tauri_store/store/
watch.rs

1use crate::error::Result;
2use std::fmt;
3use std::ops::Deref;
4use std::sync::atomic::AtomicU32;
5use std::sync::atomic::Ordering::Relaxed;
6use std::sync::Arc;
7use tauri::{AppHandle, Runtime};
8
9static CURRENT_ID: AtomicU32 = AtomicU32::new(0);
10
11type WatcherFn<R> = dyn Fn(AppHandle<R>) -> Result<()> + Send + Sync;
12
13pub(crate) struct Watcher<R: Runtime> {
14  id: WatcherId,
15  inner: Arc<WatcherFn<R>>,
16}
17
18impl<R: Runtime> Watcher<R> {
19  pub(crate) fn new<F>(f: F) -> (WatcherId, Self)
20  where
21    F: Fn(AppHandle<R>) -> Result<()> + Send + Sync + 'static,
22  {
23    let id = WatcherId(CURRENT_ID.fetch_add(1, Relaxed));
24    (id, Self { id, inner: Arc::new(f) })
25  }
26
27  pub(crate) fn call(&self, app: AppHandle<R>) {
28    let _ = (self.inner)(app);
29  }
30}
31
32impl<R: Runtime> Clone for Watcher<R> {
33  fn clone(&self) -> Self {
34    Self {
35      id: self.id,
36      inner: Arc::clone(&self.inner),
37    }
38  }
39}
40
41impl<R: Runtime> fmt::Debug for Watcher<R> {
42  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
43    f.debug_struct("Listener")
44      .field("id", &self.id)
45      .finish_non_exhaustive()
46  }
47}
48
49/// Unique watcher identifier.
50#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
51pub struct WatcherId(u32);
52
53impl Deref for WatcherId {
54  type Target = u32;
55
56  fn deref(&self) -> &Self::Target {
57    &self.0
58  }
59}
60
61impl From<u32> for WatcherId {
62  fn from(id: u32) -> Self {
63    Self(id)
64  }
65}
tauri_store/store/watch.rs

tauri_store/store/
watch.rs
