4

是否有任何干净的方法允许用户选择 JTable 的多个非连续单元格？还是我被迫实现自己的 ListSelectionModel？

我在 JTable 上使用了 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。

4

2 回答 2

9

  1. 如果没有为 定义JTable#setSelectionMode(ListSelectionModel.SINGLE_SELECTION)，那么CTRL + MOUSE_CLICK

  2. 或者你的意思是记住最后一次选择？

  3. ListSelectionModel被JTable和使用JList。

在此处输入图像描述在此处输入图像描述在此处输入图像描述在此处输入图像描述在此处输入图像描述

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();
            }
        });
    }
于 2011-10-01T14:01:08.153 回答
7

使用MULTIPLE_INTERVAL_SELECTION，如如何使用表格：用户选​​择中所示。

附录：由于MULTIPLE_INTERVAL_SELECTIONofListSelectionModel也可用于JList，您也许可以利用后者HORIZONTAL_WRAP来获得非连续选择，如下所示。

在此处输入图像描述

安慰：

[单元格：06]
[单元格：06，单元格：16]
[单元格：06，单元格：16，单元格：18]
[单元格：06，单元格：08，单元格：16，单元格：18]

代码：

import java.awt.*;
import java.util.Arrays;
import javax.swing.*;
import javax.swing.event.*;

/**
 * @see http://stackoverflow.com/questions/7620579
 * @see http://stackoverflow.com/questions/4176343
 */
public class ListPanel extends JPanel {

    private static final int N = 5;
    private DefaultListModel dlm = new DefaultListModel();
    private JList list = new JList(dlm);

    public ListPanel() {
        super(new GridLayout());
        for (int i = 0; i < N * N; i++) {
            String name = "Cell:" + String.format("%02d", i);
            dlm.addElement(name);            
        }
        list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
        list.setLayoutOrientation(JList.HORIZONTAL_WRAP);
        list.setVisibleRowCount(N);
        list.setCellRenderer(new ListRenderer());
        list.addListSelectionListener(new SelectionHandler());
        this.add(list);
    }

    private class ListRenderer extends DefaultListCellRenderer {

        public ListRenderer() {
            this.setBorder(BorderFactory.createLineBorder(Color.red));
        }

        @Override
        public Component getListCellRendererComponent(JList list, Object
            value, int index, boolean isSelected, boolean cellHasFocus) {
            JComponent jc =  (JComponent) super.getListCellRendererComponent(
                list, value, index, isSelected, cellHasFocus);
            jc.setBorder(BorderFactory.createEmptyBorder(N, N, N, N));
            return jc;
        }
    }

    private class SelectionHandler implements ListSelectionListener {

        @Override
        public void valueChanged(ListSelectionEvent e) {
            if (!e.getValueIsAdjusting()) {
                System.out.println(Arrays.toString(list.getSelectedValues()));
            }
        }
    }

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

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

            @Override
            public void run() {
                new ListPanel().display();
            }
        });
    }
}
于 2011-10-01T14:07:29.997 回答