material_drum_picker 1.7.0

A Material 3 date picker with an iOS-style drum roller, full API parity with showDatePicker and CupertinoDatePicker, and drum, calendar and input modes.

Changelog

1.7.0

• Working days only. New optional disabledWeekdays makes the given weekdays unselectable in every mode, using the DateTime.weekday convention. For a working days only picker pass the weekend, for example {DateTime.saturday, DateTime.sunday} (or {DateTime.friday, DateTime.saturday} in much of the Middle East).
• Holidays. New optional holidays (a Set<DateTime>) marks specific dates as unselectable, compared by calendar day and ignoring the time component.
• First day of the week. New optional firstDayOfWeek overrides the locale's start of week in calendar mode (DateTime.monday to DateTime.sunday).
• disabledWeekdays, holidays, and selectableDayPredicate combine: a day is selectable only when it passes all of them, consistently across the drum, calendar, and input modes. The opening date snaps to the nearest selectable day, so a default that lands on a weekend or holiday does not start disabled.
• All three options are available on DrumPicker, showDrumDatePicker, and showDrumDateTimePicker, and all are optional with no change to existing behavior.

1.6.0

• Chinese lunisolar calendar. Pass calendar: DrumCalendarType.chinese to present the drum, calendar, and input modes in the Chinese calendar. It fully supports leap months (a leap year has 13 months, with the leap month 闰月 repeating the previous month's number), astronomically determined month lengths (29 or 30 days), traditional month names (正月 ... 十二月, 闰二月), and the sexagenary year with its zodiac animal (for example 癸卯, Rabbit) shown under the headline. The returned value is always a Gregorian DateTime.
• The month length and leap month data is computed from the BSD licensed sxtwl astronomical engine, cross validated against a second engine, and vendored as a pure Dart table (lunar years 1900-2100), so the package keeps its only runtime dependencies as Flutter and intl. No third party engine is shipped.
• New public type ChineseCalendarSystem, and DrumCalendarType.chinese.
• Core calendar API additions (non breaking): CalendarDate.isLeapMonth, DrumCalendarSystem.monthsInYear, monthLabel, and yearAnnotation, with defaults that leave the Gregorian and Hijri calendars unchanged. Custom DrumCalendarSystem implementations with leap months or a variable month count are now possible.

1.5.0

• Month as a name or a number. New monthFormat parameter (DrumMonthFormat.name or .numeric) switches the drum month column between the abbreviated month name (the default) and a zero padded number. It works with every calendar system and locale, since a numeric month is just the month index in the locale's digits.
• Configurable typed date format. New inputFormat parameter takes a DrumDateFormat that controls the keyboard input mode: the order of the day, month, and year fields, the separator, and whether the year is two or four digits. Build one from a pattern with DrumDateFormat.parse('DD-MM-YYYY'), or use a preset (DrumDateFormat.mdy, .dmy, .ymd). The format drives the field's value, hint, and parsing in whatever calendar the picker is using, and a two digit year is resolved into the supported range at the year nearest the current selection.
• Both additions default to the previous behavior (month names and MM/DD/YYYY) and are available on DrumPicker, showDrumDatePicker, and showDrumDateTimePicker. Existing output is unchanged.

1.4.0

• Deep visual theming. DrumPickerTheme gains a much larger token set: typography (headlineTextStyle, helpTextStyle, secondaryTextStyle, columnLabelTextStyle, selectedItemTextStyle, unselectedItemTextStyle), the calendar grid colors that were previously hard coded (dayForegroundColor, selectedDayBackgroundColor, selectedDayForegroundColor, todayColor, disabledDayColor), and shape and spacing (dayShape, selectorBandRadius, headerPadding). Text style tokens merge over the defaults, so you can change one field (for example the weight) without losing the themed color.
• Per-instance theming. DrumPicker, DrumTimePicker, and the showDrum*Picker functions take a new theme parameter. It is merged over any ambient DrumPickerTheme extension, so you can style a single picker without touching the app theme. The calendar grid now honors the theme tokens too (previously it always used the raw ColorScheme).
• Overridable labels. New DrumPickerLabels lets you translate or relabel the fixed UI strings that were not otherwise localized: the drum column headers (DAY, MONTH, YEAR), the time strip headers (HOUR, MIN, AM/PM), the mode toggle (Calendar, Drum, Input), and the default quick select chips.
• Custom input decoration. A new inputDecoration parameter lets the input mode field inherit your app's InputDecorationTheme or a custom decoration.
• Fully backward compatible: every new token and parameter defaults to the previous appearance and behavior, so existing output is unchanged.

1.3.0

• Hijri (Umm al-Qura) calendar. Pass calendar: DrumCalendarType.hijri to show the drum, calendar, and input modes in the lunar Hijri calendar, fully composed with the existing right to left support. The returned value is still a Gregorian DateTime. The Umm al-Qura table is vendored as pure Dart, so the package keeps its only runtime dependencies as Flutter and intl.
• Pluggable data backed calendars. New TabularLunarCalendarSystem lets you drive the picker from a published dataset of Hijri month start dates (for an official or committee lunar calendar). Pass an instance through the new calendarSystem parameter, which takes precedence over calendar. The package ships only the mechanism and a documented schema, never any specific publisher's data. Malformed datasets are rejected rather than producing wrong dates.
• New public types: DrumCalendarType, DrumCalendarSystem, GregorianCalendarSystem, HijriCalendarSystem, TabularLunarCalendarSystem, TabularLunarMonth, and CalendarDate.
• New showGregorianAlongside flag (off by default) renders the Gregorian equivalent as a small secondary line in the header.
• Day, month, and year numbers now route through one locale aware numeral path, so a locale that uses Arabic-Indic digits renders them consistently across the drum, calendar, input, and header.
• No breaking changes. Every new parameter defaults to the previous Gregorian behavior, and all existing tests and goldens pass unchanged.

1.2.0

• Time-only picking. New DrumTimePicker widget and showDrumTimePicker function that return a TimeOfDay. Configurable for AM/PM (12 hour) or 24 hour mode via use24hFormat (which falls back to MediaQuery.alwaysUse24HourFormat), with minuteInterval granularity.
• Example app gains a "Time only" screen (12 hour dialog, 24 hour dialog with 5 minute steps, and an inline 15 minute picker).
• README rewritten and expanded: a pickers overview table plus dedicated date+time and time-only screenshots.

1.1.0

• Date + time picking. DrumPicker gains pickTime, use24hFormat, and minuteInterval. When pickTime is true, a compact time drum strip (hour, minute, and AM/PM in 12-hour mode) appears below the date selector and the confirmed value includes the chosen time.
• New showDrumDateTimePicker convenience function, the same API as showDrumDatePicker but returns a DateTime that carries the time.
• use24hFormat falls back to MediaQuery.alwaysUse24HourFormat; AM/PM labels and the header time are localized. minuteInterval snaps the initial minute and is asserted to divide 60.

1.0.0

Initial release.

• showDrumDatePicker, a drop-in replacement for Flutter's showDatePicker with full parameter parity (firstDate, lastDate, initialDate, currentDate, selectableDayPredicate, helpText, confirmText, cancelText, errorFormatText, errorInvalidText, fieldHintText, fieldLabelText, locale, textDirection, barrierDismissible, barrierColor, barrierLabel, useRootNavigator, routeSettings, restorationId, anchorPoint, builder).
• DrumPicker inline widget for embedding in forms (no dialog).
• Three context-aware input modes: drum, calendar, and input, with a mode toggle.
• selectableDayPredicate enforced in all three modes, including nearest-valid-date snapping in drum mode.
• Quick-select chips with quickSelectOptions and DrumQuickSelect.relative.
• Configurable columnOrder (dmy / mdy / ymd / ydm) with locale-aware defaults, plus showDayOfWeekInDrum.
• DrumPickerTheme extension for Material 3 token overrides.
• Full RTL and localization support via intl and flutter_localizations.
• showDrumDateRangePicker API stub (throws UnimplementedError; full implementation planned for 1.1.0).