react-aria/dist/private/datepicker/useDateSegment.cjs.map

Spectrum UI components in React

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* Copyright 2020 Adobe. All rights reserved.\n * This file is licensed to you under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License. You may obtain a copy\n * of the License at http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software distributed under\n * the License is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS\n * OF ANY KIND, either express or implied. See the License for the specific language\n * governing permissions and limitations under the License.\n */\n\nimport {CalendarDate, toCalendar} from '@internationalized/date';\nimport {DateFieldState, DateSegment} from 'react-stately/useDateFieldState';\nimport {getActiveElement, nodeContains} from '../utils/shadowdom/DOMFunctions';\nimport {getScrollParent} from '../utils/getScrollParent';\nimport {hookData} from './useDateField';\nimport {isIOS, isMac} from '../utils/platform';\nimport {mergeProps} from '../utils/mergeProps';\nimport {NumberParser} from '@internationalized/number';\nimport React, {CSSProperties, useMemo, useRef} from 'react';\nimport {RefObject} from '@react-types/shared';\nimport {scrollIntoViewport} from '../utils/scrollIntoView';\nimport {useDateFormatter} from '../i18n/useDateFormatter';\nimport {useDisplayNames} from './useDisplayNames';\nimport {useEvent} from '../utils/useEvent';\nimport {useFilter} from '../i18n/useFilter';\nimport {useId} from '../utils/useId';\nimport {useLabels} from '../utils/useLabels';\nimport {useLayoutEffect} from '../utils/useLayoutEffect';\nimport {useLocale} from '../i18n/I18nProvider';\nimport {useSpinButton} from '../spinbutton/useSpinButton';\n\nexport interface DateSegmentAria {\n  /** Props for the segment element. */\n  segmentProps: React.HTMLAttributes<HTMLDivElement>;\n}\n\n/**\n * Provides the behavior and accessibility implementation for a segment in a date field.\n * A date segment displays an individual unit of a date and time, and allows users to edit\n * the value by typing or using the arrow keys to increment and decrement.\n */\nexport function useDateSegment(\n  segment: DateSegment,\n  state: DateFieldState,\n  ref: RefObject<HTMLElement | null>\n): DateSegmentAria {\n  let enteredKeys = useRef('');\n  let {locale, direction} = useLocale();\n  let displayNames = useDisplayNames();\n  let {ariaLabel, ariaLabelledBy, ariaDescribedBy, focusManager} = hookData.get(state)!;\n\n  let textValue = segment.isPlaceholder ? '' : segment.text;\n  let options = useMemo(() => state.dateFormatter.resolvedOptions(), [state.dateFormatter]);\n  let monthDateFormatter = useDateFormatter({month: 'long', timeZone: options.timeZone});\n  let hourDateFormatter = useDateFormatter({\n    hour: 'numeric',\n    hour12: options.hour12,\n    timeZone: options.timeZone\n  });\n\n  if (segment.type === 'month' && !segment.isPlaceholder) {\n    let monthTextValue = monthDateFormatter.format(state.dateValue);\n    textValue = monthTextValue !== textValue ? `${textValue} – ${monthTextValue}` : monthTextValue;\n  } else if (segment.type === 'hour' && !segment.isPlaceholder) {\n    textValue = hourDateFormatter.format(state.dateValue);\n  }\n\n  let {spinButtonProps} = useSpinButton({\n    // The ARIA spec says aria-valuenow is optional if there's no value, but aXe seems to require it.\n    // This doesn't seem to have any negative effects with real AT since we also use aria-valuetext.\n    // https://github.com/dequelabs/axe-core/issues/3505\n    value: segment.value ?? undefined,\n    textValue,\n    minValue: segment.minValue,\n    maxValue: segment.maxValue,\n    isDisabled: state.isDisabled,\n    isReadOnly: state.isReadOnly || !segment.isEditable,\n    isRequired: state.isRequired,\n    onIncrement: () => {\n      enteredKeys.current = '';\n      state.increment(segment.type);\n    },\n    onDecrement: () => {\n      enteredKeys.current = '';\n      state.decrement(segment.type);\n    },\n    onIncrementPage: () => {\n      enteredKeys.current = '';\n      state.incrementPage(segment.type);\n    },\n    onDecrementPage: () => {\n      enteredKeys.current = '';\n      state.decrementPage(segment.type);\n    },\n    onIncrementToMax: () => {\n      enteredKeys.current = '';\n      state.incrementToMax(segment.type);\n    },\n    onDecrementToMin: () => {\n      enteredKeys.current = '';\n      state.decrementToMin(segment.type);\n    }\n  });\n\n  let parser = useMemo(() => new NumberParser(locale, {maximumFractionDigits: 0}), [locale]);\n\n  let backspace = () => {\n    if (segment.text === segment.placeholder) {\n      focusManager.focusPrevious();\n    }\n    if (parser.isValidPartialNumber(segment.text) && !state.isReadOnly && !segment.isPlaceholder) {\n      let newValue = segment.text.slice(0, -1);\n      let parsed = parser.parse(newValue);\n      newValue = parsed === 0 ? '' : newValue;\n      if (newValue.length === 0 || parsed === 0) {\n        state.clearSegment(segment.type);\n      } else {\n        state.setSegment(segment.type, parsed);\n      }\n      enteredKeys.current = newValue;\n    } else if (segment.type === 'dayPeriod' || segment.type === 'era') {\n      state.clearSegment(segment.type);\n    }\n  };\n\n  let onKeyDown = e => {\n    // Firefox does not fire selectstart for Ctrl/Cmd + A\n    // https://bugzilla.mozilla.org/show_bug.cgi?id=1742153\n    if (e.key === 'a' && (isMac() ? e.metaKey : e.ctrlKey)) {\n      e.preventDefault();\n    }\n\n    if (e.ctrlKey || e.metaKey || e.shiftKey || e.altKey) {\n      return;\n    }\n\n    switch (e.key) {\n      case 'Backspace':\n      case 'Delete': {\n        // Safari on iOS does not fire beforeinput for the backspace key because the cursor is at the start.\n        e.preventDefault();\n        e.stopPropagation();\n        backspace();\n        break;\n      }\n    }\n  };\n\n  // Safari dayPeriod option doesn't work...\n  let {startsWith} = useFilter({sensitivity: 'base'});\n  let amPmFormatter = useDateFormatter({hour: 'numeric', hour12: true});\n  let am = useMemo(() => {\n    let date = new Date();\n    date.setHours(0);\n    return amPmFormatter.formatToParts(date).find(part => part.type === 'dayPeriod')!.value;\n  }, [amPmFormatter]);\n\n  let pm = useMemo(() => {\n    let date = new Date();\n    date.setHours(12);\n    return amPmFormatter.formatToParts(date).find(part => part.type === 'dayPeriod')!.value;\n  }, [amPmFormatter]);\n\n  // Get a list of formatted era names so users can type the first character to choose one.\n  let eraFormatter = useDateFormatter({year: 'numeric', era: 'narrow', timeZone: 'UTC'});\n  let eras = useMemo(() => {\n    if (segment.type !== 'era') {\n      return [];\n    }\n\n    let date = toCalendar(new CalendarDate(1, 1, 1), state.calendar);\n    let eras = state.calendar.getEras().map(era => {\n      let eraDate = date.set({year: 1, month: 1, day: 1, era}).toDate('UTC');\n      let parts = eraFormatter.formatToParts(eraDate);\n      let formatted = parts.find(p => p.type === 'era')!.value;\n      return {era, formatted};\n    });\n\n    // Remove the common prefix from formatted values. This is so that in calendars with eras like\n    // ERA0 and ERA1 (e.g. Ethiopic), users can press \"0\" and \"1\" to select an era. In other cases,\n    // the first letter is used.\n    let prefixLength = commonPrefixLength(eras.map(era => era.formatted));\n    if (prefixLength) {\n      for (let era of eras) {\n        era.formatted = era.formatted.slice(prefixLength);\n      }\n    }\n\n    return eras;\n  }, [eraFormatter, state.calendar, segment.type]);\n\n  let onInput = (key: string) => {\n    if (state.isDisabled || state.isReadOnly) {\n      return;\n    }\n\n    let newValue = enteredKeys.current + key;\n\n    switch (segment.type) {\n      case 'dayPeriod':\n        if (startsWith(am, key)) {\n          state.setSegment('dayPeriod', 0);\n        } else if (startsWith(pm, key)) {\n          state.setSegment('dayPeriod', 1);\n        } else {\n          break;\n        }\n        focusManager.focusNext();\n        break;\n      case 'era': {\n        let matched = eras.find(e => startsWith(e.formatted, key));\n        if (matched) {\n          state.setSegment('era', matched.era);\n          focusManager.focusNext();\n        }\n        break;\n      }\n      case 'day':\n      case 'hour':\n      case 'minute':\n      case 'second':\n      case 'month':\n      case 'year': {\n        if (!parser.isValidPartialNumber(newValue)) {\n          return;\n        }\n\n        let numberValue = parser.parse(newValue);\n        let segmentValue = numberValue;\n        if (segment.maxValue !== undefined && numberValue > segment.maxValue) {\n          segmentValue = parser.parse(key);\n        }\n\n        if (isNaN(numberValue)) {\n          return;\n        }\n\n        state.setSegment(segment.type, segmentValue);\n\n        if (\n          segment.maxValue !== undefined &&\n          (Number(numberValue + '0') > segment.maxValue ||\n            newValue.length >= String(segment.maxValue).length)\n        ) {\n          enteredKeys.current = '';\n          focusManager.focusNext();\n        } else {\n          enteredKeys.current = newValue;\n        }\n        break;\n      }\n    }\n  };\n\n  let onFocus = () => {\n    enteredKeys.current = '';\n    if (ref.current) {\n      scrollIntoViewport(ref.current, {containingElement: getScrollParent(ref.current)});\n    }\n\n    // Collapse selection to start or Chrome won't fire input events.\n    let selection = window.getSelection();\n    selection?.collapse(ref.current);\n  };\n\n  let documentRef = useRef(typeof document !== 'undefined' ? document : null);\n  useEvent(documentRef, 'selectionchange', () => {\n    // Enforce that the selection is collapsed when inside a date segment.\n    // Otherwise, when tapping on a segment in Android Chrome and then entering text,\n    // composition events will be fired that break the DOM structure and crash the page.\n    let selection = window.getSelection();\n    if (selection?.anchorNode && nodeContains(ref.current, selection?.anchorNode)) {\n      selection.collapse(ref.current);\n    }\n  });\n\n  let compositionRef = useRef<string | null>('');\n  useEvent(ref, 'beforeinput', e => {\n    if (!ref.current) {\n      return;\n    }\n    e.preventDefault();\n\n    switch (e.inputType) {\n      case 'deleteContentBackward':\n      case 'deleteContentForward':\n        if (parser.isValidPartialNumber(segment.text) && !state.isReadOnly) {\n          backspace();\n        }\n        break;\n      case 'insertCompositionText':\n        // insertCompositionText cannot be canceled.\n        // Record the current state of the element so we can restore it in the `input` event below.\n        compositionRef.current = ref.current.textContent;\n\n        // Safari gets stuck in a composition state unless we also assign to the value here.\n        // eslint-disable-next-line no-self-assign\n        ref.current.textContent = ref.current.textContent;\n        break;\n      default:\n        if (e.data != null) {\n          onInput(e.data);\n        }\n        break;\n    }\n  });\n\n  useEvent(ref, 'input', e => {\n    let {inputType, data} = e as InputEvent;\n    switch (inputType) {\n      case 'insertCompositionText':\n        // Reset the DOM to how it was in the beforeinput event.\n        if (ref.current) {\n          ref.current.textContent = compositionRef.current;\n        }\n\n        // Android sometimes fires key presses of letters as composition events. Need to handle am/pm keys here too.\n        // Can also happen e.g. with Pinyin keyboard on iOS.\n        if (data != null && (startsWith(am, data) || startsWith(pm, data))) {\n          onInput(data);\n        }\n        break;\n    }\n  });\n\n  useLayoutEffect(() => {\n    let element = ref.current;\n    return () => {\n      // If the focused segment is removed, focus the previous one, or the next one if there was no previous one.\n      if (getActiveElement() === element) {\n        let prev = focusManager.focusPrevious();\n        if (!prev) {\n          focusManager.focusNext();\n        }\n      }\n    };\n  }, [ref, focusManager]);\n\n  // spinbuttons cannot be focused with VoiceOver on iOS.\n  let touchPropOverrides =\n    isIOS() || segment.type === 'timeZoneName'\n      ? {\n          role: 'textbox',\n          'aria-valuemax': null,\n          'aria-valuemin': null,\n          'aria-valuetext': null,\n          'aria-valuenow': null\n        }\n      : {};\n\n  // Only apply aria-describedby to the first segment, unless the field is invalid. This avoids it being\n  // read every time the user navigates to a new segment.\n  let firstSegment = useMemo(() => state.segments.find(s => s.isEditable), [state.segments]);\n  if (segment !== firstSegment && !state.isInvalid) {\n    ariaDescribedBy = undefined;\n  }\n\n  let id = useId();\n  let isEditable = !state.isDisabled && !state.isReadOnly && segment.isEditable;\n\n  // Prepend the label passed from the field to each segment name.\n  // This is needed because VoiceOver on iOS does not announce groups.\n  let name = segment.type === 'literal' ? '' : displayNames.of(segment.type);\n  let labelProps = useLabels({\n    'aria-label': `${name}${ariaLabel ? `, ${ariaLabel}` : ''}${ariaLabelledBy ? ', ' : ''}`,\n    'aria-labelledby': ariaLabelledBy\n  });\n\n  // Literal segments should not be visible to screen readers. We don't really need any of the above,\n  // but the rules of hooks mean hooks cannot be conditional so we have to put this condition here.\n  if (segment.type === 'literal') {\n    return {\n      segmentProps: {\n        'aria-hidden': true\n      }\n    };\n  }\n\n  let segmentStyle: CSSProperties = {caretColor: 'transparent'};\n  if (direction === 'rtl') {\n    // While the bidirectional algorithm seems to work properly on inline elements with actual values, it returns different results for placeholder strings.\n    // To ensure placeholder render in correct format, we apply the CSS equivalent of LRE (left-to-right embedding). See https://www.unicode.org/reports/tr9/#Explicit_Directional_Embeddings.\n    // However, we apply this to both placeholders and date segments with an actual value because the date segments will shift around when deleting otherwise.\n    segmentStyle.unicodeBidi = 'embed';\n    let format = options[segment.type];\n    if (format === 'numeric' || format === '2-digit') {\n      segmentStyle.direction = 'ltr';\n    }\n  }\n\n  return {\n    segmentProps: mergeProps(spinButtonProps, labelProps, {\n      id,\n      ...touchPropOverrides,\n      'aria-invalid': state.isInvalid ? 'true' : undefined,\n      'aria-describedby': ariaDescribedBy,\n      'aria-readonly': state.isReadOnly || !segment.isEditable ? 'true' : undefined,\n      'data-placeholder': segment.isPlaceholder || undefined,\n      contentEditable: isEditable,\n      suppressContentEditableWarning: isEditable,\n      spellCheck: isEditable ? 'false' : undefined,\n      autoCorrect: isEditable ? 'off' : undefined,\n      // Capitalization was changed in React 17...\n      [parseInt(React.version, 10) >= 17 ? 'enterKeyHint' : 'enterkeyhint']: isEditable\n        ? 'next'\n        : undefined,\n      inputMode:\n        state.isDisabled || segment.type === 'dayPeriod' || segment.type === 'era' || !isEditable\n          ? undefined\n          : 'numeric',\n      tabIndex: state.isDisabled ? undefined : 0,\n      onKeyDown,\n      onFocus,\n      style: segmentStyle,\n      // Prevent pointer events from reaching useDatePickerGroup, and allow native browser behavior to focus the segment.\n      onPointerDown(e) {\n        e.stopPropagation();\n      },\n      onMouseDown(e) {\n        e.stopPropagation();\n      }\n    })\n  };\n}\n\nfunction commonPrefixLength(strings: string[]): number {\n  // Sort the strings, and compare the characters in the first and last to find the common prefix.\n  strings.sort();\n  let first = strings[0];\n  let last = strings[strings.length - 1];\n  for (let i = 0; i < first.length; i++) {\n    if (first[i] !== last[i]) {\n      return i;\n    }\n  }\n  return 0;\n}\n"],"names":[],"version":3,"file":"useDateSegment.cjs.map"}