Java tutorial
/** * This file Copyright (c) 2012-2015 Magnolia International * Ltd. (http://www.magnolia-cms.com). All rights reserved. * * * This file is dual-licensed under both the Magnolia * Network Agreement and the GNU General Public License. * You may elect to use one or the other of these licenses. * * This file is distributed in the hope that it will be * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the * implied warranty of MERCHANTABILITY or FITNESS FOR A * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT. * Redistribution, except as permitted by whichever of the GPL * or MNA you select, is prohibited. * * 1. For the GPL license (GPL), you can redistribute and/or * modify this file under the terms of the GNU General * Public License, Version 3, as published by the Free Software * Foundation. You should have received a copy of the GNU * General Public License, Version 3 along with this program; * if not, write to the Free Software Foundation, Inc., 51 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * 2. For the Magnolia Network Agreement (MNA), this file * and the accompanying materials are made available under the * terms of the MNA which accompanies this distribution, and * is available at http://www.magnolia-cms.com/mna.html * * Any modifications to this file must keep this entire header * intact. * */ package info.magnolia.security.app.dialog.field; import info.magnolia.cms.util.QueryUtil; import info.magnolia.jcr.iterator.FilteringPropertyIterator; import info.magnolia.jcr.predicate.JCRMgnlPropertyHidingPredicate; import info.magnolia.jcr.util.NodeTypes; import info.magnolia.objectfactory.ComponentProvider; import info.magnolia.repository.RepositoryConstants; import info.magnolia.ui.form.field.definition.SelectFieldOptionDefinition; import info.magnolia.ui.form.field.factory.TwinColSelectFieldFactory; import info.magnolia.ui.form.field.transformer.Transformer; import info.magnolia.ui.vaadin.integration.jcr.JcrNodeAdapter; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; import javax.inject.Inject; import javax.jcr.Node; import javax.jcr.NodeIterator; import javax.jcr.Property; import javax.jcr.PropertyIterator; import javax.jcr.RepositoryException; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.vaadin.data.Item; import com.vaadin.ui.AbstractSelect; import com.vaadin.ui.TwinColSelect; /** * GUI builder for the Role Management field. */ public class RoleManagementFieldFactory extends TwinColSelectFieldFactory<RoleManagementFieldDefinition> { /** * Internal bean to represent basic role data. */ private static class Role { public String name; public String uuid; public Role(String name, String uuid) { this.name = name; this.uuid = uuid; } } private static final Logger log = LoggerFactory.getLogger(RoleManagementFieldFactory.class); private ComponentProvider componentProvider; @Inject public RoleManagementFieldFactory(RoleManagementFieldDefinition definition, Item relatedFieldItem, ComponentProvider componentProvider) { super(definition, relatedFieldItem, componentProvider); definition.setOptions(getSelectFieldOptionDefinition()); this.componentProvider = componentProvider; } @Override protected AbstractSelect createFieldComponent() { super.createFieldComponent(); select.setMultiSelect(true); select.setNullSelectionAllowed(true); return select; } @Override protected AbstractSelect createSelectionField() { return new TwinColSelect(); } /** * Returns the available roles with those already assigned marked selected, according to the current node. */ @Override public List<SelectFieldOptionDefinition> getSelectFieldOptionDefinition() { List<SelectFieldOptionDefinition> options = new ArrayList<SelectFieldOptionDefinition>(); List<Role> allRoles = getAllRoles(); // name,uuid Set<String> assignedRoles = getAssignedRoles(); for (Role role : allRoles) { SelectFieldOptionDefinition option = new SelectFieldOptionDefinition(); option.setValue(role.uuid); option.setLabel(role.name); if (assignedRoles.contains(role.uuid)) { option.setSelected(true); } options.add(option); } return options; } private List<Role> getAllRoles() { List<Role> roles = new ArrayList<Role>(); try { NodeIterator ni = QueryUtil.search(RepositoryConstants.USER_ROLES, "SELECT * FROM [" + NodeTypes.Role.NAME + "] ORDER BY name()"); while (ni.hasNext()) { Node n = ni.nextNode(); String name = n.getName(); String uuid = n.getIdentifier(); roles.add(new Role(name, uuid)); } } catch (RepositoryException e) { log.error("Cannot read roles from the [" + RepositoryConstants.USER_ROLES + "] workspace.", e); } return roles; } private Set<String> getAssignedRoles() { Set<String> roles = new HashSet<String>(); try { Node mainNode = ((JcrNodeAdapter) item).getJcrItem(); if (mainNode.hasNode("roles")) { Node rolesNode = mainNode.getNode("roles"); if (rolesNode == null) { // shouldn't happen, just in case return roles; } for (PropertyIterator iter = new FilteringPropertyIterator(rolesNode.getProperties(), new JCRMgnlPropertyHidingPredicate()); iter.hasNext();) { Property p = iter.nextProperty(); roles.add(p.getString()); } } } catch (RepositoryException re) { log.error("Cannot read assigned roles.", re); } return roles; } /** * Create a new Instance of {@link Transformer}. */ @Override protected Transformer<?> initializeTransformer(Class<? extends Transformer<?>> transformerClass) { return this.componentProvider.newInstance(transformerClass, item, definition, HashSet.class, getAssignedRoles(), "roles"); } }