import type { Column } from './columns.js';
import { type HeaderCell } from './headerCells.js';
import { TableComponent } from './tableComponent.js';
import type { Matrix } from './types/Matrix.js';
import type { AnyPlugins } from './types/TablePlugin.js';
/**
 * HTML attributes for a header row element.
 *
 * @template Item - The type of data items in the table.
 * @template Plugins - The plugins used by the table.
 */
export type HeaderRowAttributes<Item, Plugins extends AnyPlugins = AnyPlugins> = {
    role: 'row';
};
/**
 * Initialization options for creating a HeaderRow.
 *
 * @template Item - The type of data items in the table.
 * @template Plugins - The plugins used by the table.
 */
export interface HeaderRowInit<Item, Plugins extends AnyPlugins = AnyPlugins> {
    id: string;
    cells: HeaderCell<Item, Plugins>[];
}
/**
 * Represents a row in the table header.
 * Contains header cells for column labels and group headers.
 *
 * @template Item - The type of data items in the table.
 * @template Plugins - The plugins used by the table.
 */
export declare class HeaderRow<Item, Plugins extends AnyPlugins = AnyPlugins> extends TableComponent<Item, Plugins, 'thead.tr'> {
    /** The header cells in this row. */
    cells: HeaderCell<Item, Plugins>[];
    /**
     * Creates a new HeaderRow.
     *
     * @param init - Initialization options.
     */
    constructor({ id, cells }: HeaderRowInit<Item, Plugins>);
    /**
     * Gets the HTML attributes for this header row.
     *
     * @returns A readable store of row attributes.
     */
    attrs(): import("svelte/store").Readable<{
        role: "row";
    }>;
    /**
     * Creates a copy of this header row.
     *
     * @returns A cloned HeaderRow.
     */
    clone(): HeaderRow<Item, Plugins>;
}
/**
 * Converts an array of columns into header rows for rendering.
 * Handles nested column groups by creating multiple header rows.
 *
 * @template Item - The type of data items in the table.
 * @template Plugins - The plugins used by the table.
 * @param columns - The column definitions.
 * @param flatColumnIds - Optional array of column IDs for ordering.
 * @returns An array of HeaderRow objects.
 */
export declare const getHeaderRows: <Item, Plugins extends AnyPlugins = AnyPlugins>(columns: Column<Item, Plugins>[], flatColumnIds?: string[]) => HeaderRow<Item, Plugins>[];
/**
 * Creates a matrix of header cells from column definitions.
 * Each row in the matrix represents a header row, with cells positioned
 * according to their column spans.
 *
 * @template Item - The type of data items in the table.
 * @template Plugins - The plugins used by the table.
 * @param columns - The column definitions.
 * @returns A matrix of HeaderCell objects.
 */
export declare const getHeaderRowMatrix: <Item, Plugins extends AnyPlugins = AnyPlugins>(columns: Column<Item, Plugins>[]) => Matrix<HeaderCell<Item, Plugins>>;
/**
 * Reorders a column matrix according to the specified column ID order.
 *
 * @template Item - The type of data items in the table.
 * @template Plugins - The plugins used by the table.
 * @param columnMatrix - The original column matrix.
 * @param flatColumnIds - The desired order of column IDs.
 * @returns A reordered column matrix.
 */
export declare const getOrderedColumnMatrix: <Item, Plugins extends AnyPlugins = AnyPlugins>(columnMatrix: Matrix<HeaderCell<Item, Plugins>>, flatColumnIds: string[]) => Matrix<HeaderCell<Item, Plugins>>;
/**
 * Converts a row matrix into an array of HeaderRow objects.
 *
 * @template Item - The type of data items in the table.
 * @template Plugins - The plugins used by the table.
 * @param rowMatrix - The matrix of header cells organized by rows.
 * @returns An array of HeaderRow objects.
 */
export declare const headerRowsForRowMatrix: <Item, Plugins extends AnyPlugins = AnyPlugins>(rowMatrix: Matrix<HeaderCell<Item, Plugins>>) => HeaderRow<Item, Plugins>[];
/**
 * Multi-colspan cells will appear as multiple adjacent cells on the same row.
 * Join these adjacent multi-colspan cells and update the colspan property.
 *
 * Non-adjacent multi-colspan cells (due to column ordering) must be cloned
 * from the original .
 *
 * @param cells An array of cells.
 * @returns An array of cells with no duplicate consecutive cells.
 */
export declare const getMergedRow: <Item, Plugins extends AnyPlugins = AnyPlugins>(cells: HeaderCell<Item, Plugins>[]) => HeaderCell<Item, Plugins>[];