Java tutorial
/******************************************************************************* * This file is part of OpenNMS(R). * * Copyright (C) 2011-2014 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.ipv6.summary.gui.client; import java.util.List; import com.google.gwt.core.client.GWT; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.shared.EventBus; import com.google.gwt.event.shared.GwtEvent; import com.google.gwt.event.shared.HandlerRegistration; import com.google.gwt.event.shared.HasHandlers; import com.google.gwt.event.shared.SimpleEventBus; import com.google.gwt.http.client.Request; import com.google.gwt.http.client.RequestBuilder; import com.google.gwt.http.client.RequestCallback; import com.google.gwt.http.client.RequestException; import com.google.gwt.http.client.Response; import com.google.gwt.http.client.URL; import com.google.gwt.uibinder.client.UiBinder; import com.google.gwt.uibinder.client.UiField; import com.google.gwt.uibinder.client.UiHandler; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.Anchor; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.ListBox; import com.google.gwt.user.client.ui.RadioButton; import com.google.gwt.user.client.ui.Widget; public class Navigation extends Composite implements HasHandlers { private static NavigationUiBinder uiBinder = GWT.create(NavigationUiBinder.class); private EventBus m_handlerManager; @UiField RadioButton m_allLocations; @UiField RadioButton m_singleLocation; @UiField ListBox m_locationList; @UiField RadioButton m_allHosts; @UiField RadioButton m_singleHost; @UiField ListBox m_hostList; @UiField Anchor m_link; interface NavigationUiBinder extends UiBinder<Widget, Navigation> { } public Navigation() { initWidget(uiBinder.createAndBindUi(this)); m_handlerManager = new SimpleEventBus(); m_allHosts.setValue(true); m_allHosts.setVisible(false); m_singleHost.setVisible(false); m_hostList.setVisible(false); m_allLocations.setValue(true); m_allLocations.setVisible(false); m_singleLocation.setVisible(false); m_locationList.setVisible(false); } @Override public void fireEvent(GwtEvent<?> event) { m_handlerManager.fireEvent(event); } public HandlerRegistration addLocationUpdateEventHandler(LocationUpdateEventHandler handler) { return m_handlerManager.addHandler(LocationUpdateEvent.TYPE, handler); } public HandlerRegistration addHostUpdateEventHandler(HostUpdateEventHandler handler) { return m_handlerManager.addHandler(HostUpdateEvent.TYPE, handler); } @UiHandler("m_allLocations") public void allLocationsClick(ClickEvent event) { hideLocationSelection(); fireEvent(new LocationUpdateEvent("All")); } @UiHandler("m_singleLocation") public void singleLocationClick(ClickEvent event) { showLocationSelection(); fireEvent(new LocationUpdateEvent(m_locationList.getItemText(m_locationList.getSelectedIndex()))); } @UiHandler("m_locationList") public void locationListClick(ClickEvent event) { fireEvent(new LocationUpdateEvent(m_locationList.getItemText(m_locationList.getSelectedIndex()))); } @UiHandler("m_allHosts") public void allHostsClick(ClickEvent event) { hideHostSelection(); fireEvent(new HostUpdateEvent("All")); } @UiHandler("m_singleHost") public void singleHostClick(ClickEvent event) { showHostSelection(); fireEvent(new HostUpdateEvent(m_hostList.getItemText(m_hostList.getSelectedIndex()))); } @UiHandler("m_hostList") public void hostListClick(ClickEvent event) { fireEvent(new HostUpdateEvent(m_hostList.getItemText(m_hostList.getSelectedIndex()))); } @UiHandler("m_link") public void linkTopOpenNMSClicked(ClickEvent event) { StringBuffer postData = new StringBuffer(); // note param pairs are separated by a '&' // and each key-value pair is separated by a '=' postData.append(URL.encode("j_username")).append("=").append(URL.encode("ipv6")); postData.append("&"); postData.append(URL.encode("j_password")).append("=").append(URL.encode("ipv6")); postData.append("&"); postData.append(URL.encode("Login")).append("=").append(URL.encode("login")); RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, URL.encode("/opennms/j_spring_security_check")); builder.setHeader("Content-type", "application/x-www-form-urlencoded"); try { builder.sendRequest(postData.toString(), new RequestCallback() { @Override public void onResponseReceived(Request request, Response response) { if (response.getStatusCode() == 200) { Window.open("/opennms/index.jsp", "_target", null); } else { Window.alert("Failed to login"); } } @Override public void onError(Request request, Throwable exception) { Window.alert("Problem Logging in"); } }); } catch (RequestException e) { // TODO Auto-generated catch block e.printStackTrace(); } //Window.alert("Cliking link to OpenNMS"); } public void loadLocations(List<String> locations) { m_locationList.clear(); for (String location : locations) { m_locationList.addItem(location); } } public void loadHosts(List<String> hosts) { m_hostList.clear(); for (String host : hosts) { m_hostList.addItem(host); } } private void showHostSelection() { m_hostList.setVisible(true); } private void hideLocationSelection() { m_locationList.setVisible(false); } private void showLocationSelection() { m_locationList.setVisible(true); } private void hideHostSelection() { m_hostList.setVisible(false); } }