@grafana/ui/dist/esm/components/Sparkline/Sparkline.mjs

Grafana Components Library

import { jsx } from 'react/jsx-runtime';
import { isEqual } from 'lodash';
import { PureComponent } from 'react';
import { nullToValue, compareDataFrameStructures, FieldType, getFieldColorModeForField } from '@grafana/data';
import { AxisPlacement, VisibilityMode, GraphDrawStyle, ScaleDirection, ScaleOrientation } from '@grafana/schema';
import { UPlotChart } from '../uPlot/Plot.mjs';
import { UPlotConfigBuilder } from '../uPlot/config/UPlotConfigBuilder.mjs';
import { preparePlotData2, getStackingGroups } from '../uPlot/utils.mjs';
import { preparePlotFrame, getYRange } from './utils.mjs';

"use strict";
const defaultConfig = {
  drawStyle: GraphDrawStyle.Line,
  showPoints: VisibilityMode.Auto,
  axisPlacement: AxisPlacement.Hidden,
  pointSize: 2
};
class Sparkline extends PureComponent {
  constructor(props) {
    super(props);
    const alignedDataFrame = preparePlotFrame(props.sparkline, props.config);
    this.state = {
      data: preparePlotData2(alignedDataFrame, getStackingGroups(alignedDataFrame)),
      alignedDataFrame,
      configBuilder: this.prepareConfig(alignedDataFrame)
    };
  }
  static getDerivedStateFromProps(props, state) {
    const _frame = preparePlotFrame(props.sparkline, props.config);
    const frame = nullToValue(_frame);
    if (!frame) {
      return { ...state };
    }
    return {
      ...state,
      data: preparePlotData2(frame, getStackingGroups(frame)),
      alignedDataFrame: frame
    };
  }
  componentDidUpdate(prevProps, prevState) {
    var _a, _b;
    const { alignedDataFrame } = this.state;
    if (!alignedDataFrame) {
      return;
    }
    let rebuildConfig = false;
    if (prevProps.sparkline !== this.props.sparkline) {
      const isStructureChanged = !compareDataFrameStructures(this.state.alignedDataFrame, prevState.alignedDataFrame);
      const isRangeChanged = !isEqual(
        (_a = alignedDataFrame.fields[1].state) == null ? void 0 : _a.range,
        (_b = prevState.alignedDataFrame.fields[1].state) == null ? void 0 : _b.range
      );
      rebuildConfig = isStructureChanged || isRangeChanged;
    } else {
      rebuildConfig = !isEqual(prevProps.config, this.props.config);
    }
    if (rebuildConfig) {
      this.setState({ configBuilder: this.prepareConfig(alignedDataFrame) });
    }
  }
  getYRange(field) {
    return getYRange(field, this.state.alignedDataFrame);
  }
  prepareConfig(data) {
    var _a;
    const { theme } = this.props;
    const builder = new UPlotConfigBuilder();
    builder.setCursor({
      show: false,
      x: false,
      // no crosshairs
      y: false
    });
    const xField = data.fields[0];
    builder.addScale({
      scaleKey: "x",
      orientation: ScaleOrientation.Horizontal,
      direction: ScaleDirection.Right,
      isTime: false,
      //xField.type === FieldType.time,
      range: () => {
        const { sparkline } = this.props;
        if (sparkline.x) {
          if (sparkline.timeRange && sparkline.x.type === FieldType.time) {
            return [sparkline.timeRange.from.valueOf(), sparkline.timeRange.to.valueOf()];
          }
          const vals = sparkline.x.values;
          return [vals[0], vals[vals.length - 1]];
        }
        return [0, sparkline.y.values.length - 1];
      }
    });
    builder.addAxis({
      scaleKey: "x",
      theme,
      placement: AxisPlacement.Hidden
    });
    for (let i = 0; i < data.fields.length; i++) {
      const field = data.fields[i];
      const config = field.config;
      const customConfig = {
        ...defaultConfig,
        ...config.custom
      };
      if (field === xField || field.type !== FieldType.number) {
        continue;
      }
      const scaleKey = config.unit || "__fixed";
      builder.addScale({
        scaleKey,
        orientation: ScaleOrientation.Vertical,
        direction: ScaleDirection.Up,
        range: () => this.getYRange(field)
      });
      builder.addAxis({
        scaleKey,
        theme,
        placement: AxisPlacement.Hidden
      });
      const colorMode = getFieldColorModeForField(field);
      const seriesColor = colorMode.getCalculator(field, theme)(0, 0);
      const pointsMode = customConfig.drawStyle === GraphDrawStyle.Points ? VisibilityMode.Always : customConfig.showPoints;
      builder.addSeries({
        pxAlign: false,
        scaleKey,
        theme,
        colorMode,
        thresholds: config.thresholds,
        drawStyle: customConfig.drawStyle,
        lineColor: (_a = customConfig.lineColor) != null ? _a : seriesColor,
        lineWidth: customConfig.lineWidth,
        lineInterpolation: customConfig.lineInterpolation,
        showPoints: pointsMode,
        pointSize: customConfig.pointSize,
        fillOpacity: customConfig.fillOpacity,
        fillColor: customConfig.fillColor,
        lineStyle: customConfig.lineStyle,
        gradientMode: customConfig.gradientMode,
        spanNulls: customConfig.spanNulls
      });
    }
    return builder;
  }
  render() {
    const { data, configBuilder } = this.state;
    const { width, height } = this.props;
    return /* @__PURE__ */ jsx(UPlotChart, { data, config: configBuilder, width, height });
  }
}

export { Sparkline };
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