JAL-3383 JAL-3253-applet additional efficiencies; FeatureStore

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

diff --git a/src/jalview/datamodel/Sequence.java b/src/jalview/datamodel/Sequence.java
index 7624d2c..4219c8e 100755 (executable)
--- a/src/jalview/datamodel/Sequence.java
+++ b/src/jalview/datamodel/Sequence.java
@@ -2156,15 +2156,26 @@ public class Sequence extends ASequence implements SequenceI
   /**
    * @author Bob Hanson 2019.07.30
    * 
-   * allows passing the result ArrayList as a parameter to avoid unnecessary construction
+   *         allows passing the result ArrayList as a parameter to avoid
+   *         unnecessary construction
+   * @return result (JavaScript) or new ArrayList (Java -- see FeatureRender)
    * 
    */
   @Override
-  public void findFeatures(int column, String type,
+  public List<SequenceFeature> findFeatures(int column, String type,
           List<SequenceFeature> result)
   {
-    getFeatures().findFeatures(findPosition(column - 1), type, result);
+    return getFeatures().findFeatures(findPosition(column - 1), type,
+            result);
   }
 
+  /**
+   * allows early intervention for renderer if this returns false
+   */
+  @Override
+  public boolean hasFeatures(String type)
+  {
+    return getFeatures().hasFeatures(type);
+  }
 
 }