1 files changed, 5 insertions, 4 deletions
diff --git a/src/viewmodel/mod.rs b/src/viewmodel/mod.rs
index 42ad77b..9dce01c 100644
--- a/src/viewmodel/mod.rs
+++ b/src/viewmodel/mod.rs
@@ -23,12 +23,13 @@ pub trait VCardPropertyInputObject<P: properties::Property, C: VCardPropertyInpu
             </div>
         }
     }
-    fn to_vcard_property(&self) -> Result<P, VCardPropertyInputError>;
+    fn is_empty(&self) -> bool;
+    fn to_vcard_property(&self) -> Result<P, Error>;
 }
 
-#[derive(Debug)]
-pub struct VCardPropertyInputError {
-    msg: String,
+#[derive(Debug,Clone,PartialEq)]
+pub struct Error {
+    pub msg: String,
 }
 
 pub enum VCardPropertyInputField {