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/* -*- 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"
#include "js/Array.h" // JS::NewArrayObject
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION(FontFaceSetIterator, mFontFaceSet)
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;
}
// Skip over non-Author origin fonts (GetFontFaceAt returns nullptr
// for those).
FontFace* face;
while (!(face = mFontFaceSet->GetFontFaceAt(mNextIndex++))) {
if (mNextIndex >= mFontFaceSet->SizeIncludingNonAuthorOrigins()) {
break; // this iterator is done
}
}
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::RootedValueArray<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
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