VisibleSelection.h [plain text]
#ifndef VisibleSelection_h
#define VisibleSelection_h
#include "TextGranularity.h"
#include "VisiblePosition.h"
namespace WebCore {
class Position;
const EAffinity SEL_DEFAULT_AFFINITY = DOWNSTREAM;
class VisibleSelection {
public:
enum SelectionType { NoSelection, CaretSelection, RangeSelection };
VisibleSelection();
VisibleSelection(const Position&, EAffinity);
VisibleSelection(const Position&, const Position&, EAffinity = SEL_DEFAULT_AFFINITY);
VisibleSelection(const Range*, EAffinity = SEL_DEFAULT_AFFINITY);
VisibleSelection(const VisiblePosition&);
VisibleSelection(const VisiblePosition&, const VisiblePosition&);
static VisibleSelection selectionFromContentsOfNode(Node*);
SelectionType selectionType() const { return m_selectionType; }
void setAffinity(EAffinity affinity) { m_affinity = affinity; }
EAffinity affinity() const { return m_affinity; }
void setBase(const Position&);
void setBase(const VisiblePosition&);
void setExtent(const Position&);
void setExtent(const VisiblePosition&);
Position base() const { return m_base; }
Position extent() const { return m_extent; }
Position start() const { return m_start; }
Position end() const { return m_end; }
VisiblePosition visibleStart() const { return VisiblePosition(m_start, isRange() ? DOWNSTREAM : affinity()); }
VisiblePosition visibleEnd() const { return VisiblePosition(m_end, isRange() ? UPSTREAM : affinity()); }
bool isNone() const { return selectionType() == NoSelection; }
bool isCaret() const { return selectionType() == CaretSelection; }
bool isRange() const { return selectionType() == RangeSelection; }
bool isCaretOrRange() const { return selectionType() != NoSelection; }
bool isBaseFirst() const { return m_baseIsFirst; }
bool isAll(StayInEditableContent) const;
void appendTrailingWhitespace();
bool expandUsingGranularity(TextGranularity granularity);
PassRefPtr<Range> firstRange() const;
PassRefPtr<Range> toNormalizedRange() const;
Element* rootEditableElement() const;
bool isContentEditable() const;
bool isContentRichlyEditable() const;
Node* shadowTreeRootNode() const;
void debugPosition() const;
#ifndef NDEBUG
void formatForDebugger(char* buffer, unsigned length) const;
void showTreeForThis() const;
#endif
void setWithoutValidation(const Position&, const Position&);
private:
void validate(TextGranularity = CharacterGranularity);
void setBaseAndExtentToDeepEquivalents();
void setStartAndEndFromBaseAndExtentRespectingGranularity(TextGranularity);
void adjustSelectionToAvoidCrossingEditingBoundaries();
void updateSelectionType();
Position m_base; Position m_extent; Position m_start; Position m_end;
EAffinity m_affinity;
SelectionType m_selectionType; bool m_baseIsFirst; };
inline bool operator==(const VisibleSelection& a, const VisibleSelection& b)
{
return a.start() == b.start() && a.end() == b.end() && a.affinity() == b.affinity() && a.isBaseFirst() == b.isBaseFirst();
}
inline bool operator!=(const VisibleSelection& a, const VisibleSelection& b)
{
return !(a == b);
}
}
#ifndef NDEBUG
void showTree(const WebCore::VisibleSelection&);
void showTree(const WebCore::VisibleSelection*);
#endif
#endif // VisibleSelection_h