--- /dev/null
+package jalview.gui;\r
+\r
+/**\r
+ * Visual progress indicator interface.\r
+ * @author JimP\r
+ *\r
+ */\r
+public interface IProgressIndicator\r
+{\r
+ /**\r
+ * Visual indication of some operation taking place. \r
+ * On first call with a particular ID an indicator with the given message is added. The indicator is removed with a second call with same ID. \r
+ * @param message - displayed message for operation\r
+ * @param id - unique handle for this indicator\r
+ */\r
+ public abstract void setProgressBar(String message, long id);\r
+\r
+}
\ No newline at end of file