package com.thb.tree;/** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2004</p> * <p>Company: </p> * @author not attributable * @version 1.0 */import java.awt.*;import java.awt.event.*;import javax.swing.*;import java.text.DateFormat;import javax.swing.event.*;import javax.swing.table.*;import javax.swing.tree.*;import javax.swing.filechooser.*;import java.io.*;import java.util.*;public class WinExplorer extends JFrame implements TreeSelectionListener{JPanel contentPane=(JPanel)getContentPane();;JMenuBar menuBar = new JMenuBar();JMenu menuFile = new JMenu("文件");JMenuItem menuItemExit = new JMenuItem("退出");JToolBar toolBar = new JToolBar();JButton bttUp = new JButton();Icon iconUp=UIManager.getIcon("FileChooser.upFolderIcon");JLabel statusBar = new JLabel();DetailTable detailTable = new DetailTable();JScrollPane sp = new JScrollPane(detailTable);JSplitPane split = new JSplitPane();FileSystemView fileSystemView=FileSystemView.getFileSystemView();FileNode root=new FileNode(fileSystemView.getRoots()[0]);DefaultTreeModel treeModel=new DefaultTreeModel(root);JTree tree = new JTree(treeModel);public static void main(String argv[]){  try {    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());    Font font=new Font("宋體",Font.PLAIN,12);    String names[]={"Label","CheckBox","PopupMenu","TextPane",                   "MenuItem","CheckBoxMenuItem","JRadioButtonMenuItem",                   "ComboBox","Button","Tree","ScrollPane","TabbedPane",                   "EditorPane","TitledBorder","Menu","TextArea","OptionPane",                   "MenuBar","ToolBar","ToggleButton","ToolTip","ProgressBar",                   "TableHeader","Panel","List","ColorChooser","PasswordField",                   "TextField","Table","Label","Viewport","RadioButtonMenuItem",                   "RadioButton"};    for(int i=0;i<names.length;i++)UIManager.put(names[i]+".font",font);    UIManager.put("Label.foreground",Color.black);    UIManager.put("Border.foreground",Color.black);    UIManager.put("TitledBorder.titleColor",Color.black);    new WinExplorer().show(); }catch(Exception e){    e.printStackTrace(); }}public WinExplorer() {contentPane.setLayout(new BorderLayout());Dimension dimension = getToolkit().getScreenSize();int i = (dimension.width - 640) / 2;int j = (dimension.height - 480) / 2;setBounds(i,j,640,480);setTitle("資源管理器");setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setJMenuBar(menuBar);statusBar.setText(" ");menuItemExit.addActionListener(new ActionListener()  {  public void actionPerformed(ActionEvent e) {System.exit(0);}});bttUp.setIcon(iconUp);bttUp.addActionListener(new java.awt.event.ActionListener() {  public void actionPerformed(ActionEvent e) {    try{        TreePath upPath=tree.getSelectionPath().getParentPath();        if(upPath!=null){              tree.setSelectionPath(upPath);              tree.scrollPathToVisible(upPath);        }     }catch(Exception ex){}  }});split.setDividerSize(6);split.setLeftComponent(new JScrollPane(tree));split.setRightComponent(sp);split.setDividerLocation(180);sp.getViewport().setBackground(Color.white);menuFile.add(menuItemExit);menuBar.add(menuFile);contentPane.add(toolBar, BorderLayout.NORTH);toolBar.add(bttUp, null);contentPane.add(statusBar, BorderLayout.SOUTH);contentPane.add(split, BorderLayout.CENTER);tree.addTreeExpansionListener(new MyExpandsionListener());tree.setCellRenderer(new MyTreeCellRenderer());tree.addTreeSelectionListener(this);tree.setSelectionRow(0);tree.setComponentOrientation(ComponentOrientation.UNKNOWN);}public void valueChanged(TreeSelectionEvent e){ Object obj=tree.getLastSelectedPathComponent(); if(obj==null)return; else detailTable.setParent(((FileNode)obj).getFile());}class MyTreeCellRenderer extends DefaultTreeCellRenderer {public MyTreeCellRenderer() {}public Component getTreeCellRendererComponent(JTree tree,Object value,          boolean sel,boolean expanded,boolean leaf,int row,boolean hasFocus) {    super.getTreeCellRendererComponent(tree,value,sel,expanded,leaf,row,hasFocus);    setIcon(fileSystemView.getSystemIcon(((FileNode)value).getFile()));    return this;}}class MyExpandsionListener implements TreeExpansionListener {public MyExpandsionListener() {}public void treeExpanded(TreeExpansionEvent event) {    if (tree.getLastSelectedPathComponent()==null){return;}    tree.setCursor(new Cursor(Cursor.WAIT_CURSOR));    TreePath path = event.getPath();    FileNode node = (FileNode)path.getLastPathComponent();    node.explore();    treeModel.nodeStructureChanged(node);    tree.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));}public void treeCollapsed(TreeExpansionEvent event) {}}class FileNode extends DefaultMutableTreeNode {  private boolean explored = false;  public FileNode(File file)  { setUserObject(file); }  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];               if(f.isDirectory())add(new FileNode(children[i]));          }          explored = true;      } }}class DetailTable extends JTable{    DetailTableModel model=new DetailTableModel();    public DetailTable(){        setModel(model);        setShowGrid(false);        TableColumnModel colModel = getColumnModel();        for (int i=0;i<3;i++)          colModel.getColumn(i).setCellRenderer(new DetailsTableCellRenderer());        setRowHeight(18);        this.addMouseListener(new MouseAdapter(){            public void mouseClicked(MouseEvent e) {                if(e.getClickCount()==2){                   for (int i = 0; i <getRowCount(); i++) {                        if(getCellRect(i,0,true).contains(e.getPoint())){                            openSelect();                            break;                        }                    }                }            }        });    }    public void openSelect(){        Object obj=model.getValueAt(getSelectedRow(),0);        if(obj==null)return;        File f=(File)obj;        if(f.isDirectory()){            //expand tree        }else{            //open select file        }    }    public void setParent(File parent){        model.removeAllRows();        File list[]=parent.listFiles();        if(list==null)return;        Vector vDir=new Vector(),vFile=new Vector();        for (int i = 0; i < list.length; i++) {            if(list[i].isDirectory())vDir.add(list[i]);            else vFile.add(list[i]);        }        sortElements(vFile);        sortElements(vDir);        for (int i = 0; i < vDir.size(); i++)model.addFile((File)vDir.elementAt(i));        for (int i = 0; i < vFile.size(); i++)model.addFile((File)vFile.elementAt(i));    }    public void sortElements(Vector v)     {        for(int i=0;i<v.size();i++)        {             int k=i;             for(int j=i+1;j<v.size();j++){                 File fa=(File)v.elementAt(j);                 File fb=(File)v.elementAt(k);                 if(fileSystemView.getSystemDisplayName(fa).toLowerCase().compareTo(                      fileSystemView.getSystemDisplayName(fb).toLowerCase())<0)k=j;             }             if(k!=i)swap(k,i,v);        }     }     private void swap(int loc1,int loc2,Vector v){         Object tmp=v.elementAt(loc1);         v.setElementAt(v.elementAt(loc2),loc1);         v.setElementAt(tmp,loc2);     }    class DetailTableModel extends DefaultTableModel {        public DetailTableModel() {            addColumn("名稱");            addColumn("大小");            addColumn("修改時間");        }        public void addFile(File f){            addRow(new Object[]{f,new Double(f.length()/1024),                 new java.sql.Date(f.lastModified())});        }        public void removeAllRows(){            while(getRowCount()!=0) removeRow(0);        }        public boolean isCellEditable(int row, int column) {return false;}    }    class DetailsTableCellRenderer extends DefaultTableCellRenderer {      DetailsTableCellRenderer() {}      public Component getTableCellRendererComponent(JTable table, Object value,                            boolean isSelected, boolean hasFocus, int row, int column) {          if (column == 1){              setHorizontalAlignment(SwingConstants.TRAILING);              isSelected=hasFocus=false;          }else if(column==2){              setHorizontalAlignment(SwingConstants.CENTER);              isSelected=hasFocus=false;          }else setHorizontalAlignment(SwingConstants.LEADING);          return super.getTableCellRendererComponent(                      table, value, isSelected, hasFocus, row, column);      }      public void setValue(Object value) {          setIcon(null);          if (value instanceof File) {              File file = (File)value;              setText(fileSystemView.getSystemDisplayName(file));              setIcon(fileSystemView.getSystemIcon(file));          }else{              super.setValue(value);          }      }  }}}