[Block Library - Latest Posts]: Prevent opening the links in editor (#…

…40593)

* use css to make them unclicable

* show toaster with warning

* update copy

* announce once per block

packages/block-library/src/latest-posts/edit.js

@@ -28,9 +28,11 @@ import {
 	useBlockProps,
 	store as blockEditorStore,
 } from '@wordpress/block-editor';
-import { useSelect } from '@wordpress/data';
+import { useSelect, useDispatch } from '@wordpress/data';
 import { pin, list, grid } from '@wordpress/icons';
 import { store as coreStore } from '@wordpress/core-data';
+import { store as noticeStore } from '@wordpress/notices';
+import { useInstanceId } from '@wordpress/compose';
 
 /**
  * Internal dependencies
@@ -66,6 +68,7 @@ function getFeaturedImageDetails( post, size ) {
 }
 
 export default function LatestPostsEdit( { attributes, setAttributes } ) {
+	const instanceId = useInstanceId( LatestPostsEdit );
 	const {
 		postsToShow,
 		order,
@@ -148,6 +151,20 @@ export default function LatestPostsEdit( { attributes, setAttributes } ) {
 		]
 	);
 
+	// If a user clicks to a link prevent redirection and show a warning.
+	const { createWarningNotice, removeNotice } = useDispatch( noticeStore );
+	let noticeId;
+	const showRedirectionPreventedNotice = ( event ) => {
+		event.preventDefault();
+		// Remove previous warning if any, to show one at a time per block.
+		removeNotice( noticeId );
+		noticeId = `block-library/core/latest-posts/redirection-prevented/${ instanceId }`;
+		createWarningNotice( __( 'Links are disabled in the editor.' ), {
+			id: noticeId,
+			type: 'snackbar',
+		} );
+	};
+
 	const imageSizeOptions = imageSizes
 		.filter( ( { slug } ) => slug !== 'full' )
 		.map( ( { name, slug } ) => ( {
@@ -466,7 +483,11 @@ export default function LatestPostsEdit( { attributes, setAttributes } ) {
 								.join( ' ' ) }
 							{ /* translators: excerpt truncation character, default …  */ }
 							{ __( ' … ' ) }
-							<a href={ post.link } rel="noopener noreferrer">
+							<a
+								href={ post.link }
+								rel="noopener noreferrer"
+								onClick={ showRedirectionPreventedNotice }
+							>
 								{ __( 'Read more' ) }
 							</a>
 						</>
@@ -483,6 +504,9 @@ export default function LatestPostsEdit( { attributes, setAttributes } ) {
 											className="wp-block-latest-posts__post-title"
 											href={ post.link }
 											rel="noreferrer noopener"
+											onClick={
+												showRedirectionPreventedNotice
+											}
 										>
 											{ featuredImage }
 										</a>
@@ -501,6 +525,7 @@ export default function LatestPostsEdit( { attributes, setAttributes } ) {
 										  }
 										: undefined
 								}
+								onClick={ showRedirectionPreventedNotice }
 							>
 								{ ! titleTrimmed ? __( '(no title)' ) : null }
 							</a>