feat. add a menu item 'Expand All' to expand subtree

src/vs/workbench/contrib/search/browser/searchActionsFind.ts

@@ -77,6 +77,31 @@ registerAction2(class RestrictSearchToFolderAction extends Action2 {
 	}
 });
 
+
+registerAction2(class ExpandSelectedTreeCommandAction extends Action2 {
+	constructor(
+	) {
+		super({
+			id: Constants.SearchCommandIds.ExpandSelectedTreeCommandId,
+			title: nls.localize('search.expandAll', "Expand All"),
+			category,
+			menu: [{
+				id: MenuId.SearchContext,
+				when: ContextKeyExpr.and(
+					ContextKeyExpr.or(Constants.SearchContext.FileFocusKey, Constants.SearchContext.FolderFocusKey),
+					Constants.SearchContext.HasSearchResults
+				),
+				group: 'search',
+				order: 4
+			}]
+		});
+	}
+
+	override async run(accessor: any): Promise<any> {
+		await expandSelectSubtree(accessor);
+	}
+});
+
 registerAction2(class ExcludeFolderFromSearchAction extends Action2 {
 	constructor() {
 		super({
@@ -270,6 +295,16 @@ registerAction2(class FindInWorkspaceAction extends Action2 {
 });
 
 //#region Helpers
+function expandSelectSubtree(accessor: ServicesAccessor) {
+	const viewsService = accessor.get(IViewsService);
+	const searchView = getSearchView(viewsService);
+	if (searchView) {
+		const viewer = searchView.getControl();
+		const selected = viewer.getFocus()[0];
+		viewer.expand(selected, true);
+	}
+}
+
 async function searchWithFolderCommand(accessor: ServicesAccessor, isFromExplorer: boolean, isIncludes: boolean, resource?: URI, folderMatch?: FolderMatchWithResource) {
 	const listService = accessor.get(IListService);
 	const fileService = accessor.get(IFileService);

src/vs/workbench/contrib/search/common/constants.ts

@@ -38,6 +38,7 @@ export const enum SearchCommandIds {
 	ToggleSearchOnTypeActionId = 'workbench.action.toggleSearchOnType',
 	CollapseSearchResultsActionId = 'search.action.collapseSearchResults',
 	ExpandSearchResultsActionId = 'search.action.expandSearchResults',
+	ExpandSelectedTreeCommandId = 'search.action.expandSelected',
 	ClearSearchResultsActionId = 'search.action.clearSearchResults',
 	ViewAsTreeActionId = 'search.action.viewAsTree',
 	ViewAsListActionId = 'search.action.viewAsList',