2 * Copyright © 2021 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.model;
20 import androidx.annotation.Nullable;
21 import androidx.lifecycle.LifecycleOwner;
22 import androidx.lifecycle.LiveData;
23 import androidx.lifecycle.MutableLiveData;
24 import androidx.lifecycle.Observer;
26 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
27 import net.ktnx.mobileledger.db.DB;
28 import net.ktnx.mobileledger.db.Profile;
29 import net.ktnx.mobileledger.utils.Locker;
30 import net.ktnx.mobileledger.utils.Logger;
32 import org.jetbrains.annotations.NotNull;
34 import java.text.DecimalFormatSymbols;
35 import java.text.NumberFormat;
36 import java.text.ParseException;
37 import java.text.ParsePosition;
38 import java.util.Date;
39 import java.util.List;
40 import java.util.Locale;
41 import java.util.concurrent.atomic.AtomicInteger;
43 import static net.ktnx.mobileledger.utils.Logger.debug;
45 public final class Data {
46 public static final MutableLiveData<Boolean> backgroundTasksRunning =
47 new MutableLiveData<>(false);
48 public static final MutableLiveData<RetrieveTransactionsTask.Progress> backgroundTaskProgress =
49 new MutableLiveData<>();
50 public static final LiveData<List<Profile>> profiles = DB.get()
53 public static final MutableLiveData<Currency.Position> currencySymbolPosition =
54 new MutableLiveData<>();
55 public static final MutableLiveData<Boolean> currencyGap = new MutableLiveData<>(true);
56 public static final MutableLiveData<Locale> locale = new MutableLiveData<>();
57 public static final MutableLiveData<Boolean> drawerOpen = new MutableLiveData<>(false);
58 public static final MutableLiveData<Date> lastUpdateDate = new MutableLiveData<>(null);
59 public static final MutableLiveData<Integer> lastUpdateTransactionCount =
60 new MutableLiveData<>(0);
61 public static final MutableLiveData<Integer> lastUpdateAccountCount = new MutableLiveData<>(0);
62 public static final MutableLiveData<String> lastTransactionsUpdateText =
63 new MutableLiveData<>();
64 public static final MutableLiveData<String> lastAccountsUpdateText = new MutableLiveData<>();
65 public static final String decimalDot = ".";
67 private static final MutableLiveData<Profile> profile = new MutableLiveData<>();
68 private static final AtomicInteger backgroundTaskCount = new AtomicInteger(0);
69 private static final Locker profilesLocker = new Locker();
70 private static NumberFormat numberFormatter;
71 private static String decimalSeparator = "";
74 locale.setValue(Locale.getDefault());
77 public static String getDecimalSeparator() {
78 return decimalSeparator;
81 public static Profile getProfile() {
82 return profile.getValue();
84 public static void backgroundTaskStarted() {
85 int cnt = backgroundTaskCount.incrementAndGet();
87 String.format(Locale.ENGLISH, "background task count is %d after incrementing",
89 backgroundTasksRunning.postValue(cnt > 0);
91 public static void backgroundTaskFinished() {
92 int cnt = backgroundTaskCount.decrementAndGet();
94 String.format(Locale.ENGLISH, "background task count is %d after decrementing",
96 backgroundTasksRunning.postValue(cnt > 0);
98 public static void setCurrentProfile(Profile newProfile) {
99 profile.setValue(newProfile);
101 public static void postCurrentProfile(Profile newProfile) {
102 profile.postValue(newProfile);
104 public static void refreshCurrencyData(Locale locale) {
105 NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);
106 java.util.Currency currency = formatter.getCurrency();
107 String symbol = currency != null ? currency.getSymbol() : "";
108 Logger.debug("locale", String.format(
109 "Discovering currency symbol position for locale %s (currency is %s; symbol is %s)",
110 locale.toString(), currency != null ? currency.toString() : "<none>", symbol));
111 String formatted = formatter.format(1234.56f);
112 Logger.debug("locale", String.format("1234.56 formats as '%s'", formatted));
114 if (formatted.startsWith(symbol)) {
115 currencySymbolPosition.setValue(Currency.Position.before);
117 // is the currency symbol directly followed by the first formatted digit?
118 final char canary = formatted.charAt(symbol.length());
119 currencyGap.setValue(canary != '1');
121 else if (formatted.endsWith(symbol)) {
122 currencySymbolPosition.setValue(Currency.Position.after);
124 // is the currency symbol directly preceded bu the last formatted digit?
125 final char canary = formatted.charAt(formatted.length() - symbol.length() - 1);
126 currencyGap.setValue(canary != '6');
129 currencySymbolPosition.setValue(Currency.Position.none);
131 NumberFormat newNumberFormatter = NumberFormat.getNumberInstance();
132 newNumberFormatter.setParseIntegerOnly(false);
133 newNumberFormatter.setGroupingUsed(true);
134 newNumberFormatter.setMinimumIntegerDigits(1);
135 newNumberFormatter.setMinimumFractionDigits(2);
137 numberFormatter = newNumberFormatter;
139 decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance(locale)
140 .getMonetaryDecimalSeparator());
143 public static String formatCurrency(float number) {
144 NumberFormat formatter = NumberFormat.getCurrencyInstance(locale.getValue());
145 return formatter.format(number);
148 public static String formatNumber(float number) {
149 return numberFormatter.format(number);
151 public static void observeProfile(LifecycleOwner lifecycleOwner, Observer<Profile> observer) {
152 profile.observe(lifecycleOwner, observer);
154 public static void removeProfileObservers(LifecycleOwner owner) {
155 profile.removeObservers(owner);
157 public static float parseNumber(String str) throws ParseException {
158 ParsePosition pos = new ParsePosition(0);
159 Number parsed = numberFormatter.parse(str);
160 if (parsed == null || pos.getErrorIndex() > -1)
161 throw new ParseException("Error parsing '" + str + "'", pos.getErrorIndex());
163 return parsed.floatValue();