FlowThreadController.h [plain text]
#ifndef FlowThreadController_h
#define FlowThreadController_h
#include "RenderView.h"
#include <memory>
#include <wtf/ListHashSet.h>
namespace WebCore {
class RenderFlowThread;
class RenderLayer;
class RenderNamedFlowThread;
typedef ListHashSet<RenderNamedFlowThread*> RenderNamedFlowThreadList;
class FlowThreadController {
WTF_MAKE_FAST_ALLOCATED;
public:
explicit FlowThreadController(RenderView*);
~FlowThreadController();
RenderFlowThread* currentRenderFlowThread() const { return m_currentRenderFlowThread; }
void setCurrentRenderFlowThread(RenderFlowThread* flowThread) { m_currentRenderFlowThread = flowThread; }
bool isRenderNamedFlowThreadOrderDirty() const { return m_isRenderNamedFlowThreadOrderDirty; }
void setIsRenderNamedFlowThreadOrderDirty(bool dirty)
{
m_isRenderNamedFlowThreadOrderDirty = dirty;
if (dirty)
m_view->setNeedsLayout();
}
RenderNamedFlowThread& ensureRenderFlowThreadWithName(const AtomicString&);
const RenderNamedFlowThreadList* renderNamedFlowThreadList() const { return m_renderNamedFlowThreadList.get(); }
bool hasRenderNamedFlowThreads() const { return m_renderNamedFlowThreadList && !m_renderNamedFlowThreadList->isEmpty(); }
void layoutRenderNamedFlowThreads();
void styleDidChange();
void registerNamedFlowContentElement(Element&, RenderNamedFlowThread&);
void unregisterNamedFlowContentElement(Element&);
bool hasFlowThreadsWithAutoLogicalHeightRegions() const { return m_flowThreadsWithAutoLogicalHeightRegions; }
void incrementFlowThreadsWithAutoLogicalHeightRegions() { ++m_flowThreadsWithAutoLogicalHeightRegions; }
void decrementFlowThreadsWithAutoLogicalHeightRegions() { ASSERT(m_flowThreadsWithAutoLogicalHeightRegions > 0); --m_flowThreadsWithAutoLogicalHeightRegions; }
bool updateFlowThreadsNeedingLayout();
bool updateFlowThreadsNeedingTwoStepLayout();
void updateFlowThreadsIntoConstrainedPhase();
void updateFlowThreadsIntoOverflowPhase();
void updateFlowThreadsIntoMeasureContentPhase();
void updateFlowThreadsIntoFinalPhase();
void updateNamedFlowsLayerListsIfNeeded();
void collectFixedPositionedLayers(Vector<RenderLayer*>& fixedPosLayers) const;
void updateFlowThreadsLayerToRegionMappingsIfNeeded();
#ifndef NDEBUG
bool isAutoLogicalHeightRegionsCountConsistent() const;
#endif
protected:
void updateFlowThreadsChainIfNecessary();
void resetFlowThreadsWithAutoHeightRegions();
private:
RenderView* m_view;
RenderFlowThread* m_currentRenderFlowThread;
bool m_isRenderNamedFlowThreadOrderDirty;
unsigned m_flowThreadsWithAutoLogicalHeightRegions;
std::unique_ptr<RenderNamedFlowThreadList> m_renderNamedFlowThreadList;
HashMap<const Element*, RenderNamedFlowThread*> m_mapNamedFlowContentElement;
};
}
#endif