Add genre support to search

Add the ability for genres to show up in search, as long as the library is currently displaying them.

AuxioTODO

@@ -34,7 +34,7 @@ TODOs surrounded with !s are things I tried to do, but failed for reasons includ
 - Fix issue where fast navigations will cause the app to not display anything
 
 /other/
-- Collapse show constants into ShowMode enum
+- Standardize fragment init
 
 To be added:
 /prefs/

app/src/main/java/org/oxycblt/auxio/library/LibraryFragment.kt

@@ -6,6 +6,7 @@ import android.view.LayoutInflater
 import android.view.MenuItem
 import android.view.View
 import android.view.ViewGroup
+import android.widget.ImageView
 import androidx.appcompat.widget.SearchView
 import androidx.core.content.ContextCompat
 import androidx.core.view.forEach
@@ -58,8 +59,9 @@ class LibraryFragment : Fragment(), SearchView.OnQueryTextListener {
             val item = findItem(R.id.action_search)
             val searchView = item.actionView as SearchView
 
-            // Set up the SearchView itself
+            searchView.findViewById<ImageView>(androidx.appcompat.R.id.search_go_btn)
-            searchView.queryHint = getString(R.string.hint_search_library)
+                .setImageResource(R.drawable.ic_back)
+
             searchView.setOnQueryTextListener(this@LibraryFragment)
             searchView.setOnQueryTextFocusChangeListener { _, hasFocus ->
                 libraryModel.updateSearchFocusStatus(hasFocus)
@@ -139,7 +141,9 @@ class LibraryFragment : Fragment(), SearchView.OnQueryTextListener {
 
         libraryModel.searchResults.observe(viewLifecycleOwner) {
             if (libraryModel.searchHasFocus) {
-                searchAdapter.submitList(it)
+                searchAdapter.submitList(it) {
+                    binding.libraryRecycler.scrollToPosition(0)
+                }
             }
         }
 

app/src/main/java/org/oxycblt/auxio/library/LibraryViewModel.kt

@@ -45,6 +45,7 @@ class LibraryViewModel : ViewModel() {
     }
 
     fun updateSearchQuery(query: String, musicModel: MusicViewModel) {
+        // Don't bother if the query is blank.
         if (query == "") {
             resetQuery()
 
@@ -52,18 +53,32 @@ class LibraryViewModel : ViewModel() {
         }
 
         // Search MusicViewModel for all the items [Artists, Albums, Songs] that contain
-        // the query, and update the LiveData with those items. This is done on a seperate
+        // the query, and update the LiveData with those items. This is done on a separate
-        // thread as it can be a very intensive operation for large music libraries.
+        // thread as it can be a very long operation for large music libraries.
         viewModelScope.launch {
             val combined = mutableListOf<BaseModel>()
+            val children = showMode.value!!.getChildren()
 
+            // If the Library ShowMode supports it, include artists / genres in the search.
+            if (children.contains(ShowMode.SHOW_GENRES)) {
+                val genres = musicModel.genres.value!!.filter { it.name.contains(query, true) }
+
+                if (genres.isNotEmpty()) {
+                    combined.add(Header(id = ShowMode.SHOW_GENRES.constant))
+                    combined.addAll(genres)
+                }
+            }
+
+            if (children.contains(ShowMode.SHOW_ARTISTS)) {
                 val artists = musicModel.artists.value!!.filter { it.name.contains(query, true) }
 
                 if (artists.isNotEmpty()) {
                     combined.add(Header(id = ShowMode.SHOW_ARTISTS.constant))
                     combined.addAll(artists)
                 }
+            }
 
+            // Albums & Songs are always included.
             val albums = musicModel.albums.value!!.filter { it.name.contains(query, true) }
 
             if (albums.isNotEmpty()) {

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

@@ -97,7 +97,7 @@ fun TextView.bindGenreCounts(genre: Genre) {
         R.plurals.format_artist_count, genre.numArtists, genre.numArtists
     )
     val albums = context.resources.getQuantityString(
-        R.plurals.format_song_count, genre.numAlbums, genre.numAlbums
+        R.plurals.format_album_count, genre.numAlbums, genre.numAlbums
     )
 
     text = context.getString(R.string.format_double_counts, artists, albums)

app/src/main/java/org/oxycblt/auxio/recycler/ShowMode.kt

@@ -1,5 +1,13 @@
 package org.oxycblt.auxio.recycler
 
 enum class ShowMode(val constant: Long) {
-    SHOW_GENRES(10), SHOW_ARTISTS(11), SHOW_ALBUMS(12), SHOW_SONGS(13);
+    SHOW_GENRES(0), SHOW_ARTISTS(1), SHOW_ALBUMS(2), SHOW_SONGS(3);
+
+    // Make a slice of all the values that this ShowMode covers.
+    // ex. SHOW_ARTISTS would return SHOW_ARTISTS, SHOW_ALBUMS, and SHOW_SONGS
+    fun getChildren(): List<ShowMode> {
+        val vals = values()
+
+        return vals.slice(vals.indexOf(this) until vals.size)
+    }
 }

app/src/main/java/org/oxycblt/auxio/recycler/viewholders/ModelHolders.kt

@@ -14,8 +14,8 @@ import org.oxycblt.auxio.music.Header
 import org.oxycblt.auxio.music.Song
 import org.oxycblt.auxio.recycler.ClickListener
 
-// Basic ViewHolders for each music model.
+// Shared ViewHolders for each ViewModel, providing basic information
-
+// All new instances should be created with from(context, listener) instead of direct instantiation.
 class GenreViewHolder private constructor(
     listener: ClickListener<Genre>,
     private val binding: ItemGenreBinding

app/src/main/java/org/oxycblt/auxio/theme/ThemeUtils.kt

@@ -65,6 +65,7 @@ fun Int.toColor(context: Context): Int {
     }
 }
 
+// Resolve an attribute into a color
 @ColorInt
 fun resolveAttr(context: Context, @AttrRes attr: Int): Int {
     // Convert the attribute into its color
@@ -82,6 +83,7 @@ fun resolveAttr(context: Context, @AttrRes attr: Int): Int {
     return color.toColor(context)
 }
 
+// Apply a color to a Menu Item
 fun MenuItem.applyColor(color: Int) {
     SpannableString(title).apply {
         setSpan(ForegroundColorSpan(color), 0, length, SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE)

app/src/main/res/drawable/ic_back.xml

@@ -3,7 +3,7 @@
     android:height="24dp"
     android:viewportWidth="24"
     android:viewportHeight="24"
-    android:tint="?android:attr/colorControlNormal">
+    android:tint="@color/control_color">
     <path
         android:fillColor="@android:color/white"
         android:pathData="M20,11H7.83l5.59,-5.59L12,4l-8,8 8,8 1.41,-1.41L7.83,13H20v-2z" />

app/src/main/res/drawable/ic_search.xml

@@ -4,7 +4,7 @@
     android:height="24dp"
     android:viewportWidth="24"
     android:viewportHeight="24"
-    android:tint="?attr/colorControlNormal">
+    android:tint="@color/control_color">
     <path
         android:fillColor="@android:color/white"
         android:pathData="M15.5,14h-0.79l-0.28,-0.27C15.41,12.59 16,11.11 16,9.5 16,5.91 13.09,3 9.5,3S3,5.91 3,9.5 5.91,16 9.5,16c1.61,0 3.09,-0.59 4.23,-1.57l0.27,0.28v0.79l5,4.99L20.49,19l-4.99,-5zM9.5,14C7.01,14 5,11.99 5,9.5S7.01,5 9.5,5 14,7.01 14,9.5 11.99,14 9.5,14z" />

app/src/main/res/drawable/ic_sort_none.xml

@@ -4,7 +4,7 @@
     android:height="24dp"
     android:viewportWidth="24"
     android:viewportHeight="24"
-    android:tint="?android:attr/colorControlNormal">
+    android:tint="@color/control_color">
     <path
         android:fillColor="@android:color/white"
         android:pathData="M3,18h6v-2L3,16v2zM3,6v2h18L21,6L3,6zM3,13h12v-2L3,11v2z" />

app/src/main/res/values-night/colors.xml

@@ -4,6 +4,7 @@
     <color name="divider_color">#323232</color>
     <color name="selection_color">#484848</color>
     <color name="inactive_color">#404040</color>
+    <color name="control_color">#ffffff</color>
 
     <!--
     Base color set derived from Music Player GO.

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

@@ -4,6 +4,7 @@
     <color name="divider_color">#cbcbcb</color>
     <color name="selection_color">#cbcbcb</color>
     <color name="inactive_color">#c4c4c4</color>
+    <color name="control_color">#202020</color>
 
     <!--
     Base color set derived from Music Player GO.

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

@@ -43,12 +43,11 @@
     <string name="placeholder_album">Unknown Album</string>
     <string name="placeholder_no_date">No Date</string>
 
-    <!-- Format Namespace | Value formatting -->
+    <!-- Format Namespace | Value formatting/plurals -->
     <string name="format_info">%1$s / %2$s</string>
     <string name="format_double_info">%1$s / %2$s / %3$s</string>
     <string name="format_double_counts">%1$s, %2$s</string>
 
-    <!-- Format Namespace | Value formatting with plurals -->
     <plurals name="format_song_count">
         <item quantity="one">%s Song</item>
         <item quantity="other">%s Songs</item>

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

@@ -18,10 +18,7 @@
         <item name="android:textColor">?android:attr/colorPrimary</item>
     </style>
 
-    <style name="Toolbar.SearchViewStyle" parent="Widget.AppCompat.SearchView">
+    <style name="Toolbar.SearchViewStyle" parent="Widget.AppCompat.SearchView"/>
-        <item name="android:searchIcon">@drawable/ic_search</item>
-        <item name="android:closeIcon">@drawable/ic_back</item>
-    </style>
 
     <style name="DetailHeader">
         <item name="android:textAppearance">?android:attr/textAppearanceLarge</item>

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

@@ -38,25 +38,21 @@
         <item name="colorSecondary">@color/light_blue</item>
     </style>
 
-
     <style name="Theme.Cyan" parent="Theme.Base">
         <item name="colorPrimary">@color/cyan</item>
         <item name="colorSecondary">@color/cyan</item>
     </style>
 
-
     <style name="Theme.Teal" parent="Theme.Base">
         <item name="colorPrimary">@color/teal</item>
         <item name="colorSecondary">@color/teal</item>
     </style>
 
-
     <style name="Theme.Green" parent="Theme.Base">
         <item name="colorPrimary">@color/green</item>
         <item name="colorSecondary">@color/green</item>
     </style>
 
-
     <style name="Theme.LightGreen" parent="Theme.Base">
         <item name="colorPrimary">@color/light_green</item>
         <item name="colorSecondary">@color/light_green</item>