X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fdatamodel%2FSequenceDummy.java;fp=src%2Fjalview%2Fdatamodel%2FSequenceDummy.java;h=4a8c3ee439d4e8242ae949eae24782d342aaea3e;hb=24e842ef4b4fa929644b6ab4f79c7b61575c7b55;hp=80b0072f2dc469f4b7a8b35640ff1cb935807731;hpb=09d81d7aa46a618d636a8ca3fda75d4252650564;p=jalview.git

diff --git a/src/jalview/datamodel/SequenceDummy.java b/src/jalview/datamodel/SequenceDummy.java
index 80b0072..4a8c3ee 100644
--- a/src/jalview/datamodel/SequenceDummy.java
+++ b/src/jalview/datamodel/SequenceDummy.java
@@ -6,4 +6,27 @@ public class SequenceDummy extends Sequence implements SequenceI
   {
     super(sequenceId, "THISAPLACEHOLDER");
   }
+
+  private boolean dummy = true;
+  /**
+   * become a proxy for mseq, merging any existing annotation on this sequence
+   * 
+   * @param mseq
+   */
+  public void become(SequenceI mseq)
+  {
+    initSeqFrom(mseq, null);
+    dummy=false;
+  }
+
+  /**
+   * Test if the SequenceDummy has been promoted to a real sequence via
+   * SequenceDummy.become
+   * 
+   * @return true if this is a placeholder and contains no actual sequence data
+   */
+  public boolean isDummy()
+  {
+    return dummy;
+  }
 }