1 files changed, 119 insertions, 0 deletions
diff --git a/src/com/android/launcher3/lineage/hidden/db/HiddenDatabaseHelper.java b/src/com/android/launcher3/lineage/hidden/db/HiddenDatabaseHelper.java
new file mode 100644
index 000000000..bfc4dfa30
--- /dev/null
+++ b/src/com/android/launcher3/lineage/hidden/db/HiddenDatabaseHelper.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2019 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.lineage.hidden.db;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+
+public class HiddenDatabaseHelper extends SQLiteOpenHelper {
+    private static final int DATABASE_VERSION = 1;
+    private static final String DATABSE_NAME = "hidden_apps_db";
+
+    private static final String TABLE_NAME = "hidden_apps";
+    private static final String KEY_UID = "uid";
+    private static final String KEY_PKGNAME = "pkgname";
+
+    @Nullable
+    private static HiddenDatabaseHelper sSingleton;
+
+    private HiddenDatabaseHelper(@NonNull Context context) {
+        super(context, DATABSE_NAME, null, DATABASE_VERSION);
+    }
+
+    public static synchronized HiddenDatabaseHelper getInstance(@NonNull Context context) {
+        if (sSingleton == null) {
+            sSingleton = new HiddenDatabaseHelper(context);
+        }
+
+        return sSingleton;
+    }
+
+    @Override
+    public void onCreate(SQLiteDatabase db) {
+        String CMD_CREATE_TABLE = "CREATE TABLE " + TABLE_NAME +
+                "(" +
+                    KEY_UID + " INTEGER PRIMARY KEY AUTOINCREMENT," +
+                    KEY_PKGNAME + " TEXT" +
+                ")";
+        db.execSQL(CMD_CREATE_TABLE);
+    }
+
+    @Override
+    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+    }
+
+    public void addApp(@NonNull String packageName) {
+        if (isPackageHidden(packageName)) {
+            return;
+        }
+
+        SQLiteDatabase db = getWritableDatabase();
+        db.beginTransaction();
+
+        try {
+            ContentValues values = new ContentValues();
+            values.put(KEY_PKGNAME, packageName);
+
+            db.insertOrThrow(TABLE_NAME, null, values);
+            db.setTransactionSuccessful();
+        } catch (Exception e) {
+            // Ignored
+        } finally {
+            db.endTransaction();
+        }
+    }
+
+    public void removeApp(@NonNull String packageName) {
+        if (!isPackageHidden(packageName)) {
+            return;
+        }
+
+        SQLiteDatabase db = getWritableDatabase();
+        db.beginTransaction();
+
+        try {
+            db.delete(TABLE_NAME, KEY_PKGNAME + "=?", new String[]{packageName});
+            db.setTransactionSuccessful();
+        } catch (Exception e) {
+            // Ignored
+        } finally {
+            db.endTransaction();
+        }
+    }
+
+    public boolean isPackageHidden(@NonNull String packageName) {
+        String query = String.format("SELECT * FROM %s WHERE %s = ?", TABLE_NAME, KEY_PKGNAME);
+        SQLiteDatabase db = getReadableDatabase();
+        Cursor cursor = db.rawQuery(query, new String[]{packageName});
+        boolean result = false;
+        try {
+            result = cursor.getCount() != 0;
+        } catch (Exception e) {
+            // Ignored
+        } finally {
+            if (cursor != null && !cursor.isClosed()) {
+                cursor.close();
+            }
+        }
+
+        return result;
+    }
+}