更改JTable上的Ctrl +单击行为

当按下键盘按钮(即CTRL按钮)并选择一行时,是否有一种简单的方法来操纵JTable上的控件以提供不同的功能？我被要求创建一个表,其中行上的CTRL +单击(鼠标单击)将仅取消选择所选行,从不选择行.如果用户按CTRL +单击未选择的行,则不会发生任何事情.

我已经能够创建一个表,并禁用CTRL + A(全选)等功能,并且我已经能够检查生成MouseEvent时是否按下了控制按钮,但我似乎无法想象如何调整CTRL + Click.这是一些代码:

package nicky;

import javax.swing.*;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.*;

public class TableTester extends JPanel {
    public TableTester() {
        super(new GridLayout(1,0));

        final String[] columnNames = {"First Name",
                                      "Last Name",
                                      "Sport",
                                      "# of Years",
                                      "Vegetarian"};

        final Object[][] data = {
            {"Tom",   "Roberts","Athletic", new Integer(5),  new Boolean(false)},
            {"Sarah", "Watt",   "Football", new Integer(3),  new Boolean(true)},
            {"Laura", "Brown",  "Swimming", new Integer(2),  new Boolean(false)},
            {"Simon", "Smith",  "Tennis",   new Integer(20), new Boolean(true)},
            {"Paul",  "Jones",  "Rugby",    new Integer(10), new Boolean(false)}
        };

        JTable table = new JTable(data, columnNames);
        table.setPreferredScrollableViewportSize(new Dimension(500, 100));

        table.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);

        table.addMouseListener(new MouseListener(){
            public void mouseEntered(MouseEvent me){}
            public void mouseExited(MouseEvent me){}
            public void mouseReleased(MouseEvent me){}
            public void mouseClicked(MouseEvent me){}
            public void mousePressed(MouseEvent me){
                if (me.isControlDown()){
                    System.out.println("This is working ");
                }
            }
        });

        InputMap inputMap = table.getInputMap(JTable.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
        KeyStroke keyStroke = KeyStroke.getKeyStroke(KeyEvent.VK_A, InputEvent.CTRL_MASK);
        inputMap.put(keyStroke, "none");

        JScrollPane scrollPane = new JScrollPane(table);
        add(scrollPane);
    }

    private static void createAndShowGUI() {
        JFrame.setDefaultLookAndFeelDecorated(true);
        JFrame frame = new JFrame("TableTester");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        TableTester newContentPane = new TableTester();
        newContentPane.setOpaque(true);
        frame.setContentPane(newContentPane);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

在mousePressed方法中,我玩弄了从表中获取所有选定的行,然后检查新单击的行是否在selectedRows中...但是,我不确定是否有办法查看与MouseEvent关联的行.

(另外,我知道这样的预期行为不应该用太多,但它是复制公司中的遗留系统)

任何想法/建议将不胜感激!

好的,第二次(我离开了第一个,因为它可能会引起某些人的兴趣,其他用法,谁知道？说它是出于教育目的...... :-)).

我看了一下JTable的源代码,发现鼠标事件是由外观处理的.知道它如何处理控制键,我可以安全地覆盖changeSelection方法来做你需要的.
我发现需求有点奇怪(你仍然可以使用Shift +点击,不是吗？)但我不知道上下文.

class SpecialTable extends JTable
{
    SpecialTable(Object[][] data, String[] columnNames)
    {
        super(data, columnNames);
// That's already the default        
//        setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
    }

    /**
     * Called by javax.swing.plaf.basic.BasicTableUI.Handler.adjustSelection(MouseEvent)
     * like: table.changeSelection(pressedRow, pressedCol, e.isControlDown(), e.isShiftDown());
     */
    @Override
    public void changeSelection(int rowIndex, int columnIndex, boolean toggle, boolean extend)
    {
        if (toggle && !isRowSelected(rowIndex))
            return; // Don't do the selection
        super.changeSelection(rowIndex, columnIndex, toggle, extend);
    }
}

更简单,更准确的是你需要的!

顺便说一下,感谢提供这么简单的好测试用例,如果我不得不自己编写它,我可能没试过...... :-这是一个有趣的学习挑战.