downloadmanager.java

一个网络上传下载器

/*
 * DownloadManager.java
 *
 * Created on 2007年10月28日, 下午3:16
 */
package DownloadManager;

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

/**
 this class is UI that download files by URL
@author Liu Yu Yang
 */
public class DownloadManager extends javax.swing.JFrame
        implements Observer {

    /**
     Constructor of DownloadManager
     */
    public DownloadManager() {
        tableModel = new DownloadsTableModel();
        initComponents();
        setDownloadsTableModel();
        pack();
    }

    /** This method is called from within the constructor to
    initialize the form.
    WARNING: Do NOT modify this code. The content of this method is
    always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        addDownloadButton = new javax.swing.JButton();
        removeDownloadButton = new javax.swing.JButton();
        showDetailsButton = new javax.swing.JButton();
        controlButtonPanel = new javax.swing.JPanel();
        startButton = new javax.swing.JButton();
        pauseButton = new javax.swing.JButton();
        resumeButton = new javax.swing.JButton();
        cancelButton = new javax.swing.JButton();
        downloadsPanel = new javax.swing.JPanel();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jPanel2 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        txtURL = new javax.swing.JTextField();
        txtSaveTo = new javax.swing.JTextField();
        txtRenameAs = new javax.swing.JTextField();
        jLabel5 = new javax.swing.JLabel();
        threadsSpinner = new javax.swing.JSpinner();
        browseButton = new javax.swing.JButton();
        jMenuBar2 = new javax.swing.JMenuBar();
        fileMenuItem1 = new javax.swing.JMenu();
        menuItemCodeManager = new javax.swing.JMenuItem();
        jSeparator2 = new javax.swing.JSeparator();
        fileExitMenuItem1 = new javax.swing.JMenuItem();
        editMenuItem1 = new javax.swing.JMenu();
        jMenuItem1 = new javax.swing.JMenuItem();
        controlMenuItem = new javax.swing.JMenu();
        startMenuItem = new javax.swing.JMenuItem();
        pauseMenuItem = new javax.swing.JMenuItem();
        resumeMenuItem = new javax.swing.JMenuItem();
        stopMenuItem = new javax.swing.JMenuItem();
        helpMenuItem = new javax.swing.JMenu();
        aboutMenuItem = new javax.swing.JMenuItem();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("DownloadManagers");
        setLocationByPlatform(true);
        setName("Form"); // NOI18N

        jPanel1.setBorder(javax.swing.BorderFactory.createEtchedBorder());
        jPanel1.setName("jPanel1"); // NOI18N

        addDownloadButton.setText("Add");
        addDownloadButton.setName("addDownloadButton"); // NOI18N
        addDownloadButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                addDownloadButtonActionPerformed(evt);
            }
        });

        removeDownloadButton.setText("Remove");
        removeDownloadButton.setName("removeDownloadButton"); // NOI18N
        removeDownloadButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                removeDownloadButtonActionPerformed(evt);
            }
        });

        showDetailsButton.setText("Details");
        showDetailsButton.setName("showDetailsButton"); // NOI18N

        controlButtonPanel.setName("controlButtonPanel"); // NOI18N

        startButton.setText("Start");
        startButton.setName("startButton"); // NOI18N
        startButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                startButtonActionPerformed(evt);
            }
        });

        pauseButton.setText("Pause");
        pauseButton.setName("pauseButton"); // NOI18N
        pauseButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                pauseButtonActionPerformed(evt);
            }
        });

        resumeButton.setText("Resume");
        resumeButton.setName("resumeButton"); // NOI18N
        resumeButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                resumeButtonActionPerformed(evt);
            }
        });

        cancelButton.setText("Stop");
        cancelButton.setName("cancelButton"); // NOI18N
        cancelButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                cancelButtonActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout controlButtonPanelLayout = new javax.swing.GroupLayout(controlButtonPanel);
        controlButtonPanel.setLayout(controlButtonPanelLayout);
        controlButtonPanelLayout.setHorizontalGroup(
            controlButtonPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(controlButtonPanelLayout.createSequentialGroup()
                .addComponent(startButton)
                .addGap(30, 30, 30)
                .addComponent(pauseButton)
                .addGap(38, 38, 38)
                .addComponent(resumeButton)
                .addGap(41, 41, 41)
                .addComponent(cancelButton)
                .addContainerGap(284, Short.MAX_VALUE))
        );

        controlButtonPanelLayout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {cancelButton, pauseButton, resumeButton, startButton});

        controlButtonPanelLayout.setVerticalGroup(
            controlButtonPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(controlButtonPanelLayout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addGroup(controlButtonPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(startButton)
                    .addComponent(pauseButton)
                    .addComponent(resumeButton)
                    .addComponent(cancelButton)))
        );

        downloadsPanel.setBorder(javax.swing.BorderFactory.createTitledBorder(javax.swing.BorderFactory.createEtchedBorder(), "Downloads"));
        downloadsPanel.setName("downloadsPanel"); // NOI18N

        jScrollPane1.setName("jScrollPane1"); // NOI18N

        jTable1.setModel(tableModel);
        jTable1.setName("jTable1"); // NOI18N
        jScrollPane1.setViewportView(jTable1);

        javax.swing.GroupLayout downloadsPanelLayout = new javax.swing.GroupLayout(downloadsPanel);
        downloadsPanel.setLayout(downloadsPanelLayout);
        downloadsPanelLayout.setHorizontalGroup(
            downloadsPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(downloadsPanelLayout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 668, Short.MAX_VALUE)
                .addContainerGap())
        );
        downloadsPanelLayout.setVerticalGroup(
            downloadsPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(downloadsPanelLayout.createSequentialGroup()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 263, Short.MAX_VALUE)
                .addContainerGap())
        );

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(addDownloadButton)
                        .addGap(18, 18, 18)
                        .addComponent(removeDownloadButton)
                        .addGap(18, 18, 18)
                        .addComponent(showDetailsButton))
                    .addComponent(downloadsPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(controlButtonPanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addContainerGap())
        );

        jPanel1Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {addDownloadButton, removeDownloadButton, showDetailsButton});

        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap(38, Short.MAX_VALUE)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(removeDownloadButton)
                    .addComponent(showDetailsButton)
                    .addComponent(addDownloadButton, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addComponent(downloadsPanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(controlButtonPanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(24, 24, 24))
        );

        jPanel2.setName("jPanel2"); // NOI18N

        jLabel1.setText("URL:");
        jLabel1.setName("jLabel1"); // NOI18N

        jLabel2.setText("Save To:");
        jLabel2.setName("jLabel2"); // NOI18N

        jLabel3.setText("Rename As:");
        jLabel3.setName("jLabel3"); // NOI18N

        txtURL.setName("txtURL"); // NOI18N

        txtSaveTo.setName("txtSaveTo"); // NOI18N

        txtRenameAs.setName("txtRenameAs"); // NOI18N

        jLabel5.setText("Set threads:");
        jLabel5.setName("jLabel5"); // NOI18N

        threadsSpinner.setName("threadsSpinner"); // NOI18N

        browseButton.setText("Browse");
        browseButton.setName("browseButton"); // NOI18N
        browseButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                browseButtonActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel2Layout.createSequentialGroup()
                .addGap(22, 22, 22)
                .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jLabel1)
                    .addComponent(jLabel3)
                    .addComponent(jLabel2))
                .addGap(18, 18, 18)
                .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(txtRenameAs, javax.swing.GroupLayout.DEFAULT_SIZE, 373, Short.MAX_VALUE)
                    .addComponent(txtURL, javax.swing.GroupLayout.DEFAULT_SIZE, 373, Short.MAX_VALUE)
                    .addGroup(jPanel2Layout.createSequentialGroup()
                        .addComponent(txtSaveTo, javax.swing.GroupLayout.PREFERRED_SIZE, 262, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 29, Short.MAX_VALUE)
                        .addComponent(browseButton)
                        .addGap(11, 11, 11)))
                .addGap(15, 15, 15)
                .addComponent(jLabel5)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(threadsSpinner, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(96, 96, 96))
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel2Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(txtURL, javax.swing.GroupLayout.DEFAULT_SIZE, 23, Short.MAX_VALUE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(txtSaveTo, javax.swing.GroupLayout.DEFAULT_SIZE, 23, Short.MAX_VALUE)
                    .addComponent(jLabel2)
                    .addComponent(browseButton)
                    .addComponent(jLabel5)
                    .addComponent(threadsSpinner, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(txtRenameAs))
                .addGap(20, 20, 20))
        );

        jMenuBar2.setName("jMenuBar1"); // NOI18N

        fileMenuItem1.setText("File");
        fileMenuItem1.setName("fileMenuItem"); // NOI18N

        menuItemCodeManager.setText("CodeManager");
        menuItemCodeManager.setName("menuItemCodeManager"); // NOI18N
        menuItemCodeManager.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                menuItemCodeManagerActionPerformed(evt);
            }
        });
        fileMenuItem1.add(menuItemCodeManager);

        jSeparator2.setName("jSeparator2"); // NOI18N
        fileMenuItem1.add(jSeparator2);

        fileExitMenuItem1.setText("Exit");
        fileExitMenuItem1.setName("fileExitMenuItem"); // NOI18N
        fileExitMenuItem1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                fileExitMenuItem1ActionPerformed(evt);
            }
        });
        fileMenuItem1.add(fileExitMenuItem1);

        jMenuBar2.add(fileMenuItem1);

        editMenuItem1.setText("Edit");
        editMenuItem1.setName("editMenuItem"); // NOI18N

        jMenuItem1.setText("Add");
        jMenuItem1.setName("jMenuItem1"); // NOI18N