import { ChangeDetectorRef, ElementRef, EventEmitter, NgZone, OnChanges, OnDestroy, OnInit, QueryList, SimpleChanges, TemplateRef } from '@angular/core';
import { Aria, ContentTemplateContext, GalleryItemEvent, ItemTemplateContext, Loading, ObjectFit, OrientationFlag, VerticalOrientation } from '../../core';
import { GalleryItemInternal } from '../../core/gallery-item';
export declare class ViewerComponent implements OnChanges, OnInit, OnDestroy {
    private _hostRef;
    private _cd;
    private _zone;
    items: GalleryItemInternal[];
    arrows: boolean;
    selectedIndex: number;
    descriptions: boolean;
    errorText: string;
    mouseGestures: boolean;
    touchGestures: boolean;
    counter: boolean;
    counterOrientation: VerticalOrientation;
    loading: Loading;
    objectFit: ObjectFit;
    itemTemplate: TemplateRef<ItemTemplateContext>;
    loadingTemplate: TemplateRef<void>;
    errorTemplate: TemplateRef<void>;
    arrowTemplate: TemplateRef<void>;
    contentTemplate: TemplateRef<ContentTemplateContext>;
    thumbsOrientation: OrientationFlag;
    aria: Aria;
    loop: boolean;
    itemWidth: string;
    touched: boolean;
    isRtl: boolean;
    imageClick: EventEmitter<GalleryItemEvent>;
    descriptionClick: EventEmitter<Event>;
    selection: EventEmitter<number>;
    itemListRef: ElementRef<HTMLElement>;
    itemsRef: QueryList<ElementRef<HTMLElement>>;
    isVideo: (item: import("../../core").GalleryItem) => boolean;
    UA: {
        ios: boolean;
        ie11: boolean;
    };
    _displayedItems: GalleryItemInternal[];
    _fringeCount: number;
    private _destroy$;
    private _itemWidth;
    private _loop;
    private _viewerWidth;
    private _listX;
    _noAnimation: boolean;
    readonly lazyLoading: boolean;
    readonly showArrow: boolean;
    readonly showPrevArrow: boolean;
    readonly showNextArrow: boolean;
    constructor(_hostRef: ElementRef<HTMLElement>, _cd: ChangeDetectorRef, _zone: NgZone);
    ngOnChanges({ thumbsOrientation, items }: SimpleChanges): void;
    ngOnInit(): void;
    ngOnDestroy(): void;
    isInScrollportProximity(index: number): boolean;
    isYoutube(item: GalleryItemInternal): boolean;
    select(index: number): void;
    selectByDelta(delta: number): void;
    onImageClick(item: GalleryItemInternal, event: Event): void;
    onTab(nextItemIndex: number): void;
    onItemLoaded(item: GalleryItemInternal): void;
    onItemErrored(item: GalleryItemInternal): void;
    itemFailedToLoad(item: GalleryItemInternal): boolean;
    itemLoaded(item: GalleryItemInternal): boolean;
    itemTabbable(index: number): -1 | 0;
    private center;
    private correctIndexOutOfBounds;
    private getFringeCount;
    private getItemsToBeDisplayed;
    private getSelectedItemProximitySpread;
    private handleMouseSlides;
    private handleTouchSlides;
    private handleResizes;
    private loopTo;
    private onResize;
    private readDimensions;
    private selectBySwipeStats;
    private shift;
    private shiftByDelta;
    private stopCurrentVideo;
    private updateDimensionsAndCenter;
}