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help me I can't work the tree well

Craig Wood
Ranch Hand

Joined: Jan 14, 2004
Posts: 1535
It is recommended that we not mix AWT and Swing components. Your application extends Frame and uses Menus which are AWT components. If you want a JTree and JComboBox you could change everything over to Swing ("J") components.
ddddfdffd hello world
Greenhorn

Joined: Sep 28, 2004
Posts: 3
I do not care whether the component is awt or swing,I just want to know
how to change the driver to display in the panel with the right tree
whose root is the content of the combobox.
thanks help


god is love
Craig Wood
Ranch Hand

Joined: Jan 14, 2004
Posts: 1535
ddddfdffd hello world
Greenhorn

Joined: Sep 28, 2004
Posts: 3
//I can't make the combobox work well,I want to chang the driver or another way how can I list a tree structure with all drivers in the computer 。
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import java.io.File;
import javax.swing.border.*;
import java.util.*;


public class Explorer extends Frame
{
DefaultMutableTreeNode top;
JLabel picture;
JComboBox combo = new JComboBox ();
String rootvalue;
JTree tree;
JScrollPane treepane;
JPanel leftpanefortree ;
JPanel rightpanefordisp ;
JSplitPane splitPane;
public void Change (JTree atree)
{
this.tree = atree;
}
public Explorer ()
{

try
{
// UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
UIManager.setLookAndFeel (UIManager.getSystemLookAndFeelClassName ());
}
catch (Exception exc)
{
System.err.println ("Error loading L&F: " + exc);
}

MenuBar mbar = new MenuBar ();
setMenuBar (mbar);

Menu file = new Menu ("File");
MenuItem item1, item2, item3, item4;

Menu subf = new Menu ("New....", true);
MenuItem item11, item12;
subf.add (item11 = new MenuItem ("Folder"));
subf.add (item12 = new MenuItem ("Text Document"));
file.add (subf);

item2 = new MenuItem ("Open");
file.add (item2);

item3 = new MenuItem ("Close");
file.add (item3);

item4 = new MenuItem ("Quit....");
//file.add(item4 = new MenuItem("Quit...."));
file.add (item4);

mbar.add (file);

Menu edit = new Menu ("Edit");
MenuItem item5, item6, item7, item8, item9;
edit.add (item5 = new MenuItem ("Undo"));
edit.add (item6 = new MenuItem ("Cut"));
edit.add (item7 = new MenuItem ("Copy"));
edit.add (item8 = new MenuItem ("Paste"));
edit.add (new MenuItem ("-"));
edit.add (item9 = new MenuItem ("Select All"));

mbar.add (edit);

Menu view = new Menu ("View");
MenuItem item20, item14, item15, item16, item17;
Menu subv = new Menu ("Explorer Bar.....", true);
MenuItem item10, item13;
subv.add (item10 = new MenuItem ("History"));
subv.add (item13 = new MenuItem ("Folders"));
view.add (subv);
view.add (new MenuItem ("-"));

view.add (item14 = new MenuItem ("Large Icons"));
view.add (item15 = new MenuItem ("Small Icons"));
view.add (item16 = new MenuItem ("List"));
view.add (item17 = new MenuItem ("Details"));
view.add (new MenuItem ("-"));

Menu subv1 = new Menu ("Arrange icons.....", true);
MenuItem item18, item19;
subv1.add (item18 = new MenuItem ("by Name"));
subv1.add (item19 = new MenuItem ("by Type"));
view.add (subv1);
view.add (new MenuItem ("-"));

view.add (item20 = new MenuItem ("Refresh"));
mbar.add (view);

Menu go = new Menu ("Go");
MenuItem item21, item22, item23;
go.add (item21 = new MenuItem ("Back"));
go.add (item22 = new MenuItem ("Forward"));
go.add (new MenuItem ("-"));
go.add (item23 = new MenuItem ("My Computer"));
mbar.add (go);

Menu tools = new Menu ("Tools");
MenuItem item24;
tools.add (item24 = new MenuItem ("Find(files/folders)"));
mbar.add (tools);

Menu help = new Menu ("Help");
MenuItem item25, item26;
help.add (item25 = new MenuItem ("Help Topic"));
mbar.add (help);

MyMenuHandler handler = new MyMenuHandler (this);


//item1.addActionListener(handler);
item2.addActionListener (handler);
item3.addActionListener (handler);
item4.addActionListener (handler);
item5.addActionListener (handler);
item6.addActionListener (handler);
item7.addActionListener (handler);
item8.addActionListener (handler);
item9.addActionListener (handler);
item10.addActionListener (handler);
item11.addActionListener (handler);
item12.addActionListener (handler);
item13.addActionListener (handler);
item14.addActionListener (handler);
item15.addActionListener (handler);
item16.addActionListener (handler);
item17.addActionListener (handler);
item18.addActionListener (handler);
item19.addActionListener (handler);
item20.addActionListener (handler);


File[]roots = File.listRoots ();




rootvalue = roots[1].toString();
tree = new JTree (createTreeModel (rootvalue));
treepane = new JScrollPane (tree);
FileNodeRenderer renderer = new FileNodeRenderer ();
AbstractBorder border = new EtchedBorder ();

tree.addTreeSelectionListener (new TreeSelectionListener ()
{
public void
valueChanged (TreeSelectionEvent e)
{
DefaultMutableTreeNode node =
(DefaultMutableTreeNode) tree.
getLastSelectedPathComponent ();
if (node == null) return;
System.out.println (node + "&&&&&&& " +
e.
getNewLeadSelectionPath
() + " ???" +
e.getPath ().
toString ());
String dir =
((File) node.getUserObject ()).
getAbsolutePath ();
//TreePath path = getLeadSelectionPath();
//FileNode node = (FileNode)path.getLastPathComponent();
System.out.println (dir);
ImageIcon newImage = new ImageIcon (dir);
picture.setIcon (newImage);
//picture.setText(dir);
// Object nodeInfo = node.getUserObject();
//...
/* React to the node selection. */
//...
}
}
);
tree.setEditable (true);
tree.setCellRenderer (renderer);

// getContentPane().add(treepane, BorderLayout.CENTER);

setLayout (new GridLayout (1, 2));
leftpanefortree = new JPanel ();
//add(leftpanefortree);
leftpanefortree.setBorder (border);
leftpanefortree.setLayout (new BorderLayout ());

for (int i = 0; i < roots.length; i++)
{
combo.addItem (roots[i].toString ());
}
combo.setSelectedIndex (1);
combo.addActionListener (new ActionListener ()
{
public void actionPerformed (ActionEvent e)
{
System.out.println (e);
rootvalue = combo.getSelectedItem ().toString ();
}
}
);
leftpanefortree.add (combo, BorderLayout.NORTH);

leftpanefortree.add (treepane, BorderLayout.CENTER);
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% //

rightpanefordisp = new JPanel ();
//add(rightpanefordisp);
rightpanefordisp.setLayout (new BorderLayout ());


// Label test=new Label(" (n_n)");
//rightpanefordisp.add(test,BorderLayout.BEFORE_FIRST_LINE);
rightpanefordisp.setBorder (border);
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% //

ImageIcon firstImage = new ImageIcon (" ");
if (firstImage != null)
{
picture = new JLabel (firstImage);
}
else
{
picture = new JLabel (" ");
}
JScrollPane pictureScrollPane = new JScrollPane (picture);
rightpanefordisp.add (pictureScrollPane, BorderLayout.CENTER);
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% //

splitPane =
new JSplitPane (JSplitPane.HORIZONTAL_SPLIT, leftpanefortree, rightpanefordisp);
splitPane.setOneTouchExpandable (true);
splitPane.setDividerLocation (200);
//splitPane.setPreferredSize(new Dimension(200,100));
splitPane.setDividerSize (10);
this.add (splitPane);

// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% //
MyWindowAdapter adapter = new MyWindowAdapter (this);
addWindowListener (adapter);


tree.addTreeExpansionListener (new TreeExpansionListener ()
{
public void
treeCollapsed (TreeExpansionEvent e)
{
}
public void
treeExpanded (TreeExpansionEvent e)
{
TreePath path = e.getPath ();
FileNode node =
(FileNode) path.getLastPathComponent ();
if (!node.isExplored ())
{
DefaultTreeModel model =
(DefaultTreeModel) tree.getModel ();
node.explore ();
model.nodeStructureChanged (node);}
}
}
);
}
private DefaultTreeModel createTreeModel (String rootstr)
{
String dirname[] =
{ "A:/..", "C:/..", "D:/..", "E:/..", "F:/..", "G:/.." };

// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% //

//int anzahl = File.listRoots().length;
//for (int i=0;i<anzahl;i++)
// {DefaultMutableTreeNode node = new DefaultMutableTreeNode(File.listRoots()[i]);
//top.add(node);
//setFolder(node);}
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% //

File root = new File (rootstr);

FileNode rootNode = new FileNode (root), node;



rootNode.explore ();

return new DefaultTreeModel (rootNode);

}
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% //

// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% //
public static void main (String args[])
{
Explorer f = new Explorer ();
f.setSize (new Dimension (400, 360));
f.setVisible (true);


}
}

class MyWindowAdapter extends WindowAdapter
{
Explorer exp;
public MyWindowAdapter ()
{
}
public MyWindowAdapter (Explorer exp)
{
this.exp = exp;
}
public void windowClosing (WindowEvent we)
{
exp.dispose ();
System.exit (0);
}
}

class MyMenuHandler implements ActionListener, ItemListener
{
Explorer exp1;
public MyMenuHandler (Explorer exp1)
{
this.exp1 = exp1;
}
public void actionPerformed (ActionEvent ae)
{
}
public void itemStateChanged (ItemEvent ie)
{
}

}


class FileNode extends DefaultMutableTreeNode
{
private boolean explored = false, selected = false;

public FileNode (File file)
{
setUserObject (file);
}
public boolean getAllowsChildren ()
{
return isDirectory ();
}
public boolean isLeaf ()
{
return !isDirectory ();
}
public File getFile ()
{
return (File) getUserObject ();
}

public void explore ()
{
explore (false);
}
public boolean isExplored ()
{
return explored;
}

public void setSelected (boolean s)
{
selected = s;
}
public boolean isSelected ()
{
return selected;
}

public boolean isDirectory ()
{
File file = (File) getUserObject ();
return file.isDirectory ();
}
public String toString ()
{
File file = (File) getUserObject ();
String filename = file.toString ();
int index = filename.lastIndexOf ("\\");

return (index != -1 &&
index !=
filename.length () - 1) ? filename.substring (index +
1) : filename;
}
public void explore (boolean force)
{
if (!isExplored () || force)
{
File file = getFile ();
File[]children = file.listFiles ();
if(children==null)
{System.out.println("can't access this root "+file);
return ;
}


for (int i = 0; i < children.length; ++i)
{
FileNode temp = (new FileNode (children[i]));
String tempstr = temp.toString ();
if (temp.isDirectory () || tempstr.endsWith ("gif") ||
tempstr.endsWith ("jpg"))
{
System.out.println (tempstr);
add (new FileNode (children[i]));
}
}

explored = true;
}
}
}
class FileNodeRenderer extends DefaultTreeCellRenderer
{

private JPanel panel = new JPanel ();

public FileNodeRenderer ()
{
panel.setBackground (UIManager.getColor ("Tree.textBackground"));

setOpaque (false);

panel.setOpaque (false);

panel.setLayout (new FlowLayout (FlowLayout.CENTER, 0, 0));
panel.add (this);


}
public Component getTreeCellRendererComponent (JTree tree, Object value,
boolean selected,
boolean expanded,
boolean leaf, int row,
boolean hasFocus)
{
FileNode node = (FileNode) value;
String s = tree.convertValueToText (value, selected,
expanded, leaf, row, hasFocus);

super.getTreeCellRendererComponent (tree, value, selected, expanded,
leaf, row, hasFocus);



return panel;
}
}
//please help me to make all the driver's worke well,thanks a lot
ddddfdffd hello world
Greenhorn

Joined: Sep 28, 2004
Posts: 3
it works ! thanks a lot!!!
as you can see I'm just a beginner ,thank for your help.
 
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subject: help me I can't work the tree well