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package de.danoeh.antennapod.fragment;
import android.app.Dialog;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatDialogFragment;
import androidx.recyclerview.widget.DividerItemDecoration;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import de.danoeh.antennapod.playback.base.PlayerStatus;
import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.adapter.ChaptersListAdapter;
import de.danoeh.antennapod.event.playback.PlaybackPositionEvent;
import de.danoeh.antennapod.core.util.ChapterUtils;
import de.danoeh.antennapod.core.util.playback.PlaybackController;
import de.danoeh.antennapod.model.feed.Chapter;
import de.danoeh.antennapod.model.playback.Playable;
import io.reactivex.Maybe;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.Disposable;
import io.reactivex.schedulers.Schedulers;
public class ChaptersFragment extends AppCompatDialogFragment {
public static final String TAG = "ChaptersFragment";
private ChaptersListAdapter adapter;
private PlaybackController controller;
private Disposable disposable;
private int focusedChapter = -1;
private Playable media;
private LinearLayoutManager layoutManager;
private ProgressBar progressBar;
@NonNull
@Override
public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
return new AlertDialog.Builder(requireContext())
.setTitle(getString(R.string.chapters_label))
.setView(onCreateView(getLayoutInflater()))
.setNegativeButton(getString(R.string.cancel_label), null) //dismisses
.create();
}
public View onCreateView(@NonNull LayoutInflater inflater) {
View root = inflater.inflate(R.layout.simple_list_fragment, null, false);
root.findViewById(R.id.toolbar).setVisibility(View.GONE);
RecyclerView recyclerView = root.findViewById(R.id.recyclerView);
progressBar = root.findViewById(R.id.progLoading);
layoutManager = new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(layoutManager);
recyclerView.addItemDecoration(new DividerItemDecoration(recyclerView.getContext(),
layoutManager.getOrientation()));
adapter = new ChaptersListAdapter(getActivity(), pos -> {
if (controller.getStatus() != PlayerStatus.PLAYING) {
controller.playPause();
}
Chapter chapter = adapter.getItem(pos);
controller.seekTo((int) chapter.getStart());
updateChapterSelection(pos);
});
recyclerView.setAdapter(adapter);
progressBar.setVisibility(View.VISIBLE);
RelativeLayout.LayoutParams wrapHeight = new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
recyclerView.setLayoutParams(wrapHeight);
return root;
}
@Override
public void onStart() {
super.onStart();
controller = new PlaybackController(getActivity()) {
@Override
public void loadMediaInfo() {
ChaptersFragment.this.loadMediaInfo();
}
@Override
public void onPositionObserverUpdate() {
adapter.notifyDataSetChanged();
}
};
controller.init();
EventBus.getDefault().register(this);
loadMediaInfo();
}
@Override
public void onStop() {
super.onStop();
if (disposable != null) {
disposable.dispose();
}
controller.release();
controller = null;
EventBus.getDefault().unregister(this);
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onEventMainThread(PlaybackPositionEvent event) {
updateChapterSelection(getCurrentChapter(media));
adapter.notifyTimeChanged(event.getPosition());
}
private int getCurrentChapter(Playable media) {
if (controller == null) {
return -1;
}
return ChapterUtils.getCurrentChapterIndex(media, controller.getPosition());
}
private void loadMediaInfo() {
if (disposable != null) {
disposable.dispose();
}
disposable = Maybe.create(emitter -> {
Playable media = controller.getMedia();
if (media != null) {
ChapterUtils.loadChapters(media, getContext());
emitter.onSuccess(media);
} else {
emitter.onComplete();
}
})
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(media -> onMediaChanged((Playable) media),
error -> Log.e(TAG, Log.getStackTraceString(error)));
}
private void onMediaChanged(Playable media) {
this.media = media;
focusedChapter = -1;
if (adapter == null) {
return;
}
if (media.getChapters() != null && media.getChapters().size() <= 0) {
dismiss();
} else {
progressBar.setVisibility(View.GONE);
}
adapter.setMedia(media);
int positionOfCurrentChapter = getCurrentChapter(media);
updateChapterSelection(positionOfCurrentChapter);
}
private void updateChapterSelection(int position) {
if (adapter == null) {
return;
}
if (position != -1 && focusedChapter != position) {
focusedChapter = position;
adapter.notifyChapterChanged(focusedChapter);
if (layoutManager.findFirstCompletelyVisibleItemPosition() >= position
|| layoutManager.findLastCompletelyVisibleItemPosition() <= position) {
layoutManager.scrollToPositionWithOffset(position, 100);
}
}
}
}
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