cssparser.cpp

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    }
    counter->m_listStyle = CSS_VAL_DECIMAL - CSS_VAL_DISC;
    i = args->next();
    if (i) {
        if (i->unit != Value::Operator || i->iValue != ',') goto invalid;
        i = args->next();
        if (i->unit != CSSPrimitiveValue::CSS_IDENT) goto invalid;
        if (i->id < CSS_VAL_DISC || i->id > CSS_VAL__KHTML_CLOSE_QUOTE) goto invalid;
        counter->m_listStyle = i->id - CSS_VAL_DISC;
    }
    return new CSSPrimitiveValueImpl(counter);
invalid:
    delete counter;
    return 0;
}

CSSValueImpl* CSSParser::parseBackgroundColor()
{
    int id = valueList->current()->id;
    if (id == CSS_VAL__KHTML_TEXT || id == CSS_VAL_TRANSPARENT ||
        (id >= CSS_VAL_AQUA && id <= CSS_VAL_WINDOWTEXT) || id == CSS_VAL_MENU ||
        (id >= CSS_VAL_GREY && id < CSS_VAL__KHTML_TEXT && !strict))
       return new CSSPrimitiveValueImpl(id);
    return parseColor();
}

CSSValueImpl* CSSParser::parseBackgroundImage()
{
    if (valueList->current()->id == CSS_VAL_NONE)
        return new CSSImageValueImpl();
    if (valueList->current()->unit == CSSPrimitiveValue::CSS_URI) {
        DOMString uri = khtml::parseURL(domString(valueList->current()->string));
        if (!uri.isEmpty())
            return new CSSImageValueImpl(DOMString(KURL(styleElement->baseURL(), uri.string()).url()),
                                         styleElement);
    }
    return 0;
}

CSSValueImpl* CSSParser::parseBackgroundPositionXY(bool& xFound, bool& yFound)
{
    int id = valueList->current()->id;
    if (id == CSS_VAL_LEFT || id == CSS_VAL_TOP || id == CSS_VAL_RIGHT || id == CSS_VAL_BOTTOM || id == CSS_VAL_CENTER) {
        int percent = 0;
        if (id == CSS_VAL_LEFT || id == CSS_VAL_RIGHT) {
            if (xFound)
                return 0;
            xFound = true;
            if (id == CSS_VAL_RIGHT)
                percent = 100;
        }
        else if (id == CSS_VAL_TOP || id == CSS_VAL_BOTTOM) {
            if (yFound)
                return 0;
            yFound = true;
            if (id == CSS_VAL_BOTTOM)
                percent = 100;
        }
        else if (id == CSS_VAL_CENTER)
            // Center is ambiguous, so we're not sure which position we've found yet, an x or a y.
            percent = 50;
        return new CSSPrimitiveValueImpl(percent, CSSPrimitiveValue::CSS_PERCENTAGE);
    }
    if (validUnit(valueList->current(), FPercent|FLength, strict))
        return new CSSPrimitiveValueImpl(valueList->current()->fValue,
                                         (CSSPrimitiveValue::UnitTypes)valueList->current()->unit);

    return 0;
}

void CSSParser::parseBackgroundPosition(CSSValueImpl*& value1, CSSValueImpl*& value2)
{
    value1 = value2 = 0;
    Value* value = valueList->current();

    // Parse the first value.  We're just making sure that it is one of the valid keywords or a percentage/length.
    bool value1IsX = false, value1IsY = false;
    value1 = parseBackgroundPositionXY(value1IsX, value1IsY);
    if (!value1)
        return;

    // It only takes one value for background-position to be correctly parsed if it was specified in a shorthand (since we
    // can assume that any other values belong to the rest of the shorthand).  If we're not parsing a shorthand, though, the
    // value was explicitly specified for our property.
    value = valueList->next();

    // First check for the comma.  If so, we are finished parsing this value or value pair.
    if (value && value->unit == Value::Operator && value->iValue == ',')
        value = 0;

    bool value2IsX = false, value2IsY = false;
    if (value) {
        value2 = parseBackgroundPositionXY(value2IsX, value2IsY);
        if (value2)
            valueList->next();
        else {
            if (!inParseShortHand) {
                delete value1;
                value1 = 0;
                return;
            }
        }
    }

    if (!value2)
        // Only one value was specified.  If that value was not a keyword, then it sets the x position, and the y position
        // is simply 50%.  This is our default.
        // For keywords, the keyword was either an x-keyword (left/right), a y-keyword (top/bottom), or an ambiguous keyword (center).
        // For left/right/center, the default of 50% in the y is still correct.
        value2 = new CSSPrimitiveValueImpl(50, CSSPrimitiveValue::CSS_PERCENTAGE);

    if (value1IsY || value2IsX) {
        // Swap our two values.
        CSSValueImpl* val = value2;
        value2 = value1;
        value1 = val;
    }
}

bool CSSParser::parseBackgroundProperty(int propId, int& propId1, int& propId2,
                                        CSSValueImpl*& retValue1, CSSValueImpl*& retValue2)
{
    CSSValueListImpl *values = 0, *values2 = 0;
    Value* val;
    CSSValueImpl *value = 0, *value2 = 0;
    bool allowComma = false;

    retValue1 = retValue2 = 0;
    propId1 = propId;
    propId2 = propId;
    if (propId == CSS_PROP_BACKGROUND_POSITION) {
        propId1 = CSS_PROP_BACKGROUND_POSITION_X;
        propId2 = CSS_PROP_BACKGROUND_POSITION_Y;
    }

    while ((val = valueList->current())) {
        CSSValueImpl *currValue = 0, *currValue2 = 0;
        if (allowComma) {
            if (val->unit != Value::Operator || val->iValue != ',')
                goto failed;
            valueList->next();
            allowComma = false;
        }
        else {
            switch (propId) {
                case CSS_PROP_BACKGROUND_ATTACHMENT:
                    if (val->id == CSS_VAL_SCROLL || val->id == CSS_VAL_FIXED) {
                        currValue = new CSSPrimitiveValueImpl(val->id);
                        valueList->next();
                    }
                    break;
                case CSS_PROP_BACKGROUND_COLOR:
                    currValue = parseBackgroundColor();
                    if (currValue)
                        valueList->next();
                    break;
                case CSS_PROP_BACKGROUND_IMAGE:
                    currValue = parseBackgroundImage();
                    if (currValue)
                        valueList->next();
                    break;
                case CSS_PROP_BACKGROUND_POSITION:
                    parseBackgroundPosition(currValue, currValue2);
                    // unlike the other functions, parseBackgroundPosition advances the valueList pointer
                    break;
                case CSS_PROP_BACKGROUND_POSITION_X: {
                    bool xFound = false, yFound = true;
                    currValue = parseBackgroundPositionXY(xFound, yFound);
                    if (currValue)
                        valueList->next();
                    break;
                }
                case CSS_PROP_BACKGROUND_POSITION_Y: {
                    bool xFound = true, yFound = false;
                    currValue = parseBackgroundPositionXY(xFound, yFound);
                    if (currValue)
                        valueList->next();
                    break;
                }
                case CSS_PROP_BACKGROUND_REPEAT:
                    if (val->id >= CSS_VAL_REPEAT && val->id <= CSS_VAL_NO_REPEAT) {
                        currValue = new CSSPrimitiveValueImpl(val->id);
                        valueList->next();
                    }
                    break;
            }

            if (!currValue)
                goto failed;

            if (value && !values) {
                values = new CSSValueListImpl();
                values->append(value);
                value = 0;
            }

            if (value2 && !values2) {
                values2 = new CSSValueListImpl();
                values2->append(value2);
                value2 = 0;
            }

            if (values)
                values->append(currValue);
            else
                value = currValue;
            if (currValue2) {
                if (values2)
                    values2->append(currValue2);
                else
                    value2 = currValue2;
            }
            allowComma = true;
        }

        // When parsing the 'background' shorthand property, we let it handle building up the lists for all
        // properties.
        if (inParseShortHand)
            break;
    }

    if (values && values->length()) {
        retValue1 = values;
        if (values2 && values2->length())
            retValue2 = values2;
        return true;
    }
    if (value) {
        retValue1 = value;
        retValue2 = value2;
        return true;
    }

failed:
    delete values; delete values2;
    delete value; delete value2;
    return false;
}

bool CSSParser::parseShape( int propId, bool important )
{
    Value *value = valueList->current();
    ValueList *args = value->function->args;
    QString fname = qString( value->function->name ).lower();
    //qDebug( "parseShape: fname: %d", fname.latin1() );
    if ( fname != "rect(" || !args )
        return false;

    // rect( t, r, b, l ) || rect( t r b l )
    if ( args->numValues != 4 && args->numValues != 7 )
        return false;
    RectImpl *rect = new RectImpl();
    bool valid = true;
    int i = 0;
    Value *a = args->current();
    while ( a ) {
        valid = validUnit( a, FLength, strict );
        if ( !valid )
            break;
        CSSPrimitiveValueImpl *length =
            new CSSPrimitiveValueImpl( a->fValue, (CSSPrimitiveValue::UnitTypes) a->unit );
        if ( i == 0 )
            rect->setTop( length );
        else if ( i == 1 )
            rect->setRight( length );
        else if ( i == 2 )
            rect->setBottom( length );
        else
            rect->setLeft( length );
        a = args->next();
        if ( a && args->numValues == 7 ) {
            if ( a->unit == Value::Operator && a->iValue == ',' ) {
                a = args->next();
            } else {
                valid = false;
                break;
            }
        }
        i++;
    }
    if ( valid ) {
        addProperty( propId, new CSSPrimitiveValueImpl( rect ), important );
        valueList->next();
        return true;
    }
    delete rect;
    return false;
}

// [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]? 'font-family'
bool CSSParser::parseFont( bool important )
{
//     kdDebug(6080) << "parsing font property current=" << valueList->currentValue << endl;
    bool valid = true;
    Value *value = valueList->current();
    FontValueImpl *font = new FontValueImpl;
    // optional font-style, font-variant and font-weight
    while ( value ) {
//         kdDebug( 6080 ) << "got value " << value->id << " / " << (value->unit == CSSPrimitiveValue::CSS_STRING ||
        //                                    value->unit == CSSPrimitiveValue::CSS_IDENT ? qString( value->string ) : QString::null )
//                         << endl;
        int id = value->id;
        if ( id ) {
            if ( id == CSS_VAL_NORMAL ) {
                // do nothing, it's the initial value for all three
            }
            /*
              else if ( id == CSS_VAL_INHERIT ) {
              // set all non set ones to inherit
              // This is not that simple as the inherit could also apply to the following font-size.
              // very ahrd to tell without looking ahead.
              inherit = true;
                } */
            else if ( id == CSS_VAL_ITALIC || id == CSS_VAL_OBLIQUE ) {
                if ( font->style )
                    goto invalid;
                font->style = new CSSPrimitiveValueImpl( id );
            } else if ( id == CSS_VAL_SMALL_CAPS ) {
                if ( font->variant )
                    goto invalid;
                font->variant = new CSSPrimitiveValueImpl( id );
            } else if ( id >= CSS_VAL_BOLD && id <= CSS_VAL_LIGHTER ) {
                if ( font->weight )
                    goto invalid;
                font->weight = new CSSPrimitiveValueImpl( id );
            } else {
                valid = false;
            }
        } else if ( !font->weight && validUnit( value, FInteger|FNonNeg, true ) ) {
            int weight = (int)value->fValue;
            int val = 0;
            if ( weight == 100 )
                val = CSS_VAL_100;
            else if ( weight == 200 )
                val = CSS_VAL_200;
            else if ( weight == 300 )
                val = CSS_VAL_300;
            else if ( weight == 400 )
                val = CSS_VAL_400;
            else if ( weight == 500 )
                val = CSS_VAL_500;
            else if ( weight == 600 )
                val = CSS_VAL_600;
            else if ( weight == 700 )
                val = CSS_VAL_700;
            else if ( weight