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 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 /**

   Eric D Vaughan

   A frame that can have multiple children. Only one child may be displayed at one time. So the

   can be flipped though like a deck of cards.

 **/

 #ifndef nsGridRowGroupFrame_h___

 #define nsGridRowGroupFrame_h___

 #include "mozilla/Attributes.h"

 #include "nsBoxFrame.h"

 /**

  * A frame representing a grid row (or column) group, which is usually

  * an element that is a child of a grid and contains all the rows (or

  * all the columns).  However, multiple levels of groups are allowed, so

  * the parent or child could instead be another group.

  */

 class nsGridRowGroupFrame : public nsBoxFrame

 {

 public:

   NS_DECL_FRAMEARENA_HELPERS

 #ifdef DEBUG_FRAME_DUMP

   virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE

   {

       return MakeFrameName(NS_LITERAL_STRING("nsGridRowGroup"), aResult);

   }

 #endif

   nsGridRowGroupFrame(nsIPresShell* aPresShell,

                       nsStyleContext* aContext,

                       nsBoxLayout* aLayoutManager):

     nsBoxFrame(aPresShell, aContext, false, aLayoutManager) {}

   virtual nscoord GetFlex(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;

 }; // class nsGridRowGroupFrame

 #endif