add setting 'outline.icons', #51864

src/vs/workbench/parts/outline/electron-browser/outline.contribution.ts

@@ -44,6 +44,11 @@ Registry.as<IConfigurationRegistry>(ConfigurationExtensions.Configuration).regis
 	'order': 117,
 	'type': 'object',
 	'properties': {
+		[OutlineConfigKeys.icons]: {
+			'description': localize('outline.showIcons', "Render Outline Elements with Icons."),
+			'type': 'boolean',
+			'default': true
+		},
 		[OutlineConfigKeys.problemsEnabled]: {
 			'description': localize('outline.showProblem', "Show Errors & Warnings on Outline Elements."),
 			'type': 'boolean',

src/vs/workbench/parts/outline/electron-browser/outline.ts

@@ -12,6 +12,7 @@ export const OutlineViewFiltered = new RawContextKey('outlineFiltered', false);
 export const OutlineViewFocused = new RawContextKey('outlineFocused', false);
 
 export enum OutlineConfigKeys {
+	'icons' = 'outline.icons',
 	'problemsEnabled' = 'outline.problems.enabled',
 	'problemsColors' = 'outline.problems.colors',
 	'problemsBadges' = 'outline.problems.badges'

src/vs/workbench/parts/outline/electron-browser/outlinePanel.css

@@ -87,6 +87,10 @@
 	padding-right: 3px;
 }
 
+.monaco-workbench .outline-panel.no-icons .outline-element .outline-element-icon {
+	display: none;
+}
+
 .monaco-workbench .outline-panel .outline-element .outline-element-label {
 	text-overflow: ellipsis;
 	overflow: hidden;

src/vs/workbench/parts/outline/electron-browser/outlinePanel.ts

@@ -356,6 +356,14 @@ export class OutlinePanel extends ViewletPanel {
 
 		this._disposables.push(this._tree, this._input);
 		this._disposables.push(this._outlineViewState.onDidChange(this._onDidChangeUserState, this));
+
+		// feature: toggle icons
+		dom.toggleClass(this._domNode, 'no-icons', !this._configurationService.getValue(OutlineConfigKeys.icons));
+		this.disposables.push(this._configurationService.onDidChangeConfiguration(e => {
+			if (e.affectsConfiguration(OutlineConfigKeys.icons)) {
+				dom.toggleClass(this._domNode, 'no-icons', !this._configurationService.getValue(OutlineConfigKeys.icons));
+			}
+		}));
 	}
 
 	protected layoutBody(height: number = this._cachedHeight): void {