mirror of
https://github.com/mozilla/gecko-dev.git
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159 lines
4.1 KiB
C++
159 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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/TextTrackList.h"
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#include "mozilla/dom/TextTrackListBinding.h"
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#include "mozilla/dom/TrackEvent.h"
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#include "nsThreadUtils.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_CYCLE_COLLECTION_INHERITED_2(TextTrackList,
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nsDOMEventTargetHelper,
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mGlobal,
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mTextTracks)
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NS_IMPL_ADDREF_INHERITED(TextTrackList, nsDOMEventTargetHelper)
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NS_IMPL_RELEASE_INHERITED(TextTrackList, nsDOMEventTargetHelper)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TextTrackList)
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NS_INTERFACE_MAP_END_INHERITING(nsDOMEventTargetHelper)
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TextTrackList::TextTrackList(nsISupports* aGlobal) : mGlobal(aGlobal)
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{
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SetIsDOMBinding();
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}
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void
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TextTrackList::Update(double aTime)
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{
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uint32_t length = Length(), i;
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for (i = 0; i < length; i++) {
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mTextTracks[i]->Update(aTime);
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}
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}
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JSObject*
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TextTrackList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aScope)
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{
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return TextTrackListBinding::Wrap(aCx, aScope, this);
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}
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TextTrack*
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TextTrackList::IndexedGetter(uint32_t aIndex, bool& aFound)
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{
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aFound = aIndex < mTextTracks.Length();
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return aFound ? mTextTracks[aIndex] : nullptr;
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}
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already_AddRefed<TextTrack>
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TextTrackList::AddTextTrack(HTMLMediaElement* aMediaElement,
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TextTrackKind aKind,
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const nsAString& aLabel,
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const nsAString& aLanguage)
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{
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nsRefPtr<TextTrack> track = new TextTrack(mGlobal, aMediaElement, aKind,
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aLabel, aLanguage);
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if (mTextTracks.AppendElement(track)) {
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CreateAndDispatchTrackEventRunner(track, NS_LITERAL_STRING("addtrack"));
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}
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return track.forget();
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}
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TextTrack*
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TextTrackList::GetTrackById(const nsAString& aId)
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{
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nsAutoString id;
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for (uint32_t i = 0; i < Length(); i++) {
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mTextTracks[i]->GetId(id);
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if (aId.Equals(id)) {
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return mTextTracks[i];
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}
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}
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return nullptr;
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}
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void
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TextTrackList::RemoveTextTrack(TextTrack* aTrack)
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{
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if (mTextTracks.RemoveElement(aTrack)) {
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CreateAndDispatchTrackEventRunner(aTrack, NS_LITERAL_STRING("removetrack"));
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}
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}
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void
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TextTrackList::DidSeek()
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{
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for (uint32_t i = 0; i < mTextTracks.Length(); i++) {
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mTextTracks[i]->SetDirty();
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}
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}
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class TrackEventRunner MOZ_FINAL: public nsRunnable
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{
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public:
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TrackEventRunner(TextTrackList* aList, nsIDOMEvent* aEvent)
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: mList(aList)
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, mEvent(aEvent)
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{}
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NS_IMETHOD Run() MOZ_OVERRIDE
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{
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return mList->DispatchTrackEvent(mEvent);
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}
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private:
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nsRefPtr<TextTrackList> mList;
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nsRefPtr<nsIDOMEvent> mEvent;
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};
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nsresult
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TextTrackList::DispatchTrackEvent(nsIDOMEvent* aEvent)
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{
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return DispatchTrustedEvent(aEvent);
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}
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void
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TextTrackList::CreateAndDispatchChangeEvent()
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{
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nsCOMPtr<nsIDOMEvent> event;
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nsresult rv = NS_NewDOMEvent(getter_AddRefs(event), this, nullptr, nullptr);
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if (NS_FAILED(rv)) {
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NS_WARNING("Failed to create the error event!");
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return;
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}
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rv = event->InitEvent(NS_LITERAL_STRING("change"), false, false);
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if (NS_FAILED(rv)) {
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NS_WARNING("Failed to init the change event!");
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return;
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}
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event->SetTrusted(true);
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nsCOMPtr<nsIRunnable> eventRunner = new TrackEventRunner(this, event);
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NS_DispatchToMainThread(eventRunner, NS_DISPATCH_NORMAL);
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}
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void
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TextTrackList::CreateAndDispatchTrackEventRunner(TextTrack* aTrack,
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const nsAString& aEventName)
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{
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TrackEventInit eventInit;
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eventInit.mBubbles = false;
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eventInit.mCancelable = false;
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eventInit.mTrack = aTrack;
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nsRefPtr<TrackEvent> event =
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TrackEvent::Constructor(this, aEventName, eventInit);
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// Dispatch the TrackEvent asynchronously.
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nsCOMPtr<nsIRunnable> eventRunner = new TrackEventRunner(this, event);
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NS_DispatchToMainThread(eventRunner, NS_DISPATCH_NORMAL);
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}
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} // namespace dom
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} // namespace mozilla
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