Add ungrouped filter

app/src/main/java/com/beemdevelopment/aegis/ui/MainActivity.java

@@ -333,6 +333,10 @@ public class MainActivity extends AegisActivity implements EntryListView.Listene
             }
         }
 
+        if (groups.size() > 0) {
+            menu.add(R.id.action_filter_group, Menu.NONE, 10, R.string.filter_ungrouped);
+        }
+
         menu.setGroupCheckable(R.id.action_filter_group, true, true);
     }
 

app/src/main/java/com/beemdevelopment/aegis/ui/views/EntryAdapter.java

@@ -4,6 +4,7 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
+import com.beemdevelopment.aegis.R;
 import com.beemdevelopment.aegis.SortCategory;
 import com.beemdevelopment.aegis.ViewMode;
 import com.beemdevelopment.aegis.db.DatabaseEntry;
@@ -158,8 +159,14 @@ public class EntryAdapter extends RecyclerView.Adapter<EntryHolder> implements I
         String issuer = entry.getIssuer().toLowerCase();
         String name = entry.getName().toLowerCase();
 
-        if (_groupFilter != null && (group == null || !group.equals(_groupFilter))) {
-            return true;
+        if (_groupFilter != null) {
+            if (group == null && _groupFilter.equals(_view.getContext().getString(R.string.filter_ungrouped))) {
+                return false;
+            }
+
+            if (group == null || !group.equals(_groupFilter)) {
+                return true;
+            }
         }
 
         if (_searchFilter == null) {

app/src/main/res/values/strings.xml

@@ -143,6 +143,7 @@
     <string name="progressbar_error">Unable to reset animator duration scale. Progress bars will be invisible.</string>
     <string name="details">Details</string>
     <string name="filter">Filter</string>
+    <string name="filter_ungrouped">Ungrouped</string>
     <string name="lock">Lock</string>
     <string name="all">All</string>
     <string name="name">Name</string>