Issue 4399 - Add WebView inheritor with ad blocking

libadblockplus-android-webviewapp/src/org/adblockplus/libadblockplus/android/webviewapp/SettingsActivity.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.webviewapp;
+
+import android.os.Bundle;
+import android.preference.PreferenceActivity;
+import android.util.Log;
+
+import org.adblockplus.libadblockplus.android.AdblockEngine;
+import org.adblockplus.libadblockplus.android.settings.AdblockHelper;
+import org.adblockplus.libadblockplus.android.Utils;
+import org.adblockplus.libadblockplus.android.settings.GeneralSettingsFragment;
+import org.adblockplus.libadblockplus.android.settings.AdblockSettings;
+import org.adblockplus.libadblockplus.android.settings.BaseSettingsFragment;
+import org.adblockplus.libadblockplus.android.settings.AdblockSettingsStorage;
+import org.adblockplus.libadblockplus.android.settings.WhitelistedDomainsSettingsFragment;
+
+public class SettingsActivity
+  extends PreferenceActivity
+  implements
+    BaseSettingsFragment.Provider,
+    GeneralSettingsFragment.Listener,
+    WhitelistedDomainsSettingsFragment.Listener
+{
+  private static final String TAG = Utils.getTag(SettingsActivity.class);
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState)
+  {
+    super.onCreate(savedInstanceState);
+    AdblockHelper.get().retain(MainActivity.ADBLOCKENGINE_RETAIN_ASYNC);
+
+    insertGeneralFragment();
+  }
+
+  private void insertGeneralFragment()
+  {
+    getFragmentManager()
+      .beginTransaction()
+      .replace(
+        android.R.id.content,
+        GeneralSettingsFragment.newInstance())
+      .commit();
+  }
+
+  private void insertWhitelistedFragment()
+  {
+    getFragmentManager()
+      .beginTransaction()
+      .replace(
+        android.R.id.content,
+        WhitelistedDomainsSettingsFragment.newInstance())
+      .addToBackStack(WhitelistedDomainsSettingsFragment.class.getSimpleName())
+      .commit();
+  }
+
+  // provider
+
+  @Override
+  public AdblockEngine getAdblockEngine()
+  {
+    // if it's retained asynchronously we have to wait until it's ready
+    AdblockHelper.get().waitForReady();
+    return AdblockHelper.get().getEngine();
+  }
+
+  @Override
+  public AdblockSettingsStorage getAdblockSettingsStorage()
+  {
+    return AdblockHelper.get().getStorage();
+  }
+
+  // listener
+
+  @Override
+  public void onAdblockSettingsChanged(BaseSettingsFragment fragment)
+  {
+    Log.d(TAG, "AdblockHelper setting changed:\n" + fragment.getSettings().toString());
+  }
+
+  @Override
+  public void onWhitelistedDomainsClicked(GeneralSettingsFragment fragment)
+  {
+    insertWhitelistedFragment();
+  }
+
+  @Override
+  public boolean isValidDomain(WhitelistedDomainsSettingsFragment fragment,
+                               String domain,
+                               AdblockSettings settings)
+  {
+    // show error here if domain is invalid
+    return domain != null && domain.length() > 0;
+  }
+
+  @Override
+  protected void onDestroy()
+  {
+    super.onDestroy();
+    AdblockHelper.get().release();
+  }
+}