numbercelleditor.java

一个很好的LIBSVM的JAVA源码。对于要研究和改进SVM算法的学者。可以参考。来自数据挖掘工具YALE工具包。

/*
 *  YALE - Yet Another Learning Environment
 *  Copyright (C) 2001-2004
 *      Simon Fischer, Ralf Klinkenberg, Ingo Mierswa, 
 *          Katharina Morik, Oliver Ritthoff
 *      Artificial Intelligence Unit
 *      Computer Science Department
 *      University of Dortmund
 *      44221 Dortmund,  Germany
 *  email: [e-mail]
 *  web:   http://yale.cs.uni-dortmund.de/
 *
 *  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 edu.udo.cs.yale.gui;

import edu.udo.cs.yale.operator.parameter.ParameterTypeNumber;
import edu.udo.cs.yale.operator.parameter.ParameterTypeInt;
import edu.udo.cs.yale.operator.parameter.ParameterTypeDouble;

import javax.swing.table.TableCellEditor;
import javax.swing.AbstractCellEditor;
import javax.swing.SpinnerNumberModel;
import javax.swing.JTable;
import javax.swing.JSpinner;
import javax.swing.event.ChangeListener;
import javax.swing.event.ChangeEvent;
import java.awt.Component;

/** Cell editor consiting of a text field and a small button for opening a file chooser. 
 *  @yale.todo Handle parameters without default value
 *  @version $Id: NumberCellEditor.java,v 2.5 2004/08/27 11:57:33 ingomierswa Exp $ */
public class NumberCellEditor extends AbstractCellEditor implements PropertyCellEditor {

    private JSpinner spinner;
    private ParameterTypeNumber type;

    private class NumberTypeSpinnerModel extends SpinnerNumberModel {
	private NumberTypeSpinnerModel(int min, int max) {
	    super(min, min, max, 1);
	    setValue(type.getDefaultValue());
	}
	private NumberTypeSpinnerModel(double min, double max) {
	    super(min, min, max, 1.0);
	    setValue(type.getDefaultValue());
	}
    }

    public NumberCellEditor(ParameterTypeNumber type) {
	this.type = type;
	SpinnerNumberModel model = null;
	if (type instanceof ParameterTypeInt) {
	    ParameterTypeInt intType = (ParameterTypeInt)type;
	    model = new NumberTypeSpinnerModel(intType.getMinValueInt(), intType.getMaxValueInt());

	} else {
	    model = new NumberTypeSpinnerModel(type.getMinValue(), type.getMaxValue());
	    
	}
	this.spinner = new JSpinner(model);
	this.spinner.setBorder(null);
	spinner.setToolTipText(type.getDescription() + " ("+type.getRange()+")");
	spinner.addChangeListener(new ChangeListener() {
		public void stateChanged(ChangeEvent e) {
		    NumberCellEditor.this.fireEditingStopped();
		}
	    });
    }

    public Object getCellEditorValue() {
	return spinner.getValue();
    }

    public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int col) {
	//spinner.setValue((value == null) ? "" : value.toString());
	spinner.setValue(value);
	return spinner;
    }

    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
	return getTableCellEditorComponent(table, value, isSelected, row, column);
    }

    public boolean useEditorAsRenderer() {
	return true;
    }

    
}