Casilla de verificación
Permite activar o desactivar una elección independiente, mostrar una elección principal que solo está activada en parte y señalar una elección obligatoria que ha quedado sin hacer.
- Categoría
- Selección
- Tokens
comp.checkbox- Nivel
- Base
- Se usa en
- Checkbox group
- Web
tanrei-checkboxschedule - SwiftUI
TanreiCheckboxschedule - Jetpack Compose
TanreiCheckboxschedule - Flutter
TanreiCheckboxschedule - React Native
Checkboxschedule
Generado a partir de docs/status/status.json, specs/checkbox.spec.json
Sin marcar, marcada e indeterminada
La revisión que dio a la casilla de verificación sus tamaños actuales y los glifos del conjunto de iconos solo cambió su aspecto y su movimiento, así que todos los ejemplos siguientes están al día. La web la dibuja y la anima como dice la especificación. SwiftUI, Compose, Flutter y React Native van rezagados: ya adoptan los nuevos tamaños, pero siguen dibujando la marca de verificación y el guion como marcas propias y animándolos a su manera hasta que se pongan al día. Dos refinamientos posteriores están por ahora solo en la web: la marca de verificación y el guion tienen un peso propio, más grueso, y el contorno y el relleno del recuadro se dibujan como una sola forma.
<tanrei-checkbox label="Enviarme novedades por correo"></tanrei-checkbox>
<tanrei-checkbox checked label="Enviarme novedades por correo"></tanrei-checkbox>
<!-- Una casilla principal cuyas casillas secundarias están mezcladas. Al activarla se marca y se borra indeterminate. -->
<tanrei-checkbox indeterminate label="Seleccionar todo"></tanrei-checkbox>
<!-- En un formulario envía value ("on" de forma predeterminada) con name mientras está marcada, y respeta required. -->
<form>
<tanrei-checkbox name="terms" required label="Acepto las condiciones"></tanrei-checkbox>
</form>
<script type="module">
import '@tanrei/web/components/checkbox';
// El elemento cambia su propio checked antes de emitir change.
document.querySelector('tanrei-checkbox').addEventListener('change', (e) => save(e.detail.checked));
const terms = document.querySelector('[name="terms"]');
terms.error = submitted && !terms.checked;
</script>import { Checkbox } from '@tanrei/react';
<Checkbox checked={updates} label="Enviarme novedades por correo" onChange={(e) => setUpdates(e.detail.checked)} />
<Checkbox checked={all} indeterminate={some && !all} label="Seleccionar todo" onChange={(e) => selectAll(e.detail.checked)} />
<Checkbox checked={terms} error={submitted && !terms} label="Acepto las condiciones" onChange={(e) => setTerms(e.detail.checked)} />import Tanrei
TanreiCheckbox("Enviarme novedades por correo", isOn: $updates)
// isIndeterminate sale de tus datos. Al activarla, isOn pasa a true; después tus datos lo borran.
TanreiCheckbox("Seleccionar todo", isOn: $allSelected, isIndeterminate: someSelected)import androidx.compose.ui.state.ToggleableState
import io.github.chnotchy.tanrei.components.TanreiCheckbox
TanreiCheckbox(checked = updates, onCheckedChange = { updates = it }, label = "Enviarme novedades por correo")
// Una casilla principal que puede estar activada en parte recibe un ToggleableState. Quien la llama calcula el estado siguiente:
// al activar una casilla indeterminada pasa a On.
TanreiCheckbox(
state = allState,
onClick = { selectAll(allState != ToggleableState.On) },
label = "Seleccionar todo",
)
TanreiCheckbox(
checked = terms,
onCheckedChange = { terms = it },
label = "Acepto las condiciones",
isError = submitted && !terms,
)import 'package:tanrei/tanrei.dart';
TanreiCheckbox(
value: updates,
onChanged: (bool value) => setState(() => updates = value), // null la deshabilita
label: 'Enviarme novedades por correo',
);
// Con tristate, un valor nulo es indeterminado. Al activarla se llama a onChanged(true).
TanreiCheckbox(
value: allSelected, // bool?: null mientras solo algunas están seleccionadas
tristate: true,
onChanged: (bool value) => setState(() => selectAll(value)),
label: 'Seleccionar todo',
);
TanreiCheckbox(
value: terms,
onChanged: (bool value) => setState(() => terms = value),
isError: submitted && !terms,
label: 'Acepto las condiciones',
);import { Checkbox } from '@tanrei/react-native';
<Checkbox value={updates} onValueChange={setUpdates} label="Enviarme novedades por correo" />
<Checkbox value={all} indeterminate={some && !all} onValueChange={selectAll} label="Seleccionar todo" />
<Checkbox value={terms} onValueChange={setTerms} error={submitted && !terms} label="Acepto las condiciones" />Condiciones, error y estado deshabilitado
En el sistema predeterminado, la casilla de verificación es un recuadro de 18 con un contorno de 2 y una esquina de 2, sobre una capa de estado redonda de 40, con un objetivo de 48. Con etiqueta mide 40 de alto. La marca de verificación y el guion son los glifos check y remove del conjunto de iconos del sistema, dibujados a 20 sobre el recuadro. Tienen un peso propio, más grueso que el de los demás iconos del sistema: 500 en el sistema predeterminado, donde los iconos son de 300. A este tamaño, un trazo con el peso de los iconos mide alrededor de un píxel de ancho y cuesta verlo, así que la marca es más gruesa mientras su tamaño sigue igual. Un preajuste conserva su propio peso de icono. La casilla de verificación no dibuja ninguna marca propia, de modo que un sistema de diseño que cambia su conjunto de iconos cambia estos glifos junto con todos los demás. El contorno y el relleno del recuadro son una sola forma: nada de lo que hay detrás del recuadro se ve entre ellos con ningún nivel de zoom ni densidad de pantalla, y un recuadro marcado es de un solo color uniforme desde su borde hasta su marca. Con cupertino, la casilla de verificación conserva su recuadro más pequeño y un glifo de 16.
Cuando la casilla de verificación cambia, el recuadro, el contorno y el glifo cambian de color, y un glifo que aparece lo hace con un fundido mientras crece desde la mitad de su tamaño, y se asienta tras sobrepasarlo ligeramente. Un glifo que se va se desvanece y se encoge del mismo modo, y entre marcada e indeterminada la marca de verificación se va mientras llega el guion. Solo se mueve el glifo: el recuadro nunca cambia de tamaño ni de posición. Una casilla de verificación que se dibuja por primera vez muestra su condición de inmediato, así que una página que se carga con casillas marcadas no las anima. Cuando el movimiento está reducido, la nueva condición se dibuja completa en el fotograma siguiente.
Anatomía
Anatomía
unselected, tal como lo dibuja el paquete web.| Parte | Descripción |
|---|---|
1 container | The round state layer behind the box (Material Design 3's 40). It carries hover, focus and press and is invisible at rest. |
2 box | The small square that shows the condition (Material Design 3's 18, with a 2 corner): empty with an outline when unchecked, filled when checked or indeterminate. |
3 outline | The border of the box, drawn inside its edge. The fill sits inside the border, so a translucent fill and border never overlap; where the two meet they are drawn as one shape, so nothing behind the box shows between them. |
4 mark | The glyph check (checked) or the glyph remove (indeterminate) of the system's icon set, centered on the box and drawn with the icon set's family, fill and optical size at the mark's own weight, comp.checkbox.mark.weight: in the default system heavier than the system's icons, because the mark is a thin stroke on a small filled box and is what tells checked from indeterminate. The checkbox draws no mark of its own; a system that wants another check chooses another icon set. The glyph is decorative: the condition is announced from the state. |
5 label · opcional | The visible text that names the choice. A click on it toggles the checkbox. |
6 focus-ring | Gap-then-ring indicator shown for keyboard focus, following the box's shape. |
Medidas
Medidas
| Longitud | Token | Valor (px) |
|---|---|---|
container size | tanrei.comp.checkbox.container.size | 40 |
box size | tanrei.comp.checkbox.box.size | 18 |
mark size | tanrei.comp.checkbox.mark.size | 20 |
unselected, tal como lo dibuja el paquete web.Propiedades
| Propiedad | Tipo | Valor predeterminado | Descripción |
|---|---|---|---|
checked | boolean | false | Whether the choice is on. |
indeterminate | boolean | false | Shows the choice as partly on (a parent whose children are mixed). Wins over checked for what is drawn and announced; activation clears it. |
error | boolean | false | Marks the choice as invalid (a required choice left unmade). Draws the error form of the condition and is exposed as invalid; the message itself belongs to the surrounding form. |
disabled | boolean | false | Prevents interaction and removes the checkbox from the focus order. |
readOnly | boolean | false | Shows the choice and keeps it: the checkbox can be focused and read and is submitted with its form, but the person cannot switch it. Drawn as an enabled checkbox, without the hover and press answers (CHK-24). |
label | string | "" | The text that names the choice: drawn next to the box and used as the accessible name. |
labelHidden | boolean | false | Draws no visible label but keeps label as the accessible name (a row-selection checkbox in a table whose row already says what it is). |
Eventos
| Evento | Descripción |
|---|---|
change | The user switched the checkbox; carries the new value of checked (indeterminate is then false). |
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 |
|---|---|
CHK-1 | WHEN the user activates the checkbox by pointer, touch, Space, assistive technology or a click on its label THE checkbox SHALL switch checked and emit change exactly once with the new value; Enter SHALL activate it only on a platform whose convention activates any focused control with Enter (Android, tvOS), and SHALL NOT on the web, where Enter submits the form. |
CHK-2 | WHEN the user activates the checkbox while indeterminate is true THE checkbox SHALL set checked to true, clear indeterminate, and emit change with true. |
CHK-3 | WHILE disabled is true THE checkbox SHALL NOT change or emit change, SHALL NOT be focusable, SHALL ignore clicks on its label and SHALL expose the disabled state to assistive technology. |
CHK-4 | THE checkbox SHALL draw the condition its props select: indeterminate when indeterminate is true, otherwise selected when checked is true, otherwise unselected; and the error- form of that condition while error is true. |
CHK-5 | WHILE hovered, keyboard-focused or pressed THE checkbox SHALL render its container, box, mark, outline, label and opacity from the component tokens of its condition in the highest-precedence active state, with precedence pressed over focused over hovered; focus gained by pointer or touch SHALL NOT select the focused state. A part the interaction states recolor changes over the component's state motion, as the container does; only a change of condition uses the selection motion. |
CHK-6 | WHEN the checkbox receives keyboard focus THE checkbox SHALL show the focus ring around its box without animation; focus gained by pointer or touch SHALL NOT show it. |
CHK-7 | WHERE the visual size is below the minimum target THE checkbox 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. The visible label SHALL be part of the hit area as well. |
CHK-8 | WHILE disabled is true THE checkbox SHALL render its container, box, mark, outline, label and opacity from the disabled component tokens of its condition. |
CHK-9 | WHEN the checkbox is pressed by pointer, touch or Space, or by Enter where Enter activates it (Android, tvOS; never on the web, where Enter submits the form) THE checkbox 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. |
CHK-10 | WHILE pressed THE checkbox 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; a press outside the container (on the label) grows it from the container's center); 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; box, mark, outline, label, 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.checkbox.motion.feedback-duration with motion.state-easing, fades over motion.state-duration with motion.state-easing once the press has ended and press-hold has passed, and appears whole where motion is reduced. |
CHK-11 | THE checkbox SHALL ease its container and box 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. |
CHK-12 | THE checkbox SHALL draw a box of side comp.checkbox.box.size with corners comp.checkbox.box.shape, centered in a round container of diameter comp.checkbox.container.size; its outline of width comp.checkbox.outline.width SHALL lie inside the box's edge and its fill inside the outline, never under it. Its mark SHALL be a glyph of the system's icon set, check while selected and remove while indeterminate, and SHALL NOT be drawn while unselected: centered on the box at comp.checkbox.mark.size, with sys.icon.family.selected, sys.icon.fill.selected, the weight comp.checkbox.mark.weight (not sys.icon.weight) and an optical size clamped between sys.icon.optical-size.min and sys.icon.optical-size.max, not clipped by the box, and hidden from assistive technology. THE checkbox SHALL draw no mark of its own (no path, shape or character of its own for the check or the dash). The weight SHALL change the stroke of the glyph only: the glyph box stays comp.checkbox.mark.size, and the box, the container and the place of the glyph are the same at every weight. |
CHK-13 | WHEN the condition changes after the checkbox was first drawn THE checkbox SHALL change the box, outline and mark colors over comp.checkbox.motion.selection-duration with comp.checkbox.motion.selection-easing; a glyph that appears SHALL fade in over the same duration and curve while growing about the box's center from comp.checkbox.motion.mark-enter-scale of its size to its full size over comp.checkbox.motion.mark-scale-duration with comp.checkbox.motion.mark-scale-easing, and a glyph that goes SHALL fade out and shrink to comp.checkbox.motion.mark-enter-scale the same way; between checked and indeterminate the check goes and the dash appears at the same time. A change of error alone SHALL only recolor, and the box and container SHALL NOT change size or move. |
CHK-14 | THE checkbox SHALL expose the role checkbox with the state checked, not checked or mixed (mixed while indeterminate is true), and SHALL expose the invalid state while error is true. |
CHK-15 | WHILE label is not empty and labelHidden is false THE checkbox SHALL draw label at the inline end of the container, comp.checkbox.label.gap away, in comp.checkbox.label.typescale, wrapping rather than truncating, the control centered on the label's first line; right-to-left layouts SHALL mirror the order. |
CHK-16 | WHILE labelHidden is true THE checkbox SHALL draw no label and SHALL still expose label as its accessible name; WHILE label is not empty, or a Field that frames it gives it a label, THE checkbox SHALL expose that label as its accessible name, over a name the product gives it on the element (aria-label or aria-labelledby); WHILE label is empty and the product gives the checkbox a name of its own on the element — aria-label, or aria-labelledby naming an element — THE checkbox SHALL expose that name as its accessible name; WHILE label is empty and the product gives it none THE checkbox SHALL still render, and in debug builds report that it has no accessible name. |
CHK-17 | WHERE motion is reduced THE checkbox SHALL draw the new condition whole in the first frame after the change: the box, outline and mark colors of the new condition, the new glyph at its full size and full opacity, and the old glyph gone, with no frame in between; a change that arrives while a selection motion is running SHALL end that motion in the same frame. The change SHALL be neither delayed nor skipped. |
CHK-18 | WHEN the condition changes again before the selection motion of CHK-13 has ended THE checkbox SHALL move from what it draws at that moment to the latest condition, never first jumping to the end of the earlier change, and SHALL end on the latest condition's colors and glyph alone. |
CHK-19 | IF the icon set cannot draw the glyph yet (its font is still loading or failed to load) THE checkbox SHALL draw nothing in the glyph's place, never the glyph's name as text, SHALL still draw the box, its fill and its outline and expose its state, and SHALL show the glyph once the icon set can draw it, without the selection motion. |
CHK-20 | THE checkbox 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 checkbox is shown THE checkbox SHALL draw itself for the new direction at once, without a motion of its own, keeping its selection and its focus. |
CHK-21 | THE checkbox 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 checkbox SHALL still place the label and align its lines by the layout direction, not by the text's own. |
CHK-22 | THE checkbox SHALL draw the outline and the fill of its box as one shape: every point inside the box's outer edge SHALL be painted by the outline, by the fill, or, along the line where the two meet, by both in shares that add up to the whole, so that nothing behind the box shows between them at any zoom, display density or fractional position, in any frame of the selection motion (CHK-13), and so that a box whose outline and fill have the same color is that one color, evenly, from its edge to its mark; the two SHALL NOT be painted over one another either (CHK-12), so that a translucent outline or fill is nowhere darker than its token. |
CHK-23 | WHILE the checkbox stands in a checkbox group THE checkbox SHALL take its checked from the group's value and from the value the group reads from it (CKG-2), SHALL be disabled WHILE the group is (CKG-6), SHALL have its switching by the person reported by the group's change and by no event of its own that a listener on the group would receive as well (CKG-4), and WHERE the platform has forms SHALL submit nothing of its own, whatever name it carries (CKG-8). WHERE the checkbox stands in no checkbox group it SHALL be as it is anywhere — in a field, in a field group, in a table's row or alone: checked is its own, change is its own, and on the web it submits its own entry under its own name. |
CHK-24 | WHILE readOnly is true and disabled is false THE checkbox SHALL stay focusable and in the focus order; SHALL NOT change checked or indeterminate, and SHALL NOT emit change, on any activation — pointer, touch, Space, Enter where Enter activates it, assistive technology, a click on its label or a click dispatched on the element; SHALL expose the read-only state to assistive technology beside its checked, not checked or mixed state; WHERE the platform has forms SHALL be submitted with its form as it is drawn, and SHALL NOT report a missing value to the form's own validation, because the person cannot give one; and SHALL be drawn from the resting component tokens of its condition — the enabled ones, never the disabled ones — and SHALL show no hovered and no pressed state, under any pressed feedback (no overlay, no ripple, no dim), while keyboard focus still selects the focused state and shows the focus ring (CHK-5, CHK-6). The product may still set checked and indeterminate, which then take the selection motion (CHK-13). WHILE disabled is true as well, disabled wins (CHK-3). |
CHK-25 | 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 checkbox 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 checkbox is invalid — except those the checkbox owns (aria-checked, 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 checkbox SHALL take it off that element. WHEN the product sets an aria- attribute the checkbox owns THE checkbox 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-checkbox | TanreiCheckbox | TanreiCheckbox | TanreiCheckbox | Checkbox |
checked · Propiedad | checked | isOn | checked | value | value |
indeterminate · Propiedad | indeterminate | isIndeterminate | state | tristate | indeterminate |
error · Propiedad | error | isError | isError | isError | error |
disabled · Propiedad | disabled | disabled | enabled | onChanged | disabled |
readOnly · Propiedad | readOnly | readOnly | readOnly | readOnly | readOnly |
label · Propiedad | label | title | label | label | label |
labelHidden · Propiedad | labelHidden | labelsHidden | labelHidden | labelHidden | labelHidden |
change · Evento | change | isOn | onCheckedChange | onChanged | onValueChange |
| Notas | Form-associated (ElementInternals): it takes part in a form with name and value (default "on"), resets with it, and honours required as the native checkbox does; those three are web attributes, not spec props. It switches its own checked before firing change (and input), as a native checkbox does. labelHidden is the label-hidden attribute. Inside a tanrei-checkbox-group (found with closest() when it connects) it takes checked from the group, ignores name and required, submits nothing and fires no input or change of its own (CHK-23); a value attribute it does not carry is no value there, not "on". readOnly is the readonly attribute (HTML's name; the native attribute does not apply to a checkbox, so the element cancels the activation itself and writes aria-readonly on its native checkbox). | Toggle idiom: TanreiCheckbox(_ title:, isOn: Binding<Bool>, isIndeterminate: Bool = false); activation writes the binding, which is the change event. isIndeterminate is a value the caller derives from its data (a select-all is derived state), so activation sets isOn to true and the caller's data clears it. disabled follows .disabled(_:); labelsHidden follows .labelsHidden(). | Two overloads, as Compose's own: TanreiCheckbox(checked, onCheckedChange, …) and, for a parent that can be indeterminate, TanreiCheckbox(state: ToggleableState, onClick, …) in the TriStateCheckbox idiom, where the caller computes the next state (CHK-2 says it is On). enabled is the inverse flag; a null onCheckedChange draws a checkbox that only displays. | Flutter idiom: value is bool?; with tristate: true a null value is indeterminate. Unlike Flutter's Material checkbox, which cycles null → false, activation from null calls onChanged(true) (CHK-2). A null onChanged disables it. | Controlled, in React Native's value / onValueChange idiom: the caller sets value from the callback. |
Tokens
| Token | Alias de | Valor resuelto (claro) |
|---|---|---|
--tanrei-comp-checkbox-box-shape | — | 2px |
--tanrei-comp-checkbox-box-size | — | 18px |
--tanrei-comp-checkbox-container-shape | sys.shape.corner.full | 9999px |
--tanrei-comp-checkbox-container-size | — | 40px |
--tanrei-comp-checkbox-disabled-container-shape | — | 9999px |
--tanrei-comp-checkbox-disabled-opacity | — | 1 |
--tanrei-comp-checkbox-error-indeterminate-box-color | sys.color.error | |
--tanrei-comp-checkbox-error-indeterminate-container-color | — | |
--tanrei-comp-checkbox-error-indeterminate-disabled-box-color | — | |
--tanrei-comp-checkbox-error-indeterminate-disabled-container-color | — | |
--tanrei-comp-checkbox-error-indeterminate-disabled-label-color | — | |
--tanrei-comp-checkbox-error-indeterminate-disabled-mark-color | — | |
--tanrei-comp-checkbox-error-indeterminate-disabled-outline-color | — | |
--tanrei-comp-checkbox-error-indeterminate-disabled-state-layer-color | — | |
--tanrei-comp-checkbox-error-indeterminate-focused-box-color | — | |
--tanrei-comp-checkbox-error-indeterminate-focused-container-color | — | |
--tanrei-comp-checkbox-error-indeterminate-focused-label-color | — | |
--tanrei-comp-checkbox-error-indeterminate-focused-mark-color | — | |
--tanrei-comp-checkbox-error-indeterminate-focused-outline-color | — | |
--tanrei-comp-checkbox-error-indeterminate-focused-state-layer-color | — | |
--tanrei-comp-checkbox-error-indeterminate-hovered-box-color | — | |
--tanrei-comp-checkbox-error-indeterminate-hovered-container-color | — | |
--tanrei-comp-checkbox-error-indeterminate-hovered-label-color | — | |
--tanrei-comp-checkbox-error-indeterminate-hovered-mark-color | — | |
--tanrei-comp-checkbox-error-indeterminate-hovered-outline-color | — | |
--tanrei-comp-checkbox-error-indeterminate-hovered-state-layer-color | — | |
--tanrei-comp-checkbox-error-indeterminate-label-color | sys.color.on-surface | |
--tanrei-comp-checkbox-error-indeterminate-mark-color | sys.color.on-error | |
--tanrei-comp-checkbox-error-indeterminate-outline-color | sys.color.error | |
--tanrei-comp-checkbox-error-indeterminate-pressed-box-color | — | |
--tanrei-comp-checkbox-error-indeterminate-pressed-container-color | — | |
--tanrei-comp-checkbox-error-indeterminate-pressed-label-color | — | |
--tanrei-comp-checkbox-error-indeterminate-pressed-mark-color | — | |
--tanrei-comp-checkbox-error-indeterminate-pressed-outline-color | — | |
--tanrei-comp-checkbox-error-indeterminate-pressed-state-layer-color | — | |
--tanrei-comp-checkbox-error-indeterminate-state-layer-color | comp.checkbox.error-indeterminate.outline.color | |
--tanrei-comp-checkbox-error-selected-box-color | sys.color.error | |
--tanrei-comp-checkbox-error-selected-container-color | — | |
--tanrei-comp-checkbox-error-selected-disabled-box-color | — | |
--tanrei-comp-checkbox-error-selected-disabled-container-color | — | |
--tanrei-comp-checkbox-error-selected-disabled-label-color | — | |
--tanrei-comp-checkbox-error-selected-disabled-mark-color | — | |
--tanrei-comp-checkbox-error-selected-disabled-outline-color | — | |
--tanrei-comp-checkbox-error-selected-disabled-state-layer-color | — | |
--tanrei-comp-checkbox-error-selected-focused-box-color | — | |
--tanrei-comp-checkbox-error-selected-focused-container-color | — | |
--tanrei-comp-checkbox-error-selected-focused-label-color | — | |
--tanrei-comp-checkbox-error-selected-focused-mark-color | — | |
--tanrei-comp-checkbox-error-selected-focused-outline-color | — | |
--tanrei-comp-checkbox-error-selected-focused-state-layer-color | — | |
--tanrei-comp-checkbox-error-selected-hovered-box-color | — | |
--tanrei-comp-checkbox-error-selected-hovered-container-color | — | |
--tanrei-comp-checkbox-error-selected-hovered-label-color | — | |
--tanrei-comp-checkbox-error-selected-hovered-mark-color | — | |
--tanrei-comp-checkbox-error-selected-hovered-outline-color | — | |
--tanrei-comp-checkbox-error-selected-hovered-state-layer-color | — | |
--tanrei-comp-checkbox-error-selected-label-color | sys.color.on-surface | |
--tanrei-comp-checkbox-error-selected-mark-color | sys.color.on-error | |
--tanrei-comp-checkbox-error-selected-outline-color | sys.color.error | |
--tanrei-comp-checkbox-error-selected-pressed-box-color | — | |
--tanrei-comp-checkbox-error-selected-pressed-container-color | — | |
--tanrei-comp-checkbox-error-selected-pressed-label-color | — | |
--tanrei-comp-checkbox-error-selected-pressed-mark-color | — | |
--tanrei-comp-checkbox-error-selected-pressed-outline-color | — | |
--tanrei-comp-checkbox-error-selected-pressed-state-layer-color | — | |
--tanrei-comp-checkbox-error-selected-state-layer-color | comp.checkbox.error-selected.outline.color | |
--tanrei-comp-checkbox-error-unselected-box-color | — | |
--tanrei-comp-checkbox-error-unselected-container-color | — | |
--tanrei-comp-checkbox-error-unselected-disabled-box-color | — | |
--tanrei-comp-checkbox-error-unselected-disabled-container-color | — | |
--tanrei-comp-checkbox-error-unselected-disabled-label-color | — | |
--tanrei-comp-checkbox-error-unselected-disabled-mark-color | — | |
--tanrei-comp-checkbox-error-unselected-disabled-outline-color | — | |
--tanrei-comp-checkbox-error-unselected-disabled-state-layer-color | — | |
--tanrei-comp-checkbox-error-unselected-focused-box-color | — | |
--tanrei-comp-checkbox-error-unselected-focused-container-color | — | |
--tanrei-comp-checkbox-error-unselected-focused-label-color | — | |
--tanrei-comp-checkbox-error-unselected-focused-mark-color | — | |
--tanrei-comp-checkbox-error-unselected-focused-outline-color | — | |
--tanrei-comp-checkbox-error-unselected-focused-state-layer-color | — | |
--tanrei-comp-checkbox-error-unselected-hovered-box-color | — | |
--tanrei-comp-checkbox-error-unselected-hovered-container-color | — | |
--tanrei-comp-checkbox-error-unselected-hovered-label-color | — | |
--tanrei-comp-checkbox-error-unselected-hovered-mark-color | — | |
--tanrei-comp-checkbox-error-unselected-hovered-outline-color | — | |
--tanrei-comp-checkbox-error-unselected-hovered-state-layer-color | — | |
--tanrei-comp-checkbox-error-unselected-label-color | sys.color.on-surface | |
--tanrei-comp-checkbox-error-unselected-mark-color | — | |
--tanrei-comp-checkbox-error-unselected-outline-color | sys.color.error | |
--tanrei-comp-checkbox-error-unselected-pressed-box-color | — | |
--tanrei-comp-checkbox-error-unselected-pressed-container-color | — | |
--tanrei-comp-checkbox-error-unselected-pressed-label-color | — | |
--tanrei-comp-checkbox-error-unselected-pressed-mark-color | — | |
--tanrei-comp-checkbox-error-unselected-pressed-outline-color | — | |
--tanrei-comp-checkbox-error-unselected-pressed-state-layer-color | — | |
--tanrei-comp-checkbox-error-unselected-state-layer-color | comp.checkbox.error-unselected.outline.color | |
--tanrei-comp-checkbox-focused-container-shape | — | 9999px |
--tanrei-comp-checkbox-focused-opacity | — | 1 |
--tanrei-comp-checkbox-hovered-container-shape | — | 9999px |
--tanrei-comp-checkbox-hovered-opacity | — | 1 |
--tanrei-comp-checkbox-indeterminate-box-color | sys.color.primary | |
--tanrei-comp-checkbox-indeterminate-container-color | — | |
--tanrei-comp-checkbox-indeterminate-disabled-box-color | — | |
--tanrei-comp-checkbox-indeterminate-disabled-container-color | — | |
--tanrei-comp-checkbox-indeterminate-disabled-label-color | — | |
--tanrei-comp-checkbox-indeterminate-disabled-mark-color | — | |
--tanrei-comp-checkbox-indeterminate-disabled-outline-color | — | |
--tanrei-comp-checkbox-indeterminate-disabled-state-layer-color | — | |
--tanrei-comp-checkbox-indeterminate-focused-box-color | — | |
--tanrei-comp-checkbox-indeterminate-focused-container-color | — | |
--tanrei-comp-checkbox-indeterminate-focused-label-color | — | |
--tanrei-comp-checkbox-indeterminate-focused-mark-color | — | |
--tanrei-comp-checkbox-indeterminate-focused-outline-color | — | |
--tanrei-comp-checkbox-indeterminate-focused-state-layer-color | — | |
--tanrei-comp-checkbox-indeterminate-hovered-box-color | — | |
--tanrei-comp-checkbox-indeterminate-hovered-container-color | — | |
--tanrei-comp-checkbox-indeterminate-hovered-label-color | — | |
--tanrei-comp-checkbox-indeterminate-hovered-mark-color | — | |
--tanrei-comp-checkbox-indeterminate-hovered-outline-color | — | |
--tanrei-comp-checkbox-indeterminate-hovered-state-layer-color | — | |
--tanrei-comp-checkbox-indeterminate-label-color | sys.color.on-surface | |
--tanrei-comp-checkbox-indeterminate-mark-color | sys.color.on-primary | |
--tanrei-comp-checkbox-indeterminate-outline-color | sys.color.primary | |
--tanrei-comp-checkbox-indeterminate-pressed-box-color | — | |
--tanrei-comp-checkbox-indeterminate-pressed-container-color | — | |
--tanrei-comp-checkbox-indeterminate-pressed-label-color | — | |
--tanrei-comp-checkbox-indeterminate-pressed-mark-color | — | |
--tanrei-comp-checkbox-indeterminate-pressed-outline-color | — | |
--tanrei-comp-checkbox-indeterminate-pressed-state-layer-color | — | |
--tanrei-comp-checkbox-indeterminate-state-layer-color | comp.checkbox.indeterminate.outline.color | |
--tanrei-comp-checkbox-label-gap | sys.space.space50 | 4px |
--tanrei-comp-checkbox-mark-size | sys.icon.small | 20px |
--tanrei-comp-checkbox-mark-weight | sys.icon.mark.weight | 500 |
--tanrei-comp-checkbox-motion-feedback-duration | sys.motion.role.feedback | 450ms |
--tanrei-comp-checkbox-motion-mark-enter-scale | — | 0.5 |
--tanrei-comp-checkbox-motion-mark-scale-duration | sys.motion.role.selection.mark | 250ms |
--tanrei-comp-checkbox-motion-mark-scale-easing | sys.motion.easing.spatial | cubic-bezier(0.2, 0, 0, 1) |
--tanrei-comp-checkbox-motion-selection-duration | sys.motion.role.selection.mark | 250ms |
--tanrei-comp-checkbox-motion-selection-easing | sys.motion.easing.state | cubic-bezier(0.2, 0, 0, 1) |
--tanrei-comp-checkbox-motion-state-duration | sys.motion.role.state.compact | 200ms |
--tanrei-comp-checkbox-motion-state-easing | sys.motion.easing.state | cubic-bezier(0.2, 0, 0, 1) |
--tanrei-comp-checkbox-outline-width | sys.border.thick | 2px |
--tanrei-comp-checkbox-pressed-container-shape | — | 9999px |
--tanrei-comp-checkbox-pressed-opacity | — | 1 |
--tanrei-comp-checkbox-selected-box-color | sys.color.primary | |
--tanrei-comp-checkbox-selected-container-color | — | |
--tanrei-comp-checkbox-selected-disabled-box-color | — | |
--tanrei-comp-checkbox-selected-disabled-container-color | — | |
--tanrei-comp-checkbox-selected-disabled-label-color | — | |
--tanrei-comp-checkbox-selected-disabled-mark-color | — | |
--tanrei-comp-checkbox-selected-disabled-outline-color | — | |
--tanrei-comp-checkbox-selected-disabled-state-layer-color | — | |
--tanrei-comp-checkbox-selected-focused-box-color | — | |
--tanrei-comp-checkbox-selected-focused-container-color | — | |
--tanrei-comp-checkbox-selected-focused-label-color | — | |
--tanrei-comp-checkbox-selected-focused-mark-color | — | |
--tanrei-comp-checkbox-selected-focused-outline-color | — | |
--tanrei-comp-checkbox-selected-focused-state-layer-color | — | |
--tanrei-comp-checkbox-selected-hovered-box-color | — | |
--tanrei-comp-checkbox-selected-hovered-container-color | — | |
--tanrei-comp-checkbox-selected-hovered-label-color | — | |
--tanrei-comp-checkbox-selected-hovered-mark-color | — | |
--tanrei-comp-checkbox-selected-hovered-outline-color | — | |
--tanrei-comp-checkbox-selected-hovered-state-layer-color | — | |
--tanrei-comp-checkbox-selected-label-color | sys.color.on-surface | |
--tanrei-comp-checkbox-selected-mark-color | sys.color.on-primary | |
--tanrei-comp-checkbox-selected-outline-color | sys.color.primary | |
--tanrei-comp-checkbox-selected-pressed-box-color | — | |
--tanrei-comp-checkbox-selected-pressed-container-color | — | |
--tanrei-comp-checkbox-selected-pressed-label-color | — | |
--tanrei-comp-checkbox-selected-pressed-mark-color | — | |
--tanrei-comp-checkbox-selected-pressed-outline-color | — | |
--tanrei-comp-checkbox-selected-pressed-state-layer-color | — | |
--tanrei-comp-checkbox-selected-state-layer-color | comp.checkbox.selected.outline.color | |
--tanrei-comp-checkbox-unselected-box-color | — | |
--tanrei-comp-checkbox-unselected-container-color | — | |
--tanrei-comp-checkbox-unselected-disabled-box-color | — | |
--tanrei-comp-checkbox-unselected-disabled-container-color | — | |
--tanrei-comp-checkbox-unselected-disabled-label-color | — | |
--tanrei-comp-checkbox-unselected-disabled-mark-color | — | |
--tanrei-comp-checkbox-unselected-disabled-outline-color | — | |
--tanrei-comp-checkbox-unselected-disabled-state-layer-color | — | |
--tanrei-comp-checkbox-unselected-focused-box-color | — | |
--tanrei-comp-checkbox-unselected-focused-container-color | — | |
--tanrei-comp-checkbox-unselected-focused-label-color | — | |
--tanrei-comp-checkbox-unselected-focused-mark-color | — | |
--tanrei-comp-checkbox-unselected-focused-outline-color | — | |
--tanrei-comp-checkbox-unselected-focused-state-layer-color | — | |
--tanrei-comp-checkbox-unselected-hovered-box-color | — | |
--tanrei-comp-checkbox-unselected-hovered-container-color | — | |
--tanrei-comp-checkbox-unselected-hovered-label-color | — | |
--tanrei-comp-checkbox-unselected-hovered-mark-color | — | |
--tanrei-comp-checkbox-unselected-hovered-outline-color | — | |
--tanrei-comp-checkbox-unselected-hovered-state-layer-color | — | |
--tanrei-comp-checkbox-unselected-label-color | sys.color.on-surface | |
--tanrei-comp-checkbox-unselected-mark-color | — | |
--tanrei-comp-checkbox-unselected-outline-color | sys.color.outline | |
--tanrei-comp-checkbox-unselected-pressed-box-color | — | |
--tanrei-comp-checkbox-unselected-pressed-container-color | — | |
--tanrei-comp-checkbox-unselected-pressed-label-color | — | |
--tanrei-comp-checkbox-unselected-pressed-mark-color | — | |
--tanrei-comp-checkbox-unselected-pressed-outline-color | — | |
--tanrei-comp-checkbox-unselected-pressed-state-layer-color | — | |
--tanrei-comp-checkbox-unselected-state-layer-color | comp.checkbox.unselected.outline.color | |
--tanrei-comp-checkbox-label-typescale | sys.typescale.body | 400 14px/1.5714 |
Fixtures
Representaciones canónicas. Todas las plataformas capturan cada fixture con el mismo identificador para poder comparar los resultados.
unselected
label: Email me updates selected
checked: true label: Email me updates indeterminate
indeterminate: true label: Select all error-unselected
error: true label: I accept the terms error-selected
checked: true error: true label: I accept the terms error-indeterminate
indeterminate: true error: true label: Select all disabled-unselected
disabled: true label: Email me updates disabled-selected
checked: true disabled: true label: Email me updates disabled-indeterminate
indeterminate: true disabled: true label: Select all label-hidden
checked: true label: Select row labelHidden: true read-only-selected
checked: true readOnly: true label: Send me a receipt Generado a partir de specs/checkbox.spec.json, tokens/comp/checkbox.tokens.json, design/tokens/
Usa una casilla de verificación para una elección que se sostiene por sí sola: una lista en la que las personas pueden escoger cualquier número de opciones, incluida ninguna, o un único sí o no, como aceptar unas condiciones. La elección surte efecto cuando la persona confirma, por ejemplo al enviar el formulario o al guardar. Una casilla de verificación también selecciona filas de una tabla o elementos de una lista.
El estado indeterminado corresponde a una casilla principal cuyas casillas secundarias están marcadas en parte, como «Seleccionar todo» encima de una lista. No es una tercera respuesta que una persona pueda escoger.
Una casilla de verificación de solo lectura muestra una respuesta que la persona puede leer pero no cambiar, como un paso de revisión antes de enviar un pedido o un ajuste que solo algunas personas pueden cambiar. Sigue en el orden del foco, se anuncia con su estado y como de solo lectura, y se envía con su formulario. Se ve como una casilla habilitada, sin la respuesta al pasar el puntero ni al pulsar, para que se lea como una respuesta y no como algo no disponible. Usa disabled cuando la opción no aplica en absoluto, y escribe la respuesta como texto cuando nadie necesita llegar a ella.
| Control | Elecciones | Surte efecto | Úsalo para |
|---|---|---|---|
| Casilla de verificación | Cualquier número de elecciones independientes, incluida ninguna | Cuando la persona confirma | Opciones de un formulario, aceptar unas condiciones, seleccionar filas |
| Botón de opción | Exactamente una de un grupo pequeño, todas a la vista | Cuando la persona confirma, por lo general | Una sola respuesta a una sola pregunta |
| Interruptor | Un solo ajuste, activado o desactivado | De inmediato | Ajustes que se aplican en cuanto cambian |
- Escribe la etiqueta como la elección, formulada en positivo: «Enviarme novedades por correo», no «No enviarme correos».
- Apila en vertical una lista de casillas de verificación, una por línea, para que todas las etiquetas empiecen en el mismo lugar.
- Deriva el estado indeterminado de las casillas secundarias. Cuando se active la casilla principal, marca todas las secundarias.
- Cuando una casilla de verificación obligatoria quede sin marcar, define
errory explica el motivo en el mensaje del formulario.
- No uses una casilla de verificación para un cambio que se aplica de inmediato. Usa un interruptor.
- No uses casillas de verificación para elecciones que se excluyen entre sí. Usa botones de opción.
- No pongas enlaces ni otros controles dentro de la etiqueta. Un clic en la etiqueta conmuta la casilla de verificación.
- No ocultes la etiqueta salvo que la fila que rodea a la casilla de verificación ya diga qué selecciona.
- Rol
checkbox- Etiquetado
- label is the accessible name, visible or not (labelHidden). A click on the visible label toggles the checkbox, as a native label does. A checkbox with no label is reported in debug builds.
- 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 checkbox. |
| Space | Switches it (an indeterminate checkbox becomes checked); nothing while it is read-only. |
| Enter | Nothing on the web (it submits the form); switches it where the platform activates any focused control with Enter (Android, tvOS). |
Notas
- The mixed state is announced as such (aria-checked="mixed" on the web, a toggleable state of Indeterminate on Android, a Semantics mixed value in Flutter, accessibilityState checked "mixed" in React Native). SwiftUI has no mixed trait on iOS: the value is announced as "mixed" through accessibilityValue.
- error is exposed as invalid (aria-invalid on the web, the error semantics on Android and Flutter). The reason is text the form shows and associates with the checkbox; the checkbox does not draw it.
- Read-only (CHK-24) is a checkbox that shows an answer in place and keeps it in the focus order, so that it is read with its form — on a review step, or where only some people may change it. HTML's readonly attribute does not apply to a checkbox, so a read-only checkbox is not a native one's: on the web it keeps the native checkbox enabled, cancels its activation and says read-only with aria-readonly, which WAI-ARIA allows on the checkbox role; React Aria's isReadOnly is the same: focusable, announced with its value, not changeable. Where the answer needs no control at all, write it as text; where the person may not reach it at all, it is disabled.
- Several checkboxes that answer one question are a checkbox group: it names the set, holds the list of the checked values under one name and says the set's error (CHK-23). A checkbox stands alone where it is one choice of its own — a consent, a setting — and in a field group where each checkbox of a set has a name of its own.
- The check and the dash are decorative glyphs of the icon set, hidden from assistive technology: where a glyph is written as a ligature (the web), its name ("check", "remove") is never announced or shown as text (CHK-12, CHK-19). Checked and indeterminate differ by the glyph alone, and both are exposed as states (CHK-14).
- The mark is drawn at its own weight (comp.checkbox.mark.weight, CHK-12), heavier than the system's icons in the default system. Its color already has the contrast of content on its fill; what a light weight loses is the stroke, which at this size is about one pixel wide and is drawn in a mix of the mark's color and the fill's. A system that sets a lighter weight should look at the dash in particular: it is one stroke, and it is all that tells indeterminate from checked.
- The selection motion is decoration too: under reduced motion the new condition is drawn whole at once, never later (CHK-17).
- The label wraps at 200% text size; the box does not grow with text, because it is a control, not text.
- How a state looks is a value decision of the active design system; components read the state's tokens and never compute the effect themselves.
Generado a partir de specs/checkbox.spec.json, tokens/sys/measure.tokens.json
- Expone el rol de casilla de verificación con su estado (marcada, sin marcar o mixta mientras es indeterminada), su estado deshabilitado y el estado no válido mientras
errorestá definido. React Native no tiene estado no válido, así que ahí un error se dibuja pero no se anuncia. - La etiqueta es el nombre accesible, tanto si se dibuja como si se oculta con
labelHidden. El texto dibujado queda oculto para la tecnología de apoyo, de modo que el nombre se lee una sola vez. - Un clic o un toque en la etiqueta conmuta la casilla de verificación. La etiqueta forma parte del área de pulsación, y el área de pulsación cumple el objetivo mínimo.
- Espacio la conmuta. Enter la conmuta solo donde la plataforma activa con Enter cualquier control con foco (Android, tvOS); en la web, Enter envía el formulario.
- Mientras
readOnlyestá activo, sigue pudiendo recibir el foco y se anuncia como de solo lectura junto a su estado. Ninguna pulsación, Espacio, clic en la etiqueta niclick()la cambia, y no muestra respuesta al pasar el puntero ni al pulsar. En la web su valor se sigue enviando, y una obligatoria no informa de un valor ausente. Elreadonlyde HTML no se aplica a una casilla de verificación, así que el componente lo hace por sí mismo. - Muestra el indicador de foco alrededor del recuadro, solo para el foco del teclado.
- La marca de verificación y el guion quedan ocultos para la tecnología de apoyo. Los estados marcada y mixta se anuncian a partir del estado, nunca a partir del nombre del glifo.
- Cuando el movimiento está reducido, la nueva condición se dibuja completa en el primer fotograma después del cambio, nunca con retraso ni a medio dibujar. Un cambio durante otro cambio continúa desde lo que hay dibujado en ese momento.
- Mientras la fuente de iconos todavía no puede dibujar el glifo, la casilla de verificación no dibuja nada en su lugar, nunca la palabra «check», y sigue dibujando su recuadro relleno y exponiendo su estado. El glifo aparece cuando la fuente se ha cargado.
- En la web participa en un formulario como una casilla de verificación nativa:
name,value,requiredy el restablecimiento. - En las compilaciones de depuración se notifica que falta la etiqueta.
Carencias conocidas por plataforma:
- SwiftUI, Compose, Flutter y React Native siguen dibujando la marca de verificación y el guion como marcas propias y animándolos a su manera, sin el peso propio de la marca ni el recuadro de una sola forma.
readOnlyestá por ahora solo en la web: SwiftUI, Compose, Flutter y React Native todavía no lo tienen.- Con
m3-like, la marca de verificación es el glifo del conjunto de iconos y aparece con un fundido mientras crece, mientras que Material dibuja su propia marca trazo a trazo y la dobla hasta convertirla en el guion (laguna de imitacióncheckbox-mark-drawn-on).
- Carga la fuente de iconos. Hasta que se haya cargado, una casilla de verificación marcada y una indeterminada se ven iguales: ambas son recuadros rellenos sin glifo. Sus estados se siguen anunciando.
- Si tu sistema de diseño define un peso más ligero para la marca (
comp.checkbox.mark.weight), fíjate en el guion: es un solo trazo, y es lo único que distingue a la vista el estado indeterminado del marcado. - Escribe una etiqueta que dé nombre a la elección, y mantenla igual tanto si la casilla de verificación está marcada como si no. La plataforma anuncia el estado.
- Cuando
erroresté definido, muestra el motivo como texto junto a la casilla de verificación o en el resumen del formulario, y asócialo a la casilla de verificación. La casilla de verificación dice que no es válida, no por qué. En React Native, el mensaje es la única forma de que el error se oiga. - Da un nombre a un grupo de casillas de verificación que responden a una misma pregunta: en la web, un
<fieldset>con un<legend>.