www.pudn.com > htmlsaver.rar > DownloadProject.java

import javax.swing.*; 
import javax.swing.table.*; 
import java.awt.*; 
import java.awt.event.*; 
import java.util.*; 
 
public class DownloadProject implements ActionListener 
{ 
  public Project prj; 
  public Object[] names; 
  public boolean[] down; 
   
  public boolean isOver; 
   
  protected JDialog dialog; 
   
  protected JTable table; 
  protected DownTableModel model; 
   
  protected JButton auto; 
  protected JButton user; 
  protected JButton over; 
   
  protected boolean inAutoDownload; 
   
  public DownloadProject(Project prj, JFrame owner) 
  { 
    this.prj = prj; 
    names = prj.names.values().toArray(); 
    down = new boolean[names.length]; 
    for (int i = 0; i < down.length; i++) 
      down[i] = false; 
     
    isOver = false; 
    inAutoDownload = false; 
     
    dialog = new JDialog(owner, "Download Project " + prj.prjName, true); 
     
    initDialog(); 
  } 
   
  public void initDialog() 
  { 
    dialog.getContentPane().setLayout(new BorderLayout()); 
     
    model = new DownTableModel(); 
    table = new JTable(model); 
    table.setSelectionMode(DefaultListSelectionModel.SINGLE_SELECTION); 
 
    TableColumn column = null; 
    column = table.getColumnModel().getColumn(0); 
    column.setPreferredWidth(300); 
    column = table.getColumnModel().getColumn(1); 
    column.setPreferredWidth(100); 
    column = table.getColumnModel().getColumn(2); 
    column.setPreferredWidth(50); 
     
    dialog.getContentPane().add(new JScrollPane(table), BorderLayout.CENTER); 
     
    JPanel p = new JPanel(new GridLayout(1, 3)); 
     
    auto = new JButton(/*"Auto Download"*/"自动下载"); 
    auto.addActionListener(this); 
    user = new JButton(/*"User Download"*/"单独下载"); 
    user.addActionListener(this); 
    over = new JButton(/*"Stop Download"*/"结束下载"); 
    over.addActionListener(this); 
     
    p.add(auto); 
    p.add(user); 
    p.add(over); 
     
    dialog.getContentPane().add(p, BorderLayout.SOUTH); 
     
    dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE); 
    dialog.setSize(500, 300); 
    dialog.show(); 
  } 
   
  public void actionPerformed(ActionEvent e) 
  { 
    if (e.getSource() == auto) 
      autoDownload(); 
    else if (e.getSource() == user) 
      userDownload(); 
    else if (e.getSource() == over) 
    { 
      isOver = true; 
      refresh(); 
    } 
  } 
   
  class DownTableModel extends AbstractTableModel 
  { 
    String[] columnNames = {"URL", "Name", "Status"}; 
    public String getColumnName(int col) { 
      return columnNames[col].toString(); 
    } 
    public int getRowCount() { return names.length; } 
    public int getColumnCount() { return 3; } 
    public Object getValueAt(int row, int col) { 
      if (col == 0) 
        return ((URLName)names[row]).url; 
      else if (col == 1) 
        return ((URLName)names[row]).name; 
      else 
      { 
        if (down[row] == true) 
          return "下载中"; 
        else if (((URLName)names[row]).finish) 
          return "完成"; 
        else 
          return "未下载"; 
      } 
    } 
    public void refresh() 
    { 
      fireTableDataChanged(); 
    } 
  } 
   
  protected void autoDownload() 
  { 
    if (!inAutoDownload) 
    { 
      new AutoSaveURL(this); 
      inAutoDownload = true; 
    } 
  } 
   
  protected void userDownload() 
  { 
    if (table.getSelectedRowCount() != 1) 
      return; 
       
    int row = table.getSelectedRow(); 
    boolean can = false; 
    synchronized (down) 
    { 
      if (!down[row]) 
      { 
        down[row] = true; 
        can = true; 
      } 
    } 
    if (can) 
    { 
      new UserSaveURL(this, row).start(); 
      model.refresh(); 
    } 
    else 
    { 
      JOptionPane.showMessageDialog(dialog, "该页面已经在下载，不能进行操作"); 
    } 
  } 
   
  public void refresh() 
  { 
    model.refresh(); 
    if (isOver) 
    { 
      for (int i = 0; i < down.length; i++) 
        if (down[i]) 
          return; 
      dialog.hide(); 
    } 
  } 
   
  public static void main(String[] args) 
  { 
    Project project; 
    try { 
      project = new Project("f:\\other\\BTB.prj"); 
    } 
    catch (Exception e) { 
      return; 
    } 
    new DownloadProject(project, new JFrame()); 
  } 
}