+ /*
+ * If there is one, scroll the (Protein/cDNA) complementary alignment to
+ * match, unless we are ourselves doing that.
+ */
+ if (isFollowingComplementScroll())
+ {
+ setFollowingComplementScroll(false);
+ }
+ else
+ {
+ AlignmentPanel ap = getComplementPanel();
+ av.scrollComplementaryAlignment(ap);
+ }
+
+ }
+
+ /**
+ * A helper method to return the AlignmentPanel in the other (complementary)
+ * half of a SplitFrame view. Returns null if not in a SplitFrame.
+ *
+ * @return
+ */
+ private AlignmentPanel getComplementPanel()
+ {
+ AlignmentPanel ap = null;
+ if (alignFrame != null)
+ {
+ SplitFrame sf = alignFrame.getSplitFrame();
+ if (sf != null)
+ {
+ AlignFrame other = sf.getComplement(alignFrame);
+ if (other != null)
+ {
+ ap = other.alignPanel;
+ }
+ }
+ }
+ return ap;
+ }
+
+ /**
+ * Follow a scrolling change in the (cDNA/Protein) complementary alignment.
+ * The aim is to keep the two alignments 'lined up' on their centre columns.
+ *
+ * @param sr
+ * holds mapped region(s) of this alignment that we are scrolling
+ * 'to'; may be modified for sequence offset by this method
+ * @param seqOffset
+ * the number of visible sequences to show above the mapped region
+ */
+ protected void scrollToCentre(SearchResults sr, int seqOffset)
+ {
+ /*
+ * To avoid jumpy vertical scrolling (if some sequences are gapped or not
+ * mapped), we can make the scroll-to location a sequence above the one
+ * actually mapped.
+ */
+ SequenceI mappedTo = sr.getResultSequence(0);
+ List<SequenceI> seqs = av.getAlignment().getSequences();
+
+ /*
+ * This is like AlignmentI.findIndex(seq) but here we are matching the
+ * dataset sequence not the aligned sequence
+ */
+ int sequenceIndex = 0;
+ boolean matched = false;
+ for (SequenceI seq : seqs)
+ {
+ if (mappedTo == seq.getDatasetSequence())
+ {
+ matched = true;
+ break;
+ }
+ sequenceIndex++;
+ }
+ if (!matched)
+ {
+ return; // failsafe, shouldn't happen
+ }
+ sequenceIndex = Math.max(0, sequenceIndex - seqOffset);
+ sr.getResults().get(0)
+ .setSequence(av.getAlignment().getSequenceAt(sequenceIndex));
+
+ /*
+ * Scroll to position but centring the target residue. Also set a state flag
+ * to prevent adjustmentValueChanged performing this recursively.
+ */
+ setFollowingComplementScroll(true);
+ scrollToPosition(sr, true, true);