import { ListboxComponent } from './listbox.component';
import * as i0 from "@angular/core";
/**
 * A low-level directive to connect a listbox to an input, for use cases like search.
 * It adds event handlers to enable navigation via arrow keys. It also makes
 * the listbox use virtual focus, since the actual focus will be on the connected input.
 */
export declare class ListboxInputDirective {
    set listbox(listbox: ListboxComponent | undefined);
    private handlers?;
    private onKeyDown;
    private onFocus;
    private onBlur;
    static ɵfac: i0.ɵɵFactoryDeclaration<ListboxInputDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ListboxInputDirective, "input[spListboxInput]", never, { "listbox": "spListboxInput"; }, {}, never, never, true, never>;
}