/* -*- 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/. */

#include "mozilla/Attributes.h"

#include "nsBoxFrame.h"

class nsITreeBoxObject;

nsIFrame* NS_NewTreeColFrame(nsIPresShell* aPresShell,

                             ComputedStyle* aStyle);

class nsTreeColFrame final : public nsBoxFrame

{

public:

  NS_DECL_FRAMEARENA_HELPERS(nsTreeColFrame)

  explicit nsTreeColFrame(ComputedStyle* aStyle):

    nsBoxFrame(aStyle, kClassID) {}

  virtual void Init(nsIContent*       aContent,

                    nsContainerFrame* aParent,

                    nsIFrame*         aPrevInFlow) override;

  virtual void DestroyFrom(nsIFrame* aDestructRoot, PostDestroyData& aPostDestroyData) override;

  virtual void BuildDisplayListForChildren(nsDisplayListBuilder*   aBuilder,

                                           const nsDisplayListSet& aLists) override;

  virtual nsresult AttributeChanged(int32_t aNameSpaceID,

                                    nsAtom* aAttribute,

                                    int32_t aModType) override;

  virtual void SetXULBounds(nsBoxLayoutState& aBoxLayoutState, const nsRect& aRect,

                            bool aRemoveOverflowArea = false) override;

  friend nsIFrame* NS_NewTreeColFrame(nsIPresShell* aPresShell,

                                      ComputedStyle* aStyle);

protected:

  virtual ~nsTreeColFrame();

  /**

   * @return the tree box object of the tree this column belongs to, or nullptr.

   */

  nsITreeBoxObject* GetTreeBoxObject();

  /**

   * Helper method that gets the TreeColumns object this column belongs to

   * and calls InvalidateColumns() on it.

   */

  void InvalidateColumns(bool aCanWalkFrameTree = true);

};