mainpanel.java

相似度匹配程序。可以用来匹配任何你想得到的信息格式

//
//  MainPanel.java
//  Simphile
//
//  Created by Brian Risk on Thu May 09 2002.
//  Copyright (c) 2002 Geneffects. All rights reserved.
//

import java.io.*;
import java.util.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

public class MainPanel extends JFrame implements ActionListener{
    
    //Step 1
    JButton chooseFile;
    JLabel fileName;
    File mainFile = null;
    //step 2
    JList list;
    JScrollPane scroll;
    JButton addFiles;
    JButton removeFiles;
    File otherFile = null;
    Vector comparisonFiles = new Vector();
    //step 3
    JButton go;
    JProgressBar jpb;

    public MainPanel() {
        //step 1
        chooseFile = new JButton("Choose file");
        chooseFile.addActionListener(this);
        fileName = new JLabel();
        //step 2
        list = new JList();
        scroll = new JScrollPane(list);
        addFiles =  new JButton("Add file(s)");
        addFiles.addActionListener(this);
        removeFiles =  new JButton("Remove selected file(s)");
        removeFiles.addActionListener(this);
        //step 3
        go =  new JButton("Go!");
        jpb = new JProgressBar();
        go.addActionListener(this);
        
        Container majorPane = getContentPane();
        majorPane.setLayout(new BoxLayout(majorPane, BoxLayout.Y_AXIS));
        
        JPanel titlePanel = new JPanel();
        titlePanel.setMaximumSize(new Dimension(300,40));
        URL imageURL = ClassLoader.getSystemResource("simphile_title.gif");
        Image splashImage = Toolkit.getDefaultToolkit().getImage(imageURL);
        JLabel label = new JLabel(new ImageIcon(splashImage));
        label.setAlignmentX(Component.CENTER_ALIGNMENT);
        titlePanel.add(label);
        
        majorPane.add(titlePanel);
        majorPane.add(step1());
        majorPane.add(step2());
        majorPane.add(step3());
        pack();
    }
    
    public void actionPerformed(ActionEvent ex) {
        if (ex.getSource().equals(chooseFile)) {chooseFile();}
        if (ex.getSource().equals(addFiles)) {addFiles();}
        if (ex.getSource().equals(removeFiles)) {removeFiles();}
        if (ex.getSource().equals(go)) {go();}
    }
    
    private JPanel step1() {
        JPanel jp = new JPanel();
        jp.setMaximumSize(new Dimension(300,60));
        jp.add(chooseFile);
        jp.add(new JLabel("File:  "));
        jp.add(fileName);
        jp.setBorder(new TitledBorder("Step 1"));
        return jp;
    }
    
     private JPanel step2() {
        JPanel jp = new JPanel();
        jp.setLayout(new BoxLayout(jp, BoxLayout.Y_AXIS));
        jp.add(scroll);
        JPanel bottomStep2 = new JPanel();
        bottomStep2.add(addFiles);
        bottomStep2.add(removeFiles);
        bottomStep2.setAlignmentX(Component.CENTER_ALIGNMENT);
        jp.add(bottomStep2);
        jp.setBorder(new TitledBorder("Step 2"));
        return jp;
    }
    
    private JPanel step3() {
        JPanel jp = new JPanel();
        jp.setLayout(new BoxLayout(jp, BoxLayout.Y_AXIS));
        go.setAlignmentX(Component.CENTER_ALIGNMENT);
        jp.add(go);
        jp.add(jpb);
        jp.setBorder(new TitledBorder("Step 3"));
        return jp;
    }
    
    private void chooseFile() {
        if (mainFile == null) {mainFile = otherFile;}
        JFileChooser chooser = new JFileChooser(mainFile);
        chooser.setAcceptAllFileFilterUsed(true);
        chooser.setDialogTitle("Choose a file");
        chooser.setMultiSelectionEnabled(false);
        int option = chooser.showOpenDialog(this);
        if (option == JFileChooser.APPROVE_OPTION) {
            mainFile = chooser.getSelectedFile();
            fileName.setText(mainFile.getName());
        }
        
    }
    
    private void addFiles() {
        if (otherFile == null) {otherFile = mainFile;}
        JFileChooser chooser = new JFileChooser(otherFile);
        chooser.setAcceptAllFileFilterUsed(true);
        chooser.setDialogTitle("Select file(s)");
        chooser.setMultiSelectionEnabled(true);
        int option = chooser.showOpenDialog(this);
        if (option == JFileChooser.APPROVE_OPTION) {
            File [] newFiles = chooser.getSelectedFiles();
            otherFile = newFiles[0];
            for (int i = 0; i < newFiles.length; i++) {
                comparisonFiles.add(new Candidate(newFiles[i]));
            }
            list.setListData(comparisonFiles);
        }
    }
    
    private void removeFiles() {
        int [] indices = list.getSelectedIndices();
        for (int i = 0; i < indices.length; i++) {
            comparisonFiles.removeElementAt(indices[indices.length - i - 1]);
        }
        list.setListData(comparisonFiles);
    }
    
    private void go() {
        Thread appThread = new Thread() {
            public void run() {
                if ((mainFile == null) || (comparisonFiles.size() == 0)) {return;}
                long mainLength = ZipStuff.GZip(mainFile);
                for (int i = 0; i < comparisonFiles.size(); i++) {
                    final int selectIndex = i;
                    try {
                        EventQueue.invokeAndWait( new Runnable() {public void run() {
                            list.setSelectedIndex(selectIndex);
                            JScrollBar jsb = scroll.getVerticalScrollBar();
                            int lvi = list.getLastVisibleIndex();
                            if (lvi < selectIndex) {
                                int block = jsb.getBlockIncrement(1);
                                int presentValue = jsb.getValue();
                                jsb.setValue(presentValue + block);
                            }
                        }});
                        Thread.sleep(100);
                    } catch (Exception e) {}
                    Candidate presentCandidate = (Candidate) comparisonFiles.get(i);
                    File subFile = presentCandidate.getFile();
                    long subLength = ZipStuff.GZip(subFile);
                    long compressedLength = ZipStuff.GZip(subFile, mainFile);
                    double compressionRate = ((double) (mainLength + subLength)) / ((double) compressedLength);
                    presentCandidate.setScore(compressionRate);
                    final int percentDone = (int) ((100.0) * (((double) i) / ((double) comparisonFiles.size())));
                    try {
                        EventQueue.invokeAndWait( new Runnable() {public void run() {
                            jpb.setValue(percentDone);
                        }});
                        Thread.sleep(100);
                    } catch (Exception e) {}
                }
                Collections.sort(comparisonFiles, new Candidate());
                list.setListData(comparisonFiles);
                scroll.getVerticalScrollBar().setValue(0);
                jpb.setValue(0);  
            }
        };
        appThread.start();
    }
    
}