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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
#include "CookieStoreNotificationWatcher.h"
#include "mozilla/Services.h"
#include "mozilla/Unused.h"
#include "nsICookie.h"
#include "nsICookieNotification.h"
#include "nsIObserverService.h"
namespace mozilla::dom {
NS_IMPL_ISUPPORTS(CookieStoreNotificationWatcher, nsIObserver,
nsISupportsWeakReference)
// static
already_AddRefed<CookieStoreNotificationWatcher>
CookieStoreNotificationWatcher::Create(bool aPrivateBrowsing) {
MOZ_ASSERT(NS_IsMainThread());
RefPtr<CookieStoreNotificationWatcher> watcher =
new CookieStoreNotificationWatcher();
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
if (NS_WARN_IF(!os)) {
return nullptr;
}
nsresult rv = os->AddObserver(
watcher, aPrivateBrowsing ? "private-cookie-changed" : "cookie-changed",
true);
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
return watcher.forget();
}
NS_IMETHODIMP
CookieStoreNotificationWatcher::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData) {
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsICookieNotification> notification = do_QueryInterface(aSubject);
NS_ENSURE_TRUE(notification, NS_ERROR_FAILURE);
nsID* operationID = nullptr;
nsresult rv = notification->GetOperationID(&operationID);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_OK;
}
if (!operationID) {
return NS_OK;
}
for (uint32_t i = 0; i < mPendingOperations.Length(); ++i) {
PendingOperation& pendingOperation = mPendingOperations[i];
if (pendingOperation.mOperationID.Equals(*operationID)) {
pendingOperation.mCallback();
mPendingOperations.RemoveElementAt(i);
break;
}
}
return NS_OK;
}
void CookieStoreNotificationWatcher::CallbackWhenNotified(
const nsID& aOperationID, MoveOnlyFunction<void()> aCallback) {
MOZ_ASSERT(NS_IsMainThread());
mPendingOperations.AppendElement(
PendingOperation{std::move(aCallback), aOperationID});
}
void CookieStoreNotificationWatcher::ForgetOperationID(
const nsID& aOperationID) {
MOZ_ASSERT(NS_IsMainThread());
for (uint32_t i = 0; i < mPendingOperations.Length(); ++i) {
PendingOperation& pendingOperation = mPendingOperations[i];
if (pendingOperation.mOperationID.Equals(aOperationID)) {
mPendingOperations.RemoveElementAt(i);
return;
}
}
}
// static
void CookieStoreNotificationWatcher::ReleaseOnMainThread(
already_AddRefed<CookieStoreNotificationWatcher> aWatcher) {
RefPtr<CookieStoreNotificationWatcher> watcher(aWatcher);
if (!watcher || NS_IsMainThread()) {
return;
}
class ReleaseWatcher final : public Runnable {
public:
explicit ReleaseWatcher(
already_AddRefed<CookieStoreNotificationWatcher> aWatcher)
: Runnable("ReleaseWatcher"), mDoomed(std::move(aWatcher)) {}
NS_IMETHOD Run() override {
mDoomed = nullptr;
return NS_OK;
}
private:
~ReleaseWatcher() {
// If we still have to release the watcher, better to leak it.
if (mDoomed) {
Unused << mDoomed.forget().take();
}
}
RefPtr<CookieStoreNotificationWatcher> mDoomed;
};
RefPtr<ReleaseWatcher> runnable(new ReleaseWatcher(watcher.forget()));
NS_DispatchToMainThread(runnable);
}
} // namespace mozilla::dom