From d4f6172fff9d39d2cf3bd1a8d0260521615a5993 Mon Sep 17 00:00:00 2001
From: amwaterhouse <Andrew Waterhouse>
Date: Wed, 25 Oct 2006 13:59:54 +0000
Subject: [PATCH] Adjusts hiddenColumns correctly

---
 src/jalview/datamodel/ColumnSelection.java |   28 +++++++++++++++++++++++-----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/src/jalview/datamodel/ColumnSelection.java b/src/jalview/datamodel/ColumnSelection.java
index 60d7aea..6b44832 100644
--- a/src/jalview/datamodel/ColumnSelection.java
+++ b/src/jalview/datamodel/ColumnSelection.java
@@ -175,8 +175,9 @@ public class ColumnSelection
    * @param start beginning of edit
    * @param left shift in edit (+ve for removal, or -ve for inserts)
    */
-  public void compensateForEdit(int start, int change)
+  public Vector compensateForEdit(int start, int change)
   {
+    Vector deletedHiddenColumns = null;
     for (int i = 0; i < size(); i++)
     {
       int temp = columnAt(i);
@@ -189,20 +190,37 @@ public class ColumnSelection
 
     if(hiddenColumns!=null)
     {
-      for(int i=0; i<hiddenColumns.size(); i++)
+      deletedHiddenColumns = new Vector();
+      int hSize = hiddenColumns.size();
+      for(int i=0; i<hSize; i++)
       {
         int[] region = (int[]) hiddenColumns.elementAt(i);
-        if(region[0] > start)
+        if ( region[0]>start && start+change>region[1] )
+        {
+          deletedHiddenColumns.addElement(
+              hiddenColumns.elementAt(i));
+
+          hiddenColumns.removeElementAt(i);
+          i--;
+          hSize--;
+          continue;
+        }
+
+        if(region[0]>start)
         {
           region[0] -= change;
           region[1] -= change;
         }
+
         if(region[0]<0)
           region[0] = 0;
-        if(region[1] <0)
-          region[1] = 0;
+
       }
+
+      this.revealHiddenColumns(0);
     }
+
+    return deletedHiddenColumns;
   }
   /**
    * propagate shift in alignment columns to column selection
-- 
1.7.10.2