import { EventEmitter } from '../../stencil-public-runtime';
import type { InputChangeDetail, InputSize, InputType, InputVariant } from './mud-input.types';
/**
 * Input — single-line text-entry control.
 *
 * Pattern B (atom-interactive, form-associated): renders its own `<input>`
 * inside shadow DOM. Form participation works via `formAssociated` +
 * `ElementInternals`. The component is the canonical text-input primitive;
 * specialised inputs (date, search, phone, etc.) compose around it.
 *
 * @element mud-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 input control.
 * @slot icon-end - Trailing `mud-icon` rendered inside the input control.
 */
export declare class MudInput {
    /**
     * Color treatment. `destructive` is forced when `invalid` is set.
     * @default 'default'
     */
    variant: InputVariant;
    /**
     * Loading state. When true the control becomes uninteractive and a
     * trailing spinner replaces the `icon-end` slot. The host carries
     * `aria-busy="true"` for assistive technologies.
     * @default false
     */
    loading: boolean;
    /**
     * Visual size rung.
     * @default 'md'
     */
    size: InputSize;
    /**
     * Native input `type`.
     * @default 'text'
     */
    type: InputType;
    /**
     * Disables interactivity. The internal control receives `aria-disabled` and
     * the native `disabled` attribute.
     * @default false
     */
    disabled: boolean;
    /**
     * Marks the field as mandatory. Adds a red asterisk to the label and sets
     * `aria-required` on the internal control.
     * @default false
     */
    required: boolean;
    /**
     * Renders the field read-only. The control remains focusable and copyable.
     * @default false
     */
    readonly: boolean;
    /**
     * Shows a trailing clear (×) button while the control holds a value. Clearing
     * empties the field, emits `mudInput` + `mudChange`, and returns focus to the
     * input. Suppressed when disabled, read-only, or loading.
     * @default false
     */
    clearable: boolean;
    /**
     * Forces destructive visuals regardless of `variant`. Sets `aria-invalid`.
     * Use together with `errorText` to surface the message.
     * @default false
     */
    invalid: boolean;
    /**
     * Current value of the control. Reflects to the host attribute.
     * @default ''
     */
    value: string;
    /** Form-control `name`. Used during form submission. */
    name?: string;
    /** Placeholder shown when the control is empty. */
    placeholder?: string;
    /** Accessible label for the clear (×) button. Only used when `clearable` is set. */
    clearLabel: 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;
    /** Native `autocomplete` attribute forwarded to the internal control. */
    autocomplete?: string;
    /** Native `maxlength` constraint. */
    maxLength?: number;
    /** Native `minlength` constraint. */
    minLength?: number;
    /** Native `inputmode` hint forwarded to the internal control. */
    inputmode?: string;
    /** Native `pattern` regex forwarded to the internal control. */
    pattern?: string;
    /**
     * Accessible name. Mirrors to the internal control's `aria-label` when no
     * visible label is present. Setting `aria-label` directly on the host also
     * works — captured on connect into `resolvedAriaLabel` and stripped to
     * avoid Stencil's attribute-observer / render-loop antipattern.
     */
    ariaLabel?: string;
    private hasLabelSlot;
    private hasHelperSlot;
    private hasIconStart;
    private hasIconEnd;
    private isFocused;
    private fieldsetDisabled;
    private resolvedAriaLabel?;
    host: HTMLMudInputElement;
    internals: ElementInternals;
    /** Fires on every keystroke. `detail.value` is the current control value. */
    mudInput: EventEmitter<InputChangeDetail>;
    /** Fires when the value is committed (typically on `blur` or `Enter`). `detail.value` is the committed value. */
    mudChange: EventEmitter<InputChangeDetail>;
    /** Fires when the internal control gains focus. The native `FocusEvent` is forwarded as-is. */
    mudFocus: EventEmitter<FocusEvent>;
    /** Fires when the internal control 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 nativeInput?;
    private initialValue;
    componentWillLoad(): void;
    private captureAriaLabel;
    syncAriaLabelProp(next?: string): void;
    onRequiredChange(): void;
    private syncValidity;
    validateVariant(next: InputVariant): void;
    validateSize(next: InputSize): void;
    handleValueChange(next: string): 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;
    private onLabelSlotChange;
    private onHelperSlotChange;
    private onIconStartSlotChange;
    private onIconEndSlotChange;
    private slotHasContent;
    private handleInput;
    private handleChange;
    private handleFocus;
    private handleBlur;
    private handleClear;
    private isInert;
    private resolvedVariant;
    private hasVisibleLabel;
    private showClear;
    private hasErrorMessage;
    private hasHelperMessage;
    private describedBy;
    render(): any;
}