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StateTimeline: Fix toolitp not showing when for frames with multiple fields (#42741)
* StateTimeline: Fix toolitp not showing when for frames with multiple fields * Update public/app/plugins/panel/state-timeline/StateTimelinePanel.tsx Co-authored-by: Zoltán Bedi <zoltan.bedi@gmail.com> * Update public/app/plugins/panel/state-timeline/StateTimelinePanel.tsx Co-authored-by: Zoltán Bedi <zoltan.bedi@gmail.com> * Update public/app/plugins/panel/state-timeline/StateTimelinePanel.tsx Co-authored-by: Zoltán Bedi <zoltan.bedi@gmail.com> Co-authored-by: Zoltán Bedi <zoltan.bedi@gmail.com>
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@ -1,5 +1,5 @@
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import React, { useCallback, useMemo } from 'react';
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import { DataFrame, PanelProps } from '@grafana/data';
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import { DataFrame, FieldType, PanelProps } from '@grafana/data';
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import { TooltipPlugin, useTheme2, ZoomPlugin, usePanelContext } from '@grafana/ui';
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import { TimelineMode, TimelineOptions } from './types';
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import { TimelineChart } from './TimelineChart';
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@ -39,6 +39,12 @@ export const StateTimelinePanel: React.FC<TimelinePanelProps> = ({
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const renderCustomTooltip = useCallback(
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(alignedData: DataFrame, seriesIdx: number | null, datapointIdx: number | null) => {
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const data = frames ?? [];
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// Count value fields in the state-timeline-ready frame
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const valueFieldsCount = data.reduce(
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(acc, frame) => acc + frame.fields.filter((field) => field.type !== FieldType.time).length,
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0
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);
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// Not caring about multi mode in StateTimeline
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if (seriesIdx === null || datapointIdx === null) {
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return null;
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@ -51,7 +57,7 @@ export const StateTimelinePanel: React.FC<TimelinePanelProps> = ({
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* See https://github.com/grafana/support-escalations/issues/932
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*/
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if (
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(!alignedData.meta?.transformations?.length && alignedData.fields.length - 1 !== data.length) ||
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(!alignedData.meta?.transformations?.length && alignedData.fields.length - 1 !== valueFieldsCount) ||
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!alignedData.fields[seriesIdx]
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) {
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return null;
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