gecko/dom/presentation/Presentation.cpp

107 lines
2.8 KiB
C++

/* -*- 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 "mozilla/dom/PresentationBinding.h"
#include "mozilla/dom/Promise.h"
#include "nsCycleCollectionParticipant.h"
#include "nsIPresentationDeviceManager.h"
#include "nsServiceManagerUtils.h"
#include "Presentation.h"
#include "PresentationSession.h"
using namespace mozilla;
using namespace mozilla::dom;
NS_IMPL_CYCLE_COLLECTION_CLASS(Presentation)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(Presentation, DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSession)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(Presentation, DOMEventTargetHelper)
tmp->Shutdown();
NS_IMPL_CYCLE_COLLECTION_UNLINK(mSession)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_ADDREF_INHERITED(Presentation, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(Presentation, DOMEventTargetHelper)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(Presentation)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
/* static */ already_AddRefed<Presentation>
Presentation::Create(nsPIDOMWindow* aWindow)
{
nsRefPtr<Presentation> presentation = new Presentation(aWindow);
return NS_WARN_IF(!presentation->Init()) ? nullptr : presentation.forget();
}
Presentation::Presentation(nsPIDOMWindow* aWindow)
: DOMEventTargetHelper(aWindow)
, mAvailable(false)
{
}
Presentation::~Presentation()
{
Shutdown();
}
bool
Presentation::Init()
{
// TODO: Register listener for |mAvailable| changes.
return true;
}
void Presentation::Shutdown()
{
mSession = nullptr;
// TODO: Unregister listener for |mAvailable| changes.
}
/* virtual */ JSObject*
Presentation::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return PresentationBinding::Wrap(aCx, this, aGivenProto);
}
already_AddRefed<Promise>
Presentation::StartSession(const nsAString& aUrl,
const Optional<nsAString>& aId,
ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetOwner());
if (NS_WARN_IF(!global)) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
nsRefPtr<Promise> promise = Promise::Create(global, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
// TODO: Resolve/reject the promise.
return promise.forget();
}
already_AddRefed<PresentationSession>
Presentation::GetSession() const
{
nsRefPtr<PresentationSession> session = mSession;
return session.forget();
}
bool
Presentation::CachedAvailable() const
{
return mAvailable;
}