自定义渲染器后JTable列无法编辑 [英] JTable Column not editable after custom renderer

问题描述

这是对此处发布的问题的跟进。

This is a follow up to the question posted here.

我按照答案中的说明操作，它就像一个魅力。但是，无法编辑日期列：我无法在填充的表格中选择任何 JDateChooser 。

I've followed the instructions in the answer, and it worked like a charm. However, the date column cannot be edited: I cannot select any JDateChooser within the populated table.

如上所述早先的问题，我正在使用MVC模式。当我从视图中填充 JTable 和 setCellRenderer 时，它可以正常工作。只有当我从我的控制器填充 setCellRenderer 时才会启用日期列。

As mentioned in the earlier question, I'm using an MVC pattern. When I populate the JTable and setCellRenderer from within the view, it works fine. It is only when I populate and setCellRenderer from my controller that the date column isn't enabled.

这是渲染器：

public class JDateChooserRenderer extends JDateChooser implements TableCellRenderer{

Date inDate;

@Override
public Component getTableCellRendererComponent(JTable table, Object value,
        boolean isSelected, boolean hasFocus, int row, int column) {
    // TODO Auto-generated method stub

    if (value instanceof Date){
        this.setDate((Date) value);
    } else if (value instanceof Calendar){
        this.setCalendar((Calendar) value);
    }
    this.setEnabled(true);
    return this;
}

以下是我视图中的代码：

Here is the code from my view which works:

scrollPanePermits = new JScrollPane();
    tableVehiclePermitHeader = new String[] {"Name", "Expiration Date"};
    tableVehiclePermitData = new Object[0][0];


    Calendar tempDate = new GregorianCalendar(2008, 1, 1);
    Date tempDate1 = new Date(2008, 1, 1);
    tempDate1.setYear(tempDate1.getYear() - 1900);
    tableVehiclePermitData = new Object [][] {{"Hello", tempDate}, {"Hello", tempDate1}};

    tableVehiclePermitDefaultTableModel = new DefaultTableModel(tableVehiclePermitData, tableVehiclePermitHeader);
    tableVehiclePermit = new JTable(tableVehiclePermitDefaultTableModel){
        public Class getColumnClass(int c) {
            return getValueAt(0, c).getClass();
         }
        @Override
        public boolean isCellEditable(int rowIndex, int colIndex){
            if (colIndex == 0){
                return false;
            } else {
                return true;
            }
        }
    };

    tableVehiclePermit.getColumn("Expiration Date").setCellRenderer(new JDateChooserRenderer());
    tableVehiclePermit.getColumn("Expiration Date").setCellEditor(new JDateChooserCellEditor());

最后，这是我的控制器填充表格的代码，但是日期列不可编辑：

Finally, this is the code from my controller that populates the table, but the date column is not editable:

permitListData = new Object[vehPermit.size()][3];
        Iterator it = vehPermit.iterator();
        int i = 0;
        while (it.hasNext()){
            permitData = (VehiclePermitExpirationByVehicleDao) it.next();
            permitListData[i][0] = permitData.getVehiclePermitName();
            permitListData[i][1] = permitData.getExpirationDate();
            permitListData[i][2] = permitData.getVehiclePermitId();
            i++;

        }
        gui.setTableVehiclePermitData(permitListData);
        gui.getTableVehiclePermitDefaultTableModel().setDataVector(gui.getTableVehiclePermitData(), gui.getTableVehiclePermitHeader());
        gui.getTableVehiclePermit().setModel(gui.getTableVehiclePermitDefaultTableModel());

//      TableColumn dateColumn = gui.getTableVehiclePermit().getColumnModel().getColumn(1);
//      dateColumn.setCellRenderer(new JDateChooserRenderer());

        gui.getTableVehiclePermit().getColumn("Expiration Date").setCellRenderer(new JDateChooserRenderer());

        gui.getTableVehiclePermit().setEnabled(true);

其中gui是我观点的一个实例。

where gui is an instance of my view.

我只知道在创建表时覆盖isCellEditable方法，以便将单元格设置为可编辑或不可编辑。关于如何解决这个问题的想法，或者我做错了什么？

I only know of overriding the isCellEditable method, when creating the table, in order to set cells as editable or not. Any ideas on how to go about this, or what I'm doing wrong?

任何帮助都将不胜感激。

Any help would be greatly appreciated.

推荐答案

开始测试 com.toedter.calendar.demo.DemoTable 可能会有所帮助，如下所示。注意行

It might help to start with a test of com.toedter.calendar.demo.DemoTable, shown below. Note how the line

table.setDefaultEditor(Date.class, new JDateChooserCellEditor());

指定默认值编辑器，用于类型 Date.class ：

specifies the default editor for model values of type Date.class:

@Override
public Class getColumnClass(int c) {
    return getValueAt(0, 1).getClass();
}

import com.toedter.calendar.demo.DemoTable;
import java.awt.EventQueue;
import java.awt.GridLayout;
import javax.swing.JFrame;

/** @see http://stackoverflow.com/a/14880675/230513 */
public class TableTest {

    private void display() {
        JFrame f = new JFrame("TableTest");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(new DemoTable());
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                new TableTest().display();
            }
        });
    }
}

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