import type { FileLoadCallback } from '../../io';
import type { AnyStructure } from '../../structure';
export interface StructureEntry {
    label: string;
    structure: AnyStructure;
    color?: string;
}
type RecordValue = AnyStructure | {
    structure: AnyStructure;
    color?: string;
};
export type StructureInput = AnyStructure | Record<string, RecordValue> | StructureEntry[];
export declare const to_structure_entries: (structures: StructureInput | undefined) => StructureEntry[];
export declare const compute_structure_entries: <Data>(entries: readonly StructureEntry[], compute: (structure: AnyStructure) => Data) => {
    entries: (StructureEntry & {
        data: Data;
    })[];
    error: string | undefined;
};
export declare const create_structure_drop_handler: (opts: {
    allow: () => boolean;
    on_entry: (entry: StructureEntry) => void;
    on_error: (msg: string) => void;
    set_loading: (loading: boolean) => void;
    on_file_drop?: () => FileLoadCallback | undefined;
}) => ((event: DragEvent) => Promise<void>);
export {};