deyou
111 lines
2.8 KiB
Java
111 lines
2.8 KiB
Java
package dataExchange;
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import java.awt.BorderLayout;
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import java.awt.Component;
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import java.awt.Frame;
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import java.awt.GridLayout;
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import javax.swing.JButton;
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import javax.swing.JDialog;
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import javax.swing.JLabel;
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import javax.swing.JPanel;
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import javax.swing.JPasswordField;
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import javax.swing.JTextField;
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import javax.swing.SwingUtilities;
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/**
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* A password chooser that is shown inside a dialog
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*/
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public class PasswordChooser extends JPanel
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{
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private JTextField username;
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private JPasswordField password;
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private JButton okButton;
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private boolean ok;
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private JDialog dialog;
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public PasswordChooser()
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{
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setLayout(new BorderLayout());
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// construct a panel with user name and password fields
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JPanel panel = new JPanel();
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panel.setLayout(new GridLayout(2, 2));
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panel.add(new JLabel("User name:"));
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panel.add(username = new JTextField(""));
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panel.add(new JLabel("Password:"));
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panel.add(password = new JPasswordField(""));
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add(panel, BorderLayout.CENTER);
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// create Ok and Cancel buttons that terminate the dialog
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okButton = new JButton("Ok");
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okButton.addActionListener(event -> {
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ok = true;
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dialog.setVisible(false);
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});
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JButton cancelButton = new JButton("Cancel");
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cancelButton.addActionListener(event -> dialog.setVisible(false));
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// add buttons to southern border
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JPanel buttonPanel = new JPanel();
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buttonPanel.add(okButton);
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buttonPanel.add(cancelButton);
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add(buttonPanel, BorderLayout.SOUTH);
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}
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/**
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* Sets the dialog defaults.
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* @param u the default user information
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*/
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public void setUser(User u)
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{
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username.setText(u.getName());
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}
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/**
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* Gets the dialog entries.
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* @return a User object whose state represents the dialog entries
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*/
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public User getUser()
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{
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return new User(username.getText(), password.getPassword());
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}
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/**
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* Show the chooser panel in a dialog
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* @param parent a component in the owner frame or null
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* @param title the dialog window title
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*/
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public boolean showDialog(Component parent, String title)
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{
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ok = false;
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// locate the owner frame
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Frame owner = null;
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if (parent instanceof Frame)
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owner = (Frame) parent;
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else
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owner = (Frame) SwingUtilities.getAncestorOfClass(Frame.class, parent);
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// if first time, or if owner has changed, make new dialog
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if (dialog == null || dialog.getOwner() != owner)
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{
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dialog = new JDialog(owner, true);
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dialog.add(this);
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dialog.getRootPane().setDefaultButton(okButton);
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dialog.pack();
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}
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// set title and show dialog
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dialog.setTitle(title);
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dialog.setVisible(true);
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return ok;
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}
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} |