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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/base/DOMRequest.cpp
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/base/DOMRequest.cpp')
-rw-r--r--dom/base/DOMRequest.cpp256
1 files changed, 256 insertions, 0 deletions
diff --git a/dom/base/DOMRequest.cpp b/dom/base/DOMRequest.cpp
new file mode 100644
index 0000000000..93c1d75d89
--- /dev/null
+++ b/dom/base/DOMRequest.cpp
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+/* -*- 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/. */
+
+#include "DOMRequest.h"
+
+#include "DOMException.h"
+#include "nsThreadUtils.h"
+#include "mozilla/HoldDropJSObjects.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/Promise.h"
+#include "mozilla/dom/ScriptSettings.h"
+#include "jsfriendapi.h"
+#include "nsContentUtils.h"
+
+using mozilla::dom::AnyCallback;
+using mozilla::dom::AutoJSAPI;
+using mozilla::dom::DOMException;
+using mozilla::dom::DOMRequest;
+using mozilla::dom::DOMRequestService;
+using mozilla::dom::Promise;
+using mozilla::dom::RootingCx;
+
+DOMRequest::DOMRequest(nsPIDOMWindowInner* aWindow)
+ : DOMEventTargetHelper(aWindow),
+ mResult(JS::UndefinedValue()),
+ mDone(false) {}
+
+DOMRequest::DOMRequest(nsIGlobalObject* aGlobal)
+ : DOMEventTargetHelper(aGlobal),
+ mResult(JS::UndefinedValue()),
+ mDone(false) {}
+
+DOMRequest::~DOMRequest() { mozilla::DropJSObjects(this); }
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED_WITH_JS_MEMBERS(DOMRequest,
+ DOMEventTargetHelper,
+ (mError, mPromise),
+ (mResult))
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMRequest)
+NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
+
+NS_IMPL_ADDREF_INHERITED(DOMRequest, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(DOMRequest, DOMEventTargetHelper)
+
+/* virtual */
+JSObject* DOMRequest::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return DOMRequest_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void DOMRequest::FireSuccess(JS::Handle<JS::Value> aResult) {
+ NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!");
+ NS_ASSERTION(!mError, "mError shouldn't have been set!");
+ NS_ASSERTION(mResult.isUndefined(), "mResult shouldn't have been set!");
+
+ mDone = true;
+ if (aResult.isGCThing()) {
+ RootResultVal();
+ }
+ mResult = aResult;
+
+ FireEvent(u"success"_ns, false, false);
+
+ if (mPromise) {
+ mPromise->MaybeResolve(mResult);
+ }
+}
+
+void DOMRequest::FireError(const nsAString& aError) {
+ NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!");
+ NS_ASSERTION(!mError, "mError shouldn't have been set!");
+ NS_ASSERTION(mResult.isUndefined(), "mResult shouldn't have been set!");
+
+ mDone = true;
+ // XXX Error code chosen arbitrarily
+ mError = DOMException::Create(NS_ERROR_DOM_UNKNOWN_ERR,
+ NS_ConvertUTF16toUTF8(aError));
+
+ FireEvent(u"error"_ns, true, true);
+
+ if (mPromise) {
+ mPromise->MaybeRejectBrokenly(mError);
+ }
+}
+
+void DOMRequest::FireError(nsresult aError) {
+ NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!");
+ NS_ASSERTION(!mError, "mError shouldn't have been set!");
+ NS_ASSERTION(mResult.isUndefined(), "mResult shouldn't have been set!");
+
+ mDone = true;
+ mError = DOMException::Create(aError);
+
+ FireEvent(u"error"_ns, true, true);
+
+ if (mPromise) {
+ mPromise->MaybeRejectBrokenly(mError);
+ }
+}
+
+void DOMRequest::FireDetailedError(DOMException& aError) {
+ NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!");
+ NS_ASSERTION(!mError, "mError shouldn't have been set!");
+ NS_ASSERTION(mResult.isUndefined(), "mResult shouldn't have been set!");
+
+ mDone = true;
+ mError = &aError;
+
+ FireEvent(u"error"_ns, true, true);
+
+ if (mPromise) {
+ mPromise->MaybeRejectBrokenly(mError);
+ }
+}
+
+void DOMRequest::FireEvent(const nsAString& aType, bool aBubble,
+ bool aCancelable) {
+ if (NS_FAILED(CheckCurrentGlobalCorrectness())) {
+ return;
+ }
+
+ RefPtr<Event> event = NS_NewDOMEvent(this, nullptr, nullptr);
+ event->InitEvent(aType, aBubble, aCancelable);
+ event->SetTrusted(true);
+
+ DispatchEvent(*event);
+}
+
+void DOMRequest::RootResultVal() { mozilla::HoldJSObjects(this); }
+
+void DOMRequest::Then(JSContext* aCx, AnyCallback* aResolveCallback,
+ AnyCallback* aRejectCallback,
+ JS::MutableHandle<JS::Value> aRetval,
+ mozilla::ErrorResult& aRv) {
+ if (!mPromise) {
+ mPromise = Promise::Create(DOMEventTargetHelper::GetParentObject(), aRv);
+ if (aRv.Failed()) {
+ return;
+ }
+ if (mDone) {
+ // Since we create mPromise lazily, it's possible that the DOMRequest
+ // object has already fired its success/error event. In that case we
+ // should manually resolve/reject mPromise here. mPromise will take care
+ // of calling the callbacks on |promise| as needed.
+ if (mError) {
+ mPromise->MaybeRejectBrokenly(mError);
+ } else {
+ mPromise->MaybeResolve(mResult);
+ }
+ }
+ }
+
+ // Just use the global of the Promise itself as the callee global.
+ JS::Rooted<JSObject*> global(aCx, mPromise->PromiseObj());
+ global = JS::GetNonCCWObjectGlobal(global);
+ mPromise->Then(aCx, global, aResolveCallback, aRejectCallback, aRetval, aRv);
+}
+
+NS_IMPL_ISUPPORTS(DOMRequestService, nsIDOMRequestService)
+
+NS_IMETHODIMP
+DOMRequestService::CreateRequest(mozIDOMWindow* aWindow,
+ DOMRequest** aRequest) {
+ MOZ_ASSERT(NS_IsMainThread());
+ NS_ENSURE_STATE(aWindow);
+ auto* win = nsPIDOMWindowInner::From(aWindow);
+ RefPtr<DOMRequest> req = new DOMRequest(win);
+ req.forget(aRequest);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+DOMRequestService::FireSuccess(DOMRequest* aRequest,
+ JS::Handle<JS::Value> aResult) {
+ NS_ENSURE_STATE(aRequest);
+ aRequest->FireSuccess(aResult);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+DOMRequestService::FireError(DOMRequest* aRequest, const nsAString& aError) {
+ NS_ENSURE_STATE(aRequest);
+ aRequest->FireError(aError);
+
+ return NS_OK;
+}
+
+class FireSuccessAsyncTask : public mozilla::Runnable {
+ FireSuccessAsyncTask(DOMRequest* aRequest, const JS::Value& aResult)
+ : mozilla::Runnable("FireSuccessAsyncTask"),
+ mReq(aRequest),
+ mResult(RootingCx(), aResult) {}
+
+ public:
+ // Due to the fact that initialization can fail during shutdown (since we
+ // can't fetch a js context), set up an initiatization function to make sure
+ // we can return the failure appropriately
+ static nsresult Dispatch(DOMRequest* aRequest, const JS::Value& aResult) {
+ RefPtr<FireSuccessAsyncTask> asyncTask =
+ new FireSuccessAsyncTask(aRequest, aResult);
+ MOZ_ALWAYS_SUCCEEDS(NS_DispatchToCurrentThread(asyncTask));
+ return NS_OK;
+ }
+
+ NS_IMETHOD
+ Run() override {
+ mReq->FireSuccess(
+ JS::Handle<JS::Value>::fromMarkedLocation(mResult.address()));
+ return NS_OK;
+ }
+
+ private:
+ RefPtr<DOMRequest> mReq;
+ JS::PersistentRooted<JS::Value> mResult;
+};
+
+class FireErrorAsyncTask : public mozilla::Runnable {
+ public:
+ FireErrorAsyncTask(DOMRequest* aRequest, const nsAString& aError)
+ : mozilla::Runnable("FireErrorAsyncTask"),
+ mReq(aRequest),
+ mError(aError) {}
+
+ NS_IMETHOD
+ Run() override {
+ mReq->FireError(mError);
+ return NS_OK;
+ }
+
+ private:
+ RefPtr<DOMRequest> mReq;
+ nsString mError;
+};
+
+NS_IMETHODIMP
+DOMRequestService::FireSuccessAsync(DOMRequest* aRequest,
+ JS::Handle<JS::Value> aResult) {
+ NS_ENSURE_STATE(aRequest);
+ return FireSuccessAsyncTask::Dispatch(aRequest, aResult);
+}
+
+NS_IMETHODIMP
+DOMRequestService::FireErrorAsync(DOMRequest* aRequest,
+ const nsAString& aError) {
+ NS_ENSURE_STATE(aRequest);
+ nsCOMPtr<nsIRunnable> asyncTask = new FireErrorAsyncTask(aRequest, aError);
+ MOZ_ALWAYS_SUCCEEDS(NS_DispatchToCurrentThread(asyncTask));
+ return NS_OK;
+}