import { SampleGroupNode } from '../composables/useSampleGroups';
import { GroupDragKind, GroupReorderPosition } from './SampleSelector.groups';
/**
 * Handlers and state predicates shared by every level of the group tree.
 * Passed down as a single prop so the recursive row component does not have to
 * re-emit each event at every nesting level.
 */
export interface SampleGroupTreeContext {
    isExpanded: (key: string) => boolean;
    toggleExpanded: (key: string) => void;
    isSampleSelected: (sample: string) => boolean;
    isFullySelected: (samples: string[]) => boolean;
    isPartiallySelected: (samples: string[]) => boolean;
    toggleSamples: (samples: string[]) => void;
    toggleSample: (sample: string) => void;
    removeGroups: (groupNames: string[]) => void;
    removeSampleFromGroup: (sample: string, groupName: string) => void;
    openColorPicker: (groupNames: string[], event: Event) => void;
    draggingSample: () => string | null;
    dragOverGroup: () => string | null;
    draggingGroup: () => string | null;
    draggingGroupKind: () => GroupDragKind | null;
    reorderTarget: () => string | null;
    reorderPosition: () => GroupReorderPosition | null;
    onSampleDragStart: (sample: string, groupName: string | null, event: DragEvent) => void;
    onSampleDragEnd: () => void;
    onSampleDragOver: (groupName: string, event: DragEvent) => void;
    onSampleDragLeave: () => void;
    onSampleDrop: (groupName: string, event: DragEvent) => void;
    onGroupDragStart: (name: string, kind: GroupDragKind, event: DragEvent) => void;
    onGroupDragEnd: () => void;
    onGroupDragOver: (name: string, kind: GroupDragKind, event: DragEvent) => void;
    onGroupDragLeave: (event: DragEvent) => void;
    onGroupDrop: (name: string, kind: GroupDragKind, event: DragEvent) => void;
    /** Alt+ArrowUp / Alt+ArrowDown reorder a group among its siblings. */
    onGroupReorderKeydown: (name: string, kind: GroupDragKind, event: KeyboardEvent) => void;
}
/** Every concrete group name beneath a node, in tree order. */
export declare function collectLeafGroupNames(node: SampleGroupNode): string[];
/** Expansion keys for a whole tree, used by "expand all". */
export declare function collectNodeKeys(nodes: SampleGroupNode[]): string[];