1 files changed, 10 insertions, 0 deletions
diff --git a/src/main/scala/reading/models/FilterFactory.scala b/src/main/scala/reading/models/FilterFactory.scala
index 269af82..c7b9fbf 100644
--- a/src/main/scala/reading/models/FilterFactory.scala
+++ b/src/main/scala/reading/models/FilterFactory.scala
@@ -15,6 +15,16 @@ object FilterFactory {
       }
   }
 
+  implicit object GroupedTheme extends FilterFactory[GroupedTheme] {
+    def create(groupedTheme: GroupedTheme): Filter =
+      new Filter {
+        def filter(book: Book): Boolean = book.themes.map(Theme.groupedTheme).contains(groupedTheme)
+        val kind: FilterKind = FilterKind.GroupedTheme
+        val nonFormattedName: String = groupedTheme.toString()
+        val name: String = groupedTheme.prettyPrint()
+      }
+  }
+
   implicit object ThemeFilter extends FilterFactory[Theme] {
     def create(theme: Theme): Filter =
       new Filter {