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InicioComponentesBotón

Botón

Permite realizar una acción, activar y desactivar algo o ir a un destino con un solo toque o clic.

content_copyVer en Markdown
Categoría
Acciones
Tokens
comp.button
Nivel
Base

Descripción general

Web
tanrei-button
schedule
SwiftUI
TanreiButton
schedule
Jetpack Compose
TanreiButton
schedule
Flutter
TanreiButton
schedule
React Native
Button
schedule

Generado a partir de docs/status/status.json, specs/button.spec.json

Variantes

FilledTonalElevatedOutlinedText

Área de pruebas

Deploy
filledtonalelevatedoutlinedtext
Cada control fija una propiedad del componente en vivo, y el código cambia con él. La dirección de la página guarda lo que fijes, así que un enlace la abre tal como la dejaste. El código es para la web. Para las demás plataformas, consulta «Correspondencia de nombres por plataforma».

Uso

Los ejemplos de Web y React muestran la especificación actual. SwiftUI, Compose, Flutter y React Native van rezagados: todavía ofrecen la revisión anterior del botón, en la que la forma de solo icono y el conmutador son un botón de icono aparte, y que no tiene anchos de solo icono ni forma de enlace. Sus ejemplos muestran esa revisión hasta que se pongan al día.

<tanrei-button variant="filled">Desplegar</tanrei-button>
<tanrei-button variant="outlined" size="small">Cancelar</tanrei-button>
<tanrei-button busy busy-label="Desplegando">Desplegar</tanrei-button>

<!-- Con href es un enlace, dibujado como el mismo botón. -->
<tanrei-button variant="tonal" href="/pricing/">Ver precios</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}>Desplegar</Button>
<Button variant="outlined" size="small" onClick={cancel}>Cancelar</Button>
<Button disabled>Desplegando…</Button>

// Con href es un enlace, dibujado como el mismo botón.
<Button variant="tonal" href="/pricing/">Ver precios</Button>
 
import Tanrei

TanreiButton("Desplegar", variant: .filled) { deploy() }
TanreiButton("Cancelar", variant: .outlined, size: .small) { cancel() }

// El estado deshabilitado sigue el entorno de SwiftUI.
TanreiButton("Desplegando…") {}
  .disabled(true)
 
import io.github.chnotchy.tanrei.components.*

TanreiButton(text = "Desplegar", onClick = ::deploy, variant = TanreiButtonVariant.Filled)
TanreiButton(text = "Cancelar", onClick = ::cancel, variant = TanreiButtonVariant.Outlined, size = TanreiButtonSize.Small)

// Compose usa el indicador inverso.
TanreiButton(text = "Desplegando…", onClick = {}, enabled = false)
 
import 'package:tanrei/tanrei.dart';

TanreiButton(variant: TanreiButtonVariant.filled, onPressed: deploy, child: const Text('Desplegar'));
TanreiButton(variant: TanreiButtonVariant.outlined, size: TanreiButtonSize.small, onPressed: cancel, child: const Text('Cancelar'));

// Un onPressed nulo deshabilita el botón.
TanreiButton(onPressed: null, child: const Text('Desplegando…'));
 
import { Button } from '@tanrei/react-native';

<Button variant="filled" onPress={deploy}>Desplegar</Button>
<Button variant="outlined" size="small" onPress={cancel}>Cancelar</Button>
<Button disabled>Desplegando…</Button>

Un icono, un icono solo y conmutadores

Un botón puede llevar un icono junto a su etiqueta, al inicio o, con iconPosition en trailing, al final. El margen interior del lado del icono es un paso más ajustado que el del lado de la etiqueta, de modo que ambos se ven equilibrados. Sin etiqueta es de solo icono: un círculo tan ancho como alto es el botón, que recibe su nombre de label, que entonces es obligatorio. Con toggle activado, cambia su propio selected en cada pulsación, muestra el estado con sus colores y con el relleno del glifo, y lo anuncia como un estado pulsado.

Botones de solo icono y un conmutador

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En Tanrei, el botón de icono no es un componente aparte. Si conoces los nombres de Material, aquí es donde fueron a parar:

Material Tanrei
Icon button Button con un icono y sin etiqueta
Standard icon button la variante text
Icon buttons filled, tonal y outlined las variantes filled, tonal y outlined
Icon toggle button toggle y selected

Dale un icono a un conmutador de texto. Sin contenedor, un conmutador de texto que solo tiene etiqueta muestra su estado únicamente con un cambio en el color del texto; el relleno del glifo hace visible el estado.

Anchos de un botón de solo icono

Un botón de solo icono tiene tres anchos. Su altura nunca cambia con ellos, y un botón con etiqueta ignora width.

width En el sistema predeterminado (small / medium / large) Úsalo para
default Tan ancho como alto: 32 / 40 / 56, un círculo La mayoría de las acciones de icono.
narrow El glifo y un pequeño margen interior a cada lado: 28 / 32 / 32, una cápsula Una fila apretada de acciones de icono, como las herramientas al final de un campo o una fila de tabla densa.
wide 40 / 52 / 72, una cápsula La única acción de una fila que debe pesar más que sus vecinas.

Anchos de solo icono: default, narrow y wide

addaddaddmore_vertplay_arrow

Un botón estrecho mide exactamente su glifo más el margen interior de cada lado, así que el glifo nunca toca el borde de la cápsula, y el botón sigue al glifo cuando un sistema de diseño le cambia el tamaño. Se dibuja más estrecho que el objetivo mínimo, pero su área de pulsación no lo es: el objetivo se extiende más allá de sus bordes visibles. Déjale espacio junto al botón, o coloca los botones estrechos en una barra de herramientas o en un grupo de botones, que espacian sus elementos.

Ocupado, y deshabilitado pero alcanzable

Mientras la acción que inició un botón está en curso, define busy en lugar de disabled. Un botón ocupado conserva su tamaño, su lugar en el orden del foco y el foco de la persona. Dibuja el arco del indicador de carga en lugar de su etiqueta y rechaza cualquier pulsación, así que un botón de envío no puede enviar su formulario dos veces; también detiene Enter en los campos del formulario. La tecnología de apoyo oye busy-label («Desplegando») una vez, cuando el botón pasa a estar ocupado. Di qué ha pasado cuando la acción termine: el botón no anuncia nada entonces.

Un botón deshabilitado sale del orden del foco, así que quien usa un teclado o un lector de pantalla puede no encontrarlo nunca, ni saber por qué no hace nada. Donde la persona puede hacer que la acción esté disponible, como un botón de enviar mientras el mensaje está vacío, añade focusable-when-disabled: el botón se dibuja y se anuncia como deshabilitado y no hace nada, pero Tab sigue llegando a él, así que un tooltip o una descripción pueden decir por qué.

Ocupado, y deshabilitado pero alcanzable

DesplegarsaveEnviar

Ancho completo

Añade full-width para que un botón sea tan ancho como su contenedor, por ejemplo la única acción al pie de un formulario, una tarjeta o una hoja estrechos. Conserva la altura, los márgenes interiores y las esquinas de su tamaño, y su etiqueta y su icono quedan centrados. Una etiqueta que no cabe pasa a la línea siguiente en lugar de cortarse. Donde un grupo de botones, una barra de herramientas o las acciones de un diálogo o de un popover disponen los botones, son ellos quienes deciden los anchos y full-width en un botón no hace nada: da full-width al grupo de botones para repartir una fila entre varios botones.

Botones de ancho completo

Crear cuentauploadSubir un archivo

Acciones destructivas

Define destructive en un botón cuya acción elimina o descarta algo que quizá no se pueda recuperar: Eliminar, Descartar, Quitar miembro. El botón conserva el énfasis de su variante y toma el color de error dentro de ella. Un botón filled se rellena con el color de error y uno tonal con el contenedor de error; un botón elevated, outlined o text dibuja su etiqueta en el color de error, y uno outlined también su borde. Deshabilitado, se ve como cualquier botón deshabilitado de su variante.

Elige la variante como para cualquier otra acción. Usa filled donde eliminar es el paso para el que existe la vista, como la acción que confirma un diálogo «¿Eliminar el proyecto?». Usa outlined o text donde es una acción entre varias, como «Quitar» en cada fila de una lista. Un botón de solo icono también admite destructive, pero para una acción que no se puede deshacer una etiqueta es más clara que un glifo. Un conmutador no tiene aspecto destructivo.

Un enlace tampoco lo tiene. Un botón con href ignora destructive y se dibuja como el enlace de su variante, porque seguir un enlace no elimina nada: solo lleva a la persona al lugar donde se puede eliminar algo. Marca la acción de ese lugar, como el botón Eliminar de la página que abre el enlace. Las compilaciones de depuración notifican un enlace al que se le da destructive.

Botones destructivos en cada variante, y de solo icono

Eliminar proyectoDescartar borradorQuitar miembroBorrar historialdelete

Un botón con destino es un enlace

Dale un href a un botón y será un enlace, no un botón: el mismo control, dibujado con los mismos tokens en todos los estados, pero con el rol de enlace y todo lo que la plataforma da a un enlace. En la web es un ancla real, de modo que las personas pueden abrirlo en una pestaña nueva, copiar su dirección y ver adónde lleva antes de seguirlo. Usa esta forma siempre que activar el control solo lleve a la persona a otro lugar. No navegues desde el controlador de clic de un botón normal.

Enlaces: mismo lugar, pestaña nueva, solo icono y deshabilitado

Grupo de botonesBarra de herramientasappsGrupo de botones
 
<tanrei-button href="/getting-started/">Empezar</tanrei-button>

<!-- Una pestaña nueva: la marca que sigue a la etiqueta se dibuja sola; target-label es lo que oye un lector de pantalla. -->
<tanrei-button variant="outlined" href="https://example.com/source" target="new" target-label="se abre en una pestaña nueva">
  Ver código fuente
</tanrei-button>

<!-- Solo en la web: rel y download pasan al ancla. -->
<tanrei-button variant="tonal" href="/report.pdf" download="report.pdf"><span slot="icon">download</span>Descargar informe</tanrei-button>

<script type="module">
  import '@tanrei/web/components/button';
  // click se emite primero. Un enrutador del lado del cliente lo cancela y se encarga de la navegación.
  document.querySelector('[href="/getting-started/"]').addEventListener('click', (event) => {
    event.preventDefault();
    router.navigate('/getting-started/');
  });
</script>
 
import { Button } from '@tanrei/react';

<Button href="/getting-started/">Empezar</Button>

<Button variant="outlined" href="https://example.com/source" target="new" targetLabel="se abre en una pestaña nueva">
  Ver código fuente
</Button>

// click se emite primero. Un enrutador del lado del cliente lo cancela y se encarga de la navegación.
<Button
  href="/getting-started/"
  onClick={(event) => {
    event.preventDefault();
    router.navigate('/getting-started/');
  }}
>
  Empezar
</Button>
  • Teclas. Enter sigue el enlace. Espacio hace lo mismo que en cualquier enlace (en la web, desplaza la página), no lo que hace en un botón.
  • target. same (el valor predeterminado) abre el destino donde está la persona. new abre una pestaña o ventana nueva. Un botón con etiqueta muestra entonces el glifo open_in_new después de la etiqueta, salvo que ahí esté tu propio icono final, y targetLabel es obligatorio: Tanrei no incluye textos propios, así que eres tú quien dice «se abre en una pestaña nueva» en el idioma de tu producto.
  • Deshabilitado. Un botón de enlace deshabilitado no se puede seguir, copiar ni arrastrar, y se expone como un enlace deshabilitado.
  • Conmutadores. Un conmutador guarda un estado, así que no admite destino: href se ignora mientras toggle esté activado.
  • Solo en la web, rel y download pasan al ancla. target en new siempre añade noopener a rel.
  • No hay aspecto de enlace visitado. El color de un botón de enlace expresa su énfasis y su estado, como el de cualquier botón.

En un formulario

En la web, un botón es uno de los controles de su formulario, y type dice qué le hace una pulsación al formulario. Las demás plataformas no tienen un elemento de formulario: ahí llamas a una misma función desde la pulsación del botón y desde el action de un campo.

type Una pulsación
button (el valor predeterminado) No le hace nada al formulario. Un botón dentro de un formulario puede abrir un selector o añadir una fila sin enviar nada.
submit Pide al formulario que se envíe, como hace el botón de envío propio del navegador: primero click, después la validación del formulario y después su evento submit.
reset Devuelve todos los controles del formulario a su valor inicial, después de click y del evento reset del formulario. 
<form id="profile">
  <tanrei-text-field label="Nombre" name="name" required></tanrei-text-field>
  <tanrei-button type="reset" variant="text">Borrar</tanrei-button>
  <tanrei-button type="submit" variant="outlined" name="intent" value="draft">Guardar borrador</tanrei-button>
  <tanrei-button type="submit" name="intent" value="publish">Publicar</tanrei-button>
</form>

<!-- Fuera del formulario: el atributo form lo nombra por su id. -->
<tanrei-button type="submit" form="profile" name="intent" value="publish">Publicar</tanrei-button>

<script type="module">
  import '@tanrei/web/components/button';
  import '@tanrei/web/components/text-field';
  document.querySelector('#profile').addEventListener('submit', (event) => {
    event.preventDefault();
    // El name y el value del botón pulsado están en los datos: "draft" o "publish".
    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="Nombre" name="name" required />
  <Button type="reset" variant="text">Borrar</Button>
  <Button type="submit" variant="outlined" name="intent" value="draft">Guardar borrador</Button>
  <Button type="submit" name="intent" value="publish">Publicar</Button>
</form>

// Fuera del formulario: form es el id del formulario.
<Button type="submit" form="profile" name="intent" value="publish">Publicar</Button>
  • Qué formulario. El formulario que rodea al botón, o el que el atributo form nombra por su id: así es como un botón situado en las acciones de un diálogo o en una cabecera de página envía un formulario dentro del cual no está. La propiedad form del elemento devuelve ese formulario y no se puede definir.
  • Enter en un campo. El primer botón de envío de un formulario es su botón predeterminado, sea un botón de Tanrei o el propio del navegador. Enter en un campo del formulario lo pulsa: en un campo de texto, un campo numérico, un campo de color, un cuadro combinado, una entrada de código de un solo uso o una búsqueda de Tanrei, sobre una casilla de verificación, un botón de opción o un interruptor de Tanrei, y en los campos de entrada de una sola línea propios del navegador. El botón emite click como con cualquier pulsación, y cancelar ese click cancela el envío.
  • Deshabilitado. Un botón de envío deshabilitado no envía nada y, mientras es el botón predeterminado del formulario, también detiene Enter, de modo que un formulario que no está listo no se envía a espaldas de su botón. Un botón dentro de un <fieldset disabled> queda deshabilitado con él, sea cual sea su type. Un botón de enlace, no.
  • Qué botón se pulsó. name y value se envían solo cuando fue ese botón el que envió el formulario. Léelos en tu listener de submit, en event.submitter.value o con new FormData(form, event.submitter). event.submitter no es el elemento de Tanrei. Es un <button> nativo que el elemento pone en su propio lugar mientras se despacha el evento submit, así que no compares event.submitter con el elemento.
  • Cómo se envía el formulario es cosa solo del formulario. formaction, formmethod, formenctype, formtarget y formnovalidate no se leen. Para guardar un borrador sin validación, define el noValidate del formulario en el listener de click de ese botón, que se ejecuta antes de la validación.
  • Enviar dos veces. El botón no protege contra una segunda pulsación. Deshabilítalo mientras tu petición está en curso, o ignora el segundo submit.
  • Un conmutador y un enlace ignoran type: una pulsación que cambia un estado o que lleva a algún sitio no envía un formulario. Un type que no es ninguno de los tres se comporta como button.

Un nombre más largo que la etiqueta

Cuando la misma palabra se dibuja en varios botones, como «Quitar» en cada fila de una lista, la palabra por sí sola no le dice a quien usa un lector de pantalla a qué fila pertenece un botón. Da a cada botón un label: pasa a ser el nombre accesible completo del botón, en lugar del texto dibujado, y el botón se dibuja exactamente igual que antes.

La misma palabra en cada fila, y cada botón con el nombre de su fila

QuitarQuitarQuitar
label Etiqueta dibujada Nombre accesible
Indicado Ninguna (solo icono) label
Vacío Dibujada El texto dibujado
Indicado Dibujada label, entero y solo
  • El nombre debe contener el texto dibujado. Quien usa la entrada por voz dice la palabra que ve en el botón. Empieza el nombre por esa palabra donde tu idioma lo permita: «Quitar: Inter» para un botón en el que se dibuja «Quitar». Las mayúsculas y minúsculas y los espacios de más no importan.
  • Las compilaciones de depuración notifican un label que no contiene el texto dibujado. El botón sigue usando el nombre que le diste. Nunca recurre al texto dibujado ni une los dos, porque el orden de una frase pertenece a tu idioma.
  • Una descripción no es un nombre. Lo que distingue un botón de sus vecinos es su nombre. Lo que ocurre cuando se pulsa, como «se abre en una pestaña nueva», es una descripción, que se lee después del nombre y del rol.

Especificaciones

Tamaños y estado deshabilitado

SmallMediumLargeDisabledDisabled

Estados

variant Habilitado Deshabilitado Con el cursor encima Con foco Pulsado
filled filled, Habilitado filled, Deshabilitado filled, Con el cursor encima filled, Con foco filled, Pulsado
filled · toggle · selected filled toggle selected, Habilitado filled toggle selected, Deshabilitado filled toggle selected, Con el cursor encima filled toggle selected, Con foco filled toggle selected, Pulsado
tonal tonal, Habilitado tonal, Deshabilitado tonal, Con el cursor encima tonal, Con foco tonal, Pulsado
tonal · toggle · selected tonal toggle selected, Habilitado tonal toggle selected, Deshabilitado tonal toggle selected, Con el cursor encima tonal toggle selected, Con foco tonal toggle selected, Pulsado
elevated elevated, Habilitado elevated, Deshabilitado elevated, Con el cursor encima elevated, Con foco elevated, Pulsado
elevated · toggle · selected elevated toggle selected, Habilitado elevated toggle selected, Deshabilitado elevated toggle selected, Con el cursor encima elevated toggle selected, Con foco elevated toggle selected, Pulsado
outlined outlined, Habilitado outlined, Deshabilitado outlined, Con el cursor encima outlined, Con foco outlined, Pulsado
outlined · toggle · selected outlined toggle selected, Habilitado outlined toggle selected, Deshabilitado outlined toggle selected, Con el cursor encima outlined toggle selected, Con foco outlined toggle selected, Pulsado
text text, Habilitado text, Deshabilitado text, Con el cursor encima text, Con foco text, Pulsado
text · toggle · selected text toggle selected, Habilitado text toggle selected, Deshabilitado text toggle selected, Con el cursor encima text toggle selected, Con foco text toggle selected, Pulsado
Cada celda es el componente real, detenido en su estado: no se puede usar. No se dibujan aquí: loading.

Anatomía

Anatomía

Dibujado sobre el fixture filled-leading-icon, tal como lo dibuja el paquete web.
Parte Descripción
1 container The shape that holds the content, defines the visual bounds and carries hover, focus and press. A pill with a label; with an icon alone, as wide as it is high (a circle in the default system's corner) or at the narrow or the wide width of its size.
2 label · opcional Text that names the action.
3 icon · opcional A glyph of the system's icon set, at the leading or the trailing side of the label, or alone. Outlined when unselected, filled when selected.
4 outline · opcional The border of the outlined variant.
5 focus-ring Gap-then-ring indicator shown for keyboard focus.

Medidas

Medidas

Longitud Token Valor (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
Dibujado sobre el fixture filled-leading-icon, tal como lo dibuja el paquete web.

Propiedades

Propiedad Tipo Valor predeterminado Descripción
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.

Slots

Slot Descripción
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.

Eventos

Evento Descripción
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.

Estados

Comportamiento

Requisitos en formato EARS. Cada implementación de plataforma se prueba contra estos identificadores. El texto de los requisitos se muestra tal como está en la especificación, en inglés.

ID Requisito
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.

Correspondencia de nombres por plataforma

Paridad no significa API idénticas. Cada plataforma expresa el mismo contrato con su propio estilo.

Especificación Web SwiftUI Jetpack Compose Flutter React Native
Componente tanrei-button TanreiButton TanreiButton TanreiButton Button
variant · Propiedad variant variant variant variant variant
destructive · Propiedad destructive role destructive isDestructiveAction destructive
size · Propiedad size size size size size
width · Propiedad width width width width width
fullWidth · Propiedad fullWidth fullWidth fullWidth fullWidth fullWidth
iconPosition · Propiedad iconPosition iconPosition iconPosition iconAlignment iconPosition
toggle · Propiedad toggle isSelected onCheckedChange isSelected toggle
selected · Propiedad selected isSelected checked isSelected selected
disabled · Propiedad disabled disabled enabled onPressed disabled
focusableWhenDisabled · Propiedad focusableWhenDisabled focusableWhenDisabled focusableWhenDisabled focusableWhenDisabled focusableWhenDisabled
busy · Propiedad busy busy busy busy busy
busyLabel · Propiedad busyLabel busyLabel busyLabel busySemanticLabel busyLabel
href · Propiedad href destination href href href
target · Propiedad target target target target target
targetLabel · Propiedad targetLabel targetLabel targetLabel targetSemanticLabel targetLabel
label · Propiedad label label contentDescription semanticLabel accessibilityLabel
click · Evento click action onClick onPressed onPress
change · Evento change isSelected onCheckedChange onPressed onSelectedChange
Notas 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).

Tokens

Token Alias de Valor resuelto (claro)
--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 #ffffff
--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 #ffffff
--tanrei-comp-button-elevated-destructive-icon-color comp.button.elevated.destructive.label.color #cd262f
--tanrei-comp-button-elevated-destructive-label-color sys.color.error #cd262f
--tanrei-comp-button-elevated-destructive-outline-color comp.button.elevated.outline.color #000000 · 0%
--tanrei-comp-button-elevated-destructive-state-layer-color comp.button.elevated.destructive.label.color #cd262f
--tanrei-comp-button-elevated-disabled-container-color — #1b1b1b · 12%
--tanrei-comp-button-elevated-disabled-container-elevation —
--tanrei-comp-button-elevated-disabled-destructive-container-color — #1b1b1b · 12%
--tanrei-comp-button-elevated-disabled-destructive-icon-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-disabled-destructive-label-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-disabled-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-disabled-destructive-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-disabled-icon-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-disabled-label-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-disabled-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-disabled-selected-container-color — #1b1b1b · 12%
--tanrei-comp-button-elevated-disabled-selected-icon-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-disabled-selected-label-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-disabled-selected-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-disabled-selected-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-disabled-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-disabled-unselected-container-color — #1b1b1b · 12%
--tanrei-comp-button-elevated-disabled-unselected-icon-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-disabled-unselected-label-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-disabled-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-disabled-unselected-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-elevated-focused-container-color — #e8e8e8
--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 — #fae9ea
--tanrei-comp-button-elevated-focused-destructive-icon-color — #cd262f
--tanrei-comp-button-elevated-focused-destructive-label-color — #cd262f
--tanrei-comp-button-elevated-focused-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-focused-destructive-state-layer-color — #cd262f
--tanrei-comp-button-elevated-focused-icon-color — #1b1b1b
--tanrei-comp-button-elevated-focused-label-color — #1b1b1b
--tanrei-comp-button-elevated-focused-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-focused-selected-container-color — #323232
--tanrei-comp-button-elevated-focused-selected-icon-color — #ffffff
--tanrei-comp-button-elevated-focused-selected-label-color — #ffffff
--tanrei-comp-button-elevated-focused-selected-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-focused-selected-state-layer-color — #ffffff
--tanrei-comp-button-elevated-focused-state-layer-color — #1b1b1b
--tanrei-comp-button-elevated-focused-unselected-container-color — #ededed
--tanrei-comp-button-elevated-focused-unselected-icon-color — #4b4b4b
--tanrei-comp-button-elevated-focused-unselected-label-color — #4b4b4b
--tanrei-comp-button-elevated-focused-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-focused-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-elevated-hovered-container-color — #ededed
--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 — #fbeeee
--tanrei-comp-button-elevated-hovered-destructive-icon-color — #cd262f
--tanrei-comp-button-elevated-hovered-destructive-label-color — #cd262f
--tanrei-comp-button-elevated-hovered-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-hovered-destructive-state-layer-color — #cd262f
--tanrei-comp-button-elevated-hovered-icon-color — #1b1b1b
--tanrei-comp-button-elevated-hovered-label-color — #1b1b1b
--tanrei-comp-button-elevated-hovered-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-hovered-selected-container-color — #2d2d2d
--tanrei-comp-button-elevated-hovered-selected-icon-color — #ffffff
--tanrei-comp-button-elevated-hovered-selected-label-color — #ffffff
--tanrei-comp-button-elevated-hovered-selected-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-hovered-selected-state-layer-color — #ffffff
--tanrei-comp-button-elevated-hovered-state-layer-color — #1b1b1b
--tanrei-comp-button-elevated-hovered-unselected-container-color — #f1f1f1
--tanrei-comp-button-elevated-hovered-unselected-icon-color — #4b4b4b
--tanrei-comp-button-elevated-hovered-unselected-label-color — #4b4b4b
--tanrei-comp-button-elevated-hovered-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-hovered-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-elevated-icon-color comp.button.elevated.label.color #1b1b1b
--tanrei-comp-button-elevated-label-color sys.color.on-surface #1b1b1b
--tanrei-comp-button-elevated-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-pressed-container-color — #e8e8e8
--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 — #fae9ea
--tanrei-comp-button-elevated-pressed-destructive-icon-color — #cd262f
--tanrei-comp-button-elevated-pressed-destructive-label-color — #cd262f
--tanrei-comp-button-elevated-pressed-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-pressed-destructive-state-layer-color — #cd262f
--tanrei-comp-button-elevated-pressed-icon-color — #1b1b1b
--tanrei-comp-button-elevated-pressed-label-color — #1b1b1b
--tanrei-comp-button-elevated-pressed-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-pressed-selected-container-color — #323232
--tanrei-comp-button-elevated-pressed-selected-icon-color — #ffffff
--tanrei-comp-button-elevated-pressed-selected-label-color — #ffffff
--tanrei-comp-button-elevated-pressed-selected-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-pressed-selected-state-layer-color — #ffffff
--tanrei-comp-button-elevated-pressed-state-layer-color — #1b1b1b
--tanrei-comp-button-elevated-pressed-unselected-container-color — #ededed
--tanrei-comp-button-elevated-pressed-unselected-icon-color — #4b4b4b
--tanrei-comp-button-elevated-pressed-unselected-label-color — #4b4b4b
--tanrei-comp-button-elevated-pressed-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-pressed-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-elevated-selected-container-color sys.color.primary #1b1b1b
--tanrei-comp-button-elevated-selected-icon-color comp.button.elevated.selected.label.color #ffffff
--tanrei-comp-button-elevated-selected-label-color sys.color.on-primary #ffffff
--tanrei-comp-button-elevated-selected-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-selected-state-layer-color comp.button.elevated.selected.label.color #ffffff
--tanrei-comp-button-elevated-state-layer-color comp.button.elevated.label.color #1b1b1b
--tanrei-comp-button-elevated-unselected-container-color sys.color.surface-container-lowest #ffffff
--tanrei-comp-button-elevated-unselected-icon-color comp.button.elevated.unselected.label.color #4b4b4b
--tanrei-comp-button-elevated-unselected-label-color sys.color.on-surface-variant #4b4b4b
--tanrei-comp-button-elevated-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-elevated-unselected-state-layer-color comp.button.elevated.unselected.label.color #4b4b4b
--tanrei-comp-button-filled-container-color sys.color.primary #1b1b1b
--tanrei-comp-button-filled-container-elevation sys.elevation.level0
--tanrei-comp-button-filled-destructive-container-color sys.color.error #cd262f
--tanrei-comp-button-filled-destructive-icon-color comp.button.filled.destructive.label.color #ffffff
--tanrei-comp-button-filled-destructive-label-color sys.color.on-error #ffffff
--tanrei-comp-button-filled-destructive-outline-color comp.button.filled.outline.color #000000 · 0%
--tanrei-comp-button-filled-destructive-state-layer-color comp.button.filled.destructive.label.color #ffffff
--tanrei-comp-button-filled-disabled-container-color — #1b1b1b · 12%
--tanrei-comp-button-filled-disabled-container-elevation —
--tanrei-comp-button-filled-disabled-destructive-container-color — #1b1b1b · 12%
--tanrei-comp-button-filled-disabled-destructive-icon-color — #1b1b1b · 38%
--tanrei-comp-button-filled-disabled-destructive-label-color — #1b1b1b · 38%
--tanrei-comp-button-filled-disabled-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-filled-disabled-destructive-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-filled-disabled-icon-color — #1b1b1b · 38%
--tanrei-comp-button-filled-disabled-label-color — #1b1b1b · 38%
--tanrei-comp-button-filled-disabled-outline-color — #000000 · 0%
--tanrei-comp-button-filled-disabled-selected-container-color — #1b1b1b · 12%
--tanrei-comp-button-filled-disabled-selected-icon-color — #1b1b1b · 38%
--tanrei-comp-button-filled-disabled-selected-label-color — #1b1b1b · 38%
--tanrei-comp-button-filled-disabled-selected-outline-color — #000000 · 0%
--tanrei-comp-button-filled-disabled-selected-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-filled-disabled-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-filled-disabled-unselected-container-color — #1b1b1b · 12%
--tanrei-comp-button-filled-disabled-unselected-icon-color — #1b1b1b · 38%
--tanrei-comp-button-filled-disabled-unselected-label-color — #1b1b1b · 38%
--tanrei-comp-button-filled-disabled-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-filled-disabled-unselected-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-filled-focused-container-color — #323232
--tanrei-comp-button-filled-focused-container-elevation —
--tanrei-comp-button-filled-focused-destructive-container-color — #d23c44
--tanrei-comp-button-filled-focused-destructive-icon-color — #ffffff
--tanrei-comp-button-filled-focused-destructive-label-color — #ffffff
--tanrei-comp-button-filled-focused-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-filled-focused-destructive-state-layer-color — #ffffff
--tanrei-comp-button-filled-focused-icon-color — #ffffff
--tanrei-comp-button-filled-focused-label-color — #ffffff
--tanrei-comp-button-filled-focused-outline-color — #000000 · 0%
--tanrei-comp-button-filled-focused-selected-container-color — #323232
--tanrei-comp-button-filled-focused-selected-icon-color — #ffffff
--tanrei-comp-button-filled-focused-selected-label-color — #ffffff
--tanrei-comp-button-filled-focused-selected-outline-color — #000000 · 0%
--tanrei-comp-button-filled-focused-selected-state-layer-color — #ffffff
--tanrei-comp-button-filled-focused-state-layer-color — #ffffff
--tanrei-comp-button-filled-focused-unselected-container-color — #dedede
--tanrei-comp-button-filled-focused-unselected-icon-color — #4b4b4b
--tanrei-comp-button-filled-focused-unselected-label-color — #4b4b4b
--tanrei-comp-button-filled-focused-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-filled-focused-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-filled-hovered-container-color — #2d2d2d
--tanrei-comp-button-filled-hovered-container-elevation —
--tanrei-comp-button-filled-hovered-destructive-container-color — #d13740
--tanrei-comp-button-filled-hovered-destructive-icon-color — #ffffff
--tanrei-comp-button-filled-hovered-destructive-label-color — #ffffff
--tanrei-comp-button-filled-hovered-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-filled-hovered-destructive-state-layer-color — #ffffff
--tanrei-comp-button-filled-hovered-icon-color — #ffffff
--tanrei-comp-button-filled-hovered-label-color — #ffffff
--tanrei-comp-button-filled-hovered-outline-color — #000000 · 0%
--tanrei-comp-button-filled-hovered-selected-container-color — #2d2d2d
--tanrei-comp-button-filled-hovered-selected-icon-color — #ffffff
--tanrei-comp-button-filled-hovered-selected-label-color — #ffffff
--tanrei-comp-button-filled-hovered-selected-outline-color — #000000 · 0%
--tanrei-comp-button-filled-hovered-selected-state-layer-color — #ffffff
--tanrei-comp-button-filled-hovered-state-layer-color — #ffffff
--tanrei-comp-button-filled-hovered-unselected-container-color — #e1e1e1
--tanrei-comp-button-filled-hovered-unselected-icon-color — #4b4b4b
--tanrei-comp-button-filled-hovered-unselected-label-color — #4b4b4b
--tanrei-comp-button-filled-hovered-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-filled-hovered-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-filled-icon-color comp.button.filled.label.color #ffffff
--tanrei-comp-button-filled-label-color sys.color.on-primary #ffffff
--tanrei-comp-button-filled-outline-color — #000000 · 0%
--tanrei-comp-button-filled-pressed-container-color — #323232
--tanrei-comp-button-filled-pressed-container-elevation —
--tanrei-comp-button-filled-pressed-destructive-container-color — #d23c44
--tanrei-comp-button-filled-pressed-destructive-icon-color — #ffffff
--tanrei-comp-button-filled-pressed-destructive-label-color — #ffffff
--tanrei-comp-button-filled-pressed-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-filled-pressed-destructive-state-layer-color — #ffffff
--tanrei-comp-button-filled-pressed-icon-color — #ffffff
--tanrei-comp-button-filled-pressed-label-color — #ffffff
--tanrei-comp-button-filled-pressed-outline-color — #000000 · 0%
--tanrei-comp-button-filled-pressed-selected-container-color — #323232
--tanrei-comp-button-filled-pressed-selected-icon-color — #ffffff
--tanrei-comp-button-filled-pressed-selected-label-color — #ffffff
--tanrei-comp-button-filled-pressed-selected-outline-color — #000000 · 0%
--tanrei-comp-button-filled-pressed-selected-state-layer-color — #ffffff
--tanrei-comp-button-filled-pressed-state-layer-color — #ffffff
--tanrei-comp-button-filled-pressed-unselected-container-color — #dedede
--tanrei-comp-button-filled-pressed-unselected-icon-color — #4b4b4b
--tanrei-comp-button-filled-pressed-unselected-label-color — #4b4b4b
--tanrei-comp-button-filled-pressed-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-filled-pressed-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-filled-selected-container-color sys.color.primary #1b1b1b
--tanrei-comp-button-filled-selected-icon-color comp.button.filled.selected.label.color #ffffff
--tanrei-comp-button-filled-selected-label-color sys.color.on-primary #ffffff
--tanrei-comp-button-filled-selected-outline-color — #000000 · 0%
--tanrei-comp-button-filled-selected-state-layer-color comp.button.filled.selected.label.color #ffffff
--tanrei-comp-button-filled-state-layer-color comp.button.filled.label.color #ffffff
--tanrei-comp-button-filled-unselected-container-color sys.color.surface-container-highest #eeeeee
--tanrei-comp-button-filled-unselected-icon-color comp.button.filled.unselected.label.color #4b4b4b
--tanrei-comp-button-filled-unselected-label-color sys.color.on-surface-variant #4b4b4b
--tanrei-comp-button-filled-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-filled-unselected-state-layer-color comp.button.filled.unselected.label.color #4b4b4b
--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 — #000000 · 0%
--tanrei-comp-button-outlined-container-elevation sys.elevation.level0
--tanrei-comp-button-outlined-destructive-container-color comp.button.outlined.container.color #000000 · 0%
--tanrei-comp-button-outlined-destructive-icon-color comp.button.outlined.destructive.label.color #cd262f
--tanrei-comp-button-outlined-destructive-label-color sys.color.error #cd262f
--tanrei-comp-button-outlined-destructive-outline-color sys.color.error #cd262f
--tanrei-comp-button-outlined-destructive-state-layer-color comp.button.outlined.destructive.label.color #cd262f
--tanrei-comp-button-outlined-disabled-container-color — #000000 · 0%
--tanrei-comp-button-outlined-disabled-container-elevation —
--tanrei-comp-button-outlined-disabled-destructive-container-color — #000000 · 0%
--tanrei-comp-button-outlined-disabled-destructive-icon-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-disabled-destructive-label-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-disabled-destructive-outline-color — #000000 · 8%
--tanrei-comp-button-outlined-disabled-destructive-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-disabled-icon-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-disabled-label-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-disabled-outline-color — #000000 · 8%
--tanrei-comp-button-outlined-disabled-selected-container-color — #1b1b1b · 12%
--tanrei-comp-button-outlined-disabled-selected-icon-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-disabled-selected-label-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-disabled-selected-outline-color — #000000 · 0%
--tanrei-comp-button-outlined-disabled-selected-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-disabled-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-disabled-unselected-container-color — #000000 · 0%
--tanrei-comp-button-outlined-disabled-unselected-icon-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-disabled-unselected-label-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-disabled-unselected-outline-color — #000000 · 8%
--tanrei-comp-button-outlined-disabled-unselected-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-outlined-focused-container-color — #1b1b1b · 10%
--tanrei-comp-button-outlined-focused-container-elevation —
--tanrei-comp-button-outlined-focused-destructive-container-color — #cd262f · 10%
--tanrei-comp-button-outlined-focused-destructive-icon-color — #cd262f
--tanrei-comp-button-outlined-focused-destructive-label-color — #cd262f
--tanrei-comp-button-outlined-focused-destructive-outline-color — #cd262f
--tanrei-comp-button-outlined-focused-destructive-state-layer-color — #cd262f
--tanrei-comp-button-outlined-focused-icon-color — #4b4b4b
--tanrei-comp-button-outlined-focused-label-color — #1b1b1b
--tanrei-comp-button-outlined-focused-outline-color — #000000 · 8%
--tanrei-comp-button-outlined-focused-selected-container-color — #343434
--tanrei-comp-button-outlined-focused-selected-icon-color — #f1f1f1
--tanrei-comp-button-outlined-focused-selected-label-color — #f1f1f1
--tanrei-comp-button-outlined-focused-selected-outline-color — #000000 · 0%
--tanrei-comp-button-outlined-focused-selected-state-layer-color — #f1f1f1
--tanrei-comp-button-outlined-focused-state-layer-color — #1b1b1b
--tanrei-comp-button-outlined-focused-unselected-container-color — #4b4b4b · 10%
--tanrei-comp-button-outlined-focused-unselected-icon-color — #4b4b4b
--tanrei-comp-button-outlined-focused-unselected-label-color — #4b4b4b
--tanrei-comp-button-outlined-focused-unselected-outline-color — #000000 · 8%
--tanrei-comp-button-outlined-focused-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-outlined-hovered-container-color — #1b1b1b · 8%
--tanrei-comp-button-outlined-hovered-container-elevation —
--tanrei-comp-button-outlined-hovered-destructive-container-color — #cd262f · 8%
--tanrei-comp-button-outlined-hovered-destructive-icon-color — #cd262f
--tanrei-comp-button-outlined-hovered-destructive-label-color — #cd262f
--tanrei-comp-button-outlined-hovered-destructive-outline-color — #cd262f
--tanrei-comp-button-outlined-hovered-destructive-state-layer-color — #cd262f
--tanrei-comp-button-outlined-hovered-icon-color — #4b4b4b
--tanrei-comp-button-outlined-hovered-label-color — #1b1b1b
--tanrei-comp-button-outlined-hovered-outline-color — #000000 · 8%
--tanrei-comp-button-outlined-hovered-selected-container-color — #303030
--tanrei-comp-button-outlined-hovered-selected-icon-color — #f1f1f1
--tanrei-comp-button-outlined-hovered-selected-label-color — #f1f1f1
--tanrei-comp-button-outlined-hovered-selected-outline-color — #000000 · 0%
--tanrei-comp-button-outlined-hovered-selected-state-layer-color — #f1f1f1
--tanrei-comp-button-outlined-hovered-state-layer-color — #1b1b1b
--tanrei-comp-button-outlined-hovered-unselected-container-color — #4b4b4b · 8%
--tanrei-comp-button-outlined-hovered-unselected-icon-color — #4b4b4b
--tanrei-comp-button-outlined-hovered-unselected-label-color — #4b4b4b
--tanrei-comp-button-outlined-hovered-unselected-outline-color — #000000 · 8%
--tanrei-comp-button-outlined-hovered-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-outlined-icon-color sys.color.on-surface-variant #4b4b4b
--tanrei-comp-button-outlined-label-color sys.color.on-surface #1b1b1b
--tanrei-comp-button-outlined-outline-color sys.color.outline-variant #000000 · 8%
--tanrei-comp-button-outlined-pressed-container-color — #1b1b1b · 10%
--tanrei-comp-button-outlined-pressed-container-elevation —
--tanrei-comp-button-outlined-pressed-destructive-container-color — #cd262f · 10%
--tanrei-comp-button-outlined-pressed-destructive-icon-color — #cd262f
--tanrei-comp-button-outlined-pressed-destructive-label-color — #cd262f
--tanrei-comp-button-outlined-pressed-destructive-outline-color — #cd262f
--tanrei-comp-button-outlined-pressed-destructive-state-layer-color — #cd262f
--tanrei-comp-button-outlined-pressed-icon-color — #4b4b4b
--tanrei-comp-button-outlined-pressed-label-color — #1b1b1b
--tanrei-comp-button-outlined-pressed-outline-color — #000000 · 8%
--tanrei-comp-button-outlined-pressed-selected-container-color — #343434
--tanrei-comp-button-outlined-pressed-selected-icon-color — #f1f1f1
--tanrei-comp-button-outlined-pressed-selected-label-color — #f1f1f1
--tanrei-comp-button-outlined-pressed-selected-outline-color — #000000 · 0%
--tanrei-comp-button-outlined-pressed-selected-state-layer-color — #f1f1f1
--tanrei-comp-button-outlined-pressed-state-layer-color — #1b1b1b
--tanrei-comp-button-outlined-pressed-unselected-container-color — #4b4b4b · 10%
--tanrei-comp-button-outlined-pressed-unselected-icon-color — #4b4b4b
--tanrei-comp-button-outlined-pressed-unselected-label-color — #4b4b4b
--tanrei-comp-button-outlined-pressed-unselected-outline-color — #000000 · 8%
--tanrei-comp-button-outlined-pressed-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-outlined-selected-container-color sys.color.inverse-surface #1f1f1f
--tanrei-comp-button-outlined-selected-icon-color comp.button.outlined.selected.label.color #f1f1f1
--tanrei-comp-button-outlined-selected-label-color sys.color.inverse-on-surface #f1f1f1
--tanrei-comp-button-outlined-selected-outline-color — #000000 · 0%
--tanrei-comp-button-outlined-selected-state-layer-color comp.button.outlined.selected.label.color #f1f1f1
--tanrei-comp-button-outlined-state-layer-color comp.button.outlined.label.color #1b1b1b
--tanrei-comp-button-outlined-unselected-container-color — #000000 · 0%
--tanrei-comp-button-outlined-unselected-icon-color comp.button.outlined.unselected.label.color #4b4b4b
--tanrei-comp-button-outlined-unselected-label-color sys.color.on-surface-variant #4b4b4b
--tanrei-comp-button-outlined-unselected-outline-color sys.color.outline-variant #000000 · 8%
--tanrei-comp-button-outlined-unselected-state-layer-color comp.button.outlined.unselected.label.color #4b4b4b
--tanrei-comp-button-pressed-container-shape — 9999px
--tanrei-comp-button-pressed-opacity — 1
--tanrei-comp-button-text-container-color — #000000 · 0%
--tanrei-comp-button-text-container-elevation sys.elevation.level0
--tanrei-comp-button-text-destructive-container-color comp.button.text.container.color #000000 · 0%
--tanrei-comp-button-text-destructive-icon-color comp.button.text.destructive.label.color #cd262f
--tanrei-comp-button-text-destructive-label-color sys.color.error #cd262f
--tanrei-comp-button-text-destructive-outline-color comp.button.text.outline.color #000000 · 0%
--tanrei-comp-button-text-destructive-state-layer-color comp.button.text.destructive.label.color #cd262f
--tanrei-comp-button-text-disabled-container-color — #000000 · 0%
--tanrei-comp-button-text-disabled-container-elevation —
--tanrei-comp-button-text-disabled-destructive-container-color — #000000 · 0%
--tanrei-comp-button-text-disabled-destructive-icon-color — #1b1b1b · 38%
--tanrei-comp-button-text-disabled-destructive-label-color — #1b1b1b · 38%
--tanrei-comp-button-text-disabled-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-text-disabled-destructive-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-text-disabled-icon-color — #1b1b1b · 38%
--tanrei-comp-button-text-disabled-label-color — #1b1b1b · 38%
--tanrei-comp-button-text-disabled-outline-color — #000000 · 0%
--tanrei-comp-button-text-disabled-selected-container-color — #000000 · 0%
--tanrei-comp-button-text-disabled-selected-icon-color — #1b1b1b · 38%
--tanrei-comp-button-text-disabled-selected-label-color — #1b1b1b · 38%
--tanrei-comp-button-text-disabled-selected-outline-color — #000000 · 0%
--tanrei-comp-button-text-disabled-selected-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-text-disabled-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-text-disabled-unselected-container-color — #000000 · 0%
--tanrei-comp-button-text-disabled-unselected-icon-color — #1b1b1b · 38%
--tanrei-comp-button-text-disabled-unselected-label-color — #1b1b1b · 38%
--tanrei-comp-button-text-disabled-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-text-disabled-unselected-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-text-focused-container-color — #1b1b1b · 10%
--tanrei-comp-button-text-focused-container-elevation —
--tanrei-comp-button-text-focused-destructive-container-color — #cd262f · 10%
--tanrei-comp-button-text-focused-destructive-icon-color — #cd262f
--tanrei-comp-button-text-focused-destructive-label-color — #cd262f
--tanrei-comp-button-text-focused-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-text-focused-destructive-state-layer-color — #cd262f
--tanrei-comp-button-text-focused-icon-color — #4b4b4b
--tanrei-comp-button-text-focused-label-color — #1b1b1b
--tanrei-comp-button-text-focused-outline-color — #000000 · 0%
--tanrei-comp-button-text-focused-selected-container-color — #1b1b1b · 10%
--tanrei-comp-button-text-focused-selected-icon-color — #1b1b1b
--tanrei-comp-button-text-focused-selected-label-color — #1b1b1b
--tanrei-comp-button-text-focused-selected-outline-color — #000000 · 0%
--tanrei-comp-button-text-focused-selected-state-layer-color — #1b1b1b
--tanrei-comp-button-text-focused-state-layer-color — #1b1b1b
--tanrei-comp-button-text-focused-unselected-container-color — #4b4b4b · 10%
--tanrei-comp-button-text-focused-unselected-icon-color — #4b4b4b
--tanrei-comp-button-text-focused-unselected-label-color — #4b4b4b
--tanrei-comp-button-text-focused-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-text-focused-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-text-hovered-container-color — #1b1b1b · 8%
--tanrei-comp-button-text-hovered-container-elevation —
--tanrei-comp-button-text-hovered-destructive-container-color — #cd262f · 8%
--tanrei-comp-button-text-hovered-destructive-icon-color — #cd262f
--tanrei-comp-button-text-hovered-destructive-label-color — #cd262f
--tanrei-comp-button-text-hovered-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-text-hovered-destructive-state-layer-color — #cd262f
--tanrei-comp-button-text-hovered-icon-color — #4b4b4b
--tanrei-comp-button-text-hovered-label-color — #1b1b1b
--tanrei-comp-button-text-hovered-outline-color — #000000 · 0%
--tanrei-comp-button-text-hovered-selected-container-color — #1b1b1b · 8%
--tanrei-comp-button-text-hovered-selected-icon-color — #1b1b1b
--tanrei-comp-button-text-hovered-selected-label-color — #1b1b1b
--tanrei-comp-button-text-hovered-selected-outline-color — #000000 · 0%
--tanrei-comp-button-text-hovered-selected-state-layer-color — #1b1b1b
--tanrei-comp-button-text-hovered-state-layer-color — #1b1b1b
--tanrei-comp-button-text-hovered-unselected-container-color — #4b4b4b · 8%
--tanrei-comp-button-text-hovered-unselected-icon-color — #4b4b4b
--tanrei-comp-button-text-hovered-unselected-label-color — #4b4b4b
--tanrei-comp-button-text-hovered-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-text-hovered-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-text-icon-color sys.color.on-surface-variant #4b4b4b
--tanrei-comp-button-text-label-color sys.color.on-surface #1b1b1b
--tanrei-comp-button-text-outline-color — #000000 · 0%
--tanrei-comp-button-text-pressed-container-color — #1b1b1b · 10%
--tanrei-comp-button-text-pressed-container-elevation —
--tanrei-comp-button-text-pressed-destructive-container-color — #cd262f · 10%
--tanrei-comp-button-text-pressed-destructive-icon-color — #cd262f
--tanrei-comp-button-text-pressed-destructive-label-color — #cd262f
--tanrei-comp-button-text-pressed-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-text-pressed-destructive-state-layer-color — #cd262f
--tanrei-comp-button-text-pressed-icon-color — #4b4b4b
--tanrei-comp-button-text-pressed-label-color — #1b1b1b
--tanrei-comp-button-text-pressed-outline-color — #000000 · 0%
--tanrei-comp-button-text-pressed-selected-container-color — #1b1b1b · 10%
--tanrei-comp-button-text-pressed-selected-icon-color — #1b1b1b
--tanrei-comp-button-text-pressed-selected-label-color — #1b1b1b
--tanrei-comp-button-text-pressed-selected-outline-color — #000000 · 0%
--tanrei-comp-button-text-pressed-selected-state-layer-color — #1b1b1b
--tanrei-comp-button-text-pressed-state-layer-color — #1b1b1b
--tanrei-comp-button-text-pressed-unselected-container-color — #4b4b4b · 10%
--tanrei-comp-button-text-pressed-unselected-icon-color — #4b4b4b
--tanrei-comp-button-text-pressed-unselected-label-color — #4b4b4b
--tanrei-comp-button-text-pressed-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-text-pressed-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-text-selected-container-color — #000000 · 0%
--tanrei-comp-button-text-selected-icon-color comp.button.text.selected.label.color #1b1b1b
--tanrei-comp-button-text-selected-label-color sys.color.on-surface #1b1b1b
--tanrei-comp-button-text-selected-outline-color — #000000 · 0%
--tanrei-comp-button-text-selected-state-layer-color comp.button.text.selected.label.color #1b1b1b
--tanrei-comp-button-text-state-layer-color comp.button.text.label.color #1b1b1b
--tanrei-comp-button-text-unselected-container-color — #000000 · 0%
--tanrei-comp-button-text-unselected-icon-color comp.button.text.unselected.label.color #4b4b4b
--tanrei-comp-button-text-unselected-label-color sys.color.on-surface-variant #4b4b4b
--tanrei-comp-button-text-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-text-unselected-state-layer-color comp.button.text.unselected.label.color #4b4b4b
--tanrei-comp-button-tonal-container-color sys.color.secondary-container #eeeeee
--tanrei-comp-button-tonal-container-elevation sys.elevation.level0
--tanrei-comp-button-tonal-destructive-container-color sys.color.error-container #ffedeb
--tanrei-comp-button-tonal-destructive-icon-color comp.button.tonal.destructive.label.color #3a211f
--tanrei-comp-button-tonal-destructive-label-color sys.color.on-error-container #3a211f
--tanrei-comp-button-tonal-destructive-outline-color comp.button.tonal.outline.color #000000 · 0%
--tanrei-comp-button-tonal-destructive-state-layer-color comp.button.tonal.destructive.label.color #3a211f
--tanrei-comp-button-tonal-disabled-container-color — #1b1b1b · 12%
--tanrei-comp-button-tonal-disabled-container-elevation —
--tanrei-comp-button-tonal-disabled-destructive-container-color — #1b1b1b · 12%
--tanrei-comp-button-tonal-disabled-destructive-icon-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-disabled-destructive-label-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-disabled-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-disabled-destructive-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-disabled-icon-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-disabled-label-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-disabled-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-disabled-selected-container-color — #1b1b1b · 12%
--tanrei-comp-button-tonal-disabled-selected-icon-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-disabled-selected-label-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-disabled-selected-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-disabled-selected-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-disabled-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-disabled-unselected-container-color — #1b1b1b · 12%
--tanrei-comp-button-tonal-disabled-unselected-icon-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-disabled-unselected-label-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-disabled-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-disabled-unselected-state-layer-color — #1b1b1b · 38%
--tanrei-comp-button-tonal-focused-container-color — #dadada
--tanrei-comp-button-tonal-focused-container-elevation —
--tanrei-comp-button-tonal-focused-destructive-container-color — #ebd9d7
--tanrei-comp-button-tonal-focused-destructive-icon-color — #3a211f
--tanrei-comp-button-tonal-focused-destructive-label-color — #3a211f
--tanrei-comp-button-tonal-focused-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-focused-destructive-state-layer-color — #3a211f
--tanrei-comp-button-tonal-focused-icon-color — #262626
--tanrei-comp-button-tonal-focused-label-color — #262626
--tanrei-comp-button-tonal-focused-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-focused-selected-container-color — #636363
--tanrei-comp-button-tonal-focused-selected-icon-color — #ffffff
--tanrei-comp-button-tonal-focused-selected-label-color — #ffffff
--tanrei-comp-button-tonal-focused-selected-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-focused-selected-state-layer-color — #ffffff
--tanrei-comp-button-tonal-focused-state-layer-color — #262626
--tanrei-comp-button-tonal-focused-unselected-container-color — #dedede
--tanrei-comp-button-tonal-focused-unselected-icon-color — #4b4b4b
--tanrei-comp-button-tonal-focused-unselected-label-color — #4b4b4b
--tanrei-comp-button-tonal-focused-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-focused-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-tonal-hovered-container-color — #dedede
--tanrei-comp-button-tonal-hovered-container-elevation —
--tanrei-comp-button-tonal-hovered-destructive-container-color — #efdddb
--tanrei-comp-button-tonal-hovered-destructive-icon-color — #3a211f
--tanrei-comp-button-tonal-hovered-destructive-label-color — #3a211f
--tanrei-comp-button-tonal-hovered-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-hovered-destructive-state-layer-color — #3a211f
--tanrei-comp-button-tonal-hovered-icon-color — #262626
--tanrei-comp-button-tonal-hovered-label-color — #262626
--tanrei-comp-button-tonal-hovered-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-hovered-selected-container-color — #606060
--tanrei-comp-button-tonal-hovered-selected-icon-color — #ffffff
--tanrei-comp-button-tonal-hovered-selected-label-color — #ffffff
--tanrei-comp-button-tonal-hovered-selected-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-hovered-selected-state-layer-color — #ffffff
--tanrei-comp-button-tonal-hovered-state-layer-color — #262626
--tanrei-comp-button-tonal-hovered-unselected-container-color — #e1e1e1
--tanrei-comp-button-tonal-hovered-unselected-icon-color — #4b4b4b
--tanrei-comp-button-tonal-hovered-unselected-label-color — #4b4b4b
--tanrei-comp-button-tonal-hovered-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-hovered-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-tonal-icon-color comp.button.tonal.label.color #262626
--tanrei-comp-button-tonal-label-color sys.color.on-secondary-container #262626
--tanrei-comp-button-tonal-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-pressed-container-color — #dadada
--tanrei-comp-button-tonal-pressed-container-elevation —
--tanrei-comp-button-tonal-pressed-destructive-container-color — #ebd9d7
--tanrei-comp-button-tonal-pressed-destructive-icon-color — #3a211f
--tanrei-comp-button-tonal-pressed-destructive-label-color — #3a211f
--tanrei-comp-button-tonal-pressed-destructive-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-pressed-destructive-state-layer-color — #3a211f
--tanrei-comp-button-tonal-pressed-icon-color — #262626
--tanrei-comp-button-tonal-pressed-label-color — #262626
--tanrei-comp-button-tonal-pressed-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-pressed-selected-container-color — #636363
--tanrei-comp-button-tonal-pressed-selected-icon-color — #ffffff
--tanrei-comp-button-tonal-pressed-selected-label-color — #ffffff
--tanrei-comp-button-tonal-pressed-selected-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-pressed-selected-state-layer-color — #ffffff
--tanrei-comp-button-tonal-pressed-state-layer-color — #262626
--tanrei-comp-button-tonal-pressed-unselected-container-color — #dedede
--tanrei-comp-button-tonal-pressed-unselected-icon-color — #4b4b4b
--tanrei-comp-button-tonal-pressed-unselected-label-color — #4b4b4b
--tanrei-comp-button-tonal-pressed-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-pressed-unselected-state-layer-color — #4b4b4b
--tanrei-comp-button-tonal-selected-container-color sys.color.secondary #525252
--tanrei-comp-button-tonal-selected-icon-color comp.button.tonal.selected.label.color #ffffff
--tanrei-comp-button-tonal-selected-label-color sys.color.on-secondary #ffffff
--tanrei-comp-button-tonal-selected-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-selected-state-layer-color comp.button.tonal.selected.label.color #ffffff
--tanrei-comp-button-tonal-state-layer-color comp.button.tonal.label.color #262626
--tanrei-comp-button-tonal-unselected-container-color sys.color.surface-container-highest #eeeeee
--tanrei-comp-button-tonal-unselected-icon-color comp.button.tonal.unselected.label.color #4b4b4b
--tanrei-comp-button-tonal-unselected-label-color sys.color.on-surface-variant #4b4b4b
--tanrei-comp-button-tonal-unselected-outline-color — #000000 · 0%
--tanrei-comp-button-tonal-unselected-state-layer-color comp.button.tonal.unselected.label.color #4b4b4b
--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

Fixtures

Representaciones canónicas. Todas las plataformas capturan cada fixture con el mismo identificador para poder comparar los resultados.

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

Generado a partir de specs/button.spec.json, tokens/comp/button.tokens.json, design/tokens/

Pautas

Cuándo usarlo

Usa un botón para una acción que ocurre donde está la persona: enviar un formulario, guardar, iniciar un proceso, confirmar un diálogo. En la web, un botón que envía su formulario lo dice con type (consulta En un formulario).

Si activarlo solo lleva a la persona a otro lugar, es un enlace. Cuando ese destino merece el énfasis de un botón, como «Empezar» en una página de inicio o «Ver todo» al final de una lista, conserva el botón y dale href: entonces es un enlace, con el rol, las teclas y el comportamiento en el navegador de un enlace (consulta Un botón con destino es un enlace). Un destino dentro de una frase sigue siendo un enlace de texto corriente. Una acción que pertenece a un texto es un botón de texto después del texto, no una expresión dentro de él: algo dibujado como un enlace que no lo es deja a la persona sin saber qué hará.

Cómo elegir una variante

Las variantes expresan énfasis, y el énfasis es un presupuesto. Gástalo una vez por vista.

Variante Énfasis Úsala para
Filled El más alto La acción más importante de una vista o de un diálogo, y solo una.
Tonal Alto Una acción importante que no debe competir con un botón filled, o la acción principal de una región secundaria.
Elevated Medio Una acción que debe separarse de un fondo recargado o con motivos.
Outlined Medio Acciones del mismo peso junto a un botón filled, como Cancelar.
Text Bajo Las acciones menos urgentes y las acciones en línea de tarjetas, diálogos y barras de herramientas.

destructive no es una variante: se combina con cualquiera de ellas y conserva el énfasis de esa variante (consulta Acciones destructivas).

Un botón sin variant es filled, con una excepción: colocado como acción de un diálogo o de una hoja lateral, toma la variante de ese anfitrión, tonal en el sistema predeterminado, de modo que solo defines una variante en la acción que debe verse distinta. El botón de cierre de cada anfitrión —el de un popover, una hoja lateral, una hoja inferior, un callout, un snackbar o una vista previa de imágenes— es un botón small de solo icono que toma del mismo modo la variante de botón de cierre de su anfitrión, tonal en el sistema predeterminado. Sobre una superficie con color, como un callout de estado o un snackbar invertido, además se dibuja con el color del texto de esa superficie.

Recomendado

  • Escribe las etiquetas como un verbo, o un verbo y un sustantivo, que digan qué va a ocurrir: Desplegar, Guardar borrador, Añadir miembro.
  • Mantén un solo botón filled por vista. Si dos acciones parecen igual de principales, es probable que la vista esté haciendo dos trabajos.
  • Coloca la acción principal donde la esperan quienes usan la plataforma y mantén ese orden en todo el producto.
  • Usa small (32) en barras de herramientas y tablas densas, medium (40) de forma predeterminada y large (56) para ubicaciones pensadas para el tacto o muy destacadas. El área de pulsación es segura en todos los tamaños.
  • Define destructive en una acción que elimina o descarta algo, y elige su variante por su énfasis, como para cualquier otra acción.
  • Haz que un enlace al lugar donde se elimina algo sea un enlace corriente, cuya etiqueta diga adónde lleva. Define destructive en el botón que elimina, en ese lugar.
  • Usa el slot de icono para reforzar una etiqueta. Omite la etiqueta solo cuando el glifo se entienda de forma generalizada (buscar, cerrar, más) y da nombre al botón con label.

Evita

  • No navegues desde el controlador de clic de un botón. Un control con destino es un enlace: define href para que se pueda abrir en una pestaña nueva, copiar y anunciar como enlace.
  • No des href a algo que actúa sobre la página, como Guardar o Eliminar, y no abras una pestaña nueva sin decirlo en targetLabel.
  • No pongas un botón filled en cada fila de una lista. Es preferible usar botones de texto, o una sola acción en la parte superior que se aplique a la selección.
  • No deshabilites un botón como única forma de comunicar un problema de validación. Mantenlo habilitado y explica qué falta cuando se pulse, o mantenlo alcanzable con focusable-when-disabled y di por qué.
  • No deshabilites un botón mientras su acción está en curso. Define busy, para que el foco se quede en él.
  • No uses destructive para dar énfasis, ni en una acción que no destruye nada. Si todas las acciones de una vista son rojas, ninguna destaca.
  • No pongas un enlace en rojo, ni des a un botón href y destructive a la vez. Un enlace solo lleva a otro lugar, así que el botón ignora destructive y dibuja el enlace de su variante.
  • No trunques las etiquetas. Deja que el botón crezca o escribe una etiqueta más corta.
  • No dejes un botón de solo icono sin label: el glifo no es un nombre.
  • No juntes a mano botones estrechos de solo icono borde con borde. Sus objetivos se extienden más allá de sus bordes y se solaparían.

Contenido

Las etiquetas no llevan puntuación final. Procura que tengan una o dos palabras. Escríbelas como cada idioma de tu producto escribe una etiqueta: en inglés, con mayúscula solo en la primera palabra; en japonés, con una forma nominal o de sustantivo verbal, como 保存 o デプロイ, en lugar de una terminación de frase de cortesía.

Accesibilidad

Rol
button (link while href is set)
Etiquetado
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.
Objetivo mínimo
El área de pulsación cumple el tamaño mínimo de objetivo aunque el tamaño visual sea menor. minimum 32px · pointer 44px · spacing 8px · touch 48px

Teclado

Teclas Acción
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.

Notas

  • 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).

Generado a partir de specs/button.spec.json, tokens/sys/measure.tokens.json

De qué se encarga el componente

  • Expone el rol de botón y su estado deshabilitado a la tecnología de apoyo en todas las plataformas. Con href expone en su lugar el rol de enlace, y solo Enter lo activa.
  • Un conmutador es un botón con un estado pulsado, no una casilla de verificación ni un interruptor, y su nombre no cambia con su estado.
  • Un enlace que abre un contexto nuevo lo dice dos veces: con la marca open_in_new para quienes la ven, y con targetLabel como descripción del enlace para quienes no. La marca en sí queda oculta para la tecnología de apoyo.
  • Con label junto a una etiqueta dibujada expone un solo nombre, el label, en un solo control. El texto dibujado no se lee una segunda vez.
  • En la web, Enter en un campo pulsa el botón predeterminado del formulario, un botón predeterminado deshabilitado u ocupado detiene esa tecla, y un botón dentro de un fieldset deshabilitado queda deshabilitado con él.
  • Un botón ocupado, y un botón deshabilitado con focusable-when-disabled, permanecen en el orden del foco y conservan el foco. Comunican a la tecnología de apoyo que ahora no se pueden activar, y un botón ocupado anuncia busy-label una vez.
  • Su área de pulsación cumple el objetivo mínimo incluso en el tamaño pequeño y en el ancho estrecho, sin que el botón se dibuje más grande.
  • Muestra el indicador de foco de separación y anillo para el foco del teclado, sin animación.
  • Sus colores proceden de pares de roles cuyo contraste se verifica en todos los niveles de contraste. El contorno de un botón outlined es la línea fina del sistema predeterminado, que es discreta a propósito con el contraste estándar: lo que identifica el control son la etiqueta y el icono, no su borde. Con contraste medio y alto, la línea fina sube a 3:1 y 4.5:1. Un producto que necesite un borde más marcado define comp.button.outlined.outline.color como sys.color.outline en una capa.
  • Con tamaños de texto mayores, el contenedor crece y la etiqueta nunca se trunca.
  • destructive solo cambia colores. El rol, el nombre, los estados y las teclas son los del mismo botón sin él, porque la web no tiene ningún rol ni estado que diga que una acción es destructiva. En SwiftUI es el rol destructivo propio de la plataforma.

Qué debes hacer tú

  • Escribe una etiqueta que tenga sentido fuera de contexto. «Eliminar proyecto» es mejor que «Eliminar» junto al nombre de un proyecto, porque quien usa un lector de pantalla puede oír el botón por sí solo.
  • Si una acción inicia un proceso largo, define busy con un busy-label, y anuncia el resultado cuando termine. Deshabilitar el botón, por sí solo, no le dice nada a quien usa un lector de pantalla, y le quita el foco.
  • No dependas solo del color para indicar que una acción es destructiva. destructive la dibuja en el color de error, pero quienes no pueden ver ese color o distinguirlo lo saben solo por la etiqueta. Escribe «Eliminar proyecto», no «Aceptar», y di qué se perderá en el diálogo que lo confirma.
  • Da nombre a un botón de enlace según adónde lleva: «Ver factura», no «Haz clic aquí». Cuando target sea new, escribe targetLabel.
  • Donde varios botones dibujen la misma palabra, da a cada uno un label que contenga la palabra y diga sobre qué actúa el botón (consulta Un nombre más largo que la etiqueta).
  • Cuando el botón de envío de un formulario esté deshabilitado, di en la página qué falta todavía. El botón deshabilitado también detiene Enter y, por sí solo, no explica nada.
  • Da nombre a todos los botones de solo icono con label. Un tooltip puede mostrar el mismo texto a quienes usan un puntero, pero nunca sustituye a label.

Código fuente e incidencias en GitHub