Android TV support

app/src/main/AndroidManifest.xml

@@ -11,7 +11,10 @@
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
 
+    <uses-feature android:name="android.hardware.touchscreen" android:required="false"/>
+
     <application
+        android:banner="@mipmap/newpipe_tv_banner"
         android:name=".App"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -26,6 +29,7 @@
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
+                <category android:name="android.intent.category.LEANBACK_LAUNCHER"/>
             </intent-filter>
         </activity>
 

app/src/main/java/com/google/android/material/appbar/FlingBehavior.java

@@ -1,22 +1,58 @@
 package com.google.android.material.appbar;
 
 import android.content.Context;
+import android.graphics.Rect;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.widget.OverScroller;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.coordinatorlayout.widget.CoordinatorLayout;
 
 import java.lang.reflect.Field;
 
 // See https://stackoverflow.com/questions/56849221#57997489
 public final class FlingBehavior extends AppBarLayout.Behavior {
+    private final Rect focusScrollRect = new Rect();
+
     public FlingBehavior(final Context context, final AttributeSet attrs) {
         super(context, attrs);
     }
 
     @Override
+    public boolean onRequestChildRectangleOnScreen(
+            @NonNull final CoordinatorLayout coordinatorLayout, @NonNull final AppBarLayout child,
+            @NonNull final Rect rectangle, final boolean immediate) {
+
+        focusScrollRect.set(rectangle);
+
+        coordinatorLayout.offsetDescendantRectToMyCoords(child, focusScrollRect);
+
+        int height = coordinatorLayout.getHeight();
+
+        if (focusScrollRect.top <= 0 && focusScrollRect.bottom >= height) {
+            // the child is too big to fit inside ourselves completely, ignore request
+            return false;
+        }
+
+        int dy;
+
+        if (focusScrollRect.bottom > height) {
+            dy =  focusScrollRect.top;
+        } else if (focusScrollRect.top < 0) {
+            // scrolling up
+            dy = -(height - focusScrollRect.bottom);
+        } else {
+            // nothing to do
+            return false;
+        }
+
+        int consumed = scroll(coordinatorLayout, child, dy, getMaxDragOffset(child), 0);
+
+        return consumed == dy;
+    }
+
     public boolean onInterceptTouchEvent(final CoordinatorLayout parent, final AppBarLayout child,
                                          final MotionEvent ev) {
         switch (ev.getActionMasked()) {

app/src/main/java/org/schabi/newpipe/MainActivity.java

@@ -65,6 +65,7 @@
 import org.schabi.newpipe.fragments.list.search.SearchFragment;
 import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.util.Constants;
+import org.schabi.newpipe.util.AndroidTvUtils;
 import org.schabi.newpipe.util.KioskTranslator;
 import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.NavigationHelper;
@@ -74,6 +75,7 @@
 import org.schabi.newpipe.util.StateSaver;
 import org.schabi.newpipe.util.TLSSocketFactoryCompat;
 import org.schabi.newpipe.util.ThemeHelper;
+import org.schabi.newpipe.views.FocusOverlayView;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -142,6 +144,10 @@ && getSupportFragmentManager().getBackStackEntryCount() == 0) {
         } catch (Exception e) {
             ErrorActivity.reportUiError(this, e);
         }
+
+        if (AndroidTvUtils.isTv()) {
+            FocusOverlayView.setupFocusObserver(this);
+        }
     }
 
     private void setupDrawer() throws Exception {
@@ -526,6 +532,14 @@ public void onBackPressed() {
             Log.d(TAG, "onBackPressed() called");
         }
 
+        if (AndroidTvUtils.isTv()) {
+            View drawerPanel = findViewById(R.id.navigation);
+            if (drawer.isDrawerOpen(drawerPanel)) {
+                drawer.closeDrawers();
+                return;
+            }
+        }
+
         Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.fragment_holder);
         // If current fragment implements BackPressable (i.e. can/wanna handle back press)
         // delegate the back press to it

app/src/main/java/org/schabi/newpipe/RouterActivity.java

@@ -45,10 +45,12 @@
 import org.schabi.newpipe.report.UserAction;
 import org.schabi.newpipe.util.Constants;
 import org.schabi.newpipe.util.ExtractorHelper;
+import org.schabi.newpipe.util.AndroidTvUtils;
 import org.schabi.newpipe.util.ListHelper;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.PermissionHelper;
 import org.schabi.newpipe.util.ThemeHelper;
+import org.schabi.newpipe.views.FocusOverlayView;
 import org.schabi.newpipe.util.urlfinder.UrlFinder;
 
 import java.io.Serializable;
@@ -341,6 +343,10 @@ private void showDialog(final List<AdapterChoiceItem> choices) {
         selectedPreviously = selectedRadioPosition;
 
         alertDialog.show();
+
+        if (AndroidTvUtils.isTv()) {
+            FocusOverlayView.setupFocusObserver(alertDialog);
+        }
     }
 
     private List<AdapterChoiceItem> getChoicesForService(final StreamingService service,

app/src/main/java/org/schabi/newpipe/download/DownloadActivity.java

@@ -13,7 +13,9 @@
 import androidx.appcompat.widget.Toolbar;
 
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.util.AndroidTvUtils;
 import org.schabi.newpipe.util.ThemeHelper;
+import org.schabi.newpipe.views.FocusOverlayView;
 
 import us.shandian.giga.service.DownloadManagerService;
 import us.shandian.giga.ui.fragment.MissionsFragment;
@@ -54,6 +56,10 @@ public void onGlobalLayout() {
                 getWindow().getDecorView().getViewTreeObserver().removeOnGlobalLayoutListener(this);
             }
         });
+
+        if (AndroidTvUtils.isTv()) {
+            FocusOverlayView.setupFocusObserver(this);
+        }
     }
 
     private void updateFragments() {

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -11,7 +11,6 @@
 import android.text.Html;
 import android.text.Spanned;
 import android.text.TextUtils;
-import android.text.method.LinkMovementMethod;
 import android.text.util.Linkify;
 import android.util.DisplayMetrics;
 import android.util.Log;
@@ -86,6 +85,7 @@
 import org.schabi.newpipe.util.StreamItemAdapter;
 import org.schabi.newpipe.util.StreamItemAdapter.StreamSizeWrapper;
 import org.schabi.newpipe.views.AnimatedProgressBar;
+import org.schabi.newpipe.views.LargeTextMovementMethod;
 
 import java.io.Serializable;
 import java.util.Collection;
@@ -470,10 +470,13 @@ private void toggleTitleAndDescription() {
         if (videoDescriptionRootLayout.getVisibility() == View.VISIBLE) {
             videoTitleTextView.setMaxLines(1);
             videoDescriptionRootLayout.setVisibility(View.GONE);
+            videoDescriptionView.setFocusable(false);
             videoTitleToggleArrow.setImageResource(R.drawable.arrow_down);
         } else {
             videoTitleTextView.setMaxLines(10);
             videoDescriptionRootLayout.setVisibility(View.VISIBLE);
+            videoDescriptionView.setFocusable(true);
+            videoDescriptionView.setMovementMethod(new LargeTextMovementMethod());
             videoTitleToggleArrow.setImageResource(R.drawable.arrow_up);
         }
     }
@@ -510,7 +513,6 @@ protected void initViews(final View rootView, final Bundle savedInstanceState) {
         videoDescriptionRootLayout = rootView.findViewById(R.id.detail_description_root_layout);
         videoUploadDateView = rootView.findViewById(R.id.detail_upload_date_view);
         videoDescriptionView = rootView.findViewById(R.id.detail_description_view);
-        videoDescriptionView.setMovementMethod(LinkMovementMethod.getInstance());
 
         thumbsUpTextView = rootView.findViewById(R.id.detail_thumbs_up_count_view);
         thumbsUpImageView = rootView.findViewById(R.id.detail_thumbs_up_img_view);
@@ -532,6 +534,8 @@ protected void initViews(final View rootView, final Bundle savedInstanceState) {
         relatedStreamsLayout = rootView.findViewById(R.id.relatedStreamsLayout);
 
         setHeightThumbnail();
+
+        thumbnailBackgroundButton.requestFocus();
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/fragments/list/BaseListFragment.java

@@ -16,7 +16,6 @@
 import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.recyclerview.widget.GridLayoutManager;
-import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
 import org.schabi.newpipe.R;
@@ -35,6 +34,7 @@
 import org.schabi.newpipe.util.OnClickGesture;
 import org.schabi.newpipe.util.StateSaver;
 import org.schabi.newpipe.util.StreamDialogEntry;
+import org.schabi.newpipe.views.SuperScrollLayoutManager;
 
 import java.util.List;
 import java.util.Queue;
@@ -56,6 +56,7 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I>
 
     protected InfoListAdapter infoListAdapter;
     protected RecyclerView itemsList;
+    private int focusedPosition = -1;
 
     /*//////////////////////////////////////////////////////////////////////////
     // LifeCycle
@@ -129,20 +130,53 @@ public String generateSuffix() {
         return "." + infoListAdapter.getItemsList().size() + ".list";
     }
 
+    private int getFocusedPosition() {
+        View focusedItem = itemsList.getFocusedChild();
+        if (focusedItem != null) {
+            RecyclerView.ViewHolder itemHolder = itemsList.findContainingViewHolder(focusedItem);
+            if (itemHolder != null) {
+                return itemHolder.getAdapterPosition();
+            }
+        }
+
+        return -1;
+    }
+
     @Override
     public void writeTo(final Queue<Object> objectsToSave) {
-        if (useDefaultStateSaving) {
-            objectsToSave.add(infoListAdapter.getItemsList());
+        if (!useDefaultStateSaving) {
+            return;
         }
+
+        objectsToSave.add(infoListAdapter.getItemsList());
+        objectsToSave.add(getFocusedPosition());
     }
 
     @Override
     @SuppressWarnings("unchecked")
     public void readFrom(@NonNull final Queue<Object> savedObjects) throws Exception {
-        if (useDefaultStateSaving) {
-            infoListAdapter.getItemsList().clear();
-            infoListAdapter.getItemsList().addAll((List<InfoItem>) savedObjects.poll());
+        if (!useDefaultStateSaving) {
+            return;
+        }
+
+        infoListAdapter.getItemsList().clear();
+        infoListAdapter.getItemsList().addAll((List<InfoItem>) savedObjects.poll());
+        restoreFocus((Integer) savedObjects.poll());
+    }
+
+    private void restoreFocus(final Integer position) {
+        if (position == null || position < 0) {
+            return;
         }
+
+        itemsList.post(() -> {
+            RecyclerView.ViewHolder focusedHolder =
+                    itemsList.findViewHolderForAdapterPosition(position);
+
+            if (focusedHolder != null) {
+                focusedHolder.itemView.requestFocus();
+            }
+        });
     }
 
     @Override
@@ -162,6 +196,18 @@ protected void onRestoreInstanceState(@NonNull final Bundle bundle) {
         }
     }
 
+    @Override
+    public void onStop() {
+        focusedPosition = getFocusedPosition();
+        super.onStop();
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        restoreFocus(focusedPosition);
+    }
+
     /*//////////////////////////////////////////////////////////////////////////
     // Init
     //////////////////////////////////////////////////////////////////////////*/
@@ -175,7 +221,7 @@ protected View getListFooter() {
     }
 
     protected RecyclerView.LayoutManager getListLayoutManager() {
-        return new LinearLayoutManager(activity);
+        return new SuperScrollLayoutManager(activity);
     }
 
     protected RecyclerView.LayoutManager getGridLayoutManager() {

app/src/main/java/org/schabi/newpipe/fragments/list/BaseListInfoFragment.java

@@ -10,6 +10,7 @@
 import org.schabi.newpipe.extractor.ListExtractor;
 import org.schabi.newpipe.extractor.ListInfo;
 import org.schabi.newpipe.util.Constants;
+import org.schabi.newpipe.views.NewPipeRecyclerView;
 
 import java.util.Queue;
 
@@ -149,9 +150,13 @@ protected void loadMoreItems() {
         if (currentWorker != null) {
             currentWorker.dispose();
         }
+
+        forbidDownwardFocusScroll();
+
         currentWorker = loadMoreItemsLogic()
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
+                .doFinally(this::allowDownwardFocusScroll)
                 .subscribe((@io.reactivex.annotations.NonNull
                                     ListExtractor.InfoItemsPage InfoItemsPage) -> {
                     isLoading.set(false);
@@ -162,6 +167,18 @@ protected void loadMoreItems() {
                 });
     }
 
+    private void forbidDownwardFocusScroll() {
+        if (itemsList instanceof NewPipeRecyclerView) {
+            ((NewPipeRecyclerView) itemsList).setFocusScrollAllowed(false);
+        }
+    }
+
+    private void allowDownwardFocusScroll() {
+        if (itemsList instanceof NewPipeRecyclerView) {
+            ((NewPipeRecyclerView) itemsList).setFocusScrollAllowed(true);
+        }
+    }
+
     @Override
     public void handleNextItems(final ListExtractor.InfoItemsPage result) {
         super.handleNextItems(result);

app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchFragment.java

@@ -41,6 +41,7 @@
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
 import org.schabi.newpipe.extractor.search.SearchExtractor;
 import org.schabi.newpipe.extractor.search.SearchInfo;
+import org.schabi.newpipe.util.AndroidTvUtils;
 import org.schabi.newpipe.fragments.BackPressable;
 import org.schabi.newpipe.fragments.list.BaseListFragment;
 import org.schabi.newpipe.local.history.HistoryRecordManager;
@@ -49,7 +50,6 @@
 import org.schabi.newpipe.util.AnimationUtils;
 import org.schabi.newpipe.util.Constants;
 import org.schabi.newpipe.util.ExtractorHelper;
-import org.schabi.newpipe.util.FireTvUtils;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.ServiceHelper;
 
@@ -511,7 +511,7 @@ private void initSearchListeners() {
             if (isSuggestionsEnabled && errorPanelRoot.getVisibility() != View.VISIBLE) {
                 showSuggestionsPanel();
             }
-            if (FireTvUtils.isFireTv()) {
+            if (AndroidTvUtils.isTv()) {
                 showKeyboardSearch();
             }
         });