text: /*
   * Copyright (C) 2008 Apple Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1.  Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   * 2.  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.
   * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
   *     its contributors may be used to endorse or promote products derived
   *     from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef AXTableCell_h
  #define AXTableCell_h
  
  #include "modules/accessibility/AXLayoutObject.h"
  
  namespace blink {
  
  class AXObjectCacheImpl;
  
  class MODULES_EXPORT AXTableCell : public AXLayoutObject {
    WTF_MAKE_NONCOPYABLE(AXTableCell);
  
   protected:
    AXTableCell(LayoutObject*, AXObjectCacheImpl&);
  
   public:
    static AXTableCell* Create(LayoutObject*, AXObjectCacheImpl&);
    ~AXTableCell() override;
  
    bool IsTableCell() const final;
  
    // fills in the start location and row span of cell
    virtual void RowIndexRange(std::pair<unsigned, unsigned>& row_range);
    // fills in the start location and column span of cell
    virtual void ColumnIndexRange(std::pair<unsigned, unsigned>& column_range);
    // In the case of cells that act as row or column headers.
    SortDirection GetSortDirection() const final;
    virtual AccessibilityRole ScanToDecideHeaderRole();
  
    unsigned AriaColumnIndex() const;
    unsigned AriaRowIndex() const;
    void SetARIAColIndexFromRow(int index) { aria_col_index_from_row_ = index; }
    virtual bool CanSetSelectedAttribute() const { return false; }
  
   protected:
    virtual AXObject* ParentTable() const;
    AccessibilityRole DetermineAccessibilityRole() final;
  
   private:
    bool IsTableHeaderCell() const;
    bool IsRowHeaderCell() const;
    bool IsColumnHeaderCell() const;
  
    bool ComputeAccessibilityIsIgnored(IgnoredReasons* = nullptr) const final;
  
    unsigned aria_col_index_from_row_ = 0;
  };
  
  DEFINE_AX_OBJECT_TYPE_CASTS(AXTableCell, IsTableCell());
  
  }  // namespace blink
  
  #endif  // AXTableCell_h
  