Interface TimelineUIState

interface TimelineUIState {
    clipboard: { clips: TimelineClip[]; tracks: TimelineTrack[] };
    collapsedSectionIds: string[];
    currentTime: number;
    editMode: "trim" | "select" | "cut" | "move";
    history: TimelineHistoryEntry[];
    historyIndex: number;
    maxHistorySize: number;
    playheadPosition: number;
    scrollPosition: { x: number; y: number };
    selectedClipIds: string[];
    selectedSectionIds: string[];
    selectedTrackIds: string[];
    snapMode: "none" | "grid" | "clips" | "markers";
    timeScale: number;
    visibleTrackTypes: TrackType[];
}