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/*
* Copyright (C) 2014-2015 Dominik Schürmann <dominik@dominikschuermann.de>
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.ui;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
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;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.provider.KeychainContract;
import org.sufficientlysecure.keychain.ui.adapter.SubkeysAdapter;
import org.sufficientlysecure.keychain.util.Log;
public class ViewKeyAdvSubkeysFragment extends LoaderFragment implements
LoaderManager.LoaderCallbacks<Cursor> {
public static final String ARG_DATA_URI = "data_uri";
private ListView mSubkeysList;
private SubkeysAdapter mSubkeysAdapter;
private Uri mDataUriSubkeys;
/**
* Creates new instance of this fragment
*/
public static ViewKeyAdvSubkeysFragment newInstance(Uri dataUri) {
ViewKeyAdvSubkeysFragment frag = new ViewKeyAdvSubkeysFragment();
Bundle args = new Bundle();
args.putParcelable(ARG_DATA_URI, dataUri);
frag.setArguments(args);
return frag;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
View root = super.onCreateView(inflater, superContainer, savedInstanceState);
View view = inflater.inflate(R.layout.view_key_adv_subkeys_fragment, getContainer());
mSubkeysList = (ListView) view.findViewById(R.id.keys);
return root;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Uri dataUri = getArguments().getParcelable(ARG_DATA_URI);
if (dataUri == null) {
Log.e(Constants.TAG, "Data missing. Should be Uri of key!");
getActivity().finish();
return;
}
loadData(dataUri);
}
private void loadData(Uri dataUri) {
mDataUriSubkeys = KeychainContract.Keys.buildKeysUri(dataUri);
// Create an empty adapter we will use to display the loaded data.
mSubkeysAdapter = new SubkeysAdapter(getActivity(), null, 0);
mSubkeysList.setAdapter(mSubkeysAdapter);
// Prepare the loaders. Either re-connect with an existing ones,
// or start new ones.
getLoaderManager().initLoader(0, null, this);
}
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
setContentShown(false);
return new CursorLoader(getActivity(), mDataUriSubkeys,
SubkeysAdapter.SUBKEYS_PROJECTION, null, null, null);
}
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
// Avoid NullPointerExceptions, if we get an empty result set.
if (data.getCount() == 0) {
return;
}
// Swap the new cursor in. (The framework will take care of closing the
// old cursor once we return.)
mSubkeysAdapter.swapCursor(data);
// TODO: maybe show not before both are loaded!
setContentShown(true);
}
/**
* This is called when the last Cursor provided to onLoadFinished() above is about to be closed.
* We need to make sure we are no longer using it.
*/
public void onLoaderReset(Loader<Cursor> loader) {
mSubkeysAdapter.swapCursor(null);
}
}
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