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package de.danoeh.antennapod.fragment;
import android.app.Activity;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.view.View;
import android.widget.ListView;
import de.danoeh.antennapod.adapter.DownloadedEpisodesListAdapter;
import de.danoeh.antennapod.dialog.FeedItemDialog;
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.QueueAccess;
import java.util.List;
/**
* Displays all running downloads and provides a button to delete them
*/
public class CompletedDownloadsFragment extends ListFragment {
private static final int EVENTS =
EventDistributor.DOWNLOAD_HANDLED |
EventDistributor.DOWNLOADLOG_UPDATE |
EventDistributor.QUEUE_UPDATE |
EventDistributor.UNREAD_ITEMS_UPDATE;
private List<FeedItem> items;
private QueueAccess queue;
private DownloadedEpisodesListAdapter listAdapter;
private boolean viewCreated = false;
private boolean itemsLoaded = false;
private FeedItemDialog feedItemDialog;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
startItemLoader();
}
@Override
public void onStart() {
super.onStart();
EventDistributor.getInstance().register(contentUpdate);
}
@Override
public void onStop() {
super.onStop();
EventDistributor.getInstance().unregister(contentUpdate);
stopItemLoader();
}
@Override
public void onDetach() {
super.onDetach();
stopItemLoader();
}
@Override
public void onDestroyView() {
super.onDestroyView();
listAdapter = null;
viewCreated = false;
feedItemDialog = null;
stopItemLoader();
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
if (viewCreated && itemsLoaded) {
onFragmentLoaded();
}
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
viewCreated = true;
if (itemsLoaded && getActivity() != null) {
onFragmentLoaded();
}
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
FeedItem item = listAdapter.getItem(position - l.getHeaderViewsCount());
if (item != null) {
feedItemDialog = FeedItemDialog.newInstance(getActivity(), item, queue);
feedItemDialog.show();
}
}
private void onFragmentLoaded() {
if (listAdapter == null) {
listAdapter = new DownloadedEpisodesListAdapter(getActivity(), itemAccess);
setListAdapter(listAdapter);
}
setListShown(true);
listAdapter.notifyDataSetChanged();
if (feedItemDialog != null) {
boolean res = feedItemDialog.updateContent(queue, items);
if (!res && feedItemDialog.isShowing()) {
feedItemDialog.dismiss();
}
}
}
private DownloadedEpisodesListAdapter.ItemAccess itemAccess = new DownloadedEpisodesListAdapter.ItemAccess() {
@Override
public int getCount() {
return (items != null) ? items.size() : 0;
}
@Override
public FeedItem getItem(int position) {
return (items != null) ? items.get(position) : null;
}
@Override
public void onFeedItemSecondaryAction(FeedItem item) {
DBWriter.deleteFeedMediaOfItem(getActivity(), item.getMedia().getId());
}
};
private EventDistributor.EventListener contentUpdate = new EventDistributor.EventListener() {
@Override
public void update(EventDistributor eventDistributor, Integer arg) {
if ((arg & EventDistributor.DOWNLOAD_QUEUED) != 0) {
if (feedItemDialog != null && feedItemDialog.isShowing()) {
feedItemDialog.updateMenuAppearance();
}
} else if ((arg & EVENTS) != 0) {
startItemLoader();
}
}
};
private ItemLoader itemLoader;
private void startItemLoader() {
if (itemLoader != null) {
itemLoader.cancel(true);
}
itemLoader = new ItemLoader();
itemLoader.execute();
}
private void stopItemLoader() {
if (itemLoader != null) {
itemLoader.cancel(true);
}
}
private class ItemLoader extends AsyncTask<Void, Void, Object[]> {
@Override
protected void onPreExecute() {
super.onPreExecute();
if (!itemsLoaded && viewCreated) {
setListShown(false);
}
}
@Override
protected void onPostExecute(Object[] results) {
super.onPostExecute(results);
if (results != null) {
items = (List<FeedItem>) results[0];
queue = (QueueAccess) results[1];
itemsLoaded = true;
if (viewCreated && getActivity() != null) {
onFragmentLoaded();
}
}
}
@Override
protected Object[] doInBackground(Void... params) {
Context context = getActivity();
if (context != null) {
return new Object[]{DBReader.getDownloadedItems(context),
QueueAccess.IDListAccess(DBReader.getQueueIDList(context))};
}
return null;
}
}
}
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