java - 单独且不连续的 JTable 单元格选择

Question

是否有任何简洁的方法允许用户选择 JTable 的多个非连续单元格？或者我被迫实现自己的 ListSelectionModel？

我尝试了 JTable 上的 setCellSelectionEnabled() 和 setSelectionModel() 方法，但我只能选择连续单元格组。

编辑:

我试过 @mKorbel 不错的 SSCCE。它适用于列表，但似乎不能完全适用于表格。这是一个 SSCCE:

import java.awt.Component;

import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;


public class TableSelection extends JFrame{
    String[] columnNames = {"First Name",
            "Last Name",
            "Sport",
            "# of Years",
            "Vegetarian"};
    Object[][] data = {
            {"Kathy", "Smith",
             "Snowboarding", new Integer(5), new Boolean(false)},
            {"John", "Doe",
             "Rowing", new Integer(3), new Boolean(true)},
            {"Sue", "Black",
             "Knitting", new Integer(2), new Boolean(false)},
            {"Jane", "White",
             "Speed reading", new Integer(20), new Boolean(true)},
            {"Joe", "Brown",
             "Pool", new Integer(10), new Boolean(false)}
        };

    public TableSelection(){
        JPanel main= new JPanel();
        JTable table = new JTable(data, columnNames){
             @Override
                protected void processMouseEvent(MouseEvent e) {
                    int modifiers = e.getModifiers() | InputEvent.CTRL_MASK;
                    // change the modifiers to believe that control key is down
                    int modifiersEx = e.getModifiersEx() | InputEvent.CTRL_MASK;
                    // can I use this anywhere?  I don't see how to change the modifiersEx of the MouseEvent
                    MouseEvent myME = new MouseEvent((Component) e.getSource(), e.getID(), e.getWhen(), modifiers, e.getX(),
                            e.getY(), e.getXOnScreen(), e.getYOnScreen(), e.getClickCount(), e.isPopupTrigger(), e.getButton());
                    super.processMouseEvent(myME);
                }

        };
        JScrollPane pane = new JScrollPane(table);
        main.add(pane);
        this.add(main);

        this.setSize(800, 600);
        this.setVisible(true);
    }
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        new TableSelection();
    }

}

我可以选择不连续的行，但不能选择单个单元格。我的意思是，例如，我希望能够选择单元格 0,0 和 3,3。

Answer 1

1. 如果未为 JTable#setSelectionMode(ListSelectionModel.SINGLE_SELECTION) 定义，则 CTRL + MOUSE_CLICK

2. 或者您的意思是记住上次选择的内容？

3. ListSelectionModel由 JTable 和 JList 使用。

import java.awt.Component;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import javax.swing.*;

public class Ctrl_Down_JList {

    private static void createAndShowUI() {
        String[] items = {"Sun", "Mon", "Tues", "Wed", "Thurs", "Fri", "Sat"};
        JList myJList = new JList(items) {

            private static final long serialVersionUID = 1L;

            @Override
            protected void processMouseEvent(MouseEvent e) {
                int modifiers = e.getModifiers() | InputEvent.CTRL_MASK;
                // change the modifiers to believe that control key is down
                int modifiersEx = e.getModifiersEx() | InputEvent.CTRL_MASK;
                // can I use this anywhere?  I don't see how to change the modifiersEx of the MouseEvent
                MouseEvent myME = new MouseEvent((Component) e.getSource(), e.getID(), e.getWhen(), modifiers, e.getX(),
                        e.getY(), e.getXOnScreen(), e.getYOnScreen(), e.getClickCount(), e.isPopupTrigger(), e.getButton());
                super.processMouseEvent(myME);
            }
        };
        JFrame frame = new JFrame("Ctrl_Down_JList");
        frame.getContentPane().add(new JScrollPane(myJList));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }

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

            @Override
            public void run() {
                createAndShowUI();
            }
        });
    }