Highlight the searched node in tree in java swing

Question

m_searchButton.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
        DefaultMutableTreeNode node = searchNode(m_searchText.getText());
        if (node != null) {
          TreeNode[] nodes = m_model.getPathToRoot(node);
          TreePath path = new TreePath(nodes);
          m_tree.scrollPathToVisible(path);
          m_tree.setSelectionPath(path);
        } else {
          System.out.println("Node with string " + m_searchText.getText() + " not found");
        }
    }
});

code for searchNode() is

public DefaultMutableTreeNode searchNode(String nodeStr) {
    DefaultMutableTreeNode node = null;
    Enumeration e = m_rootNode.breadthFirstEnumeration();
    while (e.hasMoreElements()) {
      node = (DefaultMutableTreeNode) e.nextElement();
      if (nodeStr.equals(node.getUserObject().toString())) {
        return node;
      }
    }
    return null;
}

I have written this code top search a node in tree? But I'm having trouble highlighting the found node with a blue color. Can you provide a solution?

I've not tried this, but have you tried call `repaint` on the tree?? — MadProgrammer, Sep 17 '12 at 10:26
I'm sorry, what do you mean you "can't get that"? Doesn't `m_tree.repaint()` work?? — MadProgrammer, Sep 17 '12 at 10:31

score 3 · Accepted Answer · edited May 23 '17 at 12:12

3

Your implementation of TreeCellRenderer can specify the desired color. See Customizing a Tree's Display and the examples cited here.

edited May 23 '17 at 12:12

Community

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answered Sep 17 '12 at 10:28

trashgod

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Highlight the searched node in tree in java swing

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