Struct DatePickerStrings 

pub struct DatePickerStrings {

    pub months: [&'static str; 12],
    pub month_abbreviations: [&'static str; 12],
    pub weekday_initials: [&'static str; 7],
    pub weekday_abbreviations: [&'static str; 7],
    pub first_day_of_week: u32,
    pub help_text: &'static str,
    pub no_date_selected: &'static str,
    pub cancel_label: &'static str,
    pub confirm_label: &'static str,
    pub field_label: &'static str,
    pub field_hint: &'static str,
    pub error_format: &'static str,
    pub error_invalid: &'static str,
    pub previous_month: &'static str,
    pub next_month: &'static str,
    pub select_year: &'static str,
    pub input_mode: &'static str,
    pub calendar_mode: &'static str,
}

Every user-visible string and the first-day-of-week index the date-picker family reads.

Copy and &'static str-valued, so a widget holds one by value with no allocation. Override by struct update:

use frust_material::DatePickerStrings;

const FRENCH: DatePickerStrings = DatePickerStrings {
    months: [
        "janvier", "février", "mars", "avril", "mai", "juin",
        "juillet", "août", "septembre", "octobre", "novembre", "décembre",
    ],
    first_day_of_week: 1, // Monday
    cancel_label: "Annuler",
    ..DatePickerStrings::ENGLISH
};
assert_eq!(FRENCH.months[0], "janvier");
assert_eq!(FRENCH.confirm_label, "OK");

See the module docs’ localization note for why this replaces the reference’s MaterialLocalizations lookup, and what it does not cover (the mm/dd/yyyy input format).

Fields

months: [&'static str; 12]

Full month names, January first (M3ECalendarLabels.months).

month_abbreviations: [&'static str; 12]

Abbreviated month names, January first — the MMM field of Self::medium_date.

weekday_initials: [&'static str; 7]

One-letter weekday headers, Sunday first regardless of Self::first_day_of_week (M3ECalendarLabels.weekdayInitials / MaterialLocalizations.narrowWeekdays).

weekday_abbreviations: [&'static str; 7]

Abbreviated weekday names, Sunday first — the EEE field of Self::medium_date.

first_day_of_week: u32

Which weekday a week starts on: 0 Sunday .. 6 Saturday (MaterialLocalizations.firstDayOfWeekIndex).

help_text: &'static str

The dialog header’s help line (datePickerHelpText).

no_date_selected: &'static str

The dialog headline shown before any date is picked (unspecifiedDate).

cancel_label: &'static str

The dialog’s dismiss action (cancelButtonLabel).

confirm_label: &'static str

The dialog’s confirm action (okButtonLabel).

field_label: &'static str

The input field’s label (dateInputLabel).

field_hint: &'static str

The input field’s supporting/hint line (dateHelpText).

error_format: &'static str

The error for text that is not a date at all (invalidDateFormatLabel).

error_invalid: &'static str

The error for a real date outside the selectable bounds (invalidDateRangeLabel).

previous_month: &'static str

The previous-month affordance’s accessibility label (previousMonthTooltip).

next_month: &'static str

The next-month affordance’s accessibility label (nextMonthTooltip).

select_year: &'static str

The year-selector toggle’s accessibility label (selectYearSemanticsLabel).

input_mode: &'static str

The switch-to-input affordance’s accessibility label (inputDateModeButtonLabel).

calendar_mode: &'static str

The switch-to-calendar affordance’s accessibility label (calendarModeButtonLabel).

Implementations

impl DatePickerStrings

pub const ENGLISH: Self

Flutter MaterialLocalizations’ own en_US values — what the reference resolves on an English device, and what M3ECalendarLabels’s hard-coded fallback table already carries.

pub fn weekday_initial(&self, column: usize) -> &'static str

The header initial for grid column column (0 = the leftmost), which Self::first_day_of_week rotates — the reference’s narrowWeekdays[(firstDayOfWeekIndex + i) % 7].

pub fn month_year(&self, date: MaterialDate) -> String

"March 2026" — MaterialLocalizations.formatMonthYear.

pub fn year(&self, year: i32) -> String

"2026" — MaterialLocalizations.formatYear.

pub fn medium_date(&self, date: MaterialDate) -> String

"Thu, Aug 20" — MaterialLocalizations.formatMediumDate’s en_US EEE, MMM d pattern, which is what the dialog headline shows.

Trait Implementations

impl Clone for DatePickerStrings

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for DatePickerStrings

impl Debug for DatePickerStrings

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DatePickerStrings

fn default() -> Self

Returns the “default value” for a type.

impl Eq for DatePickerStrings

impl PartialEq for DatePickerStrings

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for DatePickerStrings