-
Notifications
You must be signed in to change notification settings - Fork 947
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Use
setTimeout trick instead of requestIdleCallback
- Loading branch information
Showing
6 changed files
with
43 additions
and
102 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,124 +1,59 @@ | ||
| use once_cell::unsync::OnceCell; | ||
| use std::cell::Cell; | ||
| use std::rc::Rc; | ||
| use std::time::Duration; | ||
| use wasm_bindgen::closure::Closure; | ||
| use wasm_bindgen::prelude::wasm_bindgen; | ||
| use wasm_bindgen::JsCast; | ||
| use wasm_bindgen::JsValue; | ||
| use wasm_bindgen::{JsCast, JsValue}; | ||
| use web_sys::{MessageChannel, MessagePort}; | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct Timeout { | ||
| window: web_sys::Window, | ||
| handle: i32, | ||
| _closure: Closure<dyn FnMut()>, | ||
| port: MessagePort, | ||
| _message_closure: Closure<dyn FnMut()>, | ||
| _timeout_closure: Closure<dyn FnMut()>, | ||
| } | ||
|
|
||
| impl Timeout { | ||
| pub fn new<F>(window: web_sys::Window, f: F, duration: Duration) -> Timeout | ||
| pub fn new<F>(window: web_sys::Window, f: F, duration: Option<Duration>) -> Timeout | ||
| where | ||
| F: 'static + FnMut(), | ||
| { | ||
| let closure = Closure::wrap(Box::new(f) as Box<dyn FnMut()>); | ||
|
|
||
| let handle = window | ||
| .set_timeout_with_callback_and_timeout_and_arguments_0( | ||
| closure.as_ref().unchecked_ref(), | ||
| let channel = MessageChannel::new().unwrap(); | ||
| let message_closure = Closure::new(f); | ||
| let port_1 = channel.port1(); | ||
| port_1 | ||
| .add_event_listener_with_callback("message", message_closure.as_ref().unchecked_ref()) | ||
| .expect("Failed to set message handler"); | ||
| port_1.start(); | ||
|
|
||
| let port_2 = channel.port2(); | ||
| let timeout_closure = Closure::new(move || { | ||
| port_2 | ||
| .post_message(&JsValue::UNDEFINED) | ||
| .expect("Failed to send message") | ||
| }); | ||
| let handle = if let Some(duration) = duration { | ||
| window.set_timeout_with_callback_and_timeout_and_arguments_0( | ||
| timeout_closure.as_ref().unchecked_ref(), | ||
| duration.as_millis() as i32, | ||
| ) | ||
| .expect("Failed to set timeout"); | ||
| } else { | ||
| window.set_timeout_with_callback(timeout_closure.as_ref().unchecked_ref()) | ||
| } | ||
| .expect("Failed to set timeout"); | ||
|
|
||
| Timeout { | ||
| window, | ||
| handle, | ||
| _closure: closure, | ||
| port: port_1, | ||
| _message_closure: message_closure, | ||
| _timeout_closure: timeout_closure, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl Drop for Timeout { | ||
| fn drop(&mut self) { | ||
| self.window.clear_timeout_with_handle(self.handle); | ||
| self.port.close(); | ||
| } | ||
| } | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct IdleCallback { | ||
| window: web_sys::Window, | ||
| handle: Handle, | ||
| fired: Rc<Cell<bool>>, | ||
| _closure: Closure<dyn FnMut()>, | ||
| } | ||
|
|
||
| #[derive(Clone, Copy, Debug)] | ||
| enum Handle { | ||
| IdleCallback(u32), | ||
| Timeout(i32), | ||
| } | ||
|
|
||
| impl IdleCallback { | ||
| pub fn new<F>(window: web_sys::Window, mut f: F) -> IdleCallback | ||
| where | ||
| F: 'static + FnMut(), | ||
| { | ||
| let fired = Rc::new(Cell::new(false)); | ||
| let c_fired = fired.clone(); | ||
| let closure = Closure::wrap(Box::new(move || { | ||
| (*c_fired).set(true); | ||
| f(); | ||
| }) as Box<dyn FnMut()>); | ||
|
|
||
| let handle = if has_idle_callback_support(&window) { | ||
| Handle::IdleCallback( | ||
| window | ||
| .request_idle_callback(closure.as_ref().unchecked_ref()) | ||
| .expect("Failed to request idle callback"), | ||
| ) | ||
| } else { | ||
| Handle::Timeout( | ||
| window | ||
| .set_timeout_with_callback(closure.as_ref().unchecked_ref()) | ||
| .expect("Failed to set timeout"), | ||
| ) | ||
| }; | ||
|
|
||
| IdleCallback { | ||
| window, | ||
| handle, | ||
| fired, | ||
| _closure: closure, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl Drop for IdleCallback { | ||
| fn drop(&mut self) { | ||
| if !(*self.fired).get() { | ||
| match self.handle { | ||
| Handle::IdleCallback(handle) => self.window.cancel_idle_callback(handle), | ||
| Handle::Timeout(handle) => self.window.clear_timeout_with_handle(handle), | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| fn has_idle_callback_support(window: &web_sys::Window) -> bool { | ||
| thread_local! { | ||
| static IDLE_CALLBACK_SUPPORT: OnceCell<bool> = OnceCell::new(); | ||
| } | ||
|
|
||
| IDLE_CALLBACK_SUPPORT.with(|support| { | ||
| *support.get_or_init(|| { | ||
| #[wasm_bindgen] | ||
| extern "C" { | ||
| type IdleCallbackSupport; | ||
|
|
||
| #[wasm_bindgen(method, getter, js_name = requestIdleCallback)] | ||
| fn has_request_idle_callback(this: &IdleCallbackSupport) -> JsValue; | ||
| } | ||
|
|
||
| let support: &IdleCallbackSupport = window.unchecked_ref(); | ||
| !support.has_request_idle_callback().is_undefined() | ||
| }) | ||
| }) | ||
| } |