JPopup菜单模式

Question

我不完全确定"模态"是否是我需要描述问题的正确术语，但我有一个带有JDialog的独立应用程序。JDialog 设置为阻止应用程序的所有其他部分，直到对话框关闭。我最近开始使用JPopupMenu添加一种自动建议功能。这在应用程序的其余部分工作正常，但是当尝试将其作为对话框的一部分时，我似乎无法单击弹出窗口，我认为这是因为对话框的模式排除类型。有谁知道解决这个问题的黑客？

用于启动 JDialog 的代码：

NewPlayerDialog dialog = new NewPlayerDialog();
dialog.setLocation(Main.getWindow().getLocation().x + Main.getWindow().getWidth()/2 - dialog.getWidth()/2, Main.getWindow().getLocation().y + Main.getWindow().getHeight()/2 - dialog.getHeight()/2);
dialog.setModalExclusionType(ModalExclusionType.APPLICATION_EXCLUDE);
dialog.setResizable(false);
dialog.setVisible(true);

JDialog 中的代码：

package com.etan.bracketrunner2;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JTextField;
import javax.swing.event.PopupMenuEvent;
import javax.swing.event.PopupMenuListener;
import com.etan.dbhs.DBHSDatabaseIntermediary;
import com.etan.dbhs.DBHSPlayerInitializer;
import com.etan.widgets.UnderlinedLabel;
@SuppressWarnings("serial")
public class NewPlayerDialog extends JDialog implements ActionListener, MouseListener {
    private JTextField fnTextField;
    private JPopupMenu fnPopup;
    private ActionListener fnActionListener;
    private JTextField lnTextField;
    private JPopupMenu lnPopup;
    private ActionListener lnActionListener;
    private JTextField idTextField;
    private JTextField handicapTextField;
    private JButton okButton;
    private JButton cancelButton;
    /**
     * Constructor
     */
    public NewPlayerDialog() {
        super(Main.getWindow(), "New Player", Dialog.ModalityType.TOOLKIT_MODAL);
        Font font = new Font("Arial Black", Font.PLAIN, 14);
        JLabel fnLabel = new UnderlinedLabel("First Name");
        fnLabel.setForeground(Color.BLACK);
        fnLabel.setFont(font);
        JPanel fnLabelPanel = new JPanel();
        fnLabelPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
        fnLabelPanel.add(fnLabel);
        JLabel lnLabel = new UnderlinedLabel("Last Name");
        lnLabel.setForeground(Color.BLACK);
        lnLabel.setFont(font);
        JPanel lnLabelPanel = new JPanel();
        lnLabelPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
        lnLabelPanel.add(lnLabel);
        JLabel idLabel = new UnderlinedLabel("ID#");
        idLabel.setForeground(Color.BLACK);
        idLabel.setFont(font);
        JPanel idLabelPanel = new JPanel();
        idLabelPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
        idLabelPanel.add(idLabel);
        JLabel handicapLabel = new UnderlinedLabel("Handicap");
        handicapLabel.setForeground(Color.BLACK);
        handicapLabel.setFont(font);
        JPanel handicapLabelPanel = new JPanel();
        handicapLabelPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
        handicapLabelPanel.add(handicapLabel);
        JPanel labelPanel = new JPanel();
        labelPanel.setLayout(new GridLayout(1, 4));
        labelPanel.add(fnLabelPanel);
        labelPanel.add(lnLabelPanel);
        labelPanel.add(idLabelPanel);
        labelPanel.add(handicapLabelPanel);
        fnTextField = new JTextField(7);
        fnTextField.setForeground(Color.BLACK);
        fnTextField.setFont(font);
        fnPopup = new JPopupMenu();
        PopupMenuListener fnListener = new PopupMenuListener() {
            @Override
            public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
                fnPopup.setLocation(fnTextField.getLocationOnScreen().x,
                        fnTextField.getLocationOnScreen().y + fnTextField.getHeight());
                fnPopup.setPopupSize(fnTextField.getWidth(), fnPopup.getComponentCount() * 20);
            }
            @Override
            public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
                ;
            }
            @Override
            public void popupMenuCanceled(PopupMenuEvent e) {
                ;
            }
        };
        fnPopup.addPopupMenuListener(fnListener);
        fnTextField.setComponentPopupMenu(fnPopup);
        fnActionListener = new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                fnTextField.setText(e.getActionCommand());
                fnPopup.setVisible(false);
            }// ends actionPerformed()
        };
        FocusListener fnFocusListener = new FocusListener() {
            @Override
            public void focusGained(FocusEvent e) {
                resetFirstNamePopup();
            }
            @Override
            public void focusLost(FocusEvent e) {
                fnPopup.setVisible(false);
            }
        };
        KeyListener fnKeyListener = new KeyListener() {
            @Override
            public void keyTyped(KeyEvent e) {
                ;
            }
            @Override
            public void keyPressed(KeyEvent e) {
                ;
            }
            @Override
            public void keyReleased(KeyEvent e) {
                resetFirstNamePopup();
            }
        };
        fnTextField.addActionListener(fnActionListener);
        fnTextField.addFocusListener(fnFocusListener);
        fnTextField.addKeyListener(fnKeyListener);
        lnTextField = new JTextField(7);
        lnTextField.setForeground(Color.BLACK);
        lnTextField.setFont(font);
        lnPopup = new JPopupMenu();
        PopupMenuListener lnListener = new PopupMenuListener() {
            @Override
            public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
                lnPopup.setLocation(lnTextField.getLocationOnScreen().x,
                        lnTextField.getLocationOnScreen().y + lnTextField.getHeight());
                lnPopup.setPopupSize(lnTextField.getWidth(), lnPopup.getComponentCount() * 20);
            }
            @Override
            public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
                ;
            }
            @Override
            public void popupMenuCanceled(PopupMenuEvent e) {
                ;
            }
        };
        lnPopup.addPopupMenuListener(lnListener);
        lnTextField.setComponentPopupMenu(lnPopup);
        lnActionListener = new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                lnTextField.setText(e.getActionCommand());
                lnPopup.setVisible(false);
            }// ends actionPerformed()
        };
        FocusListener lnFocusListener = new FocusListener() {
            @Override
            public void focusGained(FocusEvent e) {
                resetLastNamePopup();
            }
            @Override
            public void focusLost(FocusEvent e) {
                lnPopup.setVisible(false);
            }
        };
        KeyListener lnKeyListener = new KeyListener() {
            @Override
            public void keyTyped(KeyEvent e) {
                ;
            }
            @Override
            public void keyPressed(KeyEvent e) {
                ;
            }
            @Override
            public void keyReleased(KeyEvent e) {
                resetLastNamePopup();
            }
        };
        lnTextField.addActionListener(lnActionListener);
        lnTextField.addFocusListener(lnFocusListener);
        lnTextField.addKeyListener(lnKeyListener);
        idTextField = new JTextField(3);
        idTextField.setForeground(Color.BLACK);
        idTextField.setFont(font);
        handicapTextField = new JTextField(3);
        handicapTextField.setForeground(Color.BLACK);
        handicapTextField.setFont(font);
        JPanel fnTextFieldPanel = new JPanel();
        fnTextFieldPanel.add(fnTextField);
        JPanel lnTextFieldPanel = new JPanel();
        lnTextFieldPanel.add(lnTextField);
        JPanel idTextFieldPanel = new JPanel();
        idTextFieldPanel.add(idTextField);
        JPanel handicapTextFieldPanel = new JPanel();
        handicapTextFieldPanel.add(handicapTextField);
        JPanel infoPanel = new JPanel();
        infoPanel.setLayout(new GridLayout(1, 4));
        infoPanel.add(fnTextFieldPanel);
        infoPanel.add(lnTextFieldPanel);
        infoPanel.add(idTextFieldPanel);
        infoPanel.add(handicapTextFieldPanel);
        okButton = new JButton("OK");
        okButton.setForeground(Color.BLACK);
        okButton.setFont(font);
        okButton.addActionListener(this);
        cancelButton = new JButton("Cancel");
        cancelButton.setForeground(Color.BLACK);
        cancelButton.setFont(font);
        cancelButton.addActionListener(this);
        JPanel buttonPanel = new JPanel();
        buttonPanel.setBorder(BorderFactory.createMatteBorder(4, 0, 0, 0, new Color(160, 0, 0)));
        buttonPanel.setLayout(new GridLayout(1, 2));
        buttonPanel.add(okButton);
        buttonPanel.add(cancelButton);
        JPanel content = new JPanel();
        content.setBorder(BorderFactory.createLineBorder(new Color(160, 0, 0), 4));
        content.setLayout(new BorderLayout());
        content.add(labelPanel, BorderLayout.NORTH);
        content.add(infoPanel, BorderLayout.CENTER);
        content.add(buttonPanel, BorderLayout.SOUTH);
        setPreferredSize(new Dimension(500, 200));
        setContentPane(content);
        pack();
        setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
    }// ends NewPlayerDialog()
    @Override
    public void actionPerformed(ActionEvent evt) {
        if(evt.getSource().equals(okButton)) {
            if(checkInfo()) {
                DBHSPlayerInitializer init = new DBHSPlayerInitializer();
                int id = 0;
                float handicap = 0;
                try {
                    if(!idTextField.getText().equals("")) {
                        id = Integer.parseInt(idTextField.getText());
                    }
                }
                catch(NumberFormatException e) {
                    Main.getControlPanel().showErrorMessage(
                            "Please make sure that all inputs under ID# are integer numbers.");
                }
                try {
                    if(!handicapTextField.getText().equals("")) {
                        handicap = Float.parseFloat(handicapTextField.getText());
                    }
                }
                catch(NumberFormatException e) {
                    Main.getControlPanel().showErrorMessage(
                            "Please make sure that all inputs under handicap are number values.");
                }
                Player player;
                try {
                    player = init.initialize(fnTextField.getText(),
                            lnTextField.getText(), id, handicap, 0);
                    Main.getControlPanel().getScreen().getPlayers().addPlayer(player);
                    Main.getControlPanel().showPrizesDialog();
                } catch (Exception e) {
                    Main.getControlPanel().showErrorMessage("There was an error while trying to add the new player.");
                    e.printStackTrace();
                }
            }
            dispose();
            Main.getControlPanel().updateInfo();
        } else if(evt.getSource().equals(cancelButton)) {
            dispose();
        }
    }// ends actionPerformed()
    boolean checkInfo() {
        String fn = fnTextField.getText();
        String ln = lnTextField.getText();
        String id = idTextField.getText();
        String handicap = handicapTextField.getText();
        if(id.equals("") && (fn.equals("") && ln.equals(""))) {
            Main.getControlPanel().showErrorMessage("Please make sure that all players have either their first and last names, or their id number filled in.");
            return false;
        }
        if(fn.equals("") && ln.equals("")) {
            try{
                Integer.parseInt(id);
            }
            catch(NumberFormatException e) {
                if(!fn.equals("") && !ln.equals("")) {
                    Main.getControlPanel().showErrorMessage("Please make sure that " + fn + " " + ln + "'s ID is an integer number.");
                } else {
                    Main.getControlPanel().showErrorMessage("Please make sure that each player's ID is an integer number.");
                }
                return false;
            }
        }
        if(!handicap.equals("")) {
            try{
                Float.parseFloat(handicap);
            }
            catch(NumberFormatException e) {
                Main.getControlPanel().showErrorMessage("Please make sure that " + fn + " " + ln + "'s handicap is numeric.");
                return false;
            }
        }
        return true;
    }// ends checkInfo()
    /**
     * Used for an anonymous ActionListener in the 
     * PlayerPanel.
     * 
     * @return cancelButton
     */
    JButton getCancelButton() {
        return cancelButton;
    }// ends getCancelButton()
    /**
     * Used for an anonymous ActionListener in the 
     * PlayerPanel.
     * 
     * @return okButton
     */
    JButton getOkButton() {
        return okButton;
    }// ends getOkButton()
    @Override
    public void mouseClicked(MouseEvent evt) {
        ;
    }// ends mouseClicked()
    @Override
    public void mouseEntered(MouseEvent evt) {
        if(evt.getComponent().getClass().getName().equals("javax.swing.JMenuItem")) {
            evt.getComponent().setBackground(new Color(120,145,170));
        }
    }// ends mouseEntered()
    @Override
    public void mouseExited(MouseEvent evt) {
        if(evt.getComponent().getClass().getName().equals("javax.swing.JMenuItem")) {
            evt.getComponent().setBackground(new Color(238,238,238));
        }
    }// ends mouseExited()
    @Override
    public void mousePressed(MouseEvent evt) {
        ;
    }// ends mousePressed()
    @Override
    public void mouseReleased(MouseEvent evt) {
        ;
    }// ends mouseReleased()
    /**
     * Repopulates fnPopup if necessary.
     */
    private void resetFirstNamePopup() {
        fnPopup.setVisible(false);
        fnPopup.removeAll();
        if(!(fnTextField.getText().equals("") && lnTextField.getText().equals(""))) {
            JMenuItem item = null;
            String[] names = DBHSDatabaseIntermediary.getFirstNames(fnTextField.getText(), lnTextField.getText());
            for(int i=0; i < names.length; i++) {
                item = new JMenuItem(names[i]);
                item.addActionListener(fnActionListener);
                item.addMouseListener(NewPlayerDialog.this);
                fnPopup.add(item);
            }
            if(names.length > 0 && !names[0].equals("")) {
                fnPopup.setVisible(true);
            }
            fnPopup.grabFocus();
        }
    }// ends resetFirstNamePopup()
    /**
     * Repopulates lnPopup if necessary.
     */
    private void resetLastNamePopup() {
        lnPopup.setVisible(false);
        lnPopup.removeAll();
        if(!(fnTextField.getText().equals("") && lnTextField.getText().equals(""))) {
            JMenuItem item = null;
            String[] names = DBHSDatabaseIntermediary.getLastNames(fnTextField.getText(), lnTextField.getText());
            for(int i=0; i < names.length; i++) {
                item = new JMenuItem(names[i]);
                item.addActionListener(lnActionListener);
                item.addMouseListener(NewPlayerDialog.this);
                lnPopup.add(item);
            }
            if(names.length > 0 && !names[0].equals("")) {
                lnPopup.setVisible(true);
            }
            lnPopup.grabFocus();
        }
    }// ends resetLastNamePopup()
}// ends Class

Answer 1

我将对话框上的模态类型更改为DOCUMENT_MODAL，一切正常。