From e092295dc678a8a7fe3a040239c3b9ade04b4d89 Mon Sep 17 00:00:00 2001
From: rebornix <penn.lv@gmail.com>
Date: Tue, 5 May 2020 11:29:28 -0700
Subject: [PATCH] onDidCloseNotebookDocument

---
 src/vs/vscode.proposed.d.ts                     | 1 +
 src/vs/workbench/api/common/extHost.api.impl.ts | 4 ++++
 src/vs/workbench/api/common/extHostNotebook.ts  | 3 +++
 3 files changed, 8 insertions(+)

diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index 1aeee093e26..4ba8c4269ae 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -1817,6 +1817,7 @@ declare module 'vscode' {
 		): Disposable;
 
 		export const onDidOpenNotebookDocument: Event<NotebookDocument>;
+		export const onDidCloseNotebookDocument: Event<NotebookDocument>;
 		// export const onDidChangeVisibleNotebookEditors: Event<NotebookEditor[]>;
 
 		// remove activeNotebookDocument, now that there is activeNotebookEditor.document
diff --git a/src/vs/workbench/api/common/extHost.api.impl.ts b/src/vs/workbench/api/common/extHost.api.impl.ts
index db72957372c..ca1efcab306 100644
--- a/src/vs/workbench/api/common/extHost.api.impl.ts
+++ b/src/vs/workbench/api/common/extHost.api.impl.ts
@@ -906,6 +906,10 @@ export function createApiFactoryAndRegisterActors(accessor: ServicesAccessor): I
 				checkProposedApiEnabled(extension);
 				return extHostNotebook.onDidOpenNotebookDocument;
 			},
+			get onDidCloseNotebookDocument(): Event<vscode.NotebookDocument> {
+				checkProposedApiEnabled(extension);
+				return extHostNotebook.onDidCloseNotebookDocument;
+			},
 			registerNotebookProvider: (viewType: string, provider: vscode.NotebookProvider) => {
 				checkProposedApiEnabled(extension);
 				return extHostNotebook.registerNotebookProvider(extension, viewType, provider);
diff --git a/src/vs/workbench/api/common/extHostNotebook.ts b/src/vs/workbench/api/common/extHostNotebook.ts
index 1df7a12584b..1b1d7db1f80 100644
--- a/src/vs/workbench/api/common/extHostNotebook.ts
+++ b/src/vs/workbench/api/common/extHostNotebook.ts
@@ -654,6 +654,8 @@ export class ExtHostNotebookController implements ExtHostNotebookShape, ExtHostN
 
 	private _onDidOpenNotebookDocument = new Emitter<vscode.NotebookDocument>();
 	onDidOpenNotebookDocument: Event<vscode.NotebookDocument> = this._onDidOpenNotebookDocument.event;
+	private _onDidCloseNotebookDocument = new Emitter<vscode.NotebookDocument>();
+	onDidCloseNotebookDocument: Event<vscode.NotebookDocument> = this._onDidCloseNotebookDocument.event;
 
 	constructor(mainContext: IMainContext, commands: ExtHostCommands, private _documentsAndEditors: ExtHostDocumentsAndEditors) {
 		this._proxy = mainContext.getProxy(MainContext.MainThreadNotebook);
@@ -898,6 +900,7 @@ export class ExtHostNotebookController implements ExtHostNotebookShape, ExtHostN
 		if (document) {
 			document.dispose();
 			this._documents.delete(URI.revive(uri).toString());
+			this._onDidCloseNotebookDocument.fire(document);
 		}
 
 		let editor = this._editors.get(URI.revive(uri).toString());