third_party/WebKit/Source/core/layout/LayoutRubyBase.h

/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
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 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 */

#ifndef LayoutRubyBase_h
#define LayoutRubyBase_h

#include "core/layout/LayoutBlockFlow.h"

namespace blink {

class LayoutRubyRun;

class LayoutRubyBase final : public LayoutBlockFlow {
 public:
  ~LayoutRubyBase() override;
  static LayoutRubyBase* CreateAnonymous(Document*);

  const char* GetName() const override { return "LayoutRubyBase"; }

  bool IsOfType(LayoutObjectType type) const override {
    return type == kLayoutObjectRubyBase || LayoutBlockFlow::IsOfType(type);
  }

  bool IsChildAllowed(LayoutObject*, const ComputedStyle&) const override;

 private:
  LayoutRubyBase();

  ETextAlign TextAlignmentForLine(bool ends_with_soft_break) const override;
  void AdjustInlineDirectionLineBounds(
      unsigned expansion_opportunity_count,
      LayoutUnit& logical_left,
      LayoutUnit& logical_width) const override;

  void MoveChildren(LayoutRubyBase* to_base,
                    LayoutObject* before_child = nullptr);
  void MoveInlineChildren(LayoutRubyBase* to_base,
                          LayoutObject* before_child = nullptr);
  void MoveBlockChildren(LayoutRubyBase* to_base,
                         LayoutObject* before_child = nullptr);

  // Allow LayoutRubyRun to manipulate the children within ruby bases.
  friend class LayoutRubyRun;
};

DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutRubyBase, IsRubyBase());

}  // namespace blink

#endif  // LayoutRubyBase_h