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/*
* This file is part of the DOM implementation for WebCore.
*
* Copyright (C) 2006 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef DocumentMarker_h
#define DocumentMarker_h
#include <wtf/Forward.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class DocumentMarkerDetails;
// A range of a node within a document that is "marked", such as the range of a misspelled word.
// It optionally includes a description that could be displayed in the user interface.
// It also optionally includes a flag specifying whether the match is active, which is ignored
// for all types other than type TextMatch.
class DocumentMarker {
public:
enum MarkerType {
Spelling = 1 << 0,
Grammar = 1 << 1,
TextMatch = 1 << 2,
// Text has been modified by spell correction, reversion of spell correction or other type of substitution.
// On some platforms, this prevents the text from being autocorrected again. On post Snow Leopard Mac OS X,
// if a Replacement marker contains non-empty description, a reversion UI will be shown.
Replacement = 1 << 3,
// Renderer needs to add underline indicating that the text has been modified by spell
// correction. Text with Replacement marker doesn't necessarily has CorrectionIndicator
// marker. For instance, after some text has been corrected, it will have both Replacement
// and CorrectionIndicator. However, if user further modifies such text, we would remove
// CorrectionIndicator marker, but retain Replacement marker.
CorrectionIndicator = 1 << 4,
// Correction suggestion has been offered, but got rejected by user.
RejectedCorrection = 1 << 5,
// Text has been modified by autocorrection. The description of this marker is the original text before autocorrection.
Autocorrected = 1 << 6,
// On some platforms, this prevents the text from being spellchecked again.
SpellCheckingExemption = 1 << 7,
// This marker indicates user has deleted an autocorrection starting at the end of the
// range that bears this marker. In some platforms, if the user later inserts the same original
// word again at this position, it will not be autocorrected again. The description of this
// marker is the original word before autocorrection was applied.
DeletedAutocorrection = 1 << 8,
// This marker indicates that the range of text spanned by the marker is entered by voice dictation,
// and it has alternative text.
DictationAlternatives = 1 << 9
};
class MarkerTypes {
public:
// The constructor is intentionally implicit to allow conversion from the bit-wise sum of above types
MarkerTypes(unsigned mask) : m_mask(mask) { }
bool contains(MarkerType type) const { return m_mask & type; }
bool intersects(const MarkerTypes& types) const { return (m_mask & types.m_mask); }
bool operator==(const MarkerTypes& other) const { return m_mask == other.m_mask; }
void add(const MarkerTypes& types) { m_mask |= types.m_mask; }
void remove(const MarkerTypes& types) { m_mask &= ~types.m_mask; }
private:
unsigned m_mask;
};
class AllMarkers : public MarkerTypes {
public:
AllMarkers()
: MarkerTypes(Spelling | Grammar | TextMatch | Replacement | CorrectionIndicator | RejectedCorrection | Autocorrected | SpellCheckingExemption | DeletedAutocorrection | DictationAlternatives)
{
}
};
DocumentMarker();
DocumentMarker(MarkerType, unsigned startOffset, unsigned endOffset);
DocumentMarker(MarkerType, unsigned startOffset, unsigned endOffset, const String& description);
DocumentMarker(unsigned startOffset, unsigned endOffset, bool activeMatch);
DocumentMarker(MarkerType, unsigned startOffset, unsigned endOffset, PassRefPtr<DocumentMarkerDetails>);
MarkerType type() const { return m_type; }
unsigned startOffset() const { return m_startOffset; }
unsigned endOffset() const { return m_endOffset; }
const String& description() const;
bool activeMatch() const;
DocumentMarkerDetails* details() const;
void setActiveMatch(bool);
void clearDetails() { m_details.clear(); }
// Offset modifications are done by DocumentMarkerController.
// Other classes should not call following setters.
void setStartOffset(unsigned offset) { m_startOffset = offset; }
void setEndOffset(unsigned offset) { m_endOffset = offset; }
void shiftOffsets(int delta);
bool operator==(const DocumentMarker& o) const
{
return type() == o.type() && startOffset() == o.startOffset() && endOffset() == o.endOffset();
}
bool operator!=(const DocumentMarker& o) const
{
return !(*this == o);
}
private:
MarkerType m_type;
unsigned m_startOffset;
unsigned m_endOffset;
RefPtr<DocumentMarkerDetails> m_details;
};
inline DocumentMarkerDetails* DocumentMarker::details() const
{
return m_details.get();
}
class DocumentMarkerDetails : public RefCounted<DocumentMarkerDetails>
{
public:
DocumentMarkerDetails() { }
virtual ~DocumentMarkerDetails();
virtual bool isDescription() const { return false; }
virtual bool isTextMatch() const { return false; }
};
} // namespace WebCore
#endif // DocumentMarker_h
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