altoslib: Keep time series in AltosFlightSeries array sorted

This makes using the graph way easier.

Signed-off-by: Keith Packard <keithp@keithp.com>

2 files changed, 11 insertions, 1 deletions

diff --git a/altoslib/AltosFlightSeries.java b/altoslib/AltosFlightSeries.java
index 315e0a44..5223a5b4 100644
--- a/altoslib/AltosFlightSeries.java
+++ b/altoslib/AltosFlightSeries.java
@@ -118,6 +118,12 @@ public class AltosFlightSeries extends AltosDataListener {
 	}
 
 	public void add_series(AltosTimeSeries s) {
+		for (int e = 0; e < series.size(); e++) {
+			if (s.compareTo(series.get(e)) < 0){
+				series.add(e, s);
+				return;
+			}
+		}
 		series.add(s);
 	}
 
diff --git a/altoslib/AltosTimeSeries.java b/altoslib/AltosTimeSeries.java
index db33fafa..5cf46c9a 100644
--- a/altoslib/AltosTimeSeries.java
+++ b/altoslib/AltosTimeSeries.java
@@ -16,11 +16,15 @@ package org.altusmetrum.altoslib_11;
 
 import java.util.*;
 
-public class AltosTimeSeries implements Iterable<AltosTimeValue> {
+public class AltosTimeSeries implements Iterable<AltosTimeValue>, Comparable<AltosTimeSeries> {
 	public String			label;
 	public AltosUnits		units;
 	ArrayList<AltosTimeValue>	values;
 
+	public int compareTo(AltosTimeSeries other) {
+		return label.compareTo(other.label);
+	}
+
 	public void add(AltosTimeValue tv) {
 		values.add(tv);
 	}