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package swing.tree;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.SwingUtilities;
import javax.swing.SwingWorker;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.DefaultTreeModel;
import com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel;
public class MyFileTree {
private JFrame frame;
private JButton b;
private JTree tree;
private JProgressBar progress;
public MyFileTree() {
frame = new JFrame();
progress = new JProgressBar();
progress.setIndeterminate(true);
frame.add(progress, BorderLayout.NORTH);
progress.setVisible(false);
tree = new JTree(new DefaultTreeModel(new DefaultMutableTreeNode("Vide")));
tree.setCellRenderer(new FileTreeCellRenderer());
b = new JButton("Changer Arbo");
b.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
JFileChooser chooser = new JFileChooser();
chooser.setMultiSelectionEnabled(false);
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int flag = chooser.showDialog(frame, "Choisir répertoire");
if(flag == JFileChooser.APPROVE_OPTION) {
DirectoryWorker worker = new DirectoryWorker(chooser.getSelectedFile());
progress.setVisible(true);
frame.validate();
worker.execute();
}
}
});
frame.setSize(640, 480);
frame.add(new JScrollPane(tree), BorderLayout.CENTER);
frame.add(b, BorderLayout.SOUTH);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public JFrame getFrame() {
return frame;
}
private class FileTreeCellRenderer extends DefaultTreeCellRenderer {
/* (non-Javadoc)
* @see javax.swing.tree.DefaultTreeCellRenderer#getTreeCellRendererComponent(javax.swing.JTree, java.lang.Object, boolean, boolean, boolean, int, boolean)
*/
@Override
public Component getTreeCellRendererComponent(JTree arg0, Object arg1, boolean arg2, boolean arg3, boolean arg4, int arg5, boolean arg6) {
// TODO Module de remplacement de méthode auto-généré
super.getTreeCellRendererComponent(arg0, arg1, arg2, arg3, arg4, arg5, arg6);
System.out.println(arg1.getClass());
if(DefaultMutableTreeNode.class.equals(arg1.getClass())) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) arg1;
if(File.class.equals(node.getUserObject().getClass())) {
File f = (File) node.getUserObject();
setText(f.getName());
}
}
return this;
}
}
private class DirectoryWorker extends SwingWorker<DefaultMutableTreeNode, Void> {
private DefaultMutableTreeNode root=null;
private File f;
public DirectoryWorker(File f) {
super();
this.f = f;
}
@Override
protected DefaultMutableTreeNode doInBackground() throws Exception {
root = buildFileTree(f);
return null;
}
@Override
protected void done() {
tree.setModel(new DefaultTreeModel(root));
progress.setVisible(false);
frame.validate();
super.done();
}
private DefaultMutableTreeNode buildFileTree(File f) {
System.out.println(f.getAbsolutePath());
DefaultMutableTreeNode node = new DefaultMutableTreeNode(f);
if(f.isDirectory()) {
File[] children = f.listFiles();
for (File child : children) {
node.add(buildFileTree(child));
}
}
return node;
}
}
public static void main(String[] args) {
Runnable r = new Runnable() {
public void run() {
try {
UIManager.setLookAndFeel(new NimbusLookAndFeel());
new MyFileTree().getFrame().setVisible(true);
} catch (UnsupportedLookAndFeelException e) {
// TODO Bloc catch auto-généré
e.printStackTrace();
}
}
};
SwingUtilities.invokeLater(r);
}
} |
File vers un affichage sur JTree
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