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* Copyright 2026 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 {AnyDateTime, Calendar, CalendarDate, ZonedDateTime} from '@internationalized/date';\nimport {DateSegmentType} from './useDateFieldState';\nimport {DateValue} from './types';\n\ntype HourCycle = 'h12' | 'h11' | 'h23' | 'h24';\n\n/**\n * This class represents a date that is incomplete or otherwise invalid as a result of user editing.\n * For example, it can represent temporary dates such as February 31st if the user edits the day\n * before the month. Times are represented according to an hour cycle rather than always in 24 hour\n * time. This enables the user to adjust the day period (e.g. am/pm) independently from the hour.\n */\nexport class IncompleteDate {\n  calendar: Calendar;\n  era: string | null;\n  year: number | null;\n  month: number | null;\n  day: number | null;\n  hour: number | null;\n  hourCycle: HourCycle;\n  dayPeriod: number | null;\n  minute: number | null;\n  second: number | null;\n  millisecond: number | null;\n  offset: number | null;\n\n  constructor(\n    calendar: Calendar,\n    hourCycle: HourCycle,\n    dateValue?: Partial<Omit<AnyDateTime, 'copy'>> | null\n  ) {\n    this.era = dateValue?.era ?? null;\n    this.calendar = calendar;\n    this.year = dateValue?.year ?? null;\n    this.month = dateValue?.month ?? null;\n    this.day = dateValue?.day ?? null;\n    this.hour = dateValue?.hour ?? null;\n    this.hourCycle = hourCycle;\n    this.dayPeriod = null;\n    this.minute = dateValue?.minute ?? null;\n    this.second = dateValue?.second ?? null;\n    this.millisecond = dateValue?.millisecond ?? null;\n    this.offset = 'offset' in (dateValue ?? {}) ? (dateValue as any).offset : null;\n\n    // Convert the hour from 24 hour time to the given hour cycle.\n    if (this.hour != null) {\n      let [dayPeriod, hour] = toHourCycle(this.hour, hourCycle);\n      this.dayPeriod = dayPeriod;\n      this.hour = hour;\n    }\n  }\n\n  copy(): IncompleteDate {\n    let res = new IncompleteDate(this.calendar, this.hourCycle);\n    res.era = this.era;\n    res.year = this.year;\n    res.month = this.month;\n    res.day = this.day;\n    res.hour = this.hour;\n    res.dayPeriod = this.dayPeriod;\n    res.minute = this.minute;\n    res.second = this.second;\n    res.millisecond = this.millisecond;\n    res.offset = this.offset;\n    return res;\n  }\n\n  /** Checks whether all the specified segments have a value. */\n  isComplete(segments: DateSegmentType[]) {\n    return segments.every(segment => this[segment] != null);\n  }\n\n  /** Checks whether the given date value matches this value for the specified segments. */\n  validate(dt: DateValue, segments: DateSegmentType[]) {\n    return segments.every(segment => {\n      if ((segment === 'hour' || segment === 'dayPeriod') && 'hour' in dt) {\n        let [dayPeriod, hour] = toHourCycle(dt.hour, this.hourCycle);\n        return this.dayPeriod === dayPeriod && this.hour === hour;\n      }\n      return this[segment] === dt[segment];\n    });\n  }\n\n  /** Checks if the date is empty (i.e. all specified segments are null). */\n  isCleared(segments: DateSegmentType[]): boolean {\n    return segments.every(segment => this[segment] === null);\n  }\n\n  /** Sets the given field. */\n  set(field: DateSegmentType, value: number | string, placeholder: DateValue): IncompleteDate {\n    let result = this.copy();\n    result[field] = value;\n    if (field === 'hour' && result.dayPeriod == null && 'hour' in placeholder) {\n      result.dayPeriod = toHourCycle(placeholder.hour, this.hourCycle)[0];\n    }\n    if (field === 'year' && result.era == null) {\n      result.era = placeholder.era;\n    }\n\n    // clear offset when a date/time field changes since it may no longer be valid\n    if (field !== 'second' && field !== 'literal' && field !== 'timeZoneName') {\n      result.offset = null;\n    }\n    return result;\n  }\n\n  /** Sets the given field to null. */\n  clear(field: DateSegmentType): IncompleteDate {\n    let result = this.copy();\n    // @ts-ignore\n    result[field] = null;\n    if (field === 'year') {\n      result.era = null;\n    }\n\n    // clear offset when a field is cleared since it may no longer be valid\n    result.offset = null;\n    return result;\n  }\n\n  /**\n   * Increments or decrements the given field. If it is null, then it is set to the placeholder\n   * value.\n   */\n  cycle(\n    field: DateSegmentType,\n    amount: number,\n    placeholder: DateValue,\n    displaySegments: DateSegmentType[]\n  ): IncompleteDate {\n    let res = this.copy();\n\n    // If field is null, default to placeholder.\n    if (res[field] == null && field !== 'dayPeriod' && field !== 'era') {\n      if (field === 'hour' && 'hour' in placeholder) {\n        let [dayPeriod, hour] = toHourCycle(placeholder.hour, this.hourCycle);\n        res.dayPeriod = dayPeriod;\n        res.hour = hour;\n      } else {\n        res[field] = placeholder[field];\n      }\n      if (field === 'year' && res.era == null) {\n        res.era = placeholder.era;\n      }\n\n      return res;\n    }\n\n    switch (field) {\n      case 'era': {\n        let eras = this.calendar.getEras();\n        let index = eras.indexOf(res.era!);\n        index = cycleValue(index, amount, 0, eras.length - 1);\n        res.era = eras[index];\n        break;\n      }\n      case 'year': {\n        // Use CalendarDate to cycle so that we update the era when going between 1 AD and 1 BC.\n        let date = new CalendarDate(\n          this.calendar,\n          this.era ?? placeholder.era,\n          this.year ?? placeholder.year,\n          this.month ?? 1,\n          this.day ?? 1\n        );\n        date = date.cycle(field, amount, {round: field === 'year'});\n        res.era = date.era;\n        res.year = date.year;\n        break;\n      }\n      case 'month':\n        res.month = cycleValue(res.month ?? 1, amount, 1, this.calendar.getMaximumMonthsInYear());\n        break;\n      case 'day':\n        // Allow incrementing up to the maximum number of days in any month.\n        res.day = cycleValue(res.day ?? 1, amount, 1, this.calendar.getMaximumDaysInMonth());\n        break;\n      case 'hour': {\n        // if date is fully defined or it is just a time field, and we have a time zone, use toValue to get a ZonedDateTime to cycle\n        // so DST fallback is properly handled\n        let hasDateSegements = displaySegments.some(s => ['year', 'month', 'day'].includes(s));\n        if (\n          'timeZone' in placeholder &&\n          (!hasDateSegements || (res.year != null && res.month != null && res.day != null))\n        ) {\n          let date = this.toValue(placeholder) as ZonedDateTime;\n          date = date.cycle('hour', amount, {\n            hourCycle: this.hourCycle === 'h12' ? 12 : 24,\n            round: false\n          });\n          let [dayPeriod, adjustedHour] = toHourCycle(date.hour, this.hourCycle);\n          res.hour = adjustedHour;\n          res.dayPeriod = dayPeriod;\n          res.offset = date.offset;\n        } else {\n          let hours = res.hour ?? 0;\n          let limits = this.getSegmentLimits('hour')!;\n          res.hour = cycleValue(hours, amount, limits.minValue, limits.maxValue);\n          if (res.dayPeriod == null && 'hour' in placeholder) {\n            res.dayPeriod = toHourCycle(placeholder.hour, this.hourCycle)[0];\n          }\n        }\n        break;\n      }\n      case 'dayPeriod':\n        res.dayPeriod = cycleValue(res.dayPeriod ?? 0, amount, 0, 1);\n        break;\n      case 'minute':\n        res.minute = cycleValue(res.minute ?? 0, amount, 0, 59, true);\n        break;\n      case 'second':\n        res.second = cycleValue(res.second ?? 0, amount, 0, 59, true);\n        break;\n    }\n\n    return res;\n  }\n\n  /**\n   * Converts the incomplete date to a full date value, using the provided value for any unset\n   * fields.\n   */\n  toValue(value: DateValue): DateValue {\n    if ('hour' in value) {\n      let hour = this.hour;\n      if (hour != null) {\n        hour = fromHourCycle(hour, this.dayPeriod ?? 0, this.hourCycle);\n      } else if (this.hourCycle === 'h12' || this.hourCycle === 'h11') {\n        hour = this.dayPeriod === 1 ? 12 : 0;\n      }\n\n      let res = value.set({\n        era: this.era ?? value.era,\n        year: this.year ?? value.year,\n        month: this.month ?? value.month,\n        day: this.day ?? value.day,\n        hour: hour ?? value.hour,\n        minute: this.minute ?? value.minute,\n        second: this.second ?? value.second,\n        millisecond: this.millisecond ?? value.millisecond\n      });\n\n      if ('offset' in res && this.offset != null && res.offset !== this.offset) {\n        res = res.add({milliseconds: res.offset - this.offset});\n      }\n\n      return res;\n    } else {\n      return value.set({\n        era: this.era ?? value.era,\n        year: this.year ?? value.year,\n        month: this.month ?? value.month,\n        day: this.day ?? value.day\n      });\n    }\n  }\n\n  getSegmentLimits(\n    type: string\n  ): {value: number | null; minValue: number; maxValue: number} | undefined {\n    switch (type) {\n      case 'era': {\n        let eras = this.calendar.getEras();\n        return {\n          value: this.era != null ? eras.indexOf(this.era) : eras.length - 1,\n          minValue: 0,\n          maxValue: eras.length - 1\n        };\n      }\n      case 'year':\n        return {\n          value: this.year,\n          minValue: 1,\n          maxValue: 9999\n        };\n      case 'month':\n        return {\n          value: this.month,\n          minValue: 1,\n          maxValue: this.calendar.getMaximumMonthsInYear()\n        };\n      case 'day':\n        return {\n          value: this.day,\n          minValue: 1,\n          maxValue: this.calendar.getMaximumDaysInMonth()\n        };\n      case 'dayPeriod': {\n        return {\n          value: this.dayPeriod,\n          minValue: 0,\n          maxValue: 1\n        };\n      }\n      case 'hour': {\n        let minValue = 0;\n        let maxValue = 23;\n        if (this.hourCycle === 'h12') {\n          minValue = 1;\n          maxValue = 12;\n        } else if (this.hourCycle === 'h11') {\n          minValue = 0;\n          maxValue = 11;\n        }\n\n        return {\n          value: this.hour,\n          minValue,\n          maxValue\n        };\n      }\n      case 'minute':\n        return {\n          value: this.minute,\n          minValue: 0,\n          maxValue: 59\n        };\n      case 'second':\n        return {\n          value: this.second,\n          minValue: 0,\n          maxValue: 59\n        };\n    }\n  }\n}\n\nfunction cycleValue(value: number, amount: number, min: number, max: number, round = false) {\n  if (round) {\n    value += Math.sign(amount);\n\n    if (value < min) {\n      value = max;\n    }\n\n    let div = Math.abs(amount);\n    if (amount > 0) {\n      value = Math.ceil(value / div) * div;\n    } else {\n      value = Math.floor(value / div) * div;\n    }\n\n    if (value > max) {\n      value = min;\n    }\n  } else {\n    value += amount;\n    if (value < min) {\n      value = max - (min - value - 1);\n    } else if (value > max) {\n      value = min + (value - max - 1);\n    }\n  }\n\n  return value;\n}\n\nfunction toHourCycle(hour: number, hourCycle: HourCycle): [number | null, number] {\n  let dayPeriod: number | null = hour >= 12 ? 1 : 0;\n  switch (hourCycle) {\n    case 'h11':\n      // Hours are numbered from 0 to 11. Used in Japan.\n      if (hour >= 12) {\n        hour -= 12;\n      }\n      break;\n    case 'h12':\n      // Hours are numbered from 12 (representing 0) to 11.\n      if (hour === 0) {\n        hour = 12;\n      } else if (hour > 12) {\n        hour -= 12;\n      }\n      break;\n    case 'h23':\n      // 24 hour time, numbered 0 to 23.\n      dayPeriod = null;\n      break;\n    case 'h24':\n      // 24 hour time numbered 24 to 23. Unused but supported by Intl.DateTimeFormat.\n      hour += 1;\n      dayPeriod = null;\n  }\n\n  return [dayPeriod, hour];\n}\n\nfunction fromHourCycle(hour: number, dayPeriod: number, hourCycle: HourCycle): number {\n  switch (hourCycle) {\n    case 'h11':\n      if (dayPeriod === 1) {\n        hour += 12;\n      }\n      break;\n    case 'h12':\n      if (hour === 12) {\n        hour = 0;\n      }\n      if (dayPeriod === 1) {\n        hour += 12;\n      }\n      break;\n    case 'h24':\n      hour -= 1;\n      break;\n  }\n\n  return hour;\n}\n"],"names":[],"version":3,"file":"IncompleteDate.mjs.map"}