GUI refactoring 2

git-svn-id: https://joinup.ec.europa.eu/svn/mocca/trunk@178 8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4

9 files changed, 206 insertions, 1542 deletions

diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUI.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUI.java
deleted file mode 100644
index f68f2ece..00000000
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUI.java
+++ /dev/null
@@ -1,1146 +0,0 @@
-/*
- * Copyright 2008 Federal Chancellery Austria and
- * Graz University of Technology
- *
- * Licensed 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 at.gv.egiz.bku.gui;
-
-import at.gv.egiz.smcc.PINSpec;
-import at.gv.egiz.stal.HashDataInput;
-import java.awt.Container;
-import java.awt.Cursor;
-import java.awt.Font;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import java.awt.event.MouseAdapter;
-import java.awt.event.MouseEvent;
-import java.io.BufferedOutputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.URL;
-import java.text.MessageFormat;
-import java.util.List;
-import java.util.Locale;
-import java.util.ResourceBundle;
-import javax.swing.GroupLayout;
-import javax.swing.ImageIcon;
-import javax.swing.JButton;
-import javax.swing.JCheckBox;
-import javax.swing.JFileChooser;
-import javax.swing.JLabel;
-import javax.swing.JOptionPane;
-import javax.swing.JPanel;
-import javax.swing.JPasswordField;
-import javax.swing.JScrollPane;
-import javax.swing.JTable;
-import javax.swing.JTextArea;
-import javax.swing.LayoutStyle;
-import javax.swing.SwingUtilities;
-import javax.swing.table.TableColumn;
-import javax.swing.table.TableModel;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-
-/**
- *
- * @author clemens
- */
-public class BKUGUI implements BKUGUIFacade {
-    
-    private static final Log log = LogFactory.getLog(BKUGUI.class);
-    
-    protected HelpMouseListener helpListener;
-    
-    protected Container contentPane;
-    protected ResourceBundle messages;
-    /** left and right side main panels */
-//    protected JPanel iconPanel;
-    protected JPanel contentPanel;
-    /** right side content panels and layouts */
-    protected JPanel headerPanel;
-    protected JPanel mainPanel;
-    protected JPanel buttonPanel;
-    /** right side fixed labels  */
-    protected JLabel titleLabel;
-    /** remember the pinfield to return to worker */
-    protected JPasswordField pinField;
-
-    protected int buttonSize;
-    
-    private static final int CHECKBOX_WIDTH = new JCheckBox().getPreferredSize().width;
-    
-    /**
-     * @param contentPane
-     * @param localeString may be null
-     */
-//    @Override
-    public void init(final Container contentPane, Locale locale, Style guiStyle, final URL background, ActionListener helpListener) {
-
-        if (locale != null) {
-            messages = ResourceBundle.getBundle(MESSAGES_BUNDLE, locale);
-        } else {
-            messages = ResourceBundle.getBundle(MESSAGES_BUNDLE);
-        }
-
-        this.contentPane = contentPane;
-        registerHelpListener(helpListener);
-
-        try {
-
-          log.debug("scheduling gui initialization");
-      
-            SwingUtilities.invokeAndWait(new Runnable() {
-
-                @Override
-                public void run() {
-                  
-                  log.debug("initializing gui");
-
-//                    initIconPanel();
-                    initContentPanel(background);
-
-                    GroupLayout layout = new GroupLayout(contentPane);
-                    contentPane.setLayout(layout);
-                    layout.setHorizontalGroup(layout.createSequentialGroup().addComponent(contentPanel));
-                    layout.setVerticalGroup(layout.createSequentialGroup().addComponent(contentPanel));
-//                    layout.setHorizontalGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
-//                      .addGroup(layout.createSequentialGroup()
-//                        .addComponent(iconPanel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-//                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-//                        .addComponent(contentPanel, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)));
-//                    layout.setVerticalGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
-//                      .addComponent(iconPanel, GroupLayout.Alignment.TRAILING, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-//                      .addComponent(contentPanel, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE));
-                }
-            });
-        } catch (Exception ex) {
-            throw new RuntimeException("Failed to init GUI: " + ex.getMessage());
-        }
-    }
-
-//    protected void initIconPanel() {
-//        iconPanel = new JPanel();
-//        JLabel iconLabel = new JLabel();
-//        iconLabel.setIcon(new ImageIcon(getClass().getResource(LOGO_RESOURCE))); // NOI18N
-//
-//        GroupLayout iconPanelLayout = new GroupLayout(iconPanel);
-//        iconPanel.setLayout(iconPanelLayout);
-//        iconPanelLayout.setHorizontalGroup(
-//          iconPanelLayout.createSequentialGroup()
-//                .addContainerGap()
-//                .addComponent(iconLabel, GroupLayout.PREFERRED_SIZE, iconLabel.getPreferredSize().width, GroupLayout.PREFERRED_SIZE)
-//                .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)); //);
-//        iconPanelLayout.setVerticalGroup(
-//          iconPanelLayout.createSequentialGroup()
-//                .addContainerGap()
-//                .addComponent(iconLabel, GroupLayout.PREFERRED_SIZE, iconLabel.getPreferredSize().height, GroupLayout.PREFERRED_SIZE)
-//                .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)); //);
-//    }
-
-    protected void initContentPanel(URL background) {
-
-      if (background == null) {
-        background = this.getClass().getResource(DEFAULT_BACKGROUND);
-      }
-      contentPanel = new ImagePanel(background);
-
-//        contentPanel.setBorder(new TitledBorder("content"));
-        
-        headerPanel = new JPanel();
-        headerPanel.setOpaque(false);
-        mainPanel = new JPanel();
-        mainPanel.setOpaque(false);
-        buttonPanel = new JPanel(); 
-        buttonPanel.setOpaque(false);
-
-//        headerPanel.setBorder(new TitledBorder("header"));
-//        mainPanel.setBorder(new TitledBorder("main"));
-//        buttonPanel.setBorder(new TitledBorder("button"));
-
-        titleLabel = new JLabel();
-        titleLabel.setFont(titleLabel.getFont().deriveFont(titleLabel.getFont().getStyle() |
-          java.awt.Font.BOLD, titleLabel.getFont().getSize() + 2));
-        
-        JLabel helpLabel = new JLabel();
-        helpLabel.setIcon(new ImageIcon(getClass().getResource(HELP_IMG))); 
-        helpLabel.addMouseListener(helpListener);
-        helpLabel.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
-
-        JButton b = new JButton();
-        b.setText(messages.getString(BUTTON_CANCEL));
-        if (b.getPreferredSize().width > buttonSize)
-            buttonSize = b.getPreferredSize().width;
-        b.setText(messages.getString(BUTTON_OK));
-        if (b.getPreferredSize().width > buttonSize)
-            buttonSize = b.getPreferredSize().width;
-        b.setText(messages.getString(BUTTON_SIGN));
-        if (b.getPreferredSize().width > buttonSize)
-            buttonSize = b.getPreferredSize().width;
-        b.setText(messages.getString(BUTTON_BACK));
-        if (b.getPreferredSize().width > buttonSize)
-            buttonSize = b.getPreferredSize().width;
-        b.setText(messages.getString(BUTTON_SAVE));
-        if (b.getPreferredSize().width > buttonSize)
-            buttonSize = b.getPreferredSize().width;
-        
-//        if (cancelButton.getPreferredSize().width > buttonSize)
-//            buttonSize = cancelButton.getPreferredSize().width;
-//        if (signButton.getPreferredSize().width > buttonSize)
-//            buttonSize = signButton.getPreferredSize().width;
-//        if (backButton.getPreferredSize().width > buttonSize)
-//            buttonSize = backButton.getPreferredSize().width;
-//        if (saveButton.getPreferredSize().width > buttonSize)
-//            buttonSize = saveButton.getPreferredSize().width;
-
-        
-        GroupLayout headerPanelLayout = new GroupLayout(headerPanel);
-        headerPanel.setLayout(headerPanelLayout);
-
-        headerPanelLayout.setHorizontalGroup(
-          headerPanelLayout.createSequentialGroup()
-            .addComponent(titleLabel) 
-            .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED, 0, Short.MAX_VALUE)
-            .addComponent(helpLabel));
-        headerPanelLayout.setVerticalGroup(
-          headerPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING) //SequentialGroup()
-            .addComponent(titleLabel, 0, GroupLayout.PREFERRED_SIZE, Short.MAX_VALUE)
-            .addComponent(helpLabel));
-            
-
-        GroupLayout contentPanelLayout = new GroupLayout(contentPanel);
-        contentPanel.setLayout(contentPanelLayout);
-
-        contentPanelLayout.setHorizontalGroup(
-          contentPanelLayout.createSequentialGroup()
-            .addContainerGap()
-            .addGroup(
-              contentPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
-                .addComponent(headerPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                .addComponent(mainPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                .addComponent(buttonPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
-            .addContainerGap());
-        contentPanelLayout.setVerticalGroup(
-          contentPanelLayout.createSequentialGroup()
-            .addContainerGap()
-            .addComponent(headerPanel, 0, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-            .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-            .addComponent(mainPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) 
-            .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED) //, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-            .addComponent(buttonPanel, 0, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-            .addContainerGap());
-    }
-
-    @Override
-    public Locale getLocale() {
-      return messages.getLocale();
-    }
-
-    @Override
-    public void showWelcomeDialog() {
-      
-      log.debug("scheduling welcome dialog");
-      
-        SwingUtilities.invokeLater(new Runnable() {
-
-            @Override
-            public void run() {
-              
-              log.debug("show welcome dialog");
-              
-                mainPanel.removeAll();
-                buttonPanel.removeAll();
-
-                titleLabel.setText(messages.getString(TITLE_WELCOME));
-
-                helpListener.setHelpTopic(HELP_WELCOME);
-                
-                JLabel welcomeMsgLabel = new JLabel();
-                welcomeMsgLabel.setFont(welcomeMsgLabel.getFont().deriveFont(welcomeMsgLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
-                welcomeMsgLabel.setText(messages.getString(MESSAGE_WAIT));
-
-                GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
-                mainPanel.setLayout(mainPanelLayout);
-
-                mainPanelLayout.setHorizontalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                    .addComponent(welcomeMsgLabel));
-                mainPanelLayout.setVerticalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                    .addComponent(welcomeMsgLabel));
-
-                contentPanel.validate();
-
-            }
-        });
-    }
-
-    @Override
-    public void showInsertCardDialog(final ActionListener cancelListener, final String cancelCommand) {
-      
-      log.debug("scheduling insert card dialog");
-      
-      SwingUtilities.invokeLater(new Runnable() {
-
-            @Override
-            public void run() {
-              
-              log.debug("show insert card dialog");
-      
-                mainPanel.removeAll();
-                buttonPanel.removeAll();
-
-                titleLabel.setText(messages.getString(TITLE_INSERTCARD));
-
-                helpListener.setHelpTopic(HELP_INSERTCARD);
-
-                JLabel insertCardMsgLabel = new JLabel();
-                insertCardMsgLabel.setFont(insertCardMsgLabel.getFont().deriveFont(insertCardMsgLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
-                insertCardMsgLabel.setText(messages.getString(MESSAGE_INSERTCARD));
-
-                GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
-                mainPanel.setLayout(mainPanelLayout);
-
-                mainPanelLayout.setHorizontalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                    .addComponent(insertCardMsgLabel));
-                mainPanelLayout.setVerticalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                    .addComponent(insertCardMsgLabel));
-                
-                JButton cancelButton = new JButton();
-                cancelButton.setText(messages.getString(BUTTON_CANCEL));
-                cancelButton.addActionListener(cancelListener);
-                cancelButton.setActionCommand(cancelCommand);
-
-                GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
-                buttonPanel.setLayout(buttonPanelLayout);
-
-                buttonPanelLayout.setHorizontalGroup(
-                  buttonPanelLayout.createSequentialGroup()
-                        .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                        .addComponent(cancelButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
-                buttonPanelLayout.setVerticalGroup(
-                  buttonPanelLayout.createSequentialGroup()
-                    .addComponent(cancelButton));
-
-                contentPanel.validate();
-            }
-        });
-    }
-
-    /**
-     * only difference to showInsertCard: title text: card not supported
-     * @param cancelListener
-     * @param cancelCommand
-     */
-    @Override
-    public void showCardNotSupportedDialog(final ActionListener cancelListener, final String cancelCommand) {
-        
-      log.debug("scheduling card not supported dialog");
-      
-      SwingUtilities.invokeLater(new Runnable() {
-
-            @Override
-            public void run() {
-                
-              log.debug("show card not supported dialog");
-                
-              mainPanel.removeAll();
-              buttonPanel.removeAll();
-
-                titleLabel.setText(messages.getString(TITLE_CARD_NOT_SUPPORTED));
-
-                helpListener.setHelpTopic(HELP_CARDNOTSUPPORTED);
-              
-                JLabel insertCardMsgLabel = new JLabel();
-                insertCardMsgLabel.setFont(insertCardMsgLabel.getFont().deriveFont(insertCardMsgLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
-                insertCardMsgLabel.setText(messages.getString(MESSAGE_INSERTCARD));
-
-                GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
-                mainPanel.setLayout(mainPanelLayout);
-
-                mainPanelLayout.setHorizontalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                    .addComponent(insertCardMsgLabel));
-                mainPanelLayout.setVerticalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                    .addComponent(insertCardMsgLabel));
-
-                JButton cancelButton = new JButton();
-                cancelButton.setText(messages.getString(BUTTON_CANCEL));
-                cancelButton.addActionListener(cancelListener);
-                cancelButton.setActionCommand(cancelCommand);
-
-                GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
-                buttonPanel.setLayout(buttonPanelLayout);
-
-                buttonPanelLayout.setHorizontalGroup(
-                  buttonPanelLayout.createSequentialGroup()
-                        .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                        .addComponent(cancelButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
-                buttonPanelLayout.setVerticalGroup(
-                  buttonPanelLayout.createSequentialGroup()
-                    .addComponent(cancelButton));
-                
-                contentPanel.validate();
-            }
-        });
-    }
-
-    private void showCardPINDialog(final PINSpec pinSpec, final int numRetries, final ActionListener okListener, final String okCommand, final ActionListener cancelListener, final String cancelCommand) {
-        
-      log.debug("scheduling card-pin dialog");
-      
-      SwingUtilities.invokeLater(new Runnable() {
-
-            @Override
-            public void run() {
-
-              log.debug("show card-pin dialog");
-      
-                mainPanel.removeAll();
-                buttonPanel.removeAll();
-
-                if (numRetries < 0) {
-                    String cardpinTitle = messages.getString(TITLE_CARDPIN);
-                    titleLabel.setText(MessageFormat.format(cardpinTitle, new Object[]{pinSpec.getLocalizedName()}));
-                } else {
-                    titleLabel.setText(messages.getString(TITLE_RETRY));
-                }
-
-                JButton cancelButton = new JButton();
-                cancelButton.setText(messages.getString(BUTTON_CANCEL));
-                cancelButton.setActionCommand(cancelCommand);
-                cancelButton.addActionListener(cancelListener);
-
-                JButton okButton = new JButton();
-                okButton.setText(messages.getString(BUTTON_OK));
-                okButton.setEnabled(false);
-                okButton.setActionCommand(okCommand);
-                okButton.addActionListener(okListener);
-
-                JLabel cardPinLabel = new JLabel();
-                cardPinLabel.setFont(cardPinLabel.getFont().deriveFont(cardPinLabel.getFont().getStyle() | java.awt.Font.BOLD));
-                String pinLabel = messages.getString(LABEL_PIN);
-                cardPinLabel.setText(MessageFormat.format(pinLabel, new Object[]{pinSpec.getLocalizedName()}));
-
-                pinField = new JPasswordField();
-                pinField.setText("");
-                pinField.setDocument(new PINDocument(pinSpec, okButton));
-                pinField.setActionCommand(okCommand);
-                pinField.addActionListener(new ActionListener() {
-
-                    @Override
-                    public void actionPerformed(ActionEvent e) {
-                        if (pinField.getPassword().length >= pinSpec.getMinLength()) {
-                            okListener.actionPerformed(e);
-                        }
-                    }
-                });
-
-                JLabel infoLabel = new JLabel();
-                if (numRetries < 0) {
-                  infoLabel.setFont(infoLabel.getFont().deriveFont(infoLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
-                  String infoPattern = messages.getString(MESSAGE_ENTERPIN);
-                  infoLabel.setText(MessageFormat.format(infoPattern, new Object[] {pinSpec.getLocalizedName()}));
-                  helpListener.setHelpTopic(HELP_CARDPIN);
-                } else {
-                  infoLabel.setFont(infoLabel.getFont().deriveFont(infoLabel.getFont().getStyle() | java.awt.Font.BOLD));
-                  infoLabel.setText(MessageFormat.format(messages.getString(MESSAGE_RETRIES), new Object[]{String.valueOf(numRetries)}));
-                  infoLabel.setForeground(ERROR_COLOR);
-                  helpListener.setHelpTopic(HELP_RETRY);
-                }
-                
-                JLabel pinsizeLabel = new JLabel();
-                pinsizeLabel.setFont(pinsizeLabel.getFont().deriveFont(pinsizeLabel.getFont().getStyle() & ~java.awt.Font.BOLD, pinsizeLabel.getFont().getSize()-2));
-                String pinsizePattern = messages.getString(LABEL_PINSIZE);
-                String pinSize = String.valueOf(pinSpec.getMinLength());
-                if (pinSpec.getMinLength() != pinSpec.getMaxLength()) {
-                    pinSize += "-" + pinSpec.getMaxLength();
-                }
-                pinsizeLabel.setText(MessageFormat.format(pinsizePattern, new Object[]{pinSize}));
-                
-                GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
-                mainPanel.setLayout(mainPanelLayout);
-
-                mainPanelLayout.setHorizontalGroup(
-                  mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
-                      .addComponent(infoLabel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-                    .addGroup(mainPanelLayout.createSequentialGroup()
-                      .addComponent(cardPinLabel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-                      .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                      .addGroup(mainPanelLayout.createParallelGroup(GroupLayout.Alignment.TRAILING)
-                        .addComponent(pinField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) //))
-                        .addComponent(pinsizeLabel))));
-
-                mainPanelLayout.setVerticalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                      .addComponent(infoLabel)
-                    .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                    .addGroup(mainPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
-                        .addComponent(cardPinLabel)
-                        .addComponent(pinField))
-                    .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                    .addComponent(pinsizeLabel));
-
-                GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
-                buttonPanel.setLayout(buttonPanelLayout);
-
-                buttonPanelLayout.setHorizontalGroup(
-                  buttonPanelLayout.createSequentialGroup()
-                        .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                        .addComponent(okButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE)
-                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                        .addComponent(cancelButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
-                buttonPanelLayout.setVerticalGroup(
-                  buttonPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE) 
-                        .addComponent(okButton)
-                        .addComponent(cancelButton)); 
-
-                pinField.requestFocusInWindow();
-                contentPanel.validate();
-
-            }
-        });
-    }
-
-    @Override
-    public void showCardPINDialog(PINSpec pinSpec, ActionListener okListener, String okCommand, ActionListener cancelListener, String cancelCommand) {
-        showCardPINDialog(pinSpec, -1, okListener, okCommand, cancelListener, cancelCommand);
-    }
-
-    @Override
-    public void showCardPINRetryDialog(PINSpec pinSpec, int numRetries, ActionListener okListener, String okCommand, ActionListener cancelListener, String cancelCommand) {
-        showCardPINDialog(pinSpec, numRetries, okListener, okCommand, cancelListener, cancelCommand);
-    }
-
-    @Override
-    public void showSignaturePINDialog(PINSpec pinSpec, ActionListener signListener, String signCommand, ActionListener cancelListener, String cancelCommand, ActionListener hashdataListener, String hashdataCommand) {
-        showSignaturePINDialog(pinSpec, -1, signListener, signCommand, cancelListener, cancelCommand, hashdataListener, hashdataCommand);
-    }
-
-    @Override
-    public void showSignaturePINRetryDialog(PINSpec pinSpec, int numRetries, ActionListener okListener, String okCommand, ActionListener cancelListener, String cancelCommand, ActionListener hashdataListener, String hashdataCommand) {
-        showSignaturePINDialog(pinSpec, numRetries, okListener, okCommand, cancelListener, cancelCommand, hashdataListener, hashdataCommand);
-    }
-
-    private void showSignaturePINDialog(final PINSpec pinSpec, final int numRetries, final ActionListener signListener, final String signCommand, final ActionListener cancelListener, final String cancelCommand, final ActionListener hashdataListener, final String hashdataCommand) {
-
-      log.debug("scheduling signature-pin dialog");
-      
-      SwingUtilities.invokeLater(new Runnable() {
-
-            @Override
-            public void run() {
-              
-              log.debug("show signature-pin dialog");
-      
-                mainPanel.removeAll();
-                buttonPanel.removeAll();
-
-                if (numRetries < 0) {
-                    titleLabel.setText(messages.getString(TITLE_SIGN));
-                } else {
-                    titleLabel.setText(messages.getString(TITLE_RETRY));
-                }
-
-                JButton cancelButton = new JButton();
-                cancelButton.setText(messages.getString(BUTTON_CANCEL));
-                cancelButton.setActionCommand(cancelCommand);
-                cancelButton.addActionListener(cancelListener);
-
-                JButton signButton = new JButton();
-                signButton.setText(messages.getString(BUTTON_SIGN));
-                signButton.setEnabled(false);
-                signButton.setActionCommand(signCommand);
-                signButton.addActionListener(signListener);
-
-                JLabel signPinLabel = new JLabel();
-                signPinLabel.setFont(signPinLabel.getFont().deriveFont(signPinLabel.getFont().getStyle() | java.awt.Font.BOLD));
-                String pinLabel = messages.getString(LABEL_PIN);
-                signPinLabel.setText(MessageFormat.format(pinLabel, new Object[]{pinSpec.getLocalizedName()}));
-
-                pinField = new JPasswordField();
-                pinField.setText("");
-                pinField.setDocument(new PINDocument(pinSpec, signButton));
-                pinField.setActionCommand(signCommand);
-                pinField.addActionListener(new ActionListener() {
-
-                    @Override
-                    public void actionPerformed(ActionEvent e) {
-                        if (pinField.getPassword().length >= pinSpec.getMinLength()) {
-                            signListener.actionPerformed(e);
-                        }
-                    }
-                });
-
-                JLabel pinsizeLabel = new JLabel();
-                pinsizeLabel.setFont(pinsizeLabel.getFont().deriveFont(pinsizeLabel.getFont().getStyle() & ~java.awt.Font.BOLD, pinsizeLabel.getFont().getSize()-2));
-                String pinsizePattern = messages.getString(LABEL_PINSIZE);
-                String pinSize = String.valueOf(pinSpec.getMinLength());
-                if (pinSpec.getMinLength() != pinSpec.getMaxLength()) {
-                    pinSize += "-" + pinSpec.getMaxLength();
-                }
-                pinsizeLabel.setText(MessageFormat.format(pinsizePattern, new Object[]{pinSize}));
-                
-                JLabel infoLabel = new JLabel();
-                if (numRetries < 0) {
-                  infoLabel.setFont(infoLabel.getFont().deriveFont(infoLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
-                  infoLabel.setText(messages.getString(MESSAGE_HASHDATALINK));
-                  infoLabel.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
-                  infoLabel.setForeground(HYPERLINK_COLOR);
-                  infoLabel.addMouseListener(new MouseAdapter() {
-
-                      @Override
-                      public void mouseClicked(MouseEvent me) {
-                          ActionEvent e = new ActionEvent(this, ActionEvent.ACTION_PERFORMED, hashdataCommand);
-                          hashdataListener.actionPerformed(e);
-                      }
-                  });
-                  helpListener.setHelpTopic(HELP_SIGNPIN);
-                } else {
-                  infoLabel.setFont(infoLabel.getFont().deriveFont(infoLabel.getFont().getStyle() | java.awt.Font.BOLD));
-                  infoLabel.setText(MessageFormat.format(messages.getString(MESSAGE_RETRIES), new Object[]{String.valueOf(numRetries)}));
-                  infoLabel.setForeground(ERROR_COLOR);
-                  helpListener.setHelpTopic(HELP_RETRY);
-                }
-
-                GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
-                mainPanel.setLayout(mainPanelLayout);
-
-                mainPanelLayout.setHorizontalGroup(
-                  mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
-                      .addComponent(infoLabel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-                    .addGroup(mainPanelLayout.createSequentialGroup()
-                        .addComponent(signPinLabel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                        .addGroup(mainPanelLayout.createParallelGroup(GroupLayout.Alignment.TRAILING)
-                          .addComponent(pinField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                          .addComponent(pinsizeLabel))));
-
-                mainPanelLayout.setVerticalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                        .addComponent(infoLabel)
-                    .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                    .addGroup(mainPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
-                        .addComponent(signPinLabel)
-                        .addComponent(pinField))
-                    .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                    .addComponent(pinsizeLabel));
-
-                GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
-                buttonPanel.setLayout(buttonPanelLayout);
-
-                buttonPanelLayout.setHorizontalGroup(
-                  buttonPanelLayout.createSequentialGroup()
-                        .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                        .addComponent(signButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE)
-                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                        .addComponent(cancelButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
-                buttonPanelLayout.setVerticalGroup(
-                  buttonPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE) 
-                        .addComponent(signButton)
-                        .addComponent(cancelButton)); 
-
-                pinField.requestFocusInWindow();
-                contentPanel.validate();
-
-            }
-        });
-    }
-
-    @Override
-    public void showErrorDialog(final String errorMsgKey, final Object[] errorMsgParams, final ActionListener okListener, final String okCommand) {
-        
-      log.debug("scheduling error dialog");
-      
-      SwingUtilities.invokeLater(new Runnable() {
-
-          @Override
-            public void run() {
-
-                log.debug("show error dialog");
-                
-                mainPanel.removeAll();
-                buttonPanel.removeAll();
-
-                titleLabel.setText(messages.getString(TITLE_ERROR));
-
-                helpListener.setHelpTopic(errorMsgKey);
-                
-                String errorMsgPattern = messages.getString(errorMsgKey);
-                String errorMsg = MessageFormat.format(errorMsgPattern, errorMsgParams);
-                
-                JLabel errorMsgLabel = new JLabel();
-                errorMsgLabel.setFont(errorMsgLabel.getFont().deriveFont(errorMsgLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
-                errorMsgLabel.setText(errorMsg);
-                errorMsgLabel.setForeground(ERROR_COLOR);
-
-                GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
-                mainPanel.setLayout(mainPanelLayout);
-
-                mainPanelLayout.setHorizontalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                    .addComponent(errorMsgLabel));
-                mainPanelLayout.setVerticalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                    .addComponent(errorMsgLabel));
-
-                JButton okButton = new JButton();
-                okButton.setText(messages.getString(BUTTON_OK));
-                okButton.setActionCommand(okCommand);
-                okButton.addActionListener(okListener);
-
-                GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
-                buttonPanel.setLayout(buttonPanelLayout);
-
-                buttonPanelLayout.setHorizontalGroup(
-                  buttonPanelLayout.createSequentialGroup()
-                        .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                        .addComponent(okButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
-                buttonPanelLayout.setVerticalGroup(
-                  buttonPanelLayout.createSequentialGroup()
-                    .addComponent(okButton));
-
-                contentPanel.validate();
-            }
-        });
-    }
-
-    @Override
-    public void showErrorDialog(final String errorMsgKey, final Object[] errorMsgParams) {
-      
-      log.debug("scheduling error  dialog");
-      
-      SwingUtilities.invokeLater(new Runnable() {
-
-        @Override
-        public void run() {
-          
-          log.debug("show error dialog");
-      
-          mainPanel.removeAll();
-          buttonPanel.removeAll();
-
-          titleLabel.setText(messages.getString(TITLE_ERROR));
-
-          helpListener.setHelpTopic(errorMsgKey);
-          
-          String errorMsgPattern = messages.getString(errorMsgKey);
-          String errorMsg = MessageFormat.format(errorMsgPattern, errorMsgParams);
-
-          JLabel errorMsgLabel = new JLabel();
-          errorMsgLabel.setFont(errorMsgLabel.getFont().deriveFont(errorMsgLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
-          errorMsgLabel.setText(errorMsg);
-          errorMsgLabel.setForeground(ERROR_COLOR);
-
-          GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
-          mainPanel.setLayout(mainPanelLayout);
-
-          mainPanelLayout.setHorizontalGroup(
-            mainPanelLayout.createSequentialGroup()
-              .addComponent(errorMsgLabel));
-          mainPanelLayout.setVerticalGroup(
-            mainPanelLayout.createSequentialGroup()
-              .addComponent(errorMsgLabel));
-
-          contentPanel.validate();
-        }
-      });
-    }
-
-    @Override
-    public void showWaitDialog(final String waitMessage) {
-        
-      log.debug("scheduling wait dialog");
-      
-      SwingUtilities.invokeLater(new Runnable() {
-
-            @Override
-            public void run() {
-        
-              log.debug("show wait dialog");
-              
-                mainPanel.removeAll();
-                buttonPanel.removeAll();
-
-                titleLabel.setText(messages.getString(TITLE_WAIT));
-
-                helpListener.setHelpTopic(HELP_WAIT);
-                
-                JLabel waitMsgLabel = new JLabel();
-                waitMsgLabel.setFont(waitMsgLabel.getFont().deriveFont(waitMsgLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
-                if (waitMessage != null) {
-                    waitMsgLabel.setText("<html>" + waitMessage + "</html>");
-                } else {
-                    waitMsgLabel.setText(messages.getString(MESSAGE_WAIT));
-                }
-
-                GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
-                mainPanel.setLayout(mainPanelLayout);
-
-                mainPanelLayout.setHorizontalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                    .addComponent(waitMsgLabel));
-                mainPanelLayout.setVerticalGroup(
-                  mainPanelLayout.createSequentialGroup()
-                    .addComponent(waitMsgLabel));
-
-                contentPanel.validate();
-            }
-        });
-    }
-
-    @Override
-    public char[] getPin() {
-        if (pinField != null) {
-            return pinField.getPassword();
-        }
-        return null;
-    }
-    
-    @Override
-    public void showHashDataInputDialog(final List<HashDataInput> signedReferences, final ActionListener okListener, final String okCommand) {
-      
-      if (signedReferences == null) {
-        showErrorDialog(messages.getString(ERR_NO_HASHDATA), new Object[] {"No SignedReferences provided"}, okListener, okCommand);
-      }
-      
-      if (signedReferences.size() == 1) {
-
-          if ("text/plain".equals(signedReferences.get(0).getMimeType())) {
-            
-            ActionListener saveHashDataListener = new ActionListener() {
-
-                @Override
-                public void actionPerformed(ActionEvent e) {
-                    showSaveHashDataInputDialog(signedReferences, okListener, okCommand);
-                }
-            };
-            
-            try {
-              String hashDataText = getText(signedReferences.get(0));
-              showPlainTextHashDataInputDialog(hashDataText, saveHashDataListener, "save", okListener, okCommand);
-            } catch (IOException ex) {
-              showErrorDialog(messages.getString(ERR_NO_HASHDATA), new Object[] {ex.getMessage()}, okListener, okCommand);
-            }
-          
-          } else {
-            showSaveHashDataInputDialog(signedReferences, okListener, okCommand);
-          }
-          
-      } else {
-
-        final HashDataTableModel tableModel = new HashDataTableModel(signedReferences);
-
-        ActionListener saveHashDataListener = new ActionListener() {
-
-            @Override
-            public void actionPerformed(ActionEvent e) {
-              showSaveHashDataInputDialog(tableModel.getSelectedHashData(), okListener, okCommand);
-            }
-        };
-        showMultipleHashDataInputDialog(tableModel, okListener, okCommand, saveHashDataListener, "save");
-      }
-    }
-    
-    private void showPlainTextHashDataInputDialog(final String hashDataText, final ActionListener saveListener, final String saveCommand, final ActionListener cancelListener, final String cancelCommand) {
-      
-      log.debug("scheduling plaintext hashdatainput dialog");
-      
-      SwingUtilities.invokeLater(new Runnable() {
-
-        @Override
-        public void run() {
-          
-          log.debug("show plaintext hashdatainput dialog");
-      
-          mainPanel.removeAll();
-          buttonPanel.removeAll();
-
-          titleLabel.setText(messages.getString(TITLE_HASHDATA));
-
-          helpListener.setHelpTopic(HELP_HASHDATA);
-
-          JLabel refIdLabel = new JLabel();
-          refIdLabel.setFont(refIdLabel.getFont().deriveFont(refIdLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
-          refIdLabel.setText(messages.getString(MESSAGE_HASHDATA)); //MessageFormat.format(refIdLabelPattern, new Object[]{refId}));
-
-          JTextArea hashDataTextArea = new JTextArea(hashDataText);
-          hashDataTextArea.setEditable(false);
-//          hashDataTextArea.setColumns(1);
-//          hashDataTextArea.setRows(1);
-          hashDataTextArea.setFont(new Font(HASHDATA_FONT, hashDataTextArea.getFont().getStyle(), hashDataTextArea.getFont().getSize()));
-//          hashDataScrollPane.setViewportView(hashDataTextArea);
-//          hashDataScrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED); //HORIZONTAL_SCROLLBAR_NEVER);
-          hashDataTextArea.setLineWrap(true);
-          hashDataTextArea.setWrapStyleWord(true);
-
-          JScrollPane hashDataScrollPane = new JScrollPane(hashDataTextArea);
-
-          GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
-          mainPanel.setLayout(mainPanelLayout);
-
-          mainPanelLayout.setHorizontalGroup(
-             mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
-                .addComponent(refIdLabel)
-              .addComponent(hashDataScrollPane, 0, 0, Short.MAX_VALUE));
-
-          mainPanelLayout.setVerticalGroup(
-            mainPanelLayout.createSequentialGroup()
-                .addComponent(refIdLabel)
-              .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-              .addComponent(hashDataScrollPane, 0, 0, Short.MAX_VALUE));
-
-          JButton backButton = new JButton();
-          backButton.setText(messages.getString(BUTTON_BACK));
-          backButton.setActionCommand(cancelCommand);
-          backButton.addActionListener(cancelListener);
-
-          JButton saveButton = new JButton();
-          saveButton.setText(messages.getString(BUTTON_SAVE));
-          saveButton.setActionCommand(saveCommand);
-          saveButton.addActionListener(saveListener);
-
-          GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
-          buttonPanel.setLayout(buttonPanelLayout);
-
-          buttonPanelLayout.setHorizontalGroup(
-            buttonPanelLayout.createSequentialGroup()
-                  .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                  .addComponent(saveButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE)
-                  .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                  .addComponent(backButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
-          buttonPanelLayout.setVerticalGroup(
-            buttonPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE) 
-                  .addComponent(saveButton)
-                  .addComponent(backButton)); 
-
-          contentPanel.validate();
-        }
-      });
-    }
-
-    private void showMultipleHashDataInputDialog(final TableModel signedReferences, final ActionListener cancelListener, final String cancelCommand, final ActionListener saveListener, final String saveCommand) {
-      
-      log.debug("scheduling multiple hashdatainput dialog");
-      
-      SwingUtilities.invokeLater(new Runnable() {
-
-        @Override
-        public void run() {
-          
-          log.debug("show multiple hashdatainput dialog");
-          
-          mainPanel.removeAll();
-          buttonPanel.removeAll();
-
-          titleLabel.setText(messages.getString(TITLE_HASHDATA));
-
-          helpListener.setHelpTopic(HELP_HASHDATALIST);
-          
-          JLabel refIdLabel = new JLabel();
-          refIdLabel.setFont(refIdLabel.getFont().deriveFont(refIdLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
-          String refIdLabelPattern = messages.getString(MESSAGE_HASHDATALIST);
-          refIdLabel.setText(MessageFormat.format(refIdLabelPattern, new Object[]{signedReferences.getRowCount()}));
-
-          JTable hashDataTable = new JTable();
-          hashDataTable.setModel(signedReferences);
-          hashDataTable.setTableHeader(null);
-  //        hashDataTable.setShowVerticalLines(false);
-  //        hashDataTable.setRowSelectionAllowed(false);
-          TableColumn selectCol = hashDataTable.getColumnModel().getColumn(1);
-          selectCol.setMinWidth(CHECKBOX_WIDTH);
-          selectCol.setMaxWidth(CHECKBOX_WIDTH);
-
-
-//          hashDataTable.setPreferredScrollableViewportSize(mainPanel.getPreferredSize());
-
-          JScrollPane hashDataScrollPane = new JScrollPane(hashDataTable);
-
-          GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
-          mainPanel.setLayout(mainPanelLayout);
-
-          mainPanelLayout.setHorizontalGroup(
-            mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
-                .addComponent(refIdLabel)
-              .addComponent(hashDataScrollPane, 0, 0, Short.MAX_VALUE));
-
-          mainPanelLayout.setVerticalGroup(
-            mainPanelLayout.createSequentialGroup()
-                .addComponent(refIdLabel)
-              .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-              .addComponent(hashDataScrollPane, 0, 0, hashDataTable.getPreferredSize().height+3));
-          
-          JButton backButton = new JButton();
-          backButton.setText(messages.getString(BUTTON_BACK));
-          backButton.setActionCommand(cancelCommand);
-          backButton.addActionListener(cancelListener);
-
-          JButton saveButton = new JButton();
-          saveButton.setText(messages.getString(BUTTON_SAVE));
-          saveButton.setActionCommand(saveCommand);
-          saveButton.addActionListener(saveListener);
-
-          GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
-          buttonPanel.setLayout(buttonPanelLayout);
-
-          buttonPanelLayout.setHorizontalGroup(
-            buttonPanelLayout.createSequentialGroup()
-                  .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                  .addComponent(saveButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE)
-                  .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                  .addComponent(backButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
-          buttonPanelLayout.setVerticalGroup(
-            buttonPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE) 
-                  .addComponent(saveButton)
-                  .addComponent(backButton)); 
-
-          contentPanel.validate();
-        }
-      });
-    }
-
-    private void showSaveHashDataInputDialog(final List<HashDataInput> signedRefs, final ActionListener okListener, final String okCommand) {
-      
-      log.debug("scheduling save hashdatainput dialog");
-      
-      SwingUtilities.invokeLater(new Runnable() {
-
-        @Override
-        public void run() {
-          
-          log.debug("show save hashdatainput dialog");
-      
-          String userHome = System.getProperty("user.home");
-          
-          JFileChooser fileDialog = new JFileChooser(userHome); 
-          fileDialog.setMultiSelectionEnabled(false);
-          fileDialog.setDialogType(JFileChooser.SAVE_DIALOG);
-          fileDialog.setFileHidingEnabled(true);
-          if (signedRefs.size() == 1) {
-            fileDialog.setDialogTitle(messages.getString(WINDOWTITLE_SAVE));
-            fileDialog.setFileSelectionMode(JFileChooser.FILES_ONLY);
-            String mimeType = signedRefs.get(0).getMimeType();
-            MimeFilter mimeFilter = new MimeFilter(mimeType, messages);
-            fileDialog.setFileFilter(mimeFilter);
-            String filename = messages.getString(SAVE_HASHDATAINPUT_PREFIX) + MimeFilter.getExtension(mimeType);
-            fileDialog.setSelectedFile(new File(userHome, filename));
-          } else {
-            fileDialog.setDialogTitle(messages.getString(WINDOWTITLE_SAVEDIR));
-            fileDialog.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
-          }
-          
-          //parent contentPane -> placed over applet
-          switch (fileDialog.showSaveDialog(fileDialog)) {
-            case JFileChooser.APPROVE_OPTION:
-              File f = fileDialog.getSelectedFile();
-              for (HashDataInput hashDataInput : signedRefs) {
-                String mimeType = hashDataInput.getMimeType();
-                String id = hashDataInput.getReferenceId();
-                File file;
-                if (f.isDirectory()) {
-                  String filename = messages.getString(SAVE_HASHDATAINPUT_PREFIX) + '_' + id + MimeFilter.getExtension(mimeType);
-                  file = new File(f, filename);
-                } else {
-                  file = f;
-                }
-                if (file.exists()) {
-                  String ovrwrt = messages.getString(MESSAGE_OVERWRITE);
-                  int overwrite = JOptionPane.showConfirmDialog(fileDialog, MessageFormat.format(ovrwrt, file), messages.getString(WINDOWTITLE_OVERWRITE), JOptionPane.OK_CANCEL_OPTION);
-                  if (overwrite != JOptionPane.OK_OPTION) {
-                    continue;
-                  }
-                }
-                if (log.isDebugEnabled()) {
-                    log.debug("Writing HashDataInput " + id + " (" + mimeType + ") to file " + file);
-                }
-                FileOutputStream fos = null;
-                try {
-                    fos = new FileOutputStream(file);
-                    BufferedOutputStream bos = new BufferedOutputStream(fos);
-                    InputStream hdi = hashDataInput.getHashDataInput();
-                    int b;
-                    while ((b = hdi.read()) != -1) {
-                        bos.write(b);
-                    }
-                    bos.flush();
-                    bos.close();
-                } catch (IOException ex) {
-                    log.error("Failed to write HashDataInput to file " + file + ": " + ex.getMessage());
-                    showErrorDialog(ERR_WRITE_HASHDATA, new Object[] {ex.getMessage()}, null, null);
-                    ex.printStackTrace();
-                } finally {
-                    try {
-                        fos.close();
-                    } catch (IOException ex) {
-                    }
-                }    
-              }  
-          }
-          log.debug("done saving hashdatainput");
-          okListener.actionPerformed(new ActionEvent(fileDialog, ActionEvent.ACTION_PERFORMED, okCommand));
-        }
-      });
-    }
-    
-    private static String getText(HashDataInput hdi) throws IOException {
-      ByteArrayOutputStream baos = null;
-      try {
-        InputStream hashDataIS = hdi.getHashDataInput();
-        if (hashDataIS == null) {
-          log.error("No HashDataInput stream for reference " + hdi.getReferenceId());
-          return null;
-        } else {
-          baos = new ByteArrayOutputStream(hashDataIS.available());
-          int c;
-          while ((c = hashDataIS.read()) != -1) {
-              baos.write(c);
-          }
-          String encoding = hdi.getEncoding();
-          if (encoding == null) {
-            //default for URL-encoded
-            encoding = "UTF-8";
-          }
-          return baos.toString(encoding);
-        }
-      } catch (IOException ex) {
-          log.error("Failed to read HashDataInput for reference " + hdi.getReferenceId() + ": " + ex.getMessage());
-          throw ex; 
-      } finally {
-          try {
-              baos.close();
-          } catch (IOException ex) {
-          }
-      }
-    }
-    
-    private void registerHelpListener(ActionListener helpListener) {
-      if (helpListener != null) {
-        this.helpListener = new HelpMouseListener(helpListener);
-      } else {
-        log.error("no help listener provided, will not be able to display help");
-        this.helpListener = new HelpMouseListener(new ActionListener() {
-
-          @Override
-          public void actionPerformed(ActionEvent e) {
-            log.error("no help listener registered (requested help topic: " + e.getActionCommand() + ")");
-          }
-        });
-      }
-    }
-}
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIFactory.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIFactory.java
index f4981614..998aaa86 100644
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIFactory.java
+++ b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIFactory.java
@@ -24,22 +24,11 @@ import java.util.Locale;
 
 public class BKUGUIFactory {
   
-  public static final String SIMPLE_GUI = "simple";
-  public static final String ADVANCED_GUI = "advanced";
-  
-//  private static BKUGUIFactory instance = new BKUGUIFactory();
-
-//  private BKUGUIFactory() {
-//  }
-//
-//  protected BKUGUIFacade createNewGUI(Container contentPane, Locale locale, String style, URL background, ActionListener helpListener) {
-//    
-//  }
-
-  public static BKUGUIFacade createGUI(Container contentPane, Locale locale, String style, URL background, ActionListener helpListener) {
-    if (ADVANCED_GUI.equals(style)) {
-      return new SimpleGUI(contentPane, locale, BKUGUIFacade.Style.advanced, background, helpListener);
-    }
-    return new SimpleGUI(contentPane, locale, BKUGUIFacade.Style.simple, background, helpListener);
+  public static BKUGUIFacade createGUI(Container contentPane, 
+          Locale locale, 
+          BKUGUIFacade.Style style, 
+          URL background, 
+          ActionListener helpListener) {
+    return new BKUGUIImpl(contentPane, locale, style, background, helpListener);
   }
 }
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/SimpleGUI.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIImpl.java
index d4d6efef..9d23315c 100644
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/SimpleGUI.java
+++ b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIImpl.java
@@ -19,15 +19,14 @@ package at.gv.egiz.bku.gui;
 
 import at.gv.egiz.smcc.PINSpec;
 import at.gv.egiz.stal.HashDataInput;
+import at.gv.egiz.stal.impl.ByteArrayHashDataInput;
 import java.awt.Container;
 import java.awt.Cursor;
-import java.awt.Font;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.io.BufferedOutputStream;
-import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -35,9 +34,11 @@ import java.io.InputStream;
 import java.lang.reflect.InvocationTargetException;
 import java.net.URL;
 import java.text.MessageFormat;
+import java.util.Collections;
 import java.util.List;
 import java.util.Locale;
 import java.util.ResourceBundle;
+import javax.swing.CellRendererPane;
 import javax.swing.GroupLayout;
 import javax.swing.ImageIcon;
 import javax.swing.JButton;
@@ -48,9 +49,9 @@ import javax.swing.JPanel;
 import javax.swing.JPasswordField;
 import javax.swing.JScrollPane;
 import javax.swing.JTable;
-import javax.swing.JTextArea;
 import javax.swing.LayoutStyle;
 import javax.swing.SwingUtilities;
+import javax.swing.table.TableCellRenderer;
 import javax.swing.table.TableModel;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -59,9 +60,9 @@ import org.apache.commons.logging.LogFactory;
  *
  * @author clemens
  */
-public class SimpleGUI implements BKUGUIFacade {
+public class BKUGUIImpl implements BKUGUIFacade {
     
-    private static final Log log = LogFactory.getLog(SimpleGUI.class);
+    private static final Log log = LogFactory.getLog(BKUGUIImpl.class);
 
     protected HelpMouseListener helpListener;
     
@@ -100,7 +101,11 @@ public class SimpleGUI implements BKUGUIFacade {
      * @param background
      * @param helpListener
      */
-    public SimpleGUI(Container contentPane, Locale locale, Style guiStyle, URL background, ActionListener helpListener) {
+    public BKUGUIImpl(Container contentPane, 
+            Locale locale, 
+            Style guiStyle, 
+            URL background, 
+            ActionListener helpListener) {
       this.contentPane = contentPane;
 
       if (locale != null) {
@@ -373,6 +378,7 @@ public class SimpleGUI implements BKUGUIFacade {
                 
                 if (renderCancelButton) {
                   JButton cancelButton = new JButton();
+                  cancelButton.setFont(cancelButton.getFont().deriveFont(cancelButton.getFont().getStyle() & ~java.awt.Font.BOLD));
                   cancelButton.setText(messages.getString(BUTTON_CANCEL));
                   cancelButton.addActionListener(cancelListener);
                   cancelButton.setActionCommand(cancelCommand);
@@ -446,6 +452,7 @@ public class SimpleGUI implements BKUGUIFacade {
                 
               if (renderCancelButton) {
                 JButton cancelButton = new JButton();
+                cancelButton.setFont(cancelButton.getFont().deriveFont(cancelButton.getFont().getStyle() & ~java.awt.Font.BOLD));
                 cancelButton.setText(messages.getString(BUTTON_CANCEL));
                 cancelButton.addActionListener(cancelListener);
                 cancelButton.setActionCommand(cancelCommand);
@@ -467,36 +474,6 @@ public class SimpleGUI implements BKUGUIFacade {
         });
     }
 
-  private static int initButtonSize(ResourceBundle messages, boolean renderCancelButton) {
-
-    int buttonSize = 0;
-    
-    JButton b = new JButton();
-    b.setText(messages.getString(BUTTON_OK));
-    if (b.getPreferredSize().width > buttonSize) {
-      buttonSize = b.getPreferredSize().width;
-    }
-    b.setText(messages.getString(BUTTON_SIGN));
-    if (b.getPreferredSize().width > buttonSize) {
-      buttonSize = b.getPreferredSize().width;
-    }
-    b.setText(messages.getString(BUTTON_BACK));
-    if (b.getPreferredSize().width > buttonSize) {
-      buttonSize = b.getPreferredSize().width;
-    }
-    b.setText(messages.getString(BUTTON_SAVE));
-    if (b.getPreferredSize().width > buttonSize) {
-      buttonSize = b.getPreferredSize().width;
-    }
-    if (renderCancelButton) {
-      b.setText(messages.getString(BUTTON_CANCEL));
-      if (b.getPreferredSize().width > buttonSize) {
-        buttonSize = b.getPreferredSize().width;
-      }
-    }
-    return buttonSize;
-  }
-
     private void showCardPINDialog(final PINSpec pinSpec, final int numRetries, final ActionListener okListener, final String okCommand, final ActionListener cancelListener, final String cancelCommand) {
         
       log.debug("scheduling card-pin dialog");
@@ -621,6 +598,7 @@ public class SimpleGUI implements BKUGUIFacade {
                 
                 if (renderCancelButton) {
                   JButton cancelButton = new JButton();
+                  cancelButton.setFont(cancelButton.getFont().deriveFont(cancelButton.getFont().getStyle() & ~java.awt.Font.BOLD));
                   cancelButton.setText(messages.getString(BUTTON_CANCEL));
                   cancelButton.setActionCommand(cancelCommand);
                   cancelButton.addActionListener(cancelListener);
@@ -791,6 +769,7 @@ public class SimpleGUI implements BKUGUIFacade {
                 
                 if (renderCancelButton) {
                   JButton cancelButton = new JButton();
+                  cancelButton.setFont(cancelButton.getFont().deriveFont(cancelButton.getFont().getStyle() & ~java.awt.Font.BOLD));
                   cancelButton.setText(messages.getString(BUTTON_CANCEL));
                   cancelButton.setActionCommand(cancelCommand);
                   cancelButton.addActionListener(cancelListener);
@@ -1024,64 +1003,56 @@ public class SimpleGUI implements BKUGUIFacade {
      * @param okCommand
      */
     @Override
-    public void showHashDataInputDialog(final List<HashDataInput> signedReferences, final ActionListener okListener, final String okCommand) {
+    public void showHashDataInputDialog(final List<HashDataInput> signedReferences, 
+            final ActionListener okListener, 
+            final String okCommand) {
       
       if (signedReferences == null) {
         showErrorDialog(messages.getString(ERR_NO_HASHDATA), new Object[] {"No SignedReferences provided"}, okListener, okCommand);
         return;
       }
       
-      ActionListener saveHashDataListener = new ActionListener() {
-
+      if (signedReferences.size() == 1) {
+        ActionListener saveHashDataListener = new ActionListener() {
           @Override
           public void actionPerformed(ActionEvent e) {
-              showSaveHashDataInputDialog(signedReferences, okListener, okCommand);
+            HashDataInput hdi = signedReferences.get(0);
+            showSaveHashDataInputDialog(Collections.singletonList(hdi), okListener, okCommand);
           }
-      };
-      
-      if (signedReferences.size() == 1) {
-        
-//        if (standalone) {
-          
-          showHashDataViewer(signedReferences, saveHashDataListener, "save");
-          
-//        } else {
-//          if ("text/plain".equals(signedReferences.get(0).getMimeType())) {
-//            
-//            ActionListener saveHashDataListener = new ActionListener() {
-//
-//                @Override
-//                public void actionPerformed(ActionEvent e) {
-//                    showSaveHashDataInputDialog(signedReferences, okListener, okCommand);
-//                }
-//            };
-//            
-//            try {
-//              String hashDataText = getText(signedReferences.get(0));
-//              showPlainTextHashDataInputDialog(hashDataText, saveHashDataListener, "save", okListener, okCommand);
-//            } catch (IOException ex) {
-//              showErrorDialog(messages.getString(ERR_NO_HASHDATA), new Object[] {ex.getMessage()}, okListener, okCommand);
-//            }
-//          
-//          } else {
-//            showSaveHashDataInputDialog(signedReferences, okListener, okCommand);
-//          }
-//        }
+        };
+        showHashDataViewer(signedReferences.get(0), saveHashDataListener, "save");
       } else {
+        HashDataTableModel tableModel = new HashDataTableModel(signedReferences);
+        showSignedReferencesListDialog(tableModel, okListener, okCommand);
+      }
+    }
+    
+    /**
+     * Opens HashDataViewer on mouse clicked event
+     */
+    public class HashDataMouseListener extends MouseAdapter {
+      
+      private HashDataInput hashData;
 
-//        final HashDataTableModel tableModel = new HashDataTableModel(signedReferences);
-//
-//        ActionListener saveHashDataListener = new ActionListener() {
-//
-//            @Override
-//            public void actionPerformed(ActionEvent e) {
-//              showSaveHashDataInputDialog(tableModel.getSelectedHashData(), okListener, okCommand);
-//            }
-//        };
-        
-        SimpleHashDataTableModel tableModel = new SimpleHashDataTableModel(signedReferences);
-        showMultipleHashDataInputDialog(tableModel, okListener, okCommand, saveHashDataListener, "save");
+      public void setHashData(HashDataInput hashData) {
+        this.hashData = hashData;
       }
+
+      @Override
+      public void mouseClicked(MouseEvent e) {
+        ActionListener saveListener = new ActionListener() {
+
+          @Override
+          public void actionPerformed(ActionEvent e) {
+            showSaveHashDataInputDialog(Collections.singletonList(hashData), null, null);
+          }
+        };
+        showHashDataViewer(hashData, saveListener, "save");
+        super.mouseClicked(e);
+      }
+
+      
+      
     }
     
     /**
@@ -1090,11 +1061,12 @@ public class SimpleGUI implements BKUGUIFacade {
      * @param saveListener
      * @param saveCommand
      */
-    private void showHashDataViewer(final List<HashDataInput> signedReferences, final ActionListener saveListener, final String saveCommand) {
+    private void showHashDataViewer(final HashDataInput hashDataInput, final ActionListener saveListener, final String saveCommand) {
       
       try {
         log.debug("scheduling plaintext hashdatainput dialog");
 
+        // avoid double-clicks on hashdata link
         SwingUtilities.invokeAndWait(new Runnable() {
 
           @Override
@@ -1103,7 +1075,7 @@ public class SimpleGUI implements BKUGUIFacade {
             log.debug("show plaintext hashdatainput dialog");
 
             ActionListener l = helpListener.getActionListener();
-            HashDataViewer.showHashDataInput(contentPane, signedReferences, messages, saveListener, saveCommand, l);
+            HashDataViewer.showHashDataInput(contentPane, hashDataInput, messages, saveListener, saveCommand, l);
           }
         });
         
@@ -1114,85 +1086,16 @@ public class SimpleGUI implements BKUGUIFacade {
       }
     }
     
-//    private void showPlainTextHashDataInputDialog(final String hashDataText, final ActionListener saveListener, final String saveCommand, final ActionListener cancelListener, final String cancelCommand) {
-//      
-//      log.debug("scheduling plaintext hashdatainput dialog");
-//      
-//      SwingUtilities.invokeLater(new Runnable() {
-//
-//        @Override
-//        public void run() {
-//          
-//          log.debug("show plaintext hashdatainput dialog");
-//      
-//          mainPanel.removeAll();
-//          buttonPanel.removeAll();
-//
-//          helpListener.setHelpTopic(HELP_HASHDATA);
-//
-//          JLabel refIdLabel = new JLabel();
-//          refIdLabel.setFont(refIdLabel.getFont().deriveFont(refIdLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
-//          refIdLabel.setText(messages.getString(MESSAGE_HASHDATA)); //MessageFormat.format(refIdLabelPattern, new Object[]{refId}));
-//
-//          JTextArea hashDataTextArea = new JTextArea(hashDataText);
-//          hashDataTextArea.setEditable(false);
-//          hashDataTextArea.setFont(new Font(HASHDATA_FONT, hashDataTextArea.getFont().getStyle(), hashDataTextArea.getFont().getSize()));
-//          hashDataTextArea.setLineWrap(true);
-//          hashDataTextArea.setWrapStyleWord(true);
-//
-//          JScrollPane hashDataScrollPane = new JScrollPane(hashDataTextArea);
-//
-//          GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
-//          mainPanel.setLayout(mainPanelLayout);
-//
-//          mainPanelLayout.setHorizontalGroup(
-//             mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
-//              .addGroup(mainPanelLayout.createSequentialGroup()
-//                .addComponent(refIdLabel)
-//                .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED, 0, Short.MAX_VALUE)
-//                .addComponent(helpLabel))
-//              .addComponent(hashDataScrollPane, 0, 0, Short.MAX_VALUE));
-//
-//          mainPanelLayout.setVerticalGroup(
-//            mainPanelLayout.createSequentialGroup()
-//              .addGroup(mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
-//                .addComponent(refIdLabel)
-//                .addComponent(helpLabel))
-//              .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-//              .addComponent(hashDataScrollPane, 0, 0, Short.MAX_VALUE));
-//
-//          JButton backButton = new JButton();
-//          backButton.setFont(backButton.getFont().deriveFont(backButton.getFont().getStyle() & ~java.awt.Font.BOLD));
-//          backButton.setText(messages.getString(BUTTON_BACK));
-//          backButton.setActionCommand(cancelCommand);
-//          backButton.addActionListener(cancelListener);
-//
-//          GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
-//          buttonPanel.setLayout(buttonPanelLayout);
-//
-//          buttonPanelLayout.setHorizontalGroup(
-//            buttonPanelLayout.createSequentialGroup()
-//                  .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-//                  .addComponent(backButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
-//          buttonPanelLayout.setVerticalGroup(
-//            buttonPanelLayout.createSequentialGroup()
-//              .addComponent(backButton));
-//
-//          contentPanel.validate();
-//        }
-//      });
-//    }
-
-    private void showMultipleHashDataInputDialog(final TableModel signedReferences, final ActionListener cancelListener, final String cancelCommand, final ActionListener saveListener, final String saveCommand) {
+    private void showSignedReferencesListDialog(final HashDataTableModel signedReferences, final ActionListener backListener, final String backCommand) {
       
-      log.debug("scheduling multiple hashdatainput dialog");
+      log.debug("scheduling signed references list dialog");
       
       SwingUtilities.invokeLater(new Runnable() {
 
         @Override
         public void run() {
           
-          log.debug("show multiple hashdatainput dialog");
+          log.debug("show signed references list dialog");
           
           mainPanel.removeAll();
           buttonPanel.removeAll();
@@ -1208,12 +1111,12 @@ public class SimpleGUI implements BKUGUIFacade {
           String refIdLabelPattern = messages.getString(MESSAGE_HASHDATALIST);
           refIdLabel.setText(MessageFormat.format(refIdLabelPattern, new Object[]{signedReferences.getRowCount()}));
 
-          JTable hashDataTable = new JTable();
-          hashDataTable.setDefaultRenderer(HashDataInput.class, new HyperLinkRenderer());
-          hashDataTable.setModel(signedReferences);
+          JTable hashDataTable = new JTable(signedReferences);
+          hashDataTable.setDefaultRenderer(HashDataInput.class, signedReferences.getRenderer());
+          
           hashDataTable.setTableHeader(null);
   //        hashDataTable.setShowVerticalLines(false);
-  //        hashDataTable.setRowSelectionAllowed(false);
+          hashDataTable.setRowSelectionAllowed(true);
 //          TableColumn selectCol = hashDataTable.getColumnModel().getColumn(1);
 //          selectCol.setMinWidth(CHECKBOX_WIDTH);
 //          selectCol.setMaxWidth(CHECKBOX_WIDTH);
@@ -1225,54 +1128,46 @@ public class SimpleGUI implements BKUGUIFacade {
 
           GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
           mainPanel.setLayout(mainPanelLayout);
+          
+          GroupLayout.SequentialGroup messageHorizontal = mainPanelLayout.createSequentialGroup()
+                  .addComponent(refIdLabel);
+          
+          GroupLayout.ParallelGroup messageVertical = mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
+                  .addComponent(refIdLabel);
+          
+          if (!renderHeaderPanel) {
+            messageHorizontal
+                    .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED, 0, Short.MAX_VALUE)
+                    .addComponent(helpLabel);
+            messageVertical
+                    .addComponent(helpLabel);
+          }
 
           mainPanelLayout.setHorizontalGroup(
             mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
-              .addGroup(mainPanelLayout.createSequentialGroup()
-                .addComponent(refIdLabel)
-                .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED, 0, Short.MAX_VALUE)
-                .addComponent(helpLabel))
+              .addGroup(messageHorizontal)
               .addComponent(hashDataScrollPane, 0, 0, Short.MAX_VALUE));
 
           mainPanelLayout.setVerticalGroup(
             mainPanelLayout.createSequentialGroup()
-              .addGroup(mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
-                .addComponent(refIdLabel)
-                .addComponent(helpLabel))
+              .addGroup(messageVertical)
               .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
               .addComponent(hashDataScrollPane, 0, 0, hashDataTable.getPreferredSize().height+3));
 
           JButton backButton = new JButton();
           backButton.setFont(backButton.getFont().deriveFont(backButton.getFont().getStyle() & ~java.awt.Font.BOLD));
           backButton.setText(messages.getString(BUTTON_BACK));
-          backButton.setActionCommand(cancelCommand);
-          backButton.addActionListener(cancelListener);
+          backButton.setActionCommand(backCommand);
+          backButton.addActionListener(backListener);
 
-                GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
-                buttonPanel.setLayout(buttonPanelLayout);
-
-                GroupLayout.SequentialGroup buttonHorizontal = buttonPanelLayout.createSequentialGroup()
-                        .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                        .addComponent(backButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE);
-                GroupLayout.ParallelGroup buttonVertical = buttonPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
-                        .addComponent(backButton);
-                
-                if (renderCancelButton) {
-                  //render save button
-                  JButton saveButton = new JButton();
-                  saveButton.setText(messages.getString(BUTTON_SAVE));
-                  saveButton.setActionCommand(saveCommand);
-                  saveButton.addActionListener(saveListener);
+          GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
+          buttonPanel.setLayout(buttonPanelLayout);
 
-                  buttonHorizontal
-                          .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                          .addComponent(backButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE);
-                  buttonVertical
-                          .addComponent(saveButton);
-                }
-                
-                buttonPanelLayout.setHorizontalGroup(buttonHorizontal);
-                buttonPanelLayout.setVerticalGroup(buttonVertical);
+          buttonPanelLayout.setHorizontalGroup(buttonPanelLayout.createSequentialGroup()
+                  .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
+                  .addComponent(backButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
+          buttonPanelLayout.setVerticalGroup(buttonPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
+                  .addComponent(backButton));
 
           contentPanel.validate();
         }
@@ -1357,42 +1252,13 @@ public class SimpleGUI implements BKUGUIFacade {
               }  
           }
           log.debug("done saving hashdatainput");
-          okListener.actionPerformed(new ActionEvent(fileDialog, ActionEvent.ACTION_PERFORMED, okCommand));
+          if (okListener != null) {
+            okListener.actionPerformed(new ActionEvent(fileDialog, ActionEvent.ACTION_PERFORMED, okCommand));
+          }
         }
       });
     }
     
-//    private static String getText(HashDataInput hdi) throws IOException {
-//      ByteArrayOutputStream baos = null;
-//      try {
-//        InputStream hashDataIS = hdi.getHashDataInput();
-//        if (hashDataIS == null) {
-//          log.error("No HashDataInput stream for reference " + hdi.getReferenceId());
-//          return null;
-//        } else {
-//          baos = new ByteArrayOutputStream(hashDataIS.available());
-//          int c;
-//          while ((c = hashDataIS.read()) != -1) {
-//              baos.write(c);
-//          }
-//          String encoding = hdi.getEncoding();
-//          if (encoding == null) {
-//            //default for URL-encoded
-//            encoding = "UTF-8";
-//          }
-//          return baos.toString(encoding);
-//        }
-//      } catch (IOException ex) {
-//          log.error("Failed to read HashDataInput for reference " + hdi.getReferenceId() + ": " + ex.getMessage());
-//          throw ex; 
-//      } finally {
-//          try {
-//              baos.close();
-//          } catch (IOException ex) {
-//          }
-//      }
-//    }
-    
     private void registerHelpListener(ActionListener helpListener) {
       if (helpListener != null) {
         this.helpListener = new HelpMouseListener(helpListener);
@@ -1407,4 +1273,34 @@ public class SimpleGUI implements BKUGUIFacade {
         });
       }
     }
+    
+  private static int initButtonSize(ResourceBundle messages, boolean renderCancelButton) {
+
+    int buttonSize = 0;
+    
+    JButton b = new JButton();
+    b.setText(messages.getString(BUTTON_OK));
+    if (b.getPreferredSize().width > buttonSize) {
+      buttonSize = b.getPreferredSize().width;
+    }
+    b.setText(messages.getString(BUTTON_SIGN));
+    if (b.getPreferredSize().width > buttonSize) {
+      buttonSize = b.getPreferredSize().width;
+    }
+    b.setText(messages.getString(BUTTON_BACK));
+    if (b.getPreferredSize().width > buttonSize) {
+      buttonSize = b.getPreferredSize().width;
+    }
+    b.setText(messages.getString(BUTTON_SAVE));
+    if (b.getPreferredSize().width > buttonSize) {
+      buttonSize = b.getPreferredSize().width;
+    }
+    if (renderCancelButton) {
+      b.setText(messages.getString(BUTTON_CANCEL));
+      if (b.getPreferredSize().width > buttonSize) {
+        buttonSize = b.getPreferredSize().width;
+      }
+    }
+    return buttonSize;
+  }
 }
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/DefaultHelpListener.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/DefaultHelpListener.java
index f03bf158..502f93ec 100644
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/DefaultHelpListener.java
+++ b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/DefaultHelpListener.java
@@ -17,7 +17,6 @@
 package at.gv.egiz.bku.gui;
 
 import java.applet.AppletContext;
-import java.lang.reflect.InvocationTargetException;
 import java.net.URL;
 import java.util.Locale;
 import javax.swing.SwingUtilities;
@@ -61,7 +60,6 @@ public class DefaultHelpListener extends AbstractHelpListener {
 //    try {
       log.debug("schedule help dialog");
 
-//      SwingUtilities.invokeAndWait(new Runnable() {
       SwingUtilities.invokeLater(new Runnable() {
 
         @Override
@@ -76,10 +74,5 @@ public class DefaultHelpListener extends AbstractHelpListener {
           }
         }
       });
-//    } catch (InterruptedException ex) {
-//      log.error("Failed to display HelpViewer: " + ex.getMessage(), ex);
-//    } catch (InvocationTargetException ex) {
-//      log.error("Failed to display HelpViewer: " + ex.getMessage(), ex);
-//    }
   }
 }
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataTableModel.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataTableModel.java
index e8566fa6..a6709860 100644
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataTableModel.java
+++ b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataTableModel.java
@@ -14,34 +14,46 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 package at.gv.egiz.bku.gui;
 
 import at.gv.egiz.stal.HashDataInput;
-import java.util.ArrayList;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Cursor;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
 import java.util.List;
-import java.util.Vector;
+import javax.swing.JDialog;
+import javax.swing.JLabel;
+import javax.swing.JOptionPane;
+import javax.swing.JTable;
 import javax.swing.table.DefaultTableModel;
+import javax.swing.table.TableCellRenderer;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 
 /**
- *
- * @author clemens
+ * 
+ * @author Clemens Orthacker <clemens.orthacker@iaik.tugraz.at>
  */
 class HashDataTableModel extends DefaultTableModel {
 
-  protected List<HashDataInput> signedReferences;
+  protected static final Log log = LogFactory.getLog(HashDataTableModel.class);
   
-  protected Class[] types = new Class[]{
-    java.lang.String.class, java.lang.Boolean.class
-  };
-
-  public HashDataTableModel(List<HashDataInput> signedReferences) {
-    super(0, 2);
-    this.signedReferences = signedReferences;
-    for (HashDataInput hashDataInput : signedReferences) {
-      String desc = hashDataInput.getReferenceId() + " (" + hashDataInput.getMimeType() + ")";
-      addRow(new Object[]{desc, new Boolean(true)});
+  protected Class[] types = new Class[]{HashDataInput.class};
+  protected List<HashDataInput> hashDataInputs;
+  private HashDataLinkRenderer renderer;
+  
+  public HashDataTableModel(List<HashDataInput> hashDataInputs) {
+    super(0, 1);
+    this.hashDataInputs = hashDataInputs;
+    for (HashDataInput hdi : hashDataInputs) {
+      addRow(new Object[]{hdi});
     }
+    this.renderer = new HashDataLinkRenderer();
   }
 
   @Override
@@ -51,18 +63,49 @@ class HashDataTableModel extends DefaultTableModel {
 
   @Override
   public boolean isCellEditable(int rowIndex, int columnIndex) {
-    if (columnIndex == 1)
-      return true;
     return false;
   }
 
-  public List<HashDataInput> getSelectedHashData() {
-    ArrayList<HashDataInput> selection = new ArrayList<HashDataInput>();
-    for (int i = 0; i < dataVector.size(); i++) {
-      if ((Boolean) ((Vector) dataVector.get(i)).elementAt(1)) {
-        selection.add(signedReferences.get(i));
-      }
+  
+  
+  public HashDataLinkRenderer getRenderer() {
+    return renderer;
+  }
+
+  public class HashDataLinkRenderer extends JLabel
+          implements TableCellRenderer {
+//        extends DefaultTableCellRenderer {
+    
+//    protected ActionListener saveHashDataListener;
+//
+//    public HashDataLinkRenderer(ActionListener saveHashDataListener) {
+//      this.saveHashDataListener = saveHashDataListener;
+//    }
+    
+    @Override
+    public Component getTableCellRendererComponent(JTable table,
+            Object value,
+            boolean isSelected,
+            boolean hasFocus,
+            final int row,
+            int column) {
+      final HashDataInput hdi = (HashDataInput) value;
+      log.debug("render hashdatainput " + hdi.getReferenceId() + " - (" + row + "," + column + ") " + isSelected + hasFocus);
+      setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
+      setFont(getFont().deriveFont(getFont().getStyle() & ~java.awt.Font.BOLD));
+      setText(hdi.getReferenceId() + " (" + hdi.getMimeType() + ")");
+      addMouseListener(new MouseAdapter() {
+
+        @Override
+        public void mouseClicked(MouseEvent e) {
+          log.debug("received mouseclick on " + hdi.getReferenceId());
+//          saveHashDataListener.actionPerformed();
+          JOptionPane.showInputDialog(hashDataInputs.get(row).getReferenceId());
+        }
+        
+      });
+
+      return this;
     }
-    return selection;
   }
 }
\ No newline at end of file
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataViewer.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataViewer.java
index 7b77faeb..db66bd52 100644
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataViewer.java
+++ b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataViewer.java
@@ -23,18 +23,15 @@ import java.awt.Cursor;
 import java.awt.Dimension;
 import java.awt.Font;
 import java.awt.Frame;
-import java.awt.Image;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.io.BufferedReader;
-import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.Reader;
 import java.nio.charset.Charset;
 import java.text.MessageFormat;
-import java.util.List;
 import java.util.ResourceBundle;
 import javax.swing.GroupLayout;
 import javax.swing.ImageIcon;
@@ -69,12 +66,12 @@ public class HashDataViewer extends JDialog
    * 
    * @param signedReferences currently, only one hashdata input (the first in the list) is displayed
    */
-  public static void showHashDataInput(List<HashDataInput> hashDataInputs,
+  public static void showHashDataInput(HashDataInput hashDataInput,
           ResourceBundle messages,
           ActionListener saveListener,
           String saveCommand,
           ActionListener helpListener) {
-    showHashDataInput(null, hashDataInputs, messages, saveListener, saveCommand, helpListener);
+    showHashDataInput(null, hashDataInput, messages, saveListener, saveCommand, helpListener);
   }
   
   /**
@@ -82,7 +79,7 @@ public class HashDataViewer extends JDialog
    * @param frameComp owner
    */
   public static void showHashDataInput(Component frameComp,
-          List<HashDataInput> hashDataInputs,
+          HashDataInput hashDataInput,
           ResourceBundle messages,
           ActionListener saveListener,
           String saveCommand,
@@ -94,7 +91,7 @@ public class HashDataViewer extends JDialog
     }
     dialog = new HashDataViewer(frame, 
             messages,
-            hashDataInputs, 
+            hashDataInput, 
             saveListener, 
             saveCommand, 
             helpListener);
@@ -103,35 +100,33 @@ public class HashDataViewer extends JDialog
 
   private HashDataViewer(Frame frame,
           ResourceBundle messages,
-          List<HashDataInput> hashDataInputs,
+          HashDataInput hashDataInput,
           ActionListener saveListener,
           String saveCommand,
           ActionListener helpListener) {
     super(frame, messages.getString(BKUGUIFacade.WINDOWTITLE_VIEWER), true);
     this.messages = messages;
 
-    HashDataInput hashData = hashDataInputs.get(0);
-    
     Charset cs;
-    if (hashData.getEncoding() == null) {
+    if (hashDataInput.getEncoding() == null) {
       cs = Charset.forName("UTF-8");
     } else {
       try {
-        cs = Charset.forName(hashData.getEncoding());
+        cs = Charset.forName(hashDataInput.getEncoding());
       } catch (Exception ex) {
-        log.debug("charset " + hashData.getEncoding() + " not supported, assuming UTF-8: " + ex.getMessage());
+        log.debug("charset " + hashDataInput.getEncoding() + " not supported, assuming UTF-8: " + ex.getMessage());
         cs = Charset.forName("UTF-8");
       }  
     }
     
     
-    InputStreamReader isr = new InputStreamReader(hashData.getHashDataInput(), cs);
+    InputStreamReader isr = new InputStreamReader(hashDataInput.getHashDataInput(), cs);
     Reader content = new BufferedReader(isr);
   
     JPanel hashDataPanel = createViewerPanel(
             messages.getString(BKUGUIFacade.MESSAGE_HASHDATA), 
             content, 
-            hashData.getMimeType(), 
+            hashDataInput.getMimeType(), 
             helpListener);
     JPanel buttonPanel = createButtonPanel(saveListener, saveCommand);
     initContentPane(new Dimension(600, 400), hashDataPanel, buttonPanel);
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HyperLinkRenderer.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HyperLinkRenderer.java
deleted file mode 100644
index d9606177..00000000
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HyperLinkRenderer.java
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright 2008 Federal Chancellery Austria and
- * Graz University of Technology
- * 
- * Licensed 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 at.gv.egiz.bku.gui;
-
-import at.gv.egiz.stal.HashDataInput;
-import java.awt.Color;
-import java.awt.Component;
-import javax.swing.JLabel;
-import javax.swing.JTable;
-import javax.swing.table.TableCellRenderer;
-
-/**
- * 
- * @author Clemens Orthacker <clemens.orthacker@iaik.tugraz.at>
- */
-public class HyperLinkRenderer extends JLabel implements TableCellRenderer {
-
-  @Override
-  public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
-    HashDataInput hdi = (HashDataInput) value;
-    setText(hdi.getReferenceId() + " (" + hdi.getMimeType() + ")");
-    setBackground(Color.CYAN);
-    return this;
-  }
-        
-//        extends DefaultTableCellRenderer {
-//
-//  @Override
-//  public void setValue(Object value) {
-//    HashDataInput hdi = (HashDataInput) value;
-//    setText(hdi.getReferenceId() + " (" + hdi.getMimeType() + ")");
-//  }
-}
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/ImagePanel.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/ImagePanel.java
index 271c0b65..6a738acb 100644
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/ImagePanel.java
+++ b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/ImagePanel.java
@@ -24,6 +24,7 @@ import javax.swing.ImageIcon;
 import javax.swing.JPanel;
 
 /**
+ * paints the background image in the lower left corner of the component
  * 
  * @author Clemens Orthacker <clemens.orthacker@iaik.tugraz.at>
  */
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/SimpleHashDataTableModel.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/SimpleHashDataTableModel.java
deleted file mode 100644
index 463dbe81..00000000
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/SimpleHashDataTableModel.java
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright 2008 Federal Chancellery Austria and
- * Graz University of Technology
- *
- * Licensed 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 at.gv.egiz.bku.gui;
-
-import at.gv.egiz.stal.HashDataInput;
-import java.awt.event.ActionListener;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Vector;
-import javax.swing.table.DefaultTableModel;
-
-/**
- *
- * @author clemens
- */
-class SimpleHashDataTableModel extends DefaultTableModel {
-
-  protected List<HashDataInput> signedReferences;
-  
-  protected Class[] types = new Class[]{
-    java.lang.String.class
-  };
-
-  public SimpleHashDataTableModel(List<HashDataInput> signedReferences) {
-    super(0, 1);
-    this.signedReferences = signedReferences;
-    for (HashDataInput hashDataInput : signedReferences) {
-      
-//      String desc = hashDataInput.getReferenceId() + " (" + hashDataInput.getMimeType() + ")";
-      addRow(new Object[]{hashDataInput});
-    }
-  }
-
-  @Override
-  public Class getColumnClass(int columnIndex) {
-    return types[columnIndex];
-  }
-
-  @Override
-  public boolean isCellEditable(int rowIndex, int columnIndex) {
-    if (columnIndex == 1)
-      return true;
-    return false;
-  }
-}
\ No newline at end of file