/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hms.common.util;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.GridLayout;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Vector;
import javax.jmdns.JmDNS;
import javax.jmdns.ServiceEvent;
import javax.jmdns.ServiceInfo;
import javax.jmdns.ServiceListener;
import javax.jmdns.ServiceTypeListener;
import javax.swing.DefaultListModel;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.ListSelectionModel;
import javax.swing.SwingUtilities;
import javax.swing.border.EmptyBorder;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.AbstractTableModel;
/**
* User Interface for browsing JmDNS services.
*
* @author Arthur van Hoff, Werner Randelshofer
* @version %I%, %G%
*/
public class ServiceDiscovery extends JFrame implements ServiceListener, ServiceTypeListener, ListSelectionListener {
JmDNS jmdns;
Vector headers;
String type;
DefaultListModel types;
JList typeList;
DefaultListModel services;
JList serviceList;
JTextArea info;
ServiceDiscovery(JmDNS jmdns) throws IOException {
super("JmDNS Browser");
this.jmdns = jmdns;
Color bg = new Color(230, 230, 230);
EmptyBorder border = new EmptyBorder(5, 5, 5, 5);
Container content = getContentPane();
content.setLayout(new GridLayout(1, 3));
types = new DefaultListModel();
typeList = new JList(types);
typeList.setBorder(border);
typeList.setBackground(bg);
typeList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
typeList.addListSelectionListener(this);
JPanel typePanel = new JPanel();
typePanel.setLayout(new BorderLayout());
typePanel.add("North", new JLabel("Types"));
typePanel.add("Center", new JScrollPane(typeList, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED));
content.add(typePanel);
services = new DefaultListModel();
serviceList = new JList(services);
serviceList.setBorder(border);
serviceList.setBackground(bg);
serviceList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
serviceList.addListSelectionListener(this);
JPanel servicePanel = new JPanel();
servicePanel.setLayout(new BorderLayout());
servicePanel.add("North", new JLabel("Services"));
servicePanel.add("Center", new JScrollPane(serviceList, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED));
content.add(servicePanel);
info = new JTextArea();
info.setBorder(border);
info.setBackground(bg);
info.setEditable(false);
info.setLineWrap(true);
JPanel infoPanel = new JPanel();
infoPanel.setLayout(new BorderLayout());
infoPanel.add("North", new JLabel("Details"));
infoPanel.add("Center", new JScrollPane(info, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED));
content.add(infoPanel);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocation(100, 100);
setSize(600, 400);
jmdns.addServiceTypeListener(this);
// register some well known types
String list[] = new String[] {
"_http._tcp.local.",
"_ftp._tcp.local.",
"_tftp._tcp.local.",
"_ssh._tcp.local.",
"_smb._tcp.local.",
"_printer._tcp.local.",
"_airport._tcp.local.",
"_afpovertcp._tcp.local.",
"_ichat._tcp.local.",
"_eppc._tcp.local.",
"_presence._tcp.local.",
"_zookeeper._tcp.local.",
"_test._tcp.local."
};
for (int i = 0 ; i < list.length ; i++) {
jmdns.registerServiceType(list[i]);
}
show();
}
/**
* Add a service.
*/
public void serviceAdded(ServiceEvent event) {
final String name = event.getName();
System.out.println("ADD: " + name);
SwingUtilities.invokeLater(new Runnable() {
public void run() { insertSorted(services, name); }
});
}
/**
* Remove a service.
*/
public void serviceRemoved(ServiceEvent event) {
final String name = event.getName();
System.out.println("REMOVE: " + name);
SwingUtilities.invokeLater(new Runnable() {
public void run() { services.removeElement(name); }
});
}
/**
* A new service type was <discovered.
*/
public void serviceTypeAdded(ServiceEvent event) {
final String type = event.getType();
System.out.println("TYPE: " + type);
SwingUtilities.invokeLater(new Runnable() {
public void run() { insertSorted(types, type); }
});
}
void insertSorted(DefaultListModel model, String value) {
for (int i = 0, n = model.getSize() ; i < n ; i++) {
if (value.compareToIgnoreCase((String)model.elementAt(i)) < 0) {
model.insertElementAt(value, i);
return;
}
}
model.addElement(value);
}
/**
* Resolve a service.
*/
public void serviceResolved(ServiceEvent event) {
String name = event.getName();
String type = event.getType();
ServiceInfo info = event.getInfo();
if (name.equals(serviceList.getSelectedValue())) {
if (info == null) {
this.info.setText("service not found");
} else {
StringBuffer buf = new StringBuffer();
buf.append(name);
buf.append('.');
buf.append(type);
buf.append('\n');
buf.append(info.getServer());
buf.append(':');
buf.append(info.getPort());
buf.append('\n');
buf.append(info.getAddress());
buf.append(':');
buf.append(info.getPort());
buf.append('\n');
for (Enumeration names = info.getPropertyNames() ; names.hasMoreElements() ; ) {
String prop = (String)names.nextElement();
buf.append(prop);
buf.append('=');
buf.append(info.getPropertyString(prop));
buf.append('\n');
}
this.info.setText(buf.toString());
}
}
}
/**
* List selection changed.
*/
public void valueChanged(ListSelectionEvent e) {
if (!e.getValueIsAdjusting()) {
if (e.getSource() == typeList) {
type = (String)typeList.getSelectedValue();
jmdns.removeServiceListener(type, this);
services.setSize(0);
info.setText("");
if (type != null) {
jmdns.addServiceListener(type, this);
}
} else if (e.getSource() == serviceList) {
String name = (String)serviceList.getSelectedValue();
if (name == null) {
info.setText("");
} else {
System.out.println(this+" valueChanged() type:"+type+" name:"+name);
System.out.flush();
ServiceInfo service = jmdns.getServiceInfo(type, name);
if (service == null) {
info.setText("service not found");
} else {
jmdns.requestServiceInfo(type, name);
}
}
}
}
}
/**
* Table data.
*/
class ServiceTableModel extends AbstractTableModel {
public String getColumnName(int column) {
switch (column) {
case 0: return "service";
case 1: return "address";
case 2: return "port";
case 3: return "text";
}
return null;
}
public int getColumnCount() {
return 1;
}
public int getRowCount() {
return services.size();
}
public Object getValueAt(int row, int col) {
return services.elementAt(row);
}
}
public String toString() {
return "RVBROWSER";
}
/**
* Main program.
*/
public static void main(String argv[]) throws IOException {
new ServiceDiscovery(JmDNS.create());
}
@Override
public void subTypeForServiceTypeAdded(ServiceEvent arg0) {
// TODO Auto-generated method stub
}
}