Issue 3916 - Supporting Adding filter lists via URL

adblockplussbrowser/src/org/adblockplus/sbrowser/contentblocker/engine/Engine.java

Index: adblockplussbrowser/src/org/adblockplus/sbrowser/contentblocker/engine/Engine.java
===================================================================
--- a/adblockplussbrowser/src/org/adblockplus/sbrowser/contentblocker/engine/Engine.java
+++ b/adblockplussbrowser/src/org/adblockplus/sbrowser/contentblocker/engine/Engine.java
@@ -69,16 +69,18 @@ public final class Engine
 
   public static final String SBROWSER_APP_ID = "com.sec.android.app.sbrowser";
   public static final String EASYLIST_URL = "https://easylist-downloads.adblockplus.org/easylist.txt";
   private static final String ACTION_OPEN_SETTINGS = "com.samsung.android.sbrowser.contentBlocker.ACTION_SETTING";
   private static final String ACTION_UPDATE = "com.samsung.android.sbrowser.contentBlocker.ACTION_UPDATE";
 
   public static final String SUBSCRIPTIONS_EXCEPTIONSURL = "subscriptions_exceptionsurl";
 
+  public static final HashMap<String, Integer> URL_TO_RES_ID_MAP = new HashMap<>();

[diegocarloslima, 2017/09/22 17:43:42]

I know that I asked you in the last code review to move this Hash here, but
giving a second look at the code review, I think that it would be better if we
move this back to MoreBlockingPreferenceCategory, along with the
getMoreBlockingPreferencesSubscriptions() method. I feel that the Engine class
is getting way too big and that logic is currently only relevant for the
MoreBlockingPreferenceCategory. What do you think? 

[jens, 2017/09/26 10:25:02]

Acknowledged.

+
   // The value below specifies an interval of [x, 2*x[, where x =
   // INITIAL_UPDATE_CHECK_DELAY
   private static final long INITIAL_UPDATE_CHECK_DELAY = 5 * DateUtils.SECOND_IN_MILLIS;
   private static final long UPDATE_CHECK_INTERVAL = 30 * DateUtils.MINUTE_IN_MILLIS;
   private static final long BROADCAST_COMBINATION_DELAY = 2500;
 
   private static final int NO_FLAG = 0;
   private static final int OLDEST_SAMSUNG_INTERNET_5_VERSIONCODE = 500000000;
@@ -251,16 +253,31 @@ public final class Engine
   public void subscriptionStateChanged()
   {
     if (this.subscriptionUpdateCallback != null)
     {
       subscriptionUpdateCallback.subscriptionUpdatedApplied();
     }
   }
 
+  public void createAndAddSubscriptionFromUrl(final String url, final SubscriptionAddedCallback callback) throws IOException
+  {
+    final Subscription sub = Subscription.create(url);
+    sub.putMeta(Subscription.KEY_TITLE, url);
+    sub.setEnabled(true);
+    subscriptions.add(sub);
+    subscriptions.persistSubscription(sub);
+    callback.subscriptionAdded();
+  }
+
+  public void removeSubscriptionById(final String subscriptionId)
+  {
+    subscriptions.remove(subscriptionId);
+  }
+
   void downloadFinished(final String id, final int responseCode, final String response,
       final Map<String, String> headers)
   {
     this.engineEvents.add(new DownloadFinishedEvent(id, responseCode, response, headers));
   }
 
   private void createAndWriteFile()
   {
@@ -606,16 +623,50 @@ public final class Engine
     else
     {
       sb.append("4%2B"); // "4+" URL encoded
     }
 
     return new URL(sb.toString());
   }
 
+  public List<SubscriptionInfo> getMoreBlockingPreferenceSubscriptions()

[diegocarloslima, 2017/09/22 17:43:43]

Please read my comment above regarding moving this to
MoreBlockingPreferenceCategory

[jens, 2017/09/26 10:25:02]

Acknowledged.

+  {
+    List<SubscriptionInfo> moreBlockingPreferenceSubscriptions = new ArrayList<>(5);
+    for (SubscriptionInfo sub : getListedSubscriptions())
+    {
+      final DefaultSubscriptionInfo info = getDefaultSubscriptionInfoForUrl(sub.getUrl());
+      Integer resInt = URL_TO_RES_ID_MAP.get(sub.getUrl());
+
+      if (sub.getType() == SubscriptionInfo.Type.CUSTOM)
+      {
+        moreBlockingPreferenceSubscriptions.add(sub);
+      }
+
+      if (info != null && !info.isComplete() && sub.isEnabled())
+      {
+        moreBlockingPreferenceSubscriptions.add(sub);
+      }
+
+      if ((!(isAcceptableAdsUrl(sub)) || sub.getTitle().startsWith("__"))
+          && resInt != null
+          && (info == null || info.getPrefixes().isEmpty() || sub.getType() != SubscriptionInfo.Type.ADS))
+      {
+        moreBlockingPreferenceSubscriptions.add(sub);
+      }
+    }
+
+    return moreBlockingPreferenceSubscriptions;
+  }
+
+  private boolean isAcceptableAdsUrl(final SubscriptionInfo subscriptionInfo)

[diegocarloslima, 2017/09/22 17:43:43]

If we move the method above, we should make this public

[jens, 2017/09/26 10:25:02]

Acknowledged.

+  {
+    return getPrefsDefault(SUBSCRIPTIONS_EXCEPTIONSURL).equals(subscriptionInfo.getUrl());
+  }
+
   private static class EventHandler implements Runnable
   {
     private static final String TAG = EventHandler.class.getSimpleName();
     private final Engine engine;
 
     public EventHandler(final Engine engine)
     {
       this.engine = engine;
@@ -782,9 +833,14 @@ public final class Engine
     this.downloader.connectivityChanged();
   }
 
   public interface SubscriptionUpdateCallback
   {
     void subscriptionUpdateRequested(boolean enabled);
     void subscriptionUpdatedApplied();
   }
+
+  public interface SubscriptionAddedCallback
+  {
+    void subscriptionAdded();
+  }
 }