public Component getTreeCellRendererComponent(
JTree tree,
Object value,
boolean selected,
boolean expanded,
boolean leaf,
int row,
boolean hasFocus) {
Component renderer =
delegate.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
if (!showRootNodeCheckBox && tree.getModel().getRoot() == value) return renderer;
TreePath path = tree.getPathForRow(row);
if (path != null) {
if (checkBoxCustomer != null && !checkBoxCustomer.showCheckBox(path)) return renderer;
if (selectionModel.isPathSelected(path, selectionModel.isDigged()))
checkBox.getTristateModel().setState(TristateState.SELECTED);
else
checkBox
.getTristateModel()
.setState(
selectionModel.isDigged() && selectionModel.isPartiallySelected(path)
? TristateState.INDETERMINATE
: TristateState.DESELECTED);
}
removeAll();
add(checkBox, BorderLayout.WEST);
add(renderer, BorderLayout.CENTER);
return this;
}
/**
* Constructor.
*
* @param tree a JTree
*/
public CheckTreeManager(JTree tree) {
this.tree = tree;
selectionModel = new CheckTreeSelectionModel(tree.getModel());
tree.setCellRenderer(new CheckTreeCellRenderer(tree.getCellRenderer(), selectionModel));
tree.addMouseListener(this);
tree.addMouseMotionListener(this);
selectionModel.addTreeSelectionListener(this);
}
/**
* Handles mouse click events.
*
* @param e the mouse event
*/
public void mouseClicked(MouseEvent e) {
TreePath path = tree.getPathForLocation(e.getX(), e.getY());
if (path == null) return;
if (e.getX() > tree.getPathBounds(path).x + hotspot) return;
boolean selected = selectionModel.isAncestorSelected(path);
try {
ignoreEvents = true;
if (selected) {
selectionModel.removeSelectionPath(path);
} else {
selectionModel.addSelectionPath(path);
}
} finally {
ignoreEvents = false;
tree.treeDidChange();
}
}