Further tweaks to get tests passing
[jalview.git] / src / jalview / io / JalviewFileChooser.java
index d44275a..e4317bd 100755 (executable)
-/*\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
-/*///////////////////////////////////////////////////////////////////\r
-// This file was taken from java forum\r
-// Re: JFileChooser functioning like normal Windows Apps FileChooser\r
-// Author: ddanimal\r
-// http://forum.java.sun.com/thread.jspa?forumID=57&threadID=327712\r
-*/\r
-\r
-//////////////////////////////////////////////////////////////////\r
-package jalview.io;\r
-\r
-import java.awt.*;\r
-import java.awt.event.*;\r
-\r
-import java.io.*;\r
-\r
-import java.util.*;\r
-\r
-import javax.swing.*;\r
-import javax.swing.plaf.*;\r
-import javax.swing.plaf.basic.*;\r
-import javax.swing.plaf.metal.*;\r
-import javax.swing.table.*;\r
-\r
-\r
-public class JalviewFileChooser extends JFileChooser {\r
-    private static final int COLUMN_FILENAME = 0;\r
-    private static final int COLUMN_FILESIZE = 1;\r
-    private static final int COLUMN_FILETYPE = 2;\r
-    private static final int COLUMN_FILEDATE = 3;\r
-    private static final int COLUMN_FILEATTR = 4;\r
-    private static final int COLUMN_COLCOUNT = 5;\r
-    private static String[] COLUMNS = null;\r
-\r
-    public JalviewFileChooser(String dir, String[] suffix, String[] desc,\r
-        String selected) {\r
-        super(dir);\r
-\r
-        JalviewFileFilter chosen = null;\r
-\r
-        for (int i = 0; i < suffix.length; i++) {\r
-            JalviewFileFilter jvf = new JalviewFileFilter(suffix[i], desc[i]);\r
-            addChoosableFileFilter(jvf);\r
-\r
-            if ((selected != null) && selected.equalsIgnoreCase(desc[i])) {\r
-                chosen = jvf;\r
-            }\r
-        }\r
-\r
-        if (chosen != null) {\r
-            setFileFilter(chosen);\r
-        }\r
-\r
-        initColumns();\r
-    }\r
-\r
-    public JalviewFileChooser(String dir) {\r
-        super(dir);\r
-        initColumns();\r
-    }\r
-\r
-    public String getSelectedFormat() {\r
-        String format = getFileFilter().getDescription();\r
-\r
-        if (format.toUpperCase().startsWith("JALVIEW")) {\r
-            format = "Jalview";\r
-        } else if (format.toUpperCase().startsWith("FASTA")) {\r
-            format = "FASTA";\r
-        } else if (format.toUpperCase().startsWith("MSF")) {\r
-            format = "MSF";\r
-        } else if (format.toUpperCase().startsWith("CLUSTAL")) {\r
-            format = "CLUSTAL";\r
-        } else if (format.toUpperCase().startsWith("BLC")) {\r
-            format = "BLC";\r
-        } else if (format.toUpperCase().startsWith("PIR")) {\r
-            format = "PIR";\r
-        } else if (format.toUpperCase().startsWith("PFAM")) {\r
-            format = "PFAM";\r
-        }\r
-\r
-        return format;\r
-    }\r
-\r
-    public int showSaveDialog(Component parent) throws HeadlessException {\r
-        setDialogType(SAVE_DIALOG);\r
-\r
-        int ret = showDialog(parent, null);\r
-\r
-        if (getFileFilter() instanceof JalviewFileFilter) {\r
-            JalviewFileFilter jvf = (JalviewFileFilter) getFileFilter();\r
-\r
-            if (!jvf.accept(getSelectedFile())) {\r
-                String withExtension = getSelectedFile() + "." +\r
-                    jvf.getAcceptableExtension();\r
-                setSelectedFile(new File(withExtension));\r
-            }\r
-        }\r
-\r
-        if ((ret == JalviewFileChooser.APPROVE_OPTION) &&\r
-                getSelectedFile().exists()) {\r
-            int confirm = JOptionPane.showConfirmDialog(parent,\r
-                    "Overwrite existing file?", "File exists",\r
-                    JOptionPane.YES_NO_OPTION);\r
-\r
-            if (confirm != JOptionPane.YES_OPTION) {\r
-                ret = this.CANCEL_OPTION;\r
-            }\r
-        }\r
-\r
-        return ret;\r
-    }\r
-\r
-    void initColumns() {\r
-        if (COLUMNS == null) {\r
-            Locale l = getLocale();\r
-            COLUMNS = new String[] {\r
-                    UIManager.getString("FileChooser.fileNameHeaderText", l),\r
-                    UIManager.getString("FileChooser.fileSizeHeaderText", l),\r
-                    UIManager.getString("FileChooser.fileTypeHeaderText", l),\r
-                    UIManager.getString("FileChooser.fileDateHeaderText", l),\r
-                    UIManager.getString("FileChooser.fileAttrHeaderText", l)\r
-                };\r
-        }\r
-    }\r
-\r
-    /**************************************************************************\r
-     * Always create the local UI\r
-     * @param comp\r
-     *************************************************************************/\r
-    public final void setUI(ComponentUI comp) {\r
-        super.setUI(new UI(this));\r
-    }\r
-\r
-    /**************************************************************************\r
-     * Internal implementation of Metal LookAndFeel to create the table sorting\r
-     * ability.\r
-     *************************************************************************/\r
-    private final static class UI extends MetalFileChooserUI {\r
-        private DirectoryModel model;\r
-\r
-        /**************************************************************************\r
-         * Must be overridden to extend\r
-         * @param e\r
-         *************************************************************************/\r
-        public UI(JFileChooser e) {\r
-            super(e);\r
-        }\r
-\r
-        /**************************************************************************\r
-         * Overridden to create our own model\r
-         *************************************************************************/\r
-        protected final void createModel() {\r
-            model = new DirectoryModel(getFileChooser());\r
-        }\r
-\r
-        /**************************************************************************\r
-         * Overridden to get our own model\r
-         * @return\r
-         *************************************************************************/\r
-        public final BasicDirectoryModel getModel() {\r
-            return model;\r
-        }\r
-\r
-        /**************************************************************************\r
-         * Calls the default method then adds a MouseListener to the JTable\r
-         * @param chooser\r
-         * @return\r
-         *************************************************************************/\r
-        protected final JPanel createDetailsView(JFileChooser chooser) {\r
-            final JPanel panel = super.createDetailsView(chooser);\r
-\r
-            //Since we can't access MetalFileChooserUI's private member detailsTable\r
-            //directly, we have to find it in the JPanel\r
-            final JTable tbl = findJTable(panel.getComponents());\r
-\r
-            if (tbl != null) {\r
-                //Fix the columns so they can't be rearranged, if we don't do this\r
-                //we would need to keep track when each column is moved\r
-                tbl.getTableHeader().setReorderingAllowed(false);\r
-\r
-                //Add a mouselistener to listen for clicks on column headers\r
-                tbl.getTableHeader().addMouseListener(new MouseAdapter() {\r
-                        public void mouseClicked(MouseEvent e) {\r
-                            //Only process single clicks\r
-                            if (e.getClickCount() > 1) {\r
-                                return;\r
-                            }\r
-\r
-                            e.consume();\r
-\r
-                            final int col = tbl.getTableHeader().columnAtPoint(e.getPoint());\r
-\r
-                            if ((col == COLUMN_FILENAME) ||\r
-                                    (col == COLUMN_FILESIZE) ||\r
-                                    (col == COLUMN_FILEDATE)) {\r
-                                model.sort(col, tbl);\r
-                            }\r
-                        }\r
-                    });\r
-            }\r
-\r
-            return panel;\r
-        }\r
-\r
-        /**************************************************************************\r
-         * Finds the JTable in the panel so we can add MouseListener\r
-         * @param comp\r
-         * @return\r
-         *************************************************************************/\r
-        private final static JTable findJTable(Component[] comp) {\r
-            for (int i = 0; i < comp.length; i++) {\r
-                if (comp[i] instanceof JTable) {\r
-                    return (JTable) comp[i];\r
-                }\r
-\r
-                if (comp[i] instanceof Container) {\r
-                    JTable tbl = findJTable(((Container) comp[i]).getComponents());\r
-\r
-                    if (tbl != null) {\r
-                        return tbl;\r
-                    }\r
-                }\r
-            }\r
-\r
-            return null;\r
-        }\r
-    }\r
-\r
-    /***************************************************************************\r
-     * Implementation of BasicDirectoryModel that sorts the Files by column\r
-     **************************************************************************/\r
-    private final static class DirectoryModel extends BasicDirectoryModel {\r
-        int col = 0;\r
-        boolean ascending;\r
-\r
-        /**************************************************************************\r
-         * Must be overridden to extend BasicDirectoryModel\r
-         * @param chooser\r
-         *************************************************************************/\r
-        DirectoryModel(JFileChooser chooser) {\r
-            super(chooser);\r
-        }\r
-\r
-        /**************************************************************************\r
-         * Supposedly this is not used anymore, hopefully not.  We implemented\r
-         * some basic attempt at sorting just in case\r
-         * @param a\r
-         * @param b\r
-         * @return\r
-         *************************************************************************/\r
-        protected final boolean lt(File a, File b) {\r
-            System.out.println("DEBUG:LT called?");\r
-\r
-            boolean less = false;\r
-\r
-            switch (col) {\r
-            case COLUMN_FILEDATE:\r
-                less = a.lastModified() > b.lastModified();\r
-\r
-                break;\r
-\r
-            case COLUMN_FILESIZE:\r
-                less = a.length() > b.length();\r
-\r
-                break;\r
-\r
-            default:\r
-                less = a.getName().compareToIgnoreCase(b.getName()) > 0;\r
-\r
-                break;\r
-            }\r
-\r
-            if (ascending) {\r
-                return less = !less;\r
-            }\r
-\r
-            return less;\r
-        }\r
-\r
-        /**************************************************************************\r
-         * Resorts the JFileChooser table based on new column\r
-         * @param c\r
-         *************************************************************************/\r
-        protected final void sort(int c, JTable tbl) {\r
-            //Set column and order\r
-            col = c;\r
-            ascending = !ascending;\r
-\r
-            String indicator = " (^)";\r
-\r
-            if (ascending) {\r
-                indicator = " (v)";\r
-            }\r
-\r
-            final JTableHeader th = tbl.getTableHeader();\r
-            final TableColumnModel tcm = th.getColumnModel();\r
-\r
-            for (int i = 0; i < JalviewFileChooser.COLUMN_COLCOUNT; i++) {\r
-                final TableColumn tc = tcm.getColumn(i); // the column to change\r
-                tc.setHeaderValue(COLUMNS[i]);\r
-            }\r
-\r
-            final TableColumn tc = tcm.getColumn(col); // the column to change\r
-            tc.setHeaderValue(COLUMNS[col] + indicator);\r
-\r
-            th.repaint();\r
-\r
-            //Requery the file listing\r
-            validateFileCache();\r
-        }\r
-\r
-        /**************************************************************************\r
-         * Sorts the data based on current column setting\r
-         * @param data\r
-         *************************************************************************/\r
-        protected final void sort(Vector data) {\r
-            switch (col) {\r
-            case COLUMN_FILEDATE:\r
-                Collections.sort(data,\r
-                    new Comparator() {\r
-                        public int compare(Object o1, Object o2) {\r
-                            int ret = 1;\r
-                            final File a = (File) o1;\r
-                            final File b = (File) o2;\r
-\r
-                            if (a.lastModified() > b.lastModified()) {\r
-                                ret = -1;\r
-                            } else if (a.lastModified() == b.lastModified()) {\r
-                                ret = 0;\r
-                            }\r
-\r
-                            if (ascending) {\r
-                                ret *= -1;\r
-                            }\r
-\r
-                            return ret;\r
-                        }\r
-                    });\r
-\r
-\r
-                break;\r
-\r
-            case COLUMN_FILESIZE:\r
-                Collections.sort(data,\r
-                    new Comparator() {\r
-                        public int compare(Object o1, Object o2) {\r
-                            int ret = 1;\r
-                            final File a = (File) o1;\r
-                            final File b = (File) o2;\r
-\r
-                            if (a.length() > b.length()) {\r
-                                ret = -1;\r
-                            } else if (a.length() == b.length()) {\r
-                                ret = 0;\r
-                            }\r
-\r
-                            if (ascending) {\r
-                                ret *= -1;\r
-                            }\r
-\r
-                            return ret;\r
-                        }\r
-                    });\r
-\r
-\r
-                break;\r
-\r
-            case COLUMN_FILENAME:\r
-                Collections.sort(data,\r
-                    new Comparator() {\r
-                        public int compare(Object o1, Object o2) {\r
-                            final File a = (File) o1;\r
-                            final File b = (File) o2;\r
-\r
-                            if (ascending) {\r
-                                return a.getName().compareToIgnoreCase(b.getName());\r
-                            } else {\r
-                                return -1 * a.getName().compareToIgnoreCase(b.getName());\r
-                            }\r
-                        }\r
-                    });\r
-\r
-\r
-                break;\r
-            }\r
-        }\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.io;
+
+import jalview.util.MessageManager;
+import jalview.util.Platform;
+
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.EventQueue;
+import java.awt.HeadlessException;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.StringTokenizer;
+import java.util.Vector;
+
+import javax.swing.DefaultListCellRenderer;
+import javax.swing.JFileChooser;
+import javax.swing.JList;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.SpringLayout;
+import javax.swing.plaf.basic.BasicFileChooserUI;
+
+/**
+ * Enhanced file chooser dialog box.
+ *
+ * NOTE: bug on Windows systems when filechooser opened on directory to view
+ * files with colons in title.
+ *
+ * @author AMW
+ *
+ */
+public class JalviewFileChooser extends JFileChooser
+{
+  /**
+   * Factory method to return a file chooser that offers readable alignment file
+   * formats
+   * 
+   * @param directory
+   * @param selected
+   * @param selectAll
+   * @return
+   */
+  public static JalviewFileChooser forRead(String directory,
+          String selected, boolean selectAll)
+  {
+    List<String> extensions = new ArrayList<String>();
+    List<String> descs = new ArrayList<String>();
+    for (FileFormatI format : FileFormat.values())
+    {
+      if (format.isReadable())
+      {
+        extensions.add(format.getExtensions());
+        descs.add(format.toString());
+      }
+    }
+    return new JalviewFileChooser(directory,
+            extensions.toArray(new String[extensions.size()]),
+            descs.toArray(new String[descs.size()]),
+            selected);
+  }
+
+  /**
+   * Factory method to return a file chooser that offers writable alignment file
+   * formats
+   * 
+   * @param directory
+   * @param selected
+   * @param selectAll
+   * @return
+   */
+  public static JalviewFileChooser forWrite(String directory,
+          String selected, boolean selectAll)
+  {
+    // TODO in Java 8, forRead and forWrite can be a single method
+    // with a lambda expression parameter for isReadable/isWritable
+    List<String> extensions = new ArrayList<String>();
+    List<String> descs = new ArrayList<String>();
+    for (FileFormatI format : FileFormat.values())
+    {
+      if (format.isWritable())
+      {
+        extensions.add(format.getExtensions());
+        descs.add(format.toString());
+      }
+    }
+    return new JalviewFileChooser(directory,
+            extensions.toArray(new String[extensions.size()]),
+            descs.toArray(new String[descs.size()]), selected);
+  }
+
+  public JalviewFileChooser(String dir)
+  {
+    super(safePath(dir));
+    setAccessory(new RecentlyOpened());
+  }
+
+  public JalviewFileChooser(String dir, String extension, String desc,
+          String selected)
+  {
+    super(safePath(dir));
+    init(Collections.singletonList(new String[] { extension, desc }),
+            selected);
+  }
+
+  public JalviewFileChooser(String dir, String[] extensions, String[] descs,
+          String selected)
+  {
+    super(safePath(dir));
+    if (extensions.length == descs.length)
+    {
+      List<String[]> formats = new ArrayList<String[]>();
+      for (int i = 0; i < extensions.length; i++)
+      {
+        formats.add(new String[] { extensions[i], descs[i] });
+      }
+      init(formats, selected);
+    }
+    else
+    {
+      System.err.println("JalviewFileChooser arguments mismatch: "
+              + extensions + ", " + descs);
+    }
+  }
+
+  private static File safePath(String dir)
+  {
+    if (dir == null)
+    {
+      return null;
+    }
+
+    File f = new File(dir);
+    if (f.getName().indexOf(':') > -1)
+    {
+      return null;
+    }
+    return f;
+  }
+
+  /**
+   * 
+   * @param formats
+   *          a list of {extensions, description} for each file format
+   * @param selected
+   */
+  void init(List<String[]> formats, String selected)
+  {
+
+    JalviewFileFilter chosen = null;
+
+    // SelectAllFilter needs to be set first before adding further
+    // file filters to fix bug on Mac OSX
+    setAcceptAllFileFilterUsed(true);
+
+    for (String[] format : formats)
+    {
+      JalviewFileFilter jvf = new JalviewFileFilter(format[0], format[1]);
+      addChoosableFileFilter(jvf);
+      if ((selected != null) && selected.equalsIgnoreCase(format[1]))
+      {
+        chosen = jvf;
+      }
+    }
+
+    if (chosen != null)
+    {
+      setFileFilter(chosen);
+    }
+
+    setAccessory(new RecentlyOpened());
+  }
+
+  @Override
+  public void setFileFilter(javax.swing.filechooser.FileFilter filter)
+  {
+    super.setFileFilter(filter);
+
+    try
+    {
+      if (getUI() instanceof BasicFileChooserUI)
+      {
+        final BasicFileChooserUI fcui = (BasicFileChooserUI) getUI();
+        final String name = fcui.getFileName().trim();
+
+        if ((name == null) || (name.length() == 0))
+        {
+          return;
+        }
+
+        EventQueue.invokeLater(new Thread()
+        {
+          @Override
+          public void run()
+          {
+            String currentName = fcui.getFileName();
+            if ((currentName == null) || (currentName.length() == 0))
+            {
+              fcui.setFileName(name);
+            }
+          }
+        });
+      }
+    } catch (Exception ex)
+    {
+      ex.printStackTrace();
+      // Some platforms do not have BasicFileChooserUI
+    }
+  }
+
+  /**
+   * Returns the selected file format, or null if none selected
+   * 
+   * @return
+   */
+  public FileFormatI getSelectedFormat()
+  {
+    if (getFileFilter() == null)
+    {
+      return null;
+    }
+
+    /*
+     * logic here depends on option description being formatted as 
+     * formatName (extension, extension...)
+     * or the 'no option selected' value
+     * All Files
+     * @see JalviewFileFilter.getDescription
+     */
+    String format = getFileFilter().getDescription();
+    int parenPos = format.indexOf("(");
+    if (parenPos > 0)
+    {
+      format = format.substring(0, parenPos).trim();
+      try
+      {
+        return FileFormat.valueOf(format);
+      } catch (IllegalArgumentException e)
+      {
+        System.err.println("Unexpected format: " + format);
+      }
+    }
+    return null;
+  }
+
+  @Override
+  public int showSaveDialog(Component parent) throws HeadlessException
+  {
+    this.setAccessory(null);
+
+    setDialogType(SAVE_DIALOG);
+
+    int ret = showDialog(parent, MessageManager.getString("action.save"));
+
+    if (getFileFilter() instanceof JalviewFileFilter)
+    {
+      JalviewFileFilter jvf = (JalviewFileFilter) getFileFilter();
+
+      if (!jvf.accept(getSelectedFile()))
+      {
+        String withExtension = getSelectedFile() + "."
+                + jvf.getAcceptableExtension();
+        setSelectedFile(new File(withExtension));
+      }
+    }
+    // TODO: ENSURE THAT FILES SAVED WITH A ':' IN THE NAME ARE REFUSED AND THE
+    // USER PROMPTED FOR A NEW FILENAME
+    if ((ret == JalviewFileChooser.APPROVE_OPTION)
+            && getSelectedFile().exists())
+    {
+      int confirm = JOptionPane.showConfirmDialog(parent,
+              MessageManager.getString("label.overwrite_existing_file"),
+              MessageManager.getString("label.file_already_exists"),
+              JOptionPane.YES_NO_OPTION);
+
+      if (confirm != JOptionPane.YES_OPTION)
+      {
+        ret = JalviewFileChooser.CANCEL_OPTION;
+      }
+    }
+
+    return ret;
+  }
+
+  void recentListSelectionChanged(Object selection)
+  {
+    setSelectedFile(null);
+    if (selection != null)
+    {
+      File file = new File((String) selection);
+      if (getFileFilter() instanceof JalviewFileFilter)
+      {
+        JalviewFileFilter jvf = (JalviewFileFilter) this.getFileFilter();
+
+        if (!jvf.accept(file))
+        {
+          setFileFilter(getChoosableFileFilters()[0]);
+        }
+      }
+
+      setSelectedFile(file);
+    }
+  }
+
+  class RecentlyOpened extends JPanel
+  {
+    JList list;
+
+    public RecentlyOpened()
+    {
+
+      String historyItems = jalview.bin.Cache.getProperty("RECENT_FILE");
+      StringTokenizer st;
+      Vector recent = new Vector();
+
+      if (historyItems != null)
+      {
+        st = new StringTokenizer(historyItems, "\t");
+
+        while (st.hasMoreTokens())
+        {
+          recent.addElement(st.nextElement());
+        }
+      }
+
+      list = new JList(recent);
+
+      DefaultListCellRenderer dlcr = new DefaultListCellRenderer();
+      dlcr.setHorizontalAlignment(DefaultListCellRenderer.RIGHT);
+      list.setCellRenderer(dlcr);
+
+      list.addMouseListener(new MouseAdapter()
+      {
+        @Override
+        public void mousePressed(MouseEvent evt)
+        {
+          recentListSelectionChanged(list.getSelectedValue());
+        }
+      });
+
+      this.setBorder(new javax.swing.border.TitledBorder(MessageManager
+              .getString("label.recently_opened")));
+
+      final JScrollPane scroller = new JScrollPane(list);
+
+      SpringLayout layout = new SpringLayout();
+      layout.putConstraint(SpringLayout.WEST, scroller, 5,
+              SpringLayout.WEST, this);
+      layout.putConstraint(SpringLayout.NORTH, scroller, 5,
+              SpringLayout.NORTH, this);
+
+      if (new Platform().isAMac())
+      {
+        scroller.setPreferredSize(new Dimension(500, 100));
+      }
+      else
+      {
+        scroller.setPreferredSize(new Dimension(130, 200));
+      }
+
+      this.add(scroller);
+
+      javax.swing.SwingUtilities.invokeLater(new Runnable()
+      {
+        @Override
+        public void run()
+        {
+          scroller.getHorizontalScrollBar().setValue(
+                  scroller.getHorizontalScrollBar().getMaximum());
+        }
+      });
+
+    }
+
+  }
+}