2 * Copyright © 2019 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 android.database.Cursor;
21 import android.database.sqlite.SQLiteDatabase;
22 import android.os.AsyncTask;
24 import androidx.lifecycle.MutableLiveData;
26 import net.ktnx.mobileledger.App;
27 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
28 import net.ktnx.mobileledger.ui.activity.MainActivity;
29 import net.ktnx.mobileledger.utils.LockHolder;
30 import net.ktnx.mobileledger.utils.Locker;
31 import net.ktnx.mobileledger.utils.Logger;
32 import net.ktnx.mobileledger.utils.MLDB;
33 import net.ktnx.mobileledger.utils.ObservableList;
35 import java.lang.ref.WeakReference;
36 import java.text.NumberFormat;
37 import java.util.ArrayList;
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 ObservableList<TransactionListItem> transactions =
47 new ObservableList<>(new ArrayList<>());
48 public static final ObservableList<LedgerAccount> accounts = new ObservableList<>(new ArrayList<>());
49 public static final MutableLiveData<Boolean> backgroundTasksRunning = new MutableLiveData<>(false);
50 public static final MutableLiveData<Date> lastUpdateDate = new MutableLiveData<>();
51 public static final MutableLiveData<MobileLedgerProfile> profile = new InertMutableLiveData<>();
52 public static final MutableLiveData<ArrayList<MobileLedgerProfile>> profiles =
53 new MutableLiveData<>(null);
54 public static final MutableLiveData<String> accountFilter = new MutableLiveData<>();
55 public static final MutableLiveData<Currency.Position> currencySymbolPosition =
56 new MutableLiveData<>();
57 public static final MutableLiveData<Boolean> currencyGap = new MutableLiveData<>(true);
58 public static final MutableLiveData<Locale> locale = new MutableLiveData<>(Locale.getDefault());
59 private static final AtomicInteger backgroundTaskCount = new AtomicInteger(0);
60 private static final Locker profilesLocker = new Locker();
61 private static RetrieveTransactionsTask retrieveTransactionsTask;
62 public static final MutableLiveData<Boolean> drawerOpen = new MutableLiveData<>(false);
63 public static void backgroundTaskStarted() {
64 int cnt = backgroundTaskCount.incrementAndGet();
66 String.format(Locale.ENGLISH, "background task count is %d after incrementing",
68 backgroundTasksRunning.postValue(cnt > 0);
70 public static void backgroundTaskFinished() {
71 int cnt = backgroundTaskCount.decrementAndGet();
73 String.format(Locale.ENGLISH, "background task count is %d after decrementing",
75 backgroundTasksRunning.postValue(cnt > 0);
77 public static void setCurrentProfile(MobileLedgerProfile newProfile) {
78 MLDB.setOption(MLDB.OPT_PROFILE_UUID, (newProfile == null) ? null : newProfile.getUuid());
79 stopTransactionsRetrieval();
80 profile.setValue(newProfile);
82 public static int getProfileIndex(MobileLedgerProfile profile) {
83 try (LockHolder ignored = profilesLocker.lockForReading()) {
84 List<MobileLedgerProfile> prList = profiles.getValue();
86 throw new AssertionError();
87 for (int i = 0; i < prList.size(); i++) {
88 MobileLedgerProfile p = prList.get(i);
89 if (p.equals(profile))
96 @SuppressWarnings("WeakerAccess")
97 public static int getProfileIndex(String profileUUID) {
98 try (LockHolder ignored = profilesLocker.lockForReading()) {
99 List<MobileLedgerProfile> prList = profiles.getValue();
101 throw new AssertionError();
102 for (int i = 0; i < prList.size(); i++) {
103 MobileLedgerProfile p = prList.get(i);
105 .equals(profileUUID))
112 public static int retrieveCurrentThemeIdFromDb() {
113 String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
114 if (profileUUID == null)
117 SQLiteDatabase db = App.getDatabase();
118 try (Cursor c = db.rawQuery("SELECT theme from profiles where uuid=?",
119 new String[]{profileUUID}))
127 public static MobileLedgerProfile getProfile(String profileUUID) {
128 MobileLedgerProfile profile;
129 try (LockHolder readLock = profilesLocker.lockForReading()) {
130 List<MobileLedgerProfile> prList = profiles.getValue();
131 if ((prList == null) || prList.isEmpty()) {
133 try (LockHolder ignored = profilesLocker.lockForWriting()) {
134 profile = MobileLedgerProfile.loadAllFromDB(profileUUID);
138 int i = getProfileIndex(profileUUID);
141 profile = prList.get(i);
146 public synchronized static void scheduleTransactionListRetrieval(MainActivity activity) {
147 if (retrieveTransactionsTask != null) {
148 Logger.debug("db", "Ignoring request for transaction retrieval - already active");
151 MobileLedgerProfile pr = profile.getValue();
153 Logger.debug("ui", "Ignoring refresh -- no current profile");
157 retrieveTransactionsTask =
158 new RetrieveTransactionsTask(new WeakReference<>(activity), profile.getValue());
159 Logger.debug("db", "Created a background transaction retrieval task");
161 retrieveTransactionsTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
163 public static synchronized void stopTransactionsRetrieval() {
164 if (retrieveTransactionsTask != null)
165 retrieveTransactionsTask.cancel(false);
167 public static void transactionRetrievalDone() {
168 retrieveTransactionsTask = null;
170 public static void refreshCurrencyData(Locale locale) {
171 NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);
172 java.util.Currency currency = formatter.getCurrency();
173 String symbol = currency.getSymbol();
174 Logger.debug("locale", String.format(
175 "Discovering currency symbol position for locale %s (currency is %s; symbol is %s)",
176 locale.toString(), currency.toString(), symbol));
177 String formatted = formatter.format(1234.56f);
178 Logger.debug("locale", String.format("1234.56 formats as '%s'", formatted));
180 if (formatted.startsWith(symbol)) {
181 currencySymbolPosition.setValue(Currency.Position.before);
183 // is the currency symbol directly followed by the first formatted digit?
184 final char canary = formatted.charAt(symbol.length());
185 currencyGap.setValue(canary != '1');
187 else if (formatted.endsWith(symbol)) {
188 currencySymbolPosition.setValue(Currency.Position.after);
190 // is the currency symbol directly preceded bu the last formatted digit?
191 final char canary = formatted.charAt(formatted.length() - symbol.length() - 1);
192 currencyGap.setValue(canary != '6');
195 currencySymbolPosition.setValue(Currency.Position.none);