Copied SelectFeedGroupFragment from SelectChannelFragment

app/src/main/java/org/schabi/newpipe/settings/SelectFeedGroupFragment.java

@@ -0,0 +1,213 @@
+package org.schabi.newpipe.settings;
+
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.DialogFragment;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import org.schabi.newpipe.R;
+import org.schabi.newpipe.database.subscription.SubscriptionEntity;
+import org.schabi.newpipe.error.ErrorUtil;
+import org.schabi.newpipe.local.subscription.SubscriptionManager;
+import org.schabi.newpipe.util.ThemeHelper;
+import org.schabi.newpipe.util.image.PicassoHelper;
+
+import java.util.List;
+import java.util.Vector;
+
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers;
+import io.reactivex.rxjava3.core.Observer;
+import io.reactivex.rxjava3.disposables.Disposable;
+import io.reactivex.rxjava3.schedulers.Schedulers;
+
+/**
+ * Created by Christian Schabesberger on 26.09.17.
+ * SelectChannelFragment.java is part of NewPipe.
+ * <p>
+ * NewPipe is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * </p>
+ * <p>
+ * NewPipe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * </p>
+ * <p>
+ * You should have received a copy of the GNU General Public License
+ * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
+ * </p>
+ */
+
+public class SelectFeedGroupFragment extends DialogFragment {
+
+    private OnSelectedListener onSelectedListener = null;
+    private OnCancelListener onCancelListener = null;
+
+    private ProgressBar progressBar;
+    private TextView emptyView;
+    private RecyclerView recyclerView;
+
+    private List<SubscriptionEntity> subscriptions = new Vector<>();
+
+    public void setOnSelectedListener(final OnSelectedListener listener) {
+        onSelectedListener = listener;
+    }
+
+    public void setOnCancelListener(final OnCancelListener listener) {
+        onCancelListener = listener;
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Init
+    //////////////////////////////////////////////////////////////////////////*/
+
+    @Override
+    public void onCreate(@Nullable final Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setStyle(STYLE_NO_TITLE, ThemeHelper.getMinWidthDialogTheme(requireContext()));
+    }
+
+    @Override
+    public View onCreateView(@NonNull final LayoutInflater inflater, final ViewGroup container,
+                             final Bundle savedInstanceState) {
+        final View v = inflater.inflate(R.layout.select_channel_fragment, container, false);
+        recyclerView = v.findViewById(R.id.items_list);
+        recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
+        final SelectChannelAdapter channelAdapter = new SelectChannelAdapter();
+        recyclerView.setAdapter(channelAdapter);
+
+        progressBar = v.findViewById(R.id.progressBar);
+        emptyView = v.findViewById(R.id.empty_state_view);
+        progressBar.setVisibility(View.VISIBLE);
+        recyclerView.setVisibility(View.GONE);
+        emptyView.setVisibility(View.GONE);
+
+
+        final SubscriptionManager subscriptionManager = new SubscriptionManager(requireContext());
+        subscriptionManager.subscriptions().toObservable()
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(getSubscriptionObserver());
+
+        return v;
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Handle actions
+    //////////////////////////////////////////////////////////////////////////*/
+
+    @Override
+    public void onCancel(@NonNull final DialogInterface dialogInterface) {
+        super.onCancel(dialogInterface);
+        if (onCancelListener != null) {
+            onCancelListener.onCancel();
+        }
+    }
+
+    private void clickedItem(final int position) {
+        if (onSelectedListener != null) {
+            final SubscriptionEntity entry = subscriptions.get(position);
+            onSelectedListener
+                    .onChannelSelected(entry.getServiceId(), entry.getUrl(), entry.getName());
+        }
+        dismiss();
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Item handling
+    //////////////////////////////////////////////////////////////////////////*/
+
+    private void displayChannels(final List<SubscriptionEntity> newSubscriptions) {
+        this.subscriptions = newSubscriptions;
+        progressBar.setVisibility(View.GONE);
+        if (newSubscriptions.isEmpty()) {
+            emptyView.setVisibility(View.VISIBLE);
+            return;
+        }
+        recyclerView.setVisibility(View.VISIBLE);
+
+    }
+
+    private Observer<List<SubscriptionEntity>> getSubscriptionObserver() {
+        return new Observer<List<SubscriptionEntity>>() {
+            @Override
+            public void onSubscribe(@NonNull final Disposable disposable) { }
+
+            @Override
+            public void onNext(@NonNull final List<SubscriptionEntity> newSubscriptions) {
+                displayChannels(newSubscriptions);
+            }
+
+            @Override
+            public void onError(@NonNull final Throwable exception) {
+                ErrorUtil.showUiErrorSnackbar(SelectFeedGroupFragment.this,
+                        "Loading subscription", exception);
+            }
+
+            @Override
+            public void onComplete() { }
+        };
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Interfaces
+    //////////////////////////////////////////////////////////////////////////*/
+
+    public interface OnSelectedListener {
+        void onChannelSelected(int serviceId, String url, String name);
+    }
+
+    public interface OnCancelListener {
+        void onCancel();
+    }
+
+    private class SelectChannelAdapter
+            extends RecyclerView.Adapter<SelectChannelAdapter.SelectChannelItemHolder> {
+        @NonNull
+        @Override
+        public SelectChannelItemHolder onCreateViewHolder(final ViewGroup parent,
+                                                          final int viewType) {
+            final View item = LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.select_channel_item, parent, false);
+            return new SelectChannelItemHolder(item);
+        }
+
+        @Override
+        public void onBindViewHolder(final SelectChannelItemHolder holder, final int position) {
+            final SubscriptionEntity entry = subscriptions.get(position);
+            holder.titleView.setText(entry.getName());
+            holder.view.setOnClickListener(view -> clickedItem(position));
+            PicassoHelper.loadAvatar(entry.getAvatarUrl()).into(holder.thumbnailView);
+        }
+
+        @Override
+        public int getItemCount() {
+            return subscriptions.size();
+        }
+
+        public class SelectChannelItemHolder extends RecyclerView.ViewHolder {
+            public final View view;
+            final ImageView thumbnailView;
+            final TextView titleView;
+            SelectChannelItemHolder(final View v) {
+                super(v);
+                this.view = v;
+                thumbnailView = v.findViewById(R.id.itemThumbnailView);
+                titleView = v.findViewById(R.id.itemTitleView);
+            }
+        }
+    }
+}