#include "config.h"
#include "LayoutState.h"
#if ENABLE(LAYOUT_FORMATTING_CONTEXT)
#include "BlockFormattingContext.h"
#include "BlockFormattingState.h"
#include "BlockInvalidation.h"
#include "DisplayBox.h"
#include "InlineFormattingContext.h"
#include "InlineFormattingState.h"
#include "InlineInvalidation.h"
#include "Invalidation.h"
#include "LayoutBox.h"
#include "LayoutContainer.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
namespace Layout {
WTF_MAKE_ISO_ALLOCATED_IMPL(LayoutState);
LayoutState::LayoutState(const Container& initialContainingBlock, const LayoutSize& containerSize)
: m_initialContainingBlock(makeWeakPtr(initialContainingBlock))
{
ASSERT(!initialContainingBlock.parent());
ASSERT(initialContainingBlock.establishesBlockFormattingContext());
auto& displayBox = displayBoxForLayoutBox(initialContainingBlock);
displayBox.setHorizontalMargin({ });
displayBox.setHorizontalComputedMargin({ });
displayBox.setVerticalMargin({ });
displayBox.setBorder({ });
displayBox.setPadding({ });
displayBox.setTopLeft({ });
displayBox.setContentBoxHeight(containerSize.height());
displayBox.setContentBoxWidth(containerSize.width());
m_formattingContextRootListForLayout.add(&initialContainingBlock);
}
void LayoutState::updateLayout()
{
ASSERT(!m_formattingContextRootListForLayout.isEmpty());
for (auto* layoutRoot : m_formattingContextRootListForLayout)
layoutFormattingContextSubtree(*layoutRoot);
m_formattingContextRootListForLayout.clear();
}
void LayoutState::layoutFormattingContextSubtree(const Box& layoutRoot)
{
RELEASE_ASSERT(layoutRoot.establishesFormattingContext());
auto& formattingState = createFormattingStateForFormattingRootIfNeeded(layoutRoot);
auto formattingContext = formattingState.createFormattingContext(layoutRoot);
formattingContext->layout();
formattingContext->layoutOutOfFlowDescendants(layoutRoot);
}
Display::Box& LayoutState::displayBoxForLayoutBox(const Box& layoutBox) const
{
return *m_layoutToDisplayBox.ensure(&layoutBox, [&layoutBox] {
return std::make_unique<Display::Box>(layoutBox.style());
}).iterator->value;
}
void LayoutState::styleChanged(const Box& layoutBox, StyleDiff styleDiff)
{
auto& formattingState = formattingStateForBox(layoutBox);
const Container* invalidationRoot = nullptr;
if (is<BlockFormattingState>(formattingState))
invalidationRoot = BlockInvalidation::invalidate(layoutBox, styleDiff, *this, downcast<BlockFormattingState>(formattingState)).root;
else if (is<InlineFormattingState>(formattingState))
invalidationRoot = InlineInvalidation::invalidate(layoutBox, styleDiff, *this, downcast<InlineFormattingState>(formattingState)).root;
else
ASSERT_NOT_IMPLEMENTED_YET();
ASSERT(invalidationRoot);
m_formattingContextRootListForLayout.addVoid(invalidationRoot);
}
void LayoutState::markNeedsUpdate(const Box&, OptionSet<UpdateType>)
{
}
FormattingState& LayoutState::formattingStateForBox(const Box& layoutBox) const
{
auto& root = layoutBox.formattingContextRoot();
RELEASE_ASSERT(m_formattingStates.contains(&root));
return *m_formattingStates.get(&root);
}
FormattingState& LayoutState::establishedFormattingState(const Box& formattingRoot) const
{
ASSERT(formattingRoot.establishesFormattingContext());
RELEASE_ASSERT(m_formattingStates.contains(&formattingRoot));
return *m_formattingStates.get(&formattingRoot);
}
FormattingState& LayoutState::createFormattingStateForFormattingRootIfNeeded(const Box& formattingRoot)
{
ASSERT(formattingRoot.establishesFormattingContext());
if (formattingRoot.establishesInlineFormattingContext()) {
return *m_formattingStates.ensure(&formattingRoot, [&] {
if (formattingRoot.establishesBlockFormattingContext())
return std::make_unique<InlineFormattingState>(FloatingState::create(*this, formattingRoot), *this);
return std::make_unique<InlineFormattingState>(formattingStateForBox(formattingRoot).floatingState(), *this);
}).iterator->value;
}
if (formattingRoot.establishesBlockFormattingContext()) {
return *m_formattingStates.ensure(&formattingRoot, [&] {
return std::make_unique<BlockFormattingState>(FloatingState::create(*this, formattingRoot), *this);
}).iterator->value;
}
CRASH();
}
}
}
#endif