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/**
 
  Author:
  Eric D Vaughan

**/

#ifndef nsGridRowGroupLayout_h___
#define nsGridRowGroupLayout_h___

#include "nsGridRowLayout.h"

class nsGridRowGroupLayout : public nsGridRowLayout
{
public:

  friend nsresult NS_NewGridRowGroupLayout(nsIPresShell* aPresShell, nsIBoxLayout** aNewLayout);

  NS_IMETHOD CastToRowGroupLayout(nsGridRowGroupLayout** aRowGroup);
  NS_IMETHOD GetMinSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
  NS_IMETHOD GetPrefSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
  NS_IMETHOD GetMaxSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
  NS_IMETHOD CountRowsColumns(nsIBox* aBox, PRInt32& aRowCount, PRInt32& aComputedColumnCount);
  NS_IMETHOD DirtyRows(nsIBox* aBox, nsBoxLayoutState& aState);
  NS_IMETHOD BuildRows(nsIBox* aBox, nsGridRow* aRows, PRInt32* aCount);
  NS_IMETHOD GetTotalMargin(nsIBox* aBox, nsMargin& aMargin, PRBool aIsHorizontal);
  NS_IMETHOD GetRowCount(PRInt32& aRowCount);

protected:
  nsGridRowGroupLayout(nsIPresShell* aShell);
  virtual ~nsGridRowGroupLayout();

  NS_IMETHOD ChildAddedOrRemoved(nsIBox* aBox, nsBoxLayoutState& aState);
  static void AddWidth(nsSize& aSize, nscoord aSize2, PRBool aIsHorizontal);

private:
  nsGridRow* mRowColumn;
  PRInt32 mRowCount;
};

#endif