refactor: make SurfaceMessage handling opt in

Cargo.toml

@@ -71,7 +71,9 @@ wayland = [
     "iced/wayland",
     "iced_winit/wayland",
     "cctk",
+    "surface-message",
 ]
+surface-message = []
 # multi-window support
 multi-window = ["iced/multi-window"]
 # Render with wgpu

examples/open-dialog/src/main.rs

@@ -7,7 +7,7 @@ use apply::Apply;
 use cosmic::app::{Core, Settings, Task};
 use cosmic::dialog::file_chooser::{self, FileFilter};
 use cosmic::iced_core::Length;
-use cosmic::surface_message::{SurfaceMessage, SurfaceMessageHandler};
+use cosmic::surface_message::{MessageWrapper, SurfaceMessage};
 use cosmic::widget::button;
 use cosmic::{executor, iced, ApplicationExt, Element};
 use std::sync::Arc;
@@ -38,11 +38,11 @@ pub enum Message {
     Surface(SurfaceMessage),
 }
 
-impl SurfaceMessageHandler for Message {
-    fn to_surface_message(self) -> cosmic::surface_message::MessageWrapper<Self> {
-        match self {
-            Message::Surface(m) => cosmic::surface_message::MessageWrapper::Surface(m),
-            m => cosmic::surface_message::MessageWrapper::Message(m),
+impl From<Message> for MessageWrapper<Message> {
+    fn from(value: Message) -> Self {
+        match value {
+            Message::Surface(s) => MessageWrapper::Surface(s),
+            m => MessageWrapper::Message(m),
         }
     }
 }

src/app/core.rs

@@ -388,7 +388,7 @@ impl Core {
         id
     }
 
-    #[cfg(feature = "wayland")]
+    #[cfg(feature = "surface-message")]
     /// # Panics
     ///
     /// Will panic if the menu bar collapses without tracking the size

src/surface_message.rs

@@ -7,6 +7,13 @@ pub enum MessageWrapper<M> {
     Message(M),
 }
 
+#[cfg(not(feature = "surface-message"))]
+impl<M> From<M> for MessageWrapper<M> {
+    fn from(value: M) -> Self {
+        MessageWrapper::Message(value)
+    }
+}
+
 /// Ignore this message in your application. It will be intercepted.
 #[derive(Clone)]
 pub enum SurfaceMessage {