ボタン
1 回のタップまたはクリックで、アクションの実行、オン・オフの切り替え、移動先への移動を行えるようにします。
- カテゴリ
- アクション
- トークン
comp.button- レベル
- 基礎
- 使用先
- Chat composer, Copy button
- Web
tanrei-buttonschedule - SwiftUI
TanreiButtonschedule - Jetpack Compose
TanreiButtonschedule - Flutter
TanreiButtonschedule - React Native
Buttonschedule
生成元 docs/status/status.json, specs/button.spec.json
バリアント
プレイグラウンド
Web と React の例は現在の仕様に沿っています。SwiftUI、Compose、Flutter、React Native は追従待ちで、ボタンの以前の版を提供しています。そこでは、アイコンだけの形とトグルは別のアイコンボタンで、アイコンだけのボタンの幅とリンクの形はまだありません。追いつくまで、これらの例はその版のものです。
<tanrei-button variant="filled">デプロイ</tanrei-button>
<tanrei-button variant="outlined" size="small">キャンセル</tanrei-button>
<tanrei-button busy busy-label="デプロイ中">デプロイ</tanrei-button>
<!-- href があるとリンクになります。見た目は同じボタンです。 -->
<tanrei-button variant="tonal" href="/pricing/">料金を見る</tanrei-button>
<script type="module">
import '@tanrei/web/components/button';
document.querySelector('tanrei-button').addEventListener('click', deploy);
</script>import { Button } from '@tanrei/react';
<Button variant="filled" onClick={deploy}>デプロイ</Button>
<Button variant="outlined" size="small" onClick={cancel}>キャンセル</Button>
<Button disabled>デプロイ中…</Button>
// href があるとリンクになります。見た目は同じボタンです。
<Button variant="tonal" href="/pricing/">料金を見る</Button>import Tanrei
TanreiButton("デプロイ", variant: .filled) { deploy() }
TanreiButton("キャンセル", variant: .outlined, size: .small) { cancel() }
// 無効化は SwiftUI の環境値に従います。
TanreiButton("デプロイ中…") {}
.disabled(true)import io.github.chnotchy.tanrei.components.*
TanreiButton(text = "デプロイ", onClick = ::deploy, variant = TanreiButtonVariant.Filled)
TanreiButton(text = "キャンセル", onClick = ::cancel, variant = TanreiButtonVariant.Outlined, size = TanreiButtonSize.Small)
// Compose では逆向きのフラグ enabled を使います。
TanreiButton(text = "デプロイ中…", onClick = {}, enabled = false)import 'package:tanrei/tanrei.dart';
TanreiButton(variant: TanreiButtonVariant.filled, onPressed: deploy, child: const Text('デプロイ'));
TanreiButton(variant: TanreiButtonVariant.outlined, size: TanreiButtonSize.small, onPressed: cancel, child: const Text('キャンセル'));
// onPressed が null のとき、ボタンは無効になります。
TanreiButton(onPressed: null, child: const Text('デプロイ中…'));import { Button } from '@tanrei/react-native';
<Button variant="filled" onPress={deploy}>デプロイ</Button>
<Button variant="outlined" size="small" onPress={cancel}>キャンセル</Button>
<Button disabled>デプロイ中…</Button>ボタンはラベルの横にアイコンを持てます。位置は先頭で、iconPosition を trailing にすると末尾です。アイコンのある側のパディングはラベルの側より 1 段狭く、両側が同じくらいの余白に見えます。ラベルがなければアイコンだけのボタンになります。高さと同じ幅の円で、名前は label から取るので、このときは label が必須です。toggle を付けると、押すたびに自分の selected を切り替え、色とグリフの塗りで状態を示し、押された状態として読み上げさせます。
アイコンだけのボタンとトグル
Tanrei にはアイコンボタンという別のコンポーネントはありません。Material の名前は次のように対応します。
| Material | Tanrei |
|---|---|
| Icon button | アイコンがありラベルのないボタン |
| Standard icon button | text バリアント |
| Filled / Tonal / Outlined icon button | filled、tonal、outlined バリアント |
| Icon toggle button | toggle と selected |
Text のトグルにはアイコンを付けてください。コンテナのない Text のトグルは、ラベルだけだと文字色の変化でしか状態を示せません。グリフの塗りが状態を見えるようにします。
アイコンだけのボタンには 3 つの幅があります。幅を変えても高さは変わりません。ラベルのあるボタンは width を無視します。
width |
既定のシステムでの幅（small / medium / large） | 用途 |
|---|---|---|
default |
高さと同じ幅：32 / 40 / 56。円になります | ほとんどのアイコンのアクション。 |
narrow |
グリフと、その両側の小さな余白：28 / 32 / 32。カプセル形になります | アイコンのアクションを詰めて並べる行。フィールドの末尾のツールや、密度の高い表の行など。 |
wide |
40 / 52 / 72。カプセル形になります | 行の中で、隣より重みを持たせたい 1 つのアクション。 |
アイコンだけのボタンの幅：default、narrow、wide
narrow のボタンは、グリフとその両側の余白だけでできています。そのため、グリフがカプセルの端に触れることはなく、デザインシステムがグリフの大きさを変えれば、ボタンもそれに従います。見た目は最小ターゲットより狭くなりますが、ヒット領域は狭くなりません。ターゲットは見えている端の外側まで届きます。ボタンの横にその分の余裕を取るか、項目の間隔を自分で取るツールバーやボタングループの中に置いてください。
ボタンが始めたアクションが進んでいる間は、disabled ではなく busy を設定します。ビジー状態のボタンは、大きさも、フォーカス順の位置も、利用者のフォーカスも保ちます。ラベルの代わりにローディングインジケーターの弧を描き、押されてもすべて受け付けないので、送信ボタンがフォームを 2 度送信することはありません。フォームのフィールドでの Enter も止めます。支援技術には、ボタンがビジー状態になったときに 1 度だけ busy-label（「デプロイ中」）が読み上げられます。アクションが終わったときにはボタンは何も読み上げないので、何が起きたかは利用者側で伝えます。
無効なボタンはフォーカス順から外れるので、キーボードやスクリーンリーダーの利用者は、そのボタンを見つけられないことがあり、なぜ何も起きないのかもわかりません。メッセージが空の間の送信ボタンのように、利用者が操作すればアクションを使えるようになる場合は、focusable-when-disabled を追加します。ボタンは無効として描かれ、無効として読み上げられ、何もしませんが、Tab では届くので、ツールチップや説明で理由を伝えられます。
ビジー状態と、Tab で届く無効状態
full-width を指定すると、ボタンはコンテナと同じ幅になります。幅の狭いフォーム、カード、シートの末尾に置く 1 つだけのアクションなどに使います。高さ、余白、角はそのサイズのままで、ラベルとアイコンは中央に置かれます。収まらないラベルは切り詰められず、折り返します。ボタングループ、ツールバー、ダイアログやポップオーバーのアクションのようにボタンを並べる側がある場合は、その側が幅を決めるので、ボタンの full-width は何もしません。複数のボタンで 1 行を分け合うには、ボタングループに full-width を指定します。
全幅のボタン
元に戻せないかもしれないものを削除したり破棄したりするアクション（削除、破棄、メンバーを外す）のボタンには、destructive を設定します。ボタンは自分の variant の強調を保ったまま、その中でエラーの色を使います。Filled はエラーの色で、Tonal はエラーのコンテナの色で塗られます。Elevated、Outlined、Text はラベルをエラーの色で描き、Outlined は輪郭もその色にします。無効のときは、同じ variant の無効のボタンと同じ見た目です。
variant は、ほかのアクションと同じように選びます。削除がその画面の目的そのものであるとき、たとえば「プロジェクトを削除しますか？」ダイアログの確定のアクションには Filled を使います。いくつかあるアクションの 1 つにすぎないとき、たとえばリストの各行の「外す」には Outlined か Text を使います。アイコンだけのボタンにも destructive を設定できますが、元に戻せないアクションには、グリフよりラベルのほうが明確です。トグルには破壊的な見た目はありません。
リンクにもありません。href を持つボタンは destructive を無視し、その variant のリンクとして描かれます。リンクをたどっても何も消えないからです。リンクは、何かを削除できる場所へ連れて行くだけです。印を付けるのはその場所のアクション、たとえばリンク先のページの「削除」ボタンです。デバッグビルドは、destructive を付けたリンクを報告します。
各 variant の破壊的なボタンと、アイコンだけのボタン
ボタンに href を指定すると、ボタンではなくリンクになります。コントロールは同じで、どの状態でも同じトークンで描かれますが、ロールはリンクになり、プラットフォームがリンクに与えるものがすべて使えます。Web では本物のアンカーなので、新しいタブで開く、アドレスをコピーする、移動する前に行き先を確かめる、といったことができます。押すと別の場所へ移動するだけのコントロールには、必ずこの形を使います。ふつうのボタンの click で移動させることはしません。
リンク：同じ場所、新しいタブ、アイコンだけ、無効
<tanrei-button href="/getting-started/">はじめる</tanrei-button>
<!-- 新しいタブ。ラベルの後ろの印は自動で描かれます。target-label はスクリーンリーダーが読み上げる文言です。 -->
<tanrei-button variant="outlined" href="https://example.com/source" target="new" target-label="新しいタブで開きます">
ソースを見る
</tanrei-button>
<!-- Web のみ：rel と download はアンカーに渡されます。 -->
<tanrei-button variant="tonal" href="/report.pdf" download="report.pdf"><span slot="icon">download</span>レポートをダウンロード</tanrei-button>
<script type="module">
import '@tanrei/web/components/button';
// click が先に発火します。クライアントサイドのルーターはこれをキャンセルして、移動を自分で引き受けます。
document.querySelector('[href="/getting-started/"]').addEventListener('click', (event) => {
event.preventDefault();
router.navigate('/getting-started/');
});
</script>import { Button } from '@tanrei/react';
<Button href="/getting-started/">はじめる</Button>
<Button variant="outlined" href="https://example.com/source" target="new" targetLabel="新しいタブで開きます">
ソースを見る
</Button>
// click が先に発火します。クライアントサイドのルーターはこれをキャンセルして、移動を自分で引き受けます。
<Button
href="/getting-started/"
onClick={(event) => {
event.preventDefault();
router.navigate('/getting-started/');
}}
>
はじめる
</Button>- キー。 Enter でリンク先へ移動します。Space は、ボタンでの働きではなく、ふつうのリンクの上での働きをします（Web ではページがスクロールします）。
target。same（既定）は、いまいる場所で移動先を開きます。newは新しいタブかウィンドウで開きます。このとき、ラベルのあるボタンはラベルの後ろにopen_in_newのグリフを表示します（自分で末尾のアイコンを置いている場合を除きます）。またtargetLabelが必須になります。Tanrei は文言を持たないので、「新しいタブで開きます」にあたる言葉をプロダクトの言語で指定します。- 無効。 無効なリンクのボタンは、移動も、コピーも、ドラッグもできず、無効なリンクとして伝わります。
- トグル。 トグルは状態を持つので、移動先は持てません。
toggleを付けている間、hrefは無視されます。 - Web のみ、
relとdownloadがアンカーに渡されます。targetをnewにすると、relには必ずnoopenerが加わります。 - 訪問済みの見た目はありません。リンクのボタンの色は、ほかのボタンと同じく、強調の度合いと状態を表します。
Web では、ボタンはフォームのコントロールの 1 つで、押したときにフォームへ何をするかを type で示します。ほかのプラットフォームにはフォームの要素がありません。そこでは、ボタンを押したときとフィールドの action の両方から、同じ関数を呼びます。
type |
押したとき |
|---|---|
button（既定） |
フォームには何もしません。フォームの中のボタンで、送信せずにピッカーを開いたり行を追加したりできます。 |
submit |
ブラウザー自身の送信ボタンと同じように、フォームに送信を求めます。先に click、次にフォームの検証、その後にフォームの submit イベントの順です。 |
reset |
click とフォームの reset イベントの後に、フォームのすべてのコントロールを初期値に戻します。 |
<form id="profile">
<tanrei-text-field label="名前" name="name" required></tanrei-text-field>
<tanrei-button type="reset" variant="text">クリア</tanrei-button>
<tanrei-button type="submit" variant="outlined" name="intent" value="draft">下書きを保存</tanrei-button>
<tanrei-button type="submit" name="intent" value="publish">公開</tanrei-button>
</form>
<!-- フォームの外では、form 属性でフォームを id で指定します。 -->
<tanrei-button type="submit" form="profile" name="intent" value="publish">公開</tanrei-button>
<script type="module">
import '@tanrei/web/components/button';
import '@tanrei/web/components/text-field';
document.querySelector('#profile').addEventListener('submit', (event) => {
event.preventDefault();
// 押されたボタンの name と value がデータに入ります。"draft" か "publish" です。
const data = new FormData(event.target, event.submitter);
save(data.get('name'), data.get('intent'));
});
</script>import { Button, TextField } from '@tanrei/react';
<form
id="profile"
onSubmit={(event) => {
event.preventDefault();
const data = new FormData(event.currentTarget, (event.nativeEvent as SubmitEvent).submitter);
save(data.get('name'), data.get('intent'));
}}
>
<TextField label="名前" name="name" required />
<Button type="reset" variant="text">クリア</Button>
<Button type="submit" variant="outlined" name="intent" value="draft">下書きを保存</Button>
<Button type="submit" name="intent" value="publish">公開</Button>
</form>
// フォームの外では、form にフォームの id を渡します。
<Button type="submit" form="profile" name="intent" value="publish">公開</Button>- どのフォームか。 ボタンを囲むフォーム、または
form属性が id で指定するフォームです。ダイアログのアクションやページヘッダーにあるボタンは、この属性で、自分を囲んでいないフォームを送信します。要素のformプロパティはそのフォームを返し、設定はできません。 - フィールドでの Enter。 フォームの最初の送信ボタンが、そのフォームの既定のボタンです。Tanrei のボタンでも、ブラウザー自身のボタンでも同じです。フォームのフィールドで Enter を押すと、このボタンが押されます。Tanrei のテキストフィールド、数値フィールド、カラーフィールド、コンボボックス、ワンタイムコード入力欄、検索、チェックボックス、ラジオボタン、スイッチと、ブラウザー自身の 1 行の入力欄が対象です。ボタンはほかの押し方と同じく
clickを発火し、そのclickをキャンセルすると送信もキャンセルされます。 - 無効。 無効な送信ボタンは何も送信しません。フォームの既定のボタンである間は Enter も止めるので、準備のできていないフォームがボタンを避けて送信されることはありません。
<fieldset disabled>の中のボタンは、typeにかかわらず一緒に無効になります。リンクのボタンは無効になりません。 - どのボタンが押されたか。
nameとvalueは、そのボタンがフォームを送信したときだけ送られます。submitのリスナーで、event.submitter.valueかnew FormData(form, event.submitter)から読み取ります。event.submitterは Tanrei の要素ではありません。submitイベントが配送される間、要素が自分の場所に置くネイティブの<button>です。そのため、event.submitterを要素と比較しないでください。 - フォームの送り方を決めるのはフォームだけです。
formaction、formmethod、formenctype、formtarget、formnovalidateは読み取りません。検証なしで下書きを保存するには、そのボタンのclickリスナーでフォームのnoValidateを設定します。clickは検証より先に実行されます。 - 二重の送信。 ボタンは 2 回目の押下を防ぎません。リクエストの処理中はボタンを無効にするか、2 回目の
submitを無視します。 - トグルとリンクは
typeを無視します。状態を切り替える押下や、どこかへ移動する押下は、フォームを送信しません。3 つのどれでもないtypeはbuttonとして動作します。
リストのすべての行にある「削除」のように、同じ言葉が複数のボタンに描かれていると、スクリーンリーダーの利用者には、その言葉だけではどの行のボタンかがわかりません。それぞれのボタンに label を指定します。label は、描かれたテキストに代わってボタンのアクセシブルネームの全体になり、ボタンの見た目は変わりません。
すべての行に同じ言葉があり、それぞれのボタンに行の名前を付けた例
label |
描かれるラベル | アクセシブルネーム |
|---|---|---|
| あり | なし（アイコンのみ） | label |
| 空 | あり | 描かれたテキスト |
| あり | あり | label の全体で、それだけ |
- 名前には、描かれたテキストを含めます。 音声入力を使う人は、ボタンに見えている言葉を口にします。プロダクトの言語で無理がなければ、名前をその言葉で始めます。「削除」と描かれたボタンなら「削除：Inter」のようにします。大文字と小文字の違いや余分な空白は問いません。
- デバッグビルドは、描かれたテキストを含まない
labelを報告します。その場合も、ボタンは指定された名前をそのまま使います。描かれたテキストに戻すことも、2 つをつなげることもありません。語句の順序は、プロダクトの言語が決めるものだからです。 - 説明は名前ではありません。 ボタンを隣のボタンと見分けさせるのは名前です。「新しいタブで開きます」のような、押したときに起きることは説明で、名前とロールの後に読み上げられます。
サイズと無効状態
状態
| variant | 有効 | 無効 | ホバー | フォーカス | 押下 |
|---|---|---|---|---|---|
| filled | filled, 有効 | filled, 無効 | filled, ホバー | filled, フォーカス | filled, 押下 |
| filled · toggle · selected | filled toggle selected, 有効 | filled toggle selected, 無効 | filled toggle selected, ホバー | filled toggle selected, フォーカス | filled toggle selected, 押下 |
| tonal | tonal, 有効 | tonal, 無効 | tonal, ホバー | tonal, フォーカス | tonal, 押下 |
| tonal · toggle · selected | tonal toggle selected, 有効 | tonal toggle selected, 無効 | tonal toggle selected, ホバー | tonal toggle selected, フォーカス | tonal toggle selected, 押下 |
| elevated | elevated, 有効 | elevated, 無効 | elevated, ホバー | elevated, フォーカス | elevated, 押下 |
| elevated · toggle · selected | elevated toggle selected, 有効 | elevated toggle selected, 無効 | elevated toggle selected, ホバー | elevated toggle selected, フォーカス | elevated toggle selected, 押下 |
| outlined | outlined, 有効 | outlined, 無効 | outlined, ホバー | outlined, フォーカス | outlined, 押下 |
| outlined · toggle · selected | outlined toggle selected, 有効 | outlined toggle selected, 無効 | outlined toggle selected, ホバー | outlined toggle selected, フォーカス | outlined toggle selected, 押下 |
| text | text, 有効 | text, 無効 | text, ホバー | text, フォーカス | text, 押下 |
| text · toggle · selected | text toggle selected, 有効 | text toggle selected, 無効 | text toggle selected, ホバー | text toggle selected, フォーカス | text toggle selected, 押下 |
loading。構成要素
構成要素
filled-leading-icon の上に描いています。寸法
寸法
| 長さ | トークン | 値（px） |
|---|---|---|
container padding-inline-start-with-icon | tanrei.comp.button.container.padding-inline-start-with-icon.medium | 12 |
container gap | tanrei.comp.button.container.gap.medium | 8 |
container padding-inline-end | tanrei.comp.button.container.padding-inline-end.medium | 16 |
container height | tanrei.comp.button.container.height.medium | 40 |
icon size | tanrei.comp.button.icon.size.medium | 24 |
filled-leading-icon の上に描いています。プロパティ
| プロパティ | 型 | 既定値 | 説明 |
|---|---|---|---|
variant | filled | tonal | elevated | outlined | text | "filled" | Emphasis level; whether the action deletes or discards something is destructive, which every variant takes. Use one filled button per view for the main action; an icon-only text button is the quiet icon action of a toolbar or a row. A design system may add values. Default filled; a Button placed as a dialog's or a side sheet's action without a variant takes that host's (DLG-20, SSH-17), and a side sheet's close button takes comp.side-sheet.close-button.variant (SSH-5). |
destructive | boolean | false | Marks an action that deletes or discards something a person may not get back (Delete, Discard, Remove member): the button keeps its variant's emphasis and takes the error role's color in it — filled in the error color, tonal in its tonal container, and the error color for the label of an elevated, outlined or text button and the edge of an outlined one (BTN-40). Use it for that kind of action alone, never for emphasis. It adds a color, not a meaning: the label still says what the button does (BTN-42). A toggle has no destructive look: ignored while toggle is true (BTN-41). A link deletes nothing: ignored while href is not empty (BTN-43). |
size | small | medium | large | "medium" | Visual height (32 / 40 / 56), which is also an icon-only button's width at its default width. The hit area always meets the minimum target. A design system may add values. |
width | default | narrow | wide | "default" | How wide an icon-only button is. default: as wide as it is high (32 / 40 / 56). narrow: its glyph with a small inset on each side (28 / 32 / 32), for a tight row of icon actions. wide: 40 / 52 / 72, for the one action of a row that should weigh more. Ignored when the button has a label, and while fullWidth is true. The hit area meets the minimum target at every width. |
fullWidth | boolean | false | Makes the button take the whole width its container gives it, its content centred, at the height of its size (BTN-39): a form's only action on a narrow screen, the action at the foot of a card or a sheet. Ignored while a host lays the button out (a button group, a toolbar, or the actions of a dialog, a side sheet, a popover, a callout or an empty state), which gives it a width of its own (a button group's fullWidth for a row of them). |
iconPosition | leading | trailing | "leading" | Which side of the label the icon sits on, in the reading direction. Ignored when the button has no label or no icon. |
toggle | boolean | false | Makes the button a two-state control: activation switches selected, and assistive technology announces it as pressed or not pressed. A toggle takes no destination: href is ignored while toggle is true. |
selected | boolean | false | Whether a toggle is on. Ignored unless toggle is true. |
disabled | boolean | false | Prevents interaction and removes the button from the focus order — unless focusableWhenDisabled keeps it there (BTN-38). A disabled button with a destination is not a link that can be followed (BTN-25); on the web a disabled submit button sends nothing, and still stops Enter from sending its form where it is the form's default button (BTN-32). |
focusableWhenDisabled | boolean | false | Keeps a disabled button in the focus order: it is drawn and exposed as disabled and refuses every activation, but a keyboard and a screen reader can still reach it, so that a person can learn why it does nothing (a tooltip, a description). For an action a person can make available — a send button while the message is empty. Ignored unless disabled is true (BTN-38). |
busy | boolean | false | The action it started is under way: the button keeps its focus, its place in the focus order and its size, draws the loading indicator's arc in place of its label and icon, refuses every activation, and tells assistive technology through busyLabel (BTN-36, BTN-37). For a save or a send that takes a moment; it is not disabled, so focus stays where the person left it. |
busyLabel | string | "" | What assistive technology is told while the button is busy ("Saving"): announced once when it becomes busy and read after its name while it is. Tanrei ships no words of its own. Required while busy is true; ignored otherwise. |
href | string | "" | The destination: an address as the platform's links take one (a URL; on the web a path or a fragment as well). Not empty, it makes the button a link and not a button: the link role, activated by pointer, touch or Enter and not by Space, opened by the platform as its own links are, and drawn exactly as the button it would otherwise be (BTN-22, BTN-23). Ignored while toggle is true: a control that holds a state is not a destination (BTN-26). |
target | same | new | "same" | Where the destination opens. same: where the person is — the same tab on the web, the app's own handling of the address elsewhere. new: a new context — a new tab or window on the web, outside the current screen elsewhere — which a labelled button marks with the glyph open_in_new after its label and says through targetLabel (BTN-24). Ignored without href. |
targetLabel | string | "" | What assistive technology reads after the link's name while target is new ("opens in a new tab"). Tanrei ships no words of its own, so the product gives them in its own language, as it gives a chip its removeLabel. Required while target is new; ignored otherwise. |
label | string | "" | The accessible name, where it is more than what the button draws. Required for an icon-only button: an icon alone is not a name. Optional for a button that draws a label: left empty, the drawn text is the name; given, it is the whole name in place of the drawn text, which stays drawn — for an action repeated in every row (drawn "Reset", named "Reset: Spacing") — and it must contain the drawn text, so that a person who says what they see is heard (BTN-16). It is about this one button, so it is the instance's alone and reads no word of the product's. |
スロット
| スロット | 説明 |
|---|---|
default | Label content: the text that names the action. Leave it empty for an icon-only button. |
icon | The icon: a glyph of the system's icon set, drawn through the platform's icon helper. With a label it sits at the side iconPosition names; without one it is the button's only content. |
イベント
| イベント | 説明 |
|---|---|
click | The button was activated by pointer, touch, keyboard or assistive technology. A link button emits it before its destination opens; a product that takes the navigation itself (a client-side router) cancels it (BTN-23). |
change | A toggle was activated; carries the new value of selected. |
状態
振る舞い
EARS 記法による要件です。各プラットフォームの実装は、この ID に対応するテストで検証されます。要件の原文は仕様ファイルのものをそのまま掲載しています。
| ID | 要件 |
|---|---|
BTN-1 | WHEN the user activates the button by pointer, touch, Enter or Space — a link button (BTN-22) by pointer, touch or Enter — THE button SHALL emit click exactly once. |
BTN-2 | WHILE disabled is true THE button SHALL NOT emit click or change, SHALL NOT be focusable and SHALL expose the disabled state to assistive technology. |
BTN-3 | WHILE hovered, keyboard-focused or pressed THE button SHALL render its container, label, icon, outline, elevation and opacity from the component tokens of the highest-precedence active state, with precedence pressed over focused over hovered; focus gained by pointer or touch SHALL NOT select the focused state. |
BTN-4 | WHEN the button receives keyboard focus THE button SHALL show the focus ring without animation; focus gained by pointer or touch SHALL NOT show it. |
BTN-5 | WHERE the visual size is below the minimum target THE button SHALL extend its hit area on both axes to sys.target.touch for touch input and sys.target.pointer for fine pointers, without changing its visual size; a platform that cannot tell the input type SHALL use sys.target.touch. |
BTN-6 | WHILE disabled is true THE button SHALL render its container, label, icon, outline, elevation and opacity from the disabled component tokens of its variant and, for a toggle, of its selection, and, while destructive is true, of its destructive parts (BTN-40). |
BTN-7 | WHEN variant or size names a value that the active design system does not have THE button SHALL render with the default value's tokens, and in debug builds report the unknown value. |
BTN-8 | WHEN the button is pressed by pointer, touch, Enter or Space THE button SHALL show the pressed state without delay and SHALL keep it visible for at least sys.motion.duration.press-hold, even when the press ends sooner. |
BTN-9 | WHILE pressed THE button SHALL answer as sys.behavior.pressed-feedback names: overlay applies the pressed tokens to the whole container at once; ripple grows the pressed state layer from the point of contact (from the center for keyboard activation); dim applies the pressed opacity to the whole control and draws no state layer; none draws no answer to the press. Under ripple and dim only the container color stays with the state under the press; label, icon, outline, elevation, opacity and shape still come from the pressed tokens. Under none every part stays with the state under the press. The ripple grows over comp.button.motion.feedback-duration with motion.state-easing, fades over the motion.state-duration of its size with motion.state-easing once the press has ended and press-hold has passed, and appears whole where motion is reduced. |
BTN-10 | THE button SHALL ease its container corners by sys.shape.corner-smoothing (0 is a quarter circle, 0.6 the iOS continuous corner; a platform with only the OS curve draws it for any amount above 0) and show its keyboard focus as sys.behavior.focus-style names (ring or glow); a platform that cannot draw a choice SHALL fall back to the first value and state that in its README. WHILE the button is an item of a connected button group THE button SHALL draw its corners and minimum width and height as the group sets them, the padding the group adds at a rounded outer end, and neither outline nor elevation ring along an edge the group joins to a neighbour under a divider, and, from a dialog, a side sheet or an image preview, its variant while none is set (DLG-20, SSH-17, IMP-8) and a host's close-button variant — the popover's, the side sheet's, the bottom sheet's, the callout's and the snackbar's close button, each an icon-only Button of the small size (POP-13, SSH-5, BSH-29, CLO-10, SNK-34; the image preview's bar names one variant for its close and zoom controls, IMP-8), and, from any component that draws it on a colored surface of its own, a tone (BTN-45), through an internal channel that is not part of its public surface (BGR-2, BGR-3, BGR-16, BGR-22, BGR-23). |
BTN-11 | WHILE the button has both a label and an icon THE button SHALL draw the icon at the side iconPosition names in the reading direction (leading at the start, trailing at the end, both mirrored in right-to-left layouts) and the label comp.button.container.gap.medium from it at the medium size (and the gap of its own size otherwise), with comp.button.container.padding-inline-start-with-icon.medium on the icon's side for a leading icon and comp.button.container.padding-inline-end-with-icon.medium for a trailing one, and the plain padding (comp.button.container.padding-inline-start.medium, comp.button.container.padding-inline-end.medium) on the other side, each of its own size; WHILE it has a label and no icon it SHALL use the plain padding on both sides and ignore iconPosition. |
BTN-12 | WHILE the button has an icon and no label THE button SHALL draw its container at the height of its size — comp.button.container.height.medium at the medium size, and the height of its own size otherwise — and at the width its width names: as wide as it is high WHILE width is default, as wide as its glyph's box (comp.button.icon.size-without-label.medium) with comp.button.container.padding-inline-narrow.medium on each side of it WHILE width is narrow, and comp.button.container.width-wide.medium wide WHILE width is wide (each of its own size), with the glyph centred, and SHALL round it by comp.button.container.shape, capped at half its shorter side, so that the default system's sys.shape.corner.full draws a circle at the default width and a capsule at the other two, and a smaller corner a rounded square or rectangle. The narrow width SHALL be the glyph and that inset twice, and nothing more: the button has no narrow width of its own to disagree with them, so a narrow button follows its glyph wherever a design system re-sizes it, and its container, state layer, ripple and outline are a capsule of that width. In the default system the inset is sys.space.space50 at every size, the least room that keeps the glyph clear of the capsule's edge; a design system that wants its narrow buttons to differ more by size gives a size a larger inset. It SHALL NOT draw an icon-only button at any other width, except to the minimum width a connected button group sets and the padding that group adds at an outer end (BTN-10). WHERE text size scales the glyph (every size follows the root font size on the web) the container SHALL grow with it and keep the proportion of its width to its height. |
BTN-13 | THE button SHALL draw its icon at the icon box of its size — comp.button.icon.size.medium beside a label and comp.button.icon.size-without-label.medium alone at the medium size, and so on — with the family and fill of its selection (sys.icon.family.selected and sys.icon.fill.selected only when toggle and selected are both true; otherwise sys.icon.family.unselected and sys.icon.fill.unselected), sys.icon.weight, and an optical size clamped between sys.icon.optical-size.min and sys.icon.optical-size.max; beside a label the icon SHALL take the label color of the button's look, and alone the icon color of its look (comp.button.text.icon.color for a plain text button, comp.button.text.selected.icon.color for a text toggle that is on, and so on). |
BTN-14 | WHEN toggle is true and the user activates the button THE button SHALL emit click and then change with the opposite of selected, in that order (as a native checkbox does, and as CHP-11 says for a filter chip), and SHALL expose selected to assistive technology as pressed or not pressed; WHILE toggle is false THE button SHALL NOT expose a pressed state. |
BTN-15 | WHILE toggle is true THE button SHALL render its container, label, icon and outline from the selected parts of its variant when selected is true (comp.button.filled.selected.container.color, and so on) and from the unselected parts when it is false (comp.button.filled.unselected.container.color, and so on), and its elevation from its variant's own comp.button.filled.container.elevation (and so on); WHILE toggle is false it SHALL render from the variant's own parts. |
BTN-16 | WHILE the label prop is not empty THE button SHALL expose it as its accessible name, whole and alone, whether or not it draws a label; WHILE the label prop is empty and the button draws a label THE button SHALL expose the drawn label's text as its accessible name; WHILE the label prop is empty and the product gives the button a name of its own on the element — aria-label, or aria-labelledby naming an element — THE button SHALL expose that name as its accessible name, over the drawn label's text where it draws one, because the platform's text alternative computation puts an author's name over the element's content; WHILE the label prop is not empty THE label prop SHALL be the name, over the product's. WHILE it has an icon and no drawn label THE button SHALL keep the glyph from assistive technology, and WHILE the label prop is empty as well and the product gives it no name of its own SHALL still render, and in debug builds report that it has no accessible name. WHILE the button draws a label and the label prop is not empty THE button SHALL draw the label exactly as it would without the prop, SHALL NOT expose the drawn text a second time beside the name, and in debug builds SHALL report a label prop that does not contain the drawn text — the two compared with white space at their ends dropped, runs of white space read as one space and letters compared without case — because a person who speaks the words they see must be heard by the control that shows them. That report SHALL be all the button does about it: it SHALL still expose the label prop, whole and alone, as the name, SHALL NOT fall back to the drawn text and SHALL NOT add the drawn text to the name, in a debug build as in any other. THE button SHALL NOT make a name of the two itself, by joining them or in any other way: the order of a phrase is the language's, and the whole name is the product's to give. A description — the platform's own, or targetLabel (BTN-24) — SHALL be read after the name and the role and SHALL NOT be exposed as a name or as part of one. |
BTN-17 | IF the button has neither a label nor an icon THE button SHALL still render its container at the height of its size and as wide as it is high, and in debug builds report that it has no content. |
BTN-18 | THE button SHALL take its layout direction from where it is used — the direction of the nearest ancestor that sets one, and the platform's own where none does — and SHALL have no direction setting of its own; WHEN that direction changes while the button is shown THE button SHALL draw itself for the new direction at once, without a motion of its own, keeping its selection and its focus. |
BTN-19 | WHERE the layout direction is right-to-left THE button SHALL draw the glyph of its icon slot mirrored left to right exactly when the system's icon set marks that glyph's name as mirrored or the product forces mirroring for that use, and unmirrored when the product forbids it: the icon helper mirrors the glyph inside its own box, about the box's vertical centre line, changing neither its place, size, color and fill nor the order BTN-11 gives. THE button SHALL NOT mirror a glyph itself, and SHALL NOT mirror content the product gives as an image or a view of its own rather than by a glyph's name. |
BTN-20 | THE button SHALL lay out its label as text of its own direction, isolated from the text around it: each takes the base direction of its first strong character, or the layout direction where it has none, so that a left-to-right word, a number with its sign or unit, a telephone number and an address keep their own order in a right-to-left layout and reorder nothing beside them; THE button SHALL still place the label and align its lines by the layout direction, not by the text's own. |
BTN-21 | WHILE the button has a label THE button SHALL ignore width: a labelled button is as wide as its content and its paddings (BTN-11). WHEN width names a value the button does not define THE button SHALL render at the default width, and in debug builds report the unknown value. THE button SHALL meet the minimum target of BTN-5 at every width by extending its hit area: a narrow button SHALL NOT be drawn wider to reach it. |
BTN-22 | WHILE href is not empty and toggle is false THE button SHALL be a link and not a button: it SHALL expose the link role, named as BTN-16 names a button, with no pressed state; SHALL be the platform's own link to href (the web's anchor element; SwiftUI's Link; on Compose, Flutter and React Native an element with the platform's link semantics whose address is opened by the platform's opener), so that whatever the platform gives a link — on the web its context menu, opening in a new tab or window, copying and dragging its address, and the address shown before it is followed — is the platform's, and not the button's to draw or to take over; and SHALL draw its container, label, icon, outline, elevation and opacity in every state from the same tokens as a button of its variant, size and width that has no destination, with no look of its own for a link and none for a destination already visited. |
BTN-23 | WHEN the user activates a link button by pointer, touch or Enter THE button SHALL emit click exactly once and then open href where target names, unless the product cancelled that click, in which case it SHALL open nothing: the product's own router has taken the navigation. It SHALL show the pressed state as BTN-8 and BTN-9 say and SHALL NOT hold the navigation back for sys.motion.duration.press-hold. THE button SHALL NOT activate a link button on Space, which on the web scrolls the page as it does on any link, and SHALL NOT show the pressed state for it; WHERE the platform gives its links other keys or gestures (on the web a modified or a middle click that opens a new tab, on Apple platforms a long press that previews) THE button SHALL leave them to the platform. |
BTN-24 | WHILE the button is a link and target is new THE button SHALL open href in a new context — on the web a new tab or window that is given no handle to the page that opened it; on the other platforms outside the screen the person is on, as the platform's opener decides — and, WHILE it has a label and no icon at its trailing side, SHALL draw the glyph open_in_new of the system's icon set after the label as BTN-11 draws a trailing icon: comp.button.container.gap.medium from the label, at comp.button.icon.size.medium, with comp.button.container.padding-inline-end-with-icon.medium between it and the end edge at the medium size (and each of its own size otherwise), a leading icon keeping its own side as BTN-11 says; in the label color of its look and state; through the icon helper, which mirrors it in a right-to-left layout because the icon set marks its name; and hidden from assistive technology. WHILE the button holds the product's own icon at its trailing side, or has no label, THE button SHALL draw no mark of its own: the product has chosen what that place shows. Whether a mark is drawn or not THE button SHALL expose targetLabel as its description, read after its name and role, and WHILE targetLabel is empty SHALL still render and in debug builds report that a link that opens a new context does not say so. WHILE target is same THE button SHALL draw no mark and SHALL ignore targetLabel. |
BTN-25 | WHILE href is not empty and disabled is true THE button SHALL NOT be a link that can be followed: it SHALL render as BTN-6 says, the mark of BTN-24 in the disabled label color, SHALL expose the link role with the disabled state and no destination, SHALL NOT be focusable, SHALL NOT emit click, and SHALL open nothing by any means the platform gives a link (on the web the anchor carries no href, so there is no context menu entry, no drag and no new tab for it). |
BTN-26 | WHILE toggle is true THE button SHALL ignore href, target and targetLabel and stay the toggle BTN-14 describes, and in debug builds SHALL report that a toggle cannot be a link: a control that holds a state is not a destination. WHEN target names a value the button does not define THE button SHALL behave as same, and in debug builds report the unknown value. IF href is only white space, or names a script to run rather than a place to go (the web's javascript: scheme), or cannot be read as an address by the platform, THE button SHALL be a button without a destination, and in the last two cases report it in debug builds. |
BTN-27 | WHERE the platform has a form element (the web) and WHILE type is submit, WHEN the user activates the button by any means of BTN-1 and the product has not cancelled its click THE button SHALL ask its form (BTN-29) to submit as the platform's own submit button does: after click has been emitted, exactly once for one activation, with the form's own validation run first and its failure shown by the platform and by the fields as they show it, then the form's submit event, which the product may cancel, and with the pressed button named in what is sent (BTN-31). It SHALL show the pressed state as BTN-8 and BTN-9 say and SHALL NOT hold the submission back for sys.motion.duration.press-hold. WHILE type is button, which is the default, THE button SHALL do nothing to any form, whatever it stands in. |
BTN-28 | WHERE the platform has a form element (the web) and WHILE type is reset, WHEN the user activates the button and the product has not cancelled its click THE button SHALL ask its form (BTN-29) to reset as the platform's own reset button does: after click has been emitted, the form's reset event, which the product may cancel, and then every control of the form back at its initial value; it SHALL validate nothing, submit nothing and add nothing to any later submission. |
BTN-29 | THE button's form SHALL be the one the platform gives a control at its place: the nearest form among its ancestors, or, WHILE the web's form attribute is not empty, the form of that id in the same document, and then not an ancestor; it SHALL be read when the button is activated, so that a button moved into a form, or a form attribute written later, is followed. WHERE the platform lists a form's controls (the web's form.elements) THE button SHALL be listed among them at its place in document order, whatever its type and also WHILE type is button — a link button too, since the element is one kind of control — and being listed SHALL send nothing: a Button adds to a submission only what BTN-31 says. IF type is submit or reset and the button has no form WHEN it is activated THE button SHALL emit click and do nothing more, and in debug builds report that a submit or a reset button has no form. |
BTN-30 | WHERE the platform has a form element (the web) THE default button of a form SHALL be the first submit button among the form's controls in document order, a Button whose type is submit counted exactly as the platform's own submit button is. WHEN the person presses Enter in a field of the form that submits it implicitly — the platform's own single-line inputs; Tanrei's text field (TXI-3), number field (NMI-20), color field (CLI-19), combobox (CMB-28), one-time-code input (OTC-13) and search (SRC-13), once their own event for that key has not been cancelled; and Tanrei's checkbox, radio button and switch, which emit nothing for the key (CHK-1, RAD-1, SWT-1) — and the default button is a Button, THE button SHALL act as if it had been activated: click emitted exactly once, and then, unless the product cancelled it, the submission of BTN-27 with that button named in it (BTN-31); it SHALL NOT show the pressed state for a key pressed elsewhere and SHALL NOT take focus. WHILE the default button is disabled — a Button or the platform's own — THE form SHALL NOT be submitted by Enter in any of those controls, as the platform's own disabled default button prevents it from the platform's own inputs. WHILE the default button is the platform's own, Enter in a Tanrei control SHALL press it as Enter in the platform's own input does: its click, then the submission with its name and value. WHILE the form has no submit button of either kind THE button has no part in it: the field and the platform do as they do without one. THE button SHALL draw a form's default button no differently from any other: its emphasis is its variant's. |
BTN-31 | WHEN a Button submits its form (BTN-27, BTN-30) THE submission SHALL carry the pair of that button's name and value — once, at most, and only WHILE its name is not empty; an empty value is sent as an empty value — and SHALL carry nothing of any other Button; WHEN the form is submitted by other means (another button, a script's own request) it SHALL carry nothing of this one. THE submit event SHALL name as its submitter a submit button of the platform's own that holds the same name and value and lasts no longer than the event's dispatch, because the platform lets only its own buttons be a submitter: a product reads which button was pressed from that name and value, or from click, and SHALL NOT expect the submitter to be the Tanrei element. THE button SHALL NOT override where or how its form is sent: the address, the method, the encoding, the target and whether the form is validated are the form's alone. |
BTN-32 | WHILE disabled is true THE button SHALL submit and reset nothing by any means — a press, a key, assistive technology or a script's click — SHALL add nothing to a submission, and SHALL still be counted as its form's default button where it is the first submit button (BTN-30), so that a form whose button is disabled is not sent by Enter behind it. WHERE the platform has a form element (the web), WHILE the button is not a link and stands in a group of controls the page has disabled as a whole (a disabled fieldset) THE button SHALL be disabled exactly as BTN-2 and BTN-6 say, whatever its type, and SHALL be enabled again at once when the group is; a link button SHALL NOT be disabled by it, as no link of the platform is. |
BTN-33 | WHILE toggle is true THE button SHALL ignore a type of submit or reset and stay the toggle BTN-14 describes, and in debug builds SHALL report that a toggle cannot submit or reset a form: a press that switches a state is not one that sends it. WHILE the button is a link (BTN-22) THE button SHALL ignore a type of submit or reset and stay the link, and in debug builds SHALL report that a link cannot submit or reset a form: it goes somewhere, and what a form sends on the way is the form's own action. WHEN type names a value the button does not define THE button SHALL behave as button and submit nothing — where the platform's own button would submit for an unknown type — and in debug builds report the unknown value. WHILE type is button THE button SHALL ignore the web's form, name and value without a report: they do no harm on a button that sends nothing. |
BTN-34 | WHERE the platform has no form element (SwiftUI, Compose, Flutter, React Native) THE button SHALL have no type, no form and no name and value to send: there a product calls one function of its own from the button's click and from a field's action (TXI-3), and nothing of Tanrei's joins the two or decides which button a key in a field presses. |
BTN-36 | WHILE busy is true THE button SHALL draw its container, outline, elevation and opacity from its enabled tokens (of its variant and, for a toggle, of its selection, or of its destructive parts, BTN-40), SHALL keep its label and icon in place without drawing them so that its width and height do not change, and SHALL draw at the centre of the container the loading indicator's arc (LDG-1; under reduced motion LDG-4's whole circle, its opacity easing once per cycle) in a box of the button's icon size (icon.size-without-label where it is icon-only), comp.button.busy.indicator.thickness thick, in the label color of its variant (the icon color where it is icon-only), turning once per comp.button.motion.busy-cycle-duration. It SHALL show neither the hovered nor the pressed state, and SHALL show the focused one. WHEN busy becomes false THE button SHALL draw its label and icon again at once, without a motion. |
BTN-37 | WHILE busy is true THE button SHALL keep its focus and its place in the focus order, SHALL NOT emit click or change, and SHALL submit, reset and open nothing by any means (a press, a key, assistive technology or a script's click); where it is its form's default button it SHALL stop Enter in a field of the form from submitting it, as a disabled default button does (BTN-30, BTN-32), so that a form is not sent twice. It SHALL expose to assistive technology that it cannot be activated now (on the web aria-disabled) and busyLabel as its description, read after its name, and WHEN busy becomes true SHALL have busyLabel announced once, politely, without moving focus; nothing SHALL be announced when it ends, because what the action did is the product's to say. WHILE busy is true and busyLabel is empty THE button SHALL still render and in debug builds report that a busy button does not say so. |
BTN-38 | WHILE disabled is true and focusableWhenDisabled is true THE button SHALL be drawn as BTN-6 says and refuse every activation as BTN-2, BTN-25 and BTN-32 say, but SHALL stay in the focus order, take focus from the keyboard and from a pointer, keep focus when it becomes disabled, show its focus indicator, and expose the disabled state to assistive technology while staying focusable (on the web aria-disabled, not the platform's disabled state), so that a person can reach it and learn why it does nothing. It SHALL show neither the hovered nor the pressed state. A link button so disabled is the disabled link of BTN-25, reachable by Tab. WHERE the platform disables a group of controls as a whole (a disabled fieldset on the web) THE button SHALL leave the focus order with the group, whatever focusableWhenDisabled says, as the platform's own controls do. WHILE focusableWhenDisabled is false, disabled keeps its meaning (BTN-2). |
BTN-39 | WHILE fullWidth is true and no host lays the button out THE button SHALL take the whole inline size its container gives it, and SHALL keep the height, the paddings, the corners, the outline and the minimum target of its size, variant and state, centring its content in that width — the label and the icon as one row, in the order and at the gap BTN-11 gives them, or an icon-only button's glyph, whatever width says. WHERE that width is narrower than the label THE button SHALL wrap the label, its lines centred, rather than truncate it or draw past its container. WHILE a host lays the button out (a button group, a toolbar, or the actions of a dialog, a side sheet, a popover, a callout or an empty state) THE button SHALL take the width that host gives it and ignore fullWidth: the host's own full width (BGR-17) is how a row of buttons shares one width. |
BTN-40 | WHILE destructive is true and toggle is false THE button SHALL render its container, label, icon and outline from the destructive parts of its variant (comp.button.filled.destructive.container.color, and so on for each variant), in each state from the destructive parts of that state, and its elevation, shape and opacity as it would without destructive; WHILE destructive is false it SHALL render from the variant's own parts. In every shipped system the destructive parts are the error color role at the variant's emphasis — filled: the error color with the on-error color on it; tonal: the error container with the on-error-container color on it; elevated, outlined and text: the variant's own container with the label and the icon in the error color, and an outlined button's edge in it too — and disabled they are those of the variant's plain disabled look, so that a disabled destructive button looks like any disabled button of its variant. An icon-only button takes destructive as a labelled button does; a link button ignores it (BTN-43). |
BTN-41 | WHILE toggle is true THE button SHALL ignore destructive and render as BTN-15 says, and in debug builds SHALL report that a toggle has no destructive look: a control that switches a state on and off does not delete anything by being pressed. |
BTN-42 | THE button SHALL NOT make color the only sign that its action is destructive: WHILE destructive is true it SHALL keep its role, its accessible name, its states and its keyboard behaviour exactly as they are without it, and SHALL expose nothing more to assistive technology on the web, where no role or state says it; WHERE the platform has a destructive role of its own (SwiftUI's ButtonRole.destructive) THE button SHALL be given that role. Its label, or its label prop on an icon-only button, says what it destroys. |
BTN-43 | WHILE the button is a link (BTN-22) THE button SHALL ignore destructive and render as the link button of its variant without it, in each state and on a tone a host gives it (BTN-45), and in debug builds SHALL report that a link only leads somewhere and does not itself delete anything: the action that deletes is the one at its destination, and that action carries destructive. |
BTN-45 | WHERE the component that places the button gives it a tone through the internal channel (BTN-10) — the content color of the colored surface it draws the button on (a status callout's, an inverse or status snackbar's), and optionally the color a focus indicator's outer stroke takes on that surface — THE button SHALL draw its plain look in that tone instead of its variant's own colors, at rest and in each state: its label, its icon and its state layer in the tone's color; its container, where its variant draws one at rest (filled, tonal, elevated, and a variant a layer adds), in the tone's color at comp.button.tone.container.opacity, and where its variant draws none (outlined, text) as its variant's own, an outlined button's edge taking the tone's color at that opacity instead; hovered, focused and pressed, that resting container with the tone's color laid over it at the system's state-layer opacity of the state (sys.state.hover-state-layer-opacity, sys.state.focus-state-layer-opacity, sys.state.pressed-state-layer-opacity), as the core rules lay a state over a resting color; disabled, the container (where its variant draws one) in the tone's color at sys.state.disabled-container-opacity and the label and icon at sys.state.disabled-content-opacity; and the outer stroke of its focus indicator in the tone's focus color, or its color where none is given. Its size, shape, paddings, elevation, opacity and answer to a press SHALL be its own, and a toggle and a destructive button SHALL keep their own looks (BTN-15, BTN-40). WHILE no tone is given THE button SHALL be drawn as without this clause. A tone is not part of the button's public surface: no prop, attribute or styling property gives one. |
BTN-46 | WHERE the platform has ARIA attributes (the web), WHEN the product sets an aria- attribute on the host, by the attribute or by the ARIA property that reflects it, THE button SHALL move it to the data-aria- attribute of the same name, so that the host is no second node with its name, description or state, and SHALL expose it on the element that carries its role — an id reference by the elements it names in the host's tree or a tree around it, an error message as part of the description while the button is invalid — except those the button owns (aria-pressed, aria-disabled), which it SHALL move and not expose. WHEN the product removes the aria- attribute or its data-aria- twin, or sets the ARIA property that reflects it (ariaLabel, ariaDescribedByElements…) to null, THE button SHALL take it off that element. WHEN the product sets an aria- attribute the button owns THE button SHALL report it in debug builds. |
プラットフォーム別の名前対応
パリティは API が同一であることを意味しません。同じ契約を、各プラットフォームの流儀で表現します。
| 仕様 | Web | SwiftUI | Jetpack Compose | Flutter | React Native |
|---|---|---|---|---|---|
| コンポーネント | tanrei-button | TanreiButton | TanreiButton | TanreiButton | Button |
variant · プロパティ | variant | variant | variant | variant | variant |
destructive · プロパティ | destructive | role | destructive | isDestructiveAction | destructive |
size · プロパティ | size | size | size | size | size |
width · プロパティ | width | width | width | width | width |
fullWidth · プロパティ | fullWidth | fullWidth | fullWidth | fullWidth | fullWidth |
iconPosition · プロパティ | iconPosition | iconPosition | iconPosition | iconAlignment | iconPosition |
toggle · プロパティ | toggle | isSelected | onCheckedChange | isSelected | toggle |
selected · プロパティ | selected | isSelected | checked | isSelected | selected |
disabled · プロパティ | disabled | disabled | enabled | onPressed | disabled |
focusableWhenDisabled · プロパティ | focusableWhenDisabled | focusableWhenDisabled | focusableWhenDisabled | focusableWhenDisabled | focusableWhenDisabled |
busy · プロパティ | busy | busy | busy | busy | busy |
busyLabel · プロパティ | busyLabel | busyLabel | busyLabel | busySemanticLabel | busyLabel |
href · プロパティ | href | destination | href | href | href |
target · プロパティ | target | target | target | target | target |
targetLabel · プロパティ | targetLabel | targetLabel | targetLabel | targetSemanticLabel | targetLabel |
label · プロパティ | label | label | contentDescription | semanticLabel | accessibilityLabel |
click · イベント | click | action | onClick | onPressed | onPress |
change · イベント | change | isSelected | onCheckedChange | onPressed | onSelectedChange |
| 備考 | The label is the default slot and the icon the icon slot (a glyph of the icon font); an icon-only button is one whose default slot is empty. iconPosition is reflected as the icon-position attribute. label sets aria-label on the inner <button> (or the anchor) whenever it is not empty; with a label in the default slot the slot's text stays drawn and the attribute replaces it as the name (BTN-16), and a debug build compares the two. A toggle sets aria-pressed on the inner <button>, switches its own selected and fires change, as a native checkbox does. width is the width attribute (default, narrow, wide); it does nothing while the default slot holds a label. With href the shadow root holds an <a part="container"> in place of the <button>, with the same classes, parts and listeners. The link form: href is the href attribute; target is the target attribute with the values same and new (the HTML spellings _self and _blank are read as those two; anything else is same and reported); targetLabel is the target-label attribute. Web-only, forwarded to the anchor and to nothing else: rel (to which new adds noopener) and download. Cancelling click (preventDefault()) cancels the navigation, which is how a client-side router takes it; a modified or a middle click is the browser's. A disabled link is the anchor without href, with role="link" and aria-disabled="true", as the navigation drawer's destination already is. Space is not handed to the press controller. element.click() follows the link. In a form: a form-associated custom element (static formAssociated = true), as the text field is, for its form owner and for a disabled fieldset (formDisabledCallback through the shared primitive; not while it is a link). Web attributes, not spec props, as a checkbox's name and value are: type (button, submit, reset; default button, reflected; anything else is button and reported), form (the id of a form, the platform's own attribute for a form-associated element), name and value. The element has a read-only form property. A press of a submit button, after its click has gone through the page uncancelled, appends a hidden native <button type="submit"> with the same name and value to itself — a child in a slot it does not have, so it is drawn nowhere, naming the same form where the button names one by its form attribute — calls form.requestSubmit() with it and removes it before returning, so the form's validation, its submit event, event.submitter and new FormData(form, event.submitter) are the platform's, and the pair is sent at the button's own place among the form's entries, as the platform's own button's is; a reset button calls form.reset(). The form's default button is found by one primitive that walks form.elements in order and takes the first native submit button or <tanrei-button type="submit">: the text field, the number field, the color field, the combobox, the one-time-code input and the search call it in place of form.requestSubmit() after their action (or submit) event, and the selection primitive of the checkbox, the radio button and the switch calls it for Enter, and for Enter in a control of the platform's own, which knows only the platform's buttons, the browser itself is left to decide: one keydown listener per tree, in the capture phase (on the window for a document, on the shadow root for a form inside one), added while a form of that tree holds a Tanrei submit button, answers Enter going down in a native control of such a form — inside it, or naming it by the form attribute from outside — whose default button is Tanrei's by appending to that button, for the length of the key, a hidden native <button type="submit"> in a slot the button does not have: the form's first submit button exactly when the Tanrei button is, disabled while it is, and never the default button to the primitive. The browser presses it exactly where, when and whether it would press a default button of its own — after the field has committed what was typed (change, then click, then submit), for the controls and the modifier keys this engine submits on and no others, never for the Enter an input method or a suggestion list took, and not at all while it is disabled, in a form of one field too. That press is stopped at the window before a listener of the page hears it (at the shadow root, for a form in a closed one) and its own submission cancelled; the hidden button is removed, and the Tanrei button's click() is called, which emits its click and submits as any press of it does. A hidden button the browser did not press is removed at the key's keyup, and one is appended again for each repeat of a key held down. A capture listener a page added to the window before the form's first Tanrei submit button was connected hears the stopped press, as a click on a hidden button inside the Tanrei button. formaction, formmethod, formenctype, formtarget and formnovalidate are not read. The inner <button> stays type="button": it is in a shadow root, where no form can own it. focusableWhenDisabled is the focusable-when-disabled attribute and busyLabel the busy-label attribute. A disabled button that is focusable-when-disabled renders its native <button> without the disabled attribute and with aria-disabled="true", and refuses the press in a listener of its own; the host's disabled attribute is written as for any disabled button, and a disabled fieldset still takes it out of the focus order (BTN-38). A busy button renders aria-disabled="true" on its native <button> (or anchor), keeps its label and icon laid out under visibility: hidden, draws the arc as an inline SVG circle, and announces busy-label through a visually hidden role="status" region emptied and set again each time it becomes busy (BTN-37). fullWidth is the full-width attribute: the host is a block-level flex box as wide as its container and the native <button> grows to fill it; while a host lays it out (a button group, a toolbar, the actions of a dialog, a popover, a callout, an empty state, a file picker) the element carries the custom state placed (:state(placed)), under which full-width does nothing (BTN-39). destructive is a boolean attribute; it draws, and exposes nothing more (BTN-42), and on a link it draws nothing (BTN-43). | The title is the label and the icon view builder the icon; an icon-only button is the initializer that takes label: and an icon and no title. A toggle is the initializer that takes isSelected: Binding<Bool>. disabled follows SwiftUI's .disabled(_:) environment. width: TanreiButtonWidth = .default is a parameter of the icon-only initializer alone, so a labelled button cannot be given one. Not built on this platform yet: the initializer that takes destination: URL in place of action: (there is none that takes both a destination and isSelected, so a toggle cannot be given one) draws the same control as a SwiftUI Link, so the address is opened by the environment's openURL — an app that routes addresses itself provides an OpenURLAction, which is how the navigation is cancelled — and VoiceOver reads the link trait. target: TanreiLinkTarget = .same and targetLabel (the accessibility hint) are parameters of that initializer alone. Not built on this platform yet: the initializers that take a title take label: String? = nil as well, set with .accessibilityLabel over the title's text. SwiftUI has no form element that sends values, so there is no type (BTN-34): an app that wants Return to press a view's main button gives that TanreiButton .keyboardShortcut(.defaultAction), or calls the same function from a text field's action. Not built on this platform yet: busy and busyLabel (BTN-36, BTN-37), and focusableWhenDisabled (BTN-38). Not built on this platform yet: fullWidth (BTN-39). Not built on this platform yet: role: ButtonRole? = nil on every initializer, as SwiftUI's own Button(role:) takes it: .destructive is destructive, and any other role draws as nil does; the role is passed on to the system, so a destructive Button in a menu, a swipe action or a confirmation dialog is treated as SwiftUI treats its own (BTN-40 to BTN-43). | Compose idiom is the inverse flag enabled. A non-null onCheckedChange makes it a toggle (as IconToggleButton), with checked its state; an icon-only button is the overload with an icon and a contentDescription and no text. width: TanreiButtonWidth = TanreiButtonWidth.Default is a parameter of the icon-only overload alone. Not built on this platform yet: the overload that takes href: String and no onCheckedChange opens the address through LocalUriHandler.current after onClick; an app that routes addresses itself provides its own UriHandler. Compose has no link role for a clickable element (only link annotations inside text), so the node drops Role.Button and carries no role, and the README says so. target: TanreiLinkTarget = TanreiLinkTarget.Same; targetLabel is appended to the node's state description. Not built on this platform yet: the overloads that take text take contentDescription: String? = null as well; given, the node's semantics are cleared and set again with it, because a merged node would otherwise read the text and the description both. Compose has no form element, so there is no type (BTN-34): an app calls the same function from onClick and from a text field's action. Not built on this platform yet: busy and busyLabel (BTN-36, BTN-37), and focusableWhenDisabled (BTN-38). Not built on this platform yet: fullWidth (BTN-39). Not built on this platform yet: destructive: Boolean = false on every overload; Compose has no destructive role, so it draws and adds no semantics (BTN-40 to BTN-43). | Flutter idiom: a null onPressed disables the button; iconAlignment (start / end) is Flutter's own name for the icon's side. A non-null isSelected makes it a toggle and onPressed flips it; an icon-only button is the TanreiButton.icon constructor, whose semanticLabel is required. width (TanreiButtonWidth.normal, .narrow, .wide; default is a reserved word in Dart) is a parameter of TanreiButton.icon alone. Not built on this platform yet: the TanreiButton.link and TanreiButton.iconLink constructors (href is a Uri) has Semantics(link: true) with the address as its linkUrl. The package has no plugin dependency, so the address is opened by the nearest TanreiLinkOpener, an inherited widget the app provides once (calling url_launcher, or its own router); without one the control opens nothing and reports it in debug builds. target is a TanreiLinkTarget; targetSemanticLabel is the semantics hint. Not built on this platform yet: the constructors that take a child label take semanticLabel as well, optional there, applied with the child's own semantics excluded. Flutter's Form validates and saves and sends nothing, and has no default button, so there is no type (BTN-34): an app calls the same function from onPressed and from a text field's action. Not built on this platform yet: busy and busySemanticLabel (BTN-36, BTN-37), and focusableWhenDisabled (BTN-38). Not built on this platform yet: fullWidth (BTN-39). Not built on this platform yet: isDestructiveAction (bool, default false), the name Flutter's own CupertinoDialogAction gives the same flag; it draws and adds no semantics (BTN-40 to BTN-43). | The label is children and the icon the icon prop; an icon-only button has no children and requires accessibilityLabel. A toggle has accessibilityState.selected and the togglebutton role where React Native offers it. width ("default" | "narrow" | "wide") is the icon-only width, not a layout width; it is ignored with children. Not built on this platform yet: a Button with href has accessibilityRole="link" and opens the address with Linking.openURL after onPress, unless onPress called event.preventDefault(). target is "same" | "new"; targetLabel is the accessibilityHint. Not built on this platform yet: accessibilityLabel is read with children as well as without, and replaces their text as the name. React Native has no form element, so there is no type (BTN-34): an app calls the same function from onPress and from a text field's action. Not built on this platform yet: busy and busyLabel (BTN-36, BTN-37), and focusableWhenDisabled (BTN-38). Not built on this platform yet: fullWidth (BTN-39). Not built on this platform yet: destructive (boolean, default false), the word React Native's own Alert button style uses; it draws and adds no accessibility props (BTN-40 to BTN-43). |
トークン
| トークン | 参照先 | 解決値（ライト） |
|---|---|---|
--tanrei-comp-button-busy-indicator-thickness | comp.loading-indicator.indicator.thickness.small | 2px |
--tanrei-comp-button-container-gap-large | sys.space.space100 | 8px |
--tanrei-comp-button-container-gap-medium | sys.space.space100 | 8px |
--tanrei-comp-button-container-gap-small | sys.space.space100 | 8px |
--tanrei-comp-button-container-height-large | — | 56px |
--tanrei-comp-button-container-height-medium | — | 40px |
--tanrei-comp-button-container-height-small | — | 32px |
--tanrei-comp-button-container-padding-block-large | — | 6px |
--tanrei-comp-button-container-padding-block-medium | — | 6px |
--tanrei-comp-button-container-padding-block-small | — | 6px |
--tanrei-comp-button-container-padding-inline-end-with-icon-large | sys.space.space200 | 16px |
--tanrei-comp-button-container-padding-inline-end-with-icon-medium | sys.space.space150 | 12px |
--tanrei-comp-button-container-padding-inline-end-with-icon-small | sys.space.space150 | 12px |
--tanrei-comp-button-container-padding-inline-end-large | sys.space.space300 | 24px |
--tanrei-comp-button-container-padding-inline-end-medium | sys.space.space200 | 16px |
--tanrei-comp-button-container-padding-inline-end-small | sys.space.space200 | 16px |
--tanrei-comp-button-container-padding-inline-narrow-large | sys.space.space50 | 4px |
--tanrei-comp-button-container-padding-inline-narrow-medium | sys.space.space50 | 4px |
--tanrei-comp-button-container-padding-inline-narrow-small | sys.space.space50 | 4px |
--tanrei-comp-button-container-padding-inline-start-with-icon-large | sys.space.space200 | 16px |
--tanrei-comp-button-container-padding-inline-start-with-icon-medium | sys.space.space150 | 12px |
--tanrei-comp-button-container-padding-inline-start-with-icon-small | sys.space.space150 | 12px |
--tanrei-comp-button-container-padding-inline-start-large | sys.space.space300 | 24px |
--tanrei-comp-button-container-padding-inline-start-medium | sys.space.space200 | 16px |
--tanrei-comp-button-container-padding-inline-start-small | sys.space.space200 | 16px |
--tanrei-comp-button-container-shape | sys.shape.corner.full | 9999px |
--tanrei-comp-button-container-width-wide-large | — | 72px |
--tanrei-comp-button-container-width-wide-medium | — | 52px |
--tanrei-comp-button-container-width-wide-small | — | 40px |
--tanrei-comp-button-disabled-container-shape | — | 9999px |
--tanrei-comp-button-disabled-opacity | — | 1 |
--tanrei-comp-button-elevated-container-color | sys.color.surface-container-lowest | |
--tanrei-comp-button-elevated-container-elevation | sys.elevation.level2 | 0px 0px 0px 1px rgb(0 0 0 / 0.08), 0px 1px 2px 0px rgb(0 0 0 / 0.04) |
--tanrei-comp-button-elevated-destructive-container-color | comp.button.elevated.container.color | |
--tanrei-comp-button-elevated-destructive-icon-color | comp.button.elevated.destructive.label.color | |
--tanrei-comp-button-elevated-destructive-label-color | sys.color.error | |
--tanrei-comp-button-elevated-destructive-outline-color | comp.button.elevated.outline.color | |
--tanrei-comp-button-elevated-destructive-state-layer-color | comp.button.elevated.destructive.label.color | |
--tanrei-comp-button-elevated-disabled-container-color | — | |
--tanrei-comp-button-elevated-disabled-container-elevation | — | |
--tanrei-comp-button-elevated-disabled-destructive-container-color | — | |
--tanrei-comp-button-elevated-disabled-destructive-icon-color | — | |
--tanrei-comp-button-elevated-disabled-destructive-label-color | — | |
--tanrei-comp-button-elevated-disabled-destructive-outline-color | — | |
--tanrei-comp-button-elevated-disabled-destructive-state-layer-color | — | |
--tanrei-comp-button-elevated-disabled-icon-color | — | |
--tanrei-comp-button-elevated-disabled-label-color | — | |
--tanrei-comp-button-elevated-disabled-outline-color | — | |
--tanrei-comp-button-elevated-disabled-selected-container-color | — | |
--tanrei-comp-button-elevated-disabled-selected-icon-color | — | |
--tanrei-comp-button-elevated-disabled-selected-label-color | — | |
--tanrei-comp-button-elevated-disabled-selected-outline-color | — | |
--tanrei-comp-button-elevated-disabled-selected-state-layer-color | — | |
--tanrei-comp-button-elevated-disabled-state-layer-color | — | |
--tanrei-comp-button-elevated-disabled-unselected-container-color | — | |
--tanrei-comp-button-elevated-disabled-unselected-icon-color | — | |
--tanrei-comp-button-elevated-disabled-unselected-label-color | — | |
--tanrei-comp-button-elevated-disabled-unselected-outline-color | — | |
--tanrei-comp-button-elevated-disabled-unselected-state-layer-color | — | |
--tanrei-comp-button-elevated-focused-container-color | — | |
--tanrei-comp-button-elevated-focused-container-elevation | — | 0px 0px 0px 1px rgb(0 0 0 / 0.08), 0px 1px 2px 0px rgb(0 0 0 / 0.04) |
--tanrei-comp-button-elevated-focused-destructive-container-color | — | |
--tanrei-comp-button-elevated-focused-destructive-icon-color | — | |
--tanrei-comp-button-elevated-focused-destructive-label-color | — | |
--tanrei-comp-button-elevated-focused-destructive-outline-color | — | |
--tanrei-comp-button-elevated-focused-destructive-state-layer-color | — | |
--tanrei-comp-button-elevated-focused-icon-color | — | |
--tanrei-comp-button-elevated-focused-label-color | — | |
--tanrei-comp-button-elevated-focused-outline-color | — | |
--tanrei-comp-button-elevated-focused-selected-container-color | — | |
--tanrei-comp-button-elevated-focused-selected-icon-color | — | |
--tanrei-comp-button-elevated-focused-selected-label-color | — | |
--tanrei-comp-button-elevated-focused-selected-outline-color | — | |
--tanrei-comp-button-elevated-focused-selected-state-layer-color | — | |
--tanrei-comp-button-elevated-focused-state-layer-color | — | |
--tanrei-comp-button-elevated-focused-unselected-container-color | — | |
--tanrei-comp-button-elevated-focused-unselected-icon-color | — | |
--tanrei-comp-button-elevated-focused-unselected-label-color | — | |
--tanrei-comp-button-elevated-focused-unselected-outline-color | — | |
--tanrei-comp-button-elevated-focused-unselected-state-layer-color | — | |
--tanrei-comp-button-elevated-hovered-container-color | — | |
--tanrei-comp-button-elevated-hovered-container-elevation | — | 0px 0px 0px 1px rgb(0 0 0 / 0.08), 0px 1px 2px 0px rgb(0 0 0 / 0.04) |
--tanrei-comp-button-elevated-hovered-destructive-container-color | — | |
--tanrei-comp-button-elevated-hovered-destructive-icon-color | — | |
--tanrei-comp-button-elevated-hovered-destructive-label-color | — | |
--tanrei-comp-button-elevated-hovered-destructive-outline-color | — | |
--tanrei-comp-button-elevated-hovered-destructive-state-layer-color | — | |
--tanrei-comp-button-elevated-hovered-icon-color | — | |
--tanrei-comp-button-elevated-hovered-label-color | — | |
--tanrei-comp-button-elevated-hovered-outline-color | — | |
--tanrei-comp-button-elevated-hovered-selected-container-color | — | |
--tanrei-comp-button-elevated-hovered-selected-icon-color | — | |
--tanrei-comp-button-elevated-hovered-selected-label-color | — | |
--tanrei-comp-button-elevated-hovered-selected-outline-color | — | |
--tanrei-comp-button-elevated-hovered-selected-state-layer-color | — | |
--tanrei-comp-button-elevated-hovered-state-layer-color | — | |
--tanrei-comp-button-elevated-hovered-unselected-container-color | — | |
--tanrei-comp-button-elevated-hovered-unselected-icon-color | — | |
--tanrei-comp-button-elevated-hovered-unselected-label-color | — | |
--tanrei-comp-button-elevated-hovered-unselected-outline-color | — | |
--tanrei-comp-button-elevated-hovered-unselected-state-layer-color | — | |
--tanrei-comp-button-elevated-icon-color | comp.button.elevated.label.color | |
--tanrei-comp-button-elevated-label-color | sys.color.on-surface | |
--tanrei-comp-button-elevated-outline-color | — | |
--tanrei-comp-button-elevated-pressed-container-color | — | |
--tanrei-comp-button-elevated-pressed-container-elevation | — | 0px 0px 0px 1px rgb(0 0 0 / 0.08), 0px 1px 2px 0px rgb(0 0 0 / 0.04) |
--tanrei-comp-button-elevated-pressed-destructive-container-color | — | |
--tanrei-comp-button-elevated-pressed-destructive-icon-color | — | |
--tanrei-comp-button-elevated-pressed-destructive-label-color | — | |
--tanrei-comp-button-elevated-pressed-destructive-outline-color | — | |
--tanrei-comp-button-elevated-pressed-destructive-state-layer-color | — | |
--tanrei-comp-button-elevated-pressed-icon-color | — | |
--tanrei-comp-button-elevated-pressed-label-color | — | |
--tanrei-comp-button-elevated-pressed-outline-color | — | |
--tanrei-comp-button-elevated-pressed-selected-container-color | — | |
--tanrei-comp-button-elevated-pressed-selected-icon-color | — | |
--tanrei-comp-button-elevated-pressed-selected-label-color | — | |
--tanrei-comp-button-elevated-pressed-selected-outline-color | — | |
--tanrei-comp-button-elevated-pressed-selected-state-layer-color | — | |
--tanrei-comp-button-elevated-pressed-state-layer-color | — | |
--tanrei-comp-button-elevated-pressed-unselected-container-color | — | |
--tanrei-comp-button-elevated-pressed-unselected-icon-color | — | |
--tanrei-comp-button-elevated-pressed-unselected-label-color | — | |
--tanrei-comp-button-elevated-pressed-unselected-outline-color | — | |
--tanrei-comp-button-elevated-pressed-unselected-state-layer-color | — | |
--tanrei-comp-button-elevated-selected-container-color | sys.color.primary | |
--tanrei-comp-button-elevated-selected-icon-color | comp.button.elevated.selected.label.color | |
--tanrei-comp-button-elevated-selected-label-color | sys.color.on-primary | |
--tanrei-comp-button-elevated-selected-outline-color | — | |
--tanrei-comp-button-elevated-selected-state-layer-color | comp.button.elevated.selected.label.color | |
--tanrei-comp-button-elevated-state-layer-color | comp.button.elevated.label.color | |
--tanrei-comp-button-elevated-unselected-container-color | sys.color.surface-container-lowest | |
--tanrei-comp-button-elevated-unselected-icon-color | comp.button.elevated.unselected.label.color | |
--tanrei-comp-button-elevated-unselected-label-color | sys.color.on-surface-variant | |
--tanrei-comp-button-elevated-unselected-outline-color | — | |
--tanrei-comp-button-elevated-unselected-state-layer-color | comp.button.elevated.unselected.label.color | |
--tanrei-comp-button-filled-container-color | sys.color.primary | |
--tanrei-comp-button-filled-container-elevation | sys.elevation.level0 | |
--tanrei-comp-button-filled-destructive-container-color | sys.color.error | |
--tanrei-comp-button-filled-destructive-icon-color | comp.button.filled.destructive.label.color | |
--tanrei-comp-button-filled-destructive-label-color | sys.color.on-error | |
--tanrei-comp-button-filled-destructive-outline-color | comp.button.filled.outline.color | |
--tanrei-comp-button-filled-destructive-state-layer-color | comp.button.filled.destructive.label.color | |
--tanrei-comp-button-filled-disabled-container-color | — | |
--tanrei-comp-button-filled-disabled-container-elevation | — | |
--tanrei-comp-button-filled-disabled-destructive-container-color | — | |
--tanrei-comp-button-filled-disabled-destructive-icon-color | — | |
--tanrei-comp-button-filled-disabled-destructive-label-color | — | |
--tanrei-comp-button-filled-disabled-destructive-outline-color | — | |
--tanrei-comp-button-filled-disabled-destructive-state-layer-color | — | |
--tanrei-comp-button-filled-disabled-icon-color | — | |
--tanrei-comp-button-filled-disabled-label-color | — | |
--tanrei-comp-button-filled-disabled-outline-color | — | |
--tanrei-comp-button-filled-disabled-selected-container-color | — | |
--tanrei-comp-button-filled-disabled-selected-icon-color | — | |
--tanrei-comp-button-filled-disabled-selected-label-color | — | |
--tanrei-comp-button-filled-disabled-selected-outline-color | — | |
--tanrei-comp-button-filled-disabled-selected-state-layer-color | — | |
--tanrei-comp-button-filled-disabled-state-layer-color | — | |
--tanrei-comp-button-filled-disabled-unselected-container-color | — | |
--tanrei-comp-button-filled-disabled-unselected-icon-color | — | |
--tanrei-comp-button-filled-disabled-unselected-label-color | — | |
--tanrei-comp-button-filled-disabled-unselected-outline-color | — | |
--tanrei-comp-button-filled-disabled-unselected-state-layer-color | — | |
--tanrei-comp-button-filled-focused-container-color | — | |
--tanrei-comp-button-filled-focused-container-elevation | — | |
--tanrei-comp-button-filled-focused-destructive-container-color | — | |
--tanrei-comp-button-filled-focused-destructive-icon-color | — | |
--tanrei-comp-button-filled-focused-destructive-label-color | — | |
--tanrei-comp-button-filled-focused-destructive-outline-color | — | |
--tanrei-comp-button-filled-focused-destructive-state-layer-color | — | |
--tanrei-comp-button-filled-focused-icon-color | — | |
--tanrei-comp-button-filled-focused-label-color | — | |
--tanrei-comp-button-filled-focused-outline-color | — | |
--tanrei-comp-button-filled-focused-selected-container-color | — | |
--tanrei-comp-button-filled-focused-selected-icon-color | — | |
--tanrei-comp-button-filled-focused-selected-label-color | — | |
--tanrei-comp-button-filled-focused-selected-outline-color | — | |
--tanrei-comp-button-filled-focused-selected-state-layer-color | — | |
--tanrei-comp-button-filled-focused-state-layer-color | — | |
--tanrei-comp-button-filled-focused-unselected-container-color | — | |
--tanrei-comp-button-filled-focused-unselected-icon-color | — | |
--tanrei-comp-button-filled-focused-unselected-label-color | — | |
--tanrei-comp-button-filled-focused-unselected-outline-color | — | |
--tanrei-comp-button-filled-focused-unselected-state-layer-color | — | |
--tanrei-comp-button-filled-hovered-container-color | — | |
--tanrei-comp-button-filled-hovered-container-elevation | — | |
--tanrei-comp-button-filled-hovered-destructive-container-color | — | |
--tanrei-comp-button-filled-hovered-destructive-icon-color | — | |
--tanrei-comp-button-filled-hovered-destructive-label-color | — | |
--tanrei-comp-button-filled-hovered-destructive-outline-color | — | |
--tanrei-comp-button-filled-hovered-destructive-state-layer-color | — | |
--tanrei-comp-button-filled-hovered-icon-color | — | |
--tanrei-comp-button-filled-hovered-label-color | — | |
--tanrei-comp-button-filled-hovered-outline-color | — | |
--tanrei-comp-button-filled-hovered-selected-container-color | — | |
--tanrei-comp-button-filled-hovered-selected-icon-color | — | |
--tanrei-comp-button-filled-hovered-selected-label-color | — | |
--tanrei-comp-button-filled-hovered-selected-outline-color | — | |
--tanrei-comp-button-filled-hovered-selected-state-layer-color | — | |
--tanrei-comp-button-filled-hovered-state-layer-color | — | |
--tanrei-comp-button-filled-hovered-unselected-container-color | — | |
--tanrei-comp-button-filled-hovered-unselected-icon-color | — | |
--tanrei-comp-button-filled-hovered-unselected-label-color | — | |
--tanrei-comp-button-filled-hovered-unselected-outline-color | — | |
--tanrei-comp-button-filled-hovered-unselected-state-layer-color | — | |
--tanrei-comp-button-filled-icon-color | comp.button.filled.label.color | |
--tanrei-comp-button-filled-label-color | sys.color.on-primary | |
--tanrei-comp-button-filled-outline-color | — | |
--tanrei-comp-button-filled-pressed-container-color | — | |
--tanrei-comp-button-filled-pressed-container-elevation | — | |
--tanrei-comp-button-filled-pressed-destructive-container-color | — | |
--tanrei-comp-button-filled-pressed-destructive-icon-color | — | |
--tanrei-comp-button-filled-pressed-destructive-label-color | — | |
--tanrei-comp-button-filled-pressed-destructive-outline-color | — | |
--tanrei-comp-button-filled-pressed-destructive-state-layer-color | — | |
--tanrei-comp-button-filled-pressed-icon-color | — | |
--tanrei-comp-button-filled-pressed-label-color | — | |
--tanrei-comp-button-filled-pressed-outline-color | — | |
--tanrei-comp-button-filled-pressed-selected-container-color | — | |
--tanrei-comp-button-filled-pressed-selected-icon-color | — | |
--tanrei-comp-button-filled-pressed-selected-label-color | — | |
--tanrei-comp-button-filled-pressed-selected-outline-color | — | |
--tanrei-comp-button-filled-pressed-selected-state-layer-color | — | |
--tanrei-comp-button-filled-pressed-state-layer-color | — | |
--tanrei-comp-button-filled-pressed-unselected-container-color | — | |
--tanrei-comp-button-filled-pressed-unselected-icon-color | — | |
--tanrei-comp-button-filled-pressed-unselected-label-color | — | |
--tanrei-comp-button-filled-pressed-unselected-outline-color | — | |
--tanrei-comp-button-filled-pressed-unselected-state-layer-color | — | |
--tanrei-comp-button-filled-selected-container-color | sys.color.primary | |
--tanrei-comp-button-filled-selected-icon-color | comp.button.filled.selected.label.color | |
--tanrei-comp-button-filled-selected-label-color | sys.color.on-primary | |
--tanrei-comp-button-filled-selected-outline-color | — | |
--tanrei-comp-button-filled-selected-state-layer-color | comp.button.filled.selected.label.color | |
--tanrei-comp-button-filled-state-layer-color | comp.button.filled.label.color | |
--tanrei-comp-button-filled-unselected-container-color | sys.color.surface-container-highest | |
--tanrei-comp-button-filled-unselected-icon-color | comp.button.filled.unselected.label.color | |
--tanrei-comp-button-filled-unselected-label-color | sys.color.on-surface-variant | |
--tanrei-comp-button-filled-unselected-outline-color | — | |
--tanrei-comp-button-filled-unselected-state-layer-color | comp.button.filled.unselected.label.color | |
--tanrei-comp-button-focused-container-shape | — | 9999px |
--tanrei-comp-button-focused-opacity | — | 1 |
--tanrei-comp-button-hovered-container-shape | — | 9999px |
--tanrei-comp-button-hovered-opacity | — | 1 |
--tanrei-comp-button-icon-size-without-label-large | comp.button.icon.size.large | 24px |
--tanrei-comp-button-icon-size-without-label-medium | comp.button.icon.size.medium | 24px |
--tanrei-comp-button-icon-size-without-label-small | comp.button.icon.size.small | 20px |
--tanrei-comp-button-icon-size-large | sys.icon.medium | 24px |
--tanrei-comp-button-icon-size-medium | sys.icon.medium | 24px |
--tanrei-comp-button-icon-size-small | sys.icon.small | 20px |
--tanrei-comp-button-motion-busy-cycle-duration | comp.loading-indicator.motion.cycle-duration | 1000ms |
--tanrei-comp-button-motion-feedback-duration | sys.motion.role.feedback | 450ms |
--tanrei-comp-button-motion-state-duration-large | sys.motion.role.state.large | 250ms |
--tanrei-comp-button-motion-state-duration-medium | sys.motion.role.state.default | 250ms |
--tanrei-comp-button-motion-state-duration-small | sys.motion.role.state.compact | 200ms |
--tanrei-comp-button-motion-state-easing | sys.motion.easing.state | cubic-bezier(0.2, 0, 0, 1) |
--tanrei-comp-button-outline-width-large | sys.border.hairline | 1px |
--tanrei-comp-button-outline-width-medium | sys.border.hairline | 1px |
--tanrei-comp-button-outline-width-small | sys.border.hairline | 1px |
--tanrei-comp-button-outlined-container-color | — | |
--tanrei-comp-button-outlined-container-elevation | sys.elevation.level0 | |
--tanrei-comp-button-outlined-destructive-container-color | comp.button.outlined.container.color | |
--tanrei-comp-button-outlined-destructive-icon-color | comp.button.outlined.destructive.label.color | |
--tanrei-comp-button-outlined-destructive-label-color | sys.color.error | |
--tanrei-comp-button-outlined-destructive-outline-color | sys.color.error | |
--tanrei-comp-button-outlined-destructive-state-layer-color | comp.button.outlined.destructive.label.color | |
--tanrei-comp-button-outlined-disabled-container-color | — | |
--tanrei-comp-button-outlined-disabled-container-elevation | — | |
--tanrei-comp-button-outlined-disabled-destructive-container-color | — | |
--tanrei-comp-button-outlined-disabled-destructive-icon-color | — | |
--tanrei-comp-button-outlined-disabled-destructive-label-color | — | |
--tanrei-comp-button-outlined-disabled-destructive-outline-color | — | |
--tanrei-comp-button-outlined-disabled-destructive-state-layer-color | — | |
--tanrei-comp-button-outlined-disabled-icon-color | — | |
--tanrei-comp-button-outlined-disabled-label-color | — | |
--tanrei-comp-button-outlined-disabled-outline-color | — | |
--tanrei-comp-button-outlined-disabled-selected-container-color | — | |
--tanrei-comp-button-outlined-disabled-selected-icon-color | — | |
--tanrei-comp-button-outlined-disabled-selected-label-color | — | |
--tanrei-comp-button-outlined-disabled-selected-outline-color | — | |
--tanrei-comp-button-outlined-disabled-selected-state-layer-color | — | |
--tanrei-comp-button-outlined-disabled-state-layer-color | — | |
--tanrei-comp-button-outlined-disabled-unselected-container-color | — | |
--tanrei-comp-button-outlined-disabled-unselected-icon-color | — | |
--tanrei-comp-button-outlined-disabled-unselected-label-color | — | |
--tanrei-comp-button-outlined-disabled-unselected-outline-color | — | |
--tanrei-comp-button-outlined-disabled-unselected-state-layer-color | — | |
--tanrei-comp-button-outlined-focused-container-color | — | |
--tanrei-comp-button-outlined-focused-container-elevation | — | |
--tanrei-comp-button-outlined-focused-destructive-container-color | — | |
--tanrei-comp-button-outlined-focused-destructive-icon-color | — | |
--tanrei-comp-button-outlined-focused-destructive-label-color | — | |
--tanrei-comp-button-outlined-focused-destructive-outline-color | — | |
--tanrei-comp-button-outlined-focused-destructive-state-layer-color | — | |
--tanrei-comp-button-outlined-focused-icon-color | — | |
--tanrei-comp-button-outlined-focused-label-color | — | |
--tanrei-comp-button-outlined-focused-outline-color | — | |
--tanrei-comp-button-outlined-focused-selected-container-color | — | |
--tanrei-comp-button-outlined-focused-selected-icon-color | — | |
--tanrei-comp-button-outlined-focused-selected-label-color | — | |
--tanrei-comp-button-outlined-focused-selected-outline-color | — | |
--tanrei-comp-button-outlined-focused-selected-state-layer-color | — | |
--tanrei-comp-button-outlined-focused-state-layer-color | — | |
--tanrei-comp-button-outlined-focused-unselected-container-color | — | |
--tanrei-comp-button-outlined-focused-unselected-icon-color | — | |
--tanrei-comp-button-outlined-focused-unselected-label-color | — | |
--tanrei-comp-button-outlined-focused-unselected-outline-color | — | |
--tanrei-comp-button-outlined-focused-unselected-state-layer-color | — | |
--tanrei-comp-button-outlined-hovered-container-color | — | |
--tanrei-comp-button-outlined-hovered-container-elevation | — | |
--tanrei-comp-button-outlined-hovered-destructive-container-color | — | |
--tanrei-comp-button-outlined-hovered-destructive-icon-color | — | |
--tanrei-comp-button-outlined-hovered-destructive-label-color | — | |
--tanrei-comp-button-outlined-hovered-destructive-outline-color | — | |
--tanrei-comp-button-outlined-hovered-destructive-state-layer-color | — | |
--tanrei-comp-button-outlined-hovered-icon-color | — | |
--tanrei-comp-button-outlined-hovered-label-color | — | |
--tanrei-comp-button-outlined-hovered-outline-color | — | |
--tanrei-comp-button-outlined-hovered-selected-container-color | — | |
--tanrei-comp-button-outlined-hovered-selected-icon-color | — | |
--tanrei-comp-button-outlined-hovered-selected-label-color | — | |
--tanrei-comp-button-outlined-hovered-selected-outline-color | — | |
--tanrei-comp-button-outlined-hovered-selected-state-layer-color | — | |
--tanrei-comp-button-outlined-hovered-state-layer-color | — | |
--tanrei-comp-button-outlined-hovered-unselected-container-color | — | |
--tanrei-comp-button-outlined-hovered-unselected-icon-color | — | |
--tanrei-comp-button-outlined-hovered-unselected-label-color | — | |
--tanrei-comp-button-outlined-hovered-unselected-outline-color | — | |
--tanrei-comp-button-outlined-hovered-unselected-state-layer-color | — | |
--tanrei-comp-button-outlined-icon-color | sys.color.on-surface-variant | |
--tanrei-comp-button-outlined-label-color | sys.color.on-surface | |
--tanrei-comp-button-outlined-outline-color | sys.color.outline-variant | |
--tanrei-comp-button-outlined-pressed-container-color | — | |
--tanrei-comp-button-outlined-pressed-container-elevation | — | |
--tanrei-comp-button-outlined-pressed-destructive-container-color | — | |
--tanrei-comp-button-outlined-pressed-destructive-icon-color | — | |
--tanrei-comp-button-outlined-pressed-destructive-label-color | — | |
--tanrei-comp-button-outlined-pressed-destructive-outline-color | — | |
--tanrei-comp-button-outlined-pressed-destructive-state-layer-color | — | |
--tanrei-comp-button-outlined-pressed-icon-color | — | |
--tanrei-comp-button-outlined-pressed-label-color | — | |
--tanrei-comp-button-outlined-pressed-outline-color | — | |
--tanrei-comp-button-outlined-pressed-selected-container-color | — | |
--tanrei-comp-button-outlined-pressed-selected-icon-color | — | |
--tanrei-comp-button-outlined-pressed-selected-label-color | — | |
--tanrei-comp-button-outlined-pressed-selected-outline-color | — | |
--tanrei-comp-button-outlined-pressed-selected-state-layer-color | — | |
--tanrei-comp-button-outlined-pressed-state-layer-color | — | |
--tanrei-comp-button-outlined-pressed-unselected-container-color | — | |
--tanrei-comp-button-outlined-pressed-unselected-icon-color | — | |
--tanrei-comp-button-outlined-pressed-unselected-label-color | — | |
--tanrei-comp-button-outlined-pressed-unselected-outline-color | — | |
--tanrei-comp-button-outlined-pressed-unselected-state-layer-color | — | |
--tanrei-comp-button-outlined-selected-container-color | sys.color.inverse-surface | |
--tanrei-comp-button-outlined-selected-icon-color | comp.button.outlined.selected.label.color | |
--tanrei-comp-button-outlined-selected-label-color | sys.color.inverse-on-surface | |
--tanrei-comp-button-outlined-selected-outline-color | — | |
--tanrei-comp-button-outlined-selected-state-layer-color | comp.button.outlined.selected.label.color | |
--tanrei-comp-button-outlined-state-layer-color | comp.button.outlined.label.color | |
--tanrei-comp-button-outlined-unselected-container-color | — | |
--tanrei-comp-button-outlined-unselected-icon-color | comp.button.outlined.unselected.label.color | |
--tanrei-comp-button-outlined-unselected-label-color | sys.color.on-surface-variant | |
--tanrei-comp-button-outlined-unselected-outline-color | sys.color.outline-variant | |
--tanrei-comp-button-outlined-unselected-state-layer-color | comp.button.outlined.unselected.label.color | |
--tanrei-comp-button-pressed-container-shape | — | 9999px |
--tanrei-comp-button-pressed-opacity | — | 1 |
--tanrei-comp-button-text-container-color | — | |
--tanrei-comp-button-text-container-elevation | sys.elevation.level0 | |
--tanrei-comp-button-text-destructive-container-color | comp.button.text.container.color | |
--tanrei-comp-button-text-destructive-icon-color | comp.button.text.destructive.label.color | |
--tanrei-comp-button-text-destructive-label-color | sys.color.error | |
--tanrei-comp-button-text-destructive-outline-color | comp.button.text.outline.color | |
--tanrei-comp-button-text-destructive-state-layer-color | comp.button.text.destructive.label.color | |
--tanrei-comp-button-text-disabled-container-color | — | |
--tanrei-comp-button-text-disabled-container-elevation | — | |
--tanrei-comp-button-text-disabled-destructive-container-color | — | |
--tanrei-comp-button-text-disabled-destructive-icon-color | — | |
--tanrei-comp-button-text-disabled-destructive-label-color | — | |
--tanrei-comp-button-text-disabled-destructive-outline-color | — | |
--tanrei-comp-button-text-disabled-destructive-state-layer-color | — | |
--tanrei-comp-button-text-disabled-icon-color | — | |
--tanrei-comp-button-text-disabled-label-color | — | |
--tanrei-comp-button-text-disabled-outline-color | — | |
--tanrei-comp-button-text-disabled-selected-container-color | — | |
--tanrei-comp-button-text-disabled-selected-icon-color | — | |
--tanrei-comp-button-text-disabled-selected-label-color | — | |
--tanrei-comp-button-text-disabled-selected-outline-color | — | |
--tanrei-comp-button-text-disabled-selected-state-layer-color | — | |
--tanrei-comp-button-text-disabled-state-layer-color | — | |
--tanrei-comp-button-text-disabled-unselected-container-color | — | |
--tanrei-comp-button-text-disabled-unselected-icon-color | — | |
--tanrei-comp-button-text-disabled-unselected-label-color | — | |
--tanrei-comp-button-text-disabled-unselected-outline-color | — | |
--tanrei-comp-button-text-disabled-unselected-state-layer-color | — | |
--tanrei-comp-button-text-focused-container-color | — | |
--tanrei-comp-button-text-focused-container-elevation | — | |
--tanrei-comp-button-text-focused-destructive-container-color | — | |
--tanrei-comp-button-text-focused-destructive-icon-color | — | |
--tanrei-comp-button-text-focused-destructive-label-color | — | |
--tanrei-comp-button-text-focused-destructive-outline-color | — | |
--tanrei-comp-button-text-focused-destructive-state-layer-color | — | |
--tanrei-comp-button-text-focused-icon-color | — | |
--tanrei-comp-button-text-focused-label-color | — | |
--tanrei-comp-button-text-focused-outline-color | — | |
--tanrei-comp-button-text-focused-selected-container-color | — | |
--tanrei-comp-button-text-focused-selected-icon-color | — | |
--tanrei-comp-button-text-focused-selected-label-color | — | |
--tanrei-comp-button-text-focused-selected-outline-color | — | |
--tanrei-comp-button-text-focused-selected-state-layer-color | — | |
--tanrei-comp-button-text-focused-state-layer-color | — | |
--tanrei-comp-button-text-focused-unselected-container-color | — | |
--tanrei-comp-button-text-focused-unselected-icon-color | — | |
--tanrei-comp-button-text-focused-unselected-label-color | — | |
--tanrei-comp-button-text-focused-unselected-outline-color | — | |
--tanrei-comp-button-text-focused-unselected-state-layer-color | — | |
--tanrei-comp-button-text-hovered-container-color | — | |
--tanrei-comp-button-text-hovered-container-elevation | — | |
--tanrei-comp-button-text-hovered-destructive-container-color | — | |
--tanrei-comp-button-text-hovered-destructive-icon-color | — | |
--tanrei-comp-button-text-hovered-destructive-label-color | — | |
--tanrei-comp-button-text-hovered-destructive-outline-color | — | |
--tanrei-comp-button-text-hovered-destructive-state-layer-color | — | |
--tanrei-comp-button-text-hovered-icon-color | — | |
--tanrei-comp-button-text-hovered-label-color | — | |
--tanrei-comp-button-text-hovered-outline-color | — | |
--tanrei-comp-button-text-hovered-selected-container-color | — | |
--tanrei-comp-button-text-hovered-selected-icon-color | — | |
--tanrei-comp-button-text-hovered-selected-label-color | — | |
--tanrei-comp-button-text-hovered-selected-outline-color | — | |
--tanrei-comp-button-text-hovered-selected-state-layer-color | — | |
--tanrei-comp-button-text-hovered-state-layer-color | — | |
--tanrei-comp-button-text-hovered-unselected-container-color | — | |
--tanrei-comp-button-text-hovered-unselected-icon-color | — | |
--tanrei-comp-button-text-hovered-unselected-label-color | — | |
--tanrei-comp-button-text-hovered-unselected-outline-color | — | |
--tanrei-comp-button-text-hovered-unselected-state-layer-color | — | |
--tanrei-comp-button-text-icon-color | sys.color.on-surface-variant | |
--tanrei-comp-button-text-label-color | sys.color.on-surface | |
--tanrei-comp-button-text-outline-color | — | |
--tanrei-comp-button-text-pressed-container-color | — | |
--tanrei-comp-button-text-pressed-container-elevation | — | |
--tanrei-comp-button-text-pressed-destructive-container-color | — | |
--tanrei-comp-button-text-pressed-destructive-icon-color | — | |
--tanrei-comp-button-text-pressed-destructive-label-color | — | |
--tanrei-comp-button-text-pressed-destructive-outline-color | — | |
--tanrei-comp-button-text-pressed-destructive-state-layer-color | — | |
--tanrei-comp-button-text-pressed-icon-color | — | |
--tanrei-comp-button-text-pressed-label-color | — | |
--tanrei-comp-button-text-pressed-outline-color | — | |
--tanrei-comp-button-text-pressed-selected-container-color | — | |
--tanrei-comp-button-text-pressed-selected-icon-color | — | |
--tanrei-comp-button-text-pressed-selected-label-color | — | |
--tanrei-comp-button-text-pressed-selected-outline-color | — | |
--tanrei-comp-button-text-pressed-selected-state-layer-color | — | |
--tanrei-comp-button-text-pressed-state-layer-color | — | |
--tanrei-comp-button-text-pressed-unselected-container-color | — | |
--tanrei-comp-button-text-pressed-unselected-icon-color | — | |
--tanrei-comp-button-text-pressed-unselected-label-color | — | |
--tanrei-comp-button-text-pressed-unselected-outline-color | — | |
--tanrei-comp-button-text-pressed-unselected-state-layer-color | — | |
--tanrei-comp-button-text-selected-container-color | — | |
--tanrei-comp-button-text-selected-icon-color | comp.button.text.selected.label.color | |
--tanrei-comp-button-text-selected-label-color | sys.color.on-surface | |
--tanrei-comp-button-text-selected-outline-color | — | |
--tanrei-comp-button-text-selected-state-layer-color | comp.button.text.selected.label.color | |
--tanrei-comp-button-text-state-layer-color | comp.button.text.label.color | |
--tanrei-comp-button-text-unselected-container-color | — | |
--tanrei-comp-button-text-unselected-icon-color | comp.button.text.unselected.label.color | |
--tanrei-comp-button-text-unselected-label-color | sys.color.on-surface-variant | |
--tanrei-comp-button-text-unselected-outline-color | — | |
--tanrei-comp-button-text-unselected-state-layer-color | comp.button.text.unselected.label.color | |
--tanrei-comp-button-tonal-container-color | sys.color.secondary-container | |
--tanrei-comp-button-tonal-container-elevation | sys.elevation.level0 | |
--tanrei-comp-button-tonal-destructive-container-color | sys.color.error-container | |
--tanrei-comp-button-tonal-destructive-icon-color | comp.button.tonal.destructive.label.color | |
--tanrei-comp-button-tonal-destructive-label-color | sys.color.on-error-container | |
--tanrei-comp-button-tonal-destructive-outline-color | comp.button.tonal.outline.color | |
--tanrei-comp-button-tonal-destructive-state-layer-color | comp.button.tonal.destructive.label.color | |
--tanrei-comp-button-tonal-disabled-container-color | — | |
--tanrei-comp-button-tonal-disabled-container-elevation | — | |
--tanrei-comp-button-tonal-disabled-destructive-container-color | — | |
--tanrei-comp-button-tonal-disabled-destructive-icon-color | — | |
--tanrei-comp-button-tonal-disabled-destructive-label-color | — | |
--tanrei-comp-button-tonal-disabled-destructive-outline-color | — | |
--tanrei-comp-button-tonal-disabled-destructive-state-layer-color | — | |
--tanrei-comp-button-tonal-disabled-icon-color | — | |
--tanrei-comp-button-tonal-disabled-label-color | — | |
--tanrei-comp-button-tonal-disabled-outline-color | — | |
--tanrei-comp-button-tonal-disabled-selected-container-color | — | |
--tanrei-comp-button-tonal-disabled-selected-icon-color | — | |
--tanrei-comp-button-tonal-disabled-selected-label-color | — | |
--tanrei-comp-button-tonal-disabled-selected-outline-color | — | |
--tanrei-comp-button-tonal-disabled-selected-state-layer-color | — | |
--tanrei-comp-button-tonal-disabled-state-layer-color | — | |
--tanrei-comp-button-tonal-disabled-unselected-container-color | — | |
--tanrei-comp-button-tonal-disabled-unselected-icon-color | — | |
--tanrei-comp-button-tonal-disabled-unselected-label-color | — | |
--tanrei-comp-button-tonal-disabled-unselected-outline-color | — | |
--tanrei-comp-button-tonal-disabled-unselected-state-layer-color | — | |
--tanrei-comp-button-tonal-focused-container-color | — | |
--tanrei-comp-button-tonal-focused-container-elevation | — | |
--tanrei-comp-button-tonal-focused-destructive-container-color | — | |
--tanrei-comp-button-tonal-focused-destructive-icon-color | — | |
--tanrei-comp-button-tonal-focused-destructive-label-color | — | |
--tanrei-comp-button-tonal-focused-destructive-outline-color | — | |
--tanrei-comp-button-tonal-focused-destructive-state-layer-color | — | |
--tanrei-comp-button-tonal-focused-icon-color | — | |
--tanrei-comp-button-tonal-focused-label-color | — | |
--tanrei-comp-button-tonal-focused-outline-color | — | |
--tanrei-comp-button-tonal-focused-selected-container-color | — | |
--tanrei-comp-button-tonal-focused-selected-icon-color | — | |
--tanrei-comp-button-tonal-focused-selected-label-color | — | |
--tanrei-comp-button-tonal-focused-selected-outline-color | — | |
--tanrei-comp-button-tonal-focused-selected-state-layer-color | — | |
--tanrei-comp-button-tonal-focused-state-layer-color | — | |
--tanrei-comp-button-tonal-focused-unselected-container-color | — | |
--tanrei-comp-button-tonal-focused-unselected-icon-color | — | |
--tanrei-comp-button-tonal-focused-unselected-label-color | — | |
--tanrei-comp-button-tonal-focused-unselected-outline-color | — | |
--tanrei-comp-button-tonal-focused-unselected-state-layer-color | — | |
--tanrei-comp-button-tonal-hovered-container-color | — | |
--tanrei-comp-button-tonal-hovered-container-elevation | — | |
--tanrei-comp-button-tonal-hovered-destructive-container-color | — | |
--tanrei-comp-button-tonal-hovered-destructive-icon-color | — | |
--tanrei-comp-button-tonal-hovered-destructive-label-color | — | |
--tanrei-comp-button-tonal-hovered-destructive-outline-color | — | |
--tanrei-comp-button-tonal-hovered-destructive-state-layer-color | — | |
--tanrei-comp-button-tonal-hovered-icon-color | — | |
--tanrei-comp-button-tonal-hovered-label-color | — | |
--tanrei-comp-button-tonal-hovered-outline-color | — | |
--tanrei-comp-button-tonal-hovered-selected-container-color | — | |
--tanrei-comp-button-tonal-hovered-selected-icon-color | — | |
--tanrei-comp-button-tonal-hovered-selected-label-color | — | |
--tanrei-comp-button-tonal-hovered-selected-outline-color | — | |
--tanrei-comp-button-tonal-hovered-selected-state-layer-color | — | |
--tanrei-comp-button-tonal-hovered-state-layer-color | — | |
--tanrei-comp-button-tonal-hovered-unselected-container-color | — | |
--tanrei-comp-button-tonal-hovered-unselected-icon-color | — | |
--tanrei-comp-button-tonal-hovered-unselected-label-color | — | |
--tanrei-comp-button-tonal-hovered-unselected-outline-color | — | |
--tanrei-comp-button-tonal-hovered-unselected-state-layer-color | — | |
--tanrei-comp-button-tonal-icon-color | comp.button.tonal.label.color | |
--tanrei-comp-button-tonal-label-color | sys.color.on-secondary-container | |
--tanrei-comp-button-tonal-outline-color | — | |
--tanrei-comp-button-tonal-pressed-container-color | — | |
--tanrei-comp-button-tonal-pressed-container-elevation | — | |
--tanrei-comp-button-tonal-pressed-destructive-container-color | — | |
--tanrei-comp-button-tonal-pressed-destructive-icon-color | — | |
--tanrei-comp-button-tonal-pressed-destructive-label-color | — | |
--tanrei-comp-button-tonal-pressed-destructive-outline-color | — | |
--tanrei-comp-button-tonal-pressed-destructive-state-layer-color | — | |
--tanrei-comp-button-tonal-pressed-icon-color | — | |
--tanrei-comp-button-tonal-pressed-label-color | — | |
--tanrei-comp-button-tonal-pressed-outline-color | — | |
--tanrei-comp-button-tonal-pressed-selected-container-color | — | |
--tanrei-comp-button-tonal-pressed-selected-icon-color | — | |
--tanrei-comp-button-tonal-pressed-selected-label-color | — | |
--tanrei-comp-button-tonal-pressed-selected-outline-color | — | |
--tanrei-comp-button-tonal-pressed-selected-state-layer-color | — | |
--tanrei-comp-button-tonal-pressed-state-layer-color | — | |
--tanrei-comp-button-tonal-pressed-unselected-container-color | — | |
--tanrei-comp-button-tonal-pressed-unselected-icon-color | — | |
--tanrei-comp-button-tonal-pressed-unselected-label-color | — | |
--tanrei-comp-button-tonal-pressed-unselected-outline-color | — | |
--tanrei-comp-button-tonal-pressed-unselected-state-layer-color | — | |
--tanrei-comp-button-tonal-selected-container-color | sys.color.secondary | |
--tanrei-comp-button-tonal-selected-icon-color | comp.button.tonal.selected.label.color | |
--tanrei-comp-button-tonal-selected-label-color | sys.color.on-secondary | |
--tanrei-comp-button-tonal-selected-outline-color | — | |
--tanrei-comp-button-tonal-selected-state-layer-color | comp.button.tonal.selected.label.color | |
--tanrei-comp-button-tonal-state-layer-color | comp.button.tonal.label.color | |
--tanrei-comp-button-tonal-unselected-container-color | sys.color.surface-container-highest | |
--tanrei-comp-button-tonal-unselected-icon-color | comp.button.tonal.unselected.label.color | |
--tanrei-comp-button-tonal-unselected-label-color | sys.color.on-surface-variant | |
--tanrei-comp-button-tonal-unselected-outline-color | — | |
--tanrei-comp-button-tonal-unselected-state-layer-color | comp.button.tonal.unselected.label.color | |
--tanrei-comp-button-tone-container-opacity | sys.state.selected-state-layer-opacity | 0.16 |
--tanrei-comp-button-label-typescale-large | sys.typescale.label | 500 14px/1.4286 |
--tanrei-comp-button-label-typescale-medium | sys.typescale.label | 500 14px/1.4286 |
--tanrei-comp-button-label-typescale-small | sys.typescale.label | 500 14px/1.4286 |
フィクスチャ
基準となる描画パターンです。全プラットフォームが同じ ID でスナップショットを撮り、結果を比較できるようにしています。
variant: filled (31)
filled-medium
variant: filled filled-small
variant: filled size: small filled-large
variant: filled size: large filled-disabled
variant: filled disabled: true filled-leading-icon
variant: filled slots: icon filled-trailing-icon
variant: filled iconPosition: trailing slots: icon filled-leading-icon-small
variant: filled size: small slots: icon filled-leading-icon-large
variant: filled size: large slots: icon filled-trailing-icon-small
variant: filled size: small iconPosition: trailing slots: icon filled-trailing-icon-large
variant: filled size: large iconPosition: trailing slots: icon filled-icon
variant: filled label: Favorite slots: icon filled-icon-small
variant: filled size: small label: Favorite slots: icon filled-icon-large
variant: filled size: large label: Favorite slots: icon filled-icon-narrow
variant: filled width: narrow label: Favorite slots: icon filled-icon-wide
variant: filled width: wide label: Favorite slots: icon filled-icon-narrow-small
variant: filled size: small width: narrow label: Favorite slots: icon filled-icon-wide-small
variant: filled size: small width: wide label: Favorite slots: icon filled-icon-narrow-large
variant: filled size: large width: narrow label: Favorite slots: icon filled-icon-wide-large
variant: filled size: large width: wide label: Favorite slots: icon filled-icon-unselected
variant: filled toggle: true selected: false label: Favorite slots: icon filled-icon-selected
variant: filled toggle: true selected: true label: Favorite slots: icon filled-icon-selected-disabled
variant: filled toggle: true selected: true disabled: true label: Favorite slots: icon filled-link
variant: filled href: /getting-started/ filled-link-disabled
variant: filled disabled: true href: /getting-started/ filled-leading-icon-named
variant: filled label: Create a palette slots: icon filled-busy
variant: filled busy: true busyLabel: Deploying filled-disabled-focusable
variant: filled disabled: true focusableWhenDisabled: true full-width
variant: filled fullWidth: true filled-destructive
variant: filled destructive: true filled-destructive-leading-icon
variant: filled destructive: true slots: icon filled-destructive-disabled
variant: filled destructive: true disabled: true variant: tonal (9)
tonal-medium
variant: tonal tonal-icon
variant: tonal label: Favorite slots: icon tonal-icon-wide-selected
variant: tonal width: wide toggle: true selected: true label: Favorite slots: icon tonal-icon-unselected
variant: tonal toggle: true selected: false label: Favorite slots: icon tonal-icon-selected
variant: tonal toggle: true selected: true label: Favorite slots: icon tonal-leading-icon-toggle-unselected
variant: tonal toggle: true selected: false slots: icon tonal-leading-icon-toggle-selected
variant: tonal toggle: true selected: true slots: icon tonal-link-new-leading-icon
variant: tonal href: https://example.com/tanrei target: new targetLabel: opens in a new tab slots: icon tonal-destructive
variant: tonal destructive: true variant: elevated (5)
elevated-medium
variant: elevated elevated-icon
variant: elevated label: Favorite slots: icon elevated-icon-unselected
variant: elevated toggle: true selected: false label: Favorite slots: icon elevated-icon-selected
variant: elevated toggle: true selected: true label: Favorite slots: icon elevated-destructive
variant: elevated destructive: true variant: outlined (12)
outlined-medium
variant: outlined outlined-icon
variant: outlined label: Favorite slots: icon outlined-icon-wide
variant: outlined width: wide label: Favorite slots: icon outlined-icon-unselected
variant: outlined toggle: true selected: false label: Favorite slots: icon outlined-icon-selected
variant: outlined toggle: true selected: true label: Favorite slots: icon outlined-icon-disabled
variant: outlined disabled: true label: Favorite slots: icon outlined-link-new
variant: outlined href: https://example.com/tanrei target: new targetLabel: opens in a new tab outlined-link-new-disabled
variant: outlined disabled: true href: https://example.com/tanrei target: new targetLabel: opens in a new tab outlined-link-named
variant: outlined href: /components/button/ label: Open the Button's page full-width-leading-icon
variant: outlined fullWidth: true slots: icon outlined-destructive
variant: outlined destructive: true outlined-destructive-disabled
variant: outlined destructive: true disabled: true variant: text (18)
text-medium
variant: text text-leading-icon
variant: text slots: icon text-icon
variant: text label: Favorite slots: icon text-icon-small
variant: text size: small label: Favorite slots: icon text-icon-large
variant: text size: large label: Favorite slots: icon text-icon-narrow
variant: text width: narrow label: Favorite slots: icon text-icon-unselected
variant: text toggle: true selected: false label: Favorite slots: icon text-icon-selected
variant: text toggle: true selected: true label: Favorite slots: icon text-leading-icon-toggle-unselected
variant: text toggle: true selected: false slots: icon text-leading-icon-toggle-selected
variant: text toggle: true selected: true slots: icon text-icon-disabled
variant: text disabled: true label: Favorite slots: icon text-link-new-rtl
variant: text href: https://example.com/tanrei target: new targetLabel: opens in a new tab direction: rtl text-icon-link
variant: text href: /getting-started/ label: Getting started slots: icon text-icon-link-new
variant: text href: https://example.com/tanrei target: new targetLabel: opens in a new tab label: Source code slots: icon text-named
variant: text size: small label: Reset: Spacing text-icon-busy
variant: text busy: true busyLabel: Saving label: Save slots: icon text-destructive
variant: text destructive: true text-icon-destructive
variant: text destructive: true label: Delete slots: icon 生成元 specs/button.spec.json, tokens/comp/button.tokens.json, design/tokens/
ボタンは、その場で何かが起こるアクションに使います。フォームの送信、保存、処理の開始、ダイアログの確定などです。Web では、フォームを送信するボタンは、そのことを type で示します（フォームの中でを参照）。
押しても別の場所へ移動するだけなら、それはリンクです。ランディングページの「はじめる」やリストの末尾の「すべて見る」のように、その移動先にボタンの強調がふさわしいときは、ボタンのまま href を指定します。そうすると、リンクのロール、キー操作、ブラウザーの振る舞いを持つリンクになります（移動先のあるボタンはリンクを参照）。文の中にある移動先は、ふつうのテキストリンクのままにします。文章に関わるアクションは、文の一節にせず、文章の後にテキストボタンとして置きます。リンクではないものがリンクのように描かれていると、押すと何が起きるのか分からなくなるからです。
バリアントは強調の度合いを表します。強調には限りがあるので、1 つの画面で使うのは 1 度だけにします。
| バリアント | 強調 | 用途 |
|---|---|---|
| Filled | 最も強い | 画面やダイアログの中で最も重要な、ただ 1 つのアクション。 |
| Tonal | 強い | 重要だが Filled と競合させたくないアクション。補助的な領域での主アクション。 |
| Elevated | 中 | 込み入った背景や模様のある背景から切り離して見せたいアクション。 |
| Outlined | 中 | Filled の隣に置く同格のアクション。「キャンセル」など。 |
| Text | 弱い | 緊急度の低いアクション。カード、ダイアログ、ツールバー内のインラインアクション。 |
destructive は variant ではありません。どの variant とも組み合わせられ、その variant の強調を保ちます（破壊的なアクションを参照）。
variant のないボタンは Filled です。ただし、ダイアログやサイドシートのアクションとして置いたときは、その置き場所の variant（既定のシステムでは Tonal）になります。見た目を変えたいアクションにだけ variant を設定すれば済みます。ポップオーバー、サイドシート、ボトムシート、コールアウト、スナックバー、画像プレビューの閉じるボタンは、どれも小さいアイコンだけのボタンで、同じように置き場所の閉じるボタン用の variant（既定のシステムでは Tonal）になります。状態を示すコールアウトや反転したスナックバーのような色の付いた面では、その面の文字の色でも描かれます。
- ラベルには、何が起こるかを表す動詞、または動詞と名詞の組み合わせを使います。デプロイ、下書きを保存、メンバーを追加 など。
- Filled ボタンは 1 画面に 1 つまでにします。2 つのアクションが同じくらい重要に思えるなら、その画面は 2 つの役割を抱えている可能性があります。
- 主アクションは、そのプラットフォームの利用者が期待する位置に置き、プロダクト全体で順序を揃えます。
- 密度の高いツールバーや表では
small（32）、通常はmedium（40）、タッチ主体の画面やヒーロー領域ではlarge（56）を使います。どのサイズでもヒット領域は確保されます。 - 何かを削除または破棄するアクションに
destructiveを設定し、variant はほかのアクションと同じく強調の度合いで選びます。 - 何かを削除する場所へのリンクは普通のリンクにし、ラベルで行き先を伝えます。
destructiveは、その場所で削除を行うボタンに設定します。 - アイコンスロットはラベルを補強するために使います。ラベルを省くのは、検索、閉じる、その他のように広く通じるグリフのときだけにし、
labelでボタンに名前を付けます。
- ボタンの click で画面を移動させない。移動先のあるコントロールはリンクです。
hrefを指定すれば、新しいタブで開け、アドレスをコピーでき、リンクとして読み上げられます。 - 「保存」や「削除」のようにページに作用するものに
hrefを付けない。targetLabelで伝えずに新しいタブを開くこともしません。 - リストの全行に Filled ボタンを置かない。Text ボタンにするか、選択した項目に作用するアクションを上部に 1 つ置きます。
- 入力の不備を伝える唯一の手段としてボタンを無効化しない。有効のままにして、押されたときに何が足りないかを説明するか、
focusable-when-disabledで Tab が届くようにして理由を伝えます。 - アクションの進行中にボタンを無効にしない。
busyを設定すれば、フォーカスはボタンに残ります。 destructiveを強調のために使わない。何も壊さないアクションにも使わない。画面のアクションがすべて赤ければ、どれも目立ちません。- リンクを赤くしない。ボタンに
hrefとdestructiveを両方付けない。リンクは行き先へ連れて行くだけなので、ボタンはdestructiveを無視し、その variant のリンクとして描かれます。 - ラベルを途中で切らない。ボタンの幅を広げるか、ラベルを短くします。
- アイコンだけのボタンを
labelなしで置かない。グリフは名前になりません。 - narrow のアイコンだけのボタンを、自分で隙間なく並べない。ターゲットは見えている端の外側まで届くので、重なってしまいます。
ラベルの末尾に句読点は付けません。1〜2 語を目安にします。書き方は、プロダクトのそれぞれの言語でのラベルの書き方に合わせます。英語ではセンテンスケース（先頭のみ大文字）にし、日本語では「保存します」のような丁寧な文末ではなく、「保存」「デプロイ」のような名詞またはサ変名詞の形にします。
- ロール
button (link while href is set)- ラベル付け
- A button that draws a label is named by that text, unless label is given: then label is the whole name, in place of the drawn text, and it must contain the drawn text (BTN-16). An icon-only button is named by label, which is required; its glyph is decorative to assistive technology. A tooltip may show the same text to sighted pointer users, but it never replaces label. A link button is named in the same way; its name should say where it goes. While target is new, targetLabel is its description ("opens in a new tab"), and the mark is decorative. A description is read after the name and is never the name: what tells one button from its neighbours belongs in the name, and what happens next belongs in the description.
- 最小ターゲット
- 見た目のサイズが小さくても、ヒット領域は最小ターゲットサイズを満たします。 minimum 32px · pointer 44px · spacing 8px · touch 48px
キーボード操作
| キー | 動作 |
|---|---|
| Tab | Moves focus to the button — also to a busy one, and to a disabled one while focusableWhenDisabled is true. |
| Enter / Space | Activates the button; a toggle switches selected. A link button is activated by Enter alone: Space does what it does on any link (on the web it scrolls the page). |
| Enter in a field of the same form | On the web, presses the form's default button — its first submit button — where that is a Button of type submit, and so submits the form; nothing while that button is disabled (BTN-30). Enter in a Tanrei field, checkbox, radio button or switch does the same where the default button is the platform's own. |
備考
- A toggle is a button with an on/off state (aria-pressed on the web, the selected trait on Apple platforms, a toggleable state on Android), not a checkbox or a switch; its name does not change with its state.
- Text must remain readable at 200% text size: the container grows, the label never truncates by default.
- Container heights are minimums: at larger text sizes the container grows in both axes. An icon-only button's glyph is not text, at any of its three widths: where sizes are points or dp (SwiftUI, Compose, Flutter, React Native), text size leaves its circle and its glyph as they are; on the web every Tanrei size follows the root font size (rem), so at 200% text size the circle and its glyph grow together and stay round and whole (BTN-12). Either way its label is still announced.
- The icon's side follows the reading direction: leading is the start (left in left-to-right, right in right-to-left). A glyph whose name the system's icon set marks as mirrored (arrow_forward, chevron_right, reply) is mirrored in a right-to-left layout by the icon helper, not by the button, and the product can force or forbid that for one use (BTN-19).
- How a state looks is a value decision of the active design system (a state-layer mix in Tanrei, possibly explicit colors, a dim, or no hover at all elsewhere). Components read the state's tokens and never compute the effect themselves, with one exception: on a tone a host gives it (BTN-45), whose color is known only where the button is drawn, the button lays the tone over its container at the system's state-layer opacities, as a carousel lays its state layer over a product's image. A system that draws no state layer sets those opacities to 0.
- A narrow icon-only button is drawn narrower than the minimum target; its hit area is not (BTN-21). Leave room for the target beside it, or put narrow buttons in a toolbar or a group that spaces them.
- The outline of an outlined button is the hairline of the default system (the divider's color), which is far below 3:1 against the surface. That is within WCAG 1.4.11: the edge is not what identifies the control. Its label is text held to 4.5:1 and its icon to the same ratio, a toggle that is on is shown by its fill, and focus by the focus ring. A product whose outlined buttons must show a 3:1 edge sets comp.button.outlined.outline.color to sys.color.outline in a layer.
- A button with a destination is a link: the link role, the platform's own link, Enter and not Space. It is not a button that navigates from a click handler: on the web such a button has no address to copy, cannot be opened in a new tab and is announced as something that acts on the page. The look does not say which of the two it is, and need not: sighted people tell a destination from an action by its label, as they do in a toolbar.
- Tanrei draws no visited state for a link button: it is a control whose color says its emphasis and its state, and the web restricts what a visited link may change to colors a page cannot read back. Visited links are a matter for links in running text.
- A link that opens a new context says so twice: the open_in_new mark for people who see it, and targetLabel for people who do not (WCAG 1.1.1: the mark carries information, so it needs a text alternative; technique G201 advises warning before a new window). The words are the product's.
- An action repeated in every row of a list or a table is drawn with one word and named for its row: label is the whole name ("Reset: Spacing"), opening with the drawn word where the language allows. Six buttons that are all named "Reset" cannot be told apart in the list of controls a screen reader offers, and a description does not appear there. The name must contain the drawn text (WCAG 2.5.3, label in name): a person who uses speech input says the word on the button. A debug build reports a name that does not; it never repairs one, because joining two texts into a phrase is a decision about a language, and the words are the product's.
- On the web a Button of type submit or reset is its form's button as the platform's own is: the form validates, fires its submit or reset event, and the pressed button's name and value are sent with it. Enter in a field presses the form's first submit button, and a disabled one stops it. The default type is button, not the platform's submit: a button put in a form for another purpose must never send it by accident (BTN-27, BTN-33).
- A button can keep a form from being sent twice: while busy it is shown and focusable but refuses every press, emits no click and therefore submits nothing (BTN-27 follows click), and it stops Enter in a field as a disabled default button does (BTN-37, BTN-32). Prefer it to disabling the button while the first submission is on its way: a disabled button drops the person's focus, and says nothing of why.
- Where script does not run, or before the element is defined, a web Button is its text and nothing else, and submits nothing; so is every Tanrei field, so a form made of them cannot be filled either. A form that must be sent without script is made of the platform's own controls, with the platform's own submit button.
- The native platforms have no form element, and the Button has no type there (BTN-34): which button the Return key presses is the app's to say, in the platform's idiom.
- A disabled button leaves the focus order, so a keyboard or screen-reader user may never learn it is there or why it does nothing. Where a person can make the action available (fill in the message, choose a file), keep it reachable with focusableWhenDisabled and say why in a tooltip or a description; where the action simply does not apply, leave it out of the focus order (BTN-38).
- destructive adds a color, never a meaning (WCAG 1.4.1, use of color): the error color tells people who see it that the action deletes or discards something, and nothing tells a screen reader user so but the label. So the label names the action and what it acts on ("Delete project", not "OK"), and a dialog that confirms it says what will be lost in its headline and supporting text. The web has no role or state for a destructive action, so none is invented; SwiftUI's destructive role is given where it exists, and the platform decides what it does with it.
- Disabled, a destructive button looks like any disabled button of its variant: the error color is a warning about what a press would do, and a button that cannot be pressed does nothing.
- A tone keeps a button readable on a colored surface its host draws (a status callout, an inverse snackbar): the button's content takes the surface's own content color, which the host holds to the contrast its own text needs, and its container is a translucent layer of that color rather than a color chosen against the page. The layer lowers the contrast between the content and what is under it a little (at 16 % in the default system, about a sixth of the way from the surface toward the content color): a host's content color must still hold 3:1 against that blend for an icon-only button (WCAG 1.4.11) and 4.5:1 for a labelled one (WCAG 1.4.3).
生成元 specs/button.spec.json, tokens/sys/measure.tokens.json
- すべてのプラットフォームで、ボタンのロールと無効状態を支援技術に伝えます。
hrefがあるときは、代わりにリンクのロールを伝え、実行するのは Enter だけになります。 - トグルは押された状態を持つボタンで、チェックボックスでもスイッチでもありません。名前は状態によって変わりません。
- 新しいタブなどで開くリンクは、そのことを 2 通りに伝えます。見える人には
open_in_newの印で、見えない人にはリンクの説明としてのtargetLabelで伝えます。印そのものは支援技術から隠されます。 - 描かれたラベルに加えて
labelがあるときは、1 つのコントロールに 1 つの名前、つまりlabelを伝えます。描かれたテキストがもう一度読み上げられることはありません。 - Web では、フィールドでの Enter がフォームの既定のボタンを押し、無効またはビジー状態の既定のボタンはそのキーを止めます。無効な fieldset の中のボタンは、一緒に無効になります。
- ビジー状態のボタンと、
focusable-when-disabledのある無効なボタンは、フォーカス順に残り、フォーカスを保ちます。どちらも今は実行できないことを支援技術に伝え、ビジー状態のボタンはbusy-labelを 1 度読み上げます。 smallサイズでも、narrow の幅でも、ボタンを大きく描くことなく、ヒット領域は最小ターゲットを満たします。- キーボードフォーカス時に、ギャップとリングからなるフォーカスインジケーターをアニメーションなしで表示します。
- 色はロールの組から取得しており、そのコントラストはすべてのコントラストレベルで検証されています。Outlined のボタンの輪郭は既定のシステムの細い線で、標準のコントラストではあえて控えめにしてあります。コントロールを見分けさせるのは輪郭ではなく、ラベルとアイコンです。中・高コントラストでは、この細い線は 3:1 と 4.5:1 まで強められます。もっと強い輪郭が必要なプロダクトは、レイヤで
comp.button.outlined.outline.colorをsys.color.outlineに設定します。 - 文字サイズを大きくするとコンテナが大きくなり、ラベルは途中で切れません。
destructiveが変えるのは色だけです。ロール、名前、状態、キー操作は、destructiveのない同じボタンと同じです。Web には、アクションが破壊的であることを表すロールや状態がないためです。SwiftUI では、プラットフォーム自身の破壊的なロール（destructive role）になります。
- 文脈がなくても意味が通じるラベルを書きます。プロジェクト名の横に「削除」とだけ書くより、「プロジェクトを削除」のほうが適切です。スクリーンリーダーの利用者は、ボタンだけを単独で聞くことがあります。
- 時間のかかる処理を始めるアクションでは、
busyとbusy-labelを設定し、処理が終わったら結果を読み上げさせます。ボタンを無効にするだけでは、スクリーンリーダーの利用者には何も伝わらず、フォーカスも失われます。 - アクションが破壊的であることを、色だけで伝えないでください。
destructiveはエラーの色で描きますが、その色が見えない人や見分けられない人は、ラベルだけでそれを知ります。「OK」ではなく「プロジェクトを削除」と書き、確認するダイアログでは何が失われるかを示します。 - リンクのボタンには、行き先がわかる名前を付けます。「こちらをクリック」ではなく「請求書を見る」のようにします。
targetがnewのときはtargetLabelを書きます。 - 複数のボタンに同じ言葉が描かれるときは、その言葉を含み、ボタンが何に作用するかを示す
labelをそれぞれに指定します（ラベルより長い名前を参照）。 - フォームの送信ボタンを無効にするときは、何が足りないのかをページ上で伝えます。無効なボタンは Enter も止めますが、それだけでは何も説明しません。
- アイコンだけのボタンには、必ず
labelで名前を付けます。ポインターを使う人のために同じ文言のツールチップを表示してもかまいませんが、labelの代わりにはなりません。