+ if (pdbs == null || seqs == null || pdbs.length != seqs.length)
+ {
+ return null;
+ }
+
+ /*
+ * we want only one 'representative' PDBEntry per distinct file name
+ * (there may be entries for distinct chains)
+ */
+ Map<String, PDBEntry> pdbsSeen = new HashMap<>();
+
+ /*
+ * LinkedHashMap preserves order of PDB entries (significant if they
+ * will get superimposed to the first structure)
+ */
+ Map<PDBEntry, List<SequenceI>> pdbSeqs = new LinkedHashMap<>();
+ for (int i = 0; i < pdbs.length; i++)
+ {
+ PDBEntry pdb = pdbs[i];
+ SequenceI seq = seqs[i];
+ String pdbFile = pdb.getFile();
+ if (pdbFile == null || pdbFile.length() == 0)
+ {
+ pdbFile = pdb.getId();
+ }
+ if (!pdbsSeen.containsKey(pdbFile))
+ {
+ pdbsSeen.put(pdbFile, pdb);
+ pdbSeqs.put(pdb, new ArrayList<SequenceI>());
+ }
+ else
+ {
+ pdb = pdbsSeen.get(pdbFile);
+ }
+ List<SequenceI> seqsForPdb = pdbSeqs.get(pdb);
+ if (!seqsForPdb.contains(seq))
+ {
+ seqsForPdb.add(seq);
+ }
+ }
+
+ /*
+ * convert to Map<PDBEntry, SequenceI[]>
+ */
+ Map<PDBEntry, SequenceI[]> result = new LinkedHashMap<>();
+ for (Entry<PDBEntry, List<SequenceI>> entry : pdbSeqs.entrySet())
+ {
+ List<SequenceI> theSeqs = entry.getValue();
+ result.put(entry.getKey(),
+ theSeqs.toArray(new SequenceI[theSeqs.size()]));
+ }
+
+ return result;
+ }
+
+ /**
+ * A strictly temporary method pending JAL-1761 refactoring. Determines if all
+ * the passed PDB entries are the same (this is the case if selected sequences
+ * to view structure for are chains of the same structure). If so, calls the
+ * single-pdb version of viewStructures and returns the viewer, else returns
+ * null.
+ *
+ * @param pdbs
+ * @param seqsForPdbs
+ * @param ap
+ * @return
+ */
+ private JalviewStructureDisplayI onlyOnePdb(PDBEntry[] pdbs,
+ SequenceI[] seqsForPdbs, AlignmentPanel ap)
+ {
+ List<SequenceI> seqs = new ArrayList<SequenceI>();
+ if (pdbs == null || pdbs.length == 0)
+ {
+ return null;
+ }
+ int i = 0;
+ String firstFile = pdbs[0].getFile();
+ for (PDBEntry pdb : pdbs)
+ {
+ String pdbFile = pdb.getFile();
+ if (pdbFile == null || !pdbFile.equals(firstFile))
+ {
+ return null;
+ }
+ SequenceI pdbseq = seqsForPdbs[i++];
+ if (pdbseq != null)
+ {
+ seqs.add(pdbseq);
+ }
+ }
+ return viewStructures(pdbs[0], seqs.toArray(new SequenceI[seqs.size()]),
+ ap);
+ }
+
+ public JalviewStructureDisplayI viewStructures(PDBEntry pdb,
+ SequenceI[] seqsForPdb, AlignmentPanel ap)
+ {
+ ViewerType viewerType = getViewerType();