[1000] Add support for semantic undo redo

Bug: #1000
Signed-off-by: Florian ROUËNÉ <florian.rouene@obeosoft.com>

Author: frouene

CHANGELOG.adoc

@@ -54,6 +54,7 @@ The changes are:
 - https://github.com/eclipse-syson/syson/issues/977[#977] [validation] SysON now implements the constraints (a.k.a. validation rules) from the SysMLv2 specification.
 The _Validation_ view show the results of the execution of the constraints on your models.
 - https://github.com/eclipse-syson/syson/issues/987[#987] Implementation of drag and drop in Explorer view.
+- https://github.com/eclipse-syson/syson/issues/1000[#1000] Add support for semantic undo redo.
 
 
 == v2025.1.0

doc/content/modules/user-manual/pages/release-notes/2025.2.0.adoc

@@ -9,7 +9,11 @@ The _Validation_ view show the results of the execution of the constraints on yo
 
 - *Right-click to display contextual menu (a.k.a. palette)*: In all diagrams, the contextual menu is now available on right-click instead of left-click.
 
-- *Drag and drop in Explorer view* : User can now move semantic elements using a drag and drop operation in the _Explorer_ view.
+- *Drag and drop in Explorer view* : Users can now move semantic elements using a drag and drop operation in the _Explorer_ view.
+
+- *Undo/redo*: Users can now undo and redo any semantic change (i.e. in _Explorer_ and _Details_ views) with "CTRL + z" and "CTRL + y".
+Undo/redo is not available yet in diagrams.
+
 
 == Breaking changes
 
@@ -69,7 +73,10 @@ In this case it corresponds to the members of _Package 1_ that you can also see
 
 - The _Validation_ view now displays the result of the execution of the constraints (a.k.a. validation rules) from the SysMLv2 specification.
 
-- User can now move semantic elements using the drag and drop operation in the _Explorer_ view.
+- Users can now move semantic elements using the drag and drop operation in the _Explorer_ view.
+
+- Users can now undo and redo any semantic change (i.e. in _Explorer_ and _Details_ views) with "CTRL + z" and "CTRL + y".
+Undo/redo is not available yet in diagrams.
 
 == Improvements
 

frontend/syson/src/extensions/ReferenceWidgetDocumentTransform.ts

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024 Obeo.
+ * Copyright (c) 2024, 2025 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -11,7 +11,11 @@
  *     Obeo - initial API and implementation
  *******************************************************************************/
 
-import { ComponentExtension, ExtensionRegistryMergeStrategy } from '@eclipse-sirius/sirius-components-core';
+import {
+  ComponentExtension,
+  ExtensionRegistryMergeStrategy,
+  DataExtension,
+} from '@eclipse-sirius/sirius-components-core';
 import { DefaultExtensionRegistryMergeStrategy } from '@eclipse-sirius/sirius-web-application';
 import { treeItemContextMenuEntryExtensionPoint } from '@eclipse-sirius/sirius-components-trees';
 
@@ -39,4 +43,25 @@ export class SysONExtensionRegistryMergeStrategy
     }
     return super.mergeComponentExtensions(_identifier, existingValues, newValues);
   }
+
+  public override mergeDataExtensions(
+    identifier: string,
+    existingValues: DataExtension<any>,
+    newValues: DataExtension<any>
+  ): DataExtension<any> {
+    if (identifier === 'apolloClient#apolloClientOptionsConfigurers') {
+      return this.mergeApolloClientContributions(existingValues, newValues);
+    }
+    return newValues;
+  }
+
+  private mergeApolloClientContributions(
+    existingApolloClientContributions: DataExtension<any>,
+    newApolloClientContributions: DataExtension<any>
+  ): DataExtension<any> {
+    return {
+      identifier: 'syson_apolloClient#apolloClientOptionsConfigurers',
+      data: [...existingApolloClientContributions.data, ...newApolloClientContributions.data],
+    };
+  }
 }

frontend/syson/src/extensions/SysONExtensionRegistryMergeStrategy.ts

@@ -47,7 +47,6 @@ import {
 import { createRoot } from 'react-dom/client';
 
 import { httpOrigin, wsOrigin } from './core/URL';
-import { referenceWidgetDocumentTransform } from './extensions/ReferenceWidgetDocumentTransform';
 import { SysONDocumentTreeItemContextMenuContribution } from './extensions/SysONDocumentTreeItemContextMenuContribution';
 import { SysONExtensionRegistryMergeStrategy } from './extensions/SysONExtensionRegistryMergeStrategy';
 import { SysONFooter } from './extensions/SysONFooter';
@@ -75,18 +74,6 @@ extensionRegistry.putData(navigationBarMenuHelpURLExtensionPoint, {
   data: 'https://doc.mbse-syson.org',
 });
 
-const widgetsApolloClientOptionsConfigurer: ApolloClientOptionsConfigurer = (currentOptions) => {
-  const { documentTransform } = currentOptions;
-
-  const newDocumentTransform = documentTransform
-    ? documentTransform.concat(referenceWidgetDocumentTransform)
-    : referenceWidgetDocumentTransform;
-  return {
-    ...currentOptions,
-    documentTransform: newDocumentTransform,
-  };
-};
-
 const apolloClientOptionsConfigurer: ApolloClientOptionsConfigurer = (currentOptions) => {
   const { documentTransform } = currentOptions;
 
@@ -99,8 +86,8 @@ const apolloClientOptionsConfigurer: ApolloClientOptionsConfigurer = (currentOpt
   };
 };
 extensionRegistry.putData(apolloClientOptionsConfigurersExtensionPoint, {
-  identifier: `siriusWeb_${apolloClientOptionsConfigurersExtensionPoint.identifier}`,
-  data: [apolloClientOptionsConfigurer, widgetsApolloClientOptionsConfigurer],
+  identifier: `syson_${apolloClientOptionsConfigurersExtensionPoint.identifier}`,
+  data: [apolloClientOptionsConfigurer],
 });
 
 extensionRegistry.addComponent(diagramPanelActionExtensionPoint, {