From 7b8acfa1fd1474f52fb30d499866c96e977826e8 Mon Sep 17 00:00:00 2001
From: Luigi Teschio <gigitux@gmail.com>
Date: Thu, 28 Nov 2024 15:10:05 +0100
Subject: [PATCH] fix performance issue

---
 .../dataviews/src/dataform-hooks/use-form.ts  | 12 +++---
 .../dataforms-layouts/data-form-layout.tsx    | 38 ++++++++++++-------
 2 files changed, 30 insertions(+), 20 deletions(-)

diff --git a/packages/dataviews/src/dataform-hooks/use-form.ts b/packages/dataviews/src/dataform-hooks/use-form.ts
index 8822f09a3133d..23fed3f72894f 100644
--- a/packages/dataviews/src/dataform-hooks/use-form.ts
+++ b/packages/dataviews/src/dataform-hooks/use-form.ts
@@ -18,20 +18,20 @@ export const useForm = < Item >(
 	} );
 
 	const setTouchedFields = ( touchedFields: string[] ) => {
-		setForm( {
-			...form,
+		setForm( ( prevForm ) => ( {
+			...prevForm,
 			touchedFields,
-		} );
+		} ) );
 	};
 
 	const setErrors = ( field: string, error: string | undefined ) => {
-		setForm( {
-			...form,
+		setForm( ( prevForm ) => ( {
+			...prevForm,
 			messageErrors: {
 				...form.messageErrors,
 				[ field ]: error,
 			},
-		} );
+		} ) );
 	};
 
 	const isFormValid = ( data: Item ) => {
diff --git a/packages/dataviews/src/dataforms-layouts/data-form-layout.tsx b/packages/dataviews/src/dataforms-layouts/data-form-layout.tsx
index 8824726037ef9..7cf51fd710747 100644
--- a/packages/dataviews/src/dataforms-layouts/data-form-layout.tsx
+++ b/packages/dataviews/src/dataforms-layouts/data-form-layout.tsx
@@ -2,7 +2,7 @@
  * WordPress dependencies
  */
 import { __experimentalVStack as VStack } from '@wordpress/components';
-import { useContext, useEffect, useMemo } from '@wordpress/element';
+import { useContext, useEffect, useMemo, useRef } from '@wordpress/element';
 
 /**
  * Internal dependencies
@@ -48,9 +48,15 @@ export function DataFormLayout< Item >( {
 		[ form ]
 	);
 
+	const isFirstValidationAlreadyRunRef = useRef( false );
+
 	const { setTouchedFields, setErrors, touchedFields, messageErrors } = form;
 
 	useEffect( () => {
+		if ( isFirstValidationAlreadyRunRef.current ) {
+			return;
+		}
+
 		normalizedFormFields.forEach( ( formField ) => {
 			const { isValid, errorMessage } = formField.validation.callback( {
 				...data,
@@ -61,6 +67,8 @@ export function DataFormLayout< Item >( {
 				setErrors( formField.id, undefined );
 			}
 		} );
+
+		isFirstValidationAlreadyRunRef.current = true;
 	}, [ data, normalizedFormFields, setErrors ] );
 
 	return (
@@ -89,36 +97,38 @@ export function DataFormLayout< Item >( {
 					return children( FieldLayout, formField );
 				}
 
+				const shouldShowError = formField.validation
+					.showErrorOnlyWhenDirty
+					? touchedFields.includes( formField.id )
+					: true;
+
+				const errorMessage = shouldShowError
+					? messageErrors[ formField.id ]
+					: undefined;
+
 				return (
 					<FieldLayout
 						key={ formField.id }
 						data={ data }
 						field={ formField }
-						errorMessage={
-							( formField.validation.showErrorOnlyWhenDirty &&
-								touchedFields.includes( formField.id ) ) ||
-							( ! formField.validation.showErrorOnlyWhenDirty &&
-								messageErrors[ formField.id ] )
-								? messageErrors[ formField.id ]
-								: undefined
-						}
+						errorMessage={ errorMessage }
 						onChange={ ( value ) => {
+							onChange( value );
+
 							if ( ! touchedFields.includes( formField.id ) ) {
 								setTouchedFields( [
-									// @ts-ignore
-									...form.touchedFields,
+									...touchedFields,
 									formField.id,
 								] );
 							}
 
-							onChange( value );
-							const { isValid, errorMessage } =
+							const { isValid, errorMessage: message } =
 								formField.validation.callback( {
 									...data,
 									...value,
 								} );
 							if ( ! isValid ) {
-								setErrors( formField.id, errorMessage );
+								setErrors( formField.id, message );
 							} else {
 								setErrors( formField.id, undefined );
 							}