diff options
Diffstat (limited to 'src/de/danoeh/antennapod/fragment/SearchFragment.java')
| -rw-r--r-- | src/de/danoeh/antennapod/fragment/SearchFragment.java | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/src/de/danoeh/antennapod/fragment/SearchFragment.java b/src/de/danoeh/antennapod/fragment/SearchFragment.java new file mode 100644 index 000000000..f89e44717 --- /dev/null +++ b/src/de/danoeh/antennapod/fragment/SearchFragment.java @@ -0,0 +1,254 @@ +package de.danoeh.antennapod.fragment; + +import android.content.Context; +import android.os.AsyncTask; +import android.os.Bundle; +import android.support.v4.app.ListFragment; +import android.support.v4.view.MenuItemCompat; +import android.support.v7.app.ActionBarActivity; +import android.support.v7.widget.SearchView; +import android.view.Menu; +import android.view.MenuInflater; +import android.view.MenuItem; +import android.view.View; +import android.widget.ListView; +import de.danoeh.antennapod.R; +import de.danoeh.antennapod.activity.MainActivity; +import de.danoeh.antennapod.adapter.SearchlistAdapter; +import de.danoeh.antennapod.dialog.FeedItemDialog; +import de.danoeh.antennapod.feed.*; +import de.danoeh.antennapod.storage.DBReader; +import de.danoeh.antennapod.storage.FeedSearcher; +import de.danoeh.antennapod.util.QueueAccess; + +import java.util.List; + +/** + * Performs a search operation on all feeds or one specific feed and displays the search result. + */ +public class SearchFragment extends ListFragment { + private static final String TAG = "SearchFragment"; + + private static final String ARG_QUERY = "query"; + private static final String ARG_FEED = "feed"; + + private SearchlistAdapter searchAdapter; + private List<SearchResult> searchResults; + + private boolean viewCreated = false; + private boolean itemsLoaded = false; + + private QueueAccess queue; + + private FeedItemDialog feedItemDialog; + private FeedItemDialog.FeedItemDialogSavedInstance feedItemDialogSavedInstance; + + /** + * 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); + startSearchTask(); + } + + @Override + public void onStart() { + super.onStart(); + EventDistributor.getInstance().register(contentUpdate); + } + + @Override + public void onStop() { + super.onStop(); + stopSearchTask(); + EventDistributor.getInstance().unregister(contentUpdate); + } + + @Override + public void onDetach() { + super.onDetach(); + stopSearchTask(); + } + + @Override + public void onDestroyView() { + super.onDestroyView(); + searchAdapter = null; + viewCreated = false; + if (feedItemDialog != null) { + feedItemDialogSavedInstance = feedItemDialog.save(); + } + feedItemDialog = null; + } + + @Override + public void onViewCreated(View view, Bundle savedInstanceState) { + super.onViewCreated(view, savedInstanceState); + ((ActionBarActivity) getActivity()).getSupportActionBar().setTitle(R.string.search_label); + viewCreated = true; + if (itemsLoaded) { + onFragmentLoaded(); + } + } + + @Override + public void onListItemClick(ListView l, View v, int position, long id) { + super.onListItemClick(l, v, position, id); + SearchResult result = (SearchResult) l.getAdapter().getItem(position); + FeedComponent comp = result.getComponent(); + if (comp.getClass() == Feed.class) { + ((MainActivity)getActivity()).loadFeedFragment(comp.getId()); + } else { + if (comp.getClass() == FeedItem.class) { + feedItemDialog = FeedItemDialog.newInstance(getActivity(), (FeedItem) comp, queue); + feedItemDialog.show(); + } + } + } + + @Override + public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { + super.onCreateOptionsMenu(menu, inflater); + MenuItem item = menu.add(Menu.NONE, R.id.search_item, Menu.NONE, R.string.search_label); + MenuItemCompat.setShowAsAction(item, MenuItemCompat.SHOW_AS_ACTION_IF_ROOM); + final SearchView sv = new SearchView(getActivity()); + sv.setQueryHint(getString(R.string.search_hint)); + sv.setQuery(getArguments().getString(ARG_QUERY), false); + sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() { + @Override + public boolean onQueryTextSubmit(String s) { + getArguments().putString(ARG_QUERY, s); + itemsLoaded = false; + startSearchTask(); + return true; + } + + @Override + public boolean onQueryTextChange(String s) { + return false; + } + }); + MenuItemCompat.setActionView(item, sv); + } + + private final EventDistributor.EventListener contentUpdate = new EventDistributor.EventListener() { + @Override + public void update(EventDistributor eventDistributor, Integer arg) { + if ((arg & (EventDistributor.DOWNLOAD_QUEUED)) != 0) { + feedItemDialog.updateMenuAppearance(); + } + if ((arg & (EventDistributor.UNREAD_ITEMS_UPDATE + | EventDistributor.DOWNLOAD_HANDLED + | EventDistributor.QUEUE_UPDATE)) != 0) { + startSearchTask(); + } + } + }; + + private void onFragmentLoaded() { + if (searchAdapter == null) { + searchAdapter = new SearchlistAdapter(getActivity(), itemAccess); + setListAdapter(searchAdapter); + } + searchAdapter.notifyDataSetChanged(); + setListShown(true); + if (feedItemDialog != null && feedItemDialog.isShowing()) { + feedItemDialog.setQueue(queue); + for (SearchResult result : searchResults) { + FeedComponent comp = result.getComponent(); + if (comp.getClass() == FeedItem.class && ((FeedItem) comp).getId() == feedItemDialog.getItem().getId()) { + feedItemDialog.setItem((FeedItem) comp); + } + } + feedItemDialog.updateMenuAppearance(); + } else if (feedItemDialogSavedInstance != null) { + feedItemDialog = FeedItemDialog.newInstance(getActivity(), feedItemDialogSavedInstance); + } + } + + private final SearchlistAdapter.ItemAccess itemAccess = new SearchlistAdapter.ItemAccess() { + @Override + public int getCount() { + return (searchResults != null) ? searchResults.size() : 0; + } + + @Override + public SearchResult getItem(int position) { + return (searchResults != null) ? searchResults.get(position) : null; + } + }; + + private SearchTask searchTask; + + private void startSearchTask() { + if (searchTask != null) { + searchTask.cancel(true); + } + searchTask = new SearchTask(); + searchTask.execute(getArguments()); + } + + private void stopSearchTask() { + if (searchTask != null) { + searchTask.cancel(true); + } + } + + private class SearchTask extends AsyncTask<Bundle, Void, Object[]> { + @Override + protected Object[] doInBackground(Bundle... params) { + String query = params[0].getString(ARG_QUERY); + long feed = params[0].getLong(ARG_FEED); + Context context = getActivity(); + if (context != null) { + return new Object[]{FeedSearcher.performSearch(context, query, feed), + QueueAccess.IDListAccess(DBReader.getQueueIDList(context))}; + } else { + return null; + } + } + + @Override + protected void onPreExecute() { + super.onPreExecute(); + if (viewCreated && !itemsLoaded) { + setListShown(false); + } + } + + @Override + protected void onPostExecute(Object[] results) { + super.onPostExecute(results); + if (results != null) { + itemsLoaded = true; + searchResults = (List<SearchResult>) results[0]; + queue = (QueueAccess) results[1]; + if (viewCreated) { + onFragmentLoaded(); + } + } + } + } +} |