import type { TreeChartBase } from "./tree-chart";
/**
 * Common subset of `TreemapChart` / `SunburstChart` reached by the
 * shared interaction helpers — anything that lives on `TreeChartBase`
 * plus the pinned/hover/facet-drill state the two charts both declare
 * with identical shape but on the subclass (so we type it as an
 * intersection).
 */
export type TreeInteractChart = TreeChartBase & {
    _pinnedNodeId: number;
    _hoveredNodeId: number;
    _facetDrillRoots: Map<string, number>;
};
/**
 * Emit `perspective-click` + `perspective-global-filter selected:true`
 * for a treemap/sunburst node. The path is walked via `ancestorNames`
 * and split into split-by prefix + group-by levels using
 * `_splitBy.length` as the boundary; faceted mode keeps the depth-0
 * ancestor as the split prefix.
 */
export declare function emitTreeNodeEvent(chart: TreeInteractChart, nodeId: number, kind: "leaf" | "branch"): Promise<void>;
/**
 * Build tooltip lines for `nodeId`: ancestor name path + aggregate
 * value + (numeric) color value + per-row tooltip columns from
 * `_lazyRows` for leaves. The leaf branch awaits the source-view row
 * fetch; branch nodes have no underlying row so they emit a Children
 * count instead.
 */
export declare function buildTreeTooltipLines(chart: TreeInteractChart, nodeId: number): Promise<string[]>;
/**
 * Pin a tooltip at the chart-supplied anchor. Lines are fetched lazily;
 * the `_pinnedNodeId` check on resolve discards stale results from a
 * prior pin or dismissal.
 */
export declare function showTreePinnedTooltip(chart: TreeInteractChart, nodeId: number, anchor: {
    cx: number;
    cy: number;
}, renderChromeOverlay: () => void): void;
export declare function dismissTreePinnedTooltip(chart: TreeInteractChart): void;
/**
 * Drill the clicked facet (or the whole chart in non-facet mode).
 * Faceted drill walks up to the facet root (top-level child of
 * `_rootId`), records the new drill node under that facet's label, and
 * re-renders.
 */
export declare function treeDrillTo(chart: TreeInteractChart, nodeId: number, renderFrame: () => void): void;