X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fcommands%2FOrderCommand.java;h=5758e19aa1e4a14dc0f2110f7774c9f77df8993f;hb=be32c14cd8e48fe0a207cd7030cb9cd46f894678;hp=bc724068104c1d739d500d8f41a6a30bca4e43ad;hpb=10e637daad8983c41db8679baabea5563d7371f4;p=jalview.git

diff --git a/src/jalview/commands/OrderCommand.java b/src/jalview/commands/OrderCommand.java
index bc72406..5758e19 100644
--- a/src/jalview/commands/OrderCommand.java
+++ b/src/jalview/commands/OrderCommand.java
@@ -20,19 +20,46 @@
  */
 package jalview.commands;
 
-import jalview.analysis.*;
-import jalview.datamodel.*;
+import jalview.analysis.AlignmentSorter;
+import jalview.datamodel.AlignmentI;
+import jalview.datamodel.SequenceI;
 
+/**
+ * An undoable command to reorder the sequences in an alignment.
+ * 
+ * @author gmcarstairs
+ *
+ */
 public class OrderCommand implements CommandI
 {
   String description;
 
+  /*
+   * The sequence order before sorting (target order for an undo)
+   */
   SequenceI[] seqs;
 
+  /*
+   * The sequence order specified by this command
+   */
   SequenceI[] seqs2;
 
+  /*
+   * The alignment the command acts on
+   */
   AlignmentI al;
 
+  /**
+   * Constructor given the 'undo' sequence order, and the (already) sorted
+   * alignment.
+   * 
+   * @param description
+   *          a text label for the 'undo' menu option
+   * @param seqs
+   *          the sequence order for undo
+   * @param al
+   *          the alignment as ordered by this command
+   */
   public OrderCommand(String description, SequenceI[] seqs, AlignmentI al)
   {
     this.description = description;
@@ -61,4 +88,15 @@ public class OrderCommand implements CommandI
   {
     AlignmentSorter.setOrder(al, seqs);
   }
+
+  /**
+   * Returns the sequence order used to sort, or before sorting if undo=true.
+   * 
+   * @param undo
+   * @return
+   */
+  public SequenceI[] getSequenceOrder(boolean undo)
+  {
+    return undo ? seqs : seqs2;
+  }
 }