import type { LitElement } from 'lit';
import type { MaskParser } from '../../mask-input/mask-parser.js';
import type { RangeTextSelectMode, SelectionRangeDirection } from '../../types.js';
import type { AbstractConstructor } from './constructor.js';
export type MaskSelection = {
    start: number;
    end: number;
};
/**
 * Public + protected interface contributed by {@link MaskBehaviorMixin}.
 * Declared as a `declare class` so consumers can see protected members through
 * the cast return type (mirrors the pattern used by the form-associated mixins).
 */
export declare class MaskBehaviorElementInterface {
    protected readonly _input?: HTMLInputElement;
    protected readonly _parser: MaskParser;
    /** Reflects the current parser state into the host's public value. */
    protected _syncValueFromMask(): void;
    /** Delegates Enter-key handling to the form-associated base. */
    protected _handleEnterKeydown(event: KeyboardEvent): void;
    protected _maskSelection: MaskSelection;
    protected _compositionStart: number;
    protected _focused: boolean;
    protected _maskedValue: string;
    protected get _inputSelection(): MaskSelection;
    protected get _isEmptyMask(): boolean;
    /**
     * Makes the control a readonly field.
     * @attr readonly
     * @default false
     */
    readOnly: boolean;
    /**
     * The mask pattern of the component.
     * @attr
     */
    get mask(): string;
    set mask(value: string);
    /**
     * The prompt symbol to use for unfilled parts of the mask pattern.
     * @attr
     * @default '_'
     */
    get prompt(): string;
    set prompt(value: string);
    protected _handleInput(event: InputEvent): Promise<void>;
    protected _updateInput(text: string, range: MaskSelection): Promise<void>;
    protected _emitInputEvent(): void;
    protected _setMaskSelection(event: Event): void;
    protected _handleCompositionStart(): void;
    protected _handleCompositionEnd(event: CompositionEvent): void;
    protected _handleClick(): void;
    /** Sets the text selection range of the control. */
    setSelectionRange(start?: number, end?: number, direction?: SelectionRangeDirection): void;
    /** Replaces the selected text in the control and re-applies the mask. */
    setRangeText(replacement: string, start?: number, end?: number, selectMode?: RangeTextSelectMode): void;
}
/**
 * Adds masked-input behavior (parser-driven editing, selection tracking,
 * composition handling, range text replacement) to a LitElement-derived class.
 *
 * The host class is expected to provide:
 * - `_input`            – the native `<input>` element (typically via `@query('input')`).
 * - `_parser`           – a {@link MaskParser} (or subclass) instance.
 * - `_setTouchedState`  – from `FormAssociatedMixin`.
 * - `emitEvent`         – from `EventEmitterMixin`.
 * - `select`            – from the host base.
 *
 * The host class must implement `_syncValueFromMask` to bridge the masked
 * text back into its public `value`. It is called by the default
 * `_updateInput` implementation and by `setRangeText`.
 */
export declare function MaskBehaviorMixin<T extends AbstractConstructor<LitElement>>(superClass: T): AbstractConstructor<MaskBehaviorElementInterface> & T;