Implement SetMode and FetchMode window actions

native/src/window/action.rs

@@ -1,6 +1,10 @@
+use crate::window::Mode;
+
+use iced_futures::MaybeSend;
+use std::fmt;
+
 /// An operation to be performed on some window.
-#[derive(Debug)]
-pub enum Action {
+pub enum Action<T> {
     /// Resize the window.
     Resize {
         /// The new logical width of the window
@@ -15,4 +19,43 @@ pub enum Action {
         /// The new logical y location of the window
         y: i32,
     },
+    /// Set the [`Mode`] of the window.
+    SetMode(Mode),
+    /// Fetch the current [`Mode`] of the window.
+    FetchMode(Box<dyn FnOnce(Mode) -> T + 'static>),
+}
+
+impl<T> Action<T> {
+    /// Maps the output of a window [`Action`] using the provided closure.
+    pub fn map<A>(
+        self,
+        f: impl Fn(T) -> A + 'static + MaybeSend + Sync,
+    ) -> Action<A>
+    where
+        T: 'static,
+    {
+        match self {
+            Self::Resize { width, height } => Action::Resize { width, height },
+            Self::Move { x, y } => Action::Move { x, y },
+            Self::SetMode(mode) => Action::SetMode(mode),
+            Self::FetchMode(o) => Action::FetchMode(Box::new(move |s| f(o(s)))),
+        }
+    }
+}
+
+impl<T> fmt::Debug for Action<T> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::Resize { width, height } => write!(
+                f,
+                "Action::Resize {{ widget: {}, height: {} }}",
+                width, height
+            ),
+            Self::Move { x, y } => {
+                write!(f, "Action::Move {{ x: {}, y: {} }}", x, y)
+            }
+            Self::SetMode(mode) => write!(f, "Action::SetMode({:?})", mode),
+            Self::FetchMode(_) => write!(f, "Action::FetchMode"),
+        }
+    }
 }