import { ComputedRef, MaybeRefOrGetter } from 'vue';
import { IJsonNode, JsonViewerVisibleNode } from '@wolf-tui/shared';
export interface IUseJsonViewerStateProps {
    /**
     * JSON data to display. Accepts plain value, ref, or getter for reactivity.
     */
    data: MaybeRefOrGetter<unknown>;
    /**
     * Default depth to expand on mount.
     *
     * @default 1
     */
    defaultExpandDepth?: number;
    /**
     * Number of visible rows.
     *
     * @default 20
     */
    visibleNodeCount?: number;
    /**
     * Maximum string length before truncation.
     *
     * @default 120
     */
    maxStringLength?: number;
    /**
     * Sort object keys alphabetically.
     *
     * @default false
     */
    sortKeys?: boolean;
    /**
     * Maximum nesting depth.
     *
     * @default 100
     */
    maxDepth?: number;
    /**
     * Indent width (spaces per depth level).
     *
     * @default 2
     */
    indentWidth?: number;
    /**
     * Callback when focused node changes.
     */
    onFocusChange?: (nodeId: string | undefined) => void;
}
export interface IJsonViewerState {
    data: unknown;
    nodes: ComputedRef<IJsonNode[]>;
    focusedIndex: ComputedRef<number>;
    expandedIds: ComputedRef<ReadonlySet<string>>;
    visibleNodes: ComputedRef<JsonViewerVisibleNode[]>;
    hasScrollUp: ComputedRef<boolean>;
    hasScrollDown: ComputedRef<boolean>;
    indentWidth: number;
    focusNext: () => void;
    focusPrevious: () => void;
    focusFirst: () => void;
    focusLast: () => void;
    expand: () => void;
    collapse: () => void;
    toggleExpand: () => void;
    expandAll: () => void;
    collapseAll: () => void;
    moveToFirstChild: () => void;
}
export declare const useJsonViewerState: ({ data: dataProp, defaultExpandDepth, visibleNodeCount, maxStringLength, sortKeys, maxDepth, indentWidth, onFocusChange, }: IUseJsonViewerStateProps) => IJsonViewerState;
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