support batch actions for parent items

app/src/main/java/com/dkanada/gramophone/adapter/PlaylistAdapter.java

@@ -22,9 +22,11 @@ import com.dkanada.gramophone.helper.menu.PlaylistMenuHelper;
 import com.dkanada.gramophone.helper.menu.SongsMenuHelper;
 import com.dkanada.gramophone.interfaces.CabHolder;
 import com.dkanada.gramophone.model.Playlist;
+import com.dkanada.gramophone.util.QueryUtil;
 import com.dkanada.gramophone.util.NavigationUtil;
 
-import java.util.ArrayList;
+import org.jellyfin.apiclient.model.querying.ItemQuery;
+
 import java.util.List;
 
 public class PlaylistAdapter extends AbsMultiSelectAdapter<PlaylistAdapter.ViewHolder, Playlist> {
@@ -126,13 +128,17 @@ public class PlaylistAdapter extends AbsMultiSelectAdapter<PlaylistAdapter.ViewH
 
     @Override
     protected void onMultipleItemAction(@NonNull MenuItem menuItem, @NonNull List<Playlist> selection) {
-        switch (menuItem.getItemId()) {
+        if (menuItem.getItemId() == R.id.action_delete_playlist) {
-            case R.id.action_delete_playlist:
             DeletePlaylistDialog.create(selection).show(activity.getSupportFragmentManager(), DeletePlaylistDialog.TAG);
-                break;
+        } else {
-            default:
+            for (Playlist playlist : selection) {
-                SongsMenuHelper.handleMenuClick(activity, new ArrayList<>(), menuItem.getItemId());
+                ItemQuery songs = new ItemQuery();
-                break;
+                songs.setParentId(playlist.id);
+
+                QueryUtil.getSongs(songs, (media) -> {
+                    SongsMenuHelper.handleMenuClick(activity, media, menuItem.getItemId());
+                });
+            }
         }
     }
 

app/src/main/java/com/dkanada/gramophone/adapter/album/AlbumAdapter.java

@@ -12,6 +12,7 @@ import androidx.annotation.Nullable;
 import androidx.core.util.Pair;
 import androidx.appcompat.app.AppCompatActivity;
 
+import com.dkanada.gramophone.util.QueryUtil;
 import com.kabouzeid.appthemehelper.util.ColorUtil;
 import com.kabouzeid.appthemehelper.util.MaterialValueHelper;
 import com.dkanada.gramophone.R;
@@ -28,7 +29,8 @@ import com.dkanada.gramophone.util.NavigationUtil;
 import com.dkanada.gramophone.util.PreferenceUtil;
 import com.simplecityapps.recyclerview_fastscroll.views.FastScrollRecyclerView;
 
-import java.util.ArrayList;
+import org.jellyfin.apiclient.model.querying.ItemQuery;
+
 import java.util.List;
 
 public class AlbumAdapter extends AbsMultiSelectAdapter<AlbumAdapter.ViewHolder, Album> implements FastScrollRecyclerView.SectionedAdapter {
@@ -170,7 +172,14 @@ public class AlbumAdapter extends AbsMultiSelectAdapter<AlbumAdapter.ViewHolder,
 
     @Override
     protected void onMultipleItemAction(@NonNull MenuItem menuItem, @NonNull List<Album> selection) {
-        SongsMenuHelper.handleMenuClick(activity, new ArrayList<>(), menuItem.getItemId());
+        for (Album album : selection) {
+            ItemQuery songs = new ItemQuery();
+            songs.setParentId(album.id);
+
+            QueryUtil.getSongs(songs, (media) -> {
+                SongsMenuHelper.handleMenuClick(activity, media, menuItem.getItemId());
+            });
+        }
     }
 
     @NonNull

app/src/main/java/com/dkanada/gramophone/adapter/artist/ArtistAdapter.java

@@ -12,6 +12,7 @@ import androidx.annotation.Nullable;
 import androidx.core.util.Pair;
 import androidx.appcompat.app.AppCompatActivity;
 
+import com.dkanada.gramophone.util.QueryUtil;
 import com.kabouzeid.appthemehelper.util.ColorUtil;
 import com.kabouzeid.appthemehelper.util.MaterialValueHelper;
 import com.dkanada.gramophone.R;
@@ -26,6 +27,8 @@ import com.dkanada.gramophone.util.MusicUtil;
 import com.dkanada.gramophone.util.NavigationUtil;
 import com.simplecityapps.recyclerview_fastscroll.views.FastScrollRecyclerView;
 
+import org.jellyfin.apiclient.model.querying.ItemQuery;
+
 import java.util.ArrayList;
 import java.util.List;
 
@@ -159,7 +162,17 @@ public class ArtistAdapter extends AbsMultiSelectAdapter<ArtistAdapter.ViewHolde
 
     @Override
     protected void onMultipleItemAction(@NonNull MenuItem menuItem, @NonNull List<Artist> selection) {
-        SongsMenuHelper.handleMenuClick(activity, new ArrayList<>(), menuItem.getItemId());
+        List<String> ids = new ArrayList<>();
+        for (Artist artist : selection) {
+            ids.add(artist.id);
+        }
+
+        ItemQuery songs = new ItemQuery();
+        songs.setArtistIds(ids.toArray(new String[0]));
+
+        QueryUtil.getSongs(songs, (media) -> {
+            SongsMenuHelper.handleMenuClick(activity, media, menuItem.getItemId());
+        });
     }
 
     @NonNull

app/src/main/res/menu/menu_media_selection.xml

@@ -18,6 +18,7 @@
         android:id="@+id/action_add_to_playlist"
         android:icon="@drawable/ic_playlist_add_white_24dp"
         android:title="@string/action_add_to_playlist"
+        android:visible="false"
         app:showAsAction="ifRoom" />
 
     <item

app/src/main/res/menu/menu_playlists_selection.xml

@@ -18,6 +18,7 @@
         android:id="@+id/action_add_to_playlist"
         android:icon="@drawable/ic_playlist_add_white_24dp"
         android:title="@string/action_add_to_playlist"
+        android:visible="false"
         app:showAsAction="ifRoom" />
 
     <item