Fix #30838

src/vs/editor/standalone/browser/simpleServices.ts

@@ -521,6 +521,9 @@ export class SimpleWorkspaceContextService implements IWorkspaceContextService {
 
 	private static SCHEME: 'inmemory';
 
+	private readonly _onDidChangeWorkspaceName: Emitter<void> = new Emitter<void>();
+	public readonly onDidChangeWorkspaceName: Event<void> = this._onDidChangeWorkspaceName.event;
+
 	private readonly _onDidChangeWorkspaceRoots: Emitter<void> = new Emitter<void>();
 	public readonly onDidChangeWorkspaceRoots: Event<void> = this._onDidChangeWorkspaceRoots.event;
 

src/vs/platform/workspace/common/workspace.ts

@@ -48,6 +48,11 @@ export interface IWorkspaceContextService {
 	 */
 	saveWorkspace(location: URI): TPromise<void>;
 
+	/**
+	 * An event which fires on workspace name changes.
+	 */
+	onDidChangeWorkspaceName: Event<void>;
+
 	/**
 	 * An event which fires on workspace roots change.
 	 */

src/vs/workbench/parts/files/browser/views/explorerView.ts

@@ -135,7 +135,7 @@ export class ExplorerView extends CollapsibleView {
 			const title = workspace.roots.map(root => labels.getPathLabel(root.fsPath, void 0, this.environmentService)).join();
 			titleSpan.text(this.name).title(title);
 		};
-		this.toDispose.push(this.contextService.onDidChangeWorkspaceRoots(() => setHeader()));
+		this.toDispose.push(this.contextService.onDidChangeWorkspaceName(() => setHeader()));
 		setHeader();
 
 		super.renderHeader(container);

src/vs/workbench/services/configuration/node/configuration.ts

@@ -174,6 +174,9 @@ export class WorkspaceService extends Disposable implements IWorkspaceConfigurat
 	protected readonly _onDidChangeWorkspaceRoots: Emitter<void> = this._register(new Emitter<void>());
 	public readonly onDidChangeWorkspaceRoots: Event<void> = this._onDidChangeWorkspaceRoots.event;
 
+	protected readonly _onDidChangeWorkspaceName: Emitter<void> = this._register(new Emitter<void>());
+	public readonly onDidChangeWorkspaceName: Event<void> = this._onDidChangeWorkspaceName.event;
+
 	constructor() {
 		super();
 		this._configuration = new Configuration(new BaseConfiguration(new ConfigurationModel<any>(), new ConfigurationModel<any>()), new ConfigurationModel<any>(), new StrictResourceMap<FolderConfigurationModel<any>>(), this.workspace);
@@ -392,6 +395,7 @@ export class WorkspaceServiceImpl extends WorkspaceService {
 	}
 
 	private onWorkspaceSaved(configPath: URI): TPromise<void> {
+		let workspaceName = this.workspace.name;
 		this.workspaceConfigPath = configPath;
 
 		// Reset the workspace if current workspace is single folder
@@ -403,9 +407,14 @@ export class WorkspaceServiceImpl extends WorkspaceService {
 		// Update workspace configuration path with new path
 		else {
 			this.workspace.configuration = configPath;
+			this.workspace.name = getWorkspaceLabel(this.environmentService, { id: this.workspace.id, configPath: this.workspace.configuration.fsPath });
 		}
 
-		return this.initialize();
+		return this.initialize().then(() => {
+			if (workspaceName !== this.workspace.name) {
+				this._onDidChangeWorkspaceName.fire();
+			}
+		});
 	}
 
 	private initializeMulitFolderWorkspace(): TPromise<void> {

src/vs/workbench/test/workbenchTestServices.ts

@@ -70,6 +70,7 @@ export class TestContextService implements IWorkspaceContextService {
 	private id: string;
 	private options: any;
 
+	private _onDidChangeWorkspaceName: Emitter<void>;
 	private _onDidChangeWorkspaceRoots: Emitter<void>;
 
 	constructor(workspace: any = TestWorkspace, options: any = null) {
@@ -79,6 +80,10 @@ export class TestContextService implements IWorkspaceContextService {
 		this._onDidChangeWorkspaceRoots = new Emitter<void>();
 	}
 
+	public get onDidChangeWorkspaceName(): Event<void> {
+		return this._onDidChangeWorkspaceName.event;
+	}
+
 	public get onDidChangeWorkspaceRoots(): Event<void> {
 		return this._onDidChangeWorkspaceRoots.event;
 	}