gecko-dev/dom/media/TextTrackCueList.cpp

174 строки
3.7 KiB
C++

/* -*- 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/TextTrackCueList.h"
#include "mozilla/dom/TextTrackCueListBinding.h"
#include "mozilla/dom/TextTrackCue.h"
namespace mozilla {
namespace dom {
class CompareCuesByTime
{
public:
bool Equals(TextTrackCue* aOne, TextTrackCue* aTwo) const {
return false;
}
bool LessThan(TextTrackCue* aOne, TextTrackCue* aTwo) const {
return aOne->StartTime() < aTwo->StartTime() ||
(aOne->StartTime() == aTwo->StartTime() &&
aOne->EndTime() >= aTwo->EndTime());
}
};
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(TextTrackCueList, mParent, mList)
NS_IMPL_CYCLE_COLLECTING_ADDREF(TextTrackCueList)
NS_IMPL_CYCLE_COLLECTING_RELEASE(TextTrackCueList)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TextTrackCueList)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
TextTrackCueList::TextTrackCueList(nsISupports* aParent) : mParent(aParent)
{
}
TextTrackCueList::~TextTrackCueList()
{}
JSObject*
TextTrackCueList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return TextTrackCueListBinding::Wrap(aCx, this, aGivenProto);
}
TextTrackCue*
TextTrackCueList::IndexedGetter(uint32_t aIndex, bool& aFound)
{
aFound = aIndex < mList.Length();
if (!aFound) {
return nullptr;
}
return mList[aIndex];
}
TextTrackCue*
TextTrackCueList::operator[](uint32_t aIndex)
{
return mList.SafeElementAt(aIndex, nullptr);
}
TextTrackCueList&
TextTrackCueList::operator=(const TextTrackCueList& aOther)
{
mList = aOther.mList;
return *this;
}
TextTrackCue*
TextTrackCueList::GetCueById(const nsAString& aId)
{
if (aId.IsEmpty()) {
return nullptr;
}
for (uint32_t i = 0; i < mList.Length(); i++) {
if (aId.Equals(mList[i]->Id())) {
return mList[i];
}
}
return nullptr;
}
void
TextTrackCueList::AddCue(TextTrackCue& aCue)
{
if (mList.Contains(&aCue)) {
return;
}
mList.InsertElementSorted(&aCue, CompareCuesByTime());
}
void
TextTrackCueList::RemoveCue(TextTrackCue& aCue, ErrorResult& aRv)
{
if (!mList.Contains(&aCue)) {
aRv.Throw(NS_ERROR_DOM_NOT_FOUND_ERR);
return;
}
mList.RemoveElement(&aCue);
}
void
TextTrackCueList::RemoveCue(TextTrackCue& aCue)
{
mList.RemoveElement(&aCue);
}
void
TextTrackCueList::RemoveCueAt(uint32_t aIndex)
{
if (aIndex < mList.Length()) {
mList.RemoveElementAt(aIndex);
}
}
void
TextTrackCueList::RemoveAll()
{
mList.Clear();
}
void
TextTrackCueList::GetArray(nsTArray<RefPtr<TextTrackCue> >& aCues)
{
aCues = nsTArray<RefPtr<TextTrackCue> >(mList);
}
void
TextTrackCueList::SetCuesInactive()
{
for(uint32_t i = 0; i < mList.Length(); ++i) {
mList[i]->SetActive(false);
}
}
already_AddRefed<TextTrackCueList>
TextTrackCueList::GetCueListByTimeInterval(media::Interval<double>& aInterval)
{
RefPtr<TextTrackCueList> output = new TextTrackCueList(mParent);
for (uint32_t i = 0; i < mList.Length(); ++i) {
TextTrackCue* cue = mList[i];
if (cue->StartTime() <= aInterval.mEnd &&
aInterval.mStart <= cue->EndTime()) {
output->AddCue(*cue);
}
}
return output.forget();
}
void
TextTrackCueList::NotifyCueUpdated(TextTrackCue *aCue)
{
if (aCue) {
mList.RemoveElement(aCue);
mList.InsertElementSorted(aCue, CompareCuesByTime());
}
}
bool
TextTrackCueList::IsCueExist(TextTrackCue *aCue)
{
if (aCue && mList.Contains(aCue)) {
return true;
}
return false;
}
} // namespace dom
} // namespace mozilla