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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/presentation/PresentationAvailability.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/presentation/PresentationAvailability.cpp')
-rw-r--r--dom/presentation/PresentationAvailability.cpp206
1 files changed, 206 insertions, 0 deletions
diff --git a/dom/presentation/PresentationAvailability.cpp b/dom/presentation/PresentationAvailability.cpp
new file mode 100644
index 000000000..93f27dfbf
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+++ b/dom/presentation/PresentationAvailability.cpp
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+/* -*- 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 "PresentationAvailability.h"
+
+#include "mozilla/dom/PresentationAvailabilityBinding.h"
+#include "mozilla/dom/Promise.h"
+#include "mozilla/Unused.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsIPresentationDeviceManager.h"
+#include "nsIPresentationService.h"
+#include "nsServiceManagerUtils.h"
+#include "PresentationLog.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(PresentationAvailability)
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(PresentationAvailability, DOMEventTargetHelper)
+ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPromises)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(PresentationAvailability, DOMEventTargetHelper)
+ NS_IMPL_CYCLE_COLLECTION_UNLINK(mPromises);
+ tmp->Shutdown();
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_ADDREF_INHERITED(PresentationAvailability, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(PresentationAvailability, DOMEventTargetHelper)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(PresentationAvailability)
+ NS_INTERFACE_MAP_ENTRY(nsIPresentationAvailabilityListener)
+NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
+
+/* static */ already_AddRefed<PresentationAvailability>
+PresentationAvailability::Create(nsPIDOMWindowInner* aWindow,
+ const nsTArray<nsString>& aUrls,
+ RefPtr<Promise>& aPromise)
+{
+ RefPtr<PresentationAvailability> availability =
+ new PresentationAvailability(aWindow, aUrls);
+ return NS_WARN_IF(!availability->Init(aPromise)) ? nullptr
+ : availability.forget();
+}
+
+PresentationAvailability::PresentationAvailability(nsPIDOMWindowInner* aWindow,
+ const nsTArray<nsString>& aUrls)
+ : DOMEventTargetHelper(aWindow)
+ , mIsAvailable(false)
+ , mUrls(aUrls)
+{
+ for (uint32_t i = 0; i < mUrls.Length(); ++i) {
+ mAvailabilityOfUrl.AppendElement(false);
+ }
+}
+
+PresentationAvailability::~PresentationAvailability()
+{
+ Shutdown();
+}
+
+bool
+PresentationAvailability::Init(RefPtr<Promise>& aPromise)
+{
+ nsCOMPtr<nsIPresentationService> service =
+ do_GetService(PRESENTATION_SERVICE_CONTRACTID);
+ if (NS_WARN_IF(!service)) {
+ return false;
+ }
+
+ nsresult rv = service->RegisterAvailabilityListener(mUrls, this);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ // If the user agent is unable to monitor available device,
+ // Resolve promise with |value| set to false.
+ mIsAvailable = false;
+ aPromise->MaybeResolve(this);
+ return true;
+ }
+
+ EnqueuePromise(aPromise);
+
+ AvailabilityCollection* collection = AvailabilityCollection::GetSingleton();
+ if (collection) {
+ collection->Add(this);
+ }
+
+ return true;
+}
+
+void PresentationAvailability::Shutdown()
+{
+ AvailabilityCollection* collection = AvailabilityCollection::GetSingleton();
+ if (collection ) {
+ collection->Remove(this);
+ }
+
+ nsCOMPtr<nsIPresentationService> service =
+ do_GetService(PRESENTATION_SERVICE_CONTRACTID);
+ if (NS_WARN_IF(!service)) {
+ return;
+ }
+
+ Unused <<
+ NS_WARN_IF(NS_FAILED(service->UnregisterAvailabilityListener(mUrls,
+ this)));
+}
+
+/* virtual */ void
+PresentationAvailability::DisconnectFromOwner()
+{
+ Shutdown();
+ DOMEventTargetHelper::DisconnectFromOwner();
+}
+
+/* virtual */ JSObject*
+PresentationAvailability::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto)
+{
+ return PresentationAvailabilityBinding::Wrap(aCx, this, aGivenProto);
+}
+
+bool
+PresentationAvailability::Equals(const uint64_t aWindowID,
+ const nsTArray<nsString>& aUrls) const
+{
+ if (GetOwner() && GetOwner()->WindowID() == aWindowID &&
+ mUrls.Length() == aUrls.Length()) {
+ for (const auto& url : aUrls) {
+ if (!mUrls.Contains(url)) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ return false;
+}
+
+bool
+PresentationAvailability::IsCachedValueReady()
+{
+ // All pending promises will be solved when cached value is ready and
+ // no promise should be enqueued afterward.
+ return mPromises.IsEmpty();
+}
+
+void
+PresentationAvailability::EnqueuePromise(RefPtr<Promise>& aPromise)
+{
+ mPromises.AppendElement(aPromise);
+}
+
+bool
+PresentationAvailability::Value() const
+{
+ return mIsAvailable;
+}
+
+NS_IMETHODIMP
+PresentationAvailability::NotifyAvailableChange(const nsTArray<nsString>& aAvailabilityUrls,
+ bool aIsAvailable)
+{
+ bool available = false;
+ for (uint32_t i = 0; i < mUrls.Length(); ++i) {
+ if (aAvailabilityUrls.Contains(mUrls[i])) {
+ mAvailabilityOfUrl[i] = aIsAvailable;
+ }
+ available |= mAvailabilityOfUrl[i];
+ }
+
+ return NS_DispatchToCurrentThread(NewRunnableMethod
+ <bool>(this,
+ &PresentationAvailability::UpdateAvailabilityAndDispatchEvent,
+ available));
+}
+
+void
+PresentationAvailability::UpdateAvailabilityAndDispatchEvent(bool aIsAvailable)
+{
+ PRES_DEBUG("%s\n", __func__);
+ bool isChanged = (aIsAvailable != mIsAvailable);
+
+ mIsAvailable = aIsAvailable;
+
+ if (!mPromises.IsEmpty()) {
+ // Use the first availability change notification to resolve promise.
+ do {
+ nsTArray<RefPtr<Promise>> promises = Move(mPromises);
+ for (auto& promise : promises) {
+ promise->MaybeResolve(this);
+ }
+ // more promises may have been added to mPromises, at least in theory
+ } while (!mPromises.IsEmpty());
+
+ return;
+ }
+
+ if (isChanged) {
+ Unused <<
+ NS_WARN_IF(NS_FAILED(DispatchTrustedEvent(NS_LITERAL_STRING("change"))));
+ }
+}