import { EventEmitter } from '../../stencil-public-runtime';
import type { SegmentedControlChangeDetail, SegmentedControlSegment, SegmentedControlSize } from './mud-segmented-control.types';
/**
 * Segmented control — single-select horizontal switcher.
 *
 * Pattern B (atom-interactive, form-associated): renders an internal
 * `role="radiogroup"` of `role="radio"` buttons inside the shadow DOM with
 * a roving `tabindex`. Selected segment gets the dark inverse fill from
 * Figma 659:8188; unselected segments inherit the light tertiary container
 * background and only carry their label.
 *
 * Keyboard contract (WAI-ARIA Authoring Practices, radiogroup pattern):
 * - `Tab` enters and exits the group (single stop)
 * - `ArrowLeft` / `ArrowRight` move selection between segments
 * - `Home` / `End` jump to first / last segment
 * - `Enter` / `Space` reaffirm selection on the focused segment
 *
 * @element mud-segmented-control
 *
 * @slot - Reserved for future declarative segments. Today, all segments come
 *   from the `segments` prop. The slot is rendered hidden so AT does not see
 *   accidental content twice.
 */
export declare class MudSegmentedControl {
    /**
     * Visual size rung. `md` is 40 px tall; `sm` is 32 px tall.
     * @default 'md'
     */
    size: SegmentedControlSize;
    /**
     * Disables every segment. The container receives `aria-disabled`.
     * @default false
     */
    disabled: boolean;
    /**
     * Full-width mode. The control fills its container and segments stretch to
     * equal shares — the mobile breakpoint from Figma 659:8188. When false
     * (default) the control hugs its content while keeping segments uniform.
     * @default false
     */
    fluid: boolean;
    /**
     * Value of the currently selected segment. Mutable so the control updates it
     * on selection. Like a native form control, `value` is intentionally NOT
     * reflected to the attribute (the attribute represents the default value) —
     * read the current selection from the property or the submitted form value.
     */
    value?: string;
    /**
     * Segment configuration. Order in the array maps left-to-right.
     * When omitted the control renders nothing.
     */
    segments?: SegmentedControlSegment[];
    /** Form-control `name`. Used during form submission. */
    name?: string;
    /**
     * Accessible name for the group. Forwarded to the host's `aria-label`.
     * Required when no surrounding `<label>` references the control.
     */
    ariaLabel?: string;
    /** ID of an element labelling the group (when an external label is used). */
    ariaLabelledby?: string;
    private focusedIndex;
    private fieldsetDisabled;
    host: HTMLMudSegmentedControlElement;
    internals: ElementInternals;
    /** Fires when the selected segment changes. `detail.value` is the new selection. */
    mudChange: EventEmitter<SegmentedControlChangeDetail>;
    private readonly instanceId;
    private readonly groupId;
    private initialValue?;
    private segmentRefs;
    validateSize(next: SegmentedControlSize): void;
    handleValueChange(): void;
    handleKeyDown(ev: KeyboardEvent): void;
    componentWillLoad(): void;
    formDisabledCallback(disabled: boolean): void;
    formResetCallback(): void;
    formStateRestoreCallback(state: string | File | FormData | null): void;
    private syncFormValue;
    private isInert;
    private getEnabledSegments;
    private getSelectedIndex;
    private selectSegment;
    private handleSegmentClick;
    private handleSegmentFocus;
    private handleSegmentBlur;
    private moveFocus;
    private findNextEnabled;
    private setSegmentRef;
    render(): any;
}