#pragma once
#if ENABLE(LAYOUT_FORMATTING_CONTEXT)
#include "FloatingState.h"
#include "FormattingContext.h"
#include "LayoutBox.h"
#include "LayoutState.h"
#include "LayoutUnit.h"
#include <wtf/IsoMalloc.h>
namespace WebCore {
namespace Layout {
class Box;
enum class StyleDiff;
class FormattingState {
WTF_MAKE_ISO_ALLOCATED(FormattingState);
public:
virtual ~FormattingState();
virtual std::unique_ptr<FormattingContext> createFormattingContext(const Box& formattingContextRoot) = 0;
FloatingState& floatingState() const { return m_floatingState; }
void markNeedsLayout(const Box&, StyleDiff);
bool needsLayout(const Box&);
void setInstrinsicWidthConstraints(const Box&, FormattingContext::InstrinsicWidthConstraints);
void clearInstrinsicWidthConstraints(const Box&);
Optional<FormattingContext::InstrinsicWidthConstraints> instrinsicWidthConstraints(const Box&) const;
bool isBlockFormattingState() const { return m_type == Type::Block; }
bool isInlineFormattingState() const { return m_type == Type::Inline; }
LayoutState& layoutState() const { return m_layoutState; }
protected:
enum class Type { Block, Inline };
FormattingState(Ref<FloatingState>&&, Type, LayoutState&);
private:
LayoutState& m_layoutState;
Ref<FloatingState> m_floatingState;
HashMap<const Box*, FormattingContext::InstrinsicWidthConstraints> m_instrinsicWidthConstraints;
Type m_type;
};
inline void FormattingState::setInstrinsicWidthConstraints(const Box& layoutBox, FormattingContext::InstrinsicWidthConstraints instrinsicWidthConstraints)
{
ASSERT(!m_instrinsicWidthConstraints.contains(&layoutBox));
ASSERT(&m_layoutState.formattingStateForBox(layoutBox) == this);
m_instrinsicWidthConstraints.set(&layoutBox, instrinsicWidthConstraints);
}
inline void FormattingState::clearInstrinsicWidthConstraints(const Box& layoutBox)
{
m_instrinsicWidthConstraints.remove(&layoutBox);
}
inline Optional<FormattingContext::InstrinsicWidthConstraints> FormattingState::instrinsicWidthConstraints(const Box& layoutBox) const
{
ASSERT(&m_layoutState.formattingStateForBox(layoutBox) == this);
auto iterator = m_instrinsicWidthConstraints.find(&layoutBox);
if (iterator == m_instrinsicWidthConstraints.end())
return { };
return iterator->value;
}
}
}
#define SPECIALIZE_TYPE_TRAITS_LAYOUT_FORMATTING_STATE(ToValueTypeName, predicate) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::Layout::ToValueTypeName) \
static bool isType(const WebCore::Layout::FormattingState& formattingState) { return formattingState.predicate; } \
SPECIALIZE_TYPE_TRAITS_END()
#endif