Java tutorial
/******************************************************************************* * This file is part of OpenNMS(R). * * Copyright (C) 2013-2014 The OpenNMS Group, Inc. * OpenNMS(R) is Copyright (C) 1999-2014 The OpenNMS Group, Inc. * * OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc. * * OpenNMS(R) is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published * by the Free Software Foundation, either version 3 of the License, * or (at your option) any later version. * * OpenNMS(R) is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with OpenNMS(R). If not, see: * http://www.gnu.org/licenses/ * * For more information contact: * OpenNMS(R) Licensing <license@opennms.org> * http://www.opennms.org/ * http://www.opennms.com/ *******************************************************************************/ package org.opennms.features.vaadin.dashboard.config.ui; import org.opennms.features.vaadin.dashboard.model.Wallboard; import com.vaadin.data.Property; import com.vaadin.data.util.BeanItemContainer; import com.vaadin.ui.Alignment; import com.vaadin.ui.Button; import com.vaadin.ui.CheckBox; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Label; import com.vaadin.ui.Table; import com.vaadin.ui.VerticalLayout; /** * This class is used to display an brief overview about existing {@link Wallboard} configurations. * * @author Christian Pape */ public class WallboardOverview extends VerticalLayout { /** * The {@link Table} this component uses to display {@link Wallboard} configurations */ private Table m_table; /** * The {@link WallboardConfigView} this component belongs to. */ private WallboardConfigView m_wallboardConfigView; /** * The {@link BeanItemContainer} this component uses for {@link Wallboard} configurations */ BeanItemContainer<Wallboard> m_beanItemContainer; /** * Constructor for creating new instances. * * @param wallboardConfigView the {@link WallboardConfigView} */ public WallboardOverview(WallboardConfigView wallboardConfigView) { /** * Setting the member fields */ this.m_wallboardConfigView = wallboardConfigView; /** * Setting up the layout component */ setSizeFull(); setMargin(true); setSpacing(true); Label label = new Label("Overview"); label.addStyleName("configuration-title"); Button button = new Button("Help"); button.setStyleName("small"); button.setDescription("Display help and usage"); button.addClickListener(new HelpClickListener(this, m_wallboardConfigView.getDashletSelector())); HorizontalLayout horizontalLayout = new HorizontalLayout(); horizontalLayout.addComponent(label); horizontalLayout.addComponent(button); horizontalLayout.setWidth(100, Unit.PERCENTAGE); horizontalLayout.setComponentAlignment(label, Alignment.MIDDLE_LEFT); horizontalLayout.setComponentAlignment(button, Alignment.MIDDLE_RIGHT); addComponent(horizontalLayout); /** * Adding the table with the required {@link Table.ColumnGenerator} objects */ m_table = new Table(); m_table.setSizeFull(); m_table.addGeneratedColumn("Edit", new Table.ColumnGenerator() { public Object generateCell(Table source, final Object itemId, Object columnId) { Button button = new Button("Edit"); button.setDescription("Edit this Ops Board configuration"); button.setStyleName("small"); button.addClickListener(new Button.ClickListener() { public void buttonClick(Button.ClickEvent clickEvent) { m_wallboardConfigView.openWallboardEditor((Wallboard) itemId); } }); return button; } }); m_table.addGeneratedColumn("Remove", new Table.ColumnGenerator() { public Object generateCell(Table source, final Object itemId, Object columnId) { Button button = new Button("Remove"); button.setDescription("Delete this Ops Board configuration"); button.setStyleName("small"); button.addClickListener(new Button.ClickListener() { public void buttonClick(Button.ClickEvent clickEvent) { m_wallboardConfigView.removeTab(((Wallboard) itemId).getTitle()); WallboardProvider.getInstance().removeWallboard((Wallboard) itemId); refreshTable(); } }); return button; } }); m_table.addGeneratedColumn("Preview", new Table.ColumnGenerator() { public Object generateCell(Table source, final Object itemId, Object columnId) { Button button = new Button("Preview"); button.setDescription("Preview this Ops Board configuration"); button.setStyleName("small"); button.addClickListener(new PreviewClickListener(WallboardOverview.this, (Wallboard) itemId)); return button; } }); m_table.addGeneratedColumn("Default", new Table.ColumnGenerator() { public Object generateCell(Table source, final Object itemId, Object columnId) { CheckBox checkBox = new CheckBox(); checkBox.setImmediate(true); checkBox.setDescription("Make this Ops Board configuration the default"); final Wallboard wallboard = m_beanItemContainer.getItem(itemId).getBean(); checkBox.setValue(wallboard.isDefault()); checkBox.addValueChangeListener(new Property.ValueChangeListener() { @Override public void valueChange(Property.ValueChangeEvent valueChangeEvent) { boolean newValue = ((Boolean) valueChangeEvent.getProperty().getValue()); if (newValue) { for (Wallboard wallboard1 : m_beanItemContainer.getItemIds()) { wallboard1.setDefault(false); } } wallboard.setDefault(newValue); m_table.refreshRowCache(); WallboardProvider.getInstance().save(); } }); return checkBox; } }); refreshTable(); /** * Adding the table */ addComponent(m_table); setExpandRatio(m_table, 1.0f); } void refreshTable() { if (m_table != null) { m_beanItemContainer = WallboardProvider.getInstance().getBeanContainer(); m_table.setContainerDataSource(m_beanItemContainer); m_table.setVisibleColumns(new Object[] { "title", "Edit", "Remove", "Preview", "Default" }); m_table.setColumnHeader("title", "Title"); m_table.sort(); m_table.refreshRowCache(); } } }