home: reflect no music state in tabs

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

@@ -175,6 +175,7 @@ class HomeFragment :
 
         // --- VIEWMODEL SETUP ---
         collect(homeModel.recreateTabs.flow, ::handleRecreate)
+        collect(homeModel.chooseMusicLocations.flow, ::handleChooseFolders)
         collectImmediately(homeModel.currentTabType, ::updateCurrentTab)
         collect(detailModel.toShow.flow, ::handleShow)
         collect(listModel.menu.flow, ::handleMenu)
@@ -301,6 +302,16 @@ class HomeFragment :
         homeModel.recreateTabs.consume()
     }
 
+    private fun handleChooseFolders(unit: Unit?) {
+        if (unit == null) {
+            return
+        }
+        findNavController().navigateSafe(
+            HomeFragmentDirections.chooseLocations()
+        )
+        homeModel.chooseMusicLocations.consume()
+    }
+
     private fun updateIndexerState(state: IndexingState?) {
         // TODO: Make music loading experience a bit more pleasant
         //  1. Loading placeholder for item lists

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

@@ -159,6 +159,10 @@ constructor(
     val showOuter: Event<Outer>
         get() = _showOuter
 
+    private val _chooseMusicLocations = MutableEvent<Unit>()
+    val chooseMusicLocations: Event<Unit>
+        get() = _chooseMusicLocations
+
     init {
         homeGenerator.attach()
     }
@@ -263,6 +267,10 @@ constructor(
         _isFastScrolling.value = isFastScrolling
     }
 
+    fun startChooseMusicLocations() {
+        _chooseMusicLocations.put(Unit)
+    }
+
     fun showSettings() {
         _showOuter.put(Outer.Settings)
     }

app/src/main/java/org/oxycblt/auxio/home/list/AlbumListFragment.kt

@@ -22,6 +22,7 @@ import android.os.Bundle
 import android.text.format.DateUtils
 import android.view.LayoutInflater
 import android.view.ViewGroup
+import androidx.core.view.isInvisible
 import androidx.fragment.app.activityViewModels
 import dagger.hilt.android.AndroidEntryPoint
 import java.util.Formatter
@@ -37,6 +38,7 @@ import org.oxycblt.auxio.list.recycler.AlbumViewHolder
 import org.oxycblt.auxio.list.recycler.FastScrollRecyclerView
 import org.oxycblt.auxio.list.sort.Sort
 import org.oxycblt.auxio.music.Album
+import org.oxycblt.auxio.music.IndexingState
 import org.oxycblt.auxio.music.Music
 import org.oxycblt.auxio.music.MusicParent
 import org.oxycblt.auxio.music.MusicViewModel
@@ -79,7 +81,13 @@ class AlbumListFragment :
             listener = this@AlbumListFragment
         }
 
-        collectImmediately(homeModel.albumList, ::updateAlbums)
+        binding.homeNoMusicMsg.text = getString(R.string.lng_no_albums)
+
+        binding.homeChooseMusicSources.setOnClickListener {
+            homeModel.startChooseMusicLocations()
+        }
+
+        collectImmediately(homeModel.albumList, musicModel.indexingState, ::updateAlbums)
         collectImmediately(listModel.selected, ::updateSelection)
         collectImmediately(
             playbackModel.song, playbackModel.parent, playbackModel.isPlaying, ::updatePlayback)
@@ -143,7 +151,11 @@ class AlbumListFragment :
         listModel.openMenu(R.menu.album, item)
     }
 
-    private fun updateAlbums(albums: List<Album>) {
+    private fun updateAlbums(albums: List<Album>, indexingState: IndexingState?) {
+        requireBinding().apply {
+            homeRecycler.isInvisible = indexingState is IndexingState.Indexing || albums.isEmpty()
+            homeNoMusic.isInvisible = albums.isEmpty()
+        }
         albumAdapter.update(albums, homeModel.albumInstructions.consume())
     }
 

app/src/main/java/org/oxycblt/auxio/home/list/ArtistListFragment.kt

@@ -21,6 +21,7 @@ package org.oxycblt.auxio.home.list
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.ViewGroup
+import androidx.core.view.isInvisible
 import androidx.fragment.app.activityViewModels
 import dagger.hilt.android.AndroidEntryPoint
 import org.oxycblt.auxio.R
@@ -35,6 +36,7 @@ import org.oxycblt.auxio.list.recycler.ArtistViewHolder
 import org.oxycblt.auxio.list.recycler.FastScrollRecyclerView
 import org.oxycblt.auxio.list.sort.Sort
 import org.oxycblt.auxio.music.Artist
+import org.oxycblt.auxio.music.IndexingState
 import org.oxycblt.auxio.music.Music
 import org.oxycblt.auxio.music.MusicParent
 import org.oxycblt.auxio.music.MusicViewModel
@@ -74,7 +76,13 @@ class ArtistListFragment :
             listener = this@ArtistListFragment
         }
 
-        collectImmediately(homeModel.artistList, ::updateArtists)
+        binding.homeNoMusicMsg.text = getString(R.string.lng_no_artists)
+
+        binding.homeChooseMusicSources.setOnClickListener {
+            homeModel.startChooseMusicLocations()
+        }
+
+        collectImmediately(homeModel.artistList, musicModel.indexingState, ::updateArtists)
         collectImmediately(listModel.selected, ::updateSelection)
         collectImmediately(
             playbackModel.song, playbackModel.parent, playbackModel.isPlaying, ::updatePlayback)
@@ -119,7 +127,11 @@ class ArtistListFragment :
         listModel.openMenu(R.menu.parent, item)
     }
 
-    private fun updateArtists(artists: List<Artist>) {
+    private fun updateArtists(artists: List<Artist>, indexingState: IndexingState?) {
+        requireBinding().apply {
+            homeRecycler.isInvisible = indexingState is IndexingState.Indexing || artists.isEmpty()
+            homeNoMusic.isInvisible = artists.isEmpty()
+        }
         artistAdapter.update(artists, homeModel.artistInstructions.consume())
     }
 

app/src/main/java/org/oxycblt/auxio/home/list/GenreListFragment.kt

@@ -21,6 +21,7 @@ package org.oxycblt.auxio.home.list
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.ViewGroup
+import androidx.core.view.isInvisible
 import androidx.fragment.app.activityViewModels
 import dagger.hilt.android.AndroidEntryPoint
 import org.oxycblt.auxio.R
@@ -35,6 +36,7 @@ import org.oxycblt.auxio.list.recycler.FastScrollRecyclerView
 import org.oxycblt.auxio.list.recycler.GenreViewHolder
 import org.oxycblt.auxio.list.sort.Sort
 import org.oxycblt.auxio.music.Genre
+import org.oxycblt.auxio.music.IndexingState
 import org.oxycblt.auxio.music.Music
 import org.oxycblt.auxio.music.MusicParent
 import org.oxycblt.auxio.music.MusicViewModel
@@ -73,7 +75,13 @@ class GenreListFragment :
             listener = this@GenreListFragment
         }
 
-        collectImmediately(homeModel.genreList, ::updateGenres)
+        binding.homeNoMusicMsg.text = getString(R.string.lng_no_genres)
+
+        binding.homeChooseMusicSources.setOnClickListener {
+            homeModel.startChooseMusicLocations()
+        }
+
+        collectImmediately(homeModel.genreList, musicModel.indexingState, ::updateGenres)
         collectImmediately(listModel.selected, ::updateSelection)
         collectImmediately(
             playbackModel.song, playbackModel.parent, playbackModel.isPlaying, ::updatePlayback)
@@ -118,7 +126,11 @@ class GenreListFragment :
         listModel.openMenu(R.menu.parent, item)
     }
 
-    private fun updateGenres(genres: List<Genre>) {
+    private fun updateGenres(genres: List<Genre>, indexingState: IndexingState?) {
+        requireBinding().apply {
+            homeRecycler.isInvisible = indexingState is IndexingState.Indexing || genres.isEmpty()
+            homeNoMusic.isInvisible = genres.isEmpty()
+        }
         genreAdapter.update(genres, homeModel.genreInstructions.consume())
     }
 

app/src/main/java/org/oxycblt/auxio/home/list/PlaylistListFragment.kt

@@ -21,6 +21,7 @@ package org.oxycblt.auxio.home.list
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.ViewGroup
+import androidx.core.view.isInvisible
 import androidx.fragment.app.activityViewModels
 import org.oxycblt.auxio.R
 import org.oxycblt.auxio.databinding.FragmentHomeListBinding
@@ -33,6 +34,7 @@ import org.oxycblt.auxio.list.adapter.SelectionIndicatorAdapter
 import org.oxycblt.auxio.list.recycler.FastScrollRecyclerView
 import org.oxycblt.auxio.list.recycler.PlaylistViewHolder
 import org.oxycblt.auxio.list.sort.Sort
+import org.oxycblt.auxio.music.IndexingState
 import org.oxycblt.auxio.music.Music
 import org.oxycblt.auxio.music.MusicParent
 import org.oxycblt.auxio.music.MusicViewModel
@@ -71,7 +73,13 @@ class PlaylistListFragment :
             listener = this@PlaylistListFragment
         }
 
-        collectImmediately(homeModel.playlistList, ::updatePlaylists)
+        binding.homeNoMusicMsg.text = getString(R.string.lng_no_playlists)
+
+        binding.homeChooseMusicSources.setOnClickListener {
+            homeModel.startChooseMusicLocations()
+        }
+
+        collectImmediately(homeModel.playlistList, musicModel.indexingState, ::updatePlaylists)
         collectImmediately(listModel.selected, ::updateSelection)
         collectImmediately(
             playbackModel.song, playbackModel.parent, playbackModel.isPlaying, ::updatePlayback)
@@ -116,7 +124,11 @@ class PlaylistListFragment :
         listModel.openMenu(R.menu.playlist, item)
     }
 
-    private fun updatePlaylists(playlists: List<Playlist>) {
+    private fun updatePlaylists(playlists: List<Playlist>, indexingState: IndexingState?) {
+        requireBinding().apply {
+            homeRecycler.isInvisible = indexingState is IndexingState.Indexing || playlists.isEmpty()
+            homeNoMusic.isInvisible = playlists.isEmpty()
+        }
         playlistAdapter.update(playlists, homeModel.playlistInstructions.consume())
     }
 

app/src/main/java/org/oxycblt/auxio/home/list/SongListFragment.kt

@@ -15,13 +15,14 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
- 
+
 package org.oxycblt.auxio.home.list
 
 import android.os.Bundle
 import android.text.format.DateUtils
 import android.view.LayoutInflater
 import android.view.ViewGroup
+import androidx.core.view.isInvisible
 import androidx.fragment.app.activityViewModels
 import dagger.hilt.android.AndroidEntryPoint
 import java.util.Formatter
@@ -35,6 +36,7 @@ import org.oxycblt.auxio.list.adapter.SelectionIndicatorAdapter
 import org.oxycblt.auxio.list.recycler.FastScrollRecyclerView
 import org.oxycblt.auxio.list.recycler.SongViewHolder
 import org.oxycblt.auxio.list.sort.Sort
+import org.oxycblt.auxio.music.IndexingState
 import org.oxycblt.auxio.music.Music
 import org.oxycblt.auxio.music.MusicParent
 import org.oxycblt.auxio.music.MusicViewModel
@@ -59,6 +61,7 @@ class SongListFragment :
     override val musicModel: MusicViewModel by activityViewModels()
     override val playbackModel: PlaybackViewModel by activityViewModels()
     private val songAdapter = SongAdapter(this)
+
     // Save memory by re-using the same formatter and string builder when creating popup text
     private val formatterSb = StringBuilder(64)
     private val formatter = Formatter(formatterSb)
@@ -76,10 +79,17 @@ class SongListFragment :
             listener = this@SongListFragment
         }
 
-        collectImmediately(homeModel.songList, ::updateSongs)
+        binding.homeNoMusicMsg.text = getString(R.string.lng_no_songs)
+
+        binding.homeChooseMusicSources.setOnClickListener {
+            homeModel.startChooseMusicLocations()
+        }
+
+        collectImmediately(homeModel.songList, musicModel.indexingState, ::updateSongs)
         collectImmediately(listModel.selected, ::updateSelection)
         collectImmediately(
-            playbackModel.song, playbackModel.parent, playbackModel.isPlaying, ::updatePlayback)
+            playbackModel.song, playbackModel.parent, playbackModel.isPlaying, ::updatePlayback
+        )
     }
 
     override fun onDestroyBinding(binding: FragmentHomeListBinding) {
@@ -117,11 +127,12 @@ class SongListFragment :
                 val dateAddedMillis = song.dateAdded.secsToMs()
                 formatterSb.setLength(0)
                 DateUtils.formatDateRange(
-                        context,
+                    context,
-                        formatter,
+                    formatter,
-                        dateAddedMillis,
+                    dateAddedMillis,
-                        dateAddedMillis,
+                    dateAddedMillis,
-                        DateUtils.FORMAT_ABBREV_ALL)
+                    DateUtils.FORMAT_ABBREV_ALL
+                )
                     .toString()
             }
 
@@ -142,8 +153,13 @@ class SongListFragment :
         listModel.openMenu(R.menu.song, item, homeModel.playWith)
     }
 
-    private fun updateSongs(songs: List<Song>) {
+    private fun updateSongs(songs: List<Song>, indexingState: IndexingState?) {
+        requireBinding().apply {
+            homeRecycler.isInvisible = indexingState is IndexingState.Indexing || songs.isEmpty()
+            homeNoMusic.isInvisible = songs.isEmpty()
+        }
         songAdapter.update(songs, homeModel.songInstructions.consume())
+
     }
 
     private fun updateSelection(selection: List<Music>) {

app/src/main/java/org/oxycblt/auxio/music/MusicSettings.kt

@@ -120,9 +120,7 @@ constructor(
         // TODO: Differentiate "hard reloads" (Need the cache) and "Soft reloads"
         //  (just need to manipulate data)
         when (key) {
-            getString(R.string.set_key_exclude_non_music),
+            getString(R.string.set_key_music_locations),
-            getString(R.string.set_key_music_dirs),
-            getString(R.string.set_key_music_dirs_include),
             getString(R.string.set_key_separators),
             getString(R.string.set_key_auto_sort_names) -> {
                 L.d("Dispatching indexing setting change for $key")

app/src/main/res/layout/fragment_home_list.xml

@@ -1,8 +1,52 @@
 <?xml version="1.0" encoding="utf-8"?>
-<org.oxycblt.auxio.list.recycler.FastScrollRecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/home_recycler"
+    android:animateLayoutChanges="true"
-    style="@style/Widget.Auxio.RecyclerView.Grid.WithAdaptiveFab"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="match_parent">
-    tools:listitem="@layout/item_song" />
+
+    <org.oxycblt.auxio.list.recycler.FastScrollRecyclerView
+        android:id="@+id/home_recycler"
+        style="@style/Widget.Auxio.RecyclerView.Grid.WithAdaptiveFab"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        tools:listitem="@layout/item_song" />
+
+
+    <LinearLayout
+        android:id="@+id/home_no_music"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:gravity="center_horizontal"
+        android:visibility="invisible"
+        android:orientation="vertical"
+        android:padding="@dimen/spacing_medium">
+
+        <ImageView
+            android:id="@+id/home_no_music_placeholder"
+            android:layout_width="@dimen/size_icon_huge"
+            android:layout_height="@dimen/size_icon_huge"
+            android:layout_marginBottom="@dimen/spacing_small"
+            android:src="@drawable/ic_song_24"
+            app:tint="?attr/colorOnSurface" />
+
+        <TextView
+            android:id="@+id/home_no_music_msg"
+            android:layout_width="256dp"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="@dimen/spacing_small"
+            tools:text="@string/lng_no_songs"
+            android:textAlignment="center"
+            android:textAppearance="?attr/textAppearanceBodyLarge" />
+
+        <org.oxycblt.auxio.ui.RippleFixMaterialButton
+            android:id="@+id/home_choose_music_sources"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/lbl_music_sources" />
+
+    </LinearLayout>
+
+</FrameLayout>

app/src/main/res/navigation/inner.xml

@@ -87,6 +87,9 @@
         <action
             android:id="@+id/report_error"
             app:destination="@id/error_details_dialog" />
+        <action
+            android:id="@+id/choose_locations"
+            app:destination="@id/music_dirs_dialog" />
     </fragment>
 
     <dialog
@@ -564,4 +567,10 @@
             android:name="parcel"
             app:argType="org.oxycblt.auxio.list.menu.Menu$ForSelection$Parcel" />
     </dialog>
+
+    <dialog
+        android:id="@+id/music_dirs_dialog"
+        android:name="org.oxycblt.auxio.music.dirs.MusicDirsDialog"
+        android:label="music_dirs_dialog"
+        tools:layout="@layout/dialog_music_dirs" />
 </navigation>

app/src/main/res/values/strings.xml

@@ -16,6 +16,7 @@
     <string name="lbl_observing">Monitoring music library</string>
     <!-- As in to retry loading music -->
     <string name="lbl_retry">Retry</string>
+    <string name="lbl_music_sources">Pick folders</string>
     <!-- As in to show additional information about a music loading error -->
     <string name="lbl_show_error_info">More</string>
     <!-- As in grant permission -->
@@ -214,6 +215,11 @@
         Starts Auxio using the previously saved state. If no saved state is available, all songs will be shuffled. Playback will start immediately.
         \n\nWARNING: Be careful controlling this service, if you close it and then try to use it again, you will probably crash the app.
     </string>
+    <string name="lng_no_songs">Your songs will show up here once you add some music.</string>
+    <string name="lng_no_albums">Your albums will show up here once you add some music.</string>
+    <string name="lng_no_artists">Your artists will show up here once you add some music.</string>
+    <string name="lng_no_genres">Your genres will show up here once you add some music.</string>
+    <string name="lng_no_playlists">Your playlists will show up here once you add some music.</string>
 
     <!-- Settings namespace | Settings-related labels -->
     <eat-comment />