import { LuxenElement } from './luxen-element.js';
/**
 * Base class for form-associated Luxen custom elements.
 * Implements the Form Associated Custom Elements API via ElementInternals.
 *
 * Subclasses own their typed `value` property and call `_syncFormValue()`
 * whenever it changes.
 */
export declare class LuxenFormAssociatedElement extends LuxenElement {
    static formAssociated: boolean;
    /** @internal */
    readonly _internals: ElementInternals;
    name: string;
    disabled: boolean;
    required: boolean;
    /** The serialised value the element resets to on form reset. */
    protected _defaultFormValue: string;
    /** Whether the user has interacted with this control. */
    hasInteracted: boolean;
    constructor();
    /** The form this control is associated with. */
    get form(): HTMLFormElement | null;
    /** `<label>` elements associated with this control via `for` attribute. */
    get formLabels(): NodeList;
    /**
     * Override to return the inner element where validation popups anchor.
     * Passed as the 3rd arg to `ElementInternals.setValidity()`.
     */
    get validationTarget(): HTMLElement | undefined;
    /** Update the form submission value. */
    protected _syncFormValue(value: string): void;
    checkValidity(): boolean;
    reportValidity(): boolean;
    /** Set a custom validity message. Pass `''` to clear. */
    setCustomValidity(message: string): void;
    /** Directly set validity flags. With no args, clears all flags. */
    protected setValidity(flags?: ValidityStateFlags, message?: string, anchor?: HTMLElement): void;
    get validity(): ValidityState;
    get validationMessage(): string;
    get willValidate(): boolean;
    /** Update `:state()` custom states based on current validity and interaction. */
    private _updateCustomStates;
    private _toggleState;
    formAssociatedCallback(_form: HTMLFormElement | null): void;
    formDisabledCallback(disabled: boolean): void;
    formResetCallback(): void;
    formStateRestoreCallback(state: string, _mode: 'restore' | 'autocomplete'): void;
}
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