localfiletree.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.tree.*;
import javax.swing.filechooser.*;
import javax.swing.event.*;
import java.awt.Cursor;
import java.awt.Component;
import java.awt.Font;
import java.io.*;
import java.awt.*;
import javax.swing.*;
import java.util.*;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;
import java.awt.event.*;
import cmd.*;

public class LocalFileTree
    extends JTree implements TreeExpansionListener, TreeSelectionListener,
    MouseListener {
  protected DefaultTreeModel treeModel;
  protected FileSystemView fileSystemView; //建立文件系统视类对象
  protected FileNode root;

  public LocalFileTree() {
    Font myFont = new Font("宋体", 11, 12);
    fileSystemView = FileSystemView.getFileSystemView();
    root = new FileNode(fileSystemView.getRoots()[0]);
    root.explore();
    treeModel = new DefaultTreeModel(root);
    this.setModel(treeModel); //设定树形菜单
    this.addTreeExpansionListener(this); //打开/关闭节点事件
    this.addTreeSelectionListener(this); //选择的事件
    this.setCellRenderer(new MyTreeCellRenderer()); //生成图标
    this.setFont(myFont);
    this.setRootVisible(true);
    this.setRowHeight(18);
    this.addMouseListener(this);
  }

  protected class MyTreeCellRenderer
      extends JLabel implements TreeCellRenderer {

    public MyTreeCellRenderer() {
      //this.setBackground(UIManager.getColor("Tree.textBackground"));
      this.setOpaque(true);
    }

    public Component getTreeCellRendererComponent(JTree tree, Object value,
                                                  boolean sel, boolean expanded,
                                                  boolean leaf, int row,
                                                  boolean hasFocus) {
      String stringValue = tree.convertValueToText(value, sel, expanded, leaf,
          row, hasFocus);
      setFont(tree.getFont());
      //设置图标为系统的文件类型图标
      FileSystemView fileSystemView = FileSystemView.getFileSystemView();
      setIcon(fileSystemView.getSystemIcon( ( (FileNode) value).getFile()));
      setText(stringValue);
      setBackground(hasFocus ? Color.LIGHT_GRAY: UIManager.getColor("Tree.textBackground"));
      return this;
    }

  }

  //节点张开事件
  public void treeExpanded(TreeExpansionEvent event) {
    //判断是否是叶节点
    //if (this.getLastSelectedPathComponent() == null) {
    //System.out.println("ok");
    //return;
    //}
    setCursor(new Cursor(Cursor.WAIT_CURSOR));
    TreePath path = event.getPath();
    //System.out.println(path.toString());
    FileNode node = (FileNode) path.getLastPathComponent();
    node.explore();
    treeModel.nodeStructureChanged(node);
    this.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

  }

  //节点闭合事件
  public void treeCollapsed(TreeExpansionEvent event) {

  }

  //文件节点类
  protected class FileNode
      extends DefaultMutableTreeNode {

    private boolean isSelected = false;
    private boolean explored = false;

    public FileNode(File file) {
      this(file, false);
    }

    public FileNode(File file, boolean bool) {
      super(file);
      this.isSelected = bool;
    }

    //
    public boolean isSelected() {
      return isSelected;
    }

    public void setSelected(boolean isSelected) {
      this.isSelected = isSelected;
      /*if (children != null) {
        Enumeration enu = children.elements();
        while (enu.hasMoreElements()) {
          FileNode node = (FileNode) enu.nextElement();
          node.setSelected(isSelected);
        }
      }*/
    }

    //
    public boolean getAllowsChildren() {
      return isDirectory();
    }

    public boolean isLeaf() {
      return!isDirectory();
    }

    public File getFile() {
      return (File) getUserObject();
    }

    public boolean isExplored() {
      return explored;
    }

    public void setExplored(boolean b) {
      explored = b;
    }

    public boolean isDirectory() {
      return getFile().isDirectory();
    }

    public String toString() {
      File file = (File) getUserObject();
      String filename = file.toString();
      int index = filename.lastIndexOf(File.separator);
      return (index != -1 && index != filename.length() - 1)
          ? filename.substring(index + 1) : filename;
    }

    public void explore() {
      if (!isExplored()) {
        File file = getFile();
        File[] children = file.listFiles();
        if (children == null || children.length == 0)
          return;
        for (int i = 0; i < children.length; ++i) {
          File f = children[i];
          add(new FileNode(children[i], isSelected));
        }
        explored = true;
      }
    }

  }

  /**
   * 选择节点触发的事件
   * 继承或是直接引用需要重新写此方法
   * @param e
   */
  public void valueChanged(TreeSelectionEvent e) {
    //文件路径
    String sFilePath = "";
    Object myobj = this.getLastSelectedPathComponent();
    if (myobj != null) {
      sFilePath = ( (File) ( ( (DefaultMutableTreeNode) (myobj)).getUserObject())).
          getPath();
    }
    //System.out.println(sFilePath);
  }

  /**
   * Invoked when the mouse button has been clicked (pressed and released) on a
   * component.
   *
   * @param e MouseEvent
   * @todo Implement this java.awt.event.MouseListener method
   */
  public void mouseClicked(MouseEvent e) {
    int count = e.getClickCount();
    if(e.getButton()==e.BUTTON3){
      JPopupMenu jpp = new JPopupMenu();
      JMenuItem ii = new JMenuItem("上传");
      jpp.add(ii);
      this.add(jpp);
      int x = e.getX();
      int y = e.getY();
      int row = this.getRowForLocation(x, y);
      jpp.show(this,x,y);
      ii.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent evt) {
          popListen();
        }
      });

    }
    if(e.getButton()==e.BUTTON1&&count==1){
      int x = e.getX();
      int y = e.getY();
      int row = this.getRowForLocation(x, y);
      TreePath path = this.getPathForRow(row);
      if (path != null) {
        FileNode node = (FileNode) path.getLastPathComponent();
        //boolean isSelected = ! (node.isSelected());
        node.setSelected(true);
        //( (DefaultTreeModel)this.getModel()).nodeChanged(node);
      }

    }
    if (count == 2) {
      int x = e.getX();
      int y = e.getY();
      int row = this.getRowForLocation(x, y);
      TreePath path = this.getPathForRow(row);
      if (path != null) {
        FileNode node = (FileNode) path.getLastPathComponent();
        boolean isSelected = ! (node.isSelected());
        node.setSelected(isSelected);
        ( (DefaultTreeModel)this.getModel()).nodeChanged(node);
      }
    }

  }

  public void popListen() {
    TreePath nodePath = this.getSelectionModel().getSelectionPath();
    Object[] ob = nodePath.getPath();
    String file="";
    if(nodePath.getPathCount()>3){
      int tmp=(ob[2].toString()).indexOf("\\");
      file=ob[2].toString().substring(0,tmp)+"/";
      for (int i = 3; i < nodePath.getPathCount() - 1; i++) {
        file += ob[i].toString().trim()+"/";
      }
      file += ob[nodePath.getPathCount() - 1].toString().trim();
    }
    System.out.println(file);
    Vector clist = new Vector();
    Vector alist = new Vector();
    CommandArgument ca = new CommandArgument();
    ca.setArgument(file,"");
    clist.addElement("PutFile");
    alist.addElement(ca);
    TransactionCommand tc = new TransactionCommand(clist, alist);
    CommandManager cm = new CommandManager(tc);
    cm.runCommands();

  }

  /**
   * Invoked when a mouse button has been pressed on a component.
   *
   * @param e MouseEvent
   * @todo Implement this java.awt.event.MouseListener method
   */
  public void mousePressed(MouseEvent e) {
  }

  /**
   * Invoked when a mouse button has been released on a component.
   *
   * @param e MouseEvent
   * @todo Implement this java.awt.event.MouseListener method
   */
  public void mouseReleased(MouseEvent e) {
  }

  /**
   * Invoked when the mouse enters a component.
   *
   * @param e MouseEvent
   * @todo Implement this java.awt.event.MouseListener method
   */
  public void mouseEntered(MouseEvent e) {
  }

  /**
   * Invoked when the mouse exits a component.
   *
   * @param e MouseEvent
   * @todo Implement this java.awt.event.MouseListener method
   */
  public void mouseExited(MouseEvent e) {
  }
}