Show notice on save in site editor (#36897)

* Show notice on save in site editor
Co-authored-by: Kai Hao <[email protected]>

packages/e2e-tests/specs/site-editor/multi-entity-saving.test.js

@@ -27,7 +27,7 @@ describe( 'Multi-entity save flow', () => {
 	const activatedTemplatePartSelector = `${ templatePartSelector }.block-editor-block-list__layout`;
 	const savePanelSelector = '.entities-saved-states__panel';
 	const closePanelButtonSelector =
-		'.editor-post-publish-panel__header-cancel-button button';
+		'.editor-post-publish-panel__header-cancel-button button:not(:disabled)';
 	const createNewButtonSelector =
 		'//button[contains(text(), "New template part")]';
 
@@ -158,7 +158,10 @@ describe( 'Multi-entity save flow', () => {
 			await assertExistance( savePanelSelector, false );
 
 			// Close publish panel.
-			await page.click( closePanelButtonSelector );
+			const closePanelButton = await page.waitForSelector(
+				closePanelButtonSelector
+			);
+			await closePanelButton.click();
 
 			// Verify saving is disabled.
 			const draftSaved = await page.waitForSelector( draftSavedSelector );
@@ -167,13 +170,22 @@ describe( 'Multi-entity save flow', () => {
 			await assertExistance( saveA11ySelector, false );
 
 			await publishPost();
+			// Wait for the success notice specifically for the published post.
+			// `publishPost()` has a similar check but it only checks for the
+			// existence of any snackbars. In this case, there's another "Site updated"
+			// notice which will be sufficient for that and thus creating a false-positive.
+			await page.waitForXPath(
+				'//*[@id="a11y-speak-polite"][contains(text(), "Post published")]'
+			);
 
 			// Update the post.
 			await page.click( '.editor-post-title' );
 			await page.keyboard.type( '...more title!' );
 
 			// Verify update button is enabled.
-			const enabledSaveButton = await page.$( enabledSavePostSelector );
+			const enabledSaveButton = await page.waitForSelector(
+				enabledSavePostSelector
+			);
 			expect( enabledSaveButton ).not.toBeNull();
 			// Verify multi-entity saving not enabled.
 			await assertMultiSaveDisabled();

packages/editor/src/components/entities-saved-states/index.js

@@ -14,6 +14,7 @@ import { store as coreStore } from '@wordpress/core-data';
 import { store as blockEditorStore } from '@wordpress/block-editor';
 import { __experimentalUseDialog as useDialog } from '@wordpress/compose';
 import { close as closeIcon } from '@wordpress/icons';
+import { store as noticesStore } from '@wordpress/notices';
 
 /**
  * Internal dependencies
@@ -80,6 +81,10 @@ export default function EntitiesSavedStates( { close } ) {
 		blockEditorStore
 	);
 
+	const { createSuccessNotice, createErrorNotice } = useDispatch(
+		noticesStore
+	);
+
 	// To group entities by type.
 	const partitionedSavables = groupBy( dirtyEntityRecords, 'name' );
 
@@ -139,6 +144,7 @@ export default function EntitiesSavedStates( { close } ) {
 		close( entitiesToSave );
 
 		const siteItemsToSave = [];
+		const pendingSavedRecords = [];
 		entitiesToSave.forEach( ( { kind, name, key, property } ) => {
 			if ( 'root' === kind && 'site' === name ) {
 				siteItemsToSave.push( property );
@@ -153,19 +159,39 @@ export default function EntitiesSavedStates( { close } ) {
 					editEntityRecord( kind, name, key, { status: 'publish' } );
 				}
 
-				saveEditedEntityRecord( kind, name, key );
+				pendingSavedRecords.push(
+					saveEditedEntityRecord( kind, name, key )
+				);
 			}
 		} );
 		if ( siteItemsToSave.length ) {
-			saveSpecifiedEntityEdits(
-				'root',
-				'site',
-				undefined,
-				siteItemsToSave
+			pendingSavedRecords.push(
+				saveSpecifiedEntityEdits(
+					'root',
+					'site',
+					undefined,
+					siteItemsToSave
+				)
 			);
 		}
 
 		__unstableMarkLastChangeAsPersistent();
+
+		Promise.all( pendingSavedRecords )
+			.then( ( values ) => {
+				if (
+					values.some( ( value ) => typeof value === 'undefined' )
+				) {
+					createErrorNotice( __( 'Saving failed.' ) );
+				} else {
+					createSuccessNotice( __( 'Site updated.' ), {
+						type: 'snackbar',
+					} );
+				}
+			} )
+			.catch( ( error ) =>
+				createErrorNotice( `${ __( 'Saving failed.' ) } ${ error }` )
+			);
 	};
 
 	// Explicitly define this with no argument passed.  Using `close` on