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/* -*- 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
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