grafana/public/app/plugins/panel/bargauge/BarGaugePanelEditor.tsx

// Libraries
import React, { PureComponent } from 'react';

import {
  ThresholdsEditor,
  ValueMappingsEditor,
  PanelOptionsGrid,
  FieldDisplayEditor,
  FieldDisplayOptions,
  FieldPropertiesEditor,
  PanelOptionsGroup,
  FormLabel,
  PanelEditorProps,
  Select,
} from '@grafana/ui';
import { FieldConfig } from '@grafana/data';

import { Threshold, ValueMapping } from '@grafana/data';
import { BarGaugeOptions, orientationOptions, displayModes } from './types';

export class BarGaugePanelEditor extends PureComponent<PanelEditorProps<BarGaugeOptions>> {
  onThresholdsChanged = (thresholds: Threshold[]) => {
    const current = this.props.options.fieldOptions.defaults;
    this.onDefaultsChange({
      ...current,
      thresholds,
    });
  };

  onValueMappingsChanged = (mappings: ValueMapping[]) => {
    const current = this.props.options.fieldOptions.defaults;
    this.onDefaultsChange({
      ...current,
      mappings,
    });
  };

  onDisplayOptionsChanged = (fieldOptions: FieldDisplayOptions) =>
    this.props.onOptionsChange({
      ...this.props.options,
      fieldOptions,
    });

  onDefaultsChange = (field: FieldConfig) => {
    this.onDisplayOptionsChanged({
      ...this.props.options.fieldOptions,
      defaults: field,
    });
  };

  onOrientationChange = ({ value }: any) => this.props.onOptionsChange({ ...this.props.options, orientation: value });
  onDisplayModeChange = ({ value }: any) => this.props.onOptionsChange({ ...this.props.options, displayMode: value });

  render() {
    const { options } = this.props;
    const { fieldOptions } = options;
    const { defaults } = fieldOptions;

    const labelWidth = 6;

    return (
      <>
        <PanelOptionsGrid>
          <PanelOptionsGroup title="Display">
            <FieldDisplayEditor onChange={this.onDisplayOptionsChanged} value={fieldOptions} labelWidth={labelWidth} />
            <div className="form-field">
              <FormLabel width={labelWidth}>Orientation</FormLabel>
              <Select
                width={12}
                options={orientationOptions}
                defaultValue={orientationOptions[0]}
                onChange={this.onOrientationChange}
                value={orientationOptions.find(item => item.value === options.orientation)}
              />
            </div>
            <div className="form-field">
              <FormLabel width={labelWidth}>Mode</FormLabel>
              <Select
                width={12}
                options={displayModes}
                defaultValue={displayModes[0]}
                onChange={this.onDisplayModeChange}
                value={displayModes.find(item => item.value === options.displayMode)}
              />
            </div>
          </PanelOptionsGroup>
          <PanelOptionsGroup title="Field">
            <FieldPropertiesEditor showMinMax={true} onChange={this.onDefaultsChange} value={defaults} />
          </PanelOptionsGroup>

          <ThresholdsEditor onChange={this.onThresholdsChanged} thresholds={defaults.thresholds} />
        </PanelOptionsGrid>

        <ValueMappingsEditor onChange={this.onValueMappingsChanged} valueMappings={defaults.mappings} />
      </>
    );
  }
}