2 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
3 * Copyright (C) $$Year-Rel$$ The Jalview Authors
5 * This file is part of Jalview.
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.
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.
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.
21 package jalview.ext.rbvi.chimera;
23 import jalview.api.AlignmentViewPanel;
24 import jalview.api.structures.JalviewStructureDisplayI;
25 import jalview.bin.Cache;
26 import jalview.datamodel.AlignmentI;
27 import jalview.datamodel.HiddenColumns;
28 import jalview.datamodel.PDBEntry;
29 import jalview.datamodel.SearchResultMatchI;
30 import jalview.datamodel.SearchResultsI;
31 import jalview.datamodel.SequenceFeature;
32 import jalview.datamodel.SequenceI;
33 import jalview.gui.StructureViewer.ViewerType;
34 import jalview.httpserver.AbstractRequestHandler;
35 import jalview.io.DataSourceType;
36 import jalview.structure.AtomSpec;
37 import jalview.structure.StructureCommandsI.SuperposeData;
38 import jalview.structure.StructureSelectionManager;
39 import jalview.structures.models.AAStructureBindingModel;
40 import jalview.util.MessageManager;
43 import java.io.FileOutputStream;
44 import java.io.IOException;
45 import java.io.PrintWriter;
46 import java.net.BindException;
47 import java.util.ArrayList;
48 import java.util.BitSet;
49 import java.util.Collections;
50 import java.util.Iterator;
51 import java.util.LinkedHashMap;
52 import java.util.List;
55 import ext.edu.ucsf.rbvi.strucviz2.ChimeraManager;
56 import ext.edu.ucsf.rbvi.strucviz2.ChimeraModel;
57 import ext.edu.ucsf.rbvi.strucviz2.StructureManager;
58 import ext.edu.ucsf.rbvi.strucviz2.StructureManager.ModelType;
60 public abstract class JalviewChimeraBinding extends AAStructureBindingModel
62 public static final String CHIMERA_FEATURE_GROUP = "Chimera";
64 // Chimera clause to exclude alternate locations in atom selection
65 private static final String NO_ALTLOCS = "&~@.B-Z&~@.2-9";
67 private static final boolean debug = false;
69 private static final String PHOSPHORUS = "P";
71 private static final String ALPHACARBON = "CA";
74 * Object through which we talk to Chimera
76 private ChimeraManager chimeraManager;
79 * Object which listens to Chimera notifications
81 private AbstractRequestHandler chimeraListener;
84 * Map of ChimeraModel objects keyed by PDB full local file name
86 protected Map<String, List<ChimeraModel>> chimeraMaps = new LinkedHashMap<>();
88 String lastHighlightCommand;
90 private Thread chimeraMonitor;
93 * Open a PDB structure file in Chimera and set up mappings from Jalview.
95 * We check if the PDB model id is already loaded in Chimera, if so don't reopen
96 * it. This is the case if Chimera has opened a saved session file.
101 public boolean openFile(PDBEntry pe)
103 String file = pe.getFile();
106 List<ChimeraModel> modelsToMap = new ArrayList<>();
107 List<ChimeraModel> oldList = chimeraManager.getModelList();
108 boolean alreadyOpen = false;
111 * If Chimera already has this model, don't reopen it, but do remap it.
113 for (ChimeraModel open : oldList)
115 if (open.getModelName().equals(pe.getId()))
118 modelsToMap.add(open);
123 * If Chimera doesn't yet have this model, ask it to open it, and retrieve
124 * the model name(s) added by Chimera.
128 chimeraManager.openModel(file, pe.getId(), ModelType.PDB_MODEL);
129 addChimeraModel(pe, modelsToMap);
132 chimeraMaps.put(file, modelsToMap);
134 if (getSsm() != null)
136 getSsm().addStructureViewerListener(this);
139 } catch (Exception q)
141 log("Exception when trying to open model " + file + "\n"
149 * Adds the ChimeraModel corresponding to the given PDBEntry, based on model
150 * name matching PDB id
155 protected void addChimeraModel(PDBEntry pe,
156 List<ChimeraModel> modelsToMap)
159 * Chimera: query for actual models and find the one with
160 * matching model name - already set in viewer.openModel()
162 List<ChimeraModel> newList = chimeraManager.getModelList();
163 // JAL-1728 newList.removeAll(oldList) does not work
164 for (ChimeraModel cm : newList)
166 if (cm.getModelName().equals(pe.getId()))
181 public JalviewChimeraBinding(StructureSelectionManager ssm,
182 PDBEntry[] pdbentry, SequenceI[][] sequenceIs,
183 DataSourceType protocol)
185 super(ssm, pdbentry, sequenceIs, protocol);
186 chimeraManager = new ChimeraManager(new StructureManager(true));
187 chimeraManager.setChimeraX(ViewerType.CHIMERAX.equals(getViewerType()));
188 setStructureCommands(new ChimeraCommands());
192 protected ViewerType getViewerType()
194 return ViewerType.CHIMERA;
198 * Starts a thread that waits for the Chimera process to finish, so that we can
199 * then close the associated resources. This avoids leaving orphaned Chimera
200 * viewer panels in Jalview if the user closes Chimera.
202 protected void startChimeraProcessMonitor()
204 final Process p = chimeraManager.getChimeraProcess();
205 chimeraMonitor = new Thread(new Runnable()
214 JalviewStructureDisplayI display = getViewer();
217 display.closeViewer(false);
219 } catch (InterruptedException e)
221 // exit thread if Chimera Viewer is closed in Jalview
225 chimeraMonitor.start();
229 * Start a dedicated HttpServer to listen for Chimera notifications, and tell it
232 public void startChimeraListener()
236 chimeraListener = new ChimeraListener(this);
237 chimeraManager.startListening(chimeraListener.getUri());
238 } catch (BindException e)
241 "Failed to start Chimera listener: " + e.getMessage());
246 * Close down the Jalview viewer and listener, and (optionally) the associated
249 public void closeViewer(boolean closeChimera)
251 getSsm().removeStructureViewerListener(this, this.getStructureFiles());
254 chimeraManager.exitChimera();
256 if (this.chimeraListener != null)
258 chimeraListener.shutdown();
259 chimeraListener = null;
261 chimeraManager = null;
263 if (chimeraMonitor != null)
265 chimeraMonitor.interrupt();
267 releaseUIResources();
273 public String superposeStructures(AlignmentI[] _alignment,
274 int[] _refStructure, HiddenColumns[] _hiddenCols)
276 // TODO delete method
277 StringBuilder allComs = new StringBuilder(128);
278 String[] files = getStructureFiles();
280 if (!waitForFileLoad(files))
286 StringBuilder selectioncom = new StringBuilder(256);
287 boolean chimeraX = chimeraManager.isChimeraX();
288 for (int a = 0; a < _alignment.length; a++)
290 int refStructure = _refStructure[a];
291 AlignmentI alignment = _alignment[a];
292 HiddenColumns hiddenCols = _hiddenCols[a];
294 if (refStructure >= files.length)
296 System.err.println("Ignoring invalid reference structure value "
302 * 'matched' bit i will be set for visible alignment columns i where
303 * all sequences have a residue with a mapping to the PDB structure
305 BitSet matched = new BitSet();
306 for (int m = 0; m < alignment.getWidth(); m++)
308 if (hiddenCols == null || hiddenCols.isVisible(m))
314 SuperposeData[] structures = new SuperposeData[files.length];
315 for (int f = 0; f < files.length; f++)
317 structures[f] = new SuperposeData(alignment.getWidth(), f);
321 * Calculate the superposable alignment columns ('matched'), and the
322 * corresponding structure residue positions (structures.pdbResNo)
324 int candidateRefStructure = findSuperposableResidues(alignment,
325 matched, structures);
326 if (refStructure < 0)
329 * If no reference structure was specified, pick the first one that has
330 * a mapping in the alignment
332 refStructure = candidateRefStructure;
335 int nmatched = matched.cardinality();
338 return MessageManager.formatMessage("label.insufficient_residues",
343 * Generate select statements to select regions to superimpose structures
345 String[] selcom = new String[files.length];
346 for (int pdbfnum = 0; pdbfnum < files.length; pdbfnum++)
348 final int modelNo = pdbfnum + (chimeraX ? 1 : 0);
349 // todo correct resolution to model number
350 String chainCd = "." + structures[pdbfnum].chain;
353 StringBuilder molsel = new StringBuilder();
356 molsel.append("/" + structures[pdbfnum].chain + ":");
359 int nextColumnMatch = matched.nextSetBit(0);
360 while (nextColumnMatch != -1)
362 int pdbResNum = structures[pdbfnum].pdbResNo[nextColumnMatch];
363 if (lpos != pdbResNum - 1)
366 * discontiguous - append last residue now
370 molsel.append(String.valueOf(lpos));
373 molsel.append(chainCd);
382 * extending a contiguous run
387 * start the range selection
389 molsel.append(String.valueOf(lpos));
395 nextColumnMatch = matched.nextSetBit(nextColumnMatch + 1);
399 * and terminate final selection
403 molsel.append(String.valueOf(lpos));
406 molsel.append(chainCd);
409 if (molsel.length() > 1)
411 selcom[pdbfnum] = molsel.toString();
412 selectioncom.append("#").append(String.valueOf(modelNo));
415 selectioncom.append(":");
417 selectioncom.append(selcom[pdbfnum]);
418 // selectioncom.append(" ");
419 if (pdbfnum < files.length - 1)
421 selectioncom.append("|");
426 selcom[pdbfnum] = null;
430 StringBuilder command = new StringBuilder(256);
431 for (int pdbfnum = 0; pdbfnum < files.length; pdbfnum++)
433 final int modelNo = pdbfnum + (chimeraX ? 1 : 0);
434 if (pdbfnum == refStructure || selcom[pdbfnum] == null
435 || selcom[refStructure] == null)
439 if (command.length() > 0)
445 * Form Chimera match command, from the 'new' structure to the
446 * 'reference' structure e.g. (50 residues, chain B/A, alphacarbons):
448 * match #1:1-30.B,81-100.B@CA #0:21-40.A,61-90.A@CA
451 * https://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/match.html
453 command.append(chimeraX ? "align " : "match ");
454 command.append(getModelSpec(modelNo));
459 command.append(selcom[pdbfnum]);
460 command.append("@").append(
461 structures[pdbfnum].isRna ? PHOSPHORUS : ALPHACARBON);
462 // JAL-1757 exclude alternate CA locations - ChimeraX syntax tbd
465 command.append(NO_ALTLOCS);
467 command.append(chimeraX ? " toAtoms " : " ")
468 .append(getModelSpec(refStructure + (chimeraX ? 1 : 0)));
473 command.append(selcom[refStructure]);
474 command.append("@").append(
475 structures[refStructure].isRna ? PHOSPHORUS : ALPHACARBON);
478 command.append(NO_ALTLOCS);
481 if (selectioncom.length() > 0)
485 System.out.println("Select regions:\n" + selectioncom.toString());
487 "Superimpose command(s):\n" + command.toString());
489 // allComs.append("~display all; ");
492 // allComs.append("show ").append(selectioncom.toString())
493 // .append(" pbonds");
497 // allComs.append("chain @CA|P; ribbon ");
498 // allComs.append(selectioncom.toString());
500 if (allComs.length() > 0) {
503 allComs.append(command.toString());
508 if (selectioncom.length() > 0)
510 // TODO: visually distinguish regions that were superposed
511 if (selectioncom.substring(selectioncom.length() - 1).equals("|"))
513 selectioncom.setLength(selectioncom.length() - 1);
517 System.out.println("Select regions:\n" + selectioncom.toString());
519 allComs.append(";~display all; ");
522 allComs.append("show @CA|P pbonds; show ")
523 .append(selectioncom.toString()).append(" ribbons; view");
527 allComs.append("chain @CA|P; ribbon ");
528 allComs.append(selectioncom.toString()).append("; focus");
530 // allComs.append("; ~display all; chain @CA|P; ribbon ")
531 // .append(selectioncom.toString()).append("; focus");
532 List<String> chimeraReplies = executeCommand(allComs.toString(),
534 for (String reply : chimeraReplies)
536 if (reply.toLowerCase().contains("unequal numbers of atoms"))
546 * Helper method to construct model spec in Chimera format:
548 * <li>#0 (#1 etc) for a PDB file with no sub-models</li>
549 * <li>#0.1 (#1.1 etc) for a PDB file with sub-models</li>
551 * Note for now we only ever choose the first of multiple models. This
552 * corresponds to the hard-coded Jmol equivalent (compare {1.1}). Refactor in
553 * future if there is a need to select specific sub-models.
558 protected String getModelSpec(int pdbfnum)
560 if (pdbfnum < 0 || pdbfnum >= getPdbCount())
562 return "#" + pdbfnum; // temp hack for ChimeraX
566 * For now, the test for having sub-models is whether multiple Chimera
567 * models are mapped for the PDB file; the models are returned as a response
568 * to the Chimera command 'list models type molecule', see
569 * ChimeraManager.getModelList().
571 List<ChimeraModel> maps = chimeraMaps.get(getStructureFiles()[pdbfnum]);
572 boolean hasSubModels = maps != null && maps.size() > 1;
573 return "#" + String.valueOf(pdbfnum) + (hasSubModels ? ".1" : "");
577 * Launch Chimera, unless an instance linked to this object is already
578 * running. Returns true if Chimera is successfully launched, or already
579 * running, else false.
583 public boolean launchChimera()
585 if (chimeraManager.isChimeraLaunched())
590 boolean launched = chimeraManager.launchChimera(getChimeraPaths());
593 startChimeraProcessMonitor();
597 log("Failed to launch Chimera!");
603 * Returns a list of candidate paths to the Chimera program executable
607 protected List<String> getChimeraPaths()
609 return StructureManager.getChimeraPaths(false);
613 * Answers true if the Chimera process is still running, false if ended or not
618 public boolean isChimeraRunning()
620 return chimeraManager.isChimeraLaunched();
624 * Send a command to Chimera, and optionally log and return any responses.
630 public List<String> executeCommand(final String command,
633 if (chimeraManager == null || command == null)
635 // ? thread running after viewer shut down
638 List<String> reply = null;
639 // trim command or it may never find a match in the replyLog!!
640 List<String> lastReply = chimeraManager
641 .sendChimeraCommand(command.trim(), getResponse);
647 log("Response from command ('" + command + "') was:\n" + lastReply);
657 protected void executeWhenReady(String command)
660 executeCommand(command, false);
664 private void waitForChimera()
666 while (chimeraManager != null && chimeraManager.isBusy())
671 } catch (InterruptedException q)
678 public synchronized String[] getStructureFiles()
680 if (chimeraManager == null)
682 return new String[0];
685 return chimeraMaps.keySet()
686 .toArray(modelFileNames = new String[chimeraMaps.size()]);
690 * Construct and send a command to highlight zero, one or more atoms. We do this
691 * by sending an "rlabel" command to show the residue label at that position.
694 public void highlightAtoms(List<AtomSpec> atoms)
696 if (atoms == null || atoms.size() == 0)
701 boolean forChimeraX = chimeraManager.isChimeraX();
702 StringBuilder cmd = new StringBuilder(128);
703 boolean first = true;
704 boolean found = false;
706 for (AtomSpec atom : atoms)
708 int pdbResNum = atom.getPdbResNum();
709 String chain = atom.getChain();
710 String pdbfile = atom.getPdbFile();
711 List<ChimeraModel> cms = chimeraMaps.get(pdbfile);
712 if (cms != null && !cms.isEmpty())
716 cmd.append(forChimeraX ? "label #" : "rlabel #");
725 cmd.append(cms.get(0).getModelNumber())
726 .append("/").append(chain).append(":").append(pdbResNum);
730 cmd.append(cms.get(0).getModelNumber())
731 .append(":").append(pdbResNum);
732 if (!chain.equals(" ") && !forChimeraX)
734 cmd.append(".").append(chain);
740 String command = cmd.toString();
743 * avoid repeated commands for the same residue
745 if (command.equals(lastHighlightCommand))
751 * unshow the label for the previous residue
753 if (lastHighlightCommand != null)
755 chimeraManager.sendChimeraCommand("~" + lastHighlightCommand, false);
759 chimeraManager.sendChimeraCommand(command, false);
761 this.lastHighlightCommand = command;
765 * Query Chimera for its current selection, and highlight it on the alignment
767 public void highlightChimeraSelection()
770 * Ask Chimera for its current selection
772 List<String> selection = chimeraManager.getSelectedResidueSpecs();
775 * Parse model number, residue and chain for each selected position,
776 * formatted as #0:123.A or #1.2:87.B (#model.submodel:residue.chain)
778 List<AtomSpec> atomSpecs = convertStructureResiduesToAlignment(
782 * Broadcast the selection (which may be empty, if the user just cleared all
785 getSsm().mouseOverStructure(atomSpecs);
789 * Converts a list of Chimera atomspecs to a list of AtomSpec representing the
790 * corresponding residues (if any) in Jalview
792 * @param structureSelection
795 protected List<AtomSpec> convertStructureResiduesToAlignment(
796 List<String> structureSelection)
798 boolean chimeraX = chimeraManager.isChimeraX();
799 List<AtomSpec> atomSpecs = new ArrayList<>();
800 for (String atomSpec : structureSelection)
804 AtomSpec spec = AtomSpec.fromChimeraAtomspec(atomSpec, chimeraX);
805 String pdbfilename = getPdbFileForModel(spec.getModelNumber());
806 spec.setPdbFile(pdbfilename);
808 } catch (IllegalArgumentException e)
810 System.err.println("Failed to parse atomspec: " + atomSpec);
820 protected String getPdbFileForModel(int modelId)
823 * Work out the pdbfilename from the model number
825 String pdbfilename = modelFileNames[0];
826 findfileloop: for (String pdbfile : this.chimeraMaps.keySet())
828 for (ChimeraModel cm : chimeraMaps.get(pdbfile))
830 if (cm.getModelNumber() == modelId)
832 pdbfilename = pdbfile;
840 private void log(String message)
842 System.err.println("## Chimera log: " + message);
846 * Ask Chimera to save its session to the given file. Returns true if
847 * successful, else false.
852 public boolean saveSession(String filepath)
854 if (isChimeraRunning())
857 * Chimera: https://www.cgl.ucsf.edu/chimera/current/docs/UsersGuide/midas/save.html
858 * ChimeraX: https://www.cgl.ucsf.edu/chimerax/docs/user/commands/save.html
860 String command = getCommandGenerator().saveSession(filepath);
861 List<String> reply = chimeraManager.sendChimeraCommand(command, true);
862 if (reply.contains("Session written"))
869 .error("Error saving Chimera session: " + reply.toString());
876 * Ask Chimera to open a session file. Returns true if successful, else false.
877 * The filename must have a .py (Chimera) or .cxs (ChimeraX) extension for
878 * this command to work.
883 public boolean openSession(String filepath)
886 * Chimera: https://www.cgl.ucsf.edu/chimera/current/docs/UsersGuide/midas/open.html
887 * ChimeraX: https://www.cgl.ucsf.edu/chimerax/docs/user/commands/open.html
889 executeCommand("open " + filepath, true);
890 // todo: test for failure - how?
895 * Send a 'show' command for all atoms in the currently selected columns
897 * TODO: pull up to abstract structure viewer interface
901 public void highlightSelection(AlignmentViewPanel vp)
903 List<Integer> cols = vp.getAlignViewport().getColumnSelection()
905 AlignmentI alignment = vp.getAlignment();
906 StructureSelectionManager sm = getSsm();
907 for (SequenceI seq : alignment.getSequences())
910 * convert selected columns into sequence positions
912 int[] positions = new int[cols.size()];
914 for (Integer col : cols)
916 positions[i++] = seq.findPosition(col);
918 sm.highlightStructure(this, seq, positions);
923 * Constructs and send commands to Chimera to set attributes on residues for
924 * features visible in Jalview
929 public int sendFeaturesToViewer(AlignmentViewPanel avp)
931 // TODO refactor as required to pull up to an interface
932 String[] files = getStructureFiles();
938 String[] commands = getCommandGenerator()
939 .setAttributesForFeatures(getSsm(), files, getSequence(), avp);
940 if (commands.length > 10)
942 sendCommandsByFile(commands);
946 for (String command : commands)
948 sendAsynchronousCommand(command, null);
951 return commands.length;
955 * Write commands to a temporary file, and send a command to Chimera to open the
956 * file as a commands script. For use when sending a large number of separate
957 * commands would overload the REST interface mechanism.
961 protected void sendCommandsByFile(String[] commands)
965 File tmp = File.createTempFile("chim", getCommandFileExtension());
967 PrintWriter out = new PrintWriter(new FileOutputStream(tmp));
968 for (String command : commands)
970 out.println(command);
974 String path = tmp.getAbsolutePath();
975 String command = getCommandGenerator().openCommandFile(path);
976 sendAsynchronousCommand(command, null);
977 } catch (IOException e)
979 System.err.println("Sending commands to Chimera via file failed with "
985 * Returns the file extension required for a file of commands to be read by
986 * the structure viewer
989 protected String getCommandFileExtension()
995 * Get Chimera residues which have the named attribute, find the mapped
996 * positions in the Jalview sequence(s), and set as sequence features
999 * @param alignmentPanel
1001 public void copyStructureAttributesToFeatures(String attName,
1002 AlignmentViewPanel alignmentPanel)
1004 // todo pull up to AAStructureBindingModel (and interface?)
1007 * ask Chimera to list residues with the attribute, reporting its value
1009 // this alternative command
1010 // list residues spec ':*/attName' attr attName
1011 // doesn't report 'None' values (which is good), but
1012 // fails for 'average.bfactor' (which is bad):
1014 String cmd = "list residues attr '" + attName + "'";
1015 List<String> residues = executeCommand(cmd, true);
1017 boolean featureAdded = createFeaturesForAttributes(attName, residues);
1020 alignmentPanel.getFeatureRenderer().featuresAdded();
1025 * Create features in Jalview for the given attribute name and structure
1029 * The residue list should be 0, 1 or more reply lines of the format:
1030 * residue id #0:5.A isHelix -155.000836316 index 5
1032 * residue id #0:6.A isHelix None
1039 protected boolean createFeaturesForAttributes(String attName,
1040 List<String> residues)
1042 boolean featureAdded = false;
1043 String featureGroup = getViewerFeatureGroup();
1044 boolean chimeraX = chimeraManager.isChimeraX();
1046 for (String residue : residues)
1048 AtomSpec spec = null;
1049 String[] tokens = residue.split(" ");
1050 if (tokens.length < 5)
1054 String atomSpec = tokens[2];
1055 String attValue = tokens[4];
1058 * ignore 'None' (e.g. for phi) or 'False' (e.g. for isHelix)
1060 if ("None".equalsIgnoreCase(attValue)
1061 || "False".equalsIgnoreCase(attValue))
1068 spec = AtomSpec.fromChimeraAtomspec(atomSpec, chimeraX);
1069 } catch (IllegalArgumentException e)
1071 System.err.println("Problem parsing atomspec " + atomSpec);
1075 String chainId = spec.getChain();
1076 String description = attValue;
1077 float score = Float.NaN;
1080 score = Float.valueOf(attValue);
1081 description = chainId;
1082 } catch (NumberFormatException e)
1084 // was not a float value
1087 String pdbFile = getPdbFileForModel(spec.getModelNumber());
1088 spec.setPdbFile(pdbFile);
1090 List<AtomSpec> atoms = Collections.singletonList(spec);
1093 * locate the mapped position in the alignment (if any)
1095 SearchResultsI sr = getSsm()
1096 .findAlignmentPositionsForStructurePositions(atoms);
1099 * expect one matched alignment position, or none
1100 * (if the structure position is not mapped)
1102 for (SearchResultMatchI m : sr.getResults())
1104 SequenceI seq = m.getSequence();
1105 int start = m.getStart();
1106 int end = m.getEnd();
1107 SequenceFeature sf = new SequenceFeature(attName, description,
1108 start, end, score, featureGroup);
1109 // todo: should SequenceFeature have an explicit property for chain?
1110 // note: repeating the action shouldn't duplicate features
1111 featureAdded |= seq.addSequenceFeature(sf);
1114 return featureAdded;
1118 * Answers the feature group name to apply to features created in Jalview from
1119 * Chimera attributes
1123 protected String getViewerFeatureGroup()
1125 // todo pull up to interface
1126 return CHIMERA_FEATURE_GROUP;
1130 public int getModelNoForFile(String pdbFile)
1132 List<ChimeraModel> foundModels = chimeraMaps.get(pdbFile);
1133 if (foundModels != null && !foundModels.isEmpty())
1135 return foundModels.get(0).getModelNumber();
1141 * Answers a (possibly empty) list of attribute names in Chimera[X], excluding
1142 * any which were added from Jalview
1146 public List<String> getChimeraAttributes()
1148 List<String> atts = chimeraManager.getAttrList();
1149 Iterator<String> it = atts.iterator();
1150 while (it.hasNext())
1152 if (it.next().startsWith(ChimeraCommands.NAMESPACE_PREFIX))
1155 * attribute added from Jalview - exclude it
1164 * Returns the file extension to use for a saved viewer session file
1168 public String getSessionFileExtension()
1173 public String getHelpURL()
1175 return "https://www.cgl.ucsf.edu/chimera/docs/UsersGuide";