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use super::*;
use crate::sys;
use std::sync::{ Arc, Weak };
pub unsafe trait Callback {
const ID: i32;
const SIZE: i32;
unsafe fn from_raw(raw: *mut c_void) -> Self;
}
/// A handle that can be used to remove a callback
/// at a later point.
///
/// Removes the callback when dropped
pub struct CallbackHandle<Manager = ClientManager> {
id: i32,
inner: Weak<Inner<Manager>>,
}
unsafe impl <Manager> Send for CallbackHandle<Manager> {}
impl <Manager> Drop for CallbackHandle<Manager> {
fn drop(&mut self) {
if let Some(inner) = self.inner.upgrade() {
let mut cb = inner.callbacks.lock().unwrap();
cb.callbacks.remove(&self.id);
}
}
}
pub(crate) unsafe fn register_callback<C, F, Manager>(inner: &Arc<Inner<Manager>>, mut f: F, _game_server: bool) -> CallbackHandle<Manager>
where C: Callback,
F: FnMut(C) + Send + 'static
{
{
let mut callbacks = inner.callbacks.lock().unwrap();
callbacks.callbacks.insert(C::ID, Box::new(move |param| {
let param = C::from_raw(param);
f(param)
}));
}
CallbackHandle {
id: C::ID,
inner: Arc::downgrade(&inner),
}
}
pub(crate) unsafe fn register_call_result<C, F, Manager>(inner: &Arc<Inner<Manager>>, api_call: sys::SteamAPICall_t, _callback_id: i32, f: F)
where F: for <'a> FnOnce(&'a C, bool) + 'static + Send
{
let mut callbacks = inner.callbacks.lock().unwrap();
callbacks.call_results.insert(api_call, Box::new(move |param, failed| {
f(&*(param as *const C), failed)
}));
}
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