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//! `xdg_activation_v1`: a launcher hands a spawned app a token, and the
//! app's own first window presents it back to ask to be raised and focused.
use smithay::reexports::wayland_server::protocol::wl_surface::WlSurface;
use smithay::wayland::xdg_activation::{XdgActivationHandler, XdgActivationState, XdgActivationToken, XdgActivationTokenData};
use crate::state::CompState;
impl XdgActivationHandler for CompState {
fn activation_state(&mut self) -> &mut XdgActivationState {
&mut self.xdg_activation_state
}
/// A launcher spawns an app after first getting a token
/// (`get_activation_token`) and handing it to the new process (usually
/// via `XDG_ACTIVATION_TOKEN`); the app's own first window then
/// presents that same token back here via `activate`, asking to be
/// raised. Without this, that request was silently ignored - the new
/// window opened and just sat there unfocused behind everything,
/// exactly the gap `docs/PANEL_SUPPORT_TODO.md`'s P1 flagged.
///
/// No token bookkeeping of our own: `token_created`'s default already
/// accepts every token (fine for a single-user session with no
/// cross-client trust boundary to enforce), so all that's left is
/// mapping the activating `surface` to a `WindowId` and reusing the
/// exact same `focus_window` path a dock's "activate" request already
/// goes through (`foreign_toplevel.rs`). If the surface isn't tracked
/// yet - the activation raced ahead of this window's own mapping --
/// there is nothing to focus yet, so this is a no-op rather than an
/// error; the protocol doesn't require honoring every activation.
fn request_activation(&mut self, _token: XdgActivationToken, _token_data: XdgActivationTokenData, surface: WlSurface) {
if let Some(&id) = self.surface_to_id.get(&surface) {
crate::input::focus_window(self, id);
}
}
}
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