import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/media/TextTrackList.cpp

@@ -0,0 +1,236 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/TextTrackList.h"
+#include "mozilla/dom/TextTrackListBinding.h"
+#include "mozilla/dom/TrackEvent.h"
+#include "nsThreadUtils.h"
+#include "mozilla/dom/TextTrackCue.h"
+#include "mozilla/dom/TextTrackManager.h"
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(TextTrackList,
+                                   DOMEventTargetHelper,
+                                   mTextTracks,
+                                   mTextTrackManager)
+
+NS_IMPL_ADDREF_INHERITED(TextTrackList, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(TextTrackList, DOMEventTargetHelper)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TextTrackList)
+NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
+
+TextTrackList::TextTrackList(nsPIDOMWindowInner* aOwnerWindow)
+  : DOMEventTargetHelper(aOwnerWindow)
+{
+}
+
+TextTrackList::TextTrackList(nsPIDOMWindowInner* aOwnerWindow,
+                             TextTrackManager* aTextTrackManager)
+  : DOMEventTargetHelper(aOwnerWindow)
+  , mTextTrackManager(aTextTrackManager)
+{
+}
+
+TextTrackList::~TextTrackList()
+{
+}
+
+void
+TextTrackList::GetShowingCues(nsTArray<RefPtr<TextTrackCue> >& aCues)
+{
+  nsTArray< RefPtr<TextTrackCue> > cues;
+  for (uint32_t i = 0; i < Length(); i++) {
+    if (mTextTracks[i]->Mode() == TextTrackMode::Showing) {
+      mTextTracks[i]->GetActiveCueArray(cues);
+      aCues.AppendElements(cues);
+    }
+  }
+}
+
+JSObject*
+TextTrackList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return TextTrackListBinding::Wrap(aCx, this, aGivenProto);
+}
+
+TextTrack*
+TextTrackList::IndexedGetter(uint32_t aIndex, bool& aFound)
+{
+  aFound = aIndex < mTextTracks.Length();
+  if (!aFound) {
+    return nullptr;
+  }
+  return mTextTracks[aIndex];
+}
+
+TextTrack*
+TextTrackList::operator[](uint32_t aIndex)
+{
+  return mTextTracks.SafeElementAt(aIndex, nullptr);
+}
+
+already_AddRefed<TextTrack>
+TextTrackList::AddTextTrack(TextTrackKind aKind,
+                            const nsAString& aLabel,
+                            const nsAString& aLanguage,
+                            TextTrackMode aMode,
+                            TextTrackReadyState aReadyState,
+                            TextTrackSource aTextTrackSource,
+                            const CompareTextTracks& aCompareTT)
+{
+  RefPtr<TextTrack> track = new TextTrack(GetOwner(), this, aKind, aLabel,
+                                            aLanguage, aMode, aReadyState,
+                                            aTextTrackSource);
+  AddTextTrack(track, aCompareTT);
+  return track.forget();
+}
+
+void
+TextTrackList::AddTextTrack(TextTrack* aTextTrack,
+                            const CompareTextTracks& aCompareTT)
+{
+  if (mTextTracks.Contains(aTextTrack)) {
+    return;
+  }
+  if (mTextTracks.InsertElementSorted(aTextTrack, aCompareTT)) {
+    aTextTrack->SetTextTrackList(this);
+    CreateAndDispatchTrackEventRunner(aTextTrack, NS_LITERAL_STRING("addtrack"));
+  }
+}
+
+TextTrack*
+TextTrackList::GetTrackById(const nsAString& aId)
+{
+  nsAutoString id;
+  for (uint32_t i = 0; i < Length(); i++) {
+    mTextTracks[i]->GetId(id);
+    if (aId.Equals(id)) {
+      return mTextTracks[i];
+    }
+  }
+  return nullptr;
+}
+
+void
+TextTrackList::RemoveTextTrack(TextTrack* aTrack)
+{
+  if (mTextTracks.RemoveElement(aTrack)) {
+    CreateAndDispatchTrackEventRunner(aTrack, NS_LITERAL_STRING("removetrack"));
+  }
+}
+
+void
+TextTrackList::DidSeek()
+{
+  for (uint32_t i = 0; i < mTextTracks.Length(); i++) {
+    mTextTracks[i]->SetDirty();
+  }
+}
+
+class TrackEventRunner : public Runnable
+{
+public:
+  TrackEventRunner(TextTrackList* aList, nsIDOMEvent* aEvent)
+    : mList(aList)
+    , mEvent(aEvent)
+  {}
+
+  NS_IMETHOD Run() override
+  {
+    return mList->DispatchTrackEvent(mEvent);
+  }
+
+  RefPtr<TextTrackList> mList;
+private:
+  RefPtr<nsIDOMEvent> mEvent;
+};
+
+class ChangeEventRunner final : public TrackEventRunner
+{
+public:
+  ChangeEventRunner(TextTrackList* aList, nsIDOMEvent* aEvent)
+    : TrackEventRunner(aList, aEvent)
+  {}
+
+  NS_IMETHOD Run() override
+  {
+    mList->mPendingTextTrackChange = false;
+    return TrackEventRunner::Run();
+  }
+};
+
+nsresult
+TextTrackList::DispatchTrackEvent(nsIDOMEvent* aEvent)
+{
+  return DispatchTrustedEvent(aEvent);
+}
+
+void
+TextTrackList::CreateAndDispatchChangeEvent()
+{
+  MOZ_ASSERT(NS_IsMainThread());
+  if (!mPendingTextTrackChange) {
+    mPendingTextTrackChange = true;
+    RefPtr<Event> event = NS_NewDOMEvent(this, nullptr, nullptr);
+
+    event->InitEvent(NS_LITERAL_STRING("change"), false, false);
+    event->SetTrusted(true);
+
+    nsCOMPtr<nsIRunnable> eventRunner = new ChangeEventRunner(this, event);
+    NS_DispatchToMainThread(eventRunner);
+  }
+}
+
+void
+TextTrackList::CreateAndDispatchTrackEventRunner(TextTrack* aTrack,
+                                                 const nsAString& aEventName)
+{
+  nsCOMPtr<nsIThread> thread;
+  nsresult rv = NS_GetMainThread(getter_AddRefs(thread));
+  if (NS_FAILED(rv)) {
+    // If we are not able to get the main-thread object we are shutting down.
+    return;
+  }
+
+  TrackEventInit eventInit;
+  eventInit.mTrack.SetValue().SetAsTextTrack() = aTrack;
+  RefPtr<TrackEvent> event =
+    TrackEvent::Constructor(this, aEventName, eventInit);
+
+  // Dispatch the TrackEvent asynchronously.
+  rv = thread->Dispatch(do_AddRef(new TrackEventRunner(this, event)),
+                        NS_DISPATCH_NORMAL);
+
+  // If we are shutting down this can file but it's still ok.
+  NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Dispatch failed");
+}
+
+HTMLMediaElement*
+TextTrackList::GetMediaElement()
+{
+  if (mTextTrackManager) {
+    return mTextTrackManager->mMediaElement;
+  }
+  return nullptr;
+}
+
+void
+TextTrackList::SetTextTrackManager(TextTrackManager* aTextTrackManager)
+{
+  mTextTrackManager = aTextTrackManager;
+}
+
+void
+TextTrackList::SetCuesInactive()
+{
+  for (uint32_t i = 0; i < Length(); i++) {
+    mTextTracks[i]->SetCuesInactive();
+  }
+}
+
+} // namespace dom
+} // namespace mozilla