テーブルブロックを定形に整える

( function ( wp ) {
	var el = wp.element.createElement;

	const extendCoreBlocks = wp.compose.createHigherOrderComponent(
		function ( BlockEdit ) {
			return function ( props ) {
				const {
					name,
					attributes,
					setAttributes,
					isSelected,
				} = props;

				if ( isSelected && 'core/table' === name ) {
					attributes.column1_th = false;

					if ( 0 < attributes.body.length && 'string' === typeof attributes.body[0].cells[0].tag ) {
						attributes.column1_th = ( 'th' === attributes.body[0].cells[0].tag );
					}

					function onToggleColumn1() {
						let newBody = attributes.body;
						for ( let row = 0; row  select( 'core/editor' ).getCurrentPostType(),
						[]
					);
					const [ meta, setMeta ] = wp.coreData.useEntityProp( 'postType', postType, 'meta' );

					if ( 'post' === postType  &&
						2 <= attributes.body.length &&
						2 <= attributes.body[0].cells.length &&
						( meta['item_addr'] !== attributes.body[0].cells[1].content ||
						meta['item_price'] !== attributes.body[1].cells[1].content ) ) {
						setMeta( { ...meta,
							'item_addr': attributes.body[0].cells[1].content,
							'item_price': attributes.body[1].cells[1].content
						} );
					}

					attributes.regular_headings = false;
					if ( 2 <= attributes.body.length &&
						( attributes.body[0].cells[0].content == '住所' &&
						attributes.body[1].cells[0].content == '価格' ) ) {
						attributes.regular_headings = true;
					}

					function setRegularHeadings( event ) {
						let newBody = attributes.body;
						if ( ! attributes.regular_headings ) {
							newBody[0].cells[0].content = '住所';
							newBody[1].cells[0].content = '価格';
						}

						setAttributes( {
							regular_headings: ! attributes.regular_headings,
							body: newBody,
						} );
					}

					return el(
						wp.element.Fragment,
						{},
						el( BlockEdit, props ),
						el(
							wp.components.KeyboardShortcuts,
							{
								bindGlobal: true,
								shortcuts: {
									'mod+q': setRegularHeadings
								}
							}
						),
						el(
							wp.blockEditor.InspectorControls,
							{},
							el(
								wp.components.PanelBody,
								{
									title: 'その他の設定',
									initialOpen: true,
								},
								el(
									wp.components.ToggleControl,
									{
										label: 'tbody内の第1列をth要素にする',
										help: attributes.column1_th?
											'第1列はth要素。': '第1列はtd要素。',
										checked: attributes.column1_th,
										onChange: onToggleColumn1,
									}
								)
							)
						)
					);
				}
				return el( BlockEdit, props );
			};
		},
		'extendCoreBlocksControl'
	);

	wp.hooks.addFilter(
		'editor.BlockEdit',
		'core-extend/table-block',
		extendCoreBlocks
	);
} )( window.wp );