@wordpress/block-editor/build-module/hooks/font-family.js

Generic block editor.

import { createElement } from "@wordpress/element";

/**
 * External dependencies
 */
import { find } from 'lodash';
/**
 * WordPress dependencies
 */

import { hasBlockSupport } from '@wordpress/blocks';
/**
 * Internal dependencies
 */

import { cleanEmptyObject } from './utils';
import useEditorFeature from '../components/use-editor-feature';
import FontFamilyControl from '../components/font-family';
export const FONT_FAMILY_SUPPORT_KEY = '__experimentalFontFamily';

const getFontFamilyFromAttributeValue = (fontFamilies, value) => {
  const attributeParsed = /var:preset\|font-family\|(.+)/.exec(value);

  if (attributeParsed && attributeParsed[1]) {
    const fontFamilyObject = find(fontFamilies, ({
      slug
    }) => {
      return slug === attributeParsed[1];
    });

    if (fontFamilyObject) {
      return fontFamilyObject.fontFamily;
    }
  }

  return value;
};

export function FontFamilyEdit({
  name,
  setAttributes,
  attributes: {
    style = {}
  }
}) {
  var _style$typography;

  const fontFamilies = useEditorFeature('typography.fontFamilies');
  const isDisable = useIsFontFamilyDisabled({
    name
  });

  if (isDisable) {
    return null;
  }

  const value = getFontFamilyFromAttributeValue(fontFamilies, (_style$typography = style.typography) === null || _style$typography === void 0 ? void 0 : _style$typography.fontFamily);

  function onChange(newValue) {
    const predefinedFontFamily = find(fontFamilies, ({
      fontFamily
    }) => fontFamily === newValue);
    setAttributes({
      style: cleanEmptyObject({ ...style,
        typography: { ...(style.typography || {}),
          fontFamily: predefinedFontFamily ? `var:preset|font-family|${predefinedFontFamily.slug}` : newValue || undefined
        }
      })
    });
  }

  return createElement(FontFamilyControl, {
    className: "block-editor-hooks-font-family-control",
    fontFamilies: fontFamilies,
    value: value,
    onChange: onChange
  });
}
/**
 * Custom hook that checks if font-family functionality is disabled.
 *
 * @param {string} name The name of the block.
 * @return {boolean} Whether setting is disabled.
 */

export function useIsFontFamilyDisabled({
  name
}) {
  const fontFamilies = useEditorFeature('typography.fontFamilies');
  return !fontFamilies || fontFamilies.length === 0 || !hasBlockSupport(name, FONT_FAMILY_SUPPORT_KEY);
}
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