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package de.danoeh.antennapod.fragment;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.ProgressBar;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.SearchView;
import androidx.fragment.app.Fragment;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.activity.MainActivity;
import de.danoeh.antennapod.adapter.FeedItemlistAdapter;
import de.danoeh.antennapod.core.event.DownloadEvent;
import de.danoeh.antennapod.core.event.UnreadItemsUpdateEvent;
import de.danoeh.antennapod.core.feed.Feed;
import de.danoeh.antennapod.core.feed.FeedComponent;
import de.danoeh.antennapod.core.feed.FeedItem;
import de.danoeh.antennapod.core.storage.FeedSearcher;
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;
import java.util.ArrayList;
import java.util.List;
import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;
/**
* Performs a search operation on all feeds or one specific feed and displays the search result.
*/
public class SearchFragment extends Fragment implements AdapterView.OnItemClickListener {
private static final String TAG = "SearchFragment";
private static final String ARG_QUERY = "query";
private static final String ARG_FEED = "feed";
private FeedItemlistAdapter searchAdapter;
private List<FeedComponent> searchResults = new ArrayList<>();
private Disposable disposable;
private ProgressBar progressBar;
private EmptyViewHandler emptyViewHandler;
/**
* Create a new SearchFragment that searches all feeds.
*/
public static SearchFragment newInstance(String query) {
if (query == null) {
query = "";
}
SearchFragment fragment = new SearchFragment();
Bundle args = new Bundle();
args.putString(ARG_QUERY, query);
args.putLong(ARG_FEED, 0);
fragment.setArguments(args);
return fragment;
}
/**
* Create a new SearchFragment that searches one specific feed.
*/
public static SearchFragment newInstance(String query, long feed) {
SearchFragment fragment = newInstance(query);
fragment.getArguments().putLong(ARG_FEED, feed);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
setHasOptionsMenu(true);
}
@Override
public void onStart() {
super.onStart();
search();
}
@Override
public void onStop() {
super.onStop();
if (disposable != null) {
disposable.dispose();
}
}
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
View layout = inflater.inflate(R.layout.search_fragment, container, false);
((AppCompatActivity) getActivity()).setSupportActionBar(layout.findViewById(R.id.toolbar));
ListView listView = layout.findViewById(R.id.listview);
progressBar = layout.findViewById(R.id.progressBar);
searchAdapter = new FeedItemlistAdapter((MainActivity) getActivity(), itemAccess, true, true);
listView.setAdapter(searchAdapter);
listView.setOnItemClickListener(this);
emptyViewHandler = new EmptyViewHandler(getContext());
emptyViewHandler.attachToListView(listView);
emptyViewHandler.setIcon(R.attr.action_search);
emptyViewHandler.setTitle(R.string.search_status_no_results);
EventBus.getDefault().register(this);
return layout;
}
@Override
public void onDestroyView() {
super.onDestroyView();
EventBus.getDefault().unregister(this);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
FeedComponent comp = searchAdapter.getItem(position);
if (comp.getClass() == Feed.class) {
((MainActivity) getActivity()).loadFeedFragmentById(comp.getId(), null);
} else if (comp.getClass() == FeedItem.class) {
FeedItem item = (FeedItem) comp;
((MainActivity) getActivity()).loadChildFragment(ItemPagerFragment.newInstance(item.getId()));
}
}
@Override
public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.search, menu);
MenuItem item = menu.findItem(R.id.action_search);
item.expandActionView();
final SearchView sv = (SearchView) item.getActionView();
sv.setQueryHint(getString(R.string.search_label));
sv.clearFocus();
sv.setQuery(getArguments().getString(ARG_QUERY), false);
sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String s) {
sv.clearFocus();
getArguments().putString(ARG_QUERY, s);
search();
return true;
}
@Override
public boolean onQueryTextChange(String s) {
return false;
}
});
item.setOnActionExpandListener(new MenuItem.OnActionExpandListener() {
@Override
public boolean onMenuItemActionExpand(MenuItem item) {
return true;
}
@Override
public boolean onMenuItemActionCollapse(MenuItem item) {
getFragmentManager().popBackStack();
return true;
}
});
}
@Subscribe
public void onUnreadItemsChanged(UnreadItemsUpdateEvent event) {
search();
}
@Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
public void onEventMainThread(DownloadEvent event) {
Log.d(TAG, "onEventMainThread() called with: " + "event = [" + event + "]");
if (searchAdapter != null) {
searchAdapter.notifyDataSetChanged();
}
}
private void onSearchResults(List<FeedComponent> results) {
progressBar.setVisibility(View.GONE);
searchResults = results;
searchAdapter.notifyDataSetChanged();
String query = getArguments().getString(ARG_QUERY);
emptyViewHandler.setMessage(getString(R.string.no_results_for_query, query));
}
private final FeedItemlistAdapter.ItemAccess itemAccess = new FeedItemlistAdapter.ItemAccess() {
@Override
public int getCount() {
return searchResults.size();
}
@Override
public FeedComponent getItem(int position) {
if (0 <= position && position < searchResults.size()) {
return searchResults.get(position);
} else {
return null;
}
}
};
private void search() {
if (disposable != null) {
disposable.dispose();
}
progressBar.setVisibility(View.VISIBLE);
emptyViewHandler.hide();
disposable = Observable.fromCallable(this::performSearch)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(this::onSearchResults, error -> Log.e(TAG, Log.getStackTraceString(error)));
}
@NonNull
private List<FeedComponent> performSearch() {
Bundle args = getArguments();
String query = args.getString(ARG_QUERY);
long feed = args.getLong(ARG_FEED);
Context context = getActivity();
return FeedSearcher.performSearch(context, query, feed);
}
}
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