import { EditorView } from '@codemirror/view';
import { DiffType } from 'api-smart-diff';
import { ChangeSummary, ChildKeyInfo, DiffData, FindPathsOptions, MergedDocument, NavigationAPI, NavigationOptions, PathSearchResult } from '../types';
import { BlockTreeIndex } from '../utils/block-index';
import { DiffPath } from '../utils/path';
/** Implementation of the path-based Navigation API */
export declare class NavigationAPIImpl implements NavigationAPI {
    private beforeView;
    private afterView;
    private diffData;
    private merged;
    private currentBlockIndex;
    private currentPath;
    private navigateListeners;
    private treeIndex;
    constructor(beforeView: EditorView | null, afterView: EditorView | null, diffData: DiffData, merged?: MergedDocument | null);
    /** Update views, data, and merged document */
    update(beforeView: EditorView | null, afterView: EditorView | null, diffData: DiffData, merged?: MergedDocument | null, treeIndex?: BlockTreeIndex | null): void;
    /** Navigate to the next change matching the given types */
    goToNextChange(...types: DiffType[]): string | null;
    /** Navigate to the previous change matching the given types */
    goToPrevChange(...types: DiffType[]): string | null;
    /** Navigate to a specific path in the document */
    goToPath(path: DiffPath, options?: NavigationOptions): void;
    /** Find paths whose key or value contains the search text */
    findPaths(text: string, options?: FindPathsOptions): PathSearchResult[];
    /** Get the immediate child keys of a path */
    getChildKeys(path?: DiffPath): ChildKeyInfo[];
    /** Get summary of changes */
    getChangeSummary(): ChangeSummary;
    /** Get the current path */
    getCurrentPath(): string | null;
    /** Subscribe to navigation changes */
    onNavigate(callback: (path: string | null) => void): () => void;
    /** Get blocks with changes (have diff metadata) */
    private getChangedBlocks;
    /** Get blocks by diff type */
    private getBlocksByType;
    /** Navigate to a block, expanding ancestors, scrolling, and highlighting */
    private navigateToBlock;
    /** Expand a block by dispatching toggleBlockExpandedEffect if it is collapsed */
    private expandBlock;
    private scrollToLine;
    private selectBlock;
    /**
     * Resolve a block to its path string.
     * For container blocks this is the block id. For leaf blocks (id = ""),
     * walk up the block tree to find the nearest parent with an id.
     * Uses the tree index for O(1) parent lookup when available.
     */
    private resolveBlockPath;
    private notifyNavigate;
}
/** Create navigation API instance */
export declare function createNavigationAPI(beforeView: EditorView | null, afterView: EditorView | null, diffData: DiffData, merged?: MergedDocument | null): NavigationAPI;