protected void toggleSelections() {
int[] indices = _list.getSelectedIndices();
CheckBoxListSelectionModel selectionModel = _list.getCheckBoxListSelectionModel();
selectionModel.removeListSelectionListener(this);
selectionModel.setValueIsAdjusting(true);
try {
if (indices.length > 0) {
boolean selected = selectionModel.isSelectedIndex(indices[0]);
for (int index : indices) {
if (!_list.isCheckBoxEnabled(index)) {
continue;
}
if (selected && selectionModel.isSelectedIndex(index)) {
selectionModel.removeSelectionInterval(index, index);
} else if (!selected && !selectionModel.isSelectedIndex(index)) {
selectionModel.addSelectionInterval(index, index);
}
}
}
} finally {
selectionModel.setValueIsAdjusting(false);
selectionModel.addListSelectionListener(this);
_list.repaint();
}
}
protected boolean clicksInCheckBox(MouseEvent e) {
int index = _list.locationToIndex(e.getPoint());
Rectangle bounds = _list.getCellBounds(index, index);
if (bounds != null) {
if (_list.getComponentOrientation().isLeftToRight()) {
return e.getX() < bounds.x + hotspot;
} else {
return e.getX() > bounds.x + bounds.width - hotspot;
}
} else {
return false;
}
}
protected void toggleSelection(int index) {
if (!_list.isEnabled() || !_list.isCheckBoxEnabled(index)) {
return;
}
CheckBoxListSelectionModel selectionModel = _list.getCheckBoxListSelectionModel();
boolean selected = selectionModel.isSelectedIndex(index);
selectionModel.removeListSelectionListener(this);
try {
if (selected) selectionModel.removeSelectionInterval(index, index);
else selectionModel.addSelectionInterval(index, index);
} finally {
selectionModel.addListSelectionListener(this);
_list.repaint();
}
}
public void intervalRemoved(ListDataEvent e) {
/* Sync the SelectionModel with the DataModel.
*/
ListSelectionModel listSelectionModel = _list.getCheckBoxListSelectionModel();
if (listSelectionModel != null) {
listSelectionModel.removeIndexInterval(e.getIndex0(), e.getIndex1());
}
}
public void mousePressed(MouseEvent e) {
if (e.isConsumed()) {
return;
}
if (!_list.isCheckBoxEnabled()) {
return;
}
boolean clickInBox = clicksInCheckBox(e);
if (!_list.isClickInCheckBoxOnly() || clickInBox) {
int index = _list.locationToIndex(e.getPoint());
toggleSelection(index);
if (clickInBox) {
e.consume();
}
}
}
public void propertyChange(PropertyChangeEvent evt) {
if (evt.getOldValue() instanceof ListModel) {
((ListModel) evt.getOldValue()).removeListDataListener(this);
}
if (evt.getNewValue() instanceof ListModel) {
_list.getCheckBoxListSelectionModel().setModel((ListModel) evt.getNewValue());
((ListModel) evt.getNewValue()).addListDataListener(this);
}
}
public void keyPressed(KeyEvent e) {
if (e.isConsumed()) {
return;
}
if (!_list.isCheckBoxEnabled()) {
return;
}
if (e.getModifiers() == 0 && e.getKeyChar() == KeyEvent.VK_SPACE) toggleSelections();
}
public void intervalAdded(ListDataEvent e) {
int minIndex = Math.min(e.getIndex0(), e.getIndex1());
int maxIndex = Math.max(e.getIndex0(), e.getIndex1());
/* Sync the SelectionModel with the DataModel.
*/
ListSelectionModel listSelectionModel = _list.getCheckBoxListSelectionModel();
if (listSelectionModel != null) {
listSelectionModel.insertIndexInterval(minIndex, maxIndex - minIndex + 1, true);
}
}
public void mouseReleased(MouseEvent e) {
if (e.isConsumed()) {
return;
}
if (!_list.isCheckBoxEnabled()) {
return;
}
if (clicksInCheckBox(e)) {
e.consume();
}
}
protected void toggleSelection() {
int index = _list.getSelectedIndex();
toggleSelection(index);
}
public void valueChanged(ListSelectionEvent e) {
_list.repaint();
}