/* -*- 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 "mozilla/ComputedStyle.h"
#include "nsBoxFrame.h"

namespace mozilla {
class PresShell;
namespace dom {
class XULTreeElement;
}
}  // namespace mozilla

nsIFrame* NS_NewTreeColFrame(mozilla::PresShell* aPresShell,
                             mozilla::ComputedStyle* aStyle);

class nsTreeColFrame final : public nsBoxFrame {
 public:
  NS_DECL_FRAMEARENA_HELPERS(nsTreeColFrame)

  explicit nsTreeColFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
      : nsBoxFrame(aStyle, aPresContext, 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(mozilla::PresShell* aPresShell,
                                      ComputedStyle* aStyle);

 protected:
  virtual ~nsTreeColFrame();

  /**
   * @return the tree that this column belongs to, or nullptr.
   */
  mozilla::dom::XULTreeElement* GetTree();

  /**
   * Helper method that gets the TreeColumns object this column belongs to
   * and calls InvalidateColumns() on it.
   */
  void InvalidateColumns(bool aCanWalkFrameTree = true);
};