gecko-dev/layout/xul/nsStackFrame.h

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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 Stack of cards.
**/
#ifndef nsStackFrame_h___
#define nsStackFrame_h___
#include "mozilla/Attributes.h"
#include "nsBoxFrame.h"
class nsStackFrame final : public nsBoxFrame
{
public:
NS_DECL_FRAMEARENA_HELPERS(nsStackFrame)
friend nsIFrame* NS_NewStackFrame(nsIPresShell* aPresShell,
nsStyleContext* aContext);
#ifdef DEBUG_FRAME_DUMP
virtual nsresult GetFrameName(nsAString& aResult) const override
{
return MakeFrameName(NS_LITERAL_STRING("Stack"), aResult);
}
#endif
virtual void BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists) override;
protected:
explicit nsStackFrame(nsStyleContext* aContext);
}; // class nsStackFrame
#endif