KeybindingWidgets.py: Fix keybinding teaching in wayland sessions.

Device grabs require a GdkSeat in wayland, not GdkDevice.

GdkSeat path seems to work fine for both session types but for now
let's detect the session and keep what we know works for x11.

Author: mtwebster

files/usr/share/cinnamon/cinnamon-settings/bin/KeybindingWidgets.py

@@ -1,6 +1,9 @@
 #!/usr/bin/python3
 
 from gi.repository import Gtk, Gdk, GObject
+import util
+
+print("KeybindingWidgets session type: %s" % util.get_session_type())
 
 FORBIDDEN_KEYVALS = [
     Gdk.KEY_Home,
@@ -170,6 +173,8 @@ def __init__(self, a_widget, accel_string=None):
         self.teaching = False
         self.default_value = True
         self.text_string = ""
+        self.seat = None
+        self.keyboard = None
 
         self.update_label()
 
@@ -222,15 +227,33 @@ def set_value(self, accel_string=None):
     def editing_started(self, renderer, editable, path):
         if not self.teaching:
             self.path = path
-            device = Gtk.get_current_event_device()
-            if device.get_source() == Gdk.InputSource.KEYBOARD:
-                self.keyboard = device
-            else:
-                self.keyboard = device.get_associated_device()
 
-            self.keyboard.grab(self.a_widget.get_window(), Gdk.GrabOwnership.WINDOW, False,
-                               Gdk.EventMask.KEY_PRESS_MASK | Gdk.EventMask.KEY_RELEASE_MASK,
-                               None, Gdk.CURRENT_TIME)
+            if util.get_session_type() == "x11":
+                device = Gtk.get_current_event_device()
+                if device.get_source() == Gdk.InputSource.KEYBOARD:
+                    self.keyboard = device
+                else:
+                    self.keyboard = device.get_associated_device()
+
+                self.keyboard.grab(self.a_widget.get_window(), Gdk.GrabOwnership.WINDOW, False,
+                                   Gdk.EventMask.KEY_PRESS_MASK | Gdk.EventMask.KEY_RELEASE_MASK,
+                                   None, Gdk.CURRENT_TIME)
+            else:
+                display = self.a_widget.get_display()
+                self.seat = display.get_default_seat()
+
+                # Grab both keyboard and pointer to prevent mouse events from canceling the operation
+                grab_status = self.seat.grab(
+                    self.a_widget.get_window(),
+                    Gdk.SeatCapabilities.KEYBOARD | Gdk.SeatCapabilities.POINTER,
+                    False,
+                    None,
+                    None,
+                    None
+                )
+
+                if grab_status != Gdk.GrabStatus.SUCCESS:
+                    print(f"Warning: Keyboard grab failed with status: {grab_status}")
 
             editable.set_text(CellRendererKeybinding.PICK_AN_ACCELERATOR)
             self.accel_editable = editable
@@ -356,7 +379,14 @@ def on_key_release(self, widget, event):
         return True
 
     def ungrab(self):
-        self.keyboard.ungrab(Gdk.CURRENT_TIME)
+        if util.get_session_type() == "x11":
+            if self.keyboard is not None:
+                self.keyboard.ungrab(Gdk.CURRENT_TIME)
+                self.keyboard = None
+        else:
+            if self.seat is not None:
+                self.seat.ungrab()
+                self.seat = None
         if self.release_event_id > 0:
             self.accel_editable.disconnect(self.release_event_id)
             self.release_event_id = 0