+ type = NUCLEOTIDE;
+ }
+ else
+ {
+ type = PROTEIN;
+ }
+ }
+
+ @Override
+ public boolean isNucleotide()
+ {
+ if (type == NUCLEOTIDE)
+ {
+ return true;
+ }
+ else
+ {
+ return false;
+ }
+ }
+
+ @Override
+ public boolean hasRNAStructure()
+ {
+ // TODO can it happen that structure is removed from alignment?
+ return hasRNAStructure;
+ }
+
+ @Override
+ public void setDataset(Alignment data)
+ {
+ if (dataset == null && data == null)
+ {
+ // Create a new dataset for this alignment.
+ // Can only be done once, if dataset is not null
+ // This will not be performed
+ SequenceI[] seqs = new SequenceI[getHeight()];
+ SequenceI currentSeq;
+ for (int i = 0; i < getHeight(); i++)
+ {
+ currentSeq = getSequenceAt(i);
+ if (currentSeq.getDatasetSequence() != null)
+ {
+ seqs[i] = currentSeq.getDatasetSequence();
+ }
+ else
+ {
+ seqs[i] = currentSeq.createDatasetSequence();
+ }
+ }
+
+ dataset = new Alignment(seqs);
+ }
+ else if (dataset == null && data != null)
+ {
+ dataset = data;
+ for (int i = 0; i < getHeight(); i++)
+ {
+ SequenceI currentSeq = getSequenceAt(i);
+ SequenceI dsq = currentSeq.getDatasetSequence();
+ if (dsq == null)
+ {
+ dsq = currentSeq.createDatasetSequence();
+ dataset.addSequence(dsq);
+ }
+ else
+ {
+ while (dsq.getDatasetSequence() != null)
+ {
+ dsq = dsq.getDatasetSequence();
+ }
+ if (dataset.findIndex(dsq) == -1)
+ {
+ dataset.addSequence(dsq);
+ }
+ }
+ }
+ }
+ dataset.addAlignmentRef();
+ }
+
+ /**
+ * reference count for number of alignments referencing this one.
+ */
+ int alignmentRefs = 0;
+
+ /**
+ * increase reference count to this alignment.
+ */
+ private void addAlignmentRef()
+ {
+ alignmentRefs++;
+ }
+
+ @Override
+ public Alignment getDataset()
+ {
+ return dataset;
+ }
+
+ @Override
+ public boolean padGaps()
+ {
+ boolean modified = false;
+
+ // Remove excess gaps from the end of alignment
+ int maxLength = -1;
+
+ SequenceI current;
+ for (int i = 0; i < sequences.size(); i++)
+ {
+ current = getSequenceAt(i);
+ for (int j = current.getLength(); j > maxLength; j--)
+ {
+ if (j > maxLength
+ && !jalview.util.Comparison.isGap(current.getCharAt(j)))
+ {
+ maxLength = j;
+ break;
+ }
+ }
+ }
+
+ maxLength++;
+
+ int cLength;
+ for (int i = 0; i < sequences.size(); i++)
+ {
+ current = getSequenceAt(i);
+ cLength = current.getLength();
+
+ if (cLength < maxLength)
+ {
+ current.insertCharAt(cLength, maxLength - cLength, gapCharacter);
+ modified = true;
+ }
+ else if (current.getLength() > maxLength)
+ {
+ current.deleteChars(maxLength, current.getLength());
+ }
+ }
+ return modified;
+ }
+
+ /**
+ * Justify the sequences to the left or right by deleting and inserting gaps
+ * before the initial residue or after the terminal residue
+ *
+ * @param right
+ * true if alignment padded to right, false to justify to left
+ * @return true if alignment was changed
+ */
+ @Override
+ public boolean justify(boolean right)
+ {
+ boolean modified = false;
+
+ // Remove excess gaps from the end of alignment
+ int maxLength = -1;
+ int ends[] = new int[sequences.size() * 2];
+ SequenceI current;
+ for (int i = 0; i < sequences.size(); i++)
+ {
+ current = getSequenceAt(i);
+ // This should really be a sequence method
+ ends[i * 2] = current.findIndex(current.getStart());
+ ends[i * 2 + 1] = current.findIndex(current.getStart()
+ + current.getLength());
+ boolean hitres = false;
+ for (int j = 0, rs = 0, ssiz = current.getLength(); j < ssiz; j++)