0f0590f5eb6254ddd039868aa5f09f60e44f64b9
kate
  Thu Oct 3 13:48:03 2019 -0700
Append 'filter activated' notice to composites hiding empty subtracks. refs #23365

diff --git src/hg/hgTracks/bedTrack.c src/hg/hgTracks/bedTrack.c
index 6f03ef5..20454a2 100644
--- src/hg/hgTracks/bedTrack.c
+++ src/hg/hgTracks/bedTrack.c
@@ -77,31 +77,33 @@
     struct hash *settings = tg->tdb->settingsHash;
     char *bigDataUrl = hashFindVal(settings, "bigDataUrl");
     struct bedTabixFile *btf = bedTabixFileMayOpen(bigDataUrl, NULL, 0, 0);
     list = bedTabixReadBeds(btf, chromName, winStart, winEnd, loader);
     bedTabixFileClose(&btf);
     }
 else if (tg->isBigBed)
     { // avoid opening an unneeded db connection for bigBed; required not to use mysql for parallel fetch tracks
     struct lm *lm = lmInit(0);
     struct bigBedInterval *bb, *bbList = bigBedSelectRange(tg, chromName, winStart, winEnd, lm);
     struct bbiFile *bbi = fetchBbiForTrack(tg);
     char *bedRow[bbi->fieldCount];
     char startBuf[16], endBuf[16];
     struct bigBedFilter *filters = bigBedBuildFilters(cart, bbi, tg->tdb);
 
-    if (filters)
+    if (filters || 
+        (tdbIsCompositeChild(tg->tdb) && 
+            compositeHideEmptySubtracks(cart, tdbGetComposite(tg->tdb), NULL, NULL)))
                 labelTrackAsFiltered(tg);
 
      if (tg->itemName == bedName && !trackDbSettingClosestToHomeOn(tg->tdb, "linkIdInName"))
         tg->itemName = bigBedItemName;
 
     bigBedLabelCalculateFields(cart, tg->tdb, bbi,  &tg->labelColumns);
     for (bb = bbList; bb != NULL; bb = bb->next)
         {
         bigBedIntervalToRow(bb, chromName, startBuf, endBuf, bedRow, ArraySize(bedRow));
         if (!bigBedFilterInterval(bedRow, filters))
             continue;
         bed = loader(bedRow);
         // FIXME BRANEY: either disable for all tracks with NUM_FIELDS > label field or better,
         // fix how label is stored so it doesn't trash custom bed field
         // BRANEY says: the loader should be returning bed structures which include the label field.