@wordpress/block-editor/build-module/components/block-alignment-control/ui.js

Generic block editor.

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

/**
 * External dependencies
 */
import classNames from 'classnames';
/**
 * WordPress dependencies
 */

import { __ } from '@wordpress/i18n';
import { ToolbarDropdownMenu, ToolbarGroup, MenuGroup, MenuItem } from '@wordpress/components';
/**
 * Internal dependencies
 */

import useAvailableAlignments from './use-available-alignments';
import { BLOCK_ALIGNMENTS_CONTROLS, DEFAULT_CONTROL, POPOVER_PROPS } from './constants';

function BlockAlignmentUI({
  value,
  onChange,
  controls,
  isToolbar,
  isCollapsed = true
}) {
  const enabledControls = useAvailableAlignments(controls);
  const hasEnabledControls = !!enabledControls.length;

  if (!hasEnabledControls) {
    return null;
  }

  function onChangeAlignment(align) {
    onChange([value, 'none'].includes(align) ? undefined : align);
  }

  const activeAlignmentControl = BLOCK_ALIGNMENTS_CONTROLS[value];
  const defaultAlignmentControl = BLOCK_ALIGNMENTS_CONTROLS[DEFAULT_CONTROL];
  const UIComponent = isToolbar ? ToolbarGroup : ToolbarDropdownMenu;
  const commonProps = {
    icon: activeAlignmentControl ? activeAlignmentControl.icon : defaultAlignmentControl.icon,
    label: __('Align')
  };
  const extraProps = isToolbar ? {
    isCollapsed,
    controls: enabledControls.map(({
      name: controlName
    }) => {
      return { ...BLOCK_ALIGNMENTS_CONTROLS[controlName],
        isActive: value === controlName || !value && controlName === 'none',
        role: isCollapsed ? 'menuitemradio' : undefined,
        onClick: () => onChangeAlignment(controlName)
      };
    })
  } : {
    toggleProps: {
      describedBy: __('Change alignment')
    },
    popoverProps: POPOVER_PROPS,
    children: ({
      onClose
    }) => {
      return createElement(Fragment, null, createElement(MenuGroup, {
        className: "block-editor-block-alignment-control__menu-group"
      }, enabledControls.map(({
        name: controlName,
        info
      }) => {
        const {
          icon,
          title
        } = BLOCK_ALIGNMENTS_CONTROLS[controlName]; // If no value is provided, mark as selected the `none` option.

        const isSelected = controlName === value || !value && controlName === 'none';
        return createElement(MenuItem, {
          key: controlName,
          icon: icon,
          iconPosition: "left",
          className: classNames('components-dropdown-menu__menu-item', {
            'is-active': isSelected
          }),
          isSelected: isSelected,
          onClick: () => {
            onChangeAlignment(controlName);
            onClose();
          },
          role: "menuitemradio",
          info: info
        }, title);
      })));
    }
  };
  return createElement(UIComponent, _extends({}, commonProps, extraProps));
}

export default BlockAlignmentUI;
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