From 4a9fb7bd982ae16493fe6e997b542786c68356fc Mon Sep 17 00:00:00 2001
From: Axel RICHARD <axel.richard@obeo.fr>
Date: Thu, 23 Jun 2022 11:23:01 +0200
Subject: [PATCH] [1284] Remove tab when Form representation contains only one
 page

Bug: https://github.com/eclipse-sirius/sirius-components/issues/1284
Signed-off-by: Axel RICHARD <axel.richard@obeo.fr>
---
 CHANGELOG.adoc                                |  1 +
 .../representations/FormRepresentation.tsx    | 40 ++++++++++++++-----
 2 files changed, 31 insertions(+), 10 deletions(-)

diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index 9266b166d2..4237b7bfd1 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -50,6 +50,7 @@ This allows representation precondition expressions to be more precise as they k
 - https://github.com/eclipse-sirius/sirius-components/issues/1318[#1318] [studio] Java service classes used by studios (via `IJavaServiceProvider`) can now ask to be injected with any Spring bean available in the application context (for example `IObjectService` or other Sirius Components services they need for their implementation).
 - https://github.com/eclipse-sirius/sirius-components/issues/1288[#1288] [core] Improve support for precondition expression from representation description
 - https://github.com/eclipse-sirius/sirius-components/issues/1269[#1269] [diagram] Prevent dropping elements in a read only diagram
+- https://github.com/eclipse-sirius/sirius-components/issues/1284[#1284] [form] Remove tab when Form representation contains only one page
 
 === New features
 
diff --git a/packages/forms/frontend/sirius-components-forms/src/representations/FormRepresentation.tsx b/packages/forms/frontend/sirius-components-forms/src/representations/FormRepresentation.tsx
index 9bf43385c7..c22d164538 100644
--- a/packages/forms/frontend/sirius-components-forms/src/representations/FormRepresentation.tsx
+++ b/packages/forms/frontend/sirius-components-forms/src/representations/FormRepresentation.tsx
@@ -26,6 +26,7 @@ import {
   widgetSubscriptionsUpdatedEventPayloadFragment,
 } from '../form/FormEventFragments';
 import { GQLFormEventSubscription } from '../form/FormEventFragments.types';
+import { Page } from '../pages/Page';
 import {
   FormRepresentationContext,
   FormRepresentationEvent,
@@ -58,7 +59,11 @@ const formEventSubscription = gql(`
   ${formRefreshedEventPayloadFragment}
 `);
 
-const useFormRepresentationStyles = makeStyles(() => ({
+const useFormRepresentationStyles = makeStyles((theme) => ({
+  page: {
+    paddingLeft: theme.spacing(1),
+    paddingRight: theme.spacing(1),
+  },
   complete: {
     display: 'flex',
     alignItems: 'center',
@@ -129,15 +134,30 @@ export const FormRepresentation = ({
 
   let content = null;
   if (formRepresentation === 'ready') {
-    content = (
-      <Form
-        editingContextId={editingContextId}
-        form={form}
-        widgetSubscriptions={widgetSubscriptions}
-        setSelection={setSelection}
-        readOnly={readOnly}
-      />
-    );
+    if (form.pages.length > 1) {
+      content = (
+        <Form
+          editingContextId={editingContextId}
+          form={form}
+          widgetSubscriptions={widgetSubscriptions}
+          setSelection={setSelection}
+          readOnly={readOnly}
+        />
+      );
+    } else {
+      content = (
+        <div data-testid="page" className={classes.page}>
+          <Page
+            editingContextId={editingContextId}
+            formId={id}
+            page={form.pages[0]}
+            widgetSubscriptions={widgetSubscriptions}
+            setSelection={setSelection}
+            readOnly={readOnly}
+          />
+        </div>
+      );
+    }
   } else if (formRepresentation === 'complete') {
     content = (
       <div className={classes.complete}>