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>
Plan step 36 ("Interaction is the shared classes", the user, 2026-09-14).
The action and the close button hand-rolled md-state-layer, md-focus-ring
and md-touch-target, and toast.css's own header said so; both now render
the classes and keep only their own size and colour.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
Plan step 36. The rewrite drew Tailwind's `flex-1` (flex: 1 1 0%) as
`flex: 1 1 auto`. In a wrapping row that measures the text at its full
line length, so a long title pushed the action onto a line of its own
from 600px, where the two used to share one. The header also gave a
reason for drawing the buttons' state layer by hand that does not hold
(the layer is currentColor either way); it now says why: the view writes
no class list, as button.css.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
Plan step 36 (actions). <x-toast> renders data-md-toast with
data-md-position, its snackbar data-md-toast-snackbar with a bound
data-md-two-line, data-md-toast-content with a bound
data-md-toast-wrap, and data-md-toast-action/-dismiss; no class list.
toast.css draws SnackbarTokens' inverse surface, 48/68px container,
the two 40px controls reaching 48px targets with their own state
layer and touch target (ACT-18), the enter transition and the
position-start margin that grows from medium.
data-toast becomes data-md-toast-snackbar and data-toast-action
becomes data-md-toast-action (snackbar.js, navigation.js's
hide-on-scroll guard, NavigationBarTest, CommunicationTest); a new
data-md-toast-dismiss hook names the close button. ToastTest is
rewritten on the hooks and ComponentStylesheet. CommunicationTest
gains the owed tests: an actioned snackbar past the default timeout,
Escape on a focused one, the live region before any message, and the
two-line height with Alt+G reaching the action from elsewhere on the
page.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
Plan step 22, actions.md § Missing (two-line snackbar height, snackbar
keyboard shortcut): the container grew organically from `min-h-12` rather
than sitting at SnackbarTokens.TwoLinesContainerHeight, and there was no
way for a keyboard to reach an actioned snackbar at all.
A `description` is M3's second line, so the snackbar is pinned to 68px
whenever one is there, and below `medium` a two-line snackbar with an
action wraps the action under the text — M3's "two lines with longer
action" configuration. Alt+G, the shortcut M3 suggests for the web, moves
the focus to a snackbar that carries an action from wherever the page had
it; `event.code`, because Alt rewrites `event.key` on some layouts.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
M3 says to avoid an icon in a snackbar and gives the supporting text no fourth
colour, so the state glyph and the 80% description are gone: a type now only
picks the announcement role. The 40px action and close buttons take the shared
touch-target, Escape dismisses a snackbar that holds the focus, and the host
publishes --material-snackbar-height on <html> so a `fab` button sits above the
snackbar instead of under it. Plan step 18, actions.md ACT-17, ACT-18, ACT-20,
ACT-34, ACT-35.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
The region carrying aria-live was created together with its message, inside the
x-if that draws the snackbar, so a screen reader had nothing to notice changing.
It moves to the permanent host, which is polite and atomic as M3 asks; a type
now only picks the region's role, and the explicit aria-live keeps an error
polite too. Plan step 11, actions.md ACT-02.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
A sticky toast stays until it is dismissed or its action pressed, for a
question that must be answered ("A new version is ready" with Reload).
It is kept aside rather than queued, so it never holds up ordinary
toasts: one that arrives while it shows takes its place, and the sticky
toast comes back once the queue is empty. One is kept at a time; a newer
sticky toast replaces it. Every other toast keeps today's queue.
An action's `event` names a window event dispatched when it is pressed,
beside `handler`, for toasts whose detail cannot carry a function. The
snackbar now closes before either runs, so a toast they show is not the
one dismissed.
`data-toast` and `data-toast-action` give applications stable hooks for
their tests.
The queue now forgets a cleared timer in next(): a toast dismissed by a
click that neither hovered nor focused it first, as a screen reader
activates a button, left its timer running and cut the next toast short.
The showcase's snackbar buttons had no Alpine scope and did nothing; they
are wrapped in one, with a sticky example.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RHoXZSHc8gGpZjFmA5fPc2
<x-toast> hosts the snackbar queue for the Toasts concern and
window.materialToast(), one at a time, paused on hover and focus, with
an optional action; it listens from the moment its script loads, so a
toast dispatched before Alpine starts is shown rather than lost.
<x-badge> is M3's dot and count, plus a tonal or outlined status label;
<x-rich-tooltip> is transient or persistent; <x-alert>, <x-stat> and
<x-empty-state> are built from M3's parts.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V9NnLxnPp8vaaurb3Z1MFy
