[3748] Store current diagram payload in DiagramContext

Bug: #3748
Signed-off-by: Michaël Charfadi <[email protected]>

CHANGELOG.adoc

@@ -65,6 +65,8 @@ As a result, the following maven modules have been deleted: `sirius-web-sample-a
 
 === New Features
 
+- https://github.com/eclipse-sirius/sirius-web/issues/3748[#3748] [diagram] Store current diagram payload in `DiagramContext`
+
 
 === Improvements
 

packages/diagrams/frontend/sirius-components-diagrams/src/contexts/DiagramContext.ts

@@ -17,6 +17,7 @@ const value: DiagramContextValue = {
   editingContextId: '',
   diagramId: '',
   refreshEventPayloadId: '',
+  payload: null,
   readOnly: false,
 };
 

packages/diagrams/frontend/sirius-components-diagrams/src/contexts/DiagramContext.types.ts

@@ -11,9 +11,12 @@
  *     Obeo - initial API and implementation
  *******************************************************************************/
 
+import { GQLDiagramEventPayload } from '../graphql/subscription/diagramEventSubscription.types';
+
 export interface DiagramContextValue {
   editingContextId: string;
   diagramId: string;
   refreshEventPayloadId: string;
+  payload: GQLDiagramEventPayload | null;
   readOnly: boolean;
 }

packages/diagrams/frontend/sirius-components-diagrams/src/representation/DiagramRepresentation.tsx

@@ -86,6 +86,7 @@ export const DiagramRepresentation = ({
   const [state, setState] = useState<DiagramRepresentationState>({
     id: crypto.randomUUID(),
     diagramRefreshedEventPayload: null,
+    payload: null,
     complete: false,
     message: null,
   });
@@ -105,6 +106,7 @@ export const DiagramRepresentation = ({
       if (isDiagramRefreshedEventPayload(diagramEvent)) {
         setState((prevState) => ({ ...prevState, diagramRefreshedEventPayload: diagramEvent }));
       }
+      setState((prevState) => ({ ...prevState, payload: diagramEvent }));
     }
   };
 
@@ -167,6 +169,7 @@ export const DiagramRepresentation = ({
           editingContextId,
           diagramId: representationId,
           refreshEventPayloadId: state.diagramRefreshedEventPayload.id,
+          payload: state.payload,
           readOnly,
         }}>
         <DiagramDescriptionContext.Provider value={{ diagramDescription }}>

packages/diagrams/frontend/sirius-components-diagrams/src/representation/DiagramRepresentation.types.ts

@@ -20,6 +20,7 @@ import {
 export interface DiagramRepresentationState {
   id: string;
   diagramRefreshedEventPayload: GQLDiagramRefreshedEventPayload | null;
+  payload: GQLDiagramEventPayload | null;
   complete: boolean;
   message: string | null;
 }