gecko-dev/layout/style/DocumentStyleRootIterator.cpp

43 строки
1.1 KiB
C++

/* -*- 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 "DocumentStyleRootIterator.h"
#include "mozilla/dom/Element.h"
#include "nsContentUtils.h"
namespace mozilla {
DocumentStyleRootIterator::DocumentStyleRootIterator(nsIDocument* aDocument)
: mPosition(0)
{
MOZ_COUNT_CTOR(DocumentStyleRootIterator);
if (Element* root = aDocument->GetRootElement()) {
mStyleRoots.AppendElement(root);
}
nsContentUtils::AppendDocumentLevelNativeAnonymousContentTo(
aDocument, mStyleRoots);
}
Element*
DocumentStyleRootIterator::GetNextStyleRoot()
{
for (;;) {
if (mPosition >= mStyleRoots.Length()) {
return nullptr;
}
nsIContent* next = mStyleRoots[mPosition];
++mPosition;
if (next->IsElement()) {
return next->AsElement();
}
}
}
} // namespace mozilla