X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fcontroller%2FAlignViewController.java;h=24439caa05355860b5d9d2d67950d19bf0c23643;hb=461b359b7338934b198a22bd70c622f333ac4661;hp=ca2ae6d552f7cef5bca66cfc13d24270eaf4946b;hpb=5bf2fad80f9aad20946953f09c10a198a3b0f82e;p=jalview.git

diff --git a/src/jalview/controller/AlignViewController.java b/src/jalview/controller/AlignViewController.java
index ca2ae6d..24439ca 100644
--- a/src/jalview/controller/AlignViewController.java
+++ b/src/jalview/controller/AlignViewController.java
@@ -238,6 +238,7 @@ public class AlignViewController implements AlignViewControllerI
     ColumnSelection cs = viewport.getColumnSelection();
     if (bs.cardinality() > 0 || invert)
     {
+      boolean changed = false;
       if (cs == null)
       {
         cs = new ColumnSelection();
@@ -246,6 +247,7 @@ public class AlignViewController implements AlignViewControllerI
       {
         if (!extendCurrent)
         {
+          changed = !cs.isEmpty();
           cs.clear();
         }
       }
@@ -257,6 +259,7 @@ public class AlignViewController implements AlignViewControllerI
         {
           if (ibs < 0 || i < ibs)
           {
+            changed = true;
             if (toggle && cs.contains(i))
             {
               cs.removeElement(i++);
@@ -278,6 +281,7 @@ public class AlignViewController implements AlignViewControllerI
         for (int i = bs.nextSetBit(alStart); i >= alStart; i = bs
                 .nextSetBit(i + 1))
         {
+          changed = true;
           if (toggle && cs.contains(i))
           {
             cs.removeElement(i);
@@ -288,18 +292,21 @@ public class AlignViewController implements AlignViewControllerI
           }
         }
       }
-      viewport.setColumnSelection(cs);
-      alignPanel.paintAlignment(true);
-      avcg.setStatus(MessageManager.formatMessage(
-              "label.view_controller_toggled_marked",
-              new String[] {
-                  (toggle ? MessageManager.getString("label.toggled")
-                          : MessageManager.getString("label.marked")),
-                  (invert ? (Integer.valueOf((alw - alStart)
-                          - bs.cardinality()).toString()) : (Integer
-                          .valueOf(bs.cardinality()).toString())),
-                  featureType, Integer.valueOf(nseq).toString() }));
-      return true;
+      if (changed)
+      {
+        viewport.setColumnSelection(cs);
+        alignPanel.paintAlignment(true);
+        avcg.setStatus(MessageManager.formatMessage(
+                "label.view_controller_toggled_marked",
+                new String[] {
+                    (toggle ? MessageManager.getString("label.toggled")
+                            : MessageManager.getString("label.marked")),
+                    (invert ? (Integer.valueOf((alw - alStart)
+                            - bs.cardinality()).toString()) : (Integer
+                            .valueOf(bs.cardinality()).toString())),
+                    featureType, Integer.valueOf(nseq).toString() }));
+        return true;
+      }
     }
     else
     {
@@ -311,8 +318,8 @@ public class AlignViewController implements AlignViewControllerI
         cs.clear();
         alignPanel.paintAlignment(true);
       }
-      return false;
     }
+    return false;
   }
 
   @Override