asWebvewUri requires guid.

src/vs/workbench/api/browser/mainThreadNotebook.ts

@@ -377,6 +377,7 @@ export class MainThreadNotebookController implements IMainNotebookController {
 					{ editType: CellEditType.Delete, count: mainthreadNotebook.textModel.cells.length, index: 0 },
 					{ editType: CellEditType.Insert, index: 0, cells: data.cells }
 				]);
+				mainthreadNotebook.textModel.updateRenderers(data.renderers);
 			}
 			return mainthreadNotebook.textModel;
 		}
@@ -397,6 +398,8 @@ export class MainThreadNotebookController implements IMainNotebookController {
 				}
 			]);
 
+			// TODO@rebornix load renderers after reloading
+
 			this._mainThreadNotebook.addNotebookDocument({
 				viewType: document.viewType,
 				handle: document.handle,
@@ -429,6 +432,7 @@ export class MainThreadNotebookController implements IMainNotebookController {
 
 		document.textModel.languages = data.languages;
 		document.textModel.metadata = data.metadata;
+		document.textModel.updateRenderers(data.renderers);
 
 		if (data.cells.length) {
 			document.textModel.initialize(data!.cells);

src/vs/workbench/api/common/extHostNotebook.ts

@@ -891,9 +891,11 @@ export class ExtHostNotebookController implements ExtHostNotebookShape, ExtHostN
 						source: cell.source,
 						outputs: transformedOutputs
 					};
-				})
+				}),
+				renderers: [] as number[]
 			};
 
+			dto.renderers = [...renderers];
 			return dto;
 		}
 

src/vs/workbench/contrib/notebook/browser/notebookEditorWidget.ts

@@ -67,9 +67,6 @@ export class NotebookEditorOptions extends EditorOptions {
 	}
 }
 
-
-let EDITOR_ID = 0;
-
 export class NotebookEditorWidget extends Disposable implements INotebookEditor {
 	static readonly ID: string = 'workbench.editor.notebook';
 	private static readonly EDITOR_MEMENTOS = new Map<string, EditorMemento<any>>();
@@ -95,7 +92,6 @@ export class NotebookEditorWidget extends Disposable implements INotebookEditor
 	private scrollBeyondLastLine: boolean;
 	private readonly memento: Memento;
 	private _isDisposed: boolean = false;
-	private readonly _id: number;
 	constructor(
 		@IInstantiationService private readonly instantiationService: IInstantiationService,
 		@IStorageService storageService: IStorageService,
@@ -105,7 +101,6 @@ export class NotebookEditorWidget extends Disposable implements INotebookEditor
 		@ILayoutService private readonly _layoutService: ILayoutService
 	) {
 		super();
-		this._id = (++EDITOR_ID);
 		this.memento = new Memento(NotebookEditorWidget.ID, storageService);
 
 		this.outputRenderer = new OutputRenderer(this, this.instantiationService);
@@ -124,8 +119,9 @@ export class NotebookEditorWidget extends Disposable implements INotebookEditor
 		this.notebookService.addNotebookEditor(this);
 	}
 
+	private _uuid = generateUuid();
 	public getId(): string {
-		return 'vs.editor.INotebookEditor:' + this._id;
+		return this._uuid;
 	}
 
 	private readonly _onDidChangeModel = new Emitter<NotebookTextModel | undefined>();

src/vs/workbench/contrib/notebook/common/notebookCommon.ts

@@ -329,6 +329,7 @@ export interface NotebookDataDto {
 	readonly cells: ICellDto2[];
 	readonly languages: string[];
 	readonly metadata: NotebookDocumentMetadata;
+	readonly renderers: number[];
 }