/*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* InstanceTable.java
* Copyright (C) 1999 University of Waikato, Hamilton, New Zealand
*
*/
package weka.gui.streams;
import weka.core.Instance;
import weka.core.Instances;
import java.awt.BorderLayout;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;
/**
* A bean that takes a stream of instances and displays in a table.
*
* @author Len Trigg (trigg@cs.waikato.ac.nz)
* @version $Revision: 1.5 $
*/
public class InstanceTable
extends JPanel
implements InstanceListener {
/** for serialization */
private static final long serialVersionUID = -2462533698100834803L;
private JTable m_InstanceTable;
private boolean m_Debug;
private boolean m_Clear;
private String m_UpdateString;
private Instances m_Instances;
public void inputFormat(Instances instanceInfo) {
if (m_Debug) {
System.err.println("InstanceTable::inputFormat()\n"
+ instanceInfo.toString());
}
m_Instances = instanceInfo;
}
public void input(Instance instance) throws Exception {
if (m_Debug) {
System.err.println("InstanceTable::input(" + instance +")");
}
m_Instances.add(instance);
}
public void batchFinished() {
TableModel newModel = new AbstractTableModel() {
private static final long serialVersionUID = 5447106383000555291L;
public String getColumnName(int col) {
return m_Instances.attribute(col).name();
}
public Class getColumnClass(int col) {
return "".getClass();
}
public int getColumnCount() {
return m_Instances.numAttributes();
}
public int getRowCount() {
return m_Instances.numInstances();
}
public Object getValueAt(int row, int col) {
return new String(m_Instances.instance(row).toString(col));
}
};
m_InstanceTable.setModel(newModel);
if (m_Debug) {
System.err.println("InstanceTable::batchFinished()");
}
}
public InstanceTable() {
setLayout(new BorderLayout());
m_InstanceTable = new JTable();
add("Center", new JScrollPane(m_InstanceTable));
}
public void setDebug(boolean debug) {
m_Debug = debug;
}
public boolean getDebug() {
return m_Debug;
}
public void instanceProduced(InstanceEvent e) {
Object source = e.getSource();
if (source instanceof InstanceProducer) {
try {
InstanceProducer a = (InstanceProducer) source;
switch (e.getID()) {
case InstanceEvent.FORMAT_AVAILABLE:
inputFormat(a.outputFormat());
break;
case InstanceEvent.INSTANCE_AVAILABLE:
input(a.outputPeek());
break;
case InstanceEvent.BATCH_FINISHED:
batchFinished();
break;
default:
System.err.println("InstanceTable::instanceProduced()"
+ " - unknown event type");
break;
}
} catch (Exception ex) {
System.err.println(ex.getMessage());
}
} else {
System.err.println("InstanceTable::instanceProduced()"
+ " - Unknown source object type");
}
}
}