import { LitElement } from 'lit';
import { Constructor } from './constructor.js';

export declare abstract class SbbFormAssociatedMixinType {
    get form(): HTMLFormElement | null;
    get name(): string;
    set name(value: string);
    get type(): string;
    get value(): string | null;
    set value(value: string | null);
    get validity(): ValidityState;
    get validationMessage(): string;
    get willValidate(): boolean;
    protected formDisabled: boolean;
    protected readonly internals: ElementInternals;
    checkValidity(): boolean;
    reportValidity(): boolean;
    formAssociatedCallback?(form: HTMLFormElement | null): void;
    formDisabledCallback(disabled: boolean): void;
    abstract formResetCallback(): void;
    abstract formStateRestoreCallback(state: FormRestoreState | null, reason: FormRestoreReason): void;
    protected updateFormValue(): void;
}
/**
 * The FormAssociatedMixin enables native form support for custom controls.
 */
export declare const SbbFormAssociatedMixin: <T extends Constructor<LitElement>>(superClass: T) => Constructor<SbbFormAssociatedMixinType> & T;
/**
 * A value to be restored for a component's form value. If a component's form
 * state is a `FormData` object, its entry list of name and values will be
 * provided.
 */
export type FormRestoreState = File | string | [string, FormDataEntryValue][];
/**
 * The reason a form component is being restored for, either `'restore'` for
 * browser restoration or `'autocomplete'` for restoring user values.
 */
export type FormRestoreReason = 'restore' | 'autocomplete';
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