зеркало из https://github.com/mozilla/gecko-dev.git
66 строки
2.1 KiB
C++
66 строки
2.1 KiB
C++
/* -*- 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/. */
|
|
|
|
#ifndef mozilla_dom_PromiseNativeHandler_h
|
|
#define mozilla_dom_PromiseNativeHandler_h
|
|
|
|
#include <functional>
|
|
#include "js/TypeDecls.h"
|
|
#include "nsISupports.h"
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
class Promise;
|
|
|
|
/*
|
|
* PromiseNativeHandler allows C++ to react to a Promise being
|
|
* rejected/resolved. A PromiseNativeHandler can be appended to a Promise using
|
|
* Promise::AppendNativeHandler().
|
|
*/
|
|
class PromiseNativeHandler : public nsISupports {
|
|
protected:
|
|
virtual ~PromiseNativeHandler() = default;
|
|
|
|
public:
|
|
MOZ_CAN_RUN_SCRIPT
|
|
virtual void ResolvedCallback(JSContext* aCx,
|
|
JS::Handle<JS::Value> aValue) = 0;
|
|
|
|
MOZ_CAN_RUN_SCRIPT
|
|
virtual void RejectedCallback(JSContext* aCx,
|
|
JS::Handle<JS::Value> aValue) = 0;
|
|
};
|
|
|
|
// This class is used to set C++ callbacks once a dom Promise a resolved or
|
|
// rejected.
|
|
class DomPromiseListener final : public PromiseNativeHandler {
|
|
NS_DECL_ISUPPORTS
|
|
|
|
public:
|
|
using CallbackTypeResolved =
|
|
std::function<void(JSContext*, JS::Handle<JS::Value>)>;
|
|
using CallbackTypeRejected = std::function<void(nsresult)>;
|
|
|
|
explicit DomPromiseListener(Promise* aDOMPromise);
|
|
DomPromiseListener(Promise* aDOMPromise, CallbackTypeResolved&& aResolve,
|
|
CallbackTypeRejected&& aReject);
|
|
void SetResolvers(CallbackTypeResolved&& aResolve,
|
|
CallbackTypeRejected&& aReject);
|
|
void ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override;
|
|
void RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override;
|
|
|
|
private:
|
|
~DomPromiseListener();
|
|
Maybe<CallbackTypeResolved> mResolve;
|
|
Maybe<CallbackTypeRejected> mReject;
|
|
};
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_dom_PromiseNativeHandler_h
|