package ui;import javax.swing.*;import core.Command;import java.util.List;import java.util.ArrayList;import java.awt.*;import java.awt.event.*;public class PromptDialog extends JDialog{    private Command m_command;    private int m_count;    private JLabel [] m_labels;    private JTextField [] m_inputs;    private boolean m_canceled;    public PromptDialog (Command cmd)    {        super (cmd.getFrame(), true);        m_canceled = true;        m_command = cmd;        String [] prompts = cmd.getParameterPrompts ();        m_count = prompts.length;        m_labels = new JLabel [m_count];        m_inputs = new JTextField [m_count];        for (int i = 0; i < m_count; i++)        {            m_labels[i] = new JLabel (prompts[i]);            m_inputs[i] = new JTextField (20);        }        configureDisplay ();        pack();        show();    }        public boolean isCanceled ()    {        return m_canceled;    }    private void configureDisplay ()    {        // a vertical box arrangement        JPanel dlogPanel = new JPanel ();        dlogPanel.setLayout (new BoxLayout (dlogPanel, BoxLayout.Y_AXIS));        dlogPanel.add (createQAPanel ());        dlogPanel.add (createButtonPanel ());        this.getContentPane().add (dlogPanel, BorderLayout.CENTER);    }        // ----> top box contains two grid panels    private JPanel createQAPanel ()    {        JPanel qaPanel = new JPanel ();        qaPanel.setLayout (new BoxLayout (qaPanel, BoxLayout.X_AXIS));        JPanel labelPanel = new JPanel ();        labelPanel.setLayout (new GridLayout (m_count, 1));        for (int i = 0; i < m_count; i++)            labelPanel.add (m_labels[i]);        JPanel inputPanel = new JPanel ();        inputPanel.setLayout (new GridLayout (m_count, 1));        for (int i = 0; i < m_count; i++)            inputPanel.add (m_inputs[i]);        qaPanel.add (labelPanel);        qaPanel.add (inputPanel);        return qaPanel;    }    private JPanel createButtonPanel ()    {        // ----> bottom box contains buttons        JPanel buttonPanel = new JPanel ();        buttonPanel.setLayout (new BoxLayout (buttonPanel, BoxLayout.X_AXIS));        JButton okButton = new JButton ("OK");        okButton.addActionListener (new ActionListener ()            {                public void actionPerformed (ActionEvent e)                {                    m_canceled = false;                    PromptDialog.this.hide ();                }            });        JButton cancelButton = new JButton ("Cancel");        cancelButton.addActionListener (new ActionListener ()            {                public void actionPerformed (ActionEvent e)                {                    m_canceled = true;                    PromptDialog.this.hide ();                }            });        buttonPanel.add (okButton);        buttonPanel.add (cancelButton);        return buttonPanel;    }    public List getValues ()    {        List answer = new ArrayList ();        for (int i = 0; i < m_count; i++)        {            answer.add (m_inputs[i].getText());        }        return answer;    }}