DeviceLostInfo.h

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

#ifndef GPU_DeviceLostInfo_H_
#define GPU_DeviceLostInfo_H_

#include "mozilla/dom/WebGPUBinding.h"
#include "mozilla/Maybe.h"
#include "nsWrapperCache.h"
#include "ObjectModel.h"

namespace mozilla::webgpu {
class Device;

class DeviceLostInfo final : public nsWrapperCache {
 public:
  GPU_DECL_CYCLE_COLLECTION(DeviceLostInfo)
  GPU_DECL_JS_WRAP(DeviceLostInfo)

  explicit DeviceLostInfo(nsIGlobalObject* const aGlobal,
                          const nsAString& aMessage)
      : mGlobal(aGlobal), mMessage(aMessage) {}
  DeviceLostInfo(nsIGlobalObject* const aGlobal,
                 dom::GPUDeviceLostReason aReason, const nsAString& aMessage)
      : mGlobal(aGlobal), mReason(Some(aReason)), mMessage(aMessage) {}

 private:
  ~DeviceLostInfo() = default;
  void Cleanup() {}

  nsCOMPtr<nsIGlobalObject> mGlobal;
  const Maybe<dom::GPUDeviceLostReason> mReason;
  const nsAutoString mMessage;

 public:
  void GetReason(JSContext* aCx, JS::MutableHandle<JS::Value> aRetval) {
    if (!mReason || !dom::ToJSValue(aCx, mReason.value(), aRetval)) {
      aRetval.setUndefined();
    }
  }

  void GetMessage(nsAString& aValue) const { aValue = mMessage; }

  nsIGlobalObject* GetParentObject() const { return mGlobal; }
};

}  // namespace mozilla::webgpu

#endif  // GPU_DeviceLostInfo_H_