JAL-3049 redo (part of) commit 92bc328
[jalview.git] / src / jalview / gui / FeatureSettings.java
old mode 100755 (executable)
new mode 100644 (file)
index 7c95ed7..390427a
-/*\r
- * Jalview - A Sequence Alignment Editor and Viewer\r
- * Copyright (C) 2005 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle\r
- *\r
- * This program is free software; you can redistribute it and/or\r
- * modify it under the terms of the GNU General Public License\r
- * as published by the Free Software Foundation; either version 2\r
- * of the License, or (at your option) any later version.\r
- *\r
- * This program is distributed in the hope that it will be useful,\r
- * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
- * GNU General Public License for more details.\r
- *\r
- * You should have received a copy of the GNU General Public License\r
- * along with this program; if not, write to the Free Software\r
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA\r
- */\r
-package jalview.gui;\r
-\r
-import jalview.datamodel.*;\r
-import javax.swing.*;\r
-import javax.swing.event.*;\r
-import java.awt.*;\r
-import java.util.*;\r
-import javax.swing.BorderFactory;\r
-import java.awt.event.*;\r
-import javax.swing.table.*;\r
-import java.io.*;\r
-import jalview.io.JalviewFileChooser;\r
-\r
-public class FeatureSettings extends JPanel\r
-{\r
-\r
-  final FeatureRenderer fr;\r
-  final AlignmentPanel ap;\r
-  final AlignViewport av;\r
-  Hashtable allFeatures;\r
-  Object [][] originalData;\r
-  final JInternalFrame frame;\r
-  JScrollPane scrollPane = new JScrollPane();\r
-  JTable table;\r
-  JPanel groupPanel;\r
-\r
-  public FeatureSettings(AlignViewport av, final AlignmentPanel ap)\r
-  {\r
-    this.ap = ap;\r
-    this.av = av;\r
-    fr = ap.seqPanel.seqCanvas.getFeatureRenderer();\r
-    av.alignment.getSequences();\r
-    frame = new JInternalFrame();\r
-    frame.setContentPane(this);\r
-    Desktop.addInternalFrame(frame, "Sequence Feature Settings", 400, 300);\r
-\r
-    setTableData();\r
-\r
-    final JSlider transparency = new JSlider(0, 70, 0);\r
-    transparency.addChangeListener(new ChangeListener()\r
-    {\r
-      public void stateChanged(ChangeEvent evt)\r
-      {\r
-        fr.setTransparency( (float) (100 - transparency.getValue()) / 100f);\r
-        ap.repaint();\r
-      }\r
-    });\r
-\r
-    JPanel transPanel = new JPanel(new FlowLayout());\r
-    transPanel.add(new JLabel("Transparency"));\r
-    transPanel.add(transparency);\r
-\r
-    //////////////////////////////////////////////\r
-    //We're going to need those OK cancel buttons\r
-    JPanel buttonPanel = new JPanel(new FlowLayout());\r
-    JButton button = new JButton("OK");\r
-    button.addActionListener(new ActionListener()\r
-    {\r
-      public void actionPerformed(ActionEvent evt)\r
-      {\r
-        try\r
-        {\r
-          frame.setClosed(true);\r
-        }\r
-        catch (Exception exe)\r
-        {}\r
-      }\r
-    });\r
-    buttonPanel.add(button);\r
-    button = new JButton("Cancel");\r
-    button.addActionListener(new ActionListener()\r
-    {\r
-      public void actionPerformed(ActionEvent evt)\r
-      {\r
-        try\r
-        {\r
-          updateFeatureRenderer(originalData);\r
-          frame.setClosed(true);\r
-        }\r
-        catch (Exception exe)\r
-        {}\r
-      }\r
-    });\r
-    buttonPanel.add(button);\r
-\r
-    button = new JButton("Load Colours");\r
-    button.addActionListener(new ActionListener()\r
-    {\r
-      public void actionPerformed(ActionEvent evt)\r
-      {\r
-        load();\r
-      }\r
-    });\r
-    buttonPanel.add(button);\r
-    button = new JButton("Save Colours");\r
-    button.addActionListener(new ActionListener()\r
-    {\r
-      public void actionPerformed(ActionEvent evt)\r
-      {\r
-        save();\r
-      }\r
-    });\r
-    buttonPanel.add(button);\r
-\r
-    this.setLayout(new BorderLayout());\r
-    JPanel bigPanel = new JPanel(new BorderLayout());\r
-    bigPanel.add(transPanel, BorderLayout.SOUTH);\r
-    bigPanel.add(scrollPane, BorderLayout.CENTER);\r
-    if(groupPanel!=null)\r
-    {\r
-      groupPanel.setLayout(\r
-          new GridLayout(groupPanel.getComponentCount()/3, 4));\r
-      groupPanel.validate();\r
-      bigPanel.add(groupPanel, BorderLayout.NORTH);\r
-    }\r
-    add(bigPanel, BorderLayout.CENTER);\r
-    add(buttonPanel, BorderLayout.SOUTH);\r
-\r
-\r
-  }\r
-\r
-  void setTableData()\r
-  {\r
-    if (fr.featureGroups == null)\r
-      fr.featureGroups = new Hashtable();\r
-    else\r
-      fr.featureGroups.clear();\r
-\r
-    allFeatures = new Hashtable();\r
-    SequenceFeature[] features;\r
-\r
-  for (int i = 0; i < av.alignment.getHeight(); i++)\r
-  {\r
-    features = av.alignment.getSequenceAt(i).getDatasetSequence().\r
-        getSequenceFeatures();\r
-\r
-    if (features == null)\r
-      continue;\r
-\r
-    int index = 0;\r
-    while (index < features.length)\r
-    {\r
-      if(features[index].getFeatureGroup()!=null\r
-          && !fr.featureGroups.containsKey(features[index].getFeatureGroup()))\r
-       {\r
-         fr.featureGroups.put(features[index].getFeatureGroup(), new Boolean(true));\r
-         if(groupPanel==null)\r
-            groupPanel = new JPanel();\r
-\r
-          final JCheckBox check = new JCheckBox(features[index].getFeatureGroup(), true);\r
-          check.setFont(new Font("Serif", Font.BOLD, 12));\r
-          check.addItemListener(new ItemListener()\r
-              {\r
-                public void itemStateChanged(ItemEvent evt)\r
-                {\r
-                  if (fr.featureGroups.containsKey(check.getText()))\r
-                  {\r
-                    fr.featureGroups.put(check.getText(),\r
-                                         new Boolean(check.isSelected()));\r
-                    ap.seqPanel.seqCanvas.repaint();\r
-                    if (ap.overviewPanel != null)\r
-                      ap.overviewPanel.updateOverviewImage();\r
-                  }\r
-                  resetTable();\r
-                }\r
-              });\r
-          groupPanel.add(check);\r
-       }\r
-      if (!allFeatures.contains(features[index].getType()))\r
-      {\r
-        if(features[index].featureGroup!=null)\r
-          allFeatures.put(features[index].getType(), features[index].featureGroup);\r
-        else\r
-          allFeatures.put(features[index].getType(), "NOGROUP");\r
-      }\r
-      index++;\r
-    }\r
-  }\r
-    if(allFeatures.size()<1)\r
-     {\r
-       try\r
-       { frame.setClosed(true);  }\r
-       catch (Exception ex){}\r
-\r
-       JOptionPane.showInternalMessageDialog(\r
-           Desktop.desktop, "No features have been added to this alignment!",\r
-           "No Sequence Features", JOptionPane.WARNING_MESSAGE);\r
-\r
-       return;\r
-     }\r
-\r
-     resetTable();\r
-  }\r
-\r
-  void resetTable()\r
-  {\r
-    int fSize = allFeatures.size();\r
-\r
-    String type;\r
-    boolean originalExists = false;\r
-    if (originalData != null)\r
-      originalExists = true;\r
-    else\r
-      originalData = new Object[fSize][3];\r
-\r
-    Object[][] tmp = new Object[fSize][3];\r
-    int tmpIndex = 0;\r
-\r
-    Enumeration en = allFeatures.keys();\r
-    int i=0;\r
-    while(en.hasMoreElements())\r
-    {\r
-      type = en.nextElement().toString();\r
-      Color col = fr.getColour(type);\r
-\r
-      //This will ignore any features which are in groups not shown\r
-     Object visibleGroup =  fr.featureGroups.get(allFeatures.get(type));\r
-     if(visibleGroup == null\r
-           || ((Boolean)(visibleGroup)).booleanValue())\r
-      {\r
-        tmp[tmpIndex][0] = type;\r
-        tmp[tmpIndex][1] = col;\r
-        if (av.featuresDisplayed != null)\r
-          tmp[tmpIndex][2] = new Boolean(av.featuresDisplayed.containsKey(type));\r
-        else\r
-          tmp[tmpIndex][2] = new Boolean(true);\r
-\r
-        tmpIndex++;\r
-      }\r
-\r
-\r
-      if (!originalExists)\r
-      {\r
-        originalData[i][0] = type;\r
-        originalData[i][1] = col;\r
-        if (av.featuresDisplayed != null)\r
-          originalData[i][2] = new Boolean(av.featuresDisplayed.contains(type));\r
-        else\r
-          originalData[i][2] = new Boolean(true);\r
-      }\r
-      i++;\r
-    }\r
-\r
-    Object [][]data = new Object[tmpIndex][3];\r
-    System.arraycopy(tmp, 0, data,0, tmpIndex);\r
-\r
-    table = new JTable(new FeatureTableModel(data));\r
-    scrollPane.setViewportView(table);\r
-    table.getTableHeader().setFont(new Font("Verdana", Font.PLAIN, 12));\r
-    table.setFont(new Font("Verdana", Font.PLAIN, 12));\r
-    table.setDefaultRenderer(Color.class,\r
-                         new ColorRenderer());\r
-\r
-    table.setDefaultEditor(Color.class,\r
-                      new ColorEditor());\r
-\r
-    table.getColumnModel().getColumn(0).setPreferredWidth(200);\r
-\r
-    table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);\r
-\r
-    table.addMouseListener(new MouseAdapter()\r
-        {\r
-          public void mousePressed(MouseEvent evt)\r
-          {\r
-            selectedRow = table.rowAtPoint(evt.getPoint());\r
-          }\r
-        });\r
-\r
-    table.addMouseMotionListener(new MouseMotionAdapter()\r
-        {\r
-          public void mouseDragged(MouseEvent evt)\r
-          {\r
-            int newRow = table.rowAtPoint(evt.getPoint());\r
-            if(newRow!=selectedRow\r
-               && selectedRow!=-1\r
-               && newRow!=-1)\r
-            {\r
-              Object[] temp = new Object[3];\r
-              temp[0] = table.getValueAt(selectedRow, 0);\r
-              temp[1] = table.getValueAt(selectedRow, 1);\r
-              temp[2] = table.getValueAt(selectedRow, 2);\r
-\r
-              table.setValueAt(table.getValueAt(newRow, 0), selectedRow, 0);\r
-              table.setValueAt(table.getValueAt(newRow, 1), selectedRow, 1);\r
-              table.setValueAt(table.getValueAt(newRow, 2), selectedRow, 2);\r
-\r
-              table.setValueAt(temp[0], newRow, 0);\r
-              table.setValueAt(temp[1], newRow, 1);\r
-              table.setValueAt(temp[2], newRow, 2);\r
-\r
-              selectedRow = newRow;\r
-            }\r
-          }\r
-    });\r
-\r
-    updateFeatureRenderer(data);\r
-\r
-  }\r
-\r
-  void load()\r
-  {\r
-    JalviewFileChooser chooser = new JalviewFileChooser(jalview.bin.Cache.getProperty(\r
-                 "LAST_DIRECTORY"), new String[] { "fc" },\r
-             new String[] { "Sequence Feature Colours" }, "Sequence Feature Colours");\r
-     chooser.setFileView(new jalview.io.JalviewFileView());\r
-     chooser.setDialogTitle("Load Feature Colours");\r
-     chooser.setToolTipText("Load");\r
-\r
-     int value = chooser.showOpenDialog(this);\r
-\r
-     if (value == JalviewFileChooser.APPROVE_OPTION)\r
-     {\r
-       File file = chooser.getSelectedFile();\r
-\r
-       try\r
-       {\r
-         InputStreamReader in = new InputStreamReader(new FileInputStream(\r
-             file), "UTF-8");\r
-\r
-         jalview.binding.JalviewUserColours jucs = new jalview.binding.\r
-             JalviewUserColours();\r
-         jucs = (jalview.binding.JalviewUserColours) jucs.unmarshal(in);\r
-\r
-\r
-         for (int i = 0; i < jucs.getColourCount(); i++)\r
-         {\r
-           fr.setColour( jucs.getColour(i).getName(),\r
-                          new Color(Integer.parseInt( jucs.getColour(i).getRGB(), 16)));\r
-         }\r
-\r
-         setTableData();\r
-         ap.repaint();\r
-       }\r
-       catch (Exception ex)\r
-       {\r
-         System.out.println("Error loading User ColourFile\n" + ex);\r
-       }\r
-     }\r
-  }\r
-\r
-  void save()\r
-  {\r
-    JalviewFileChooser chooser = new JalviewFileChooser(jalview.bin.Cache.getProperty(\r
-                "LAST_DIRECTORY"), new String[] { "fc" },\r
-            new String[] { "Sequence Feature Colours" }, "Sequence Feature Colours");\r
-    chooser.setFileView(new jalview.io.JalviewFileView());\r
-    chooser.setDialogTitle("Save Feature Colour Scheme");\r
-    chooser.setToolTipText("Save");\r
-\r
-    int value = chooser.showSaveDialog(this);\r
-\r
-    if (value == JalviewFileChooser.APPROVE_OPTION)\r
-    {\r
-        String choice = chooser.getSelectedFile().getPath();\r
-        jalview.binding.JalviewUserColours ucs = new jalview.binding.JalviewUserColours();\r
-        ucs.setSchemeName("Sequence Features");\r
-        try\r
-        {\r
-            PrintWriter out = new PrintWriter(new OutputStreamWriter(\r
-                        new FileOutputStream(choice), "UTF-8"));\r
-\r
-            Enumeration e = fr.featureColours.keys();\r
-           while(e.hasMoreElements())\r
-           {\r
-\r
-\r
-                jalview.binding.Colour col = new jalview.binding.Colour();\r
-                col.setName(e.nextElement().toString());\r
-                col.setRGB(jalview.util.Format.getHexString(\r
-                        fr.getColour(col.getName())));\r
-                ucs.addColour(col);\r
-            }\r
-\r
-            ucs.marshal(out);\r
-            out.close();\r
-        }\r
-        catch (Exception ex)\r
-        {\r
-            ex.printStackTrace();\r
-        }\r
-    }\r
-\r
-  }\r
-\r
-  public void updateFeatureRenderer(Object [][] data)\r
-  {\r
-    fr.setFeaturePriority( data );\r
-    ap.repaint();\r
-\r
-    if(ap.overviewPanel!=null)\r
-      ap.overviewPanel.updateOverviewImage();\r
-  }\r
-\r
-  int selectedRow =-1;\r
-\r
-\r
-  /////////////////////////////////////////////////////////////////////////\r
-  // http://java.sun.com/docs/books/tutorial/uiswing/components/table.html\r
-  /////////////////////////////////////////////////////////////////////////\r
-  class FeatureTableModel\r
-      extends AbstractTableModel\r
-  {\r
-    FeatureTableModel(Object[][] data)\r
-    {\r
-      this.data = data;\r
-    }\r
-\r
-    private String[] columnNames = {"Feature Type", "Colour","Display"};\r
-          private Object[][] data;\r
-\r
-          public Object[][] getData()\r
-          {\r
-            return data;\r
-          }\r
-\r
-          public int getColumnCount() {\r
-              return columnNames.length;\r
-          }\r
-\r
-          public Object[] getRow(int row)\r
-          {\r
-            return data[row];\r
-          }\r
-\r
-          public int getRowCount() {\r
-              return data.length;\r
-          }\r
-\r
-          public String getColumnName(int col) {\r
-              return columnNames[col];\r
-          }\r
-\r
-          public Object getValueAt(int row, int col) {\r
-              return data[row][col];\r
-          }\r
-\r
-          public Class getColumnClass(int c) {\r
-              return getValueAt(0, c).getClass();\r
-          }\r
-\r
-          public boolean isCellEditable(int row, int col) {\r
-              return col==0 ? false:true;\r
-          }\r
-\r
-          public void setValueAt(Object value, int row, int col) {\r
-              data[row][col] = value;\r
-              fireTableCellUpdated(row, col);\r
-              updateFeatureRenderer(data);\r
-          }\r
-\r
-    }\r
-    class ColorRenderer extends JLabel\r
-                              implements TableCellRenderer {\r
-       javax.swing.border.Border unselectedBorder = null;\r
-       javax.swing.border.Border selectedBorder = null;\r
-\r
-       public ColorRenderer() {\r
-           setOpaque(true); //MUST do this for background to show up.\r
-       }\r
-\r
-       public Component getTableCellRendererComponent(\r
-                               JTable table, Object color,\r
-                               boolean isSelected, boolean hasFocus,\r
-                               int row, int column) {\r
-           Color newColor = (Color)color;\r
-           setBackground(newColor);\r
-               if (isSelected) {\r
-                   if (selectedBorder == null) {\r
-                       selectedBorder = BorderFactory.createMatteBorder(2,5,2,5,\r
-                                                 table.getSelectionBackground());\r
-                   }\r
-                   setBorder(selectedBorder);\r
-               } else {\r
-                   if (unselectedBorder == null) {\r
-                       unselectedBorder = BorderFactory.createMatteBorder(2,5,2,5,\r
-                                                 table.getBackground());\r
-                   }\r
-                   setBorder(unselectedBorder);\r
-               }\r
-\r
-           setToolTipText("RGB value: " + newColor.getRed() + ", "\r
-                                        + newColor.getGreen() + ", "\r
-                                        + newColor.getBlue());\r
-           return this;\r
-       }\r
-   }\r
-}\r
-\r
- class ColorEditor extends AbstractCellEditor\r
-                          implements TableCellEditor,\r
-                                     ActionListener {\r
-     Color currentColor;\r
-     JButton button;\r
-     JColorChooser colorChooser;\r
-     JDialog dialog;\r
-     protected static final String EDIT = "edit";\r
-\r
-     public ColorEditor() {\r
-         //Set up the editor (from the table's point of view),\r
-         //which is a button.\r
-         //This button brings up the color chooser dialog,\r
-         //which is the editor from the user's point of view.\r
-         button = new JButton();\r
-         button.setActionCommand(EDIT);\r
-         button.addActionListener(this);\r
-         button.setBorderPainted(false);\r
-         //Set up the dialog that the button brings up.\r
-         colorChooser = new JColorChooser();\r
-         dialog = JColorChooser.createDialog(button,\r
-                                         "Select new Colour",\r
-                                         true,  //modal\r
-                                         colorChooser,\r
-                                         this,  //OK button handler\r
-                                         null); //no CANCEL button handler\r
-     }\r
-\r
-     /**\r
-      * Handles events from the editor button and from\r
-      * the dialog's OK button.\r
-      */\r
-     public void actionPerformed(ActionEvent e) {\r
-\r
-          if (EDIT.equals(e.getActionCommand())) {\r
-             //The user has clicked the cell, so\r
-             //bring up the dialog.\r
-             button.setBackground(currentColor);\r
-             colorChooser.setColor(currentColor);\r
-             dialog.setVisible(true);\r
-\r
-             //Make the renderer reappear.\r
-             fireEditingStopped();\r
-\r
-         } else { //User pressed dialog's "OK" button.\r
-             currentColor = colorChooser.getColor();\r
-         }\r
-     }\r
-\r
-     //Implement the one CellEditor method that AbstractCellEditor doesn't.\r
-     public Object getCellEditorValue() {\r
-         return currentColor;\r
-     }\r
-\r
-     //Implement the one method defined by TableCellEditor.\r
-     public Component getTableCellEditorComponent(JTable table,\r
-                                                  Object value,\r
-                                                  boolean isSelected,\r
-                                                  int row,\r
-                                                  int column) {\r
-         currentColor = (Color)value;\r
-         return button;\r
-     }\r
-}\r
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
+ * 
+ * This file is part of Jalview.
+ * 
+ * Jalview is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License 
+ * as published by the Free Software Foundation, either version 3
+ * of the License, or (at your option) any later version.
+ *  
+ * Jalview is distributed in the hope that it will be useful, but 
+ * WITHOUT ANY WARRANTY; without even the implied warranty 
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+ * PURPOSE.  See the GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ */
+package jalview.gui;
+
+import jalview.api.FeatureColourI;
+import jalview.api.FeatureSettingsControllerI;
+import jalview.datamodel.AlignmentI;
+import jalview.datamodel.SequenceI;
+import jalview.datamodel.features.FeatureMatcher;
+import jalview.datamodel.features.FeatureMatcherI;
+import jalview.datamodel.features.FeatureMatcherSet;
+import jalview.datamodel.features.FeatureMatcherSetI;
+import jalview.gui.Help.HelpId;
+import jalview.io.JalviewFileChooser;
+import jalview.io.JalviewFileView;
+import jalview.schemes.FeatureColour;
+import jalview.util.MessageManager;
+import jalview.util.Platform;
+import jalview.viewmodel.seqfeatures.FeatureRendererModel.FeatureSettingsBean;
+import jalview.xml.binding.jalview.JalviewUserColours;
+import jalview.xml.binding.jalview.JalviewUserColours.Colour;
+import jalview.xml.binding.jalview.JalviewUserColours.Filter;
+import jalview.xml.binding.jalview.ObjectFactory;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.Graphics;
+import java.awt.GridLayout;
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.ItemEvent;
+import java.awt.event.ItemListener;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseMotionAdapter;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Hashtable;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import javax.help.HelpSetException;
+import javax.swing.AbstractCellEditor;
+import javax.swing.BorderFactory;
+import javax.swing.Icon;
+import javax.swing.JButton;
+import javax.swing.JCheckBox;
+import javax.swing.JColorChooser;
+import javax.swing.JDialog;
+import javax.swing.JInternalFrame;
+import javax.swing.JLabel;
+import javax.swing.JLayeredPane;
+import javax.swing.JMenuItem;
+import javax.swing.JPanel;
+import javax.swing.JPopupMenu;
+import javax.swing.JScrollPane;
+import javax.swing.JSlider;
+import javax.swing.JTable;
+import javax.swing.ListSelectionModel;
+import javax.swing.SwingConstants;
+import javax.swing.border.Border;
+import javax.swing.event.ChangeEvent;
+import javax.swing.event.ChangeListener;
+import javax.swing.table.AbstractTableModel;
+import javax.swing.table.JTableHeader;
+import javax.swing.table.TableCellEditor;
+import javax.swing.table.TableCellRenderer;
+import javax.swing.table.TableColumn;
+import javax.xml.bind.JAXBContext;
+import javax.xml.bind.JAXBElement;
+import javax.xml.bind.Marshaller;
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamReader;
+
+public class FeatureSettings extends JPanel
+        implements FeatureSettingsControllerI
+{
+  private static final String SEQUENCE_FEATURE_COLOURS = MessageManager
+          .getString("label.sequence_feature_colours");
+
+  /*
+   * column indices of fields in Feature Settings table
+   */
+  static final int TYPE_COLUMN = 0;
+
+  static final int COLOUR_COLUMN = 1;
+
+  static final int FILTER_COLUMN = 2;
+
+  static final int SHOW_COLUMN = 3;
+
+  private static final int COLUMN_COUNT = 4;
+
+  private static final int MIN_WIDTH = 400;
+
+  private static final int MIN_HEIGHT = 400;
+
+  private final static String BASE_TOOLTIP = "Click to edit, right-click for menu";
+
+  final FeatureRenderer fr;
+
+  public final AlignFrame af;
+
+  /*
+   * 'original' fields hold settings to restore on Cancel
+   */
+  Object[][] originalData;
+
+  private float originalTransparency;
+
+  private Map<String, FeatureMatcherSetI> originalFilters;
+
+  final JInternalFrame frame;
+
+  JScrollPane scrollPane = new JScrollPane();
+
+  JTable table;
+
+  JPanel groupPanel;
+
+  JSlider transparency = new JSlider();
+
+  /*
+   * when true, constructor is still executing - so ignore UI events
+   */
+  protected volatile boolean inConstruction = true;
+
+  int selectedRow = -1;
+
+  boolean resettingTable = false;
+
+  /*
+   * true when Feature Settings are updating from feature renderer
+   */
+  private boolean handlingUpdate = false;
+
+  /*
+   * holds {featureCount, totalExtent} for each feature type
+   */
+  Map<String, float[]> typeWidth = null;
+
+  /**
+   * Constructor
+   * 
+   * @param af
+   */
+  public FeatureSettings(AlignFrame alignFrame)
+  {
+    this.af = alignFrame;
+    fr = af.getFeatureRenderer();
+
+    // save transparency for restore on Cancel
+    originalTransparency = fr.getTransparency();
+    int originalTransparencyAsPercent = (int) (originalTransparency * 100);
+    transparency.setMaximum(100 - originalTransparencyAsPercent);
+
+    originalFilters = new HashMap<>(fr.getFeatureFilters()); // shallow copy
+
+    try
+    {
+      jbInit();
+    } catch (Exception ex)
+    {
+      ex.printStackTrace();
+    }
+
+    table = new JTable()
+    {
+      static final String tt = "Click to edit, right-click for menu"; // todo i18n
+      
+      @Override
+      public String getToolTipText(MouseEvent e)
+      {
+        String tip = null;
+        int column = table.columnAtPoint(e.getPoint());
+        int row = table.rowAtPoint(e.getPoint());
+
+        switch (column)
+        {
+        case TYPE_COLUMN:
+          tip = JvSwingUtils.wrapTooltip(true, MessageManager
+                  .getString("label.feature_settings_click_drag"));
+          break;
+        case COLOUR_COLUMN:
+          FeatureColourI colour = (FeatureColourI) table.getValueAt(row,
+                  column);
+          tip = getColorTooltip(colour, true);
+          break;
+        case FILTER_COLUMN:
+          FeatureMatcherSet o = (FeatureMatcherSet) table.getValueAt(row,
+                  column);
+          tip = o.isEmpty()
+                  ? MessageManager
+                          .getString("label.configure_feature_tooltip")
+                  : o.toString();
+          break;
+        default:
+          break;
+        }
+        return tip;
+      }
+
+      /**
+       * Position the tooltip near the bottom edge of, and half way across, the
+       * current cell
+       */
+      @Override
+      public Point getToolTipLocation(MouseEvent e)
+      {
+        Point point = e.getPoint();
+        int column = table.columnAtPoint(point);
+        int row = table.rowAtPoint(point);
+        Rectangle r = getCellRect(row, column, false);
+        Point loc = new Point(r.x + r.width / 2, r.y + r.height - 3);
+        return loc;
+      }
+    };
+    JTableHeader tableHeader = table.getTableHeader();
+    tableHeader.setFont(new Font("Verdana", Font.PLAIN, 12));
+    tableHeader.setReorderingAllowed(false);
+    table.setFont(new Font("Verdana", Font.PLAIN, 12));
+
+    // table.setDefaultRenderer(Color.class, new ColorRenderer());
+    // table.setDefaultEditor(Color.class, new ColorEditor(this));
+    //
+    table.setDefaultEditor(FeatureColour.class, new ColorEditor(this));
+    table.setDefaultRenderer(FeatureColour.class, new ColorRenderer());
+
+    table.setDefaultEditor(FeatureMatcherSet.class, new FilterEditor(this));
+    table.setDefaultRenderer(FeatureMatcherSet.class, new FilterRenderer());
+
+    TableColumn colourColumn = new TableColumn(COLOUR_COLUMN, 75,
+            new ColorRenderer(), new ColorEditor(this));
+    table.addColumn(colourColumn);
+
+    TableColumn filterColumn = new TableColumn(FILTER_COLUMN, 75,
+            new FilterRenderer(), new FilterEditor(this));
+    table.addColumn(filterColumn);
+
+    table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
+
+    table.addMouseListener(new MouseAdapter()
+    {
+      @Override
+      public void mousePressed(MouseEvent evt)
+      {
+        selectedRow = table.rowAtPoint(evt.getPoint());
+        String type = (String) table.getValueAt(selectedRow, TYPE_COLUMN);
+        if (evt.isPopupTrigger())
+        {
+          Object colour = table.getValueAt(selectedRow, COLOUR_COLUMN);
+          popupSort(selectedRow, type, colour, fr.getMinMax(), evt.getX(),
+                  evt.getY());
+        }
+        else if (evt.getClickCount() == 2)
+        {
+          boolean invertSelection = evt.isAltDown();
+          boolean toggleSelection = Platform.isControlDown(evt);
+          boolean extendSelection = evt.isShiftDown();
+          fr.ap.alignFrame.avc.markColumnsContainingFeatures(
+                  invertSelection, extendSelection, toggleSelection, type);
+        }
+      }
+
+      // isPopupTrigger fires on mouseReleased on Windows
+      @Override
+      public void mouseReleased(MouseEvent evt)
+      {
+        selectedRow = table.rowAtPoint(evt.getPoint());
+        if (evt.isPopupTrigger())
+        {
+          String type = (String) table.getValueAt(selectedRow, TYPE_COLUMN);
+          Object colour = table.getValueAt(selectedRow, COLOUR_COLUMN);
+          popupSort(selectedRow, type, colour, fr.getMinMax(), evt.getX(),
+                  evt.getY());
+        }
+      }
+    });
+
+    table.addMouseMotionListener(new MouseMotionAdapter()
+    {
+      @Override
+      public void mouseDragged(MouseEvent evt)
+      {
+        int newRow = table.rowAtPoint(evt.getPoint());
+        if (newRow != selectedRow && selectedRow != -1 && newRow != -1)
+        {
+          /*
+           * reposition 'selectedRow' to 'newRow' (the dragged to location)
+           * this could be more than one row away for a very fast drag action
+           * so just swap it with adjacent rows until we get it there
+           */
+          Object[][] data = ((FeatureTableModel) table.getModel())
+                  .getData();
+          int direction = newRow < selectedRow ? -1 : 1;
+          for (int i = selectedRow; i != newRow; i += direction)
+          {
+            Object[] temp = data[i];
+            data[i] = data[i + direction];
+            data[i + direction] = temp;
+          }
+          updateFeatureRenderer(data);
+          table.repaint();
+          selectedRow = newRow;
+        }
+      }
+    });
+    // table.setToolTipText(JvSwingUtils.wrapTooltip(true,
+    // MessageManager.getString("label.feature_settings_click_drag")));
+    scrollPane.setViewportView(table);
+
+    if (af.getViewport().isShowSequenceFeatures() || !fr.hasRenderOrder())
+    {
+      fr.findAllFeatures(true); // display everything!
+    }
+
+    discoverAllFeatureData();
+    final PropertyChangeListener change;
+    final FeatureSettings fs = this;
+    fr.addPropertyChangeListener(change = new PropertyChangeListener()
+    {
+      @Override
+      public void propertyChange(PropertyChangeEvent evt)
+      {
+        if (!fs.resettingTable && !fs.handlingUpdate)
+        {
+          fs.handlingUpdate = true;
+          fs.resetTable(null);
+          // new groups may be added with new sequence feature types only
+          fs.handlingUpdate = false;
+        }
+      }
+
+    });
+
+    frame = new JInternalFrame();
+    frame.setContentPane(this);
+    if (Platform.isAMac())
+    {
+      Desktop.addInternalFrame(frame,
+              MessageManager.getString("label.sequence_feature_settings"),
+              600, 480);
+    }
+    else
+    {
+      Desktop.addInternalFrame(frame,
+              MessageManager.getString("label.sequence_feature_settings"),
+              600, 450);
+    }
+    frame.setMinimumSize(new Dimension(MIN_WIDTH, MIN_HEIGHT));
+
+    frame.addInternalFrameListener(
+            new javax.swing.event.InternalFrameAdapter()
+            {
+              @Override
+              public void internalFrameClosed(
+                      javax.swing.event.InternalFrameEvent evt)
+              {
+                fr.removePropertyChangeListener(change);
+              };
+            });
+    frame.setLayer(JLayeredPane.PALETTE_LAYER);
+    inConstruction = false;
+  }
+
+  protected void popupSort(final int rowSelected, final String type,
+          final Object typeCol, final Map<String, float[][]> minmax, int x,
+          int y)
+  {
+    final FeatureColourI featureColour = (FeatureColourI) typeCol;
+
+    JPopupMenu men = new JPopupMenu(MessageManager
+            .formatMessage("label.settings_for_param", new String[]
+            { type }));
+    JMenuItem scr = new JMenuItem(
+            MessageManager.getString("label.sort_by_score"));
+    men.add(scr);
+    final FeatureSettings me = this;
+    scr.addActionListener(new ActionListener()
+    {
+
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        me.af.avc
+                .sortAlignmentByFeatureScore(Arrays.asList(new String[]
+                { type }));
+      }
+
+    });
+    JMenuItem dens = new JMenuItem(
+            MessageManager.getString("label.sort_by_density"));
+    dens.addActionListener(new ActionListener()
+    {
+
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        me.af.avc
+                .sortAlignmentByFeatureDensity(Arrays.asList(new String[]
+                { type }));
+      }
+
+    });
+    men.add(dens);
+
+    JMenuItem selCols = new JMenuItem(
+            MessageManager.getString("label.select_columns_containing"));
+    selCols.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent arg0)
+      {
+        fr.ap.alignFrame.avc.markColumnsContainingFeatures(false, false,
+                false, type);
+      }
+    });
+    JMenuItem clearCols = new JMenuItem(MessageManager
+            .getString("label.select_columns_not_containing"));
+    clearCols.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent arg0)
+      {
+        fr.ap.alignFrame.avc.markColumnsContainingFeatures(true, false,
+                false, type);
+      }
+    });
+    JMenuItem hideCols = new JMenuItem(
+            MessageManager.getString("label.hide_columns_containing"));
+    hideCols.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent arg0)
+      {
+        fr.ap.alignFrame.hideFeatureColumns(type, true);
+      }
+    });
+    JMenuItem hideOtherCols = new JMenuItem(
+            MessageManager.getString("label.hide_columns_not_containing"));
+    hideOtherCols.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent arg0)
+      {
+        fr.ap.alignFrame.hideFeatureColumns(type, false);
+      }
+    });
+    men.add(selCols);
+    men.add(clearCols);
+    men.add(hideCols);
+    men.add(hideOtherCols);
+    men.show(table, x, y);
+  }
+
+  @Override
+  synchronized public void discoverAllFeatureData()
+  {
+    Set<String> allGroups = new HashSet<>();
+    AlignmentI alignment = af.getViewport().getAlignment();
+
+    for (int i = 0; i < alignment.getHeight(); i++)
+    {
+      SequenceI seq = alignment.getSequenceAt(i);
+      for (String group : seq.getFeatures().getFeatureGroups(true))
+      {
+        if (group != null && !allGroups.contains(group))
+        {
+          allGroups.add(group);
+          checkGroupState(group);
+        }
+      }
+    }
+
+    resetTable(null);
+
+    validate();
+  }
+
+  /**
+   * Synchronise gui group list and check visibility of group
+   * 
+   * @param group
+   * @return true if group is visible
+   */
+  private boolean checkGroupState(String group)
+  {
+    boolean visible = fr.checkGroupVisibility(group, true);
+
+    for (int g = 0; g < groupPanel.getComponentCount(); g++)
+    {
+      if (((JCheckBox) groupPanel.getComponent(g)).getText().equals(group))
+      {
+        ((JCheckBox) groupPanel.getComponent(g)).setSelected(visible);
+        return visible;
+      }
+    }
+
+    final String grp = group;
+    final JCheckBox check = new JCheckBox(group, visible);
+    check.setFont(new Font("Serif", Font.BOLD, 12));
+    check.setToolTipText(group);
+    check.addItemListener(new ItemListener()
+    {
+      @Override
+      public void itemStateChanged(ItemEvent evt)
+      {
+        fr.setGroupVisibility(check.getText(), check.isSelected());
+        resetTable(new String[] { grp });
+        af.alignPanel.paintAlignment(true, true);
+      }
+    });
+    groupPanel.add(check);
+    return visible;
+  }
+
+  synchronized void resetTable(String[] groupChanged)
+  {
+    if (resettingTable)
+    {
+      return;
+    }
+    resettingTable = true;
+    typeWidth = new Hashtable<>();
+    // TODO: change avWidth calculation to 'per-sequence' average and use long
+    // rather than float
+
+    Set<String> displayableTypes = new HashSet<>();
+    Set<String> foundGroups = new HashSet<>();
+
+    /*
+     * determine which feature types may be visible depending on 
+     * which groups are selected, and recompute average width data
+     */
+    for (int i = 0; i < af.getViewport().getAlignment().getHeight(); i++)
+    {
+
+      SequenceI seq = af.getViewport().getAlignment().getSequenceAt(i);
+
+      /*
+       * get the sequence's groups for positional features
+       * and keep track of which groups are visible
+       */
+      Set<String> groups = seq.getFeatures().getFeatureGroups(true);
+      Set<String> visibleGroups = new HashSet<>();
+      for (String group : groups)
+      {
+        if (group == null || checkGroupState(group))
+        {
+          visibleGroups.add(group);
+        }
+      }
+      foundGroups.addAll(groups);
+
+      /*
+       * get distinct feature types for visible groups
+       * record distinct visible types, and their count and total length
+       */
+      Set<String> types = seq.getFeatures().getFeatureTypesForGroups(true,
+              visibleGroups.toArray(new String[visibleGroups.size()]));
+      for (String type : types)
+      {
+        displayableTypes.add(type);
+        float[] avWidth = typeWidth.get(type);
+        if (avWidth == null)
+        {
+          avWidth = new float[2];
+          typeWidth.put(type, avWidth);
+        }
+        // todo this could include features with a non-visible group
+        // - do we greatly care?
+        // todo should we include non-displayable features here, and only
+        // update when features are added?
+        avWidth[0] += seq.getFeatures().getFeatureCount(true, type);
+        avWidth[1] += seq.getFeatures().getTotalFeatureLength(type);
+      }
+    }
+
+    Object[][] data = new Object[displayableTypes.size()][COLUMN_COUNT];
+    int dataIndex = 0;
+
+    if (fr.hasRenderOrder())
+    {
+      if (!handlingUpdate)
+      {
+        fr.findAllFeatures(groupChanged != null); // prod to update
+        // colourschemes. but don't
+        // affect display
+        // First add the checks in the previous render order,
+        // in case the window has been closed and reopened
+      }
+      List<String> frl = fr.getRenderOrder();
+      for (int ro = frl.size() - 1; ro > -1; ro--)
+      {
+        String type = frl.get(ro);
+
+        if (!displayableTypes.contains(type))
+        {
+          continue;
+        }
+
+        data[dataIndex][TYPE_COLUMN] = type;
+        data[dataIndex][COLOUR_COLUMN] = fr.getFeatureStyle(type);
+        FeatureMatcherSetI featureFilter = fr.getFeatureFilter(type);
+        data[dataIndex][FILTER_COLUMN] = featureFilter == null
+                ? new FeatureMatcherSet()
+                : featureFilter;
+        data[dataIndex][SHOW_COLUMN] = new Boolean(
+                af.getViewport().getFeaturesDisplayed().isVisible(type));
+        dataIndex++;
+        displayableTypes.remove(type);
+      }
+    }
+
+    /*
+     * process any extra features belonging only to 
+     * a group which was just selected
+     */
+    while (!displayableTypes.isEmpty())
+    {
+      String type = displayableTypes.iterator().next();
+      data[dataIndex][TYPE_COLUMN] = type;
+
+      data[dataIndex][COLOUR_COLUMN] = fr.getFeatureStyle(type);
+      if (data[dataIndex][COLOUR_COLUMN] == null)
+      {
+        // "Colour has been updated in another view!!"
+        fr.clearRenderOrder();
+        return;
+      }
+      FeatureMatcherSetI featureFilter = fr.getFeatureFilter(type);
+      data[dataIndex][FILTER_COLUMN] = featureFilter == null
+              ? new FeatureMatcherSet()
+              : featureFilter;
+      data[dataIndex][SHOW_COLUMN] = new Boolean(true);
+      dataIndex++;
+      displayableTypes.remove(type);
+    }
+
+    if (originalData == null)
+    {
+      originalData = new Object[data.length][COLUMN_COUNT];
+      for (int i = 0; i < data.length; i++)
+      {
+        System.arraycopy(data[i], 0, originalData[i], 0, COLUMN_COUNT);
+      }
+    }
+    else
+    {
+      updateOriginalData(data);
+    }
+
+    table.setModel(new FeatureTableModel(data));
+    table.getColumnModel().getColumn(0).setPreferredWidth(200);
+
+    groupPanel.setLayout(
+            new GridLayout(fr.getFeatureGroupsSize() / 4 + 1, 4));
+    pruneGroups(foundGroups);
+    groupPanel.validate();
+
+    updateFeatureRenderer(data, groupChanged != null);
+    resettingTable = false;
+  }
+
+  /**
+   * Updates 'originalData' (used for restore on Cancel) if we detect that changes
+   * have been made outwith this dialog
+   * <ul>
+   * <li>a new feature type added (and made visible)</li>
+   * <li>a feature colour changed (in the Amend Features dialog)</li>
+   * </ul>
+   * 
+   * @param foundData
+   */
+  protected void updateOriginalData(Object[][] foundData)
+  {
+    // todo LinkedHashMap instead of Object[][] would be nice
+
+    Object[][] currentData = ((FeatureTableModel) table.getModel())
+            .getData();
+    for (Object[] row : foundData)
+    {
+      String type = (String) row[TYPE_COLUMN];
+      boolean found = false;
+      for (Object[] current : currentData)
+      {
+        if (type.equals(current[TYPE_COLUMN]))
+        {
+          found = true;
+          /*
+           * currently dependent on object equality here;
+           * really need an equals method on FeatureColour
+           */
+          if (!row[COLOUR_COLUMN].equals(current[COLOUR_COLUMN]))
+          {
+            /*
+             * feature colour has changed externally - update originalData
+             */
+            for (Object[] original : originalData)
+            {
+              if (type.equals(original[TYPE_COLUMN]))
+              {
+                original[COLOUR_COLUMN] = row[COLOUR_COLUMN];
+                break;
+              }
+            }
+          }
+          break;
+        }
+      }
+      if (!found)
+      {
+        /*
+         * new feature detected - add to original data (on top)
+         */
+        Object[][] newData = new Object[originalData.length
+                + 1][COLUMN_COUNT];
+        for (int i = 0; i < originalData.length; i++)
+        {
+          System.arraycopy(originalData[i], 0, newData[i + 1], 0,
+                  COLUMN_COUNT);
+        }
+        newData[0] = row;
+        originalData = newData;
+      }
+    }
+  }
+
+  /**
+   * Remove from the groups panel any checkboxes for groups that are not in the
+   * foundGroups set. This enables removing a group from the display when the last
+   * feature in that group is deleted.
+   * 
+   * @param foundGroups
+   */
+  protected void pruneGroups(Set<String> foundGroups)
+  {
+    for (int g = 0; g < groupPanel.getComponentCount(); g++)
+    {
+      JCheckBox checkbox = (JCheckBox) groupPanel.getComponent(g);
+      if (!foundGroups.contains(checkbox.getText()))
+      {
+        groupPanel.remove(checkbox);
+      }
+    }
+  }
+
+  /**
+   * reorder data based on the featureRenderers global priority list.
+   * 
+   * @param data
+   */
+  private void ensureOrder(Object[][] data)
+  {
+    boolean sort = false;
+    float[] order = new float[data.length];
+    for (int i = 0; i < order.length; i++)
+    {
+      order[i] = fr.getOrder(data[i][0].toString());
+      if (order[i] < 0)
+      {
+        order[i] = fr.setOrder(data[i][0].toString(), i / order.length);
+      }
+      if (i > 1)
+      {
+        sort = sort || order[i - 1] > order[i];
+      }
+    }
+    if (sort)
+    {
+      jalview.util.QuickSort.sort(order, data);
+    }
+  }
+
+  /**
+   * Offers a file chooser dialog, and then loads the feature colours and
+   * filters from file in XML format and unmarshals to Jalview feature settings
+   */
+  void load()
+  {
+    JalviewFileChooser chooser = new JalviewFileChooser("fc",
+            SEQUENCE_FEATURE_COLOURS);
+    chooser.setFileView(new JalviewFileView());
+    chooser.setDialogTitle(
+            MessageManager.getString("label.load_feature_colours"));
+    chooser.setToolTipText(MessageManager.getString("action.load"));
+
+    int value = chooser.showOpenDialog(this);
+
+    if (value == JalviewFileChooser.APPROVE_OPTION)
+    {
+      File file = chooser.getSelectedFile();
+      load(file);
+    }
+  }
+
+  /**
+   * Loads feature colours and filters from XML stored in the given file
+   * 
+   * @param file
+   */
+  void load(File file)
+  {
+    try
+    {
+      InputStreamReader in = new InputStreamReader(
+              new FileInputStream(file), "UTF-8");
+
+      JAXBContext jc = JAXBContext
+              .newInstance("jalview.xml.binding.jalview");
+      javax.xml.bind.Unmarshaller um = jc.createUnmarshaller();
+      XMLStreamReader streamReader = XMLInputFactory.newInstance()
+              .createXMLStreamReader(in);
+      JAXBElement<JalviewUserColours> jbe = um.unmarshal(streamReader,
+              JalviewUserColours.class);
+      JalviewUserColours jucs = jbe.getValue();
+
+      // JalviewUserColours jucs = JalviewUserColours.unmarshal(in);
+
+      /*
+       * load feature colours
+       */
+      for (int i = jucs.getColour().size() - 1; i >= 0; i--)
+      {
+        Colour newcol = jucs.getColour().get(i);
+        FeatureColourI colour = jalview.project.Jalview2XML
+                .parseColour(newcol);
+        fr.setColour(newcol.getName(), colour);
+        fr.setOrder(newcol.getName(), i / (float) jucs.getColour().size());
+      }
+
+      /*
+       * load feature filters; loaded filters will replace any that are
+       * currently defined, other defined filters are left unchanged 
+       */
+      for (int i = 0; i < jucs.getFilter().size(); i++)
+      {
+        Filter filterModel = jucs.getFilter().get(i);
+        String featureType = filterModel.getFeatureType();
+        FeatureMatcherSetI filter = jalview.project.Jalview2XML
+                .parseFilter(featureType, filterModel.getMatcherSet());
+        if (!filter.isEmpty())
+        {
+          fr.setFeatureFilter(featureType, filter);
+        }
+      }
+
+      /*
+       * update feature settings table
+       */
+      if (table != null)
+      {
+        resetTable(null);
+        Object[][] data = ((FeatureTableModel) table.getModel())
+                .getData();
+        ensureOrder(data);
+        updateFeatureRenderer(data, false);
+        table.repaint();
+      }
+    } catch (Exception ex)
+    {
+      System.out.println("Error loading User Colour File\n" + ex);
+    }
+  }
+
+  /**
+   * Offers a file chooser dialog, and then saves the current feature colours
+   * and any filters to the selected file in XML format
+   */
+  void save()
+  {
+    JalviewFileChooser chooser = new JalviewFileChooser("fc",
+            SEQUENCE_FEATURE_COLOURS);
+    chooser.setFileView(new JalviewFileView());
+    chooser.setDialogTitle(
+            MessageManager.getString("label.save_feature_colours"));
+    chooser.setToolTipText(MessageManager.getString("action.save"));
+
+    int value = chooser.showSaveDialog(this);
+
+    if (value == JalviewFileChooser.APPROVE_OPTION)
+    {
+      save(chooser.getSelectedFile());
+    }
+  }
+
+  /**
+   * Saves feature colours and filters to the given file
+   * 
+   * @param file
+   */
+  void save(File file)
+  {
+    JalviewUserColours ucs = new JalviewUserColours();
+    ucs.setSchemeName("Sequence Features");
+    try
+    {
+      PrintWriter out = new PrintWriter(new OutputStreamWriter(
+              new FileOutputStream(file), "UTF-8"));
+
+      /*
+       * sort feature types by colour order, from 0 (highest)
+       * to 1 (lowest)
+       */
+      Set<String> fr_colours = fr.getAllFeatureColours();
+      String[] sortedTypes = fr_colours
+              .toArray(new String[fr_colours.size()]);
+      Arrays.sort(sortedTypes, new Comparator<String>()
+      {
+        @Override
+        public int compare(String type1, String type2)
+        {
+          return Float.compare(fr.getOrder(type1), fr.getOrder(type2));
+        }
+      });
+
+      /*
+       * save feature colours
+       */
+      for (String featureType : sortedTypes)
+      {
+        FeatureColourI fcol = fr.getFeatureStyle(featureType);
+        Colour col = jalview.project.Jalview2XML.marshalColour(featureType,
+                fcol);
+        ucs.getColour().add(col);
+      }
+
+      /*
+       * save any feature filters
+       */
+      for (String featureType : sortedTypes)
+      {
+        FeatureMatcherSetI filter = fr.getFeatureFilter(featureType);
+        if (filter != null && !filter.isEmpty())
+        {
+          Iterator<FeatureMatcherI> iterator = filter.getMatchers().iterator();
+          FeatureMatcherI firstMatcher = iterator.next();
+          jalview.xml.binding.jalview.FeatureMatcherSet ms = jalview.project.Jalview2XML
+                  .marshalFilter(firstMatcher, iterator,
+                  filter.isAnded());
+          Filter filterModel = new Filter();
+          filterModel.setFeatureType(featureType);
+          filterModel.setMatcherSet(ms);
+          ucs.getFilter().add(filterModel);
+        }
+      }
+      JAXBContext jaxbContext = JAXBContext
+              .newInstance(JalviewUserColours.class);
+      Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
+      jaxbMarshaller.marshal(
+              new ObjectFactory().createJalviewUserColours(ucs), out);
+
+      // jaxbMarshaller.marshal(object, pout);
+      // marshaller.marshal(object);
+      out.flush();
+
+      // ucs.marshal(out);
+      out.close();
+    } catch (Exception ex)
+    {
+      ex.printStackTrace();
+    }
+  }
+
+  public void invertSelection()
+  {
+    Object[][] data = ((FeatureTableModel) table.getModel()).getData();
+    for (int i = 0; i < data.length; i++)
+    {
+      data[i][SHOW_COLUMN] = !(Boolean) data[i][SHOW_COLUMN];
+    }
+    updateFeatureRenderer(data, true);
+    table.repaint();
+  }
+
+  public void orderByAvWidth()
+  {
+    if (table == null || table.getModel() == null)
+    {
+      return;
+    }
+    Object[][] data = ((FeatureTableModel) table.getModel()).getData();
+    float[] width = new float[data.length];
+    float[] awidth;
+    float max = 0;
+
+    for (int i = 0; i < data.length; i++)
+    {
+      awidth = typeWidth.get(data[i][TYPE_COLUMN]);
+      if (awidth[0] > 0)
+      {
+        width[i] = awidth[1] / awidth[0];// *awidth[0]*awidth[2]; - better
+        // weight - but have to make per
+        // sequence, too (awidth[2])
+        // if (width[i]==1) // hack to distinguish single width sequences.
+      }
+      else
+      {
+        width[i] = 0;
+      }
+      if (max < width[i])
+      {
+        max = width[i];
+      }
+    }
+    boolean sort = false;
+    for (int i = 0; i < width.length; i++)
+    {
+      // awidth = (float[]) typeWidth.get(data[i][0]);
+      if (width[i] == 0)
+      {
+        width[i] = fr.getOrder(data[i][TYPE_COLUMN].toString());
+        if (width[i] < 0)
+        {
+          width[i] = fr.setOrder(data[i][TYPE_COLUMN].toString(),
+                  i / data.length);
+        }
+      }
+      else
+      {
+        width[i] /= max; // normalize
+        fr.setOrder(data[i][TYPE_COLUMN].toString(), width[i]); // store for later
+      }
+      if (i > 0)
+      {
+        sort = sort || width[i - 1] > width[i];
+      }
+    }
+    if (sort)
+    {
+      jalview.util.QuickSort.sort(width, data);
+      // update global priority order
+    }
+
+    updateFeatureRenderer(data, false);
+    table.repaint();
+  }
+
+  public void close()
+  {
+    try
+    {
+      frame.setClosed(true);
+    } catch (Exception exe)
+    {
+    }
+
+  }
+
+  public void updateFeatureRenderer(Object[][] data)
+  {
+    updateFeatureRenderer(data, true);
+  }
+
+  /**
+   * Update the priority order of features; only repaint if this changed the order
+   * of visible features
+   * 
+   * @param data
+   * @param visibleNew
+   */
+  private void updateFeatureRenderer(Object[][] data, boolean visibleNew)
+  {
+    FeatureSettingsBean[] rowData = getTableAsBeans(data);
+
+    if (fr.setFeaturePriority(rowData, visibleNew))
+    {
+      af.alignPanel.paintAlignment(true, true);
+    }
+  }
+
+  /**
+   * Converts table data into an array of data beans
+   */
+  private FeatureSettingsBean[] getTableAsBeans(Object[][] data)
+  {
+    FeatureSettingsBean[] rowData = new FeatureSettingsBean[data.length];
+    for (int i = 0; i < data.length; i++)
+    {
+      String type = (String) data[i][TYPE_COLUMN];
+      FeatureColourI colour = (FeatureColourI) data[i][COLOUR_COLUMN];
+      FeatureMatcherSetI theFilter = (FeatureMatcherSetI) data[i][FILTER_COLUMN];
+      Boolean isShown = (Boolean) data[i][SHOW_COLUMN];
+      rowData[i] = new FeatureSettingsBean(type, colour, theFilter,
+              isShown);
+    }
+    return rowData;
+  }
+
+  private void jbInit() throws Exception
+  {
+    this.setLayout(new BorderLayout());
+
+    JPanel settingsPane = new JPanel();
+    settingsPane.setLayout(new BorderLayout());
+
+    JPanel bigPanel = new JPanel();
+    bigPanel.setLayout(new BorderLayout());
+
+    groupPanel = new JPanel();
+    bigPanel.add(groupPanel, BorderLayout.NORTH);
+
+    JButton invert = new JButton(
+            MessageManager.getString("label.invert_selection"));
+    invert.setFont(JvSwingUtils.getLabelFont());
+    invert.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        invertSelection();
+      }
+    });
+
+    JButton optimizeOrder = new JButton(
+            MessageManager.getString("label.optimise_order"));
+    optimizeOrder.setFont(JvSwingUtils.getLabelFont());
+    optimizeOrder.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        orderByAvWidth();
+      }
+    });
+
+    JButton sortByScore = new JButton(
+            MessageManager.getString("label.seq_sort_by_score"));
+    sortByScore.setFont(JvSwingUtils.getLabelFont());
+    sortByScore.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        af.avc.sortAlignmentByFeatureScore(null);
+      }
+    });
+    JButton sortByDens = new JButton(
+            MessageManager.getString("label.sequence_sort_by_density"));
+    sortByDens.setFont(JvSwingUtils.getLabelFont());
+    sortByDens.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        af.avc.sortAlignmentByFeatureDensity(null);
+      }
+    });
+
+    JButton help = new JButton(MessageManager.getString("action.help"));
+    help.setFont(JvSwingUtils.getLabelFont());
+    help.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        try
+        {
+          Help.showHelpWindow(HelpId.SequenceFeatureSettings);
+        } catch (HelpSetException e1)
+        {
+          e1.printStackTrace();
+        }
+      }
+    });
+    help.setFont(JvSwingUtils.getLabelFont());
+    help.setText(MessageManager.getString("action.help"));
+    help.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        try
+        {
+          Help.showHelpWindow(HelpId.SequenceFeatureSettings);
+        } catch (HelpSetException e1)
+        {
+          e1.printStackTrace();
+        }
+      }
+    });
+
+    JButton cancel = new JButton(MessageManager.getString("action.cancel"));
+    cancel.setFont(JvSwingUtils.getLabelFont());
+    cancel.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        fr.setTransparency(originalTransparency);
+        fr.setFeatureFilters(originalFilters);
+        updateFeatureRenderer(originalData);
+        close();
+      }
+    });
+
+    JButton ok = new JButton(MessageManager.getString("action.ok"));
+    ok.setFont(JvSwingUtils.getLabelFont());
+    ok.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        close();
+      }
+    });
+
+    JButton loadColours = new JButton(
+            MessageManager.getString("label.load_colours"));
+    loadColours.setFont(JvSwingUtils.getLabelFont());
+    loadColours.setToolTipText(
+            MessageManager.getString("label.load_colours_tooltip"));
+    loadColours.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        load();
+      }
+    });
+
+    JButton saveColours = new JButton(
+            MessageManager.getString("label.save_colours"));
+    saveColours.setFont(JvSwingUtils.getLabelFont());
+    saveColours.setToolTipText(
+            MessageManager.getString("label.save_colours_tooltip"));
+    saveColours.addActionListener(new ActionListener()
+    {
+      @Override
+      public void actionPerformed(ActionEvent e)
+      {
+        save();
+      }
+    });
+    transparency.addChangeListener(new ChangeListener()
+    {
+      @Override
+      public void stateChanged(ChangeEvent evt)
+      {
+        if (!inConstruction)
+        {
+          fr.setTransparency((100 - transparency.getValue()) / 100f);
+          af.alignPanel.paintAlignment(true, true);
+        }
+      }
+    });
+
+    transparency.setMaximum(70);
+    transparency.setToolTipText(
+            MessageManager.getString("label.transparency_tip"));
+
+    JPanel transPanel = new JPanel(new GridLayout(1, 2));
+    bigPanel.add(transPanel, BorderLayout.SOUTH);
+
+    JPanel transbuttons = new JPanel(new GridLayout(5, 1));
+    transbuttons.add(optimizeOrder);
+    transbuttons.add(invert);
+    transbuttons.add(sortByScore);
+    transbuttons.add(sortByDens);
+    transbuttons.add(help);
+    transPanel.add(transparency);
+    transPanel.add(transbuttons);
+
+    JPanel buttonPanel = new JPanel();
+    buttonPanel.add(ok);
+    buttonPanel.add(cancel);
+    buttonPanel.add(loadColours);
+    buttonPanel.add(saveColours);
+    bigPanel.add(scrollPane, BorderLayout.CENTER);
+    settingsPane.add(bigPanel, BorderLayout.CENTER);
+    settingsPane.add(buttonPanel, BorderLayout.SOUTH);
+    this.add(settingsPane);
+  }
+
+  /**
+   * Answers a suitable tooltip to show on the colour cell of the table
+   * 
+   * @param fcol
+   * @param withHint
+   *          if true include 'click to edit' and similar text
+   * @return
+   */
+  public static String getColorTooltip(FeatureColourI fcol,
+          boolean withHint)
+  {
+    if (fcol == null)
+    {
+      return null;
+    }
+    if (fcol.isSimpleColour())
+    {
+      return withHint ? BASE_TOOLTIP : null;
+    }
+    String description = fcol.getDescription();
+    description = description.replaceAll("<", "&lt;");
+    description = description.replaceAll(">", "&gt;");
+    StringBuilder tt = new StringBuilder(description);
+    if (withHint)
+    {
+      tt.append("<br>").append(BASE_TOOLTIP).append("</br>");
+    }
+    return JvSwingUtils.wrapTooltip(true, tt.toString());
+  }
+
+  public static void renderGraduatedColor(JLabel comp, FeatureColourI gcol,
+          int w, int h)
+  {
+    boolean thr = false;
+    StringBuilder tx = new StringBuilder();
+  
+    if (gcol.isColourByAttribute())
+    {
+      tx.append(FeatureMatcher
+              .toAttributeDisplayName(gcol.getAttributeName()));
+    }
+    else if (!gcol.isColourByLabel())
+    {
+      tx.append(MessageManager.getString("label.score"));
+    }
+    tx.append(" ");
+    if (gcol.isAboveThreshold())
+    {
+      thr = true;
+      tx.append(">");
+    }
+    if (gcol.isBelowThreshold())
+    {
+      thr = true;
+      tx.append("<");
+    }
+    if (gcol.isColourByLabel())
+    {
+      if (thr)
+      {
+        tx.append(" ");
+      }
+      if (!gcol.isColourByAttribute())
+      {
+        tx.append("Label");
+      }
+      comp.setIcon(null);
+    }
+    else
+    {
+      Color newColor = gcol.getMaxColour();
+      comp.setBackground(newColor);
+      // System.err.println("Width is " + w / 2);
+      Icon ficon = new FeatureIcon(gcol, comp.getBackground(), w, h, thr);
+      comp.setIcon(ficon);
+      // tt+="RGB value: Max (" + newColor.getRed() + ", "
+      // + newColor.getGreen() + ", " + newColor.getBlue()
+      // + ")\nMin (" + minCol.getRed() + ", " + minCol.getGreen()
+      // + ", " + minCol.getBlue() + ")");
+    }
+    comp.setHorizontalAlignment(SwingConstants.CENTER);
+    comp.setText(tx.toString());
+  }
+
+  // ///////////////////////////////////////////////////////////////////////
+  // http://java.sun.com/docs/books/tutorial/uiswing/components/table.html
+  // ///////////////////////////////////////////////////////////////////////
+  class FeatureTableModel extends AbstractTableModel
+  {
+    private String[] columnNames = {
+        MessageManager.getString("label.feature_type"),
+        MessageManager.getString("action.colour"),
+        MessageManager.getString("label.configuration"),
+        MessageManager.getString("label.show") };
+
+    private Object[][] data;
+
+    FeatureTableModel(Object[][] data)
+    {
+      this.data = data;
+    }
+
+    public Object[][] getData()
+    {
+      return data;
+    }
+
+    public void setData(Object[][] data)
+    {
+      this.data = data;
+    }
+
+    @Override
+    public int getColumnCount()
+    {
+      return columnNames.length;
+    }
+
+    public Object[] getRow(int row)
+    {
+      return data[row];
+    }
+
+    @Override
+    public int getRowCount()
+    {
+      return data.length;
+    }
+
+    @Override
+    public String getColumnName(int col)
+    {
+      return columnNames[col];
+    }
+
+    @Override
+    public Object getValueAt(int row, int col)
+    {
+      return data[row][col];
+    }
+
+    /**
+     * Answers the class of the object in column c of the first row of the table
+     */
+    @Override
+    public Class<?> getColumnClass(int c)
+    {
+      Object v = getValueAt(0, c);
+      return v == null ? null : v.getClass();
+    }
+
+    @Override
+    public boolean isCellEditable(int row, int col)
+    {
+      return col == 0 ? false : true;
+    }
+
+    @Override
+    public void setValueAt(Object value, int row, int col)
+    {
+      data[row][col] = value;
+      fireTableCellUpdated(row, col);
+      updateFeatureRenderer(data);
+    }
+
+  }
+
+  class ColorRenderer extends JLabel implements TableCellRenderer
+  {
+    Border unselectedBorder = null;
+
+    Border selectedBorder = null;
+
+    public ColorRenderer()
+    {
+      setOpaque(true); // MUST do this for background to show up.
+      setHorizontalTextPosition(SwingConstants.CENTER);
+      setVerticalTextPosition(SwingConstants.CENTER);
+    }
+
+    @Override
+    public Component getTableCellRendererComponent(JTable tbl, Object color,
+            boolean isSelected, boolean hasFocus, int row, int column)
+    {
+      FeatureColourI cellColour = (FeatureColourI) color;
+      setOpaque(true);
+      setBackground(tbl.getBackground());
+      if (!cellColour.isSimpleColour())
+      {
+        Rectangle cr = tbl.getCellRect(row, column, false);
+        FeatureSettings.renderGraduatedColor(this, cellColour,
+                (int) cr.getWidth(), (int) cr.getHeight());
+      }
+      else
+      {
+        this.setText("");
+        this.setIcon(null);
+        setBackground(cellColour.getColour());
+      }
+      if (isSelected)
+      {
+        if (selectedBorder == null)
+        {
+          selectedBorder = BorderFactory.createMatteBorder(2, 5, 2, 5,
+                  tbl.getSelectionBackground());
+        }
+        setBorder(selectedBorder);
+      }
+      else
+      {
+        if (unselectedBorder == null)
+        {
+          unselectedBorder = BorderFactory.createMatteBorder(2, 5, 2, 5,
+                  tbl.getBackground());
+        }
+        setBorder(unselectedBorder);
+      }
+
+      return this;
+    }
+  }
+
+  class FilterRenderer extends JLabel implements TableCellRenderer
+  {
+    javax.swing.border.Border unselectedBorder = null;
+
+    javax.swing.border.Border selectedBorder = null;
+
+    public FilterRenderer()
+    {
+      setOpaque(true); // MUST do this for background to show up.
+      setHorizontalTextPosition(SwingConstants.CENTER);
+      setVerticalTextPosition(SwingConstants.CENTER);
+    }
+
+    @Override
+    public Component getTableCellRendererComponent(JTable tbl,
+            Object filter, boolean isSelected, boolean hasFocus, int row,
+            int column)
+    {
+      FeatureMatcherSetI theFilter = (FeatureMatcherSetI) filter;
+      setOpaque(true);
+      String asText = theFilter.toString();
+      setBackground(tbl.getBackground());
+      this.setText(asText);
+      this.setIcon(null);
+
+      if (isSelected)
+      {
+        if (selectedBorder == null)
+        {
+          selectedBorder = BorderFactory.createMatteBorder(2, 5, 2, 5,
+                  tbl.getSelectionBackground());
+        }
+        setBorder(selectedBorder);
+      }
+      else
+      {
+        if (unselectedBorder == null)
+        {
+          unselectedBorder = BorderFactory.createMatteBorder(2, 5, 2, 5,
+                  tbl.getBackground());
+        }
+        setBorder(unselectedBorder);
+      }
+
+      return this;
+    }
+  }
+
+  /**
+   * update comp using rendering settings from gcol
+   * 
+   * @param comp
+   * @param gcol
+   */
+  public static void renderGraduatedColor(JLabel comp, FeatureColourI gcol)
+  {
+    int w = comp.getWidth(), h = comp.getHeight();
+    if (w < 20)
+    {
+      w = (int) comp.getPreferredSize().getWidth();
+      h = (int) comp.getPreferredSize().getHeight();
+      if (w < 20)
+      {
+        w = 80;
+        h = 12;
+      }
+    }
+    renderGraduatedColor(comp, gcol, w, h);
+  }
+
+  class ColorEditor extends AbstractCellEditor
+          implements TableCellEditor, ActionListener
+  {
+    FeatureSettings me;
+
+    FeatureColourI currentColor;
+
+    FeatureTypeSettings chooser;
+
+    String type;
+
+    JButton button;
+
+    JColorChooser colorChooser;
+
+    JDialog dialog;
+
+    protected static final String EDIT = "edit";
+
+    int rowSelected = 0;
+
+    public ColorEditor(FeatureSettings me)
+    {
+      this.me = me;
+      // Set up the editor (from the table's point of view),
+      // which is a button.
+      // This button brings up the color chooser dialog,
+      // which is the editor from the user's point of view.
+      button = new JButton();
+      button.setActionCommand(EDIT);
+      button.addActionListener(this);
+      button.setBorderPainted(false);
+      // Set up the dialog that the button brings up.
+      colorChooser = new JColorChooser();
+      dialog = JColorChooser.createDialog(button,
+              MessageManager.getString("label.select_colour"), true, // modal
+              colorChooser, this, // OK button handler
+              null); // no CANCEL button handler
+    }
+
+    /**
+     * Handles events from the editor button and from the dialog's OK button.
+     */
+    @Override
+    public void actionPerformed(ActionEvent e)
+    {
+      // todo test e.getSource() instead here
+      if (EDIT.equals(e.getActionCommand()))
+      {
+        // The user has clicked the cell, so
+        // bring up the dialog.
+        if (currentColor.isSimpleColour())
+        {
+          // bring up simple color chooser
+          button.setBackground(currentColor.getColour());
+          colorChooser.setColor(currentColor.getColour());
+          dialog.setVisible(true);
+        }
+        else
+        {
+          // bring up graduated chooser.
+          chooser = new FeatureTypeSettings(me.fr, type);
+          /**
+           * @j2sNative
+           */
+          {
+            chooser.setRequestFocusEnabled(true);
+            chooser.requestFocus();
+          }
+          chooser.addActionListener(this);
+          // Make the renderer reappear.
+          fireEditingStopped();
+        }
+      }
+      else
+      {
+        if (currentColor.isSimpleColour())
+        {
+          /*
+           * read off colour picked in colour chooser after OK pressed
+           */
+          currentColor = new FeatureColour(colorChooser.getColor());
+          me.table.setValueAt(currentColor, rowSelected, COLOUR_COLUMN);
+        }
+        else
+        {
+          /*
+           * after OK in variable colour dialog, any changes to colour 
+           * (or filters!) are already set in FeatureRenderer, so just
+           * update table data without triggering updateFeatureRenderer
+           */
+          currentColor = fr.getFeatureColours().get(type);
+          FeatureMatcherSetI currentFilter = me.fr.getFeatureFilter(type);
+          if (currentFilter == null)
+          {
+            currentFilter = new FeatureMatcherSet();
+          }
+          Object[] data = ((FeatureTableModel) table.getModel())
+                  .getData()[rowSelected];
+          data[COLOUR_COLUMN] = currentColor;
+          data[FILTER_COLUMN] = currentFilter;
+        }
+        fireEditingStopped();
+        me.table.validate();
+      }
+    }
+
+    // Implement the one CellEditor method that AbstractCellEditor doesn't.
+    @Override
+    public Object getCellEditorValue()
+    {
+      return currentColor;
+    }
+
+    // Implement the one method defined by TableCellEditor.
+    @Override
+    public Component getTableCellEditorComponent(JTable theTable, Object value,
+            boolean isSelected, int row, int column)
+    {
+      currentColor = (FeatureColourI) value;
+      this.rowSelected = row;
+      type = me.table.getValueAt(row, TYPE_COLUMN).toString();
+      button.setOpaque(true);
+      button.setBackground(me.getBackground());
+      if (!currentColor.isSimpleColour())
+      {
+        JLabel btn = new JLabel();
+        btn.setSize(button.getSize());
+        FeatureSettings.renderGraduatedColor(btn, currentColor);
+        button.setBackground(btn.getBackground());
+        button.setIcon(btn.getIcon());
+        button.setText(btn.getText());
+      }
+      else
+      {
+        button.setText("");
+        button.setIcon(null);
+        button.setBackground(currentColor.getColour());
+      }
+      return button;
+    }
+  }
+
+  /**
+   * The cell editor for the Filter column. It displays the text of any filters
+   * for the feature type in that row (in full as a tooltip, possible abbreviated
+   * as display text). On click in the cell, opens the Feature Display Settings
+   * dialog at the Filters tab.
+   */
+  class FilterEditor extends AbstractCellEditor
+          implements TableCellEditor, ActionListener
+  {
+    FeatureSettings me;
+
+    FeatureMatcherSetI currentFilter;
+
+    Point lastLocation;
+
+    String type;
+
+    JButton button;
+
+    protected static final String EDIT = "edit";
+
+    int rowSelected = 0;
+
+    public FilterEditor(FeatureSettings me)
+    {
+      this.me = me;
+      button = new JButton();
+      button.setActionCommand(EDIT);
+      button.addActionListener(this);
+      button.setBorderPainted(false);
+    }
+
+    /**
+     * Handles events from the editor button
+     */
+    @Override
+    public void actionPerformed(ActionEvent e)
+    {
+      if (button == e.getSource())
+      {
+        FeatureTypeSettings chooser = new FeatureTypeSettings(me.fr, type);
+        chooser.addActionListener(this);
+        chooser.setRequestFocusEnabled(true);
+        chooser.requestFocus();
+        if (lastLocation != null)
+        {
+          // todo open at its last position on screen
+          chooser.setBounds(lastLocation.x, lastLocation.y,
+                  chooser.getWidth(), chooser.getHeight());
+          chooser.validate();
+        }
+        fireEditingStopped();
+      }
+      else if (e.getSource() instanceof Component)
+      {
+
+        /*
+         * after OK in variable colour dialog, any changes to filter
+         * (or colours!) are already set in FeatureRenderer, so just
+         * update table data without triggering updateFeatureRenderer
+         */
+        FeatureColourI currentColor = fr.getFeatureColours().get(type);
+        currentFilter = me.fr.getFeatureFilter(type);
+        if (currentFilter == null)
+        {
+          currentFilter = new FeatureMatcherSet();
+        }
+        Object[] data = ((FeatureTableModel) table.getModel())
+                .getData()[rowSelected];
+        data[COLOUR_COLUMN] = currentColor;
+        data[FILTER_COLUMN] = currentFilter;
+        fireEditingStopped();
+        me.table.validate();
+      }
+    }
+
+    @Override
+    public Object getCellEditorValue()
+    {
+      return currentFilter;
+    }
+
+    @Override
+    public Component getTableCellEditorComponent(JTable theTable, Object value,
+            boolean isSelected, int row, int column)
+    {
+      currentFilter = (FeatureMatcherSetI) value;
+      this.rowSelected = row;
+      type = me.table.getValueAt(row, TYPE_COLUMN).toString();
+      button.setOpaque(true);
+      button.setBackground(me.getBackground());
+      button.setText(currentFilter.toString());
+      button.setIcon(null);
+      return button;
+    }
+  }
+}
+
+class FeatureIcon implements Icon
+{
+  FeatureColourI gcol;
+
+  Color backg;
+
+  boolean midspace = false;
+
+  int width = 50, height = 20;
+
+  int s1, e1; // start and end of midpoint band for thresholded symbol
+
+  Color mpcolour = Color.white;
+
+  FeatureIcon(FeatureColourI gfc, Color bg, int w, int h, boolean mspace)
+  {
+    gcol = gfc;
+    backg = bg;
+    width = w;
+    height = h;
+    midspace = mspace;
+    if (midspace)
+    {
+      s1 = width / 3;
+      e1 = s1 * 2;
+    }
+    else
+    {
+      s1 = width / 2;
+      e1 = s1;
+    }
+  }
+
+  @Override
+  public int getIconWidth()
+  {
+    return width;
+  }
+
+  @Override
+  public int getIconHeight()
+  {
+    return height;
+  }
+
+  @Override
+  public void paintIcon(Component c, Graphics g, int x, int y)
+  {
+
+    if (gcol.isColourByLabel())
+    {
+      g.setColor(backg);
+      g.fillRect(0, 0, width, height);
+      // need an icon here.
+      g.setColor(gcol.getMaxColour());
+
+      g.setFont(new Font("Verdana", Font.PLAIN, 9));
+
+      // g.setFont(g.getFont().deriveFont(
+      // AffineTransform.getScaleInstance(
+      // width/g.getFontMetrics().stringWidth("Label"),
+      // height/g.getFontMetrics().getHeight())));
+
+      g.drawString(MessageManager.getString("label.label"), 0, 0);
+
+    }
+    else
+    {
+      Color minCol = gcol.getMinColour();
+      g.setColor(minCol);
+      g.fillRect(0, 0, s1, height);
+      if (midspace)
+      {
+        g.setColor(Color.white);
+        g.fillRect(s1, 0, e1 - s1, height);
+      }
+      g.setColor(gcol.getMaxColour());
+      g.fillRect(0, e1, width - e1, height);
+    }
+  }
+}