/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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/. */

/**

  Author:

  Eric D Vaughan

**/

#ifndef nsGridRowLayout_h___

#define nsGridRowLayout_h___

#include "mozilla/Attributes.h"

#include "nsSprocketLayout.h"

#include "nsIGridPart.h"

class nsGridRowGroupLayout;

class nsGridLayout2;

class nsBoxLayoutState;

class nsGrid;

/**

 * A common base class for nsGridRowLeafLayout (the nsBoxLayout object

 * for a grid row or column) and nsGridRowGroupLayout (the nsBoxLayout

 * object for a grid row group or column group).

 */

// XXXldb This needs a name that indicates that it's a base class for

// both row and rows (row-group).

class nsGridRowLayout : public nsSprocketLayout,

                        public nsIGridPart

{

public:

  NS_DECL_ISUPPORTS_INHERITED

  virtual nsGridRowGroupLayout* CastToRowGroupLayout() override { return nullptr; }

  virtual nsGridLayout2* CastToGridLayout() override { return nullptr; }

  virtual nsGrid* GetGrid(nsIFrame* aBox, int32_t* aIndex, nsGridRowLayout* aRequestor=nullptr) override;

  virtual nsIGridPart* GetParentGridPart(nsIFrame* aBox, nsIFrame** aParentBox) override;

  virtual void ChildrenInserted(nsIFrame* aBox, nsBoxLayoutState& aState,

                                nsIFrame* aPrevBox,

                                const nsFrameList::Slice& aNewChildren) override;

  virtual void ChildrenAppended(nsIFrame* aBox, nsBoxLayoutState& aState,

                                const nsFrameList::Slice& aNewChildren) override;

  virtual void ChildrenRemoved(nsIFrame* aBox, nsBoxLayoutState& aState, nsIFrame* aChildList) override;

  virtual void ChildrenSet(nsIFrame* aBox, nsBoxLayoutState& aState, nsIFrame* aChildList) override;

  virtual nsMargin GetTotalMargin(nsIFrame* aBox, bool aIsHorizontal) override;

  virtual nsIGridPart* AsGridPart() override { return this; }

protected:

  virtual void ChildAddedOrRemoved(nsIFrame* aBox, nsBoxLayoutState& aState)=0;

  nsGridRowLayout();

  virtual ~nsGridRowLayout();

};

#endif