gecko/content/media/TextTrack.cpp
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

88 lines
2.2 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/. */
#include "mozilla/dom/TextTrack.h"
#include "mozilla/dom/TextTrackBinding.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_3(TextTrack,
mParent,
mCueList,
mActiveCueList)
NS_IMPL_ADDREF_INHERITED(TextTrack, nsDOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(TextTrack, nsDOMEventTargetHelper)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TextTrack)
NS_INTERFACE_MAP_END_INHERITING(nsDOMEventTargetHelper)
TextTrack::TextTrack(nsISupports* aParent,
TextTrackKind aKind,
const nsAString& aLabel,
const nsAString& aLanguage)
: mParent(aParent)
, mKind(aKind)
, mLabel(aLabel)
, mLanguage(aLanguage)
, mMode(TextTrackMode::Hidden)
, mCueList(new TextTrackCueList(aParent))
, mActiveCueList(new TextTrackCueList(aParent))
{
SetIsDOMBinding();
}
TextTrack::TextTrack(nsISupports* aParent)
: mParent(aParent)
, mKind(TextTrackKind::Subtitles)
, mMode(TextTrackMode::Disabled)
, mCueList(new TextTrackCueList(aParent))
, mActiveCueList(new TextTrackCueList(aParent))
{
SetIsDOMBinding();
}
void
TextTrack::Update(double time)
{
mCueList->Update(time);
}
JSObject*
TextTrack::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aScope)
{
return TextTrackBinding::Wrap(aCx, aScope, this);
}
void
TextTrack::SetMode(TextTrackMode aValue)
{
mMode = aValue;
}
void
TextTrack::AddCue(TextTrackCue& aCue)
{
//XXX: If cue exists, remove. Bug 867823.
mCueList->AddCue(aCue);
}
void
TextTrack::RemoveCue(TextTrackCue& aCue)
{
//XXX: If cue does not exists throw NotFoundError. Bug 867823.
mCueList->RemoveCue(aCue);
}
void
TextTrack::CueChanged(TextTrackCue& aCue)
{
//XXX: Implement Cue changed. Bug 867823.
}
} // namespace dom
} // namespace mozilla