Java tutorial
/* Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.activiti.explorer.ui; import org.activiti.explorer.I18nManager; import org.activiti.explorer.Messages; import org.activiti.explorer.navigation.NavigationFragmentChangeListener; import org.activiti.explorer.navigation.UriFragment; import org.activiti.explorer.ui.login.LoginPage; import org.activiti.explorer.ui.mainlayout.ExplorerLayout; import org.activiti.explorer.ui.mainlayout.MainLayout; import org.springframework.beans.factory.annotation.Autowired; import com.vaadin.ui.Component; import com.vaadin.ui.UriFragmentUtility; import com.vaadin.ui.Window; /** * @author Joram Barrez */ public class MainWindow extends Window { private static final long serialVersionUID = 1L; @Autowired protected I18nManager i18nManager; @Autowired protected NavigationFragmentChangeListener navigationFragmentChangeListener; // UI protected MainLayout mainLayout; protected UriFragmentUtility uriFragmentUtility; protected UriFragment currentUriFragment; protected boolean showingLoginPage; public MainWindow() { setTheme(ExplorerLayout.THEME); } @Override public void attach() { super.attach(); setCaption(i18nManager.getMessage(Messages.APP_TITLE)); } public void showLoginPage() { showingLoginPage = true; addStyleName(ExplorerLayout.STYLE_LOGIN_PAGE); setContent(new LoginPage()); } public void showDefaultContent() { showingLoginPage = false; removeStyleName(ExplorerLayout.STYLE_LOGIN_PAGE); addStyleName("Default style"); // Vaadin bug: must set something or old style (eg. login page style) is not overwritten // init general look and feel mainLayout = new MainLayout(); setContent(mainLayout); // init hidden components initHiddenComponents(); } // View handling public void switchView(Component component) { mainLayout.setMainContent(component); } public void setMainNavigation(String navigation) { mainLayout.setMainNavigation(navigation); } // URL handling protected void initHiddenComponents() { // Add the URI Fragent utility uriFragmentUtility = new UriFragmentUtility(); mainLayout.addComponent(uriFragmentUtility); // Add listener to control page flow based on URI uriFragmentUtility.addListener(navigationFragmentChangeListener); } public UriFragment getCurrentUriFragment() { return currentUriFragment; } /** * Sets the current {@link UriFragment}. * Won't trigger navigation, just updates the URI fragment in the browser. */ public void setCurrentUriFragment(UriFragment fragment) { this.currentUriFragment = fragment; if (fragmentChanged(fragment)) { if (fragment != null) { uriFragmentUtility.setFragment(fragment.toString(), false); } else { uriFragmentUtility.setFragment("", false); } } } private boolean fragmentChanged(UriFragment fragment) { String fragmentString = fragment.toString(); if (fragmentString == null) { return uriFragmentUtility.getFragment() != null; } else { return !fragmentString.equals(uriFragmentUtility.getFragment()); } } public boolean isShowingLoginPage() { return showingLoginPage; } public void setNavigationFragmentChangeListener( NavigationFragmentChangeListener navigationFragmentChangeListener) { this.navigationFragmentChangeListener = navigationFragmentChangeListener; } public void setI18nManager(I18nManager i18nManager) { this.i18nManager = i18nManager; } }