import type { ViewerEventMap } from "../../core/types/events";
import type { ModelPose, ModelPoseOptions } from "../../core/types/model";
import type { ViewerApiTarget } from "../../core/types/viewer-api";
import type { ContentSize, ViewBox, ViewerStateSnapshot } from "../../core/types/viewer";
import type { MediaSource, MediaType } from "../../iiif/mediaResolver";
/**
 * One forwarding contract for the Svelte component and custom-element entrypoints.
 * Keeping fallback behaviour here prevents their public APIs from drifting apart.
 */
export declare class ViewerApiAdapter {
    private readonly getTarget;
    constructor(getTarget: () => ViewerApiTarget | null);
    on<K extends keyof ViewerEventMap>(event: K, handler: (payload: ViewerEventMap[K]) => void): () => void;
    off<K extends keyof ViewerEventMap>(event: K, handler: (payload: ViewerEventMap[K]) => void): void;
    setEventTarget(target: EventTarget): void;
    getViewBox(): ViewBox | null;
    getContentSize(): ContentSize | null;
    setViewBox(box: ViewBox): void;
    getZoom(): number;
    setZoom(percent: number): void;
    zoomIn(): void;
    zoomOut(): void;
    panTo(x: number, y: number): void;
    getMediaType(): MediaType | null;
    getState(): ViewerStateSnapshot | null;
    getCanvasIndex(): number;
    getCanvasId(): string | null;
    getCanvasCount(): number;
    setCanvasByIndex(index: number): void;
    setCanvasById(canvasId: string): void;
    setManifest(id: string): void;
    getManifestId(): string | null;
    start(): void;
    play(): void;
    pause(): void;
    stop(): void;
    seekBy(delta: number): void;
    seekTo(time: number): void;
    setMediaSegment(start: number, end: number): void;
    setModelOrbit(orbit: string): void;
    setModelTarget(target: string): void;
    setModelOrientation(orientation: string): void;
    setModelPose(pose: ModelPose, options?: ModelPoseOptions): void;
    getModelOrbit(): string | null;
    getModelTarget(): string | null;
    getModelOrientation(): string | null;
    getModelPose(): ModelPose | null;
    addAnnotation(annotation: unknown): Promise<void>;
    removeAnnotation(annotationId: string): Promise<void>;
    updateLayerOpacity(id: string, opacity: number): void;
    getLayerOpacities(): Record<string, number>;
    getMediaSources(): MediaSource[];
}