KitTabs

Controlled tab bar separating focus from the selected destination.

Provide tabs in rows and the selection projection in state. Handle activate(token, generation) to change application-owned content.

Tabs expose the accessible tab role and reveal themselves horizontally when the active item changes. Arrows navigate; the view does not create or replace content panels.

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Complete example

This complete Slint file is a visual composition used to produce the screenshot above. Internal strings without a label property retain the kit’s default language; system dialogs follow the host platform. Projected state and callbacks requesting a decision need host wiring; the standalone fixture does not supply that controller. Set up the Rust project, then see the typed controller application for working editing, validation and selection.

// SPDX-License-Identifier: GPL-3.0-or-later
import { KitTabs, KitTheme, KitThemes, SelectionAvailability } from "@kit/kit.slint";

export component Example inherits Window {
    title: "KitTabs 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: "Tabs"; color: root.theme.text-primary; font-size: 20px * root.theme.text-scale; font-weight: 600; }
        KitTabs { theme: root.theme; 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; }
    }
}

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Public API

Inherits Rectangle. The declarations below come from the component source. Parent properties remain available; see the controller guide for state management.

Properties

Name	Type	Direction
`theme`	`KitTheme`	`in`
`control-size`	`ControlSize`	`in`
`rows`	`[OptionRow]`	`in`
`state`	`SelectState`	`in`
`accessible-name`	`string`	`in`

Types and variants

Names below use Slint syntax. Shared Rust domain types live in slint_kit; presentation enums come from the Rust types generated by Slint.

Type	Declaration
`enum CloseReason`	`escape, outside-press, system-back, trigger-toggle, programmatic, host-closed`
`enum ControlSize`	`compact, medium, comfortable`
`enum NavigationStep`	`next, previous, first, last, page-next, page-previous`
`struct OptionRow`	`token: int, generation: int, label: string, description: string, disabled: bool`
`enum SelectionAvailability`	`absent, available, unavailable`
`struct SelectionRef`	`present: bool, token: int`
`struct SelectState`	`selection-availability: SelectionAvailability, selected: SelectionRef, active: SelectionRef, open: bool, active-index: int, generation: int`

Callbacks

navigate(NavigationStep)
activate(int, int)
dismiss(CloseReason)
typeahead(string)

Functions

take-focus()
reveal(left: length, right: length)
handle-key(event: KeyEvent) → EventResult