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0 2 4 6 7 9 11\n// 30? 3 5 8 10\n// Feb? 1\n// Su Mo Tu We Th Fr Sa startDay - _firstDayOfWeek\n// 1 2 5 - 0 < 0 ? 6 : 5 - 0;\n// Mo Tu We Th Fr Sa Su\n// 1 2 3 5 - 1 < 0 ? 6 : 5 - 1;\n// Tu We Th Fr Sa Su Mo\n// 1 2 3 4 5 - 2 < 0 ? 6 : 5 - 2;\n// We Th Fr Sa Su Mo Tu\n// 1 2 3 4 5 5 - 3 < 0 ? 6 : 5 - 3;\n// Th Fr Sa Su Mo Tu We\n// 1 2 3 4 5 6 5 - 4 < 0 ? 6 : 5 - 4;\n// Fr Sa Su Mo Tu We Th\n// 1 2 3 4 5 6 7 5 - 5 < 0 ? 6 : 5 - 5;\n// Sa Su Mo Tu We Th Fr\n// 1 5 - 6 < 0 ? 6 : 5 - 6;\nexport function calendar(options: CalendarOptions): Calendar {\n const {\n dayFormat,\n fullDateFormat,\n locale = 'en-US',\n selectedDate,\n\n disabledDates = [],\n disabledDays = [],\n firstDayOfWeek = 0,\n max,\n min,\n showWeekNumber = false,\n weekLabel = 'Week',\n weekNumberType = 'first-4-day-week',\n }: CalendarOptions = options || {};\n\n const firstDayOfWeek2 = toValidWeekday(firstDayOfWeek);\n\n const dateYear = selectedDate.getUTCFullYear();\n const dateMonth = selectedDate.getUTCMonth();\n const firstDateOfMonth = toUTCDate(dateYear, dateMonth, 1);\n\n const disabledDaysSet = new Set(\n disabledDays.map(n => normalizeWeekday(n, firstDayOfWeek2, showWeekNumber))\n );\n const disabledDatesSet = new Set(disabledDates.map(n => +n));\n const calendarKey = [\n firstDateOfMonth.toJSON(),\n firstDayOfWeek2,\n locale,\n null == max ? '' : max.toJSON(),\n null == min ? '' : min.toJSON(),\n Array.from(disabledDaysSet).join(','),\n Array.from(disabledDatesSet).join(','),\n weekNumberType,\n ].filter(Boolean).join(':');\n\n const firstDayOfWeekOffset =\n normalizeWeekday(firstDateOfMonth.getDay(), firstDayOfWeek2, showWeekNumber);\n const minTime = null == min ? +new Date('2000-01-01') : +min;\n const maxTime = null == max ? +new Date('2100-12-31') : +max;\n const colNum = showWeekNumber ? 8 : 7;\n const totalDays = toUTCDate(dateYear, 1 + dateMonth, 0).getUTCDate();\n const rows: CalendarDay[][] = [];\n\n let cols: CalendarDay[] = [];\n let calendarComplete = false;\n let curDay = 1;\n\n /**\n * This would be constant since there are only in total of 6x7 cells in calendar month.\n * Only some cells will be filled with day depends on the value of `totalDays`.\n * Others will be empty (not-filled cells).\n */\n for (const row of [0, 1, 2, 3, 4, 5]) {\n for (const col of ([0, 1, 2, 3, 4, 5, 6].concat(colNum === 7 ? [] : [7]))) {\n const idx = col + (row * colNum);\n\n // Week label when week number needs to be shown\n if (!calendarComplete && showWeekNumber && col === 0) {\n const weekNumberOffset = row < 1 ? firstDayOfWeek2 : 0;\n\n const weekNumber = getWeekNumber(\n weekNumberType,\n toUTCDate(dateYear, dateMonth, curDay - weekNumberOffset)\n );\n const wkLabel = `${weekLabel} ${weekNumber}`;\n\n cols.push({\n fullDate: null,\n label: wkLabel,\n value: `${weekNumber}`,\n key: `${calendarKey}:${wkLabel}`,\n disabled: true,\n });\n\n continue;\n }\n\n // Empty days before and after the actual calendar days of the month\n if (calendarComplete || idx < firstDayOfWeekOffset) {\n cols.push({\n fullDate: null,\n label: '',\n value: '',\n key: `${calendarKey}:${idx}`,\n disabled: true,\n });\n\n continue;\n }\n\n const curDate = toUTCDate(dateYear, dateMonth, curDay);\n const curTime = +curDate;\n const isDisabledDay =\n disabledDaysSet.has(col) ||\n disabledDatesSet.has(curTime) ||\n (curTime < minTime || curTime > maxTime);\n\n if (isDisabledDay) disabledDatesSet.add(curTime);\n\n cols.push({\n fullDate: curDate,\n /** NOTE: Stripping LTR mark away for x-browser compatibilities and consistency reason */\n label: fullDateFormat(curDate),\n value: dayFormat(curDate),\n key: `${calendarKey}:${curDate.toJSON()}`,\n disabled: isDisabledDay,\n });\n\n curDay += 1;\n\n if (curDay > totalDays) calendarComplete = true;\n }\n\n rows.push(cols);\n cols = [];\n }\n\n return {\n disabledDatesSet,\n calendar: rows,\n disabledDaysSet: new Set(disabledDays.map(n => toValidWeekday(n))),\n key: calendarKey,\n };\n}\n"]} |