Add xdg-foreign

src/handlers/xdg_shell.rs

@@ -22,7 +22,10 @@ use smithay::wayland::shell::xdg::{
     PopupSurface, PositionerState, ToplevelSurface, XdgPopupSurfaceData, XdgShellHandler,
     XdgShellState, XdgToplevelSurfaceData, XdgToplevelSurfaceRoleAttributes,
 };
-use smithay::{delegate_kde_decoration, delegate_xdg_decoration, delegate_xdg_shell};
+use smithay::wayland::xdg_foreign::{XdgForeignHandler, XdgForeignState};
+use smithay::{
+    delegate_kde_decoration, delegate_xdg_decoration, delegate_xdg_foreign, delegate_xdg_shell,
+};
 
 use crate::layout::workspace::ColumnWidth;
 use crate::niri::{PopupGrabState, State};
@@ -526,9 +529,15 @@ impl KdeDecorationHandler for State {
         &self.niri.kde_decoration_state
     }
 }
-
 delegate_kde_decoration!(State);
 
+impl XdgForeignHandler for State {
+    fn xdg_foreign_state(&mut self) -> &mut XdgForeignState {
+        &mut self.niri.xdg_foreign_state
+    }
+}
+delegate_xdg_foreign!(State);
+
 fn initial_configure_sent(toplevel: &ToplevelSurface) -> bool {
     with_states(toplevel.wl_surface(), |states| {
         states

src/niri.rs

@@ -86,6 +86,7 @@ use smithay::wayland::tablet_manager::{TabletManagerState, TabletSeatTrait};
 use smithay::wayland::text_input::TextInputManagerState;
 use smithay::wayland::viewporter::ViewporterState;
 use smithay::wayland::virtual_keyboard::VirtualKeyboardManagerState;
+use smithay::wayland::xdg_foreign::XdgForeignState;
 
 use crate::backend::tty::SurfaceDmabufFeedback;
 use crate::backend::{Backend, RenderResult, Tty, Winit};
@@ -160,6 +161,7 @@ pub struct Niri {
     pub foreign_toplevel_state: ForeignToplevelManagerState,
     pub screencopy_state: ScreencopyManagerState,
     pub viewporter_state: ViewporterState,
+    pub xdg_foreign_state: XdgForeignState,
     pub shm_state: ShmState,
     pub output_manager_state: OutputManagerState,
     pub dmabuf_state: DmabufState,
@@ -920,6 +922,7 @@ impl Niri {
             !client.get_data::<ClientState>().unwrap().restricted
         });
         let viewporter_state = ViewporterState::new::<State>(&display_handle);
+        let xdg_foreign_state = XdgForeignState::new::<State>(&display_handle);
 
         let mut seat: Seat<State> = seat_state.new_wl_seat(&display_handle, backend.seat_name());
         seat.add_keyboard(
@@ -1042,6 +1045,7 @@ impl Niri {
             foreign_toplevel_state,
             screencopy_state,
             viewporter_state,
+            xdg_foreign_state,
             text_input_state,
             input_method_state,
             virtual_keyboard_state,