remotefilelist.java

FTP客户端 实现了客户端与FTP服务器的连接。可以上传

package ftpclient;

import javax.swing.*;
import javax.swing.filechooser.FileSystemView;
import java.awt.Component;
import java.io.*;
import java.util.*;
import java.awt.Color;
import java.awt.event.*;
import cmd.TransactionCommand;
import cmd.CommandArgument;
import cmd.CommandManager;
import cmd.CommandReceiver;

public class RemoteFileList
    extends JList {
  public RemoteFileList(Vector files) {
    //Object[]files={"aa","bb","cc"};
    super(files);
    ListRenderer lr = new ListRenderer();
    this.setCellRenderer(lr);
    new PopMenu(this);
  }

  protected class ListRenderer
      extends JLabel implements ListCellRenderer {
    public ListRenderer() {
      this.setOpaque(true);
    }

    public Component getListCellRendererComponent(JList list, Object value,
                                                  int index, boolean isSelected,
                                                  boolean cellHasFocus) {
      setFont(list.getFont());
      //设置图标为系统的文件类型图标
      FileSystemView fileSystemView = FileSystemView.getFileSystemView();
      String root = RemoteFileList.class.getResource("").getFile();
      File file1 = fileSystemView.createFileObject(root);
      Icon icon1 = fileSystemView.getSystemIcon(file1);
      File file2 = fileSystemView.getHomeDirectory();
      Icon icon2 = fileSystemView.getSystemIcon(file2);
      String text= value.toString();
      if(text.indexOf(".")>0&&!text.equals("..")){
        setIcon(icon2);
      }else{
        setIcon(icon1);
      }
      setText(value.toString());
      setBackground(isSelected ? Color.LIGHT_GRAY :
                    UIManager.getColor("List.textBackground"));
      return this;
    }
  }
}

class JListMouseListener
    extends MouseAdapter {
  private RemoteFileList rfl;
  private JPopupMenu jpp;
  public JListMouseListener(RemoteFileList rfl,JPopupMenu jpp){
    this.rfl=rfl;
    this.jpp=jpp;
  }
  public void mouseClicked(MouseEvent e){
    int index=rfl.getSelectedIndex();
    int len=rfl.getModel().getSize();
    String file="";
    if(-1<index&&index<len)file =rfl.getModel().getElementAt(index).toString();

    if((-1<index&&index<len)&&(e.getButton()==e.BUTTON1)&&(e.getClickCount()==2)){
      if(file.equals("."))file="/";
      Vector clist = new Vector();
      Vector alist = new Vector();
      CommandArgument ca = new CommandArgument();
      CommandArgument ca1 = new CommandArgument();
      ca.setArgument(file,"");
      ca1.setArgument("", "");
      clist.addElement("Cwd");
      clist.addElement("List");
      alist.addElement(ca);
      alist.addElement(ca1);
      TransactionCommand tc = new TransactionCommand(clist, alist);
      CommandManager cm = new CommandManager(tc);
      cm.runCommands();
      rfl.updateUI();
    }
    if(-1<index&&index<len&&e.getButton()==e.BUTTON3){
        jpp.show(rfl,e.getX(),e.getY());
    }
  }
}
class PopMenu{
  private RemoteFileList rfl1;
  private JPopupMenu jpp;
  public PopMenu(RemoteFileList rfl) {
    rfl1 = rfl;
    jpp = new JPopupMenu();
    JMenuItem ii = new JMenuItem("下载");
    JMenuItem i2 = new JMenuItem("续传");
    jpp.add(ii);
    jpp.add(i2);
    rfl.add(jpp);
    rfl.addMouseListener(new JListMouseListener(rfl, jpp));
    ii.addActionListener(new ActionListener(){
       public void actionPerformed(ActionEvent evt){
         jpp.setVisible(false);
         int index=rfl1.getSelectedIndex();
         String file=rfl1.getModel().getElementAt(index).toString();
         Vector clist=new Vector();
         Vector alist=new Vector();
         CommandArgument ca= new CommandArgument();
         ca.setArgument(file,"");
         clist.addElement("Get");
         alist.addElement(ca);
         TransactionCommand tc = new TransactionCommand(clist, alist);
         CommandManager cm = new CommandManager(tc);
         cm.runCommands();
       }
     });

  }
}