import { EventEmitter } from '../../stencil-public-runtime';
import type { SelectChangeDetail, SelectInputSize, SelectInputVariant, SelectOption } from './mud-select-input.types';
/**
 * Select Input — single-select dropdown atom.
 *
 * Pattern B (atom-interactive, form-associated): renders a custom-styled
 * trigger button and a listbox popover inside shadow DOM. Form participation
 * works via `formAssociated` + `ElementInternals`. Shares the visual primitives
 * of `mud-input` (border, focus ring, label, helper / error text, sizes,
 * states) and adds a trailing chevron icon, listbox menu, and keyboard
 * navigation (ArrowUp/Down/Home/End/Enter/Escape) per the WAI-ARIA combobox
 * pattern.
 *
 * @element mud-select-input
 *
 * @slot label - Rich label content, replaces the `label` prop when present.
 * @slot helper - Rich helper / hint content, replaces the `helper-text` prop. Hidden when invalid + error-text is shown.
 * @slot icon-start - Leading `mud-icon` rendered inside the control row.
 */
export declare class MudSelectInput {
    /**
     * Color treatment. `destructive` is forced when `invalid` is set.
     * @default 'default'
     */
    variant: SelectInputVariant;
    /**
     * Visual size rung.
     * @default 'md'
     */
    size: SelectInputSize;
    /**
     * Disables interactivity. The trigger receives `aria-disabled` and the
     * hidden native `<select>` receives the `disabled` attribute.
     * @default false
     */
    disabled: boolean;
    /**
     * Marks the field as mandatory. Adds a red asterisk to the label and sets
     * `aria-required` on the trigger.
     * @default false
     */
    required: boolean;
    /**
     * Renders the field read-only. The trigger remains focusable but the
     * listbox cannot be opened.
     * @default false
     */
    readonly: boolean;
    /**
     * Forces destructive visuals regardless of `variant`. Sets `aria-invalid`.
     * Use together with `errorText` to surface the message.
     * @default false
     */
    invalid: boolean;
    /**
     * Reflects the open state of the listbox popover. Read-only externally —
     * use `mudOpen` / `mudClose` to react to changes.
     * @default false
     */
    open: boolean;
    /**
     * Selected value. Reflects to the host attribute. Set to empty string when
     * no option is selected.
     * @default ''
     */
    value: string;
    /** Form-control `name`. Used during form submission. */
    name?: string;
    /** Placeholder shown when no option is selected. */
    placeholder?: string;
    /** Plain-text label. Use the `label` slot for richer content. */
    label?: string;
    /** Plain-text helper / hint shown below the control. */
    helperText?: string;
    /**
     * Plain-text error message shown below the control when `invalid` is set.
     * When present it replaces `helperText` and pairs with the error icon.
     */
    errorText?: string;
    /**
     * Declarative option list. When omitted the component falls back to its
     * default slot, allowing `<option>` children for HTML-native composition.
     */
    options?: SelectOption[];
    /**
     * Accessible name. Mirrors to the trigger's `aria-label` when no visible
     * label is present. Captured into `resolvedAriaLabel` on mount and the
     * host attribute is stripped to avoid Stencil's auto-reflection loop.
     */
    ariaLabel?: string;
    private hasLabelSlot;
    private hasHelperSlot;
    private hasIconStart;
    private isFocused;
    private fieldsetDisabled;
    private highlightedIndex;
    private slotOptions;
    private resolvedAriaLabel?;
    host: HTMLMudSelectInputElement;
    internals: ElementInternals;
    /** Fires when the selected value changes. `detail.value` is the new value. */
    mudChange: EventEmitter<SelectChangeDetail>;
    /** Fires when the listbox opens. */
    mudOpen: EventEmitter<void>;
    /** Fires when the listbox closes. */
    mudClose: EventEmitter<void>;
    /** Fires when the trigger gains focus. The native `FocusEvent` is forwarded as-is. */
    mudFocus: EventEmitter<FocusEvent>;
    /** Fires when the trigger loses focus. The native `FocusEvent` is forwarded as-is. */
    mudBlur: EventEmitter<FocusEvent>;
    private readonly instanceId;
    private readonly labelId;
    private readonly helperId;
    private readonly errorId;
    private readonly triggerId;
    private readonly listboxId;
    private initialValue;
    private triggerEl?;
    private listboxEl?;
    componentWillLoad(): void;
    /**
     * Stencil auto-reflects `@Prop()` values back onto the host attribute. For
     * `aria-label` that creates an observer loop (host attr → prop → host attr).
     * Capture the consumer-provided value into a state field, then strip the
     * attribute so the loop never fires.
     */
    private captureAriaLabel;
    private primeHighlight;
    /**
     * Reflects required + value into `ElementInternals` so the host participates
     * in native form validation. Anchored on the trigger button so a11y focus
     * lands on the visible control.
     */
    private syncValidity;
    validateVariant(next: SelectInputVariant): void;
    validateSize(next: SelectInputSize): void;
    handleValueChange(next: string): void;
    handleRequiredChange(): void;
    handleAriaLabelChange(next: string | undefined): void;
    handleOptionsChange(): void;
    handleOpenChange(next: boolean): void;
    /** Mirrors `disabled` from an ancestor `<fieldset disabled>` without clobbering the consumer-set prop. */
    formDisabledCallback(disabled: boolean): void;
    formResetCallback(): void;
    formStateRestoreCallback(state: string | File | FormData | null): void;
    handleDocumentClick(ev: MouseEvent): void;
    private onLabelSlotChange;
    private onHelperSlotChange;
    private onIconStartSlotChange;
    private onDefaultSlotChange;
    private slotHasContent;
    private refreshSlotOptions;
    private resolvedOptions;
    private resolvedVariant;
    private isInert;
    private hasVisibleLabel;
    private hasErrorMessage;
    private hasHelperMessage;
    private describedBy;
    private firstEnabledIndex;
    private lastEnabledIndex;
    private nextEnabledIndex;
    /**
     * Single entrypoint for open/close. Owns the imperative side effects
     * (focus return on close) so `@Watch('open')` can stay a thin DOM sync.
     */
    private setListboxOpen;
    private openListbox;
    private closeListbox;
    private toggleListbox;
    private selectIndex;
    private handleTriggerKeyDown;
    private scrollHighlightedIntoView;
    private handleTriggerFocus;
    private handleTriggerBlur;
    private handleOptionPointerEnter;
    private handleOptionClick;
    render(): any;
}