mirror of
https://github.com/classilla/tenfourfox.git
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252 lines
6.3 KiB
C++
252 lines
6.3 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 et tw=78: */
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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/TextTrack.h"
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#include "mozilla/dom/TextTrackBinding.h"
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#include "mozilla/dom/TextTrackList.h"
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#include "mozilla/dom/TextTrackCue.h"
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#include "mozilla/dom/TextTrackCueList.h"
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#include "mozilla/dom/TextTrackRegion.h"
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#include "mozilla/dom/HTMLMediaElement.h"
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#include "mozilla/dom/HTMLTrackElement.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_CYCLE_COLLECTION_INHERITED(TextTrack,
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DOMEventTargetHelper,
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mCueList,
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mActiveCueList,
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mTextTrackList,
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mTrackElement)
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NS_IMPL_ADDREF_INHERITED(TextTrack, DOMEventTargetHelper)
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NS_IMPL_RELEASE_INHERITED(TextTrack, DOMEventTargetHelper)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TextTrack)
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NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
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TextTrack::TextTrack(nsPIDOMWindow* aOwnerWindow,
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TextTrackKind aKind,
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const nsAString& aLabel,
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const nsAString& aLanguage,
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TextTrackMode aMode,
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TextTrackReadyState aReadyState,
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TextTrackSource aTextTrackSource)
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: DOMEventTargetHelper(aOwnerWindow)
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, mKind(aKind)
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, mLabel(aLabel)
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, mLanguage(aLanguage)
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, mMode(aMode)
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, mReadyState(aReadyState)
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, mTextTrackSource(aTextTrackSource)
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{
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SetDefaultSettings();
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}
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TextTrack::TextTrack(nsPIDOMWindow* aOwnerWindow,
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TextTrackList* aTextTrackList,
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TextTrackKind aKind,
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const nsAString& aLabel,
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const nsAString& aLanguage,
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TextTrackMode aMode,
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TextTrackReadyState aReadyState,
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TextTrackSource aTextTrackSource)
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: DOMEventTargetHelper(aOwnerWindow)
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, mTextTrackList(aTextTrackList)
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, mKind(aKind)
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, mLabel(aLabel)
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, mLanguage(aLanguage)
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, mMode(aMode)
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, mReadyState(aReadyState)
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, mTextTrackSource(aTextTrackSource)
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{
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SetDefaultSettings();
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}
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TextTrack::~TextTrack()
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{
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}
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void
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TextTrack::SetDefaultSettings()
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{
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nsPIDOMWindow* ownerWindow = GetOwner();
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mCueList = new TextTrackCueList(ownerWindow);
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mActiveCueList = new TextTrackCueList(ownerWindow);
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mCuePos = 0;
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mDirty = false;
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}
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JSObject*
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TextTrack::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return TextTrackBinding::Wrap(aCx, this, aGivenProto);
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}
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void
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TextTrack::SetMode(TextTrackMode aValue)
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{
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if (mMode != aValue) {
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mMode = aValue;
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if (mTextTrackList) {
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mTextTrackList->CreateAndDispatchChangeEvent();
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}
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}
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}
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void
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TextTrack::GetId(nsAString& aId) const
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{
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// If the track has a track element then its id should be the same as the
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// track element's id.
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if (mTrackElement) {
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mTrackElement->GetAttribute(NS_LITERAL_STRING("id"), aId);
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}
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}
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void
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TextTrack::AddCue(TextTrackCue& aCue)
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{
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mCueList->AddCue(aCue);
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aCue.SetTrack(this);
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if (mTextTrackList) {
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HTMLMediaElement* mediaElement = mTextTrackList->GetMediaElement();
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if (mediaElement) {
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mediaElement->AddCue(aCue);
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}
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}
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SetDirty();
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}
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void
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TextTrack::RemoveCue(TextTrackCue& aCue, ErrorResult& aRv)
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{
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mCueList->RemoveCue(aCue, aRv);
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SetDirty();
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}
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void
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TextTrack::SetCuesDirty()
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{
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for (uint32_t i = 0; i < mCueList->Length(); i++) {
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((*mCueList)[i])->Reset();
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}
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}
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void
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TextTrack::UpdateActiveCueList()
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{
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if (!mTextTrackList) {
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return;
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}
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HTMLMediaElement* mediaElement = mTextTrackList->GetMediaElement();
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if (!mediaElement) {
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return;
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}
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// If we are dirty, i.e. an event happened that may cause the sorted mCueList
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// to have changed like a seek or an insert for a cue, than we need to rebuild
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// the active cue list from scratch.
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if (mDirty) {
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mCuePos = 0;
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mDirty = false;
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mActiveCueList->RemoveAll();
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}
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double playbackTime = mediaElement->CurrentTime();
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// Remove all the cues from the active cue list whose end times now occur
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// earlier then the current playback time.
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for (uint32_t i = mActiveCueList->Length(); i > 0; i--) {
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if ((*mActiveCueList)[i - 1]->EndTime() < playbackTime) {
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mActiveCueList->RemoveCueAt(i - 1);
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}
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}
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// Add all the cues, starting from the position of the last cue that was
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// added, that have valid start and end times for the current playback time.
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// We can stop iterating safely once we encounter a cue that does not have
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// a valid start time as the cue list is sorted.
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for (; mCuePos < mCueList->Length() &&
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(*mCueList)[mCuePos]->StartTime() <= playbackTime; mCuePos++) {
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if ((*mCueList)[mCuePos]->EndTime() >= playbackTime) {
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mActiveCueList->AddCue(*(*mCueList)[mCuePos]);
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}
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}
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}
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TextTrackCueList*
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TextTrack::GetActiveCues() {
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if (mMode != TextTrackMode::Disabled) {
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UpdateActiveCueList();
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return mActiveCueList;
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}
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return nullptr;
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}
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void
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TextTrack::GetActiveCueArray(nsTArray<RefPtr<TextTrackCue> >& aCues)
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{
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if (mMode != TextTrackMode::Disabled) {
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UpdateActiveCueList();
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mActiveCueList->GetArray(aCues);
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}
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}
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TextTrackReadyState
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TextTrack::ReadyState() const
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{
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return mReadyState;
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}
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void
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TextTrack::SetReadyState(uint32_t aReadyState)
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{
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if (aReadyState <= TextTrackReadyState::FailedToLoad) {
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SetReadyState(static_cast<TextTrackReadyState>(aReadyState));
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}
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}
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void
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TextTrack::SetReadyState(TextTrackReadyState aState)
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{
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mReadyState = aState;
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if (!mTextTrackList) {
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return;
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}
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HTMLMediaElement* mediaElement = mTextTrackList->GetMediaElement();
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if (mediaElement && (mReadyState == TextTrackReadyState::Loaded||
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mReadyState == TextTrackReadyState::FailedToLoad)) {
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mediaElement->RemoveTextTrack(this, true);
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}
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}
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TextTrackList*
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TextTrack::GetTextTrackList()
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{
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return mTextTrackList;
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}
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void
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TextTrack::SetTextTrackList(TextTrackList* aTextTrackList)
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{
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mTextTrackList = aTextTrackList;
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}
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HTMLTrackElement*
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TextTrack::GetTrackElement() {
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return mTrackElement;
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}
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void
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TextTrack::SetTrackElement(HTMLTrackElement* aTrackElement) {
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mTrackElement = aTrackElement;
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}
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} // namespace dom
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} // namespace mozilla
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