PromiseNativeWrapper.h

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/* 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 mozilla_PromiseNativeWrapper_h__

#define mozilla_PromiseNativeWrapper_h__

#include "mozilla/MozPromise.h"

#include "mozilla/dom/Promise.h"

#include "nsISupports.h"

#include "mozilla/dom/PromiseNativeHandler.h"

namespace mozilla {

// Helper for wrapping JS promises in MozPromise so they can be handled from C++

// side.

class PromiseNativeWrapper : public dom::PromiseNativeHandler {

 public:

  NS_DECL_ISUPPORTS

  explicit PromiseNativeWrapper(

      MozPromiseHolder<GenericNonExclusivePromise>&& aHolder)

      : mHolder(std::move(aHolder)) {}

  void ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue,

                        ErrorResult& aRv) override {

    mHolder.Resolve(true, __func__);

  void RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue,

                        ErrorResult& aRv) override {

    mHolder.Reject(NS_ERROR_FAILURE, __func__);

  static RefPtr<GenericNonExclusivePromise> ConvertJSPromiseToMozPromise(

      const RefPtr<dom::Promise>& jsPromise);

 private:

  ~PromiseNativeWrapper() = default;

  MozPromiseHolder<GenericNonExclusivePromise> mHolder;

};

}  // namespace mozilla

#endif