config: add focus-below and focus-above actions

jay-config/src/_private/client.rs

@@ -15,7 +15,7 @@ use {
         client::{Client, ClientCriterion, ClientMatcher, MatchedClient},
         exec::Command,
         input::{
-            FocusFollowsMouseMode, InputDevice, Seat, SwitchEvent, Timeline,
+            FocusFollowsMouseMode, InputDevice, LayerDirection, Seat, SwitchEvent, Timeline,
             acceleration::AccelProfile, capability::Capability, clickmethod::ClickMethod,
         },
         keyboard::{
@@ -379,6 +379,10 @@ impl ConfigClient {
         });
     }
 
+    pub fn seat_focus_layer_rel(&self, seat: Seat, direction: LayerDirection) {
+        self.send(&ClientMessage::SeatFocusLayerRel { seat, direction });
+    }
+
     pub fn seat_focus(&self, seat: Seat, direction: Direction) {
         self.send(&ClientMessage::SeatFocus { seat, direction });
     }

jay-config/src/_private/ipc.rs

@@ -4,7 +4,7 @@ use {
         Axis, Direction, PciId, Workspace,
         client::{Client, ClientMatcher},
         input::{
-            FocusFollowsMouseMode, InputDevice, Seat, SwitchEvent, Timeline,
+            FocusFollowsMouseMode, InputDevice, LayerDirection, Seat, SwitchEvent, Timeline,
             acceleration::AccelProfile, capability::Capability, clickmethod::ClickMethod,
         },
         keyboard::{Keymap, mods::Modifiers, syms::KeySym},
@@ -737,6 +737,10 @@ pub enum ClientMessage<'a> {
         seat: Seat,
         same_workspace: bool,
     },
+    SeatFocusLayerRel {
+        seat: Seat,
+        direction: LayerDirection,
+    },
 }
 
 #[derive(Serialize, Deserialize, Debug)]

jay-config/src/input.rs

@@ -189,6 +189,13 @@ pub enum Timeline {
     Newer,
 }
 
+/// A direction for layer traversal.
+#[derive(Serialize, Deserialize, Copy, Clone, Debug, Hash, Eq, PartialEq)]
+pub enum LayerDirection {
+    Below,
+    Above,
+}
+
 /// A seat.
 #[derive(Serialize, Deserialize, Copy, Clone, Debug, Hash, Eq, PartialEq)]
 pub struct Seat(pub u64);
@@ -303,6 +310,12 @@ impl Seat {
         get!().seat_focus_history_set_same_workspace(self, same_workspace)
     }
 
+    /// Moves the keyboard focus of the seat to the layer above or below the current
+    /// layer.
+    pub fn focus_layer_rel(self, direction: LayerDirection) {
+        get!().seat_focus_layer_rel(self, direction)
+    }
+
     /// Moves the keyboard focus of the seat in the specified direction.
     pub fn focus(self, direction: Direction) {
         get!().seat_focus(self, direction)