Index: third_party/WebKit/Source/core/layout/ng/ng_box_iterator.cc |
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_box_iterator.cc b/third_party/WebKit/Source/core/layout/ng/ng_box_iterator.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..7aab784c618de18d0835b2ba40588da5387f67bc |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/layout/ng/ng_box_iterator.cc |
@@ -0,0 +1,31 @@ |
+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "core/layout/ng/ng_box_iterator.h" |
+#include "core/layout/ng/ng_box.h" |
+ |
+namespace blink { |
+ |
+NGBoxIterator::NGBoxIterator(const LayoutObject* layoutObject) |
+ : m_layoutObject(layoutObject), m_currentChild(nullptr) {} |
+ |
+NGBox NGBoxIterator::first() { |
+ reset(); |
+ return next(); |
+} |
+ |
+NGBox NGBoxIterator::next() { |
+ if (!m_currentChild) { |
+ m_currentChild = m_layoutObject->slowFirstChild(); |
+ } else { |
+ m_currentChild = m_layoutObject->nextSibling(); |
+ } |
+ return NGBox(m_currentChild); |
+} |
+ |
+void NGBoxIterator::reset() { |
+ m_currentChild = nullptr; |
+} |
+ |
+} // namespace blink |