before removing VanityControl and Control

src/form.rs

@@ -5,11 +5,16 @@ use crate::{
     },
     styles::FormStyle,
 };
-use leptos::{IntoView, View};
-use std::marker::PhantomData;
+use leptos::{
+    create_effect, create_signal, IntoView, ReadSignal, SignalGet, SignalSet, SignalUpdate, View,
+    WriteSignal,
+};
+
+pub struct Form {}
 
 pub struct FormBuilder<FD: FormData, FS: FormStyle> {
-    _fd: PhantomData<FD>,
+    fd_get: ReadSignal<FD>,
+    fd_set: WriteSignal<FD>,
     fs: FS,
     validations: Vec<Box<ValidationFn<FD>>>,
     views: Vec<View>,
@@ -17,8 +22,10 @@ pub struct FormBuilder<FD: FormData, FS: FormStyle> {
 
 impl<FD: FormData, FS: FormStyle> FormBuilder<FD, FS> {
     pub fn new(form_style: FS) -> FormBuilder<FD, FS> {
+        let (fs_get, fs_set) = create_signal(FD::default());
         FormBuilder {
-            _fd: PhantomData::default(),
+            fd_get,
+            fd_set,
             fs: form_style,
             validations: Vec::new(),
             views: Vec::new(),
@@ -51,7 +58,26 @@ impl<FD: FormData, FS: FormStyle> FormBuilder<FD, FS> {
     }
 
     fn add_control<C: ControlData>(&mut self, control: Control<FD, FS, C>) {
-        let view = ControlData::build_control(&self.fs, control);
+        let (validation_signal, validation_signal_set) = create_signal(Ok(()));
+        let (view, control_value) = ControlData::build_control(&self.fs, control);
+        // TODO: add a signal that triggers on submit to refresh the validation on_submit
+        // TODO: we might want a way to see if this is the first time this ran, which would
+        //       prevent the form's validation to pop up before the user typed anything in
+        // TODO: add validation here that run on the input changing, and writes
+        // it to the fd signals
+        create_effect(move |last_value| {
+            let control_value = control_value.get();
+            let mut validation_result;
+            self.fd_set.update(|v| {
+                validation_result =
+                    (control.parse_fn)(control_value, v).and_then(|_| (*control.validation)(v));
+            });
+            // TODO: or this happened on a submit
+            if Some(validation_result) != last_value {
+                validation_signal_set.set(validation_result);
+            }
+            validation_result
+        });
         self.views.push(view);
     }
 
@@ -62,7 +88,7 @@ impl<FD: FormData, FS: FormStyle> FormBuilder<FD, FS> {
     }
 }
 
-pub trait FormData: Default {
+pub trait FormData: Default + Clone + 'static {
     // TODO: this should return a Form Object
     fn create_form() -> View;
 }