Add Application::Executor associated type

winit/Cargo.toml

@@ -16,17 +16,11 @@ debug = []
 [dependencies]
 winit = { version = "0.20.0-alpha3", git = "https://github.com/hecrj/winit", rev = "709808eb4e69044705fcb214bcc30556db761405"}
 log = "0.4"
-futures = "0.3"
 
 [dependencies.iced_native]
 version = "0.1.0-alpha"
 path = "../native"
 
-[dependencies.iced_futures]
-version = "0.1.0-alpha"
-path = "../futures"
-features = ["thread-pool"]
-
 [dependencies.window_clipboard]
 git = "https://github.com/hecrj/window_clipboard"
 rev = "22c6dd6c04cd05d528029b50a30c56417cd4bebf"

winit/src/application.rs

@@ -1,10 +1,9 @@
 use crate::{
     conversion,
     input::{keyboard, mouse},
-    window, Cache, Clipboard, Command, Debug, Element, Event, Mode,
-    MouseCursor, Proxy, Settings, Size, Subscription, UserInterface,
+    window, Cache, Clipboard, Command, Debug, Element, Event, Executor, Mode,
+    MouseCursor, Proxy, Runtime, Settings, Size, Subscription, UserInterface,
 };
-use iced_native::Runtime;
 
 /// An interactive, native cross-platform application.
 ///
@@ -20,6 +19,11 @@ pub trait Application: Sized {
     /// [`Application`]: trait.Application.html
     type Renderer: window::Renderer;
 
+    /// The [`Executor`] that will run commands and subscriptions.
+    ///
+    /// [`Executor`]: trait.Executor.html
+    type Executor: Executor;
+
     /// The type of __messages__ your [`Application`] will produce.
     ///
     /// [`Application`]: trait.Application.html
@@ -110,14 +114,14 @@ pub trait Application: Sized {
 
         debug.startup_started();
         let event_loop = EventLoop::with_user_event();
-        let mut runtime = {
-            let thread_pool = futures::executor::ThreadPool::new()
-                .expect("Create thread pool");
-
-            Runtime::new(thread_pool, Proxy::new(event_loop.create_proxy()))
-        };
         let mut external_messages = Vec::new();
 
+        let mut runtime = {
+            let executor = Self::Executor::new().expect("Create executor");
+
+            Runtime::new(executor, Proxy::new(event_loop.create_proxy()))
+        };
+
         let (mut application, init_command) = Self::new();
         runtime.spawn(init_command);
 

winit/src/proxy.rs

@@ -1,4 +1,4 @@
-use futures::{
+use iced_native::futures::{
     task::{Context, Poll},
     Sink,
 };