Sélecteur de dossier pour Slint

KitDirectoryPicker · Slint Kit 0.3.0

Actions Parcourir et Effacer pour un dossier sélectionné.

Les dialogues de fichiers et le dépôt depuis le système nécessitent l’application native ci-dessous.

Essayer le composant

Télécharger le projet complet, le décompresser et lancer cargo run --locked dans son dossier. Rust 1.92+ ; Slint Kit 0.3.0 depuis crates.io. Vous pouvez aussi copier les quatre fichiers ci-dessous.

Choisissez un vrai dossier de manière asynchrone puis effacez la sélection. Rust conserve DirectoryHandle et traite l’annulation ou une plateforme non prise en charge.

ui/app.slint

export { KitFormValidation, HtmlInputKind, NumberInputFormat, KitInputConstraints, KitValidationResult, KitValidityState } from "@kit/kit.slint";
import {KitDirectoryPicker,KitThemes,HostRequestPresentation} from "@kit/kit.slint";
export {HostRequestPresentation}
export component App inherits Window{
 title:"Directory picker";preferred-width:540px;preferred-height:320px;max-width:100000px;max-height:100000px;background:KitThemes.light.canvas;
 in property <string> selected;in property <string> error;in property <HostRequestPresentation> request-state;callback browse();callback clear();
 VerticalLayout{padding:24px;spacing:16px;alignment:start;control:=KitDirectoryPicker{label:"Project folder";selected-name:root.selected;error:root.error;request-state:root.request-state;browse-requested=>{root.browse();}clear-requested=>{root.clear();}}}
}

src/main.rs

use slint::ComponentHandle;
use slint_kit::{
    DirectoryHandle, DirectoryRequest, HostCapability, HostError, HostRequestController,
    SelectionOutcome,
};
use std::{cell::RefCell, rc::Rc};
mod ui {
    slint::include_modules!();
}
fn fail(app: &ui::App, error: HostError) {
    app.set_request_state(if error == HostError::Unsupported {
        ui::HostRequestPresentation::Unsupported
    } else {
        ui::HostRequestPresentation::Failed
    });
    app.set_error(format!("{error:?}").into());
}
fn main() -> Result<(), slint::PlatformError> {
    let app = ui::App::new()?;
    slint_kit::init_form_validation!(ui, app);
    let selected = Rc::new(RefCell::new(None::<DirectoryHandle>));
    let requests = Rc::new(RefCell::new(
        HostRequestController::<DirectoryHandle>::default(),
    ));
    if slint_kit::native::capabilities().directories == HostCapability::Unsupported {
        app.set_request_state(ui::HostRequestPresentation::Unsupported);
    }
    let weak = app.as_weak();
    let shared = requests.clone();
    let folder = selected.clone();
    app.on_browse(move || {
        let Some(app) = weak.upgrade() else {
            return;
        };
        let ticket = shared.borrow_mut().begin();
        app.set_request_state(ui::HostRequestPresentation::Pending);
        app.set_error("".into());
        let weak_async = weak.clone();
        let shared_async = shared.clone();
        let folder = folder.clone();
        if slint::spawn_local(async move {
            let outcome = slint_kit::native::pick_directory(DirectoryRequest {
                title: Some("Choose a project folder".into()),
            })
            .await;
            let Some(app) = weak_async.upgrade() else {
                return;
            };
            let mut request = shared_async.borrow_mut();
            if !request.finish(ticket, outcome) {
                return;
            }
            match request.take_result().unwrap() {
                SelectionOutcome::Selected(value) => {
                    app.set_selected(value.display_name.as_str().into());
                    *folder.borrow_mut() = Some(value);
                    app.set_request_state(ui::HostRequestPresentation::Idle);
                }
                SelectionOutcome::Cancelled => {
                    app.set_request_state(ui::HostRequestPresentation::Cancelled)
                }
                SelectionOutcome::Failed(error) => fail(&app, error),
            }
        })
        .is_err()
        {
            shared.borrow_mut().cancel();
            fail(&app, HostError::Unavailable);
        }
    });
    let weak = app.as_weak();
    app.on_clear(move || {
        if let Some(app) = weak.upgrade() {
            requests.borrow_mut().cancel();
            *selected.borrow_mut() = None;
            app.set_selected("".into());
            app.set_error("".into());
            app.set_request_state(ui::HostRequestPresentation::Idle);
        }
    });
    app.run()
}

Cargo.toml et build.rs

Cargo.toml

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

[dependencies]
slint-kit = { version = "=0.3.0", features = ["native"] }
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]

build.rs

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

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

Activez la fonctionnalité native du kit et attendez native::pick_directory. Conservez DirectoryHandle en Rust et publiez son nom.

L’annulation conserve le dossier accepté. Effacer retire la sélection ; les plateformes non prises en charge affichent un état explicite.

Voir le code source ↗

Choisir entre une option intégrée et une composition personnalisée

Options partagées

label — propriété intégrée ; exemple de composition personnalisé
error — propriété intégrée ; exemple de composition personnalisé

Composition visuelle

Le fichier ci-dessous produit la capture. Pour les composants pilotés par un contrôleur, il montre l’état affiché sans fournir le branchement Rust. Créer un projet.

Afficher le fichier de la capture

// Public label overrides localize this fixture; toolkit/host defaults keep their language.
// SPDX-License-Identifier: GPL-3.0-or-later
import { KitDirectoryPicker, KitTheme, KitThemes } from "@kit/kit.slint";

export component Example inherits Window {
    title: "KitDirectoryPicker — exemple";
    preferred-width: 520px;
    preferred-height: 260px;
    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: "Sélecteur de dossier"; color: root.theme.text-primary; font-size: 20px * root.theme.text-scale; font-weight: 600; }
        KitDirectoryPicker { theme: root.theme; label: "Dossier d’exportation"; selected-name: "Documents/Project exports"; browse-requested => { root.status = "Demande de dossier à l’hôte"; } }
        if root.status != "": Text { text: root.status; color: root.theme.text-secondary; font-size: 12px * root.theme.text-scale; wrap: word-wrap; }
    }
}

Télécharger cet exemple

API publique

Hérite de Rectangle.

Propriétés

Nom	Type	Sens
`required`	`bool`	`in`
`required-message`	`string`	`in`
`custom-validity`	`string`	`in-out`
`validity`	`KitValidityState`	`out`
`will-validate`	`bool`	`out`
`validation-message`	`string`	`out`
`theme`	`KitTheme`	`in`
`control-size`	`ControlSize`	`in`
`access`	`FieldAccess`	`in`
`request-state`	`HostRequestPresentation`	`in`
`label`	`string`	`in`
`selected-name`	`string`	`in`
`error`	`string`	`in`

Types et variantes

Type	Déclaration
`enum ControlSize`	`compact, medium, comfortable`
`enum FieldAccess`	`editable, read-only, disabled`
`enum HostRequestPresentation`	`idle, pending, cancelled, failed, unsupported`
`struct KitValidityState`	`valid: bool, value-missing: bool, type-mismatch: bool, pattern-mismatch: bool, too-long: bool, too-short: bool, range-underflow: bool, range-overflow: bool, step-mismatch: bool, bad-input: bool, custom-error: bool,`

Signaux

invalid()
browse-requested()
clear-requested()

Fonctions

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