napi-rs/examples/napi/src/reference.rs
2022-05-10 21:09:45 +08:00

155 lines
2.8 KiB
Rust

use std::{cell::RefCell, rc::Rc};
use napi::bindgen_prelude::*;
pub struct Repository {
dir: String,
}
impl Repository {
fn remote(&self) -> Remote {
Remote { inner: self }
}
}
pub struct Remote<'repo> {
inner: &'repo Repository,
}
impl<'repo> Remote<'repo> {
fn name(&self) -> String {
"origin".to_owned()
}
}
#[napi]
pub struct JsRepo {
inner: Repository,
}
#[napi]
impl JsRepo {
#[napi(constructor)]
pub fn new(dir: String) -> Self {
JsRepo {
inner: Repository { dir },
}
}
#[napi]
pub fn remote(&self, reference: Reference<JsRepo>, env: Env) -> Result<JsRemote> {
Ok(JsRemote {
inner: reference.share_with(env, |repo| Ok(repo.inner.remote()))?,
})
}
}
#[napi]
pub struct JsRemote {
inner: SharedReference<JsRepo, Remote<'static>>,
}
#[napi]
impl JsRemote {
#[napi]
pub fn name(&self) -> String {
self.inner.name()
}
}
struct OwnedStyleSheet {
rules: Vec<String>,
}
#[napi]
pub struct CSSRuleList {
owned: Rc<RefCell<OwnedStyleSheet>>,
parent: WeakReference<CSSStyleSheet>,
}
#[napi]
impl CSSRuleList {
#[napi]
pub fn get_rules(&self) -> Vec<String> {
self.owned.borrow().rules.to_vec()
}
#[napi(getter)]
pub fn parent_style_sheet(&self) -> WeakReference<CSSStyleSheet> {
self.parent.clone()
}
#[napi(getter)]
pub fn name(&self, env: Env) -> Result<Option<String>> {
Ok(
self
.parent
.upgrade(env)?
.map(|stylesheet| stylesheet.name.clone()),
)
}
}
#[napi]
pub struct CSSStyleSheet {
name: String,
inner: Rc<RefCell<OwnedStyleSheet>>,
rules: Option<Reference<CSSRuleList>>,
}
#[napi]
pub struct AnotherCSSStyleSheet {
inner: Rc<RefCell<OwnedStyleSheet>>,
rules: Reference<CSSRuleList>,
}
#[napi]
impl AnotherCSSStyleSheet {
#[napi(getter)]
pub fn rules(&self, env: Env) -> Result<Reference<CSSRuleList>> {
self.rules.clone(env)
}
}
#[napi]
impl CSSStyleSheet {
#[napi(constructor)]
pub fn new(name: String, rules: Vec<String>) -> Result<Self> {
let inner = Rc::new(RefCell::new(OwnedStyleSheet { rules }));
Ok(CSSStyleSheet {
name,
inner,
rules: None,
})
}
#[napi(getter)]
pub fn rules(
&mut self,
env: Env,
reference: Reference<CSSStyleSheet>,
) -> Result<Reference<CSSRuleList>> {
if let Some(rules) = &self.rules {
return rules.clone(env);
}
let rules = CSSRuleList::into_reference(
CSSRuleList {
owned: self.inner.clone(),
parent: reference.downgrade(),
},
env,
)?;
self.rules = Some(rules.clone(env)?);
Ok(rules)
}
#[napi]
pub fn another_css_style_sheet(&self, env: Env) -> Result<AnotherCSSStyleSheet> {
Ok(AnotherCSSStyleSheet {
inner: self.inner.clone(),
rules: self.rules.as_ref().unwrap().clone(env)?,
})
}
}