explore classifying extensions

src/vs/platform/extensionManagement/common/extensionManagement.ts

@@ -112,6 +112,8 @@ export interface IExtensionContributions {
 	remoteAuthorityResolvers?: IRemoteAuthorityResolver[];
 }
 
+export type ExtensionKind = 'ui' | 'workspace';
+
 export interface IExtensionManifest {
 	name: string;
 	publisher: string;
@@ -126,6 +128,7 @@ export interface IExtensionManifest {
 	activationEvents?: string[];
 	extensionDependencies?: string[];
 	extensionPack?: string[];
+	extensionKind?: ExtensionKind;
 	contributes?: IExtensionContributions;
 	repository?: {
 		url: string;

src/vs/platform/extensions/common/extensions.ts

@@ -3,6 +3,31 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
+import { IExtensionManifest } from 'vs/platform/extensionManagement/common/extensionManagement';
+import { getGalleryExtensionId } from 'vs/platform/extensionManagement/common/extensionManagementUtil';
+
 export const MANIFEST_CACHE_FOLDER = 'CachedExtensions';
 export const USER_MANIFEST_CACHE_FILE = 'user';
 export const BUILTIN_MANIFEST_CACHE_FILE = 'builtin';
+
+const uiExtensions = new Set<string>();
+uiExtensions.add('msjsdiag.debugger-for-chrome');
+
+export function isUIExtension(manifest: IExtensionManifest, configurationService: IConfigurationService): boolean {
+	const extensionId = getGalleryExtensionId(manifest.publisher, manifest.name);
+	const configuredUIExtensions = configurationService.getValue<string[]>('_workbench.uiExtensions') || [];
+	if (configuredUIExtensions.length) {
+		if (configuredUIExtensions.indexOf(extensionId) !== -1) {
+			return true;
+		}
+		if (configuredUIExtensions.indexOf(`-${extensionId}`) !== -1) {
+			return false;
+		}
+	}
+	switch (manifest.extensionKind) {
+		case 'ui': return true;
+		case 'workspace': return false;
+		default: return uiExtensions.has(extensionId) || !manifest.main;
+	}
+}