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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/AsyncEventDispatcher.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)
{
}
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 PermissionStatusBinding::Wrap(aCx, this, aGivenProto);
}
nsresult
PermissionStatus::UpdateState()
{
nsCOMPtr<nsIPermissionManager> permMgr = services::GetPermissionManager();
if (NS_WARN_IF(!permMgr)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsPIDOMWindowInner> window = GetOwner();
if (NS_WARN_IF(!window)) {
return NS_ERROR_FAILURE;
}
uint32_t action = nsIPermissionManager::DENY_ACTION;
nsresult rv = permMgr->TestPermissionFromWindow(window,
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;
}
nsIDocument* doc = window->GetExtantDoc();
if (NS_WARN_IF(!doc)) {
return nullptr;
}
nsCOMPtr<nsIPrincipal> principal =
mozilla::BasePrincipal::Cast(doc->NodePrincipal())->CloneStrippingUserContextIdAndFirstPartyDomain();
NS_ENSURE_TRUE(principal, nullptr);
return principal.forget();
}
void
PermissionStatus::PermissionChanged()
{
auto oldState = mState;
UpdateState();
if (mState != oldState) {
RefPtr<AsyncEventDispatcher> eventDispatcher =
new AsyncEventDispatcher(this, NS_LITERAL_STRING("change"), false);
eventDispatcher->PostDOMEvent();
}
}
} // namespace dom
} // namespace mozilla
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