зеркало из https://github.com/mozilla/gecko-dev.git
126 строки
2.9 KiB
C++
126 строки
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/PermissionStatus.h"
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#include "mozilla/AsyncEventDispatcher.h"
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#include "mozilla/Services.h"
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#include "nsIPermissionManager.h"
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#include "PermissionObserver.h"
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#include "PermissionUtils.h"
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namespace mozilla {
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namespace dom {
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/* static */ already_AddRefed<PermissionStatus>
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PermissionStatus::Create(nsPIDOMWindow* aWindow,
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PermissionName aName,
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ErrorResult& aRv)
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{
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RefPtr<PermissionStatus> status = new PermissionStatus(aWindow, aName);
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aRv = status->Init();
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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return status.forget();
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}
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PermissionStatus::PermissionStatus(nsPIDOMWindow* aWindow,
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PermissionName aName)
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: DOMEventTargetHelper(aWindow)
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, mName(aName)
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, mState(PermissionState::Denied)
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{
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}
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nsresult
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PermissionStatus::Init()
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{
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mObserver = PermissionObserver::GetInstance();
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if (NS_WARN_IF(!mObserver)) {
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return NS_ERROR_FAILURE;
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}
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mObserver->AddSink(this);
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nsresult rv = UpdateState();
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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return NS_OK;
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}
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PermissionStatus::~PermissionStatus()
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{
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if (mObserver) {
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mObserver->RemoveSink(this);
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}
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}
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JSObject*
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PermissionStatus::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return PermissionStatusBinding::Wrap(aCx, this, aGivenProto);
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}
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nsresult
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PermissionStatus::UpdateState()
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{
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nsCOMPtr<nsIPermissionManager> permMgr = services::GetPermissionManager();
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if (NS_WARN_IF(!permMgr)) {
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return NS_ERROR_FAILURE;
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}
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nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(GetOwner());
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if (NS_WARN_IF(!window)) {
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return NS_ERROR_FAILURE;
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}
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uint32_t action = nsIPermissionManager::DENY_ACTION;
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nsresult rv = permMgr->TestPermissionFromWindow(window,
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PermissionNameToType(mName),
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&action);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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mState = ActionToPermissionState(action);
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return NS_OK;
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}
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nsIPrincipal*
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PermissionStatus::GetPrincipal() const
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{
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nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(GetOwner());
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if (NS_WARN_IF(!window)) {
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return nullptr;
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}
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nsIDocument* doc = window->GetExtantDoc();
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if (NS_WARN_IF(!doc)) {
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return nullptr;
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}
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return doc->NodePrincipal();
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}
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void
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PermissionStatus::PermissionChanged()
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{
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auto oldState = mState;
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UpdateState();
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if (mState != oldState) {
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RefPtr<AsyncEventDispatcher> eventDispatcher =
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new AsyncEventDispatcher(this, NS_LITERAL_STRING("change"), false);
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eventDispatcher->PostDOMEvent();
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}
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}
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} // namespace dom
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} // namespace mozilla
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