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/*
* Copyright (C) 2016 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 "Node.h"
#include "StyleChange.h"
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/ListHashSet.h>
namespace WebCore {
class ContainerNode;
class Document;
class Element;
class Node;
class RenderStyle;
class Text;
namespace Style {
struct ElementUpdate {
std::unique_ptr<RenderStyle> style;
Change change { NoChange };
bool recompositeLayer { false };
};
enum class DescendantsToResolve { None, ChildrenWithExplicitInherit, Children, All };
struct ElementUpdates {
ElementUpdate update;
DescendantsToResolve descendantsToResolve { DescendantsToResolve::None };
std::optional<ElementUpdate> beforePseudoElementUpdate;
std::optional<ElementUpdate> afterPseudoElementUpdate;
};
struct TextUpdate {
unsigned offset { 0 };
unsigned length { std::numeric_limits<unsigned>::max() };
std::optional<std::unique_ptr<RenderStyle>> inheritedDisplayContentsStyle;
};
class Update {
WTF_MAKE_FAST_ALLOCATED;
public:
Update(Document&);
const ListHashSet<ContainerNode*>& roots() const { return m_roots; }
const ElementUpdates* elementUpdates(const Element&) const;
ElementUpdates* elementUpdates(const Element&);
const TextUpdate* textUpdate(const Text&) const;
const RenderStyle* elementStyle(const Element&) const;
RenderStyle* elementStyle(const Element&);
const Document& document() const { return m_document; }
unsigned size() const { return m_elements.size() + m_texts.size(); }
void addElement(Element&, Element* parent, ElementUpdates&&);
void addText(Text&, Element* parent, TextUpdate&&);
void addText(Text&, TextUpdate&&);
private:
void addPossibleRoot(Element*);
Document& m_document;
ListHashSet<ContainerNode*> m_roots;
HashMap<const Element*, ElementUpdates> m_elements;
HashMap<const Text*, TextUpdate> m_texts;
};
}
}