/**
 * Default keyboard helpers for VolvoxGrid.
 *
 * VolvoxGrid itself owns pointer, wheel, and context-menu request events.
 * Higher-level keyboard input remains opt-in via these helpers.
 *
 * For adapters like VolvoxSheet that implement their own key dispatch, these
 * helpers are NOT needed.
 *
 * For simple demos or thin wrappers, call:
 *   const cleanup = setupDefaultInput(grid, wasm, canvas);
 *   // later: cleanup();
 */
/** Minimal surface used by default-input helpers. */
export interface DefaultInputGrid {
    readonly id: number;
    invalidate(): void;
    pinRow(row: number, mode: number): void;
    setRowSticky(row: number, edge: number): void;
    setColSticky(col: number, edge: number): void;
    syncCursorFromEngine?(): void;
    /** When true, syncInputEditor skips select() so the first typed char isn't selected. */
    suppressEditorSelect?: boolean;
}
/**
 * Attach a default keyboard handler that:
 * - Navigates with arrow/tab/page/home/end keys
 * - Forwards printable characters via handle_key_press so the engine decides
 *   whether to edit, toggle, or ignore them
 * - Forwards all keys to the engine via handle_key_down
 *
 * Returns a cleanup function to remove the listener.
 */
export declare function setupDefaultKeyboard(grid: DefaultInputGrid, wasm: any, canvas: HTMLCanvasElement): () => void;
/**
 * Legacy no-op. Context menus are host-owned and should be attached via
 * `grid.onContextMenuRequest`.
 */
export declare function setupDefaultContextMenu(grid: DefaultInputGrid, wasm: any, canvas: HTMLCanvasElement): () => void;
/**
 * Set up default keyboard handlers.
 * Returns a single cleanup function.
 */
export declare function setupDefaultInput(grid: DefaultInputGrid, wasm: any, canvas: HTMLCanvasElement): () => void;
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