mirror of
https://github.com/classilla/tenfourfox.git
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195 lines
5.7 KiB
C++
195 lines
5.7 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 "mozilla/AsyncEventDispatcher.h"
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#include "mozilla/dom/PresentationReceiverBinding.h"
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#include "mozilla/dom/Promise.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsIPresentationService.h"
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#include "nsServiceManagerUtils.h"
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#include "PresentationReceiver.h"
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#include "PresentationConnection.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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NS_IMPL_CYCLE_COLLECTION_CLASS(PresentationReceiver)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(PresentationReceiver, DOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mConnections)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPendingGetConnectionPromises)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(PresentationReceiver, DOMEventTargetHelper)
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tmp->Shutdown();
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mConnections)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mPendingGetConnectionPromises)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_ADDREF_INHERITED(PresentationReceiver, DOMEventTargetHelper)
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NS_IMPL_RELEASE_INHERITED(PresentationReceiver, DOMEventTargetHelper)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(PresentationReceiver)
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NS_INTERFACE_MAP_ENTRY(nsIPresentationRespondingListener)
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NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
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/* static */ already_AddRefed<PresentationReceiver>
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PresentationReceiver::Create(nsPIDOMWindow* aWindow,
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const nsAString& aSessionId)
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{
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RefPtr<PresentationReceiver> receiver = new PresentationReceiver(aWindow);
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return NS_WARN_IF(!receiver->Init(aSessionId)) ? nullptr : receiver.forget();
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}
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PresentationReceiver::PresentationReceiver(nsPIDOMWindow* aWindow)
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: DOMEventTargetHelper(aWindow)
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{
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}
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PresentationReceiver::~PresentationReceiver()
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{
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Shutdown();
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}
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bool
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PresentationReceiver::Init(const nsAString& aSessionId)
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{
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if (NS_WARN_IF(!GetOwner())) {
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return false;
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}
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mWindowId = GetOwner()->WindowID();
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if (!aSessionId.IsEmpty()) {
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nsresult rv = NotifySessionConnect(mWindowId, aSessionId);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return false;
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}
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}
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// Register listener for incoming sessions.
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nsCOMPtr<nsIPresentationService> service =
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do_GetService(PRESENTATION_SERVICE_CONTRACTID);
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if (NS_WARN_IF(!service)) {
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return false;
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}
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nsresult rv = service->RegisterRespondingListener(mWindowId, this);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return false;
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}
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return true;
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}
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void PresentationReceiver::Shutdown()
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{
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mConnections.Clear();
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mPendingGetConnectionPromises.Clear();
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// Unregister listener for incoming sessions.
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nsCOMPtr<nsIPresentationService> service =
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do_GetService(PRESENTATION_SERVICE_CONTRACTID);
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if (NS_WARN_IF(!service)) {
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return;
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}
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nsresult rv = service->UnregisterRespondingListener(mWindowId);
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NS_WARN_IF(NS_FAILED(rv));
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}
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/* virtual */ void
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PresentationReceiver::DisconnectFromOwner()
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{
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Shutdown();
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DOMEventTargetHelper::DisconnectFromOwner();
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}
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/* virtual */ JSObject*
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PresentationReceiver::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto)
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{
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return PresentationReceiverBinding::Wrap(aCx, this, aGivenProto);
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}
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already_AddRefed<Promise>
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PresentationReceiver::GetConnection(ErrorResult& aRv)
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{
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nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetOwner());
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if (NS_WARN_IF(!global)) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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RefPtr<Promise> promise = Promise::Create(global, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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// If there's no existing connection, leave the promise pending until a
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// connecting request arrives from the controlling browsing context (sender).
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// http://w3c.github.io/presentation-api/#dom-presentation-getconnection
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if (!mConnections.IsEmpty()) {
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promise->MaybeResolve(mConnections[0]);
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} else {
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mPendingGetConnectionPromises.AppendElement(promise);
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}
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return promise.forget();
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}
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already_AddRefed<Promise>
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PresentationReceiver::GetConnections(ErrorResult& aRv) const
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{
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nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetOwner());
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if (NS_WARN_IF(!global)) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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RefPtr<Promise> promise = Promise::Create(global, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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promise->MaybeResolve(mConnections);
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return promise.forget();
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}
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NS_IMETHODIMP
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PresentationReceiver::NotifySessionConnect(uint64_t aWindowId,
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const nsAString& aSessionId)
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{
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if (NS_WARN_IF(aWindowId != GetOwner()->WindowID())) {
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return NS_ERROR_INVALID_ARG;
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}
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RefPtr<PresentationConnection> connection =
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PresentationConnection::Create(GetOwner(), aSessionId,
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PresentationConnectionState::Closed);
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if (NS_WARN_IF(!connection)) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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mConnections.AppendElement(connection);
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// Resolve pending |GetConnection| promises if any.
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if (!mPendingGetConnectionPromises.IsEmpty()) {
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for(uint32_t i = 0; i < mPendingGetConnectionPromises.Length(); i++) {
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mPendingGetConnectionPromises[i]->MaybeResolve(connection);
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}
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mPendingGetConnectionPromises.Clear();
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}
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return DispatchConnectionAvailableEvent();
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}
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nsresult
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PresentationReceiver::DispatchConnectionAvailableEvent()
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{
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RefPtr<AsyncEventDispatcher> asyncDispatcher =
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new AsyncEventDispatcher(this, NS_LITERAL_STRING("connectionavailable"), false);
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return asyncDispatcher->PostDOMEvent();
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}
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