import type { PlotLayout } from "../../layout/plot-layout";
import type { AxisDomain } from "../../axis/numeric-axis";
import type { CategoricalDomain, CategoricalLevel } from "../../axis/categorical-axis";
import type { ZoomConfig } from "../../interaction/zoom-controller";
import { AbstractChart } from "../chart-base";
/**
 * Common base for charts with a categorical X axis, a numeric Y (value)
 * axis, and an optional zoom-on-categorical interaction. Today that's
 * Bar (all four Y-family plugins + X Bar) and Candlestick/OHLC.
 *
 * The class is deliberately thin: it consolidates the bookkeeping that
 * genuinely repeats across those chart families (categorical domain
 * state, last-frame cache for overlay-only redraws, value-axis lock
 * default, shared GL-program + corner-buffer fields) and nothing more.
 * Glyph rendering, hit-testing, build pipelines, and horizontal / dual-
 * axis variance live in the concrete subclasses because they diverge
 * too much to usefully share.
 */
export declare abstract class CategoricalYChart extends AbstractChart {
    /**
     * Row-path levels (group_by hierarchy) for X-axis tick rendering.
     */
    _rowPaths: CategoricalLevel[];
    /**
     * Number of categories on the X axis.
     */
    _numCategories: number;
    /**
     * Offset into the aggregated-row stream (total-rows are skipped).
     */
    _rowOffset: number;
    _program: WebGLProgram | null;
    _cornerBuffer: WebGLBuffer | null;
    _lastLayout: PlotLayout | null;
    _lastXDomain: CategoricalDomain | null;
    _lastYDomain: AxisDomain | null;
    _lastYTicks: number[] | null;
    /**
     * When true, the value axis refits to the visible categorical
     * window each frame — so zooming the categorical axis tightens the
     * value axis to just the bars / candles in view. Subclasses own
     * the per-frame cache object because the cache key shape varies
     * (bar needs `hiddenSeries`, candlestick doesn't; bar may have
     * dual-axis extents, candlestick is single-axis).
     */
    _autoFitValue: boolean;
    /**
     * Lock the value axis by default — user wheel/pan should only
     * scroll the categorical axis. Subclasses override to flip
     * orientation (e.g. X Bar where the value axis is on X).
     */
    protected getZoomConfig(): ZoomConfig;
}