Missing command to set focus to "currently open project" in side bar (fixes #4009)

src/vs/workbench/parts/files/browser/fileActions.contribution.ts

@@ -10,7 +10,7 @@ import {Action, IAction} from 'vs/base/common/actions';
 import {ActionItem, BaseActionItem, Separator} from 'vs/base/browser/ui/actionbar/actionbar';
 import {Scope, IActionBarRegistry, Extensions as ActionBarExtensions, ActionBarContributor} from 'vs/workbench/browser/actionBarRegistry';
 import {IEditorInputActionContext, IEditorInputAction, EditorInputActionContributor} from 'vs/workbench/browser/parts/editor/baseEditor';
-import {AddToWorkingFiles, FocusWorkingFiles, OpenPreviousWorkingFile, OpenNextWorkingFile, CloseAllFilesAction, CloseFileAction, CloseOtherFilesAction, GlobalCompareResourcesAction, GlobalNewFolderAction, RevertFileAction, SaveFilesAction, SaveAllAction, SaveFileAction, keybindingForAction, MoveFileToTrashAction, TriggerRenameFileAction, PasteFileAction, CopyFileAction, SelectResourceForCompareAction, CompareResourcesAction, NewFolderAction, NewFileAction, OpenToSideAction} from 'vs/workbench/parts/files/browser/fileActions';
+import {AddToWorkingFiles, FocusWorkingFiles, FocusFilesExplorer, OpenPreviousWorkingFile, OpenNextWorkingFile, CloseAllFilesAction, CloseFileAction, CloseOtherFilesAction, GlobalCompareResourcesAction, GlobalNewFolderAction, RevertFileAction, SaveFilesAction, SaveAllAction, SaveFileAction, keybindingForAction, MoveFileToTrashAction, TriggerRenameFileAction, PasteFileAction, CopyFileAction, SelectResourceForCompareAction, CompareResourcesAction, NewFolderAction, NewFileAction, OpenToSideAction} from 'vs/workbench/parts/files/browser/fileActions';
 import {RevertLocalChangesAction, AcceptLocalChangesAction, ConflictResolutionDiffEditorInput} from 'vs/workbench/parts/files/browser/saveErrorHandler';
 import {SyncActionDescriptor} from 'vs/platform/actions/common/actions';
 import {IWorkbenchActionRegistry, Extensions as ActionExtensions} from 'vs/workbench/common/actionRegistry';
@@ -174,4 +174,5 @@ registry.registerWorkbenchAction(new SyncActionDescriptor(CloseAllFilesAction, C
 registry.registerWorkbenchAction(new SyncActionDescriptor(OpenNextWorkingFile, OpenNextWorkingFile.ID, OpenNextWorkingFile.LABEL, { primary: KeyMod.chord(KeyMod.CtrlCmd | KeyCode.KEY_K, KeyCode.DownArrow) }), category);
 registry.registerWorkbenchAction(new SyncActionDescriptor(OpenPreviousWorkingFile, OpenPreviousWorkingFile.ID, OpenPreviousWorkingFile.LABEL, { primary: KeyMod.chord(KeyMod.CtrlCmd | KeyCode.KEY_K, KeyCode.UpArrow) }), category);
 registry.registerWorkbenchAction(new SyncActionDescriptor(AddToWorkingFiles, AddToWorkingFiles.ID, AddToWorkingFiles.LABEL, { primary: KeyMod.chord(KeyMod.CtrlCmd | KeyCode.KEY_K, KeyCode.Enter) }), category);
-registry.registerWorkbenchAction(new SyncActionDescriptor(FocusWorkingFiles, FocusWorkingFiles.ID, FocusWorkingFiles.LABEL, { primary: KeyMod.chord(KeyMod.CtrlCmd | KeyCode.KEY_K, KeyCode.KEY_E) }), category);
\ No newline at end of file
+registry.registerWorkbenchAction(new SyncActionDescriptor(FocusWorkingFiles, FocusWorkingFiles.ID, FocusWorkingFiles.LABEL, { primary: KeyMod.chord(KeyMod.CtrlCmd | KeyCode.KEY_K, KeyCode.KEY_E) }), category);
+registry.registerWorkbenchAction(new SyncActionDescriptor(FocusFilesExplorer, FocusFilesExplorer.ID, FocusFilesExplorer.LABEL), category);
\ No newline at end of file

src/vs/workbench/parts/files/browser/fileActions.ts

@@ -2290,6 +2290,30 @@ export class FocusWorkingFiles extends Action {
 	}
 }
 
+export class FocusFilesExplorer extends Action {
+
+	public static ID = 'workbench.files.action.focusFilesExplorer';
+	public static LABEL = nls.localize('focusFilesExplorer', "Focus on Files Explorer");
+
+	constructor(
+		id: string,
+		label: string,
+		@IViewletService private viewletService: IViewletService
+	) {
+		super(id, label);
+	}
+
+	public run(): TPromise<any> {
+		return this.viewletService.openViewlet(Files.VIEWLET_ID, true).then((viewlet: ExplorerViewlet) => {
+			const view = viewlet.getExplorerView();
+			if (view) {
+				view.expand();
+				view.getViewer().DOMFocus();
+			}
+		});
+	}
+}
+
 export function keybindingForAction(id: string): Keybinding {
 	switch (id) {
 		case GlobalNewFileAction.ID: