Ensure editor parts are active when calling "Save As"

- If more than one editor part for a model is open but not activated, when Save As is called the inactive editor parts will reference the model's previous file name (stored in a persistence memento) and when re-opened will show the "This View is no longer available" error message on the editor part.

- The workaround is to activate all editor parts for that model before calling "Save As".

com.archimatetool.editor/src/com/archimatetool/editor/model/impl/EditorModelManager.java

@@ -552,6 +552,10 @@ public boolean saveModelAs(IArchimateModel model) throws IOException {
             return false;
         }
 
+        // Activate inactive editor parts now otherwise they will reference the previous file name stored in the part's persistence memento
+        // and when re-activated show a blank editor part and a "This View is no longer available" message.
+        EditorManager.activateDiagramEditors(model);
+
         // Set new file
         model.setFile(file);
 

com.archimatetool.editor/src/com/archimatetool/editor/ui/services/EditorManager.java

@@ -160,6 +160,28 @@ public static void closeDiagramEditors(IArchimateModel model) {
         }
     }
 
+    /**
+     * Activate all Diagram Editor Parts for a model in order to update their memento save state
+     * Called by "Save As" so that inactive editor parts are not left with old file references when re-opening them.
+     */
+    public static void activateDiagramEditors(IArchimateModel model) {
+        if(model == null || !PlatformUI.isWorkbenchRunning()) {
+            return;
+        }
+
+        IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
+        for(IEditorReference ref : page.getEditorReferences()) {
+            try {
+                if(ref.getEditorInput() instanceof DiagramEditorInput input && input.getDiagramModel().getArchimateModel() == model) {
+                    ref.getEditor(true);
+                }
+            }
+            catch(PartInitException ex) {
+                ex.printStackTrace();
+            }
+        }
+    }
+
     /**
      * @param diagramModel
      * @return All editor references that have diagramModel in their editor input