@wordpress/block-editor/build-module/components/letter-spacing-control/index.js

Generic block editor.

import _extends from "@babel/runtime/helpers/esm/extends";
import { createElement } from "@wordpress/element";

/**
 * WordPress dependencies
 */
import { __experimentalUnitControl as UnitControl, __experimentalUseCustomUnits as useCustomUnits } from '@wordpress/components';
import { __ } from '@wordpress/i18n';
/**
 * Internal dependencies
 */

import useSetting from '../../components/use-setting';
/**
 * Control for letter-spacing.
 *
 * @param {Object}                  props                      Component props.
 * @param {string}                  props.value                Currently selected letter-spacing.
 * @param {Function}                props.onChange             Handles change in letter-spacing selection.
 * @param {string|number|undefined} props.__unstableInputWidth Input width to pass through to inner UnitControl. Should be a valid CSS value.
 *
 * @return {WPElement} Letter-spacing control.
 */

export default function LetterSpacingControl({
  value,
  onChange,
  __unstableInputWidth = '60px',
  ...otherProps
}) {
  const units = useCustomUnits({
    availableUnits: useSetting('spacing.units') || ['px', 'em', 'rem'],
    defaultValues: {
      px: 2,
      em: 0.2,
      rem: 0.2
    }
  });
  return createElement(UnitControl, _extends({}, otherProps, {
    label: __('Letter spacing'),
    value: value,
    __unstableInputWidth: __unstableInputWidth,
    units: units,
    onChange: onChange
  }));
}
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