/**
 *
 *  Copyright (c) "Neo4j"
 *  Neo4j Sweden AB [http://neo4j.com]
 *
 *  This file is part of Neo4j.
 *
 *  Neo4j is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
import type { HexColor } from '../utils/chart-types';
type UseChartLifecycleParams = {
    palette?: HexColor[];
    theme: 'light' | 'dark';
};
type UseChartLoadingParams = {
    isLoading?: boolean;
    isWaitingForFirstResize: boolean;
    theme: 'light' | 'dark';
};
/**
 * Registers Needle ECharts themes and initializes the chart instance.
 *
 * Theme registration runs with the active palette so ECharts can resolve Needle
 * colors before options are applied. The hook only calls `init` when the DOM
 * element does not already have an ECharts instance, allowing later renders to
 * update registered theme data without replacing the existing chart.
 */
export declare function useChartLifecycle({ palette, theme }: UseChartLifecycleParams): void;
/**
 * Mirrors React loading state into ECharts' loading overlay.
 *
 * The overlay also stays visible while the chart waits for its first resize,
 * preventing users from seeing an unmeasured SVG before ECharts has been sized
 * to its container. Loading colors come from the active Needle theme.
 */
export declare function useChartLoading({ isLoading, isWaitingForFirstResize, theme, }: UseChartLoadingParams): void;
/**
 * Keeps the ECharts canvas sized to the DOM box assigned by the chart layout.
 *
 * The hook listens to both window resize events and direct element resize
 * observations because the chart can change size through parent layout changes
 * that do not emit a window resize. It exposes `isWaitingForFirstResize` so the
 * rest of the chart can delay rendering dependent UI until ECharts has been
 * given its initial dimensions.
 */
export declare function useChartResize(): {
    isWaitingForFirstResize: boolean;
    resizeChart: () => void;
};
export {};
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