Это нормальное поведение. При показе JPopupMenu "фокус ввода" у ячейки проподает поэтому синяя граница у ячейки и не отрисовывается. Впринцыпе можно пошаманить с методом JTable.prepareRenderer().
| Код |
import java.awt.Component;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
public class JVingradExample extends JFrame {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new JVingradExample().setVisible(true);
}
});
}
public JVingradExample() {
super("Vingrad Example");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JPopupMenu popupMenu = new JPopupMenu("PopupMenu");
popupMenu.add(new JMenuItem("MenuItem1"));
popupMenu.add(new JMenuItem("MenuItem2"));
popupMenu.add(new JMenuItem("MenuItem3"));
JTable table = new JTable(new DefaultTableModel(new String[]{"A", "B", "C", "D", "E"}, 10)) {
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Object value = getValueAt(row, column);
boolean isSelected = false;
boolean hasFocus = false;
boolean isTemporaryFocusLost = popupMenu.isVisible();
// Only indicate the selection and focused cell if not printing
if (!isPaintingForPrint()) {
isSelected = isCellSelected(row, column);
boolean rowIsLead =
(selectionModel.getLeadSelectionIndex() == row);
boolean colIsLead =
(columnModel.getSelectionModel().getLeadSelectionIndex() == column);
hasFocus = (rowIsLead && colIsLead) && (isTemporaryFocusLost || isFocusOwner());
}
return renderer.getTableCellRendererComponent(this, value,
isSelected, hasFocus,
row, column);
}
};
table.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
JTable table = (JTable) e.getSource();
if (SwingUtilities.isRightMouseButton(e)) {
int row = table.rowAtPoint(e.getPoint());
int column = table.columnAtPoint(e.getPoint());
if (row >= 0 && column >= 0) {
if (table.isEditing() && !table.getCellEditor().stopCellEditing()) {
return ;
}
table.changeSelection(row, column, false, false);
}
}
showPopupMenu(e);
}
@Override
public void mouseReleased(MouseEvent e) {
showPopupMenu(e);
}
void showPopupMenu(MouseEvent e) {
if (e.isPopupTrigger()) {
popupMenu.show(e.getComponent(), e.getX(), e.getY());
}
}
});
add(new JScrollPane(table));
pack();
setLocationRelativeTo(null);
}
}
|
Код метод prepareRenderer полностью взят из исходников Swing-а. |