Java tutorial
/******************************************************************************* * This file is part of OpenNMS(R). * * Copyright (C) 2016 The OpenNMS Group, Inc. * OpenNMS(R) is Copyright (C) 1999-2016 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.topology.app.internal.ui.info; import static org.opennms.netmgt.vaadin.core.UIHelper.createButton; import static org.opennms.netmgt.vaadin.core.UIHelper.createLabel; import org.opennms.features.topology.api.GraphContainer; import org.opennms.features.topology.api.info.VertexInfoPanelItemProvider; import org.opennms.features.topology.api.info.item.DefaultInfoPanelItem; import org.opennms.features.topology.api.info.item.InfoPanelItem; import org.opennms.features.topology.api.topo.AbstractVertex; import org.opennms.features.topology.api.topo.VertexRef; import org.opennms.features.topology.app.internal.ui.NodeInfoWindow; import org.opennms.netmgt.dao.api.NodeDao; import org.opennms.netmgt.model.OnmsNode; import com.google.common.base.Preconditions; import com.google.common.base.Strings; import com.vaadin.ui.Button; import com.vaadin.ui.Component; import com.vaadin.ui.FormLayout; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.themes.BaseTheme; public class NodeInfoPanelItemProvider extends VertexInfoPanelItemProvider { private final NodeDao nodeDao; public NodeInfoPanelItemProvider(NodeDao nodeDao) { this.nodeDao = nodeDao; } private Component createComponent(AbstractVertex ref) { Preconditions.checkState(ref.getNodeID() != null, "no Node ID defined."); OnmsNode node = nodeDao.get(ref.getNodeID()); FormLayout formLayout = new FormLayout(); formLayout.setSpacing(false); formLayout.setMargin(false); formLayout.addComponent(createLabel("Node ID", "" + node.getId())); final HorizontalLayout nodeButtonLayout = new HorizontalLayout(); Button nodeButton = createButton(node.getLabel(), null, null, event -> new NodeInfoWindow(ref.getNodeID()).open()); nodeButton.setStyleName(BaseTheme.BUTTON_LINK); nodeButtonLayout.addComponent(nodeButton); nodeButtonLayout.setCaption("Node Label"); formLayout.addComponent(nodeButtonLayout); if (!Strings.isNullOrEmpty(node.getSysObjectId())) { formLayout.addComponent(createLabel("Enterprise OID", node.getSysObjectId())); } return formLayout; } @Override protected boolean contributeTo(VertexRef ref, GraphContainer container) { return ref instanceof AbstractVertex && ((AbstractVertex) ref).getNodeID() != null; } @Override protected InfoPanelItem createInfoPanelItem(VertexRef ref, GraphContainer graphContainer) { return new DefaultInfoPanelItem().withOrder(-500).withTitle("Node Details") .withComponent(createComponent((AbstractVertex) ref)); } }