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@ -10,8 +10,18 @@ import { |
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FALLBACK_COLOR, |
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FieldType, |
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ArrayVector, |
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FieldColorModeId, |
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getValueFormat, |
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ThresholdsMode, |
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} from '@grafana/data'; |
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import { UPlotConfigBuilder, FIXED_UNIT, SeriesVisibilityChangeMode, UPlotConfigPrepFn } from '@grafana/ui'; |
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import { |
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UPlotConfigBuilder, |
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FIXED_UNIT, |
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SeriesVisibilityChangeMode, |
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UPlotConfigPrepFn, |
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VizLegendOptions, |
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VizLegendItem, |
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} from '@grafana/ui'; |
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import { TimelineCoreOptions, getConfig } from './timeline'; |
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import { AxisPlacement, ScaleDirection, ScaleOrientation } from '@grafana/ui/src/components/uPlot/config'; |
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import { measureText } from '@grafana/ui/src/utils/measureText'; |
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@ -291,3 +301,77 @@ export function prepareTimelineFields( |
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} |
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return { frames }; |
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} |
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export function prepareTimelineLegendItems( |
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frames: DataFrame[] | undefined, |
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options: VizLegendOptions |
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): VizLegendItem[] | undefined { |
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if (!frames || options.displayMode === 'hidden') { |
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return undefined; |
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} |
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const fields = allNonTimeFields(frames); |
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if (!fields.length) { |
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return undefined; |
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} |
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const items: VizLegendItem[] = []; |
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const first = fields[0].config; |
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const colorMode = first.color?.mode ?? FieldColorModeId.Fixed; |
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// If thresholds are enabled show each step in the legend
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if (colorMode === FieldColorModeId.Thresholds && first.thresholds?.steps) { |
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const steps = first.thresholds.steps; |
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const disp = getValueFormat( |
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first.thresholds.mode === ThresholdsMode.Percentage ? 'percent' : first.unit ?? 'fixed' |
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); |
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const fmt = (v: number) => formattedValueToString(disp(v)); |
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for (let i = 1; i <= steps.length; i++) { |
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const step = steps[i - 1]; |
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items.push({ |
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label: i === 1 ? `< ${fmt(steps[i].value)}` : `${fmt(step.value)}+`, |
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color: step.color, |
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yAxis: 1, |
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}); |
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} |
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return items; |
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} |
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// If thresholds are enabled show each step in the legend
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if (colorMode.startsWith('continuous')) { |
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return undefined; // eventually a color bar
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} |
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let stateColors: Map<string, string | undefined> = new Map(); |
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fields.forEach((field) => { |
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field.values.toArray().forEach((v) => { |
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let state = field.display!(v); |
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stateColors.set(state.text, state.color!); |
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}); |
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}); |
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stateColors.forEach((color, label) => { |
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if (label.length > 0) { |
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items.push({ |
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label: label!, |
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color, |
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yAxis: 1, |
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}); |
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} |
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}); |
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return items; |
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} |
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function allNonTimeFields(frames: DataFrame[]): Field[] { |
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const fields: Field[] = []; |
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for (const frame of frames) { |
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for (const field of frame.fields) { |
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if (field.type !== FieldType.time) { |
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fields.push(field); |
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} |
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} |
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} |
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return fields; |
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} |
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Leon Sorokin
5 years ago
committed by