palemoon27/dom/media/webspeech/recognition/SpeechGrammarList.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 "SpeechGrammarList.h"

#include "mozilla/dom/SpeechGrammarListBinding.h"
#include "mozilla/ErrorResult.h"
#include "nsCOMPtr.h"
#include "nsXPCOMStrings.h"
#include "SpeechRecognition.h"

namespace mozilla {
namespace dom {

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(SpeechGrammarList, mParent, mItems)
NS_IMPL_CYCLE_COLLECTING_ADDREF(SpeechGrammarList)
NS_IMPL_CYCLE_COLLECTING_RELEASE(SpeechGrammarList)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SpeechGrammarList)
  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END

SpeechGrammarList::SpeechGrammarList(nsISupports* aParent, nsISpeechRecognitionService* aRecognitionService)
  : mParent(aParent)
{
  this->mRecognitionService = aRecognitionService;
}

SpeechGrammarList::~SpeechGrammarList()
{
}

already_AddRefed<SpeechGrammarList>
SpeechGrammarList::Constructor(const GlobalObject& aGlobal,
                               ErrorResult& aRv)
{
  nsCOMPtr<nsISpeechRecognitionService> recognitionService;
  recognitionService = GetSpeechRecognitionService();
  if (!recognitionService) {
    aRv.Throw(NS_ERROR_NOT_AVAILABLE);
    return nullptr;
  } else {
    nsRefPtr<SpeechGrammarList> speechGrammarList =
      new SpeechGrammarList(aGlobal.GetAsSupports(), recognitionService);
    return speechGrammarList.forget();
  }
}

JSObject*
SpeechGrammarList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
  return SpeechGrammarListBinding::Wrap(aCx, this, aGivenProto);
}

nsISupports*
SpeechGrammarList::GetParentObject() const
{
  return mParent;
}

uint32_t
SpeechGrammarList::Length() const
{
  return mItems.Length();
}

already_AddRefed<SpeechGrammar>
SpeechGrammarList::Item(uint32_t aIndex, ErrorResult& aRv)
{
  nsRefPtr<SpeechGrammar> result = mItems.ElementAt(aIndex);
  return result.forget();
}

void
SpeechGrammarList::AddFromURI(const nsAString& aSrc,
                              const Optional<float>& aWeight,
                              ErrorResult& aRv)
{
  aRv.Throw(NS_ERROR_NOT_IMPLEMENTED);
  return;
}

void
SpeechGrammarList::AddFromString(const nsAString& aString,
                                 const Optional<float>& aWeight,
                                 ErrorResult& aRv)
{
  SpeechGrammar* speechGrammar = new SpeechGrammar(mParent);
  speechGrammar->SetSrc(aString, aRv);
  mItems.AppendElement(speechGrammar);
  mRecognitionService->ValidateAndSetGrammarList(speechGrammar, nullptr);
  return;
}

already_AddRefed<SpeechGrammar>
SpeechGrammarList::IndexedGetter(uint32_t aIndex, bool& aPresent,
                                 ErrorResult& aRv)
{
  if (aIndex >= Length()) {
    aPresent = false;
    return nullptr;
  }
  ErrorResult rv;
  aPresent = true;
  return Item(aIndex, rv);
}

} // namespace dom
} // namespace mozilla