add registration change event, #48275

src/vs/platform/files/common/files.ts

@@ -41,6 +41,11 @@ export interface IFileService {
 	 */
 	onAfterOperation: Event<FileOperationEvent>;
 
+	/**
+	 * An event that is fired when a file system provider is added or removed
+	 */
+	onDidChangeFileSystemProviderRegistrations?: Event<IFileSystemProviderRegistrationEvent>;
+
 	/**
 	 * Registeres a file system provider for a certain scheme.
 	 */
@@ -224,6 +229,12 @@ export interface IFileSystemProvider {
 	write?(fd: number, pos: number, data: Uint8Array, offset: number, length: number): TPromise<number>;
 }
 
+export interface IFileSystemProviderRegistrationEvent {
+	added: boolean;
+	scheme: string;
+	provider?: IFileSystemProvider;
+}
+
 export enum FileOperation {
 	CREATE,
 	DELETE,

src/vs/workbench/services/files/electron-browser/remoteFileService.ts

@@ -6,6 +6,7 @@
 
 import { posix } from 'path';
 import { flatten, isFalsyOrEmpty } from 'vs/base/common/arrays';
+import { Event, Emitter } from 'vs/base/common/event';
 import { IDisposable, dispose } from 'vs/base/common/lifecycle';
 import { TernarySearchTree, keys } from 'vs/base/common/map';
 import { Schemas } from 'vs/base/common/network';
@@ -16,7 +17,7 @@ import { ITextResourceConfigurationService } from 'vs/editor/common/services/res
 import { localize } from 'vs/nls';
 import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 import { IEnvironmentService } from 'vs/platform/environment/common/environment';
-import { FileChangesEvent, FileOperation, FileOperationError, FileOperationEvent, FileOperationResult, IContent, ICreateFileOptions, IFileStat, IFileSystemProvider, IFilesConfiguration, IResolveContentOptions, IResolveFileOptions, IResolveFileResult, IStat, IStreamContent, ITextSnapshot, IUpdateContentOptions, StringSnapshot, FileSystemProviderCapabilities, FileOptions } from 'vs/platform/files/common/files';
+import { FileChangesEvent, FileOperation, FileOperationError, FileOperationEvent, FileOperationResult, FileOptions, FileSystemProviderCapabilities, IContent, ICreateFileOptions, IFileStat, IFileSystemProvider, IFilesConfiguration, IResolveContentOptions, IResolveFileOptions, IResolveFileResult, IStat, IStreamContent, ITextSnapshot, IUpdateContentOptions, StringSnapshot, IFileSystemProviderRegistrationEvent } from 'vs/platform/files/common/files';
 import { ILifecycleService } from 'vs/platform/lifecycle/common/lifecycle';
 import { INotificationService } from 'vs/platform/notification/common/notification';
 import { IStorageService } from 'vs/platform/storage/common/storage';
@@ -147,6 +148,9 @@ export class RemoteFileService extends FileService {
 
 	private readonly _provider: Map<string, IFileSystemProvider>;
 	private readonly _lastKnownSchemes: string[];
+	private readonly _onDidChangeFileSystemProviderRegistrations = new Emitter<IFileSystemProviderRegistrationEvent>();
+
+	readonly onDidChangeFileSystemProviderRegistrations: Event<IFileSystemProviderRegistrationEvent> = this._onDidChangeFileSystemProviderRegistrations.event;
 
 	constructor(
 		@IExtensionService private readonly _extensionService: IExtensionService,
@@ -179,6 +183,7 @@ export class RemoteFileService extends FileService {
 		}
 
 		this._provider.set(scheme, provider);
+		this._onDidChangeFileSystemProviderRegistrations.fire({ added: true, scheme, provider });
 		this._storageService.store('remote_schemes', JSON.stringify(keys(this._provider)));
 
 		const reg = provider.onDidChangeFile(changes => {
@@ -187,6 +192,7 @@ export class RemoteFileService extends FileService {
 		});
 		return {
 			dispose: () => {
+				this._onDidChangeFileSystemProviderRegistrations.fire({ added: false, scheme, provider });
 				this._provider.delete(scheme);
 				reg.dispose();
 			}