import { ElementRef } from '@angular/core';
import * as i0 from "@angular/core";
import * as i1 from "@taiga-ui/cdk/directives/obscured";
import * as i2 from "./dropdown-close.directive";
import * as i3 from "@taiga-ui/cdk/directives/active-zone";
export declare class TuiDropdownOpen implements ElementRef<Element> {
    private readonly dropdownHost;
    private readonly directive;
    private readonly el;
    private readonly obscured;
    private readonly driver;
    private readonly dropdown;
    readonly enabled: import("@angular/core").InputSignal<boolean>;
    readonly open: import("@angular/core").ModelSignal<boolean>;
    protected readonly driveEffect: import("@angular/core").EffectRef;
    protected readonly syncSub: import("rxjs").Subscription;
    protected readonly keydownSub: import("rxjs").Subscription;
    get nativeElement(): HTMLElement;
    toggle(open: boolean): void;
    protected onClick(target: HTMLElement): void;
    protected onArrow(event: KeyboardEvent, up: boolean): void;
    private get editable();
    private get focused();
    private onKeydown;
    private update;
    private drive;
    private focusDropdown;
    static ɵfac: i0.ɵɵFactoryDeclaration<TuiDropdownOpen, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<TuiDropdownOpen, "[tuiDropdown][tuiDropdownAuto],[tuiDropdown][tuiDropdownOpen],[tuiDropdown][tuiDropdownOpenChange]", never, { "enabled": { "alias": "tuiDropdownEnabled"; "required": false; "isSignal": true; }; "open": { "alias": "tuiDropdownOpen"; "required": false; "isSignal": true; }; }, { "open": "tuiDropdownOpenChange"; }, ["dropdownHost"], never, true, [{ directive: typeof i1.TuiObscured; inputs: {}; outputs: {}; }, { directive: typeof i2.TuiDropdownClose; inputs: {}; outputs: { "tuiDropdownClose": "tuiDropdownClose"; }; }, { directive: typeof i3.TuiActiveZone; inputs: { "tuiActiveZoneParent": "tuiActiveZoneParent"; }; outputs: { "tuiActiveZoneChange": "tuiActiveZoneChange"; }; }]>;
}