import { type RefObject } from 'react';
import type { BlockDeletionTarget } from './blockDeletion';
export declare const BLOCK_SELECTED_ATTR = "data-md-selected";
export type DeletionMode = 'block' | 'text';
interface SelectionAnchor {
    /**
     * Position for the floating action button, relative to the slide root's
     * scrolled content. `top`/`bottom` are the selection's top/bottom edges and
     * `left` is its right edge; the consumer clamps the button within the slide.
     */
    top: number;
    bottom: number;
    left: number;
}
export type ResolvedDeletionSelection = {
    kind: 'block';
    targets: BlockDeletionTarget[];
    anchor: SelectionAnchor;
} | {
    kind: 'text';
    chunkIndex: number;
    startOffset: number;
    endOffset: number;
    anchor: SelectionAnchor;
};
interface UseBlockSelectionParams {
    rootRef: RefObject<HTMLElement | null>;
    /** When false the hook is inert (no listeners, no resolution). */
    enabled: boolean;
    /**
     * 'block' resolves a highlight to whole top-level blocks; 'text' resolves it
     * to the exact source character range, falling back to block resolution when
     * the precise range can't be determined.
     */
    mode: DeletionMode;
}
interface UseBlockSelectionResult {
    selection: ResolvedDeletionSelection | null;
    /** Clear the current selection outline + state. */
    clear: () => void;
}
/**
 * Resolve a live text highlight inside `rootRef` to a deletion target. In
 * 'text' mode this is the exact source character range under the highlight; in
 * 'block' mode (or when a precise range can't be resolved) it's the outermost
 * top-level block(s) the highlight overlaps.
 */
export declare function useBlockSelection({ rootRef, enabled, mode, }: UseBlockSelectionParams): UseBlockSelectionResult;
export {};
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