Merge branch 'merge/develop_JAL-1780_JAL-653_JAL-1892' into develop

[jalview.git] / src / jalview / datamodel / SequenceDummy.java

diff --git a/src/jalview/datamodel/SequenceDummy.java b/src/jalview/datamodel/SequenceDummy.java
new file mode 100644 (file)
index 0000000..4a8c3ee
--- /dev/null
+++ b/src/jalview/datamodel/SequenceDummy.java
@@ -0,0 +1,32 @@
+package jalview.datamodel;
+
+public class SequenceDummy extends Sequence implements SequenceI
+{
+  public SequenceDummy(String sequenceId)
+  {
+    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;
+  }
+}