java - Jtable 中单元格的行为(右键单击单元格内部)

Question

我有一个 JTable，我想通过在单元格内右键单击来打开 PopupMenu。我通过制作自己的 AbstractCellEditor 来尝试这个，但是它不起作用(当我启动我的程序并且当第一个方法初始化 CellEditor 时(这是最后一件事此方法执行的操作)，CellEditor 正在启动。但在下一个方法开始时，CellEditor 已经消失了)。有人能帮帮我吗？数周以来，我一直在努力寻找错误。

这是CellEditor的代码:

public class CellEditor extends AbstractCellEditor implements TableCellEditor {

    JTextField component;
    JPopupMenu popmen;

    CellEditor(){
        component = new JTextField();
        popmen = new JPopupMenu();

        createPopmen(component);
        component.addMouseListener(new MouseAdapter(){   
            public void mouseReleased(MouseEvent e) {
                if ( e.isPopupTrigger() )
                      popmen.show( e.getComponent(), e.getX(), e.getY() );
               }
        });  
    }

    public Component getTableCellEditorComponent1(JTable table, Object value,
            boolean isSelected, int rowIndex, int vColIndex) {      
        if (isSelected) {      
        }

        component.setText((String)value);
        return component;
    }

    public Object getCellEditorValue() {
        return component.getText();
    }

    @Override
    public Component getTableCellEditorComponent(JTable arg0, Object  arg1, boolean arg2,int arg3, int arg4) {
        return null;
    }


public void createPopmen(final JTextField text){

    // creating Popmen

}

}

这是代码的一部分，我的表发生了一些问题:

Vector<Vector> nu = new Vector<Vector>();
Vector<String> columnNames = new Vector<String>();
TableModel model;


model = new DefaultTableModel(nu, columnNames){
          public Class getColumnClass() {
              Class returnValue;
              if ((3 >= 0) && (3 < getColumnCount())) {
                System.out.println(getValueAt(0, 3));
                returnValue = getValueAt(0, 3).getClass();
              } else {
                returnValue = Object.class;
              }
              return returnValue;
            }                   
                 public boolean isCellEditable(int row, int col) {
                     if(col == 0){
                         return false;
                     }
                     else{
                         return true;
                     }

                 }
          };

    table = new JTable(model);      
    final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(model);
    table.setRowSorter(sorter);
    table.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE);
    table.getSelectionModel().addListSelectionListener(new ListSelectionListener(){
          public void valueChanged(ListSelectionEvent e){
                int a = table.getSelectedRow();
                if (!changes.contains(a) && a!=-1 && table.getSelectedColumn() != 0){
                    changes.add(a);
                    saved = false;
                }   
          }
    });



    // SearchingBar
    textfield.addKeyListener( new KeyListener(){

        @Override
        public void keyPressed(KeyEvent arg0) {

        }
        @Override
        public void keyReleased(KeyEvent arg0) {

            String searchedText =textfield.getText();       
            if (searchedText.length() == 0) {
                sorter.setRowFilter(null);
              } else {
                sorter.setRowFilter(RowFilter.regexFilter(searchedText));
              }
        }
        @Override
        public void keyTyped(KeyEvent arg0) {       
        }       
    });

    ((DefaultTableModel) model).removeRow(0);
    table.setModel(model);
    table.setCellEditor(new CellEditor());

Answer 1

应该不需要创建自定义编辑器。您应该能够执行以下操作:

JTable table = new JTable(...);
DefaultCellEditor dce = table.getDefaultEditor(Object.class);
Component editor = dce.getComponent();
editor.addMouseListener(...);

此外，请阅读 Sorting and Filtering 上的 Swing 教程部分。有关如何使用过滤的工作示例。您不应该使用 KeyListener。

如果您需要更多帮助，请发布您的 SSCCE这说明了问题。