JAL-3741 http to https (and jar to jvp for exampleFile defaults!)
[jalview.git] / src / jalview / gui / Preferences.java
index bdc83e5..f51bfbf 100755 (executable)
@@ -1,6 +1,6 @@
 /*
- * Jalview - A Sequence Alignment Editor and Viewer (Version 2.8.2)
- * Copyright (C) 2014 The Jalview Authors
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
  * 
  * This file is part of Jalview.
  * 
@@ -23,33 +23,55 @@ package jalview.gui;
 import jalview.analysis.AnnotationSorter.SequenceAnnotationOrder;
 import jalview.bin.Cache;
 import jalview.gui.Help.HelpId;
-import jalview.gui.StructureViewer.Viewer;
+import jalview.gui.StructureViewer.ViewerType;
+import jalview.io.BackupFiles;
+import jalview.io.BackupFilesPresetEntry;
+import jalview.io.FileFormatI;
 import jalview.io.JalviewFileChooser;
 import jalview.io.JalviewFileView;
 import jalview.jbgui.GPreferences;
 import jalview.jbgui.GSequenceLink;
-import jalview.schemes.ColourSchemeProperty;
+import jalview.schemes.ColourSchemeI;
+import jalview.schemes.ColourSchemes;
+import jalview.schemes.ResidueColourScheme;
+import jalview.urls.UrlLinkTableModel;
+import jalview.urls.api.UrlProviderFactoryI;
+import jalview.urls.api.UrlProviderI;
+import jalview.urls.desktop.DesktopUrlProviderFactory;
 import jalview.util.MessageManager;
+import jalview.util.Platform;
+import jalview.util.UrlConstants;
+import jalview.ws.sifts.SiftsSettings;
 
 import java.awt.BorderLayout;
 import java.awt.Color;
+import java.awt.Component;
 import java.awt.Dimension;
 import java.awt.Font;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.MouseEvent;
 import java.io.File;
-import java.util.Collection;
+import java.util.ArrayList;
 import java.util.List;
-import java.util.StringTokenizer;
-import java.util.Vector;
 
 import javax.help.HelpSetException;
 import javax.swing.JColorChooser;
 import javax.swing.JFileChooser;
 import javax.swing.JInternalFrame;
-import javax.swing.JOptionPane;
 import javax.swing.JPanel;
+import javax.swing.ListSelectionModel;
+import javax.swing.RowFilter;
+import javax.swing.RowSorter;
+import javax.swing.SortOrder;
+import javax.swing.event.DocumentEvent;
+import javax.swing.event.DocumentListener;
+import javax.swing.event.ListSelectionEvent;
+import javax.swing.event.ListSelectionListener;
+import javax.swing.table.TableCellRenderer;
+import javax.swing.table.TableColumn;
+import javax.swing.table.TableModel;
+import javax.swing.table.TableRowSorter;
 
 import ext.edu.ucsf.rbvi.strucviz2.StructureManager;
 
@@ -61,6 +83,15 @@ import ext.edu.ucsf.rbvi.strucviz2.StructureManager;
  */
 public class Preferences extends GPreferences
 {
+  public static final String ENABLE_SPLIT_FRAME = "ENABLE_SPLIT_FRAME";
+
+  public static final String SCALE_PROTEIN_TO_CDNA = "SCALE_PROTEIN_TO_CDNA";
+
+  public static final String DEFAULT_COLOUR = "DEFAULT_COLOUR";
+
+  public static final String DEFAULT_COLOUR_PROT = "DEFAULT_COLOUR_PROT";
+
+  public static final String DEFAULT_COLOUR_NUC = "DEFAULT_COLOUR_NUC";
 
   public static final String ADD_TEMPFACT_ANN = "ADD_TEMPFACT_ANN";
 
@@ -78,6 +109,16 @@ public class Preferences extends GPreferences
 
   public static final String SHOW_AUTOCALC_ABOVE = "SHOW_AUTOCALC_ABOVE";
 
+  public static final String SHOW_OCCUPANCY = "SHOW_OCCUPANCY";
+
+  public static final String SHOW_OV_HIDDEN_AT_START = "SHOW_OV_HIDDEN_AT_START";
+
+  public static final String USE_LEGACY_GAP = "USE_LEGACY_GAP";
+
+  public static final String GAP_COLOUR = "GAP_COLOUR";
+
+  public static final String HIDDEN_COLOUR = "HIDDEN_COLOUR";
+
   private static final int MIN_FONT_SIZE = 1;
 
   private static final int MAX_FONT_SIZE = 30;
@@ -86,7 +127,9 @@ public class Preferences extends GPreferences
    * Holds name and link separated with | character. Sequence ID must be
    * $SEQUENCE_ID$ or $SEQUENCE_ID=/.possible | chars ./=$
    */
-  public static Vector sequenceURLLinks;
+  public static UrlProviderI sequenceUrlLinks;
+
+  public static UrlLinkTableModel dataModel;
 
   /**
    * Holds name and link separated with | character. Sequence IDS and Sequences
@@ -96,63 +139,49 @@ public class Preferences extends GPreferences
    * (TODO: proper escape for using | to separate ids or sequences
    */
 
-  public static Vector groupURLLinks;
+  public static List<String> groupURLLinks;
   static
   {
-    String string = Cache
-            .getDefault(
-                    "SEQUENCE_LINKS",
-                    "EMBL-EBI Search|http://www.ebi.ac.uk/ebisearch/search.ebi?db=allebi&query=$SEQUENCE_ID$");
-    sequenceURLLinks = new Vector();
-
-    try
+    // get links selected to be in the menu (SEQUENCE_LINKS)
+    // and links entered by the user but not selected (STORED_LINKS)
+    String inMenuString = Cache.getDefault("SEQUENCE_LINKS", "");
+    String notInMenuString = Cache.getDefault("STORED_LINKS", "");
+    String defaultUrl = Cache.getDefault("DEFAULT_URL",
+            UrlConstants.DEFAULT_LABEL);
+
+    // if both links lists are empty, add the DEFAULT_URL link
+    // otherwise we assume the default link is in one of the lists
+    if (inMenuString.isEmpty() && notInMenuString.isEmpty())
     {
-      StringTokenizer st = new StringTokenizer(string, "|");
-      while (st.hasMoreElements())
-      {
-        String name = st.nextToken();
-        String url = st.nextToken();
-        // check for '|' within a regex
-        int rxstart = url.indexOf("$SEQUENCE_ID$");
-        while (rxstart == -1 && url.indexOf("/=$") == -1)
-        {
-          url = url + "|" + st.nextToken();
-        }
-        sequenceURLLinks.addElement(name + "|" + url);
-      }
-    } catch (Exception ex)
-    {
-      System.out.println(ex + "\nError parsing sequence links");
-    }
-    {
-      // upgrade old SRS link
-      int srsPos = sequenceURLLinks
-              .indexOf("SRS|http://srs.ebi.ac.uk/srsbin/cgi-bin/wgetz?-newId+(([uniprot-all:$SEQUENCE_ID$]))+-view+SwissEntry");
-      if (srsPos > -1)
-      {
-        sequenceURLLinks
-                .setElementAt(
-                        "EMBL-EBI Search|http://www.ebi.ac.uk/ebisearch/search.ebi?db=allebi&query=$SEQUENCE_ID$",
-                        srsPos);
-      }
+      inMenuString = UrlConstants.DEFAULT_STRING;
     }
+    UrlProviderFactoryI factory = new DesktopUrlProviderFactory(defaultUrl,
+            inMenuString, notInMenuString);
+    sequenceUrlLinks = factory.createUrlProvider();
+    dataModel = new UrlLinkTableModel(sequenceUrlLinks);
 
     /**
      * TODO: reformulate groupURL encoding so two or more can be stored in the
      * .properties file as '|' separated strings
      */
 
-    groupURLLinks = new Vector();
+    groupURLLinks = new ArrayList<>();
   }
 
-  Vector nameLinks, urlLinks;
-
   JInternalFrame frame;
 
-  DasSourceBrowser dasSource;
-
   private WsPreferences wsPrefs;
 
+  private OptionsParam promptEachTimeOpt = new OptionsParam(
+          MessageManager.getString("label.prompt_each_time"),
+          "Prompt each time");
+
+  private OptionsParam lineArtOpt = new OptionsParam(
+          MessageManager.getString("label.lineart"), "Lineart");
+
+  private OptionsParam textOpt = new OptionsParam(
+          MessageManager.getString("action.text"), "Text");
+
   /**
    * Creates a new Preferences object.
    */
@@ -161,15 +190,14 @@ public class Preferences extends GPreferences
     super();
     frame = new JInternalFrame();
     frame.setContentPane(this);
-    dasSource = new DasSourceBrowser();
-    dasTab.add(dasSource, BorderLayout.CENTER);
     wsPrefs = new WsPreferences();
     wsTab.add(wsPrefs, BorderLayout.CENTER);
-    int width = 500, height = 420;
-    if (new jalview.util.Platform().isAMac())
+    int width = 500, height = 450;
+    new jalview.util.Platform();
+    if (Platform.isAMac())
     {
       width = 570;
-      height = 460;
+      height = 480;
     }
 
     Desktop.addInternalFrame(frame,
@@ -190,18 +218,19 @@ public class Preferences extends GPreferences
     openoverv.setSelected(Cache.getDefault("SHOW_OVERVIEW", false));
     showUnconserved
             .setSelected(Cache.getDefault("SHOW_UNCONSERVED", false));
-    showGroupConsensus.setSelected(Cache.getDefault("SHOW_GROUP_CONSENSUS",
-            false));
-    showGroupConservation.setSelected(Cache.getDefault(
-            "SHOW_GROUP_CONSERVATION", false));
-    showConsensHistogram.setSelected(Cache.getDefault(
-            "SHOW_CONSENSUS_HISTOGRAM", true));
-    showConsensLogo.setSelected(Cache.getDefault("SHOW_CONSENSUS_LOGO",
-            false));
-    showNpTooltip.setSelected(Cache
-            .getDefault("SHOW_NPFEATS_TOOLTIP", true));
-    showDbRefTooltip.setSelected(Cache.getDefault("SHOW_DBREFS_TOOLTIP",
-            true));
+    showOccupancy.setSelected(Cache.getDefault(SHOW_OCCUPANCY, false));
+    showGroupConsensus
+            .setSelected(Cache.getDefault("SHOW_GROUP_CONSENSUS", false));
+    showGroupConservation.setSelected(
+            Cache.getDefault("SHOW_GROUP_CONSERVATION", false));
+    showConsensHistogram.setSelected(
+            Cache.getDefault("SHOW_CONSENSUS_HISTOGRAM", true));
+    showConsensLogo
+            .setSelected(Cache.getDefault("SHOW_CONSENSUS_LOGO", false));
+    showNpTooltip
+            .setSelected(Cache.getDefault("SHOW_NPFEATS_TOOLTIP", true));
+    showDbRefTooltip
+            .setSelected(Cache.getDefault("SHOW_DBREFS_TOOLTIP", true));
 
     String[] fonts = java.awt.GraphicsEnvironment
             .getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
@@ -221,10 +250,12 @@ public class Preferences extends GPreferences
 
     fontNameCB.setSelectedItem(Cache.getDefault("FONT_NAME", "SansSerif"));
     fontSizeCB.setSelectedItem(Cache.getDefault("FONT_SIZE", "10"));
-    fontStyleCB.setSelectedItem(Cache.getDefault("FONT_STYLE", Font.PLAIN
-            + ""));
+    fontStyleCB.setSelectedItem(
+            Cache.getDefault("FONT_STYLE", Font.PLAIN + ""));
 
-    smoothFont.setSelected(Cache.getDefault("ANTI_ALIAS", false));
+    smoothFont.setSelected(Cache.getDefault("ANTI_ALIAS", true));
+    scaleProteinToCdna
+            .setSelected(Cache.getDefault(SCALE_PROTEIN_TO_CDNA, false));
 
     idItalics.setSelected(Cache.getDefault("ID_ITALICS", true));
 
@@ -252,29 +283,51 @@ public class Preferences extends GPreferences
 
     sortAutocalc.addItem("Autocalculated first");
     sortAutocalc.addItem("Autocalculated last");
-    final boolean showAbove = Cache.getDefault(SHOW_AUTOCALC_ABOVE,
-            true);
+    final boolean showAbove = Cache.getDefault(SHOW_AUTOCALC_ABOVE, true);
     sortAutocalc.setSelectedItem(showAbove ? sortAutocalc.getItemAt(0)
             : sortAutocalc.getItemAt(1));
     startupCheckbox
             .setSelected(Cache.getDefault("SHOW_STARTUP_FILE", true));
     startupFileTextfield.setText(Cache.getDefault("STARTUP_FILE",
-            Cache.getDefault("www.jalview.org", "http://www.jalview.org")
-                    + "/examples/exampleFile_2_3.jar"));
+            Cache.getDefault("www.jalview.org", "https://www.jalview.org")
+                    + "/examples/exampleFile_2_7.jvp"));
 
     /*
      * Set Colours tab defaults
      */
-    for (int i = ColourSchemeProperty.FIRST_COLOUR; i <= ColourSchemeProperty.LAST_COLOUR; i++)
+    protColour.addItem(ResidueColourScheme.NONE);
+    nucColour.addItem(ResidueColourScheme.NONE);
+    for (ColourSchemeI cs : ColourSchemes.getInstance().getColourSchemes())
     {
-      colour.addItem(ColourSchemeProperty.getColourName(i));
+      String name = cs.getSchemeName();
+      protColour.addItem(name);
+      nucColour.addItem(name);
     }
-    String string = Cache.getDefault("DEFAULT_COLOUR", "None");
-    colour.setSelectedItem(string);
-    minColour.setBackground(Cache.getDefaultColour("ANNOTATIONCOLOUR_MIN",
-            Color.orange));
-    maxColour.setBackground(Cache.getDefaultColour("ANNOTATIONCOLOUR_MAX",
-            Color.red));
+    String oldProp = Cache.getDefault(DEFAULT_COLOUR,
+            ResidueColourScheme.NONE);
+    String newProp = Cache.getDefault(DEFAULT_COLOUR_PROT, null);
+    protColour.setSelectedItem(newProp != null ? newProp : oldProp);
+    newProp = Cache.getDefault(DEFAULT_COLOUR_NUC, null);
+    nucColour.setSelectedItem(newProp != null ? newProp : oldProp);
+    minColour.setBackground(
+            Cache.getDefaultColour("ANNOTATIONCOLOUR_MIN", Color.orange));
+    maxColour.setBackground(
+            Cache.getDefaultColour("ANNOTATIONCOLOUR_MAX", Color.red));
+
+    /*
+     * Set overview panel defaults
+     */
+    gapColour.setBackground(
+            Cache.getDefaultColour(GAP_COLOUR,
+                    jalview.renderer.OverviewResColourFinder.OVERVIEW_DEFAULT_GAP));
+    hiddenColour.setBackground(
+            Cache.getDefaultColour(HIDDEN_COLOUR,
+                    jalview.renderer.OverviewResColourFinder.OVERVIEW_DEFAULT_HIDDEN));
+    useLegacyGap.setSelected(Cache.getDefault(USE_LEGACY_GAP, false));
+    gapLabel.setEnabled(!useLegacyGap.isSelected());
+    gapColour.setEnabled(!useLegacyGap.isSelected());
+    showHiddenAtStart
+            .setSelected(Cache.getDefault(SHOW_OV_HIDDEN_AT_START, false));
 
     /*
      * Set Structure tab defaults.
@@ -283,13 +336,12 @@ public class Preferences extends GPreferences
     structFromPdb.setSelected(structSelected);
     useRnaView.setSelected(Cache.getDefault(USE_RNAVIEW, false));
     useRnaView.setEnabled(structSelected);
-    addSecondaryStructure
-            .setSelected(Cache.getDefault(ADD_SS_ANN, false));
+    addSecondaryStructure.setSelected(Cache.getDefault(ADD_SS_ANN, false));
     addSecondaryStructure.setEnabled(structSelected);
     addTempFactor.setSelected(Cache.getDefault(ADD_TEMPFACT_ANN, false));
     addTempFactor.setEnabled(structSelected);
-    structViewer.setSelectedItem(Cache.getDefault(STRUCTURE_DISPLAY,
-            Viewer.JMOL.name()));
+    structViewer.setSelectedItem(
+            Cache.getDefault(STRUCTURE_DISPLAY, ViewerType.JMOL.name()));
     chimeraPath.setText(Cache.getDefault(CHIMERA_PATH, ""));
     chimeraPath.addActionListener(new ActionListener()
     {
@@ -300,23 +352,143 @@ public class Preferences extends GPreferences
       }
     });
 
+    if (Cache.getDefault("MAP_WITH_SIFTS", false))
+    {
+      siftsMapping.setSelected(true);
+    }
+    else
+    {
+      nwMapping.setSelected(true);
+    }
+
+    SiftsSettings
+            .setMapWithSifts(Cache.getDefault("MAP_WITH_SIFTS", false));
+
     /*
      * Set Connections tab defaults
      */
-    nameLinks = new Vector();
-    urlLinks = new Vector();
-    for (int i = 0; i < sequenceURLLinks.size(); i++)
+
+    // set up sorting
+    linkUrlTable.setModel(dataModel);
+    final TableRowSorter<TableModel> sorter = new TableRowSorter<>(
+            linkUrlTable.getModel());
+    linkUrlTable.setRowSorter(sorter);
+    List<RowSorter.SortKey> sortKeys = new ArrayList<>();
+
+    UrlLinkTableModel m = (UrlLinkTableModel) linkUrlTable.getModel();
+    sortKeys.add(new RowSorter.SortKey(m.getPrimaryColumn(),
+            SortOrder.DESCENDING));
+    sortKeys.add(new RowSorter.SortKey(m.getSelectedColumn(),
+            SortOrder.DESCENDING));
+    sortKeys.add(
+            new RowSorter.SortKey(m.getNameColumn(), SortOrder.ASCENDING));
+
+    sorter.setSortKeys(sortKeys);
+    sorter.sort();
+
+    // set up filtering
+    ActionListener onReset;
+    onReset = new ActionListener()
     {
-      String link = sequenceURLLinks.elementAt(i).toString();
-      nameLinks.addElement(link.substring(0, link.indexOf("|")));
-      urlLinks.addElement(link.substring(link.indexOf("|") + 1));
-    }
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        filterTB.setText("");
+        sorter.setRowFilter(RowFilter.regexFilter(""));
+      }
+
+    };
+    doReset.addActionListener(onReset);
+
+    // filter to display only custom urls
+    final RowFilter<TableModel, Object> customUrlFilter = new RowFilter<TableModel, Object>()
+    {
+      @Override
+      public boolean include(
+              Entry<? extends TableModel, ? extends Object> entry)
+      {
+        return ((UrlLinkTableModel) entry.getModel()).isUserEntry(entry);
+      }
+    };
+
+    final TableRowSorter<TableModel> customSorter = new TableRowSorter<>(
+            linkUrlTable.getModel());
+    customSorter.setRowFilter(customUrlFilter);
+
+    ActionListener onCustomOnly;
+    onCustomOnly = new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        filterTB.setText("");
+        sorter.setRowFilter(customUrlFilter);
+      }
+    };
+    userOnly.addActionListener(onCustomOnly);
+
+    filterTB.getDocument().addDocumentListener(new DocumentListener()
+    {
+      String caseInsensitiveFlag = "(?i)";
+
+      @Override
+      public void changedUpdate(DocumentEvent e)
+      {
+        sorter.setRowFilter(RowFilter
+                .regexFilter(caseInsensitiveFlag + filterTB.getText()));
+      }
 
-    updateLinkData();
+      @Override
+      public void removeUpdate(DocumentEvent e)
+      {
+        sorter.setRowFilter(RowFilter
+                .regexFilter(caseInsensitiveFlag + filterTB.getText()));
+      }
+
+      @Override
+      public void insertUpdate(DocumentEvent e)
+      {
+        sorter.setRowFilter(RowFilter
+                .regexFilter(caseInsensitiveFlag + filterTB.getText()));
+      }
+    });
+
+    // set up list selection functionality
+    linkUrlTable.getSelectionModel()
+            .addListSelectionListener(new UrlListSelectionHandler());
+
+    // set up radio buttons
+    int onClickCol = ((UrlLinkTableModel) linkUrlTable.getModel())
+            .getPrimaryColumn();
+    String onClickName = linkUrlTable.getColumnName(onClickCol);
+    linkUrlTable.getColumn(onClickName)
+            .setCellRenderer(new RadioButtonRenderer());
+    linkUrlTable.getColumn(onClickName)
+            .setCellEditor(new RadioButtonEditor());
+
+    // get boolean columns and resize those to min possible
+    for (int column = 0; column < linkUrlTable.getColumnCount(); column++)
+    {
+      if (linkUrlTable.getModel().getColumnClass(column)
+              .equals(Boolean.class))
+      {
+        TableColumn tableColumn = linkUrlTable.getColumnModel()
+                .getColumn(column);
+        int preferredWidth = tableColumn.getMinWidth();
+
+        TableCellRenderer cellRenderer = linkUrlTable.getCellRenderer(0,
+                column);
+        Component c = linkUrlTable.prepareRenderer(cellRenderer, 0, column);
+        int cwidth = c.getPreferredSize().width
+                + linkUrlTable.getIntercellSpacing().width;
+        preferredWidth = Math.max(preferredWidth, cwidth);
+
+        tableColumn.setPreferredWidth(preferredWidth);
+      }
+    }
 
     useProxy.setSelected(Cache.getDefault("USE_PROXY", false));
-    proxyServerTB.setEnabled(useProxy.isSelected());
-    proxyPortTB.setEnabled(useProxy.isSelected());
+    useProxy_actionPerformed(); // make sure useProxy is correctly initialised
     proxyServerTB.setText(Cache.getDefault("PROXY_SERVER", ""));
     proxyPortTB.setText(Cache.getDefault("PROXY_PORT", ""));
 
@@ -331,17 +503,30 @@ public class Preferences extends GPreferences
     /*
      * Set Output tab defaults
      */
-    epsRendering
-            .addItem(MessageManager.getString("label.prompt_each_time"));
-    epsRendering.addItem(MessageManager.getString("label.lineart"));
-    epsRendering.addItem(MessageManager.getString("action.text"));
-    epsRendering.setSelectedItem(Cache.getDefault("EPS_RENDERING",
-            "Prompt each time"));
+    epsRendering.addItem(promptEachTimeOpt);
+    epsRendering.addItem(lineArtOpt);
+    epsRendering.addItem(textOpt);
+    String defaultEPS = Cache.getDefault("EPS_RENDERING",
+            "Prompt each time");
+    if (defaultEPS.equalsIgnoreCase("Text"))
+    {
+      epsRendering.setSelectedItem(textOpt);
+    }
+    else if (defaultEPS.equalsIgnoreCase("Lineart"))
+    {
+      epsRendering.setSelectedItem(lineArtOpt);
+    }
+    else
+    {
+      epsRendering.setSelectedItem(promptEachTimeOpt);
+    }
     autoIdWidth.setSelected(Cache.getDefault("FIGURE_AUTOIDWIDTH", false));
-    userIdWidth.setEnabled(autoIdWidth.isSelected());
-    userIdWidthlabel.setEnabled(autoIdWidth.isSelected());
-    Integer wi = Cache.getIntegerProperty("FIGURE_USERIDWIDTH");
+    userIdWidth.setEnabled(!autoIdWidth.isSelected());
+    userIdWidthlabel.setEnabled(!autoIdWidth.isSelected());
+    Integer wi = Cache.getIntegerProperty("FIGURE_FIXEDIDWIDTH");
     userIdWidth.setText(wi == null ? "" : wi.toString());
+    // TODO: refactor to use common enum via FormatAdapter and allow extension
+    // for new flat file formats
     blcjv.setSelected(Cache.getDefault("BLC_JVSUFFIX", true));
     clustaljv.setSelected(Cache.getDefault("CLUSTAL_JVSUFFIX", true));
     fastajv.setSelected(Cache.getDefault("FASTA_JVSUFFIX", true));
@@ -350,17 +535,25 @@ public class Preferences extends GPreferences
     pileupjv.setSelected(Cache.getDefault("PILEUP_JVSUFFIX", true));
     pirjv.setSelected(Cache.getDefault("PIR_JVSUFFIX", true));
     modellerOutput.setSelected(Cache.getDefault("PIR_MODELLER", false));
+    embbedBioJSON
+            .setSelected(Cache.getDefault("EXPORT_EMBBED_BIOJSON", true));
 
     /*
      * Set Editing tab defaults
      */
-    autoCalculateConsCheck.setSelected(Cache.getDefault(
-            "AUTO_CALC_CONSENSUS", true));
+    autoCalculateConsCheck
+            .setSelected(Cache.getDefault("AUTO_CALC_CONSENSUS", true));
     padGaps.setSelected(Cache.getDefault("PAD_GAPS", false));
     sortByTree.setSelected(Cache.getDefault("SORT_BY_TREE", false));
 
     annotations_actionPerformed(null); // update the display of the annotation
                                        // settings
+    
+    
+    /*
+     * Set Backups tab defaults
+     */
+    loadLastSavedBackupsOptions();
   }
 
   /**
@@ -369,6 +562,7 @@ public class Preferences extends GPreferences
    * 
    * @param e
    */
+  @Override
   public void ok_actionPerformed(ActionEvent e)
   {
     if (!validateSettings())
@@ -396,20 +590,22 @@ public class Preferences extends GPreferences
     Cache.applicationProperties.setProperty("SHOW_IDENTITY",
             Boolean.toString(identity.isSelected()));
 
-    Cache.applicationProperties.setProperty("GAP_SYMBOL", gapSymbolCB
-            .getSelectedItem().toString());
+    Cache.applicationProperties.setProperty("GAP_SYMBOL",
+            gapSymbolCB.getSelectedItem().toString());
 
-    Cache.applicationProperties.setProperty("FONT_NAME", fontNameCB
-            .getSelectedItem().toString());
-    Cache.applicationProperties.setProperty("FONT_STYLE", fontStyleCB
-            .getSelectedItem().toString());
-    Cache.applicationProperties.setProperty("FONT_SIZE", fontSizeCB
-            .getSelectedItem().toString());
+    Cache.applicationProperties.setProperty("FONT_NAME",
+            fontNameCB.getSelectedItem().toString());
+    Cache.applicationProperties.setProperty("FONT_STYLE",
+            fontStyleCB.getSelectedItem().toString());
+    Cache.applicationProperties.setProperty("FONT_SIZE",
+            fontSizeCB.getSelectedItem().toString());
 
     Cache.applicationProperties.setProperty("ID_ITALICS",
             Boolean.toString(idItalics.isSelected()));
     Cache.applicationProperties.setProperty("SHOW_UNCONSERVED",
             Boolean.toString(showUnconserved.isSelected()));
+    Cache.applicationProperties.setProperty(SHOW_OCCUPANCY,
+            Boolean.toString(showOccupancy.isSelected()));
     Cache.applicationProperties.setProperty("SHOW_GROUP_CONSENSUS",
             Boolean.toString(showGroupConsensus.isSelected()));
     Cache.applicationProperties.setProperty("SHOW_GROUP_CONSERVATION",
@@ -420,6 +616,8 @@ public class Preferences extends GPreferences
             Boolean.toString(showConsensLogo.isSelected()));
     Cache.applicationProperties.setProperty("ANTI_ALIAS",
             Boolean.toString(smoothFont.isSelected()));
+    Cache.applicationProperties.setProperty(SCALE_PROTEIN_TO_CDNA,
+            Boolean.toString(scaleProteinToCdna.isSelected()));
     Cache.applicationProperties.setProperty("SHOW_NPFEATS_TOOLTIP",
             Boolean.toString(showNpTooltip.isSelected()));
     Cache.applicationProperties.setProperty("SHOW_DBREFS_TOOLTIP",
@@ -433,8 +631,8 @@ public class Preferences extends GPreferences
     Cache.applicationProperties.setProperty("SHOW_STARTUP_FILE",
             Boolean.toString(startupCheckbox.isSelected()));
 
-    Cache.applicationProperties.setProperty("SORT_ALIGNMENT", sortby
-            .getSelectedItem().toString());
+    Cache.applicationProperties.setProperty("SORT_ALIGNMENT",
+            sortby.getSelectedItem().toString());
 
     // convert description of sort order to enum name for save
     SequenceAnnotationOrder annSortOrder = SequenceAnnotationOrder
@@ -452,14 +650,26 @@ public class Preferences extends GPreferences
     /*
      * Save Colours settings
      */
-    Cache.applicationProperties.setProperty("DEFAULT_COLOUR", colour
-            .getSelectedItem().toString());
+    Cache.applicationProperties.setProperty(DEFAULT_COLOUR_PROT,
+            protColour.getSelectedItem().toString());
+    Cache.applicationProperties.setProperty(DEFAULT_COLOUR_NUC,
+            nucColour.getSelectedItem().toString());
     Cache.setColourProperty("ANNOTATIONCOLOUR_MIN",
             minColour.getBackground());
     Cache.setColourProperty("ANNOTATIONCOLOUR_MAX",
             maxColour.getBackground());
 
     /*
+     * Save Overview settings
+     */
+    Cache.setColourProperty(GAP_COLOUR, gapColour.getBackground());
+    Cache.setColourProperty(HIDDEN_COLOUR, hiddenColour.getBackground());
+    Cache.applicationProperties.setProperty(USE_LEGACY_GAP,
+            Boolean.toString(useLegacyGap.isSelected()));
+    Cache.applicationProperties.setProperty(SHOW_OV_HIDDEN_AT_START,
+            Boolean.toString(showHiddenAtStart.isSelected()));
+
+    /*
      * Save Structure settings
      */
     Cache.applicationProperties.setProperty(ADD_TEMPFACT_ANN,
@@ -470,22 +680,18 @@ public class Preferences extends GPreferences
             Boolean.toString(useRnaView.isSelected()));
     Cache.applicationProperties.setProperty(STRUCT_FROM_PDB,
             Boolean.toString(structFromPdb.isSelected()));
-    Cache.applicationProperties.setProperty(STRUCTURE_DISPLAY, structViewer
-            .getSelectedItem().toString());
+    Cache.applicationProperties.setProperty(STRUCTURE_DISPLAY,
+            structViewer.getSelectedItem().toString());
     Cache.setOrRemove(CHIMERA_PATH, chimeraPath.getText());
+    Cache.applicationProperties.setProperty("MAP_WITH_SIFTS",
+            Boolean.toString(siftsMapping.isSelected()));
+    SiftsSettings.setMapWithSifts(siftsMapping.isSelected());
 
     /*
      * Save Output settings
      */
-    if (epsRendering.getSelectedItem().equals("Prompt each time"))
-    {
-      Cache.applicationProperties.remove("EPS_RENDERING");
-    }
-    else
-    {
-      Cache.applicationProperties.setProperty("EPS_RENDERING", epsRendering
-              .getSelectedItem().toString());
-    }
+    Cache.applicationProperties.setProperty("EPS_RENDERING",
+            ((OptionsParam) epsRendering.getSelectedItem()).getCode());
 
     /*
      * Save Connections settings
@@ -494,27 +700,32 @@ public class Preferences extends GPreferences
 
     jalview.util.BrowserLauncher.resetBrowser();
 
-    if (nameLinks.size() > 0)
+    // save user-defined and selected links
+    String menuLinks = sequenceUrlLinks.writeUrlsAsString(true);
+    if (menuLinks.isEmpty())
+    {
+      Cache.applicationProperties.remove("SEQUENCE_LINKS");
+    }
+    else
     {
-      StringBuffer links = new StringBuffer();
-      sequenceURLLinks = new Vector();
-      for (int i = 0; i < nameLinks.size(); i++)
-      {
-        sequenceURLLinks.addElement(nameLinks.elementAt(i) + "|"
-                + urlLinks.elementAt(i));
-        links.append(sequenceURLLinks.elementAt(i).toString());
-        links.append("|");
-      }
-      // remove last "|"
-      links.setLength(links.length() - 1);
       Cache.applicationProperties.setProperty("SEQUENCE_LINKS",
-              links.toString());
+              menuLinks.toString());
+    }
+
+    String nonMenuLinks = sequenceUrlLinks.writeUrlsAsString(false);
+    if (nonMenuLinks.isEmpty())
+    {
+      Cache.applicationProperties.remove("STORED_LINKS");
     }
     else
     {
-      Cache.applicationProperties.remove("SEQUENCE_LINKS");
+      Cache.applicationProperties.setProperty("STORED_LINKS",
+              nonMenuLinks.toString());
     }
 
+    Cache.applicationProperties.setProperty("DEFAULT_URL",
+            sequenceUrlLinks.getPrimaryUrlId());
+
     Cache.applicationProperties.setProperty("USE_PROXY",
             Boolean.toString(useProxy.isSelected()));
 
@@ -570,12 +781,14 @@ public class Preferences extends GPreferences
             Boolean.toString(pirjv.isSelected()));
     Cache.applicationProperties.setProperty("PIR_MODELLER",
             Boolean.toString(modellerOutput.isSelected()));
+    Cache.applicationProperties.setProperty("EXPORT_EMBBED_BIOJSON",
+            Boolean.toString(embbedBioJSON.isSelected()));
     jalview.io.PIRFile.useModellerOutput = modellerOutput.isSelected();
 
     Cache.applicationProperties.setProperty("FIGURE_AUTOIDWIDTH",
             Boolean.toString(autoIdWidth.isSelected()));
     userIdWidth_actionPerformed();
-    Cache.applicationProperties.setProperty("FIGURE_USERIDWIDTH",
+    Cache.applicationProperties.setProperty("FIGURE_FIXEDIDWIDTH",
             userIdWidth.getText());
 
     /*
@@ -588,8 +801,31 @@ public class Preferences extends GPreferences
     Cache.applicationProperties.setProperty("PAD_GAPS",
             Boolean.toString(padGaps.isSelected()));
 
-    dasSource.saveProperties(Cache.applicationProperties);
     wsPrefs.updateAndRefreshWsMenuConfig(false);
+
+    /*
+     * Save Backups settings
+     */
+    Cache.applicationProperties.setProperty(BackupFiles.ENABLED,
+            Boolean.toString(enableBackupFiles.isSelected()));
+    int preset = getComboIntStringKey(backupfilesPresetsCombo);
+    Cache.applicationProperties.setProperty(BackupFiles.NS + "_PRESET", Integer.toString(preset));
+
+    if (preset == BackupFilesPresetEntry.BACKUPFILESSCHEMECUSTOM)
+    {
+      BackupFilesPresetEntry customBFPE = getBackupfilesCurrentEntry();
+      BackupFilesPresetEntry.backupfilesPresetEntriesValues.put(
+              BackupFilesPresetEntry.BACKUPFILESSCHEMECUSTOM, customBFPE);
+      Cache.applicationProperties
+              .setProperty(BackupFilesPresetEntry.CUSTOMCONFIG,
+                      customBFPE.toString());
+    }
+
+    BackupFilesPresetEntry savedBFPE = BackupFilesPresetEntry.backupfilesPresetEntriesValues
+            .get(preset);
+    Cache.applicationProperties.setProperty(
+            BackupFilesPresetEntry.SAVEDCONFIG, savedBFPE.toString());
+
     Cache.saveProperties();
     Desktop.instance.doConfigureStructurePrefs();
     try
@@ -622,29 +858,32 @@ public class Preferences extends GPreferences
     return validateChimeraPath();
 
   }
+
   /**
    * DOCUMENT ME!
    */
+  @Override
   public void startupFileTextfield_mouseClicked()
   {
-    JalviewFileChooser chooser = new JalviewFileChooser(
-            jalview.bin.Cache.getProperty("LAST_DIRECTORY"),
-            new String[]
-            { "fa, fasta, fastq", "aln", "pfam", "msf", "pir", "blc", "jar" },
-            new String[]
-            { "Fasta", "Clustal", "PFAM", "MSF", "PIR", "BLC", "Jalview" },
-            jalview.bin.Cache.getProperty("DEFAULT_FILE_FORMAT"));
+    String fileFormat = Cache.getProperty("DEFAULT_FILE_FORMAT");
+    JalviewFileChooser chooser = JalviewFileChooser
+            .forRead(Cache.getProperty("LAST_DIRECTORY"), fileFormat);
     chooser.setFileView(new JalviewFileView());
-    chooser.setDialogTitle(MessageManager.getString("label.select_startup_file"));
+    chooser.setDialogTitle(
+            MessageManager.getString("label.select_startup_file"));
 
     int value = chooser.showOpenDialog(this);
 
     if (value == JalviewFileChooser.APPROVE_OPTION)
     {
-      jalview.bin.Cache.applicationProperties.setProperty(
-              "DEFAULT_FILE_FORMAT", chooser.getSelectedFormat());
-      startupFileTextfield.setText(chooser.getSelectedFile()
-              .getAbsolutePath());
+      FileFormatI format = chooser.getSelectedFormat();
+      if (format != null)
+      {
+        Cache.applicationProperties.setProperty("DEFAULT_FILE_FORMAT",
+                format.getName());
+      }
+      startupFileTextfield
+              .setText(chooser.getSelectedFile().getAbsolutePath());
     }
   }
 
@@ -654,6 +893,7 @@ public class Preferences extends GPreferences
    * @param e
    *          DOCUMENT ME!
    */
+  @Override
   public void cancel_actionPerformed(ActionEvent e)
   {
     try
@@ -672,11 +912,13 @@ public class Preferences extends GPreferences
    * @param e
    *          DOCUMENT ME!
    */
+  @Override
   public void annotations_actionPerformed(ActionEvent e)
   {
     conservation.setEnabled(annotations.isSelected());
     quality.setEnabled(annotations.isSelected());
     identity.setEnabled(annotations.isSelected());
+    showOccupancy.setEnabled(annotations.isSelected());
     showGroupConsensus.setEnabled(annotations.isSelected());
     showGroupConservation.setEnabled(annotations.isSelected());
     showConsensHistogram.setEnabled(annotations.isSelected()
@@ -685,23 +927,32 @@ public class Preferences extends GPreferences
             && (identity.isSelected() || showGroupConsensus.isSelected()));
   }
 
+  @Override
   public void newLink_actionPerformed(ActionEvent e)
   {
-
     GSequenceLink link = new GSequenceLink();
     boolean valid = false;
     while (!valid)
     {
-      if (JOptionPane.showInternalConfirmDialog(Desktop.desktop, link,
+      if (JvOptionPane.showInternalConfirmDialog(Desktop.desktop, link,
               MessageManager.getString("label.new_sequence_url_link"),
-              JOptionPane.OK_CANCEL_OPTION, -1, null) == JOptionPane.OK_OPTION)
+              JvOptionPane.OK_CANCEL_OPTION, -1,
+              null) == JvOptionPane.OK_OPTION)
       {
         if (link.checkValid())
         {
-          nameLinks.addElement(link.getName());
-          urlLinks.addElement(link.getURL());
-          updateLinkData();
-          valid = true;
+          if (((UrlLinkTableModel) linkUrlTable.getModel())
+                  .isUniqueName(link.getName()))
+          {
+            ((UrlLinkTableModel) linkUrlTable.getModel())
+                    .insertRow(link.getName(), link.getURL());
+            valid = true;
+          }
+          else
+          {
+            link.notifyDuplicate();
+            continue;
+          }
         }
       }
       else
@@ -711,40 +962,52 @@ public class Preferences extends GPreferences
     }
   }
 
+  @Override
   public void editLink_actionPerformed(ActionEvent e)
   {
     GSequenceLink link = new GSequenceLink();
 
-    int index = linkNameList.getSelectedIndex();
+    int index = linkUrlTable.getSelectedRow();
     if (index == -1)
     {
-      JOptionPane.showInternalMessageDialog(Desktop.desktop,
-              MessageManager.getString("label.no_link_selected"),
-              MessageManager.getString("label.no_link_selected"),
-              JOptionPane.WARNING_MESSAGE);
+      // button no longer enabled if row is not selected
+      Cache.log.debug("Edit with no row selected in linkUrlTable");
       return;
     }
 
-    link.setName(nameLinks.elementAt(index).toString());
-    link.setURL(urlLinks.elementAt(index).toString());
+    int nameCol = ((UrlLinkTableModel) linkUrlTable.getModel())
+            .getNameColumn();
+    int urlCol = ((UrlLinkTableModel) linkUrlTable.getModel())
+            .getUrlColumn();
+    String oldName = linkUrlTable.getValueAt(index, nameCol).toString();
+    link.setName(oldName);
+    link.setURL(linkUrlTable.getValueAt(index, urlCol).toString());
 
     boolean valid = false;
     while (!valid)
     {
-
-      if (JOptionPane.showInternalConfirmDialog(Desktop.desktop, link,
-              MessageManager.getString("label.new_sequence_url_link"),
-              JOptionPane.OK_CANCEL_OPTION, -1, null) == JOptionPane.OK_OPTION)
+      if (JvOptionPane.showInternalConfirmDialog(Desktop.desktop, link,
+              MessageManager.getString("label.edit_sequence_url_link"),
+              JvOptionPane.OK_CANCEL_OPTION, -1,
+              null) == JvOptionPane.OK_OPTION)
       {
         if (link.checkValid())
         {
-          nameLinks.setElementAt(link.getName(), index);
-          urlLinks.setElementAt(link.getURL(), index);
-          updateLinkData();
-          valid = true;
+          if ((oldName.equals(link.getName()))
+                  || (((UrlLinkTableModel) linkUrlTable.getModel())
+                          .isUniqueName(link.getName())))
+          {
+            linkUrlTable.setValueAt(link.getName(), index, nameCol);
+            linkUrlTable.setValueAt(link.getURL(), index, urlCol);
+            valid = true;
+          }
+          else
+          {
+            link.notifyDuplicate();
+            continue;
+          }
         }
       }
-
       else
       {
         break;
@@ -752,32 +1015,32 @@ public class Preferences extends GPreferences
     }
   }
 
+  @Override
   public void deleteLink_actionPerformed(ActionEvent e)
   {
-    int index = linkNameList.getSelectedIndex();
+    int index = linkUrlTable.getSelectedRow();
+    int modelIndex = -1;
     if (index == -1)
     {
-      JOptionPane.showInternalMessageDialog(Desktop.desktop,
-              MessageManager.getString("label.no_link_selected"),
-              MessageManager.getString("label.no_link_selected"),
-              JOptionPane.WARNING_MESSAGE);
+      // button no longer enabled if row is not selected
+      Cache.log.debug("Delete with no row selected in linkUrlTable");
       return;
     }
-    nameLinks.removeElementAt(index);
-    urlLinks.removeElementAt(index);
-    updateLinkData();
-  }
+    else
+    {
+      modelIndex = linkUrlTable.convertRowIndexToModel(index);
+    }
 
-  void updateLinkData()
-  {
-    linkNameList.setListData(nameLinks);
-    linkURLList.setListData(urlLinks);
+    // make sure we use the model index to delete, and not the table index
+    ((UrlLinkTableModel) linkUrlTable.getModel()).removeRow(modelIndex);
   }
 
+  @Override
   public void defaultBrowser_mouseClicked(MouseEvent e)
   {
     JFileChooser chooser = new JFileChooser(".");
-    chooser.setDialogTitle(MessageManager.getString("label.select_default_browser"));
+    chooser.setDialogTitle(
+            MessageManager.getString("label.select_default_browser"));
 
     int value = chooser.showOpenDialog(this);
 
@@ -795,13 +1058,14 @@ public class Preferences extends GPreferences
    * jalview.jbgui.GPreferences#showunconserved_actionPerformed(java.awt.event
    * .ActionEvent)
    */
+  @Override
   protected void showunconserved_actionPerformed(ActionEvent e)
   {
     // TODO Auto-generated method stub
     super.showunconserved_actionPerformed(e);
   }
 
-  public static Collection getGroupURLLinks()
+  public static List<String> getGroupURLLinks()
   {
     return groupURLLinks;
   }
@@ -810,7 +1074,8 @@ public class Preferences extends GPreferences
   public void minColour_actionPerformed(JPanel panel)
   {
     Color col = JColorChooser.showDialog(this,
-            MessageManager.getString("label.select_colour_minimum_value"), minColour.getBackground());
+            MessageManager.getString("label.select_colour_minimum_value"),
+            minColour.getBackground());
     if (col != null)
     {
       panel.setBackground(col);
@@ -822,7 +1087,8 @@ public class Preferences extends GPreferences
   public void maxColour_actionPerformed(JPanel panel)
   {
     Color col = JColorChooser.showDialog(this,
-            MessageManager.getString("label.select_colour_maximum_value"), maxColour.getBackground());
+            MessageManager.getString("label.select_colour_maximum_value"),
+            maxColour.getBackground());
     if (col != null)
     {
       panel.setBackground(col);
@@ -831,6 +1097,63 @@ public class Preferences extends GPreferences
   }
 
   @Override
+  public void gapColour_actionPerformed(JPanel gap)
+  {
+    if (!useLegacyGap.isSelected())
+    {
+      Color col = JColorChooser.showDialog(this,
+              MessageManager.getString("label.select_gap_colour"),
+              gapColour.getBackground());
+      if (col != null)
+      {
+        gap.setBackground(col);
+      }
+      gap.repaint();
+    }
+  }
+
+  @Override
+  public void hiddenColour_actionPerformed(JPanel hidden)
+  {
+    Color col = JColorChooser.showDialog(this,
+            MessageManager.getString("label.select_hidden_colour"),
+            hiddenColour.getBackground());
+    if (col != null)
+    {
+      hidden.setBackground(col);
+    }
+    hidden.repaint();
+  }
+
+  @Override
+  protected void useLegacyGaps_actionPerformed(ActionEvent e)
+  {
+    boolean enabled = useLegacyGap.isSelected();
+    if (enabled)
+    {
+      gapColour.setBackground(
+              jalview.renderer.OverviewResColourFinder.OVERVIEW_DEFAULT_LEGACY_GAP);
+    }
+    else
+    {
+      gapColour.setBackground(
+              jalview.renderer.OverviewResColourFinder.OVERVIEW_DEFAULT_GAP);
+    }
+    gapColour.setEnabled(!enabled);
+    gapLabel.setEnabled(!enabled);
+  }
+
+  @Override
+  protected void resetOvDefaults_actionPerformed(ActionEvent e)
+  {
+    useLegacyGap.setSelected(false);
+    useLegacyGaps_actionPerformed(null);
+    showHiddenAtStart.setSelected(false);
+    hiddenColour.setBackground(
+            jalview.renderer.OverviewResColourFinder.OVERVIEW_DEFAULT_HIDDEN);
+  }
+
+  @Override
   protected void userIdWidth_actionPerformed()
   {
     try
@@ -847,12 +1170,11 @@ public class Preferences extends GPreferences
       }
     } catch (NumberFormatException x)
     {
-      JOptionPane
-              .showInternalMessageDialog(
-                      Desktop.desktop,
-                      MessageManager.getString("warn.user_defined_width_requirements"),
-                      MessageManager.getString("label.invalid_id_column_width"),
-                      JOptionPane.WARNING_MESSAGE);
+      JvOptionPane.showInternalMessageDialog(Desktop.desktop,
+              MessageManager
+                      .getString("warn.user_defined_width_requirements"),
+              MessageManager.getString("label.invalid_id_column_width"),
+              JvOptionPane.WARNING_MESSAGE);
       userIdWidth.setText("");
     }
   }
@@ -875,10 +1197,10 @@ public class Preferences extends GPreferences
       File f = new File(chimeraPath.getText());
       if (!f.canExecute())
       {
-        JOptionPane.showInternalMessageDialog(Desktop.desktop,
+        JvOptionPane.showInternalMessageDialog(Desktop.desktop,
                 MessageManager.getString("label.invalid_chimera_path"),
                 MessageManager.getString("label.invalid_name"),
-                JOptionPane.ERROR_MESSAGE);
+                JvOptionPane.ERROR_MESSAGE);
         return false;
       }
     }
@@ -892,7 +1214,7 @@ public class Preferences extends GPreferences
   @Override
   protected void structureViewer_actionPerformed(String selectedItem)
   {
-    if (!selectedItem.equals(Viewer.CHIMERA.name()))
+    if (!selectedItem.equals(ViewerType.CHIMERA.name()))
     {
       return;
     }
@@ -913,15 +1235,13 @@ public class Preferences extends GPreferences
     }
     if (!found)
     {
-      String[] options =
-      { "OK", "Help" };
-      int showHelp = JOptionPane.showInternalOptionDialog(
-              Desktop.desktop,
+      String[] options = { "OK", "Help" };
+      int showHelp = JvOptionPane.showInternalOptionDialog(Desktop.desktop,
               JvSwingUtils.wrapTooltip(true,
                       MessageManager.getString("label.chimera_missing")),
-              "", JOptionPane.YES_NO_OPTION,
-              JOptionPane.WARNING_MESSAGE, null, options, options[0]);
-      if (showHelp == JOptionPane.NO_OPTION)
+              "", JvOptionPane.YES_NO_OPTION, JvOptionPane.WARNING_MESSAGE,
+              null, options, options[0]);
+      if (showHelp == JvOptionPane.NO_OPTION)
       {
         try
         {
@@ -934,4 +1254,99 @@ public class Preferences extends GPreferences
     }
   }
 
+  public class OptionsParam
+  {
+    private String name;
+
+    private String code;
+
+    public OptionsParam(String name, String code)
+    {
+      this.name = name;
+      this.code = code;
+    }
+
+    public String getName()
+    {
+      return name;
+    }
+
+    public void setName(String name)
+    {
+      this.name = name;
+    }
+
+    public String getCode()
+    {
+      return code;
+    }
+
+    public void setCode(String code)
+    {
+      this.code = code;
+    }
+
+    @Override
+    public String toString()
+    {
+      return name;
+    }
+
+    @Override
+    public boolean equals(Object that)
+    {
+      if (!(that instanceof OptionsParam))
+      {
+        return false;
+      }
+      return this.code.equalsIgnoreCase(((OptionsParam) that).code);
+    }
+
+    @Override
+    public int hashCode()
+    {
+      return name.hashCode() + code.hashCode();
+    }
+  }
+
+  private class UrlListSelectionHandler implements ListSelectionListener
+  {
+
+    @Override
+    public void valueChanged(ListSelectionEvent e)
+    {
+      ListSelectionModel lsm = (ListSelectionModel) e.getSource();
+
+      int index = lsm.getMinSelectionIndex();
+      if (index == -1)
+      {
+        // no selection, so disable delete/edit buttons
+        editLink.setEnabled(false);
+        deleteLink.setEnabled(false);
+        return;
+      }
+      int modelIndex = linkUrlTable.convertRowIndexToModel(index);
+
+      // enable/disable edit and delete link buttons
+      if (((UrlLinkTableModel) linkUrlTable.getModel())
+              .isRowDeletable(modelIndex))
+      {
+        deleteLink.setEnabled(true);
+      }
+      else
+      {
+        deleteLink.setEnabled(false);
+      }
+
+      if (((UrlLinkTableModel) linkUrlTable.getModel())
+              .isRowEditable(modelIndex))
+      {
+        editLink.setEnabled(true);
+      }
+      else
+      {
+        editLink.setEnabled(false);
+      }
+    }
+  }
 }