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/*
* Copyright (C) 2016-2017 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
#include "RenderTreeBuilder.h"
#include "RenderTreePosition.h"
#include "StyleChange.h"
#include "StyleTreeResolver.h"
#include "StyleUpdate.h"
#include <wtf/Vector.h>
namespace WebCore {
class ContainerNode;
class Document;
class Element;
class Node;
class RenderStyle;
class Text;
class RenderTreeUpdater {
public:
RenderTreeUpdater(Document&, Style::PostResolutionCallbackDisabler&);
~RenderTreeUpdater();
void commit(std::unique_ptr<const Style::Update>);
static void tearDownRenderers(Element&);
static void tearDownRenderersAfterSlotChange(Element& host);
static void tearDownRenderer(Text&);
private:
class GeneratedContent;
void updateRenderTree(ContainerNode& root);
void updateTextRenderer(Text&, const Style::TextUpdate*);
void createTextRenderer(Text&, const Style::TextUpdate*);
void updateElementRenderer(Element&, const Style::ElementUpdate&);
void updateSVGRenderer(Element&);
void updateRendererStyle(RenderElement&, RenderStyle&&, StyleDifference);
void updateRenderViewStyle();
void createRenderer(Element&, RenderStyle&&);
void updateBeforeDescendants(Element&, const Style::ElementUpdate*);
void updateAfterDescendants(Element&, const Style::ElementUpdate*);
bool textRendererIsNeeded(const Text& textNode);
void storePreviousRenderer(Node&);
struct Parent {
Element* element { nullptr };
const Style::ElementUpdate* update { nullptr };
std::optional<RenderTreePosition> renderTreePosition;
bool didCreateOrDestroyChildRenderer { false };
RenderObject* previousChildRenderer { nullptr };
Parent(ContainerNode& root);
Parent(Element&, const Style::ElementUpdate*);
};
Parent& parent() { return m_parentStack.last(); }
Parent& renderingParent();
RenderTreePosition& renderTreePosition();
GeneratedContent& generatedContent() { return *m_generatedContent; }
void pushParent(Element&, const Style::ElementUpdate*);
void popParent();
void popParentsToDepth(unsigned depth);
// FIXME: Use OptionSet.
enum class TeardownType { Full, FullAfterSlotChange, RendererUpdate, RendererUpdateCancelingAnimations };
static void tearDownRenderers(Element&, TeardownType, RenderTreeBuilder&);
static void tearDownTextRenderer(Text&, RenderTreeBuilder&);
static void tearDownLeftoverChildrenOfComposedTree(Element&, RenderTreeBuilder&);
static void tearDownLeftoverPaginationRenderersIfNeeded(Element&, RenderTreeBuilder&);
RenderView& renderView();
Document& m_document;
std::unique_ptr<const Style::Update> m_styleUpdate;
Vector<Parent> m_parentStack;
std::unique_ptr<GeneratedContent> m_generatedContent;
RenderTreeBuilder m_builder;
};
} // namespace WebCore
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