RenderTreeUpdater.h [plain text]
#ifndef RenderTreeUpdater_h
#define RenderTreeUpdater_h
#include "RenderTreePosition.h"
#include "StyleChange.h"
#include "StyleUpdate.h"
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/ListHashSet.h>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class ContainerNode;
class Document;
class Element;
class Node;
class RenderStyle;
class Text;
class RenderTreeUpdater {
public:
RenderTreeUpdater(Document&);
void commit(std::unique_ptr<Style::Update>);
enum class TeardownType { Normal, KeepHoverAndActive };
static void tearDownRenderers(Element&, TeardownType = TeardownType::Normal);
static void tearDownRenderer(Text&);
private:
void updateRenderTree(ContainerNode& root);
void updateTextRenderer(Text&);
void updateElementRenderer(Element&, Style::ElementUpdate&);
void createRenderer(Element&, RenderStyle&&);
void invalidateWhitespaceOnlyTextSiblingsAfterAttachIfNeeded(Node&);
void updateBeforeOrAfterPseudoElement(Element&, PseudoId);
struct Parent {
Element* element { nullptr };
Style::Change styleChange { Style::NoChange };
Optional<RenderTreePosition> renderTreePosition;
Parent(ContainerNode& root);
Parent(Element&, Style::Change);
};
Parent& parent() { return m_parentStack.last(); }
RenderTreePosition& renderTreePosition();
void pushParent(Element&, Style::Change);
void popParent();
void popParentsToDepth(unsigned depth);
Document& m_document;
std::unique_ptr<Style::Update> m_styleUpdate;
Vector<Parent> m_parentStack;
HashSet<Text*> m_invalidatedWhitespaceOnlyTextSiblings;
};
}
#endif