import { type MoveOperation } from '@deephaven/grid';
import ColumnHeaderGroup from '../../ColumnHeaderGroup';
import { type FlattenedItem } from './sortable-tree/types';
import { type FlattenedIrisGridTreeItem } from './sortable-tree/utilities';
/**
 * Moves an item as the result of drag and drop in the visibility ordering builder
 * This is extracted from the component mostly for testing purposes
 * Drag and drop interactions are not easily testable
 *
 * @param from The item being dragged
 * @param to The item being dropped on
 * @param movedColumns The existing moved columns
 * @param columnHeaderGroups The column header groups pre-drag
 * @param flattenedItems Flattened tree items representing the list
 * @param selectedParentItems The user selected items in tree order. Should not include items if their parent item is selected
 * @param firstMovableIndex The first visible index that can be moved
 * @param lastMovableIndex The last visible index that can be moved
 * @returns Object containing the updated column header groups and updated movedColumns array
 *          The movedColumns returned is complete and does not need to be combined with the existing movedColumns
 */
export declare function moveItemsFromDrop(from: FlattenedIrisGridTreeItem, to: FlattenedIrisGridTreeItem, movedColumns: readonly MoveOperation[], columnHeaderGroups: readonly ColumnHeaderGroup[], selectedParentItems: readonly FlattenedIrisGridTreeItem[], firstMovableIndex: number, lastMovableIndex: number): {
    groups: readonly ColumnHeaderGroup[];
    movedColumns: readonly MoveOperation[];
};
export declare function moveToGroup<T>(item: FlattenedItem<T>, toName: string | null, columnGroups: readonly ColumnHeaderGroup[]): readonly ColumnHeaderGroup[];
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