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package de.danoeh.antennapod.fragment;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.support.v4.view.MenuItemCompat;
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.adapter.DownloadLogAdapter;
import de.danoeh.antennapod.core.feed.EventDistributor;
import de.danoeh.antennapod.core.service.download.DownloadStatus;
import de.danoeh.antennapod.core.storage.DBReader;
import de.danoeh.antennapod.core.storage.DBWriter;
import de.danoeh.antennapod.menuhandler.MenuItemUtils;
import de.danoeh.antennapod.menuhandler.NavDrawerActivity;
/**
* Shows the download log
*/
public class DownloadLogFragment extends ListFragment {
private static final String TAG = "DownloadLogFragment";
private List<DownloadStatus> downloadLog;
private DownloadLogAdapter adapter;
private boolean viewsCreated = false;
private boolean itemsLoaded = false;
@Override
public void onStart() {
super.onStart();
setHasOptionsMenu(true);
EventDistributor.getInstance().register(contentUpdate);
startItemLoader();
}
@Override
public void onStop() {
super.onStop();
EventDistributor.getInstance().unregister(contentUpdate);
stopItemLoader();
}
@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);
viewsCreated = true;
if (itemsLoaded) {
onFragmentLoaded();
}
}
private void onFragmentLoaded() {
if (adapter == null) {
adapter = new DownloadLogAdapter(getActivity(), itemAccess);
setListAdapter(adapter);
}
setListShown(true);
adapter.notifyDataSetChanged();
getActivity().supportInvalidateOptionsMenu();
}
private DownloadLogAdapter.ItemAccess itemAccess = new DownloadLogAdapter.ItemAccess() {
@Override
public int getCount() {
return (downloadLog != null) ? downloadLog.size() : 0;
}
@Override
public DownloadStatus getItem(int position) {
return (downloadLog != null) ? downloadLog.get(position) : null;
}
};
private EventDistributor.EventListener contentUpdate = new EventDistributor.EventListener() {
@Override
public void update(EventDistributor eventDistributor, Integer arg) {
if ((arg & EventDistributor.DOWNLOADLOG_UPDATE) != 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);
}
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
if (itemsLoaded && !MenuItemUtils.isActivityDrawerOpen((NavDrawerActivity) getActivity())) {
MenuItem clearHistory = menu.add(Menu.NONE, R.id.clear_history_item, Menu.CATEGORY_CONTAINER, R.string.clear_history_label);
MenuItemCompat.setShowAsAction(clearHistory, MenuItemCompat.SHOW_AS_ACTION_IF_ROOM);
TypedArray drawables = getActivity().obtainStyledAttributes(new int[]{R.attr.content_discard});
clearHistory.setIcon(drawables.getDrawable(0));
drawables.recycle();
}
}
@Override
public void onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
if (itemsLoaded && !MenuItemUtils.isActivityDrawerOpen((NavDrawerActivity) getActivity())) {
menu.findItem(R.id.clear_history_item).setVisible(downloadLog != null && !downloadLog.isEmpty());
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (!super.onOptionsItemSelected(item)) {
switch (item.getItemId()) {
case R.id.clear_history_item:
DBWriter.clearDownloadLog(getActivity());
return true;
default:
return false;
}
} else {
return true;
}
}
private class ItemLoader extends AsyncTask<Void, Void, List<DownloadStatus>> {
@Override
protected void onPostExecute(List<DownloadStatus> downloadStatuses) {
super.onPostExecute(downloadStatuses);
if (downloadStatuses != null) {
downloadLog = downloadStatuses;
itemsLoaded = true;
if (viewsCreated) {
onFragmentLoaded();
}
}
}
@Override
protected List<DownloadStatus> doInBackground(Void... params) {
Context context = getActivity();
if (context != null) {
return DBReader.getDownloadLog(context);
}
return null;
}
}
}
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