try to fix problem with vcard mutable references

1 files changed, 38 insertions, 5 deletions

diff --git a/src/view/mod.rs b/src/view/mod.rs
index b47612a..f208c44 100644
--- a/src/view/mod.rs
+++ b/src/view/mod.rs
@@ -1,4 +1,7 @@
 use yew::prelude::*;
+use std::cell::RefCell;
+use std::ops::Deref;
+use std::rc::Rc;
 use crate::viewmodel::*;
 
 pub mod main;
@@ -12,20 +15,50 @@ pub trait VCardPropertyInputComponent<P, T>: Component
 {
     fn get_input_object(&self) -> T;
     fn get_title(&self) -> String;
-    fn get_errors(&self) -> Vec<String>;
-    fn render_errors(&self) -> Html {
+    fn get_error(&self) -> Option<Error>;
+    fn render_error(&self) -> Html {
         html!{
             <>
                 {
-                    for self.get_errors().iter().map(|err| 
+                    if self.get_error().is_some() {
                         html!{
                             <div class="notification is-danger is-light">
-                                { err }
+                                { self.get_error().unwrap().msg }
                             </div>
                         }
-                    ) 
+                    } else {
+                        html!{}
+                    }
                 }
             </>
         }
     }
+}
+
+pub struct WeakComponentLink<COMP: Component>(Rc<RefCell<Option<ComponentLink<COMP>>>>);
+
+impl<COMP: Component> Clone for WeakComponentLink<COMP> {
+    fn clone(&self) -> Self {
+        Self(Rc::clone(&self.0))
+    }
+}
+
+impl<COMP: Component> Default for WeakComponentLink<COMP> {
+    fn default() -> Self {
+        Self(Rc::default())
+    }
+}
+
+impl<COMP: Component> Deref for WeakComponentLink<COMP> {
+    type Target = Rc<RefCell<Option<ComponentLink<COMP>>>>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl<COMP: Component> PartialEq for WeakComponentLink<COMP> {
+    fn eq(&self, other: &Self) -> bool {
+        Rc::ptr_eq(&self.0, &other.0)
+    }
 }
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