Remove navigator from login UI. Add tenant and user param. (#592)

* Remove navigator from login UI. Add tenant and user param.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Params as map.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Cleanup scss. Hide tenant field if provided as GET.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* make fields accessible.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Fix sonar issues.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* i18n available

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/AbstractHawkbitUI.java

@@ -19,16 +19,19 @@ import org.eclipse.hawkbit.ui.menu.DashboardEvent.PostViewChangeEvent;
 import org.eclipse.hawkbit.ui.menu.DashboardMenu;
 import org.eclipse.hawkbit.ui.menu.DashboardMenuItem;
 import org.eclipse.hawkbit.ui.push.EventPushStrategy;
+import org.eclipse.hawkbit.ui.themes.HawkbitTheme;
 import org.eclipse.hawkbit.ui.utils.HawkbitCommonUtil;
 import org.eclipse.hawkbit.ui.utils.SPUIDefinitions;
 import org.eclipse.hawkbit.ui.utils.SpringContextHelper;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationContext;
 import org.vaadin.spring.events.EventBus;
+import org.vaadin.spring.events.EventBus.UIEventBus;
 
+import com.vaadin.annotations.Theme;
 import com.vaadin.annotations.Title;
+import com.vaadin.annotations.Widgetset;
 import com.vaadin.navigator.Navigator;
 import com.vaadin.navigator.View;
 import com.vaadin.navigator.ViewChangeListener;
@@ -53,43 +56,41 @@ import com.vaadin.ui.themes.ValoTheme;
  *
  */
 @Title("hawkBit Update Server")
-public class HawkbitUI extends DefaultHawkbitUI implements DetachListener {
+@Widgetset(value = HawkbitTheme.WIDGET_SET_NAME)
+@Theme(HawkbitTheme.THEME_NAME)
+public abstract class AbstractHawkbitUI extends UI implements DetachListener {
     private static final long serialVersionUID = 1L;
 
-    private static final Logger LOG = LoggerFactory.getLogger(HawkbitUI.class);
+    private static final Logger LOG = LoggerFactory.getLogger(AbstractHawkbitUI.class);
 
     private static final String EMPTY_VIEW = "";
 
     private transient EventPushStrategy pushStrategy;
 
-    @Autowired
-    protected transient EventBus.UIEventBus eventBus;
+    protected final transient EventBus.UIEventBus eventBus;
 
-    @Autowired
-    private SpringViewProvider viewProvider;
+    private final SpringViewProvider viewProvider;
 
-    @Autowired
-    private transient ApplicationContext context;
+    private final transient ApplicationContext context;
 
-    @Autowired
-    private DashboardMenu dashboardMenu;
+    private final DashboardMenu dashboardMenu;
 
-    @Autowired
-    private ErrorView errorview;
+    private final ErrorView errorview;
 
-    @Autowired
-    private NotificationUnreadButton notificationUnreadButton;
+    private final NotificationUnreadButton notificationUnreadButton;
 
     private Label viewTitle;
 
-    /**
-     * Constructor taking the push strategy.
-     *
-     * @param pushStrategy
-     *            the strategy to push events from the backend to the UI
-     */
-    public HawkbitUI(final EventPushStrategy pushStrategy) {
+    protected AbstractHawkbitUI(final EventPushStrategy pushStrategy, final UIEventBus eventBus,
+            final SpringViewProvider viewProvider, final ApplicationContext context, final DashboardMenu dashboardMenu,
+            final ErrorView errorview, final NotificationUnreadButton notificationUnreadButton) {
         this.pushStrategy = pushStrategy;
+        this.eventBus = eventBus;
+        this.viewProvider = viewProvider;
+        this.context = context;
+        this.dashboardMenu = dashboardMenu;
+        this.errorview = errorview;
+        this.notificationUnreadButton = notificationUnreadButton;
     }
 
     @Override

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/DefaultHawkbitUI.java

@@ -1,25 +0,0 @@
-/**
- * Copyright (c) 2015 Bosch Software Innovations GmbH and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- */
-package org.eclipse.hawkbit.ui;
-
-import org.eclipse.hawkbit.ui.themes.HawkbitTheme;
-
-import com.vaadin.annotations.Theme;
-import com.vaadin.annotations.Widgetset;
-import com.vaadin.ui.UI;
-
-/**
- * Abstract class for the ui to set widgetset and theme.
- */
-@SuppressWarnings("serial")
-@Widgetset(value = HawkbitTheme.WIDGET_SET_NAME)
-@Theme(HawkbitTheme.THEME_NAME)
-public abstract class DefaultHawkbitUI extends UI {
-
-}

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/ErrorView.java

@@ -34,7 +34,7 @@ import com.vaadin.ui.VerticalLayout;
  */
 @SpringComponent
 @UIScope
-class ErrorView extends VerticalLayout implements View {
+public class ErrorView extends VerticalLayout implements View {
 
     private static final long serialVersionUID = 1L;
 
@@ -62,8 +62,8 @@ class ErrorView extends VerticalLayout implements View {
         }
         if (dashboardMenu.isAccessDenied(event.getViewName())) {
             final Notification nt = new Notification("Access denied",
-                    i18n.getMessage("message.accessdenied.view", new Object[] { event.getViewName() }), Type.ERROR_MESSAGE,
-                    false);
+                    i18n.getMessage("message.accessdenied.view", new Object[] { event.getViewName() }),
+                    Type.ERROR_MESSAGE, false);
             nt.setStyleName(SPUILabelDefinitions.SP_NOTIFICATION_ERROR_MESSAGE_STYLE);
             nt.setPosition(Position.BOTTOM_RIGHT);
             nt.show(UI.getCurrent().getPage());

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/artifacts/UploadArtifactView.java

@@ -16,7 +16,7 @@ import org.eclipse.hawkbit.repository.ArtifactManagement;
 import org.eclipse.hawkbit.repository.EntityFactory;
 import org.eclipse.hawkbit.repository.SoftwareModuleManagement;
 import org.eclipse.hawkbit.repository.SoftwareModuleTypeManagement;
-import org.eclipse.hawkbit.ui.HawkbitUI;
+import org.eclipse.hawkbit.ui.AbstractHawkbitUI;
 import org.eclipse.hawkbit.ui.SpPermissionChecker;
 import org.eclipse.hawkbit.ui.artifacts.details.ArtifactDetailsLayout;
 import org.eclipse.hawkbit.ui.artifacts.event.ArtifactDetailsEvent;
@@ -54,7 +54,7 @@ import com.vaadin.ui.VerticalLayout;
  * Display artifacts upload view.
  */
 @UIScope
-@SpringView(name = UploadArtifactView.VIEW_NAME, ui = HawkbitUI.class)
+@SpringView(name = UploadArtifactView.VIEW_NAME, ui = AbstractHawkbitUI.class)
 public class UploadArtifactView extends VerticalLayout implements View, BrowserWindowResizeListener {
 
     private static final long serialVersionUID = 1L;

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/distributions/DistributionsView.java

@@ -21,7 +21,7 @@ import org.eclipse.hawkbit.repository.SoftwareModuleManagement;
 import org.eclipse.hawkbit.repository.SoftwareModuleTypeManagement;
 import org.eclipse.hawkbit.repository.SystemManagement;
 import org.eclipse.hawkbit.repository.TargetManagement;
-import org.eclipse.hawkbit.ui.HawkbitUI;
+import org.eclipse.hawkbit.ui.AbstractHawkbitUI;
 import org.eclipse.hawkbit.ui.SpPermissionChecker;
 import org.eclipse.hawkbit.ui.artifacts.event.SoftwareModuleEvent;
 import org.eclipse.hawkbit.ui.artifacts.state.ArtifactUploadState;
@@ -64,7 +64,7 @@ import com.vaadin.ui.GridLayout;
  * Manage distributions and distributions type view.
  */
 @UIScope
-@SpringView(name = DistributionsView.VIEW_NAME, ui = HawkbitUI.class)
+@SpringView(name = DistributionsView.VIEW_NAME, ui = AbstractHawkbitUI.class)
 public class DistributionsView extends AbstractNotificationView implements BrowserWindowResizeListener {
 
     private static final long serialVersionUID = 1L;

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/filtermanagement/FilterManagementView.java

@@ -14,7 +14,7 @@ import javax.annotation.PreDestroy;
 import org.eclipse.hawkbit.repository.EntityFactory;
 import org.eclipse.hawkbit.repository.TargetFilterQueryManagement;
 import org.eclipse.hawkbit.repository.TargetManagement;
-import org.eclipse.hawkbit.ui.HawkbitUI;
+import org.eclipse.hawkbit.ui.AbstractHawkbitUI;
 import org.eclipse.hawkbit.ui.SpPermissionChecker;
 import org.eclipse.hawkbit.ui.UiProperties;
 import org.eclipse.hawkbit.ui.distributions.state.ManageDistUIState;
@@ -43,7 +43,7 @@ import com.vaadin.ui.VerticalLayout;
  * View for custom target filter management.
  */
 @UIScope
-@SpringView(name = FilterManagementView.VIEW_NAME, ui = HawkbitUI.class)
+@SpringView(name = FilterManagementView.VIEW_NAME, ui = AbstractHawkbitUI.class)
 public class FilterManagementView extends VerticalLayout implements View {
 
     private static final long serialVersionUID = 8751545414237389386L;

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/login/AbstractHawkbitLoginUI.java

@@ -8,67 +8,87 @@
  */
 package org.eclipse.hawkbit.ui.login;
 
-import java.net.URI;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.AbstractMap.SimpleImmutableEntry;
+import java.util.Arrays;
+import java.util.Collections;
 import java.util.Map;
+import java.util.stream.Collectors;
 
-import javax.annotation.PostConstruct;
 import javax.servlet.http.Cookie;
 
 import org.eclipse.hawkbit.im.authentication.MultitenancyIndicator;
 import org.eclipse.hawkbit.im.authentication.TenantUserPasswordAuthenticationToken;
+import org.eclipse.hawkbit.ui.AbstractHawkbitUI;
 import org.eclipse.hawkbit.ui.UiProperties;
 import org.eclipse.hawkbit.ui.components.SPUIComponentProvider;
+import org.eclipse.hawkbit.ui.themes.HawkbitTheme;
+import org.eclipse.hawkbit.ui.utils.SpringContextHelper;
 import org.eclipse.hawkbit.ui.utils.UIComponentIdProvider;
 import org.eclipse.hawkbit.ui.utils.VaadinMessageSource;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.core.io.Resource;
 import org.springframework.security.authentication.CredentialsExpiredException;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.AuthenticationException;
-import org.springframework.util.AntPathMatcher;
+import org.springframework.util.StringUtils;
 import org.vaadin.spring.security.VaadinSecurity;
 
+import com.vaadin.annotations.Theme;
+import com.vaadin.annotations.Title;
+import com.vaadin.annotations.Widgetset;
 import com.vaadin.event.ShortcutAction.KeyCode;
-import com.vaadin.navigator.View;
-import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
 import com.vaadin.server.FontAwesome;
 import com.vaadin.server.Page;
 import com.vaadin.server.Responsive;
+import com.vaadin.server.VaadinRequest;
 import com.vaadin.server.VaadinService;
 import com.vaadin.server.WebBrowser;
 import com.vaadin.shared.Position;
-import com.vaadin.spring.annotation.SpringView;
 import com.vaadin.ui.Alignment;
 import com.vaadin.ui.Button;
 import com.vaadin.ui.Component;
+import com.vaadin.ui.CssLayout;
+import com.vaadin.ui.CustomLayout;
 import com.vaadin.ui.HorizontalLayout;
 import com.vaadin.ui.Label;
 import com.vaadin.ui.Link;
 import com.vaadin.ui.Notification;
 import com.vaadin.ui.PasswordField;
 import com.vaadin.ui.TextField;
+import com.vaadin.ui.UI;
 import com.vaadin.ui.VerticalLayout;
 import com.vaadin.ui.themes.ValoTheme;
 
 /**
- * Login view for login credentials.
+ * Login UI window that is independent of the {@link AbstractHawkbitUI} itself.
+ *
  */
-@SpringView(name = "")
-public class LoginView extends VerticalLayout implements View {
-    private static final String TENANT_PATTERN_PLACEHOLDER = "tenant";
-    private static final String USER_PATTERN_PLACEHOLDER = "user";
-    private static final String LOGIN_TENANT_USER_URL_PATTERN = "**/#/{" + TENANT_PATTERN_PLACEHOLDER + "}/{"
-            + USER_PATTERN_PLACEHOLDER + "}";
-    private static final String LOGIN_USER_URL_PATTERN = "**/#/{" + USER_PATTERN_PLACEHOLDER + "}";
+@Title("hawkBit UI - Login")
+@Widgetset(value = HawkbitTheme.WIDGET_SET_NAME)
+@Theme(HawkbitTheme.THEME_NAME)
+public abstract class AbstractHawkbitLoginUI extends UI {
+    private static final Logger LOG = LoggerFactory.getLogger(AbstractHawkbitLoginUI.class);
 
-    private static final String LOGIN_TEXTFIELD = "login-textfield";
     private static final long serialVersionUID = 1L;
-    private static final Logger LOGGER = LoggerFactory.getLogger(LoginView.class);
+
+    private static final String USER_PARAMETER = "user";
+    private static final String TENANT_PARAMETER = "tenant";
+    private static final String DEMO_PARAMETER = "demo";
+    private static final int HUNDRED_DAYS_IN_SECONDS = 3600 * 24 * 100;
+    private static final String LOGIN_TEXTFIELD = "login-textfield";
 
     private static final String SP_LOGIN_USER = "sp-login-user";
     private static final String SP_LOGIN_TENANT = "sp-login-tenant";
 
+    private final transient ApplicationContext context;
+
     private final transient VaadinSecurity vaadinSecurity;
 
     private final VaadinMessageSource i18n;
@@ -77,7 +97,6 @@ public class LoginView extends VerticalLayout implements View {
 
     private final transient MultitenancyIndicator multiTenancyIndicator;
 
-    private final transient AntPathMatcher matcher = new AntPathMatcher();
     private boolean useCookie = true;
 
     private TextField username;
@@ -85,104 +104,139 @@ public class LoginView extends VerticalLayout implements View {
     private PasswordField password;
     private Button signin;
 
+    private Map<String, String> params;
+
     @Autowired
-    LoginView(final VaadinSecurity vaadinSecurity, final VaadinMessageSource i18n, final UiProperties uiProperties,
+    protected AbstractHawkbitLoginUI(final ApplicationContext context, final VaadinSecurity vaadinSecurity,
+            final VaadinMessageSource i18n, final UiProperties uiProperties,
             final MultitenancyIndicator multiTenancyIndicator) {
+        this.context = context;
         this.vaadinSecurity = vaadinSecurity;
         this.i18n = i18n;
         this.uiProperties = uiProperties;
         this.multiTenancyIndicator = multiTenancyIndicator;
     }
 
-    void loginAuthenticationFailedNotification() {
+    @Override
+    protected void init(final VaadinRequest request) {
+        SpringContextHelper.setContext(context);
+
+        try {
+            params = getQueryParams(Page.getCurrent().getLocation().toURL());
+        } catch (final MalformedURLException e) {
+            // Ignore params silently
+        }
+
+        if (params.containsKey(DEMO_PARAMETER)) {
+            login(uiProperties.getDemo().getTenant(), uiProperties.getDemo().getUser(),
+                    uiProperties.getDemo().getPassword(), false);
+        }
+
+        setContent(buildContent());
+
+        filloutUsernameTenantFields();
+        readCookie();
+    }
+
+    private VerticalLayout buildContent() {
+        final VerticalLayout rootLayout = new VerticalLayout();
+        rootLayout.setSizeFull();
+        rootLayout.setStyleName("main-content");
+
+        rootLayout.addComponent(buildHeader());
+
+        addLoginForm(rootLayout);
+
+        addFooter(rootLayout);
+
+        return rootLayout;
+    }
+
+    private void addLoginForm(final VerticalLayout rootLayout) {
+        final Component loginForm = buildLoginForm();
+        rootLayout.addComponent(loginForm);
+        rootLayout.setComponentAlignment(loginForm, Alignment.MIDDLE_CENTER);
+    }
+
+    private void addFooter(final VerticalLayout rootLayout) {
+        final Resource resource = context
+                .getResource("classpath:/VAADIN/themes/" + UI.getCurrent().getTheme() + "/layouts/footer.html");
+
+        try (InputStream resourceStream = resource.getInputStream()) {
+            final CustomLayout customLayout = new CustomLayout(resourceStream);
+            customLayout.setSizeUndefined();
+            rootLayout.addComponent(customLayout);
+            rootLayout.setComponentAlignment(customLayout, Alignment.BOTTOM_LEFT);
+        } catch (final IOException ex) {
+            LOG.error("Footer file cannot be loaded", ex);
+        }
+    }
+
+    private static Component buildHeader() {
+        final CssLayout cssLayout = new CssLayout();
+        cssLayout.setStyleName("view-header");
+        return cssLayout;
+    }
+
+    private void loginAuthenticationFailedNotification() {
         final Notification notification = new Notification(i18n.getMessage("notification.login.failed.title"));
         notification.setDescription(i18n.getMessage("notification.login.failed.description"));
         notification.setHtmlContentAllowed(true);
         notification.setStyleName("error closable");
         notification.setPosition(Position.BOTTOM_CENTER);
-        notification.setDelayMsec(1000);
+        notification.setDelayMsec(1_000);
         notification.show(Page.getCurrent());
     }
 
-    void loginCredentialsExpiredNotification() {
+    private void loginCredentialsExpiredNotification() {
         final Notification notification = new Notification(
                 i18n.getMessage("notification.login.failed.credentialsexpired.title"));
         notification.setDescription(i18n.getMessage("notification.login.failed.credentialsexpired.description"));
-        notification.setDelayMsec(10000);
+        notification.setDelayMsec(10_000);
         notification.setHtmlContentAllowed(true);
         notification.setStyleName("error closeable");
         notification.setPosition(Position.BOTTOM_CENTER);
         notification.show(Page.getCurrent());
     }
 
-    /**
-     * Renders the {@link View}.
-     */
-    @PostConstruct
-    public void render() {
-        final URI spURI = Page.getCurrent().getLocation();
-        final String uriPath = spURI.toString();
-        if (uriPath.contains("?demo")) {
-            login(uiProperties.getDemo().getTenant(), uiProperties.getDemo().getUser(),
-                    uiProperties.getDemo().getPassword(), false);
-        }
-        final Component loginForm = buildLoginForm();
-        addComponent(loginForm);
-        setComponentAlignment(loginForm, Alignment.MIDDLE_CENTER);
-
-        readCredentialsFromUriPath(uriPath);
-    }
-
-    private void readCredentialsFromUriPath(final String uriPath) {
-        String urlTenant = null;
-        String urlUser = null;
-        if (matcher.match(LOGIN_USER_URL_PATTERN, uriPath)) {
-            urlUser = matcher.extractUriTemplateVariables(LOGIN_USER_URL_PATTERN, uriPath)
-                    .get(USER_PATTERN_PLACEHOLDER);
-        } else if (matcher.match(LOGIN_TENANT_USER_URL_PATTERN, uriPath)) {
-            final Map<String, String> extractUriTemplateVariables = matcher
-                    .extractUriTemplateVariables(LOGIN_TENANT_USER_URL_PATTERN, uriPath);
-            urlTenant = extractUriTemplateVariables.get(TENANT_PATTERN_PLACEHOLDER);
-            urlUser = extractUriTemplateVariables.get(USER_PATTERN_PLACEHOLDER);
-        }
-
-        if (urlUser != null) {
+    private void filloutUsernameTenantFields() {
+        if (tenant != null && params.containsKey(TENANT_PARAMETER)) {
+            tenant.setValue(params.get(TENANT_PARAMETER));
+            tenant.setVisible(false);
+            useCookie = false;
+        }
+
+        if (params.containsKey(USER_PARAMETER)) {
+            username.setValue(params.get(USER_PARAMETER));
             useCookie = false;
-            filloutUsernameTenantFields(urlTenant, urlUser);
         }
     }
 
-    private void filloutUsernameTenantFields(final String tenantValue, final String userValue) {
-        if (tenant != null && tenantValue != null) {
-            tenant.setValue(tenantValue);
-        }
-        if (userValue != null) {
-            username.setValue(userValue);
-        }
-    }
-
-    private Component buildLoginForm() {
+    protected Component buildLoginForm() {
 
         final VerticalLayout loginPanel = new VerticalLayout();
         loginPanel.setSizeUndefined();
         loginPanel.setSpacing(true);
-        loginPanel.addStyleName("dashboard-view");
         loginPanel.addStyleName("login-panel");
         Responsive.makeResponsive(loginPanel);
         loginPanel.addComponent(buildFields());
         loginPanel.addComponent(buildLinks());
 
+        checkBrowserSupport(loginPanel);
+
+        return loginPanel;
+    }
+
+    protected void checkBrowserSupport(final VerticalLayout loginPanel) {
         // Check if IE browser is not supported ( < IE11 )
         if (isUnsupportedBrowser()) {
             // Disable sign-in button and display a message
             signin.setEnabled(Boolean.FALSE);
             loginPanel.addComponent(buildUnsupportedMessage());
         }
-
-        return loginPanel;
     }
 
-    private Component buildFields() {
+    protected Component buildFields() {
         final HorizontalLayout fields = new HorizontalLayout();
         fields.setSpacing(true);
         fields.addStyleName("fields");
@@ -259,7 +313,7 @@ public class LoginView extends VerticalLayout implements View {
         }
     }
 
-    private Component buildLinks() {
+    protected Component buildLinks() {
 
         final HorizontalLayout links = new HorizontalLayout();
         links.setSpacing(true);
@@ -306,23 +360,12 @@ public class LoginView extends VerticalLayout implements View {
         return label;
     }
 
-    private boolean isUnsupportedBrowser() {
+    private static boolean isUnsupportedBrowser() {
         final WebBrowser webBrowser = Page.getCurrent().getWebBrowser();
-        if (webBrowser.isIE() && webBrowser.getBrowserMajorVersion() < 11) {
-            return true;
-        }
-        return false;
+        return webBrowser.isIE() && webBrowser.getBrowserMajorVersion() < 11;
     }
 
-    /*
-     * (non-Javadoc)
-     * 
-     * @see
-     * com.vaadin.navigator.View#enter(com.vaadin.navigator.ViewChangeListener.
-     * ViewChangeEvent)
-     */
-    @Override
-    public void enter(final ViewChangeEvent event) {
+    private void readCookie() {
         if (!useCookie) {
             return;
         }
@@ -354,7 +397,7 @@ public class LoginView extends VerticalLayout implements View {
             final Cookie tenantCookie = new Cookie(SP_LOGIN_TENANT, tenant.getValue().toUpperCase());
             tenantCookie.setPath("/");
             // 100 days
-            tenantCookie.setMaxAge(3600 * 24 * 100);
+            tenantCookie.setMaxAge(HUNDRED_DAYS_IN_SECONDS);
             tenantCookie.setHttpOnly(true);
             tenantCookie.setSecure(uiProperties.getLogin().getCookie().isSecure());
             VaadinService.getCurrentResponse().addCookie(tenantCookie);
@@ -363,13 +406,13 @@ public class LoginView extends VerticalLayout implements View {
         final Cookie usernameCookie = new Cookie(SP_LOGIN_USER, username.getValue());
         usernameCookie.setPath("/");
         // 100 days
-        usernameCookie.setMaxAge(3600 * 24 * 100);
+        usernameCookie.setMaxAge(HUNDRED_DAYS_IN_SECONDS);
         usernameCookie.setHttpOnly(true);
         usernameCookie.setSecure(uiProperties.getLogin().getCookie().isSecure());
         VaadinService.getCurrentResponse().addCookie(usernameCookie);
     }
 
-    private Cookie getCookieByName(final String name) {
+    private static Cookie getCookieByName(final String name) {
         // Fetch all cookies from the request
         final Cookie[] cookies = VaadinService.getCurrentRequest().getCookies();
 
@@ -398,15 +441,50 @@ public class LoginView extends VerticalLayout implements View {
             }
 
         } catch (final CredentialsExpiredException e) {
-            LOGGER.debug("Credential expired", e);
+            LOG.debug("Credential expired", e);
             loginCredentialsExpiredNotification();
         } catch (final AuthenticationException e) {
-            LOGGER.debug("Authentication failed", e);
+            LOG.debug("Authentication failed", e);
             /* if not successful */
             loginAuthenticationFailedNotification();
         } catch (final Exception e) {
-            LOGGER.debug("Login failed", e);
+            LOG.debug("Login failed", e);
             loginAuthenticationFailedNotification();
         }
     }
+
+    protected Map<String, String> getParams() {
+        return params;
+    }
+
+    protected TextField getUsername() {
+        return username;
+    }
+
+    protected TextField getTenant() {
+        return tenant;
+    }
+
+    protected PasswordField getPassword() {
+        return password;
+    }
+
+    protected VaadinMessageSource getI18n() {
+        return i18n;
+    }
+
+    private static Map<String, String> getQueryParams(final URL url) {
+        if (!StringUtils.hasLength(url.getQuery())) {
+            return Collections.emptyMap();
+        }
+        return Arrays.stream(url.getQuery().split("&")).map(AbstractHawkbitLoginUI::splitQueryParameter)
+                .collect(Collectors.toMap(SimpleImmutableEntry::getKey, SimpleImmutableEntry::getValue));
+    }
+
+    private static SimpleImmutableEntry<String, String> splitQueryParameter(final String it) {
+        final int idx = it.indexOf("=");
+        final String key = idx > 0 ? it.substring(0, idx) : it;
+        final String value = idx > 0 && it.length() > idx + 1 ? it.substring(idx + 1) : null;
+        return new SimpleImmutableEntry<>(key.toLowerCase(), value);
+    }
 }

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/login/HawkbitLoginUI.java

@@ -1,94 +0,0 @@
-/**
- * Copyright (c) 2015 Bosch Software Innovations GmbH and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- */
-package org.eclipse.hawkbit.ui.login;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-import org.eclipse.hawkbit.ui.DefaultHawkbitUI;
-import org.eclipse.hawkbit.ui.HawkbitUI;
-import org.eclipse.hawkbit.ui.utils.SpringContextHelper;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.context.ApplicationContext;
-import org.springframework.core.io.Resource;
-
-import com.vaadin.annotations.Title;
-import com.vaadin.navigator.Navigator;
-import com.vaadin.server.VaadinRequest;
-import com.vaadin.spring.navigator.SpringViewProvider;
-import com.vaadin.ui.Component;
-import com.vaadin.ui.CssLayout;
-import com.vaadin.ui.CustomLayout;
-import com.vaadin.ui.HorizontalLayout;
-import com.vaadin.ui.UI;
-import com.vaadin.ui.VerticalLayout;
-
-/**
- * Login UI window that is independent of the {@link HawkbitUI} itself.
- *
- */
-@Title("hawkBit UI - Login")
-public class HawkbitLoginUI extends DefaultHawkbitUI {
-    private static final Logger LOG = LoggerFactory.getLogger(HawkbitLoginUI.class);
-
-    private static final long serialVersionUID = 1L;
-
-    private final SpringViewProvider viewProvider;
-
-    private final transient ApplicationContext context;
-
-    @Autowired
-    protected HawkbitLoginUI(final SpringViewProvider viewProvider, final ApplicationContext context) {
-        this.viewProvider = viewProvider;
-        this.context = context;
-    }
-
-    @Override
-    protected void init(final VaadinRequest request) {
-        SpringContextHelper.setContext(context);
-
-        final VerticalLayout rootLayout = new VerticalLayout();
-        final Component header = buildHeader();
-
-        rootLayout.addComponent(header);
-        rootLayout.setSizeFull();
-
-        final HorizontalLayout content = new HorizontalLayout();
-        rootLayout.addComponent(content);
-        content.setStyleName("view-content");
-        content.setSizeFull();
-        rootLayout.setStyleName("main-content");
-
-        rootLayout.setExpandRatio(header, 1.0F);
-        rootLayout.setExpandRatio(content, 2.0F);
-        final Resource resource = context
-                .getResource("classpath:/VAADIN/themes/" + UI.getCurrent().getTheme() + "/layouts/footer.html");
-
-        try (InputStream resourceStream = resource.getInputStream()) {
-            final CustomLayout customLayout = new CustomLayout(resourceStream);
-            customLayout.setSizeUndefined();
-            rootLayout.addComponent(customLayout);
-        } catch (final IOException ex) {
-            LOG.error("Footer file cannot be loaded", ex);
-        }
-        setContent(rootLayout);
-
-        final Navigator navigator = new Navigator(this, content);
-        navigator.addProvider(viewProvider);
-        setNavigator(navigator);
-    }
-
-    private Component buildHeader() {
-        final CssLayout cssLayout = new CssLayout();
-        cssLayout.setStyleName("view-header");
-        return cssLayout;
-    }
-}

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/management/DeploymentView.java

@@ -22,7 +22,7 @@ import org.eclipse.hawkbit.repository.SystemManagement;
 import org.eclipse.hawkbit.repository.TargetFilterQueryManagement;
 import org.eclipse.hawkbit.repository.TargetManagement;
 import org.eclipse.hawkbit.repository.TargetTagManagement;
-import org.eclipse.hawkbit.ui.HawkbitUI;
+import org.eclipse.hawkbit.ui.AbstractHawkbitUI;
 import org.eclipse.hawkbit.ui.SpPermissionChecker;
 import org.eclipse.hawkbit.ui.UiProperties;
 import org.eclipse.hawkbit.ui.common.table.BaseEntityEventType;
@@ -82,7 +82,7 @@ import com.vaadin.ui.UI;
  * Target status and deployment management view
  */
 @UIScope
-@SpringView(name = DeploymentView.VIEW_NAME, ui = HawkbitUI.class)
+@SpringView(name = DeploymentView.VIEW_NAME, ui = AbstractHawkbitUI.class)
 public class DeploymentView extends AbstractNotificationView implements BrowserWindowResizeListener {
 
     private static final long serialVersionUID = 1L;

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/rollout/RolloutView.java

@@ -20,7 +20,7 @@ import org.eclipse.hawkbit.repository.RolloutManagement;
 import org.eclipse.hawkbit.repository.TargetFilterQueryManagement;
 import org.eclipse.hawkbit.repository.TargetManagement;
 import org.eclipse.hawkbit.repository.model.Rollout;
-import org.eclipse.hawkbit.ui.HawkbitUI;
+import org.eclipse.hawkbit.ui.AbstractHawkbitUI;
 import org.eclipse.hawkbit.ui.SpPermissionChecker;
 import org.eclipse.hawkbit.ui.UiProperties;
 import org.eclipse.hawkbit.ui.rollout.event.RolloutEvent;
@@ -46,7 +46,7 @@ import com.vaadin.ui.VerticalLayout;
  * Rollout management view.
  */
 @UIScope
-@SpringView(name = RolloutView.VIEW_NAME, ui = HawkbitUI.class)
+@SpringView(name = RolloutView.VIEW_NAME, ui = AbstractHawkbitUI.class)
 public class RolloutView extends VerticalLayout implements View {
 
     private static final long serialVersionUID = -6199789714170913988L;

hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/tenantconfiguration/TenantConfigurationDashboardView.java

@@ -19,7 +19,7 @@ import org.eclipse.hawkbit.repository.DistributionSetTypeManagement;
 import org.eclipse.hawkbit.repository.SystemManagement;
 import org.eclipse.hawkbit.repository.TenantConfigurationManagement;
 import org.eclipse.hawkbit.security.SecurityTokenGenerator;
-import org.eclipse.hawkbit.ui.HawkbitUI;
+import org.eclipse.hawkbit.ui.AbstractHawkbitUI;
 import org.eclipse.hawkbit.ui.SpPermissionChecker;
 import org.eclipse.hawkbit.ui.UiProperties;
 import org.eclipse.hawkbit.ui.components.SPUIComponentProvider;
@@ -48,7 +48,7 @@ import com.vaadin.ui.VerticalLayout;
  * Main UI for the system configuration view.
  */
 @UIScope
-@SpringView(name = TenantConfigurationDashboardView.VIEW_NAME, ui = HawkbitUI.class)
+@SpringView(name = TenantConfigurationDashboardView.VIEW_NAME, ui = AbstractHawkbitUI.class)
 public class TenantConfigurationDashboardView extends CustomComponent implements View, ConfigurationItemChangeListener {
 
     public static final String VIEW_NAME = "spSystemConfig";

hawkbit-ui/src/main/resources/VAADIN/themes/hawkbit/customstyles/login.scss

@@ -62,20 +62,6 @@
       }
     }
 
-    .labels {
-      display: block;
-
-      .h4 {
-        margin: 0;
-        vertical-align: baseline;
-      }
-
-      .h3 {
-        margin: 0;
-        float: right;
-      }
-    }
-
     .fields .v-icon {
       opacity: .3;
     }