2 * Copyright © 2020 Damyan Ivanov.
3 * This file is part of MoLe.
4 * MoLe 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 * MoLe 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 MoLe. If not, see <https://www.gnu.org/licenses/>.
18 package net.ktnx.mobileledger.async;
20 import android.os.AsyncTask;
22 import net.ktnx.mobileledger.model.TransactionListItem;
23 import net.ktnx.mobileledger.ui.MainModel;
24 import net.ktnx.mobileledger.utils.Logger;
25 import net.ktnx.mobileledger.utils.SimpleDate;
27 import java.util.Collections;
28 import java.util.Comparator;
29 import java.util.List;
30 import java.util.Locale;
31 import java.util.Objects;
33 public class TransactionDateFinder extends AsyncTask<TransactionDateFinder.Params, Void, Integer> {
34 private MainModel model;
36 protected void onPostExecute(Integer pos) {
37 model.foundTransactionItemIndex.setValue(pos);
40 protected Integer doInBackground(Params... param) {
41 this.model = param[0].model;
42 SimpleDate date = param[0].date;
43 Logger.debug("go-to-date",
44 String.format(Locale.US, "Looking for date %04d-%02d-%02d", date.year, date.month,
46 List<TransactionListItem> transactions = Objects.requireNonNull(
47 param[0].model.getDisplayedTransactions()
49 Logger.debug("go-to-date",
50 String.format(Locale.US, "List contains %d transactions", transactions.size()));
52 TransactionListItem target = new TransactionListItem(date, true);
54 Collections.binarySearch(transactions, target, new TransactionListItemComparator());
61 public static class Params {
62 public MainModel model;
63 public SimpleDate date;
64 public Params(MainModel model, SimpleDate date) {
70 static class TransactionListItemComparator implements Comparator<TransactionListItem> {
72 public int compare(TransactionListItem a, TransactionListItem b) {
73 final SimpleDate aDate = a.getDate();
74 final SimpleDate bDate = b.getDate();
75 int res = aDate.compareTo(bDate);
77 return -res; // transactions are reverse sorted by date
79 if (a.getType() == TransactionListItem.Type.DELIMITER) {
80 if (b.getType() == TransactionListItem.Type.DELIMITER)
86 if (b.getType() == TransactionListItem.Type.DELIMITER)