/**
 * Expandable sidebar panel showing all playlist items.
 * Slides in from the right, overlaid on top of the player.
 */
import type { PlaylistItem } from '../elements/vz-playlist.js';
import { type PlayerStrings } from '../core/strings.js';
export declare class PlaylistPanel {
    private panel;
    private listEl;
    private isOpen;
    private onSelect;
    private shadowRoot;
    constructor(shadowRoot: ShadowRoot, items: PlaylistItem[], activeIndex: number, onSelect: (index: number) => void, strings?: PlayerStrings);
    /** Update items and active index */
    update(items: PlaylistItem[], activeIndex: number): void;
    /** Set the active item highlight */
    setActive(index: number): void;
    /** Toggle panel open/closed */
    toggle(): void;
    /** Open the panel */
    open(): void;
    /** Close the panel */
    close(): void;
    /** Clean up */
    dispose(): void;
    private renderItems;
}
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