java – 在编辑时如何选择JTable单元格中的所有文本

我想让我的可编辑JTables中的编辑器在开始编辑时选择单元格中的所有文本.我已经尝试了几个关于从TableCellEditor.getTableCellEditorComponent方法返回的组件上调用JTextComponent.selectAll()的东西.没有一件事,我试过工作.

在我最近的尝试中,我从Swing教程中修改了SimpleTableDemo类,以使用调用selectAll方法的自定义TableCellEditor.在调试器中,我可以看到selectAll()方法被调用,但是表格仍然进入编辑模式,而不选择单元格中的文本(或者可能在显示之前清除选择).该代码在下面.有人可以告诉我我哪里错了吗？

import javax.swing.DefaultCellEditor;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
import javax.swing.text.JTextComponent;

import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class SimpleTableDemo extends JPanel {
    private boolean DEBUG = false;

    public SimpleTableDemo() {
        super(new GridLayout(1,0));

        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),{"Jane","White","Speed reading",new Integer(20),{"Joe","brown","Pool",new Integer(10),new Boolean(false)}
        };

        final JTable table = new SelectingTable(data,columnNames);
        table.setPreferredScrollableViewportSize(new Dimension(500,70));
        table.setFillsViewportHeight(true);

        if (DEBUG) {
            table.addMouseListener(new MouseAdapter() {
                public void mouseClicked(MouseEvent e) {
                    printDebugData(table);
                }
            });
        }

        //Create the scroll pane and add the table to it.
        JScrollPane scrollPane = new JScrollPane(table);

        //Add the scroll pane to this panel.
        add(scrollPane);
    }

    private void printDebugData(JTable table) {
        int numRows = table.getRowCount();
        int numCols = table.getColumnCount();
        javax.swing.table.TableModel model = table.getModel();

        System.out.println("Value of data: ");
        for (int i=0; i 

解决方法

Table Select All Editor应该适合你.这是首选解决方案,因此您不必继续创建自定义编辑器.那就是包含整数的列只能接受整数.与您当前的代码

您的代码部分工作.如果您使用F2键开始编辑,则会选择文本.但是,当您使用鼠标并双击单元格时,第二个鼠标事件将传递给编辑器,因此插入符可以放置在您单击的位置,这将删除选择.解决方案是：

final JTextComponent jtc = (JTextComponent)c;
jtc.requestFocus();
//jtc.selectAll();
SwingUtilities.invokelater(new Runnable()
{
    public void run()
    {
        jtc.selectAll();
    }
});

原文地址：https://www.jb51.cc/java/123180.html