public void paintComponent(Graphics g) {
super.paintComponent(g);
if (isTargetNode) {
DefaultMutableTreeNode destinyNode = (DefaultMutableTreeNode) dropTargetNode;
DefaultMutableTreeNode dropNode = (DefaultMutableTreeNode) draggedNode;
DefaultMutableTreeNode selectedNode =
(DefaultMutableTreeNode) dragAndDropTree.getLastSelectedPathComponent();
if ((dropNode.getAllowsChildren()
&& !dropNode.isNodeDescendant(destinyNode)
&& !destinyNode.isNodeChild(dropNode))
|| (!dropNode.getAllowsChildren()
&& !destinyNode.getUserObject().equals(selectedNode.getUserObject()))) {
g.setColor(new Color(0, 29, 255, 100));
g.fillRect(17, 0, getSize().width - 17, getSize().height - 1);
}
} else g.setColor(new Color(0, 29, 255, 0));
}
@Override
protected void paintComponent(Graphics g) {
GuiUtil.makeTextLookLessRubbish(g);
super.paintComponent(g);
}