src/jalview/gui/TreePanel.java

   1 /*
   2  * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
   3  * Copyright (C) $$Year-Rel$$ The Jalview Authors
   4  *
   5  * This file is part of Jalview.
   6  *
   7  * Jalview is free software: you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation, either version 3
  10  * of the License, or (at your option) any later version.
  11  *
  12  * Jalview is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty
  14  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  15  * PURPOSE.  See the GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
  19  * The Jalview Authors are detailed in the 'AUTHORS' file.
  20  */
  21 package jalview.gui;
  22
  23 import jalview.analysis.AlignmentSorter;
  24 import jalview.analysis.NJTree;
  25 import jalview.api.analysis.ScoreModelI;
  26 import jalview.api.analysis.ViewBasedAnalysisI;
  27 import jalview.bin.Cache;
  28 import jalview.commands.CommandI;
  29 import jalview.commands.OrderCommand;
  30 import jalview.datamodel.Alignment;
  31 import jalview.datamodel.AlignmentI;
  32 import jalview.datamodel.AlignmentView;
  33 import jalview.datamodel.BinaryNode;
  34 import jalview.datamodel.ColumnSelection;
  35 import jalview.datamodel.DBRefEntry;
  36 import jalview.datamodel.NodeTransformI;
  37 import jalview.datamodel.SequenceFeature;
  38 import jalview.datamodel.SequenceI;
  39 import jalview.datamodel.SequenceNode;
  40 import jalview.io.JalviewFileChooser;
  41 import jalview.io.JalviewFileView;
  42 import jalview.io.NewickFile;
  43 import jalview.jbgui.GTreePanel;
  44 import jalview.schemes.ResidueProperties;
  45 import jalview.util.MessageManager;
  46 import jalview.viewmodel.AlignmentViewport;
  47
  48 import java.awt.Font;
  49 import java.awt.Graphics;
  50 import java.awt.event.ActionEvent;
  51 import java.awt.event.ActionListener;
  52 import java.awt.image.BufferedImage;
  53 import java.beans.PropertyChangeEvent;
  54 import java.io.FileOutputStream;
  55 import java.util.ArrayList;
  56 import java.util.List;
  57
  58 import javax.imageio.ImageIO;
  59 import javax.swing.ButtonGroup;
  60 import javax.swing.JMenuItem;
  61 import javax.swing.JRadioButtonMenuItem;
  62
  63 import org.jibble.epsgraphics.EpsGraphics2D;
  64
  65 /**
  66  * DOCUMENT ME!
  67  *
  68  * @author $author$
  69  * @version $Revision$
  70  */
  71 public class TreePanel extends GTreePanel
  72 {
  73   String type;
  74
  75   String pwtype;
  76
  77   TreeCanvas treeCanvas;
  78
  79   NJTree tree;
  80
  81   AlignViewport av;
  82
  83   /**
  84    * Creates a new TreePanel object.
  85    *
  86    * @param av
  87    *          DOCUMENT ME!
  88    * @param seqVector
  89    *          DOCUMENT ME!
  90    * @param type
  91    *          DOCUMENT ME!
  92    * @param pwtype
  93    *          DOCUMENT ME!
  94    * @param s
  95    *          DOCUMENT ME!
  96    * @param e
  97    *          DOCUMENT ME!
  98    */
  99   public TreePanel(AlignmentPanel ap, String type, String pwtype)
 100   {
 101     super();
 102     initTreePanel(ap, type, pwtype, null, null);
 103
 104     // We know this tree has distances. JBPNote TODO: prolly should add this as
 105     // a userdefined default
 106     // showDistances(true);
 107   }
 108
 109   /**
 110    * Creates a new TreePanel object.
 111    *
 112    * @param av
 113    *          DOCUMENT ME!
 114    * @param seqVector
 115    *          DOCUMENT ME!
 116    * @param newtree
 117    *          DOCUMENT ME!
 118    * @param type
 119    *          DOCUMENT ME!
 120    * @param pwtype
 121    *          DOCUMENT ME!
 122    */
 123   public TreePanel(AlignmentPanel ap, String type, String pwtype,
 124           NewickFile newtree)
 125   {
 126     super();
 127     initTreePanel(ap, type, pwtype, newtree, null);
 128   }
 129
 130   public TreePanel(AlignmentPanel av, String type, String pwtype,
 131           NewickFile newtree, AlignmentView inputData)
 132   {
 133     super();
 134     initTreePanel(av, type, pwtype, newtree, inputData);
 135   }
 136
 137   public AlignmentI getAlignment()
 138   {
 139     return treeCanvas.av.getAlignment();
 140   }
 141
 142   public AlignmentViewport getViewPort()
 143   {
 144     return treeCanvas.av;
 145   }
 146
 147   void initTreePanel(AlignmentPanel ap, String type, String pwtype,
 148           NewickFile newTree, AlignmentView inputData)
 149   {
 150
 151     av = ap.av;
 152     this.type = type;
 153     this.pwtype = pwtype;
 154
 155     treeCanvas = new TreeCanvas(this, ap, scrollPane);
 156     scrollPane.setViewportView(treeCanvas);
 157
 158     PaintRefresher.Register(this, ap.av.getSequenceSetId());
 159
 160     buildAssociatedViewMenu();
 161
 162     av.addPropertyChangeListener(new java.beans.PropertyChangeListener()
 163     {
 164       @Override
 165       public void propertyChange(PropertyChangeEvent evt)
 166       {
 167         if (evt.getPropertyName().equals("alignment"))
 168         {
 169           if (tree == null)
 170           {
 171             System.out.println("tree is null");
 172             // TODO: deal with case when a change event is received whilst a
 173             // tree is still being calculated - should save reference for
 174             // processing message later.
 175             return;
 176           }
 177           if (evt.getNewValue() == null)
 178           {
 179             System.out
 180                     .println("new alignment sequences vector value is null");
 181           }
 182
 183           tree.UpdatePlaceHolders((List<SequenceI>) evt.getNewValue());
 184           treeCanvas.nameHash.clear(); // reset the mapping between canvas
 185           // rectangles and leafnodes
 186           repaint();
 187         }
 188       }
 189     });
 190
 191     TreeLoader tl = new TreeLoader(newTree);
 192     if (inputData != null)
 193     {
 194       tl.odata = inputData;
 195     }
 196     tl.start();
 197
 198   }
 199
 200   @Override
 201   public void viewMenu_menuSelected()
 202   {
 203     buildAssociatedViewMenu();
 204   }
 205
 206   void buildAssociatedViewMenu()
 207   {
 208     AlignmentPanel[] aps = PaintRefresher.getAssociatedPanels(av
 209             .getSequenceSetId());
 210     if (aps.length == 1 && treeCanvas.ap == aps[0])
 211     {
 212       associateLeavesMenu.setVisible(false);
 213       return;
 214     }
 215
 216     associateLeavesMenu.setVisible(true);
 217
 218     if ((viewMenu.getItem(viewMenu.getItemCount() - 2) instanceof JMenuItem))
 219     {
 220       viewMenu.insertSeparator(viewMenu.getItemCount() - 1);
 221     }
 222
 223     associateLeavesMenu.removeAll();
 224
 225     JRadioButtonMenuItem item;
 226     ButtonGroup buttonGroup = new ButtonGroup();
 227     int i, iSize = aps.length;
 228     final TreePanel thisTreePanel = this;
 229     for (i = 0; i < iSize; i++)
 230     {
 231       final AlignmentPanel ap = aps[i];
 232       item = new JRadioButtonMenuItem(ap.av.viewName, ap == treeCanvas.ap);
 233       buttonGroup.add(item);
 234       item.addActionListener(new ActionListener()
 235       {
 236         @Override
 237         public void actionPerformed(ActionEvent evt)
 238         {
 239           treeCanvas.applyToAllViews = false;
 240           treeCanvas.ap = ap;
 241           treeCanvas.av = ap.av;
 242           PaintRefresher.Register(thisTreePanel, ap.av.getSequenceSetId());
 243         }
 244       });
 245
 246       associateLeavesMenu.add(item);
 247     }
 248
 249     final JRadioButtonMenuItem itemf = new JRadioButtonMenuItem(
 250             MessageManager.getString("label.all_views"));
 251     buttonGroup.add(itemf);
 252     itemf.setSelected(treeCanvas.applyToAllViews);
 253     itemf.addActionListener(new ActionListener()
 254     {
 255       @Override
 256       public void actionPerformed(ActionEvent evt)
 257       {
 258         treeCanvas.applyToAllViews = itemf.isSelected();
 259       }
 260     });
 261     associateLeavesMenu.add(itemf);
 262
 263   }
 264
 265   class TreeLoader extends Thread
 266   {
 267     NewickFile newtree;
 268
 269     jalview.datamodel.AlignmentView odata = null;
 270
 271     public TreeLoader(NewickFile newtree)
 272     {
 273       this.newtree = newtree;
 274       if (newtree != null)
 275       {
 276         // Must be outside run(), as Jalview2XML tries to
 277         // update distance/bootstrap visibility at the same time
 278         showBootstrap(newtree.HasBootstrap());
 279         showDistances(newtree.HasDistances());
 280       }
 281     }
 282
 283     @Override
 284     public void run()
 285     {
 286
 287       if (newtree != null)
 288       {
 289         if (odata == null)
 290         {
 291           tree = new NJTree(av.getAlignment().getSequencesArray(), newtree);
 292         }
 293         else
 294         {
 295           tree = new NJTree(av.getAlignment().getSequencesArray(), odata,
 296                   newtree);
 297         }
 298         if (!tree.hasOriginalSequenceData())
 299         {
 300           allowOriginalSeqData(false);
 301         }
 302       }
 303       else
 304       {
 305         int start, end;
 306         SequenceI[] seqs;
 307         boolean selview = av.getSelectionGroup() != null
 308                 && av.getSelectionGroup().getSize() > 1;
 309         AlignmentView seqStrings = av.getAlignmentView(selview);
 310         if (!selview)
 311         {
 312           start = 0;
 313           end = av.getAlignment().getWidth();
 314           seqs = av.getAlignment().getSequencesArray();
 315         }
 316         else
 317         {
 318           start = av.getSelectionGroup().getStartRes();
 319           end = av.getSelectionGroup().getEndRes() + 1;
 320           seqs = av.getSelectionGroup().getSequencesInOrder(
 321                   av.getAlignment());
 322         }
 323         ScoreModelI sm = ResidueProperties.getScoreModel(pwtype);
 324         if (sm instanceof ViewBasedAnalysisI)
 325         {
 326           try
 327           {
 328             sm = sm.getClass().newInstance();
 329             ((ViewBasedAnalysisI) sm)
 330                     .configureFromAlignmentView(treeCanvas.ap);
 331           } catch (Exception q)
 332           {
 333             Cache.log.error("Couldn't create a scoremodel instance for "
 334                     + sm.getName());
 335           }
 336           tree = new NJTree(seqs, seqStrings, type, pwtype, sm, start, end);
 337         }
 338         else
 339         {
 340           tree = new NJTree(seqs, seqStrings, type, pwtype, null, start,
 341                   end);
 342         }
 343         showDistances(true);
 344       }
 345
 346       tree.reCount(tree.getTopNode());
 347       tree.findHeight(tree.getTopNode());
 348       treeCanvas.setTree(tree);
 349       treeCanvas.repaint();
 350       av.setCurrentTree(tree);
 351       if (av.getSortByTree())
 352       {
 353         sortByTree_actionPerformed();
 354       }
 355     }
 356   }
 357
 358   public void showDistances(boolean b)
 359   {
 360     treeCanvas.setShowDistances(b);
 361     distanceMenu.setSelected(b);
 362   }
 363
 364   public void showBootstrap(boolean b)
 365   {
 366     treeCanvas.setShowBootstrap(b);
 367     bootstrapMenu.setSelected(b);
 368   }
 369
 370   public void showPlaceholders(boolean b)
 371   {
 372     placeholdersMenu.setState(b);
 373     treeCanvas.setMarkPlaceholders(b);
 374   }
 375
 376   private void allowOriginalSeqData(boolean b)
 377   {
 378     originalSeqData.setVisible(b);
 379   }
 380
 381   /**
 382    * DOCUMENT ME!
 383    *
 384    * @return DOCUMENT ME!
 385    */
 386   public NJTree getTree()
 387   {
 388     return tree;
 389   }
 390
 391   /**
 392    * DOCUMENT ME!
 393    *
 394    * @param e
 395    *          DOCUMENT ME!
 396    */
 397   @Override
 398   public void textbox_actionPerformed(ActionEvent e)
 399   {
 400     CutAndPasteTransfer cap = new CutAndPasteTransfer();
 401
 402     StringBuffer buffer = new StringBuffer();
 403
 404     if (type.equals("AV"))
 405     {
 406       buffer.append("Average distance tree using ");
 407     }
 408     else
 409     {
 410       buffer.append("Neighbour joining tree using ");
 411     }
 412
 413     if (pwtype.equals("BL"))
 414     {
 415       buffer.append("BLOSUM62");
 416     }
 417     else
 418     {
 419       buffer.append("PID");
 420     }
 421
 422     jalview.io.NewickFile fout = new jalview.io.NewickFile(
 423             tree.getTopNode());
 424     try
 425     {
 426       cap.setText(fout.print(tree.isHasBootstrap(), tree.isHasDistances(),
 427               tree.isHasRootDistance()));
 428       Desktop.addInternalFrame(cap, buffer.toString(), 500, 100);
 429     } catch (OutOfMemoryError oom)
 430     {
 431       new OOMWarning("generating newick tree file", oom);
 432       cap.dispose();
 433     }
 434
 435   }
 436
 437   /**
 438    * DOCUMENT ME!
 439    *
 440    * @param e
 441    *          DOCUMENT ME!
 442    */
 443   @Override
 444   public void saveAsNewick_actionPerformed(ActionEvent e)
 445   {
 446     JalviewFileChooser chooser = new JalviewFileChooser(
 447             jalview.bin.Cache.getProperty("LAST_DIRECTORY"));
 448     chooser.setFileView(new JalviewFileView());
 449     chooser.setDialogTitle(MessageManager
 450             .getString("label.save_tree_as_newick"));
 451     chooser.setToolTipText(MessageManager.getString("action.save"));
 452
 453     int value = chooser.showSaveDialog(null);
 454
 455     if (value == JalviewFileChooser.APPROVE_OPTION)
 456     {
 457       String choice = chooser.getSelectedFile().getPath();
 458       jalview.bin.Cache.setProperty("LAST_DIRECTORY", chooser
 459               .getSelectedFile().getParent());
 460
 461       try
 462       {
 463         jalview.io.NewickFile fout = new jalview.io.NewickFile(
 464                 tree.getTopNode());
 465         String output = fout.print(tree.isHasBootstrap(),
 466                 tree.isHasDistances(), tree.isHasRootDistance());
 467         java.io.PrintWriter out = new java.io.PrintWriter(
 468                 new java.io.FileWriter(choice));
 469         out.println(output);
 470         out.close();
 471       } catch (Exception ex)
 472       {
 473         ex.printStackTrace();
 474       }
 475     }
 476   }
 477
 478   /**
 479    * DOCUMENT ME!
 480    *
 481    * @param e
 482    *          DOCUMENT ME!
 483    */
 484   @Override
 485   public void printMenu_actionPerformed(ActionEvent e)
 486   {
 487     // Putting in a thread avoids Swing painting problems
 488     treeCanvas.startPrinting();
 489   }
 490
 491   @Override
 492   public void originalSeqData_actionPerformed(ActionEvent e)
 493   {
 494     if (!tree.hasOriginalSequenceData())
 495     {
 496       jalview.bin.Cache.log
 497               .info("Unexpected call to originalSeqData_actionPerformed - should have hidden this menu action.");
 498       return;
 499     }
 500     // decide if av alignment is sufficiently different to original data to
 501     // warrant a new window to be created
 502     // create new alignmnt window with hidden regions (unhiding hidden regions
 503     // yields unaligned seqs)
 504     // or create a selection box around columns in alignment view
 505     // test Alignment(SeqCigar[])
 506     char gc = '-';
 507     try
 508     {
 509       // we try to get the associated view's gap character
 510       // but this may fail if the view was closed...
 511       gc = av.getGapCharacter();
 512
 513     } catch (Exception ex)
 514     {
 515     }
 516     ;
 517     Object[] alAndColsel = tree.seqData.getAlignmentAndColumnSelection(gc);
 518
 519     if (alAndColsel != null && alAndColsel[0] != null)
 520     {
 521       // AlignmentOrder origorder = new AlignmentOrder(alAndColsel[0]);
 522
 523       Alignment al = new Alignment((SequenceI[]) alAndColsel[0]);
 524       Alignment dataset = (av != null && av.getAlignment() != null) ? av
 525               .getAlignment().getDataset() : null;
 526       if (dataset != null)
 527       {
 528         al.setDataset(dataset);
 529       }
 530
 531       if (true)
 532       {
 533         // make a new frame!
 534         AlignFrame af = new AlignFrame(al,
 535                 (ColumnSelection) alAndColsel[1], AlignFrame.DEFAULT_WIDTH,
 536                 AlignFrame.DEFAULT_HEIGHT);
 537
 538         // >>>This is a fix for the moment, until a better solution is
 539         // found!!<<<
 540         // af.getFeatureRenderer().transferSettings(alignFrame.getFeatureRenderer());
 541
 542         // af.addSortByOrderMenuItem(ServiceName + " Ordering",
 543         // msaorder);
 544
 545         Desktop.addInternalFrame(af, MessageManager.formatMessage(
 546                 "label.original_data_for_params",
 547                 new Object[] { this.title }), AlignFrame.DEFAULT_WIDTH,
 548                 AlignFrame.DEFAULT_HEIGHT);
 549       }
 550     }
 551   }
 552
 553   /**
 554    * DOCUMENT ME!
 555    *
 556    * @param e
 557    *          DOCUMENT ME!
 558    */
 559   @Override
 560   public void fitToWindow_actionPerformed(ActionEvent e)
 561   {
 562     treeCanvas.fitToWindow = fitToWindow.isSelected();
 563     repaint();
 564   }
 565
 566   /**
 567    * sort the associated alignment view by the current tree.
 568    *
 569    * @param e
 570    */
 571   @Override
 572   public void sortByTree_actionPerformed()
 573   {
 574
 575     if (treeCanvas.applyToAllViews)
 576     {
 577       final ArrayList<CommandI> commands = new ArrayList<CommandI>();
 578       for (AlignmentPanel ap : PaintRefresher.getAssociatedPanels(av
 579               .getSequenceSetId()))
 580       {
 581         commands.add(sortAlignmentIn(ap.av.getAlignPanel()));
 582       }
 583       av.getAlignPanel().alignFrame.addHistoryItem(new CommandI()
 584       {
 585
 586         @Override
 587         public void undoCommand(AlignmentI[] views)
 588         {
 589           for (CommandI tsort : commands)
 590           {
 591             tsort.undoCommand(views);
 592           }
 593         }
 594
 595         @Override
 596         public int getSize()
 597         {
 598           return commands.size();
 599         }
 600
 601         @Override
 602         public String getDescription()
 603         {
 604           return "Tree Sort (many views)";
 605         }
 606
 607         @Override
 608         public void doCommand(AlignmentI[] views)
 609         {
 610
 611           for (CommandI tsort : commands)
 612           {
 613             tsort.doCommand(views);
 614           }
 615         }
 616       });
 617       for (AlignmentPanel ap : PaintRefresher.getAssociatedPanels(av
 618               .getSequenceSetId()))
 619       {
 620         // ensure all the alignFrames refresh their GI after adding an undo item
 621         ap.alignFrame.updateEditMenuBar();
 622       }
 623     }
 624     else
 625     {
 626       treeCanvas.ap.alignFrame
 627               .addHistoryItem(sortAlignmentIn(treeCanvas.ap));
 628     }
 629
 630   }
 631
 632   public CommandI sortAlignmentIn(AlignmentPanel ap)
 633   {
 634     AlignmentViewport av = ap.av;
 635     SequenceI[] oldOrder = av.getAlignment().getSequencesArray();
 636     AlignmentSorter.sortByTree(av.getAlignment(), tree);
 637     CommandI undo;
 638     undo = new OrderCommand("Tree Sort", oldOrder, av.getAlignment());
 639
 640     ap.paintAlignment(true);
 641     return undo;
 642   }
 643
 644   /**
 645    * DOCUMENT ME!
 646    *
 647    * @param e
 648    *          DOCUMENT ME!
 649    */
 650   @Override
 651   public void font_actionPerformed(ActionEvent e)
 652   {
 653     if (treeCanvas == null)
 654     {
 655       return;
 656     }
 657
 658     new FontChooser(this);
 659   }
 660
 661   public Font getTreeFont()
 662   {
 663     return treeCanvas.font;
 664   }
 665
 666   public void setTreeFont(Font font)
 667   {
 668     if (treeCanvas != null)
 669     {
 670       treeCanvas.setFont(font);
 671     }
 672   }
 673
 674   /**
 675    * DOCUMENT ME!
 676    *
 677    * @param e
 678    *          DOCUMENT ME!
 679    */
 680   @Override
 681   public void distanceMenu_actionPerformed(ActionEvent e)
 682   {
 683     treeCanvas.setShowDistances(distanceMenu.isSelected());
 684   }
 685
 686   /**
 687    * DOCUMENT ME!
 688    *
 689    * @param e
 690    *          DOCUMENT ME!
 691    */
 692   @Override
 693   public void bootstrapMenu_actionPerformed(ActionEvent e)
 694   {
 695     treeCanvas.setShowBootstrap(bootstrapMenu.isSelected());
 696   }
 697
 698   /**
 699    * DOCUMENT ME!
 700    *
 701    * @param e
 702    *          DOCUMENT ME!
 703    */
 704   @Override
 705   public void placeholdersMenu_actionPerformed(ActionEvent e)
 706   {
 707     treeCanvas.setMarkPlaceholders(placeholdersMenu.isSelected());
 708   }
 709
 710   /**
 711    * DOCUMENT ME!
 712    *
 713    * @param e
 714    *          DOCUMENT ME!
 715    */
 716   @Override
 717   public void epsTree_actionPerformed(ActionEvent e)
 718   {
 719     boolean accurateText = true;
 720
 721     String renderStyle = jalview.bin.Cache.getDefault("EPS_RENDERING",
 722             "Prompt each time");
 723
 724     // If we need to prompt, and if the GUI is visible then
 725     // Prompt for EPS rendering style
 726     if (renderStyle.equalsIgnoreCase("Prompt each time")
 727             && !(System.getProperty("java.awt.headless") != null && System
 728                     .getProperty("java.awt.headless").equals("true")))
 729     {
 730       EPSOptions eps = new EPSOptions();
 731       renderStyle = eps.getValue();
 732
 733       if (renderStyle == null || eps.cancelled)
 734       {
 735         return;
 736       }
 737
 738     }
 739
 740     if (renderStyle.equalsIgnoreCase("text"))
 741     {
 742       accurateText = false;
 743     }
 744
 745     int width = treeCanvas.getWidth();
 746     int height = treeCanvas.getHeight();
 747
 748     try
 749     {
 750       jalview.io.JalviewFileChooser chooser = new jalview.io.JalviewFileChooser(
 751               jalview.bin.Cache.getProperty("LAST_DIRECTORY"), new String[]
 752               { "eps" }, new String[] { "Encapsulated Postscript" },
 753               "Encapsulated Postscript");
 754       chooser.setFileView(new jalview.io.JalviewFileView());
 755       chooser.setDialogTitle(MessageManager
 756               .getString("label.create_eps_from_tree"));
 757       chooser.setToolTipText(MessageManager.getString("action.save"));
 758
 759       int value = chooser.showSaveDialog(this);
 760
 761       if (value != jalview.io.JalviewFileChooser.APPROVE_OPTION)
 762       {
 763         return;
 764       }
 765
 766       jalview.bin.Cache.setProperty("LAST_DIRECTORY", chooser
 767               .getSelectedFile().getParent());
 768
 769       FileOutputStream out = new FileOutputStream(chooser.getSelectedFile());
 770       EpsGraphics2D pg = new EpsGraphics2D("Tree", out, 0, 0, width, height);
 771
 772       pg.setAccurateTextMode(accurateText);
 773
 774       treeCanvas.draw(pg, width, height);
 775
 776       pg.flush();
 777       pg.close();
 778     } catch (Exception ex)
 779     {
 780       ex.printStackTrace();
 781     }
 782   }
 783
 784   /**
 785    * DOCUMENT ME!
 786    *
 787    * @param e
 788    *          DOCUMENT ME!
 789    */
 790   @Override
 791   public void pngTree_actionPerformed(ActionEvent e)
 792   {
 793     int width = treeCanvas.getWidth();
 794     int height = treeCanvas.getHeight();
 795
 796     try
 797     {
 798       jalview.io.JalviewFileChooser chooser = new jalview.io.JalviewFileChooser(
 799               jalview.bin.Cache.getProperty("LAST_DIRECTORY"), new String[]
 800               { "png" }, new String[] { "Portable network graphics" },
 801               "Portable network graphics");
 802
 803       chooser.setFileView(new jalview.io.JalviewFileView());
 804       chooser.setDialogTitle(MessageManager
 805               .getString("label.create_png_from_tree"));
 806       chooser.setToolTipText(MessageManager.getString("action.save"));
 807
 808       int value = chooser.showSaveDialog(this);
 809
 810       if (value != jalview.io.JalviewFileChooser.APPROVE_OPTION)
 811       {
 812         return;
 813       }
 814
 815       jalview.bin.Cache.setProperty("LAST_DIRECTORY", chooser
 816               .getSelectedFile().getParent());
 817
 818       FileOutputStream out = new FileOutputStream(chooser.getSelectedFile());
 819
 820       BufferedImage bi = new BufferedImage(width, height,
 821               BufferedImage.TYPE_INT_RGB);
 822       Graphics png = bi.getGraphics();
 823
 824       treeCanvas.draw(png, width, height);
 825
 826       ImageIO.write(bi, "png", out);
 827       out.close();
 828     } catch (Exception ex)
 829     {
 830       ex.printStackTrace();
 831     }
 832   }
 833
 834   /**
 835    * change node labels to the annotation referred to by labelClass TODO:
 836    * promote to a datamodel modification that can be undone TODO: make argument
 837    * one case of a generic transformation function ie { undoStep = apply(Tree,
 838    * TransformFunction)};
 839    *
 840    * @param labelClass
 841    */
 842   public void changeNames(final String labelClass)
 843   {
 844     tree.applyToNodes(new NodeTransformI()
 845     {
 846
 847       @Override
 848       public void transform(BinaryNode node)
 849       {
 850         if (node instanceof SequenceNode
 851                 && !((SequenceNode) node).isPlaceholder()
 852                 && !((SequenceNode) node).isDummy())
 853         {
 854           String newname = null;
 855           SequenceI sq = (SequenceI) ((SequenceNode) node).element();
 856           if (sq != null)
 857           {
 858             // search dbrefs, features and annotation
 859             DBRefEntry[] refs = jalview.util.DBRefUtils.selectRefs(
 860                     sq.getDBRefs(),
 861                     new String[] { labelClass.toUpperCase() });
 862             if (refs != null)
 863             {
 864               for (int i = 0; i < refs.length; i++)
 865               {
 866                 if (newname == null)
 867                 {
 868                   newname = new String(refs[i].getAccessionId());
 869                 }
 870                 else
 871                 {
 872                   newname = newname + "; " + refs[i].getAccessionId();
 873                 }
 874               }
 875             }
 876             if (newname == null)
 877             {
 878               SequenceFeature sf[] = sq.getSequenceFeatures();
 879               for (int i = 0; sf != null && i < sf.length; i++)
 880               {
 881                 if (sf[i].getType().equals(labelClass))
 882                 {
 883                   if (newname == null)
 884                   {
 885                     newname = new String(sf[i].getDescription());
 886                   }
 887                   else
 888                   {
 889                     newname = newname + "; " + sf[i].getDescription();
 890                   }
 891                 }
 892               }
 893             }
 894           }
 895           if (newname != null)
 896           {
 897             String oldname = ((SequenceNode) node).getName();
 898             // TODO : save in the undo object for this modification.
 899             ((SequenceNode) node).setName(newname);
 900           }
 901         }
 902       }
 903     });
 904   }
 905 }