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/*
* Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
*
* 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 org.sufficientlysecure.keychain.ui;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
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.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import org.sufficientlysecure.keychain.Id;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
import org.sufficientlysecure.keychain.provider.KeychainContract.Keys;
import org.sufficientlysecure.keychain.provider.KeychainContract.UserIds;
import org.sufficientlysecure.keychain.provider.KeychainDatabase;
import org.sufficientlysecure.keychain.provider.KeychainDatabase.Tables;
import org.sufficientlysecure.keychain.ui.adapter.SelectKeyCursorAdapter;
import java.util.Date;
public class SelectSecretKeyFragment extends ListFragment implements
LoaderManager.LoaderCallbacks<Cursor> {
private SelectSecretKeyActivity mActivity;
private SelectKeyCursorAdapter mAdapter;
private ListView mListView;
private boolean mFilterCertify;
private static final String ARG_FILTER_CERTIFY = "filter_certify";
/**
* Creates new instance of this fragment
*/
public static SelectSecretKeyFragment newInstance(boolean filterCertify) {
SelectSecretKeyFragment frag = new SelectSecretKeyFragment();
Bundle args = new Bundle();
args.putBoolean(ARG_FILTER_CERTIFY, filterCertify);
frag.setArguments(args);
return frag;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mFilterCertify = getArguments().getBoolean(ARG_FILTER_CERTIFY);
}
/**
* Define Adapter and Loader on create of Activity
*/
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mActivity = (SelectSecretKeyActivity) getActivity();
mListView = getListView();
mListView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
long masterKeyId = mAdapter.getMasterKeyId(position);
Uri result = KeyRings.buildGenericKeyRingUri(String.valueOf(masterKeyId));
// return data to activity, which results in finishing it
mActivity.afterListSelection(result);
}
});
// Give some text to display if there is no data. In a real
// application this would come from a resource.
setEmptyText(getString(R.string.list_empty));
mAdapter = new SelectKeyCursorAdapter(mActivity, null, 0, mListView, Id.type.secret_key);
setListAdapter(mAdapter);
// Start out with a progress indicator.
setListShown(false);
// Prepare the loader. Either re-connect with an existing one,
// or start a new one.
getLoaderManager().initLoader(0, null, this);
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
// This is called when a new Loader needs to be created. This
// sample only has one Loader, so we don't care about the ID.
Uri baseUri = KeyRings.buildUnifiedKeyRingsUri();
// These are the rows that we will retrieve.
long now = new Date().getTime() / 1000;
String[] projection = new String[]{
KeyRings._ID,
KeyRings.MASTER_KEY_ID,
UserIds.USER_ID,
"(SELECT COUNT(*) FROM " + Tables.KEYS + " AS k"
+ " WHERE k." + Keys.MASTER_KEY_ID + " = "
+ KeychainDatabase.Tables.KEYS + "." + KeyRings.MASTER_KEY_ID
+ " AND k." + Keys.CAN_CERTIFY + " = '1'"
+ ") AS cert",
"(SELECT COUNT(*) FROM " + Tables.KEYS + " AS k"
+" WHERE k." + Keys.MASTER_KEY_ID + " = "
+ KeychainDatabase.Tables.KEYS + "." + Keys.MASTER_KEY_ID
+ " AND k." + Keys.IS_REVOKED + " = '0'"
+ " AND k." + Keys.CAN_SIGN + " = '1'"
+ ") AS " + SelectKeyCursorAdapter.PROJECTION_ROW_AVAILABLE,
"(SELECT COUNT(*) FROM " + Tables.KEYS + " AS k"
+ " WHERE k." + Keys.MASTER_KEY_ID + " = "
+ KeychainDatabase.Tables.KEYS + "." + Keys.MASTER_KEY_ID
+ " AND k." + Keys.IS_REVOKED + " = '0'"
+ " AND k." + Keys.CAN_SIGN + " = '1'"
+ " AND k." + Keys.CREATION + " <= '" + now + "'"
+ " AND ( k." + Keys.EXPIRY + " IS NULL OR k." + Keys.EXPIRY + " >= '" + now + "' )"
+ ") AS " + SelectKeyCursorAdapter.PROJECTION_ROW_VALID, };
String orderBy = UserIds.USER_ID + " ASC";
String where = Tables.KEY_RINGS_SECRET + "." + KeyRings.MASTER_KEY_ID + " IS NOT NULL";
if (mFilterCertify) {
where += " AND (cert > 0)";
}
// Now create and return a CursorLoader that will take care of
// creating a Cursor for the data being displayed.
return new CursorLoader(getActivity(), baseUri, projection, where, null, orderBy);
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
// Swap the new cursor in. (The framework will take care of closing the
// old cursor once we return.)
mAdapter.swapCursor(data);
// The list should now be shown.
if (isResumed()) {
setListShown(true);
} else {
setListShownNoAnimation(true);
}
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
// 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.
mAdapter.swapCursor(null);
}
}
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