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/*
* Wireless Host Monitor
*
* Copyright (C) 2003, Jonathan Sevy <jsevy@mcs.drexel.edu>
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
package airporthostmon;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
/**
* Handles display and updating of port mapping information.
*/
public class KnownHostTable extends JPanel
{
private Vector displayVector;
private JTable table;
private AbstractTableModel tableModel;
private JScrollPane scrollPane;
/**
* Table model which maintains list of name - mac address pairs.
*/
private class KnownHostTableModel extends AbstractTableModel
{
public int getColumnCount()
{
return 2;
}
public int getRowCount()
{
return displayVector.size() + 1;
}
public boolean isCellEditable(int row, int col)
{
// allow first empty row to be editted
if (row <= displayVector.size())
return true;
else
return false;
}
public String getColumnName(int col)
{
switch (col)
{
case 0:
return "Name";
case 1:
return "MAC address";
default:
return "";
}
}
public Object getValueAt(int row, int col)
{
if (row < displayVector.size())
{
String[] hostInfo = (String[])displayVector.elementAt(row);
switch (col)
{
case 0:
return hostInfo[0]; // name
case 1:
return hostInfo[1]; // MAC address
default:
return "";
}
}
else
return "";
}
public void setValueAt(Object newValue, int row, int col)
{
// do nothing if row is bigger than vector size
if (row > displayVector.size())
return;
if (newValue instanceof String)
{
if (row < displayVector.size())
{
String[] hostInfo = (String[])displayVector.elementAt(row);
hostInfo[col] = (String)newValue;
}
else
{
String[] hostInfo = {"",""};
hostInfo[col] = (String)newValue;
displayVector.insertElementAt(hostInfo, displayVector.size());
}
}
}
}
/**
* Create new empty table
*/
public KnownHostTable()
{
displayVector = new Vector();
table = new JTable();
tableModel = new KnownHostTableModel();
table.setModel(tableModel);
table.setPreferredScrollableViewportSize(new Dimension(300,300));
scrollPane = new JScrollPane(table);
setUpDisplay();
}
/**
* Create new table based on data in config file.
*/
public KnownHostTable(TreeMap knownHostTreeMap)
{
displayVector = new Vector();
Collection knownHostCollection = knownHostTreeMap.values();
Iterator iterator = knownHostCollection.iterator();
while (iterator.hasNext())
{
KnownHostInfo knownHostInfo = (KnownHostInfo)iterator.next();
String[] hostInfo = {knownHostInfo.name, knownHostInfo.macAddress.toString()};
displayVector.add(hostInfo);
}
table = new JTable();
tableModel = new KnownHostTableModel();
table.setModel(tableModel);
table.setPreferredScrollableViewportSize(new Dimension(300,300));
scrollPane = new JScrollPane(table);
setUpDisplay();
}
private void setUpDisplay()
{
GridBagLayout theLayout = new GridBagLayout();
this.setLayout(theLayout);
GridBagConstraints c = new GridBagConstraints();
c.gridwidth = 1;
c.gridheight = 1;
c.fill = GridBagConstraints.BOTH;
c.ipadx = 0;
c.ipady = 0;
Insets theMargin = new Insets(2,2,2,2);
c.insets = theMargin;
c.anchor = GridBagConstraints.CENTER;
c.weightx = .5;
c.weighty = .5;
c.gridx = 1;
c.gridy = 1;
theLayout.setConstraints(scrollPane, c);
this.add(scrollPane);
}
public synchronized void setInfo(Vector knownHostVector)
{
displayVector = new Vector();
for (int i = 0; i < knownHostVector.size(); i++)
{
KnownHostInfo knownHostInfo = (KnownHostInfo)knownHostVector.elementAt(i);
String[] hostInfo = {knownHostInfo.name, knownHostInfo.macAddress.toString()};
displayVector.add(hostInfo);
}
tableModel.fireTableDataChanged();
}
public synchronized void addHost(KnownHostInfo knownHostInfo)
{
String newMacAddressString = knownHostInfo.macAddress.toString().trim();
String newName = knownHostInfo.name;
// see if MAC address already in list
for (int i = 0; i < displayVector.size(); i++)
{
String[] hostInfo = (String[])displayVector.elementAt(i);
String name = hostInfo[0];
String macAddressString = hostInfo[1].trim();
// if MAC address equals that we're adding, return
if (macAddressString.equals(newMacAddressString))
return;
}
// didn't find it; add new info to table
String[] newHostInfo = {newName, newMacAddressString};
displayVector.add(newHostInfo);
tableModel.fireTableDataChanged();
}
public synchronized TreeMap getKnownHostTreeMap()
throws ValueFormatException
{
// stop any in-progress editing operations
// first, record changes if cell currently being edited
TableCellEditor editor = table.getCellEditor();
if(editor != null)
editor.stopCellEditing();
// try to create a Vector of KnownHostInfo objects; this could throw
// a ValueFormatException if there's an invalid MAC address
TreeMap knownHostTreeMap = new TreeMap();
int i = 0;
try
{
for (i = 0; i < displayVector.size(); i++)
{
String[] hostInfo = (String[])displayVector.elementAt(i);
String name = hostInfo[0];
String macAddressString = hostInfo[1].trim();
// if MAC address string is empty after trimming, just continue
if (macAddressString.equals(""))
continue;
MacAddress macAddress = new MacAddress(macAddressString);
// throw exception if duplicate entry
if (knownHostTreeMap.containsKey(macAddress))
throw new ValueFormatException("Duplicate entry for MAC address " + hostInfo[1]);
knownHostTreeMap.put(macAddress, new KnownHostInfo(name, macAddress));
}
}
catch(ValueFormatException e)
{
// set the editing to the mac address in the row that caused the problem
//table.editCellAt(i,1);
// rethrow the exception so can report it
throw e;
}
return knownHostTreeMap;
}
public void setColumnPreferredWidths(JTable table)
{
TableModel tableModel = table.getModel();
TableColumnModel tableColumnModel = table.getColumnModel();
for (int i = 0; i < tableModel.getColumnCount(); i++)
{
int stringSize = tableModel.getColumnName(i).length();
tableColumnModel.getColumn(i).setPreferredWidth(stringSize*20);
}
}
}
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