Make `Command` implementations platform-specific

This allows us to introduce a platform-specific `Action` to both `iced_native`
and `iced_web` and remove the `Clipboard` from `Application::update` to maintain
purity.

Additionally, this should let us implement further actions to let users query
and modify the shell environment (e.g. window, clipboard, and more!)

1 files changed, 9 insertions, 12 deletions

diff --git a/futures/src/runtime.rs b/futures/src/runtime.rs
index e56a4eb0..7779e235 100644
--- a/futures/src/runtime.rs
+++ b/futures/src/runtime.rs
@@ -1,5 +1,6 @@
 //! Run commands and keep track of subscriptions.
-use crate::{subscription, Command, Executor, Subscription};
+use crate::BoxFuture;
+use crate::{subscription, Executor, Subscription};
 
 use futures::{channel::mpsc, Sink};
 use std::marker::PhantomData;
@@ -51,22 +52,18 @@ where
     ///
     /// The resulting `Message` will be forwarded to the `Sender` of the
     /// [`Runtime`].
-    pub fn spawn(&mut self, command: Command<Message>) {
+    pub fn spawn(&mut self, future: BoxFuture<Message>) {
         use futures::{FutureExt, SinkExt};
 
-        let futures = command.futures();
+        let mut sender = self.sender.clone();
 
-        for future in futures {
-            let mut sender = self.sender.clone();
-
-            let future = future.then(|message| async move {
-                let _ = sender.send(message).await;
+        let future = future.then(|message| async move {
+            let _ = sender.send(message).await;
 
-                ()
-            });
+            ()
+        });
 
-            self.executor.spawn(future);
-        }
+        self.executor.spawn(future);
     }
 
     /// Tracks a [`Subscription`] in the [`Runtime`].