@Nullable
public static Object getTagAtForRenderer(
CheckboxTree.CheckboxTreeCellRenderer renderer, MouseEvent e) {
JTree tree = (JTree) e.getSource();
Object tag = null;
final TreePath path = tree.getPathForLocation(e.getX(), e.getY());
if (path != null) {
final Rectangle rectangle = tree.getPathBounds(path);
assert rectangle != null;
int dx = e.getX() - rectangle.x;
final TreeNode treeNode = (TreeNode) path.getLastPathComponent();
final int row = tree.getRowForLocation(e.getX(), e.getY());
tree.getCellRenderer()
.getTreeCellRendererComponent(tree, treeNode, false, false, true, row, true);
if (treeNode instanceof RepositoryNode) {
RepositoryNode repositoryNode = (RepositoryNode) treeNode;
int checkBoxWidth =
repositoryNode.isCheckboxVisible() ? renderer.getCheckbox().getWidth() : 0;
tag = renderer.getTextRenderer().getFragmentTagAt(dx - checkBoxWidth);
} else {
tag = renderer.getTextRenderer().getFragmentTagAt(dx);
}
}
return tag;
}
/**
* Mouse Click Event.
*
* @param e MouseEvent Object.
*/
public void mouseClicked(MouseEvent e) {
int x = e.getX();
int y = e.getY();
int row = tree.getRowForLocation(x, y);
TreePath path = tree.getPathForRow(row);
if (path != null) {
CheckNode node = (CheckNode) path.getLastPathComponent();
boolean isSelected = !(node.isSelected());
node.setSelected(isSelected);
if (node.getSelectionMode() == CheckNode.DIG_IN_SELECTION) {
if (isSelected) {
tree.expandPath(path);
} else {
tree.collapsePath(path);
}
}
((DefaultTreeModel) tree.getModel()).nodeChanged(node);
if (row == 0) {
tree.revalidate();
tree.repaint();
}
}
}
