context key - a bit of bufferChangeEvents when changing many context keys at once

src/vs/platform/contextkey/common/contextkey.ts

@@ -998,7 +998,6 @@ export interface IContextKeyService {
 	onDidChangeContext: Event<IContextKeyChangeEvent>;
 	bufferChangeEvents(callback: Function): void;
 
-
 	createKey<T>(key: string, defaultValue: T | undefined): IContextKey<T>;
 	contextMatchesRules(rules: ContextKeyExpression | undefined): boolean;
 	getContextKeyValue<T>(key: string): T | undefined;

src/vs/platform/list/browser/listService.ts

@@ -255,9 +255,11 @@ export class WorkbenchList<T> extends List<T> {
 			const selection = this.getSelection();
 			const focus = this.getFocus();
 
-			this.listHasSelectionOrFocus.set(selection.length > 0 || focus.length > 0);
-			this.listMultiSelection.set(selection.length > 1);
-			this.listDoubleSelection.set(selection.length === 2);
+			this.contextKeyService.bufferChangeEvents(() => {
+				this.listHasSelectionOrFocus.set(selection.length > 0 || focus.length > 0);
+				this.listMultiSelection.set(selection.length > 1);
+				this.listDoubleSelection.set(selection.length === 2);
+			});
 		}));
 		this.disposables.add(this.onDidChangeFocus(() => {
 			const selection = this.getSelection();
@@ -906,9 +908,11 @@ class WorkbenchTreeInternals<TInput, T, TFilterData> {
 				const selection = tree.getSelection();
 				const focus = tree.getFocus();
 
-				this.hasSelectionOrFocus.set(selection.length > 0 || focus.length > 0);
-				this.hasMultiSelection.set(selection.length > 1);
-				this.hasDoubleSelection.set(selection.length === 2);
+				this.contextKeyService.bufferChangeEvents(() => {
+					this.hasSelectionOrFocus.set(selection.length > 0 || focus.length > 0);
+					this.hasMultiSelection.set(selection.length > 1);
+					this.hasDoubleSelection.set(selection.length === 2);
+				});
 			}),
 			tree.onDidChangeFocus(() => {
 				const selection = tree.getSelection();

src/vs/workbench/browser/parts/editor/titleControl.ts

@@ -223,9 +223,11 @@ export abstract class TitleControl extends Themable {
 		this.editorToolBarMenuDisposables.clear();
 
 		// Update contexts
-		this.resourceContext.set(this.group.activeEditor ? withUndefinedAsNull(toResource(this.group.activeEditor, { supportSideBySide: SideBySideEditor.PRIMARY })) : null);
-		this.editorPinnedContext.set(this.group.activeEditor ? this.group.isPinned(this.group.activeEditor) : false);
-		this.editorStickyContext.set(this.group.activeEditor ? this.group.isSticky(this.group.activeEditor) : false);
+		this.contextKeyService.bufferChangeEvents(() => {
+			this.resourceContext.set(this.group.activeEditor ? withUndefinedAsNull(toResource(this.group.activeEditor, { supportSideBySide: SideBySideEditor.PRIMARY })) : null);
+			this.editorPinnedContext.set(this.group.activeEditor ? this.group.isPinned(this.group.activeEditor) : false);
+			this.editorStickyContext.set(this.group.activeEditor ? this.group.isSticky(this.group.activeEditor) : false);
+		});
 
 		// Editor actions require the editor control to be there, so we retrieve it via service
 		const activeEditorPane = this.group.activeEditorPane;

src/vs/workbench/common/resources.ts

@@ -39,19 +39,19 @@ export class ResourceContextKey extends Disposable implements IContextKey<URI> {
 	private readonly _isFileSystemResource: IContextKey<boolean>;
 
 	constructor(
-		@IContextKeyService contextKeyService: IContextKeyService,
+		@IContextKeyService private readonly _contextKeyService: IContextKeyService,
 		@IFileService private readonly _fileService: IFileService,
 		@IModeService private readonly _modeService: IModeService
 	) {
 		super();
 
-		this._schemeKey = ResourceContextKey.Scheme.bindTo(contextKeyService);
-		this._filenameKey = ResourceContextKey.Filename.bindTo(contextKeyService);
-		this._langIdKey = ResourceContextKey.LangId.bindTo(contextKeyService);
-		this._resourceKey = ResourceContextKey.Resource.bindTo(contextKeyService);
-		this._extensionKey = ResourceContextKey.Extension.bindTo(contextKeyService);
-		this._hasResource = ResourceContextKey.HasResource.bindTo(contextKeyService);
-		this._isFileSystemResource = ResourceContextKey.IsFileSystemResource.bindTo(contextKeyService);
+		this._schemeKey = ResourceContextKey.Scheme.bindTo(this._contextKeyService);
+		this._filenameKey = ResourceContextKey.Filename.bindTo(this._contextKeyService);
+		this._langIdKey = ResourceContextKey.LangId.bindTo(this._contextKeyService);
+		this._resourceKey = ResourceContextKey.Resource.bindTo(this._contextKeyService);
+		this._extensionKey = ResourceContextKey.Extension.bindTo(this._contextKeyService);
+		this._hasResource = ResourceContextKey.HasResource.bindTo(this._contextKeyService);
+		this._isFileSystemResource = ResourceContextKey.IsFileSystemResource.bindTo(this._contextKeyService);
 
 		this._register(_fileService.onDidChangeFileSystemProviderRegistrations(() => {
 			const resource = this._resourceKey.get();
@@ -66,24 +66,28 @@ export class ResourceContextKey extends Disposable implements IContextKey<URI> {
 
 	set(value: URI | null) {
 		if (!ResourceContextKey._uriEquals(this._resourceKey.get(), value)) {
-			this._resourceKey.set(value);
-			this._schemeKey.set(value ? value.scheme : null);
-			this._filenameKey.set(value ? basename(value) : null);
-			this._langIdKey.set(value ? this._modeService.getModeIdByFilepathOrFirstLine(value) : null);
-			this._extensionKey.set(value ? extname(value) : null);
-			this._hasResource.set(!!value);
-			this._isFileSystemResource.set(value ? this._fileService.canHandleResource(value) : false);
+			this._contextKeyService.bufferChangeEvents(() => {
+				this._resourceKey.set(value);
+				this._schemeKey.set(value ? value.scheme : null);
+				this._filenameKey.set(value ? basename(value) : null);
+				this._langIdKey.set(value ? this._modeService.getModeIdByFilepathOrFirstLine(value) : null);
+				this._extensionKey.set(value ? extname(value) : null);
+				this._hasResource.set(!!value);
+				this._isFileSystemResource.set(value ? this._fileService.canHandleResource(value) : false);
+			});
 		}
 	}
 
 	reset(): void {
-		this._schemeKey.reset();
-		this._langIdKey.reset();
-		this._resourceKey.reset();
-		this._langIdKey.reset();
-		this._extensionKey.reset();
-		this._hasResource.reset();
-		this._isFileSystemResource.reset();
+		this._contextKeyService.bufferChangeEvents(() => {
+			this._schemeKey.reset();
+			this._langIdKey.reset();
+			this._resourceKey.reset();
+			this._langIdKey.reset();
+			this._extensionKey.reset();
+			this._hasResource.reset();
+			this._isFileSystemResource.reset();
+		});
 	}
 
 	get(): URI | undefined {

src/vs/workbench/services/history/browser/history.ts

@@ -755,10 +755,12 @@ export class HistoryService extends Disposable implements IHistoryService {
 	private readonly canReopenClosedEditorContextKey = (new RawContextKey<boolean>('canReopenClosedEditor', false)).bindTo(this.contextKeyService);
 
 	private updateContextKeys(): void {
-		this.canNavigateBackContextKey.set(this.navigationStack.length > 0 && this.navigationStackIndex > 0);
-		this.canNavigateForwardContextKey.set(this.navigationStack.length > 0 && this.navigationStackIndex < this.navigationStack.length - 1);
-		this.canNavigateToLastEditLocationContextKey.set(!!this.lastEditLocation);
-		this.canReopenClosedEditorContextKey.set(this.recentlyClosedEditors.length > 0);
+		this.contextKeyService.bufferChangeEvents(() => {
+			this.canNavigateBackContextKey.set(this.navigationStack.length > 0 && this.navigationStackIndex > 0);
+			this.canNavigateForwardContextKey.set(this.navigationStack.length > 0 && this.navigationStackIndex < this.navigationStack.length - 1);
+			this.canNavigateToLastEditLocationContextKey.set(!!this.lastEditLocation);
+			this.canReopenClosedEditorContextKey.set(this.recentlyClosedEditors.length > 0);
+		});
 	}
 
 	//#endregion