import { AfterViewChecked, ChangeDetectorRef, ElementRef, Injector, NgZone, OnDestroy, Renderer2 } from '@angular/core';
import { ClrPopoverToggleService } from '../../utils/popover/providers/popover-toggle.service';
import { Point } from './popover';
import { PopoverOptions } from './popover-options.interface';
import * as i0 from "@angular/core";
export declare abstract class AbstractPopover implements AfterViewChecked, OnDestroy {
    protected parentHost: ElementRef<HTMLElement>;
    closeOnOutsideClick: boolean;
    protected el: ElementRef<HTMLElement>;
    protected toggleService: ClrPopoverToggleService;
    protected renderer: Renderer2;
    protected ngZone: NgZone;
    protected ref: ChangeDetectorRef;
    protected anchorElem: any;
    protected anchorPoint: Point;
    protected popoverPoint: Point;
    protected popoverOptions: PopoverOptions;
    protected ignoredElement: any;
    private updateAnchor;
    private popoverInstance;
    private subscription;
    private documentESCListener;
    protected constructor(injector: Injector, parentHost: ElementRef<HTMLElement>);
    ngAfterViewChecked(): void;
    ngOnDestroy(): void;
    protected anchor(): void;
    protected release(): void;
    private attachESCListener;
    private detachESCListener;
    private closeOnOutsideClickCallback;
    private attachOutsideClickListener;
    private detachOutsideClickListener;
    static ɵfac: i0.ɵɵFactoryDeclaration<AbstractPopover, [null, { skipSelf: true; }]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<AbstractPopover, never, never, {}, {}, never, never, false, never>;
}