Java tutorial
/******************************************************************************* * Copyright (c) 2014 antoniomariasanchez at gmail.com. * All rights reserved. This program and the accompanying materials * are made available under the terms of the GNU Public License v3.0 * which accompanies this distribution, and is available at * http://www.gnu.org/licenses/gpl.html * * Contributors: * antoniomaria - initial API and implementation ******************************************************************************/ package net.sf.gazpachoquest.questionnaires.views.login; import java.util.Collections; import java.util.Locale; import net.sf.gazpachoquest.api.QuestionnaireResource; import net.sf.gazpachoquest.questionnaires.views.QuestionnaireView; import org.apache.cxf.jaxrs.client.JAXRSClientFactory; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider; import com.vaadin.navigator.View; import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent; import com.vaadin.server.VaadinService; import com.vaadin.server.WrappedSession; import com.vaadin.shared.ui.MarginInfo; import com.vaadin.ui.Alignment; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.ComboBox; import com.vaadin.ui.CustomComponent; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.TextField; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.themes.Reindeer; //@CDIView(OldLoginView.NAME) public class OldLoginView extends CustomComponent implements View, Button.ClickListener { private static final long serialVersionUID = 2314128852757221652L; private static Logger logger = LoggerFactory.getLogger(OldLoginView.class); public static final String NAME = ""; private final TextField invitationTextField; private final Button enterButton; private ComboBox createLanguageSelector() { ComboBox languageSelector = new ComboBox("com.vaadin.demo.dashboard.DashboardUI.Language"); languageSelector.setImmediate(true); languageSelector.setNullSelectionAllowed(false); addLocale(Locale.ENGLISH, languageSelector); addLocale(Locale.FRENCH, languageSelector); addLocale(new Locale("es"), languageSelector); // languageSelector.setValue(I18NStaticService.getI18NServive().getLocale()); /*-languageSelector.addValueChangeListener(new ValueChangeListener() { private static final long serialVersionUID = 1L; @Override public void valueChange(ValueChangeEvent event) { Locale locale = (Locale) (event.getProperty().getValue()); I18NStaticService.getI18NServive().setLocale(locale); getUI().requestRepaintAll(); } });*/ return languageSelector; } private void addLocale(Locale locale, ComboBox languageSelector) { languageSelector.addItem(locale); languageSelector.setItemCaption(locale, "XX"); } public OldLoginView() { setSizeFull(); // Language bar in the top-right corner for selecting // invitation interface language final HorizontalLayout languageBar = new HorizontalLayout(); languageBar.setHeight("50px"); // addComponent(languageBar); // setComponentAlignment(languageBar, Alignment.TOP_RIGHT); // Allow selecting a language. We are in a constructor of a // CustomComponent, so preselecting the current // language of the application can not be done before // this (and the selection) component are attached to // the application. final ComboBox languageSelector = new ComboBox("Select a language") { @Override public void attach() { super.attach(); // setValue(getLocale()); } }; // for (int i=0; i<locales.length; i++) { String locale = "es"; languageSelector.addItem(locale); languageSelector.setItemCaption(locale, "espaol"); // Automatically select the current locale // if (locales[i].equals(getLocale())) languageSelector.setValue(locale); // } // Create the invitation input field invitationTextField = new TextField("Invitation key:"); invitationTextField.setWidth("300px"); invitationTextField.setRequired(true); invitationTextField.setInputPrompt("Your questionnair invitation key (eg. 12345678)"); invitationTextField.setInvalidAllowed(false); // Create login button enterButton = new Button("Enter", this); // Add both to a panel VerticalLayout fields = new VerticalLayout(languageSelector, invitationTextField, enterButton); fields.setCaption("Please enter your invitation key to access the questionnair"); fields.setSpacing(true); fields.setMargin(new MarginInfo(true, true, true, false)); fields.setSizeUndefined(); // The view root layout VerticalLayout viewLayout = new VerticalLayout(fields); viewLayout.setSizeFull(); viewLayout.setComponentAlignment(fields, Alignment.MIDDLE_CENTER); viewLayout.setStyleName(Reindeer.LAYOUT_BLUE); setCompositionRoot(viewLayout); } @Override public void enter(ViewChangeEvent event) { // focus the username field when invitation arrives to the login view invitationTextField.focus(); } @Override public void buttonClick(ClickEvent event) { logger.info("Submitting login"); // List<QuestionnaireDTO> questionnaires = questionnairResource.list(); // System.out.println(questionnaires); // // Validate the fields using the navigator. By using validors for the // fields we reduce the amount of queries we have to use to the database // for wrongly entered passwords // if (!invitationTextField.isValid()) { return; } String invitation = invitationTextField.getValue(); WrappedSession session = VaadinService.getCurrentRequest().getWrappedSession(); QuestionnaireResource proxy = JAXRSClientFactory.create("", QuestionnaireResource.class, Collections.singletonList(new JacksonJsonProvider()), "respondent", invitation, null); // // Validate username and password with database here. For examples sake // I use a dummy username and password. // boolean isValid = true; if (isValid) { // Store the current invitation in the service session getSession().setAttribute("invitation", invitation); session.setAttribute("username", "respondent"); session.setAttribute("password", invitation); // Navigate to main view getUI().getNavigator().navigateTo(QuestionnaireView.NAME); } else { // Wrong password clear the password field and refocuses it invitationTextField.setValue(null); invitationTextField.focus(); } } }