Minor cleanup, added comments

ultrasonic/src/main/java/org/moire/ultrasonic/fragment/NowPlayingFragment.java

@@ -192,7 +192,7 @@ public class NowPlayingFragment extends Fragment {
                 {
                     if (deltaY < 0)
                     {
-                        nowPlayingEventDistributor.getValue().RaiseNowPlayingDismissedEvent();
+                        nowPlayingEventDistributor.getValue().raiseNowPlayingDismissedEvent();
                         return false;
                     }
                     if (deltaY > 0)

ultrasonic/src/main/java/org/moire/ultrasonic/service/MediaPlayerService.java

@@ -285,11 +285,11 @@ public class MediaPlayerService extends Service
                 if (currentPlaying != null)
                 {
                     updateNotification(localMediaPlayer.playerState, currentPlaying);
-                    nowPlayingEventDistributor.getValue().RaiseShowNowPlayingEvent();
+                    nowPlayingEventDistributor.getValue().raiseShowNowPlayingEvent();
                 }
                 else
                 {
-                    nowPlayingEventDistributor.getValue().RaiseHideNowPlayingEvent();
+                    nowPlayingEventDistributor.getValue().raiseHideNowPlayingEvent();
                     stopForeground(true);
                     localMediaPlayer.clearRemoteControl();
                     isInForeground = false;
@@ -501,12 +501,12 @@ public class MediaPlayerService extends Service
                     if (playerState == PlayerState.STARTED || playerState == PlayerState.PAUSED)
                     {
                         updateNotification(playerState, currentPlaying);
-                        nowPlayingEventDistributor.getValue().RaiseShowNowPlayingEvent();
+                        nowPlayingEventDistributor.getValue().raiseShowNowPlayingEvent();
                     }
                 }
                 else
                 {
-                    nowPlayingEventDistributor.getValue().RaiseHideNowPlayingEvent();
+                    nowPlayingEventDistributor.getValue().raiseHideNowPlayingEvent();
                     stopForeground(true);
                     localMediaPlayer.clearRemoteControl();
                     isInForeground = false;

ultrasonic/src/main/kotlin/org/moire/ultrasonic/di/AppPermanentStorageModule.kt

@@ -12,6 +12,9 @@ import org.moire.ultrasonic.util.Util
 
 const val SP_NAME = "Default_SP"
 
+/**
+ * This Koin module contains registration of classes related to permanent storage
+ */
 val appPermanentStorage = module {
     single(named(SP_NAME)) { Util.getPreferences(androidContext()) }
 

ultrasonic/src/main/kotlin/org/moire/ultrasonic/di/ApplicationModule.kt

@@ -8,6 +8,9 @@ import org.moire.ultrasonic.util.NowPlayingEventDistributor
 import org.moire.ultrasonic.util.PermissionUtil
 import org.moire.ultrasonic.util.ThemeChangedEventDistributor
 
+/**
+ * This Koin module contains the registration of general classes needed for Ultrasonic
+ */
 val applicationModule = module {
     single { ActiveServerProvider(get(), androidContext()) }
     single { ImageLoaderProvider(androidContext()) }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/di/BaseNetworkModule.kt

@@ -4,7 +4,7 @@ import okhttp3.OkHttpClient
 import org.koin.dsl.module
 
 /**
- * Provides base network dependencies.
+ * This Koin module provides base network dependencies.
  */
 val baseNetworkModule = module {
     single { OkHttpClient.Builder().build() }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/di/DirectoriesModule.kt

@@ -5,6 +5,9 @@ import org.koin.dsl.module
 import org.moire.ultrasonic.cache.AndroidDirectories
 import org.moire.ultrasonic.cache.Directories
 
+/**
+ * This Koin module contains the registration for Directories
+ */
 val directoriesModule = module {
     single { AndroidDirectories(get()) } bind Directories::class
 }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/di/FeatureFlagsModule.kt

@@ -4,6 +4,9 @@ import org.koin.android.ext.koin.androidContext
 import org.koin.dsl.module
 import org.moire.ultrasonic.featureflags.FeatureStorage
 
+/**
+ * This Koin module contains the registration for the Feature Flags
+ */
 val featureFlagsModule = module {
     factory { FeatureStorage(androidContext()) }
 }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/di/MediaPlayerModule.kt

@@ -13,6 +13,9 @@ import org.moire.ultrasonic.service.MediaPlayerControllerImpl
 import org.moire.ultrasonic.service.MediaPlayerLifecycleSupport
 import org.moire.ultrasonic.util.ShufflePlayBuffer
 
+/**
+ * This Koin module contains the registration of classes related to the media player
+ */
 val mediaPlayerModule = module {
     single<MediaPlayerController> {
         MediaPlayerControllerImpl(androidContext(), get(), get(), get(), get(), get())

ultrasonic/src/main/kotlin/org/moire/ultrasonic/di/MusicServiceModule.kt

@@ -27,6 +27,9 @@ import org.moire.ultrasonic.subsonic.VideoPlayer
 import org.moire.ultrasonic.subsonic.loader.image.SubsonicImageLoader
 import org.moire.ultrasonic.util.Constants
 
+/**
+ * This Koin module contains the registration of classes related to the Music Services
+ */
 internal const val ONLINE_MUSIC_SERVICE = "OnlineMusicService"
 internal const val OFFLINE_MUSIC_SERVICE = "OfflineMusicService"
 

ultrasonic/src/main/kotlin/org/moire/ultrasonic/fragment/EditServerFragment.kt

@@ -30,6 +30,9 @@ import org.moire.ultrasonic.util.ModalBackgroundTask
 import org.moire.ultrasonic.util.Util
 import timber.log.Timber
 
+/**
+ * Displays a form where server settings can be created / edited
+ */
 class EditServerFragment : Fragment(), OnBackPressedHandler {
     companion object {
         const val EDIT_SERVER_INTENT_INDEX = "index"

ultrasonic/src/main/kotlin/org/moire/ultrasonic/fragment/FragmentTitle.kt

@@ -3,10 +3,13 @@ package org.moire.ultrasonic.fragment
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 
+/**
+ * Contains utility functions related to Fragment title handling
+ */
 class FragmentTitle {
     companion object {
         fun setTitle(fragment: Fragment, title: CharSequence?) {
-            (fragment.activity as AppCompatActivity).supportActionBar?.setTitle(title)
+            (fragment.activity as AppCompatActivity).supportActionBar?.title = title
         }
 
         fun setTitle(fragment: Fragment, id: Int) {
@@ -16,17 +19,5 @@ class FragmentTitle {
         fun getTitle(fragment: Fragment): CharSequence? {
             return (fragment.activity as AppCompatActivity).supportActionBar?.title
         }
-
-        fun setSubtitle(fragment: Fragment, title: CharSequence?) {
-            (fragment.activity as AppCompatActivity).supportActionBar?.setSubtitle(title)
-        }
-
-        fun setSubtitle(fragment: Fragment, id: Int) {
-            (fragment.activity as AppCompatActivity).supportActionBar?.setSubtitle(id)
-        }
-
-        fun getSubtitle(fragment: Fragment): CharSequence? {
-            return (fragment.activity as AppCompatActivity).supportActionBar?.subtitle
-        }
     }
 }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/fragment/SelectArtistFragment.kt

@@ -24,6 +24,9 @@ import org.moire.ultrasonic.subsonic.ImageLoaderProvider
 import org.moire.ultrasonic.util.Constants
 import org.moire.ultrasonic.util.Util
 
+/**
+ * Displays the list of Artists from the media library
+ */
 class SelectArtistFragment : Fragment() {
     private val activeServerProvider: ActiveServerProvider by inject()
     private val serverSettingsModel: ServerSettingsModel by viewModel()
@@ -166,79 +169,79 @@ class SelectArtistFragment : Fragment() {
                 downloadHandler.downloadRecursively(
                     this,
                     artist.id,
-                    false,
-                    false,
-                    true,
-                    false,
-                    false,
-                    false,
-                    false,
-                    true
+                    save = false,
+                    append = false,
+                    autoPlay = true,
+                    shuffle = false,
+                    background = false,
+                    playNext = false,
+                    unpin = false,
+                    isArtist = true
                 )
             R.id.artist_menu_play_next ->
                 downloadHandler.downloadRecursively(
                     this,
                     artist.id,
-                    false,
-                    false,
-                    true,
-                    true,
-                    false,
-                    true,
-                    false,
-                    true
+                    save = false,
+                    append = false,
+                    autoPlay = true,
+                    shuffle = true,
+                    background = false,
+                    playNext = true,
+                    unpin = false,
+                    isArtist = true
                 )
             R.id.artist_menu_play_last ->
                 downloadHandler.downloadRecursively(
                     this,
                     artist.id,
-                    false,
-                    true,
-                    false,
-                    false,
-                    false,
-                    false,
-                    false,
-                    true
+                    save = false,
+                    append = true,
+                    autoPlay = false,
+                    shuffle = false,
+                    background = false,
+                    playNext = false,
+                    unpin = false,
+                    isArtist = true
                 )
             R.id.artist_menu_pin ->
                 downloadHandler.downloadRecursively(
                     this,
                     artist.id,
-                    true,
-                    true,
-                    false,
-                    false,
-                    false,
-                    false,
-                    false,
-                    true
+                    save = true,
+                    append = true,
+                    autoPlay = false,
+                    shuffle = false,
+                    background = false,
+                    playNext = false,
+                    unpin = false,
+                    isArtist = true
                 )
             R.id.artist_menu_unpin ->
                 downloadHandler.downloadRecursively(
                     this,
                     artist.id,
-                    false,
-                    false,
-                    false,
-                    false,
-                    false,
-                    false,
-                    true,
-                    true
+                    save = false,
+                    append = false,
+                    autoPlay = false,
+                    shuffle = false,
+                    background = false,
+                    playNext = false,
+                    unpin = true,
+                    isArtist = true
                 )
             R.id.artist_menu_download ->
                 downloadHandler.downloadRecursively(
                     this,
                     artist.id,
-                    false,
-                    false,
-                    false,
-                    false,
-                    true,
-                    false,
-                    false,
-                    true
+                    save = false,
+                    append = false,
+                    autoPlay = false,
+                    shuffle = false,
+                    background = true,
+                    playNext = false,
+                    unpin = false,
+                    isArtist = true
                 )
         }
         return true

ultrasonic/src/main/kotlin/org/moire/ultrasonic/fragment/ServerSelectorFragment.kt

@@ -23,6 +23,9 @@ import org.moire.ultrasonic.service.MediaPlayerController
 import org.moire.ultrasonic.util.Util
 import timber.log.Timber
 
+/**
+ * Displays the list of configured servers, they can be selected or edited
+ */
 class ServerSelectorFragment : Fragment() {
     companion object {
         const val SERVER_SELECTOR_MANAGE_MODE = "manageMode"

ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/MusicServiceFactory.kt

@@ -24,7 +24,6 @@ import org.koin.core.component.get
 import org.koin.core.context.loadKoinModules
 import org.koin.core.context.unloadKoinModules
 import org.koin.core.qualifier.named
-import org.moire.ultrasonic.cache.Directories
 import org.moire.ultrasonic.data.ActiveServerProvider
 import org.moire.ultrasonic.di.OFFLINE_MUSIC_SERVICE
 import org.moire.ultrasonic.di.ONLINE_MUSIC_SERVICE
@@ -50,10 +49,4 @@ object MusicServiceFactory : KoinComponent {
         unloadKoinModules(musicServiceModule)
         loadKoinModules(musicServiceModule)
     }
-
-    @JvmStatic
-    fun getServerId() = get<String>(named("ServerID"))
-
-    @JvmStatic
-    fun getDirectories() = get<Directories>()
 }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/RESTMusicService.kt

@@ -65,6 +65,7 @@ import org.moire.ultrasonic.util.Util
 import timber.log.Timber
 
 /**
+ * This Music Service implementation connects to a server using the Subsonic REST API
  * @author Sindre Mehus
  */
 open class RESTMusicService(

ultrasonic/src/main/kotlin/org/moire/ultrasonic/subsonic/DownloadHandler.kt

@@ -15,11 +15,14 @@ import org.moire.ultrasonic.util.EntryByDiscAndTrackComparator
 import org.moire.ultrasonic.util.ModalBackgroundTask
 import org.moire.ultrasonic.util.Util
 
+/**
+ * Retrieves a list of songs and adds them to the now playing list
+ */
 class DownloadHandler(
     val mediaPlayerController: MediaPlayerController,
     val networkAndStorageChecker: NetworkAndStorageChecker
 ) {
-    private val MAX_SONGS = 500
+    private val maxSongs = 500
 
     fun download(
         fragment: Fragment,
@@ -102,16 +105,16 @@ class DownloadHandler(
             fragment,
             id,
             name,
-            false,
-            false,
-            save,
-            append,
-            autoplay,
-            shuffle,
-            background,
-            playNext,
-            unpin,
-            false
+            isShare = false,
+            isDirectory = false,
+            save = save,
+            append = append,
+            autoPlay = autoplay,
+            shuffle = shuffle,
+            background = background,
+            playNext = playNext,
+            unpin = unpin,
+            isArtist = false
         )
     }
 
@@ -131,16 +134,16 @@ class DownloadHandler(
             fragment,
             id,
             name,
-            true,
-            false,
-            save,
-            append,
-            autoplay,
-            shuffle,
-            background,
-            playNext,
-            unpin,
-            false
+            isShare = true,
+            isDirectory = false,
+            save = save,
+            append = append,
+            autoPlay = autoplay,
+            shuffle = shuffle,
+            background = background,
+            playNext = playNext,
+            unpin = unpin,
+            isArtist = false
         )
     }
 
@@ -174,7 +177,7 @@ class DownloadHandler(
         )
     }
 
-    fun downloadRecursively(
+    private fun downloadRecursively(
         fragment: Fragment,
         id: String,
         name: String?,
@@ -232,18 +235,22 @@ class DownloadHandler(
                 parent: MusicDirectory,
                 songs: MutableList<MusicDirectory.Entry>
             ) {
-                if (songs.size > MAX_SONGS) {
+                if (songs.size > maxSongs) {
                     return
                 }
-                for (song in parent.getChildren(false, true)) {
+                for (song in parent.getChildren(includeDirs = false, includeFiles = true)) {
                     if (!song.isVideo) {
                         songs.add(song)
                     }
                 }
                 val musicService = getMusicService(activity)
-                for ((id1, _, _, title) in parent.getChildren(true, false)) {
-                    var root: MusicDirectory
-                    root = if (
+                for (
+                    (id1, _, _, title) in parent.getChildren(
+                        includeDirs = true,
+                        includeFiles = false
+                    )
+                ) {
+                    val root: MusicDirectory = if (
                         !isOffline(activity) &&
                         Util.getShouldUseId3Tags(activity)
                     ) musicService.getAlbum(id1, title, false, activity)
@@ -257,7 +264,7 @@ class DownloadHandler(
                 id: String,
                 songs: MutableCollection<MusicDirectory.Entry>
             ) {
-                if (songs.size > MAX_SONGS) {
+                if (songs.size > maxSongs) {
                     return
                 }
                 val musicService = getMusicService(activity)

ultrasonic/src/main/kotlin/org/moire/ultrasonic/subsonic/ImageLoaderProvider.kt

@@ -9,6 +9,9 @@ import org.moire.ultrasonic.util.ImageLoader
 import org.moire.ultrasonic.util.LegacyImageLoader
 import org.moire.ultrasonic.util.Util
 
+/**
+ * Handles the lifetime of the Image Loader
+ */
 class ImageLoaderProvider(val context: Context) {
     private var imageLoader: ImageLoader? = null
 
@@ -32,13 +35,13 @@ class ImageLoaderProvider(val context: Context) {
             )
             val isNewImageLoaderEnabled = get(FeatureStorage::class.java)
                 .isFeatureEnabled(Feature.NEW_IMAGE_DOWNLOADER)
-            if (isNewImageLoaderEnabled) {
-                imageLoader = SubsonicImageLoaderProxy(
+            imageLoader = if (isNewImageLoaderEnabled) {
+                SubsonicImageLoaderProxy(
                     legacyImageLoader,
                     get(SubsonicImageLoader::class.java)
                 )
             } else {
-                imageLoader = legacyImageLoader
+                legacyImageLoader
             }
             imageLoader!!.startImageLoader()
         }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/subsonic/NetworkAndStorageChecker.kt

@@ -5,6 +5,9 @@ import org.moire.ultrasonic.R
 import org.moire.ultrasonic.data.ActiveServerProvider.Companion.isOffline
 import org.moire.ultrasonic.util.Util
 
+/**
+ * Utility class for checking the availability of the network and storage
+ */
 class NetworkAndStorageChecker(val context: Context) {
     fun warnIfNetworkOrStorageUnavailable() {
         if (!Util.isExternalStoragePresent()) {

ultrasonic/src/main/kotlin/org/moire/ultrasonic/subsonic/ShareHandler.kt

@@ -23,6 +23,9 @@ import org.moire.ultrasonic.util.TimeSpan
 import org.moire.ultrasonic.util.TimeSpanPicker
 import org.moire.ultrasonic.util.Util
 
+/**
+ * This class handles sharing items in the media library
+ */
 class ShareHandler(val context: Context) {
     private var shareDescription: EditText? = null
     private var timeSpanPicker: TimeSpanPicker? = null
@@ -93,7 +96,7 @@ class ShareHandler(val context: Context) {
                 fragment.activity?.startActivity(
                     Intent.createChooser(
                         intent,
-                        context.getResources().getString(R.string.share_via)
+                        context.resources.getString(R.string.share_via)
                     )
                 )
             }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/subsonic/VideoPlayer.kt

@@ -5,6 +5,9 @@ import org.moire.ultrasonic.R
 import org.moire.ultrasonic.domain.MusicDirectory
 import org.moire.ultrasonic.util.Util
 
+/**
+ * This utility class helps starting video playback
+ */
 class VideoPlayer(val context: Context) {
     fun playVideo(entry: MusicDirectory.Entry?) {
         if (!Util.isNetworkConnected(context)) {

ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/NowPlayingEventDistributor.kt

@@ -1,7 +1,11 @@
 package org.moire.ultrasonic.util
 
+/**
+ * This class distributes Now Playing related events to its subscribers.
+ * It is a primitive implementation of a pub-sub event bus
+ */
 class NowPlayingEventDistributor {
-    var eventListenerList: MutableList<NowPlayingEventListener> =
+    private var eventListenerList: MutableList<NowPlayingEventListener> =
         listOf<NowPlayingEventListener>().toMutableList()
 
     fun subscribe(listener: NowPlayingEventListener) {
@@ -12,15 +16,15 @@ class NowPlayingEventDistributor {
         eventListenerList.remove(listener)
     }
 
-    fun RaiseShowNowPlayingEvent() {
+    fun raiseShowNowPlayingEvent() {
         eventListenerList.forEach { listener -> listener.onShowNowPlaying() }
     }
 
-    fun RaiseHideNowPlayingEvent() {
+    fun raiseHideNowPlayingEvent() {
         eventListenerList.forEach { listener -> listener.onHideNowPlaying() }
     }
 
-    fun RaiseNowPlayingDismissedEvent() {
+    fun raiseNowPlayingDismissedEvent() {
         eventListenerList.forEach { listener -> listener.onDismissNowPlaying() }
     }
 }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/NowPlayingEventListener.kt

@@ -1,5 +1,8 @@
 package org.moire.ultrasonic.util
 
+/**
+ * Callback interface for Now Playing event subscribers
+ */
 interface NowPlayingEventListener {
     fun onDismissNowPlaying()
     fun onHideNowPlaying()

ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/ThemeChangedEventDistributor.kt

@@ -1,5 +1,9 @@
 package org.moire.ultrasonic.util
 
+/**
+ * This class distributes Theme change related events to its subscribers.
+ * It is a primitive implementation of a pub-sub event bus
+ */
 class ThemeChangedEventDistributor {
     var eventListenerList: MutableList<ThemeChangedEventListener> =
         listOf<ThemeChangedEventListener>().toMutableList()

ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/ThemeChangedEventListener.kt

@@ -1,5 +1,9 @@
 package org.moire.ultrasonic.util
 
+
+/**
+ * Callback interface for Theme change event subscribers
+ */
 interface ThemeChangedEventListener {
     fun onThemeChanged()
 }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/view/SongView.kt

@@ -340,8 +340,8 @@ class SongView(context: Context) : UpdateView(context), Checkable {
     fun maximizeOrMinimize() {
         isMaximized = !isMaximized
 
-        viewHolder?.title?.setSingleLine(!isMaximized)
-        viewHolder?.artist?.setSingleLine(!isMaximized)
+        viewHolder?.title?.isSingleLine = !isMaximized
+        viewHolder?.artist?.isSingleLine = !isMaximized
     }
 
     enum class ImageType {