Times and zones

Date and Time Field for Slint

KitDateTimeField · Slint Kit 0.3.1

Two text drafts accepted as one local date and time.

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Try the component

Download the complete project, extract it and run cargo run --locked in its folder. Rust 1.92+; Slint Kit 0.3.0 from crates.io. You can also copy the four files below.

Edit both fields, then accept. Rust validates and accepts one complete LocalDateTime; it never accepts half a date/time pair.

ui/app.slint

export { KitFormValidation, HtmlInputKind, NumberInputFormat, KitInputConstraints, KitValidationResult, KitValidityState } from "@kit/kit.slint";
import {KitDateTimeField,KitButton,KitThemes,CivilDateView,LocalTimeView,LocalDateTimeView,LocalDateTimeDraft,ZonedDateTimeDraft,ZonedTimePresentation,AmbiguousTimeChoice} from "@kit/kit.slint";
export {CivilDateView,LocalTimeView,LocalDateTimeView,LocalDateTimeDraft,ZonedDateTimeDraft,ZonedTimePresentation,AmbiguousTimeChoice}
export component App inherits Window {
 title:"date-time-field";preferred-width:560px;preferred-height:440px;max-width:100000px;max-height:100000px;background:KitThemes.light.canvas;
 in-out property <string> date-text:"2026-10-17";in-out property <string> time-text:"09:30";in-out property <string> zone-text:"America/Toronto";
 in property <LocalDateTimeView> accepted-local;in property <string> error;in property <string> accepted;
 in property <ZonedTimePresentation> resolution;callback commit(LocalDateTimeDraft);callback edit();callback choose(AmbiguousTimeChoice);callback cancel();
 VerticalLayout {padding:24px;spacing:16px;alignment:start;
 control:=KitDateTimeField{label:"Appointment";date-text<=>root.date-text;time-text<=>root.time-text;date-error:root.error;
 accepted-value:root.accepted-local;commit-requested(draft)=>{root.commit(draft);}
 edited(draft)=>{root.edit();}cancelled=>{root.cancel();}
 }
 KitButton{text:"Accept";activated=>{root.commit({date:root.date-text,time:root.time-text});}}
 Text{text:"Accepted: "+root.accepted;color:KitThemes.light.text-primary;wrap:word-wrap;}
 }
}

src/main.rs

use slint::ComponentHandle;
use slint_kit::{CivilDate, DraftValue, LocalDateTime, LocalTime, TimePrecision};
use std::{cell::RefCell, rc::Rc};
mod ui {
    slint::include_modules!();
}
fn local(date: &str, time: &str) -> Option<LocalDateTime> {
    match (
        CivilDate::parse_iso(date),
        LocalTime::parse(time, TimePrecision::Minute),
    ) {
        (DraftValue::Parsed(date), DraftValue::Parsed(time)) => {
            Some(LocalDateTime::new(date, time))
        }
        _ => None,
    }
}
fn view(value: LocalDateTime) -> ui::LocalDateTimeView {
    ui::LocalDateTimeView {
        date: ui::CivilDateView {
            year: value.date.year(),
            month: value.date.month() as i32,
            day: value.date.day() as i32,
        },
        time: ui::LocalTimeView {
            hour: value.time.hour() as i32,
            minute: value.time.minute() as i32,
            second: value.time.second() as i32,
        },
    }
}
fn main() -> Result<(), slint::PlatformError> {
    let app = ui::App::new()?;
    slint_kit::init_form_validation!(ui, app);
    let initial = local("2026-10-17", "09:30").unwrap();
    app.set_accepted_local(view(initial));
    app.set_accepted("2026-10-17 09:30".into());
    let state = Rc::new(RefCell::new(initial));
    let weak = app.as_weak();
    let shared = state.clone();
    app.on_commit(move |draft| {
        if let Some(app) = weak.upgrade() {
            let Some(value) = local(&draft.date, &draft.time) else {
                app.set_error("Use a valid YYYY-MM-DD date and HH:mm time".into());
                return;
            };
            *shared.borrow_mut() = value;
            app.set_accepted_local(view(value));
            app.set_error("".into());
            app.set_accepted(
                format!(
                    "{} {}",
                    value.date.iso_string(),
                    value.time.format(
                        TimePrecision::Minute,
                        slint_kit::ClockFormat::TwentyFourHour
                    )
                )
                .into(),
            );
        }
    });
    let weak = app.as_weak();
    app.on_edit(move || {
        if let Some(app) = weak.upgrade() {
            app.set_error("".into());
        }
    });
    let weak = app.as_weak();
    let shared = state.clone();
    app.on_cancel(move || {
        if let Some(app) = weak.upgrade() {
            let value = *shared.borrow();
            app.set_date_text(value.date.iso_string().into());
            app.set_time_text(
                value
                    .time
                    .format(
                        TimePrecision::Minute,
                        slint_kit::ClockFormat::TwentyFourHour,
                    )
                    .into(),
            );
            app.set_error("".into());
        }
    });

    app.run()
}

[package]
name = "slint-kit-date-time-field-example"
version = "0.1.0"
edition = "2024"
rust-version = "1.92"
license = "GPL-3.0-or-later"
publish = false

[dependencies]
slint-kit = "=0.3.0"
slint = { version = "=1.18.1", default-features = false, features = ["std", "compat-1-18", "backend-winit", "renderer-skia", "accessibility"] }

[build-dependencies]
slint-kit-build = "=0.3.0"

[workspace]

fn main() {
    slint_kit_build::compile("ui/app.slint").expect("compile component example");
}

Files: Cargo.toml · build.rs · ui/app.slint · src/main.rs

Parse the date as YYYY-MM-DD and time as 24-hour HH:MM, then build LocalDateTime only when both are valid.

Commit is atomic: an invalid part leaves the accepted pair unchanged. This value has no time zone.

View source ↗

Choose between built-in options and custom composition

Shared options

• label — built-in property; custom composition example

Visual composition

The file below produces the screenshot. For controller-driven components, it shows the displayed state without supplying the Rust wiring. Create a project.

Show the screenshot source

// SPDX-License-Identifier: GPL-3.0-or-later
// Display projections are fixtures. Validate accepted domain values in Rust.
import { KitDateTimeField, KitTheme, KitThemes } from "@kit/kit.slint";

export component Example inherits Window {
    title: "KitDateTimeField example";
    preferred-width: 440px;
    preferred-height: 290px;
    max-width: 100000px;
    max-height: 100000px;
    background: root.theme.canvas;
    in-out property <KitTheme> theme: KitThemes.light;
    in-out property <string> status;
    VerticalLayout {
        padding: 24px; spacing: 16px; alignment: start;
        Text { text: "Date Time Field"; color: root.theme.text-primary; font-size: 20px * root.theme.text-scale; font-weight: 600; }
        KitDateTimeField { theme: root.theme; label: "Meeting"; date-text: "2026-10-17"; time-text: "09:30"; }
        if root.status != "": Text { text: root.status; color: root.theme.text-secondary; font-size: 12px * root.theme.text-scale; wrap: word-wrap; }
    }
}

Download this example

Public API

Inherits Rectangle.

Properties

Types and variants

Callbacks

• invalid()
• edited(LocalDateTimeDraft)
• commit-requested(LocalDateTimeDraft)
• cancelled()
• focus-observed(bool)

Functions

• check-validity() → bool
• report-validity() → bool
• set-custom-validity(message: string)
• reset-validation()
• take-focus()

See also

• Date Field
• Time Field
• Zoned Date and Time Field