禁用后仍可以从JComboBox中选择

Question

我在设置JComboBox时遇到问题。用户在separte面板上有几个选项，这些选项决定是否应该启用/禁用JComboBox——我的问题是，即使禁用了JComboBox，用户仍然可以从中进行选择（当组合框变灰时，它被禁用）！JComboBox使用自定义TableCellRenderer和自定义DefaultCellEditor。JComboBox也是JTable中一行的单元格/列。

下面是代码的细分：

*JTable的编制者*

public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
    JComponent component = (JComponent) super.prepareRenderer(renderer, row, column);
       //Code which checks to see if component should be enabled
       enableComponent = false;
       component.setEnabled(enableComponent);
    }

*设置组合框*

public void setupUserCombo(){

       TableColumn col = getColumnModel().getColumn(0);
           List<String> comboUsers = new String["Adam", "Ben"]

    MyComboBoxRenderer jComboBox = (new MyComboBoxRenderer((String[])values.toArray(comboUsers ));
    col.setCellEditor(new MyComboBoxEditor((String[])values.toArray(new String[0])));
    col.setCellRenderer(jComboBox);

    repaint();
}

*TableCellRenader*

    public class MyComboBoxRenderer extends JComboBox implements TableCellRenderer {
    private static final long serialVersionUID = 1L;

    public MyComboBoxRenderer(String[] items) {
        super(items);
        repaint();
    }

    public Component getTableCellRendererComponent(JTable table, Object value,
            boolean isSelected, boolean hasFocus, int row, int column) {
        setSelectedItem("");

        if (isSelected) {
            super.setBackground(table.getSelectionBackground());
        } else {
            setForeground(table.getForeground());
            setBackground(table.getBackground());
        }

        setSelectedItem(value);

        return this;
    }

}

*DefaultCellEditor*

    public class MyComboBoxEditor extends DefaultCellEditor {
        private static final long serialVersionUID = 1L;

    public MyComboBoxEditor(String[] items) {
        super(new JComboBox(items));
    }
}

任何关于我做错了什么的建议都将不胜感激！！

谢谢，

Answer 1

>

请参阅JTable教程，了解如何使用组合框作为编辑器

@aterai查看

不存储JComponents在XxxTableModel中，然后从JComboBox中最后选择的值存储在XxxTableModel中，作为String value

Answer 2

如果要禁用表中单元格的编辑，应覆盖TableModel。iCelleditable（int，int）

在这里，您所做的只是渲染一个禁用的JComboBox，但这并不阻止编辑，它只是渲染一个禁用的JComboBox。另见http://docs.oracle.com/javase/tutorial/uiswing/components/table.html#editrender