将JDialog从MODELESS更改为APPLICATION_MODAL两次打开JDialog

Question

我有一个非常奇怪的行为，我只能得出结论，一定是某个地方的Java bug。

我更改了构造函数中的一行

super(parent, "Production Plan Export", ModalityType.MODELESS);

至

super(parent, "Production Plan Export", ModalityType.APPLICATION_MODAL);

突然，当我点击按钮打开我的JDialog，它打开它两次，第一次，它完全没有反应。我需要点击X按钮关闭窗口，然后当我关闭时，同样的JDialog出现，突然我的所有按钮打开。

以前有人见过这种行为吗？

我正在使用Java 1.6.0_33

编辑非常奇怪的是，当我尝试在eclipse中调试它并在构造器上设置一个断点时，我转到下一行，然后它突然跳到类中的变量，开始遍历变量，而不是构造函数中的下一行。

我试着重新启动我的电脑和eclipse，但是这没有起作用。我会看看能否创建一个小的测试用例

Edit2:

好的，所以我创建了一个小应用程序，可以为我复制它。请注意，我已经尝试删除代码中与此无关的部分，因此有许多代码对此测试用例无效。

import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JEditorPane;
import javax.swing.JFormattedTextField;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.SwingUtilities;

@SuppressWarnings("serial")
public class ProductionPlanExportDialog extends JDialog {

    private JProgressBar progressbar;
    private JLabel message;
    private JButton exportButton;
    private JButton helpButton;

    private int state = JOptionPane.CANCEL_OPTION;
    private final Action closeAction = new CloseAction();
    private final Action enableExport = new EnableExport();
    private boolean updating = false;

    private JButton closeButton;

    public ProductionPlanExportDialog(Window parent) {
        super(parent, "Test", ModalityType.APPLICATION_MODAL); //The JDialog is not centered, and the close button doesn't work
//      super(parent, "Test", ModalityType.MODELESS); //The close button works and the jdialog is centered
        initGUI();
        bindModel();

        setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
        this.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                super.windowClosing(e);
                close();
            }
        });
    }

    public static void main(String args[]) {
        new ProductionPlanExportDialog(null);
    }

    public void initGUI() {
        JTabbedPane mainTabbedPane = new JTabbedPane(JTabbedPane.TOP);

        JPanel yAxisPanel = new JPanel();
        yAxisPanel.setLayout(new BoxLayout(yAxisPanel, BoxLayout.Y_AXIS));


        JPanel progressPanel = new JPanel(new FlowLayout());
        progressPanel.add(getProgressbar());
        yAxisPanel.add(progressPanel);
        yAxisPanel.add(getMessage());

        JPanel buttonPanel = new JPanel(new FlowLayout()); 
        buttonPanel.add(getExportButton());
        closeButton = new JButton("Close");
        buttonPanel.add(closeButton);
        buttonPanel.add(getHelpButton());

        yAxisPanel.add(buttonPanel);

        setSize(937, 605);
        getContentPane().add(yAxisPanel);
        setVisible(true);
        setLocationRelativeTo(null);
    }

    private void bindModel() {
        closeButton.setAction(closeAction);
    }

    public int getExitStatus() {
        return state;
    }

    private JProgressBar getProgressbar() {
        if (progressbar == null) {
            progressbar = new JProgressBar();
            progressbar.setPreferredSize(new Dimension(1000, 22));
            progressbar.setName("progressbar");
            progressbar.setStringPainted(true);
            progressbar.setVisible(false);
        }
        return progressbar;
    }

    private JLabel getMessage() {
        if (message == null) {
            message = new JLabel();
            message.setName("message");
        }
        return message;
    }

    private void setUIState() {
        updating = true;
        assert SwingUtilities.isEventDispatchThread();
        try {
            closeButton.setEnabled(false);

        } finally {
            updating = false;
        }
    }

    private void setTextFieldValue(JFormattedTextField textField, long value) {
        if(value == Long.MAX_VALUE || value == -Long.MAX_VALUE) {
            textField.setText("");
        } else {
            textField.setValue(value);
        }
    }

    public JButton getExportButton() {
        if (exportButton == null) {
            exportButton = new JButton();
            exportButton.setToolTipText("Preview production plan");
            exportButton.setName("exportButton");
            exportButton.setText("Preview");
            exportButton.setBounds(305, 640, 72, 21);

            exportButton.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {

                }
            });
        }
        return exportButton;
    }

    private JButton getHelpButton() {
        if (helpButton == null) {
            helpButton = new JButton();
            helpButton.setBounds(470, 640, 72, 21);
            helpButton.setName("helpButton");
            helpButton.setText("Help");
            helpButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent evt) {
                    String helpText = "This dialog is used to preview and export a production plan.<br/>" +
                            "<h1>Preview</h1>" 
                            + "After pressing 'Export', the production plan will be generated. This can take a few minutes.";

                    JEditorPane helpEditorPane = new JEditorPane("text/html", helpText); 
                    helpEditorPane.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 12));
                    helpEditorPane.setEditable(false); 
                    JScrollPane scrollPane = new JScrollPane(helpEditorPane,
                            JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                            JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);  
                    helpEditorPane.setCaretPosition(0);
                    scrollPane.setPreferredSize(new Dimension(640,445));
                    JOptionPane.showMessageDialog(helpButton, scrollPane, "Production Plan Export Dialog Help", JOptionPane.INFORMATION_MESSAGE);
                }
            });
        }
        return helpButton;
    }

    private final class EnableExport extends AbstractAction {
        @Override
        public void actionPerformed(final ActionEvent e) {
            if(isAllCheckboxSelected()) {
                getExportButton().setText("Export");
                getExportButton().setToolTipText("Export production plan");
            } else {
                getExportButton().setText("Preview");
                getExportButton().setToolTipText("Preview production plan");
            }
        }
    }

    boolean enableExport()  {
        return isAllCheckboxSelected();
    }

    boolean isAllCheckboxSelected()  {
        return false;
    }

    private final class CloseAction extends AbstractAction {
        public CloseAction() {
            super("Close");
        }

        @Override
        public void actionPerformed(final ActionEvent e) {
            close();
        }
    }

    private void close() {
        state = JOptionPane.OK_OPTION;
        setVisible(false);
        dispose();
    }
}

Answer 1

不能.，你能不能(关于Bug的描述)来测试

import java.awt.Cursor;
import java.awt.Dialog.ModalityType;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;

public class Main {

    public static void main(String[] args) {
        final JFrame frame = new JFrame();
        frame.setSize(new Dimension(500, 500));

        final JDialog dialog = new JDialog(frame, "Production Plan Export", 
                ModalityType.MODELESS);
        dialog.setSize(300, 300);

        final JDialog dialog1 = new JDialog(dialog, "Production Plan Export", 
                ModalityType.APPLICATION_MODAL);
        dialog1.setSize(200, 200);

        frame.add(new JButton(new AbstractAction("Dialog") {

            private static final long serialVersionUID = 1L;

            @Override
            public void actionPerformed(ActionEvent e) {
                frame.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
                Runnable doRun = new Runnable() {

                    public void run() {
                        dialog.setVisible(true);
                        dialog1.setVisible(true);
                    }
                };
                SwingUtilities.invokeLater(doRun);
            }
        }));
        frame.setVisible(true);
    }
}

Answer 2

我发现了问题。

这是因为我有过两次setVisible(true)。一次在我的initGUI()方法中，一次在我初始化JDialog的地方。

还多亏了MKorbel，我在setAction ()中移动了initGUI()中的setAction调用，这使得按钮在拥有APPLICATION_MODAL时工作