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/*
* Copyright (C) 2004 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef visible_units_h
#define visible_units_h
#include "EditingBoundary.h"
#include "Position.h"
#include "TextAffinity.h"
namespace WebCore {
class RootInlineBox;
class VisiblePosition;
enum EWordSide { RightWordIfOnBoundary = false, LeftWordIfOnBoundary = true };
// words
VisiblePosition startOfWord(const VisiblePosition &, EWordSide = RightWordIfOnBoundary);
VisiblePosition endOfWord(const VisiblePosition &, EWordSide = RightWordIfOnBoundary);
VisiblePosition previousWordPosition(const VisiblePosition &);
VisiblePosition nextWordPosition(const VisiblePosition &);
VisiblePosition rightWordPosition(const VisiblePosition&);
VisiblePosition leftWordPosition(const VisiblePosition&);
// sentences
VisiblePosition startOfSentence(const VisiblePosition &);
VisiblePosition endOfSentence(const VisiblePosition &);
VisiblePosition previousSentencePosition(const VisiblePosition &);
VisiblePosition nextSentencePosition(const VisiblePosition &);
// lines
VisiblePosition startOfLine(const VisiblePosition &);
VisiblePosition endOfLine(const VisiblePosition &);
VisiblePosition previousLinePosition(const VisiblePosition &, int x);
VisiblePosition nextLinePosition(const VisiblePosition &, int x);
bool inSameLine(const VisiblePosition &, const VisiblePosition &);
bool inSameLogicalLine(const VisiblePosition &, const VisiblePosition &);
bool isStartOfLine(const VisiblePosition &);
bool isEndOfLine(const VisiblePosition &);
VisiblePosition logicalStartOfLine(const VisiblePosition &);
VisiblePosition logicalEndOfLine(const VisiblePosition &);
VisiblePosition leftBoundaryOfLine(const VisiblePosition&, TextDirection);
VisiblePosition rightBoundaryOfLine(const VisiblePosition&, TextDirection);
// paragraphs (perhaps a misnomer, can be divided by line break elements)
VisiblePosition startOfParagraph(const VisiblePosition&, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
VisiblePosition endOfParagraph(const VisiblePosition&, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
VisiblePosition startOfNextParagraph(const VisiblePosition&);
VisiblePosition previousParagraphPosition(const VisiblePosition &, int x);
VisiblePosition nextParagraphPosition(const VisiblePosition &, int x);
bool isStartOfParagraph(const VisiblePosition &, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
bool isEndOfParagraph(const VisiblePosition &, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
bool inSameParagraph(const VisiblePosition &, const VisiblePosition &, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
// blocks (true paragraphs; line break elements don't break blocks)
VisiblePosition startOfBlock(const VisiblePosition &, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
VisiblePosition endOfBlock(const VisiblePosition &, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
bool inSameBlock(const VisiblePosition &, const VisiblePosition &);
bool isStartOfBlock(const VisiblePosition &);
bool isEndOfBlock(const VisiblePosition &);
// document
VisiblePosition startOfDocument(const Node*);
VisiblePosition endOfDocument(const Node*);
VisiblePosition startOfDocument(const VisiblePosition &);
VisiblePosition endOfDocument(const VisiblePosition &);
bool inSameDocument(const VisiblePosition &, const VisiblePosition &);
bool isStartOfDocument(const VisiblePosition &);
bool isEndOfDocument(const VisiblePosition &);
// editable content
VisiblePosition startOfEditableContent(const VisiblePosition&);
VisiblePosition endOfEditableContent(const VisiblePosition&);
} // namespace WebCore
#endif // VisiblePosition_h
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