open-keychain/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/SelectPublicKeyFragment.java
2013-01-16 14:31:16 +01:00

233 lines
8.8 KiB
Java

/*
* Copyright (C) 2012 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 java.util.Date;
import java.util.Vector;
import org.sufficientlysecure.keychain.Id;
import org.sufficientlysecure.keychain.compatibility.ListFragmentWorkaround;
import org.sufficientlysecure.keychain.provider.KeychainDatabase;
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.Tables;
import org.sufficientlysecure.keychain.ui.widget.SelectKeyCursorAdapter;
import org.sufficientlysecure.keychain.R;
import android.database.Cursor;
import android.database.DatabaseUtils;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v4.app.LoaderManager;
import android.widget.ListView;
public class SelectPublicKeyFragment extends ListFragmentWorkaround implements
LoaderManager.LoaderCallbacks<Cursor> {
private SelectPublicKeyActivity mActivity;
private SelectKeyCursorAdapter mAdapter;
private ListView mListView;
private long mSelectedMasterKeyIds[];
/**
* Define Adapter and Loader on create of Activity
*/
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mActivity = (SelectPublicKeyActivity) getSherlockActivity();
mListView = getListView();
// get selected master key ids, which are given to activity by intent
mSelectedMasterKeyIds = mActivity.getSelectedMasterKeyIds();
mListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
// Give some text to display if there is no data. In a real
// application this would come from a resource.
setEmptyText(getString(R.string.listEmpty));
mAdapter = new SelectKeyCursorAdapter(mActivity, mListView, null, Id.type.public_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);
}
/**
* Selects items based on master key ids in list view
*
* @param masterKeyIds
*/
private void preselectMasterKeyIds(long[] masterKeyIds) {
if (masterKeyIds != null) {
for (int i = 0; i < mListView.getCount(); ++i) {
long keyId = mAdapter.getMasterKeyId(i);
for (int j = 0; j < masterKeyIds.length; ++j) {
if (keyId == masterKeyIds[j]) {
mListView.setItemChecked(i, true);
break;
}
}
}
}
}
/**
* Returns all selected master key ids
*
* @return
*/
public long[] getSelectedMasterKeyIds() {
// mListView.getCheckedItemIds() would give the row ids of the KeyRings not the master key
// ids!
Vector<Long> vector = new Vector<Long>();
for (int i = 0; i < mListView.getCount(); ++i) {
if (mListView.isItemChecked(i)) {
vector.add(mAdapter.getMasterKeyId(i));
}
}
// convert to long array
long[] selectedMasterKeyIds = new long[vector.size()];
for (int i = 0; i < vector.size(); ++i) {
selectedMasterKeyIds[i] = vector.get(i);
}
return selectedMasterKeyIds;
}
/**
* Returns all selected user ids
*
* @return
*/
public String[] getSelectedUserIds() {
Vector<String> userIds = new Vector<String>();
for (int i = 0; i < mListView.getCount(); ++i) {
if (mListView.isItemChecked(i)) {
userIds.add((String) mAdapter.getUserId(i));
}
}
// make empty array to not return null
String userIdArray[] = new String[0];
return userIds.toArray(userIdArray);
}
@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.buildPublicKeyRingsUri();
// 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(available_keys." + Keys._ID + ") FROM " + Tables.KEYS
+ " AS available_keys WHERE available_keys." + Keys.KEY_RING_ROW_ID + " = "
+ KeychainDatabase.Tables.KEY_RINGS + "." + KeyRings._ID
+ " AND available_keys." + Keys.IS_REVOKED + " = '0' AND available_keys."
+ Keys.CAN_ENCRYPT + " = '1') AS "
+ SelectKeyCursorAdapter.PROJECTION_ROW_AVAILABLE,
"(SELECT COUNT(valid_keys." + Keys._ID + ") FROM " + Tables.KEYS
+ " AS valid_keys WHERE valid_keys." + Keys.KEY_RING_ROW_ID + " = "
+ KeychainDatabase.Tables.KEY_RINGS + "." + KeyRings._ID + " AND valid_keys."
+ Keys.IS_REVOKED + " = '0' AND valid_keys." + Keys.CAN_ENCRYPT
+ " = '1' AND valid_keys." + Keys.CREATION + " <= '" + now + "' AND "
+ "(valid_keys." + Keys.EXPIRY + " IS NULL OR valid_keys." + Keys.EXPIRY
+ " >= '" + now + "')) AS " + SelectKeyCursorAdapter.PROJECTION_ROW_VALID, };
String inMasterKeyList = null;
if (mSelectedMasterKeyIds != null && mSelectedMasterKeyIds.length > 0) {
inMasterKeyList = KeyRings.MASTER_KEY_ID + " IN (";
for (int i = 0; i < mSelectedMasterKeyIds.length; ++i) {
if (i != 0) {
inMasterKeyList += ", ";
}
inMasterKeyList += DatabaseUtils.sqlEscapeString("" + mSelectedMasterKeyIds[i]);
}
inMasterKeyList += ")";
}
// if (searchString != null && searchString.trim().length() > 0) {
// String[] chunks = searchString.trim().split(" +");
// qb.appendWhere("(EXISTS (SELECT tmp." + UserIds._ID + " FROM " + UserIds.TABLE_NAME
// + " AS tmp WHERE " + "tmp." + UserIds.KEY_ID + " = " + Keys.TABLE_NAME + "."
// + Keys._ID);
// for (int i = 0; i < chunks.length; ++i) {
// qb.appendWhere(" AND tmp." + UserIds.USER_ID + " LIKE ");
// qb.appendWhereEscapeString("%" + chunks[i] + "%");
// }
// qb.appendWhere("))");
//
// if (inIdList != null) {
// qb.appendWhere(" OR (" + inIdList + ")");
// }
// }
String orderBy = UserIds.USER_ID + " ASC";
if (inMasterKeyList != null) {
// sort by selected master keys
orderBy = inMasterKeyList + " DESC, " + orderBy;
}
// 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, null, 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);
}
// preselect given master keys
preselectMasterKeyIds(mSelectedMasterKeyIds);
}
@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);
}
}