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package de.danoeh.antennapod.fragment;
import android.os.Bundle;
import androidx.fragment.app.ListFragment;
import android.util.Log;
import android.view.View;
import android.widget.ListView;
import de.danoeh.antennapod.core.util.ChapterUtils;
import java.util.List;
import java.util.ListIterator;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.adapter.ChaptersListAdapter;
import de.danoeh.antennapod.adapter.QueueRecyclerAdapter;
import de.danoeh.antennapod.core.event.PlaybackPositionEvent;
import de.danoeh.antennapod.core.feed.Chapter;
import de.danoeh.antennapod.core.service.playback.PlayerStatus;
import de.danoeh.antennapod.core.util.playback.Playable;
import de.danoeh.antennapod.core.util.playback.PlaybackController;
import de.danoeh.antennapod.view.EmptyViewHandler;
import io.reactivex.Maybe;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.Disposable;
import io.reactivex.schedulers.Schedulers;
import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;
public class ChaptersFragment extends ListFragment {
private static final String TAG = "ChaptersFragment";
private ChaptersListAdapter adapter;
private PlaybackController controller;
private Disposable disposable;
private int focusedChapter = -1;
private Playable media;
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
// add padding
final ListView lv = getListView();
lv.setClipToPadding(false);
final int vertPadding = getResources().getDimensionPixelSize(R.dimen.list_vertical_padding);
lv.setPadding(0, vertPadding, 0, vertPadding);
EmptyViewHandler emptyView = new EmptyViewHandler(getContext());
emptyView.attachToListView(lv);
emptyView.setIcon(R.attr.ic_bookmark);
emptyView.setTitle(R.string.no_chapters_head_label);
emptyView.setMessage(R.string.no_chapters_label);
adapter = new ChaptersListAdapter(getActivity(), 0, pos -> {
if (controller.getStatus() != PlayerStatus.PLAYING) {
controller.playPause();
}
Chapter chapter = (Chapter) getListAdapter().getItem(pos);
controller.seekToChapter(chapter);
updateChapterSelection(pos);
});
setListAdapter(adapter);
}
@Override
public void onStart() {
super.onStart();
controller = new PlaybackController(getActivity(), false) {
@Override
public boolean loadMediaInfo() {
ChaptersFragment.this.loadMediaInfo();
return true;
}
@Override
public void onPositionObserverUpdate() {
adapter.notifyDataSetChanged();
}
};
controller.init();
EventBus.getDefault().register(this);
loadMediaInfo();
}
@Override
public void onDestroyView() {
super.onDestroyView();
if (disposable != null) {
disposable.dispose();
}
}
@Override
public void onStop() {
super.onStop();
controller.release();
controller = null;
EventBus.getDefault().unregister(this);
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onEventMainThread(PlaybackPositionEvent event) {
updateChapterSelection(getCurrentChapter(media));
}
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) {
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;
}
adapter.setMedia(media);
adapter.notifyDataSetChanged();
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 (getListView().getFirstVisiblePosition() >= position
|| getListView().getLastVisiblePosition() <= position) {
getListView().setSelectionFromTop(position, 100);
}
}
}
}
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