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use std::collections::HashMap;
use wasm_bindgen::{closure::Closure, JsCast, JsValue};
fn make_window() -> web_sys::Window {
web_sys::window().expect("Can't find the global Window.")
}
pub fn initial<Ms, Mdl>(app: crate::vdom::App<Ms, Mdl>, routes: HashMap<&str, Ms>) -> crate::vdom::App<Ms, Mdl>
where Ms: Clone + Sized + 'static, Mdl: Clone + Sized + 'static
{
let path = make_window().location().pathname().expect("Can't find pathname");
for (route, route_message) in routes.into_iter() {
if route == &path {
app.update_dom(route_message);
break;
}
}
app
}
pub fn update_popstate_listener<Ms, Mdl>(app: crate::vdom::App<Ms, Mdl>, routes: HashMap<&str, Ms>)
where Ms: Clone + Sized + 'static, Mdl: Clone + Sized + 'static
{
let window = make_window();
if let Some(ps_closure) = app.data.popstate_closure.borrow().as_ref() {
(window.as_ref() as &web_sys::EventTarget)
.remove_event_listener_with_callback("popstate", ps_closure.as_ref().unchecked_ref())
.expect("Problem removing old popstate listener");
}
let mut routes_owned = HashMap::new();
for (route, msg) in routes {
routes_owned.insert(route.to_string(), msg);
}
let app_for_closure = app.clone();
let closure = Closure::wrap(
Box::new(move |event: web_sys::Event| {
let path = make_window().location().pathname().expect("Can't find pathname");
let path_trimmed = &path[1..path.len()].to_string();
if let Some(route_message) = routes_owned.get(path_trimmed) {
app_for_closure.update_dom(route_message.clone());
}
})
as Box<FnMut(web_sys::Event) + 'static>,
);
(window.as_ref() as &web_sys::EventTarget)
.add_event_listener_with_callback("popstate", closure.as_ref().unchecked_ref())
.expect("Problem adding popstate listener");
app.data.popstate_closure.replace(Some(closure));
}
pub fn push(path: &str) {
let history = make_window().history().expect("Can't find history");
let path = &(String::from("/") + path);
history.push_state_with_url(&JsValue::null(), "", Some(path))
.expect("Problem pushing state");
}