Java tutorial
/** * Copyright 2013 Tommi S.E. Laukkanen * * 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.bubblecloud.ilves.ui.administrator.group; import com.vaadin.data.util.filter.Compare; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Button.ClickListener; import com.vaadin.ui.GridLayout; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Table; import org.bubblecloud.ilves.component.flow.AbstractFlowlet; import org.bubblecloud.ilves.component.grid.FieldDescriptor; import org.bubblecloud.ilves.component.grid.FilterDescriptor; import org.bubblecloud.ilves.component.grid.FormattingTable; import org.bubblecloud.ilves.component.grid.Grid; import org.bubblecloud.ilves.model.Company; import org.bubblecloud.ilves.model.Group; import org.bubblecloud.ilves.model.Privilege; import org.bubblecloud.ilves.model.User; import org.bubblecloud.ilves.security.SecurityService; import org.bubblecloud.ilves.security.UserDao; import org.bubblecloud.ilves.site.SiteFields; import org.bubblecloud.ilves.util.ContainerUtil; import org.vaadin.addons.lazyquerycontainer.EntityContainer; import javax.persistence.EntityManager; import java.util.ArrayList; import java.util.Date; import java.util.List; /** * Group list Flowlet. * * @author Tommi S.E. Laukkanen */ public final class GroupsFlowlet extends AbstractFlowlet { /** Serial version UID. */ private static final long serialVersionUID = 1L; /** The container. */ private EntityContainer<Group> container; /** The grid. */ private Grid grid; @Override public String getFlowletKey() { return "groups"; } @Override public boolean isDirty() { return false; } @Override public boolean isValid() { return true; } @Override public void initialize() { final List<FieldDescriptor> fieldDescriptors = SiteFields.getFieldDescriptors(Group.class); final List<FilterDescriptor> filterDefinitions = new ArrayList<FilterDescriptor>(); final EntityManager entityManager = getSite().getSiteContext().getObject(EntityManager.class); container = new EntityContainer<Group>(entityManager, true, false, false, Group.class, 1000, new String[] { "name" }, new boolean[] { true }, "groupId"); ContainerUtil.addContainerProperties(container, fieldDescriptors); final GridLayout gridLayout = new GridLayout(1, 2); gridLayout.setSizeFull(); gridLayout.setMargin(false); gridLayout.setSpacing(true); gridLayout.setRowExpandRatio(1, 1f); setViewContent(gridLayout); final HorizontalLayout buttonLayout = new HorizontalLayout(); buttonLayout.setSpacing(true); buttonLayout.setSizeUndefined(); gridLayout.addComponent(buttonLayout, 0, 0); final Table table = new FormattingTable(); grid = new Grid(table, container); grid.setFields(fieldDescriptors); grid.setFilters(filterDefinitions); table.setColumnCollapsed("created", true); table.setColumnCollapsed("modified", true); gridLayout.addComponent(grid, 0, 1); final Button addButton = getSite().getButton("add"); buttonLayout.addComponent(addButton); addButton.addClickListener(new ClickListener() { /** Serial version UID. */ private static final long serialVersionUID = 1L; @Override public void buttonClick(final ClickEvent event) { final Group group = new Group(); group.setCreated(new Date()); group.setModified(group.getCreated()); group.setOwner((Company) getSite().getSiteContext().getObject(Company.class)); final GroupFlowlet groupView = getFlow().forward(GroupFlowlet.class); groupView.edit(group, true); } }); final Button editButton = getSite().getButton("edit"); buttonLayout.addComponent(editButton); editButton.addClickListener(new ClickListener() { /** Serial version UID. */ private static final long serialVersionUID = 1L; @Override public void buttonClick(final ClickEvent event) { if (grid.getSelectedItemId() == null) { return; } final Group entity = container.getEntity(grid.getSelectedItemId()); final GroupFlowlet groupView = getFlow().forward(GroupFlowlet.class); groupView.edit(entity, false); } }); final Button removeButton = getSite().getButton("remove"); buttonLayout.addComponent(removeButton); removeButton.addClickListener(new ClickListener() { /** Serial version UID. */ private static final long serialVersionUID = 1L; @Override public void buttonClick(final ClickEvent event) { if (grid.getSelectedItemId() == null) { return; } final Group entity = container.getEntity(grid.getSelectedItemId()); final List<User> users = UserDao.getGroupMembers(entityManager, (Company) getSite().getSiteContext().getObject(Company.class), entity); for (final User user : users) { SecurityService.removeGroupMember(getSite().getSiteContext(), entity, user); } final List<Privilege> privileges = UserDao.getGroupPrivileges(entityManager, entity); for (final Privilege privilege : privileges) { SecurityService.removeGroupPrivilege(getSite().getSiteContext(), entity, privilege.getKey(), null, privilege.getDataId(), null); } SecurityService.removeGroup(getSite().getSiteContext(), entity); container.refresh(); } }); final Company company = getSite().getSiteContext().getObject(Company.class); container.removeDefaultFilters(); container.addDefaultFilter(new Compare.Equal("owner.companyId", company.getCompanyId())); grid.refresh(); } @Override public void enter() { container.refresh(); } }