java - 在别处单击时，JTable ComboBox 会丢失值

Question

我已经为 JTable 单元格设置了一个 jCombobox 作为 DefaultCellEditor。

当我在单元格 (jCombobox) 中键入一个值时，问题就来了，每当我单击其他地方时，该值就会丢失。有人知道为什么以及我该如何解决这个问题？

table.getColumnModel().getColumn(1).setCellEditor(new SpringJobTablePopupCellEditor());

public class SpringJobTablePopupCellEditor extends AbstractCellEditor implements TableCellEditor {

    JTextField jtf;

    DefaultCellEditor other;
    DefaultCellEditor checkbox;
    private DefaultCellEditor lastSelected;
    JComboBox cbox = null;
    public SpringJobTablePopupCellEditor() {
        jtf = new JTextField();
        jtf.setDocument(new JTextFieldLimit(1000));

        other = new DefaultCellEditor(jtf);
        checkbox = new DefaultCellEditor(generateBox("10"));
    }

    @Override
    public Object getCellEditorValue() {
        return lastSelected.getCellEditorValue();
    }

    @Override
    public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
    final JTable t = table;
    cbox.getEditor().getEditorComponent().addFocusListener(new FocusListener() {

        @Override
        public void focusGained(FocusEvent e) {
            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
        }

        @Override
        public void focusLost(FocusEvent e) {
            if(t.isEditing()){
                t.getCellEditor().stopCellEditing();
            }
        }
    });
        String val = table.getModel().getValueAt(row, column - 1).toString();

        if("ak".equals(val)){
            lastSelected = checkbox;
            return checkbox.getTableCellEditorComponent(table, value, isSelected, row, column);
        }
        lastSelected = other;
        return other.getTableCellEditorComponent(table, value, isSelected, row, column);
    }

    private JComboBox generateBox(String type) {

        cbox = new JComboBox();
        cbox.setEditable(true);
        for (Map.Entry<String, String> entry : SpringJob.akMap.entrySet()) {
            cbox.addItem(entry.getValue());
        }
        return cbox;
    }

}

Answer 1

尝试

JTable table = new yourTable();
table.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE);

当您从一个组合框转到另一个组合框时，您需要强制表格停止编辑我通过向组合框添加 focusListener 并在 focuslost 添加中实现了类似的效果

public void focusLost(FocusEvent e) {
    if (table.isEditing())
        table.getCellEditor().stopCellEditing();        
    }
}