From c5b266dbd1a12ac4b5e0a070b10fa707a73cd889 Mon Sep 17 00:00:00 2001
From: jprocter <Jim Procter>
Date: Fri, 17 Dec 2010 13:17:29 +0000
Subject: [PATCH] refactored gap insert/visible view modification code from
 JPredThread

---
 src/jalview/datamodel/ColumnSelection.java |  116 ++++++++++++++++++++++++++++
 1 file changed, 116 insertions(+)

diff --git a/src/jalview/datamodel/ColumnSelection.java b/src/jalview/datamodel/ColumnSelection.java
index a36faf7..0bcbd5b 100644
--- a/src/jalview/datamodel/ColumnSelection.java
+++ b/src/jalview/datamodel/ColumnSelection.java
@@ -1112,4 +1112,120 @@ public class ColumnSelection
       }
     }
   }
+
+  /**
+   * Add gaps into the sequences aligned to profileseq under the given
+   * AlignmentView
+   * 
+   * @param profileseq
+   * @param al - alignment to have gaps inserted into it
+   * @param input - alignment view where sequence corresponding to profileseq is first entry
+   * @return new Column selection for new alignment view, with insertions into profileseq marked as hidden.
+   */
+  public static ColumnSelection propagateInsertions(SequenceI profileseq,
+          Alignment al, AlignmentView input)
+  {
+    int profsqpos=0;
+    
+//    return propagateInsertions(profileseq, al, )
+    char gc = al.getGapCharacter();
+    Object[] alandcolsel = input.getAlignmentAndColumnSelection(gc);
+    ColumnSelection nview = (ColumnSelection) alandcolsel[1];
+    SequenceI origseq = ((SequenceI[]) alandcolsel[0])[profsqpos];
+    nview.propagateInsertions(profileseq,
+            al, origseq);
+    return nview;
+  }
+  /**
+   * 
+   * @param profileseq - sequence in al which corresponds to origseq 
+   * @param al - alignment which is to have gaps inserted into it
+   * @param origseq - sequence corresponding to profileseq which defines gap map for modifying al
+   */
+  public void propagateInsertions(SequenceI profileseq, AlignmentI al, SequenceI origseq)
+  {
+    char gc = al.getGapCharacter();
+    // recover mapping between sequence's non-gap positions and positions 
+    // mapping to view.
+    pruneDeletions(ShiftList
+            .parseMap(origseq
+                    .gapMap())); 
+    int[] viscontigs = getVisibleContigs(0, profileseq.getLength());
+    int spos = 0;
+    int offset = 0;
+    // input.pruneDeletions(ShiftList.parseMap(((SequenceI[])
+    // alandcolsel[0])[0].gapMap()))
+    // add profile to visible contigs
+    for (int v = 0; v < viscontigs.length; v += 2)
+    {
+      if (viscontigs[v] > spos)
+      {
+        StringBuffer sb = new StringBuffer();
+        for (int s = 0, ns = viscontigs[v] - spos; s < ns; s++)
+        {
+          sb.append(gc);
+        }
+        for (int s = 0, ns = al.getHeight(); s < ns; s++)
+        {
+          SequenceI sqobj = al.getSequenceAt(s);
+          if (sqobj != profileseq)
+          {
+            String sq = al.getSequenceAt(s).getSequenceAsString();
+            if (sq.length() <= spos + offset)
+            {
+              // pad sequence
+              int diff = spos + offset - sq.length() - 1;
+              if (diff > 0)
+              {
+                // pad gaps
+                sq = sq + sb;
+                while ((diff = spos + offset - sq.length() - 1) > 0)
+                {
+                  sq = sq
+                          + ((diff >= sb.length()) ? sb.toString() : sb
+                                  .substring(0, diff));
+                }
+              }
+              sq += sb.toString();
+            }
+            else
+            {
+              al.getSequenceAt(s).setSequence(
+                      sq.substring(0, spos + offset) + sb.toString()
+                              + sq.substring(spos + offset));
+            }
+          }
+        }
+        // offset+=sb.length();
+      }
+      spos = viscontigs[v + 1] + 1;
+    }
+    if ((offset + spos) < profileseq.getLength())
+    {
+      // pad the final region with gaps.
+      StringBuffer sb = new StringBuffer();
+      for (int s = 0, ns = profileseq.getLength() - spos - offset; s < ns; s++)
+      {
+        sb.append(gc);
+      }
+      for (int s = 0, ns = al.getHeight(); s < ns; s++)
+      {
+        SequenceI sqobj = al.getSequenceAt(s);
+        if (sqobj==profileseq)
+        {
+          continue;
+        }
+        String sq = sqobj.getSequenceAsString();
+        // pad sequence
+        int diff = origseq.getLength() - sq.length();
+        while (diff > 0)
+        {
+          sq = sq
+                  + ((diff >= sb.length()) ? sb.toString() : sb
+                          .substring(0, diff));
+          diff = origseq.getLength() - sq.length();
+        }
+      }
+    }
+  }
 }
-- 
1.7.10.2