Usage of new API, cleanups (reduced)

src/org/adblockplus/android/AndroidUpdateAvailableCallback.java

Index: src/org/adblockplus/android/AndroidUpdateAvailableCallback.java
diff --git a/src/org/adblockplus/android/AndroidUpdateAvailableCallback.java b/src/org/adblockplus/android/AndroidUpdateAvailableCallback.java
new file mode 100644
index 0000000000000000000000000000000000000000..8b8936fe2293eba3990bc900150c1f091f8dbf16
--- /dev/null
+++ b/src/org/adblockplus/android/AndroidUpdateAvailableCallback.java
@@ -0,0 +1,51 @@
+/*
+ * This file is part of Adblock Plus <http://adblockplus.org/>,
+ * Copyright (C) 2006-2014 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.android;
+
+import java.util.List;
+
+import org.adblockplus.libadblockplus.EventCallback;
+import org.adblockplus.libadblockplus.JsValue;
+
+import com.github.rjeschke.neetutils.Strings;
+
+import android.app.Notification;
+import android.app.NotificationManager;
+import android.content.Context;
+
+public class AndroidUpdateAvailableCallback extends EventCallback
+{
+  private final Context context;
+
+  public AndroidUpdateAvailableCallback(final Context context)
+  {
+    this.context = context;
+  }
+
+  @Override
+  public void eventCallback(final List<JsValue> params)
+  {
+    final String updateUrl = params.size() > 0 && !params.get(0).isNull() ? params.get(0).toString() : "";
+    if (!Strings.isEmpty(updateUrl))
+    {
+      final Notification notification = Utils.createUpdateNotification(this.context, updateUrl, null);
+      final NotificationManager notificationManager = (NotificationManager)this.context.getSystemService(Context.NOTIFICATION_SERVICE);
+      notificationManager.notify(AdblockPlus.UPDATE_NOTIFICATION_ID, notification);
+    }
+  }
+}