move DB access routines to the application class

[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / App.java

diff --git a/app/src/main/java/net/ktnx/mobileledger/App.java b/app/src/main/java/net/ktnx/mobileledger/App.java
new file mode 100644 (file)
index 0000000..051a17c
--- /dev/null
+++ b/app/src/main/java/net/ktnx/mobileledger/App.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright © 2019 Damyan Ivanov.
+ * This file is part of MoLe.
+ * MoLe is free software: you can distribute it and/or modify it
+ * under the term of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your opinion), any later version.
+ *
+ * MoLe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License terms for details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.ktnx.mobileledger;
+
+import android.app.Application;
+import android.content.SharedPreferences;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.database.sqlite.SQLiteDatabase;
+import android.preference.PreferenceManager;
+
+import net.ktnx.mobileledger.model.Data;
+import net.ktnx.mobileledger.utils.Globals;
+import net.ktnx.mobileledger.utils.MobileLedgerDatabase;
+
+import static net.ktnx.mobileledger.ui.activity.SettingsActivity.PREF_KEY_SHOW_ONLY_STARRED_ACCOUNTS;
+
+public class App extends Application {
+    public static App instance;
+    private MobileLedgerDatabase dbHelper;
+    @Override
+    public void onCreate() {
+        instance = this;
+        super.onCreate();
+        updateMonthNames();
+        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(this);
+        Data.optShowOnlyStarred.set(p.getBoolean(PREF_KEY_SHOW_ONLY_STARRED_ACCOUNTS, false));
+        SharedPreferences.OnSharedPreferenceChangeListener handler =
+                (preference, value) -> Data.optShowOnlyStarred
+                        .set(preference.getBoolean(PREF_KEY_SHOW_ONLY_STARRED_ACCOUNTS, false));
+        p.registerOnSharedPreferenceChangeListener(handler);
+    }
+    private void updateMonthNames() {
+        Resources rm = getResources();
+        Globals.monthNames = rm.getStringArray(R.array.month_names);
+    }
+    @Override
+    public void onTerminate() {
+        if (dbHelper != null) dbHelper.close();
+        super.onTerminate();
+    }
+    @Override
+    public void onConfigurationChanged(Configuration newConfig) {
+        super.onConfigurationChanged(newConfig);
+        updateMonthNames();
+    }
+    public static SQLiteDatabase getDatabase() {
+        if (instance == null) throw new RuntimeException("Application not created yet");
+
+        return instance.getDB();
+    }
+    public SQLiteDatabase getDB() {
+        if (dbHelper == null) initDb();
+
+        final SQLiteDatabase db = dbHelper.getWritableDatabase();
+        db.execSQL("pragma case_sensitive_like=ON;");
+
+        return db;
+    }
+    private synchronized void initDb() {
+        if (dbHelper != null) return;
+
+        dbHelper = new MobileLedgerDatabase(this);
+    }
+}