deyou
67 lines
1.8 KiB
Java
67 lines
1.8 KiB
Java
package dataExchange;
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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/**
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* A frame with a menu whose File->Connect action shows a password dialog.
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*/
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public class DataExchangeFrame extends JFrame
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{
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public static final int TEXT_ROWS = 20;
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public static final int TEXT_COLUMNS = 40;
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private PasswordChooser dialog = null;
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private JTextArea textArea;
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public DataExchangeFrame()
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{
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// construct a File menu
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JMenuBar mbar = new JMenuBar();
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setJMenuBar(mbar);
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JMenu fileMenu = new JMenu("File");
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mbar.add(fileMenu);
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// add Connect and Exit menu items
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JMenuItem connectItem = new JMenuItem("Connect");
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connectItem.addActionListener(new ConnectAction());
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fileMenu.add(connectItem);
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// The Exit item exits the program
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JMenuItem exitItem = new JMenuItem("Exit");
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exitItem.addActionListener(event -> System.exit(0));
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fileMenu.add(exitItem);
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textArea = new JTextArea(TEXT_ROWS, TEXT_COLUMNS);
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add(new JScrollPane(textArea), BorderLayout.CENTER);
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pack();
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}
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/**
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* The Connect action pops up the password dialog.
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*/
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private class ConnectAction implements ActionListener
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{
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public void actionPerformed(ActionEvent event)
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{
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// if first time, construct dialog
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if (dialog == null) dialog = new PasswordChooser();
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// set default values
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dialog.setUser(new User("yourname", null));
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// pop up dialog
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if (dialog.showDialog(DataExchangeFrame.this, "Connect"))
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{
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// if accepted, retrieve user input
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User u = dialog.getUser();
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textArea.append("user name = " + u.getName() + ", password = "
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+ (new String(u.getPassword())) + "\n");
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}
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}
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}
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} |