Merge branch 'main' into chore/uplot-builder-restructure

frontend/src/container/DashboardContainer/visualization/charts/types.ts

@@ -1,3 +1,4 @@
+import { Timezone } from 'components/CustomTimePicker/timezoneUtils';
 import { PrecisionOption } from 'components/Graph/types';
 import { LegendConfig, TooltipRenderArgs } from 'lib/uPlotV2/components/types';
 import { UPlotConfigBuilder } from 'lib/uPlotV2/config/UPlotConfigBuilder';
@@ -8,7 +9,7 @@ interface BaseChartProps {
 	height: number;
 	showTooltip?: boolean;
 	showLegend?: boolean;
-	timezone: string;
+	timezone?: Timezone;
 	canPinTooltip?: boolean;
 	yAxisUnit?: string;
 	decimalPrecision?: PrecisionOption;

frontend/src/container/DashboardContainer/visualization/panels/BarPanel/BarPanel.tsx

@@ -129,12 +129,12 @@ function BarPanel(props: PanelWrapperProps): JSX.Element {
 					onDestroy={onPlotDestroy}
 					yAxisUnit={widget.yAxisUnit}
 					decimalPrecision={widget.decimalPrecision}
-					timezone={timezone.value}
 					data={chartData as uPlot.AlignedData}
 					width={containerDimensions.width}
 					height={containerDimensions.height}
 					layoutChildren={layoutChildren}
 					isStackedBarChart={widget.stackedBarChart ?? false}
+					timezone={timezone}
 				>
 					<ContextMenu
 						coordinates={coordinates}

frontend/src/container/DashboardContainer/visualization/panels/BarPanel/utils.ts

@@ -5,12 +5,7 @@ import { getInitialStackedBands } from 'container/DashboardContainer/visualizati
 import { getLegend } from 'lib/dashboard/getQueryResults';
 import getLabelName from 'lib/getLabelName';
 import { OnClickPluginOpts } from 'lib/uPlotLib/plugins/onClickPlugin';
-import {
-	DrawStyle,
-	LineInterpolation,
-	LineStyle,
-	VisibilityMode,
-} from 'lib/uPlotV2/config/types';
+import { DrawStyle } from 'lib/uPlotV2/config/types';
 import { UPlotConfigBuilder } from 'lib/uPlotV2/config/UPlotConfigBuilder';
 import { get } from 'lodash-es';
 import { Widgets } from 'types/api/dashboard/getAll';
@@ -63,7 +58,12 @@ export function prepareBarPanelConfig({
 	const minStepInterval = Math.min(...Object.values(stepIntervals));
 
 	const builder = buildBaseConfig({
-		widget,
+		widgetId: widget.id,
+		thresholds: widget.thresholds,
+		yAxisUnit: widget.yAxisUnit,
+		softMin: widget.softMin ?? undefined,
+		softMax: widget.softMax ?? undefined,
+		isLogScale: widget.isLogScale,
 		isDarkMode,
 		onClick,
 		onDragSelect,
@@ -98,14 +98,8 @@ export function prepareBarPanelConfig({
 		builder.addSeries({
 			scaleKey: 'y',
 			drawStyle: DrawStyle.Bar,
-			panelType: PANEL_TYPES.BAR,
 			label: label,
 			colorMapping: widget.customLegendColors ?? {},
-			spanGaps: false,
-			lineStyle: LineStyle.Solid,
-			lineInterpolation: LineInterpolation.Spline,
-			showPoints: VisibilityMode.Never,
-			pointSize: 5,
 			isDarkMode,
 			stepInterval: currentStepInterval,
 		});

frontend/src/container/DashboardContainer/visualization/panels/HistogramPanel/HistogramPanel.tsx

@@ -100,7 +100,7 @@ function HistogramPanel(props: PanelWrapperProps): JSX.Element {
 					yAxisUnit={widget.yAxisUnit}
 					decimalPrecision={widget.decimalPrecision}
 					syncMode={DashboardCursorSync.Crosshair}
-					timezone={timezone.value}
+					timezone={timezone}
 					data={chartData as uPlot.AlignedData}
 					width={containerDimensions.width}
 					height={containerDimensions.height}

frontend/src/container/DashboardContainer/visualization/panels/HistogramPanel/utils.ts

@@ -154,7 +154,12 @@ export function prepareHistogramPanelConfig({
 	isDarkMode: boolean;
 }): UPlotConfigBuilder {
 	const builder = buildBaseConfig({
-		widget,
+		widgetId: widget.id,
+		thresholds: widget.thresholds,
+		yAxisUnit: widget.yAxisUnit,
+		softMin: widget.softMin ?? undefined,
+		softMax: widget.softMax ?? undefined,
+		isLogScale: widget.isLogScale,
 		isDarkMode,
 		apiResponse,
 		panelMode,
@@ -191,10 +196,8 @@ export function prepareHistogramPanelConfig({
 		builder.addSeries({
 			label: '',
 			scaleKey: 'y',
-			drawStyle: DrawStyle.Bar,
-			panelType: PANEL_TYPES.HISTOGRAM,
+			drawStyle: DrawStyle.Histogram,
 			colorMapping: widget.customLegendColors ?? {},
-			spanGaps: false,
 			barWidthFactor: 1,
 			pointSize: 5,
 			lineColor: '#3f5ecc',
@@ -216,10 +219,8 @@ export function prepareHistogramPanelConfig({
 			builder.addSeries({
 				label: label,
 				scaleKey: 'y',
-				drawStyle: DrawStyle.Bar,
-				panelType: PANEL_TYPES.HISTOGRAM,
+				drawStyle: DrawStyle.Histogram,
 				colorMapping: widget.customLegendColors ?? {},
-				spanGaps: false,
 				barWidthFactor: 1,
 				pointSize: 5,
 				isDarkMode,

frontend/src/container/DashboardContainer/visualization/panels/TimeSeriesPanel/TimeSeriesPanel.tsx

@@ -118,7 +118,7 @@ function TimeSeriesPanel(props: PanelWrapperProps): JSX.Element {
 					}}
 					yAxisUnit={widget.yAxisUnit}
 					decimalPrecision={widget.decimalPrecision}
-					timezone={timezone.value}
+					timezone={timezone}
 					data={chartData as uPlot.AlignedData}
 					width={containerDimensions.width}
 					height={containerDimensions.height}

frontend/src/container/DashboardContainer/visualization/panels/TimeSeriesPanel/utils.ts

@@ -82,7 +82,12 @@ export const prepareUPlotConfig = ({
 	const minStepInterval = Math.min(...Object.values(stepIntervals));
 
 	const builder = buildBaseConfig({
-		widget,
+		widgetId: widget.id,
+		thresholds: widget.thresholds,
+		yAxisUnit: widget.yAxisUnit,
+		softMin: widget.softMin ?? undefined,
+		softMax: widget.softMax ?? undefined,
+		isLogScale: widget.isLogScale,
 		isDarkMode,
 		onClick,
 		onDragSelect,
@@ -120,7 +125,6 @@ export const prepareUPlotConfig = ({
 				: VisibilityMode.Never,
 			pointSize: 5,
 			isDarkMode,
-			panelType: PANEL_TYPES.TIME_SERIES,
 		});
 	});
 

frontend/src/container/DashboardContainer/visualization/panels/utils/__tests__/baseConfigBuilder.test.ts

@@ -1,11 +1,11 @@
 import { PANEL_TYPES } from 'constants/queryBuilder';
+import { ThresholdProps } from 'container/NewWidget/RightContainer/Threshold/types';
 import { STEP_INTERVAL_MULTIPLIER } from 'lib/uPlotV2/constants';
-import { Widgets } from 'types/api/dashboard/getAll';
 import { MetricRangePayloadProps } from 'types/api/metrics/getQueryRange';
 import uPlot from 'uplot';
 
 import { PanelMode } from '../../types';
-import { buildBaseConfig } from '../baseConfigBuilder';
+import { BaseConfigBuilderProps, buildBaseConfig } from '../baseConfigBuilder';
 
 jest.mock(
 	'container/DashboardContainer/visualization/panels/utils/legendVisibilityUtils',
@@ -27,16 +27,17 @@ jest.mock('lib/uPlotLib/plugins/onClickPlugin', () => ({
 	default: jest.fn().mockReturnValue({ name: 'onClickPlugin' }),
 }));
 
-const createWidget = (overrides: Partial<Widgets> = {}): Widgets =>
-	({
-		id: 'widget-1',
-		yAxisUnit: 'ms',
-		isLogScale: false,
-		softMin: undefined,
-		softMax: undefined,
-		thresholds: [],
-		...overrides,
-	} as Widgets);
+const createBaseConfigBuilderProps = (
+	overrides: Partial<BaseConfigBuilderProps> = {},
+): Partial<BaseConfigBuilderProps> => ({
+	widgetId: 'widget-1',
+	yAxisUnit: 'ms',
+	isLogScale: false,
+	softMin: undefined,
+	softMax: undefined,
+	thresholds: [],
+	...overrides,
+});
 
 const createApiResponse = (
 	overrides: Partial<MetricRangePayloadProps> = {},
@@ -47,7 +48,7 @@ const createApiResponse = (
 	} as MetricRangePayloadProps);
 
 const baseProps = {
-	widget: createWidget(),
+	...createBaseConfigBuilderProps(),
 	apiResponse: createApiResponse(),
 	isDarkMode: true,
 	panelMode: PanelMode.DASHBOARD_VIEW,
@@ -67,7 +68,7 @@ describe('buildBaseConfig', () => {
 		const builder = buildBaseConfig({
 			...baseProps,
 			panelMode: PanelMode.DASHBOARD_VIEW,
-			widget: createWidget({ id: 'my-widget' }),
+			...createBaseConfigBuilderProps({ widgetId: 'my-widget' }),
 		});
 
 		expect(builder.getWidgetId()).toBe('my-widget');
@@ -127,7 +128,7 @@ describe('buildBaseConfig', () => {
 	it('configures log scale on y axis when widget.isLogScale is true', () => {
 		const builder = buildBaseConfig({
 			...baseProps,
-			widget: createWidget({ isLogScale: true }),
+			...createBaseConfigBuilderProps({ isLogScale: true }),
 		});
 
 		const config = builder.getConfig();
@@ -171,7 +172,7 @@ describe('buildBaseConfig', () => {
 	it('adds thresholds from widget', () => {
 		const builder = buildBaseConfig({
 			...baseProps,
-			widget: createWidget({
+			...createBaseConfigBuilderProps({
 				thresholds: [
 					{
 						thresholdValue: 80,
@@ -179,7 +180,7 @@ describe('buildBaseConfig', () => {
 						thresholdUnit: 'ms',
 						thresholdLabel: 'High',
 					},
-				] as Widgets['thresholds'],
+				] as ThresholdProps[],
 			}),
 		});
 

frontend/src/container/DashboardContainer/visualization/panels/utils/baseConfigBuilder.ts

@@ -1,5 +1,6 @@
 import { Timezone } from 'components/CustomTimePicker/timezoneUtils';
 import { PANEL_TYPES } from 'constants/queryBuilder';
+import { ThresholdProps } from 'container/NewWidget/RightContainer/Threshold/types';
 import onClickPlugin, {
 	OnClickPluginOpts,
 } from 'lib/uPlotLib/plugins/onClickPlugin';
@@ -9,28 +10,32 @@ import {
 } from 'lib/uPlotV2/config/types';
 import { UPlotConfigBuilder } from 'lib/uPlotV2/config/UPlotConfigBuilder';
 import { ThresholdsDrawHookOptions } from 'lib/uPlotV2/hooks/types';
-import { Widgets } from 'types/api/dashboard/getAll';
 import { MetricRangePayloadProps } from 'types/api/metrics/getQueryRange';
 import uPlot from 'uplot';
 
 import { PanelMode } from '../types';
 
 export interface BaseConfigBuilderProps {
-	widget: Widgets;
+	widgetId?: string;
+	thresholds?: ThresholdProps[];
 	apiResponse: MetricRangePayloadProps;
 	isDarkMode: boolean;
 	onClick?: OnClickPluginOpts['onClick'];
 	onDragSelect?: (startTime: number, endTime: number) => void;
 	timezone?: Timezone;
-	panelMode: PanelMode;
+	panelMode?: PanelMode;
 	panelType: PANEL_TYPES;
 	minTimeScale?: number;
 	maxTimeScale?: number;
 	stepInterval?: number;
+	isLogScale?: boolean;
+	yAxisUnit?: string;
+	softMin?: number;
+	softMax?: number;
 }
 
 export function buildBaseConfig({
-	widget,
+	widgetId,
 	isDarkMode,
 	onClick,
 	onDragSelect,
@@ -38,9 +43,14 @@ export function buildBaseConfig({
 	timezone,
 	panelMode,
 	panelType,
+	thresholds,
 	minTimeScale,
 	maxTimeScale,
 	stepInterval,
+	isLogScale,
+	yAxisUnit,
+	softMin,
+	softMax,
 }: BaseConfigBuilderProps): UPlotConfigBuilder {
 	const tzDate = timezone
 		? (timestamp: number): Date =>
@@ -49,27 +59,26 @@ export function buildBaseConfig({
 
 	const builder = new UPlotConfigBuilder({
 		onDragSelect,
-		widgetId: widget.id,
+		widgetId: widgetId,
 		tzDate,
 		shouldSaveSelectionPreference: panelMode === PanelMode.DASHBOARD_VIEW,
-		selectionPreferencesSource: [
-			PanelMode.DASHBOARD_VIEW,
-			PanelMode.STANDALONE_VIEW,
-		].includes(panelMode)
-			? SelectionPreferencesSource.LOCAL_STORAGE
+		selectionPreferencesSource: panelMode
+			? [PanelMode.DASHBOARD_VIEW, PanelMode.STANDALONE_VIEW].includes(panelMode)
+				? SelectionPreferencesSource.LOCAL_STORAGE
+				: SelectionPreferencesSource.IN_MEMORY
 			: SelectionPreferencesSource.IN_MEMORY,
 		stepInterval,
 	});
 
 	const thresholdOptions: ThresholdsDrawHookOptions = {
 		scaleKey: 'y',
-		thresholds: (widget.thresholds || []).map((threshold) => ({
+		thresholds: (thresholds || []).map((threshold) => ({
 			thresholdValue: threshold.thresholdValue ?? 0,
 			thresholdColor: threshold.thresholdColor,
 			thresholdUnit: threshold.thresholdUnit,
 			thresholdLabel: threshold.thresholdLabel,
 		})),
-		yAxisUnit: widget.yAxisUnit,
+		yAxisUnit: yAxisUnit,
 	};
 
 	builder.addThresholds(thresholdOptions);
@@ -79,8 +88,8 @@ export function buildBaseConfig({
 		time: true,
 		min: minTimeScale,
 		max: maxTimeScale,
-		logBase: widget.isLogScale ? 10 : undefined,
-		distribution: widget.isLogScale
+		logBase: isLogScale ? 10 : undefined,
+		distribution: isLogScale
 			? DistributionType.Logarithmic
 			: DistributionType.Linear,
 	});
@@ -91,11 +100,11 @@ export function buildBaseConfig({
 		time: false,
 		min: undefined,
 		max: undefined,
-		softMin: widget.softMin ?? undefined,
-		softMax: widget.softMax ?? undefined,
+		softMin: softMin,
+		softMax: softMax,
 		thresholds: thresholdOptions,
-		logBase: widget.isLogScale ? 10 : undefined,
-		distribution: widget.isLogScale
+		logBase: isLogScale ? 10 : undefined,
+		distribution: isLogScale
 			? DistributionType.Logarithmic
 			: DistributionType.Linear,
 	});
@@ -114,7 +123,7 @@ export function buildBaseConfig({
 		show: true,
 		side: 2,
 		isDarkMode,
-		isLogScale: widget.isLogScale,
+		isLogScale: isLogScale,
 		panelType,
 	});
 
@@ -123,8 +132,8 @@ export function buildBaseConfig({
 		show: true,
 		side: 3,
 		isDarkMode,
-		isLogScale: widget.isLogScale,
-		yAxisUnit: widget.yAxisUnit,
+		isLogScale: isLogScale,
+		yAxisUnit: yAxisUnit,
 		panelType,
 	});
 

frontend/src/lib/uPlotV2/components/Tooltip/Tooltip.tsx

@@ -4,6 +4,7 @@ import cx from 'classnames';
 import { DATE_TIME_FORMATS } from 'constants/dateTimeFormats';
 import dayjs from 'dayjs';
 import { useIsDarkMode } from 'hooks/useDarkMode';
+import { useTimezone } from 'providers/Timezone';
 
 import { TooltipProps } from '../types';
 
@@ -22,6 +23,14 @@ export default function Tooltip({
 	const isDarkMode = useIsDarkMode();
 	const [listHeight, setListHeight] = useState(0);
 	const tooltipContent = content ?? [];
+	const { timezone: userTimezone } = useTimezone();
+
+	const resolvedTimezone = useMemo(() => {
+		if (!timezone) {
+			return userTimezone.value;
+		}
+		return timezone.value;
+	}, [timezone, userTimezone]);
 
 	const headerTitle = useMemo(() => {
 		if (!showTooltipHeader) {
@@ -33,10 +42,10 @@ export default function Tooltip({
 			return null;
 		}
 		return dayjs(data[0][cursorIdx] * 1000)
-			.tz(timezone)
+			.tz(resolvedTimezone)
 			.format(DATE_TIME_FORMATS.MONTH_DATETIME_SECONDS);
 	}, [
-		timezone,
+		resolvedTimezone,
 		uPlotInstance.data,
 		uPlotInstance.cursor.idx,
 		showTooltipHeader,

frontend/src/lib/uPlotV2/components/Tooltip/__tests__/Tooltip.test.tsx

@@ -83,7 +83,7 @@ function createUPlotInstance(cursorIdx: number | null): uPlot {
 function renderTooltip(props: Partial<TooltipTestProps> = {}): RenderResult {
 	const defaultProps: TooltipTestProps = {
 		uPlotInstance: createUPlotInstance(null),
-		timezone: 'UTC',
+		timezone: { value: 'UTC', name: 'UTC', offset: '0', searchIndex: '0' },
 		content: [],
 		showTooltipHeader: true,
 		// TooltipRenderArgs (not used directly in component but required by type)

frontend/src/lib/uPlotV2/components/types.ts

@@ -1,4 +1,5 @@
 import { ReactNode } from 'react';
+import { Timezone } from 'components/CustomTimePicker/timezoneUtils';
 import { PrecisionOption } from 'components/Graph/types';
 import uPlot from 'uplot';
 
@@ -61,7 +62,7 @@ export interface TooltipRenderArgs {
 
 export interface BaseTooltipProps {
 	showTooltipHeader?: boolean;
-	timezone: string;
+	timezone?: Timezone;
 	yAxisUnit?: string;
 	decimalPrecision?: PrecisionOption;
 	content?: TooltipContentItem[];

frontend/src/lib/uPlotV2/config/UPlotSeriesBuilder.ts

@@ -1,4 +1,3 @@
-import { PANEL_TYPES } from 'constants/queryBuilder';
 import { themeColors } from 'constants/theme';
 import { generateColor } from 'lib/uPlotLib/utils/generateColor';
 import { calculateWidthBasedOnStepInterval } from 'lib/uPlotV2/utils';
@@ -23,6 +22,9 @@ import {
  * Path builders are static and shared across all instances of UPlotSeriesBuilder
  */
 let builders: PathBuilders | null = null;
+
+const DEFAULT_LINE_WIDTH = 2;
+export const POINT_SIZE_FACTOR = 2.5;
 export class UPlotSeriesBuilder extends ConfigBuilder<SeriesProps, Series> {
 	constructor(props: SeriesProps) {
 		super(props);
@@ -53,7 +55,7 @@ export class UPlotSeriesBuilder extends ConfigBuilder<SeriesProps, Series> {
 		const { lineWidth, lineStyle, lineCap, fillColor } = this.props;
 		const lineConfig: Partial<Series> = {
 			stroke: resolvedLineColor,
-			width: lineWidth ?? 2,
+			width: lineWidth ?? DEFAULT_LINE_WIDTH,
 		};
 
 		if (lineStyle === LineStyle.Dashed) {
@@ -66,9 +68,9 @@ export class UPlotSeriesBuilder extends ConfigBuilder<SeriesProps, Series> {
 
 		if (fillColor) {
 			lineConfig.fill = fillColor;
-		} else if (this.props.panelType === PANEL_TYPES.BAR) {
+		} else if (this.props.drawStyle === DrawStyle.Bar) {
 			lineConfig.fill = resolvedLineColor;
-		} else if (this.props.panelType === PANEL_TYPES.HISTOGRAM) {
+		} else if (this.props.drawStyle === DrawStyle.Histogram) {
 			lineConfig.fill = `${resolvedLineColor}40`;
 		}
 
@@ -137,10 +139,19 @@ export class UPlotSeriesBuilder extends ConfigBuilder<SeriesProps, Series> {
 			drawStyle,
 			showPoints,
 		} = this.props;
+
+		/**
+		 * If pointSize is not provided, use the lineWidth * POINT_SIZE_FACTOR
+		 * to determine the point size.
+		 * POINT_SIZE_FACTOR is 2, so the point size will be 2x the line width.
+		 */
+		const resolvedPointSize =
+			pointSize ?? (lineWidth ?? DEFAULT_LINE_WIDTH) * POINT_SIZE_FACTOR;
+
 		const pointsConfig: Partial<Series.Points> = {
 			stroke: resolvedLineColor,
 			fill: resolvedLineColor,
-			size: !pointSize || pointSize < (lineWidth ?? 2) ? undefined : pointSize,
+			size: resolvedPointSize,
 			filter: pointsFilter || undefined,
 		};
 
@@ -231,7 +242,7 @@ function getPathBuilder({
 		throw new Error('Required uPlot path builders are not available');
 	}
 
-	if (drawStyle === DrawStyle.Bar) {
+	if (drawStyle === DrawStyle.Bar || drawStyle === DrawStyle.Histogram) {
 		const pathBuilders = uPlot.paths;
 		return getBarPathBuilder({
 			pathBuilders,

frontend/src/lib/uPlotV2/config/__tests__/UPlotConfigBuilder.test.ts

@@ -1,4 +1,3 @@
-import { PANEL_TYPES } from 'constants/queryBuilder';
 import uPlot from 'uplot';
 
 import {
@@ -43,7 +42,6 @@ describe('UPlotConfigBuilder', () => {
 		label: 'Requests',
 		colorMapping: {},
 		drawStyle: DrawStyle.Line,
-		panelType: PANEL_TYPES.TIME_SERIES,
 		...overrides,
 	});
 

frontend/src/lib/uPlotV2/config/__tests__/UPlotSeriesBuilder.test.ts

@@ -1,4 +1,3 @@
-import { PANEL_TYPES } from 'constants/queryBuilder';
 import { themeColors } from 'constants/theme';
 import uPlot from 'uplot';
 
@@ -9,7 +8,7 @@ import {
 	LineStyle,
 	VisibilityMode,
 } from '../types';
-import { UPlotSeriesBuilder } from '../UPlotSeriesBuilder';
+import { POINT_SIZE_FACTOR, UPlotSeriesBuilder } from '../UPlotSeriesBuilder';
 
 const createBaseProps = (
 	overrides: Partial<SeriesProps> = {},
@@ -19,7 +18,6 @@ const createBaseProps = (
 	colorMapping: {},
 	drawStyle: DrawStyle.Line,
 	isDarkMode: false,
-	panelType: PANEL_TYPES.TIME_SERIES,
 	...overrides,
 });
 
@@ -137,7 +135,6 @@ describe('UPlotSeriesBuilder', () => {
 		const smallPointsBuilder = new UPlotSeriesBuilder(
 			createBaseProps({
 				lineWidth: 4,
-				pointSize: 2,
 			}),
 		);
 		const largePointsBuilder = new UPlotSeriesBuilder(
@@ -150,7 +147,7 @@ describe('UPlotSeriesBuilder', () => {
 		const smallConfig = smallPointsBuilder.getConfig();
 		const largeConfig = largePointsBuilder.getConfig();
 
-		expect(smallConfig.points?.size).toBeUndefined();
+		expect(smallConfig.points?.size).toBe(4 * POINT_SIZE_FACTOR); // should be lineWidth * POINT_SIZE_FACTOR, when pointSize is not provided
 		expect(largeConfig.points?.size).toBe(4);
 	});
 

frontend/src/lib/uPlotV2/config/types.ts

@@ -112,6 +112,7 @@ export enum DrawStyle {
 	Line = 'line',
 	Points = 'points',
 	Bar = 'bar',
+	Histogram = 'histogram',
 }
 
 export enum LineInterpolation {
@@ -168,7 +169,6 @@ export interface PointsConfig {
 export interface SeriesProps extends LineConfig, PointsConfig, BarConfig {
 	scaleKey: string;
 	label?: string;
-	panelType: PANEL_TYPES;
 	colorMapping: Record<string, string>;
 	drawStyle: DrawStyle;
 	pathBuilder?: Series.PathBuilder;

frontend/src/lib/uPlotV2/plugins/TooltipPlugin/TooltipPlugin.tsx

@@ -8,7 +8,6 @@ import {
 	createSetCursorHandler,
 	createSetLegendHandler,
 	createSetSeriesHandler,
-	getPlot,
 	isScrollEventInPlot,
 	updatePlotVisibility,
 	updateWindowSize,
@@ -54,7 +53,7 @@ export default function TooltipPlugin({
 	const [viewState, setState] = useState<TooltipViewState>(
 		createInitialViewState,
 	);
-	const { hasPlot, isHovering, isPinned, contents, style } = viewState;
+	const { plot, isHovering, isPinned, contents, style } = viewState;
 
 	/**
 	 * Merge a partial view update into the current React state.
@@ -73,25 +72,12 @@ export default function TooltipPlugin({
 		layoutRef.current?.observer.disconnect();
 		layoutRef.current = createLayoutObserver(layoutRef);
 
-		/**
-		 * Plot lifecycle and GC: viewState uses hasPlot (boolean), not the plot
-		 * reference; clearPlotReferences runs in cleanup so
-		 * detached canvases can be garbage collected.
-		 */
 		// Controller holds the mutable interaction state for this tooltip
 		// instance. It is intentionally *not* React state so uPlot hooks
 		// and DOM listeners can update it freely without triggering a
 		// render on every mouse move.
 		const controller: TooltipControllerState = createInitialControllerState();
 
-		/**
-		 * Clear plot references so detached canvases can be garbage collected.
-		 */
-		const clearPlotReferences = (): void => {
-			controller.plot = null;
-			updateState({ hasPlot: false });
-		};
-
 		const syncTooltipWithDashboard = syncMode === DashboardCursorSync.Tooltip;
 
 		// Enable uPlot's built-in cursor sync when requested so that
@@ -124,10 +110,9 @@ export default function TooltipPlugin({
 		// Lock uPlot's internal cursor when the tooltip is pinned so
 		// subsequent mouse moves do not move the crosshair.
 		function updateCursorLock(): void {
-			const plot = getPlot(controller);
-			if (plot) {
+			if (controller.plot) {
 				// @ts-ignore uPlot cursor lock is not working as expected
-				plot.cursor._lock = controller.pinned;
+				controller.plot.cursor._lock = controller.pinned;
 			}
 		}
 
@@ -157,9 +142,8 @@ export default function TooltipPlugin({
 			const isPinnedBeforeDismiss = controller.pinned;
 			controller.pinned = false;
 			controller.hoverActive = false;
-			const plot = getPlot(controller);
-			if (plot) {
-				plot.setCursor({ left: -10, top: -10 });
+			if (controller.plot) {
+				controller.plot.setCursor({ left: -10, top: -10 });
 			}
 			scheduleRender(isPinnedBeforeDismiss);
 		}
@@ -167,12 +151,11 @@ export default function TooltipPlugin({
 		// Build the React node to be rendered inside the tooltip by
 		// delegating to the caller-provided `render` function.
 		function createTooltipContents(): React.ReactNode {
-			const plot = getPlot(controller);
-			if (!controller.hoverActive || !plot) {
+			if (!controller.hoverActive || !controller.plot) {
 				return null;
 			}
 			return renderRef.current({
-				uPlotInstance: plot,
+				uPlotInstance: controller.plot,
 				dataIndexes: controller.seriesIndexes,
 				seriesIndex: controller.focusedSeriesIndex,
 				isPinned: controller.pinned,
@@ -257,13 +240,9 @@ export default function TooltipPlugin({
 
 		// When pinning is enabled, a click on the plot overlay while
 		// hovering converts the transient tooltip into a pinned one.
-		// Uses getPlot(controller) to avoid closing over u (plot), which
-		// would retain the plot and detached canvases across unmounts.
-		const handleUPlotOverClick = (event: MouseEvent): void => {
-			const plot = getPlot(controller);
+		const handleUPlotOverClick = (u: uPlot, event: MouseEvent): void => {
 			if (
-				plot &&
-				event.target === plot.over &&
+				event.target === u.over &&
 				controller.hoverActive &&
 				!controller.pinned &&
 				controller.focusedSeriesIndex != null
@@ -281,9 +260,10 @@ export default function TooltipPlugin({
 		// on the controller and optionally attach the pinning handler.
 		const handleInit = (u: uPlot): void => {
 			controller.plot = u;
-			updateState({ hasPlot: true });
+			updateState({ plot: u });
 			if (canPinTooltip) {
-				overClickHandler = handleUPlotOverClick;
+				overClickHandler = (event: MouseEvent): void =>
+					handleUPlotOverClick(u, event);
 				u.over.addEventListener('click', overClickHandler);
 			}
 		};
@@ -319,6 +299,7 @@ export default function TooltipPlugin({
 		const handleSetCursor = createSetCursorHandler(ctx);
 
 		handleWindowResize();
+
 		const removeReadyHook = config.addHook('ready', (): void =>
 			updatePlotVisibility(controller),
 		);
@@ -344,20 +325,16 @@ export default function TooltipPlugin({
 			removeSetSeriesHook();
 			removeSetLegendHook();
 			removeSetCursorHook();
-			if (overClickHandler) {
-				const plot = getPlot(controller);
-				if (plot) {
-					plot.over.removeEventListener('click', overClickHandler);
-				}
+			if (controller.plot && overClickHandler) {
+				controller.plot.over.removeEventListener('click', overClickHandler);
 				overClickHandler = null;
 			}
-			clearPlotReferences();
 		};
 		// eslint-disable-next-line react-hooks/exhaustive-deps
 	}, [config]);
 
 	useLayoutEffect((): void => {
-		if (!hasPlot || !layoutRef.current) {
+		if (!plot || !layoutRef.current) {
 			return;
 		}
 		const layout = layoutRef.current;
@@ -372,9 +349,9 @@ export default function TooltipPlugin({
 			layout.width = 0;
 			layout.height = 0;
 		}
-	}, [isHovering, hasPlot]);
+	}, [isHovering, plot]);
 
-	if (!hasPlot) {
+	if (!plot) {
 		return null;
 	}
 

frontend/src/lib/uPlotV2/plugins/TooltipPlugin/tooltipController.ts

@@ -10,11 +10,6 @@ import {
 
 const WINDOW_OFFSET = 16;
 
-/** Get the plot instance from the controller; returns null if never set or cleared. */
-export function getPlot(controller: TooltipControllerState): uPlot | null {
-	return controller.plot ?? null;
-}
-
 export function createInitialControllerState(): TooltipControllerState {
 	return {
 		plot: null,
@@ -51,13 +46,12 @@ export function updateWindowSize(controller: TooltipControllerState): void {
  * This is used to decide if a synced tooltip should be shown at all.
  */
 export function updatePlotVisibility(controller: TooltipControllerState): void {
-	const plot = getPlot(controller);
-	if (!plot) {
+	if (!controller.plot) {
 		controller.plotWithinViewport = false;
 		return;
 	}
 	controller.plotWithinViewport = isPlotInViewport(
-		plot.rect,
+		controller.plot.rect,
 		controller.windowWidth,
 		controller.windowHeight,
 	);
@@ -72,11 +66,10 @@ export function isScrollEventInPlot(
 	event: Event,
 	controller: TooltipControllerState,
 ): boolean {
-	const plot = getPlot(controller);
 	return (
 		event.target instanceof Node &&
-		plot !== null &&
-		event.target.contains(plot.root)
+		controller.plot !== null &&
+		event.target.contains(controller.plot.root)
 	);
 }
 
@@ -172,12 +165,11 @@ export function createSetLegendHandler(
 ): (u: uPlot) => void {
 	return (u: uPlot): void => {
 		const { controller } = ctx;
-		const plot = getPlot(controller);
-		if (!plot?.cursor?.idxs) {
+		if (!controller.plot?.cursor?.idxs) {
 			return;
 		}
 
-		const newSeriesIndexes = plot.cursor.idxs.slice();
+		const newSeriesIndexes = controller.plot.cursor.idxs.slice();
 		const isAnySeriesActive = newSeriesIndexes.some((v, i) => i > 0 && v != null);
 
 		const previousCursorDrivenBySync = controller.cursorDrivenBySync;

frontend/src/lib/uPlotV2/plugins/TooltipPlugin/types.ts

@@ -18,8 +18,7 @@ export enum DashboardCursorSync {
 }
 
 export interface TooltipViewState {
-	/** Whether a plot instance exists; plot reference is in controller, not state. */
-	hasPlot?: boolean;
+	plot?: uPlot | null;
 	style: Partial<CSSProperties>;
 	isHovering: boolean;
 	isPinned: boolean;

frontend/src/lib/uPlotV2/plugins/TooltipPlugin/utils.ts

@@ -123,7 +123,7 @@ export function createInitialViewState(): TooltipViewState {
 		isHovering: false,
 		isPinned: false,
 		contents: null,
-		hasPlot: false,
+		plot: null,
 		dismiss: (): void => {},
 	};
 }