🚀 go-pugleaf

Hiya !

Have you seen the example called SampleTree in
"JBuilder3\samples\jdk\demo\jfc\SampleTree" ??
That's where i started. I wanted a node with 2 strings (label-textfield)
I created my own object (replacing SampleData in the example) and my own
TreeCellRenderer.
For what i can see, you can create any object you want and display it in the
tree, as long as you give a paint method if it's tricky.

If you have any hints to share, or any questions, feel free !!!

        Pascale

package SampleTree;

import java.awt.*;
import javax.swing.*;

public class PanelNoeud extends JPanel
{
  BorderLayout borderLayout1 = new BorderLayout();
  JLabel Label = new JLabel();
  JTextField TextField = new JTextField();

  public PanelNoeud()
    {
    try
      {
      jbInit();
      }
    catch(Exception ex)
      {
      ex.printStackTrace();
      }
    }

  public PanelNoeud(Color Couleur_Etq, Color Couleur_Val, String Etiquette)
    {
    try
      {
      jbInit();
      Label.setText(Etiquette + ": ");
      }
    catch(Exception ex)
      {
      ex.printStackTrace();
      }
    }

  private void jbInit() throws Exception
    {
    this.setLayout(borderLayout1);
    Label.setBackground(Color.white);
    this.setBackground(Color.white);
    this.add(Label, BorderLayout.WEST);
    this.add(TextField, BorderLayout.CENTER);
    Label.setText("Etiquette: ");
    TextField.setText("Valeur");
    }

//  public void paint(Graphics g, boolean isSelected)
//    {
/*
    Rectangle rectLabel = Label.getBounds();
    g.fillRect(rectLabel.x, rectLabel.y, rectLabel.height -1,
rectLabel.width -1);

    Label.paint(g);

    Rectangle rectTextField = TextField.getBounds();
    g.fillRect(rectLabel.x + rectTextField.x, rectLabel.y + rectTextField.y,
rectTextField.height -1, rectTextField.width -1);

    TextField.paint(g);
*/
//    }

//  public void setBounds(int x, int y, int w, int h)
//    {
//    TextField.setBounds(x, y, w, h);
//    }

  public void setString(String newString)
    {
   TextField.setText(newString);
    }

  public String toString ()
    {
    return TextField.getText();
    }
  }

package SampleTree;

import java.awt.Font;
import java.awt.Graphics;
import javax.swing.JLabel;
import javax.swing.JTree;
import java.awt.Component;
import java.awt.Color;
import javax.swing.tree.TreeCellRenderer;
import javax.swing.tree.DefaultMutableTreeNode;
import java.awt.Rectangle;

public class MyFirstRenderer extends PanelNoeud implements TreeCellRenderer
  {
  /** Color to use for the background when selected. */
  static protected final Color SelectedBackgroundColor = Color.yellow;

  protected boolean            selected;
  /** Font used if the string to be displayed isn't a font. */
  static protected Font             defaultFont;

  static
    {
   try
      {
     defaultFont = new Font("SansSerif", 0, 12);
     }
    catch (Exception e) {}
    }


  public MyFirstRenderer()
    {
    }

  public Component getTreeCellRendererComponent
         (JTree tree, Object value,
        boolean selected, boolean expanded,
      boolean leaf, int row,
      boolean hasFocus)
    {
   Font    font;
   String  stringValue = tree.convertValueToText(value, selected, expanded,
leaf, row, hasFocus);

   /* Set the text. */
   TextField.setText(stringValue);
    PanelNoeud userObject =
(PanelNoeud)((DefaultMutableTreeNode)value).getUserObject();

   if(hasFocus)
       setForeground(Color.cyan);
   else
       setForeground(Color.black);
   if(userObject.getFont() == null)
       setFont(defaultFont);
   else
       setFont(userObject.getFont());

   /* Update the selected flag for the next paint. */
   this.selected = selected;

   return this;
    }

  public void paint(Graphics g)
    {
   Color            bColor;
//   Icon             currentI = getIcon();

   if(selected)
      bColor = SelectedBackgroundColor;
   else if(getParent().getParent() != null)
     /* Pick background color up from parent (which will come from
        the JTree we're contained in). */
     bColor = getParent().getBackground();
   else
     bColor = getBackground();

   g.setColor(bColor);
//   if(currentI != null && getText() != null) {
//     int          offset = (currentI.getIconWidth() + getIconTextGap());

//     g.fillRect(offset, 0, getWidth() - 1 - offset,
//         getHeight() - 1);
// }
// else
//    g.fillRect(0, 0, getWidth()-1, getHeight()-1);
   super.paint(g);
    }
  }


Alex wrote in message <7s5ms0$8o620@forums.borland.com>...
>Hello,
>
>I want to show two different JTrees and I have a problem with each of them:
>
>The fisrt one shall show two icons (and text) for some nodes. That�s
already
>the problem. I can set different icons depending on the node�s state
>(expanded or not, ...) but I don�t know how to show two icons at the same
>time.
>
>
>
>
>I want my second JTree to show a JCheckBox next to the node�s icon.  I have
>simply no idea how to do this .
>
>
>Would you please help me and tell me how to do that or where I can find an
>exmple ?
>
>
>Thank you all very much,
>Alex.
>
>