@wordpress/block-editor/build-module/hooks/use-border-props.js

Generic block editor.

/**
 * Internal dependencies
 */
import { getInlineStyles } from './style';
import { getBorderClasses, getMultiOriginColor } from './border';
import useMultipleOriginColorsAndGradients from '../components/colors-gradients/use-multiple-origin-colors-and-gradients';

// This utility is intended to assist where the serialization of the border
// block support is being skipped for a block but the border related CSS classes
// & styles still need to be generated so they can be applied to inner elements.

/**
 * Provides the CSS class names and inline styles for a block's border support
 * attributes.
 *
 * @param {Object} attributes Block attributes.
 * @return {Object} Border block support derived CSS classes & styles.
 */
export function getBorderClassesAndStyles(attributes) {
  const border = attributes.style?.border || {};
  const className = getBorderClasses(attributes);
  return {
    className: className || undefined,
    style: getInlineStyles({
      border
    })
  };
}

/**
 * Derives the border related props for a block from its border block support
 * attributes.
 *
 * Inline styles are forced for named colors to ensure these selections are
 * reflected when themes do not load their color stylesheets in the editor.
 *
 * @param {Object} attributes Block attributes.
 *
 * @return {Object} ClassName & style props from border block support.
 */
export function useBorderProps(attributes) {
  const {
    colors
  } = useMultipleOriginColorsAndGradients();
  const borderProps = getBorderClassesAndStyles(attributes);
  const {
    borderColor
  } = attributes;

  // Force inline styles to apply named border colors when themes do not load
  // their color stylesheets in the editor.
  if (borderColor) {
    const borderColorObject = getMultiOriginColor({
      colors,
      namedColor: borderColor
    });
    borderProps.style.borderColor = borderColorObject.color;
  }
  return borderProps;
}
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