Add unset method to input grab traits

Fixes https://github.com/pop-os/cosmic-comp/issues/403.

src/shell/grabs/menu/mod.rs

@@ -634,6 +634,8 @@ impl PointerGrab<State> for MenuGrab {
     fn start_data(&self) -> &PointerGrabStartData<State> {
         &self.start_data
     }
+
+    fn unset(&mut self, _data: &mut State) {}
 }
 
 impl MenuGrab {

src/shell/grabs/mod.rs

@@ -313,6 +313,13 @@ impl PointerGrab<State> for ResizeGrab {
             ResizeGrab::Tiling(grab) => PointerGrab::start_data(grab),
         }
     }
+
+    fn unset(&mut self, data: &mut State) {
+        match self {
+            ResizeGrab::Floating(grab) => PointerGrab::unset(grab, data),
+            ResizeGrab::Tiling(grab) => PointerGrab::unset(grab, data),
+        }
+    }
 }
 
 impl TouchGrab<State> for ResizeGrab {
@@ -377,4 +384,11 @@ impl TouchGrab<State> for ResizeGrab {
             ResizeGrab::Tiling(grab) => TouchGrab::start_data(grab),
         }
     }
+
+    fn unset(&mut self, data: &mut State) {
+        match self {
+            ResizeGrab::Floating(grab) => TouchGrab::unset(grab, data),
+            ResizeGrab::Tiling(grab) => TouchGrab::unset(grab, data),
+        }
+    }
 }

src/shell/grabs/moving.rs

@@ -575,6 +575,8 @@ impl PointerGrab<State> for MoveGrab {
             _ => unreachable!(),
         }
     }
+
+    fn unset(&mut self, _data: &mut State) {}
 }
 
 impl TouchGrab<State> for MoveGrab {
@@ -632,6 +634,8 @@ impl TouchGrab<State> for MoveGrab {
             _ => unreachable!(),
         }
     }
+
+    fn unset(&mut self, _data: &mut State) {}
 }
 
 impl MoveGrab {