2 * Copyright © 2018 Damyan Ivanov.
3 * This file is part of Mobile-Ledger.
4 * Mobile-Ledger is free software: you can distribute it and/or modify it
5 * under the term of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your opinion), any later version.
9 * Mobile-Ledger is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License terms for details.
14 * You should have received a copy of the GNU General Public License
15 * along with Mobile-Ledger. If not, see <https://www.gnu.org/licenses/>.
18 package net.ktnx.mobileledger.ui.transaction_list;
20 import android.arch.lifecycle.ViewModel;
21 import android.content.Context;
22 import android.database.Cursor;
23 import android.database.sqlite.SQLiteDatabase;
24 import android.util.Log;
26 import net.ktnx.mobileledger.model.LedgerTransaction;
27 import net.ktnx.mobileledger.utils.MLDB;
29 import java.util.ArrayList;
31 public class TransactionListViewModel extends ViewModel {
33 private ArrayList<LedgerTransaction> transactions;
35 public void reloadTransactions(Context context) {
36 ArrayList<LedgerTransaction> newList = new ArrayList<>();
38 String sql = "SELECT id FROM transactions ORDER BY date desc, id desc";
40 try (SQLiteDatabase db = MLDB.getReadableDatabase(context)) {
41 try (Cursor cursor = db.rawQuery(sql, null)) {
42 while (cursor.moveToNext()) {
43 newList.add(new LedgerTransaction(cursor.getInt(0)));
45 transactions = newList;
46 Log.d("transactions", "transaction list updated");
51 public LedgerTransaction getTransaction(int position) {
52 if (position >= transactions.size()) return null;
53 return transactions.get(position);
55 public int getTransactionCount() {
56 if (transactions == null) return 0;
57 return transactions.size();