Discussion :

[chupachoc]

en fait, ce que je cherche à faire, c'est une représentation de l'arborescence de l'OS sous forme d'un arbre java.

l'embettant est que je ne sais pas où récupérer les différents lecteurs présents, les hdd, ..........

en fait, je ne sais pas où récupérer cette arborescence.

si qqun a une solution, je l'en remercie

[chupachoc]

désolé de vous avoir dérangé mais je viens d'arriver à mes fins.

[Tao]

POST ta solution sa aidera peut être d'autres personnes qui s'oppose au même problème

[chupachoc]

Code :

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import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
 
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.event.*;
 
public class Arb extends JPanel //extends JFrame 
{
  public static final ImageIcon ICON_COMPUTER = 
    new ImageIcon("pt2.JPG");
  public static final ImageIcon ICON_DISK = 
    new ImageIcon("pt4.JPG");
  public static final ImageIcon ICON_FOLDER = 
    new ImageIcon("bib.JPG");
  public static final ImageIcon ICON_EXPANDEDFOLDER = 
    new ImageIcon("bibouv.JPG");
 
  protected JTree  m_tree;
  protected DefaultTreeModel m_model;
  protected JTextField m_display;
 
  public Arb() {
  //  super("Arbre MICRO");
   // setSize(400, 300);
 
    DefaultMutableTreeNode top = new DefaultMutableTreeNode(
      new IconData(ICON_COMPUTER, null, "MICRO"));
 
    DefaultMutableTreeNode node;
      File[] roots = File.listRoots();
    for (int k=0; k<roots.length; k++) {
      node = new DefaultMutableTreeNode(
        new IconData(ICON_DISK, 
        null, new FileNode(roots[k])));
      top.add(node);
      node.add( new DefaultMutableTreeNode(
      new Boolean(true)));
    }
 
    m_model = new DefaultTreeModel(top);
    m_tree = new JTree(m_model);
    m_tree.getSelectionModel().setSelectionMode(
      TreeSelectionModel.SINGLE_TREE_SELECTION);
    m_tree.putClientProperty("JTree.lineStyle", "Angled");
    TreeCellRenderer renderer = new IconCellRenderer();
    m_tree.setCellRenderer(renderer);
    m_tree.addTreeExpansionListener(new DirExpansionListener());
    m_tree.addTreeSelectionListener(new DirSelectionListener());
    m_tree.setShowsRootHandles(true); 
    m_tree.setEditable(false);
 
 
    JScrollPane pane3 = new JScrollPane(m_tree);
    setLayout(new GridLayout(1,0));
    pane3.setBorder(BorderFactory.createTitledBorder("MICRO"));
    add(pane3);
 
//    JScrollPane s = new JScrollPane();
//    s.getViewport().add(m_tree);
//    getContentPane().add(s, BorderLayout.CENTER);
//
//    m_display = new JTextField();
//    m_display.setEditable(false);
//    getContentPane().add(m_display, BorderLayout.NORTH);
 
//    WindowListener wndCloser = new WindowAdapter() {
//      public void windowClosing(WindowEvent e) {
//        System.exit(0);
//      }
//    };
//    addWindowListener(wndCloser);
//        
//    setVisible(true);
  }
 
  DefaultMutableTreeNode getTreeNode(TreePath path) {
    return (DefaultMutableTreeNode) (path.getLastPathComponent());
  }
 
  FileNode getFileNode(DefaultMutableTreeNode node) {
    if (node == null)
      return null;
    Object obj = node.getUserObject();
    if (obj instanceof IconData)
      obj = ((IconData)obj).getObject();
    if (obj instanceof FileNode)
      return (FileNode)obj;
    else
      return null;
  }
 
  // Make sure expansion is threaded and updating the tree model
  // only occurs within the event dispatching thread.
  class DirExpansionListener implements TreeExpansionListener
  {
    public void treeExpanded(TreeExpansionEvent event) {
      final DefaultMutableTreeNode node = getTreeNode(
        event.getPath());
      final FileNode fnode = getFileNode(node);
 
      Thread runner = new Thread() {
        public void run() {
          if (fnode != null && fnode.expand(node)) {
            Runnable runnable = new Runnable() {
              public void run() {
                m_model.reload(node);
              }
            };
            SwingUtilities.invokeLater(runnable);
          }
        }
      };
      runner.start();
    }
 
    public void treeCollapsed(TreeExpansionEvent event) {}
  }
 
  class DirSelectionListener implements TreeSelectionListener
  {
    public void valueChanged(TreeSelectionEvent event) {
      DefaultMutableTreeNode node = getTreeNode(event.getPath());
        FileNode fnode = getFileNode(node);
        if (fnode != null)
          m_display.setText(fnode.getFile().getAbsolutePath());
        else
          m_display.setText("");
    }
  }
 
//  public static void main(String argv[]) { 
//  	try {
//	     UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
//	} catch (Exception exc) {
//	    System.err.println("Error loading L&F: " + exc);
//	}
//  	new Arb(); }
}
 
class IconCellRenderer extends JLabel implements TreeCellRenderer
{
  protected Color m_textSelectionColor;
  protected Color m_textNonSelectionColor;
  protected Color m_bkSelectionColor;
  protected Color m_bkNonSelectionColor;
  protected Color m_borderSelectionColor;
 
  protected boolean m_selected;
 
  public IconCellRenderer() {
    super();
    m_textSelectionColor = UIManager.getColor(
      "Tree.selectionForeground");
    m_textNonSelectionColor = UIManager.getColor(
      "Tree.textForeground");
    m_bkSelectionColor = UIManager.getColor(
      "Tree.selectionBackground");
    m_bkNonSelectionColor = UIManager.getColor(
      "Tree.textBackground");
    m_borderSelectionColor = UIManager.getColor(
      "Tree.selectionBorderColor");
    setOpaque(false);
  }
 
  public Component getTreeCellRendererComponent(JTree tree, 
   Object value, boolean sel, boolean expanded, boolean leaf, 
   int row, boolean hasFocus)        
  {
    DefaultMutableTreeNode node = (DefaultMutableTreeNode)value;
    Object obj = node.getUserObject();
    setText(obj.toString());
 
    if (obj instanceof Boolean)
      setText("Chargement.....");
 
    if (obj instanceof IconData) {
      IconData idata = (IconData)obj;
      if (expanded)
        setIcon(idata.getExpandedIcon());
      else
        setIcon(idata.getIcon());
    }
    else
      setIcon(null);
 
    setFont(tree.getFont());
    setForeground(sel ? m_textSelectionColor : 
      m_textNonSelectionColor);
    setBackground(sel ? m_bkSelectionColor : 
      m_bkNonSelectionColor);
    m_selected = sel;
    return this;
  }
 
  public void paintComponent(Graphics g) {
    Color bColor = getBackground();
    Icon icon = getIcon();
 
    g.setColor(bColor);
    int offset = 0;
    if(icon != null && getText() != null) 
      offset = (icon.getIconWidth() + getIconTextGap());
    g.fillRect(offset, 0, getWidth() - 1 - offset,
      getHeight() - 1);
 
    if (m_selected) {
      g.setColor(m_borderSelectionColor);
      g.drawRect(offset, 0, getWidth()-1-offset, getHeight()-1);
    }
    super.paintComponent(g);
  }
}
 
class IconData
{
  protected Icon   m_icon;
  protected Icon   m_expandedIcon;
  protected Object m_data;
 
  public IconData(Icon icon, Object data) {
    m_icon = icon;
    m_expandedIcon = null;
    m_data = data;
  }
 
  public IconData(Icon icon, Icon expandedIcon, Object data) {
    m_icon = icon;
    m_expandedIcon = expandedIcon;
    m_data = data;
  }
 
  public Icon getIcon() { return m_icon; }
 
  public Icon getExpandedIcon() { 
    return m_expandedIcon!=null ? m_expandedIcon : m_icon;
  }
 
  public Object getObject() { return m_data; }
 
  public String toString() { return m_data.toString(); }
}
 
class FileNode
{
  protected File m_file;
 
  public FileNode(File file) { m_file = file; }
 
  public File getFile() { return m_file; }
 
  public String toString() {
    return m_file.getName().length() > 0 ? m_file.getName() :
      m_file.getPath();
  }
 
  public boolean expand(DefaultMutableTreeNode parent) {
    DefaultMutableTreeNode flag =
      (DefaultMutableTreeNode)parent.getFirstChild();
    if (flag==null)      // No flag
      return false;
    Object obj = flag.getUserObject();
    if (!(obj instanceof Boolean))
      return false;      // Already expanded
 
    parent.removeAllChildren();  // Remove Flag
 
    File[] files = listFiles();
    if (files == null)
      return true;
 
    Vector v = new Vector();
 
    for (int k=0; k<files.length; k++) {
      File f = files[k];
      if (!(f.isDirectory()))
        continue;
 
      FileNode newNode = new FileNode(f);
 
      boolean isAdded = false;
      for (int i=0; i<v.size(); i++) {
        FileNode nd = (FileNode)v.elementAt(i);
        if (newNode.compareTo(nd) < 0) {
          v.insertElementAt(newNode, i);
          isAdded = true;
          break;
        }
      }
      if (!isAdded)
      v.addElement(newNode);
    }
 
    for (int i=0; i<v.size(); i++) {
      FileNode nd = (FileNode)v.elementAt(i);
      IconData idata = new IconData(Arb.ICON_FOLDER, 
        Arb.ICON_EXPANDEDFOLDER, nd);
      DefaultMutableTreeNode node = 
        new DefaultMutableTreeNode(idata);
      parent.add(node);
 
      if (nd.hasSubDirs())
        node.add(new DefaultMutableTreeNode( 
          new Boolean(true) ));
    }
    return true;
  }
 
  public boolean hasSubDirs() {
    File[] files = listFiles();
    if (files == null)
      return false;
    for (int k=0; k<files.length; k++) {
      if (files[k].isDirectory())
        return true;
    }
    return false;
  }
 
  public int compareTo(FileNode toCompare) { 
    return  m_file.getName().compareToIgnoreCase(
      toCompare.m_file.getName() ); 
  }
 
  protected File[] listFiles() {
    if (!m_file.isDirectory())
      return null;
    try {
      return m_file.listFiles();
    }
    catch (Exception ex) {
      JOptionPane.showMessageDialog(null, 
        "Error reading directory "+m_file.getAbsolutePath(),
        "Warning", JOptionPane.WARNING_MESSAGE);
          return null;
    }
  }
}

j'espère que ce code pourra aider qqun