altosui/telegps: Display error message when attempting to graph unknown files

[fw/altos] / altoslib / AltosRecordSet.java

diff --git a/altoslib/AltosRecordSet.java b/altoslib/AltosRecordSet.java
index a84cc3f9a5564a96cedde236d63a3612e3f76e97..4c459cba68cb3080963802c09e71df4ea4fe4d5a 100644 (file)
--- a/altoslib/AltosRecordSet.java
+++ b/altoslib/AltosRecordSet.java
@@ -19,4 +19,5 @@ import java.util.*;
 public interface AltosRecordSet {
        public AltosCalData cal_data();
        public void capture_series(AltosDataListener listener);
+       public boolean valid();
 }