/* * Copyright (C) 2018 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #if ENABLE(LAYOUT_FORMATTING_CONTEXT) #include "LayoutBox.h" #include <wtf/IsoMalloc.h> #include <wtf/WeakPtr.h> namespace WebCore { class RenderStyle; namespace Layout { class Container : public Box { WTF_MAKE_ISO_ALLOCATED(Container); public: Container(Optional<ElementAttributes>, RenderStyle&&, BaseTypeFlags); const Box* firstChild() const { return m_firstChild; } const Box* firstInFlowChild() const; const Box* firstInFlowOrFloatingChild() const; const Box* lastChild() const { return m_lastChild; } const Box* lastInFlowChild() const; const Box* lastInFlowOrFloatingChild() const; bool hasChild() const { return firstChild(); } bool hasInFlowChild() const { return firstInFlowChild(); } bool hasInFlowOrFloatingChild() const { return firstInFlowOrFloatingChild(); } const Vector<WeakPtr<const Box>>& outOfFlowDescendants() const { return m_outOfFlowDescendants; } void setFirstChild(Box&); void setLastChild(Box&); void addOutOfFlowDescendant(const Box&); private: Box* m_firstChild { nullptr }; Box* m_lastChild { nullptr }; Vector<WeakPtr<const Box>> m_outOfFlowDescendants; }; } } SPECIALIZE_TYPE_TRAITS_LAYOUT_BOX(Container, isContainer()) #endif