dom/webgpu/DeviceLostInfo.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef GPU_DeviceLostInfo_H_
   7 #define GPU_DeviceLostInfo_H_
   8
   9 #include "mozilla/dom/WebGPUBinding.h"
  10 #include "mozilla/Maybe.h"
  11 #include "nsWrapperCache.h"
  12 #include "ObjectModel.h"
  13
  14 namespace mozilla::webgpu {
  15 class Device;
  16
  17 class DeviceLostInfo final : public nsWrapperCache {
  18  public:
  19   GPU_DECL_CYCLE_COLLECTION(DeviceLostInfo)
  20   GPU_DECL_JS_WRAP(DeviceLostInfo)
  21
  22   explicit DeviceLostInfo(nsIGlobalObject* const aGlobal,
  23                           const nsAString& aMessage)
  24       : mGlobal(aGlobal), mMessage(aMessage) {}
  25   DeviceLostInfo(nsIGlobalObject* const aGlobal,
  26                  dom::GPUDeviceLostReason aReason, const nsAString& aMessage)
  27       : mGlobal(aGlobal), mReason(Some(aReason)), mMessage(aMessage) {}
  28
  29  private:
  30   ~DeviceLostInfo() = default;
  31   void Cleanup() {}
  32
  33   nsCOMPtr<nsIGlobalObject> mGlobal;
  34   const Maybe<dom::GPUDeviceLostReason> mReason;
  35   const nsAutoString mMessage;
  36
  37  public:
  38   void GetReason(JSContext* aCx, JS::MutableHandle<JS::Value> aRetval) {
  39     if (!mReason || !dom::ToJSValue(aCx, mReason.value(), aRetval)) {
  40       aRetval.setUndefined();
  41     }
  42   }
  43
  44   void GetMessage(nsAString& aValue) const { aValue = mMessage; }
  45
  46   nsIGlobalObject* GetParentObject() const { return mGlobal; }
  47 };
  48
  49 }  // namespace mozilla::webgpu
  50
  51 #endif  // GPU_DeviceLostInfo_H_