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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 "mozilla/dom/PermissionStatus.h"
#include "PermissionStatusSink.h"
#include "PermissionUtils.h"
#include "mozilla/AsyncEventDispatcher.h"
#include "mozilla/Permission.h"
#include "mozilla/Services.h"
#include "nsGlobalWindowInner.h"
#include "nsIPermissionManager.h"
namespace mozilla::dom {
PermissionStatus::PermissionStatus(nsIGlobalObject* aGlobal,
PermissionName aName)
: DOMEventTargetHelper(aGlobal),
mName(aName),
mState(PermissionState::Denied) {
KeepAliveIfHasListenersFor(nsGkAtoms::onchange);
}
// https://w3c.github.io/permissions/#onchange-attribute and
// https://w3c.github.io/permissions/#query-method
RefPtr<PermissionStatus::SimplePromise> PermissionStatus::Init() {
mSink = CreateSink();
MOZ_ASSERT(mSink);
return mSink->Init()->Then(
GetCurrentSerialEventTarget(), __func__,
[self = RefPtr(this)](const PermissionStatusSink::PermissionStatePromise::
ResolveOrRejectValue& aResult) {
if (aResult.IsResolve()) {
self->mState = self->ComputeStateFromAction(aResult.ResolveValue());
return SimplePromise::CreateAndResolve(NS_OK, __func__);
}
return SimplePromise::CreateAndReject(aResult.RejectValue(), __func__);
});
}
PermissionStatus::~PermissionStatus() {
if (mSink) {
mSink->Disentangle();
mSink = nullptr;
}
}
JSObject* PermissionStatus::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return PermissionStatus_Binding::Wrap(aCx, this, aGivenProto);
}
nsLiteralCString PermissionStatus::GetPermissionType() const {
return PermissionNameToType(mName);
}
// https://w3c.github.io/permissions/#dfn-permissionstatus-update-steps
void PermissionStatus::PermissionChanged(uint32_t aAction) {
PermissionState newState = ComputeStateFromAction(aAction);
if (mState == newState) {
return;
}
mState = newState;
// Step 4: Queue a task on the permissions task source to fire an
// event named change at status.
RefPtr<AsyncEventDispatcher> eventDispatcher =
new AsyncEventDispatcher(this, u"change"_ns, CanBubble::eNo);
eventDispatcher->PostDOMEvent();
}
void PermissionStatus::DisconnectFromOwner() {
IgnoreKeepAliveIfHasListenersFor(nsGkAtoms::onchange);
if (mSink) {
mSink->Disentangle();
mSink = nullptr;
}
DOMEventTargetHelper::DisconnectFromOwner();
}
void PermissionStatus::GetType(nsACString& aName) const {
aName.Assign(GetPermissionType());
}
already_AddRefed<PermissionStatusSink> PermissionStatus::CreateSink() {
RefPtr<PermissionStatusSink> sink =
new PermissionStatusSink(this, mName, GetPermissionType());
return sink.forget();
}
PermissionState PermissionStatus::ComputeStateFromAction(uint32_t aAction) {
nsCOMPtr<nsIGlobalObject> global = GetOwnerGlobal();
if (NS_WARN_IF(!global)) {
return PermissionState::Denied;
}
return ActionToPermissionState(aAction, mName, global);
}
} // namespace mozilla::dom
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