tree: add Node::node_output

src/ifs/wl_surface.rs

@@ -1783,6 +1783,10 @@ impl Node for WlSurface {
         self.buffer_abs_pos.get()
     }
 
+    fn node_output(&self) -> Option<Rc<OutputNode>> {
+        Some(self.output.get())
+    }
+
     fn node_active_changed(&self, active: bool) {
         if let Some(tl) = self.toplevel.get() {
             tl.tl_surface_active_changed(active);

src/ifs/wl_surface/ext_session_lock_surface_v1.rs

@@ -10,7 +10,7 @@ use {
         leaks::Tracker,
         object::{Object, Version},
         rect::Rect,
-        tree::{FindTreeResult, FindTreeUsecase, FoundNode, Node, NodeId, NodeVisitor},
+        tree::{FindTreeResult, FindTreeUsecase, FoundNode, Node, NodeId, NodeVisitor, OutputNode},
         utils::numcell::NumCell,
         wire::{ExtSessionLockSurfaceV1Id, WlSurfaceId, ext_session_lock_surface_v1::*},
     },
@@ -123,6 +123,10 @@ impl Node for ExtSessionLockSurfaceV1 {
         self.surface.node_absolute_position()
     }
 
+    fn node_output(&self) -> Option<Rc<OutputNode>> {
+        self.output.node()
+    }
+
     fn node_find_tree_at(
         &self,
         x: i32,

src/ifs/wl_surface/tray.rs

@@ -292,6 +292,10 @@ impl<T: TrayItem> Node for T {
         self.data().surface.node_absolute_position()
     }
 
+    fn node_output(&self) -> Option<Rc<OutputNode>> {
+        self.data().output.node()
+    }
+
     fn node_find_tree_at(
         &self,
         x: i32,

src/ifs/wl_surface/x_surface/xwindow.rs

@@ -12,7 +12,7 @@ use {
         state::State,
         tree::{
             ContainerSplit, Direction, FindTreeResult, FindTreeUsecase, FoundNode, Node, NodeId,
-            NodeVisitor, StackedNode, TileDragDestination, ToplevelData, ToplevelNode,
+            NodeVisitor, OutputNode, StackedNode, TileDragDestination, ToplevelData, ToplevelNode,
             ToplevelNodeBase, WorkspaceNode, default_tile_drag_destination,
         },
         utils::{clonecell::CloneCell, copyhashmap::CopyHashMap, linkedlist::LinkedNode},
@@ -346,6 +346,10 @@ impl Node for Xwindow {
         self.data.info.extents.get()
     }
 
+    fn node_output(&self) -> Option<Rc<OutputNode>> {
+        self.toplevel_data.output_opt()
+    }
+
     fn node_do_focus(self: Rc<Self>, seat: &Rc<WlSeatGlobal>, _direction: Direction) {
         seat.focus_toplevel(self.clone());
     }

src/ifs/wl_surface/xdg_surface/xdg_popup.rs

@@ -314,6 +314,10 @@ impl Node for XdgPopup {
         self.xdg.absolute_desired_extents.get()
     }
 
+    fn node_output(&self) -> Option<Rc<OutputNode>> {
+        self.xdg.workspace.get().map(|w| w.output.get())
+    }
+
     fn node_find_tree_at(
         &self,
         x: i32,

src/ifs/wl_surface/xdg_surface/xdg_toplevel.rs

@@ -523,6 +523,10 @@ impl Node for XdgToplevel {
         self.xdg.absolute_desired_extents.get()
     }
 
+    fn node_output(&self) -> Option<Rc<OutputNode>> {
+        self.toplevel_data.output_opt()
+    }
+
     fn node_do_focus(self: Rc<Self>, seat: &Rc<WlSeatGlobal>, _direction: Direction) {
         seat.focus_toplevel(self.clone());
     }

src/ifs/wl_surface/zwlr_layer_surface_v1.rs

@@ -648,6 +648,10 @@ impl Node for ZwlrLayerSurfaceV1 {
         self.pos.get()
     }
 
+    fn node_output(&self) -> Option<Rc<OutputNode>> {
+        self.output.node()
+    }
+
     fn node_find_tree_at(
         &self,
         x: i32,