until now: "hides on
* scroll-down, reappears on scroll-up… never hide it while a screen reader is active"
* (§ Navigation Bar/Behaviour). resources/js/navigation.js drives `data-md-hidden` and never hides
* the bar while a snackbar, a bottom sheet or a drawer rests on its edge — those are anchored to
* its bottom edge and would slide with it — and focus reaching the bar brings it back, the web's
* nearest equivalent of "a screen reader is active". It slides on the default spatial spring,
* which reduced motion zeroes along with every other duration token.
*
* The item's own indicator, pill and state layer (shared with the rail item) are
* navigation-bar-item.css and navigation-item.css.
*/
@layer material.reset, material.tokens, material.base, material.layout, material.components, material.text, material.visibility;
@layer material.components {
[data-md-navigation-bar] {
container-type: inline-size;
padding-inline: var(--material-safe-left, env(safe-area-inset-left)) var(--material-safe-right, env(safe-area-inset-right));
padding-bottom: var(--material-safe-bottom, env(safe-area-inset-bottom));
background-color: var(--md-sys-color-surface-container);
color: var(--md-sys-color-on-surface-variant);
}
[data-md-navigation-bar-items] {
display: flex;
min-height: 64px;
margin-inline: auto;
}
[data-md-navigation-bar][data-md-tall] [data-md-navigation-bar-items] {
min-height: 80px;
}
[data-md-navigation-bar][data-md-hide-on-scroll] {
transition: translate var(--md-sys-motion-spatial-default-duration) var(--md-sys-motion-spatial-default);
}
[data-md-navigation-bar][data-md-hide-on-scroll][data-md-hidden] {
translate: 0 100%;
}
/* From 600px (M3's medium window, the bar's own width): icon and label side by side in a
40px pill, the items gathered in the middle with Centered arrangement's own padding. The
short bar only — a tall bar is the vertical layout everywhere. */
@container (width >= 600px) {
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-items] {
width: calc(10% * (var(--navigation-bar-count, 7) + 3));
min-width: fit-content;
max-width: 100%;
}
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-items]:has(> :last-child:nth-child(1)) { --navigation-bar-count: 1; }
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-items]:has(> :last-child:nth-child(2)) { --navigation-bar-count: 2; }
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-items]:has(> :last-child:nth-child(3)) { --navigation-bar-count: 3; }
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-items]:has(> :last-child:nth-child(4)) { --navigation-bar-count: 4; }
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-items]:has(> :last-child:nth-child(5)) { --navigation-bar-count: 5; }
[data-md-navigation-bar]:not([data-md-tall]) [data-md-navigation-bar-items]:has(> :last-child:nth-child(6)) { --navigation-bar-count: 6; }
}
}
/*
* A bar that has slid off the bottom of the window is no longer there to clear, so the offset
* everything pinned to the bottom reads drops to the bottom safe area and whatever the application
* has docked on the bar — a `fab` button, the snackbar and the page's own bottom padding all follow
* it down and come back up with it. Unlayered on purpose, still: <x-scaffold> (its own rewrite is a
* later batch) publishes --material-bottom-bar with a Tailwind utility
* (`max-medium:[--material-bottom-bar:…]`), and a rule in any layer loses to an unlayered utility
* regardless of specificity — unlike toolbar.css's and fab.css's overrides, which only have to beat
* another `material.components` rule. Keyed on `data-md-scaffold`, the hook the scaffold already
* renders, not `data-app-shell`, which belongs to that later rewrite.
*/
[data-md-scaffold]:has([data-md-navigation-bar][data-md-hide-on-scroll][data-md-hidden]) {
--material-bottom-bar: calc(var(--material-safe-bottom, env(safe-area-inset-bottom)) + var(--material-bottom-extra, 0px));
}
resources/css/components/navigation-item.css
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/*
* Shared between `<x-navigation-bar-item>` and `<x-navigation-rail-item>` (imported by both
* navigation-bar-item.css and navigation-rail-item.css): the destination indicator's growing fill
* and its state layer, on androidx's one stated colour for a navigation item's layer.
*
* `NavigationRailColorTokens.kt` gives one colour for all six states, active or not:
* `ItemActiveHoveredStateLayer = … = ItemInactivePressedStateLayer = OnSecondaryContainer`.
* `NavigationBarTokens.kt` states no state-layer tokens of its own, so the bar's item takes the
* rail's (N-19). Hover only where a pointer can hover, so a touch screen does not keep the last
* hover after a tap; state.css's own opacities (8% hover, 10% focus and press) rather than the
* package's `md-state-layer` class, because the element focused and pressed is the whole item
* while the layer is drawn only on the smaller indicator or pill inside it — `md-state-layer`
* cannot draw on a different element than the one it decorates, and `:focus-visible` never
* matches a child (the same reason datepicker.css keeps the day's own layer).
*
* The active indicator itself is a secondary-container fill painted as a background image so it
* can grow out of its centre without stretching the icon: when a page arrives through
* wire:navigate, resources/js/navigation.js starts it at zero width for a moment and it springs
* open on the default spatial spring, as Compose's indicator does when the selection changes
* (NavigationItem.kt). A full page load draws it at once; reduced motion zeroes the transition.
*/
@layer material.reset, material.tokens, material.base, material.layout, material.components, material.text, material.visibility;
@layer material.components {
[data-md-navigation-bar-item] :is([data-md-navigation-indicator], [data-md-navigation-pill]),
[data-md-navigation-rail-item],
[data-md-navigation-rail-item] [data-md-navigation-indicator] {
background-position: center;
background-repeat: no-repeat;
background-size: 100% 100%;
transition: background-size var(--md-sys-motion-spatial-default-duration) var(--md-sys-motion-spatial-default);
}
@media (hover: hover) {
:is([data-md-navigation-bar-item], [data-md-navigation-rail-item]):hover {
--navigation-layer: var(--md-sys-state-hover-state-layer-opacity);
}
}
:is([data-md-navigation-bar-item], [data-md-navigation-rail-item]):focus-visible {
--navigation-layer: var(--md-sys-state-focus-state-layer-opacity);
}
:is([data-md-navigation-bar-item], [data-md-navigation-rail-item]):active {
--navigation-layer: var(--md-sys-state-pressed-state-layer-opacity);
}
[data-md-navigation-bar-item] [data-md-navigation-indicator]::before,
[data-md-navigation-bar-item] [data-md-navigation-pill]::before,
[data-md-navigation-rail-item]::before,
[data-md-navigation-rail-item] [data-md-navigation-indicator]::before {
content: '';
position: absolute;
inset: 0;
z-index: -1;
border-radius: inherit;
background-color: var(--md-sys-color-on-secondary-container);
opacity: var(--navigation-layer, 0);
pointer-events: none;
transition: opacity var(--md-sys-motion-effects-fast-duration) var(--md-sys-motion-effects-fast);
}
/* The wrapper a floating badge anchors to: tight around the glyph alone, not the wider
indicator or pill around it, so the badge sits at the icon's own corner (badge.css). */
[data-md-navigation-icon] {
position: relative;
display: inline-flex;
}
}