我从JFrame上的按钮打开了父JDialog。父JDialog本身有一个子JDialog,它从父对话框的按钮打开。当我关闭父对话框并使用框架上的按钮再次打开它时,我不希望子对话框也打开。
是否有办法阻止子对话框打开,除非用户明确按下父对话框上的按钮?
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class MultiDialog {
public static void main(String[] args) {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
final JDialog d1 = new JDialog();
final JDialog d2 = new JDialog(d1);
d1.setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE);
d2.setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE);
d1.setSize(new Dimension(150, 100));
d1.setTitle("Parent");
d1.setLocation(50, 50);
d2.setTitle("Child");
d2.setSize(new Dimension(100, 100));
d2.setLocation(150, 150);
JFrame f = new JFrame("App");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton b1 = new JButton("Show Parent Dialog");
f.add(b1);
b1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
d1.setVisible(true);
}
});
JButton b2 = new JButton("Show Child Dialog");
d1.add(b2);
b2.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
d2.setVisible(true);
}
});
f.pack();
f.setVisible(true);
}
}
);
}
}
答案 0 :(得分:1)
向您的父WindowListener
添加JDialog
,并使用windowClosing
方法覆盖它。
从现在开始,当您关闭家长时,孩子的visible
属性将变为false,直到我们再次点击“家长”按钮为止。
d1.addWindowListener(new WindowAdapter(){
@Override
public void windowClosing(WindowEvent arg0) {
d2.setVisible(false);
};
});
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class MultiDialog {
public static void main(String[] args) {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
final JDialog d1 = new JDialog();
final JDialog d2 = new JDialog(d1);
d1.setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE);
d2.setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE);
d1.setSize(new Dimension(150, 100));
d1.setTitle("Parent");
d1.setLocation(50, 50);
d2.setTitle("Child");
d2.setSize(new Dimension(100, 100));
d2.setLocation(150, 150);
JFrame f = new JFrame("App");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton b1 = new JButton("Show Parent Dialog");
f.add(b1);
b1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
d1.setVisible(true);
}
});
d1.addWindowListener(new WindowAdapter(){
@Override
public void windowClosing(WindowEvent arg0) {
d2.setVisible(false);
};
});
JButton b2 = new JButton("Show Child Dialog");
d1.add(b2);
b2.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
d2.setVisible(true);
}
});
f.pack();
f.setVisible(true);
}
}
);
}
}