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.dashlets; import com.vaadin.server.ExternalResource; import com.vaadin.ui.BrowserFrame; import com.vaadin.ui.Component; import com.vaadin.ui.VerticalLayout; import org.opennms.features.vaadin.dashboard.model.*; /** * This class implements a {@link Dashlet} for displaying the surveillance view page of OpenNMS. * * @author Christian Pape */ public class SurveillanceDashlet extends AbstractDashlet { private DashletComponent m_dashletComponent; /** * Constructor for instantiating new objects. * * @param dashletSpec the {@link DashletSpec} to be used */ public SurveillanceDashlet(String name, DashletSpec dashletSpec) { super(name, dashletSpec); } @Override public DashletComponent getWallboardComponent() { if (m_dashletComponent == null) { m_dashletComponent = new AbstractDashletComponent() { private VerticalLayout m_verticalLayout = new VerticalLayout(); { m_verticalLayout.setCaption(getName()); m_verticalLayout.setSizeFull(); } @Override public void refresh() { m_verticalLayout.removeAllComponents(); String viewName = "default"; if (getDashletSpec().getParameters().containsKey("viewName")) { viewName = getDashletSpec().getParameters().get("viewName"); } /** * creating browser frame to display node-maps */ BrowserFrame browserFrame = new BrowserFrame(null, new ExternalResource( "/opennms/osgi/vaadin-surveillance-views?dashboard=false&viewName=" + viewName)); browserFrame.setSizeFull(); m_verticalLayout.addComponent(browserFrame); } @Override public Component getComponent() { return m_verticalLayout; } }; } return m_dashletComponent; } @Override public DashletComponent getDashboardComponent() { return getWallboardComponent(); } }