如何使单元格表现得像可编辑但只读? [英] How to make a cell behave like it's editable but have it read only?

问题描述

我有一个JTable，我希望其中的单元格具有可编辑单元格时的行为，但是换句话说，这些单元格是不可编辑的(只读).因此，如果我双击一个单元格，则只能选择该单元格中的文本并从该单元格中复制文本.

I have a JTable in which I want the cells to behave the way it behaves when you have the cells editable, but the cells cannot be editable, in other terms, read only. So if I double click on a cell, I should only be able to select text within the cell and copy text from that cell.

推荐答案

是否可以防止用户进行任何更改?

is it possible to prevent the user to make any changes?

您将需要使用自定义编辑器:

You would need to use a custom editor:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.text.*;

public class TableCopyEditor extends JPanel
{
    public TableCopyEditor()
    {
        String[] columnNames = {"Editable", "Non Editable"};
        Object[][] data =
        {
            {"1", "one"},
            {"2", "two"},
            {"3", "three"}
        };

        JTable table = new JTable(data, columnNames);
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        JScrollPane scrollPane = new JScrollPane( table );
        add( scrollPane );

        //  Create a non-editable editor, but still allow text selection

        Caret caret = new DefaultCaret()
        {
            public void focusGained(FocusEvent e)
            {
                setVisible(true);
                setSelectionVisible(true);
            }
        };
        caret.setBlinkRate( UIManager.getInt("TextField.caretBlinkRate") );

        JTextField textField = new JTextField();
        textField.setEditable(false);
        textField.setCaret(caret);
        textField.setBorder(new LineBorder(Color.BLACK));

        DefaultCellEditor dce = new DefaultCellEditor( textField );
        table.getColumnModel().getColumn(1).setCellEditor(dce);
    }

    private static void createAndShowUI()
    {
        JFrame frame = new JFrame("Table Copy Editor");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add( new TableCopyEditor() );
        frame.pack();
        frame.setLocationByPlatform( true );
        frame.setVisible( true );
    }

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

}

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