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packages/carbon-web-components/src/components/checkbox/checkbox-group.ts
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| /** | ||
| * @license | ||
| * | ||
| * Copyright IBM Corp. 2019, 2023 | ||
| * | ||
| * This source code is licensed under the Apache-2.0 license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| */ | ||
|
|
||
| import { classMap } from 'lit/directives/class-map.js'; | ||
| import { LitElement, html } from 'lit'; | ||
| import { property } from 'lit/decorators.js'; | ||
| import { prefix } from '../../globals/settings'; | ||
| import WarningFilled16 from '@carbon/icons/lib/warning--filled/16'; | ||
| import WarningAltFilled16 from '@carbon/icons/lib/warning--alt--filled/16'; | ||
| import CDSCheckbox from './checkbox'; | ||
| import styles from './checkbox.scss'; | ||
| import { carbonElement as customElement } from '../../globals/decorators/carbon-element'; | ||
|
|
||
| /** | ||
| * Check box. | ||
| * | ||
| * @element cds-checkbox | ||
| * @fires cds-checkbox-changed - The custom event fired after this changebox changes its checked state. | ||
| * @csspart input The checkbox. | ||
| * @csspart label The label. | ||
| */ | ||
| @customElement(`${prefix}-checkbox-group`) | ||
| class CDSCheckboxGroup extends LitElement { | ||
| /** | ||
| * fieldset `aria-labelledby` | ||
| */ | ||
| @property({ type: String, reflect: true, attribute: 'aria-labelledby' }) | ||
| ariaLabelledBy; | ||
|
|
||
| /** | ||
| * Specify whether the form group is currently disabled | ||
| */ | ||
| @property({ type: Boolean }) | ||
| disabled; | ||
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|
||
| /** | ||
| * Provide text for the form group for additional help | ||
| */ | ||
| @property({ type: String, reflect: true, attribute: 'helper-text' }) | ||
| helperText; | ||
|
|
||
| /** | ||
| * Specify whether the form group is currently invalid | ||
| */ | ||
| @property({ type: Boolean, attribute: 'invalid' }) | ||
| invalid; | ||
|
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| /** | ||
| * Provide the text that is displayed when the form group is in an invalid state | ||
| */ | ||
| @property({ type: String, reflect: true, attribute: 'invalid-text' }) | ||
| invalidText; | ||
|
|
||
| /** | ||
| * Provide id for the fieldset <legend> which corresponds to the fieldset | ||
| * `aria-labelledby` | ||
| */ | ||
| @property({ type: String, reflect: true, attribute: 'legend-id' }) | ||
| legendId; | ||
|
|
||
| /** | ||
| * Provide the text to be rendered inside of the fieldset <legend> | ||
| */ | ||
| @property({ type: String, reflect: true, attribute: 'legend-text' }) | ||
| legendText; | ||
|
|
||
| /** | ||
| * Whether the CheckboxGroup should be read-only | ||
| */ | ||
| @property({ type: Boolean, reflect: true }) | ||
| readonly = false; | ||
|
|
||
| /** | ||
| * Specify whether the form group is currently in warning state | ||
| */ | ||
| @property({ type: Boolean, reflect: true }) | ||
| warn = false; | ||
|
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| /** | ||
| * Provide the text that is displayed when the form group is in warning state | ||
| */ | ||
| @property({ type: String, reflect: true, attribute: 'warn-text' }) | ||
| warnText = ''; | ||
|
|
||
| /* | ||
| * Handles `slotchange` event. | ||
| */ | ||
| protected _handleSlotChange({ target }: Event) { | ||
| const hasContent = (target as HTMLSlotElement) | ||
| .assignedNodes() | ||
| .filter((elem) => | ||
| (elem as HTMLElement).matches !== undefined | ||
| ? (elem as HTMLElement).matches( | ||
| (this.constructor as typeof CDSCheckboxGroup).slugItem | ||
| ) | ||
| : false | ||
| ); | ||
|
|
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| this._hasSlug = Boolean(hasContent); | ||
| (hasContent[0] as HTMLElement).setAttribute('size', 'mini'); | ||
| this.requestUpdate(); | ||
| } | ||
|
|
||
| /** | ||
| * `true` if there is a slug. | ||
| */ | ||
| protected _hasSlug = false; | ||
|
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| updated(changedProperties) { | ||
| const { selectorCheckbox } = this.constructor as typeof CDSCheckboxGroup; | ||
| const checkboxes = this.querySelectorAll(selectorCheckbox); | ||
| ['disabled', 'readonly'].forEach((name) => { | ||
| if (changedProperties.has(name)) { | ||
| const { [name as keyof CDSCheckboxGroup]: value } = this; | ||
| // Propagate the property to descendants until `:host-context()` gets supported in all major browsers | ||
| checkboxes.forEach((elem) => { | ||
| (elem as CDSCheckbox)[name] = value; | ||
| }); | ||
| } | ||
| }); | ||
| if (changedProperties.has('invalid')) { | ||
| const { invalid } = this; | ||
| checkboxes.forEach((elem) => { | ||
| if (invalid) { | ||
| (elem as CDSCheckbox).setAttribute('invalid-group', ''); | ||
| } else { | ||
| (elem as CDSCheckbox).removeAttribute('invalid-group'); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| render() { | ||
| const { | ||
| ariaLabelledBy, | ||
| disabled, | ||
| helperText, | ||
| invalid, | ||
| invalidText, | ||
| legendId, | ||
| legendText, | ||
| readonly, | ||
| warn, | ||
| warnText, | ||
| _hasSlug: hasSlug, | ||
| _handleSlotChange: handleSlotChange, | ||
| } = this; | ||
|
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| const showWarning = !readonly && !invalid && warn; | ||
| const showHelper = !invalid && !warn; | ||
|
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| const checkboxGroupInstanceId = Math.random().toString(16).slice(2); | ||
|
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| const helperId = !helperText | ||
| ? undefined | ||
| : `checkbox-group-helper-text-${checkboxGroupInstanceId}`; | ||
|
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| const helper = helperText | ||
| ? html` <div id="${helperId}" class="${prefix}--form__helper-text"> | ||
| ${helperText} | ||
| </div>` | ||
| : null; | ||
|
|
||
| const fieldsetClasses = classMap({ | ||
| [`${prefix}--checkbox-group`]: true, | ||
| [`${prefix}--checkbox-group--readonly`]: readonly, | ||
| [`${prefix}--checkbox-group--invalid`]: !readonly && invalid, | ||
| [`${prefix}--checkbox-group--warning`]: showWarning, | ||
| [`${prefix}--checkbox-group--slug`]: hasSlug, | ||
| }); | ||
|
|
||
| return html` | ||
| <fieldset | ||
| class="${fieldsetClasses}" | ||
| ?data-invalid=${invalid} | ||
| ?disabled=${disabled} | ||
| aria-readonly=${readonly} | ||
| ?aria-labelledby=${ariaLabelledBy || legendId} | ||
| ?aria-describedby=${!invalid && !warn && helper ? helperId : undefined}> | ||
| <legend class="${prefix}--label" id=${legendId || ariaLabelledBy}> | ||
| ${legendText} | ||
| <slot name="slug" @slotchange="${handleSlotChange}"></slot> | ||
| </legend> | ||
| <slot></slot> | ||
| <div class="${prefix}--checkbox-group__validation-msg"> | ||
| ${!readonly && invalid | ||
| ? html` | ||
| ${WarningFilled16({ | ||
| class: `${prefix}--checkbox__invalid-icon`, | ||
| })} | ||
| <div class="${prefix}--form-requirement">${invalidText}</div> | ||
| ` | ||
| : null} | ||
| ${showWarning | ||
| ? html` | ||
| ${WarningAltFilled16({ | ||
| class: `${prefix}--checkbox__invalid-icon ${prefix}--checkbox__invalid-icon--warning`, | ||
| })} | ||
| <div class="${prefix}--form-requirement">${warnText}</div> | ||
| ` | ||
| : null} | ||
| </div> | ||
| ${showHelper ? helper : null} | ||
| </fieldset> | ||
| `; | ||
| } | ||
|
|
||
| /** | ||
| * A selector that will return the checkboxes. | ||
| */ | ||
| static get selectorCheckbox() { | ||
| return `${prefix}-checkbox`; | ||
| } | ||
|
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| /** | ||
| * A selector that will return the slug item. | ||
| */ | ||
| static get slugItem() { | ||
| return `${prefix}-slug`; | ||
| } | ||
|
|
||
| static shadowRootOptions = { | ||
| ...LitElement.shadowRootOptions, | ||
| delegatesFocus: true, | ||
| }; | ||
| static styles = styles; // `styles` here is a `CSSResult` generated by custom WebPack loader | ||
| } | ||
|
|
||
| export default CDSCheckboxGroup; |
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