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use crate::interface::Hooks;
use crate::utils::{document, Element, ElementResult};
use crate::Html;
use std::collections::BTreeMap;
pub use std::fmt::{Result, Write};
pub use std::sync::Arc;
pub type Renderables = Vec<Arc<dyn Render>>;
pub trait Render {
fn html(&self) -> String {
let mut buf = vec![];
self.render(&mut buf).unwrap();
buf.join("")
}
fn render_tree(self) -> ElementResult<Html>
where
Self: Sized,
{
let mut parent = document().create_element("div").unwrap();
let mut renderable = vec![];
let map = self.render_tree_into(&mut parent, &mut renderable)?;
let mut list = vec![];
let children = parent.children();
let len = children.length();
for index in 0..len {
if let Some(child) = children.get_with_index(index) {
list.push(child);
}
}
Html::new(list, map, renderable)
}
fn render_tree_into(
self,
parent: &mut Element,
renderables: &mut Renderables,
) -> ElementResult<BTreeMap<String, Element>>
where
Self: Sized,
{
let mut map = BTreeMap::new();
self.render_node(parent, &mut map, renderables)?;
Ok(map)
}
fn render_node(
self,
_parent: &mut Element,
_map: &mut Hooks,
_renderables: &mut Renderables,
) -> ElementResult<()>
where
Self: Sized,
{
Ok(())
}
fn render(&self, _w: &mut Vec<String>) -> ElementResult<()>;
fn remove_event_listeners(&self) -> ElementResult<()> {
Ok(())
}
}
impl Render for () {
fn render(&self, _w: &mut Vec<String>) -> ElementResult<()> {
Ok(())
}
}
impl Render for &str {
fn render(&self, w: &mut Vec<String>) -> ElementResult<()> {
w.push(self.to_string());
Ok(())
}
fn render_node(
self,
parent: &mut Element,
_map: &mut Hooks,
_renderables: &mut Renderables,
) -> ElementResult<()> {
let el = document().create_text_node(self);
parent.append_child(&el)?;
Ok(())
}
}
impl<T: Render + Clone> Render for Vec<T> {
fn render(&self, list: &mut Vec<std::string::String>) -> ElementResult<()> {
for item in self {
item.render(list)?;
}
Ok(())
}
fn render_node(
self,
parent: &mut Element,
map: &mut Hooks,
renderables: &mut Renderables,
) -> ElementResult<()> {
for item in self {
item.render_node(parent, map, renderables)?;
}
Ok(())
}
}
impl<T: Render + Clone> Render for Option<T> {
fn render_node(
self,
parent: &mut Element,
map: &mut Hooks,
renderables: &mut Renderables,
) -> ElementResult<()> {
if let Some(h) = self {
h.render_node(parent, map, renderables)?;
}
Ok(())
}
fn render(&self, w: &mut Vec<String>) -> ElementResult<()> {
if let Some(h) = self {
h.render(w)?;
}
Ok(())
}
}
macro_rules! impl_tuple {
($($ident:ident)+) => {
impl<$($ident: Render,)+> Render for ($($ident,)+) {
#[inline]
#[allow(non_snake_case)]
fn render(&self, w: &mut Vec<String>)->ElementResult<()>{
let ($($ident,)+) = self;
$($ident.render(w)?;)+
Ok(())
}
#[allow(non_snake_case)]
fn render_node(
self,
parent:&mut Element,
map:&mut Hooks,
renderables:&mut Renderables
)->ElementResult<()>{
let ($($ident,)+) = self;
$($ident.render_node(parent, map, renderables)?;)+
Ok(())
}
}
}
}
macro_rules! impl_types {
($($ident:ident)+) => {
$(
impl Render for $ident {
fn render(&self, w: &mut Vec<String>)->ElementResult<()>{
w.push(format!("{}", self));
Ok(())
}
fn render_node(
self,
parent:&mut Element,
_map:&mut Hooks,
_renderables:&mut Renderables
)->ElementResult<()>{
let el = document().create_text_node(&format!("{}", self));
parent.append_child(&el)?;
Ok(())
}
}
)+
}
}
impl_types! {f32 f64 u128 u64 u32 u16 u8 i8 i16 i32 i64 i128 bool String usize}
impl_tuple! {A B}
impl_tuple! {A B C}
impl_tuple! {A B C D}
impl_tuple! {A B C D E}
impl_tuple! {A B C D F G}
impl_tuple! {A B C D F G H}
impl_tuple! {A B C D F G H I}
impl_tuple! {A B C D F G H I J}
impl_tuple! {A B C D F G H I J K}