--- /dev/null
+package jalview.structure;
+
+import jalview.api.AlignmentViewPanel;
+
+/**
+ * handler for alignmentViewPanel events
+ * @author jimp
+ *
+ */
+public interface AlignmentViewPanelListener
+{
+
+ void viewPosition(int startRes, int endRes, int startSeq, int endSeq,
+ AlignmentViewPanel source);
+
+}