1 /* 2 * Copyright (C) 2004 Apple Computer, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef visible_units_h 27 #define visible_units_h 28 29 #include "EditingBoundary.h" 30 #include "Position.h" 31 #include "TextAffinity.h" 32 33 namespace WebCore { 34 35 class RootInlineBox; 36 class VisiblePosition; 37 38 enum EWordSide { RightWordIfOnBoundary = false, LeftWordIfOnBoundary = true }; 39 40 // words 41 VisiblePosition startOfWord(const VisiblePosition &, EWordSide = RightWordIfOnBoundary); 42 VisiblePosition endOfWord(const VisiblePosition &, EWordSide = RightWordIfOnBoundary); 43 VisiblePosition previousWordPosition(const VisiblePosition &); 44 VisiblePosition nextWordPosition(const VisiblePosition &); 45 VisiblePosition rightWordPosition(const VisiblePosition&); 46 VisiblePosition leftWordPosition(const VisiblePosition&); 47 48 // sentences 49 VisiblePosition startOfSentence(const VisiblePosition &); 50 VisiblePosition endOfSentence(const VisiblePosition &); 51 VisiblePosition previousSentencePosition(const VisiblePosition &); 52 VisiblePosition nextSentencePosition(const VisiblePosition &); 53 54 // lines 55 VisiblePosition startOfLine(const VisiblePosition &); 56 VisiblePosition endOfLine(const VisiblePosition &); 57 VisiblePosition previousLinePosition(const VisiblePosition &, int x); 58 VisiblePosition nextLinePosition(const VisiblePosition &, int x); 59 bool inSameLine(const VisiblePosition &, const VisiblePosition &); 60 bool inSameLogicalLine(const VisiblePosition &, const VisiblePosition &); 61 bool isStartOfLine(const VisiblePosition &); 62 bool isEndOfLine(const VisiblePosition &); 63 VisiblePosition logicalStartOfLine(const VisiblePosition &); 64 VisiblePosition logicalEndOfLine(const VisiblePosition &); 65 VisiblePosition leftBoundaryOfLine(const VisiblePosition&, TextDirection); 66 VisiblePosition rightBoundaryOfLine(const VisiblePosition&, TextDirection); 67 68 // paragraphs (perhaps a misnomer, can be divided by line break elements) 69 VisiblePosition startOfParagraph(const VisiblePosition&, EditingBoundaryCrossingRule = CannotCrossEditingBoundary); 70 VisiblePosition endOfParagraph(const VisiblePosition&, EditingBoundaryCrossingRule = CannotCrossEditingBoundary); 71 VisiblePosition startOfNextParagraph(const VisiblePosition&); 72 VisiblePosition previousParagraphPosition(const VisiblePosition &, int x); 73 VisiblePosition nextParagraphPosition(const VisiblePosition &, int x); 74 bool isStartOfParagraph(const VisiblePosition &, EditingBoundaryCrossingRule = CannotCrossEditingBoundary); 75 bool isEndOfParagraph(const VisiblePosition &, EditingBoundaryCrossingRule = CannotCrossEditingBoundary); 76 bool inSameParagraph(const VisiblePosition &, const VisiblePosition &, EditingBoundaryCrossingRule = CannotCrossEditingBoundary); 77 78 // blocks (true paragraphs; line break elements don't break blocks) 79 VisiblePosition startOfBlock(const VisiblePosition &, EditingBoundaryCrossingRule = CannotCrossEditingBoundary); 80 VisiblePosition endOfBlock(const VisiblePosition &, EditingBoundaryCrossingRule = CannotCrossEditingBoundary); 81 bool inSameBlock(const VisiblePosition &, const VisiblePosition &); 82 bool isStartOfBlock(const VisiblePosition &); 83 bool isEndOfBlock(const VisiblePosition &); 84 85 // document 86 VisiblePosition startOfDocument(const Node*); 87 VisiblePosition endOfDocument(const Node*); 88 VisiblePosition startOfDocument(const VisiblePosition &); 89 VisiblePosition endOfDocument(const VisiblePosition &); 90 bool inSameDocument(const VisiblePosition &, const VisiblePosition &); 91 bool isStartOfDocument(const VisiblePosition &); 92 bool isEndOfDocument(const VisiblePosition &); 93 94 // editable content 95 VisiblePosition startOfEditableContent(const VisiblePosition&); 96 VisiblePosition endOfEditableContent(const VisiblePosition&); 97 98 } // namespace WebCore 99 100 #endif // VisiblePosition_h 101