Draft web platform structure

src/platform_impl/web/event_loop/proxy.rs

@@ -0,0 +1,19 @@
+use super::runner;
+use crate::event::Event;
+use crate::event_loop::EventLoopClosed;
+
+#[derive(Clone)]
+pub struct Proxy<T: 'static> {
+    runner: runner::Shared<T>,
+}
+
+impl<T: 'static> Proxy<T> {
+    pub fn new(runner: runner::Shared<T>) -> Self {
+        Proxy { runner }
+    }
+
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed> {
+        self.runner.send_event(Event::UserEvent(event));
+        Ok(())
+    }
+}