chore: improve web support (#36)

Reviewed-on: https://git.reya.su/reya/coop/pulls/36

web/src/lib.rs

@@ -1,7 +1,24 @@
 use gpui::*;
 use ui::Root;
+use universal_time::{Instant, MonotonicClock, SystemTime, WallClock, define_time_provider};
 use wasm_bindgen::prelude::*;
 
+struct CustomTimeProvider;
+
+impl WallClock for CustomTimeProvider {
+    fn system_time(&self) -> SystemTime {
+        SystemTime::from_unix_duration(instant::Duration::from_secs(0))
+    }
+}
+
+impl MonotonicClock for CustomTimeProvider {
+    fn instant(&self) -> Instant {
+        Instant::from_ticks(instant::Duration::from_secs(0))
+    }
+}
+
+define_time_provider!(CustomTimeProvider);
+
 #[wasm_bindgen]
 pub fn run() -> Result<(), JsValue> {
     console_error_panic_hook::set_once();
@@ -15,37 +32,51 @@ pub fn run() -> Result<(), JsValue> {
     #[cfg(target_family = "wasm")]
     gpui_platform::web_init();
 
-    gpui_platform::application().run(|cx| {
+    #[cfg(not(target_family = "wasm"))]
+    let app = gpui_platform::application();
+
+    #[cfg(target_family = "wasm")]
+    let app = {
+        let app = gpui_platform::single_threaded_web();
+
+        // Temporary fix: intentionally leak the `Rc<AppCell>` to keep the application alive
+        struct WasmApplication(std::rc::Rc<AppCell>);
+        let wasm_app = unsafe { std::mem::transmute::<Application, WasmApplication>(app) };
+        std::mem::forget(wasm_app.0.clone());
+        unsafe { std::mem::transmute::<WasmApplication, Application>(wasm_app) }
+    };
+
+    app.run(|cx| {
+        // Open the root window
         cx.open_window(WindowOptions::default(), |window, cx| {
-            cx.new(|cx| {
-                // Initialize components
-                ui::init(cx);
+            // Initialize components
+            ui::init(cx);
 
-                // Initialize theme registry
-                theme::init(cx);
+            // Initialize theme registry
+            theme::init(cx);
 
-                // Initialize settings
-                settings::init(window, cx);
+            // Initialize settings
+            settings::init(window, cx);
 
-                // Initialize the nostr client
-                state::init(window, cx);
+            // Initialize the nostr client
+            state::init(window, cx);
 
-                // Initialize person registry
-                person::init(window, cx);
+            // Initialize person registry
+            person::init(window, cx);
 
-                // Initialize device signer
-                //
-                // NIP-4e: https://github.com/nostr-protocol/nips/blob/per-device-keys/4e.md
-                device::init(window, cx);
+            // Initialize device signer
+            //
+            // NIP-4e: https://github.com/nostr-protocol/nips/blob/per-device-keys/4e.md
+            device::init(window, cx);
 
-                // Initialize app registry
-                chat::init(window, cx);
+            // Initialize app registry
+            chat::init(window, cx);
 
-                // Root Entity
-                Root::new(workspace::init(window, cx).into(), window, cx)
-            })
+            // Root view
+            cx.new(|cx| Root::new(workspace::init(window, cx).into(), window, cx))
         })
         .expect("Failed to open window. Please restart the application.");
+
         cx.activate(true);
     });