X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fapi%2FAlignCalcWorkerI.java;h=b51b94ec098203f2845b125d736e25eb129b08c8;hb=772f645f8a2cb3c5d25eab36d875f2e09ceca48f;hp=85157c466c31e11b66eeea25b8aced2bccb066c8;hpb=25551bf7f81cd62e7b427f5787f2879eab2afed7;p=jalview.git

diff --git a/src/jalview/api/AlignCalcWorkerI.java b/src/jalview/api/AlignCalcWorkerI.java
index 85157c4..b51b94e 100644
--- a/src/jalview/api/AlignCalcWorkerI.java
+++ b/src/jalview/api/AlignCalcWorkerI.java
@@ -20,13 +20,15 @@
  */
 package jalview.api;
 
+import java.util.concurrent.Callable;
+
 import jalview.datamodel.AlignmentAnnotation;
 
 /**
  * Interface describing a worker that calculates alignment annotation(s). The
  * main (re-)calculation should be performed by the inherited run() method.
  */
-public interface AlignCalcWorkerI extends Runnable
+public interface AlignCalcWorkerI
 {
   /**
    * Answers true if this worker updates the given annotation (regardless of its
@@ -39,8 +41,8 @@ public interface AlignCalcWorkerI extends Runnable
 
   /**
    * Updates the display of calculated annotation values (does not recalculate
-   * the values). This allows ßquick redraw of annotations when display settings
-   * are changed.
+   * the values). This allows a quick redraw of annotations when display
+   * settings are changed.
    */
   void updateAnnotation();
 
@@ -48,7 +50,13 @@ public interface AlignCalcWorkerI extends Runnable
    * Removes any annotation(s) managed by this worker from the alignment
    */
   void removeAnnotation();
-
+  
+  /**
+   * The main calculation happens here
+   * @throws Throwable 
+   */
+  public void run() throws Throwable;
+  
   /**
    * Answers true if the worker should be deleted entirely when its annotation
    * is deleted from the display, or false if it should continue to run. Some