@wordpress/block-editor/src/components/inserter/menu.native.js

Generic block editor.

/**
 * External dependencies
 */
import { View } from 'react-native';
/**
 * WordPress dependencies
 */
import { useEffect, useState, useCallback } from '@wordpress/element';
import { useSelect, useDispatch } from '@wordpress/data';
import {
	createBlock,
	rawHandler,
	store as blocksStore,
} from '@wordpress/blocks';
import {
	BottomSheet,
	BottomSheetConsumer,
	getClipboard,
} from '@wordpress/components';

/**
 * Internal dependencies
 */

import InserterSearchResults from './search-results';
import InserterSearchForm from './search-form';
import { store as blockEditorStore } from '../../store';
import { searchItems } from './search-items';

const MIN_ITEMS_FOR_SEARCH = 2;

function InserterMenu( {
	onSelect,
	onDismiss,
	rootClientId,
	clientId,
	isAppender,
	shouldReplaceBlock,
	insertionIndex,
} ) {
	const [ filterValue, setFilterValue ] = useState( '' );
	const [ searchFormHeight, setSearchFormHeight ] = useState( 0 );
	// eslint-disable-next-line no-undef
	const [ showSearchForm, setShowSearchForm ] = useState( __DEV__ );

	const {
		showInsertionPoint,
		hideInsertionPoint,
		clearSelectedBlock,
		insertBlock,
		removeBlock,
		resetBlocks,
		insertDefaultBlock,
	} = useDispatch( blockEditorStore );

	const { items, destinationRootClientId } = useSelect( ( select ) => {
		const {
			getInserterItems,
			getBlockRootClientId,
			getBlockSelectionEnd,
		} = select( blockEditorStore );

		let targetRootClientId = rootClientId;
		if ( ! targetRootClientId && ! clientId && ! isAppender ) {
			const end = getBlockSelectionEnd();
			if ( end ) {
				targetRootClientId = getBlockRootClientId( end ) || undefined;
			}
		}

		return {
			items: getInserterItems( targetRootClientId ),
			destinationRootClientId: targetRootClientId,
		};
	} );
	const { getBlockOrder, getBlockCount, canInsertBlockType } = useSelect(
		blockEditorStore
	);
	const { getBlockType } = useSelect( blocksStore );

	useEffect( () => {
		// Show/Hide insertion point on Mount/Dismount
		if ( shouldReplaceBlock ) {
			const count = getBlockCount();
			// Check if there is a rootClientId because that means it is a nested replaceable block
			// and we don't want to clear/reset all blocks.
			if ( count === 1 && ! rootClientId ) {
				// Removing the last block is not possilble with `removeBlock` action.
				// It always inserts a default block if the last of the blocks have been removed.
				clearSelectedBlock();
				resetBlocks( [] );
			} else {
				const blockToReplace = getBlockOrder( destinationRootClientId )[
					insertionIndex
				];
				removeBlock( blockToReplace, false );
			}
		}
		showInsertionPoint( destinationRootClientId, insertionIndex );

		// Show search form if there are enough items to filter.
		if ( getItems()?.length < MIN_ITEMS_FOR_SEARCH ) {
			setShowSearchForm( false );
		}

		return hideInsertionPoint;
	}, [] );

	const onClose = useCallback( () => {
		// if should replace but didn't insert any block
		// re-insert default block
		if ( shouldReplaceBlock ) {
			insertDefaultBlock( {}, destinationRootClientId, insertionIndex );
		}
		onDismiss();
	}, [ shouldReplaceBlock, destinationRootClientId, insertionIndex ] );

	const onInsert = useCallback(
		( item ) => {
			const { name, initialAttributes, innerBlocks } = item;

			const newBlock = createBlock(
				name,
				initialAttributes,
				innerBlocks
			);

			insertBlock(
				newBlock,
				insertionIndex,
				destinationRootClientId,
				true,
				{ source: 'inserter_menu' }
			);
		},
		[ insertBlock, destinationRootClientId, insertionIndex ]
	);

	/**
	 * Processes the inserter items to check
	 * if there's any copied block in the clipboard
	 * to add it as an extra item
	 */
	function getItems() {
		// Filter out reusable blocks (they will be added in another tab)
		let itemsToDisplay = items.filter(
			( { name } ) => name !== 'core/block'
		);

		itemsToDisplay = searchItems( itemsToDisplay, filterValue );

		const clipboard = getClipboard();
		let clipboardBlock = rawHandler( { HTML: clipboard } )[ 0 ];

		const canAddClipboardBlock = canInsertBlockType(
			clipboardBlock?.name,
			destinationRootClientId
		);

		if ( ! canAddClipboardBlock ) {
			return itemsToDisplay;
		}

		const { icon, name } = getBlockType( clipboardBlock.name );
		const { attributes: initialAttributes, innerBlocks } = clipboardBlock;

		clipboardBlock = {
			id: 'clipboard',
			name,
			icon,
			initialAttributes,
			innerBlocks,
		};

		return [ clipboardBlock, ...itemsToDisplay ];
	}

	return (
		<BottomSheet
			isVisible={ true }
			onClose={ onClose }
			hideHeader
			hasNavigation
			setMinHeightToMaxHeight={ showSearchForm }
		>
			<BottomSheetConsumer>
				{ ( { listProps, safeAreaBottomInset } ) => (
					<View>
						{ showSearchForm && (
							<InserterSearchForm
								onChange={ ( value ) => {
									setFilterValue( value );
								} }
								value={ filterValue }
								onLayout={ ( event ) => {
									const { height } = event.nativeEvent.layout;
									setSearchFormHeight( height );
								} }
							/>
						) }

						<InserterSearchResults
							items={ getItems() }
							onSelect={ ( item ) => {
								onInsert( item );
								onSelect( item );
							} }
							{ ...{
								listProps,
								safeAreaBottomInset,
								searchFormHeight,
							} }
						/>
					</View>
				) }
			</BottomSheetConsumer>
		</BottomSheet>
	);
}

export default InserterMenu;