Exemplo n.º 1
0
JSValue* JSCharacterData::getValueProperty(ExecState* exec, int token) const
{
    switch (token) {
    case DataAttrNum: {
        CharacterData* imp = static_cast<CharacterData*>(impl());
        return jsString(exec, imp->data());
    }
    case LengthAttrNum: {
        CharacterData* imp = static_cast<CharacterData*>(impl());
        return jsNumber(exec, imp->length());
    }
    case ConstructorAttrNum:
        return getConstructor(exec);
    }
    return 0;
}
void VisibleSelection::setStartAndEndFromBaseAndExtentRespectingGranularity(TextGranularity granularity)
{
    if (m_baseIsFirst) {
        m_start = m_base;
        m_end = m_extent;
    } else {
        m_start = m_extent;
        m_end = m_base;
    }

    switch (granularity) {
        case CharacterGranularity:
            // Don't do any expansion.
            break;
        case WordGranularity: {
            // General case: Select the word the caret is positioned inside of, or at the start of (RightWordIfOnBoundary).
            // Edge case: If the caret is after the last word in a soft-wrapped line or the last word in
            // the document, select that last word (LeftWordIfOnBoundary).
            // Edge case: If the caret is after the last word in a paragraph, select from the the end of the
            // last word to the line break (also RightWordIfOnBoundary);
            VisiblePosition start = VisiblePosition(m_start, m_affinity);
            VisiblePosition originalEnd(m_end, m_affinity);
            EWordSide side = RightWordIfOnBoundary;
            if (isEndOfDocument(start) || (isEndOfLine(start) && !isStartOfLine(start) && !isEndOfParagraph(start)))
                side = LeftWordIfOnBoundary;
            m_start = startOfWord(start, side).deepEquivalent();
            side = RightWordIfOnBoundary;
            if (isEndOfDocument(originalEnd) || (isEndOfLine(originalEnd) && !isStartOfLine(originalEnd) && !isEndOfParagraph(originalEnd)))
                side = LeftWordIfOnBoundary;
                
            VisiblePosition wordEnd(endOfWord(originalEnd, side));
            VisiblePosition end(wordEnd);
            
            if (isEndOfParagraph(originalEnd) && !isEmptyTableCell(m_start.deprecatedNode())) {
                // Select the paragraph break (the space from the end of a paragraph to the start of 
                // the next one) to match TextEdit.
                end = wordEnd.next();
                
                if (Node* table = isFirstPositionAfterTable(end)) {
                    // The paragraph break after the last paragraph in the last cell of a block table ends
                    // at the start of the paragraph after the table.
                    if (isBlock(table))
                        end = end.next(CannotCrossEditingBoundary);
                    else
                        end = wordEnd;
                }
                
                if (end.isNull())
                    end = wordEnd;
                    
            }
                
            m_end = end.deepEquivalent();
		
            //added this to select only letters for dictionary viewing
            if( m_selectOnlyLetters && m_start.anchorNode()->isTextNode() && m_end.anchorNode()->isTextNode() ) {

                CharacterData* startText = static_cast<CharacterData*>(m_start.anchorNode());
                String startStr = startText->data();
                CharacterData* endText = static_cast<CharacterData*>(m_end.anchorNode());
                String endStr = endText->data();

                int n1 = m_start.offsetInContainerNode();
                int n2 = m_end.offsetInContainerNode() - 1;

                //unhandled corner case: at beginning of sentence, m_start may refer
                //to the Node of the last sentence, this causes the space at the beginning
                //of a sentence to be part of the selection. Assigning m_end to m_start and
                //adjusting the offset does not fix this. 		

                QChar c1 = startStr[n1];
                QChar c2 = endStr[n2];

                while(!c1.isLetter() && n1 <= n2) {
                    c1 = startStr[++n1];
                    m_start = m_start.next(Character);
                }

                while(!c2.isLetter() && n2 >= n1) {
                    c2 = endStr[--n2];
                    m_end = m_end.previous(Character);
                }
            }
            break;
        }
        case SentenceGranularity: {
            m_start = startOfSentence(VisiblePosition(m_start, m_affinity)).deepEquivalent();
            m_end = endOfSentence(VisiblePosition(m_end, m_affinity)).deepEquivalent();
            break;
        }
        case LineGranularity: {
            m_start = startOfLine(VisiblePosition(m_start, m_affinity)).deepEquivalent();
            VisiblePosition end = endOfLine(VisiblePosition(m_end, m_affinity));
            // If the end of this line is at the end of a paragraph, include the space 
            // after the end of the line in the selection.
            if (isEndOfParagraph(end)) {
                VisiblePosition next = end.next();
                if (next.isNotNull())
                    end = next;
            }
            m_end = end.deepEquivalent();
            break;
        }
        case LineBoundary:
            m_start = startOfLine(VisiblePosition(m_start, m_affinity)).deepEquivalent();
            m_end = endOfLine(VisiblePosition(m_end, m_affinity)).deepEquivalent();
            break;
        case ParagraphGranularity: {
            VisiblePosition pos(m_start, m_affinity);
            if (isStartOfLine(pos) && isEndOfDocument(pos))
                pos = pos.previous();
            m_start = startOfParagraph(pos).deepEquivalent();
            VisiblePosition visibleParagraphEnd = endOfParagraph(VisiblePosition(m_end, m_affinity));
            
            // Include the "paragraph break" (the space from the end of this paragraph to the start
            // of the next one) in the selection.
            VisiblePosition end(visibleParagraphEnd.next());
             
            if (Node* table = isFirstPositionAfterTable(end)) {
                // The paragraph break after the last paragraph in the last cell of a block table ends
                // at the start of the paragraph after the table, not at the position just after the table.
                if (isBlock(table))
                    end = end.next(CannotCrossEditingBoundary);
                // There is no parargraph break after the last paragraph in the last cell of an inline table.
                else
                    end = visibleParagraphEnd;
            }
             
            if (end.isNull())
                end = visibleParagraphEnd;
                
            m_end = end.deepEquivalent();
            break;
        }
        case DocumentBoundary:
            m_start = startOfDocument(VisiblePosition(m_start, m_affinity)).deepEquivalent();
            m_end = endOfDocument(VisiblePosition(m_end, m_affinity)).deepEquivalent();
            break;
        case ParagraphBoundary:
            m_start = startOfParagraph(VisiblePosition(m_start, m_affinity)).deepEquivalent();
            m_end = endOfParagraph(VisiblePosition(m_end, m_affinity)).deepEquivalent();
            break;
        case SentenceBoundary:
            m_start = startOfSentence(VisiblePosition(m_start, m_affinity)).deepEquivalent();
            m_end = endOfSentence(VisiblePosition(m_end, m_affinity)).deepEquivalent();
            break;
        case WebKitVisualWordGranularity:
            break;
    }
    
    // Make sure we do not have a dangling start or end.
    if (m_start.isNull())
        m_start = m_end;
    if (m_end.isNull())
        m_end = m_start;
}