Add fastscroll to lists with RecyclerView

app/build.gradle

@@ -113,6 +113,7 @@ dependencies {
     implementation 'org.jmdns:jmdns:3.5.1'
     implementation 'at.blogc:expandabletextview:1.0.3'
     implementation 'com.sothree.slidinguppanel:library:3.3.1'
+    implementation 'com.simplecityapps:recyclerview-fastscroll:1.0.20'
 
     androidTestImplementation 'com.android.support.test:runner:1.0.1'
     androidTestImplementation 'com.android.support.test:rules:1.0.1'

app/src/main/java/org/xbmc/kore/ui/RecyclerViewCursorAdapter.java

@@ -20,11 +20,15 @@ import android.database.Cursor;
 import android.support.v7.widget.RecyclerView;
 import android.view.View;
 
-abstract public class RecyclerViewCursorAdapter extends RecyclerView.Adapter<RecyclerViewCursorAdapter.CursorViewHolder> {
+import com.simplecityapps.recyclerview_fastscroll.views.FastScrollRecyclerView;
 
-    private boolean dataValid;
+abstract public class RecyclerViewCursorAdapter
+        extends RecyclerView.Adapter<RecyclerViewCursorAdapter.CursorViewHolder>
+        implements FastScrollRecyclerView.SectionedAdapter {
+
+    protected boolean dataValid;
     private int rowIDColumn;
-    private Cursor cursor;
+    protected Cursor cursor;
 
     @Override
     public void onBindViewHolder(CursorViewHolder holder, int position) {
@@ -59,6 +63,25 @@ abstract public class RecyclerViewCursorAdapter extends RecyclerView.Adapter<Rec
         return cursor.getLong(rowIDColumn);
     }
 
+    public String getSectionName(int position) {
+        if (!dataValid) {
+            throw new IllegalStateException("Cursor is in an invalid state.");
+        }
+        if (!cursor.moveToPosition(position)) {
+            throw new IllegalStateException("Could not move cursor to position " + position);
+        }
+
+        return cursor.getString(getSectionColumnIdx()).substring(0, 1).toUpperCase();
+    }
+
+    /**
+     * Should return the cursor column index that contains the corresponding field to be used
+     * on the fastscroller. Should be a string!
+     *
+     * @return Cursor column index of the field to show in the fastscroller
+     */
+    abstract protected int getSectionColumnIdx();
+
     public void swapCursor(Cursor newCursor) {
         if (newCursor == cursor) {
             return;

app/src/main/java/org/xbmc/kore/ui/sections/audio/AlbumListFragment.java

@@ -87,7 +87,7 @@ public class AlbumListFragment extends AbstractCursorListFragment {
 
     /**
      * Use this to display all albums for a specific genre
-     * @param genreId
+     * @param genreId genre id
      */
     public void setGenre(int genreId) {
         Bundle args = new Bundle();
@@ -216,12 +216,12 @@ public class AlbumListFragment extends AbstractCursorListFragment {
     }
 
     @Override
-    public void onAttach(Activity activity) {
+    public void onAttach(Context ctx) {
-        super.onAttach(activity);
+        super.onAttach(ctx);
         try {
-            listenerActivity = (OnAlbumSelectedListener) activity;
+            listenerActivity = (OnAlbumSelectedListener) ctx;
         } catch (ClassCastException e) {
-            throw new ClassCastException(activity.toString() + " must implement OnAlbumSelectedListener");
+            throw new ClassCastException(ctx.toString() + " must implement OnAlbumSelectedListener");
         }
 
         setSupportsSearch(true);
@@ -317,6 +317,8 @@ public class AlbumListFragment extends AbstractCursorListFragment {
                 popupMenu.show();
             }
         };
+
+        protected int getSectionColumnIdx() { return AlbumListQuery.TITLE; }
     }
 
     /**

app/src/main/java/org/xbmc/kore/ui/sections/audio/ArtistListFragment.java

@@ -94,12 +94,12 @@ public class ArtistListFragment extends AbstractCursorListFragment {
     }
 
     @Override
-    public void onAttach(Activity activity) {
+    public void onAttach(Context context) {
-        super.onAttach(activity);
+        super.onAttach(context);
         try {
-            listenerActivity = (OnArtistSelectedListener) activity;
+            listenerActivity = (OnArtistSelectedListener) context;
         } catch (ClassCastException e) {
-            throw new ClassCastException(activity.toString() + " must implement OnArtistSelectedListener");
+            throw new ClassCastException(context.toString() + " must implement OnArtistSelectedListener");
         }
         setSupportsSearch(true);
     }
@@ -154,7 +154,7 @@ public class ArtistListFragment extends AbstractCursorListFragment {
         @Override
         public CursorViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
             View view = LayoutInflater.from(fragment.getContext())
-                                      .inflate(R.layout.grid_item_artist, parent, false);
+                    .inflate(R.layout.grid_item_artist, parent, false);
 
             return new ViewHolder(view, fragment.getContext(), hostManager, artWidth, artHeight, artistlistItemMenuClickListener);
         }
@@ -186,6 +186,8 @@ public class ArtistListFragment extends AbstractCursorListFragment {
                 popupMenu.show();
             }
         };
+
+        protected int getSectionColumnIdx() { return ArtistListQuery.ARTIST; }
     }
 
     /**

app/src/main/java/org/xbmc/kore/ui/sections/audio/AudioGenresListFragment.java

@@ -90,12 +90,12 @@ public class AudioGenresListFragment extends AbstractCursorListFragment {
     }
 
     @Override
-    public void onAttach(Activity activity) {
+    public void onAttach(Context ctx) {
-        super.onAttach(activity);
+        super.onAttach(ctx);
         try {
-            listenerActivity = (OnAudioGenreSelectedListener) activity;
+            listenerActivity = (OnAudioGenreSelectedListener) ctx;
         } catch (ClassCastException e) {
-            throw new ClassCastException(activity.toString() + " must implement OnAudioGenreSelectedListener");
+            throw new ClassCastException(ctx.toString() + " must implement OnAudioGenreSelectedListener");
         }
         setSupportsSearch(true);
     }
@@ -119,10 +119,10 @@ public class AudioGenresListFragment extends AbstractCursorListFragment {
 
         String SORT = MediaContract.AudioGenres.TITLE + " COLLATE NOCASE ASC";
 
-        final int ID = 0;
+        int ID = 0;
-        final int GENREID = 1;
+        int GENREID = 1;
-        final int TITLE = 2;
+        int TITLE = 2;
-        final int THUMBNAIL = 3;
+        int THUMBNAIL = 3;
     }
 
     private class AudioGenresAdapter extends RecyclerViewCursorAdapter {
@@ -148,6 +148,8 @@ public class AudioGenresListFragment extends AbstractCursorListFragment {
 
             return new ViewHolder(view, getContext(), hostManager, artWidth, artHeight, genrelistItemMenuClickListener);
         }
+
+        protected int getSectionColumnIdx() { return AudioGenreListQuery.TITLE; }
     }
 
     /**

app/src/main/java/org/xbmc/kore/ui/sections/audio/MusicVideoListFragment.java

@@ -89,12 +89,12 @@ public class MusicVideoListFragment extends AbstractCursorListFragment {
     }
 
     @Override
-    public void onAttach(Activity activity) {
+    public void onAttach(Context ctx) {
-        super.onAttach(activity);
+        super.onAttach(ctx);
         try {
-            listenerActivity = (OnMusicVideoSelectedListener) activity;
+            listenerActivity = (OnMusicVideoSelectedListener) ctx;
         } catch (ClassCastException e) {
-            throw new ClassCastException(activity.toString() + " must implement OnMusicVideoSelectedListener");
+            throw new ClassCastException(ctx.toString() + " must implement OnMusicVideoSelectedListener");
         }
         setSupportsSearch(true);
     }
@@ -159,6 +159,7 @@ public class MusicVideoListFragment extends AbstractCursorListFragment {
                                       .inflate(R.layout.grid_item_music_video, parent, false);
             return new ViewHolder(view, context, hostManager, artWidth, artHeight);
         }
+        protected int getSectionColumnIdx() { return MusicVideosListQuery.TITLE; }
     }
 
     /**

app/src/main/java/org/xbmc/kore/ui/sections/audio/SongsListFragment.java

@@ -153,9 +153,9 @@ public class SongsListFragment extends AbstractCursorListFragment {
     }
 
     @Override
-    public void onAttach(Activity activity) {
+    public void onAttach(Context context) {
         setSupportsSearch(true);
-        super.onAttach(activity);
+        super.onAttach(context);
     }
 
     @Override
@@ -272,6 +272,8 @@ public class SongsListFragment extends AbstractCursorListFragment {
             return new SongViewHolder(view, context, hostManager, artWidth, artHeight,
                                       contextMenuClickListener);
         }
+
+        protected int getSectionColumnIdx() { return SongsListQuery.TITLE; }
     }
 
     private static class AlbumSongsAdapter extends RecyclerViewCursorAdapter {
@@ -290,6 +292,8 @@ public class SongsListFragment extends AbstractCursorListFragment {
 
             return new AlbumViewHolder(view, contextMenuClickListener);
         }
+
+        protected int getSectionColumnIdx() { return AlbumSongsListQuery.TITLE; }
     }
 
     /**

app/src/main/java/org/xbmc/kore/ui/sections/video/MovieListFragment.java

@@ -45,6 +45,7 @@ import org.xbmc.kore.service.library.LibrarySyncService;
 import org.xbmc.kore.ui.AbstractCursorListFragment;
 import org.xbmc.kore.ui.AbstractFragment;
 import org.xbmc.kore.ui.RecyclerViewCursorAdapter;
+import org.xbmc.kore.ui.sections.audio.SongsListFragment;
 import org.xbmc.kore.utils.LogUtils;
 import org.xbmc.kore.utils.UIUtils;
 import org.xbmc.kore.utils.Utils;
@@ -129,12 +130,12 @@ public class MovieListFragment extends AbstractCursorListFragment {
     }
 
     @Override
-    public void onAttach(Activity activity) {
+    public void onAttach(Context ctx) {
-        super.onAttach(activity);
+        super.onAttach(ctx);
         try {
-            listenerActivity = (OnMovieSelectedListener) activity;
+            listenerActivity = (OnMovieSelectedListener) ctx;
         } catch (ClassCastException e) {
-            throw new ClassCastException(activity.toString() + " must implement OnMovieSelectedListener");
+            throw new ClassCastException(ctx.toString() + " must implement OnMovieSelectedListener");
         }
         setSupportsSearch(true);
     }
@@ -344,6 +345,8 @@ public class MovieListFragment extends AbstractCursorListFragment {
 
             return new ViewHolder(view, getContext(), themeAccentColor, hostManager, artWidth, artHeight);
         }
+
+        protected int getSectionColumnIdx() { return MovieListQuery.TITLE; }
     }
 
     /**

app/src/main/java/org/xbmc/kore/ui/sections/video/TVShowEpisodeListFragment.java

@@ -47,6 +47,7 @@ import org.xbmc.kore.service.library.LibrarySyncService;
 import org.xbmc.kore.ui.AbstractCursorListFragment;
 import org.xbmc.kore.ui.AbstractFragment;
 import org.xbmc.kore.ui.RecyclerViewCursorAdapter;
+import org.xbmc.kore.ui.sections.audio.SongsListFragment;
 import org.xbmc.kore.utils.LogUtils;
 import org.xbmc.kore.utils.MediaPlayerUtils;
 import org.xbmc.kore.utils.UIUtils;
@@ -250,6 +251,8 @@ public class TVShowEpisodeListFragment extends AbstractCursorListFragment {
                                   contextlistItemMenuClickListener, hostManager,
                                   artWidth, artHeight);
         }
+
+        protected int getSectionColumnIdx() { return EpisodesListQuery.TITLE; }
     }
 
     /**

app/src/main/java/org/xbmc/kore/ui/sections/video/TVShowListFragment.java

@@ -47,6 +47,7 @@ import org.xbmc.kore.service.library.LibrarySyncService;
 import org.xbmc.kore.ui.AbstractCursorListFragment;
 import org.xbmc.kore.ui.AbstractInfoFragment;
 import org.xbmc.kore.ui.RecyclerViewCursorAdapter;
+import org.xbmc.kore.ui.sections.audio.SongsListFragment;
 import org.xbmc.kore.utils.LogUtils;
 import org.xbmc.kore.utils.UIUtils;
 import org.xbmc.kore.utils.Utils;
@@ -133,12 +134,12 @@ public class TVShowListFragment extends AbstractCursorListFragment {
     }
 
     @Override
-    public void onAttach(Activity activity) {
+    public void onAttach(Context ctx) {
-        super.onAttach(activity);
+        super.onAttach(ctx);
         try {
-            listenerActivity = (OnTVShowSelectedListener) activity;
+            listenerActivity = (OnTVShowSelectedListener) ctx;
         } catch (ClassCastException e) {
-            throw new ClassCastException(activity.toString() + " must implement OnTVShowSelectedListener");
+            throw new ClassCastException(ctx.toString() + " must implement OnTVShowSelectedListener");
         }
         setSupportsSearch(true);
     }
@@ -354,6 +355,8 @@ public class TVShowListFragment extends AbstractCursorListFragment {
 
             return viewHolder;
         }
+
+        protected int getSectionColumnIdx() { return TVShowListQuery.TITLE; }
     }
 
     /**

app/src/main/java/org/xbmc/kore/ui/viewgroups/RecyclerViewEmptyViewSupport.java

@@ -26,6 +26,8 @@ import android.support.v7.widget.RecyclerView;
 import android.util.AttributeSet;
 import android.view.View;
 
+import com.simplecityapps.recyclerview_fastscroll.views.FastScrollRecyclerView;
+
 /**
  * <p>A Recycler view using a grid layout that supports auto sizing and showing an empty view when the adapter
  * has no items.
@@ -40,7 +42,7 @@ import android.view.View;
  *
  * Inspired by <a href="http://blog.sqisland.com/2014/12/recyclerview-autofit-grid.html">RecyclerView: Autofit grid</a>
  */
-public class RecyclerViewEmptyViewSupport extends RecyclerView {
+public class RecyclerViewEmptyViewSupport extends FastScrollRecyclerView {
 
     public final static int AUTO_FIT = -1;
 

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

@@ -15,8 +15,7 @@
    limitations under the License.
 -->
 
-<FrameLayout
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 

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

@@ -44,6 +44,7 @@
     <attr name="colorFinished" format="reference|color" />
 
     <attr name="separatorColor" format="reference|color" />
+    <attr name="fastscrollHandleColor" format="reference|color" />
 
     <attr name="drawerBackgroundColor" format="reference|color" />
 

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

@@ -63,6 +63,9 @@
     <color name="dark_separator">#ff505050</color>
     <color name="light_separator">#ffafafaf</color>
 
+    <color name="dark_fastscroll_handle">#ff505050</color>
+    <color name="light_fastscroll_handle">#ff606060</color>
+
     <!-- Drawer colors -->
 	<color name="dark_drawer_background">@color/dark_content_background</color>
     <color name="light_drawer_background">@color/light_content_background</color>

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

@@ -35,7 +35,7 @@
     <dimen name="small_icon_size">24dp</dimen>
     <dimen name="medium_icon_size">32dp</dimen>
 
-    <dimen name="card_corner_radius">2dp</dimen>
+    <dimen name="card_corner_radius">4dp</dimen>
     <dimen name="default_card_elevation">2dp</dimen>
     <dimen name="default_card_margin">2dp</dimen>
 
@@ -43,7 +43,10 @@
     <dimen name="text_size_medium">14sp</dimen>
     <dimen name="text_size_large">16sp</dimen>
     <dimen name="text_size_xlarge">20sp</dimen>
-    <dimen name="text_size_xxlarge">34sp</dimen>
+    <dimen name="text_size_xxlarge">32sp</dimen>
+
+    <dimen name="fastscroll_popup_size">80dp</dimen>
+    <dimen name="fastscroll_text_size">36sp</dimen>
 
     <dimen name="default_list_item_height">56dp</dimen>
 

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

@@ -55,14 +55,22 @@
     </style>
 
     <style name="GridLayoutRecyclerView">
+        <item name="fastScrollPopupBgColor">?attr/colorPrimary</item>
+        <item name="fastScrollPopupTextColor">?attr/textColorOverPrimary</item>
+        <item name="fastScrollPopupTextSize">@dimen/fastscroll_text_size</item>
+        <item name="fastScrollPopupBackgroundSize">@dimen/fastscroll_popup_size</item>
+        <item name="fastScrollThumbColor">?attr/colorPrimary</item>
+        <item name="fastScrollThumbInactiveColor">?attr/fastscrollHandleColor</item>
+        <item name="fastScrollPopupPosition">adjacent</item>
+
         <item name="android:clipToPadding">false</item>
-         <item name="android:scrollbars">vertical</item>
         <item name="android:paddingBottom">@dimen/default_padding</item>
         <item name="android:paddingLeft">@dimen/default_card_margin</item>
         <item name="android:columnWidth">@dimen/default_grid_column_width</item>
     </style>
 
     <style name="Widget.CardView">
+        <item name="cardCornerRadius">@dimen/card_corner_radius</item>
         <item name="cardElevation">@dimen/default_card_elevation</item>
         <item name="cardBackgroundColor">?attr/appCardBackgroundColor</item>
         <item name="android:layout_marginRight">@dimen/default_card_margin</item>

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

@@ -86,6 +86,7 @@
 		<item name="drawerBackgroundColor">@color/dark_drawer_background</item>
 
         <item name="separatorColor">@color/dark_separator</item>
+        <item name="fastscrollHandleColor">@color/dark_fastscroll_handle</item>
 
         <item name="remoteButtonColorFilter">@color/white</item>
         <item name="defaultButtonColorFilter">@color/white</item>
@@ -225,6 +226,7 @@
         <item name="drawerBackgroundColor">@color/light_drawer_background</item>
 
         <item name="separatorColor">@color/light_separator</item>
+        <item name="fastscrollHandleColor">@color/light_fastscroll_handle</item>
 
         <item name="remoteButtonColorFilter">@color/black_dim_54pct</item>
         <item name="defaultButtonColorFilter">@color/black_dim_54pct</item>