gecko/content/media/TextTrackList.h
Ralph Giles 3d52d52549 Bug 833385 - Implement HTMLTrackElement and TextTrack. r=bz,Ms2ger
Add webidl interfaces and implementations of the HTML <track>
element and related TextTrack, TextTrackList, TextTrackCue,
and TextTrackCueList dom objects.

Visibility is controlled by the media.webvtt.enabled pref,
which defaults to false.

HTMLMediaElement:NewURIFromString() is hoisted to
nsGenericHTMLElement so it's available to the track
element as well.

This patch is primarily work by Dale Karp, David Humphrey
and others as Seneca College.
2013-05-22 00:14:00 +08:00

70 lines
1.9 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 et tw=78: */
/* 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/. */
#ifndef mozilla_dom_TextTrackList_h
#define mozilla_dom_TextTrackList_h
#include "mozilla/dom/TextTrack.h"
#include "nsCycleCollectionParticipant.h"
#include "nsDOMEventTargetHelper.h"
namespace mozilla {
namespace dom {
class TextTrack;
class TextTrackList MOZ_FINAL : public nsDOMEventTargetHelper
{
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(TextTrackList,
nsDOMEventTargetHelper)
TextTrackList(nsISupports* aGlobal);
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aScope) MOZ_OVERRIDE;
nsISupports* GetParentObject() const
{
return mGlobal;
}
uint32_t Length() const
{
return mTextTracks.Length();
}
void Update(double time) {
uint32_t length = Length(), i;
for( i = 0; i < length; i++ ) {
mTextTracks[i]->Update(time);
}
}
TextTrack* IndexedGetter(uint32_t aIndex, bool& aFound);
already_AddRefed<TextTrack> AddTextTrack(TextTrackKind aKind,
const nsAString& aLabel,
const nsAString& aLanguage);
void AddTextTrack(TextTrack* aTextTrack) {
mTextTracks.AppendElement(aTextTrack);
}
void RemoveTextTrack(const TextTrack& aTrack);
IMPL_EVENT_HANDLER(addtrack)
IMPL_EVENT_HANDLER(removetrack)
private:
nsCOMPtr<nsISupports> mGlobal;
nsTArray< nsRefPtr<TextTrack> > mTextTracks;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_TextTrackList_h