dom/media/webvtt/TextTrackCueList.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "mozilla/dom/TextTrackCueList.h"
   7 #include "mozilla/dom/TextTrackCueListBinding.h"
   8 #include "mozilla/dom/TextTrackCue.h"
   9
  10 namespace mozilla::dom {
  11
  12 class CompareCuesByTime {
  13  public:
  14   bool Equals(TextTrackCue* aOne, TextTrackCue* aTwo) const { return false; }
  15   bool LessThan(TextTrackCue* aOne, TextTrackCue* aTwo) const {
  16     return aOne->StartTime() < aTwo->StartTime() ||
  17            (aOne->StartTime() == aTwo->StartTime() &&
  18             aOne->EndTime() >= aTwo->EndTime());
  19   }
  20 };
  21
  22 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(TextTrackCueList, mParent, mList)
  23
  24 NS_IMPL_CYCLE_COLLECTING_ADDREF(TextTrackCueList)
  25 NS_IMPL_CYCLE_COLLECTING_RELEASE(TextTrackCueList)
  26 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TextTrackCueList)
  27   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  28   NS_INTERFACE_MAP_ENTRY(nsISupports)
  29 NS_INTERFACE_MAP_END
  30
  31 TextTrackCueList::TextTrackCueList(nsISupports* aParent) : mParent(aParent) {}
  32
  33 TextTrackCueList::~TextTrackCueList() = default;
  34
  35 JSObject* TextTrackCueList::WrapObject(JSContext* aCx,
  36                                        JS::Handle<JSObject*> aGivenProto) {
  37   return TextTrackCueList_Binding::Wrap(aCx, this, aGivenProto);
  38 }
  39
  40 TextTrackCue* TextTrackCueList::IndexedGetter(uint32_t aIndex, bool& aFound) {
  41   aFound = aIndex < mList.Length();
  42   if (!aFound) {
  43     return nullptr;
  44   }
  45   return mList[aIndex];
  46 }
  47
  48 TextTrackCue* TextTrackCueList::operator[](uint32_t aIndex) {
  49   return mList.SafeElementAt(aIndex, nullptr);
  50 }
  51
  52 TextTrackCueList& TextTrackCueList::operator=(const TextTrackCueList& aOther) {
  53   mList = aOther.mList.Clone();
  54   return *this;
  55 }
  56
  57 TextTrackCue* TextTrackCueList::GetCueById(const nsAString& aId) {
  58   if (aId.IsEmpty()) {
  59     return nullptr;
  60   }
  61
  62   for (uint32_t i = 0; i < mList.Length(); i++) {
  63     if (aId.Equals(mList[i]->Id())) {
  64       return mList[i];
  65     }
  66   }
  67   return nullptr;
  68 }
  69
  70 void TextTrackCueList::AddCue(TextTrackCue& aCue) {
  71   if (mList.Contains(&aCue)) {
  72     return;
  73   }
  74   mList.InsertElementSorted(&aCue, CompareCuesByTime());
  75 }
  76
  77 void TextTrackCueList::RemoveCue(TextTrackCue& aCue, ErrorResult& aRv) {
  78   if (!mList.Contains(&aCue)) {
  79     aRv.Throw(NS_ERROR_DOM_NOT_FOUND_ERR);
  80     return;
  81   }
  82   mList.RemoveElement(&aCue);
  83 }
  84
  85 void TextTrackCueList::RemoveCue(TextTrackCue& aCue) {
  86   mList.RemoveElement(&aCue);
  87 }
  88
  89 void TextTrackCueList::RemoveCueAt(uint32_t aIndex) {
  90   if (aIndex < mList.Length()) {
  91     mList.RemoveElementAt(aIndex);
  92   }
  93 }
  94
  95 void TextTrackCueList::RemoveAll() { mList.Clear(); }
  96
  97 void TextTrackCueList::GetArray(nsTArray<RefPtr<TextTrackCue>>& aCues) {
  98   aCues = mList.Clone();
  99 }
 100
 101 void TextTrackCueList::SetCuesInactive() {
 102   for (uint32_t i = 0; i < mList.Length(); ++i) {
 103     mList[i]->SetActive(false);
 104   }
 105 }
 106
 107 void TextTrackCueList::NotifyCueUpdated(TextTrackCue* aCue) {
 108   if (aCue) {
 109     mList.RemoveElement(aCue);
 110     mList.InsertElementSorted(aCue, CompareCuesByTime());
 111   }
 112 }
 113
 114 bool TextTrackCueList::IsCueExist(TextTrackCue* aCue) {
 115   if (aCue && mList.Contains(aCue)) {
 116     return true;
 117   }
 118   return false;
 119 }
 120
 121 nsTArray<RefPtr<TextTrackCue>>& TextTrackCueList::GetCuesArray() {
 122   return mList;
 123 }
 124
 125 }  // namespace mozilla::dom