added a first version of a simple UserStatusPanel. The displayed logout button won't work as long as we use basic authentication.

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/adminconsole/AdminConsoleEntryPoint.java

@@ -18,6 +18,7 @@ import com.sap.sailing.gwt.ui.leaderboard.LeaderboardPanel;
 import com.sap.sailing.gwt.ui.leaderboard.LeaderboardSettings;
 import com.sap.sailing.gwt.ui.leaderboard.LeaderboardSettingsFactory;
 import com.sap.sailing.gwt.ui.shared.EventDTO;
+import com.sap.sailing.gwt.ui.shared.panels.UserStatusPanel;
 
 public class AdminConsoleEntryPoint extends AbstractEntryPoint implements EventRefresher {
     private Set<EventDisplayer> eventDisplayers;
@@ -26,11 +27,12 @@ public class AdminConsoleEntryPoint extends AbstractEntryPoint implements EventR
     public void onModuleLoad() {
         super.onModuleLoad();
         RootPanel rootPanel = RootPanel.get();
-        rootPanel.setSize("95%", "95%");
+        rootPanel.setSize("100%", "100%");
         
+        rootPanel.add(new UserStatusPanel(userManagementService, this));
         TabPanel tabPanel = new TabPanel();
         tabPanel.setAnimationEnabled(true);
-        rootPanel.add(tabPanel, 10, 10);
+        rootPanel.add(tabPanel); //, 10, 10);
         tabPanel.setSize("95%", "95%");
         
         eventDisplayers = new HashSet<EventDisplayer>();

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/client/UserManagementService.java

@@ -8,6 +8,8 @@ import com.sap.sailing.gwt.ui.shared.UserDTO;
 public interface UserManagementService extends RemoteService {
 
     public boolean isUserInRole(String userRole);
-    
+
+    public void logoutUser();
+
     public UserDTO getUser();
 }

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/client/UserManagementServiceAsync.java

@@ -9,4 +9,6 @@ public interface UserManagementServiceAsync {
 
     void getUser(AsyncCallback<UserDTO> callback);
 
+    void logoutUser(AsyncCallback<Void> callback);
+
 }

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/server/UserManagementServiceImpl.java

@@ -5,6 +5,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
 
 import com.google.gwt.user.server.rpc.RemoteServiceServlet;
 import com.sap.sailing.gwt.ui.client.UserManagementService;
@@ -23,6 +24,15 @@ public class UserManagementServiceImpl  extends RemoteServiceServlet implements
         return getThreadLocalRequest().isUserInRole(userRole);
     }
 
+    @Override
+    public void logoutUser() {
+        HttpSession session = getThreadLocalRequest().getSession();
+        if(session != null) {
+            session.invalidate();
+            session = null;
+        }
+    }
+
     @Override
     public UserDTO getUser() {
         HttpServletRequest threadLocalRequest = getThreadLocalRequest();

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/shared/panels/UserStatusPanel.java

@@ -0,0 +1,95 @@
+package com.sap.sailing.gwt.ui.shared.panels;
+
+import com.google.gwt.dom.client.Style;
+import com.google.gwt.event.dom.client.ClickEvent;
+import com.google.gwt.event.dom.client.ClickHandler;
+import com.google.gwt.user.client.rpc.AsyncCallback;
+import com.google.gwt.user.client.ui.Button;
+import com.google.gwt.user.client.ui.FlowPanel;
+import com.google.gwt.user.client.ui.Label;
+import com.google.gwt.user.client.ui.Widget;
+import com.sap.sailing.gwt.ui.client.ErrorReporter;
+import com.sap.sailing.gwt.ui.client.UserManagementServiceAsync;
+import com.sap.sailing.gwt.ui.shared.UserDTO;
+
+public class UserStatusPanel extends FlowPanel {
+
+    private UserDTO user;
+
+    private final Label userNameLabel;
+
+    private final Label userNameText;
+
+    private final Label userRolesText;
+
+    private final Button logoutButton;
+
+    public UserStatusPanel(final UserManagementServiceAsync userManagementService, final ErrorReporter errorReporter) {
+        super();
+        
+        userNameLabel = new Label("User:");
+        userNameText = new Label("");
+        userRolesText = new Label("");
+        user = null;
+
+        logoutButton = new Button("Logout");
+        
+        userManagementService.getUser(new AsyncCallback<UserDTO>() {
+            @Override
+            public void onFailure(Throwable caught) {
+                errorReporter.reportError("Could not read user: " + caught.getMessage());
+            }
+
+            @Override
+            public void onSuccess(UserDTO result) {
+                updateUser(result);
+            }
+        });
+        
+        logoutButton.addClickHandler(new ClickHandler() {
+            @Override
+            public void onClick(ClickEvent click) {
+                userManagementService.logoutUser(
+                        new AsyncCallback<Void>() {
+                    @Override
+                    public void onFailure(Throwable caught) {
+                        errorReporter.reportError("Error during logout of the user: " + caught.getMessage());
+                    }
+
+                    @Override
+                    public void onSuccess(Void result) {
+                        errorReporter.reportError("Basic authentication does not support a server side 'Logout'. Please close the browser to logout.");
+//                        Window.Location.reload();
+                    }
+                });
+            }
+        });
+        
+        addFloatingWidget(userNameLabel);
+        addFloatingWidget(userNameText);
+        addFloatingWidget(userRolesText);
+        add(logoutButton);
+        
+        updateUser(user);
+    }
+
+    private void addFloatingWidget(Widget w) { 
+        w.getElement().getStyle().setFloat(Style.Float.LEFT);
+        w.getElement().getStyle().setPadding(3, Style.Unit.PX);
+        add(w);
+    }
+    
+    private void updateUser(UserDTO newUser) {
+        this.user = newUser;
+        
+        if(user != null) {
+            userNameText.setText(user.principalName);
+            userRolesText.setText(user.roles.toString());
+            logoutButton.setEnabled(true);
+        } else {
+            userNameText.setText("Unknown");
+            userRolesText.setText("Unknown");
+            logoutButton.setEnabled(false);
+        }
+    }
+}