chromium/src/third_party/blink/renderer/core/layout/layout_list_item.h

/*
 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009 Apple Inc.
 *               All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_LIST_ITEM_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_LIST_ITEM_H_

#include "third_party/blink/renderer/core/html/list_item_ordinal.h"
#include "third_party/blink/renderer/core/layout/layout_block_flow.h"

namespace blink {

class LayoutListItem final : public LayoutBlockFlow {
 public:
  explicit LayoutListItem(Element*);

  int Value() const;

  bool IsEmpty() const;

  LayoutObject* Marker() const {
    NOT_DESTROYED();
    Element* list_item = To<Element>(GetNode());
    return list_item->PseudoElementLayoutObject(kPseudoIdMarker);
  }

  ListItemOrdinal& Ordinal() {
    NOT_DESTROYED();
    return ordinal_;
  }
  void OrdinalValueChanged();

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

  void RecalcVisualOverflow() override;

  void UpdateMarkerTextIfNeeded();

  void UpdateCounterStyle();

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

  void InsertedIntoTree() override;
  void WillBeRemovedFromTree() override;

  void Paint(const PaintInfo&) const override;

  void SubtreeDidChange() final;

  // Returns true if we re-attached and updated the location of the marker.
  bool UpdateMarkerLocation();

  void UpdateOverflow();

  void StyleDidChange(StyleDifference, const ComputedStyle* old_style) override;

  void ComputeVisualOverflow(bool recompute_floats) final;

  void AddLayoutOverflowFromChildren() override;

  void WillBeDestroyed() override;

  void AlignMarkerInBlockDirection();

  bool PrepareForBlockDirectionAlign(const LayoutObject*);

  void UpdateLayout() override;

  ListItemOrdinal ordinal_;
  bool need_block_direction_align_;
};

template <>
struct DowncastTraits<LayoutListItem> {
  static bool AllowFrom(const LayoutObject& object) {
    return object.IsListItem();
  }
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_LIST_ITEM_H_