Determine if mouse is over tree node

Question

hi.
I recently added some code from this forum on
highlighting a node when the mouse is over it.
I am taking this futher and setting a Border around the nodehowever it draws a border around every node.
I want to only draw the border when the mouse is over the node.
the example i got does this to set the foreground
((JLabel)result).setForeground(Color.red);
i do this to set the border
((JLabel)result).setBorder
(BorderFactory.createLineBorder(Color.black));
i ve tried getting the positions of both the mouse and the jlabel but am having trouble determining if the position of the mouse is within the position of the node in the tree.
Ive used methods like the contains method but it doesnt work for me . can anyone give me a hint as to how to see if the points of the mouse are on the Jlabel?

Answer 1

This is very close to your solution. Last month, I implement ToolTip Text on every Tree Node so when Mouse goes on to the Node, It shows the Tool Tip Text. Have a look at this code and try to change it accordingly.
This code is in the Constructor in your class.
tree.setCellRenderer(new IDETreeCellRenderer());
tree.setToolTipText("");Class: IDETreeCellRenderer - Cell Renderer for the Tree
package tv.izone.ide.tree;
import java.awt.*;
import javax.swing.*;
import javax.swing.tree.*;
import tv.izone.core.*;
import tv.izone.ide.guiutilities.*;
import tv.izone.izml.data.*;
public class IDETreeCellRenderer
    extends DefaultTreeCellRenderer {
   DefaultTreeCellRenderer label;
    * Override TreeCellRendererComponent, used for changing Tree Node for comments.
    * @param tree Tree to be used
    * @param value Value of the Node
    * @param selected true, if selected
    * @param expanded true, if expanded
    * @param leaf true, if it is a leaf
    * @param row Row Number
    * @param hasFocus True, if has Focus
    * @return Component, Tree
   public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded,
                                  boolean leaf, int row, boolean hasFocus) {
      try {
      label = (DefaultTreeCellRenderer)super.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row,
                                                  hasFocus);
      label.setToolTipText(dataObject.getToolTipText());
// Instead of setToolTipText(), try setBackgroundColor() or setBorder()
     return label;
      } catch (Exception ex) {
      // NullPointerException, usually comes at the start of the Application
      // when the Tree is empty.
      return this;
}Hope this Helps
Regards
Raheel