Selection

Select for Slint

KitSelect · Slint Kit 0.3.0

Popup selector with search, keyboard navigation and virtualized options.

Run preview

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.

Choose Activity: Rust keeps Destination::Activity and updates the selected label.

ui/app.slint

export { KitFormValidation, HtmlInputKind, NumberInputFormat, KitInputConstraints, KitValidationResult, KitValidityState } from "@kit/kit.slint";
// SPDX-License-Identifier: GPL-3.0-or-later
import { KitSelect, OptionRow, SelectState, NavigationStep, CloseReason, SelectionAvailability, KitTheme, KitThemes } from "@kit/kit.slint";
export component App inherits Window {
    title: "KitSelect example";
    preferred-width: 520px;
    preferred-height: 420px;
    max-width: 100000px;
    max-height: 100000px;
    background: root.theme.canvas;
    in-out property <KitTheme> theme: KitThemes.light;
    in property <[OptionRow]> rows;
    in property <SelectState> select-state;
    in property <string> selected-label: "Overview";
    in-out property <string> query;
    callback select-open();
    callback select-navigate(NavigationStep);
    callback select-activate(int, int);
    callback select-dismiss(CloseReason);
    callback select-query(string);
    callback select-typeahead(string);
    VerticalLayout {
        padding: 24px;
        spacing: 16px;
        alignment: start;
        control := KitSelect {
            theme: root.theme; rows: root.rows; state: root.select-state;
            placeholder: root.selected-label;
            open-requested => { root.select-open(); }
            navigate(step) => { root.select-navigate(step); }
            activate(token, generation) => { root.select-activate(token, generation); }
            dismiss(reason) => { root.select-dismiss(reason); }
            typeahead(text) => { root.select-typeahead(text); }
            query-edited(text) => { root.select-query(text); }
            tab-navigation(reverse) => { return reject; }
        }
        result := Text { text: "Selected: " + root.selected-label; color: root.theme.text-primary; }
    }

}

src/main.rs

// SPDX-License-Identifier: GPL-3.0-or-later
use slint::ComponentHandle;
use slint_kit::{Ownership, SelectOption, SelectionIntent};
#[derive(Clone, Copy, PartialEq, Eq, Hash)]
enum Destination { Overview, Activity, Settings }
impl Destination {
    fn label(self) -> &'static str {
        match self { Self::Overview => "Overview", Self::Activity => "Activity", Self::Settings => "Settings" }
    }
}

mod ui { slint::include_modules!(); }
fn main() -> Result<(), slint::PlatformError> {
    let app = ui::App::new()?;
    slint_kit::init_form_validation!(ui, app);
    let selection = slint_kit::bind_select!(ui, app, vec![
        SelectOption::new(Destination::Overview, "Overview"),
        SelectOption::new(Destination::Activity, "Activity"),
        SelectOption::new(Destination::Settings, "Settings"),
    ], Some(Destination::Overview), Ownership::Local);
    let weak = app.as_weak();
    selection.on_intent(move |intent| {
        if let Some(app) = weak.upgrade() {
            app.set_selected_label(match intent {
                SelectionIntent::Commit(key) => key.label(),
                SelectionIntent::Clear => "No selection",
            }.into());
        }
    });
    app.run()
}

[package]
name = "slint-kit-select-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

Provide rows and state from SelectBinding or a selection controller, then forward navigation, opening and activation callbacks. Put the selected label in placeholder, which supplies the trigger text.

Activation carries token and generation; the controller acknowledges selection and handles disabled options. SelectionAvailability.unavailable signals an unavailable choice, and tab-navigation lets the host advance focus after closing.

View source ↗

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
import { KitSelect, KitTheme, KitThemes, SelectionAvailability } from "@kit/kit.slint";

export component Example inherits Window {
    title: "KitSelect example";
    preferred-width: 420px;
    preferred-height: 180px;
    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: "Select"; color: root.theme.text-primary; font-size: 20px * root.theme.text-scale; font-weight: 600; }
        KitSelect { theme: root.theme; placeholder: "Overview"; rows: [{ token: 11, generation: 1, label: "Overview", description: "Project summary", disabled: false }, { token: 23, generation: 1, label: "Activity", description: "Recent changes", disabled: false }, { token: 38, generation: 1, label: "Settings", description: "Project preferences", disabled: false }]; state: { open: false, generation: 1, active-index: 0, active: { present: true, token: 11 }, selected: { present: true, token: 11 }, selection-availability: SelectionAvailability.available }; activate(token, generation) => { root.status = "Activated stable token " + token; } }
        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()
• open-requested()
• navigate(NavigationStep)
• activate(int, int)
• dismiss(CloseReason)
• typeahead(string)
• tab-navigation(bool) → EventResult
• query-edited(string)

Functions

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

See also

• Searchable combobox
• Multi Select
• Select Surface