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https://gitlab.winehq.org/wine/wine-gecko.git
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1d962eb79e
This is implemented by creating a Promise object internally and forwarding the .then() call to it. Any further callbacks passed to future .then() calls will be added as callbacks on the same internal promise object. We also take care of resolving or rejecting the promise if the success/error event of the DOMRequest object has been fired before .then() is called.
119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_domrequest_h__
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#define mozilla_dom_domrequest_h__
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#include "nsIDOMDOMRequest.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/DOMEventTargetHelper.h"
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#include "mozilla/dom/DOMError.h"
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#include "mozilla/dom/DOMRequestBinding.h"
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#include "nsCOMPtr.h"
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namespace mozilla {
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class ErrorResult;
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namespace dom {
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class AnyCallback;
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class Promise;
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class DOMRequest : public DOMEventTargetHelper,
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public nsIDOMDOMRequest
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{
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protected:
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JS::Heap<JS::Value> mResult;
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nsRefPtr<DOMError> mError;
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nsRefPtr<Promise> mPromise;
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bool mDone;
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_NSIDOMDOMREQUEST
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NS_REALLY_FORWARD_NSIDOMEVENTTARGET(DOMEventTargetHelper)
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(DOMRequest,
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DOMEventTargetHelper)
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// WrapperCache
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nsPIDOMWindow* GetParentObject() const
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{
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return GetOwner();
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}
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virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
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// WebIDL Interface
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DOMRequestReadyState ReadyState() const
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{
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return mDone ? DOMRequestReadyState::Done
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: DOMRequestReadyState::Pending;
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}
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void GetResult(JSContext*, JS::MutableHandle<JS::Value> aRetval) const
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{
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NS_ASSERTION(mDone || mResult == JSVAL_VOID,
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"Result should be undefined when pending");
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JS::ExposeValueToActiveJS(mResult);
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aRetval.set(mResult);
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}
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DOMError* GetError() const
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{
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NS_ASSERTION(mDone || !mError,
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"Error should be null when pending");
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return mError;
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}
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IMPL_EVENT_HANDLER(success)
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IMPL_EVENT_HANDLER(error)
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already_AddRefed<mozilla::dom::Promise>
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Then(JSContext* aCx, AnyCallback* aResolveCallback,
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AnyCallback* aRejectCallback, mozilla::ErrorResult& aRv);
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void FireSuccess(JS::Handle<JS::Value> aResult);
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void FireError(const nsAString& aError);
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void FireError(nsresult aError);
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void FireDetailedError(DOMError* aError);
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explicit DOMRequest(nsPIDOMWindow* aWindow);
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protected:
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virtual ~DOMRequest();
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void FireEvent(const nsAString& aType, bool aBubble, bool aCancelable);
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void RootResultVal();
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};
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class DOMRequestService MOZ_FINAL : public nsIDOMRequestService
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{
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~DOMRequestService() {}
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIDOMREQUESTSERVICE
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// Returns an owning reference! No one should call this but the factory.
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static DOMRequestService* FactoryCreate()
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{
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DOMRequestService* res = new DOMRequestService;
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NS_ADDREF(res);
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return res;
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}
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};
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} // namespace dom
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} // namespace mozilla
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#define DOMREQUEST_SERVICE_CONTRACTID "@mozilla.org/dom/dom-request-service;1"
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#endif // mozilla_dom_domrequest_h__
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