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/* -*- 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 */
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 deck of cards.
#ifndef nsDeckFrame_h___
#define nsDeckFrame_h___
#include "mozilla/Attributes.h"
#include "nsBoxFrame.h"
namespace mozilla {
class PresShell;
} // namespace mozilla
class nsDeckFrame final : public nsBoxFrame {
friend nsIFrame* NS_NewDeckFrame(mozilla::PresShell* aPresShell,
ComputedStyle* aStyle);
virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
int32_t aModType) override;
NS_IMETHOD DoXULLayout(nsBoxLayoutState& aState) override;
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
virtual void RemoveFrame(ChildListID aListID, nsIFrame* aOldFrame) override;
virtual void BuildDisplayListForChildren(
nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists) override;
virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) override;
virtual nsresult GetFrameName(nsAString& aResult) const override {
return MakeFrameName(u"Deck"_ns, aResult);
explicit nsDeckFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
nsIFrame* GetSelectedBox();
// Returns whether this frame has any <browser> or <iframe> elements.
// Note that this function traverses down all descendants so this function
// should be used only in debug builds.
bool HasPossiblyRemoteContents() const;
void IndexChanged();
int32_t GetSelectedIndex();
void HideBox(nsIFrame* aBox);
void ShowBox(nsIFrame* aBox);
int32_t mIndex = 0;
nsIFrame* mSelectedBoxCache = nullptr;
void Animate(nsIFrame*, bool);
}; // class nsDeckFrame