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Count a text field's characters against its maximum

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M3 lists "supporting text + character counter" as a configuration of both
text-field variants; nothing in the package drew one (plan step 24, audit
docs/audits/m3-alignment/inputs.md § Missing). `counter` on `<x-input>` and
`<x-textarea>` now puts `n/max` at the end of the supporting-text row, counted
from the control on every input, in the error colour past the maximum, and said
as M3's own "Character count, 5/20" from a polite region once typing settles.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
This commit is contained in:
Andreas Reinhold / reini
2026-09-14 06:21:22 +02:00
co-authored by Claude Fable 5.1
parent 71442831ff
commit c8c2d2e13e
7 changed files with 127 additions and 14 deletions
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resources/views/components/field.blade.php
+51 -7
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@@ -14,6 +14,13 @@
at the end of the row so the state has two indicators and not only a colour — unless the caller
trails the field with something of its own, or the field is `xs` and has no room.
`counter` is the maximum number of characters, and puts M3's character counter at the end of the
supporting-text row: `n/max`, counted from the control on every `input`, in the error colour once
the value is past the maximum
(docs/reference/m3/components-navigation-selection-inputs.md § Text Fields). It is said as
"Character count, 5/20", M3's own label, from a polite region a second after typing stops rather
than on every keystroke, which would talk over the typing.
`class` from the call site lands on the outermost element, never the control, so a margin or
a width is safe here. --}}
@@ -30,6 +37,7 @@
'variant' => null,
'floated' => false,
'mono' => false,
'counter' => null,
])
@php
@@ -40,6 +48,7 @@
// M3 pairs the error colours with a trailing error icon so the state has two indicators. It
// gives way to whatever the caller trails the field with, and to `xs`, which has no room.
$errorIcon = $messages !== [] && ! isset($trailing) && $density !== 'xs';
$counter = filled($counter) && (int) $counter > 0 ? (int) $counter : null;
@endphp
<div
@@ -80,13 +89,48 @@
@endif
</div>
@if ($messages !== [])
<div id="{{ $id }}-support" class="field-support" role="alert">
@foreach ($messages as $message)
<p>{{ $message }}</p>
@endforeach
@if ($messages !== [] || filled($hint) || $counter !== null)
<div class="field-support-row">
@if ($messages !== [])
<div id="{{ $id }}-support" class="field-support" role="alert">
@foreach ($messages as $message)
<p>{{ $message }}</p>
@endforeach
</div>
@elseif (filled($hint))
<p id="{{ $id }}-support" @class(array_filter(['field-support', $hintClass]))>{{ $hint }}</p>
@endif
@if ($counter !== null)
<span
class="field-counter"
data-field-counter
x-data="{
used: 0,
max: {{ $counter }},
spoken: '',
settle: null,
init() {
const control = this.$el.closest('.field').querySelector('.field-control');
this.used = control.value.length;
control.addEventListener('input', () => (this.used = control.value.length));
this.$watch('used', () => {
clearTimeout(this.settle);
this.settle = setTimeout(() => (this.spoken = @js(__('Character count, :used/:max')).replace(':used', this.used).replace(':max', this.max)), 1000);
});
},
destroy() {
clearTimeout(this.settle);
},
}"
x-bind:data-over="used > max"
>
<span aria-hidden="true" x-text="`${used}/${max}`">0/{{ $counter }}</span>
<span class="sr-only" aria-live="polite" aria-atomic="true" x-text="spoken"></span>
</span>
@endif
</div>
@elseif (filled($hint))
<p id="{{ $id }}-support" @class(array_filter(['field-support', $hintClass]))>{{ $hint }}</p>
@endif
</div>