import { AfterViewInit, ElementRef, NgZone, OnDestroy } from '@angular/core';
import { DragDropService } from '../services/drag-drop.service';
import { DropScrollAreaOffset, DropScrollDirection, DropScrollOrientation, DropScrollSpeed, DropScrollSpeedFunction, DropScrollTriggerEdge } from './drop-scroll-enhance.type';
import * as i0 from "@angular/core";
export declare class DropScrollEnhancedDirective implements AfterViewInit, OnDestroy {
    private el;
    private zone;
    private dragDropService;
    private doc;
    minSpeed: DropScrollSpeed;
    maxSpeed: DropScrollSpeed;
    responseEdgeWidth: string | ((total: number) => string);
    speedFn: DropScrollSpeedFunction;
    direction: DropScrollDirection;
    viewOffset: {
        forward?: DropScrollAreaOffset;
        backward?: DropScrollAreaOffset;
    };
    dropScrollScope: string | Array<string>;
    backSpaceDroppable: boolean;
    private forwardScrollArea;
    private backwardScrollArea;
    private subscription;
    private forwardScrollFn;
    private backwardScrollFn;
    private lastScrollTime;
    private animationFrameId;
    document: Document;
    constructor(el: ElementRef, zone: NgZone, dragDropService: DragDropService, doc: any);
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    createScrollFn(direction: DropScrollDirection, orientation: DropScrollOrientation, speedFn: DropScrollSpeedFunction): (event: DragEvent) => void;
    delegateDropEvent(event: DragEvent): void;
    getCriticalEdge(direction: DropScrollDirection, orientation: DropScrollOrientation): DropScrollTriggerEdge;
    getSecondEdge(direction: DropScrollDirection): DropScrollTriggerEdge;
    createScrollArea(direction: DropScrollDirection, orientation: DropScrollOrientation): HTMLDivElement;
    setAreaSize(area: HTMLElement, direction: DropScrollDirection, orientation: DropScrollOrientation): void;
    setAreaStyleLayout(area: HTMLElement, direction: DropScrollDirection, orientation: DropScrollOrientation): void;
    getRelatedPosition(target: any, relatedTarget: any, edge: DropScrollTriggerEdge, offsetValue?: number): string;
    resizeArea(): void;
    toggleScrollToOneEnd(scrollElement: any, toggleElement: HTMLElement, direction: DropScrollDirection, orientation: DropScrollOrientation): void;
    cleanLastScrollTime(): void;
    toggleActiveClass(target: any, active: any): void;
    allowScroll(): boolean;
    static ɵfac: i0.ɵɵFactoryDeclaration<DropScrollEnhancedDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<DropScrollEnhancedDirective, "[dDropScrollEnhanced]", ["dDropScrollEnhanced"], { "minSpeed": { "alias": "minSpeed"; "required": false; }; "maxSpeed": { "alias": "maxSpeed"; "required": false; }; "responseEdgeWidth": { "alias": "responseEdgeWidth"; "required": false; }; "speedFn": { "alias": "speedFn"; "required": false; }; "direction": { "alias": "direction"; "required": false; }; "viewOffset": { "alias": "viewOffset"; "required": false; }; "dropScrollScope": { "alias": "dropScrollScope"; "required": false; }; "backSpaceDroppable": { "alias": "backSpaceDroppable"; "required": false; }; }, {}, never, never, false, never>;
}