X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fjalview%2Fdatamodel%2FHiddenSequences.java;h=1daaf434156298986a8eb958213a47e72b7d8b34;hb=0e65ec37e2c956e0ad94feda6fd07b7c3a9003ee;hp=9e2cf72b416d1d5a69f3945305d55ce1b12ee7ae;hpb=37de9310bec3501cbc6381e0c3dcb282fcaad812;p=jalview.git

diff --git a/src/jalview/datamodel/HiddenSequences.java b/src/jalview/datamodel/HiddenSequences.java
index 9e2cf72..1daaf43 100755
--- a/src/jalview/datamodel/HiddenSequences.java
+++ b/src/jalview/datamodel/HiddenSequences.java
@@ -154,8 +154,8 @@ public class HiddenSequences
       hiddenSequences = new SequenceI[alignment.getHeight()];
     }
 
-    int alignmentIndex = alignment.findIndex(sequence);
-    alignmentIndex = adjustForHiddenSeqs(alignmentIndex);
+    int absAlignmentIndex = alignment.findIndex(sequence);
+    int alignmentIndex = adjustForHiddenSeqs(absAlignmentIndex);
 
     if (hiddenSequences[alignmentIndex] != null)
     {
@@ -164,7 +164,7 @@ public class HiddenSequences
 
     hiddenSequences[alignmentIndex] = sequence;
 
-    alignment.deleteSequence(sequence);
+    alignment.deleteHiddenSequence(absAlignmentIndex);
   }
 
   public List<SequenceI> showAll(
@@ -246,6 +246,12 @@ public class HiddenSequences
     return hiddenSequences == null ? null : hiddenSequences[alignmentIndex];
   }
 
+  /**
+   * Convert absolute alignment index to visible alignment index
+   * 
+   * @param alignmentIndex
+   * @return
+   */
   public int findIndexWithoutHiddenSeqs(int alignmentIndex)
   {
     if (hiddenSequences == null)
@@ -254,8 +260,14 @@ public class HiddenSequences
     }
     int index = 0;
     int hiddenSeqs = 0;
+    int diff = 0;
     if (hiddenSequences.length <= alignmentIndex)
     {
+      // if the alignmentIndex runs past the end of hidden sequences
+      // and therefore actually past the end of the alignment
+      // store the difference to add back on at the end, so that behaviour
+      // is consistent with hidden columns behaviour (used by overview panel)
+      diff = alignmentIndex - hiddenSequences.length + 1;
       alignmentIndex = hiddenSequences.length - 1;
     }
 
@@ -268,9 +280,50 @@ public class HiddenSequences
       index++;
     }
 
-    return (alignmentIndex - hiddenSeqs);
+    return (alignmentIndex - hiddenSeqs + diff);
+  }
+
+  /**
+   * Find the visible row which is a given visible number of rows above another
+   * visible row. i.e. for a startRow x, the row which is distance 1 away will
+   * be row x-1.
+   * 
+   * @param visibleDistance
+   *          the number of visible rows to offset by
+   * @param startRow
+   *          the row to start from
+   * @return the position of the row in the visible alignment
+   */
+  public int subtractVisibleRows(int visibleDistance, int startRow)
+  {
+    // walk upwards through the alignment
+    // count all the non-null sequences until we have visibleDistance counted
+    // then return the next visible sequence
+    if (hiddenSequences == null)
+    {
+      return startRow - visibleDistance;
+    }
+
+    int index = startRow;
+    int count = 0;
+    while ((index > -1) && (count < visibleDistance))
+    {
+      if (hiddenSequences[index] == null)
+      {
+        // count visible sequences
+        count++;
+      }
+      index--;
+    }
+    return index;
   }
 
+  /**
+   * Convert alignment index from visible alignment to absolute alignment
+   * 
+   * @param alignmentIndex
+   * @return
+   */
   public int adjustForHiddenSeqs(int alignmentIndex)
   {
     if (hiddenSequences == null)
@@ -350,4 +403,20 @@ public class HiddenSequences
 
     return false;
   }
+
+  /**
+   * Answers if a sequence is hidden
+   * 
+   * @param seq
+   *          (absolute) index to test
+   * @return true if sequence at index seq is hidden
+   */
+  public boolean isHidden(int seq)
+  {
+    if (hiddenSequences != null)
+    {
+      return (hiddenSequences[seq] != null);
+    }
+    return false;
+  }
 }