Refactor activitybar and clean up

src/vs/platform/explorers/browser/explorerExtensionPoint.ts

@@ -43,7 +43,7 @@ namespace schema {
 }
 
 ExtensionsRegistry.registerExtensionPoint<schema.IExplorer>('explorer', schema.explorerContribtion).setHandler(extensions => {
-	let baseOrder = 200;
+	let baseOrder = 200; // Stock viewlet order goes up to 100
 	let descriptors = [];
 
 	for (let extension of extensions) {
@@ -69,7 +69,8 @@ ExtensionsRegistry.registerExtensionPoint<schema.IExplorer>('explorer', schema.e
 			'workbench.view.customTreeExplorerViewlet.' + treeExplorerNodeProviderId,
 			treeLabel,
 			treeExplorerNodeProviderId,
-			baseOrder++
+			baseOrder++,
+			true
 		));
 	}
 	Registry.as<ViewletRegistry>(ViewletExtensions.Viewlets).registerExternalViewlets(descriptors);

src/vs/workbench/browser/parts/activitybar/activitybarPart.ts

@@ -33,7 +33,7 @@ export class ActivitybarPart extends Part implements IActivityService {
 	private viewletsToggleStatus: { [viewletId: string]: boolean; };
 	private registeredViewlets: string[];
 
-	private VIEWLETS_TOGGLE_STATUS = "workbench.activityBar.enabledExternalViewlets";
+	private VIEWLETS_TOGGLE_STATUS = "workbench.activityBar.viewletsToggleStatus";
 
 	constructor(
 		id: string,
@@ -103,6 +103,7 @@ export class ActivitybarPart extends Part implements IActivityService {
 	public toggleViewlet(viewletId: string): void {
 		this.viewletsToggleStatus[viewletId] = !this.viewletsToggleStatus[viewletId];
 		this.setViewletsToggleStatus();
+		this.refreshViewletSwitcher();
 	}
 
 	private setViewletsToggleStatus(): void {
@@ -128,25 +129,40 @@ export class ActivitybarPart extends Part implements IActivityService {
 		const $result = $('.content').appendTo($el);
 
 		// Top Actionbar with action items for each viewlet action
-		this.createViewletSwitcher($result.clone());
+		this.createViewletSwitcher($result.clone().addClass('position-top'));
 
 		return $result;
 	}
 
 	private createViewletSwitcher(div: Builder): void {
-
-		// Composite switcher is on top
 		this.viewletSwitcherBar = new ActionBar(div, {
 			actionItemProvider: (action: Action) => this.activityActionItems[action.id],
 			orientation: ActionsOrientation.VERTICAL,
 			ariaLabel: nls.localize('activityBarAriaLabel', "Active View Switcher")
 		});
-		this.viewletSwitcherBar.getContainer().addClass('position-top');
 
-		// Build Viewlet Actions in correct order
-		const allViewlets = (<ViewletRegistry>Registry.as(ViewletExtensions.Viewlets)).getViewlets();
-		const viewletActions = allViewlets.sort((v1, v2) => v1.order - v2.order).map(viewlet => this.toAction(viewlet));
+		// Load stock viewlets
+		const allViewlets = (<ViewletRegistry>Registry.as(ViewletExtensions.Viewlets)).getViewlets().filter(v => !v.isExternal);
+		this.fillViewletSwitcher(allViewlets);
+	}
 
+	private refreshViewletSwitcher(): void {
+		this.viewletSwitcherBar.clear();
+
+		// Load stock viewlets + enabled external viewlets
+		const allEnabledViewlets = (<ViewletRegistry>Registry.as(ViewletExtensions.Viewlets)).getViewlets().filter(descriptor => {
+			if (!descriptor.isExternal) {
+				return true;
+			} else {
+				return this.viewletsToggleStatus[descriptor.id];
+			}
+		});
+		this.fillViewletSwitcher(allEnabledViewlets);
+	}
+
+	private fillViewletSwitcher(viewlets: ViewletDescriptor[]) {
+		// Build Viewlet Actions in correct order
+		const viewletActions = viewlets.sort((v1, v2) => v1.order - v2.order).map(v => this.toAction(v));
 		this.viewletSwitcherBar.push(viewletActions, { label: true, icon: true });
 	}
 
@@ -157,11 +173,6 @@ export class ActivitybarPart extends Part implements IActivityService {
 		this.activityActionItems[action.id] = new ActivityActionItem(action, composite.name, this.getKeybindingLabel(composite.id));
 		this.compositeIdToActions[composite.id] = action;
 
-		// Mark active viewlet as active
-		if (activeViewlet && activeViewlet.getId() === composite.id) {
-			action.activate();
-		}
-
 		return action;
 	};
 

src/vs/workbench/browser/viewlet.ts

@@ -154,7 +154,7 @@ export abstract class ViewerViewlet extends Viewlet {
  */
 export class ViewletDescriptor extends CompositeDescriptor<Viewlet> {
 
-	constructor(moduleId: string, ctorName: string, id: string, name: string, cssClass?: string, order?: number) {
+	constructor(moduleId: string, ctorName: string, id: string, name: string, cssClass?: string, order?: number, public isExternal: boolean = false) {
 		super(moduleId, ctorName, id, name, cssClass, order);
 	}
 }