content: /*
   *    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");
      }
    }
  }
  
  
  
  
  