seat: add FallbackOutputMode

src/config/handler.rs

@@ -523,6 +523,9 @@ impl ConfigProxyHandler {
         seat: Seat,
         mode: FallbackOutputMode,
     ) -> Result<(), CphError> {
+        let Ok(mode) = mode.try_into() else {
+            return Err(CphError::UnknownFallbackOutputMode(mode));
+        };
         let seat = self.get_seat(seat)?;
         seat.set_fallback_output_mode(mode);
         Ok(())
@@ -3537,6 +3540,8 @@ enum CphError {
     UnknownBarPosition(BarPosition),
     #[error("Unknown gfx API {0:?}")]
     UnknownGfxApi(GfxApi),
+    #[error("Unknown fallback output mode {0:?}")]
+    UnknownFallbackOutputMode(FallbackOutputMode),
 }
 
 trait WithRequestName {

src/ifs/wl_seat.rs

@@ -106,10 +106,11 @@ use {
     },
     ahash::AHashMap,
     jay_config::{
-        input::FallbackOutputMode,
+        input::FallbackOutputMode as ConfigFallbackOutputMode,
         keyboard::syms::{KeySym, SYM_Escape},
     },
     kbvm::Keycode,
+    linearize::Linearize,
     run_on_drop::on_drop,
     smallvec::SmallVec,
     std::{
@@ -258,6 +259,34 @@ enum MarkMode {
     Jump,
 }
 
+#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, Linearize)]
+pub enum FallbackOutputMode {
+    Cursor,
+    Focus,
+}
+
+impl TryFrom<ConfigFallbackOutputMode> for FallbackOutputMode {
+    type Error = ();
+
+    fn try_from(value: ConfigFallbackOutputMode) -> Result<Self, Self::Error> {
+        let v = match value {
+            ConfigFallbackOutputMode::Cursor => FallbackOutputMode::Cursor,
+            ConfigFallbackOutputMode::Focus => FallbackOutputMode::Focus,
+            _ => return Err(()),
+        };
+        Ok(v)
+    }
+}
+
+impl Into<ConfigFallbackOutputMode> for FallbackOutputMode {
+    fn into(self) -> ConfigFallbackOutputMode {
+        match self {
+            FallbackOutputMode::Cursor => ConfigFallbackOutputMode::Cursor,
+            FallbackOutputMode::Focus => ConfigFallbackOutputMode::Focus,
+        }
+    }
+}
+
 const CHANGE_CURSOR_MOVED: u32 = 1 << 0;
 const CHANGE_TREE: u32 = 1 << 1;