teksilo_core/window/
id.rs

1// SPDX-License-Identifier: MPL-2.0
2// SPDX-FileCopyrightText: 2026 FernTech
3
4//! Opaque per-window identifier.
5
6use std::fmt;
7
8/// Opaque identifier for an application window.
9///
10/// Allocated by the app-level window manager when a window is created
11/// and passed back to the app via [`WindowState::id`](super::state::WindowState::id)
12/// or the return value of window-opening APIs. IDs are `Copy`, unique
13/// within a process, and never reused after a window closes.
14///
15/// `Serialize`/`Deserialize` so it can appear inside a persisted type
16/// (e.g. `teksilo_widgets::toast::ToastRoute::Window` mirrored into an
17/// archived `NotificationEntry`) — but note the id is NOT stable across
18/// process restarts, only "unique within a process": a persisted
19/// window-scoped route from a previous run will not match any window
20/// in the current one, which is the intended, accepted behaviour for
21/// something that was inherently about a transient session's window.
22#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, serde::Serialize, serde::Deserialize)]
23pub struct TeksiloWindowId(u64);
24
25impl TeksiloWindowId {
26    /// Construct an id from a raw `u64`. Intended for the window
27    /// manager's allocator — application code should not fabricate ids.
28    pub fn new(id: u64) -> Self {
29        Self(id)
30    }
31
32    /// The raw numeric id (for serialization or debugging).
33    pub fn raw(&self) -> u64 {
34        self.0
35    }
36}
37
38impl fmt::Display for TeksiloWindowId {
39    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
40        write!(f, "Window({})", self.0)
41    }
42}
43
44#[cfg(test)]
45mod tests {
46    use super::*;
47
48    #[test]
49    fn equality_is_by_value() {
50        let a = TeksiloWindowId::new(1);
51        let b = TeksiloWindowId::new(1);
52        let c = TeksiloWindowId::new(2);
53        assert_eq!(a, b);
54        assert_ne!(a, c);
55    }
56
57    #[test]
58    fn display_format() {
59        assert_eq!(format!("{}", TeksiloWindowId::new(7)), "Window(7)");
60    }
61}
teksilo_core/window/id.rs

teksilo_core/window/
id.rs
