debug: react on registration to update context keys

src/vs/workbench/contrib/debug/browser/debugConfigurationManager.ts

@@ -99,6 +99,7 @@ export class ConfigurationManager implements IConfigurationManager {
 	registerDebugAdapterFactory(debugTypes: string[], debugAdapterLauncher: IDebugAdapterFactory): IDisposable {
 		debugTypes.forEach(debugType => this.debugAdapterFactories.set(debugType, debugAdapterLauncher));
 		this.debuggersAvailable.set(this.debugAdapterFactories.size > 0);
+		this._onDidRegisterDebugger.fire();
 
 		return {
 			dispose: () => {
@@ -425,7 +426,6 @@ export class ConfigurationManager implements IConfigurationManager {
 			});
 
 			this.setCompoundSchemaValues();
-			this._onDidRegisterDebugger.fire();
 		});
 
 		breakpointsExtPoint.setHandler((extensions, delta) => {

src/vs/workbench/contrib/debug/browser/debugService.ts

@@ -160,7 +160,7 @@ export class DebugService implements IDebugService {
 		this.toDispose.push(this.viewModel.onDidFocusSession(() => {
 			this.onStateChange();
 		}));
-		this.toDispose.push(this.configurationManager.onDidSelectConfiguration(() => {
+		this.toDispose.push(Event.any(this.configurationManager.onDidRegisterDebugger, this.configurationManager.onDidSelectConfiguration)(() => {
 			this.debugUx.set(!!(this.state !== State.Inactive || (this.configurationManager.selectedConfiguration.name && this.configurationManager.hasDebuggers())) ? 'default' : 'simple');
 		}));
 		this.toDispose.push(this.model.onDidChangeCallStack(() => {