X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fdatamodel%2FAlignment.java;h=91b29dab36366a690ae14c900592638e4e135ea0;hb=51ca42a8c4525c6871e3c8ea529b6cb8a59bb10f;hp=93ad332d24f13d9babd3c7d253a151c745d971d1;hpb=ad8b755b7d5daaa914a61fc4ca476196551b2f0a;p=jalview.git

diff --git a/src/jalview/datamodel/Alignment.java b/src/jalview/datamodel/Alignment.java
index 93ad332..91b29da 100755
--- a/src/jalview/datamodel/Alignment.java
+++ b/src/jalview/datamodel/Alignment.java
@@ -125,8 +125,7 @@ public class Alignment implements AlignmentI
   /**
    * Make a new alignment from an array of SeqCigars
    * 
-   * @param seqs
-   *          SeqCigar[]
+   * @param alseqs
    */
   public Alignment(SeqCigar[] alseqs)
   {
@@ -195,6 +194,7 @@ public class Alignment implements AlignmentI
   {
     synchronized (sequences)
     {
+    
       if (i > -1 && i < sequences.size())
       {
         return sequences.get(i);
@@ -398,6 +398,10 @@ public class Alignment implements AlignmentI
     return null;
   }
 
+  private static final SequenceGroup[] noGroups = new SequenceGroup[0];
+
+  private ArrayList<SequenceGroup> temp = new ArrayList<>();
+
   /*
    * (non-Javadoc)
    * 
@@ -407,11 +411,15 @@ public class Alignment implements AlignmentI
   @Override
   public SequenceGroup[] findAllGroups(SequenceI s)
   {
-    ArrayList<SequenceGroup> temp = new ArrayList<>();
 
     synchronized (groups)
     {
+      temp.clear();
       int gSize = groups.size();
+      if (gSize == 0)
+      {
+        return noGroups;
+      }
       for (int i = 0; i < gSize; i++)
       {
         SequenceGroup sg = groups.get(i);
@@ -589,11 +597,12 @@ public class Alignment implements AlignmentI
     int i = 0;
     SequenceI sq = null;
     String sqname = null;
+    int nseq = sequences.size();
     if (startAfter != null)
     {
       // try to find the sequence in the alignment
       boolean matched = false;
-      while (i < sequences.size())
+      while (i < nseq)
       {
         if (getSequenceAt(i++) == startAfter)
         {
@@ -606,7 +615,7 @@ public class Alignment implements AlignmentI
         i = 0;
       }
     }
-    while (i < sequences.size())
+    while (i < nseq)
     {
       sq = getSequenceAt(i);
       sqname = sq.getName();
@@ -717,6 +726,17 @@ public class Alignment implements AlignmentI
     return maxLength;
   }
 
+  @Override
+  public int getVisibleWidth()
+  {
+    int w = getWidth();
+    if (hiddenCols != null)
+    {
+      w -= hiddenCols.getSize();
+    }
+    return w;
+  }
+
   /**
    * DOCUMENT ME!
    * 
@@ -1177,7 +1197,8 @@ public class Alignment implements AlignmentI
     int maxLength = -1;
 
     SequenceI current;
-    for (int i = 0; i < sequences.size(); i++)
+    int nseq = sequences.size();
+    for (int i = 0; i < nseq; i++)
     {
       current = getSequenceAt(i);
       for (int j = current.getLength(); j > maxLength; j--)
@@ -1194,7 +1215,7 @@ public class Alignment implements AlignmentI
     maxLength++;
 
     int cLength;
-    for (int i = 0; i < sequences.size(); i++)
+    for (int i = 0; i < nseq; i++)
     {
       current = getSequenceAt(i);
       cLength = current.getLength();
@@ -1893,9 +1914,12 @@ public class Alignment implements AlignmentI
   }
 
   @Override
-  public void setHiddenColumns(HiddenColumns cols)
+  public boolean setHiddenColumns(HiddenColumns cols)
   {
+    boolean changed = cols == null ? hiddenCols != null
+            : !cols.equals(hiddenCols);
     hiddenCols = cols;
+    return changed;
   }
 
   @Override