Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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 dk.teachus.frontend.pages; import java.io.Serializable; import java.util.ArrayList; import java.util.List; import java.util.Locale; import org.apache.wicket.Application; import org.apache.wicket.AttributeModifier; import org.apache.wicket.RestartResponseAtInterceptPageException; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.Button; import org.apache.wicket.markup.html.form.DropDownChoice; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.PasswordTextField; import org.apache.wicket.markup.html.form.TextField; import org.apache.wicket.markup.html.panel.FeedbackPanel; import org.apache.wicket.model.CompoundPropertyModel; import org.apache.wicket.model.Model; import org.apache.wicket.model.PropertyModel; import org.apache.wicket.util.cookies.CookieDefaults; import org.apache.wicket.util.cookies.CookieUtils; import dk.teachus.frontend.TeachUsApplication; import dk.teachus.frontend.TeachUsSession; import dk.teachus.frontend.components.Select2Enabler; import dk.teachus.frontend.components.form.DefaultFocusBehavior; import dk.teachus.frontend.components.menu.MenuItem; import dk.teachus.frontend.components.menu.MenuItemPageLink; import dk.teachus.frontend.utils.LocaleChoiceRenderer; public abstract class UnAuthenticatedBasePage extends BasePage { private static final long serialVersionUID = 1L; public static final String USERNAME_PATH = "signInForm.username"; public static final String PASSWORD_PATH = "signInForm.password"; public static final String REMEMBER_PATH = "signInForm.remember"; public static enum UnAuthenticatedPageCategory implements PageCategory { INFO } public static class User implements Serializable { private static final long serialVersionUID = 1L; private String username; private String password; public boolean isRemember() { return true; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } } private Locale locale; private User user; public UnAuthenticatedBasePage() { createSignInBox(); createLocaleBox(); } private void createSignInBox() { add(new Label("signInLabel", TeachUsSession.get().getString("General.signIn"))); //$NON-NLS-1$ //$NON-NLS-2$ add(new FeedbackPanel("feedback")); user = new User(); final Form<User> signInForm = new Form<User>("signInForm", new CompoundPropertyModel<User>(user)) { //$NON-NLS-1$ private static final long serialVersionUID = 1L; @Override protected void onSubmit() { signin(); } }; add(signInForm); final TextField<String> username = new TextField<String>("username"); //$NON-NLS-1$ username.setOutputMarkupId(true); username.setRequired(true); username.add(new DefaultFocusBehavior()); username.add(AttributeModifier.replace("placeholder", TeachUsSession.get().getString("General.username"))); signInForm.add(username); final PasswordTextField password = new PasswordTextField("password"); password.setResetPassword(false); password.add(AttributeModifier.replace("placeholder", TeachUsSession.get().getString("General.password"))); signInForm.add(password); signInForm.add(new Button("signIn", new Model<String>("Log ind"))); } private void signin() { TeachUsSession teachUsSession = TeachUsSession.get(); teachUsSession.signIn(user.getUsername(), user.getPassword()); if (teachUsSession.isAuthenticated()) { if (user.isRemember()) { CookieDefaults settings = new CookieDefaults(); // 14 days settings.setMaxAge(60 * 60 * 24 * 14); CookieUtils cookieUtils = new CookieUtils(settings); cookieUtils.save("username", user.getUsername()); cookieUtils.save("password", user.getPassword()); } if (continueToOriginalDestination() == false) { throw new RestartResponseAtInterceptPageException(Application.get().getHomePage()); } } } private void createLocaleBox() { add(new Label("localeLabel", TeachUsSession.get().getString("General.locale"))); Form<Void> localeForm = new Form<Void>("localeForm") { private static final long serialVersionUID = 1L; @Override public boolean isVisible() { return TeachUsSession.get().isAuthenticated() == false; } }; add(localeForm); setLocale(TeachUsSession.get().getLocale()); List<Locale> availableLocales = TeachUsApplication.get().getAvailableLocales(); DropDownChoice<Locale> localeDropDown = new DropDownChoice<Locale>("locale", new PropertyModel<Locale>(this, "locale"), availableLocales, new LocaleChoiceRenderer()); localeDropDown.add(new Select2Enabler()); localeForm.add(localeDropDown); localeDropDown.add(new AjaxFormComponentUpdatingBehavior("onchange") { private static final long serialVersionUID = 1L; @Override protected void onUpdate(AjaxRequestTarget target) { TeachUsSession.get().changeLocale(getLocale()); getRequestCycle().setResponsePage(UnAuthenticatedBasePage.this.getClass()); } }); } @Override public Locale getLocale() { return locale; } public void setLocale(Locale locale) { this.locale = locale; } @Override public List<MenuItem> getMenuItems() { List<MenuItem> menuItems = new ArrayList<MenuItem>(); menuItems.add(new MenuItemPageLink(UnAuthenticatedPageCategory.INFO, TeachUsSession.get().getString("General.info"), InfoPage.class)); return menuItems; } @Override public List<MenuItem> getRightMenuItems() { return null; } @Override public abstract UnAuthenticatedPageCategory getPageCategory(); }