gecko-dev/dom/base/DOMRequest.h

120 строки
3.0 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_domrequest_h__
#define mozilla_dom_domrequest_h__
#include "nsIDOMDOMRequest.h"
#include "mozilla/Attributes.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/dom/DOMError.h"
#include "mozilla/dom/DOMRequestBinding.h"
#include "nsCOMPtr.h"
namespace mozilla {
class ErrorResult;
namespace dom {
class AnyCallback;
class Promise;
class DOMRequest : public DOMEventTargetHelper,
public nsIDOMDOMRequest
{
protected:
JS::Heap<JS::Value> mResult;
RefPtr<DOMError> mError;
RefPtr<Promise> mPromise;
bool mDone;
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSIDOMDOMREQUEST
NS_REALLY_FORWARD_NSIDOMEVENTTARGET(DOMEventTargetHelper)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(DOMRequest,
DOMEventTargetHelper)
// WrapperCache
nsPIDOMWindow* GetParentObject() const
{
return GetOwner();
}
virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
// WebIDL Interface
DOMRequestReadyState ReadyState() const
{
return mDone ? DOMRequestReadyState::Done
: DOMRequestReadyState::Pending;
}
void GetResult(JSContext*, JS::MutableHandle<JS::Value> aRetval) const
{
NS_ASSERTION(mDone || mResult.isUndefined(),
"Result should be undefined when pending");
JS::ExposeValueToActiveJS(mResult);
aRetval.set(mResult);
}
DOMError* GetError() const
{
NS_ASSERTION(mDone || !mError,
"Error should be null when pending");
return mError;
}
IMPL_EVENT_HANDLER(success)
IMPL_EVENT_HANDLER(error)
already_AddRefed<mozilla::dom::Promise>
Then(JSContext* aCx, AnyCallback* aResolveCallback,
AnyCallback* aRejectCallback, mozilla::ErrorResult& aRv);
void FireSuccess(JS::Handle<JS::Value> aResult);
void FireError(const nsAString& aError);
void FireError(nsresult aError);
void FireDetailedError(DOMError* aError);
explicit DOMRequest(nsPIDOMWindow* aWindow);
explicit DOMRequest(nsIGlobalObject* aGlobal);
protected:
virtual ~DOMRequest();
void FireEvent(const nsAString& aType, bool aBubble, bool aCancelable);
void RootResultVal();
};
class DOMRequestService final : public nsIDOMRequestService
{
~DOMRequestService() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMREQUESTSERVICE
// Returns an owning reference! No one should call this but the factory.
static DOMRequestService* FactoryCreate()
{
DOMRequestService* res = new DOMRequestService;
NS_ADDREF(res);
return res;
}
};
} // namespace dom
} // namespace mozilla
#define DOMREQUEST_SERVICE_CONTRACTID "@mozilla.org/dom/dom-request-service;1"
#endif // mozilla_dom_domrequest_h__