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#[macro_use]
pub mod effect;
pub mod spec;
pub mod instances;
pub mod shell;
use std::collections::*;
use std::rc::*;
use std::any::*;
use std::cell::*;
use wasm_bindgen::prelude::*;
use crate::backend::browser;
use crate::backend::browser::{NodeApi, ElementApi, CallbackSettings, QueueCallback, VoidCallback};
use crate::view_sys::dsl::View;
use crate::program_sys::spec::*;
use crate::program_sys::instances::*;
use crate::view_sys::shared::*;
use crate::program_sys::shell::*;
pub use crate::program_sys::effect::nav::{Url};
#[wasm_bindgen]
pub fn on_request_animation_frame() {
ROOT_PROCESS.with(|cell| {
let inner: Option<Box<ProgramImpl>> = cell.replace(None);
if let Some(mut process) = inner {
process.tick();
assert!(cell.replace(Some(process)).is_none());
}
});
}
thread_local! {
pub(crate) static CURRENT_URL: RefCell<Option<Url>> = {
RefCell::new(None)
};
}
fn init_url_callback() {
let callback_settings = browser::CallbackSettings{
prevent_default: true,
..browser::CallbackSettings::default()
};
let callback = browser::VoidCallback::new_with_fn_unset(callback_settings, move |_| {
CURRENT_URL.with(|cell| {
let new_url: Url = Url::get_current(&browser::window());
cell.replace(Some(new_url));
});
});
browser::window().add_event_listener("popstate", &callback);
std::mem::forget(callback);
}
thread_local! {
pub(crate) static ROOT_PROCESS: RefCell<Option<Box<ProgramImpl>>> = {
RefCell::new(None)
};
}
pub(crate) trait ProgramImpl {
fn tick(&mut self);
}
impl ProgramImpl for Program {
fn tick(&mut self) {
let url_state: Option<Url> = CURRENT_URL.with(|url| {
url.borrow().clone()
});
let url_state: Url = if let Some(url_state) = url_state {
url_state
} else {
self.url.clone()
};
let url_unchanged = &self.url == &url_state;
let mut messages: Vec<SystemMessage> = GLOABL_MESSAGE_REGISTRY.with(|reg| {
reg.borrow_mut().drain(..).collect::<Vec<SystemMessage>>()
});
if !url_unchanged {
CURRENT_URL.with(|cell| {
let new_url = Url::get_current(&browser::window());
cell.replace(Some(new_url));
});
messages.push({
let value: Rc<UrlChanged> = Rc::new(UrlChanged(url_state.clone()));
SystemMessage::Public {
from_name: String::from(""),
from_tid: TypeId::of::<Program>(),
value,
}
});
self.url = url_state;
};
self.process.0.tick(&messages);
}
}
pub struct Program {
url: Url,
process: SubProcess,
}
impl Program {
pub fn run_basic<Model, Msg>(
init: impl Fn(Option<Model>)-> Model + 'static,
update: impl Fn(&mut Model, Msg) + 'static,
view: impl Fn(&Model) -> View<Msg> + 'static,
) where
Model: 'static,
Msg: 'static,
{
Program::run_spec(SimpleApp {
init: Rc::new(init),
update: Rc::new(update),
view: Rc::new(view),
})
}
pub fn run_spec(spec: impl Spec + 'static) {
let window = browser::window();
let root_component = Component {
name: String::from("Root Component"),
spec,
};
let process = root_component.build_impl(true);
browser::window().document.body.append_child(&process.dom_ref());
let process = SubProcess(Box::new(process));
let program: Program = Program{
url: Url::get_current(&window),
process,
};
ROOT_PROCESS.with(move |cell| {
let old = cell.replace(Some(Box::new(program)));
assert!(old.is_none());
});
}
}
pub(crate) struct SimpleApp<Model, Msg> {
init: Rc<Fn(Option<Model>)-> Model>,
update: Rc<Fn(&mut Model, Msg)>,
view: Rc<Fn(&Model) -> View<Msg>>,
}
impl<Model, Msg> Spec for SimpleApp<Model, Msg> {
type Msg = Msg;
type Model = Model;
fn init(&self, sh: &Shell<Self>) -> Init<Self> {
let inner = (self.init)(None);
Init {
model: inner,
subs: Subscriptions::default(),
}
}
fn update(&self, model: &mut Self::Model, msg: Self::Msg, sys: &mut Shell<Self>) {
(self.update)(model, msg);
}
fn view(&self, model: &Self::Model) -> View<Self::Msg> {
(self.view)(model)
}
}
impl<Model, Msg> Clone for SimpleApp<Model, Msg> {
fn clone(&self) -> Self {
let init = self.init.clone();
let update = self.update.clone();
let view = self.view.clone();
SimpleApp{init,update,view}
}
}