grafana/public/app/features/variables/textbox/TextBoxVariableEditor.tsx

import React, { FormEvent, ReactElement, useCallback } from 'react';

import { TextBoxVariableModel } from '@grafana/data';
import { selectors } from '@grafana/e2e-selectors';

import { VariableLegend } from '../../dashboard-scene/settings/variables/components/VariableLegend';
import { VariableTextField } from '../../dashboard-scene/settings/variables/components/VariableTextField';
import { VariableEditorProps } from '../editor/types';

export interface Props extends VariableEditorProps<TextBoxVariableModel> {}

export function TextBoxVariableEditor({ onPropChange, variable: { query } }: Props): ReactElement {
  const updateVariable = useCallback(
    (event: FormEvent<HTMLInputElement>, updateOptions: boolean) => {
      event.preventDefault();
      onPropChange({ propName: 'originalQuery', propValue: event.currentTarget.value, updateOptions: false });
      onPropChange({ propName: 'query', propValue: event.currentTarget.value, updateOptions });
    },
    [onPropChange]
  );

  const onChange = useCallback((e: FormEvent<HTMLInputElement>) => updateVariable(e, false), [updateVariable]);
  const onBlur = useCallback((e: FormEvent<HTMLInputElement>) => updateVariable(e, true), [updateVariable]);

  return (
    <>
      <VariableLegend>Text options</VariableLegend>
      <VariableTextField
        value={query}
        name="Default value"
        placeholder="default value, if any"
        onChange={onChange}
        onBlur={onBlur}
        width={30}
        testId={selectors.pages.Dashboard.Settings.Variables.Edit.TextBoxVariable.textBoxOptionsQueryInputV2}
      />
    </>
  );
}