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

[fw/altos] / altoslib / AltosTelemetryFile.java

diff --git a/altoslib/AltosTelemetryFile.java b/altoslib/AltosTelemetryFile.java
index 679c6809559508a7b7c8719e8255b0d0ac00837a..01d82c242bd3ef7e1915269eee57ad1d40ac0db6 100644 (file)
--- a/altoslib/AltosTelemetryFile.java
+++ b/altoslib/AltosTelemetryFile.java
@@ -117,6 +117,10 @@ public class AltosTelemetryFile implements AltosRecordSet {
                return cal_data;
        }
 
+       public boolean valid() {
+               return true;
+       }
+
        public void capture_series(AltosDataListener listener) {
                AltosCalData    cal_data = cal_data();