怎样实现双击label后转换为textfield

[cliffsun]

使用GridBagLayout布局，
想通过双击页面中的Label，使原来Label位置处转换为可编辑的textfield
请问如何实现这两个类的转化

[gtlang78]

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

public class EditableTextField extends JPanel
implements MouseListener, KeyListener, FocusListener, ActionListener
{
private JLabel label = new JLabel();
private JTextField textfield = new JTextField();
private CardLayout cardLayout;

public EditableTextField(String text, int textFieldColumns)
{
super(null);
setLayout(cardLayout = new CardLayout());

add(label, "label");
add(textfield, "textfield");

setText(text);
textfield.setColumns(textFieldColumns);
label.setBorder(BorderFactory.createLineBorder(Color.lightGray));
label.addMouseListener(this);
textfield.addKeyListener(this);
textfield.addFocusListener(this);
textfield.addActionListener(this);
}

public void mousePressed(MouseEvent e) {
if (e.getClickCount() == 2 && (e.getModifiers() & MouseEvent.BUTTON1_MASK) != 0) {
cardLayout.show(this, "textfield");
textfield.setText(label.getText());
textfield.selectAll();
textfield.requestFocusInWindow();
}
}

public void actionPerformed(ActionEvent e) {
cardLayout.show(this, "label");
label.setText(textfield.getText());
}

public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ESCAPE) {
cardLayout.show(this, "label");
}
}

public void focusLost(FocusEvent e) {
cardLayout.show(this, "label");
label.setText(textfield.getText());
}

public void setText(String text) {
this.label.setText(text);
this.textfield.setText(text);
}

public String getText() {
return label.getText();
}

public void mouseClicked(MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void keyTyped(KeyEvent e) {}
public void keyReleased(KeyEvent e) {}
public void focusGained(FocusEvent e) {}

public static void main(String[] args) {
EditableTextField etf1 = new EditableTextField("Hello", 10);
EditableTextField etf2 = new EditableTextField("World", 10);
EditableTextField etf3 = new EditableTextField("你好", 10);

JFrame f = new JFrame();
((JComponent) f.getContentPane()).setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
f.getContentPane().setLayout(new GridLayout(0, 1, 5, 5));
f.getContentPane().add(etf1);
f.getContentPane().add(etf2);
f.getContentPane().add(etf3);
f.pack();
f.setLocationRelativeTo(null);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}

[rongdajian]

我觉得可以在Label上实现一个动作，当单击它的时候就激活JtextArea
，这样做，我觉得 还是可以！

[十分钟年华老去]

转化就算了吧，你可以做两个，一个显示在上面，另一个等着激活。就设置显示不显示就行了

[cliffsun]

你是说做两个Panel吗？设置显示不显示来切换显示和设置状态吗？

现在我是想
把Label位置的控件换成显示textfield。编辑完成后再回到使用label的显示状态。

因为页面上有很多Label需要改变成编辑状态

[aaa2003gf]

你写个函数重新布下局，处理下，双击label后调用处理函数，然后重新刷下界面