Add option for always visible action buttons in side panels.

src/vs/base/browser/ui/splitview/panelview.css

@@ -54,6 +54,7 @@
 
 /* TODO: actions should be part of the panel, but they aren't yet */
 .monaco-panel-view .panel:hover > .panel-header.expanded > .actions,
+.monaco-panel-view .panel > .panel-header.actions-always-visible.expanded > .actions,
 .monaco-panel-view .panel > .panel-header.focused.expanded > .actions {
 	display: initial;
 }

src/vs/workbench/browser/parts/views/panelViewlet.ts

@@ -11,7 +11,7 @@ import { ColorIdentifier, contrastBorder } from 'vs/platform/theme/common/colorR
 import { attachStyler, IColorMapping, IThemable } from 'vs/platform/theme/common/styler';
 import { SIDE_BAR_DRAG_AND_DROP_BACKGROUND, SIDE_BAR_SECTION_HEADER_FOREGROUND, SIDE_BAR_SECTION_HEADER_BACKGROUND } from 'vs/workbench/common/theme';
 import { Dimension, Builder } from 'vs/base/browser/builder';
-import { append, $, trackFocus } from 'vs/base/browser/dom';
+import { append, $, trackFocus, toggleClass } from 'vs/base/browser/dom';
 import { IDisposable, combinedDisposable } from 'vs/base/common/lifecycle';
 import { firstIndex } from 'vs/base/common/arrays';
 import { IAction, IActionRunner } from 'vs/base/common/actions';
@@ -25,6 +25,7 @@ import { IContextMenuService } from 'vs/platform/contextview/browser/contextView
 import { ITelemetryService } from 'vs/platform/telemetry/common/telemetry';
 import { IThemeService } from 'vs/platform/theme/common/themeService';
 import { PanelView, IPanelViewOptions, IPanelOptions, Panel } from 'vs/base/browser/ui/splitview/panelview';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 
 export interface IPanelColors extends IColorMapping {
 	dropBackground?: ColorIdentifier;
@@ -54,15 +55,20 @@ export abstract class ViewletPanel extends Panel {
 	protected actionRunner: IActionRunner;
 	protected toolbar: ToolBar;
 
+	// callback for when user changed settings and we need to re-render this panel
+	private updateActionVisibilityPreferences: () => void = () => { };
+
 	constructor(
 		readonly title: string,
 		options: IViewletPanelOptions,
 		@IKeybindingService protected keybindingService: IKeybindingService,
-		@IContextMenuService protected contextMenuService: IContextMenuService
+		@IContextMenuService protected contextMenuService: IContextMenuService,
+		@IConfigurationService protected readonly configurationService: IConfigurationService
 	) {
 		super(options);
 
 		this.actionRunner = options.actionRunner;
+		this.configurationService.onDidChangeConfiguration(() => this.updateActionVisibilityPreferences());
 	}
 
 	render(container: HTMLElement): void {
@@ -76,6 +82,10 @@ export abstract class ViewletPanel extends Panel {
 	protected renderHeader(container: HTMLElement): void {
 		this.renderHeaderTitle(container);
 
+		// assign to the callback now when we have the panel's container HTMLelement in scope
+		this.updateActionVisibilityPreferences = () => toggleClass(container, 'actions-always-visible', this.shouldAlwaysShowActions());
+		this.updateActionVisibilityPreferences();
+
 		const actions = append(container, $('.actions'));
 		this.toolbar = new ToolBar(actions, this.contextMenuService, {
 			orientation: ActionsOrientation.HORIZONTAL,
@@ -102,6 +112,10 @@ export abstract class ViewletPanel extends Panel {
 		this.toolbar.context = this.getActionsContext();
 	}
 
+	private shouldAlwaysShowActions(): boolean {
+		return this.configurationService.getValue<boolean>('workbench.panel.alwaysShowActions');
+	}
+
 	getActions(): IAction[] {
 		return [];
 	}

src/vs/workbench/browser/parts/views/treeView.ts

@@ -27,6 +27,7 @@ import { IExtensionService } from 'vs/platform/extensions/common/extensions';
 import { IViewletViewOptions, IViewOptions, TreeViewsViewletPanel, FileIconThemableWorkbenchTree } from 'vs/workbench/browser/parts/views/viewsViewlet';
 import { ICommandService } from 'vs/platform/commands/common/commands';
 import { WorkbenchTree, IListService } from 'vs/platform/list/browser/listService';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 import { ResourceLabel } from 'vs/workbench/browser/labels';
 import URI from 'vs/base/common/uri';
 import { basename } from 'vs/base/common/paths';
@@ -52,9 +53,10 @@ export class TreeView extends TreeViewsViewletPanel {
 		@IThemeService private themeService: IWorkbenchThemeService,
 		@IContextKeyService private contextKeyService: IContextKeyService,
 		@IExtensionService private extensionService: IExtensionService,
-		@ICommandService private commandService: ICommandService
+		@ICommandService private commandService: ICommandService,
+		@IConfigurationService protected readonly configurationService: IConfigurationService
 	) {
-		super({ ...(options as IViewOptions), ariaHeaderLabel: options.name }, keybindingService, contextMenuService);
+		super({ ...(options as IViewOptions), ariaHeaderLabel: options.name }, keybindingService, contextMenuService, configurationService);
 		this.menus = this.instantiationService.createInstance(Menus, this.id);
 		this.menus.onDidChangeTitle(() => this.updateActions(), this, this.disposables);
 		themeService.onThemeChange(() => this.tree.refresh() /* soft refresh */, this, this.disposables);

src/vs/workbench/browser/parts/views/viewsViewlet.ts

@@ -27,6 +27,7 @@ import { IContextKeyService, IContextKeyChangeEvent } from 'vs/platform/contextk
 import { StandardMouseEvent } from 'vs/base/browser/mouseEvent';
 import { PanelViewlet, ViewletPanel } from 'vs/workbench/browser/parts/views/panelViewlet';
 import { IPanelOptions } from 'vs/base/browser/ui/splitview/panelview';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 import { WorkbenchTree, IListService } from 'vs/platform/list/browser/listService';
 import { IWorkbenchThemeService, IFileIconTheme } from 'vs/workbench/services/themes/common/workbenchThemeService';
 import { ITreeConfiguration, ITreeOptions } from 'vs/base/parts/tree/browser/tree';
@@ -48,9 +49,10 @@ export abstract class ViewsViewletPanel extends ViewletPanel {
 	constructor(
 		options: IViewOptions,
 		protected keybindingService: IKeybindingService,
-		protected contextMenuService: IContextMenuService
+		protected contextMenuService: IContextMenuService,
+		@IConfigurationService protected readonly configurationService: IConfigurationService
 	) {
-		super(options.name, options, keybindingService, contextMenuService);
+		super(options.name, options, keybindingService, contextMenuService, configurationService);
 
 		this.id = options.id;
 		this.name = options.name;
@@ -112,9 +114,10 @@ export abstract class TreeViewsViewletPanel extends ViewsViewletPanel {
 	constructor(
 		options: IViewOptions,
 		protected keybindingService: IKeybindingService,
-		protected contextMenuService: IContextMenuService
+		protected contextMenuService: IContextMenuService,
+		@IConfigurationService protected readonly configurationService: IConfigurationService
 	) {
-		super(options, keybindingService, contextMenuService);
+		super(options, keybindingService, contextMenuService, configurationService);
 
 		this.id = options.id;
 		this.name = options.name;

src/vs/workbench/electron-browser/main.contribution.ts

@@ -253,6 +253,11 @@ configurationRegistry.registerConfiguration({
 			'default': true,
 			'description': nls.localize('activityBarVisibility', "Controls the visibility of the activity bar in the workbench.")
 		},
+		'workbench.panel.alwaysShowActions': {
+			'type': 'boolean',
+			'default': false,
+			'description': nls.localize('panelActionVisibility', "Controls the visibility of side panel tree view actions. A panel's actions may either be always visible, or only visible when that panel is active.")
+		},
 		'workbench.fontAliasing': {
 			'type': 'string',
 			'enum': ['default', 'antialiased', 'none'],

src/vs/workbench/parts/debug/electron-browser/breakpointsView.ts

@@ -33,6 +33,7 @@ import { ViewsViewletPanel, IViewletViewOptions } from 'vs/workbench/browser/par
 import { IContextKeyService } from 'vs/platform/contextkey/common/contextkey';
 import { attachInputBoxStyler } from 'vs/platform/theme/common/styler';
 import { isCodeEditor } from 'vs/editor/browser/editorBrowser';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 
 const $ = dom.$;
 
@@ -54,9 +55,10 @@ export class BreakpointsView extends ViewsViewletPanel {
 		@IThemeService private themeService: IThemeService,
 		@IEditorService private editorService: IEditorService,
 		@IContextViewService private contextViewService: IContextViewService,
-		@IContextKeyService private contextKeyService: IContextKeyService
+		@IContextKeyService private contextKeyService: IContextKeyService,
+		@IConfigurationService protected readonly configurationService: IConfigurationService
 	) {
-		super(options, keybindingService, contextMenuService);
+		super(options, keybindingService, contextMenuService, configurationService);
 
 		this.minimumBodySize = this.maximumBodySize = this.getExpandedBodySize();
 		this.settings = options.viewletSettings;

src/vs/workbench/parts/debug/electron-browser/callStackView.ts

@@ -29,6 +29,7 @@ import { WorkbenchTree, IListService } from 'vs/platform/list/browser/listServic
 import { IContextKeyService } from 'vs/platform/contextkey/common/contextkey';
 import { IWorkbenchEditorService } from 'vs/workbench/services/editor/common/editorService';
 import FileResultsNavigation from 'vs/workbench/parts/files/browser/fileResultsNavigation';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 
 const $ = dom.$;
 
@@ -51,8 +52,9 @@ export class CallStackView extends TreeViewsViewletPanel {
 		@IThemeService private themeService: IThemeService,
 		@IListService private listService: IListService,
 		@IWorkbenchEditorService private editorService: IWorkbenchEditorService,
+		@IConfigurationService protected readonly configurationService: IConfigurationService,
 	) {
-		super({ ...(options as IViewOptions), ariaHeaderLabel: nls.localize('callstackSection', "Call Stack Section") }, keybindingService, contextMenuService);
+		super({ ...(options as IViewOptions), ariaHeaderLabel: nls.localize('callstackSection', "Call Stack Section") }, keybindingService, contextMenuService, configurationService);
 		this.settings = options.viewletSettings;
 
 		// Create scheduler to prevent unnecessary flashing of tree when reacting to changes

src/vs/workbench/parts/debug/electron-browser/variablesView.ts

@@ -29,6 +29,7 @@ import { ViewModel } from 'vs/workbench/parts/debug/common/debugViewModel';
 import { equalsIgnoreCase } from 'vs/base/common/strings';
 import { IMouseEvent } from 'vs/base/browser/mouseEvent';
 import { WorkbenchTree, IListService } from 'vs/platform/list/browser/listService';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 
 const $ = dom.$;
 
@@ -48,9 +49,10 @@ export class VariablesView extends TreeViewsViewletPanel {
 		@IInstantiationService private instantiationService: IInstantiationService,
 		@IListService private listService: IListService,
 		@IContextKeyService private contextKeyService: IContextKeyService,
-		@IThemeService private themeService: IThemeService
+		@IThemeService private themeService: IThemeService,
+		@IConfigurationService protected readonly configurationService: IConfigurationService,
 	) {
-		super({ ...(options as IViewOptions), ariaHeaderLabel: nls.localize('variablesSection', "Variables Section") }, keybindingService, contextMenuService);
+		super({ ...(options as IViewOptions), ariaHeaderLabel: nls.localize('variablesSection', "Variables Section") }, keybindingService, contextMenuService, configurationService);
 
 		this.settings = options.viewletSettings;
 		this.expandedElements = [];

src/vs/workbench/parts/debug/electron-browser/watchExpressionsView.ts

@@ -30,6 +30,7 @@ import { IMouseEvent, DragMouseEvent } from 'vs/base/browser/mouseEvent';
 import { DefaultDragAndDrop } from 'vs/base/parts/tree/browser/treeDefaults';
 import { IVariableTemplateData, renderVariable, renderRenameBox, renderExpressionValue, BaseDebugController, twistiePixels, renderViewTree } from 'vs/workbench/parts/debug/electron-browser/baseDebugView';
 import { WorkbenchTree, IListService } from 'vs/platform/list/browser/listService';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 
 const $ = dom.$;
 const MAX_VALUE_RENDER_LENGTH_IN_VIEWLET = 1024;
@@ -49,9 +50,10 @@ export class WatchExpressionsView extends TreeViewsViewletPanel {
 		@IContextKeyService private contextKeyService: IContextKeyService,
 		@IListService private listService: IListService,
 		@IInstantiationService private instantiationService: IInstantiationService,
-		@IThemeService private themeService: IThemeService
+		@IThemeService private themeService: IThemeService,
+		@IConfigurationService protected readonly configurationService: IConfigurationService,
 	) {
-		super({ ...(options as IViewOptions), ariaHeaderLabel: nls.localize('expressionsSection', "Expressions Section") }, keybindingService, contextMenuService);
+		super({ ...(options as IViewOptions), ariaHeaderLabel: nls.localize('expressionsSection', "Expressions Section") }, keybindingService, contextMenuService, configurationService);
 		this.settings = options.viewletSettings;
 
 		this.onWatchExpressionsUpdatedScheduler = new RunOnceScheduler(() => {

src/vs/workbench/parts/extensions/electron-browser/extensionsViews.ts

@@ -37,6 +37,7 @@ import { ActionBar } from 'vs/base/browser/ui/actionbar/actionbar';
 import { InstallWorkspaceRecommendedExtensionsAction, ConfigureWorkspaceFolderRecommendedExtensionsAction } from 'vs/workbench/parts/extensions/browser/extensionsActions';
 import { WorkbenchPagedList, IListService } from 'vs/platform/list/browser/listService';
 import { IContextKeyService } from 'vs/platform/contextkey/common/contextkey';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 
 export class ExtensionsListView extends ViewsViewletPanel {
 
@@ -61,9 +62,10 @@ export class ExtensionsListView extends ViewsViewletPanel {
 		@IExtensionTipsService private tipsService: IExtensionTipsService,
 		@IModeService private modeService: IModeService,
 		@ITelemetryService private telemetryService: ITelemetryService,
-		@IContextKeyService private contextKeyService: IContextKeyService
+		@IContextKeyService private contextKeyService: IContextKeyService,
+		@IConfigurationService protected readonly configurationService: IConfigurationService,
 	) {
-		super({ ...(options as IViewOptions), ariaHeaderLabel: options.name }, keybindingService, contextMenuService);
+		super({ ...(options as IViewOptions), ariaHeaderLabel: options.name }, keybindingService, contextMenuService, configurationService);
 	}
 
 	renderHeader(container: HTMLElement): void {

src/vs/workbench/parts/files/electron-browser/views/emptyView.ts

@@ -21,6 +21,7 @@ import { IThemeService } from 'vs/platform/theme/common/themeService';
 import { IKeybindingService } from 'vs/platform/keybinding/common/keybinding';
 import { IContextMenuService } from 'vs/platform/contextview/browser/contextView';
 import { IWorkspaceContextService, WorkbenchState } from 'vs/platform/workspace/common/workspace';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
 
 export class EmptyView extends ViewsViewletPanel {
 
@@ -37,9 +38,10 @@ export class EmptyView extends ViewsViewletPanel {
 		@IInstantiationService private instantiationService: IInstantiationService,
 		@IKeybindingService keybindingService: IKeybindingService,
 		@IContextMenuService contextMenuService: IContextMenuService,
-		@IWorkspaceContextService private contextService: IWorkspaceContextService
+		@IWorkspaceContextService private contextService: IWorkspaceContextService,
+		@IConfigurationService protected configurationService: IConfigurationService
 	) {
-		super({ ...(options as IViewOptions), ariaHeaderLabel: nls.localize('explorerSection', "Files Explorer Section") }, keybindingService, contextMenuService);
+		super({ ...(options as IViewOptions), ariaHeaderLabel: nls.localize('explorerSection', "Files Explorer Section") }, keybindingService, contextMenuService, configurationService);
 		this.contextService.onDidChangeWorkbenchState(() => this.setLabels());
 	}
 

src/vs/workbench/parts/files/electron-browser/views/explorerView.ts

@@ -90,11 +90,11 @@ export class ExplorerView extends TreeViewsViewletPanel implements IExplorerView
 		@IPartService private partService: IPartService,
 		@IKeybindingService keybindingService: IKeybindingService,
 		@IContextKeyService private contextKeyService: IContextKeyService,
-		@IConfigurationService private configurationService: IConfigurationService,
+		@IConfigurationService protected configurationService: IConfigurationService,
 		@IWorkbenchThemeService private themeService: IWorkbenchThemeService,
 		@IDecorationsService decorationService: IDecorationsService
 	) {
-		super({ ...(options as IViewOptions), ariaHeaderLabel: nls.localize('explorerSection', "Files Explorer Section") }, keybindingService, contextMenuService);
+		super({ ...(options as IViewOptions), ariaHeaderLabel: nls.localize('explorerSection', "Files Explorer Section") }, keybindingService, contextMenuService, configurationService);
 
 		this.settings = options.viewletSettings;
 		this.viewletState = options.viewletState;

src/vs/workbench/parts/files/electron-browser/views/openEditorsView.ts

@@ -72,7 +72,7 @@ export class OpenEditorsView extends ViewsViewletPanel {
 		@ITextFileService private textFileService: ITextFileService,
 		@IWorkbenchEditorService private editorService: IWorkbenchEditorService,
 		@IEditorGroupService private editorGroupService: IEditorGroupService,
-		@IConfigurationService private configurationService: IConfigurationService,
+		@IConfigurationService protected configurationService: IConfigurationService,
 		@IKeybindingService keybindingService: IKeybindingService,
 		@IListService private listService: IListService,
 		@IUntitledEditorService private untitledEditorService: IUntitledEditorService,
@@ -84,7 +84,7 @@ export class OpenEditorsView extends ViewsViewletPanel {
 		super({
 			...(options as IViewOptions),
 			ariaHeaderLabel: nls.localize({ key: 'openEditosrSection', comment: ['Open is an adjective'] }, "Open Editors Section"),
-		}, keybindingService, contextMenuService);
+		}, keybindingService, contextMenuService, configurationService);
 
 		this.model = editorGroupService.getStacksModel();
 

src/vs/workbench/parts/scm/electron-browser/scmViewlet.ts

@@ -229,9 +229,10 @@ class MainPanel extends ViewletPanel {
 		@IThemeService private themeService: IThemeService,
 		@IContextKeyService private contextKeyService: IContextKeyService,
 		@IListService private listService: IListService,
-		@IMenuService private menuService: IMenuService
+		@IMenuService private menuService: IMenuService,
+		@IConfigurationService protected readonly configurationService: IConfigurationService
 	) {
-		super(localize('scm providers', "Source Control Providers"), {}, keybindingService, contextMenuService);
+		super(localize('scm providers', "Source Control Providers"), {}, keybindingService, contextMenuService, configurationService);
 		this.updateBodySize();
 	}
 
@@ -699,7 +700,7 @@ export class RepositoryPanel extends ViewletPanel {
 		@IInstantiationService protected instantiationService: IInstantiationService,
 		@IConfigurationService protected configurationService: IConfigurationService
 	) {
-		super(repository.provider.label, {}, keybindingService, contextMenuService);
+		super(repository.provider.label, {}, keybindingService, contextMenuService, configurationService);
 		this.menus = instantiationService.createInstance(SCMMenus, repository.provider);
 	}