Java tutorial
/******************************************************************************* * This file is part of OpenNMS(R). * * Copyright (C) 2012 The OpenNMS Group, Inc. * OpenNMS(R) is Copyright (C) 1999-2012 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 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 General Public License for more details. * * You should have received a copy of the GNU 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.netutils.internal.operations; import java.net.URL; import java.util.List; import org.opennms.features.topology.api.AbstractOperation; import org.opennms.features.topology.api.OperationContext; import org.opennms.features.topology.api.OperationContext.DisplayLocation; import org.opennms.features.topology.api.topo.VertexRef; import org.opennms.features.topology.netutils.internal.Node; import org.opennms.features.topology.netutils.internal.ResourceGraphsWindow; import com.vaadin.server.Page; public class ResourceGraphsOperation extends AbstractOperation { private String m_resourceGraphListURL; private String m_resourceGraphNodeURL; @Override public Undoer execute(final List<VertexRef> targets, final OperationContext operationContext) { String label = ""; int nodeID = -1; try { if (targets != null) { for (final VertexRef target : targets) { final String labelValue = getLabelValue(operationContext, target); final Integer nodeValue = getNodeIdValue(operationContext, target); if (nodeValue != null && nodeValue > 0) { label = labelValue == null ? "" : labelValue; nodeID = nodeValue.intValue(); } } } final Node node = new Node(nodeID, null, label); final URL baseURL = Page.getCurrent().getLocation().toURL(); final URL nodeURL; if (node.getNodeID() >= 0) { nodeURL = new URL(baseURL, getResourceGraphNodeURL() + "[" + node.getNodeID() + "]"); } else { nodeURL = new URL(baseURL, getResourceGraphListURL()); } operationContext.getMainWindow().addWindow(new ResourceGraphsWindow(node, nodeURL)); } catch (final Exception e) { e.printStackTrace(); } return null; } @Override public boolean display(final List<VertexRef> targets, final OperationContext operationContext) { if (operationContext.getDisplayLocation() == DisplayLocation.MENUBAR) { return true; } else if (targets != null && targets.size() > 0 && targets.get(0) != null) { return true; } else { return false; } } @Override public String getId() { return "contextResourceGraphs"; } public String getResourceGraphListURL() { return m_resourceGraphListURL; } public void setResourceGraphListURL(String resourceGraphListURL) { this.m_resourceGraphListURL = resourceGraphListURL; } public String getResourceGraphNodeURL() { return m_resourceGraphNodeURL; } public void setResourceGraphNodeURL(final String resourceGraphNodeURL) { m_resourceGraphNodeURL = resourceGraphNodeURL; } }