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.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;
34 import net.ktnx.mobileledger.utils.SimpleDate;
36 import java.lang.ref.WeakReference;
37 import java.text.NumberFormat;
38 import java.util.ArrayList;
39 import java.util.Date;
40 import java.util.List;
41 import java.util.Locale;
42 import java.util.concurrent.atomic.AtomicInteger;
44 import static net.ktnx.mobileledger.utils.Logger.debug;
46 public final class Data {
47 public static final ObservableList<TransactionListItem> transactions =
48 new ObservableList<>(new ArrayList<>());
49 public static final MutableLiveData<SimpleDate> earliestTransactionDate =
50 new MutableLiveData<>(null);
51 public static final MutableLiveData<SimpleDate> latestTransactionDate =
52 new MutableLiveData<>(null);
53 public static final MutableLiveData<Boolean> backgroundTasksRunning =
54 new MutableLiveData<>(false);
55 public static final MutableLiveData<Date> lastUpdateDate = new MutableLiveData<>();
56 public static final MutableLiveData<MobileLedgerProfile> profile = new InertMutableLiveData<>();
57 public static final MutableLiveData<ArrayList<MobileLedgerProfile>> profiles =
58 new MutableLiveData<>(null);
59 public static final MutableLiveData<String> accountFilter = new MutableLiveData<>();
60 public static final MutableLiveData<Currency.Position> currencySymbolPosition =
61 new MutableLiveData<>();
62 public static final MutableLiveData<Boolean> currencyGap = new MutableLiveData<>(true);
63 public static final MutableLiveData<Locale> locale = new MutableLiveData<>(Locale.getDefault());
64 private static final AtomicInteger backgroundTaskCount = new AtomicInteger(0);
65 private static final Locker profilesLocker = new Locker();
66 public static MutableLiveData<Integer> foundTransactionItemIndex = new MutableLiveData<>(null);
67 private static RetrieveTransactionsTask retrieveTransactionsTask;
68 public static final MutableLiveData<Boolean> drawerOpen = new MutableLiveData<>(false);
69 public static void backgroundTaskStarted() {
70 int cnt = backgroundTaskCount.incrementAndGet();
72 String.format(Locale.ENGLISH, "background task count is %d after incrementing",
74 backgroundTasksRunning.postValue(cnt > 0);
76 public static void backgroundTaskFinished() {
77 int cnt = backgroundTaskCount.decrementAndGet();
79 String.format(Locale.ENGLISH, "background task count is %d after decrementing",
81 backgroundTasksRunning.postValue(cnt > 0);
83 public static void setCurrentProfile(MobileLedgerProfile newProfile) {
84 MLDB.setOption(MLDB.OPT_PROFILE_UUID, (newProfile == null) ? null : newProfile.getUuid());
85 stopTransactionsRetrieval();
86 profile.setValue(newProfile);
88 public static int getProfileIndex(MobileLedgerProfile profile) {
89 try (LockHolder ignored = profilesLocker.lockForReading()) {
90 List<MobileLedgerProfile> prList = profiles.getValue();
92 throw new AssertionError();
93 for (int i = 0; i < prList.size(); i++) {
94 MobileLedgerProfile p = prList.get(i);
95 if (p.equals(profile))
102 @SuppressWarnings("WeakerAccess")
103 public static int getProfileIndex(String profileUUID) {
104 try (LockHolder ignored = profilesLocker.lockForReading()) {
105 List<MobileLedgerProfile> prList = profiles.getValue();
107 throw new AssertionError();
108 for (int i = 0; i < prList.size(); i++) {
109 MobileLedgerProfile p = prList.get(i);
111 .equals(profileUUID))
118 public static int retrieveCurrentThemeIdFromDb() {
119 String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
120 if (profileUUID == null)
123 SQLiteDatabase db = App.getDatabase();
124 try (Cursor c = db.rawQuery("SELECT theme from profiles where uuid=?",
125 new String[]{profileUUID}))
133 public static MobileLedgerProfile getProfile(String profileUUID) {
134 MobileLedgerProfile profile;
135 try (LockHolder readLock = profilesLocker.lockForReading()) {
136 List<MobileLedgerProfile> prList = profiles.getValue();
137 if ((prList == null) || prList.isEmpty()) {
139 try (LockHolder ignored = profilesLocker.lockForWriting()) {
140 profile = MobileLedgerProfile.loadAllFromDB(profileUUID);
144 int i = getProfileIndex(profileUUID);
147 profile = prList.get(i);
152 public synchronized static void scheduleTransactionListRetrieval(MainActivity activity) {
153 if (retrieveTransactionsTask != null) {
154 Logger.debug("db", "Ignoring request for transaction retrieval - already active");
157 MobileLedgerProfile pr = profile.getValue();
159 Logger.debug("ui", "Ignoring refresh -- no current profile");
163 retrieveTransactionsTask =
164 new RetrieveTransactionsTask(new WeakReference<>(activity), profile.getValue());
165 Logger.debug("db", "Created a background transaction retrieval task");
167 retrieveTransactionsTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
169 public static synchronized void stopTransactionsRetrieval() {
170 if (retrieveTransactionsTask != null)
171 retrieveTransactionsTask.cancel(false);
173 public static void transactionRetrievalDone() {
174 retrieveTransactionsTask = null;
176 public static void refreshCurrencyData(Locale locale) {
177 NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);
178 java.util.Currency currency = formatter.getCurrency();
179 String symbol = currency.getSymbol();
180 Logger.debug("locale", String.format(
181 "Discovering currency symbol position for locale %s (currency is %s; symbol is %s)",
182 locale.toString(), currency.toString(), symbol));
183 String formatted = formatter.format(1234.56f);
184 Logger.debug("locale", String.format("1234.56 formats as '%s'", formatted));
186 if (formatted.startsWith(symbol)) {
187 currencySymbolPosition.setValue(Currency.Position.before);
189 // is the currency symbol directly followed by the first formatted digit?
190 final char canary = formatted.charAt(symbol.length());
191 currencyGap.setValue(canary != '1');
193 else if (formatted.endsWith(symbol)) {
194 currencySymbolPosition.setValue(Currency.Position.after);
196 // is the currency symbol directly preceded bu the last formatted digit?
197 final char canary = formatted.charAt(formatted.length() - symbol.length() - 1);
198 currencyGap.setValue(canary != '6');
201 currencySymbolPosition.setValue(Currency.Position.none);