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ui/src/features/history-chart/HistoryChartArea.tsx

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import type { EChartsOption } from 'echarts';
import ReactEChartsCore from 'echarts-for-react/esm/core.js';
import { useCallback, useEffect, useMemo, useRef } from 'react';
import type { WheelEvent } from 'react';
import type { DataZoomEventBatch } from './chartTypes';
import { echarts } from './historyChartEcharts';
type HistoryChartAreaProps = {
hasData: boolean;
hasSelection: boolean;
loading: boolean;
option: EChartsOption;
onDataZoom: (event: DataZoomEventBatch) => void;
};
/** Включает или выключает нативный X-зум колесом, чтобы Shift + колесо работал только по Y. */
function setXAxisWheelZoom(chart: ReturnType<ReactEChartsCore['getEchartsInstance']>, enabled: boolean): void {
chart.setOption(
{
dataZoom: [
{
id: 'history-x-inside',
zoomOnMouseWheel: enabled,
},
],
},
{ lazyUpdate: true },
);
}
/** Отвечает только за визуальную область графика: placeholder или ECharts canvas. */
export function HistoryChartArea({
hasData,
hasSelection,
loading,
option,
onDataZoom,
}: HistoryChartAreaProps) {
const chartRef = useRef<InstanceType<typeof ReactEChartsCore> | null>(null);
const xWheelZoomEnabledRef = useRef(true);
const onChartEvents = useMemo(
() => ({
datazoom: onDataZoom,
}),
[onDataZoom],
);
const updateXAxisWheelZoom = useCallback((enabled: boolean) => {
const chart = chartRef.current?.getEchartsInstance();
if (!chart || xWheelZoomEnabledRef.current === enabled) {
return;
}
xWheelZoomEnabledRef.current = enabled;
setXAxisWheelZoom(chart, enabled);
}, []);
useEffect(() => {
const handleKeyDown = (event: KeyboardEvent) => {
if (event.key === 'Shift') {
updateXAxisWheelZoom(false);
}
};
const handleKeyUp = (event: KeyboardEvent) => {
if (event.key === 'Shift') {
updateXAxisWheelZoom(true);
}
};
const handleBlur = () => updateXAxisWheelZoom(true);
window.addEventListener('keydown', handleKeyDown);
window.addEventListener('keyup', handleKeyUp);
window.addEventListener('blur', handleBlur);
return () => {
window.removeEventListener('keydown', handleKeyDown);
window.removeEventListener('keyup', handleKeyUp);
window.removeEventListener('blur', handleBlur);
};
}, [updateXAxisWheelZoom]);
const handleWheelCapture = useCallback(
(event: WheelEvent<HTMLDivElement>) => {
updateXAxisWheelZoom(!event.shiftKey);
},
[updateXAxisWheelZoom],
);
if (!hasSelection) {
return <div className="chart-placeholder">Разверните список показателей и выберите серию для графика</div>;
}
if (!hasData && loading) {
return <div className="chart-placeholder">Загрузка графика...</div>;
}
if (!hasData) {
return <div className="chart-placeholder">Нет данных для выбранного диапазона</div>;
}
return (
<div className="history-chart-shell" onWheelCapture={handleWheelCapture}>
<ReactEChartsCore
ref={chartRef}
echarts={echarts}
option={option}
className="history-chart"
onEvents={onChartEvents}
lazyUpdate
/>
</div>
);
}