import * as i0 from '@angular/core';
import { OnDestroy, Signal, ElementRef, InputSignalWithTransform, EventEmitter, ComponentRef } from '@angular/core';
import { ViewportAdapter } from 'ngx-scrollbar';
import { Subject } from 'rxjs';

interface ReachedEvent {
    name: string;
    type: string;
    trigger: string;
}

declare class ReachDropObserver implements OnDestroy {
    private zone;
    viewport: ViewportAdapter;
    /** The intersection observer reference */
    private intersectionObserver;
    events: Subject<string>;
    selectedEvents: ReachedEvent[];
    triggerElements: Signal<readonly ElementRef[]>;
    constructor();
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ReachDropObserver, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<ReachDropObserver, "scroll-reached", never, {}, {}, never, never, true, never>;
}

declare class NgScrollReachDrop {
    private renderer;
    private injector;
    private appRef;
    private viewport;
    private nativeElement;
    /** Reached offset value in px */
    reachedTopOffset: InputSignalWithTransform<number, string | number>;
    reachedBottomOffset: InputSignalWithTransform<number, string | number>;
    reachedStartOffset: InputSignalWithTransform<number, string | number>;
    reachedEndOffset: InputSignalWithTransform<number, string | number>;
    /** Dropped offset value in px */
    droppedTopOffset: InputSignalWithTransform<number, string | number>;
    droppedBottomOffset: InputSignalWithTransform<number, string | number>;
    droppedStartOffset: InputSignalWithTransform<number, string | number>;
    droppedEndOffset: InputSignalWithTransform<number, string | number>;
    disableReached: InputSignalWithTransform<boolean, string | boolean>;
    disableDropped: InputSignalWithTransform<boolean, string | boolean>;
    reachedTop: EventEmitter<void>;
    reachedBottom: EventEmitter<void>;
    reachedStart: EventEmitter<void>;
    reachedEnd: EventEmitter<void>;
    droppedTop: EventEmitter<void>;
    droppedBottom: EventEmitter<void>;
    droppedStart: EventEmitter<void>;
    droppedEnd: EventEmitter<void>;
    container: ComponentRef<ReachDropObserver>;
    /** An array that contains the chosen outputs */
    private events;
    constructor();
    private setCssVariable;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgScrollReachDrop, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<NgScrollReachDrop, "    ng-scrollbar[reachedTop], ng-scrollbar[reachedBottom], ng-scrollbar[reachedStart], ng-scrollbar[reachedEnd],    ng-scrollbar[droppedTop], ng-scrollbar[droppedBottom], ng-scrollbar[droppedStart], ng-scrollbar[droppedEnd],    [ngScrollbar][reachedTop], [ngScrollbar][reachedBottom], [ngScrollbar][reachedStart], [ngScrollbar][reachedEnd],    [ngScrollbar][droppedTop], [ngScrollbar][droppedBottom], [ngScrollbar][droppedStart], [ngScrollbar][droppedEnd]  ", never, { "reachedTopOffset": { "alias": "reachedTopOffset"; "required": false; "isSignal": true; }; "reachedBottomOffset": { "alias": "reachedBottomOffset"; "required": false; "isSignal": true; }; "reachedStartOffset": { "alias": "reachedStartOffset"; "required": false; "isSignal": true; }; "reachedEndOffset": { "alias": "reachedEndOffset"; "required": false; "isSignal": true; }; "droppedTopOffset": { "alias": "droppedTopOffset"; "required": false; "isSignal": true; }; "droppedBottomOffset": { "alias": "droppedBottomOffset"; "required": false; "isSignal": true; }; "droppedStartOffset": { "alias": "droppedStartOffset"; "required": false; "isSignal": true; }; "droppedEndOffset": { "alias": "droppedEndOffset"; "required": false; "isSignal": true; }; "disableReached": { "alias": "disableReached"; "required": false; "isSignal": true; }; "disableDropped": { "alias": "disableDropped"; "required": false; "isSignal": true; }; }, { "reachedTop": "reachedTop"; "reachedBottom": "reachedBottom"; "reachedStart": "reachedStart"; "reachedEnd": "reachedEnd"; "droppedTop": "droppedTop"; "droppedBottom": "droppedBottom"; "droppedStart": "droppedStart"; "droppedEnd": "droppedEnd"; }, never, never, true, never>;
}

export { NgScrollReachDrop };