X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fdatamodel%2FAlignmentI.java;h=7274e5f4cd89af52c30266d25935f71539b2117b;hb=d7361eaa08dc9af7d996851f39b7a2007d1b8832;hp=c15bb99b84c393da6f4b0afacc731f3aa5c1f95c;hpb=df705d500ff5e5d167d1516e73169df9fde3d56e;p=jalview.git

diff --git a/src/jalview/datamodel/AlignmentI.java b/src/jalview/datamodel/AlignmentI.java
index c15bb99..7274e5f 100755
--- a/src/jalview/datamodel/AlignmentI.java
+++ b/src/jalview/datamodel/AlignmentI.java
@@ -41,7 +41,8 @@ public interface AlignmentI extends AnnotatedCollectionI
    * 
    * Calculates the maximum width of the alignment, including gaps.
    * 
-   * @return Greatest sequence length within alignment.
+   * @return Greatest sequence length within alignment, or -1 if no sequences
+   *         present
    */
   @Override
   int getWidth();
@@ -107,11 +108,14 @@ public interface AlignmentI extends AnnotatedCollectionI
    * Used to set a particular index of the alignment with the given sequence.
    * 
    * @param i
-   *          Index of sequence to be updated.
+   *          Index of sequence to be updated. if i>length, sequence will be
+   *          added to end, with no intervening positions.
    * @param seq
-   *          New sequence to be inserted.
+   *          New sequence to be inserted. The existing sequence at position i
+   *          will be replaced.
+   * @return existing sequence (or null if i>current length)
    */
-  void setSequenceAt(int i, SequenceI seq);
+  SequenceI replaceSequenceAt(int i, SequenceI seq);
 
   /**
    * Deletes a sequence from the alignment
@@ -422,7 +426,7 @@ public interface AlignmentI extends AnnotatedCollectionI
    * @param results
    * @return -1 or index of sequence in alignment
    */
-  int findIndex(SearchResults results);
+  int findIndex(SearchResultsI results);
 
   /**
    * append sequences and annotation from another alignment object to this one.