taverna-credential-manager-ui/src/main/java/org/apache/taverna/workbench/ui/credentialmanager/NewEditPasswordEntryDialog.java - incubator-taverna-workbench - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You under the Apache License, Version 2.0
  * (the "License"); you may not use this file except in compliance with
  * the License.  You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 package org.apache.taverna.workbench.ui.credentialmanager;

 import static java.awt.BorderLayout.CENTER;
 import static java.awt.BorderLayout.SOUTH;
 import static java.awt.GridBagConstraints.HORIZONTAL;
 import static java.awt.GridBagConstraints.NONE;
 import static java.awt.GridBagConstraints.WEST;
 import static javax.swing.JOptionPane.ERROR_MESSAGE;
 import static javax.swing.JOptionPane.WARNING_MESSAGE;
 import static javax.swing.JOptionPane.showMessageDialog;
 import static org.apache.taverna.workbench.ui.credentialmanager.CMStrings.ALERT_TITLE;
 import static org.apache.taverna.workbench.ui.credentialmanager.CMStrings.ERROR_TITLE;
 import static org.apache.taverna.workbench.ui.credentialmanager.CMStrings.WARN_TITLE;

 import java.awt.BorderLayout;
 import java.awt.FlowLayout;
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.Insets;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.List;

 import javax.swing.JButton;
 import javax.swing.JDialog;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
 import javax.swing.JPasswordField;
 import javax.swing.JTextField;
 import javax.swing.JPanel;
 import javax.swing.border.CompoundBorder;
 import javax.swing.border.EmptyBorder;
 import javax.swing.border.EtchedBorder;

 import org.apache.log4j.Logger;

 import org.apache.taverna.security.credentialmanager.CMException;
 import org.apache.taverna.security.credentialmanager.CredentialManager;
 import org.apache.taverna.workbench.helper.NonBlockedHelpEnabledDialog;

 /**
  * Dialog used for editing or entering new service URI, username or password for
  * a password entry.
  *
  * @author Alex Nenadic
  */
 @SuppressWarnings("serial")
 public class NewEditPasswordEntryDialog extends NonBlockedHelpEnabledDialog
 {
 	private static final Logger logger = Logger
 			.getLogger(NewEditPasswordEntryDialog.class);
 	/** 'Edit' mode constant - the dialog is in the 'edit' entry mode */
 	private static final String EDIT_MODE = "EDIT";
 	/** 'New' mode constant - the dialog is in the 'new' entry mode */
 	private static final String NEW_MODE = "NEW";

 	/**
 	 * Mode of this dialog - {@link #NEW_MODE} for entering new password entry
 	 * and {@link #EDIT_MODE} for editting an existing password entry
 	 */
 	String mode;
 	/** Service URI field */
 	private JTextField serviceURIField;
 	/** Username field */
 	private JTextField usernameField;
 	/** First password entry field */
 	private JPasswordField passwordField;
 	/** Password confirmation entry field */
 	private JPasswordField passwordConfirmField;
 	/** Stores service URI entered */
 	private URI serviceURI;
 	/** Stores previous service URI for {@link #EDIT_MODE} */
 	private URI serviceURIOld;
 	/** Stores username entered */
 	private String username;
     /** Stores password entered*/
     private String password;
     private CredentialManager credentialManager;

 	public NewEditPasswordEntryDialog(JFrame parent, String title,
 			boolean modal, URI currentURI, String currentUsername,
 			String currentPassword, CredentialManager credentialManager) {
 		super(parent, title, modal);
 		serviceURI = currentURI;
 		username = currentUsername;
 		password = currentPassword;
 		this.credentialManager = credentialManager;
 		if (serviceURI == null && username == null && password == null) {
 			// if passed values are all null
         	mode = NEW_MODE; // dialog is for entering a new password entry
 		} else {
             mode = EDIT_MODE; // dialog is for editing an existing entry
             serviceURIOld = currentURI;
         }
         initComponents();
     }

 	public NewEditPasswordEntryDialog(JDialog parent, String title,
 			boolean modal, URI currentURI, String currentUsername,
 			String currentPassword, CredentialManager credentialManager) {
 		super(parent, title, modal);
         serviceURI = currentURI;
         username = currentUsername;
         password = currentPassword;
 		this.credentialManager = credentialManager;
 		if (serviceURI == null && username == null && password == null) {
 			// if passed values are all null
         	mode = NEW_MODE; // dialog is for entering new password entry
 		} else {
             mode = EDIT_MODE; // dialog is for editing existing entry
             serviceURIOld = currentURI;
         }
         initComponents();
     }

 	private void initComponents() {
 		getContentPane().setLayout(new BorderLayout());

         JLabel serviceURILabel = new JLabel("Service URI");
         serviceURILabel.setBorder(new EmptyBorder(0,5,0,0));

         JLabel usernameLabel = new JLabel("Username");
         usernameLabel.setBorder(new EmptyBorder(0,5,0,0));

         JLabel passwordLabel = new JLabel("Password");
         passwordLabel.setBorder(new EmptyBorder(0,5,0,0));

         JLabel passwordConfirmLabel = new JLabel("Confirm password");
         passwordConfirmLabel.setBorder(new EmptyBorder(0,5,0,0));

         serviceURIField = new JTextField();
         //jtfServiceURI.setBorder(new EmptyBorder(0,0,0,5));

         usernameField = new JTextField(15);
         //jtfUsername.setBorder(new EmptyBorder(0,0,0,5));

         passwordField = new JPasswordField(15);
         //jpfFirstPassword.setBorder(new EmptyBorder(0,0,0,5));

         passwordConfirmField = new JPasswordField(15);
         //jpfConfirmPassword.setBorder(new EmptyBorder(0,0,0,5));

         //If in EDIT_MODE - populate the fields with current values
 		if (mode.equals(EDIT_MODE)) {
 			serviceURIField.setText(serviceURI.toASCIIString());
 			usernameField.setText(username);
 			passwordField.setText(password);
 			passwordConfirmField.setText(password);
 		}

 		JButton okButton = new JButton("OK");
 		okButton.addActionListener(new ActionListener() {
 			@Override
 			public void actionPerformed(ActionEvent evt) {
 				okPressed();
 			}
 		});

 		JButton cancelButton = new JButton("Cancel");
 		cancelButton.addActionListener(new ActionListener() {
 			@Override
 			public void actionPerformed(ActionEvent evt) {
 				cancelPressed();
 			}
 		});

 		JPanel passwordPanel = new JPanel(new GridBagLayout());

 		GridBagConstraints gbc = new GridBagConstraints();
 		gbc.weighty = 0.0;

 		gbc.weightx = 0.0;
 		gbc.gridx = 0;
 		gbc.gridy = 0;
 		gbc.fill = NONE;
 		gbc.anchor = WEST;
 		gbc.insets = new Insets(5, 10, 0, 0);
         passwordPanel.add(serviceURILabel, gbc);

 		gbc.weightx = 1.0;
 		gbc.gridx = 1;
 		gbc.gridy = 0;
 		gbc.fill = HORIZONTAL;
 		gbc.anchor = WEST;
 		gbc.insets = new Insets(5, 10, 0, 5);
         passwordPanel.add(serviceURIField, gbc);

 		gbc.weightx = 0.0;
 		gbc.gridx = 0;
 		gbc.gridy = 1;
 		gbc.fill = NONE;
 		gbc.anchor = WEST;
 		gbc.insets = new Insets(5, 10, 0, 0);
         passwordPanel.add(usernameLabel, gbc);

 		gbc.weightx = 1.0;
 		gbc.gridx = 1;
 		gbc.gridy = 1;
 		gbc.fill = HORIZONTAL;
 		gbc.anchor = WEST;
 		gbc.insets = new Insets(5, 10, 0, 5);
         passwordPanel.add(usernameField, gbc);

 		gbc.weightx = 0.0;
 		gbc.gridx = 0;
 		gbc.gridy = 2;
 		gbc.fill = NONE;
 		gbc.anchor = WEST;
 		gbc.insets = new Insets(5, 10, 0, 0);
         passwordPanel.add(passwordLabel, gbc);

 		gbc.weightx = 1.0;
 		gbc.gridx = 1;
 		gbc.gridy = 2;
 		gbc.fill = HORIZONTAL;
 		gbc.anchor = WEST;
 		gbc.insets = new Insets(5, 10, 0, 5);
         passwordPanel.add(passwordField, gbc);

 		gbc.weightx = 0.0;
 		gbc.gridx = 0;
 		gbc.gridy = 3;
 		gbc.fill = NONE;
 		gbc.anchor = WEST;
 		gbc.insets = new Insets(5, 10, 0, 0);
         passwordPanel.add(passwordConfirmLabel, gbc);

 		gbc.weightx = 1.0;
 		gbc.gridx = 1;
 		gbc.gridy = 3;
 		gbc.fill = HORIZONTAL;
 		gbc.anchor = WEST;
 		gbc.insets = new Insets(5, 10, 0, 5);
 		passwordPanel.add(passwordConfirmField, gbc);

 		passwordPanel.setBorder(new CompoundBorder(new EmptyBorder(10, 10, 10,
 				10), new EtchedBorder()));

 		JPanel buttonsPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
 		buttonsPanel.add(okButton);
 		buttonsPanel.add(cancelButton);

 		getContentPane().add(passwordPanel, CENTER);
 		getContentPane().add(buttonsPanel, SOUTH);

 		addWindowListener(new WindowAdapter() {
 			@Override
 			public void windowClosing(WindowEvent evt) {
 				closeDialog();
 			}
 		});

         //setResizable(false);
         getRootPane().setDefaultButton(okButton);
         pack();
     }

 	/**
 	 * Get the username entered in the dialog.
 	 */
 	public String getUsername() {
 		return username;
 	}

 	/**
 	 * Get the service URI entered in the dialog.
 	 */
 	public URI getServiceURI() {
 		return serviceURI;
 	}

 	/**
 	 * Get the password entered in the dialog.
 	 */
 	public String getPassword() {
 		return password;
 	}

 	/**
 	 * Checks that the user has entered a non-empty service URI, a non-empty
 	 * username, a non-empty password and that an entry with the same URI
 	 * already does not already exist in the Keystore. Store the new password.
 	 */
 	private boolean checkControls() {
 		String serviceURIString = new String(serviceURIField.getText());
 		if (serviceURIString.isEmpty()) {
 			showMessageDialog(this, "Service URI cannot be empty",
 					WARN_TITLE, WARNING_MESSAGE);
 			return false;
 		}
     	try {
 			serviceURI = new URI(serviceURIString);
 		} catch (URISyntaxException e) {
 			showMessageDialog(this, "Service URI is not a valid URI",
 					WARN_TITLE, WARNING_MESSAGE);
 			return false;
 		}

 		username = new String(usernameField.getText());
 		if (username.isEmpty()) {
 			showMessageDialog(this, "Username cannot be empty", WARN_TITLE,
 					WARNING_MESSAGE);
 			return false;
 		}

 		String firstPassword = new String(passwordField.getPassword());
 		String confirmPassword = new String(passwordConfirmField.getPassword());

 		if (!firstPassword.equals(confirmPassword)) {
 			// passwords do not match
 			showMessageDialog(this, "Passwords do not match", WARN_TITLE,
 					WARNING_MESSAGE);
 			return false;
 		}
 		if (firstPassword.isEmpty()) {
 			// passwords match but are empty
 			showMessageDialog(this, "Password cannot be empty", WARN_TITLE,
 					WARNING_MESSAGE);
 			return false;
 		}

 		// passwords the same and non-empty
 		password = firstPassword;

 		// Check if the entered service URL is already associated with another password entry in the Keystore
     	List<URI> uriList = null;
     	try {
 			uriList = credentialManager.getServiceURIsForAllUsernameAndPasswordPairs();
 		} catch (CMException cme) {
 			// Failed to instantiate Credential Manager - warn the user and exit
 			String exMessage = "Failed to instantiate Credential Manager to check for duplicate service URIs.";
 			logger.error(exMessage, cme);
 			showMessageDialog(new JFrame(), exMessage, ERROR_TITLE,
 					ERROR_MESSAGE);
 			return false;
 		}

        	if (uriList != null) { // should not be null really (although can be empty). Check anyway.
        		if (mode.equals(EDIT_MODE)) // edit mode
             	// Remove the current entry's service URI from the list
                 uriList.remove(serviceURIOld);

    			if (uriList.contains(serviceURI)) { // found another entry for this service URI
         		// Warn the user and exit
 				showMessageDialog(
 						this,
 						"The entered service URI is already associated with another password entry",
 						ALERT_TITLE, WARNING_MESSAGE);
 				return false;
 			}
 		}

 		return true;
 	}

 	private void okPressed() {
 		if (checkControls())
 			closeDialog();
 	}

 	private void cancelPressed() {
     	// Set all fields to null to indicate that cancel button was pressed
 		serviceURI = null;
 		username = null;
 		password = null;
 		closeDialog();
 	}

 	private void closeDialog() {
 		setVisible(false);
 		dispose();
 	}
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You under the Apache License, Version 2.0
	* (the "License"); you may not use this file except in compliance with
	* the License. You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	package org.apache.taverna.workbench.ui.credentialmanager;

	import static java.awt.BorderLayout.CENTER;
	import static java.awt.BorderLayout.SOUTH;
	import static java.awt.GridBagConstraints.HORIZONTAL;
	import static java.awt.GridBagConstraints.NONE;
	import static java.awt.GridBagConstraints.WEST;
	import static javax.swing.JOptionPane.ERROR_MESSAGE;
	import static javax.swing.JOptionPane.WARNING_MESSAGE;
	import static javax.swing.JOptionPane.showMessageDialog;
	import static org.apache.taverna.workbench.ui.credentialmanager.CMStrings.ALERT_TITLE;
	import static org.apache.taverna.workbench.ui.credentialmanager.CMStrings.ERROR_TITLE;
	import static org.apache.taverna.workbench.ui.credentialmanager.CMStrings.WARN_TITLE;

	import java.awt.BorderLayout;
	import java.awt.FlowLayout;
	import java.awt.GridBagConstraints;
	import java.awt.GridBagLayout;
	import java.awt.Insets;
	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import java.awt.event.WindowAdapter;
	import java.awt.event.WindowEvent;
	import java.net.URI;
	import java.net.URISyntaxException;
	import java.util.List;

	import javax.swing.JButton;
	import javax.swing.JDialog;
	import javax.swing.JFrame;
	import javax.swing.JLabel;
	import javax.swing.JPasswordField;
	import javax.swing.JTextField;
	import javax.swing.JPanel;
	import javax.swing.border.CompoundBorder;
	import javax.swing.border.EmptyBorder;
	import javax.swing.border.EtchedBorder;

	import org.apache.log4j.Logger;

	import org.apache.taverna.security.credentialmanager.CMException;
	import org.apache.taverna.security.credentialmanager.CredentialManager;
	import org.apache.taverna.workbench.helper.NonBlockedHelpEnabledDialog;

	/**
	* Dialog used for editing or entering new service URI, username or password for
	* a password entry.
	*
	* @author Alex Nenadic
	*/
	@SuppressWarnings("serial")
	public class NewEditPasswordEntryDialog extends NonBlockedHelpEnabledDialog
	{
	private static final Logger logger = Logger
	.getLogger(NewEditPasswordEntryDialog.class);
	/** 'Edit' mode constant - the dialog is in the 'edit' entry mode */
	private static final String EDIT_MODE = "EDIT";
	/** 'New' mode constant - the dialog is in the 'new' entry mode */
	private static final String NEW_MODE = "NEW";

	/**
	* Mode of this dialog - {@link #NEW_MODE} for entering new password entry
	* and {@link #EDIT_MODE} for editting an existing password entry
	*/
	String mode;
	/** Service URI field */
	private JTextField serviceURIField;
	/** Username field */
	private JTextField usernameField;
	/** First password entry field */
	private JPasswordField passwordField;
	/** Password confirmation entry field */
	private JPasswordField passwordConfirmField;
	/** Stores service URI entered */
	private URI serviceURI;
	/** Stores previous service URI for {@link #EDIT_MODE} */
	private URI serviceURIOld;
	/** Stores username entered */
	private String username;
	/** Stores password entered*/
	private String password;
	private CredentialManager credentialManager;

	public NewEditPasswordEntryDialog(JFrame parent, String title,
	boolean modal, URI currentURI, String currentUsername,
	String currentPassword, CredentialManager credentialManager) {
	super(parent, title, modal);
	serviceURI = currentURI;
	username = currentUsername;
	password = currentPassword;
	this.credentialManager = credentialManager;
	if (serviceURI == null && username == null && password == null) {
	// if passed values are all null
	mode = NEW_MODE; // dialog is for entering a new password entry
	} else {
	mode = EDIT_MODE; // dialog is for editing an existing entry
	serviceURIOld = currentURI;
	}
	initComponents();
	}

	public NewEditPasswordEntryDialog(JDialog parent, String title,
	boolean modal, URI currentURI, String currentUsername,
	String currentPassword, CredentialManager credentialManager) {
	super(parent, title, modal);
	serviceURI = currentURI;
	username = currentUsername;
	password = currentPassword;
	this.credentialManager = credentialManager;
	if (serviceURI == null && username == null && password == null) {
	// if passed values are all null
	mode = NEW_MODE; // dialog is for entering new password entry
	} else {
	mode = EDIT_MODE; // dialog is for editing existing entry
	serviceURIOld = currentURI;
	}
	initComponents();
	}

	private void initComponents() {
	getContentPane().setLayout(new BorderLayout());

	JLabel serviceURILabel = new JLabel("Service URI");
	serviceURILabel.setBorder(new EmptyBorder(0,5,0,0));

	JLabel usernameLabel = new JLabel("Username");
	usernameLabel.setBorder(new EmptyBorder(0,5,0,0));

	JLabel passwordLabel = new JLabel("Password");
	passwordLabel.setBorder(new EmptyBorder(0,5,0,0));

	JLabel passwordConfirmLabel = new JLabel("Confirm password");
	passwordConfirmLabel.setBorder(new EmptyBorder(0,5,0,0));

	serviceURIField = new JTextField();
	//jtfServiceURI.setBorder(new EmptyBorder(0,0,0,5));

	usernameField = new JTextField(15);
	//jtfUsername.setBorder(new EmptyBorder(0,0,0,5));

	passwordField = new JPasswordField(15);
	//jpfFirstPassword.setBorder(new EmptyBorder(0,0,0,5));

	passwordConfirmField = new JPasswordField(15);
	//jpfConfirmPassword.setBorder(new EmptyBorder(0,0,0,5));

	//If in EDIT_MODE - populate the fields with current values
	if (mode.equals(EDIT_MODE)) {
	serviceURIField.setText(serviceURI.toASCIIString());
	usernameField.setText(username);
	passwordField.setText(password);
	passwordConfirmField.setText(password);
	}

	JButton okButton = new JButton("OK");
	okButton.addActionListener(new ActionListener() {
	@Override
	public void actionPerformed(ActionEvent evt) {
	okPressed();
	}
	});

	JButton cancelButton = new JButton("Cancel");
	cancelButton.addActionListener(new ActionListener() {
	@Override
	public void actionPerformed(ActionEvent evt) {
	cancelPressed();
	}
	});

	JPanel passwordPanel = new JPanel(new GridBagLayout());

	GridBagConstraints gbc = new GridBagConstraints();
	gbc.weighty = 0.0;

	gbc.weightx = 0.0;
	gbc.gridx = 0;
	gbc.gridy = 0;
	gbc.fill = NONE;
	gbc.anchor = WEST;
	gbc.insets = new Insets(5, 10, 0, 0);
	passwordPanel.add(serviceURILabel, gbc);

	gbc.weightx = 1.0;
	gbc.gridx = 1;
	gbc.gridy = 0;
	gbc.fill = HORIZONTAL;
	gbc.anchor = WEST;
	gbc.insets = new Insets(5, 10, 0, 5);
	passwordPanel.add(serviceURIField, gbc);

	gbc.weightx = 0.0;
	gbc.gridx = 0;
	gbc.gridy = 1;
	gbc.fill = NONE;
	gbc.anchor = WEST;
	gbc.insets = new Insets(5, 10, 0, 0);
	passwordPanel.add(usernameLabel, gbc);

	gbc.weightx = 1.0;
	gbc.gridx = 1;
	gbc.gridy = 1;
	gbc.fill = HORIZONTAL;
	gbc.anchor = WEST;
	gbc.insets = new Insets(5, 10, 0, 5);
	passwordPanel.add(usernameField, gbc);

	gbc.weightx = 0.0;
	gbc.gridx = 0;
	gbc.gridy = 2;
	gbc.fill = NONE;
	gbc.anchor = WEST;
	gbc.insets = new Insets(5, 10, 0, 0);
	passwordPanel.add(passwordLabel, gbc);

	gbc.weightx = 1.0;
	gbc.gridx = 1;
	gbc.gridy = 2;
	gbc.fill = HORIZONTAL;
	gbc.anchor = WEST;
	gbc.insets = new Insets(5, 10, 0, 5);
	passwordPanel.add(passwordField, gbc);

	gbc.weightx = 0.0;
	gbc.gridx = 0;
	gbc.gridy = 3;
	gbc.fill = NONE;
	gbc.anchor = WEST;
	gbc.insets = new Insets(5, 10, 0, 0);
	passwordPanel.add(passwordConfirmLabel, gbc);

	gbc.weightx = 1.0;
	gbc.gridx = 1;
	gbc.gridy = 3;
	gbc.fill = HORIZONTAL;
	gbc.anchor = WEST;
	gbc.insets = new Insets(5, 10, 0, 5);
	passwordPanel.add(passwordConfirmField, gbc);

	passwordPanel.setBorder(new CompoundBorder(new EmptyBorder(10, 10, 10,
	10), new EtchedBorder()));

	JPanel buttonsPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
	buttonsPanel.add(okButton);
	buttonsPanel.add(cancelButton);

	getContentPane().add(passwordPanel, CENTER);
	getContentPane().add(buttonsPanel, SOUTH);

	addWindowListener(new WindowAdapter() {
	@Override
	public void windowClosing(WindowEvent evt) {
	closeDialog();
	}
	});

	//setResizable(false);
	getRootPane().setDefaultButton(okButton);
	pack();
	}

	/**
	* Get the username entered in the dialog.
	*/
	public String getUsername() {
	return username;
	}

	/**
	* Get the service URI entered in the dialog.
	*/
	public URI getServiceURI() {
	return serviceURI;
	}

	/**
	* Get the password entered in the dialog.
	*/
	public String getPassword() {
	return password;
	}

	/**
	* Checks that the user has entered a non-empty service URI, a non-empty
	* username, a non-empty password and that an entry with the same URI
	* already does not already exist in the Keystore. Store the new password.
	*/
	private boolean checkControls() {
	String serviceURIString = new String(serviceURIField.getText());
	if (serviceURIString.isEmpty()) {
	showMessageDialog(this, "Service URI cannot be empty",
	WARN_TITLE, WARNING_MESSAGE);
	return false;
	}
	try {
	serviceURI = new URI(serviceURIString);
	} catch (URISyntaxException e) {
	showMessageDialog(this, "Service URI is not a valid URI",
	WARN_TITLE, WARNING_MESSAGE);
	return false;
	}

	username = new String(usernameField.getText());
	if (username.isEmpty()) {
	showMessageDialog(this, "Username cannot be empty", WARN_TITLE,
	WARNING_MESSAGE);
	return false;
	}

	String firstPassword = new String(passwordField.getPassword());
	String confirmPassword = new String(passwordConfirmField.getPassword());

	if (!firstPassword.equals(confirmPassword)) {
	// passwords do not match
	showMessageDialog(this, "Passwords do not match", WARN_TITLE,
	WARNING_MESSAGE);
	return false;
	}
	if (firstPassword.isEmpty()) {
	// passwords match but are empty
	showMessageDialog(this, "Password cannot be empty", WARN_TITLE,
	WARNING_MESSAGE);
	return false;
	}

	// passwords the same and non-empty
	password = firstPassword;

	// Check if the entered service URL is already associated with another password entry in the Keystore
	List<URI> uriList = null;
	try {
	uriList = credentialManager.getServiceURIsForAllUsernameAndPasswordPairs();
	} catch (CMException cme) {
	// Failed to instantiate Credential Manager - warn the user and exit
	String exMessage = "Failed to instantiate Credential Manager to check for duplicate service URIs.";
	logger.error(exMessage, cme);
	showMessageDialog(new JFrame(), exMessage, ERROR_TITLE,
	ERROR_MESSAGE);
	return false;
	}

	if (uriList != null) { // should not be null really (although can be empty). Check anyway.
	if (mode.equals(EDIT_MODE)) // edit mode
	// Remove the current entry's service URI from the list
	uriList.remove(serviceURIOld);

	if (uriList.contains(serviceURI)) { // found another entry for this service URI
	// Warn the user and exit
	showMessageDialog(
	this,
	"The entered service URI is already associated with another password entry",
	ALERT_TITLE, WARNING_MESSAGE);
	return false;
	}
	}

	return true;
	}

	private void okPressed() {
	if (checkControls())
	closeDialog();
	}

	private void cancelPressed() {
	// Set all fields to null to indicate that cancel button was pressed
	serviceURI = null;
	username = null;
	password = null;
	closeDialog();
	}

	private void closeDialog() {
	setVisible(false);
	dispose();
	}
	}