JAL-2316 Adjusted unit tests. Tidied UrlLinkProviderI interface.
[jalview.git] / src / jalview / gui / Preferences.java
index eadf6ad..d129898 100755 (executable)
@@ -29,20 +29,25 @@ import jalview.io.JalviewFileView;
 import jalview.jbgui.GPreferences;
 import jalview.jbgui.GSequenceLink;
 import jalview.schemes.ColourSchemeProperty;
+import jalview.urls.UrlLinkTableModel;
+import jalview.urls.UrlProvider;
+import jalview.urls.UrlProviderI;
 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;
@@ -50,6 +55,18 @@ 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;
 
@@ -95,7 +112,9 @@ 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
@@ -105,63 +124,38 @@ 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
-    {
-      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);
-      }
-    }
+    String string = Cache.getDefault("SEQUENCE_LINKS",
+            UrlConstants.DEFAULT_STRING);
+    sequenceUrlLinks = new UrlProvider(UrlConstants.DEFAULT_LABEL, string);
+    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<String>();
   }
 
-  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.
    */
@@ -175,7 +169,8 @@ public class Preferences extends GPreferences
     wsPrefs = new WsPreferences();
     wsTab.add(wsPrefs, BorderLayout.CENTER);
     int width = 500, height = 450;
-    if (new jalview.util.Platform().isAMac())
+    new jalview.util.Platform();
+    if (Platform.isAMac())
     {
       width = 570;
       height = 480;
@@ -263,8 +258,7 @@ 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
@@ -298,8 +292,7 @@ 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);
@@ -315,21 +308,136 @@ 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<>();
+
+    sortKeys.add(new RowSorter.SortKey(3,
+            SortOrder.DESCENDING));
+    sortKeys.add(new RowSorter.SortKey(2, SortOrder.DESCENDING));
+    sortKeys.add(new RowSorter.SortKey(0, 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)
+      {
+        String id = entry.getStringValue(4);
+        return sequenceUrlLinks.isUserEntry(id);
+      }
+    };
+
+    final TableRowSorter<TableModel> customSorter = new TableRowSorter<>(
+            linkUrlTable.getModel());
+    customSorter.setRowFilter(customUrlFilter);
 
-    updateLinkData();
+    ActionListener onCustomOnly;
+    onCustomOnly = new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        filterTB.setText("");
+        sorter.setRowFilter(customUrlFilter);
+      }
+    };
+    userOnly.addActionListener(onCustomOnly);
+
+    filterTB.getDocument().addDocumentListener(new DocumentListener()
+    {
+      @Override
+      public void changedUpdate(DocumentEvent e)
+      {
+        sorter.setRowFilter(RowFilter.regexFilter("(?i)"
+                + filterTB.getText()));
+      }
+
+      @Override
+      public void removeUpdate(DocumentEvent e)
+      {
+        sorter.setRowFilter(RowFilter.regexFilter("(?i)"
+                + filterTB.getText()));
+      }
+
+      @Override
+      public void insertUpdate(DocumentEvent e)
+      {
+        sorter.setRowFilter(RowFilter.regexFilter("(?i)"
+                + filterTB.getText()));
+      }
+    });
+
+    // set up list selection functionality
+    linkUrlTable.getSelectionModel().addListSelectionListener(
+            new UrlListSelectionHandler());
+
+    // set up radio buttons
+    linkUrlTable.getColumn("Default").setCellRenderer(
+            new RadioButtonRenderer());
+    linkUrlTable.getColumn("Default")
+            .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));
+    useProxy_actionPerformed(); // make sure useProxy is correctly initialised
     proxyServerTB.setEnabled(useProxy.isSelected());
     proxyPortTB.setEnabled(useProxy.isSelected());
     proxyServerTB.setText(Cache.getDefault("PROXY_SERVER", ""));
@@ -346,15 +454,26 @@ 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());
+    userIdWidthlabel.setEnabled(!autoIdWidth.isSelected());
     Integer wi = Cache.getIntegerProperty("FIGURE_USERIDWIDTH");
     userIdWidth.setText(wi == null ? "" : wi.toString());
     blcjv.setSelected(Cache.getDefault("BLC_JVSUFFIX", true));
@@ -386,6 +505,7 @@ public class Preferences extends GPreferences
    * 
    * @param e
    */
+  @Override
   public void ok_actionPerformed(ActionEvent e)
   {
     if (!validateSettings())
@@ -465,8 +585,8 @@ public class Preferences extends GPreferences
     }
 
     final boolean showAutocalcFirst = sortAutocalc.getSelectedIndex() == 0;
-    Cache.applicationProperties.setProperty(SHOW_AUTOCALC_ABOVE,
-            Boolean.valueOf(showAutocalcFirst).toString());
+    Cache.applicationProperties.setProperty(SHOW_AUTOCALC_ABOVE, Boolean
+            .valueOf(showAutocalcFirst).toString());
 
     /*
      * Save Colours settings
@@ -494,19 +614,15 @@ public class Preferences extends GPreferences
     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
@@ -515,25 +631,16 @@ public class Preferences extends GPreferences
 
     jalview.util.BrowserLauncher.resetBrowser();
 
-    if (nameLinks.size() > 0)
+    // save user-defined and selected links
+    String links = linkUrlTable.getModel().toString();
+    if (links.isEmpty())
     {
-      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());
+      Cache.applicationProperties.remove("SEQUENCE_LINKS");
     }
     else
     {
-      Cache.applicationProperties.remove("SEQUENCE_LINKS");
+      Cache.applicationProperties.setProperty("SEQUENCE_LINKS",
+              links.toString());
     }
 
     Cache.applicationProperties.setProperty("USE_PROXY",
@@ -645,20 +752,22 @@ 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("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"));
     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);
 
@@ -677,6 +786,7 @@ public class Preferences extends GPreferences
    * @param e
    *          DOCUMENT ME!
    */
+  @Override
   public void cancel_actionPerformed(ActionEvent e)
   {
     try
@@ -695,6 +805,7 @@ public class Preferences extends GPreferences
    * @param e
    *          DOCUMENT ME!
    */
+  @Override
   public void annotations_actionPerformed(ActionEvent e)
   {
     conservation.setEnabled(annotations.isSelected());
@@ -708,9 +819,9 @@ 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)
@@ -721,9 +832,8 @@ public class Preferences extends GPreferences
       {
         if (link.checkValid())
         {
-          nameLinks.addElement(link.getName());
-          urlLinks.addElement(link.getURL());
-          updateLinkData();
+          ((UrlLinkTableModel) linkUrlTable.getModel()).insertRow(
+                  link.getName(), link.getURL());
           valid = true;
         }
       }
@@ -734,13 +844,15 @@ 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)
     {
+      // no row was selected
       JOptionPane.showInternalMessageDialog(Desktop.desktop,
               MessageManager.getString("label.no_link_selected"),
               MessageManager.getString("label.no_link_selected"),
@@ -748,26 +860,23 @@ public class Preferences extends GPreferences
       return;
     }
 
-    link.setName(nameLinks.elementAt(index).toString());
-    link.setURL(urlLinks.elementAt(index).toString());
+    link.setName(linkUrlTable.getValueAt(index, 0).toString());
+    link.setURL(linkUrlTable.getValueAt(index, 1).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 (link.checkValid())
         {
-          nameLinks.setElementAt(link.getName(), index);
-          urlLinks.setElementAt(link.getURL(), index);
-          updateLinkData();
+          linkUrlTable.setValueAt(link.getName(), index, 0);
+          linkUrlTable.setValueAt(link.getURL(), index, 1);
           valid = true;
         }
       }
-
       else
       {
         break;
@@ -775,32 +884,36 @@ 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)
     {
+      // no row is selected
       JOptionPane.showInternalMessageDialog(Desktop.desktop,
               MessageManager.getString("label.no_link_selected"),
               MessageManager.getString("label.no_link_selected"),
               JOptionPane.WARNING_MESSAGE);
       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);
 
@@ -818,13 +931,14 @@ 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;
   }
@@ -833,7 +947,8 @@ 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);
@@ -845,7 +960,8 @@ 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);
@@ -870,12 +986,10 @@ 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);
+      JOptionPane.showInternalMessageDialog(Desktop.desktop, MessageManager
+              .getString("warn.user_defined_width_requirements"),
+              MessageManager.getString("label.invalid_id_column_width"),
+              JOptionPane.WARNING_MESSAGE);
       userIdWidth.setText("");
     }
   }
@@ -936,14 +1050,13 @@ public class Preferences extends GPreferences
     }
     if (!found)
     {
-      String[] options =
-      { "OK", "Help" };
+      String[] options = { "OK", "Help" };
       int showHelp = JOptionPane.showInternalOptionDialog(
               Desktop.desktop,
               JvSwingUtils.wrapTooltip(true,
                       MessageManager.getString("label.chimera_missing")),
-              "", JOptionPane.YES_NO_OPTION,
-              JOptionPane.WARNING_MESSAGE, null, options, options[0]);
+              "", JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE,
+              null, options, options[0]);
       if (showHelp == JOptionPane.NO_OPTION)
       {
         try
@@ -957,4 +1070,100 @@ 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);
+
+      // determine if the new selection is a custom url or not
+      if (!sequenceUrlLinks.isUserEntry((String) linkUrlTable
+.getModel()
+              .getValueAt(modelIndex, 4))) // KM TODO do this better
+      {
+        // entry is not a user-defined url and so should not be edited
+        // disable edit and delete buttons
+        deleteLink.setEnabled(false);
+        editLink.setEnabled(false);
+      }
+      else
+      {
+        deleteLink.setEnabled(true);
+        editLink.setEnabled(true);
+      }
+
+      // BUT it's the default url, don't allow deletion
+      if ((boolean) linkUrlTable.getValueAt(index, 3))
+      {
+        deleteLink.setEnabled(false);
+      }
+    }
+}
 }