可编辑的JTableHeader

Question

可能的重复：
访问JtableHeader的JTEXTFIELD

如何使jtableheader作为可编辑。F.E.我将列将列列为jtextfield。我该怎么做才能使Jtextfield可编辑。请参阅示例：

import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
import java.awt.event.*;
public class Test extends JFrame {
String[][] cellValues = { { "v00", "v01", "v02" }, { "v10", "v11", "v12" },
        { "v20", "v21", "v22" }, { "v30", "v31", "v32" },
        { "v40", "v41", "v42" }, { "v50", "v51", "v52" } };
String[] columnNames = { "v00", "v01", "v02" };
javax.swing.JTable jTable1 = new javax.swing.JTable(cellValues, columnNames);
public Test() {
    try {
        jbInit();
    } catch (Exception e) {
        e.printStackTrace();
    }
}
private void jbInit() throws Exception {
    this.getContentPane().add(new JScrollPane(jTable1), null);
    for (int i = 0; i < 3; i++)
        jTable1.getColumnModel().getColumn(i)
                .setHeaderRenderer(new Renderer());
}
public static void main(String[] args) {
    Test frame = new Test();
    frame.addWindowListener(new java.awt.event.WindowAdapter() {
        public void windowClosing(WindowEvent e) {
            System.exit(0);
        }
    });
    frame.pack();
    frame.setVisible(true);
}
}
class Renderer extends JPanel implements TableCellRenderer {
JLabel label = new JLabel(" ");
JTextField field = new JTextField("%");
public Renderer() {
    super(new BorderLayout());
    add(label, BorderLayout.NORTH);
    add(field, BorderLayout.CENTER);
    setBorder(BorderFactory.createEtchedBorder());
}
public Component getTableCellRendererComponent(JTable table, Object value,
        boolean isSelected, boolean hasFocus, int row, int column) {
    label.setText(value.toString());
    return (JComponent) this;
}
public String toString() {
    return label.toString();
}
public void setText(String text) {
    label.setText(text);
}
}

Answer 1

这是一种制作可编辑标头的简单方法（无需自定义渲染器或UIS）：

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.table.*;
public class JTableEditableHeaderDemo implements Runnable
{
  private JTable table;
  private JTableHeader header;
  private JPopupMenu renamePopup;
  private JTextField text;
  private TableColumn column;
  public static void main(String[] args)
  {
    SwingUtilities.invokeLater(new JTableEditableHeaderDemo());
  }
  public JTableEditableHeaderDemo()
  {
    table = new JTable(10, 5);
    table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    table.setPreferredScrollableViewportSize(table.getPreferredSize());
    header = table.getTableHeader();
    header.addMouseListener(new MouseAdapter(){
      @Override
      public void mouseClicked(MouseEvent event)
      {
        if (event.getClickCount() == 2)
        {
          editColumnAt(event.getPoint());
        }
      }
    });
    text = new JTextField();
    text.setBorder(null);
    text.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e)
      {
        renameColumn();
      }
    });
    renamePopup = new JPopupMenu();
    renamePopup.setBorder(new MatteBorder(0, 1, 1, 1, Color.DARK_GRAY));
    renamePopup.add(text);
  }
  public void run()
  {
    JFrame f = new JFrame("Double-click header to edit");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().add(new JScrollPane(table));
    f.pack();
    f.setLocationRelativeTo(null);
    f.setVisible(true);
  }
  private void editColumnAt(Point p)
  {
    int columnIndex = header.columnAtPoint(p);
    if (columnIndex != -1)
    {
      column = header.getColumnModel().getColumn(columnIndex);
      Rectangle columnRectangle = header.getHeaderRect(columnIndex);
      text.setText(column.getHeaderValue().toString());
      renamePopup.setPreferredSize(
          new Dimension(columnRectangle.width, columnRectangle.height - 1));
      renamePopup.show(header, columnRectangle.x, 0);
      text.requestFocusInWindow();
      text.selectAll();
    }
  }
  private void renameColumn()
  {
    column.setHeaderValue(text.getText());
    renamePopup.setVisible(false);
    header.repaint();
  }
}

Answer 2

在以下链接下有一个完整的解决方案，一见钟情看起来不错！
如何使用可编辑的标头创建JTable？