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use html::{Component, Renderable, Scope};
use web_sys::{window, Element};
pub struct App<COMP: Component> {
scope: Scope<COMP>,
}
impl<COMP> App<COMP>
where
COMP: Component + Renderable<COMP>,
{
pub fn new() -> Self {
let scope = Scope::new();
App { scope }
}
pub fn mount_to_body(self) -> Scope<COMP> {
let element = window()
.expect("context needs a window")
.document()
.expect("window needs a document")
.query_selector("body")
.expect("can't get body node for rendering")
.expect("can't unwrap body node");
self.mount(element, None)
}
pub fn mount_to_selector(self, selector: &str) -> Scope<COMP> {
let element = window()
.expect("context needs a window")
.document()
.expect("window needs a document")
.query_selector(selector)
.expect("can't get node for rendering")
.expect("can't unwrap body node");
self.mount(element, None)
}
pub fn mount_with_props(self, element: Element, props: COMP::Properties) -> Scope<COMP> {
self.mount(element, Some(props))
}
pub fn mount(self, element: Element, props: Option<COMP::Properties>) -> Scope<COMP> {
clear_element(&element);
self.scope.mount_in_place(element, None, None, props)
}
}
fn clear_element(element: &Element) {
while let Some(child) = element.last_child() {
element.remove_child(&child).expect("can't remove a child");
}
}