feat(timeseries-chart): add percentage threshold input control

superset-frontend/packages/superset-ui-demo/storybook/stories/plugins/plugin-chart-echarts/Timeseries/Stories.tsx

@@ -74,6 +74,9 @@ export const Timeseries = ({ width, height }) => {
         logAxis: boolean('Log axis', false),
         yAxisFormat: 'SMART_NUMBER',
         stack: boolean('Stack', false),
+        showValue: boolean('Show Values', false),
+        onlyTotal: boolean('Only Total', false),
+        percentageThreshold: number('Percentage Threshold', 0),
         area: boolean('Area chart', false),
         markerEnabled: boolean('Enable markers', false),
         markerSize: number('Marker Size', 6),

superset-frontend/plugins/plugin-chart-echarts/src/Timeseries/transformProps.ts

@@ -111,6 +111,7 @@ export default function transformProps(
     groupby,
     showValue,
     onlyTotal,
+    percentageThreshold,
     xAxisTitle,
     yAxisTitle,
     xAxisTitleMargin,
@@ -130,6 +131,7 @@ export default function transformProps(
 
   const totalStackedValues: number[] = [];
   const showValueIndexes: number[] = [];
+  const thresholdValues: number[] = [];
 
   rebasedData.forEach(data => {
     const values = Object.keys(data).reduce((prev, curr) => {
@@ -140,6 +142,7 @@ export default function transformProps(
       return prev + (value as number);
     }, 0);
     totalStackedValues.push(values);
+    thresholdValues.push(((percentageThreshold || 0) / 100) * values);
   });
 
   if (stack) {
@@ -168,6 +171,7 @@ export default function transformProps(
       onlyTotal,
       totalStackedValues,
       showValueIndexes,
+      thresholdValues,
       richTooltip,
     });
     if (transformedSeries) series.push(transformedSeries);

superset-frontend/plugins/plugin-chart-echarts/src/Timeseries/transformers.ts

@@ -81,6 +81,7 @@ export function transformSeries(
     formatter?: NumberFormatter;
     totalStackedValues?: number[];
     showValueIndexes?: number[];
+    thresholdValues?: number[];
     richTooltip?: boolean;
   },
 ): SeriesOption | undefined {
@@ -100,6 +101,7 @@ export function transformSeries(
     formatter,
     totalStackedValues = [],
     showValueIndexes = [],
+    thresholdValues = [],
     richTooltip,
   } = opts;
   const contexts = seriesContexts[name || ''] || [];
@@ -211,8 +213,12 @@ export function transformSeries(
         } = params;
         const isSelectedLegend = currentSeries.legend === seriesName;
         if (!formatter) return numericValue;
-        if (!stack || !onlyTotal || isSelectedLegend) {
-          return formatter(numericValue);
+        if (!stack || isSelectedLegend) return formatter(numericValue);
+        if (!onlyTotal) {
+          if (numericValue >= thresholdValues[dataIndex]) {
+            return formatter(numericValue);
+          }
+          return '';
         }
         if (seriesIndex === showValueIndexes[dataIndex]) {
           return formatter(totalStackedValues[dataIndex]);

superset-frontend/plugins/plugin-chart-echarts/src/Timeseries/types.ts

@@ -81,6 +81,7 @@ export type EchartsTimeseriesFormData = QueryFormData & {
   groupby: QueryFormColumn[];
   showValue: boolean;
   onlyTotal: boolean;
+  percentageThreshold: number;
 } & EchartsLegendFormData &
   EchartsTitleFormData;
 
@@ -117,6 +118,7 @@ export const DEFAULT_FORM_DATA: EchartsTimeseriesFormData = {
   groupby: [],
   showValue: false,
   onlyTotal: false,
+  percentageThreshold: 0,
   ...DEFAULT_TITLE_FORM_DATA,
 };
 

superset-frontend/plugins/plugin-chart-echarts/src/controls.tsx

@@ -136,10 +136,29 @@ const onlyTotalControl = {
   },
 };
 
+const percentageThresholdControl = {
+  name: 'percentage_threshold',
+  config: {
+    type: 'TextControl',
+    label: t('Percentage threshold'),
+    renderTrigger: true,
+    isFloat: true,
+    default: 5,
+    description: t(
+      'Minimum threshold in percentage points for showing labels.',
+    ),
+    visibility: ({ controls }: ControlPanelsContainerProps) =>
+      Boolean(controls?.show_value?.value) &&
+      Boolean(controls?.stack?.value) &&
+      Boolean(!controls?.only_total?.value),
+  },
+};
+
 export const showValueSection = [
   [showValueControl],
   [stackControl],
   [onlyTotalControl],
+  [percentageThresholdControl],
 ];
 
 const richTooltipControl = {

superset-frontend/plugins/plugin-chart-echarts/test/Timeseries/transformProps.test.ts

@@ -22,10 +22,13 @@ import {
   FormulaAnnotationLayer,
   IntervalAnnotationLayer,
   TimeseriesAnnotationLayer,
+  AnnotationStyle,
+  AnnotationType,
+  AnnotationSourceType,
 } from '@superset-ui/core';
 import transformProps from '../../src/Timeseries/transformProps';
 
-describe('EchartsTimeseries tranformProps', () => {
+describe('EchartsTimeseries transformProps', () => {
   const formData = {
     colorScheme: 'bnbColors',
     datasource: '3__table',
@@ -82,9 +85,10 @@ describe('EchartsTimeseries tranformProps', () => {
   it('should add a formula annotation to viz', () => {
     const formula: FormulaAnnotationLayer = {
       name: 'My Formula',
-      annotationType: 'FORMULA',
+      annotationType: AnnotationType.Formula,
       value: 'x+1',
-      style: 'solid',
+      style: AnnotationStyle.Solid,
+      showLabel: true,
       show: true,
     };
     const chartProps = new ChartProps({
@@ -132,33 +136,36 @@ describe('EchartsTimeseries tranformProps', () => {
 
   it('should add an interval, event and timeseries annotation to viz', () => {
     const event: EventAnnotationLayer = {
-      annotationType: 'EVENT',
+      annotationType: AnnotationType.Event,
       name: 'My Event',
       show: true,
-      sourceType: 'NATIVE',
-      style: 'solid',
+      showLabel: true,
+      sourceType: AnnotationSourceType.Native,
+      style: AnnotationStyle.Solid,
       value: 1,
     };
 
     const interval: IntervalAnnotationLayer = {
-      annotationType: 'INTERVAL',
+      annotationType: AnnotationType.Interval,
       name: 'My Interval',
       show: true,
-      sourceType: 'table',
+      showLabel: true,
+      sourceType: AnnotationSourceType.Table,
       titleColumn: '',
       timeColumn: 'start',
       intervalEndColumn: '',
       descriptionColumns: [],
-      style: 'dashed',
+      style: AnnotationStyle.Dashed,
       value: 2,
     };
 
     const timeseries: TimeseriesAnnotationLayer = {
-      annotationType: 'TIME_SERIES',
+      annotationType: AnnotationType.Timeseries,
       name: 'My Timeseries',
       show: true,
-      sourceType: 'line',
-      style: 'solid',
+      showLabel: true,
+      sourceType: AnnotationSourceType.Line,
+      style: AnnotationStyle.Solid,
       titleColumn: '',
       value: 3,
     };
@@ -244,3 +251,198 @@ describe('EchartsTimeseries tranformProps', () => {
     );
   });
 });
+
+describe('Does transformProps transform series correctly', () => {
+  type seriesDataType = [Date, number];
+  type labelFormatterType = (params: {
+    value: seriesDataType;
+    dataIndex: number;
+    seriesIndex: number;
+  }) => string;
+  type seriesType = {
+    label: { show: boolean; formatter: labelFormatterType };
+    data: seriesDataType[];
+    name: string;
+  };
+
+  const formData = {
+    colorScheme: 'bnbColors',
+    datasource: '3__table',
+    granularity_sqla: 'ds',
+    metric: 'sum__num',
+    groupby: ['foo', 'bar'],
+    showValue: true,
+    stack: true,
+    onlyTotal: false,
+    percentageThreshold: 50,
+  };
+  const queriesData = [
+    {
+      data: [
+        {
+          'San Francisco': 1,
+          'New York': 2,
+          Boston: 1,
+          __timestamp: 599616000000,
+        },
+        {
+          'San Francisco': 3,
+          'New York': 4,
+          Boston: 1,
+          __timestamp: 599916000000,
+        },
+        {
+          'San Francisco': 5,
+          'New York': 8,
+          Boston: 6,
+          __timestamp: 600216000000,
+        },
+        {
+          'San Francisco': 2,
+          'New York': 7,
+          Boston: 2,
+          __timestamp: 600516000000,
+        },
+      ],
+    },
+  ];
+  const chartPropsConfig = {
+    formData,
+    width: 800,
+    height: 600,
+    queriesData,
+  };
+
+  const totalStackedValues = queriesData[0].data.reduce(
+    (totals, currentStack) => {
+      const total = Object.keys(currentStack).reduce((stackSum, key) => {
+        if (key === '__timestamp') return stackSum;
+        return stackSum + currentStack[key];
+      }, 0);
+      totals.push(total);
+      return totals;
+    },
+    [] as number[],
+  );
+
+  it('should show labels when showValue is true', () => {
+    const chartProps = new ChartProps(chartPropsConfig);
+
+    const transformedSeries = transformProps(chartProps).echartOptions
+      .series as seriesType[];
+
+    transformedSeries.forEach(series => {
+      expect(series.label.show).toBe(true);
+    });
+  });
+
+  it('should not show labels when showValue is false', () => {
+    const updatedChartPropsConfig = {
+      ...chartPropsConfig,
+      formData: { ...formData, showValue: false },
+    };
+
+    const chartProps = new ChartProps(updatedChartPropsConfig);
+
+    const transformedSeries = transformProps(chartProps).echartOptions
+      .series as seriesType[];
+
+    transformedSeries.forEach(series => {
+      expect(series.label.show).toBe(false);
+    });
+  });
+
+  it('should show only totals when onlyTotal is true', () => {
+    const updatedChartPropsConfig = {
+      ...chartPropsConfig,
+      formData: { ...formData, onlyTotal: true },
+    };
+
+    const chartProps = new ChartProps(updatedChartPropsConfig);
+
+    const transformedSeries = transformProps(chartProps).echartOptions
+      .series as seriesType[];
+
+    const showValueIndexes: number[] = [];
+
+    transformedSeries.forEach((entry, seriesIndex) => {
+      const { data = [] } = entry;
+      (data as [Date, number][]).forEach((datum, dataIndex) => {
+        if (datum[1] !== null) {
+          showValueIndexes[dataIndex] = seriesIndex;
+        }
+      });
+    });
+
+    transformedSeries.forEach((series, seriesIndex) => {
+      expect(series.label.show).toBe(true);
+      series.data.forEach((value, dataIndex) => {
+        const params = {
+          value,
+          dataIndex,
+          seriesIndex,
+        };
+
+        let expectedLabel: string;
+
+        if (seriesIndex === showValueIndexes[dataIndex]) {
+          expectedLabel = String(totalStackedValues[dataIndex]);
+        } else {
+          expectedLabel = '';
+        }
+
+        expect(series.label.formatter(params)).toBe(expectedLabel);
+      });
+    });
+  });
+
+  it('should show labels on values >= percentageThreshold if onlyTotal is false', () => {
+    const chartProps = new ChartProps(chartPropsConfig);
+
+    const transformedSeries = transformProps(chartProps).echartOptions
+      .series as seriesType[];
+
+    const expectedThresholds = totalStackedValues.map(
+      total => ((formData.percentageThreshold || 0) / 100) * total,
+    );
+
+    transformedSeries.forEach((series, seriesIndex) => {
+      expect(series.label.show).toBe(true);
+      series.data.forEach((value, dataIndex) => {
+        const params = {
+          value,
+          dataIndex,
+          seriesIndex,
+        };
+        const expectedLabel =
+          value[1] >= expectedThresholds[dataIndex] ? String(value[1]) : '';
+        expect(series.label.formatter(params)).toBe(expectedLabel);
+      });
+    });
+  });
+
+  it('should not apply percentage threshold when showValue is true and stack is false', () => {
+    const updatedChartPropsConfig = {
+      ...chartPropsConfig,
+      formData: { ...formData, stack: false },
+    };
+
+    const chartProps = new ChartProps(updatedChartPropsConfig);
+
+    const transformedSeries = transformProps(chartProps).echartOptions
+      .series as seriesType[];
+
+    transformedSeries.forEach((series, seriesIndex) => {
+      expect(series.label.show).toBe(true);
+      series.data.forEach((value, dataIndex) => {
+        const params = {
+          value,
+          dataIndex,
+          seriesIndex,
+        };
+        const expectedLabel = String(value[1]);
+        expect(series.label.formatter(params)).toBe(expectedLabel);
+      });
+    });
+  });
+});