Implement Gamepad API

components/script/dom/gamepadevent.rs

@@ -0,0 +1,92 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use dom::bindings::codegen::Bindings::EventBinding::EventBinding::EventMethods;
+use dom::bindings::codegen::Bindings::GamepadEventBinding;
+use dom::bindings::codegen::Bindings::GamepadEventBinding::GamepadEventMethods;
+use dom::bindings::error::Fallible;
+use dom::bindings::inheritance::Castable;
+use dom::bindings::js::{JS, Root};
+use dom::bindings::reflector::{DomObject, reflect_dom_object};
+use dom::bindings::str::DOMString;
+use dom::event::Event;
+use dom::gamepad::Gamepad;
+use dom::globalscope::GlobalScope;
+use dom::window::Window;
+use dom_struct::dom_struct;
+use servo_atoms::Atom;
+
+#[dom_struct]
+pub struct GamepadEvent {
+    event: Event,
+    gamepad: JS<Gamepad>,
+}
+
+pub enum GamepadEventType {
+    Connected,
+    Disconnected
+}
+
+impl GamepadEvent {
+    fn new_inherited(gamepad: &Gamepad) -> GamepadEvent {
+        GamepadEvent {
+            event: Event::new_inherited(),
+            gamepad: JS::from_ref(gamepad),
+        }
+    }
+
+    pub fn new(global: &GlobalScope,
+               type_: Atom,
+               bubbles: bool,
+               cancelable: bool,
+               gamepad: &Gamepad)
+               -> Root<GamepadEvent> {
+        let ev = reflect_dom_object(box GamepadEvent::new_inherited(&gamepad),
+                           global,
+                           GamepadEventBinding::Wrap);
+        {
+            let event = ev.upcast::<Event>();
+            event.init_event(type_, bubbles, cancelable);
+        }
+        ev
+    }
+
+    pub fn new_with_type(global: &GlobalScope, event_type: GamepadEventType, gamepad: &Gamepad)
+                         -> Root<GamepadEvent> {
+        let name = match event_type {
+            GamepadEventType::Connected => "gamepadconnected",
+            GamepadEventType::Disconnected => "gamepaddisconnected"
+        };
+
+        GamepadEvent::new(&global,
+                          name.into(),
+                          false,
+                          false,
+                          &gamepad)
+    }
+
+    // https://w3c.github.io/gamepad/#gamepadevent-interface
+    pub fn Constructor(window: &Window,
+                       type_: DOMString,
+                       init: &GamepadEventBinding::GamepadEventInit)
+                       -> Fallible<Root<GamepadEvent>> {
+        Ok(GamepadEvent::new(&window.global(),
+                             Atom::from(type_),
+                             init.parent.bubbles,
+                             init.parent.cancelable,
+                             &init.gamepad))
+    }
+}
+
+impl GamepadEventMethods for GamepadEvent {
+    // https://w3c.github.io/gamepad/#gamepadevent-interface
+    fn Gamepad(&self) -> Root<Gamepad> {
+        Root::from_ref(&*self.gamepad)
+    }
+
+    // https://dom.spec.whatwg.org/#dom-event-istrusted
+    fn IsTrusted(&self) -> bool {
+        self.event.IsTrusted()
+    }
+}