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.vaadin.addons.sitekit.module.audit.view; import com.vaadin.ui.*; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Button.ClickListener; import org.joda.time.DateTime; import org.joda.time.ReadableDuration; import org.vaadin.addons.lazyquerycontainer.EntityContainer; import org.vaadin.addons.sitekit.flow.AbstractFlowlet; import org.vaadin.addons.sitekit.grid.FieldDescriptor; import org.vaadin.addons.sitekit.grid.FieldSetDescriptorRegister; import org.vaadin.addons.sitekit.grid.FilterDescriptor; import org.vaadin.addons.sitekit.grid.Grid; import org.vaadin.addons.sitekit.grid.field.DatePartField; import org.vaadin.addons.sitekit.grid.field.TimestampField; import org.vaadin.addons.sitekit.module.audit.model.AuditLogEntry; import org.vaadin.addons.sitekit.util.ContainerUtil; import javax.persistence.EntityManager; import java.util.ArrayList; import java.util.Date; import java.util.List; /** * AuditLogEntry list flow. * * @author Tommi S.E. Laukkanen */ public final class AuditLogFlowlet extends AbstractFlowlet { /** Serial version UID. */ private static final long serialVersionUID = 1L; /** The entity container. */ private EntityContainer<AuditLogEntry> entityContainer; /** The content grid. */ private Grid entityGrid; @Override public String getFlowletKey() { return "audit"; } @Override public boolean isDirty() { return false; } @Override public boolean isValid() { return true; } @Override public void initialize() { // Get entity manager from site context and prepare container. final EntityManager entityManager = getSite().getSiteContext().getObject(EntityManager.class); entityContainer = new EntityContainer<AuditLogEntry>(entityManager, true, false, false, AuditLogEntry.class, 1000, new String[] { "created" }, new boolean[] { false }, "auditLogEntryId"); // Get descriptors and set container properties. final List<FilterDescriptor> filterDescriptors = new ArrayList<FilterDescriptor>(); filterDescriptors.add(new FilterDescriptor("startTime", "created", getSite().localize("filter-start-time"), new TimestampField(), 130, ">=", Date.class, new DateTime().withTimeAtStartOfDay().toDate())); filterDescriptors.add(new FilterDescriptor("endTime", "created", getSite().localize("filter-end-time"), new TimestampField(), 130, "<=", Date.class, new DateTime().withTimeAtStartOfDay().plusDays(1).toDate())); final List<FieldDescriptor> fieldDescriptors = FieldSetDescriptorRegister .getFieldSetDescriptor(AuditLogEntry.class).getFieldDescriptors(); ContainerUtil.addContainerProperties(entityContainer, fieldDescriptors); // Initialize layout 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); // Initialize grid entityGrid = new Grid(new Table(), entityContainer); entityGrid.setFields(fieldDescriptors); entityGrid.setFilters(filterDescriptors); gridLayout.addComponent(entityGrid, 0, 1); final Button viewButton = getSite().getButton("view"); buttonLayout.addComponent(viewButton); viewButton.addClickListener(new ClickListener() { /** Serial version UID. */ private static final long serialVersionUID = 1L; @Override public void buttonClick(final ClickEvent event) { final AuditLogEntry entity = entityContainer.getEntity(entityGrid.getSelectedItemId()); final AuditLogEntryFlowlet contentView = getFlow().forward(AuditLogEntryFlowlet.class); contentView.edit(entity, false); } }); } @Override public void enter() { //final Company company = getSite().getSiteContext().getObject(Company.class); entityContainer.removeDefaultFilters(); //entityContainer.addDefaultFilter(new Compare.Equal("owner.companyId", company.getCompanyId())); entityGrid.refresh(); } }