third_party/WebKit/Source/core/layout/ng/NGBlockLayoutAlgorithm.h

// 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.

#ifndef NGBlockLayoutAlgorithm_h
#define NGBlockLayoutAlgorithm_h

#include "wtf/RefPtr.h"

namespace blink {

class ComputedStyle;
class LayoutBox;
class NGConstraintSpace;
class NGFragment;

// A class for general block layout (e.g. a <div> with no special style).
// Lays out the children in sequence.
class NGBlockLayoutAlgorithm {
public:
    NGBlockLayoutAlgorithm(const ComputedStyle*);

    // Actual layout implementation. Lays out the children in sequence within
    // the constraints given by the NGConstraintSpace. Returns a fragment
    // with the resulting layout information.
    // This function can not be const because for interruptible layout, we have
    // to be able to store state information.
    NGFragment* layout(const NGConstraintSpace&);
private:
    RefPtr<const ComputedStyle> m_style;
};

} // namespace blink

#endif // NGBlockLayoutAlgorithm_h