wayland: keyboard: track input method done events

src/core/button.rs

@@ -184,6 +184,18 @@ impl<D: Display, K: Keyboard> Button<D, K> {
         &self.layout
     }
 
+    #[inline(always)]
+    pub fn keyboard(&self) -> &K
+    {
+        &self.kbd
+    }
+
+    #[inline(always)]
+    pub fn keyboard_mut(&mut self) -> &mut K
+    {
+        &mut self.kbd
+    }
+
     #[inline(always)]
     pub fn mod_state(&self) -> &[ModState; MODIFIERS_MAX]
     {

src/wayland/dispatcher.rs

@@ -450,7 +450,9 @@ impl Dispatch<zwp_input_method_v2::ZwpInputMethodV2, ()> for Dispatcher {
             zwp_input_method_v2::Event::TextChangeCause { .. } => (),
             zwp_input_method_v2::Event::ContentType { .. } => (),
             zwp_input_method_v2::Event::SurroundingText { .. } => (),
-            zwp_input_method_v2::Event::Done => (),
+            zwp_input_method_v2::Event::Done => {
+                ctx.seat.keyboard_mut().done();
+            },
             _ => eprintln!("warn: unknown zwp_input_method_v2 event emitted"),
         }
     }

src/wayland/keyboard.rs

@@ -26,6 +26,8 @@ pub struct VirtualKeyboard {
     keymap: File,
     keymap_id: u8,
 
+    im_serial: u32,
+
     keycodes: HashMap<Keysym, u8>,
     pressed: [Keysym; 248],
     mod_state: u32,
@@ -48,6 +50,8 @@ impl VirtualKeyboard {
             keymap,
             keymap_id: 1,
 
+            im_serial: 0,
+
             keycodes: HashMap::with_capacity(248),
             pressed: [Keysym::NoSymbol; 248],
             mod_state: 0,
@@ -77,6 +81,11 @@ impl VirtualKeyboard {
                      keycode).unwrap();
         }
     }
+
+    pub fn done(&mut self)
+    {
+        self.im_serial += 1;
+    }
 }
 
 impl Keyboard for VirtualKeyboard {

src/wayland/seat.rs

@@ -91,6 +91,18 @@ impl<D: Display, K: Keyboard,
         self.button.layout()
     }
 
+    #[inline(always)]
+    pub fn keyboard(&self) -> &K
+    {
+        self.button.keyboard()
+    }
+
+    #[inline(always)]
+    pub fn keyboard_mut(&mut self) -> &mut K
+    {
+        self.button.keyboard_mut()
+    }
+
     #[inline(always)]
     pub fn mod_state(&self) -> &[ModState]
     {