X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fdatamodel%2FSequenceGroup.java;h=0cf954b44d127b98edebac6c0dc5a6ad342e0972;hb=39d42f25edeb526275d178e0259e767e7c29bd78;hp=4c6420c0082e69f77863da4fdd68465c9c516c5c;hpb=b6401ce0eeaf81c8a5ee8051d109fb581cb42eab;p=jalview.git

diff --git a/src/jalview/datamodel/SequenceGroup.java b/src/jalview/datamodel/SequenceGroup.java
index 4c6420c..0cf954b 100755
--- a/src/jalview/datamodel/SequenceGroup.java
+++ b/src/jalview/datamodel/SequenceGroup.java
@@ -47,6 +47,43 @@ public class SequenceGroup
     endRes = end;
   }
 
+  public boolean adjustForRemoveLeft(int col)
+  {
+    // return value is true if the group still exists
+    if(startRes>=col)
+      startRes = startRes - col;
+    if(endRes>=col)
+    {
+      endRes = endRes - col;
+      if(startRes>endRes)
+        startRes = 0;
+    }
+    else
+    {
+        // must delete this group!!
+        return false;
+    }
+
+    return true;
+  }
+
+  public boolean adjustForRemoveRight(int col)
+  {
+
+    if(startRes>col)
+    {
+      // delete this group
+      return false;
+    }
+
+    if(endRes>=col)
+      endRes = col;
+
+
+    return true;
+  }
+
+
   public String getName()
   {
     return groupName;