#pragma once
#include "EditingBoundary.h"
#include "Position.h"
namespace WebCore {
class Range;
struct SimpleRange;
#define VP_DEFAULT_AFFINITY DOWNSTREAM
#define VP_UPSTREAM_IF_POSSIBLE UPSTREAM
class VisiblePosition {
public:
VisiblePosition() : m_affinity(VP_DEFAULT_AFFINITY) { }
WEBCORE_EXPORT VisiblePosition(const Position&, EAffinity = VP_DEFAULT_AFFINITY);
void clear() { m_deepPosition.clear(); }
bool isNull() const { return m_deepPosition.isNull(); }
bool isNotNull() const { return m_deepPosition.isNotNull(); }
bool isOrphan() const { return m_deepPosition.isOrphan(); }
Position deepEquivalent() const { return m_deepPosition; }
EAffinity affinity() const { ASSERT(m_affinity == UPSTREAM || m_affinity == DOWNSTREAM); return m_affinity; }
void setAffinity(EAffinity affinity) { m_affinity = affinity; }
WEBCORE_EXPORT VisiblePosition next(EditingBoundaryCrossingRule = CanCrossEditingBoundary, bool* reachedBoundary = nullptr) const;
WEBCORE_EXPORT VisiblePosition previous(EditingBoundaryCrossingRule = CanCrossEditingBoundary, bool* reachedBoundary = nullptr) const;
VisiblePosition honorEditingBoundaryAtOrBefore(const VisiblePosition&, bool* reachedBoundary = nullptr) const;
VisiblePosition honorEditingBoundaryAtOrAfter(const VisiblePosition&, bool* reachedBoundary = nullptr) const;
WEBCORE_EXPORT VisiblePosition left(bool stayInEditableContent = false, bool* reachedBoundary = nullptr) const;
WEBCORE_EXPORT VisiblePosition right(bool stayInEditableContent = false, bool* reachedBoundary = nullptr) const;
WEBCORE_EXPORT UChar32 characterAfter() const;
UChar32 characterBefore() const { return previous().characterAfter(); }
Element* rootEditableElement() const { return m_deepPosition.isNotNull() ? m_deepPosition.deprecatedNode()->rootEditableElement() : 0; }
void getInlineBoxAndOffset(InlineBox*&, int& caretOffset) const;
void getInlineBoxAndOffset(TextDirection primaryDirection, InlineBox*&, int& caretOffset) const;
WEBCORE_EXPORT LayoutRect localCaretRect(RenderObject*&) const;
WEBCORE_EXPORT IntRect absoluteCaretBounds(bool* insideFixed = nullptr) const;
WEBCORE_EXPORT int lineDirectionPointForBlockDirectionNavigation() const;
WEBCORE_EXPORT FloatRect absoluteSelectionBoundsForLine() const;
bool equals(const VisiblePosition&) const;
#if ENABLE(TREE_DEBUGGING)
void debugPosition(const char* msg = "") const;
void formatForDebugger(char* buffer, unsigned length) const;
void showTreeForThis() const;
#endif
private:
void init(const Position&, EAffinity);
Position canonicalPosition(const Position&);
Position leftVisuallyDistinctCandidate() const;
Position rightVisuallyDistinctCandidate() const;
Position m_deepPosition;
EAffinity m_affinity;
};
bool operator==(const VisiblePosition&, const VisiblePosition&);
bool operator!=(const VisiblePosition&, const VisiblePosition&);
bool operator<(const VisiblePosition&, const VisiblePosition&);
bool operator>(const VisiblePosition&, const VisiblePosition&);
bool operator<=(const VisiblePosition&, const VisiblePosition&);
bool operator>=(const VisiblePosition&, const VisiblePosition&);
WEBCORE_EXPORT Optional<BoundaryPoint> makeBoundaryPoint(const VisiblePosition&);
WEBCORE_EXPORT Element* enclosingBlockFlowElement(const VisiblePosition&);
bool isFirstVisiblePositionInNode(const VisiblePosition&, const Node*);
bool isLastVisiblePositionInNode(const VisiblePosition&, const Node*);
bool areVisiblePositionsInSameTreeScope(const VisiblePosition&, const VisiblePosition&);
WTF::TextStream& operator<<(WTF::TextStream&, EAffinity);
WEBCORE_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const VisiblePosition&);
struct VisiblePositionRange {
VisiblePosition start;
VisiblePosition end;
bool isNull() const { return start.isNull() || end.isNull(); }
};
WEBCORE_EXPORT Optional<SimpleRange> makeSimpleRange(const VisiblePositionRange&);
inline bool operator==(const VisiblePosition& a, const VisiblePosition& b)
{
return a.deepEquivalent() == b.deepEquivalent();
}
inline bool operator!=(const VisiblePosition& a, const VisiblePosition& b)
{
return !(a == b);
}
inline bool operator<(const VisiblePosition& a, const VisiblePosition& b)
{
return a.deepEquivalent() < b.deepEquivalent();
}
inline bool operator>(const VisiblePosition& a, const VisiblePosition& b)
{
return a.deepEquivalent() > b.deepEquivalent();
}
inline bool operator<=(const VisiblePosition& a, const VisiblePosition& b)
{
return a.deepEquivalent() <= b.deepEquivalent();
}
inline bool operator>=(const VisiblePosition& a, const VisiblePosition& b)
{
return a.deepEquivalent() >= b.deepEquivalent();
}
inline void VisiblePosition::getInlineBoxAndOffset(InlineBox*& inlineBox, int& caretOffset) const
{
m_deepPosition.getInlineBoxAndOffset(m_affinity, inlineBox, caretOffset);
}
inline void VisiblePosition::getInlineBoxAndOffset(TextDirection primaryDirection, InlineBox*& inlineBox, int& caretOffset) const
{
m_deepPosition.getInlineBoxAndOffset(m_affinity, primaryDirection, inlineBox, caretOffset);
}
}
#if ENABLE(TREE_DEBUGGING)
void showTree(const WebCore::VisiblePosition*);
void showTree(const WebCore::VisiblePosition&);
#endif