Issue 6066 - Implement 'force update' functionality for subscriptions

adblockplussbrowser/src/main/java/org/adblockplus/sbrowser/contentblocker/MainPreferences.java

Index: adblockplussbrowser/src/main/java/org/adblockplus/sbrowser/contentblocker/MainPreferences.java
===================================================================
--- a/adblockplussbrowser/src/main/java/org/adblockplus/sbrowser/contentblocker/MainPreferences.java
+++ b/adblockplussbrowser/src/main/java/org/adblockplus/sbrowser/contentblocker/MainPreferences.java
@@ -15,51 +15,54 @@
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package org.adblockplus.sbrowser.contentblocker;
 
 import org.adblockplus.sbrowser.contentblocker.engine.Engine;
 import org.adblockplus.sbrowser.contentblocker.engine.EngineService;
 import org.adblockplus.adblockplussbrowser.R;
+import org.adblockplus.sbrowser.contentblocker.util.ConnectivityUtils;
 import org.adblockplus.sbrowser.contentblocker.util.SharedPrefsUtils;
 
 import android.app.AlertDialog;
+import android.app.Fragment;
 import android.app.ProgressDialog;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
+import android.preference.Preference;
 import android.preference.PreferenceActivity;
 import android.preference.PreferenceManager;
 import android.text.Html;
 import android.util.Log;
 import android.view.Gravity;
 import android.widget.Button;
 import android.widget.LinearLayout;
 
 public class MainPreferences extends PreferenceActivity implements
     EngineService.OnEngineCreatedCallback, SharedPrefsUtils.OnSharedPreferenceChangeListener,
-    Engine.SubscriptionUpdateCallback
+    Engine.SubscriptionUpdateCallback, Preference.OnPreferenceClickListener
 {
   private static final String TAG = MainPreferences.class.getSimpleName();
   private Engine engine = null;
   private AlertDialog dialog;
   private int dialogTitleResId;
 
   @Override
   public void onCreate(Bundle savedInstanceState)
   {
     super.onCreate(savedInstanceState);
     PreferenceManager.setDefaultValues(this, R.xml.preferences_main, false);
 
     this.getFragmentManager()
         .beginTransaction()
-        .replace(android.R.id.content, new Preferences())
+        .replace(android.R.id.content, new Preferences(), Preferences.class.getSimpleName())
         .commit();
   }
 
   @Override
   protected void onStart()
   {
     this.dialogTitleResId = R.string.initialization_title;
     this.dialog = ProgressDialog.show(this,
@@ -194,16 +197,20 @@ public class MainPreferences extends Pre
     }
 
     if (this.dialogTitleResId == R.string.initialization_title)
     {
       this.dismissDialog();
 
       this.checkForCompatibleSBrowserAndProceed();
     }
+
+    Fragment preferecesFragment = getFragmentManager().findFragmentByTag(Preferences.class.getSimpleName());
+    Preference button = ((Preferences) preferecesFragment).findPreference(getString(R.string.key_force_update_subscriptions));
+    button.setOnPreferenceClickListener(this);
   }
 
   @Override
   public void onSharedPreferenceChanged(String key)
   {
     if (this.getString(R.string.key_automatic_updates).equals(key) && this.engine != null)
     {
       this.engine.connectivityChanged();
@@ -232,9 +239,56 @@ public class MainPreferences extends Pre
         : getString(R.string.remove_subscription_dialog_message));
   }
 
   @Override
   public void subscriptionUpdatedApplied()
   {
     this.dismissDialog();
   }
+
+  @Override
+  public boolean onPreferenceClick(Preference preference)
+  {
+    if (getString(R.string.key_force_update_subscriptions).equals(preference.getKey()))
+    {
+      if (ConnectivityUtils.hasNonMeteredConnection(this))
+      {
+        engine.forceUpdateSubscriptions(false);
+      }
+      else
+      {
+        boolean meteredInternetAvailable = ConnectivityUtils.canUseInternet(this, true);
+        this.dialog = new AlertDialog.Builder(this)
+            .setTitle(R.string.update_subscriptions)
+            .setMessage(
+                meteredInternetAvailable
+                ? R.string.metered_connection_warning
+                : R.string.check_your_connection)
+            .setNegativeButton(android.R.string.cancel, new OnClickListener()
+            {
+              @Override
+              public void onClick(DialogInterface dialog, int which)
+              {
+                dialog.cancel();
+              }
+            })
+            .create();
+
+        if (meteredInternetAvailable)
+        {
+          this.dialog.setButton(DialogInterface.BUTTON_POSITIVE, getString(android.R.string.yes),
+              new OnClickListener()
+              {
+                @Override
+                public void onClick(DialogInterface dialogInterface, int i)
+                {
+                  engine.forceUpdateSubscriptions(true);
+                }
+              });
+        }
+        this.dialog.show();
+      }
+      return true;
+    }
+    return false;
+  }
 }