зеркало из https://github.com/mozilla/gecko-dev.git
79 строки
2.3 KiB
C++
79 строки
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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Eric D Vaughan
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A frame that can have multiple children. Only one child may be displayed at
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one time. So the can be flipped though like a deck of cards.
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**/
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#ifndef nsDeckFrame_h___
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#define nsDeckFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsBoxFrame.h"
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namespace mozilla {
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class PresShell;
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} // namespace mozilla
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class nsDeckFrame final : public nsBoxFrame {
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public:
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsDeckFrame)
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friend nsIFrame* NS_NewDeckFrame(mozilla::PresShell* aPresShell,
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ComputedStyle* aStyle);
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virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType) override;
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NS_IMETHOD DoXULLayout(nsBoxLayoutState& aState) override;
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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virtual void RemoveFrame(ChildListID aListID, nsIFrame* aOldFrame) override;
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virtual void BuildDisplayListForChildren(
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nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists) override;
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virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override;
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override {
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return MakeFrameName(u"Deck"_ns, aResult);
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}
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#endif
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explicit nsDeckFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
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nsIFrame* GetSelectedBox();
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// Returns whether this frame has any <browser> or <iframe> elements.
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// Note that this function traverses down all descendants so this function
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// should be used only in debug builds.
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bool HasPossiblyRemoteContents() const;
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protected:
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void IndexChanged();
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int32_t GetSelectedIndex();
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void HideBox(nsIFrame* aBox);
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void ShowBox(nsIFrame* aBox);
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private:
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int32_t mIndex = 0;
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nsIFrame* mSelectedBoxCache = nullptr;
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void Animate(nsIFrame*, bool);
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}; // class nsDeckFrame
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#endif
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