michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "mozilla/dom/TextTrackList.h"
michael@0: #include "mozilla/dom/TextTrackListBinding.h"
michael@0: #include "mozilla/dom/TrackEvent.h"
michael@0: #include "nsThreadUtils.h"
michael@0: #include "mozilla/dom/TextTrackCue.h"
michael@0: #include "mozilla/dom/TextTrackManager.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_INHERITED(TextTrackList,
michael@0:                                    DOMEventTargetHelper,
michael@0:                                    mTextTracks,
michael@0:                                    mTextTrackManager)
michael@0: 
michael@0: NS_IMPL_ADDREF_INHERITED(TextTrackList, DOMEventTargetHelper)
michael@0: NS_IMPL_RELEASE_INHERITED(TextTrackList, DOMEventTargetHelper)
michael@0: NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TextTrackList)
michael@0: NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
michael@0: 
michael@0: TextTrackList::TextTrackList(nsPIDOMWindow* aOwnerWindow)
michael@0:   : DOMEventTargetHelper(aOwnerWindow)
michael@0: {
michael@0: }
michael@0: 
michael@0: TextTrackList::TextTrackList(nsPIDOMWindow* aOwnerWindow,
michael@0:                              TextTrackManager* aTextTrackManager)
michael@0:  : DOMEventTargetHelper(aOwnerWindow)
michael@0:  , mTextTrackManager(aTextTrackManager)
michael@0: {
michael@0: }
michael@0: 
michael@0: void
michael@0: TextTrackList::UpdateAndGetShowingCues(nsTArray<nsRefPtr<TextTrackCue> >& aCues)
michael@0: {
michael@0:   nsTArray< nsRefPtr<TextTrackCue> > cues;
michael@0:   for (uint32_t i = 0; i < Length(); i++) {
michael@0:     TextTrackMode mode = mTextTracks[i]->Mode();
michael@0:     // If the mode is hidden then we just need to update the active cue list,
michael@0:     // we don't need to show it on the video.
michael@0:     if (mode == TextTrackMode::Hidden) {
michael@0:       mTextTracks[i]->UpdateActiveCueList();
michael@0:     } else if (mode == TextTrackMode::Showing) {
michael@0:       // If the mode is showing then we need to update the cue list and show it
michael@0:       // on the video. GetActiveCueArray() calls UpdateActiveCueList() so we
michael@0:       // don't need to call it explicitly.
michael@0:       mTextTracks[i]->GetActiveCueArray(cues);
michael@0:       aCues.AppendElements(cues);
michael@0:     }
michael@0:   }
michael@0: }
michael@0: 
michael@0: JSObject*
michael@0: TextTrackList::WrapObject(JSContext* aCx)
michael@0: {
michael@0:   return TextTrackListBinding::Wrap(aCx, this);
michael@0: }
michael@0: 
michael@0: TextTrack*
michael@0: TextTrackList::IndexedGetter(uint32_t aIndex, bool& aFound)
michael@0: {
michael@0:   aFound = aIndex < mTextTracks.Length();
michael@0:   return aFound ? mTextTracks[aIndex] : nullptr;
michael@0: }
michael@0: 
michael@0: TextTrack*
michael@0: TextTrackList::operator[](uint32_t aIndex)
michael@0: {
michael@0:   return mTextTracks.SafeElementAt(aIndex, nullptr);
michael@0: }
michael@0: 
michael@0: already_AddRefed<TextTrack>
michael@0: TextTrackList::AddTextTrack(TextTrackKind aKind,
michael@0:                             const nsAString& aLabel,
michael@0:                             const nsAString& aLanguage,
michael@0:                             TextTrackMode aMode,
michael@0:                             TextTrackReadyState aReadyState,
michael@0:                             TextTrackSource aTextTrackSource,
michael@0:                             const CompareTextTracks& aCompareTT)
michael@0: {
michael@0:   nsRefPtr<TextTrack> track = new TextTrack(GetOwner(), this, aKind, aLabel,
michael@0:                                             aLanguage, aMode, aReadyState,
michael@0:                                             aTextTrackSource);
michael@0:   AddTextTrack(track, aCompareTT);
michael@0:   return track.forget();
michael@0: }
michael@0: 
michael@0: void
michael@0: TextTrackList::AddTextTrack(TextTrack* aTextTrack,
michael@0:                             const CompareTextTracks& aCompareTT)
michael@0: {
michael@0:   if (mTextTracks.InsertElementSorted(aTextTrack, aCompareTT)) {
michael@0:     aTextTrack->SetTextTrackList(this);
michael@0:     CreateAndDispatchTrackEventRunner(aTextTrack, NS_LITERAL_STRING("addtrack"));
michael@0:   }
michael@0: }
michael@0: 
michael@0: TextTrack*
michael@0: TextTrackList::GetTrackById(const nsAString& aId)
michael@0: {
michael@0:   nsAutoString id;
michael@0:   for (uint32_t i = 0; i < Length(); i++) {
michael@0:     mTextTracks[i]->GetId(id);
michael@0:     if (aId.Equals(id)) {
michael@0:       return mTextTracks[i];
michael@0:     }
michael@0:   }
michael@0:   return nullptr;
michael@0: }
michael@0: 
michael@0: void
michael@0: TextTrackList::RemoveTextTrack(TextTrack* aTrack)
michael@0: {
michael@0:   if (mTextTracks.RemoveElement(aTrack)) {
michael@0:     CreateAndDispatchTrackEventRunner(aTrack, NS_LITERAL_STRING("removetrack"));
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: TextTrackList::DidSeek()
michael@0: {
michael@0:   for (uint32_t i = 0; i < mTextTracks.Length(); i++) {
michael@0:     mTextTracks[i]->SetDirty();
michael@0:   }
michael@0: }
michael@0: 
michael@0: class TrackEventRunner MOZ_FINAL: public nsRunnable
michael@0: {
michael@0: public:
michael@0:   TrackEventRunner(TextTrackList* aList, nsIDOMEvent* aEvent)
michael@0:     : mList(aList)
michael@0:     , mEvent(aEvent)
michael@0:   {}
michael@0: 
michael@0:   NS_IMETHOD Run() MOZ_OVERRIDE
michael@0:   {
michael@0:     return mList->DispatchTrackEvent(mEvent);
michael@0:   }
michael@0: 
michael@0: private:
michael@0:   nsRefPtr<TextTrackList> mList;
michael@0:   nsRefPtr<nsIDOMEvent> mEvent;
michael@0: };
michael@0: 
michael@0: nsresult
michael@0: TextTrackList::DispatchTrackEvent(nsIDOMEvent* aEvent)
michael@0: {
michael@0:   return DispatchTrustedEvent(aEvent);
michael@0: }
michael@0: 
michael@0: void
michael@0: TextTrackList::CreateAndDispatchChangeEvent()
michael@0: {
michael@0:   nsCOMPtr<nsIDOMEvent> event;
michael@0:   nsresult rv = NS_NewDOMEvent(getter_AddRefs(event), this, nullptr, nullptr);
michael@0:   if (NS_FAILED(rv)) {
michael@0:     NS_WARNING("Failed to create the error event!");
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   rv = event->InitEvent(NS_LITERAL_STRING("change"), false, false);
michael@0:   if (NS_FAILED(rv)) {
michael@0:     NS_WARNING("Failed to init the change event!");
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   event->SetTrusted(true);
michael@0: 
michael@0:   nsCOMPtr<nsIRunnable> eventRunner = new TrackEventRunner(this, event);
michael@0:   NS_DispatchToMainThread(eventRunner, NS_DISPATCH_NORMAL);
michael@0: }
michael@0: 
michael@0: void
michael@0: TextTrackList::CreateAndDispatchTrackEventRunner(TextTrack* aTrack,
michael@0:                                                  const nsAString& aEventName)
michael@0: {
michael@0:   TrackEventInit eventInit;
michael@0:   eventInit.mBubbles = false;
michael@0:   eventInit.mCancelable = false;
michael@0:   eventInit.mTrack = aTrack;
michael@0:   nsRefPtr<TrackEvent> event =
michael@0:     TrackEvent::Constructor(this, aEventName, eventInit);
michael@0: 
michael@0:   // Dispatch the TrackEvent asynchronously.
michael@0:   nsCOMPtr<nsIRunnable> eventRunner = new TrackEventRunner(this, event);
michael@0:   NS_DispatchToMainThread(eventRunner, NS_DISPATCH_NORMAL);
michael@0: }
michael@0: 
michael@0: HTMLMediaElement*
michael@0: TextTrackList::GetMediaElement()
michael@0: {
michael@0:   if (mTextTrackManager) {
michael@0:     return mTextTrackManager->mMediaElement;
michael@0:   }
michael@0:   return nullptr;
michael@0: }
michael@0: 
michael@0: void
michael@0: TextTrackList::SetTextTrackManager(TextTrackManager* aTextTrackManager)
michael@0: {
michael@0:   mTextTrackManager = aTextTrackManager;
michael@0: }
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla