/*
    * Copyright (C) 2009, Google Inc.
    * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
    * and other copyright owners as documented in the project's IP log.
    *
    * This program and the accompanying materials are made available
    * under the terms of the Eclipse Distribution License v1.0 which
    * accompanies this distribution, is reproduced below, and is
    * available at http://www.eclipse.org/org/documents/edl-v10.php
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or
   * without modification, are permitted provided that the following
   * conditions are met:
   *
   * - Redistributions of source code must retain the above copyright
   *   notice, this list of conditions and the following disclaimer.
   *
   * - Redistributions in binary form must reproduce the above
   *   copyright notice, this list of conditions and the following
   *   disclaimer in the documentation and/or other materials provided
   *   with the distribution.
   *
   * - Neither the name of the Eclipse Foundation, Inc. nor the
   *   names of its contributors may be used to endorse or promote
   *   products derived from this software without specific prior
   *   written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package org.eclipse.jgit.awtui;
  
  import java.awt.Container;
  import java.awt.GridBagConstraints;
  import java.awt.GridBagLayout;
  import java.awt.Insets;
  import java.net.PasswordAuthentication;
  
  import javax.swing.JLabel;
  import javax.swing.JOptionPane;
  import javax.swing.JPanel;
  import javax.swing.JPasswordField;
  import javax.swing.JTextField;
  
  import org.eclipse.jgit.util.CachedAuthenticator;
  
  /**
   * Basic network prompt for username/password when using AWT.
   */
  public class AwtAuthenticator extends CachedAuthenticator {
  	/**
  	 * Install this authenticator implementation into the JVM.
  	 */
  	public static void install() {
  		setDefault(new AwtAuthenticator());
  	}
  
  	/** {@inheritDoc} */
  	@Override
  	protected PasswordAuthentication promptPasswordAuthentication() {
  		final GridBagConstraints gbc = new GridBagConstraints(0, 0, 1, 1, 1, 1,
  				GridBagConstraints.NORTHWEST, GridBagConstraints.NONE,
  				new Insets(0, 0, 0, 0), 0, 0);
  		final Container panel = new JPanel();
  		panel.setLayout(new GridBagLayout());
  
  		final StringBuilder instruction = new StringBuilder();
  		instruction.append(UIText.get().enterUsernameAndPasswordFor);
  		instruction.append(" "); //$NON-NLS-1$
  		if (getRequestorType() == RequestorType.PROXY) {
  			instruction.append(getRequestorType());
  			instruction.append(" "); //$NON-NLS-1$
  			instruction.append(getRequestingHost());
  			if (getRequestingPort() > 0) {
  				instruction.append(":"); //$NON-NLS-1$
  				instruction.append(getRequestingPort());
  			}
  		} else {
  			instruction.append(getRequestingURL());
  		}
  
  		gbc.weightx = 1.0;
  		gbc.gridwidth = GridBagConstraints.REMAINDER;
  		gbc.gridx = 0;
  		panel.add(new JLabel(instruction.toString()), gbc);
 		gbc.gridy++;
 
 		gbc.gridwidth = GridBagConstraints.RELATIVE;
 
 		// Username
 		//
 		final JTextField username;
 		gbc.fill = GridBagConstraints.NONE;
 		gbc.gridx = 0;
 		gbc.weightx = 1;
 		panel.add(new JLabel(UIText.get().username), gbc);
 
 		gbc.gridx = 1;
 		gbc.fill = GridBagConstraints.HORIZONTAL;
 		gbc.weighty = 1;
 		username = new JTextField(20);
 		panel.add(username, gbc);
 		gbc.gridy++;
 
 		// Password
 		//
 		final JPasswordField password;
 		gbc.fill = GridBagConstraints.NONE;
 		gbc.gridx = 0;
 		gbc.weightx = 1;
 		panel.add(new JLabel(UIText.get().password), gbc);
 
 		gbc.gridx = 1;
 		gbc.fill = GridBagConstraints.HORIZONTAL;
 		gbc.weighty = 1;
 		password = new JPasswordField(20);
 		panel.add(password, gbc);
 		gbc.gridy++;
 
 		if (JOptionPane.showConfirmDialog(null, panel,
 				UIText.get().authenticationRequired, JOptionPane.OK_CANCEL_OPTION,
 				JOptionPane.QUESTION_MESSAGE) == JOptionPane.OK_OPTION) {
 			return new PasswordAuthentication(username.getText(), password
 					.getPassword());
 		}
 
 		return null; // cancel
 	}
 }