1 files changed, 80 insertions, 0 deletions
diff --git a/dom/gamepad/GamepadHapticActuator.cpp b/dom/gamepad/GamepadHapticActuator.cpp
new file mode 100644
index 0000000000..462e386c8e
--- /dev/null
+++ b/dom/gamepad/GamepadHapticActuator.cpp
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "mozilla/dom/GamepadHapticActuator.h"
+#include "mozilla/dom/GamepadManager.h"
+#include "mozilla/dom/Promise.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(GamepadHapticActuator)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(GamepadHapticActuator)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(GamepadHapticActuator)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(GamepadHapticActuator, mParent)
+
+GamepadHapticActuator::GamepadHapticActuator(nsISupports* aParent,
+                                             GamepadHandle aGamepadHandle,
+                                             uint32_t aIndex)
+    : mParent(aParent),
+      mGamepadHandle(aGamepadHandle),
+      mType(GamepadHapticActuatorType::Vibration),
+      mIndex(aIndex) {}
+
+/* virtual */
+JSObject* GamepadHapticActuator::WrapObject(JSContext* aCx,
+                                            JS::Handle<JSObject*> aGivenProto) {
+  return GamepadHapticActuator_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+nsISupports* GamepadHapticActuator::GetParentObject() const { return mParent; }
+
+#define CLAMP(f, min, max) (((f) < min) ? min : (((f) > max) ? max : (f)))
+
+already_AddRefed<Promise> GamepadHapticActuator::Pulse(double aValue,
+                                                       double aDuration,
+                                                       ErrorResult& aRv) {
+  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetParentObject());
+  MOZ_ASSERT(global);
+
+  RefPtr<GamepadManager> gamepadManager(GamepadManager::GetService());
+  MOZ_ASSERT(gamepadManager);
+
+  // Clamp intensity aValue to be 0~1.
+  double value = CLAMP(aValue, 0, 1);
+  // aDuration should be always positive.
+  double duration = CLAMP(aDuration, 0, aDuration);
+
+  switch (mType) {
+    case GamepadHapticActuatorType::Vibration: {
+      RefPtr<Promise> promise = gamepadManager->VibrateHaptic(
+          mGamepadHandle, mIndex, value, duration, global, aRv);
+      if (!promise) {
+        return nullptr;
+      }
+      return promise.forget();
+    }
+    default: {
+      // We need to implement other types of haptic
+      MOZ_ASSERT(false);
+      return nullptr;
+    }
+  }
+}
+
+GamepadHapticActuatorType GamepadHapticActuator::Type() const { return mType; }
+
+void GamepadHapticActuator::Set(const GamepadHapticActuator* aOther) {
+  mGamepadHandle = aOther->mGamepadHandle;
+  mType = aOther->mType;
+  mIndex = aOther->mIndex;
+}
+
+}  // namespace mozilla::dom