home: hide tabs when there is only one

Hide the tab selector when there is only one tab.

This is mostly to remove a redundant UI element that has no purpose
when only one list is shown.

app/src/main/java/org/oxycblt/auxio/home/HomeFragment.kt

@@ -21,6 +21,7 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.MenuItem
 import androidx.appcompat.widget.Toolbar
+import androidx.core.view.isVisible
 import androidx.core.view.iterator
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
@@ -56,8 +57,6 @@ import org.oxycblt.auxio.util.unlikelyToBeNull
  * The main "Launching Point" fragment of Auxio, allowing navigation to the detail views for each
  * respective item.
  * @author OxygenCobalt
- *
- * TODO: Make tabs invisible when there is only one
  */
 class HomeFragment : ViewBindingFragment<FragmentHomeBinding>(), Toolbar.OnMenuItemClickListener {
     private val playbackModel: PlaybackViewModel by activityViewModels()
@@ -75,6 +74,8 @@ class HomeFragment : ViewBindingFragment<FragmentHomeBinding>(), Toolbar.OnMenuI
             setOnMenuItemClickListener(this@HomeFragment)
         }
 
+        updateTabConfiguration()
+
         binding.homePager.apply {
             adapter = HomePagerAdapter()
 
@@ -224,10 +225,17 @@ class HomeFragment : ViewBindingFragment<FragmentHomeBinding>(), Toolbar.OnMenuI
     private fun handleRecreateTabs(recreate: Boolean) {
         if (recreate) {
             requireBinding().homePager.recreate()
+            updateTabConfiguration()
             homeModel.finishRecreateTabs()
         }
     }
 
+    private fun updateTabConfiguration() {
+        if (homeModel.tabs.size == 1) {
+            requireBinding().homeTabs.isVisible = false
+        }
+    }
+
     private fun handleLoaderResponse(response: MusicStore.Response?) {
         val binding = requireBinding()
         when (response) {

app/src/main/java/org/oxycblt/auxio/home/HomeViewModel.kt

@@ -91,9 +91,7 @@ class HomeViewModel : ViewModel(), SettingsManager.Callback, MusicStore.Callback
         _shouldRecreateTabs.value = false
     }
 
-    /**
+    /** Get the specific sort for the given [DisplayMode]. */
-     * Get the specific sort for the given [DisplayMode].
-     */
     fun getSortForDisplay(displayMode: DisplayMode): Sort {
         return when (displayMode) {
             DisplayMode.SHOW_SONGS -> settingsManager.libSongSort