StyleTreeResolver.h [plain text]
#pragma once
#include "RenderStyleConstants.h"
#include "RenderTreePosition.h"
#include "SelectorChecker.h"
#include "SelectorFilter.h"
#include "StyleChange.h"
#include "StyleSharingResolver.h"
#include "StyleUpdate.h"
#include <wtf/Function.h>
#include <wtf/HashMap.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class ContainerNode;
class Document;
class Element;
class HTMLSlotElement;
class Node;
class RenderStyle;
class Settings;
class ShadowRoot;
class StyleResolver;
class Text;
class TreeChange;
namespace Style {
class TreeResolver {
public:
TreeResolver(Document&);
~TreeResolver();
std::unique_ptr<Update> resolve(Change);
static ElementUpdate createAnimatedElementUpdate(std::unique_ptr<RenderStyle>, RenderElement* existingRenderer, Document&);
private:
std::unique_ptr<RenderStyle> styleForElement(Element&, const RenderStyle& inheritedStyle);
void resolveComposedTree();
ElementUpdate resolveElement(Element&);
struct Scope : RefCounted<Scope> {
StyleResolver& styleResolver;
SelectorFilter selectorFilter;
SharingResolver sharingResolver;
ShadowRoot* shadowRoot { nullptr };
Scope* enclosingScope { nullptr };
Scope(Document&);
Scope(ShadowRoot&, Scope& enclosingScope);
};
struct Parent {
Element* element;
const RenderStyle& style;
Change change;
bool didPushScope { false };
bool elementNeedingStyleRecalcAffectsNextSiblingElementStyle { false };
Parent(Document&, Change);
Parent(Element&, const RenderStyle&, Change);
};
Scope& scope() { return m_scopeStack.last(); }
Parent& parent() { return m_parentStack.last(); }
void pushScope(ShadowRoot&);
void pushEnclosingScope();
void popScope();
void pushParent(Element&, const RenderStyle&, Change);
void popParent();
void popParentsToDepth(unsigned depth);
Document& m_document;
std::unique_ptr<RenderStyle> m_documentElementStyle;
Vector<Ref<Scope>, 4> m_scopeStack;
Vector<Parent, 32> m_parentStack;
std::unique_ptr<Update> m_update;
};
void queuePostResolutionCallback(Function<void ()>&&);
bool postResolutionCallbacksAreSuspended();
bool isPlaceholderStyle(const RenderStyle&);
class PostResolutionCallbackDisabler {
public:
explicit PostResolutionCallbackDisabler(Document&);
~PostResolutionCallbackDisabler();
};
}
}