124 lines
3.2 KiB
C++
124 lines
3.2 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/Promise.h"
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#include "mozilla/dom/TVManagerBinding.h"
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#include "mozilla/dom/TVServiceCallbacks.h"
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#include "mozilla/dom/TVServiceFactory.h"
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#include "mozilla/dom/TVTuner.h"
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#include "nsITVService.h"
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#include "nsServiceManagerUtils.h"
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#include "TVManager.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_CYCLE_COLLECTION_INHERITED(TVManager, DOMEventTargetHelper, mTVService,
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mTuners, mPendingGetTunersPromises)
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NS_IMPL_ADDREF_INHERITED(TVManager, DOMEventTargetHelper)
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NS_IMPL_RELEASE_INHERITED(TVManager, DOMEventTargetHelper)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TVManager)
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NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
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TVManager::TVManager(nsPIDOMWindow* aWindow)
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: DOMEventTargetHelper(aWindow)
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, mIsReady(false)
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{
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}
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TVManager::~TVManager()
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{
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}
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/* static */ already_AddRefed<TVManager>
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TVManager::Create(nsPIDOMWindow* aWindow)
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{
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RefPtr<TVManager> manager = new TVManager(aWindow);
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return (manager->Init()) ? manager.forget() : nullptr;
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}
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bool
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TVManager::Init()
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{
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mTVService = TVServiceFactory::AutoCreateTVService();
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NS_ENSURE_TRUE(mTVService, false);
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nsCOMPtr<nsITVServiceCallback> callback = new TVServiceTunerGetterCallback(this);
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nsresult rv = mTVService->GetTuners(callback);
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NS_ENSURE_SUCCESS(rv, false);
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return true;
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}
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/* virtual */ JSObject*
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TVManager::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return TVManagerBinding::Wrap(aCx, this, aGivenProto);
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}
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nsresult
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TVManager::SetTuners(const nsTArray<RefPtr<TVTuner>>& aTuners)
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{
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// Should be called only when TV Manager hasn't been ready yet.
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if (mIsReady) {
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return NS_ERROR_DOM_INVALID_STATE_ERR;
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}
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mTuners = aTuners;
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mIsReady = true;
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// Resolve pending promises.
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uint32_t length = mPendingGetTunersPromises.Length();
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for(uint32_t i = 0; i < length; i++) {
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mPendingGetTunersPromises[i]->MaybeResolve(mTuners);
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}
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mPendingGetTunersPromises.Clear();
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return NS_OK;
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}
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void
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TVManager::RejectPendingGetTunersPromises(nsresult aRv)
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{
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// Reject pending promises.
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uint32_t length = mPendingGetTunersPromises.Length();
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for(uint32_t i = 0; i < length; i++) {
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mPendingGetTunersPromises[i]->MaybeReject(aRv);
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}
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mPendingGetTunersPromises.Clear();
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}
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nsresult
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TVManager::DispatchTVEvent(nsIDOMEvent* aEvent)
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{
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return DispatchTrustedEvent(aEvent);
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}
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already_AddRefed<Promise>
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TVManager::GetTuners(ErrorResult& aRv)
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{
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nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetOwner());
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MOZ_ASSERT(global);
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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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// Keep track of the promise when the manager hasn't been ready yet.
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if (mIsReady) {
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promise->MaybeResolve(mTuners);
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} else {
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mPendingGetTunersPromises.AppendElement(promise);
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}
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return promise.forget();
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}
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} // namespace dom
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} // namespace mozilla
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