等待jdialog关闭 [英] wait for jdialog to close

问题描述

我有一个类FilePathDialog，它扩展了JDialog，并且正在从某个类X调用该类。这是类X中的方法

I have a class FilePathDialog which extends JDialog and that class is being called from some class X. Here is a method in class X

    projectDialog = new FilePathDialog();   
    projectDialog.setVisible(true);

    projectDialog.addWindowListener(new WindowAdapter() {            
        public void windowClosing(WindowEvent e) {
            System.out.println("Window closing");
            try {
                doWork();
            } catch (Throwable t) {
                t.printStackTrace();
            }                
        }

        public void windowClosed(WindowEvent e) {
            System.out.println("Window closed");
            try {
                doWork();
            } catch (Throwable t) {
                t.printStackTrace();
            }                
        }
    });     

当JDialog窗口关闭时，doWork永远不会被调用。我所要做的就是等待JDialog在方法进行之前关闭。我也尝试过使用SwingWorker和Runnable，但这没有帮助。

doWork never gets called when the JDialog window closes. All I'm trying to do is wait for the JDialog to close before it proceeds in the method. I also tried using SwingWorker and Runnable but that did not help.

推荐答案

同样，关键是 是对话模式还是 ？

Again, the key is is the dialog modal or not?

如果它是模态的，那么就不需要WindowListener了，因为你知道对话框已被处理，因为代码将在你的<$ c $调用之后立即恢复c>对话框中的setVisible（true）。即，这应该工作：

If it's modal, then there's no need for a WindowListener as you will know that the dialog has been dealt with since code will resume immediately below your call to setVisible(true) on the dialog. i.e., this should work:

projectDialog = new FilePathDialog();   
projectDialog.setVisible(true);
doWork(); // will not be called until the dialog is no longer visible

如果另一方面它是模式 - 更少，那么一个WindowListener应该工作，你可能在这里没有显示的代码中遇到另一个问题，你要发布一个 sscce 供我们分析，运行和修改。

If on the other hand it's mode-less, then a WindowListener should work, and you've likely got another problem in code not shown here, and you'll want to post an sscce for us to analyze, run, and modify.

编辑gpeche

请查看此处SSCCE显示3种类型的默认关闭参数将触发窗口监听器：

Edit for gpeche
Please check out this SSCCE that shows that the 3 types of default closing parameters will trigger the window listener:

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

public class DialogClosing {
   private static void createAndShowGui() {
      JFrame frame = new JFrame("DialogClosing");

      JPanel mainPanel = new JPanel();
      mainPanel.add(new JButton(new MyAction(frame, JDialog.DISPOSE_ON_CLOSE, "DISPOSE_ON_CLOSE")));
      mainPanel.add(new JButton(new MyAction(frame, JDialog.HIDE_ON_CLOSE, "HIDE_ON_CLOSE")));
      mainPanel.add(new JButton(new MyAction(frame, JDialog.DO_NOTHING_ON_CLOSE, "DO_NOTHING_ON_CLOSE")));

      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.getContentPane().add(mainPanel);
      frame.pack();
      frame.setLocationByPlatform(true);
      frame.setVisible(true);
   }

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

class MyAction extends AbstractAction {
   private JDialog dialog;
   private String title;

   public MyAction(JFrame frame, int defaultCloseOp, final String title) {
      super(title);
      dialog = new JDialog(frame, title, false);
      dialog.setDefaultCloseOperation(defaultCloseOp);
      dialog.setPreferredSize(new Dimension(300, 200));
      dialog.pack();
      dialog.addWindowListener(new WindowAdapter() {
         @Override
         public void windowClosed(WindowEvent e) {
            System.out.println(title + " window closed");
         }
         @Override
         public void windowClosing(WindowEvent e) {
            System.out.println(title + " window closing");
         }
      });

      this.title = title;
   }

   @Override
   public void actionPerformed(ActionEvent arg0) {
      dialog.setVisible(true);
   }
}

这篇关于等待jdialog关闭的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！