import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/presentation/PresentationReceiver.cpp

@@ -0,0 +1,179 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 "PresentationReceiver.h"
+
+#include "mozilla/dom/PresentationReceiverBinding.h"
+#include "mozilla/dom/Promise.h"
+#include "nsContentUtils.h"
+#include "nsIPresentationService.h"
+#include "nsPIDOMWindow.h"
+#include "nsServiceManagerUtils.h"
+#include "nsThreadUtils.h"
+#include "PresentationConnection.h"
+#include "PresentationConnectionList.h"
+#include "PresentationLog.h"
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(PresentationReceiver,
+                                      mOwner,
+                                      mGetConnectionListPromise,
+                                      mConnectionList)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(PresentationReceiver)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(PresentationReceiver)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PresentationReceiver)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsIPresentationRespondingListener)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+/* static */ already_AddRefed<PresentationReceiver>
+PresentationReceiver::Create(nsPIDOMWindowInner* aWindow)
+{
+  RefPtr<PresentationReceiver> receiver = new PresentationReceiver(aWindow);
+  return NS_WARN_IF(!receiver->Init()) ? nullptr : receiver.forget();
+}
+
+PresentationReceiver::PresentationReceiver(nsPIDOMWindowInner* aWindow)
+  : mOwner(aWindow)
+{
+  MOZ_ASSERT(aWindow);
+}
+
+PresentationReceiver::~PresentationReceiver()
+{
+  Shutdown();
+}
+
+bool
+PresentationReceiver::Init()
+{
+  if (NS_WARN_IF(!mOwner)) {
+    return false;
+  }
+  mWindowId = mOwner->WindowID();
+
+  nsCOMPtr<nsIDocShell> docShell = mOwner->GetDocShell();
+  MOZ_ASSERT(docShell);
+
+  nsContentUtils::GetPresentationURL(docShell, mUrl);
+  return !mUrl.IsEmpty();
+}
+
+void PresentationReceiver::Shutdown()
+{
+  PRES_DEBUG("receiver shutdown:windowId[%d]\n", mWindowId);
+
+  // Unregister listener for incoming sessions.
+  nsCOMPtr<nsIPresentationService> service =
+    do_GetService(PRESENTATION_SERVICE_CONTRACTID);
+  if (NS_WARN_IF(!service)) {
+    return;
+  }
+
+  Unused <<
+    NS_WARN_IF(NS_FAILED(service->UnregisterRespondingListener(mWindowId)));
+}
+
+/* virtual */ JSObject*
+PresentationReceiver::WrapObject(JSContext* aCx,
+                                 JS::Handle<JSObject*> aGivenProto)
+{
+  return PresentationReceiverBinding::Wrap(aCx, this, aGivenProto);
+}
+
+NS_IMETHODIMP
+PresentationReceiver::NotifySessionConnect(uint64_t aWindowId,
+                                           const nsAString& aSessionId)
+{
+  PRES_DEBUG("receiver session connect:id[%s], windowId[%x]\n",
+             NS_ConvertUTF16toUTF8(aSessionId).get(), aWindowId);
+
+  if (NS_WARN_IF(!mOwner)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (NS_WARN_IF(aWindowId != mWindowId)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  if (NS_WARN_IF(!mConnectionList)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  RefPtr<PresentationConnection> connection =
+    PresentationConnection::Create(mOwner, aSessionId, mUrl,
+                                   nsIPresentationService::ROLE_RECEIVER,
+                                   mConnectionList);
+  if (NS_WARN_IF(!connection)) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  return NS_OK;
+}
+
+already_AddRefed<Promise>
+PresentationReceiver::GetConnectionList(ErrorResult& aRv)
+{
+  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(mOwner);
+  if (NS_WARN_IF(!global)) {
+    aRv.Throw(NS_ERROR_UNEXPECTED);
+    return nullptr;
+  }
+
+  if (!mGetConnectionListPromise) {
+    mGetConnectionListPromise = Promise::Create(global, aRv);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return nullptr;
+    }
+
+    RefPtr<PresentationReceiver> self = this;
+    nsresult rv =
+      NS_DispatchToMainThread(NS_NewRunnableFunction([self] () -> void {
+        self->CreateConnectionList();
+      }));
+    if (NS_FAILED(rv)) {
+      aRv.Throw(rv);
+      return nullptr;
+    }
+  }
+
+  RefPtr<Promise> promise = mGetConnectionListPromise;
+  return promise.forget();
+}
+
+void
+PresentationReceiver::CreateConnectionList()
+{
+  MOZ_ASSERT(mGetConnectionListPromise);
+
+  if (mConnectionList) {
+    return;
+  }
+
+  mConnectionList = new PresentationConnectionList(mOwner,
+                                                   mGetConnectionListPromise);
+
+  // Register listener for incoming sessions.
+  nsCOMPtr<nsIPresentationService> service =
+    do_GetService(PRESENTATION_SERVICE_CONTRACTID);
+  if (NS_WARN_IF(!service)) {
+    mGetConnectionListPromise->MaybeReject(NS_ERROR_DOM_OPERATION_ERR);
+    return;
+  }
+
+  nsresult rv = service->RegisterRespondingListener(mWindowId, this);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    mGetConnectionListPromise->MaybeReject(rv);
+  }
+}
+
+} // namespace dom
+} // namespace mozilla