Enable to add a launch configuration snippet when there is no launch.json

fixes #18853

src/vs/base/browser/ui/selectBox/selectBox.ts

@@ -70,15 +70,6 @@ export class SelectBox extends Widget {
 		}
 	}
 
-	public set enabled(value: boolean) {
-		dom.toggleClass(this.container, 'disabled', !value);
-		this.selectElement.disabled = !value;
-	}
-
-	public get enabled(): boolean {
-		return !this.selectElement.disabled;
-	}
-
 	public blur(): void {
 		if (this.selectElement) {
 			this.selectElement.blur();

src/vs/workbench/parts/debug/browser/debugActionItems.ts

@@ -77,9 +77,7 @@ export class StartDebugActionItem extends EventEmitter implements IActionItem {
 		}));
 
 		this.toDispose.push(dom.addDisposableListener(this.start, dom.EventType.MOUSE_DOWN, () => {
-			if (this.selectBox.enabled) {
-				dom.addClass(this.start, 'active');
-			}
+			dom.addClass(this.start, 'active');
 		}));
 		this.toDispose.push(dom.addDisposableListener(this.start, dom.EventType.MOUSE_UP, () => {
 			dom.removeClass(this.start, 'active');
@@ -104,7 +102,7 @@ export class StartDebugActionItem extends EventEmitter implements IActionItem {
 	}
 
 	public isEnabled(): boolean {
-		return this.selectBox.enabled;
+		return true;
 	}
 
 	public focus(): void {
@@ -119,24 +117,15 @@ export class StartDebugActionItem extends EventEmitter implements IActionItem {
 		this.toDispose = lifecycle.dispose(this.toDispose);
 	}
 
-	private setEnabled(enabled: boolean): void {
-		this.selectBox.enabled = enabled;
-		if (!enabled) {
-			this.selectBox.setOptions([nls.localize('noConfigurations', "No Configurations")], 0);
-		}
-	}
-
 	private updateOptions(): void {
 		const options = this.debugService.getConfigurationManager().getConfigurationNames();
 		if (options.length === 0) {
-			this.setEnabled(false);
-		} else {
-			this.setEnabled(true);
-			const selected = options.indexOf(this.debugService.getViewModel().selectedConfigurationName);
-			options.push(StartDebugActionItem.SEPARATOR);
-			options.push(StartDebugActionItem.ADD_CONFIGURATION);
-			this.selectBox.setOptions(options, selected, options.length - 2);
+			options.push(nls.localize('noConfigurations', "No Configurations"));
 		}
+		const selected = options.indexOf(this.debugService.getViewModel().selectedConfigurationName);
+		options.push(StartDebugActionItem.SEPARATOR);
+		options.push(StartDebugActionItem.ADD_CONFIGURATION);
+		this.selectBox.setOptions(options, selected, options.length - 2);
 	}
 }