use std::marker::PhantomData;
use rooting::{
El,
el,
};
use wasm_bindgen::JsCast;
use web_sys::HtmlInputElement;
use crate::{
css::{
ATTR_LABEL,
CSS_CLASS_HIDDEN,
CSS_CLASS_OPTION_ENABLE,
},
FormElements,
FormState,
FormWith,
};
struct OptionFormState<C, T> {
checked_el: El,
subform: Box<dyn FormState<T>>,
_pd: PhantomData<C>,
}
impl<C, T: FormWith<C>> FormState<Option<T>> for OptionFormState<C, T> {
fn parse(&self) -> Result<Option<T>, ()> {
let checked = self.checked_el.raw().dyn_ref::<HtmlInputElement>().unwrap().checked();
if checked {
return Ok(Some(self.subform.parse()?));
} else {
return Ok(None);
}
}
}
impl<C: 'static, T: FormWith<C> + 'static> FormWith<C> for Option<T> {
fn new_form_with_(
context: &C,
field: &str,
from: Option<&Self>,
depth: usize,
) -> (FormElements, Box<dyn FormState<Self>>) {
let (subform_elements, subform) = T::new_form_with_(context, field, from.and_then(|x| x.as_ref()), depth);
let mut additional = vec![];
additional.extend(subform_elements.error.iter().cloned());
additional.extend(subform_elements.elements);
let check = el("input")
.classes(&[CSS_CLASS_OPTION_ENABLE])
.attr(ATTR_LABEL, &format!("{} - Enabled", field))
.attr("type", "checkbox")
.on("click", {
let additional = additional.clone();
move |ev| {
let checked = ev.target().unwrap().dyn_ref::<HtmlInputElement>().unwrap().checked();
for e in &additional {
e.ref_modify_classes(&[(CSS_CLASS_HIDDEN, checked)]);
}
}
});
if from.map(|x| x.is_some()).unwrap_or(false) {
check.ref_attr("checked", "checked");
} else {
for e in &additional {
e.ref_modify_classes(&[(CSS_CLASS_HIDDEN, true)]);
}
}
let mut elements = vec![check.clone()];
elements.extend(additional);
return (FormElements {
error: None,
elements: elements,
}, Box::new(OptionFormState {
checked_el: check,
subform: subform,
_pd: Default::default(),
}));
}
}