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/**
 
  Author:
  Eric D Vaughan

**/

#ifndef nsGridLayout2_h___
#define nsGridLayout2_h___

#include "nsStackLayout.h"
#include "nsIGridPart.h"
#include "nsCOMPtr.h"
#include "nsIBox.h"
#include "nsGrid.h"

class nsGridRowGroupLayout;
class nsGridRowLayout;
class nsGridRow;
class nsBoxLayoutState;
class nsGridCell;

class nsGridLayout2 : public nsStackLayout, 
                      public nsIGridPart
{
public:

  friend nsresult NS_NewGridLayout2(nsIPresShell* aPresShell, nsIBoxLayout** aNewLayout);

  NS_DECL_ISUPPORTS_INHERITED

  NS_IMETHOD Layout(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState);

  NS_IMETHOD CastToRowGroupLayout(nsGridRowGroupLayout** aRowGroup);
  NS_IMETHOD CastToGridLayout(nsGridLayout2** aGrid);
  NS_IMETHOD GetGrid(nsIBox* aBox, nsGrid** aList, PRInt32* aIndex, nsGridRowLayout* aRequestor=nsnull);
  NS_IMETHOD GetParentGridPart(nsIBox* aBox, nsIBox** aParentBox, nsIGridPart** aParentGridPart);
  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:

  nsGridLayout2(nsIPresShell* aShell);
  nsGrid mGrid;

private:
  void AddWidth(nsSize& aSize, nscoord aSize2, PRBool aIsHorizontal);


}; // class nsGridLayout2


#endif