/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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/FontFaceSetIterator.h"

namespace mozilla {

namespace dom {

NS_IMPL_CYCLE_COLLECTION(FontFaceSetIterator, mFontFaceSet)

NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(FontFaceSetIterator, AddRef)

NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(FontFaceSetIterator, Release)

FontFaceSetIterator::FontFaceSetIterator(FontFaceSet* aFontFaceSet,

                                         bool aIsKeyAndValue)

  : mFontFaceSet(aFontFaceSet)

  , mNextIndex(0)

  , mIsKeyAndValue(aIsKeyAndValue)

{

  MOZ_COUNT_CTOR(FontFaceSetIterator);

}

FontFaceSetIterator::~FontFaceSetIterator()

{

  MOZ_COUNT_DTOR(FontFaceSetIterator);

}

bool

FontFaceSetIterator::WrapObject(JSContext* aCx,

                                JS::Handle<JSObject*> aGivenProto,

                                JS::MutableHandle<JSObject*> aReflector)

{

  return FontFaceSetIterator_Binding::Wrap(aCx, this, aGivenProto, aReflector);

}

void

FontFaceSetIterator::Next(JSContext* aCx, FontFaceSetIteratorResult& aResult,

                          ErrorResult& aRv)

{

  if (!mFontFaceSet) {

    aResult.mDone = true;

    return;

  }

  FontFace* face = mFontFaceSet->GetFontFaceAt(mNextIndex++);

  if (!face) {

    aResult.mValue.setUndefined();

    aResult.mDone = true;

    mFontFaceSet = nullptr;

    return;

  }

  JS::Rooted<JS::Value> value(aCx);

  if (!ToJSValue(aCx, face, &value)) {

    aRv.Throw(NS_ERROR_FAILURE);

    return;

  }

  if (mIsKeyAndValue) {

    JS::AutoValueArray<2> values(aCx);

    values[0].set(value);

    values[1].set(value);

    JS::Rooted<JSObject*> array(aCx);

    array = JS_NewArrayObject(aCx, values);

    if (array) {

      aResult.mValue.setObject(*array);

    }

  } else {

    aResult.mValue = value;

  }

  aResult.mDone = false;

}

} // namespace dom

} // namespace mozilla