зеркало из https://github.com/mozilla/gecko-dev.git
120 строки
2.9 KiB
C++
120 строки
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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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 "Presentation.h"
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#include <ctype.h>
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#include "mozilla/dom/PresentationBinding.h"
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#include "mozilla/dom/Promise.h"
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#include "nsContentUtils.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsIDocShell.h"
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#include "nsIPresentationService.h"
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#include "nsSandboxFlags.h"
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#include "nsServiceManagerUtils.h"
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#include "PresentationReceiver.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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NS_IMPL_CYCLE_COLLECTION_INHERITED(Presentation, DOMEventTargetHelper,
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mDefaultRequest, mReceiver)
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NS_IMPL_ADDREF_INHERITED(Presentation, DOMEventTargetHelper)
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NS_IMPL_RELEASE_INHERITED(Presentation, DOMEventTargetHelper)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(Presentation)
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NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
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/* static */ already_AddRefed<Presentation>
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Presentation::Create(nsPIDOMWindowInner* aWindow)
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{
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RefPtr<Presentation> presentation = new Presentation(aWindow);
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return presentation.forget();
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}
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Presentation::Presentation(nsPIDOMWindowInner* aWindow)
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: DOMEventTargetHelper(aWindow)
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{
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}
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Presentation::~Presentation()
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{
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}
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/* virtual */ JSObject*
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Presentation::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto)
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{
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return PresentationBinding::Wrap(aCx, this, aGivenProto);
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}
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void
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Presentation::SetDefaultRequest(PresentationRequest* aRequest)
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{
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if (IsInPresentedContent()) {
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return;
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}
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nsCOMPtr<nsIDocument> doc = GetOwner() ? GetOwner()->GetExtantDoc() : nullptr;
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if (NS_WARN_IF(!doc)) {
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return;
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}
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if (doc->GetSandboxFlags() & SANDBOXED_PRESENTATION) {
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return;
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}
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mDefaultRequest = aRequest;
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}
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already_AddRefed<PresentationRequest>
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Presentation::GetDefaultRequest() const
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{
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if (IsInPresentedContent()) {
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return nullptr;
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}
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RefPtr<PresentationRequest> request = mDefaultRequest;
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return request.forget();
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}
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already_AddRefed<PresentationReceiver>
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Presentation::GetReceiver()
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{
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// return the same receiver if already created
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if (mReceiver) {
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RefPtr<PresentationReceiver> receiver = mReceiver;
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return receiver.forget();
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}
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if (!IsInPresentedContent()) {
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return nullptr;
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}
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mReceiver = PresentationReceiver::Create(GetOwner());
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if (NS_WARN_IF(!mReceiver)) {
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MOZ_ASSERT(mReceiver);
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return nullptr;
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}
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RefPtr<PresentationReceiver> receiver = mReceiver;
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return receiver.forget();
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}
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bool
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Presentation::IsInPresentedContent() const
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{
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nsCOMPtr<nsIDocShell> docShell = GetOwner()->GetDocShell();
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MOZ_ASSERT(docShell);
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nsAutoString presentationURL;
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nsContentUtils::GetPresentationURL(docShell, presentationURL);
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return !presentationURL.IsEmpty();
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}
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