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 ObservableList<TransactionListItem> transactions =
47 new ObservableList<>(new ArrayList<>());
48 public static ObservableList<LedgerAccount> accounts = new ObservableList<>(new ArrayList<>());
49 public static MutableLiveData<Boolean> backgroundTasksRunning = new MutableLiveData<>(false);
50 public static MutableLiveData<Date> lastUpdateDate = new MutableLiveData<>();
51 public static MutableLiveData<MobileLedgerProfile> profile = new MutableLiveData<>();
52 public static MutableLiveData<ArrayList<MobileLedgerProfile>> profiles =
53 new MutableLiveData<>(null);
54 public static MutableLiveData<String> accountFilter = new MutableLiveData<>();
55 public static MutableLiveData<Currency.Position> currencySymbolPosition =
56 new MutableLiveData<>();
57 public static MutableLiveData<Boolean> currencyGap = new MutableLiveData<>(true);
58 private static AtomicInteger backgroundTaskCount = new AtomicInteger(0);
59 private static Locker profilesLocker = new Locker();
60 private static RetrieveTransactionsTask retrieveTransactionsTask;
61 public static void backgroundTaskStarted() {
62 int cnt = backgroundTaskCount.incrementAndGet();
64 String.format(Locale.ENGLISH, "background task count is %d after incrementing",
66 backgroundTasksRunning.postValue(cnt > 0);
68 public static void backgroundTaskFinished() {
69 int cnt = backgroundTaskCount.decrementAndGet();
71 String.format(Locale.ENGLISH, "background task count is %d after decrementing",
73 backgroundTasksRunning.postValue(cnt > 0);
75 public static void setCurrentProfile(MobileLedgerProfile newProfile) {
76 MLDB.setOption(MLDB.OPT_PROFILE_UUID, (newProfile == null) ? null : newProfile.getUuid());
77 stopTransactionsRetrieval();
78 profile.postValue(newProfile);
80 public static int getProfileIndex(MobileLedgerProfile profile) {
81 try (LockHolder ignored = profilesLocker.lockForReading()) {
82 List<MobileLedgerProfile> prList = profiles.getValue();
84 throw new AssertionError();
85 for (int i = 0; i < prList.size(); i++) {
86 MobileLedgerProfile p = prList.get(i);
87 if (p.equals(profile))
94 @SuppressWarnings("WeakerAccess")
95 public static int getProfileIndex(String profileUUID) {
96 try (LockHolder ignored = profilesLocker.lockForReading()) {
97 List<MobileLedgerProfile> prList = profiles.getValue();
99 throw new AssertionError();
100 for (int i = 0; i < prList.size(); i++) {
101 MobileLedgerProfile p = prList.get(i);
103 .equals(profileUUID))
110 public static int retrieveCurrentThemeIdFromDb() {
111 String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
112 if (profileUUID == null)
115 SQLiteDatabase db = App.getDatabase();
116 try (Cursor c = db.rawQuery("SELECT theme from profiles where uuid=?",
117 new String[]{profileUUID}))
125 public static MobileLedgerProfile getProfile(String profileUUID) {
126 MobileLedgerProfile profile;
127 try (LockHolder readLock = profilesLocker.lockForReading()) {
128 List<MobileLedgerProfile> prList = profiles.getValue();
129 if ((prList == null) || prList.isEmpty()) {
131 try (LockHolder ignored = profilesLocker.lockForWriting()) {
132 profile = MobileLedgerProfile.loadAllFromDB(profileUUID);
136 int i = getProfileIndex(profileUUID);
139 profile = prList.get(i);
144 public synchronized static void scheduleTransactionListRetrieval(MainActivity activity) {
145 if (retrieveTransactionsTask != null) {
146 Logger.debug("db", "Ignoring request for transaction retrieval - already active");
149 MobileLedgerProfile pr = profile.getValue();
151 throw new IllegalStateException("No current profile");
153 retrieveTransactionsTask =
154 new RetrieveTransactionsTask(new WeakReference<>(activity), profile.getValue());
155 Logger.debug("db", "Created a background transaction retrieval task");
157 retrieveTransactionsTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
159 public static synchronized void stopTransactionsRetrieval() {
160 if (retrieveTransactionsTask != null)
161 retrieveTransactionsTask.cancel(false);
163 public static void transactionRetrievalDone() {
164 retrieveTransactionsTask = null;
166 public static void refreshCurrencyData(Locale locale) {
167 NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);
168 java.util.Currency currency = formatter.getCurrency();
169 String symbol = currency.getSymbol();
170 Logger.debug("locale", String.format(
171 "Discovering currency symbol position for locale %s (currency is %s; symbol is %s)",
172 locale.toString(), currency.toString(), symbol));
173 String formatted = formatter.format(1234.56f);
174 Logger.debug("locale", String.format("1234.56 formats as '%s'", formatted));
176 if (formatted.startsWith(symbol)) {
177 currencySymbolPosition.setValue(Currency.Position.before);
179 // is the currency symbol directly followed by the first formatted digit?
180 final char canary = formatted.charAt(symbol.length());
181 currencyGap.setValue(canary != '1');
183 else if (formatted.endsWith(symbol)) {
184 currencySymbolPosition.setValue(Currency.Position.after);
186 // is the currency symbol directly preceded bu the last formatted digit?
187 final char canary = formatted.charAt(formatted.length() - symbol.length() - 1);
188 currencyGap.setValue(canary != '6');
191 currencySymbolPosition.setValue(Currency.Position.none);