/* -*- 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/. */

#ifndef nsGridLayout2_h___

#define nsGridLayout2_h___

#include "mozilla/Attributes.h"

#include "nsStackLayout.h"

#include "nsIGridPart.h"

#include "nsCoord.h"

#include "nsGrid.h"

class nsGridRowGroupLayout;

class nsGridRowLayout;

class nsGridRow;

class nsBoxLayoutState;

/**

 * The nsBoxLayout implementation for a grid.

 */

class nsGridLayout2 final : public nsStackLayout,

                            public nsIGridPart

{

public:

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

  NS_DECL_ISUPPORTS_INHERITED

  NS_IMETHOD XULLayout(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;

  virtual void IntrinsicISizesDirty(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;

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

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

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

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

    MOZ_ASSERT_UNREACHABLE("Should not be called"); return nullptr;

  }

  virtual nsSize GetXULMinSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;

  virtual nsSize GetXULMaxSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;

  virtual nsSize GetXULPrefSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;

  virtual void CountRowsColumns(nsIFrame* aBox, int32_t& aRowCount, int32_t& aComputedColumnCount) override { aRowCount++; }

  virtual void DirtyRows(nsIFrame* aBox, nsBoxLayoutState& aState) override { }

  virtual int32_t BuildRows(nsIFrame* aBox, nsGridRow* aRows) override;

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

  virtual Type GetType() override { return eGrid; }

  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 nsIGridPart* AsGridPart() override { return this; }

  static void AddOffset(nsIFrame* aChild, nsSize& aSize);

protected:

  explicit nsGridLayout2(nsIPresShell* aShell);

  virtual ~nsGridLayout2();

  nsGrid mGrid;

private:

  void AddWidth(nsSize& aSize, nscoord aSize2, bool aIsHorizontal);

}; // class nsGridLayout2

#endif