Java tutorial
/******************************************************************************* * This file is part of the EEG-database project * * ========================================== * * Copyright (C) 2013 by University of West Bohemia (http://www.zcu.cz/en/) * * *********************************************************************************************************************** * * 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. * * *********************************************************************************************************************** * * AddMemberToGroupPage.java, 2013/10/02 00:01 Jakub Rinkes ******************************************************************************/ package cz.zcu.kiv.eegdatabase.wui.ui.groups.form; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.wicket.RestartResponseAtInterceptPageException; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.markup.html.form.AjaxButton; import org.apache.wicket.authroles.authorization.strategies.role.annotations.AuthorizeInstantiation; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.DropDownChoice; import org.apache.wicket.markup.html.form.EnumChoiceRenderer; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.TextField; import org.apache.wicket.markup.html.panel.FeedbackPanel; import org.apache.wicket.model.Model; import org.apache.wicket.request.mapper.parameter.PageParameters; import org.apache.wicket.spring.injection.annot.SpringBean; import org.apache.wicket.util.string.StringValue; import cz.zcu.kiv.eegdatabase.data.pojo.Person; import cz.zcu.kiv.eegdatabase.data.pojo.ResearchGroupMembership; import cz.zcu.kiv.eegdatabase.data.pojo.ResearchGroupMembershipId; import cz.zcu.kiv.eegdatabase.wui.components.menu.button.ButtonPageMenu; import cz.zcu.kiv.eegdatabase.wui.components.page.BasePage; import cz.zcu.kiv.eegdatabase.wui.components.page.MenuPage; import cz.zcu.kiv.eegdatabase.wui.components.utils.PageParametersUtils; import cz.zcu.kiv.eegdatabase.wui.components.utils.ResourceUtils; import cz.zcu.kiv.eegdatabase.wui.core.GroupRole; import cz.zcu.kiv.eegdatabase.wui.core.group.ResearchGroupFacade; import cz.zcu.kiv.eegdatabase.wui.core.person.PersonFacade; import cz.zcu.kiv.eegdatabase.wui.core.security.SecurityFacade; import cz.zcu.kiv.eegdatabase.wui.ui.groups.GroupPageLeftMenu; import cz.zcu.kiv.eegdatabase.wui.ui.groups.ListOfMembersGroupPage; import cz.zcu.kiv.eegdatabase.wui.ui.groups.ListResearchGroupsPage; import cz.zcu.kiv.eegdatabase.wui.ui.groups.ResearchGroupsDetailPage; /** * Page for add member to group action. * * @author Jakub Rinkes * */ @AuthorizeInstantiation(value = { "ROLE_READER", "ROLE_USER", "ROLE_EXPERIMENTER", "ROLE_ADMIN" }) public class AddMemberToGroupPage extends MenuPage { private static final long serialVersionUID = 7280002331574740721L; protected Log log = LogFactory.getLog(getClass()); @SpringBean SecurityFacade securityFacade; @SpringBean ResearchGroupFacade facade; @SpringBean PersonFacade personFacade; public AddMemberToGroupPage(PageParameters parameters) { setPageTitle(ResourceUtils.getModel("pageTitle.addMemberToGroup")); add(new ButtonPageMenu("leftMenu", prepareLeftMenu())); StringValue value = parseParameters(parameters); int groupId = value.toInt(); if (!securityFacade.userIsAdminInGroup(groupId)) throw new RestartResponseAtInterceptPageException(ResearchGroupsDetailPage.class, PageParametersUtils.getDefaultPageParameters(groupId)); setupComponents(groupId); } private void setupComponents(final int groupId) { add(new Label("title", facade.getResearchGroupTitle(groupId))); add(new AddMemberForm("form", facade, personFacade, getFeedback(), groupId)); } private GroupPageLeftMenu[] prepareLeftMenu() { List<GroupPageLeftMenu> list = new ArrayList<GroupPageLeftMenu>(); boolean authorizedToRequestGroupRole = securityFacade.isAuthorizedToRequestGroupRole(); for (GroupPageLeftMenu tmp : GroupPageLeftMenu.values()) list.add(tmp); if (!authorizedToRequestGroupRole) list.remove(GroupPageLeftMenu.REQUEST_FOR_GROUP_ROLE); GroupPageLeftMenu[] array = new GroupPageLeftMenu[list.size()]; return list.toArray(array); } private StringValue parseParameters(PageParameters parameters) { StringValue value = parameters.get(BasePage.DEFAULT_PARAM_ID); if (value.isNull() || value.isEmpty()) throw new RestartResponseAtInterceptPageException(ListResearchGroupsPage.class); return value; } // inner for for add member to group action. private class AddMemberForm extends Form<Void> { private static final long serialVersionUID = 1L; public AddMemberForm(String id, final ResearchGroupFacade facade, final PersonFacade personFacade, final FeedbackPanel feedback, final int groupId) { super(id); final TextField<String> usernameField = new TextField<String>("username", new Model<String>("")); usernameField.setRequired(true); usernameField.setLabel(ResourceUtils.getModel("label.email")); final DropDownChoice<GroupRole> roles = new DropDownChoice<GroupRole>("roles", new Model<GroupRole>(), Arrays.asList(GroupRole.values()), new EnumChoiceRenderer<GroupRole>()); roles.setLabel(ResourceUtils.getModel("label.userRole")); roles.setRequired(true); AjaxButton submit = new AjaxButton("submit", ResourceUtils.getModel("button.addMemberToGroup"), this) { private static final long serialVersionUID = 1L; @Override protected void onError(AjaxRequestTarget target, Form<?> form) { target.add(feedback); } @Override protected void onSubmit(AjaxRequestTarget target, Form<?> form) { String username = usernameField.getModelObject(); GroupRole role = roles.getModelObject(); if (validateForm(username, groupId)) { Person person = personFacade.getPerson(username); ResearchGroupMembershipId id = new ResearchGroupMembershipId(person.getPersonId(), groupId); ResearchGroupMembership membership = new ResearchGroupMembership(); membership.setId(id); membership.setAuthority(role.name()); facade.createMemberhip(membership); setResponsePage(ListOfMembersGroupPage.class, PageParametersUtils.getDefaultPageParameters(groupId)); } target.add(feedback); } }; add(submit, usernameField, roles); } private boolean validateForm(String username, int groupId) { if (!personFacade.usernameExists(username)) { error(ResourceUtils.getString("invalid.userNameDoesNotExist")); return false; } else if (personFacade.userNameInGroup(username, groupId)) { error(ResourceUtils.getString("invalid.userNameAlreadyInGroup")); return false; } return true; } } }