当我从多个表中选择任何行时，我想在文本框数据中正确显示。
table1: 1。如果我点击表2中的任何一行，我也会得到table1: 1（但它应该是table2: 1。）。import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.Point;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JTextField;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableModel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class FocusTable extends JFrame {
private JPanel contentPane;
private JTextField textField; //Show selected row data here
private JTable table1;
private JTable table2;
private JTable table3;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
FocusTable frame = new FocusTable();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public FocusTable() {
setTitle("Test Focus Lost Table");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
textField = new JTextField();
contentPane.add(textField, BorderLayout.SOUTH);
textField.setColumns(10);
JTabbedPane tabbedPane = new JTabbedPane(JTabbedPane.TOP);
contentPane.add(tabbedPane, BorderLayout.CENTER);
//----------------Create JPopupMenu-----------------
JPopupMenu popupMenu = new JPopupMenu();
JMenuItem menuItemOpen = new JMenuItem("Show!");
popupMenu.add(menuItemOpen);
//---------------------------------------------------
table1 = new JTable();
table1.setComponentPopupMenu(popupMenu);
//Show menu by pressing the right button
table1.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
if (SwingUtilities.isRightMouseButton( e )) {
Point point = e.getPoint();
int column = table1.columnAtPoint(point);
int row = table1.rowAtPoint(point);
table1.changeSelection(row, column, false, false);
}
}
});
//Clear selected row
table1.addFocusListener(new FocusAdapter() {
@Override
public void focusLost(FocusEvent e) {
//textField.setText("Focus Lost table 1");
table1.clearSelection();
}
});
//Default model of Table 1
table1.setModel(new DefaultTableModel(
new Object[][] {
{"table1: 1", null, null, null, null},
{"table1: 2", null, null, null, null},
{"table1: 3", null, null, null, null},
{"table1: 4", null, null, null, null},
{"table1: 5", null, null, null, null},
{"table1: 6", null, null, null, null},
{"table1: 7", null, null, null, null},
{"table1: 8", null, null, null, null},
{"table1: 9", null, null, null, null},
},
new String[] {
"New column", "New column", "New column", "New column", "New column"
}
)
@Override
public boolean isCellEditable(int row, int column) {
//all cells false
return false;
}
});
tabbedPane.addTab("TabTable1", null, table1, null);
table2 = new JTable();
table2.setComponentPopupMenu(popupMenu);
//Show menu by pressing the right button
table2.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
if (SwingUtilities.isRightMouseButton( e )) {
Point point = e.getPoint();
int column = table2.columnAtPoint(point);
int row = table2.rowAtPoint(point);
table2.changeSelection(row, column, false, false);
}
}
});
//Clear selected row
table2.addFocusListener(new FocusAdapter() {
@Override
public void focusLost(FocusEvent e) {
//textField.setText("Focus Lost table 2");
table2.clearSelection();
}
});
//Default model of Table 2
table2.setModel(new DefaultTableModel(
new Object[][] {
{null, "table2: 1", null, null, null},
{null, "table2: 2", null, null, null},
{null, "table2: 3", null, null, null},
{null, "table2: 4", null, null, null},
{null, "table2: 5", null, null, null},
{null, "table2: 6", null, null, null},
{null, "table2: 7", null, null, null},
{null, "table2: 8", null, null, null},
{null, "table2: 9", null, null, null},
},
new String[] {
"New column", "New column", "New column", "New column", "New column"
}
){
@Override
public boolean isCellEditable(int row, int column) {
//all cells false
return false;
}
});
tabbedPane.addTab("TabTable2", null, table2, null);
table3 = new JTable();
//Clear selected row when focus lost
table3.addFocusListener(new FocusAdapter() {
@Override
public void focusLost(FocusEvent e) {
table2.clearSelection();
}
});
//Show menu by pressing the right button
table3.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
if (SwingUtilities.isRightMouseButton( e )) {
Point point = e.getPoint();
int column = table3.columnAtPoint(point);
int row = table3.rowAtPoint(point);
table3.changeSelection(row, column, false, false);
}
}
});
//Default model of Table 3
table3.setModel(new DefaultTableModel(
new Object[][] {
{null, null, "table 3: 1", null, null},
{null, null, "table 3: 2", null, null},
{null, null, "table 3: 3", null, null},
{null, null, "table 3: 4", null, null},
{null, null, "table 3: 5", null, null},
{null, null, "table 3: 6", null, null},
{null, null, "table 3: 7", null, null},
{null, null, "table 3: 8", null, null},
{null, null, "table 3: 9", null, null},
},
new String[] {
"New column", "New column", "New column", "New column", "New column"
}
){
@Override
public boolean isCellEditable(int row, int column) {
//all cells false
return false;
}
});
table3.setComponentPopupMenu(popupMenu);
tabbedPane.addTab("TabTable3", null, table3, null);
//---------------------------Checking the selected table-------------------------------
menuItemOpen.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if(table1.getSelectedRow()!=-1){
textField.setText(table1.getValueAt(table1.getSelectedRow(), 0).toString());
}else if(table2.getSelectedRow()!=-1){
textField.setText(table2.getValueAt(table2.getSelectedRow(), 1).toString());
}else if(table3.getSelectedRow()!=-1){
textField.setText(table3.getValueAt(table3.getSelectedRow(), 2).toString());
}
}
});
}
}
答案 0 :(得分：3)
不要玩FocusListener。无需清除表格选择。当用户从一个标签移动到另一个标签时，用户不希望行选择消失。所以摆脱FocusListener并保持行选择。
相反，您可以通过执行以下操作来获取当前关注的表：
menuItemOpen.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
JMenuItem mi = (JMenuItem)e.getSource();
JPopupMenu popup = (JPopupMenu)mi.getParent();
JTable table = (JTable)popup.getInvoker();
if (table.equals(table1))
{
textField.setText(table1.getValueAt(table1.getSelectedRow(), 0).toString());
}
else if (table.equals(table2))
{
textField.setText(table2.getValueAt(table2.getSelectedRow(), 1).toString());
}
else if (table.equals(table3))
{
textField.setText(table3.getValueAt(table3.getSelectedRow(), 2).toString());
}
}
});