Issue 4399 - Add WebView inheritor with ad blocking

libadblockplus-android-settings/src/org/adblockplus/libadblockplus/android/settings/AdblockSettingsStorage.java

+/*
+ * This file is part of Adblock Plus <https://adblockplus.org/>,
+ * Copyright (C) 2006-2016 Eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus 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 for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.adblockplus.libadblockplus.android.settings;
+
+import org.adblockplus.libadblockplus.android.AdblockEngine;
+import org.adblockplus.libadblockplus.android.Subscription;
+
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ * Settings storage base class
+ */
+public abstract class AdblockSettingsStorage
+{
+  /**
+   * Load settings from the storage
+   *
+   * Warning: can return null if not saved yet
+   * Warning: subscriptions can have `url` and `title` only to be identified among available in AdblockEngine
+   * @return AdblockSettings instance or null
+   */
+  public abstract AdblockSettings load();
+
+  /**
+   * Save settings to the storage
+   *
+   * @param settings should be not null
+   */
+  public abstract void save(AdblockSettings settings);
+
+  /**
+   * Get default settings
+   *
+   * @param adblockEngine adblock engine
+   * @return not null default settings
+   */
+  public static AdblockSettings getDefaultSettings(AdblockEngine adblockEngine)
+  {
+    AdblockSettings settings = new AdblockSettings();
+
+    // read actual values from adblock engine
+    settings.setAdblockEnabled(adblockEngine.isEnabled());
+    settings.setAcceptableAdsEnabled(adblockEngine.isAcceptableAdsEnabled());
+
+    // we need to filter out exceptions subscription to show languages subscriptions only
+    Subscription[] listedSubscriptions = adblockEngine.getListedSubscriptions();
+    List<Subscription> subscriptionsWithoutAA = new LinkedList<Subscription>();
+    String acceptableAdsURL = adblockEngine.getAcceptableAdsSubscriptionURL();
+
+    for (Subscription eachListedSubscription : listedSubscriptions)
+    {
+      if (!eachListedSubscription.url.equals(acceptableAdsURL))
+      {
+        subscriptionsWithoutAA.add(eachListedSubscription);
+      }
+    }
+
+    settings.setSubscriptions(subscriptionsWithoutAA);
+
+    return settings;
+  }
+}