JAL-2349 JAL-3855 column selection highlighting

[jalview.git] / src / jalview / datamodel / ColumnSelection.java

diff --git a/src/jalview/datamodel/ColumnSelection.java b/src/jalview/datamodel/ColumnSelection.java
index 6f14e21..140a366 100644 (file)
--- a/src/jalview/datamodel/ColumnSelection.java
+++ b/src/jalview/datamodel/ColumnSelection.java
@@ -20,15 +20,15 @@
  */
 package jalview.datamodel;
 
-import jalview.viewmodel.annotationfilter.AnnotationFilterParameter;
-import jalview.viewmodel.annotationfilter.AnnotationFilterParameter.SearchableAnnotationField;
-
 import java.util.ArrayList;
 import java.util.BitSet;
 import java.util.Collections;
 import java.util.List;
 import java.util.regex.PatternSyntaxException;
 
+import jalview.viewmodel.annotationfilter.AnnotationFilterParameter;
+import jalview.viewmodel.annotationfilter.AnnotationFilterParameter.SearchableAnnotationField;
+
 /**
  * Data class holding the selected columns and hidden column ranges for a view.
  * Ranges are base 1.
@@ -354,6 +354,22 @@ public class ColumnSelection
   }
 
   /**
+   * 
+   */
+  public boolean intersects(int from, int to)
+  {
+    // TODO: do this in a more efficient bitwise way
+    for (int f = from; f <= to; f++)
+    {
+      if (selection.isSelected(f))
+      {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  /**
    * Answers true if no columns are selected, else false
    */
   public boolean isEmpty()