示例#1
0
String StylePropertySerializer::get4Values(const StylePropertyShorthand& shorthand) const
{
    // Assume the properties are in the usual order top, right, bottom, left.
    int topValueIndex = m_propertySet.findPropertyIndex(shorthand.properties()[0]);
    int rightValueIndex = m_propertySet.findPropertyIndex(shorthand.properties()[1]);
    int bottomValueIndex = m_propertySet.findPropertyIndex(shorthand.properties()[2]);
    int leftValueIndex = m_propertySet.findPropertyIndex(shorthand.properties()[3]);

    if (topValueIndex == -1 || rightValueIndex == -1 || bottomValueIndex == -1 || leftValueIndex == -1)
        return String();

    StylePropertySet::PropertyReference top = m_propertySet.propertyAt(topValueIndex);
    StylePropertySet::PropertyReference right = m_propertySet.propertyAt(rightValueIndex);
    StylePropertySet::PropertyReference bottom = m_propertySet.propertyAt(bottomValueIndex);
    StylePropertySet::PropertyReference left = m_propertySet.propertyAt(leftValueIndex);

    // All 4 properties must be specified.
    if (!top.value() || !right.value() || !bottom.value() || !left.value())
        return String();

    if (top.isInherited() && right.isInherited() && bottom.isInherited() && left.isInherited())
        return getValueName(CSSValueInherit);

    if (top.value()->isInitialValue() || right.value()->isInitialValue() || bottom.value()->isInitialValue() || left.value()->isInitialValue()) {
        if (top.value()->isInitialValue() && right.value()->isInitialValue() && bottom.value()->isInitialValue() && left.value()->isInitialValue() && !top.isImplicit()) {
            // All components are "initial" and "top" is not implicit.
            return getValueName(CSSValueInitial);
        }
        return String();
    }
    if (top.isImportant() != right.isImportant() || right.isImportant() != bottom.isImportant() || bottom.isImportant() != left.isImportant())
        return String();

    bool showLeft = !right.value()->equals(*left.value());
    bool showBottom = !top.value()->equals(*bottom.value()) || showLeft;
    bool showRight = !top.value()->equals(*right.value()) || showBottom;

    StringBuilder result;
    result.append(top.value()->cssText());
    if (showRight) {
        result.append(' ');
        result.append(right.value()->cssText());
    }
    if (showBottom) {
        result.append(' ');
        result.append(bottom.value()->cssText());
    }
    if (showLeft) {
        result.append(' ');
        result.append(left.value()->cssText());
    }
    return result.toString();
}
示例#2
0
String StylePropertySerializer::asText() const
{
    StringBuilder result;

    BitArray<numCSSProperties> shorthandPropertyUsed;
    BitArray<numCSSProperties> shorthandPropertyAppeared;

    unsigned size = m_propertySet.propertyCount();
    unsigned numDecls = 0;
    for (unsigned n = 0; n < size; ++n) {
        StylePropertySet::PropertyReference property = m_propertySet.propertyAt(n);
        CSSPropertyID propertyID = property.id();
        // Only enabled or internal properties should be part of the style.
        ASSERT(RuntimeCSSEnabled::isCSSPropertyEnabled(propertyID) || isInternalProperty(propertyID));
        CSSPropertyID shorthandPropertyID = CSSPropertyInvalid;
        CSSPropertyID borderFallbackShorthandProperty = CSSPropertyInvalid;
        String value;

        switch (propertyID) {
        case CSSPropertyBackgroundAttachment:
        case CSSPropertyBackgroundClip:
        case CSSPropertyBackgroundColor:
        case CSSPropertyBackgroundImage:
        case CSSPropertyBackgroundOrigin:
        case CSSPropertyBackgroundPositionX:
        case CSSPropertyBackgroundPositionY:
        case CSSPropertyBackgroundSize:
        case CSSPropertyBackgroundRepeatX:
        case CSSPropertyBackgroundRepeatY:
            shorthandPropertyAppeared.set(CSSPropertyBackground - firstCSSProperty);
            continue;
        case CSSPropertyContent:
            if (property.value()->isValueList())
                value = toCSSValueList(property.value())->customCSSText(AlwaysQuoteCSSString);
            break;
        case CSSPropertyBorderTopWidth:
        case CSSPropertyBorderRightWidth:
        case CSSPropertyBorderBottomWidth:
        case CSSPropertyBorderLeftWidth:
            if (!borderFallbackShorthandProperty)
                borderFallbackShorthandProperty = CSSPropertyBorderWidth;
        case CSSPropertyBorderTopStyle:
        case CSSPropertyBorderRightStyle:
        case CSSPropertyBorderBottomStyle:
        case CSSPropertyBorderLeftStyle:
            if (!borderFallbackShorthandProperty)
                borderFallbackShorthandProperty = CSSPropertyBorderStyle;
        case CSSPropertyBorderTopColor:
        case CSSPropertyBorderRightColor:
        case CSSPropertyBorderBottomColor:
        case CSSPropertyBorderLeftColor:
            if (!borderFallbackShorthandProperty)
                borderFallbackShorthandProperty = CSSPropertyBorderColor;

            // FIXME: Deal with cases where only some of border-(top|right|bottom|left) are specified.
            if (!shorthandPropertyAppeared.get(CSSPropertyBorder - firstCSSProperty)) {
                value = borderPropertyValue(ReturnNullOnUncommonValues);
                if (value.isNull())
                    shorthandPropertyAppeared.set(CSSPropertyBorder - firstCSSProperty);
                else
                    shorthandPropertyID = CSSPropertyBorder;
            } else if (shorthandPropertyUsed.get(CSSPropertyBorder - firstCSSProperty))
                shorthandPropertyID = CSSPropertyBorder;
            if (!shorthandPropertyID)
                shorthandPropertyID = borderFallbackShorthandProperty;
            break;
        case CSSPropertyWebkitBorderHorizontalSpacing:
        case CSSPropertyWebkitBorderVerticalSpacing:
            shorthandPropertyID = CSSPropertyBorderSpacing;
            break;
        case CSSPropertyFontFamily:
        case CSSPropertyLineHeight:
        case CSSPropertyFontSize:
        case CSSPropertyFontStyle:
        case CSSPropertyFontVariant:
        case CSSPropertyFontWeight:
            // Don't use CSSPropertyFont because old UAs can't recognize them but are important for editing.
            break;
        case CSSPropertyListStyleType:
        case CSSPropertyListStylePosition:
        case CSSPropertyListStyleImage:
            shorthandPropertyID = CSSPropertyListStyle;
            break;
        case CSSPropertyMarginTop:
        case CSSPropertyMarginRight:
        case CSSPropertyMarginBottom:
        case CSSPropertyMarginLeft:
            shorthandPropertyID = CSSPropertyMargin;
            break;
        case CSSPropertyOutlineWidth:
        case CSSPropertyOutlineStyle:
        case CSSPropertyOutlineColor:
            shorthandPropertyID = CSSPropertyOutline;
            break;
        case CSSPropertyOverflowX:
        case CSSPropertyOverflowY:
            shorthandPropertyID = CSSPropertyOverflow;
            break;
        case CSSPropertyPaddingTop:
        case CSSPropertyPaddingRight:
        case CSSPropertyPaddingBottom:
        case CSSPropertyPaddingLeft:
            shorthandPropertyID = CSSPropertyPadding;
            break;
        case CSSPropertyTransitionProperty:
        case CSSPropertyTransitionDuration:
        case CSSPropertyTransitionTimingFunction:
        case CSSPropertyTransitionDelay:
            shorthandPropertyID = CSSPropertyTransition;
            break;
        case CSSPropertyWebkitAnimationName:
        case CSSPropertyWebkitAnimationDuration:
        case CSSPropertyWebkitAnimationTimingFunction:
        case CSSPropertyWebkitAnimationDelay:
        case CSSPropertyWebkitAnimationIterationCount:
        case CSSPropertyWebkitAnimationDirection:
        case CSSPropertyWebkitAnimationFillMode:
            shorthandPropertyID = CSSPropertyWebkitAnimation;
            break;
        case CSSPropertyFlexDirection:
        case CSSPropertyFlexWrap:
            shorthandPropertyID = CSSPropertyFlexFlow;
            break;
        case CSSPropertyFlexBasis:
        case CSSPropertyFlexGrow:
        case CSSPropertyFlexShrink:
            shorthandPropertyID = CSSPropertyFlex;
            break;
        case CSSPropertyWebkitMaskPositionX:
        case CSSPropertyWebkitMaskPositionY:
        case CSSPropertyWebkitMaskRepeatX:
        case CSSPropertyWebkitMaskRepeatY:
        case CSSPropertyWebkitMaskImage:
        case CSSPropertyWebkitMaskRepeat:
        case CSSPropertyWebkitMaskPosition:
        case CSSPropertyWebkitMaskClip:
        case CSSPropertyWebkitMaskOrigin:
            shorthandPropertyID = CSSPropertyWebkitMask;
            break;
        case CSSPropertyWebkitTransformOriginX:
        case CSSPropertyWebkitTransformOriginY:
        case CSSPropertyWebkitTransformOriginZ:
            shorthandPropertyID = CSSPropertyWebkitTransformOrigin;
            break;
        case CSSPropertyWebkitTransitionProperty:
        case CSSPropertyWebkitTransitionDuration:
        case CSSPropertyWebkitTransitionTimingFunction:
        case CSSPropertyWebkitTransitionDelay:
            shorthandPropertyID = CSSPropertyWebkitTransition;
            break;
        default:
            break;
        }

        unsigned shortPropertyIndex = shorthandPropertyID - firstCSSProperty;
        if (shorthandPropertyID) {
            if (shorthandPropertyUsed.get(shortPropertyIndex))
                continue;
            if (!shorthandPropertyAppeared.get(shortPropertyIndex) && value.isNull())
                value = m_propertySet.getPropertyValue(shorthandPropertyID);
            shorthandPropertyAppeared.set(shortPropertyIndex);
        }

        if (!value.isNull()) {
            if (shorthandPropertyID) {
                propertyID = shorthandPropertyID;
                shorthandPropertyUsed.set(shortPropertyIndex);
            }
        } else
            value = property.value()->cssText();

        if (value == "initial" && !CSSProperty::isInheritedProperty(propertyID))
            continue;

        result.append(getPropertyText(propertyID, value, property.isImportant(), numDecls++));
    }

    if (shorthandPropertyAppeared.get(CSSPropertyBackground - firstCSSProperty))
        appendBackgroundPropertyAsText(result, numDecls);

    ASSERT(!numDecls ^ !result.isEmpty());
    return result.toString();
}