Refactoring Navigation

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/dao/ClubEventDaoImpl.java

@@ -37,6 +37,7 @@ public class ClubEventDaoImpl extends AbstractDaoImpl<ClubEvent> implements Club
 	}
 
 	@Override
+	@Transactional
 	public void addPersons(ClubEvent event, Collection<Person> updated) {
 		List<Person> added = new ArrayList<>(updated);
 		List<Person> removed = new ArrayList<>();

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/MainUi.java

@@ -7,8 +7,9 @@ import org.springframework.beans.factory.annotation.Autowired;
 import com.vaadin.annotations.PreserveOnRefresh;
 import com.vaadin.annotations.Push;
 import com.vaadin.annotations.Theme;
-import com.vaadin.navigator.Navigator;
+import com.vaadin.server.Page;
 import com.vaadin.server.VaadinRequest;
+import com.vaadin.server.WebBrowser;
 import com.vaadin.shared.communication.PushMode;
 import com.vaadin.spring.annotation.SpringUI;
 import com.vaadin.ui.UI;
@@ -19,7 +20,8 @@ import de.kreth.vaadin.clubhelper.vaadinclubhelper.dao.GroupDao;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.dao.PersonDao;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.dao.PflichtenDao;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.security.SecurityVerifier;
-import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components.EventDetails;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.navigation.ClubhelperNavigation;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.navigation.ClubhelperViews;
 
 @Theme("vaadin-clubhelpertheme")
 @SpringUI
@@ -48,22 +50,24 @@ public class MainUi extends UI {
 	@Autowired
 	CalendarAdapter calendarAdapter;
 
+	@Autowired
+	ClubhelperNavigation clubhelperNavigation;
+
 	@Override
 	protected void init(VaadinRequest request) {
 
-		LOGGER.debug("Starting Vaadin UI with {}", getClass().getName());
+		Page page = getPage();
+		int browserWidth = page.getBrowserWindowWidth();
+		WebBrowser webBrowser = page.getWebBrowser();
 
-		getPage().setTitle("Vereinshelfer");
+		LOGGER.debug("Starting Vaadin UI with {}, windowWidth={}, touchDevice={}, Android={}, IPad={}, IPhone={}",
+				getClass().getName(), browserWidth, webBrowser.isTouchDevice(), webBrowser.isAndroid(),
+				webBrowser.isIPad(), webBrowser.isIPhone());
 
-		Navigator navigator = new Navigator(this, this);
+		page.setTitle("Vereinshelfer");
 
-		// Create and register the views
+		clubhelperNavigation.configure(this);
-		navigator.addView(MainView.VIEW_NAME, new MainView(personDao, groupDao, eventBusiness, securityGroupVerifier));
+		clubhelperNavigation.navigateTo(ClubhelperViews.MainView.name());
-		navigator.addView(LoginUI.VIEW_NAME, new LoginUI(personDao, securityGroupVerifier));
-		navigator.addView(PersonEditView.VIEW_NAME, new PersonEditView(groupDao, personDao));
-		navigator.addView(EventDetails.VIEW_NAME,
-				new EventDetails(personDao, groupDao, eventBusiness, pflichtenDao, calendarAdapter));
-		navigator.navigateTo(MainView.VIEW_NAME);
 	}
 
 }

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/NamedView.java

@@ -1,12 +0,0 @@
-package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui;
-
-import com.vaadin.navigator.View;
-
-public interface NamedView extends View {
-	/**
-	 * Navigation view name used for this view.
-	 * 
-	 * @return view name.
-	 */
-	String getViewName();
-}

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/components/EventDetails.java

@@ -1,6 +1,6 @@
 package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components;
 
-import com.vaadin.navigator.Navigator;
+import com.vaadin.navigator.View;
 import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
 import com.vaadin.shared.ui.ContentMode;
 import com.vaadin.ui.Button;
@@ -18,11 +18,10 @@ import de.kreth.vaadin.clubhelper.vaadinclubhelper.dao.GroupDao;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.dao.PersonDao;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.dao.PflichtenDao;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.data.ClubEvent;
-import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.NamedView;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.navigation.ClubhelperNavigation.ClubNavigator;
 
-public class EventDetails extends GridLayout implements NamedView {
+public class EventDetails extends GridLayout implements View {
 
-	public static final String VIEW_NAME = "EventDetails";
 	private static final long serialVersionUID = 8290150079638390995L;
 
 	private final EventBusiness eventBusiness;
@@ -52,12 +51,12 @@ public class EventDetails extends GridLayout implements NamedView {
 		currentEvent = eventBusiness.getCurrent();
 		if (eventView == null) {
 
-			Navigator navigator = event.getNavigator();
+			ClubNavigator navigator = (ClubNavigator) event.getNavigator();
 
 			eventView = new SingleEventView(true);
 			eventView.setCalendarAdapter(calendarAdapter);
 			eventView.setEventBusiness(eventBusiness);
-			eventView.setDeletedHandler(() -> navigator.navigateTo(((NamedView) event.getOldView()).getViewName()));
+			eventView.setDeletedHandler(() -> navigator.back());
 
 			eventView.addDataUpdatedListener(() -> eventBusiness.storeEventType());
 
@@ -69,7 +68,7 @@ public class EventDetails extends GridLayout implements NamedView {
 			personGrid.setSelectionMode(SelectionMode.NONE);
 
 			Button back = new Button("Zurück");
-			back.addClickListener(ev -> navigator.navigateTo(((NamedView) event.getOldView()).getViewName()));
+			back.addClickListener(ev -> navigator.back());
 			Button createMeldung = new Button("Meldung");
 			createMeldung.addClickListener(ev -> show(eventBusiness.createMeldung()));
 
@@ -100,9 +99,4 @@ public class EventDetails extends GridLayout implements NamedView {
 
 	}
 
-	@Override
-	public String getViewName() {
-		return VIEW_NAME;
-	}
-
 }

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/navigation/ClubhelperNavigation.java

@@ -0,0 +1,114 @@
+package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.navigation;
+
+import java.util.Stack;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import com.vaadin.navigator.Navigator;
+import com.vaadin.ui.Notification;
+import com.vaadin.ui.UI;
+
+import de.kreth.googleconnectors.calendar.CalendarAdapter;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.business.EventBusiness;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.dao.GroupDao;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.dao.PersonDao;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.dao.PflichtenDao;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.security.SecurityVerifier;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components.EventDetails;
+
+@Component
+public class ClubhelperNavigation {
+
+	private static final Logger LOGGER = LoggerFactory.getLogger(ClubhelperNavigation.class);
+
+	@Autowired
+	PersonDao personDao;
+
+	@Autowired
+	GroupDao groupDao;
+
+	@Autowired
+	EventBusiness eventBusiness;
+
+	@Autowired
+	PflichtenDao pflichtenDao;
+
+	@Autowired
+	SecurityVerifier securityGroupVerifier;
+
+	@Autowired
+	CalendarAdapter calendarAdapter;
+
+	private ClubNavigator navi;
+
+	public void configure(UI mainUI) {
+
+		navi = new ClubNavigator().init(mainUI);
+
+		// Create and register the views
+		MainView mainView = new MainView(personDao, groupDao, eventBusiness, securityGroupVerifier);
+		navi.addView("", mainView);
+		navi.addView(ClubhelperViews.MainView.name(), mainView);
+		navi.addView(ClubhelperViews.LoginUI.name(), new LoginUI(personDao, securityGroupVerifier));
+		navi.addView(ClubhelperViews.PersonEditView.name(), new PersonEditView(groupDao, personDao));
+		navi.addView(ClubhelperViews.EventDetails.name(),
+				new EventDetails(personDao, groupDao, eventBusiness, pflichtenDao, calendarAdapter));
+
+		mainUI.getPage().addBrowserWindowResizeListener(ev -> {
+			int width = ev.getWidth();
+			int height = ev.getHeight();
+			if (LOGGER.isDebugEnabled()) {
+				LOGGER.debug("Changed Window Size: [w={},h={}]", width, height);
+				Notification.show("Size Changed", "Changed Window Size: [w=" + width + ",h=" + height + "]",
+						Notification.Type.TRAY_NOTIFICATION);
+			}
+		});
+	}
+
+	public void navigateTo(String navigationState) {
+		navi.navigateTo(navigationState);
+	}
+
+	public class ClubNavigator extends Navigator {
+
+		private static final long serialVersionUID = -6503600786209888296L;
+		private final Stack<ClubhelperViews> navigationViewNames = new Stack<>();
+
+		ClubNavigator init(UI ui) {
+			init(ui, null, new SingleComponentContainerViewDisplay(ui));
+			return this;
+		}
+
+		@Override
+		public void navigateTo(String navigationState) {
+			ClubhelperViews byState = ClubhelperViews.byState(navigationState);
+			if (navigationViewNames.contains(byState)) {
+				int index = navigationViewNames.indexOf(byState);
+				LOGGER.warn("Navigating to previously visited View. Removing some history");
+				while (navigationViewNames.size() > index) {
+					navigationViewNames.remove(index);
+				}
+			}
+
+			int width = navi.getUI().getPage().getBrowserWindowWidth();
+			boolean loggedIn = securityGroupVerifier.isLoggedin();
+			if (!loggedIn && width < 1000) {
+				navigationViewNames.clear();
+				navigationViewNames.add(ClubhelperViews.MainView);
+				super.navigateTo(ClubhelperViews.LoginUI.name());
+			} else {
+				navigationViewNames.add(byState);
+				super.navigateTo(navigationState);
+			}
+
+		}
+
+		public void back() {
+			navigationViewNames.pop();
+			navigateTo(navigationViewNames.pop().name());
+		}
+	}
+}

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/navigation/ClubhelperViews.java

@@ -0,0 +1,14 @@
+package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.navigation;
+
+public enum ClubhelperViews {
+	MainView, EventDetails, PersonEditView, LoginUI;
+
+	public static ClubhelperViews byState(String state) {
+		for (ClubhelperViews v : values()) {
+			if (state.startsWith(v.name())) {
+				return v;
+			}
+		}
+		throw new IllegalArgumentException("View not found for state=" + state);
+	}
+}

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/navigation/HeadView.java

@@ -1,4 +1,4 @@
-package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui;
+package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.navigation;
 
 import java.io.IOException;
 import java.io.PipedInputStream;
@@ -19,7 +19,6 @@ import org.slf4j.LoggerFactory;
 
 import com.vaadin.contextmenu.ContextMenu;
 import com.vaadin.icons.VaadinIcons;
-import com.vaadin.navigator.Navigator;
 import com.vaadin.server.StreamResource;
 import com.vaadin.ui.AbstractComponent;
 import com.vaadin.ui.Alignment;
@@ -38,6 +37,7 @@ import de.kreth.vaadin.clubhelper.vaadinclubhelper.jasper.CalendarCreator;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.security.SecurityGroups;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.security.SecurityVerifier;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components.CalendarComponent.ClubEventProvider;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.navigation.ClubhelperNavigation.ClubNavigator;
 import net.sf.jasperreports.engine.JRException;
 import net.sf.jasperreports.engine.JasperExportManager;
 import net.sf.jasperreports.engine.JasperPrint;
@@ -60,11 +60,11 @@ public class HeadView extends HorizontalLayout {
 
 	private Label personLabel;
 
-	private final Navigator navigator;
+	private final ClubNavigator navigator;
 
 	private final SecurityVerifier securityVerifier;
 
-	public HeadView(Navigator navigator, Supplier<ZonedDateTime> startTime, Supplier<ZonedDateTime> endTime,
+	public HeadView(ClubNavigator navigator, Supplier<ZonedDateTime> startTime, Supplier<ZonedDateTime> endTime,
 			ClubEventProvider dataProvider, SecurityVerifier securityVerifier) {
 
 		this.navigator = navigator;
@@ -122,14 +122,15 @@ public class HeadView extends HorizontalLayout {
 		contextMenu.addItem("Export Jahr", ev1 -> calendarExport(ev1));
 		if (securityVerifier.getLoggedinPerson() != null) {
 			if (securityVerifier.isPermitted(SecurityGroups.ADMIN, SecurityGroups.UEBUNGSLEITER)) {
-				contextMenu.addItem("Personen verwalten", ev1 -> navigator.navigateTo(PersonEditView.VIEW_NAME));
+				contextMenu.addItem("Personen verwalten",
+						ev1 -> navigator.navigateTo(ClubhelperViews.PersonEditView.name()));
 			}
 			contextMenu.addItem("Abmelden", ev1 -> {
 				securityVerifier.setLoggedinPerson(null);
-				navigator.navigateTo(MainView.VIEW_NAME);
+				navigator.navigateTo(ClubhelperViews.MainView.name());
 			});
 		} else {
-			contextMenu.addItem("Anmelden", ev1 -> navigator.navigateTo(LoginUI.VIEW_NAME));
+			contextMenu.addItem("Anmelden", ev1 -> navigator.navigateTo(ClubhelperViews.LoginUI.name()));
 		}
 		contextMenu.open(50, 50);
 	}

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/navigation/LoginUI.java

@@ -1,65 +1,61 @@
-package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui;
+package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.navigation;
-
+
-import org.slf4j.Logger;
+import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import org.slf4j.LoggerFactory;
-
+
-import com.vaadin.navigator.Navigator;
+import com.vaadin.navigator.Navigator;
-import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
+import com.vaadin.navigator.View;
-import com.vaadin.ui.Alignment;
+import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
-import com.vaadin.ui.LoginForm;
+import com.vaadin.ui.Alignment;
-import com.vaadin.ui.Notification;
+import com.vaadin.ui.LoginForm;
-import com.vaadin.ui.VerticalLayout;
+import com.vaadin.ui.Notification;
-
+import com.vaadin.ui.VerticalLayout;
-import de.kreth.vaadin.clubhelper.vaadinclubhelper.dao.PersonDao;
+
-import de.kreth.vaadin.clubhelper.vaadinclubhelper.data.Person;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.dao.PersonDao;
-import de.kreth.vaadin.clubhelper.vaadinclubhelper.security.SecurityVerifier;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.data.Person;
-
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.security.SecurityVerifier;
-public class LoginUI extends VerticalLayout implements NamedView {
+
-
+public class LoginUI extends VerticalLayout implements View {
-	public static final String VIEW_NAME = "LoginUI";
+
-	private static final long serialVersionUID = 4339018452507960084L;
+	private static final long serialVersionUID = 4339018452507960084L;
-	private final Logger logger = LoggerFactory.getLogger(getClass());
+	private final Logger logger = LoggerFactory.getLogger(getClass());
-
+
-	private Navigator navigator;
+	private Navigator navigator;
-	private String parameters;
+	private String parameters;
-
+
-	public LoginUI(PersonDao personDao, SecurityVerifier securityGroupVerifier) {
+	public LoginUI(PersonDao personDao, SecurityVerifier securityGroupVerifier) {
-
+
-		LoginForm lf = new LoginForm();
+		LoginForm lf = new LoginForm();
-		lf.addLoginListener(e -> {
+		lf.addLoginListener(e -> {
-
+
-			String username = e.getLoginParameter("username");
+			String username = e.getLoginParameter("username");
-			String password = e.getLoginParameter("password");
+			String password = e.getLoginParameter("password");
-
+
-			try {
+			try {
-				Person loggedin = personDao.findLoginUser(username, password);
+				Person loggedin = personDao.findLoginUser(username, password);
-				securityGroupVerifier.setLoggedinPerson(loggedin);
+				securityGroupVerifier.setLoggedinPerson(loggedin);
-				navigator.navigateTo(MainView.VIEW_NAME + '/' + parameters);
+				navigator.navigateTo(ClubhelperViews.MainView.name() + '/' + parameters);
-			} catch (final Exception ex) {
+			} catch (final Exception ex) {
-				ex.printStackTrace();
+				ex.printStackTrace();
-				logger.error("Error on login for User={}", e.getLoginParameter("username"), ex);
+				logger.error("Error on login for User={}", e.getLoginParameter("username"), ex);
-				String message = "Incorrect user or password for " + e.getLoginParameter("username") + "\n"
+				String message = "Incorrect user or password for " + e.getLoginParameter("username") + "\n"
-						+ ex.getMessage();
+						+ ex.getMessage();
-				Notification.show(message, Notification.Type.ERROR_MESSAGE);
+				Notification.show(message, Notification.Type.ERROR_MESSAGE);
-			}
+			}
-		});
+		});
-		addComponent(lf);
+		addComponent(lf);
-		setComponentAlignment(lf, Alignment.MIDDLE_CENTER);
+		setComponentAlignment(lf, Alignment.MIDDLE_CENTER);
-		setSizeFull();
+		setSizeFull();
-
+
-	}
+	}
-
+
-	@Override
+	@Override
-	public void enter(ViewChangeEvent event) {
+	public void enter(ViewChangeEvent event) {
-		navigator = event.getNavigator();
+		navigator = event.getNavigator();
-		parameters = event.getParameters();
+		parameters = event.getParameters();
-		if (parameters == null) {
+		if (parameters == null) {
-			parameters = "";
+			parameters = "";
-		}
+		}
-	}
+	}
-
+
-	@Override
+}
-	public String getViewName() {
-		return VIEW_NAME;
-	}
-}

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/navigation/MainView.java

@@ -1,4 +1,4 @@
-package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui;
+package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.navigation;
 
 import java.util.List;
 import java.util.Set;
@@ -10,7 +10,7 @@ import org.slf4j.LoggerFactory;
 import org.vaadin.addon.calendar.ui.CalendarComponentEvents;
 
 import com.vaadin.event.selection.SelectionEvent;
-import com.vaadin.navigator.Navigator;
+import com.vaadin.navigator.View;
 import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
 import com.vaadin.ui.Button;
 import com.vaadin.ui.Grid.SelectionMode;
@@ -26,13 +26,11 @@ import de.kreth.vaadin.clubhelper.vaadinclubhelper.data.Person;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.security.SecurityVerifier;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components.CalendarComponent;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components.CalendarComponent.ClubEventProvider;
-import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components.EventDetails;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components.PersonGrid;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components.SingleEventView;
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.navigation.ClubhelperNavigation.ClubNavigator;
 
-public class MainView extends VerticalLayout implements NamedView {
+public class MainView extends VerticalLayout implements View {
-
-	public static final String VIEW_NAME = "";
 
 	private static final long serialVersionUID = 4831071242146146399L;
 	private final Logger LOGGER = LoggerFactory.getLogger(getClass());
@@ -48,7 +46,7 @@ public class MainView extends VerticalLayout implements NamedView {
 	private SingleEventView eventView;
 	private HorizontalLayout eventButtonLayout;
 
-	private Navigator navigator;
+	private ClubNavigator navigator;
 
 	private VerticalLayout eastLayout;
 
@@ -87,7 +85,7 @@ public class MainView extends VerticalLayout implements NamedView {
 
 	public void initUI(ViewChangeEvent event) {
 
-		navigator = event.getNavigator();
+		navigator = (ClubNavigator) event.getNavigator();
 
 		eventView = new SingleEventView(false);
 		eventView.setVisible(false);
@@ -104,7 +102,7 @@ public class MainView extends VerticalLayout implements NamedView {
 		close.setId("person.close");
 
 		Button eventDetails = new Button("Veranstaltung Details", ev -> {
-			navigator.navigateTo(EventDetails.VIEW_NAME);
+			navigator.navigateTo(ClubhelperViews.EventDetails.name());
 		});
 		eventDetails.setId("person.eventDetails");
 
@@ -178,7 +176,7 @@ public class MainView extends VerticalLayout implements NamedView {
 			openPersonViewForEvent(ev);
 		} else {
 			eventBusiness.setSelected(ev);
-			navigator.navigateTo(LoginUI.VIEW_NAME + '/' + ev.getId());
+			navigator.navigateTo(ClubhelperViews.LoginUI.name() + '/' + ev.getId());
 		}
 	}
 
@@ -202,9 +200,4 @@ public class MainView extends VerticalLayout implements NamedView {
 		eventBusiness.setSelected(ev);
 	}
 
-	@Override
-	public String getViewName() {
-		return VIEW_NAME;
-	}
-
 }

src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/navigation/PersonEditView.java

@@ -1,4 +1,4 @@
-package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui;
+package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.navigation;
 
 import java.util.ArrayList;
 import java.util.HashSet;
@@ -6,6 +6,7 @@ import java.util.Optional;
 
 import com.vaadin.event.selection.SelectionEvent;
 import com.vaadin.navigator.Navigator;
+import com.vaadin.navigator.View;
 import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
 import com.vaadin.ui.Button;
 import com.vaadin.ui.HorizontalLayout;
@@ -17,9 +18,8 @@ import de.kreth.vaadin.clubhelper.vaadinclubhelper.data.Person;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components.PersonEditDetails;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components.PersonGrid;
 
-public class PersonEditView extends VerticalLayout implements NamedView {
+public class PersonEditView extends VerticalLayout implements View {
 
-	public static final String VIEW_NAME = "PersonEditView";
 	private static final long serialVersionUID = 1770993670570422036L;
 
 	private PersonGrid personGrid;
@@ -51,7 +51,7 @@ public class PersonEditView extends VerticalLayout implements NamedView {
 
 		addComponent(addPerson);
 		Button backButton = new Button("Zurück");
-		backButton.addClickListener(ev -> navigator.navigateTo(MainView.VIEW_NAME));
+		backButton.addClickListener(ev -> navigator.navigateTo(ClubhelperViews.MainView.name()));
 		addComponent(backButton);
 	}
 
@@ -72,13 +72,7 @@ public class PersonEditView extends VerticalLayout implements NamedView {
 
 	@Override
 	public void enter(ViewChangeEvent event) {
-		NamedView.super.enter(event);
 		this.navigator = event.getNavigator();
 	}
 
-	@Override
-	public String getViewName() {
-		return VIEW_NAME;
-	}
-
 }