/*
* Copyright 2012 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.android.apps.iosched.ui;
import com.google.analytics.tracking.android.EasyTracker;
import com.google.android.apps.iosched.R;
import com.google.android.apps.iosched.provider.ScheduleContract;
import com.google.android.apps.iosched.ui.TracksAdapter.TracksQuery;
import com.google.android.apps.iosched.util.UIUtils;
import com.actionbarsherlock.app.SherlockListFragment;
import android.app.Activity;
import android.content.Intent;
import android.database.ContentObserver;
import android.database.Cursor;
import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.ListFragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
/**
* A simple {@link ListFragment} that renders a list of tracks and a map button at the top.
*/
public class ExploreFragment extends SherlockListFragment implements
LoaderManager.LoaderCallbacks<Cursor> {
private TracksAdapter mAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mAdapter = new TracksAdapter(getActivity());
setListAdapter(mAdapter);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
final ListView listView = getListView();
listView.setSelector(android.R.color.transparent);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// As of support library r8, calling initLoader for a fragment in a
// FragmentPagerAdapter in the fragment's onCreate may cause the same LoaderManager to be
// dealt to multiple fragments because their mIndex is -1 (haven't been added to the
// activity yet). Thus, we do this in onActivityCreated.
getLoaderManager().initLoader(TracksQuery._TOKEN, null, this);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ViewGroup root = (ViewGroup) inflater.inflate(
R.layout.fragment_list_with_empty_container, container, false);
root.setBackgroundColor(Color.WHITE);
return root;
}
private final ContentObserver mObserver = new ContentObserver(new Handler()) {
@Override
public void onChange(boolean selfChange) {
if (getActivity() == null) {
return;
}
Loader<Cursor> loader = getLoaderManager().getLoader(TracksQuery._TOKEN);
if (loader != null) {
loader.forceLoad();
}
}
};
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
activity.getContentResolver().registerContentObserver(
ScheduleContract.Sessions.CONTENT_URI, true, mObserver);
}
@Override
public void onDetach() {
super.onDetach();
getActivity().getContentResolver().unregisterContentObserver(mObserver);
}
/** {@inheritDoc} */
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
if (mAdapter.isMapItem(position)) {
// Launch map of conference venue
EasyTracker.getTracker().trackEvent(
"Home Screen Dashboard", "Click", "Map", 0L);
startActivity(new Intent(getActivity(),
UIUtils.getMapActivityClass(getActivity())));
return;
}
final Cursor cursor = (Cursor) mAdapter.getItem(position);
final String trackId;
if (cursor != null) {
trackId = cursor.getString(TracksAdapter.TracksQuery.TRACK_ID);
} else {
trackId = ScheduleContract.Tracks.ALL_TRACK_ID;
}
final Intent intent = new Intent(Intent.ACTION_VIEW);
final Uri trackUri = ScheduleContract.Tracks.buildTrackUri(trackId);
intent.setData(trackUri);
startActivity(intent);
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle data) {
Intent intent = BaseActivity.fragmentArgumentsToIntent(getArguments());
Uri tracksUri = intent.getData();
if (tracksUri == null) {
tracksUri = ScheduleContract.Tracks.CONTENT_URI;
}
// Filter our tracks query to only include those with valid results
String[] projection = TracksAdapter.TracksQuery.PROJECTION;
String selection = null;
return new CursorLoader(getActivity(), tracksUri, projection, selection, null,
ScheduleContract.Tracks.DEFAULT_SORT);
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
if (getActivity() == null) {
return;
}
mAdapter.setHasMapItem(true);
mAdapter.setHasAllItem(true);
mAdapter.changeCursor(cursor);
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
}
}