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/*
This file is part of Subsonic.
Subsonic is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Subsonic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2010 (C) Sindre Mehus
*/
package github.daneren2005.dsub.fragments;
import android.os.Bundle;
import android.support.v4.widget.SwipeRefreshLayout;
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.ArrayAdapter;
import android.widget.ListView;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import github.daneren2005.dsub.R;
import github.daneren2005.dsub.service.MusicService;
import github.daneren2005.dsub.service.MusicServiceFactory;
import github.daneren2005.dsub.util.BackgroundTask;
import github.daneren2005.dsub.util.Constants;
import github.daneren2005.dsub.util.ProgressListener;
import github.daneren2005.dsub.util.TabBackgroundTask;
public abstract class SelectListFragment<T> extends SubsonicFragment implements AdapterView.OnItemClickListener {
private static final String TAG = SelectListFragment.class.getSimpleName();
protected ListView listView;
protected ArrayAdapter adapter;
protected BackgroundTask<List<T>> currentTask;
protected List<T> objects;
protected boolean serialize = true;
@Override
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
if(bundle != null && serialize) {
objects = (List<T>) bundle.getSerializable(Constants.FRAGMENT_LIST);
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
if(serialize) {
outState.putSerializable(Constants.FRAGMENT_LIST, (Serializable) objects);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) {
rootView = inflater.inflate(R.layout.abstract_list_fragment, container, false);
refreshLayout = (SwipeRefreshLayout) rootView.findViewById(R.id.refresh_layout);
refreshLayout.setOnRefreshListener(this);
listView = (ListView)rootView.findViewById(R.id.fragment_list);
listView.setOnItemClickListener(this);
setupScrollList(listView);
registerForContextMenu(listView);
if(objects == null) {
refresh(false);
} else {
listView.setAdapter(adapter = getAdapter(objects));
}
return rootView;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
if(!primaryFragment) {
return;
}
menuInflater.inflate(getOptionsMenu(), menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
return super.onOptionsItemSelected(item);
}
@Override
protected void refresh(final boolean refresh) {
int titleRes = getTitleResource();
if(titleRes != 0) {
setTitle(getTitleResource());
}
listView.setVisibility(View.GONE);
// Cancel current running task before starting another one
if(currentTask != null) {
currentTask.cancel();
}
currentTask = new TabBackgroundTask<List<T>>(this) {
@Override
protected List<T> doInBackground() throws Throwable {
MusicService musicService = MusicServiceFactory.getMusicService(context);
objects = new ArrayList<T>();
try {
objects = getObjects(musicService, refresh, this);
} catch (Exception x) {
Log.e(TAG, "Failed to load", x);
}
return objects;
}
@Override
protected void done(List<T> result) {
if (result != null && !result.isEmpty()) {
// Toggle fast scroll to get around issue when length of list changes
listView.setFastScrollEnabled(false);
listView.setAdapter(adapter = getAdapter(result));
listView.setFastScrollEnabled(true);
onFinishRefresh();
listView.setVisibility(View.VISIBLE);
} else {
setEmpty(true);
}
currentTask = null;
}
};
currentTask.execute();
}
public abstract int getOptionsMenu();
public abstract ArrayAdapter getAdapter(List<T> objs);
public abstract List<T> getObjects(MusicService musicService, boolean refresh, ProgressListener listener) throws Exception;
public abstract int getTitleResource();
public void onFinishRefresh() {
}
}
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