import { Clip, ClipOptions } from '../../../../index';
/**
 * Loading state tracked by a placeholder clip while its real media is being resolved.
 */
export declare enum PlaceholderClipState {
    Loading = "Loading",
    Error = "Error",
    Loaded = "Loaded"
}
/**
 * Clip placeholder used while a concrete media clip is still loading or could not be materialized yet.
 *
 * Placeholder clips intentionally do not own a sprite. They exist as timeline/library state holders so the
 * editor can preserve placement, media linkage, and failure state before swapping in the real clip instance.
 */
export declare class PlaceholderClip extends Clip {
    private placeholderState;
    constructor(options: ClipOptions);
    init(layerId: string): Promise<void>;
    hasSprite(): boolean;
    /**
     * Rebinds the placeholder to a library media id.
     *
     * @param mediaId Library media identifier associated with the pending asset.
     */
    setMediaDataId(mediaId: string): void;
    /**
     * Returns the linked library media id, if any.
     *
     * @returns Media id currently tracked by the placeholder.
     */
    getMediaDataId(): string | undefined;
    /**
     * Updates the placeholder's loading/error state.
     *
     * @param placeholderState New placeholder state.
     */
    setPlaceholderState(placeholderState: PlaceholderClipState): void;
    /**
     * Returns the current placeholder state.
     *
     * @returns Placeholder loading state.
     */
    getPlaceholderState(): PlaceholderClipState;
}