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package de.danoeh.antennapod.fragment;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ListView;
import java.util.List;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.activity.MainActivity;
import de.danoeh.antennapod.adapter.DownloadedEpisodesListAdapter;
import de.danoeh.antennapod.core.feed.EventDistributor;
import de.danoeh.antennapod.core.feed.FeedItem;
import de.danoeh.antennapod.core.storage.DBReader;
import de.danoeh.antennapod.core.storage.DBWriter;
import de.danoeh.antennapod.core.util.FeedItemUtil;
import de.danoeh.antennapod.dialog.EpisodesApplyActionFragment;
import de.danoeh.antennapod.view.EmptyViewHandler;
import io.reactivex.Observable;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.Disposable;
import io.reactivex.schedulers.Schedulers;
/**
* Displays all running downloads and provides a button to delete them
*/
public class CompletedDownloadsFragment extends ListFragment {
private static final String TAG = CompletedDownloadsFragment.class.getSimpleName();
private static final int EVENTS = EventDistributor.DOWNLOAD_HANDLED |
EventDistributor.DOWNLOADLOG_UPDATE |
EventDistributor.UNREAD_ITEMS_UPDATE;
private List<FeedItem> items;
private DownloadedEpisodesListAdapter listAdapter;
private boolean viewCreated = false;
private Disposable disposable;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
loadItems();
}
@Override
public void onStart() {
super.onStart();
EventDistributor.getInstance().register(contentUpdate);
}
@Override
public void onStop() {
super.onStop();
EventDistributor.getInstance().unregister(contentUpdate);
if (disposable != null) {
disposable.dispose();
}
}
@Override
public void onDetach() {
super.onDetach();
if (disposable != null) {
disposable.dispose();
}
}
@Override
public void onDestroyView() {
super.onDestroyView();
listAdapter = null;
viewCreated = false;
if (disposable != null) {
disposable.dispose();
}
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
if (viewCreated && items != null) {
onFragmentLoaded();
}
}
@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);
viewCreated = true;
if (items != null && getActivity() != null) {
onFragmentLoaded();
}
EmptyViewHandler emptyView = new EmptyViewHandler(getActivity());
emptyView.setTitle(R.string.no_comp_downloads_head_label);
emptyView.setMessage(R.string.no_comp_downloads_label);
emptyView.attachToListView(getListView());
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
position -= l.getHeaderViewsCount();
long[] ids = FeedItemUtil.getIds(items);
((MainActivity) getActivity()).loadChildFragment(ItemFragment.newInstance(ids, position));
}
private void onFragmentLoaded() {
if (listAdapter == null) {
listAdapter = new DownloadedEpisodesListAdapter(getActivity(), itemAccess);
setListAdapter(listAdapter);
}
setListShown(true);
listAdapter.notifyDataSetChanged();
getActivity().supportInvalidateOptionsMenu();
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
if(!isAdded()) {
return;
}
super.onCreateOptionsMenu(menu, inflater);
if(items != null) {
inflater.inflate(R.menu.downloads_completed, menu);
menu.findItem(R.id.episode_actions).setVisible(items.size() > 0);
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.episode_actions:
EpisodesApplyActionFragment fragment = EpisodesApplyActionFragment
.newInstance(items, EpisodesApplyActionFragment.ACTION_DELETE | EpisodesApplyActionFragment.ACTION_ADD_TO_QUEUE);
((MainActivity) getActivity()).loadChildFragment(fragment);
return true;
default:
return false;
}
}
private final DownloadedEpisodesListAdapter.ItemAccess itemAccess = new DownloadedEpisodesListAdapter.ItemAccess() {
@Override
public int getCount() {
return (items != null) ? items.size() : 0;
}
@Override
public FeedItem getItem(int position) {
if (items != null && 0 <= position && position < items.size()) {
return items.get(position);
} else {
return null;
}
}
@Override
public void onFeedItemSecondaryAction(FeedItem item) {
DBWriter.deleteFeedMediaOfItem(getActivity(), item.getMedia().getId());
}
};
private final EventDistributor.EventListener contentUpdate = new EventDistributor.EventListener() {
@Override
public void update(EventDistributor eventDistributor, Integer arg) {
if ((arg & EVENTS) != 0) {
loadItems();
}
}
};
private void loadItems() {
if (disposable != null) {
disposable.dispose();
}
if (items == null && viewCreated) {
setListShown(false);
}
disposable = Observable.fromCallable(DBReader::getDownloadedItems)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(result -> {
items = result;
if (viewCreated && getActivity() != null) {
onFragmentLoaded();
}
}, error -> Log.e(TAG, Log.getStackTraceString(error)));
}
}
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