forester/java/src/org/forester/archaeopteryx/tools/PhyloInferenceDialog.java

   1 // $Id:
   2 // forester -- software libraries and applications
   3 // for genomics and evolutionary biology research.
   4 //
   5 // Copyright (C) 2010 Christian M Zmasek
   6 // Copyright (C) 2010 Sanford-Burnham Medical Research Institute
   7 // All rights reserved
   8 //
   9 // This library is free software; you can redistribute it and/or
  10 // modify it under the terms of the GNU Lesser General Public
  11 // License as published by the Free Software Foundation; either
  12 // version 2.1 of the License, or (at your option) any later version.
  13 //
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17 // Lesser General Public License for more details.
  18 //
  19 // You should have received a copy of the GNU Lesser General Public
  20 // License along with this library; if not, write to the Free Software
  21 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  22 //
  23 // Contact: phylosoft @ gmail . com
  24 // WWW: www.phylosoft.org/forester
  25
  26 package org.forester.archaeopteryx.tools;
  27
  28 import java.awt.Color;
  29 import java.awt.FlowLayout;
  30 import java.awt.event.ActionEvent;
  31 import java.awt.event.ActionListener;
  32 import java.util.List;
  33
  34 import javax.swing.BoxLayout;
  35 import javax.swing.ButtonGroup;
  36 import javax.swing.JButton;
  37 import javax.swing.JCheckBox;
  38 import javax.swing.JDialog;
  39 import javax.swing.JFormattedTextField;
  40 import javax.swing.JLabel;
  41 import javax.swing.JOptionPane;
  42 import javax.swing.JPanel;
  43 import javax.swing.JRadioButton;
  44 import javax.swing.JTextField;
  45 import javax.swing.border.Border;
  46 import javax.swing.border.LineBorder;
  47
  48 import org.forester.archaeopteryx.AptxUtil;
  49 import org.forester.archaeopteryx.MainFrameApplication;
  50 import org.forester.evoinference.distance.PairwiseDistanceCalculator.PWD_DISTANCE_METHOD;
  51 import org.forester.sequence.Sequence;
  52 import org.forester.util.BasicDescriptiveStatistics;
  53 import org.forester.util.DescriptiveStatistics;
  54
  55 public class PhyloInferenceDialog extends JDialog implements ActionListener {
  56
  57     private static final long                  serialVersionUID = 8337543508238133614L;
  58     private final JPanel                       _pnl;
  59     private final JButton                      _launch_btn;
  60     private final JButton                      _cancel_btn;
  61     private final JFormattedTextField          _bootstrap_tf;
  62     private final JCheckBox                    _bootstrap_cb;
  63     private final PhylogeneticInferenceOptions _opts;
  64     private JTextField                         _input_msa_file_tf;
  65     private JButton                            _select_input_msa_btn;
  66     private final MainFrameApplication         _parent_frame;
  67     private JTextField                         _msa_length_tf;
  68     private JTextField                         _msa_size_tf;
  69     private JTextField                         _msa_type_tf;
  70     private final JRadioButton                 _distance_calc_kimura_rb;
  71     private final JRadioButton                 _distance_calc_poisson_rb;
  72     private final JRadioButton                 _distance_calc_fract_dissimilarity_rb;
  73     private int                                _value           = JOptionPane.CANCEL_OPTION;
  74     private JTextField                         _input_seqs_tf;
  75     private JButton                            _select_input_seqs_btn;
  76     private JTextField                         _input_seqs_number_tf;
  77     private JTextField                         _input_seqs_median_length_tf;
  78     private JTextField                         _input_seqs_min_length_tf;
  79     private JTextField                         _input_seqs_max_length_tf;
  80     private JTextField                         _input_seqs_type_tf;
  81     private JTextField                         _input_seqs_msa_program_name_tf;
  82     private JTextField                         _input_seqs_msa_paramenters_tf;
  83     private JTextField                         _msa_processing_max_allowed_gap_ratio_tf;
  84     private JTextField                         _msa_processing_min_allowed_length_tf;
  85     private JTextField                         _random_seed_tf;
  86     private JCheckBox                          _execute_msa_processing_cb;
  87     private JCheckBox                          _msa_processing_remove_all_gap_columns_cb;
  88     private JCheckBox                          _save_pwd_file_cb;
  89     private JCheckBox                          _save_processed_msa_cb;
  90     private JCheckBox                          _save_original_msa_cb;
  91     private JTextField                         _pwd_outfile_tf;
  92     private JTextField                         _processed_msa_outfile_tf;
  93     private JTextField                         _original_msa_outfile_tf;
  94
  95     public PhyloInferenceDialog( final MainFrameApplication frame,
  96                                  final PhylogeneticInferenceOptions options,
  97                                  final boolean from_unaligned_seqs ) {
  98         super( frame, true );
  99         setVisible( false );
 100         _parent_frame = frame;
 101         _opts = options;
 102         _pnl = new JPanel();
 103         getContentPane().add( _pnl );
 104         final BoxLayout box_layout = new BoxLayout( _pnl, BoxLayout.PAGE_AXIS );
 105         _pnl.setLayout( box_layout );
 106         if ( from_unaligned_seqs ) {
 107             setTitle( "Phylogenetic Inference (including multiple sequence alignment)" );
 108             final JPanel inputfile_pnl_1 = new JPanel();
 109             final JPanel inputfile_pnl_2 = new JPanel();
 110             final JPanel inputfile_pnl_3 = new JPanel();
 111             inputfile_pnl_1.setLayout( new FlowLayout() );
 112             inputfile_pnl_2.setLayout( new FlowLayout() );
 113             inputfile_pnl_3.setLayout( new FlowLayout() );
 114             inputfile_pnl_1.add( new JLabel( "Input Sequence File:" ) );
 115             inputfile_pnl_1.add( _input_seqs_tf = new JTextField() );
 116             inputfile_pnl_1.add( _select_input_seqs_btn = new JButton( "Select Input File" ) );
 117             inputfile_pnl_2.add( new JLabel( "Sequences: " ) );
 118             inputfile_pnl_2.add( new JLabel( "Number of Sequences:" ) );
 119             inputfile_pnl_2.add( _input_seqs_number_tf = new JTextField() );
 120             inputfile_pnl_2.add( new JLabel( "Length: median:" ) );
 121             inputfile_pnl_2.add( _input_seqs_median_length_tf = new JTextField() );
 122             inputfile_pnl_2.add( new JLabel( "min:" ) );
 123             inputfile_pnl_2.add( _input_seqs_min_length_tf = new JTextField() );
 124             inputfile_pnl_2.add( new JLabel( "max:" ) );
 125             inputfile_pnl_2.add( _input_seqs_max_length_tf = new JTextField() );
 126             inputfile_pnl_2.add( new JLabel( "Type:" ) );
 127             inputfile_pnl_2.add( _input_seqs_type_tf = new JTextField() );
 128             inputfile_pnl_3.add( new JLabel( "Mutiple Sequence Alignment: " ) );
 129             inputfile_pnl_3.add( new JLabel( "Program: " ) );
 130             inputfile_pnl_3.add( _input_seqs_msa_program_name_tf = new JTextField() );
 131             inputfile_pnl_3.add( new JLabel( "Parameters: " ) );
 132             inputfile_pnl_3.add( _input_seqs_msa_paramenters_tf = new JTextField() );
 133             _input_seqs_median_length_tf.setColumns( 4 );
 134             _input_seqs_min_length_tf.setColumns( 4 );
 135             _input_seqs_max_length_tf.setColumns( 4 );
 136             _input_seqs_number_tf.setColumns( 4 );
 137             _input_seqs_type_tf.setColumns( 2 );
 138             _input_seqs_tf.setColumns( 20 );
 139             _input_seqs_tf.setEditable( false );
 140             _input_seqs_median_length_tf.setEditable( false );
 141             _input_seqs_min_length_tf.setEditable( false );
 142             _input_seqs_max_length_tf.setEditable( false );
 143             _input_seqs_number_tf.setEditable( false );
 144             _input_seqs_type_tf.setEditable( false );
 145             _input_seqs_msa_program_name_tf.setEditable( false );
 146             _input_seqs_msa_paramenters_tf.setColumns( 26 );
 147             _select_input_seqs_btn.addActionListener( this );
 148             _pnl.add( inputfile_pnl_1 );
 149             _pnl.add( inputfile_pnl_2 );
 150             _pnl.add( inputfile_pnl_3 );
 151         }
 152         else {
 153             setTitle( "Phylogenetic Inference (from already aligned sequences) " );
 154             // Inputfile (MSA):
 155             final JPanel inputfile_pnl_1 = new JPanel();
 156             final JPanel inputfile_pnl_2 = new JPanel();
 157             inputfile_pnl_1.setLayout( new FlowLayout() );
 158             inputfile_pnl_2.setLayout( new FlowLayout() );
 159             inputfile_pnl_1.add( new JLabel( "Input MSA File:" ) );
 160             inputfile_pnl_1.add( _input_msa_file_tf = new JTextField() );
 161             inputfile_pnl_1.add( _select_input_msa_btn = new JButton( "Select Input File" ) );
 162             inputfile_pnl_2.add( new JLabel( "MSA: " ) );
 163             inputfile_pnl_2.add( new JLabel( "Number of Sequences:" ) );
 164             inputfile_pnl_2.add( _msa_size_tf = new JTextField() );
 165             inputfile_pnl_2.add( new JLabel( "Length:" ) );
 166             inputfile_pnl_2.add( _msa_length_tf = new JTextField() );
 167             inputfile_pnl_2.add( new JLabel( "Type:" ) );
 168             inputfile_pnl_2.add( _msa_type_tf = new JTextField() );
 169             _msa_length_tf.setColumns( 4 );
 170             _msa_size_tf.setColumns( 4 );
 171             _msa_type_tf.setColumns( 2 );
 172             _input_msa_file_tf.setColumns( 20 );
 173             _input_msa_file_tf.setEditable( false );
 174             _msa_length_tf.setEditable( false );
 175             _msa_size_tf.setEditable( false );
 176             _msa_type_tf.setEditable( false );
 177             _select_input_msa_btn.addActionListener( this );
 178             _pnl.add( inputfile_pnl_1 );
 179             _pnl.add( inputfile_pnl_2 );
 180         }
 181         //
 182         final JPanel inputfile_pnl_4 = new JPanel();
 183         inputfile_pnl_4.setLayout( new FlowLayout() );
 184         inputfile_pnl_4.add( new JLabel( "MSA Processing: " ) );
 185         inputfile_pnl_4.add( _execute_msa_processing_cb = new JCheckBox( "Process MSA" ) );
 186         inputfile_pnl_4.add( _msa_processing_remove_all_gap_columns_cb = new JCheckBox( "Remove all gap columns" ) );
 187         inputfile_pnl_4.add( new JLabel( "Max allowed gap ratio: " ) );
 188         inputfile_pnl_4.add( _msa_processing_max_allowed_gap_ratio_tf = new JTextField() );
 189         inputfile_pnl_4.add( new JLabel( "Min allowed non-gap sequence length: " ) );
 190         inputfile_pnl_4.add( _msa_processing_min_allowed_length_tf = new JTextField() );
 191         _msa_processing_max_allowed_gap_ratio_tf.setColumns( 4 );
 192         _msa_processing_min_allowed_length_tf.setColumns( 4 );
 193         final Border b = new LineBorder( Color.DARK_GRAY );
 194         inputfile_pnl_4.setBorder( b );
 195         _pnl.add( inputfile_pnl_4 );
 196         //
 197         // Distance calculation:
 198         // TODO if type==AA...
 199         final JPanel distance_calc_pnl_1 = new JPanel();
 200         distance_calc_pnl_1.setLayout( new FlowLayout() );
 201         distance_calc_pnl_1.add( new JLabel( "Distance calculation:" ) );
 202         distance_calc_pnl_1.add( _distance_calc_kimura_rb = new JRadioButton( "Kimura correction" ) );
 203         distance_calc_pnl_1.add( _distance_calc_poisson_rb = new JRadioButton( "Poisson" ) );
 204         distance_calc_pnl_1
 205                 .add( _distance_calc_fract_dissimilarity_rb = new JRadioButton( "Fractional dissimilarity" ) );
 206         final ButtonGroup distance_calc_group_1 = new ButtonGroup();
 207         distance_calc_group_1.add( _distance_calc_kimura_rb );
 208         distance_calc_group_1.add( _distance_calc_poisson_rb );
 209         distance_calc_group_1.add( _distance_calc_fract_dissimilarity_rb );
 210         _pnl.add( distance_calc_pnl_1 );
 211         // Bootstrap resampling:
 212         final JPanel bootstrap_pnl = new JPanel();
 213         bootstrap_pnl.setLayout( new FlowLayout() );
 214         bootstrap_pnl.add( _bootstrap_cb = new JCheckBox( "Perform Bootstrap Resampling" ) );
 215         bootstrap_pnl.add( new JLabel( "Number of Bootstrap Samples:" ) );
 216         bootstrap_pnl.add( _bootstrap_tf = new JFormattedTextField( AptxUtil.createMaskFormatter( "###" ) ) );
 217         _bootstrap_tf.setColumns( 4 );
 218         // TODO see
 219         // http://download.oracle.com/javase/tutorial/uiswing/components/formattedtextfield.html
 220         // _bootstrap_tf.setColumns( 4 );
 221         bootstrap_pnl.add( new JLabel( "Random Seed:" ) );
 222         bootstrap_pnl.add( _random_seed_tf = new JTextField() );
 223         _random_seed_tf.setColumns( 4 );
 224         _pnl.add( bootstrap_pnl );
 225         final JPanel launch_pnl = new JPanel();
 226         launch_pnl.setLayout( new FlowLayout() );
 227         _launch_btn = new JButton( "Go!" );
 228         _launch_btn.addActionListener( this );
 229         launch_pnl.add( _launch_btn );
 230         _cancel_btn = new JButton( "Cancel" );
 231         _cancel_btn.addActionListener( this );
 232         launch_pnl.add( _cancel_btn );
 233         _pnl.add( launch_pnl );
 234         initializeValues( from_unaligned_seqs );
 235         pack();
 236         setLocationRelativeTo( getParentFrame() );
 237         setResizable( false );
 238     }
 239
 240     @Override
 241     public void actionPerformed( final ActionEvent e ) {
 242         if ( e.getSource() == _select_input_msa_btn ) {
 243             readInputFile();
 244         }
 245         else if ( e.getSource() == _select_input_seqs_btn ) {
 246             readInputSeqsFile();
 247         }
 248         else if ( e.getSource() == _launch_btn ) {
 249             launch();
 250         }
 251         else if ( e.getSource() == _cancel_btn ) {
 252             cancel();
 253         }
 254     }
 255
 256     public void activate() {
 257         setVisible( true );
 258     }
 259
 260     private MainFrameApplication getParentFrame() {
 261         return _parent_frame;
 262     }
 263
 264     public PhylogeneticInferenceOptions getPhylogeneticInferenceOptions() {
 265         return _opts;
 266     }
 267
 268     public int getValue() {
 269         return _value;
 270     }
 271
 272     private void initializeValues( final boolean from_unaligned_seqs ) {
 273         _value = JOptionPane.CANCEL_OPTION;
 274         if ( from_unaligned_seqs ) {
 275             updateSeqsItems();
 276             _input_seqs_msa_program_name_tf.setText( getPhylogeneticInferenceOptions().getMsaPrg() );
 277             _input_seqs_msa_paramenters_tf.setText( getPhylogeneticInferenceOptions().getMsaPrgParameters() );
 278         }
 279         else {
 280             updateMsaItems();
 281         }
 282         updateMsaProcessingItem();
 283         updateDistanceCalcMethod();
 284         _bootstrap_tf.setText( getPhylogeneticInferenceOptions().getBootstrapSamples() + "" );
 285         _random_seed_tf.setText( getPhylogeneticInferenceOptions().getRandomNumberGeneratorSeed() + "" );
 286     }
 287
 288     private void launch() {
 289         processPerformBootstrapResampling();
 290         if ( _bootstrap_cb.isSelected() ) {
 291             processBootstrapSamplesNumber();
 292             processRandomNumberGeneratorSeed();
 293         }
 294         if ( true ) {
 295             //TODO
 296             processMsaProcessing();
 297         }
 298         processDistanceCalcMethod();
 299         processMsaPrgParameters();
 300         setVisible( false );
 301         _value = JOptionPane.OK_OPTION;
 302     }
 303
 304     private void cancel() {
 305         setVisible( false );
 306         _value = JOptionPane.CANCEL_OPTION;
 307     }
 308
 309     private void processBootstrapSamplesNumber() {
 310         int bootstrap_samples = 0;
 311         try {
 312             bootstrap_samples = Integer.parseInt( _bootstrap_tf.getText().trim() );
 313         }
 314         catch ( final NumberFormatException e ) {
 315             // JOptionPane.showMessageDialog( this, "Could not parse number of bootstrap resamplings from: " +  _bootstrap_tf.getText().trim(), "User Error", JOptionPane.ERROR_MESSAGE );
 316             return;
 317         }
 318         if ( bootstrap_samples >= 0 ) {
 319             getPhylogeneticInferenceOptions().setBootstrapSamples( bootstrap_samples );
 320         }
 321     }
 322
 323     private void processRandomNumberGeneratorSeed() {
 324         long seed = PhylogeneticInferenceOptions.RANDOM_NUMBER_SEED_DEFAULT;
 325         try {
 326             seed = Long.parseLong( _random_seed_tf.getText().trim() );
 327         }
 328         catch ( final NumberFormatException e ) {
 329             return;
 330         }
 331         getPhylogeneticInferenceOptions().setRandomNumberGeneratorSeed( seed );
 332     }
 333
 334     private void processMsaProcessing() {
 335         getPhylogeneticInferenceOptions().setExecuteMsaProcessing( _execute_msa_processing_cb.isSelected() );
 336         getPhylogeneticInferenceOptions()
 337                 .setMsaProcessingRemoveAllGapColumns( _msa_processing_remove_all_gap_columns_cb.isSelected() );
 338         int min_length = -1;
 339         try {
 340             min_length = Integer.parseInt( _msa_processing_min_allowed_length_tf.getText().trim() );
 341         }
 342         catch ( final NumberFormatException e ) {
 343             min_length = -1;
 344         }
 345         if ( min_length > 0 ) {
 346             getPhylogeneticInferenceOptions().setMsaProcessingMinAllowedLength( min_length );
 347         }
 348         double msa_processing_max_allowed_gap_ratio = -1.0;
 349         try {
 350             msa_processing_max_allowed_gap_ratio = Double.parseDouble( _msa_processing_max_allowed_gap_ratio_tf
 351                     .getText().trim() );
 352         }
 353         catch ( final NumberFormatException e ) {
 354             msa_processing_max_allowed_gap_ratio = -1.0;
 355         }
 356         if ( ( msa_processing_max_allowed_gap_ratio >= 0.0 ) && ( msa_processing_max_allowed_gap_ratio <= 1.0 ) ) {
 357             getPhylogeneticInferenceOptions().setMsaProcessingMaxAllowedGapRatio( msa_processing_max_allowed_gap_ratio );
 358         }
 359     }
 360
 361     private void processDistanceCalcMethod() {
 362         if ( ( _distance_calc_kimura_rb != null ) && _distance_calc_kimura_rb.isSelected() ) {
 363             getPhylogeneticInferenceOptions().setPwdDistanceMethod( PWD_DISTANCE_METHOD.KIMURA_DISTANCE );
 364         }
 365         else if ( ( _distance_calc_poisson_rb != null ) && _distance_calc_poisson_rb.isSelected() ) {
 366             getPhylogeneticInferenceOptions().setPwdDistanceMethod( PWD_DISTANCE_METHOD.POISSON_DISTANCE );
 367         }
 368         else if ( ( _distance_calc_fract_dissimilarity_rb != null )
 369                 && _distance_calc_fract_dissimilarity_rb.isSelected() ) {
 370             getPhylogeneticInferenceOptions().setPwdDistanceMethod( PWD_DISTANCE_METHOD.FRACTIONAL_DISSIMILARITY );
 371         }
 372     }
 373
 374     private void processPerformBootstrapResampling() {
 375         getPhylogeneticInferenceOptions().setPerformBootstrapResampling( _bootstrap_cb.isSelected() );
 376     }
 377
 378     private void processMsaPrgParameters() {
 379         if ( _input_seqs_msa_paramenters_tf != null ) {
 380             getPhylogeneticInferenceOptions().setMsaPrgParameters( _input_seqs_msa_paramenters_tf.getText() );
 381         }
 382     }
 383
 384     private void readInputFile() {
 385         getParentFrame().readMsaFromFile();
 386         updateMsaItems();
 387     }
 388
 389     private void readInputSeqsFile() {
 390         getParentFrame().readSeqsFromFile();
 391         updateSeqsItems();
 392     }
 393
 394     private void updateDistanceCalcMethod() {
 395         switch ( getPhylogeneticInferenceOptions().getPwdDistanceMethod() ) {
 396             case KIMURA_DISTANCE:
 397                 _distance_calc_kimura_rb.setSelected( true );
 398                 break;
 399             case POISSON_DISTANCE:
 400                 _distance_calc_poisson_rb.setSelected( true );
 401                 break;
 402             case FRACTIONAL_DISSIMILARITY:
 403                 _distance_calc_fract_dissimilarity_rb.setSelected( true );
 404                 break;
 405             default:
 406                 throw new RuntimeException( "invalid distance calc method" );
 407         }
 408     }
 409
 410     private void updateMsaProcessingItem() {
 411         _execute_msa_processing_cb.setSelected( getPhylogeneticInferenceOptions().isExecuteMsaProcessing() );
 412         _msa_processing_remove_all_gap_columns_cb.setSelected( getPhylogeneticInferenceOptions()
 413                 .isMsaProcessingRemoveAllGapColumns() );
 414         if ( _opts.getMsaProcessingMaxAllowedGapRatio() > 0 ) {
 415             _msa_processing_max_allowed_gap_ratio_tf.setText( _opts.getMsaProcessingMaxAllowedGapRatio() + "" );
 416         }
 417         if ( _opts.getMsaProcessingMinAllowedLength() > 0 ) {
 418             _msa_processing_min_allowed_length_tf.setText( _opts.getMsaProcessingMinAllowedLength() + "" );
 419         }
 420     }
 421
 422     private void updateMsaItems() {
 423         if ( getParentFrame().getMsa() != null ) {
 424             _input_msa_file_tf.setText( getParentFrame().getMsaFile().toString() );
 425             _msa_length_tf.setText( getParentFrame().getMsa().getLength() + "" );
 426             _msa_size_tf.setText( getParentFrame().getMsa().getNumberOfSequences() + "" );
 427             _msa_type_tf.setText( getParentFrame().getMsa().getType() + "" );
 428             _input_msa_file_tf.setEnabled( true );
 429             _msa_length_tf.setEnabled( true );
 430             _msa_size_tf.setEnabled( true );
 431             _msa_type_tf.setEnabled( true );
 432             _launch_btn.setEnabled( true );
 433         }
 434         else {
 435             _input_msa_file_tf.setText( "" );
 436             _msa_length_tf.setText( "" );
 437             _msa_size_tf.setText( "" );
 438             _msa_type_tf.setText( "" );
 439             _input_msa_file_tf.setEnabled( false );
 440             _msa_length_tf.setEnabled( false );
 441             _msa_size_tf.setEnabled( false );
 442             _msa_type_tf.setEnabled( false );
 443             _launch_btn.setEnabled( false );
 444         }
 445     }
 446
 447     private void updateSeqsItems() {
 448         if ( getParentFrame().getSeqs() != null ) {
 449             final DescriptiveStatistics stats = calcSequenceStats( getParentFrame().getSeqs() );
 450             _input_seqs_tf.setText( getParentFrame().getSeqsFile().toString() );
 451             _input_seqs_median_length_tf.setText( ( int ) stats.median() + "" );
 452             _input_seqs_min_length_tf.setText( ( int ) stats.getMin() + "" );
 453             _input_seqs_max_length_tf.setText( ( int ) stats.getMax() + "" );
 454             _input_seqs_number_tf.setText( getParentFrame().getSeqs().size() + "" );
 455             _input_seqs_type_tf.setText( getParentFrame().getSeqs().get( 0 ).getType() + "" );
 456             _input_seqs_tf.setEnabled( true );
 457             _input_seqs_median_length_tf.setEnabled( true );
 458             _input_seqs_min_length_tf.setEnabled( true );
 459             _input_seqs_max_length_tf.setEnabled( true );
 460             _input_seqs_number_tf.setEnabled( true );
 461             _input_seqs_type_tf.setEnabled( true );
 462             _launch_btn.setEnabled( true );
 463         }
 464         else {
 465             _input_seqs_tf.setText( "" );
 466             _input_seqs_median_length_tf.setText( "" );
 467             _input_seqs_min_length_tf.setText( "" );
 468             _input_seqs_max_length_tf.setText( "" );
 469             _input_seqs_number_tf.setText( "" );
 470             _input_seqs_type_tf.setText( "" );
 471             _input_seqs_tf.setEnabled( false );
 472             _input_seqs_median_length_tf.setEnabled( false );
 473             _input_seqs_min_length_tf.setEnabled( false );
 474             _input_seqs_max_length_tf.setEnabled( false );
 475             _input_seqs_number_tf.setEnabled( false );
 476             _input_seqs_type_tf.setEnabled( false );
 477             _launch_btn.setEnabled( false );
 478         }
 479     }
 480
 481     DescriptiveStatistics calcSequenceStats( final List<Sequence> seqs ) {
 482         final DescriptiveStatistics stats = new BasicDescriptiveStatistics();
 483         for( final Sequence s : seqs ) {
 484             stats.addValue( s.getLength() );
 485         }
 486         return stats;
 487     }
 488 }