@wordpress/block-editor/build-module/components/block-styles/use-styles-for-block.js

Generic block editor.

/**
 * WordPress dependencies
 */
import { useDispatch, useSelect } from '@wordpress/data';
import { cloneBlock, getBlockType, getBlockFromExample, store as blocksStore } from '@wordpress/blocks';
import { useMemo } from '@wordpress/element';

/**
 * Internal dependencies
 */
import { getActiveStyle, getRenderedStyles, replaceActiveStyle } from './utils';
import { store as blockEditorStore } from '../../store';

/**
 *
 * @param {WPBlock}     block Block object.
 * @param {WPBlockType} type  Block type settings.
 * @return {WPBlock}          A generic block ready for styles preview.
 */
function useGenericPreviewBlock(block, type) {
  return useMemo(() => {
    const example = type?.example;
    const blockName = type?.name;
    if (example && blockName) {
      return getBlockFromExample(blockName, {
        attributes: example.attributes,
        innerBlocks: example.innerBlocks
      });
    }
    if (block) {
      return cloneBlock(block);
    }
  }, [type?.example ? block?.name : block, type]);
}

/**
 * @typedef useStylesForBlocksArguments
 * @property {string}     clientId Block client ID.
 * @property {() => void} onSwitch Block style switch callback function.
 */

/**
 *
 * @param {useStylesForBlocksArguments} useStylesForBlocks arguments.
 * @return {Object}                                         Results of the select methods.
 */
export default function useStylesForBlocks({
  clientId,
  onSwitch
}) {
  const selector = select => {
    const {
      getBlock
    } = select(blockEditorStore);
    const block = getBlock(clientId);
    if (!block) {
      return {};
    }
    const blockType = getBlockType(block.name);
    const {
      getBlockStyles
    } = select(blocksStore);
    return {
      block,
      blockType,
      styles: getBlockStyles(block.name),
      className: block.attributes.className || ''
    };
  };
  const {
    styles,
    block,
    blockType,
    className
  } = useSelect(selector, [clientId]);
  const {
    updateBlockAttributes
  } = useDispatch(blockEditorStore);
  const stylesToRender = getRenderedStyles(styles);
  const activeStyle = getActiveStyle(stylesToRender, className);
  const genericPreviewBlock = useGenericPreviewBlock(block, blockType);
  const onSelect = style => {
    const styleClassName = replaceActiveStyle(className, activeStyle, style);
    updateBlockAttributes(clientId, {
      className: styleClassName
    });
    onSwitch();
  };
  return {
    onSelect,
    stylesToRender,
    activeStyle,
    genericPreviewBlock,
    className
  };
}
//# sourceMappingURL=use-styles-for-block.js.map