swingtools.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.tools.Tools;
import edu.udo.cs.yale.tools.ParameterService;
import edu.udo.cs.yale.operator.UserError;
import edu.udo.cs.yale.Yale;

import java.io.File;
import java.awt.Color;
import java.awt.Component;
import java.awt.GradientPaint;
import java.awt.FlowLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import javax.swing.JOptionPane;
import javax.swing.JDialog;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.BorderFactory;
import javax.swing.JFileChooser;
import javax.swing.JTextArea;
import javax.swing.JScrollPane;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JEditorPane;
import javax.swing.JLabel;
import javax.swing.filechooser.FileFilter;

public class SwingTools {

    /** Defines the extra height for each row in a table. */
    public static final int TABLE_ROW_EXTRA_HEIGHT = 8;

    // some color constants for Java Look and Feel
    public static final Color DARK_YELLOW  = new Color(180, 164, 148); 
    public static final Color LIGHT_YELLOW = new Color(206, 184, 163);
    public static final Color DARK_BLUE  = new Color(153, 153, 204);
    public static final Color LIGHT_BLUE = new Color(204, 204, 255);


    public static GradientPaint makeBluePaint(double width, double height) {
	return new GradientPaint(0f, 0f, DARK_BLUE, 
				 (float)width/2, (float)height/2, LIGHT_BLUE,
				 true);
    }

    public static GradientPaint makeYellowPaint(double width, double height) {
	return new GradientPaint(0f, 0f, DARK_YELLOW, 
				 (float)width/2, (float)height/2, LIGHT_YELLOW,
				 true);
    }

    public static void showVerySimpleErrorMessage(String message) {
	JOptionPane.showMessageDialog(YaleGUI.getMainFrame(), 
				      message,
				      "Exception",
				      JOptionPane.ERROR_MESSAGE);
    }

    public static void showSimpleErrorMessage(String message, Throwable e) {
	JOptionPane.showMessageDialog(YaleGUI.getMainFrame(), 
				      message + "\n"+
				      Tools.classNameWOPackage(e.getClass())+" caught:\n"+
				      e.getMessage(),
				      "Exception",
				      JOptionPane.ERROR_MESSAGE);
    }

    public static void showErrorMessage(String message, Throwable e) {
	JDialog dialog =  ErrorDialog.create(message, e);
	dialog.setLocationRelativeTo(YaleGUI.getMainFrame());
	dialog.show();
    }

    /** Opens a file chooser with a reasonable start directory. */
    public static File chooseFile(Component parent, File file, boolean open) {
	return chooseFile(parent, file, open, false);
    }

    /** Opens a file chooser with a reasonable start directory.  */
    public static File chooseFile(Component parent, File file, boolean open, boolean onlyDirs) {
	return chooseFile(parent, file, open, onlyDirs, null);
    }

    /** Opens a file chooser with a reasonable start directory. onlyDirs indidcates if only files or only 
     *  can be selected. 
     *  @param file The initially selected value of the file chooser dialog
     *  @param open Open or save dialog?
     *  @param onlyDirs Only allow directories to be selected
     *  @param fileFilters List of FileFilters to use */
    public static File chooseFile(Component parent, File file, boolean open, boolean onlyDirs,
				  FileFilter[] fileFilters) {
	if (parent == null) parent = YaleGUI.getMainFrame();
	JFileChooser fileChooser = createFileChooser(file, onlyDirs, fileFilters);
	int returnValue = open ? fileChooser.showOpenDialog(parent) : fileChooser.showSaveDialog(parent);
	switch (returnValue) {
	case JFileChooser.APPROVE_OPTION:
	    return fileChooser.getSelectedFile();
	default:
	    return null;
	}
    }

    /** Creates file chooser with a reasonable start directory.
     *  You may use the following code snippet in order to retrieve the file:
     *  <pre>
     *	if (fileChooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION)
     *	    File selectedFile = fileChooser.getSelectedFile();
     *  </pre>
     *  Usually, the method {@link #chooseFile(Component, File, boolean, boolean, FileFilter[])} 
     *  or one of the convenience wrapper methods can be used to do this. This method is only
     *  useful if one is interested, e.g., in the selected file filter.
     *
     *  @param file The initially selected value of the file chooser dialog
     *  @param onlyDirs Only allow directories to be selected
     *  @param fileFilters List of FileFilters to use */
    public static JFileChooser createFileChooser(File file, 						 
						 boolean onlyDirs,
						 FileFilter[] fileFilters) {
	File directory = null;

	if (file != null) {
	    if (file.isDirectory()) {
		directory = file;
	    } else {
		directory = file.getAbsoluteFile().getParentFile();
	    }
	} else {
	    File experimentFile = (Yale.getExperiment() != null) ? 
		Yale.getExperiment().getExperimentFile() : 
		null;
	    if (experimentFile != null) {
		directory = experimentFile.getAbsoluteFile().getParentFile();
	    } else {
		directory = new File(System.getProperty("user.dir"));
	    }
	}

	JFileChooser fileChooser = new JFileChooser(directory);
	if (onlyDirs)
	    fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
	if (fileFilters != null) {
	    fileChooser.setAcceptAllFileFilterUsed(false);
	    for (int i = 0; i < fileFilters.length; i++)
		fileChooser.addChoosableFileFilter(fileFilters[i]);
	}
	if (file != null) fileChooser.setSelectedFile(file);
	return fileChooser;
    }


    /** Creates a panel with title and text. */
    public static JPanel createTextPanel(String title, String text) {
	JPanel panel = new JPanel(new java.awt.BorderLayout());
	JLabel label = new JLabel("<html><h2>"+title+"</h2><p>"+text+"</p></html>");
	label.setBorder(BorderFactory.createEmptyBorder(11,11,11,11));
	label.setFont(label.getFont().deriveFont(java.awt.Font.PLAIN));
	panel.add(label, java.awt.BorderLayout.NORTH);
	return panel;
    }


    // ================================================================================

    /** Replaces simple html tags and quotes by Yale specific text elements. These can be used in XML files without
     *  confusing an XML parser. */
    public static String html2YaleText(String html) {
	if (html == null) return null;
	String result = html.replaceAll("<", "#ylt#");
	result = result.replaceAll(">", "#ygt#");
	result = result.replaceAll("\"", "#yquot#");
	return result;
    }

    /** Replaces the Yale specific tag elements by normal html tags. Additionally the given text is embedded in an 
     *  html and body tag with proper style sheet definitions. */
    public static String text2DisplayHtml(String text) {
	String result = "<html><head><style type=text/css>body { font-family:sans-serif; font-size:12pt; }</style></head><body>" + text + "</body></html>";
	result = text2SimpleHtml(result);
	result = result.replaceAll("#yquot#", "&quot;");
	while (result.indexOf("<icon>") != -1) {
	    int startIndex = result.indexOf("<icon>");
	    int endIndex   = result.indexOf("</icon>");
	    String start = result.substring(0, startIndex);
	    String end   = result.substring(endIndex + 7);
	    String icon = result.substring(startIndex + 6, endIndex).trim();	    
	    java.net.URL url = Tools.getResource("icons/"+icon+".gif");
	    result = start + "<img src=\""+url+"\">" + end;
	}
	return result;
    }

    /** Replaces the Yale specific tag elements by normal html tags. This method does not embed the given text in a
     *  html tag. */
    public static String text2SimpleHtml(String text) {
	if (text == null) return null;
	String result = text.replaceAll("#ygt#", ">");
	result = result.replaceAll("#ylt#", "<");
	//result = result.replaceAll("#yquot#", "&quot;");
	//result = result.replaceAll("\"", "&quot;");
	return result;
    }
}