String StylePropertySet::getPropertyValue(T property) const
{
RefPtrWillBeRawPtr<CSSValue> value = getPropertyCSSValue(property);
if (value)
return value->cssText();
return serializeShorthand(*this, property);
}
String StylePropertySerializer::getShorthandValue(const StylePropertyShorthand& shorthand) const
{
String commonValue;
StringBuilder result;
for (unsigned i = 0; i < shorthand.length(); ++i) {
if (!m_propertySet.isPropertyImplicit(shorthand.properties()[i])) {
RefPtrWillBeRawPtr<CSSValue> value = m_propertySet.getPropertyCSSValue(shorthand.properties()[i]);
if (!value)
return String();
String valueText = value->cssText();
if (!i)
commonValue = valueText;
else if (!commonValue.isNull() && commonValue != valueText)
commonValue = String();
if (value->isInitialValue())
continue;
if (!result.isEmpty())
result.append(' ');
result.append(valueText);
} else
commonValue = String();
}
if (isInitialOrInherit(commonValue))
return commonValue;
if (result.isEmpty())
return String();
return result.toString();
}
void V8CSSStyleDeclaration::namedPropertyGetterCustom(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info)
{
if (!name->IsString())
return;
// First look for API defined attributes on the style declaration object.
if (v8CallBoolean(info.Holder()->HasRealNamedCallbackProperty(info.GetIsolate()->GetCurrentContext(), name.As<v8::String>())))
return;
// Search the style declaration.
CSSPropertyInfo* propInfo = cssPropertyInfo(name.As<v8::String>(), info.GetIsolate());
// Do not handle non-property names.
if (!propInfo)
return;
CSSStyleDeclaration* impl = V8CSSStyleDeclaration::toImpl(info.Holder());
RefPtrWillBeRawPtr<CSSValue> cssValue = impl->getPropertyCSSValueInternal(static_cast<CSSPropertyID>(propInfo->propID));
if (cssValue) {
v8SetReturnValueStringOrNull(info, cssValue->cssText(), info.GetIsolate());
return;
}
String result = impl->getPropertyValueInternal(static_cast<CSSPropertyID>(propInfo->propID));
v8SetReturnValueString(info, result, info.GetIsolate());
}
String StylePropertySerializer::borderSpacingValue(const StylePropertyShorthand& shorthand) const
{
RefPtrWillBeRawPtr<CSSValue> horizontalValue = m_propertySet.getPropertyCSSValue(shorthand.properties()[0]);
RefPtrWillBeRawPtr<CSSValue> verticalValue = m_propertySet.getPropertyCSSValue(shorthand.properties()[1]);
// While standard border-spacing property does not allow specifying border-spacing-vertical without
// specifying border-spacing-horizontal <http://www.w3.org/TR/CSS21/tables.html#separated-borders>,
// -webkit-border-spacing-vertical can be set without -webkit-border-spacing-horizontal.
if (!horizontalValue || !verticalValue)
return String();
String horizontalValueCSSText = horizontalValue->cssText();
String verticalValueCSSText = verticalValue->cssText();
if (horizontalValueCSSText == verticalValueCSSText)
return horizontalValueCSSText;
return horizontalValueCSSText + ' ' + verticalValueCSSText;
}
String StylePropertySet::getPropertyValue(CSSPropertyID propertyID) const
{
RefPtrWillBeRawPtr<CSSValue> value = getPropertyCSSValue(propertyID);
if (value)
return value->cssText();
return StylePropertySerializer(*this).getPropertyValue(propertyID);
}
String StylePropertySerializer::backgroundRepeatPropertyValue() const
{
RefPtrWillBeRawPtr<CSSValue> repeatX = m_propertySet.getPropertyCSSValue(CSSPropertyBackgroundRepeatX);
RefPtrWillBeRawPtr<CSSValue> repeatY = m_propertySet.getPropertyCSSValue(CSSPropertyBackgroundRepeatY);
if (!repeatX || !repeatY)
return String();
if (repeatX->cssValueType() != repeatY->cssValueType())
return String();
if (m_propertySet.propertyIsImportant(CSSPropertyBackgroundRepeatX) != m_propertySet.propertyIsImportant(CSSPropertyBackgroundRepeatY))
return String();
StringBuilder builder;
switch (repeatX->cssValueType()) {
case CSSValue::CSS_INHERIT:
case CSSValue::CSS_INITIAL:
return repeatX->cssText();
case CSSValue::CSS_PRIMITIVE_VALUE:
{
CSSValueID repeatXValueId = toCSSPrimitiveValue(repeatX.get())->getValueID();
CSSValueID repeatYValueId = toCSSPrimitiveValue(repeatY.get())->getValueID();
if (repeatXValueId == repeatYValueId)
return repeatX->cssText();
if (repeatXValueId == CSSValueNoRepeat && repeatYValueId == CSSValueRepeat) {
builder.append("repeat-y");
break;
}
if (repeatXValueId == CSSValueRepeat && repeatYValueId == CSSValueNoRepeat) {
builder.append("repeat-x");
break;
}
// Fall through intentional.
}
case CSSValue::CSS_CUSTOM:
case CSSValue::CSS_VALUE_LIST:
default:
builder.append(repeatX->cssText());
builder.append(' ');
builder.append(repeatY->cssText());
break;
}
return builder.toString();
}
// only returns a non-null value if all properties have the same, non-null value
String StylePropertySerializer::getCommonValue(const StylePropertyShorthand& shorthand) const
{
String res;
bool lastPropertyWasImportant = false;
for (unsigned i = 0; i < shorthand.length(); ++i) {
RefPtrWillBeRawPtr<CSSValue> value = m_propertySet.getPropertyCSSValue(shorthand.properties()[i]);
// FIXME: CSSInitialValue::cssText should generate the right value.
if (!value)
return String();
String text = value->cssText();
if (text.isNull())
return String();
if (res.isNull())
res = text;
else if (res != text)
return String();
bool currentPropertyIsImportant = m_propertySet.propertyIsImportant(shorthand.properties()[i]);
if (i && lastPropertyWasImportant != currentPropertyIsImportant)
return String();
lastPropertyWasImportant = currentPropertyIsImportant;
}
return res;
}
void StylePropertySerializer::appendBackgroundPropertyAsText(StringBuilder& result, unsigned& numDecls) const
{
if (isPropertyShorthandAvailable(backgroundShorthand())) {
String backgroundValue = getPropertyValue(CSSPropertyBackground);
bool isImportant = m_propertySet.propertyIsImportant(CSSPropertyBackgroundImage);
result.append(getPropertyText(CSSPropertyBackground, backgroundValue, isImportant, numDecls++));
return;
}
if (shorthandHasOnlyInitialOrInheritedValue(backgroundShorthand())) {
RefPtrWillBeRawPtr<CSSValue> value = m_propertySet.getPropertyCSSValue(CSSPropertyBackgroundImage);
bool isImportant = m_propertySet.propertyIsImportant(CSSPropertyBackgroundImage);
result.append(getPropertyText(CSSPropertyBackground, value->cssText(), isImportant, numDecls++));
return;
}
// backgroundShorthandProperty without layered shorhand properties
const CSSPropertyID backgroundPropertyIds[] = {
CSSPropertyBackgroundImage,
CSSPropertyBackgroundAttachment,
CSSPropertyBackgroundColor,
CSSPropertyBackgroundSize,
CSSPropertyBackgroundOrigin,
CSSPropertyBackgroundClip
};
for (unsigned i = 0; i < WTF_ARRAY_LENGTH(backgroundPropertyIds); ++i) {
CSSPropertyID propertyID = backgroundPropertyIds[i];
RefPtrWillBeRawPtr<CSSValue> value = m_propertySet.getPropertyCSSValue(propertyID);
if (!value)
continue;
result.append(getPropertyText(propertyID, value->cssText(), m_propertySet.propertyIsImportant(propertyID), numDecls++));
}
// FIXME: This is a not-so-nice way to turn x/y positions into single background-position in output.
// It is required because background-position-x/y are non-standard properties and WebKit generated output
// would not work in Firefox (<rdar://problem/5143183>)
// It would be a better solution if background-position was CSS_PAIR.
if (shorthandHasOnlyInitialOrInheritedValue(backgroundPositionShorthand())) {
RefPtrWillBeRawPtr<CSSValue> value = m_propertySet.getPropertyCSSValue(CSSPropertyBackgroundPositionX);
bool isImportant = m_propertySet.propertyIsImportant(CSSPropertyBackgroundPositionX);
result.append(getPropertyText(CSSPropertyBackgroundPosition, value->cssText(), isImportant, numDecls++));
} else if (isPropertyShorthandAvailable(backgroundPositionShorthand())) {
String positionValue = m_propertySet.getPropertyValue(CSSPropertyBackgroundPosition);
bool isImportant = m_propertySet.propertyIsImportant(CSSPropertyBackgroundPositionX);
if (!positionValue.isNull())
result.append(getPropertyText(CSSPropertyBackgroundPosition, positionValue, isImportant, numDecls++));
} else {
// should check background-position-x or background-position-y.
if (RefPtrWillBeRawPtr<CSSValue> value = m_propertySet.getPropertyCSSValue(CSSPropertyBackgroundPositionX)) {
if (!value->isImplicitInitialValue()) {
bool isImportant = m_propertySet.propertyIsImportant(CSSPropertyBackgroundPositionX);
result.append(getPropertyText(CSSPropertyBackgroundPositionX, value->cssText(), isImportant, numDecls++));
}
}
if (RefPtrWillBeRawPtr<CSSValue> value = m_propertySet.getPropertyCSSValue(CSSPropertyBackgroundPositionY)) {
if (!value->isImplicitInitialValue()) {
bool isImportant = m_propertySet.propertyIsImportant(CSSPropertyBackgroundPositionY);
result.append(getPropertyText(CSSPropertyBackgroundPositionY, value->cssText(), isImportant, numDecls++));
}
}
}
String repeatValue = m_propertySet.getPropertyValue(CSSPropertyBackgroundRepeat);
if (!repeatValue.isNull())
result.append(getPropertyText(CSSPropertyBackgroundRepeat, repeatValue, m_propertySet.propertyIsImportant(CSSPropertyBackgroundRepeatX), numDecls++));
}
String StylePropertySerializer::getLayeredShorthandValue(const StylePropertyShorthand& shorthand) const
{
StringBuilder result;
const unsigned size = shorthand.length();
// Begin by collecting the properties into an array.
WillBeHeapVector<RefPtrWillBeMember<CSSValue> > values(size);
size_t numLayers = 0;
for (unsigned i = 0; i < size; ++i) {
values[i] = m_propertySet.getPropertyCSSValue(shorthand.properties()[i]);
if (values[i]) {
if (values[i]->isBaseValueList()) {
CSSValueList* valueList = toCSSValueList(values[i].get());
numLayers = max(valueList->length(), numLayers);
} else
numLayers = max<size_t>(1U, numLayers);
}
}
String commonValue;
bool commonValueInitialized = false;
// Now stitch the properties together. Implicit initial values are flagged as such and
// can safely be omitted.
for (size_t i = 0; i < numLayers; i++) {
StringBuilder layerResult;
bool useRepeatXShorthand = false;
bool useRepeatYShorthand = false;
bool useSingleWordShorthand = false;
bool foundPositionYCSSProperty = false;
for (unsigned j = 0; j < size; j++) {
RefPtrWillBeRawPtr<CSSValue> value = nullptr;
if (values[j]) {
if (values[j]->isBaseValueList())
value = toCSSValueList(values[j].get())->item(i);
else {
value = values[j];
// Color only belongs in the last layer.
if (shorthand.properties()[j] == CSSPropertyBackgroundColor) {
if (i != numLayers - 1)
value = nullptr;
} else if (i) {
// Other singletons only belong in the first layer.
value = nullptr;
}
}
}
// We need to report background-repeat as it was written in the CSS. If the property is implicit,
// then it was written with only one value. Here we figure out which value that was so we can
// report back correctly.
if ((shorthand.properties()[j] == CSSPropertyBackgroundRepeatX && m_propertySet.isPropertyImplicit(shorthand.properties()[j]))
|| (shorthand.properties()[j] == CSSPropertyWebkitMaskRepeatX && m_propertySet.isPropertyImplicit(shorthand.properties()[j]))) {
// BUG 49055: make sure the value was not reset in the layer check just above.
if ((j < size - 1 && shorthand.properties()[j + 1] == CSSPropertyBackgroundRepeatY && value)
|| (j < size - 1 && shorthand.properties()[j + 1] == CSSPropertyWebkitMaskRepeatY && value)) {
RefPtrWillBeRawPtr<CSSValue> yValue = nullptr;
RefPtrWillBeRawPtr<CSSValue> nextValue = values[j + 1];
if (nextValue->isValueList())
yValue = toCSSValueList(nextValue.get())->itemWithoutBoundsCheck(i);
else
yValue = nextValue;
// background-repeat-x(y) or mask-repeat-x(y) may be like this : "initial, repeat". We can omit the implicit initial values
// before starting to compare their values.
if (value->isImplicitInitialValue() || yValue->isImplicitInitialValue())
continue;
// FIXME: At some point we need to fix this code to avoid returning an invalid shorthand,
// since some longhand combinations are not serializable into a single shorthand.
if (!value->isPrimitiveValue() || !yValue->isPrimitiveValue())
continue;
CSSValueID xId = toCSSPrimitiveValue(value.get())->getValueID();
CSSValueID yId = toCSSPrimitiveValue(yValue.get())->getValueID();
if (xId != yId) {
if (xId == CSSValueRepeat && yId == CSSValueNoRepeat) {
useRepeatXShorthand = true;
++j;
} else if (xId == CSSValueNoRepeat && yId == CSSValueRepeat) {
useRepeatYShorthand = true;
continue;
}
} else {
useSingleWordShorthand = true;
++j;
}
}
}
String valueText;
if (value && !value->isImplicitInitialValue()) {
if (!layerResult.isEmpty())
layerResult.append(' ');
if (foundPositionYCSSProperty
&& (shorthand.properties()[j] == CSSPropertyBackgroundSize || shorthand.properties()[j] == CSSPropertyWebkitMaskSize))
layerResult.appendLiteral("/ ");
if (!foundPositionYCSSProperty
&& (shorthand.properties()[j] == CSSPropertyBackgroundSize || shorthand.properties()[j] == CSSPropertyWebkitMaskSize))
continue;
if (useRepeatXShorthand) {
useRepeatXShorthand = false;
layerResult.append(getValueName(CSSValueRepeatX));
} else if (useRepeatYShorthand) {
useRepeatYShorthand = false;
layerResult.append(getValueName(CSSValueRepeatY));
} else {
if (useSingleWordShorthand)
useSingleWordShorthand = false;
valueText = value->cssText();
layerResult.append(valueText);
}
if (shorthand.properties()[j] == CSSPropertyBackgroundPositionY
|| shorthand.properties()[j] == CSSPropertyWebkitMaskPositionY) {
foundPositionYCSSProperty = true;
// background-position is a special case: if only the first offset is specified,
// the second one defaults to "center", not the same value.
if (commonValueInitialized && commonValue != "initial" && commonValue != "inherit")
commonValue = String();
}
}
if (!commonValueInitialized) {
commonValue = valueText;
commonValueInitialized = true;
} else if (!commonValue.isNull() && commonValue != valueText)
commonValue = String();
}
if (!layerResult.isEmpty()) {
if (!result.isEmpty())
result.appendLiteral(", ");
result.append(layerResult);
}
}
if (isInitialOrInherit(commonValue))
return commonValue;
if (result.isEmpty())
return String();
return result.toString();
}
String StylePropertySerializer::getPropertyValue(CSSPropertyID propertyID) const
{
// Shorthand and 4-values properties
switch (propertyID) {
case CSSPropertyAnimation:
return getLayeredShorthandValue(animationShorthand());
case CSSPropertyBorderSpacing:
return borderSpacingValue(borderSpacingShorthand());
case CSSPropertyBackgroundPosition:
return getLayeredShorthandValue(backgroundPositionShorthand());
case CSSPropertyBackgroundRepeat:
return backgroundRepeatPropertyValue();
case CSSPropertyBackground:
return getLayeredShorthandValue(backgroundShorthand());
case CSSPropertyBorder:
return borderPropertyValue(OmitUncommonValues);
case CSSPropertyBorderTop:
return getShorthandValue(borderTopShorthand());
case CSSPropertyBorderRight:
return getShorthandValue(borderRightShorthand());
case CSSPropertyBorderBottom:
return getShorthandValue(borderBottomShorthand());
case CSSPropertyBorderLeft:
return getShorthandValue(borderLeftShorthand());
case CSSPropertyOutline:
return getShorthandValue(outlineShorthand());
case CSSPropertyBorderColor:
return get4Values(borderColorShorthand());
case CSSPropertyBorderWidth:
return get4Values(borderWidthShorthand());
case CSSPropertyBorderStyle:
return get4Values(borderStyleShorthand());
case CSSPropertyWebkitColumnRule:
return getShorthandValue(webkitColumnRuleShorthand());
case CSSPropertyWebkitColumns:
return getShorthandValue(webkitColumnsShorthand());
case CSSPropertyFlex:
return getShorthandValue(flexShorthand());
case CSSPropertyFlexFlow:
return getShorthandValue(flexFlowShorthand());
case CSSPropertyGridColumn:
return getShorthandValue(gridColumnShorthand());
case CSSPropertyGridRow:
return getShorthandValue(gridRowShorthand());
case CSSPropertyGridArea:
return getShorthandValue(gridAreaShorthand());
case CSSPropertyFont:
return fontValue();
case CSSPropertyMargin:
return get4Values(marginShorthand());
case CSSPropertyWebkitMarginCollapse:
return getShorthandValue(webkitMarginCollapseShorthand());
case CSSPropertyOverflow:
return getCommonValue(overflowShorthand());
case CSSPropertyPadding:
return get4Values(paddingShorthand());
case CSSPropertyTransition:
return getLayeredShorthandValue(transitionShorthand());
case CSSPropertyListStyle:
return getShorthandValue(listStyleShorthand());
case CSSPropertyWebkitMaskPosition:
return getLayeredShorthandValue(webkitMaskPositionShorthand());
case CSSPropertyWebkitMaskRepeat:
return getLayeredShorthandValue(webkitMaskRepeatShorthand());
case CSSPropertyWebkitMask:
return getLayeredShorthandValue(webkitMaskShorthand());
case CSSPropertyWebkitTextEmphasis:
return getShorthandValue(webkitTextEmphasisShorthand());
case CSSPropertyWebkitTextStroke:
return getShorthandValue(webkitTextStrokeShorthand());
case CSSPropertyTransformOrigin:
case CSSPropertyWebkitTransformOrigin:
return getShorthandValue(webkitTransformOriginShorthand());
case CSSPropertyWebkitTransition:
return getLayeredShorthandValue(webkitTransitionShorthand());
case CSSPropertyWebkitAnimation:
return getLayeredShorthandValue(webkitAnimationShorthand());
case CSSPropertyMarker: {
RefPtrWillBeRawPtr<CSSValue> value = m_propertySet.getPropertyCSSValue(CSSPropertyMarkerStart);
if (value)
return value->cssText();
return String();
}
case CSSPropertyBorderRadius:
return get4Values(borderRadiusShorthand());
default:
return String();
}
}
