1.1-RC6 (pinpad, pinmgmt, secureviewer)

git-svn-id: https://joinup.ec.europa.eu/svn/mocca/trunk@323 8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4

4 files changed, 759 insertions, 548 deletions

diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIFacade.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIFacade.java
index 1043b6a1..4b079428 100644
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIFacade.java
+++ b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIFacade.java
@@ -43,6 +43,7 @@ public interface BKUGUIFacade {
   
   public static final String MESSAGES_BUNDLE = "at/gv/egiz/bku/gui/Messages";
   public static final String DEFAULT_BACKGROUND = "/images/BackgroundChipperling.png";
+  public static final String DEFAULT_ICON = "/images/ChipperlingLogo.png";
   public static final String HELP_IMG = "/images/help.png";
   public static final String HASHDATA_FONT = "Monospaced";
   public static final Color ERROR_COLOR = Color.RED;
@@ -58,6 +59,7 @@ public interface BKUGUIFacade {
   public static final String TITLE_WAIT = "title.wait";
   public static final String TITLE_HASHDATA = "title.hashdata";
   public static final String WINDOWTITLE_SAVE = "windowtitle.save";
+  public static final String WINDOWTITLE_ERROR = "windowtitle.error";
   public static final String WINDOWTITLE_SAVEDIR = "windowtitle.savedir";
   public static final String WINDOWTITLE_OVERWRITE = "windowtitle.overwrite";
   public static final String WINDOWTITLE_VIEWER = "windowtitle.viewer";
@@ -102,42 +104,36 @@ public interface BKUGUIFacade {
 
   public enum Style { tiny, simple, advanced };
     
-//  public void init(Container contentPane, Locale locale, Style guiStyle, URL background, ActionListener helpListener);
-
   /**
    * BKUWorker needs to init signature card with locale
    * @return
    */
   public Locale getLocale();
 
-//  public void showWelcomeDialog();
-
-  /**
-   * 
-   * @param waitMessage if null, a simple 'please wait' text is displayed
-   */
-//  public void showWaitDialog(String waitMessage);
-
-//  public void showInsertCardDialog(ActionListener cancelListener, String actionCommand);
-
-//  public void showCardNotSupportedDialog(ActionListener cancelListener, String actionCommand);
-
   public void showCardPINDialog(PINSpec pinSpec, int numRetries,
           ActionListener okListener, String okCommand,
           ActionListener cancelListener, String cancelCommand);
 
-//  public void showCardPINRetryDialog(PINSpec pinSpec, int numRetries, ActionListener okListener, String okCommand, ActionListener cancelListener, String cancelCommand);
-
-  public void showSignaturePINDialog(PINSpec pinSpec, int numRetries, ActionListener signListener, String signCommand, ActionListener cancelListener, String cancelCommand, ActionListener hashdataListener, String hashdataCommand);
-
-//  public void showSignaturePINRetryDialog(PINSpec pinSpec, int numRetries, ActionListener okListener, String okCommand, ActionListener cancelListener, String cancelCommand, ActionListener hashdataListener, String hashdataCommand);
+  public void showSignaturePINDialog(PINSpec pinSpec, int numRetries,
+          ActionListener signListener, String signCommand,
+          ActionListener cancelListener, String cancelCommand,
+          ActionListener viewerListener, String viewerCommand);
 
-//  public void showPinpadSignaturePINDialog(PINSpec pinSpec, int retries);
+  public void showPinpadSignaturePINDialog(PINSpec pinSpec, int numRetries, 
+          ActionListener viewerListener, String viewerCommand);
 
   public char[] getPin();
 
-  public void showSecureViewer(List<HashDataInput> signedReferences,
-          ActionListener okListener, String okCommand);
+  /**
+   *
+   * @param dataToBeSigned
+   * @param backListener if list of references hides pin dialog, backListener
+   * receives an action when user hits 'back' button (i.e. whenever the pin-dialog
+   * needs to be re-paint)
+   * @param backCommand
+   */
+  public void showSecureViewer(List<HashDataInput> dataToBeSigned,
+          ActionListener backListener, String backCommand);
 
   public void showErrorDialog(String errorMsgKey, Object[] errorMsgParams,
           ActionListener okListener, String okCommand);
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIImpl.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIImpl.java
index 928be249..a7eebbfd 100644
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIImpl.java
+++ b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/BKUGUIImpl.java
@@ -71,6 +71,7 @@ public class BKUGUIImpl implements BKUGUIFacade {
     }
 
     protected HelpMouseListener helpListener;
+    protected SecureViewerDialog secureViewer;
     
     protected Container contentPane;
     protected ResourceBundle messages;
@@ -145,13 +146,16 @@ public class BKUGUIImpl implements BKUGUIFacade {
                 @Override
                 public void run() {
                   
-                  log.debug("initializing gui");
+                  log.debug("initializing gui [" + Thread.currentThread().getName() + "]");
 
                   if (renderIconPanel) {
                     initIconPanel(background);
                     initContentPanel(null);
                   } else {
-                    initContentPanel(background);
+                    initContentPanel((background == null) ?
+                      getClass().getResource(DEFAULT_BACKGROUND) :
+                      background
+                    );
                   }
                   
                   GroupLayout layout = new GroupLayout(contentPane);
@@ -159,15 +163,27 @@ public class BKUGUIImpl implements BKUGUIFacade {
                   
                   if (renderIconPanel) {
                     layout.setHorizontalGroup(layout.createSequentialGroup()
-                        .addComponent(iconPanel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-                        .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
-                        .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));
+                            .addContainerGap()
+                            .addComponent(iconPanel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
+                            .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
+                            .addComponent(contentPanel, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
+                            .addContainerGap());
+                    layout.setVerticalGroup(layout.createSequentialGroup()
+                            .addContainerGap()
+                            .addGroup(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))
+                            .addContainerGap());
                   } else {
-                    layout.setHorizontalGroup(layout.createSequentialGroup().addComponent(contentPanel));
-                    layout.setVerticalGroup(layout.createSequentialGroup().addComponent(contentPanel));
+                    layout.setHorizontalGroup(layout.createSequentialGroup()
+                            // left border
+                            .addContainerGap()
+                            .addComponent(contentPanel)
+                            .addContainerGap());
+                    layout.setVerticalGroup(layout.createSequentialGroup()
+                            .addContainerGap()
+                            .addComponent(contentPanel)
+                            .addContainerGap());
                   }
                 }
             });
@@ -178,11 +194,12 @@ public class BKUGUIImpl implements BKUGUIFacade {
     
     protected void initIconPanel(URL background) {
       if (background == null) {
-        background = getClass().getResource(DEFAULT_BACKGROUND);
+        background = getClass().getResource(DEFAULT_ICON);
       }
       if ("file".equals(background.getProtocol())) {
-        log.warn("file:// background images not permitted: " + background);
-        background = getClass().getResource(DEFAULT_BACKGROUND);
+        log.warn("file:// background images not permitted: " + background +
+                ", loading default background");
+        background = getClass().getResource(DEFAULT_ICON);
       }
       log.debug("loading icon panel background " + background);
       
@@ -194,26 +211,24 @@ public class BKUGUIImpl implements BKUGUIFacade {
       iconPanel.setLayout(iconPanelLayout);
       iconPanelLayout.setHorizontalGroup(
         iconPanelLayout.createSequentialGroup()
-          .addContainerGap()
           .addComponent(iconLabel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE));
-          // no gap here (contentPanel has containerGap)
       iconPanelLayout.setVerticalGroup(
         iconPanelLayout.createSequentialGroup()
-          .addContainerGap()
-          .addComponent(iconLabel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-          .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE));
+          .addComponent(iconLabel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE));
     }
 
     protected void initContentPanel(URL background) { 
 
+//      if (background == null) {
+//        background = getClass().getResource(DEFAULT_BACKGROUND);
+//      }
       if (background == null) {
-        background = getClass().getResource(DEFAULT_BACKGROUND);
-      }
-      if (background == null) {
+        log.debug("no background image set");
           contentPanel = new JPanel();
       } else {
           if ("file".equals(background.getProtocol())) {
-            log.warn("file:// background images not permitted: " + background);
+            log.warn("file:// background images not permitted: " + background +
+                    ", loading default background");
             background = getClass().getResource(DEFAULT_BACKGROUND);
           }
           log.debug("loading background " + background);
@@ -257,34 +272,29 @@ public class BKUGUIImpl implements BKUGUIFacade {
       GroupLayout contentPanelLayout = new GroupLayout(contentPanel);
       contentPanel.setLayout(contentPanelLayout);
 
-      GroupLayout.ParallelGroup horizontalContentInner = contentPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING);
+      // align header, main and button to the right
+      GroupLayout.ParallelGroup horizontalContent =
+              contentPanelLayout.createParallelGroup(GroupLayout.Alignment.TRAILING); //LEADING);
+      GroupLayout.SequentialGroup verticalContent =
+              contentPanelLayout.createSequentialGroup();
+
       if (renderHeaderPanel) {
-        horizontalContentInner
+        horizontalContent
                 .addComponent(headerPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE);
+        verticalContent
+                .addComponent(headerPanel, 0, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
+                .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED);
+
       }
-      horizontalContentInner
+      horizontalContent
               .addComponent(mainPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-              .addComponent(buttonPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE);
-      GroupLayout.SequentialGroup horizontalContentOuter = contentPanelLayout.createSequentialGroup();
-      if (!renderIconPanel) {
-        horizontalContentOuter
-                .addContainerGap();
-      }
-      horizontalContentOuter
-              .addGroup(horizontalContentInner)
-              .addContainerGap();
-      contentPanelLayout.setHorizontalGroup(horizontalContentOuter);
-      
-      GroupLayout.SequentialGroup verticalContent = contentPanelLayout.createSequentialGroup();
-      verticalContent.addContainerGap();
-      if (renderHeaderPanel) {
-        verticalContent.addComponent(headerPanel, 0, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-          .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED);
-      }
-      verticalContent.addComponent(mainPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) 
-        .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
-        .addComponent(buttonPanel, 0, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-        .addContainerGap();
+              .addComponent(buttonPanel, 0, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE); //Short.MAX_VALUE);
+      verticalContent
+              .addComponent(mainPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
+              .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
+              .addComponent(buttonPanel, 0, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE);
+
+      contentPanelLayout.setHorizontalGroup(horizontalContent); //Outer);
       contentPanelLayout.setVerticalGroup(verticalContent);
     }
 
@@ -521,7 +531,7 @@ public class BKUGUIImpl implements BKUGUIFacade {
             @Override
             public void run() {
 
-              log.debug("show card-pin dialog");
+              log.debug("show card-pin dialog [" + Thread.currentThread().getName() + "]");
       
                 mainPanel.removeAll();
                 buttonPanel.removeAll();
@@ -653,7 +663,6 @@ public class BKUGUIImpl implements BKUGUIFacade {
                 buttonPanel.setLayout(buttonPanelLayout);
 
                 GroupLayout.SequentialGroup buttonHorizontal = buttonPanelLayout.createSequentialGroup()
-                        .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                         .addComponent(okButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE);
                 GroupLayout.Group buttonVertical;
                 
@@ -701,6 +710,128 @@ public class BKUGUIImpl implements BKUGUIFacade {
 //    }
 
     @Override
+    public void showPinpadSignaturePINDialog(final PINSpec pinSpec, final int numRetries,
+//            final ActionListener cancelListener, final String cancelCommand,
+            final ActionListener hashdataListener, final String hashdataCommand) {
+
+        log.debug("scheduling pinpad signature-pin dialog");
+
+        SwingUtilities.invokeLater(new Runnable() {
+
+            @Override
+            public void run() {
+
+              log.debug("show pinpad signature-pin dialog [" + Thread.currentThread().getName() + "]");
+
+                mainPanel.removeAll();
+                buttonPanel.removeAll();
+
+                if (renderHeaderPanel) {
+                  if (numRetries < 0) {
+                      titleLabel.setText(getMessage(TITLE_SIGN));
+                  } else {
+                      titleLabel.setText(getMessage(TITLE_RETRY));
+                  }
+                }
+
+                JLabel infoLabel = new JLabel();
+                if (numRetries < 0) {
+                  infoLabel.setFont(infoLabel.getFont().deriveFont(infoLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
+                  if (shortText) {
+                    infoLabel.setText(getMessage(MESSAGE_HASHDATALINK_TINY));
+                  } else {
+                    infoLabel.setText(getMessage(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 {
+                  String retryPattern;
+                  if (numRetries < 2) {
+                    retryPattern = getMessage(MESSAGE_LAST_RETRY);
+                  } else {
+                    retryPattern = getMessage(MESSAGE_RETRIES);
+                  }
+                  infoLabel.setText(MessageFormat.format(retryPattern, new Object[]{String.valueOf(numRetries)}));
+                  infoLabel.setFont(infoLabel.getFont().deriveFont(infoLabel.getFont().getStyle() | java.awt.Font.BOLD));
+                  infoLabel.setForeground(ERROR_COLOR);
+                  helpListener.setHelpTopic(HELP_RETRY);
+                }
+
+                String pinSize = String.valueOf(pinSpec.getMinLength());
+                if (pinSpec.getMinLength() != pinSpec.getMaxLength()) {
+                    pinSize += "-" + pinSpec.getMaxLength();
+                }
+
+                String msgPattern = getMessage(MESSAGE_ENTERPIN_PINPAD);
+                String msg = MessageFormat.format(msgPattern, new Object[] {
+                  pinSpec.getLocalizedName(), pinSize });
+
+                JLabel msgLabel = new JLabel();
+                msgLabel.setFont(msgLabel.getFont().deriveFont(msgLabel.getFont().getStyle() & ~Font.BOLD));
+                msgLabel.setText(msg);
+
+                GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
+                mainPanel.setLayout(mainPanelLayout);
+
+                GroupLayout.SequentialGroup infoHorizontal = mainPanelLayout.createSequentialGroup()
+                        .addComponent(infoLabel);
+                GroupLayout.ParallelGroup infoVertical = mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
+                        .addComponent(infoLabel);
+
+                if (!renderHeaderPanel) {
+                  infoHorizontal
+                          .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED, 0, Short.MAX_VALUE)
+                          .addComponent(helpLabel);
+                  infoVertical
+                          .addComponent(helpLabel);
+                }
+
+                mainPanelLayout.setHorizontalGroup(
+                  mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
+                    .addGroup(infoHorizontal)
+                    .addComponent(msgLabel));
+
+                mainPanelLayout.setVerticalGroup(
+                  mainPanelLayout.createSequentialGroup()
+                    .addGroup(infoVertical)
+                    .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
+                    .addComponent(msgLabel));
+
+                //no cancel button (cancel via pinpad)
+//                if (renderCancelButton) {
+//                    JButton cancelButton = new JButton();
+//                    cancelButton.setFont(cancelButton.getFont().deriveFont(cancelButton.getFont().getStyle() & ~java.awt.Font.BOLD));
+//                    cancelButton.setText(getMessage(BUTTON_CANCEL));
+//                    cancelButton.setActionCommand(cancelCommand);
+//                    cancelButton.addActionListener(cancelListener);
+//
+//                    GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
+//                    buttonPanel.setLayout(buttonPanelLayout);
+//
+//                    GroupLayout.SequentialGroup buttonHorizontal = buttonPanelLayout.createSequentialGroup()
+//                            .addComponent(cancelButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE);
+//                    GroupLayout.SequentialGroup buttonVertical = buttonPanelLayout.createSequentialGroup()
+//                            .addComponent(cancelButton);
+//
+//                    buttonPanelLayout.setHorizontalGroup(buttonHorizontal);
+//                    buttonPanelLayout.setVerticalGroup(buttonVertical);
+//                }
+
+                contentPanel.validate();
+            }
+        });
+    }
+
+    @Override
     public void showSignaturePINDialog(final PINSpec pinSpec, final int numRetries,
             final ActionListener signListener, final String signCommand,
             final ActionListener cancelListener, final String cancelCommand,
@@ -717,7 +848,7 @@ public class BKUGUIImpl implements BKUGUIFacade {
             @Override
             public void run() {
               
-              log.debug("show signature-pin dialog");
+              log.debug("show signature-pin dialog [" + Thread.currentThread().getName() + "]");
       
                 mainPanel.removeAll();
                 buttonPanel.removeAll();
@@ -730,6 +861,38 @@ public class BKUGUIImpl implements BKUGUIFacade {
                   }
                 }
 
+                JLabel infoLabel = new JLabel();
+                if (numRetries < 0) {
+                  infoLabel.setFont(infoLabel.getFont().deriveFont(infoLabel.getFont().getStyle() & ~java.awt.Font.BOLD));
+                  if (shortText) {
+                    infoLabel.setText(getMessage(MESSAGE_HASHDATALINK_TINY));
+                  } else {
+                    infoLabel.setText(getMessage(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 {
+                  String retryPattern;
+                  if (numRetries < 2) {
+                    retryPattern = getMessage(MESSAGE_LAST_RETRY);
+                  } else {
+                    retryPattern = getMessage(MESSAGE_RETRIES);
+                  }
+                  infoLabel.setText(MessageFormat.format(retryPattern, new Object[]{String.valueOf(numRetries)}));
+                  infoLabel.setFont(infoLabel.getFont().deriveFont(infoLabel.getFont().getStyle() | java.awt.Font.BOLD));
+                  infoLabel.setForeground(ERROR_COLOR);
+                  helpListener.setHelpTopic(HELP_RETRY);
+                }
+
                 JButton signButton = new JButton();
                 signButton.setFont(signButton.getFont().deriveFont(signButton.getFont().getStyle() & ~java.awt.Font.BOLD));
                 signButton.setText(getMessage(BUTTON_SIGN));
@@ -765,46 +928,14 @@ public class BKUGUIImpl implements BKUGUIFacade {
                 }
                 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));
-                  if (shortText) {
-                    infoLabel.setText(getMessage(MESSAGE_HASHDATALINK_TINY));
-                  } else {
-                    infoLabel.setText(getMessage(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 {
-                  String retryPattern;
-                  if (numRetries < 2) {
-                    retryPattern = getMessage(MESSAGE_LAST_RETRY);
-                  } else {
-                    retryPattern = getMessage(MESSAGE_RETRIES);
-                  }
-                  infoLabel.setText(MessageFormat.format(retryPattern, new Object[]{String.valueOf(numRetries)}));
-                  infoLabel.setFont(infoLabel.getFont().deriveFont(infoLabel.getFont().getStyle() | java.awt.Font.BOLD));
-                  infoLabel.setForeground(ERROR_COLOR);
-                  helpListener.setHelpTopic(HELP_RETRY);
-                }
-
                 GroupLayout mainPanelLayout = new GroupLayout(mainPanel);
                 mainPanel.setLayout(mainPanelLayout);
-                
+
                 GroupLayout.SequentialGroup infoHorizontal = mainPanelLayout.createSequentialGroup()
                         .addComponent(infoLabel);
                 GroupLayout.ParallelGroup infoVertical = mainPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
                         .addComponent(infoLabel);
-                       
+
                 if (!renderHeaderPanel) {
                   infoHorizontal
                           .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED, 0, Short.MAX_VALUE)
@@ -814,8 +945,8 @@ public class BKUGUIImpl implements BKUGUIFacade {
                 }
 
                 // align pinfield and pinsize to the right
-                GroupLayout.ParallelGroup pinHorizontal = mainPanelLayout.createParallelGroup(GroupLayout.Alignment.TRAILING);
-                GroupLayout.Group pinVertical;
+                GroupLayout.Group pinHorizontal = mainPanelLayout.createParallelGroup(GroupLayout.Alignment.TRAILING);
+                GroupLayout.SequentialGroup pinVertical = mainPanelLayout.createSequentialGroup();
 
                 if (pinLabelPos == PinLabelPosition.ABOVE) {
                   pinHorizontal
@@ -823,20 +954,25 @@ public class BKUGUIImpl implements BKUGUIFacade {
                             .addComponent(signPinLabel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                             .addComponent(pinField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                           .addComponent(pinsizeLabel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE);
-                  pinVertical = mainPanelLayout.createSequentialGroup()
+                  pinVertical
                           .addComponent(signPinLabel)
                           .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                          .addComponent(pinField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE);
-                } else {
+                          .addComponent(pinField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
+                          .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
+                          .addComponent(pinsizeLabel);
+                } else { // PinLabelPosition.LEFT
                   pinHorizontal
                           .addGroup(mainPanelLayout.createSequentialGroup()
                             .addComponent(signPinLabel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                             .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                             .addComponent(pinField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                           .addComponent(pinsizeLabel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE);
-                  pinVertical = mainPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
-                          .addComponent(signPinLabel)
-                          .addComponent(pinField);
+                  pinVertical
+                          .addGroup(mainPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
+                            .addComponent(signPinLabel)
+                            .addComponent(pinField))
+                          .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
+                          .addComponent(pinsizeLabel);
                 }
 
                 mainPanelLayout.setHorizontalGroup(
@@ -848,18 +984,14 @@ public class BKUGUIImpl implements BKUGUIFacade {
                   mainPanelLayout.createSequentialGroup()
                     .addGroup(infoVertical)
                     .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                    .addGroup(pinVertical)
-                    .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-                    .addComponent(pinsizeLabel));
+                    .addGroup(pinVertical));
 
                 GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
                 buttonPanel.setLayout(buttonPanelLayout);
 
-                GroupLayout.SequentialGroup buttonHorizontal = buttonPanelLayout.createSequentialGroup()
-                        .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-                        .addComponent(signButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE);
+                GroupLayout.SequentialGroup buttonHorizontal = buttonPanelLayout.createSequentialGroup();
                 GroupLayout.Group buttonVertical;
-                
+
                 if (renderCancelButton) {
                   JButton cancelButton = new JButton();
                   cancelButton.setFont(cancelButton.getFont().deriveFont(cancelButton.getFont().getStyle() & ~java.awt.Font.BOLD));
@@ -868,17 +1000,19 @@ public class BKUGUIImpl implements BKUGUIFacade {
                   cancelButton.addActionListener(cancelListener);
 
                   buttonHorizontal
+                          .addComponent(signButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE)
                           .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                           .addComponent(cancelButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE);
-                  
                   buttonVertical = buttonPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                           .addComponent(signButton)
-                          .addComponent(cancelButton); 
+                          .addComponent(cancelButton);
                 } else {
+                  buttonHorizontal
+                          .addComponent(signButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE);
                   buttonVertical = buttonPanelLayout.createSequentialGroup()
                           .addComponent(signButton);
                 }
-                
+
                 buttonPanelLayout.setHorizontalGroup(buttonHorizontal);
                 buttonPanelLayout.setVerticalGroup(buttonVertical);
 
@@ -951,7 +1085,7 @@ public class BKUGUIImpl implements BKUGUIFacade {
           @Override
             public void run() {
 
-                log.debug("show message dialog");
+                log.debug("show message dialog [" + Thread.currentThread().getName() + "]");
 
                 mainPanel.removeAll();
                 buttonPanel.removeAll();
@@ -1011,7 +1145,6 @@ public class BKUGUIImpl implements BKUGUIFacade {
 
                   buttonPanelLayout.setHorizontalGroup(
                     buttonPanelLayout.createSequentialGroup()
-                          .addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                           .addComponent(okButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
                   buttonPanelLayout.setVerticalGroup(
                     buttonPanelLayout.createSequentialGroup()
@@ -1084,68 +1217,69 @@ public class BKUGUIImpl implements BKUGUIFacade {
         }
         return null;
     }
+
+
+    ////////////////////////////////////////////////////////////////////////////
+    // SECURE VIEWER
+    ////////////////////////////////////////////////////////////////////////////
+
     
     /**
-     * TODO handle multiple references in HashDataViewer
      * @param signedReferences
-     * @param okListener
+     * @param backListener gets notified if pin-dialog has to be redrawn
+     * (signedRefencesList returns via BACK button)
      * @param okCommand
      */
     @Override
-    public void showSecureViewer(final List<HashDataInput> signedReferences,
-            final ActionListener okListener, 
-            final String okCommand) {
-      
-      if (signedReferences == null) {
-        showErrorDialog(getMessage(ERR_NO_HASHDATA), new Object[] {"No SignedReferences provided"}, okListener, okCommand);
-        return;
-      }
+    public void showSecureViewer(final List<HashDataInput> dataToBeSigned,
+            final ActionListener backListener, final String backCommand) {
       
-      if (signedReferences.size() == 1) {
+      if (dataToBeSigned == null) {
+        showErrorDialog(getMessage(ERR_NO_HASHDATA),
+                new Object[] {"no signature data provided"},
+                backListener, backCommand);
+      } else if (dataToBeSigned.size() == 1) {
         try {
-          log.debug("scheduling hashdata viewer");
+          log.debug("scheduling secure viewer");
 
-          SwingUtilities.invokeAndWait(new Runnable() {
+          SwingUtilities.invokeLater(new Runnable() {
 
             @Override
             public void run() {
-              ActionListener saveHashDataListener = new ActionListener() {
-
-                @Override
-                public void actionPerformed(ActionEvent e) {
-                  HashDataInput hdi = signedReferences.get(0);
-                  showSaveHashDataInputDialog(Collections.singletonList(hdi), okListener, okCommand);
-                }
-              };
-              showHashDataViewer(signedReferences.get(0), saveHashDataListener, "save");
+              showSecureViewer(dataToBeSigned.get(0)); 
             }
           });
        
-        } catch (InterruptedException ex) {
-          log.error("Failed to display HashDataViewer: " + ex.getMessage());
-        } catch (InvocationTargetException ex) {
-          log.error("Failed to display HashDataViewer: " + ex.getMessage());
+        } catch (Exception ex) { //InterruptedException InvocationTargetException
+          log.error("Failed to display secure viewer: " + ex.getMessage());
+          log.trace(ex);
+          showErrorDialog(ERR_UNKNOWN, null, backListener, backCommand);
         }
       } else {
-        showSignedReferencesListDialog(signedReferences, okListener, okCommand);
+        showSignedReferencesListDialog(dataToBeSigned, backListener, backCommand);
       }
     }
     
     /**
      * has to be called from event dispatcher thread
+     * This method blocks until the dialog's close button is pressed.
      * @param hashDataText
      * @param saveListener
      * @param saveCommand
      */
-    private void showHashDataViewer(final HashDataInput hashDataInput, final ActionListener saveListener, final String saveCommand) {
+    private void showSecureViewer(HashDataInput dataToBeSigned) {
       
-      log.debug("show hashdata viewer");
-
-      ActionListener l = helpListener.getActionListener();
-      HashDataViewer.showHashDataInput(contentPane, hashDataInput, messages, saveListener, saveCommand, l);
+      log.debug("show secure viewer [" + Thread.currentThread().getName() + "]");
+      if (secureViewer == null) {
+        secureViewer = new SecureViewerDialog(null, messages,
+                helpListener.getActionListener());
+      }
+      secureViewer.setContent(dataToBeSigned);
+      log.trace("show secure viewer returned");
     }
     
-    private void showSignedReferencesListDialog(final List<HashDataInput> signedReferences, final ActionListener backListener, final String backCommand) {
+    private void showSignedReferencesListDialog(final List<HashDataInput> signedReferences,
+            final ActionListener backListener, final String backCommand) {
       
       log.debug("scheduling signed references list dialog");
       
@@ -1154,7 +1288,7 @@ public class BKUGUIImpl implements BKUGUIFacade {
         @Override
         public void run() {
           
-          log.debug("show signed references list dialog");
+          log.debug("show signed references list dialog [" + Thread.currentThread().getName() + "]");
           
           mainPanel.removeAll();
           buttonPanel.removeAll();
@@ -1202,13 +1336,7 @@ public class BKUGUIImpl implements BKUGUIFacade {
                   int selectionIdx = lsm.getMinSelectionIndex();
                   if (selectionIdx >= 0) {
                     final HashDataInput selection = signedReferences.get(selectionIdx);
-                    showHashDataViewer(selection, new ActionListener() {
-
-                      @Override
-                      public void actionPerformed(ActionEvent e) {
-                        showSaveHashDataInputDialog(Collections.singletonList(selection), null, null);
-                      }
-                    }, "save");
+                    showSecureViewer(selection);
                   }
                 }
               });
@@ -1255,9 +1383,8 @@ public class BKUGUIImpl implements BKUGUIFacade {
           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.createParallelGroup(GroupLayout.Alignment.BASELINE)
+          buttonPanelLayout.setVerticalGroup(buttonPanelLayout.createSequentialGroup()
                   .addComponent(backButton));
 
           contentPanel.validate();
@@ -1266,96 +1393,101 @@ public class BKUGUIImpl implements BKUGUIFacade {
     }
     
     /**
-     * 
-     * @param signedRefs
      * @param okListener may be null
-     * @param okCommand
      */
-    private void showSaveHashDataInputDialog(final List<HashDataInput> signedRefs, final ActionListener okListener, final String okCommand) {
-      
-      log.debug("scheduling save hashdatainput dialog");
-      
-      SwingUtilities.invokeLater(new Runnable() {
+//    private void showSaveDialog(final List<HashDataInput> signedRefs,
+//            final ActionListener okListener, final String okCommand) {
+//
+//      log.debug("scheduling save dialog");
+//
+//      SwingUtilities.invokeLater(new Runnable() {
+//
+//        @Override
+//        public void run() {
+//
+//          log.debug("show save 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(getMessage(WINDOWTITLE_SAVE));
+//            fileDialog.setFileSelectionMode(JFileChooser.FILES_ONLY);
+//            String mimeType = signedRefs.get(0).getMimeType();
+//            MimeFilter mimeFilter = new MimeFilter(mimeType, messages);
+//            fileDialog.setFileFilter(mimeFilter);
+//            String filename = getMessage(SAVE_HASHDATAINPUT_PREFIX) + MimeFilter.getExtension(mimeType);
+//            fileDialog.setSelectedFile(new File(userHome, filename));
+//          } else {
+//            fileDialog.setDialogTitle(getMessage(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 = getMessage(SAVE_HASHDATAINPUT_PREFIX) + '_' + id + MimeFilter.getExtension(mimeType);
+//                  file = new File(f, filename);
+//                } else {
+//                  file = f;
+//                }
+//                if (file.exists()) {
+//                  String ovrwrt = getMessage(MESSAGE_OVERWRITE);
+//                  int overwrite = JOptionPane.showConfirmDialog(fileDialog, MessageFormat.format(ovrwrt, file), getMessage(WINDOWTITLE_OVERWRITE), JOptionPane.OK_CANCEL_OPTION);
+//                  if (overwrite != JOptionPane.OK_OPTION) {
+//                    continue;
+//                  }
+//                }
+//                if (log.isDebugEnabled()) {
+//                    log.debug("writing hashdata input " + 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 " + file + ": " + ex.getMessage());
+//                    showErrorDialog(ERR_WRITE_HASHDATA, new Object[] {ex.getMessage()}, null, null);
+//                    ex.printStackTrace();
+//                } finally {
+//                    try {
+//                        fos.close();
+//                    } catch (IOException ex) {
+//                    }
+//                }
+//              }
+//              break;
+//            case JFileChooser.CANCEL_OPTION :
+//              log.debug("cancelled save dialog");
+//              break;
+//          }
+//          if (okListener != null) {
+//            okListener.actionPerformed(new ActionEvent(fileDialog, ActionEvent.ACTION_PERFORMED, okCommand));
+//          }
+//        }
+//      });
+//    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    // UTILITY METHODS
+    ////////////////////////////////////////////////////////////////////////////
 
-        @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(getMessage(WINDOWTITLE_SAVE));
-            fileDialog.setFileSelectionMode(JFileChooser.FILES_ONLY);
-            String mimeType = signedRefs.get(0).getMimeType();
-            MimeFilter mimeFilter = new MimeFilter(mimeType, messages);
-            fileDialog.setFileFilter(mimeFilter);
-            String filename = getMessage(SAVE_HASHDATAINPUT_PREFIX) + MimeFilter.getExtension(mimeType);
-            fileDialog.setSelectedFile(new File(userHome, filename));
-          } else {
-            fileDialog.setDialogTitle(getMessage(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 = getMessage(SAVE_HASHDATAINPUT_PREFIX) + '_' + id + MimeFilter.getExtension(mimeType);
-                  file = new File(f, filename);
-                } else {
-                  file = f;
-                }
-                if (file.exists()) {
-                  String ovrwrt = getMessage(MESSAGE_OVERWRITE);
-                  int overwrite = JOptionPane.showConfirmDialog(fileDialog, MessageFormat.format(ovrwrt, file), getMessage(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");
-          if (okListener != null) {
-            okListener.actionPerformed(new ActionEvent(fileDialog, ActionEvent.ACTION_PERFORMED, okCommand));
-          }
-        }
-      });
-    }
-    
     private void registerHelpListener(ActionListener helpListener) {
       if (helpListener != null) {
         this.helpListener = new HelpMouseListener(helpListener);
@@ -1371,6 +1503,11 @@ public class BKUGUIImpl implements BKUGUIFacade {
       }
     }
 
+
+    ////////////////////////////////////////////////////////////////////////////
+    // INITIALIZERS (MAY BE OVERRIDDEN BY SUBCLASSES)
+    ////////////////////////////////////////////////////////////////////////////
+
     /**
      * Called from constructor.
      * Subclasses may override this method to ensure the message bundle is loaded
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
deleted file mode 100644
index 6c097b2a..00000000
--- a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataViewer.java
+++ /dev/null
@@ -1,293 +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.bku.gui.html.RestrictedHTMLEditorKit;
-import at.gv.egiz.stal.HashDataInput;
-import java.awt.Component;
-import java.awt.Container;
-import java.awt.Cursor;
-import java.awt.Dimension;
-import java.awt.Font;
-import java.awt.Frame;
-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.InputStreamReader;
-import java.io.Reader;
-import java.nio.charset.Charset;
-import java.text.MessageFormat;
-import java.util.ResourceBundle;
-import javax.swing.GroupLayout;
-import javax.swing.ImageIcon;
-import javax.swing.JButton;
-import javax.swing.JDialog;
-import javax.swing.JEditorPane;
-import javax.swing.JLabel;
-import javax.swing.JOptionPane;
-import javax.swing.JPanel;
-import javax.swing.JScrollPane;
-import javax.swing.LayoutStyle;
-import javax.swing.text.Document;
-import javax.swing.text.EditorKit;
-import javax.swing.text.StyledEditorKit;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-
-/**
- *
- * @author Clemens Orthacker <clemens.orthacker@iaik.tugraz.at>
- */
-public class HashDataViewer extends JDialog
-        implements ActionListener {
-
-  public static final String PLAINTEXT_FONT = "Monospaced";
-  protected static final Log log = LogFactory.getLog(HashDataViewer.class);
-
-  private static HashDataViewer dialog;
-  
-  protected ResourceBundle messages;
-  
-  /**
-   * 
-   * @param signedReferences currently, only one hashdata input (the first in the list) is displayed
-   */
-  public static void showHashDataInput(HashDataInput hashDataInput,
-          ResourceBundle messages,
-          ActionListener saveListener,
-          String saveCommand,
-          ActionListener helpListener) {
-    showHashDataInput(null, hashDataInput, messages, saveListener, saveCommand, helpListener);
-  }
-  
-  /**
-   * 
-   * @param frameComp owner
-   */
-  public static void showHashDataInput(Component frameComp,
-          HashDataInput hashDataInput,
-          ResourceBundle messages,
-          ActionListener saveListener,
-          String saveCommand,
-          ActionListener helpListener) {
-    
-    Frame frame = null;
-    if (frameComp != null) {
-      JOptionPane.getFrameForComponent(frameComp);
-    }
-    dialog = new HashDataViewer(frame, 
-            messages,
-            hashDataInput, 
-            saveListener, 
-            saveCommand, 
-            helpListener);
-    dialog.setVisible(true);
-  }
-
-  private HashDataViewer(Frame frame,
-          ResourceBundle messages,
-          HashDataInput hashDataInput,
-          ActionListener saveListener,
-          String saveCommand,
-          ActionListener helpListener) {
-    super(frame, messages.getString(BKUGUIFacade.WINDOWTITLE_VIEWER), true);
-    this.messages = messages;
-
-    Charset cs;
-    if (hashDataInput.getEncoding() == null) {
-      cs = Charset.forName("UTF-8");
-    } else {
-      try {
-        cs = Charset.forName(hashDataInput.getEncoding());
-      } catch (Exception ex) {
-        log.debug("charset " + hashDataInput.getEncoding() + " not supported, assuming UTF-8: " + ex.getMessage());
-        cs = Charset.forName("UTF-8");
-      }  
-    }
-    
-    
-    InputStreamReader isr = new InputStreamReader(hashDataInput.getHashDataInput(), cs);
-    Reader content = new BufferedReader(isr);
-  
-    JPanel hashDataPanel = createViewerPanel(content, 
-            hashDataInput.getMimeType(), 
-            helpListener);
-    JPanel buttonPanel = createButtonPanel(saveListener, saveCommand);
-    initContentPane(new Dimension(600, 400), hashDataPanel, buttonPanel);
-
-    pack();
-    if (frame != null) {
-      setLocationRelativeTo(frame);
-    } else {
-      setLocationByPlatform(true);
-    }
-  }
-
-  private void initContentPane(Dimension preferredSize, JPanel viewerPanel, JPanel buttonPanel) {
-    Container contentPane = getContentPane();
-    contentPane.setPreferredSize(preferredSize);
-
-    GroupLayout mainLayout = new GroupLayout(contentPane);
-    contentPane.setLayout(mainLayout);
-
-    mainLayout.setHorizontalGroup(
-            mainLayout.createSequentialGroup().addContainerGap().addGroup(
-            mainLayout.createParallelGroup(GroupLayout.Alignment.LEADING).addComponent(viewerPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(buttonPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)).addContainerGap());
-    mainLayout.setVerticalGroup(
-            mainLayout.createSequentialGroup()
-              .addContainerGap()
-              .addComponent(viewerPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
-              .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
-              .addComponent(buttonPanel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
-              .addContainerGap());
-  }
-
-  /**
-   * 
-   * @param messages
-   * @param content
-   * @param mimeType defaults to text/plain if null 
-   * @param encoding must be null if document contains charset declaration (e.g. HTML page), otherwise the parser crashes
-   * @param helpListener may be null
-   * @return
-   */
-  private JPanel createViewerPanel(Reader content, 
-          String mimeType, 
-          final ActionListener helpListener) {
-
-    if (mimeType == null) {
-      mimeType = "text/plain";
-    }
-    log.debug("viewer dialog: " + mimeType);
-
-    JEditorPane viewer = new JEditorPane();
-    viewer.setEditable(false);
-    viewer.setContentType(mimeType);
-    
-    if ("text/plain".equals(mimeType)) {
-      viewer.setEditorKit(new StyledEditorKit());
-      viewer.setFont(new Font(PLAINTEXT_FONT, viewer.getFont().getStyle(), viewer.getFont().getSize()));
-//    } else if ("text/html".equals(mimeType)) {
-//      viewer.setEditorKit(new RestrictedHTMLEditorKit());
-    } else if ("application/xhtml+xml".equals(mimeType)) {
-      viewer.setContentType("text/html");
-    }
-    
-    EditorKit editorKit = viewer.getEditorKit();
-    Document document = editorKit.createDefaultDocument();
-//    document.putProperty("IgnoreCharsetDirective", new Boolean(true));
-    
-    try {
-        viewer.read(content, document);
-        content.close();
-    } catch (Exception ex) {
-      log.error(ex.getMessage(), ex);
-      String p = messages.getString(BKUGUIFacade.ERR_VIEWER);
-      viewer.setText(MessageFormat.format(p, ex.getMessage()));
-    }
-
-    JScrollPane scrollPane = new JScrollPane(viewer);
-    scrollPane.setPreferredSize(viewer.getPreferredSize());
-    scrollPane.setAlignmentX(LEFT_ALIGNMENT);
-    viewer.setCaretPosition(0);
-
-    JPanel viewerPanel = new JPanel();
-    GroupLayout viewerPanelLayout = new GroupLayout(viewerPanel);
-    viewerPanel.setLayout(viewerPanelLayout);
-
-    GroupLayout.SequentialGroup infoHorizontal = viewerPanelLayout.createSequentialGroup();
-    GroupLayout.ParallelGroup infoVertical = viewerPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING);
-
-    if ("application/xhtml+xml".equals(mimeType)) {
-      JLabel viewerLabel = new JLabel();
-      viewerLabel.setText(messages.getString(BKUGUIFacade.WARNING_XHTML));
-      viewerLabel.setFont(viewerLabel.getFont().deriveFont(viewerLabel.getFont().getStyle() | java.awt.Font.BOLD));
-      viewerLabel.setLabelFor(viewer);
-
-      infoHorizontal.addComponent(viewerLabel);
-      infoVertical.addComponent(viewerLabel);
-    }
-
-    if (helpListener != null) {
-      JLabel helpLabel = new JLabel();
-      helpLabel.setIcon(new ImageIcon(getClass().getResource(BKUGUIFacade.HELP_IMG)));
-      helpLabel.getAccessibleContext().setAccessibleName(messages.getString(BKUGUIFacade.ALT_HELP));
-      helpLabel.addMouseListener(new MouseAdapter() {
-
-        @Override
-        public void mouseClicked(MouseEvent arg0) {
-            ActionEvent e = new ActionEvent(this, ActionEvent.ACTION_PERFORMED, BKUGUIFacade.HELP_HASHDATAVIEWER);
-            helpListener.actionPerformed(e);
-        }
-      });
-      helpLabel.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
-
-      infoHorizontal
-              .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED, 0, Short.MAX_VALUE)
-              .addComponent(helpLabel);
-      infoVertical
-              .addComponent(helpLabel);
-    }
-
-    viewerPanelLayout.setHorizontalGroup(
-          viewerPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
-            .addGroup(infoHorizontal)
-            .addComponent(scrollPane));
-    viewerPanelLayout.setVerticalGroup(
-          viewerPanelLayout.createSequentialGroup()
-            .addGroup(infoVertical)
-            .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
-            .addComponent(scrollPane));
-
-    
-    return viewerPanel;
-  }
-  
-  private JPanel createButtonPanel(ActionListener saveListener, String saveCommand) {
-    JButton closeButton = new JButton();
-    closeButton.setText(messages.getString(BKUGUIFacade.BUTTON_CLOSE));
-    closeButton.addActionListener(this);
-
-    JButton saveButton = new JButton();
-    saveButton.setText(messages.getString(BKUGUIFacade.BUTTON_SAVE));
-    saveButton.setActionCommand(saveCommand);
-    saveButton.addActionListener(saveListener);
-
-    int buttonSize = closeButton.getPreferredSize().width;
-    if (saveButton.getPreferredSize().width > buttonSize) {
-      buttonSize = saveButton.getPreferredSize().width;
-    }
-
-    JPanel buttonPanel = new JPanel();
-    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(closeButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
-    buttonPanelLayout.setVerticalGroup(
-            buttonPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE).addComponent(saveButton).addComponent(closeButton));
-
-    return buttonPanel;
-  }
-
-  @Override
-  public void actionPerformed(ActionEvent e) {
-    HashDataViewer.dialog.setVisible(false);
-  }
-}
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/SecureViewerDialog.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/SecureViewerDialog.java
new file mode 100644
index 00000000..6a16306b
--- /dev/null
+++ b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/SecureViewerDialog.java
@@ -0,0 +1,371 @@
+/*
+ * 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.Container;
+import java.awt.Cursor;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.Frame;
+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.BufferedReader;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.nio.charset.Charset;
+import java.text.MessageFormat;
+import java.util.ResourceBundle;
+import javax.swing.GroupLayout;
+import javax.swing.ImageIcon;
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JEditorPane;
+import javax.swing.JFileChooser;
+import javax.swing.JLabel;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.LayoutStyle;
+import javax.swing.SwingUtilities;
+import javax.swing.text.Document;
+import javax.swing.text.EditorKit;
+import javax.swing.text.StyledEditorKit;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ *
+ * @author Clemens Orthacker <clemens.orthacker@iaik.tugraz.at>
+ */
+public class SecureViewerDialog extends JDialog implements ActionListener {
+
+  public static final String PLAINTEXT_FONT = "Monospaced";
+  public static final Dimension VIEWER_DIMENSION = new Dimension(600, 400);
+  protected static final Log log = LogFactory.getLog(SecureViewerDialog.class);
+
+//  private static SecureViewerDialog dialog;
+  protected ResourceBundle messages;
+  protected JEditorPane viewer;
+  protected JLabel viewerLabel;
+  protected JScrollPane scrollPane;
+  protected HashDataInput content; //remember for save dialog
+
+  /**
+   * Create and display a modal SecureViewer dialog.
+   * This method blocks until the dialog's close button is pressed.
+   * 
+   * @param owner, dialog is positioned relative to its owner
+   * (if null, at default location of native windowing system)
+   */
+//  public static void showDataToBeSigned(HashDataInput dataToBeSigned,
+//          ResourceBundle messages,
+//          ActionListener saveListener, String saveCommand,
+//          ActionListener helpListener) {
+//
+////      Frame ownerFrame = (owner != null) ?
+////        JOptionPane.getFrameForComponent(owner) :
+////        null;
+//    dialog = new SecureViewerDialog(null, messages,
+//            saveListener, saveCommand, helpListener);
+//    dialog.setContent(dataToBeSigned);
+//    dialog.setVisible(true);
+//  }
+  public SecureViewerDialog(Frame owner, ResourceBundle messages,
+//          ActionListener saveListener, String saveCommand,
+          ActionListener helpListener) {
+    super(owner, messages.getString(BKUGUIFacade.WINDOWTITLE_VIEWER), true);
+    this.messages = messages;
+
+    initContentPane(VIEWER_DIMENSION,
+            createViewerPanel(helpListener),
+            createButtonPanel()); //saveListener, saveCommand));
+
+    pack();
+    if (owner != null) {
+      setLocationRelativeTo(owner);
+    } else {
+      setLocationByPlatform(true);
+    }
+  }
+
+  private void initContentPane(Dimension preferredSize,
+          JPanel viewerPanel, JPanel buttonPanel) {
+    Container contentPane = getContentPane();
+    contentPane.setPreferredSize(preferredSize);
+
+    GroupLayout mainLayout = new GroupLayout(contentPane);
+    contentPane.setLayout(mainLayout);
+
+    mainLayout.setHorizontalGroup(
+            mainLayout.createSequentialGroup().addContainerGap().addGroup(
+            mainLayout.createParallelGroup(GroupLayout.Alignment.LEADING).addComponent(viewerPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(buttonPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)).addContainerGap());
+    mainLayout.setVerticalGroup(
+            mainLayout.createSequentialGroup().addContainerGap().addComponent(viewerPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED).addComponent(buttonPanel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addContainerGap());
+  }
+
+  /**
+   * @param helpListener may be null
+   */
+  private JPanel createViewerPanel(final ActionListener helpListener) {
+    viewer = new JEditorPane();
+    viewer.setEditable(false);
+
+    scrollPane = new JScrollPane();
+
+    JPanel viewerPanel = new JPanel();
+    GroupLayout viewerPanelLayout = new GroupLayout(viewerPanel);
+    viewerPanel.setLayout(viewerPanelLayout);
+
+    GroupLayout.SequentialGroup infoHorizontal = viewerPanelLayout.createSequentialGroup();
+    GroupLayout.ParallelGroup infoVertical = viewerPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING);
+
+    viewerLabel = new JLabel();
+    viewerLabel.setFont(viewerLabel.getFont().deriveFont(viewerLabel.getFont().getStyle() | java.awt.Font.BOLD));
+//    viewerLabel.setLabelFor(viewer);
+
+    infoHorizontal.addComponent(viewerLabel);
+    infoVertical.addComponent(viewerLabel);
+
+    if (helpListener != null) {
+      JLabel helpLabel = new JLabel();
+      helpLabel.setIcon(new ImageIcon(getClass().getResource(BKUGUIFacade.HELP_IMG)));
+      helpLabel.getAccessibleContext().setAccessibleName(messages.getString(BKUGUIFacade.ALT_HELP));
+      helpLabel.addMouseListener(new MouseAdapter() {
+
+        @Override
+        public void mouseClicked(MouseEvent arg0) {
+          ActionEvent e = new ActionEvent(this, ActionEvent.ACTION_PERFORMED, BKUGUIFacade.HELP_HASHDATAVIEWER);
+          helpListener.actionPerformed(e);
+        }
+      });
+      helpLabel.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
+
+      infoHorizontal.addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED, 0, Short.MAX_VALUE).addComponent(helpLabel);
+      infoVertical.addComponent(helpLabel);
+    }
+
+    viewerPanelLayout.setHorizontalGroup(
+            viewerPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(infoHorizontal).addComponent(scrollPane));
+    viewerPanelLayout.setVerticalGroup(
+            viewerPanelLayout.createSequentialGroup().addGroup(infoVertical).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(scrollPane));
+
+    return viewerPanel;
+  }
+
+  /**
+   * Sets the hashdataInput to be displayed and makes the dialog visible.
+   * This method blocks until the dialog's close button is pressed.
+   * 
+   * @param mimeType defaults to text/plain if null
+   * @param encoding must be null if document contains charset declaration (e.g. HTML page), otherwise the parser crashes
+
+   * @param hashDataInput
+   */
+  public void setContent(HashDataInput hashDataInput) {
+
+    this.content = null;
+
+    String mimeType = hashDataInput.getMimeType();
+    if (mimeType == null) {
+      mimeType = "text/plain";
+    }
+    log.debug("secure viewer mime type: " + mimeType);
+    // loads editorkit for text/plain if unrecognized
+    viewer.setContentType(mimeType);
+
+    if ("text/plain".equals(mimeType)) {
+      viewer.setEditorKit(new StyledEditorKit());
+      viewer.setFont(new Font(PLAINTEXT_FONT, viewer.getFont().getStyle(), viewer.getFont().getSize()));
+//    } else if ("text/html".equals(mimeType)) {
+//      viewer.setEditorKit(new RestrictedHTMLEditorKit());
+    } else if ("application/xhtml+xml".equals(mimeType)) {
+      viewer.setContentType("text/html");
+    }
+
+    EditorKit editorKit = viewer.getEditorKit();
+    Document document = editorKit.createDefaultDocument();
+//    document.putProperty("IgnoreCharsetDirective", new Boolean(true));
+
+    try {
+      Charset cs = (hashDataInput.getEncoding() == null) ? Charset.forName("UTF-8") : Charset.forName(hashDataInput.getEncoding());
+      log.debug("secure viewer encoding: " + cs.toString());
+
+      InputStreamReader isr = new InputStreamReader(hashDataInput.getHashDataInput(), cs);
+      Reader contentReader = new BufferedReader(isr);
+      viewer.read(contentReader, document);
+      contentReader.close();
+
+      this.content = hashDataInput;
+
+//    } catch (IllegalCharsetNameException ex) {
+//    } catch (UnsupportedCharsetException ex) {
+    } catch (Exception ex) {
+      log.error(ex.getMessage(), ex);
+      String p = messages.getString(BKUGUIFacade.ERR_VIEWER);
+      viewer.setText(MessageFormat.format(p, ex.getMessage()));
+    }
+    viewer.setCaretPosition(0);
+
+    scrollPane.setViewportView(viewer);
+    scrollPane.setPreferredSize(viewer.getPreferredSize());
+    scrollPane.setAlignmentX(LEFT_ALIGNMENT);
+
+    if ("application/xhtml+xml".equals(mimeType)) {
+      viewerLabel.setText(messages.getString(BKUGUIFacade.WARNING_XHTML));
+    } else {
+      viewerLabel.setText("");
+    }
+
+    setVisible(true);
+  }
+
+  private JPanel createButtonPanel() { //ActionListener saveListener, String saveCommand) {
+    JButton closeButton = new JButton();
+    closeButton.setText(messages.getString(BKUGUIFacade.BUTTON_CLOSE));
+    closeButton.setActionCommand("close");
+    closeButton.addActionListener(this);
+    
+    JButton saveButton = new JButton();
+    saveButton.setText(messages.getString(BKUGUIFacade.BUTTON_SAVE));
+    saveButton.setActionCommand("save");
+    saveButton.addActionListener(this);
+
+    int buttonSize = closeButton.getPreferredSize().width;
+    if (saveButton.getPreferredSize().width > buttonSize) {
+      buttonSize = saveButton.getPreferredSize().width;
+    }
+
+    JPanel buttonPanel = new JPanel();
+    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(closeButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
+    buttonPanelLayout.setVerticalGroup(
+            buttonPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE).addComponent(saveButton).addComponent(closeButton));
+
+    return buttonPanel;
+  }
+
+  @Override
+  public void actionPerformed(ActionEvent e) {
+    if ("close".equals(e.getActionCommand())) {
+//    SecureViewerDialog.dialog.setVisible(false);
+      log.trace("closing secure viewer");
+      setVisible(false);
+      log.trace("secure viewer closed");
+    } else if ("save".equals(e.getActionCommand())) {
+      log.trace("display secure viewer save dialog");
+      showSaveDialog(content, null, null);
+      log.trace("done secure viewer save");
+    } else {
+      log.warn("unknown action command " + e.getActionCommand());
+    }
+  }
+
+  private void showSaveDialog(final HashDataInput hashDataInput,
+          final ActionListener okListener, final String okCommand) {
+
+    log.debug("scheduling save dialog [" + Thread.currentThread().getName() + "]");
+
+    SwingUtilities.invokeLater(new Runnable() {
+
+      @Override
+      public void run() {
+
+        log.debug("show save dialog [" + Thread.currentThread().getName() + "]");
+
+        String userHome = System.getProperty("user.home");
+
+        JFileChooser fileDialog = new JFileChooser(userHome);
+        fileDialog.setMultiSelectionEnabled(false);
+        fileDialog.setDialogType(JFileChooser.SAVE_DIALOG);
+        fileDialog.setFileHidingEnabled(true);
+        fileDialog.setDialogTitle(messages.getString(BKUGUIFacade.WINDOWTITLE_SAVE));
+        fileDialog.setFileSelectionMode(JFileChooser.FILES_ONLY);
+        String mimeType = hashDataInput.getMimeType();
+        MimeFilter mimeFilter = new MimeFilter(mimeType, messages);
+        fileDialog.setFileFilter(mimeFilter);
+        String filename = messages.getString(BKUGUIFacade.SAVE_HASHDATAINPUT_PREFIX) +
+                MimeFilter.getExtension(mimeType);
+        fileDialog.setSelectedFile(new File(userHome, filename));
+
+        //parent contentPane -> placed over applet
+        switch (fileDialog.showSaveDialog(fileDialog)) {
+          case JFileChooser.APPROVE_OPTION:
+            File file = fileDialog.getSelectedFile();
+            String id = hashDataInput.getReferenceId();
+            if (file.exists()) {
+              String msgPattern = messages.getString(BKUGUIFacade.MESSAGE_OVERWRITE);
+              int overwrite = JOptionPane.showConfirmDialog(fileDialog,
+                      MessageFormat.format(msgPattern, file),
+                      messages.getString(BKUGUIFacade.WINDOWTITLE_OVERWRITE),
+                      JOptionPane.OK_CANCEL_OPTION);
+              if (overwrite != JOptionPane.OK_OPTION) {
+                return;
+              }
+            }
+            if (log.isDebugEnabled()) {
+              log.debug("writing hashdata input " + 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 " + file + ": " + ex.getMessage());
+              log.debug(ex);
+              String errPattern = messages.getString(BKUGUIFacade.ERR_WRITE_HASHDATA);
+              JOptionPane.showMessageDialog(fileDialog,
+                      MessageFormat.format(errPattern, ex.getMessage()),
+                      messages.getString(BKUGUIFacade.WINDOWTITLE_ERROR),
+                      JOptionPane.ERROR_MESSAGE);
+            } finally {
+              try {
+                if (fos != null) {
+                  fos.close();
+                }
+              } catch (IOException ex) {
+              }
+            }
+            break;
+          case JFileChooser.CANCEL_OPTION:
+            log.debug("cancelled save dialog");
+            break;
+        }
+        if (okListener != null) {
+          okListener.actionPerformed(new ActionEvent(fileDialog, ActionEvent.ACTION_PERFORMED, okCommand));
+        }
+      }
+    });
+  }
+}