当列移动时，如何同步两个JTable和JTableHeader？

Question

我有两个JTable，它们必须同步所有的方式。这两个JTable被设置为允许录制。

因此，我想知道如何在列移动时同步JTableHeader行为。

非常感谢，伙计。

Answer 1

为此，您可以使用具有TableColumnModelListener的columnMoved(TableColumnModelEvent arg0)。允许您根据源表交换其他表中的列。示例代码：

import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.TableColumnModelEvent;
import javax.swing.event.TableColumnModelListener;
import javax.swing.table.DefaultTableModel;

public class Example {

    public static void main(String[] args) {
        new Example();
    }

    public Example() {
        JFrame frame = new JFrame("Rotation");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JTable t = new JTable(new DefaultTableModel(new Object[][]{{1,2}},new Object[]{"1","2"}));
        final JTable t1 = new JTable(new DefaultTableModel(new Object[][]{{1,2}},new Object[]{"1","2"}));

        frame.getContentPane().add(new JScrollPane(t),BorderLayout.WEST);
        frame.getContentPane().add(new JScrollPane(t1),BorderLayout.EAST);

        t.getColumnModel().addColumnModelListener(new TableColumnModelListener() {

            @Override
            public void columnSelectionChanged(ListSelectionEvent arg0) {
            }

            @Override
            public void columnRemoved(TableColumnModelEvent arg0) {
            }

            @Override
            public void columnMoved(TableColumnModelEvent arg0) {
                int fromIndex = arg0.getFromIndex();
                int toIndex = arg0.getToIndex();
                t1.moveColumn(fromIndex, toIndex);
            }

            @Override
            public void columnMarginChanged(ChangeEvent arg0) {
            }

            @Override
            public void columnAdded(TableColumnModelEvent arg0) {
            }
        });

        frame.pack();
        frame.setVisible(true);
    }

}

Answer 2

我的代码如下所示

 public static void syncTableColumnOrder(final JTable main, final JTable... tables) {

    /* if table is not reordering-allowed, this method is meaningless */
    if (!main.getReorderingAllowed()) 
        return;

    /* if two tables trigger event each other, it'll be infinite loop */
    for (JTable table : tables) {
        if (table == null) continue;
        table.setReorderingAllowed(false);
    }

    /* when main table moves coloumn, effect others */
    main.getColumnModel().addColumnModelListener(new TableColumnModelListener() {
        @Override
        public void columnAdded(TableColumnModelEvent e) {}
        @Override
        public void columnRemoved(TableColumnModelEvent e) {}
        @Override
        public void columnMoved(TableColumnModelEvent e) {
            for (JTable table : tables) {
                table.moveColumn(e.getFromIndex(), e.getToIndex());
            }
        }
        @Override
        public void columnMarginChanged(ChangeEvent e) {}
        @Override
        public void columnSelectionChanged(ListSelectionEvent e) {}
    });
}