observationsequencescomponent.java

java实现的隐马尔科夫模型

/* jahmm package - v0.3.1 */

/*
 *  Copyright (c) 2004, Jean-Marc Francois.
 *
 *  This file is part of Jahmm.
 *  Jahmm 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.
 *
 *  Jahmm 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 Jahmm; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package be.ac.ulg.montefiore.run.jahmm.gui;

import java.util.*;
import java.text.*;
import javax.swing.*;
import javax.swing.table.*;

import be.ac.ulg.montefiore.run.jahmm.*;


/**
 * This class implements a graphical representation of a set of observation
 * sequences.
 */
public class ObservationSequencesComponent 
    extends JList implements GuiComponent {
    
    /**
     * The observation sequences depicted by this object.
     */
    final protected List<List<Observation>> sequences;
    final private SequencesList sequencesList;
    
    
    /**
     * Builds a new graphical representation of a set of observation sequences.
     */
    public ObservationSequencesComponent(List<List<Observation>> sequences) {
	super(new SequencesList(sequences));
	
	this.sequencesList = (SequencesList) getModel();
	this.sequences = sequences;
    }
    
    
    /**
     * Returns sequences depicted by this object.
     *
     * @return The sequences depicted by this object.
     */
    public  List<List<Observation>> embeddedObject() {
	return sequences;
    }
    
    
    /**
     * Return the indices of the selected sequences.
     *
     * @return Returns the array of selected sequences indices.
     */
    public int[] selected() {
	return getSelectedIndices();
    }
}


/*
 * The data model for the JList.
 */
class SequencesList
    extends AbstractListModel {
    
    private final int MAX_ENTRIES = 100;
    protected List<List<Observation>> sequences;
    private NumberFormat numberFormat = NumberFormat.getInstance();

    
    public SequencesList(List<List<Observation>> sequences) {
	this.sequences = sequences;
	numberFormat.setMaximumFractionDigits(3);
    }
  
    
    public int getSize() { 
	return sequences.size(); 
    }
    
    
    public Object getElementAt(int index) {
	String s = "";
	
	for (int i = 0; i < sequences.get(index).size() && i < MAX_ENTRIES; i++)
	    s += sequences.get(index).get(i).toString(numberFormat) + " ";
	
	if (sequences.get(index).size() > MAX_ENTRIES)
	    s += "...";
	
        return s;
    }
}