Java tutorial
/******************************************************************************* * This file is part of OpenNMS(R). * * Copyright (C) 2007-2014 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.dashboard.client; import com.google.gwt.core.client.EntryPoint; import com.google.gwt.core.client.GWT; import com.google.gwt.user.client.rpc.ServiceDefTarget; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.user.client.ui.HTMLPanel; import com.google.gwt.user.client.ui.RootPanel; import com.google.gwt.user.client.ui.Widget; import org.gwtbootstrap3.client.ui.Modal; import org.gwtbootstrap3.client.ui.ModalBody; import org.gwtbootstrap3.client.ui.ModalFooter; import org.gwtbootstrap3.client.ui.ModalHeader; import org.gwtbootstrap3.client.ui.gwt.FlowPanel; /** * <p>Dashboard class.</p> * * @author <a href="mailto:brozow@opennms.org">Mathew Brozowski</a> * @author <a href="mailto:dj@opennms.org">DJ Gregor</a> * @author <a href="mailto:brozow@opennms.org">Mathew Brozowski</a> * @author <a href="mailto:dj@opennms.org">DJ Gregor</a> * @version $Id: $ * @since 1.8.1 */ public class Dashboard implements EntryPoint, ErrorHandler { Dashlet m_surveillance; AlarmDashlet m_alarms; OutageDashlet m_outages; NodeStatusDashlet m_nodeStatus; NotificationDashlet m_notifications; GraphDashlet m_graphs; private SurveillanceServiceAsync m_surveillanceService; private Modal m_modal; private FlowPanel m_modalContent = new FlowPanel(); /** * <p>onModuleLoad</p> */ @Override public void onModuleLoad() { add(createSurveillanceDashlet(), "surveillanceView"); add(createAlarmDashlet(), "alarms"); add(createGraphDashlet(), "graphs"); add(createNotificationDashlet(), "notifications"); //add(createOutageDashlet(), "outages"); add(createNodeStatusDashlet(), "nodeStatus"); setSurveillanceSet(SurveillanceSet.DEFAULT); addModal(); } private void addModal() { ModalHeader modalHeader = new ModalHeader(); modalHeader.setTitle("Error Occurred"); org.gwtbootstrap3.client.ui.Button okBtn = new org.gwtbootstrap3.client.ui.Button("OK"); okBtn.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { m_modal.hide(); } }); ModalBody modalBody = new ModalBody(); modalBody.add(m_modalContent); ModalFooter modalFooter = new ModalFooter(); modalFooter.add(okBtn); m_modal = new Modal(); m_modal.add(modalHeader); m_modal.add(modalBody); m_modal.add(modalFooter); RootPanel.get().add(m_modal); } private GraphDashlet createGraphDashlet() { m_graphs = new GraphDashlet(this); m_graphs.setSurveillanceService(getSurveillanceService()); return m_graphs; } private NotificationDashlet createNotificationDashlet() { m_notifications = new NotificationDashlet(this); m_notifications.setSurveillanceService(getSurveillanceService()); return m_notifications; } // private OutageDashlet createOutageDashlet() { // m_outages = new OutageDashlet(this); // return m_outages; // } private AlarmDashlet createAlarmDashlet() { m_alarms = new AlarmDashlet(this); m_alarms.setSurveillanceService(getSurveillanceService()); m_alarms.setSurveillanceSet(SurveillanceSet.DEFAULT); return m_alarms; } private Dashlet createSurveillanceDashlet() { SurveillanceDashlet surveillance = new SurveillanceDashlet(this); SurveillanceListener listener = new SurveillanceListener() { @Override public void onAllClicked(Dashlet viewer) { setSurveillanceSet(SurveillanceSet.DEFAULT); } @Override public void onIntersectionClicked(Dashlet viewer, SurveillanceIntersection intersection) { setSurveillanceSet(intersection); } @Override public void onSurveillanceGroupClicked(Dashlet viewer, SurveillanceGroup group) { setSurveillanceSet(group); } }; surveillance.addSurveillanceViewListener(listener); final SurveillanceServiceAsync svc = getSurveillanceService(); surveillance.setSurveillanceService(svc); m_surveillance = surveillance; return m_surveillance; } private SurveillanceServiceAsync getSurveillanceService() { if (m_surveillanceService == null) { String serviceEntryPoint = GWT.getHostPageBaseURL() + "surveillanceService.gwt"; // define the service you want to call final SurveillanceServiceAsync svc = (SurveillanceServiceAsync) GWT.create(SurveillanceService.class); ServiceDefTarget endpoint = (ServiceDefTarget) svc; endpoint.setServiceEntryPoint(serviceEntryPoint); m_surveillanceService = svc; } return m_surveillanceService; } private NodeStatusDashlet createNodeStatusDashlet() { m_nodeStatus = new NodeStatusDashlet(this); m_nodeStatus.setSurveillanceService(getSurveillanceService()); m_nodeStatus.setSurveillanceSet(SurveillanceSet.DEFAULT); return m_nodeStatus; } /** * <p>add</p> * * @param widget a {@link com.google.gwt.user.client.ui.Widget} object. * @param elementId a {@link java.lang.String} object. */ public void add(Widget widget, String elementId) { RootPanel panel = RootPanel.get(elementId); if (panel != null) { panel.add(widget); } } /** {@inheritDoc} */ @Override public void error(Throwable e) { error(e.toString()); } /** * <p>error</p> * * @param err a {@link java.lang.String} object. */ public void error(String err) { m_modalContent.clear(); HTMLPanel html = new HTMLPanel(err); html.setStyleName("Message"); m_modalContent.add(html); m_modal.show(); } private void setSurveillanceSet(SurveillanceSet set) { m_surveillance.setSurveillanceSet(set); m_alarms.setSurveillanceSet(set); m_graphs.setSurveillanceSet(set); m_notifications.setSurveillanceSet(set); m_nodeStatus.setSurveillanceSet(set); } }