Botón de copiar

Categoría: Acciones
Tokens: comp.copy-button
Nivel: Compuesto
Se compone de: Button

Descripción general

Web: tanrei-copy-button; schedule
SwiftUI: TanreiCopyButton; radio_button_unchecked
Jetpack Compose: TanreiCopyButton; radio_button_unchecked
Flutter: TanreiCopyButton; radio_button_unchecked
React Native: CopyButton; radio_button_unchecked

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

Pulsa uno: el glifo se convierte por un momento en una marca de verificación

Usa un botón de copiar junto a algo que una persona va a pegar en otro lugar: un comando, una clave, una dirección, un valor de color. Espera la respuesta del navegador, muestra una marca de verificación (o una marca de error) durante dos segundos y se lo dice con palabras a la tecnología de apoyo. Un bloque de código coloca uno por ti.

Uso

El botón de copiar es un botón de la variante y el tamaño que indiques. No tiene colores ni medidas propios, así que un sistema de diseño que cambia el estilo de Button cambia con él el de todos los botones de copiar.

Las palabras son tuyas. label, copied-label y failed-label no tienen valores predeterminados, porque Tanrei no incluye textos en ningún idioma.

SwiftUI, Compose, Flutter y React Native están planificados: los nombres que figuran junto a cada plataforma al principio de esta página son los que les da la especificación, y todavía no se distribuye nada para ellos.

<!-- De solo icono (el valor predeterminado): recibe su nombre de label. -->
<tanrei-copy-button
  text="npm install @tanrei/web"
  label="Copiar"
  copied-label="Copiado"
  failed-label="No se pudo copiar"
></tanrei-copy-button>

<!-- Con etiqueta: el texto cambia con la forma, y la anchura nunca. -->
<tanrei-copy-button
  icon-only="false"
  variant="tonal"
  text="https://example.com/s/4f2a"
  label="Copiar enlace"
  copied-label="Enlace copiado"
  failed-label="No se pudo copiar"
></tanrei-copy-button>

<!-- Con etiqueta y una anchura que sigue a sus palabras: solo al final de una fila. -->
<tanrei-copy-button
  icon-only="false"
  label-width="fit"
  text="sk-test-0000"
  label="Copiar"
  copied-label="Copiado en el portapapeles"
  failed-label="No se pudo copiar"
></tanrei-copy-button>

<script type="module">
  import '@tanrei/web';

  document.querySelector('tanrei-copy-button').addEventListener('copyfailed', () => {
    // El botón ya ha dicho que no ha podido. Lo que ocurra además es cosa tuya.
  });
</script>

import { CopyButton } from '@tanrei/react';

<CopyButton text={command} label="Copiar" copiedLabel="Copiado" failedLabel="No se pudo copiar" onCopyFailed={() => showHelp()} />

Especificaciones

Los tamaños y las variantes son los de Button

La anchura se reserva para el más largo de los tres textos

Un vecino que no se mueve

Con label-width fit, la anchura sigue a las palabras

Con label-width="fit", la forma con etiqueta es tan ancha como las palabras que muestra. Cuando cambian, su anchura pasa suavemente a la de las nuevas palabras en comp.copy-button.motion.resize-duration, y cambia de inmediato donde el movimiento está reducido. El valor predeterminado sigue siendo widest, porque un control que se mueve justo cuando alguien va a pulsarlo se pulsa por error. Usa fit solo donde no haya detrás del botón nada que la persona pueda pulsar a continuación, como al final de una fila.

El botón tiene tres formas: en reposo (el glifo content_copy), copiado (check) y fallido (error). Muestra la forma de copiado solo después de que el navegador haya confirmado la copia, y vuelve al reposo tras comp.copy-button.confirmation.duration (2 segundos). Una pulsación mientras muestra una confirmación copia y confirma de nuevo.

Nada se mueve cuando cambia la forma. Los tres glifos se dibujan en una misma caja. De forma predeterminada, la forma con etiqueta conserva en todo momento la anchura de su texto más ancho; con label-width="fit", su anchura sigue a sus palabras, como arriba.

El glifo cambia de inmediato, sin movimiento. Los dos segundos son un tiempo para darse cuenta, así que se mantienen donde el movimiento está reducido.

Si el texto cambia mientras el botón muestra «copiado», vuelve al reposo de inmediato: lo que se copió ya no es lo que se copiaría.

Los eventos son copied y copyfailed. No se llaman copy, porque copy es el evento del portapapeles del propio documento.

Anatomía

Parte	Descripción
1 `container`	The button: a Button of the chosen variant and size, drawn from the Button's tokens. It carries the state answer.
2 `icon`	The glyph, in one box whatever it shows: content_copy at rest, check when the text has been copied, error when it could not be.
3 `label` · opcional	The button's text, where it is not icon-only: label at rest, copiedLabel and failedLabel in the two other forms, in a box as wide as the widest of the three (labelWidth widest) or as the one shown (labelWidth fit).

Propiedades

Propiedad	Tipo	Valor predeterminado	Descripción
`text`	`string`	`""`	The text to copy, exactly as it will be pasted. Plain text only.
`label`	`string`	`""`	What the button does, in the product's language ("Copy", "Copy link", "Copy JSON"): the accessible name of the icon-only form and the visible text of the labelled one. Required.
`copiedLabel`	`string`	`""`	What is announced, and shown in the labelled form, when the text has been copied ("Copied"). Required.
`failedLabel`	`string`	`""`	What is announced, and shown in the labelled form, when the platform refuses the copy ("Could not copy"). Required.
`iconOnly`	`boolean`	`true`	True draws the glyph alone, named by label. False draws the glyph and the label as text.
`labelWidth`	`widest` \| `fit`	`"widest"`	How wide the labelled form's text box is. widest, the default, keeps it as wide as the widest of label, copiedLabel and failedLabel at all times, so the button never changes its width and nothing beside it moves (CPY-7). fit makes it as wide as the text it shows, and eases its width to the new text when the form changes (CPY-19): for a button with nothing after it in its row that a person may press next. Ignored while iconOnly is true.
`variant`	`filled` \| `tonal` \| `elevated` \| `outlined` \| `text`	`"text"`	The Button variant it is drawn as. The default, text, is the quiet icon action beside what it copies; a copy that is a view's main action takes another. The values are Button's.
`size`	`small` \| `medium` \| `large`	`"medium"`	The Button size it is drawn at (32 / 40 / 56). The values are Button's.
`disabled`	`boolean`	`false`	Prevents the copy; the button is drawn and exposed as a disabled Button.

Eventos

Evento	Descripción
`copied`	The platform confirmed that the text is on the clipboard; carries the text.
`copyFailed`	The platform refused the copy or has no clipboard to write to; carries the platform's reason where it gives one.

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
`CPY-1`	THE copy button SHALL be drawn as a Button (BTN) of its variant and size, from the Button's own tokens in every state — its container, its glyph, its label, its state layer, its outline and elevation, its disabled form — icon-only with the glyph content_copy WHILE iconOnly is true, and with that glyph leading and label as its text otherwise. It SHALL have no color, shape or measure of its own, SHALL extend its hit area as BTN-5 says, and SHALL draw its glyphs through the platform's icon helper, as a Button does.
`CPY-2`	WHEN the copy button is activated by pointer, touch, Enter, Space or assistive technology THE copy button SHALL ask the platform to put text on the clipboard as plain text, exactly as given; it SHALL NOT read the clipboard, SHALL NOT copy anything but text, SHALL NOT move focus, and SHALL NOT show the copied form before the platform has answered. A second activation before that answer SHALL be ignored.
`CPY-3`	WHEN the platform confirms that the text is on the clipboard THE copy button SHALL take the copied form: the glyph check in place of content_copy, in the same box and the same color, and, WHILE iconOnly is false, copiedLabel in place of label; it SHALL emit copied once, carrying the text, and SHALL return to rest comp.copy-button.confirmation.duration after it took the form.
`CPY-4`	IF the platform refuses the copy or has no clipboard to write to THEN THE copy button SHALL take the failed form — the glyph error in the same box and the same color, and, WHILE iconOnly is false, failedLabel in place of label — SHALL emit copyFailed once, and SHALL return to rest comp.copy-button.confirmation.duration after it took the form. It SHALL NOT select the text, open a dialog or try another way by itself: what else happens is the product's, on that event. IF text is empty WHEN the copy button is activated THEN it SHALL copy nothing and take the failed form, and in debug builds report that there was nothing to copy.
`CPY-5`	WHEN the copy button takes the copied form THE copy button SHALL have assistive technology announce copiedLabel once, politely (after what is being read); WHEN it takes the failed form it SHALL have failedLabel announced once, assertively. Every activation SHALL be announced anew, also when the same words were announced a moment before. The announcement SHALL NOT move keyboard or screen-reader focus, and nothing SHALL be announced on the return to rest.
`CPY-6`	WHILE iconOnly is true THE copy button SHALL be named by label in every form: its name does not change with its form, and the form is told by the announcement of CPY-5. WHILE iconOnly is false THE copy button SHALL be named by the text it shows. THE glyph SHALL be kept from assistive technology in every form.
`CPY-7`	THE copy button SHALL NOT move or resize anything when it changes form, but as CPY-19 says WHILE labelWidth is fit: the three glyphs are drawn in one box; WHILE iconOnly is false and labelWidth is widest the label's box SHALL be as wide as the widest of label, copiedLabel and failedLabel at all times, the shown text at its start, and the button's width and height SHALL be the same in every form; its height SHALL be the same in every form whatever labelWidth is; and the copy button SHALL open no popover, menu or other surface of its own but the confirmation of CPY-18, which takes no room.
`CPY-8`	WHEN the copy button is activated WHILE it is in the copied or the failed form THE copy button SHALL copy again as CPY-2 says and, on the platform's answer, take the form that answer gives, emit its event, announce it (CPY-5) and count the duration from that moment.
`CPY-9`	THE copy button SHALL change its glyph and its text at once, without a motion, in both directions (WHILE labelWidth is fit only the width of the text's box moves, as CPY-19 says); the time of comp.copy-button.confirmation.duration is a time to notice and SHALL NOT be shortened or skipped where motion is reduced. WHEN text changes WHILE the copy button is in the copied form THE copy button SHALL return to rest at once: what was copied is no longer what would be.
`CPY-10`	WHILE disabled is true THE copy button SHALL be drawn and exposed as a disabled Button, SHALL copy nothing and SHALL emit nothing; WHEN it becomes disabled WHILE in the copied or the failed form it SHALL return to rest at once.
`CPY-11`	WHILE the system's icon set cannot yet draw a glyph of the copy button (its font is still loading) THE copy button SHALL draw nothing in that glyph's place, never the glyph's name as text, SHALL keep the glyph's box, and SHALL draw the glyph once the set can; label, copiedLabel and failedLabel SHALL still reach assistive technology.
`CPY-12`	WHEN the copy button is pressed by pointer, touch, Enter or Space THE copy 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.
`CPY-13`	WHILE pressed THE copy 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 comp.button.motion.state-easing, fades over the state duration of its size (comp.button.motion.state-duration.small, .medium or .large) with comp.button.motion.state-easing once the press has ended and press-hold has passed, and appears whole where motion is reduced.
`CPY-14`	THE copy 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.
`CPY-15`	THE copy 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 copy button is shown THE copy button SHALL draw itself for the new direction at once, without a motion of its own, keeping its form, the time left before it returns to rest and its focus.
`CPY-16`	WHERE the layout direction is right-to-left THE copy button SHALL place its glyph and its label as a Button places a leading icon and a label (BTN-11), and SHALL draw each of its glyphs mirrored left to right exactly when the system's icon set marks that glyph's name as mirrored: the icon helper mirrors the glyph inside its own box, changing neither its place, size, color and fill. THE copy button SHALL NOT mirror a glyph itself.
`CPY-17`	WHILE label, copiedLabel or failedLabel is empty THE copy button SHALL still render and copy, and in debug builds report which is missing: an icon-only button without label has no accessible name, unless the product gives it a name of its own on the element — aria-label, or aria-labelledby naming an element — which it then exposes as its accessible name and does not report missing. WHILE label is not empty THE copy button SHALL expose the name CPY-6 says, over a name the product gives it on the element (aria-label or aria-labelledby). WHEN variant or size names a value the Button does not have in the active design system THE copy button SHALL be drawn with its own default for that prop, and in debug builds report the unknown value.
`CPY-18`	WHEN the copy button takes the copied or the failed form WHILE iconOnly is true THE copy button SHALL show copiedLabel or failedLabel as a plain Tooltip (TIP) of its button — drawn from the Tooltip's own tokens and placed as it places itself, at the top by default — for as long as the form lasts, and SHALL close it at the return to rest; each answer of CPY-8 SHALL show it anew. It SHALL take no focus and no room, move nothing, and SHALL NOT open or close on hover, focus or a long press; it SHALL be closed by Escape and by another tooltip that opens, as any tooltip is, and SHALL be kept from assistive technology, which hears the words once, from the announcement of CPY-5. WHILE iconOnly is false THE copy button SHALL show no such bubble: its label says it.
`CPY-19`	WHILE iconOnly is false and labelWidth is fit THE copy button SHALL make the label's box as wide as the text it shows, and its button as wide as that box and its glyph make it, the text on one line; WHEN the shown text changes — the form changes, or the words of the form shown do — THE copy button SHALL change the box's width from the width it has to the new text's over comp.copy-button.motion.resize-duration with comp.copy-button.motion.resize-easing, keeping its height, its glyph and the start of its text in place and clipping the text at the box's end while the box is narrower than it, and SHALL change the width at once where motion is reduced. THE copy button SHALL take its first width, and a width that changes because the text's face has arrived, at once. A change of form during the motion SHALL continue from the width reached.
`CPY-20`	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 copy 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 copy button is invalid — except those the copy 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 copy button SHALL take it off that element. WHEN the product sets an aria- attribute the copy button owns THE copy 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-copy-button`	`TanreiCopyButton`	`TanreiCopyButton`	`TanreiCopyButton`	`CopyButton`
`text` · Propiedad	`text`	`text`	`text`	`text`	`text`
`label` · Propiedad	`label`	`label`	`label`	`label`	`label`
`copiedLabel` · Propiedad	`copiedLabel`	`copiedLabel`	`copiedLabel`	`copiedLabel`	`copiedLabel`
`failedLabel` · Propiedad	`failedLabel`	`failedLabel`	`failedLabel`	`failedLabel`	`failedLabel`
`iconOnly` · Propiedad	`iconOnly`	`iconOnly`	`iconOnly`	`iconOnly`	`iconOnly`
`labelWidth` · Propiedad	`labelWidth`	`labelWidth`	`labelWidth`	`labelWidth`	`labelWidth`
`variant` · Propiedad	`variant`	`variant`	`variant`	`variant`	`variant`
`size` · Propiedad	`size`	`size`	`size`	`size`	`size`
`disabled` · Propiedad	`disabled`	`disabled`	`enabled`	`enabled`	`disabled`
`copied` · Evento	`copied`	`onCopied`	`onCopied`	`onCopied`	`onCopied`
`copyFailed` · Evento	`copyfailed`	`onCopyFailed`	`onCopyFailed`	`onCopyFailed`	`onCopyFailed`
Notas	`<tanrei-copy-button text="…" label="Copy" copied-label="Copied" failed-label="Could not copy">`, with `icon-only="false"` for the labelled form. Its shadow root holds a `<tanrei-button>` (so every Button token and state applies unchanged) and one visually hidden live region: `role="status"` for the copied announcement and `role="alert"` for the failed one, emptied and set again on each activation so the same words are spoken twice (CPY-5). CPY-2 is `navigator.clipboard.writeText(text)`, which needs a secure context and the person's activation; where the API is missing or the promise rejects, that is CPY-4 — no `document.execCommand` fallback. The events are named `copied` and `copyfailed`, not `copy`, because `copy` is the document's own clipboard event and bubbles. CPY-7: the three labels are stacked in one grid cell, two of them `visibility: hidden`. CPY-19 (`label-width="fit"`): the box's `inline-size` is set to the shown text's measured width and transitions over the resize tokens (none under `prefers-reduced-motion: reduce`), clipped at its end with `overflow-x: clip`; a `ResizeObserver` on the three texts takes a new face's widths at once. The timer is a `setTimeout` of the token's value read from the custom property, cleared on a new activation and on disconnect.	`TanreiCopyButton(text:, label:, copiedLabel:, failedLabel:, iconOnly:, variant:, size:)` over `TanreiButton`. Writes `UIPasteboard.general.string` (`NSPasteboard.general` on macOS), which does not fail; the failed form is reached only where no pasteboard exists (a preview). Announces with `AccessibilityNotification.Announcement`, at high priority for the failed form. `disabled` is the environment's `isEnabled`. It owes labelWidth (CPY-19) as well: fit, a width that follows the shown text, eased over comp.copy-button.motion.resize-duration and at once where motion is reduced.	`TanreiCopyButton(text, label, copiedLabel, failedLabel, iconOnly, variant, size, enabled)` over `TanreiButton`, writing through the platform clipboard of the composition. Android 13 and later show the system's own confirmation of a copy: there the copy button still changes its glyph and leaves the announcement of copiedLabel to the system, so the person is told once; the README says so. Earlier versions announce through a polite live region on the button's semantics. It owes labelWidth (CPY-19) as well: fit, a width that follows the shown text, eased over comp.copy-button.motion.resize-duration and at once where motion is reduced.	`TanreiCopyButton(text: …, label: …, copiedLabel: …, failedLabel: …)` over `TanreiButton`. `Clipboard.setData(ClipboardData(text: text))`; a `PlatformException` is CPY-4. Announces with `SemanticsService.announce`, assertively for the failed form. On Android 13 and later the same rule as Compose's applies. It owes labelWidth (CPY-19) as well: fit, a width that follows the shown text, eased over comp.copy-button.motion.resize-duration and at once where motion is reduced.	`<CopyButton text="…" label="Copy" copiedLabel="Copied" failedLabel="Could not copy" />` over `Button`. React Native has no clipboard in its core: the package takes the app's writer (`write={(text) => Clipboard.setStringAsync(text)}`) or a provider set once at the app's root, and a missing writer is CPY-4 with a debug report. Which of the two, and whether a clipboard module becomes an optional peer dependency, is the platform agent's to propose. Announces with `AccessibilityInfo.announceForAccessibility`. Follows the app's direction where an ancestor's is not known. It owes labelWidth (CPY-19) as well: fit, a width that follows the shown text, eased over comp.copy-button.motion.resize-duration and at once where motion is reduced.

Tokens

Token	Alias de	Valor resuelto (claro)
`--tanrei-comp-copy-button-confirmation-duration`	—	2000ms
`--tanrei-comp-copy-button-motion-resize-duration`	`sys.motion.role.resize.default`	300ms
`--tanrei-comp-copy-button-motion-resize-easing`	`sys.motion.easing.spatial`	cubic-bezier(0.2, 0, 0, 1)

Fixtures

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

icon

text: npm install @tanrei/web label: Copy copiedLabel: Copied failedLabel: Could not copy

icon-small

text: npm install @tanrei/web label: Copy copiedLabel: Copied failedLabel: Could not copy size: small

icon-large

text: npm install @tanrei/web label: Copy copiedLabel: Copied failedLabel: Could not copy size: large

icon-tonal

text: #30a3f0 label: Copy color copiedLabel: Copied failedLabel: Could not copy variant: tonal

icon-outlined

text: #30a3f0 label: Copy color copiedLabel: Copied failedLabel: Could not copy variant: outlined

icon-elevated

text: #30a3f0 label: Copy color copiedLabel: Copied failedLabel: Could not copy variant: elevated

icon-filled

text: #30a3f0 label: Copy color copiedLabel: Copied failedLabel: Could not copy variant: filled

icon-disabled

text: npm install @tanrei/web label: Copy copiedLabel: Copied failedLabel: Could not copy disabled: true

labelled

text: { "name": "acme" } label: Copy JSON copiedLabel: Copied failedLabel: Could not copy iconOnly: false

labelled-tonal

text: https://example.com/s/4f2a label: Copy link copiedLabel: Link copied failedLabel: Could not copy iconOnly: false variant: tonal

labelled-filled-small

text: https://example.com/s/4f2a label: Copy link copiedLabel: Link copied failedLabel: Could not copy iconOnly: false variant: filled size: small

labelled-outlined-large

text: https://example.com/s/4f2a label: Copy link copiedLabel: Link copied failedLabel: Could not copy iconOnly: false variant: outlined size: large

labelled-long-confirmation

text: sk-test-0000 label: Copy copiedLabel: Copied to the clipboard failedLabel: Could not copy iconOnly: false variant: outlined

labelled-fit

text: sk-test-0000 label: Copy copiedLabel: Copied to the clipboard failedLabel: Could not copy iconOnly: false labelWidth: fit variant: outlined

labelled-disabled

text: sk-test-0000 label: Copy key copiedLabel: Copied failedLabel: Could not copy iconOnly: false disabled: true

icon-rtl

text: https://example.com/s/4f2a label: نسخ copiedLabel: تم النسخ failedLabel: تعذر النسخ direction: rtl

labelled-rtl

text: https://example.com/s/4f2a label: نسخ الرابط copiedLabel: تم النسخ failedLabel: تعذر النسخ iconOnly: false variant: tonal direction: rtl

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

Qué dibuja la web de otra manera

La copia usa navigator.clipboard.writeText. Necesita una página segura (HTTPS o localhost) y una pulsación de la persona. Donde el navegador no tiene portapapeles o se niega, el botón toma la forma de fallido. No hay ningún mecanismo alternativo.
Los dos eventos se propagan hacia arriba y no cruzan un shadow root.

Pautas

De solo icono o con etiqueta

Forma	Qué muestra	Úsalo cuando
De solo icono	El glifo y, mientras muestra la marca de verificación, las palabras en una pequeña burbuja encima	Junto a lo que copia: un comando, un bloque de código, un valor en una fila
Con etiqueta	El glifo y las palabras, que cambian con la forma	La copia es una de las acciones de la vista, o las palabras importan a todo el mundo

Evita

No muestres el botón solo al pasar el cursor. Así no se puede encontrar con el tacto.
No abras un tooltip ni un snackbar propios por una copia correcta. El botón ya la confirma, también con palabras.
No lo uses para copiar nada que no sea texto.

Accesibilidad

Rol: button
Etiquetado: The icon-only form is named by label, which is required, in every form: the name does not change when the glyph does. The labelled form is named by the text it shows. The result is announced through a live region: copiedLabel politely, failedLabel assertively (CPY-5).
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 copy button.
`Enter` / `Space`	Copies the text and confirms it; focus stays on the button.

Notas

The target is the Button's (BTN-5): at least sys.target.touch for touch and sys.target.pointer for a fine pointer on both axes, whatever size is drawn.
The confirmation is a status message (WCAG 4.1.3): it reaches assistive technology without moving focus. The glyph change alone would say nothing to a person who cannot see it, and a changed name is not announced on every platform, which is why the icon-only form's name stays and the live region speaks.
The confirmation is not given by color: the glyph changes shape (check, error) in the Button's own icon color, and the words are announced. No success or error color is used.
The confirmation returns by itself after comp.copy-button.confirmation.duration. Nothing a person must act on is in it, so no timing control is needed (WCAG 2.2.1); a failure a person must act on is the product's to show, on copyFailed, in something that stays.
A sighted person using the icon-only form sees the check and, for as long as it shows, the same words in a bubble drawn as a plain Tooltip (CPY-18): the change of a glyph alone can be missed by a person who does not know the check, or who reads the page magnified. The bubble is not read a second time: the announcement of CPY-5 is the one assistive technology hears.
The labelled form's visible text is its name (WCAG 2.5.3) in every form. By default (labelWidth widest) its width is reserved for the widest of the three texts, so neighbouring controls do not move under a pointer about to press them (CPY-7). labelWidth fit lets the width follow the text — a change the person asked for by pressing, eased over a short motion and at once where motion is reduced (WCAG 2.3.3) — and is for a button that nothing a person may press next stands after; its own box still keeps the minimum target in every form.
Copying needs the platform's permission and, on the web, a secure page and a press by the person: a copy asked for by script alone may be refused, and is then a failure (CPY-4).

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

De qué se encarga el componente

Es un botón, con el indicador de foco de Button, su objetivo mínimo y sus teclas (Enter y Espacio).
La forma de solo icono recibe su nombre de label en todas las formas. El nombre no cambia cuando cambia el glifo.
El resultado se anuncia mediante una región activa: copied-label de forma cortés y failed-label de forma asertiva, en cada pulsación y sin mover el foco.
La forma de solo icono muestra también esas palabras en una burbuja dibujada como un tooltip plain, mientras dura la confirmación. No toma el foco, no se lee una segunda vez y Escape la cierra.
La confirmación es una figura y unas palabras, no un color.
En un diseño de derecha a izquierda, el glifo de copiar se refleja, como indica el conjunto de iconos. La marca de verificación y la marca de error, no.
La forma con etiqueta conserva su anchura de forma predeterminada, así que nada se mueve bajo un puntero a punto de pulsar. Con label-width="fit", la anchura pasa suavemente a la de las nuevas palabras, y cambia de inmediato donde el movimiento está reducido.

Qué debes hacer tú

Da las tres etiquetas, en el idioma de tu producto. Un botón de solo icono sin label no tiene nombre accesible.
Ocúpate tú de lo que sigue a un fallo cuando la persona no deba perder el texto.

Código fuente e incidencias en GitHub