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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 "mozilla/PermissionDelegateHandler.h"
#include "mozilla/AsyncEventDispatcher.h"
#include "mozilla/Permission.h"
#include "mozilla/Services.h"
#include "nsIPermissionManager.h"
#include "PermissionObserver.h"
#include "PermissionUtils.h"
namespace mozilla {
namespace dom {
/* static */
already_AddRefed<PermissionStatus> PermissionStatus::Create(
nsPIDOMWindowInner* aWindow, PermissionName aName, ErrorResult& aRv) {
RefPtr<PermissionStatus> status = new PermissionStatus(aWindow, aName);
aRv = status->Init();
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
return status.forget();
}
PermissionStatus::PermissionStatus(nsPIDOMWindowInner* aWindow,
PermissionName aName)
: DOMEventTargetHelper(aWindow),
mName(aName),
mState(PermissionState::Denied) {
KeepAliveIfHasListenersFor(u"change"_ns);
}
nsresult PermissionStatus::Init() {
mObserver = PermissionObserver::GetInstance();
if (NS_WARN_IF(!mObserver)) {
return NS_ERROR_FAILURE;
}
mObserver->AddSink(this);
nsresult rv = UpdateState();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
PermissionStatus::~PermissionStatus() {
if (mObserver) {
mObserver->RemoveSink(this);
}
}
JSObject* PermissionStatus::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return PermissionStatus_Binding::Wrap(aCx, this, aGivenProto);
}
nsresult PermissionStatus::UpdateState() {
nsCOMPtr<nsPIDOMWindowInner> window = GetOwner();
if (NS_WARN_IF(!window)) {
return NS_ERROR_FAILURE;
}
RefPtr<Document> document = window->GetExtantDoc();
if (NS_WARN_IF(!document)) {
return NS_ERROR_FAILURE;
}
uint32_t action = nsIPermissionManager::DENY_ACTION;
PermissionDelegateHandler* permissionHandler =
document->GetPermissionDelegateHandler();
if (NS_WARN_IF(!permissionHandler)) {
return NS_ERROR_FAILURE;
}
nsresult rv = permissionHandler->GetPermissionForPermissionsAPI(
PermissionNameToType(mName), &action);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
mState = ActionToPermissionState(action);
return NS_OK;
}
already_AddRefed<nsIPrincipal> PermissionStatus::GetPrincipal() const {
nsCOMPtr<nsPIDOMWindowInner> window = GetOwner();
if (NS_WARN_IF(!window)) {
return nullptr;
}
Document* doc = window->GetExtantDoc();
if (NS_WARN_IF(!doc)) {
return nullptr;
}
nsCOMPtr<nsIPrincipal> principal =
Permission::ClonePrincipalForPermission(doc->NodePrincipal());
NS_ENSURE_TRUE(principal, nullptr);
return principal.forget();
}
void PermissionStatus::PermissionChanged() {
auto oldState = mState;
UpdateState();
if (mState != oldState) {
RefPtr<AsyncEventDispatcher> eventDispatcher =
new AsyncEventDispatcher(this, u"change"_ns, CanBubble::eNo);
eventDispatcher->PostDOMEvent();
}
}
void PermissionStatus::DisconnectFromOwner() {
IgnoreKeepAliveIfHasListenersFor(u"change"_ns);
if (mObserver) {
mObserver->RemoveSink(this);
mObserver = nullptr;
}
DOMEventTargetHelper::DisconnectFromOwner();
}
} // namespace dom
} // namespace mozilla