Do not expose TrackDataType to fragments.

src/main/java/de/dennisguse/opentracks/content/TrackDataHub.java

@@ -193,13 +193,18 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
      * Registers a {@link TrackDataListener}.
      *
      * @param trackDataListener the track data listener
-     * @param trackDataTypes    the track data types
      */
-    public void registerTrackDataListener(final TrackDataListener trackDataListener, final EnumSet<TrackDataType> trackDataTypes) {
+    public void registerTrackDataListener(final TrackDataListener trackDataListener, boolean tracksTable, boolean waypointTable, boolean trackPointsTable_SampleIn, boolean trackPointsTable_SampleOut) {
+        final EnumSet<TrackDataType> types = EnumSet.noneOf(TrackDataType.class);
+        if (tracksTable) types.add(TrackDataType.TRACKS_TABLE);
+        if (waypointTable) types.add(TrackDataType.WAYPOINTS_TABLE);
+        if (trackPointsTable_SampleIn) types.add(TrackDataType.SAMPLED_IN_TRACK_POINTS_TABLE);
+        if (trackPointsTable_SampleOut) types.add(TrackDataType.SAMPLED_OUT_TRACK_POINTS_TABLE);
+
         runInHandlerThread(new Runnable() {
             @Override
             public void run() {
-                trackDataManager.registerListener(trackDataListener, trackDataTypes);
+                trackDataManager.registerListener(trackDataListener, types);
                 if (started) {
                     loadDataForListener(trackDataListener);
                 }

src/main/java/de/dennisguse/opentracks/content/TrackDataType.java

@@ -21,7 +21,7 @@ package de.dennisguse.opentracks.content;
  *
  * @author Jimmy Shih
  */
-public enum TrackDataType {
+enum TrackDataType {
     TRACKS_TABLE, // tracks table changes
     WAYPOINTS_TABLE, // waypoints table changes
     SAMPLED_IN_TRACK_POINTS_TABLE, // sampled-in track points table changes

src/main/java/de/dennisguse/opentracks/fragments/ChartFragment.java

@@ -29,7 +29,6 @@ import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentActivity;
 
 import java.util.ArrayList;
-import java.util.EnumSet;
 import java.util.List;
 
 import de.dennisguse.opentracks.R;
@@ -37,7 +36,6 @@ import de.dennisguse.opentracks.TrackDetailActivity;
 import de.dennisguse.opentracks.chart.ChartView;
 import de.dennisguse.opentracks.content.TrackDataHub;
 import de.dennisguse.opentracks.content.TrackDataListener;
-import de.dennisguse.opentracks.content.TrackDataType;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.content.data.Waypoint;
@@ -305,9 +303,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
      */
     private synchronized void resumeTrackDataHub() {
         trackDataHub = ((TrackDetailActivity) getActivity()).getTrackDataHub();
-        trackDataHub.registerTrackDataListener(this, EnumSet.of(TrackDataType.TRACKS_TABLE,
+        trackDataHub.registerTrackDataListener(this, true, true, true, true);
-                TrackDataType.WAYPOINTS_TABLE, TrackDataType.SAMPLED_IN_TRACK_POINTS_TABLE,
-                TrackDataType.SAMPLED_OUT_TRACK_POINTS_TABLE));
     }
 
     /**
@@ -360,7 +356,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
      * data[6] = power <br>
      *
      * @param trackPoint the trackPoint
-     * @param data     the data point to fill in, can be null
+     * @param data       the data point to fill in, can be null
      */
     @VisibleForTesting
     void fillDataPoint(@NonNull TrackPoint trackPoint, double[] data) {

src/main/java/de/dennisguse/opentracks/fragments/StatsFragment.java

@@ -33,13 +33,10 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
 
-import java.util.EnumSet;
-
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.TrackDetailActivity;
 import de.dennisguse.opentracks.content.TrackDataHub;
 import de.dennisguse.opentracks.content.TrackDataListener;
-import de.dennisguse.opentracks.content.TrackDataType;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.content.data.Waypoint;
@@ -393,8 +390,7 @@ public class StatsFragment extends Fragment implements TrackDataListener {
      */
     private synchronized void resumeTrackDataHub() {
         trackDataHub = ((TrackDetailActivity) getActivity()).getTrackDataHub();
-        trackDataHub.registerTrackDataListener(this, EnumSet.of(TrackDataType.TRACKS_TABLE,
+        trackDataHub.registerTrackDataListener(this, true, false, true, true);
-                TrackDataType.SAMPLED_IN_TRACK_POINTS_TABLE, TrackDataType.SAMPLED_OUT_TRACK_POINTS_TABLE));
     }
 
     /**