| /* |
| * (C) 1999-2003 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved. |
| * Copyright (C) 2011 Research In Motion Limited. All rights reserved. |
| * Copyright (C) 2013 Intel Corporation. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "StyleProperties.h" |
| |
| #include "CSSComputedStyleDeclaration.h" |
| #include "CSSCustomPropertyValue.h" |
| #include "CSSDeferredParser.h" |
| #include "CSSParser.h" |
| #include "CSSPendingSubstitutionValue.h" |
| #include "CSSPropertyParser.h" |
| #include "CSSTokenizer.h" |
| #include "CSSValueKeywords.h" |
| #include "CSSValueList.h" |
| #include "CSSValuePool.h" |
| #include "Color.h" |
| #include "Document.h" |
| #include "PropertySetCSSStyleDeclaration.h" |
| #include "StylePropertyShorthand.h" |
| #include "StylePropertyShorthandFunctions.h" |
| #include "StyleSheetContents.h" |
| #include <bitset> |
| #include <wtf/text/StringBuilder.h> |
| |
| #ifndef NDEBUG |
| #include <stdio.h> |
| #include <wtf/text/CString.h> |
| #endif |
| |
| namespace WebCore { |
| |
| static size_t sizeForImmutableStylePropertiesWithPropertyCount(unsigned count) |
| { |
| return sizeof(ImmutableStyleProperties) - sizeof(void*) + sizeof(CSSValue*) * count + sizeof(StylePropertyMetadata) * count; |
| } |
| |
| static bool isInitialOrInherit(const String& value) |
| { |
| return value.length() == 7 && (value == "initial" || value == "inherit"); |
| } |
| |
| Ref<ImmutableStyleProperties> ImmutableStyleProperties::create(const CSSProperty* properties, unsigned count, CSSParserMode cssParserMode) |
| { |
| void* slot = WTF::fastMalloc(sizeForImmutableStylePropertiesWithPropertyCount(count)); |
| return adoptRef(*new (NotNull, slot) ImmutableStyleProperties(properties, count, cssParserMode)); |
| } |
| |
| Ref<ImmutableStyleProperties> StyleProperties::immutableCopyIfNeeded() const |
| { |
| if (is<ImmutableStyleProperties>(*this)) |
| return downcast<ImmutableStyleProperties>(const_cast<StyleProperties&>(*this)); |
| const MutableStyleProperties& mutableThis = downcast<MutableStyleProperties>(*this); |
| return ImmutableStyleProperties::create(mutableThis.m_propertyVector.data(), mutableThis.m_propertyVector.size(), cssParserMode()); |
| } |
| |
| MutableStyleProperties::MutableStyleProperties(CSSParserMode cssParserMode) |
| : StyleProperties(cssParserMode, MutablePropertiesType) |
| { |
| } |
| |
| MutableStyleProperties::MutableStyleProperties(const CSSProperty* properties, unsigned length) |
| : StyleProperties(HTMLStandardMode, MutablePropertiesType) |
| { |
| m_propertyVector.reserveInitialCapacity(length); |
| for (unsigned i = 0; i < length; ++i) |
| m_propertyVector.uncheckedAppend(properties[i]); |
| } |
| |
| MutableStyleProperties::~MutableStyleProperties() = default; |
| |
| ImmutableStyleProperties::ImmutableStyleProperties(const CSSProperty* properties, unsigned length, CSSParserMode cssParserMode) |
| : StyleProperties(cssParserMode, length) |
| { |
| StylePropertyMetadata* metadataArray = const_cast<StylePropertyMetadata*>(this->metadataArray()); |
| CSSValue** valueArray = const_cast<CSSValue**>(this->valueArray()); |
| for (unsigned i = 0; i < length; ++i) { |
| metadataArray[i] = properties[i].metadata(); |
| valueArray[i] = properties[i].value(); |
| valueArray[i]->ref(); |
| } |
| } |
| |
| ImmutableStyleProperties::~ImmutableStyleProperties() |
| { |
| CSSValue** valueArray = const_cast<CSSValue**>(this->valueArray()); |
| for (unsigned i = 0; i < m_arraySize; ++i) |
| valueArray[i]->deref(); |
| } |
| |
| MutableStyleProperties::MutableStyleProperties(const StyleProperties& other) |
| : StyleProperties(other.cssParserMode(), MutablePropertiesType) |
| { |
| ASSERT(other.type() != DeferredPropertiesType); |
| if (is<MutableStyleProperties>(other)) |
| m_propertyVector = downcast<MutableStyleProperties>(other).m_propertyVector; |
| else { |
| const auto& immutableOther = downcast<ImmutableStyleProperties>(other); |
| unsigned propertyCount = immutableOther.propertyCount(); |
| m_propertyVector.reserveInitialCapacity(propertyCount); |
| for (unsigned i = 0; i < propertyCount; ++i) |
| m_propertyVector.uncheckedAppend(immutableOther.propertyAt(i).toCSSProperty()); |
| } |
| } |
| |
| String StyleProperties::getPropertyValue(CSSPropertyID propertyID) const |
| { |
| RefPtr<CSSValue> value = getPropertyCSSValue(propertyID); |
| if (value) |
| return value->cssText(); |
| |
| const StylePropertyShorthand& shorthand = shorthandForProperty(propertyID); |
| if (shorthand.length()) { |
| RefPtr<CSSValue> value = getPropertyCSSValueInternal(shorthand.properties()[0]); |
| if (!value || value->isPendingSubstitutionValue()) |
| return String(); |
| } |
| |
| // Shorthand and 4-values properties |
| switch (propertyID) { |
| case CSSPropertyAll: |
| return getCommonValue(allShorthand()); |
| case CSSPropertyAnimation: |
| return getLayeredShorthandValue(animationShorthand()); |
| case CSSPropertyBorderSpacing: |
| return borderSpacingValue(borderSpacingShorthand()); |
| case CSSPropertyBackgroundPosition: |
| return getLayeredShorthandValue(backgroundPositionShorthand()); |
| case CSSPropertyBackgroundRepeat: |
| return getLayeredShorthandValue(backgroundRepeatShorthand()); |
| case CSSPropertyBackground: |
| return getLayeredShorthandValue(backgroundShorthand()); |
| case CSSPropertyBorder: |
| return borderPropertyValue(borderWidthShorthand(), borderStyleShorthand(), borderColorShorthand()); |
| case CSSPropertyBorderTop: |
| return getShorthandValue(borderTopShorthand()); |
| case CSSPropertyBorderRight: |
| return getShorthandValue(borderRightShorthand()); |
| case CSSPropertyBorderBottom: |
| return getShorthandValue(borderBottomShorthand()); |
| case CSSPropertyBorderLeft: |
| return getShorthandValue(borderLeftShorthand()); |
| case CSSPropertyBorderBlock: |
| return borderPropertyValue(borderBlockWidthShorthand(), borderBlockStyleShorthand(), borderBlockColorShorthand()); |
| case CSSPropertyBorderBlockColor: |
| return get2Values(borderBlockColorShorthand()); |
| case CSSPropertyBorderBlockStyle: |
| return get2Values(borderBlockStyleShorthand()); |
| case CSSPropertyBorderBlockWidth: |
| return get2Values(borderBlockWidthShorthand()); |
| case CSSPropertyBorderBlockStart: |
| return getShorthandValue(borderBlockStartShorthand()); |
| case CSSPropertyBorderBlockEnd: |
| return getShorthandValue(borderBlockEndShorthand()); |
| case CSSPropertyBorderInline: |
| return borderPropertyValue(borderInlineWidthShorthand(), borderInlineStyleShorthand(), borderInlineColorShorthand()); |
| case CSSPropertyBorderInlineColor: |
| return get2Values(borderInlineColorShorthand()); |
| case CSSPropertyBorderInlineStyle: |
| return get2Values(borderInlineStyleShorthand()); |
| case CSSPropertyBorderInlineWidth: |
| return get2Values(borderInlineWidthShorthand()); |
| case CSSPropertyBorderInlineStart: |
| return getShorthandValue(borderInlineStartShorthand()); |
| case CSSPropertyBorderInlineEnd: |
| return getShorthandValue(borderInlineEndShorthand()); |
| case CSSPropertyOutline: |
| return getShorthandValue(outlineShorthand()); |
| case CSSPropertyBorderColor: |
| return get4Values(borderColorShorthand()); |
| case CSSPropertyBorderWidth: |
| return get4Values(borderWidthShorthand()); |
| case CSSPropertyBorderStyle: |
| return get4Values(borderStyleShorthand()); |
| case CSSPropertyColumnRule: |
| return getShorthandValue(columnRuleShorthand()); |
| case CSSPropertyColumns: |
| return getShorthandValue(columnsShorthand()); |
| case CSSPropertyFlex: |
| return getShorthandValue(flexShorthand()); |
| case CSSPropertyFlexFlow: |
| return getShorthandValue(flexFlowShorthand()); |
| case CSSPropertyGridArea: |
| return getShorthandValue(gridAreaShorthand()); |
| case CSSPropertyGridTemplate: |
| return getShorthandValue(gridTemplateShorthand()); |
| case CSSPropertyGrid: |
| return getShorthandValue(gridShorthand()); |
| case CSSPropertyGridColumn: |
| return getShorthandValue(gridColumnShorthand()); |
| case CSSPropertyGridRow: |
| return getShorthandValue(gridRowShorthand()); |
| case CSSPropertyPlaceContent: |
| return getAlignmentShorthandValue(placeContentShorthand()); |
| case CSSPropertyPlaceItems: |
| return getAlignmentShorthandValue(placeItemsShorthand()); |
| case CSSPropertyPlaceSelf: |
| return getAlignmentShorthandValue(placeSelfShorthand()); |
| case CSSPropertyFont: |
| return fontValue(); |
| case CSSPropertyInset: |
| return get4Values(insetShorthand()); |
| case CSSPropertyInsetBlock: |
| return get2Values(insetBlockShorthand()); |
| case CSSPropertyInsetInline: |
| return get2Values(insetInlineShorthand()); |
| case CSSPropertyMargin: |
| return get4Values(marginShorthand()); |
| case CSSPropertyMarginBlock: |
| return get2Values(marginBlockShorthand()); |
| case CSSPropertyMarginInline: |
| return get2Values(marginInlineShorthand()); |
| case CSSPropertyWebkitMarginCollapse: |
| return getShorthandValue(webkitMarginCollapseShorthand()); |
| case CSSPropertyOverflow: |
| return getCommonValue(overflowShorthand()); |
| case CSSPropertyPadding: |
| return get4Values(paddingShorthand()); |
| case CSSPropertyPaddingBlock: |
| return get2Values(paddingBlockShorthand()); |
| case CSSPropertyPaddingInline: |
| return get2Values(paddingInlineShorthand()); |
| case CSSPropertyTransition: |
| return getLayeredShorthandValue(transitionShorthand()); |
| case CSSPropertyListStyle: |
| return getShorthandValue(listStyleShorthand()); |
| case CSSPropertyWebkitMarquee: |
| return getShorthandValue(webkitMarqueeShorthand()); |
| 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 CSSPropertyPerspectiveOrigin: |
| return getShorthandValue(perspectiveOriginShorthand()); |
| case CSSPropertyTransformOrigin: |
| return getShorthandValue(transformOriginShorthand()); |
| case CSSPropertyMarker: { |
| RefPtr<CSSValue> value = getPropertyCSSValueInternal(CSSPropertyMarkerStart); |
| if (value) |
| return value->cssText(); |
| return String(); |
| } |
| case CSSPropertyBorderRadius: |
| return get4Values(borderRadiusShorthand()); |
| #if ENABLE(CSS_SCROLL_SNAP) |
| case CSSPropertyScrollSnapMargin: |
| return get4Values(scrollSnapMarginShorthand()); |
| case CSSPropertyScrollPadding: |
| return get4Values(scrollPaddingShorthand()); |
| #endif |
| default: |
| return String(); |
| } |
| } |
| |
| Optional<Color> StyleProperties::propertyAsColor(CSSPropertyID property) const |
| { |
| auto colorValue = getPropertyCSSValue(property); |
| if (!is<CSSPrimitiveValue>(colorValue)) |
| return WTF::nullopt; |
| |
| auto& primitiveColor = downcast<CSSPrimitiveValue>(*colorValue); |
| return primitiveColor.isRGBColor() ? primitiveColor.color() : CSSParser::parseColor(colorValue->cssText()); |
| } |
| |
| CSSValueID StyleProperties::propertyAsValueID(CSSPropertyID property) const |
| { |
| auto cssValue = getPropertyCSSValue(property); |
| return is<CSSPrimitiveValue>(cssValue) ? downcast<CSSPrimitiveValue>(*cssValue).valueID() : CSSValueInvalid; |
| } |
| |
| String StyleProperties::getCustomPropertyValue(const String& propertyName) const |
| { |
| RefPtr<CSSValue> value = getCustomPropertyCSSValue(propertyName); |
| if (value) |
| return value->cssText(); |
| return String(); |
| } |
| |
| String StyleProperties::borderSpacingValue(const StylePropertyShorthand& shorthand) const |
| { |
| RefPtr<CSSValue> horizontalValue = getPropertyCSSValueInternal(shorthand.properties()[0]); |
| RefPtr<CSSValue> verticalValue = getPropertyCSSValueInternal(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; |
| } |
| |
| void StyleProperties::appendFontLonghandValueIfExplicit(CSSPropertyID propertyID, StringBuilder& result, String& commonValue) const |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) |
| return; // All longhands must have at least implicit values if "font" is specified. |
| |
| if (propertyAt(foundPropertyIndex).isImplicit()) { |
| commonValue = String(); |
| return; |
| } |
| |
| char prefix = '\0'; |
| switch (propertyID) { |
| case CSSPropertyFontStyle: |
| break; // No prefix. |
| case CSSPropertyFontFamily: |
| case CSSPropertyFontVariantCaps: |
| case CSSPropertyFontWeight: |
| case CSSPropertyFontStretch: |
| prefix = ' '; |
| break; |
| case CSSPropertyLineHeight: |
| prefix = '/'; |
| break; |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| |
| if (prefix && !result.isEmpty()) |
| result.append(prefix); |
| String value = propertyAt(foundPropertyIndex).value()->cssText(); |
| result.append(value); |
| if (!commonValue.isNull() && commonValue != value) |
| commonValue = String(); |
| } |
| |
| String StyleProperties::fontValue() const |
| { |
| int fontSizePropertyIndex = findPropertyIndex(CSSPropertyFontSize); |
| int fontFamilyPropertyIndex = findPropertyIndex(CSSPropertyFontFamily); |
| if (fontSizePropertyIndex == -1 || fontFamilyPropertyIndex == -1) |
| return emptyString(); |
| |
| PropertyReference fontSizeProperty = propertyAt(fontSizePropertyIndex); |
| PropertyReference fontFamilyProperty = propertyAt(fontFamilyPropertyIndex); |
| if (fontSizeProperty.isImplicit() || fontFamilyProperty.isImplicit()) |
| return emptyString(); |
| |
| String commonValue = fontSizeProperty.value()->cssText(); |
| StringBuilder result; |
| appendFontLonghandValueIfExplicit(CSSPropertyFontStyle, result, commonValue); |
| appendFontLonghandValueIfExplicit(CSSPropertyFontVariantCaps, result, commonValue); |
| appendFontLonghandValueIfExplicit(CSSPropertyFontWeight, result, commonValue); |
| appendFontLonghandValueIfExplicit(CSSPropertyFontStretch, result, commonValue); |
| if (!result.isEmpty()) |
| result.append(' '); |
| result.append(fontSizeProperty.value()->cssText()); |
| appendFontLonghandValueIfExplicit(CSSPropertyLineHeight, result, commonValue); |
| if (!result.isEmpty()) |
| result.append(' '); |
| result.append(fontFamilyProperty.value()->cssText()); |
| if (isInitialOrInherit(commonValue)) |
| return commonValue; |
| return result.toString(); |
| } |
| |
| String StyleProperties::get2Values(const StylePropertyShorthand& shorthand) const |
| { |
| // Assume the properties are in the usual order start, end. |
| int startValueIndex = findPropertyIndex(shorthand.properties()[0]); |
| int endValueIndex = findPropertyIndex(shorthand.properties()[1]); |
| |
| if (startValueIndex == -1 || endValueIndex == -1) |
| return { }; |
| |
| auto start = propertyAt(startValueIndex); |
| auto end = propertyAt(endValueIndex); |
| |
| // All 2 properties must be specified. |
| if (!start.value() || !end.value()) |
| return { }; |
| |
| // Important flags must be the same |
| if (start.isImportant() != end.isImportant()) |
| return { }; |
| |
| if (start.isInherited() && end.isInherited()) |
| return getValueName(CSSValueInherit); |
| |
| if (start.value()->isInitialValue() || end.value()->isInitialValue()) { |
| if (start.value()->isInitialValue() && end.value()->isInitialValue() && !start.isImplicit()) |
| return getValueName(CSSValueInitial); |
| return { }; |
| } |
| |
| StringBuilder result; |
| result.append(start.value()->cssText()); |
| if (!start.value()->equals(*end.value())) { |
| result.append(' '); |
| result.append(end.value()->cssText()); |
| } |
| return result.toString(); |
| } |
| |
| String StyleProperties::get4Values(const StylePropertyShorthand& shorthand) const |
| { |
| // Assume the properties are in the usual order top, right, bottom, left. |
| int topValueIndex = findPropertyIndex(shorthand.properties()[0]); |
| int rightValueIndex = findPropertyIndex(shorthand.properties()[1]); |
| int bottomValueIndex = findPropertyIndex(shorthand.properties()[2]); |
| int leftValueIndex = findPropertyIndex(shorthand.properties()[3]); |
| |
| if (topValueIndex == -1 || rightValueIndex == -1 || bottomValueIndex == -1 || leftValueIndex == -1) |
| return String(); |
| |
| PropertyReference top = propertyAt(topValueIndex); |
| PropertyReference right = propertyAt(rightValueIndex); |
| PropertyReference bottom = propertyAt(bottomValueIndex); |
| PropertyReference left = propertyAt(leftValueIndex); |
| |
| // All 4 properties must be specified. |
| if (!top.value() || !right.value() || !bottom.value() || !left.value()) |
| return String(); |
| |
| // Important flags must be the same |
| if (top.isImportant() != right.isImportant() || right.isImportant() != bottom.isImportant() || bottom.isImportant() != left.isImportant()) |
| 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(); |
| } |
| |
| 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(); |
| } |
| |
| String StyleProperties::getLayeredShorthandValue(const StylePropertyShorthand& shorthand) const |
| { |
| StringBuilder result; |
| |
| const unsigned size = shorthand.length(); |
| // Begin by collecting the properties into an array. |
| Vector< RefPtr<CSSValue>> values(size); |
| size_t numLayers = 0; |
| |
| for (unsigned i = 0; i < size; ++i) { |
| values[i] = getPropertyCSSValueInternal(shorthand.properties()[i]); |
| if (!values[i]) { |
| // We don't have all longhand properties defined as required for the shorthand |
| // property and thus should not serialize to a shorthand value. See spec at |
| // http://www.w3.org/TR/cssom-1/#serialize-a-css-declaration-block. |
| return String(); |
| } |
| if (values[i]->isBaseValueList()) |
| numLayers = std::max(downcast<CSSValueList>(*values[i]).length(), numLayers); |
| else |
| numLayers = std::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++) { |
| RefPtr<CSSValue> value; |
| if (values[j]) { |
| if (values[j]->isBaseValueList()) |
| value = downcast<CSSValueList>(*values[j]).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 && isPropertyImplicit(shorthand.properties()[j])) |
| || (shorthand.properties()[j] == CSSPropertyWebkitMaskRepeatX && 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)) { |
| RefPtr<CSSValue> yValue; |
| RefPtr<CSSValue> nextValue = values[j + 1]; |
| if (nextValue) { |
| if (is<CSSValueList>(*nextValue)) |
| yValue = downcast<CSSValueList>(*nextValue).itemWithoutBoundsCheck(i); |
| else |
| yValue = nextValue; |
| |
| if (!is<CSSPrimitiveValue>(*value) || !is<CSSPrimitiveValue>(*yValue)) |
| continue; |
| |
| CSSValueID xId = downcast<CSSPrimitiveValue>(*value).valueID(); |
| CSSValueID yId = downcast<CSSPrimitiveValue>(*yValue).valueID(); |
| 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 StyleProperties::getShorthandValue(const StylePropertyShorthand& shorthand) const |
| { |
| String commonValue; |
| StringBuilder result; |
| for (unsigned i = 0; i < shorthand.length(); ++i) { |
| if (!isPropertyImplicit(shorthand.properties()[i])) { |
| RefPtr<CSSValue> value = getPropertyCSSValueInternal(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(); |
| } |
| |
| // only returns a non-null value if all properties have the same, non-null value |
| String StyleProperties::getCommonValue(const StylePropertyShorthand& shorthand) const |
| { |
| String res; |
| bool lastPropertyWasImportant = false; |
| for (unsigned i = 0; i < shorthand.length(); ++i) { |
| RefPtr<CSSValue> value = getPropertyCSSValueInternal(shorthand.properties()[i]); |
| if (!value) |
| return String(); |
| // FIXME: CSSInitialValue::cssText should generate the right value. |
| String text = value->cssText(); |
| if (text.isNull()) |
| return String(); |
| if (res.isNull()) |
| res = text; |
| else if (res != text) |
| return String(); |
| |
| bool currentPropertyIsImportant = propertyIsImportant(shorthand.properties()[i]); |
| if (i && lastPropertyWasImportant != currentPropertyIsImportant) |
| return String(); |
| lastPropertyWasImportant = currentPropertyIsImportant; |
| } |
| return res; |
| } |
| |
| String StyleProperties::getAlignmentShorthandValue(const StylePropertyShorthand& shorthand) const |
| { |
| String value = getCommonValue(shorthand); |
| if (value.isNull() || value.isEmpty()) |
| return getShorthandValue(shorthand); |
| return value; |
| } |
| |
| String StyleProperties::borderPropertyValue(const StylePropertyShorthand& width, const StylePropertyShorthand& style, const StylePropertyShorthand& color) const |
| { |
| const StylePropertyShorthand properties[3] = { width, style, color }; |
| String commonValue; |
| StringBuilder result; |
| for (size_t i = 0; i < WTF_ARRAY_LENGTH(properties); ++i) { |
| String value = getCommonValue(properties[i]); |
| if (value.isNull()) |
| return String(); |
| if (!i) |
| commonValue = value; |
| else if (commonValue != value) |
| commonValue = String(); |
| if (value == "initial") |
| continue; |
| if (!result.isEmpty()) |
| result.append(' '); |
| result.append(value); |
| } |
| if (isInitialOrInherit(commonValue)) |
| return commonValue; |
| return result.toString(); |
| } |
| |
| RefPtr<CSSValue> StyleProperties::getPropertyCSSValue(CSSPropertyID propertyID) const |
| { |
| return getPropertyCSSValueInternal(propertyID); |
| } |
| |
| RefPtr<CSSValue> StyleProperties::getPropertyCSSValueInternal(CSSPropertyID propertyID) const |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) |
| return nullptr; |
| return propertyAt(foundPropertyIndex).value(); |
| } |
| |
| RefPtr<CSSValue> StyleProperties::getCustomPropertyCSSValue(const String& propertyName) const |
| { |
| int foundPropertyIndex = findCustomPropertyIndex(propertyName); |
| if (foundPropertyIndex == -1) |
| return nullptr; |
| return propertyAt(foundPropertyIndex).value(); |
| } |
| |
| bool MutableStyleProperties::removeShorthandProperty(CSSPropertyID propertyID) |
| { |
| StylePropertyShorthand shorthand = shorthandForProperty(propertyID); |
| if (!shorthand.length()) |
| return false; |
| |
| return removePropertiesInSet(shorthand.properties(), shorthand.length()); |
| } |
| |
| bool MutableStyleProperties::removeProperty(CSSPropertyID propertyID, String* returnText) |
| { |
| if (removeShorthandProperty(propertyID)) { |
| // FIXME: Return an equivalent shorthand when possible. |
| if (returnText) |
| *returnText = emptyString(); |
| return true; |
| } |
| |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) { |
| if (returnText) |
| *returnText = emptyString(); |
| return false; |
| } |
| |
| if (returnText) |
| *returnText = propertyAt(foundPropertyIndex).value()->cssText(); |
| |
| // A more efficient removal strategy would involve marking entries as empty |
| // and sweeping them when the vector grows too big. |
| m_propertyVector.remove(foundPropertyIndex); |
| |
| return true; |
| } |
| |
| bool MutableStyleProperties::removeCustomProperty(const String& propertyName, String* returnText) |
| { |
| int foundPropertyIndex = findCustomPropertyIndex(propertyName); |
| if (foundPropertyIndex == -1) { |
| if (returnText) |
| *returnText = emptyString(); |
| return false; |
| } |
| |
| if (returnText) |
| *returnText = propertyAt(foundPropertyIndex).value()->cssText(); |
| |
| // A more efficient removal strategy would involve marking entries as empty |
| // and sweeping them when the vector grows too big. |
| m_propertyVector.remove(foundPropertyIndex); |
| |
| return true; |
| } |
| |
| bool StyleProperties::propertyIsImportant(CSSPropertyID propertyID) const |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex != -1) |
| return propertyAt(foundPropertyIndex).isImportant(); |
| |
| StylePropertyShorthand shorthand = shorthandForProperty(propertyID); |
| if (!shorthand.length()) |
| return false; |
| |
| for (unsigned i = 0; i < shorthand.length(); ++i) { |
| if (!propertyIsImportant(shorthand.properties()[i])) |
| return false; |
| } |
| return true; |
| } |
| |
| bool StyleProperties::customPropertyIsImportant(const String& propertyName) const |
| { |
| int foundPropertyIndex = findCustomPropertyIndex(propertyName); |
| if (foundPropertyIndex != -1) |
| return propertyAt(foundPropertyIndex).isImportant(); |
| return false; |
| } |
| |
| String StyleProperties::getPropertyShorthand(CSSPropertyID propertyID) const |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) |
| return String(); |
| return getPropertyNameString(propertyAt(foundPropertyIndex).shorthandID()); |
| } |
| |
| bool StyleProperties::isPropertyImplicit(CSSPropertyID propertyID) const |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) |
| return false; |
| return propertyAt(foundPropertyIndex).isImplicit(); |
| } |
| |
| bool MutableStyleProperties::setProperty(CSSPropertyID propertyID, const String& value, bool important, CSSParserContext parserContext) |
| { |
| if (!isEnabledCSSProperty(propertyID)) |
| return false; |
| |
| // Setting the value to an empty string just removes the property in both IE and Gecko. |
| // Setting it to null seems to produce less consistent results, but we treat it just the same. |
| if (value.isEmpty()) |
| return removeProperty(propertyID); |
| |
| parserContext.mode = cssParserMode(); |
| |
| // When replacing an existing property value, this moves the property to the end of the list. |
| // Firefox preserves the position, and MSIE moves the property to the beginning. |
| return CSSParser::parseValue(*this, propertyID, value, important, parserContext) == CSSParser::ParseResult::Changed; |
| } |
| |
| bool MutableStyleProperties::setProperty(CSSPropertyID propertyID, const String& value, bool important) |
| { |
| CSSParserContext parserContext(cssParserMode()); |
| return setProperty(propertyID, value, important, parserContext); |
| } |
| |
| bool MutableStyleProperties::setCustomProperty(const Document* document, const String& propertyName, const String& value, bool important, CSSParserContext parserContext) |
| { |
| // Setting the value to an empty string just removes the property in both IE and Gecko. |
| // Setting it to null seems to produce less consistent results, but we treat it just the same. |
| if (value.isEmpty()) |
| return removeCustomProperty(propertyName); |
| |
| parserContext.mode = cssParserMode(); |
| |
| String syntax = "*"; |
| auto* registered = document ? document->getCSSRegisteredCustomPropertySet().get(propertyName) : nullptr; |
| |
| if (registered) |
| syntax = registered->syntax; |
| |
| CSSTokenizer tokenizer(value); |
| if (!CSSPropertyParser::canParseTypedCustomPropertyValue(syntax, tokenizer.tokenRange(), parserContext)) |
| return false; |
| |
| // When replacing an existing property value, this moves the property to the end of the list. |
| // Firefox preserves the position, and MSIE moves the property to the beginning. |
| return CSSParser::parseCustomPropertyValue(*this, propertyName, value, important, parserContext) == CSSParser::ParseResult::Changed; |
| } |
| |
| void MutableStyleProperties::setProperty(CSSPropertyID propertyID, RefPtr<CSSValue>&& value, bool important) |
| { |
| StylePropertyShorthand shorthand = shorthandForProperty(propertyID); |
| if (!shorthand.length()) { |
| setProperty(CSSProperty(propertyID, WTFMove(value), important)); |
| return; |
| } |
| |
| removePropertiesInSet(shorthand.properties(), shorthand.length()); |
| |
| for (unsigned i = 0; i < shorthand.length(); ++i) |
| m_propertyVector.append(CSSProperty(shorthand.properties()[i], value.copyRef(), important)); |
| } |
| |
| bool MutableStyleProperties::setProperty(const CSSProperty& property, CSSProperty* slot) |
| { |
| if (!removeShorthandProperty(property.id())) { |
| CSSProperty* toReplace = slot; |
| if (!slot) { |
| if (property.id() == CSSPropertyCustom) { |
| if (property.value()) |
| toReplace = findCustomCSSPropertyWithName(downcast<CSSCustomPropertyValue>(*property.value()).name()); |
| } else |
| toReplace = findCSSPropertyWithID(property.id()); |
| } |
| |
| if (toReplace) { |
| if (*toReplace == property) |
| return false; |
| |
| *toReplace = property; |
| return true; |
| } |
| } |
| |
| m_propertyVector.append(property); |
| return true; |
| } |
| |
| bool MutableStyleProperties::setProperty(CSSPropertyID propertyID, CSSValueID identifier, bool important) |
| { |
| return setProperty(CSSProperty(propertyID, CSSValuePool::singleton().createIdentifierValue(identifier), important)); |
| } |
| |
| bool MutableStyleProperties::setProperty(CSSPropertyID propertyID, CSSPropertyID identifier, bool important) |
| { |
| return setProperty(CSSProperty(propertyID, CSSValuePool::singleton().createIdentifierValue(identifier), important)); |
| } |
| |
| bool MutableStyleProperties::parseDeclaration(const String& styleDeclaration, CSSParserContext context) |
| { |
| auto oldProperties = WTFMove(m_propertyVector); |
| m_propertyVector.clear(); |
| |
| context.mode = cssParserMode(); |
| |
| CSSParser parser(context); |
| parser.parseDeclaration(*this, styleDeclaration); |
| |
| // We could do better. Just changing property order does not require style invalidation. |
| return oldProperties != m_propertyVector; |
| } |
| |
| bool MutableStyleProperties::addParsedProperties(const ParsedPropertyVector& properties) |
| { |
| bool anyChanged = false; |
| m_propertyVector.reserveCapacity(m_propertyVector.size() + properties.size()); |
| for (const auto& property : properties) { |
| if (addParsedProperty(property)) |
| anyChanged = true; |
| } |
| |
| return anyChanged; |
| } |
| |
| bool MutableStyleProperties::addParsedProperty(const CSSProperty& property) |
| { |
| if (property.id() == CSSPropertyCustom) { |
| if ((property.value() && !customPropertyIsImportant(downcast<CSSCustomPropertyValue>(*property.value()).name())) || property.isImportant()) |
| return setProperty(property); |
| return false; |
| } |
| return setProperty(property); |
| } |
| |
| String StyleProperties::asText() const |
| { |
| StringBuilder result; |
| |
| int positionXPropertyIndex = -1; |
| int positionYPropertyIndex = -1; |
| int repeatXPropertyIndex = -1; |
| int repeatYPropertyIndex = -1; |
| |
| std::bitset<numCSSProperties> shorthandPropertyUsed; |
| std::bitset<numCSSProperties> shorthandPropertyAppeared; |
| |
| unsigned size = propertyCount(); |
| unsigned numDecls = 0; |
| for (unsigned n = 0; n < size; ++n) { |
| PropertyReference property = propertyAt(n); |
| CSSPropertyID propertyID = property.id(); |
| CSSPropertyID shorthandPropertyID = CSSPropertyInvalid; |
| CSSPropertyID borderFallbackShorthandProperty = CSSPropertyInvalid; |
| CSSPropertyID borderBlockFallbackShorthandProperty = CSSPropertyInvalid; |
| CSSPropertyID borderInlineFallbackShorthandProperty = CSSPropertyInvalid; |
| String value; |
| auto serializeBorderShorthand = [&] (const CSSPropertyID borderProperty, const CSSPropertyID fallbackProperty) { |
| // FIXME: Deal with cases where only some of border sides are specified. |
| ASSERT(borderProperty - firstCSSProperty < static_cast<CSSPropertyID>(shorthandPropertyAppeared.size())); |
| if (!shorthandPropertyAppeared[borderProperty - firstCSSProperty] && isEnabledCSSProperty(borderProperty)) { |
| value = getPropertyValue(borderProperty); |
| if (value.isNull()) |
| shorthandPropertyAppeared.set(borderProperty - firstCSSProperty); |
| else |
| shorthandPropertyID = borderProperty; |
| } else if (shorthandPropertyUsed[borderProperty - firstCSSProperty]) |
| shorthandPropertyID = borderProperty; |
| if (!shorthandPropertyID) |
| shorthandPropertyID = fallbackProperty; |
| }; |
| |
| if (property.value() && property.value()->isPendingSubstitutionValue()) { |
| auto& substitutionValue = downcast<CSSPendingSubstitutionValue>(*property.value()); |
| shorthandPropertyID = substitutionValue.shorthandPropertyId(); |
| value = substitutionValue.shorthandValue()->cssText(); |
| } else { |
| switch (propertyID) { |
| case CSSPropertyAnimationName: |
| case CSSPropertyAnimationDuration: |
| case CSSPropertyAnimationTimingFunction: |
| case CSSPropertyAnimationDelay: |
| case CSSPropertyAnimationIterationCount: |
| case CSSPropertyAnimationDirection: |
| case CSSPropertyAnimationFillMode: |
| case CSSPropertyAnimationPlayState: |
| shorthandPropertyID = CSSPropertyAnimation; |
| break; |
| case CSSPropertyBackgroundPositionX: |
| positionXPropertyIndex = n; |
| continue; |
| case CSSPropertyBackgroundPositionY: |
| positionYPropertyIndex = n; |
| continue; |
| case CSSPropertyBackgroundRepeatX: |
| repeatXPropertyIndex = n; |
| continue; |
| case CSSPropertyBackgroundRepeatY: |
| repeatYPropertyIndex = n; |
| continue; |
| case CSSPropertyBorderTopWidth: |
| case CSSPropertyBorderRightWidth: |
| case CSSPropertyBorderBottomWidth: |
| case CSSPropertyBorderLeftWidth: |
| if (!borderFallbackShorthandProperty) |
| borderFallbackShorthandProperty = CSSPropertyBorderWidth; |
| FALLTHROUGH; |
| case CSSPropertyBorderTopStyle: |
| case CSSPropertyBorderRightStyle: |
| case CSSPropertyBorderBottomStyle: |
| case CSSPropertyBorderLeftStyle: |
| if (!borderFallbackShorthandProperty) |
| borderFallbackShorthandProperty = CSSPropertyBorderStyle; |
| FALLTHROUGH; |
| case CSSPropertyBorderTopColor: |
| case CSSPropertyBorderRightColor: |
| case CSSPropertyBorderBottomColor: |
| case CSSPropertyBorderLeftColor: |
| if (!borderFallbackShorthandProperty) |
| borderFallbackShorthandProperty = CSSPropertyBorderColor; |
| serializeBorderShorthand(CSSPropertyBorder, borderFallbackShorthandProperty); |
| break; |
| case CSSPropertyBorderBlockStartWidth: |
| case CSSPropertyBorderBlockEndWidth: |
| if (!borderBlockFallbackShorthandProperty) |
| borderBlockFallbackShorthandProperty = CSSPropertyBorderBlockWidth; |
| FALLTHROUGH; |
| case CSSPropertyBorderBlockStartStyle: |
| case CSSPropertyBorderBlockEndStyle: |
| if (!borderBlockFallbackShorthandProperty) |
| borderBlockFallbackShorthandProperty = CSSPropertyBorderBlockStyle; |
| FALLTHROUGH; |
| case CSSPropertyBorderBlockStartColor: |
| case CSSPropertyBorderBlockEndColor: |
| if (!borderBlockFallbackShorthandProperty) |
| borderBlockFallbackShorthandProperty = CSSPropertyBorderBlockColor; |
| serializeBorderShorthand(CSSPropertyBorderBlock, borderBlockFallbackShorthandProperty); |
| break; |
| case CSSPropertyBorderInlineStartWidth: |
| case CSSPropertyBorderInlineEndWidth: |
| if (!borderInlineFallbackShorthandProperty) |
| borderInlineFallbackShorthandProperty = CSSPropertyBorderInlineWidth; |
| FALLTHROUGH; |
| case CSSPropertyBorderInlineStartStyle: |
| case CSSPropertyBorderInlineEndStyle: |
| if (!borderInlineFallbackShorthandProperty) |
| borderInlineFallbackShorthandProperty = CSSPropertyBorderInlineStyle; |
| FALLTHROUGH; |
| case CSSPropertyBorderInlineStartColor: |
| case CSSPropertyBorderInlineEndColor: |
| if (!borderInlineFallbackShorthandProperty) |
| borderInlineFallbackShorthandProperty = CSSPropertyBorderInlineColor; |
| serializeBorderShorthand(CSSPropertyBorderInline, borderInlineFallbackShorthandProperty); |
| break; |
| case CSSPropertyWebkitBorderHorizontalSpacing: |
| case CSSPropertyWebkitBorderVerticalSpacing: |
| shorthandPropertyID = CSSPropertyBorderSpacing; |
| break; |
| case CSSPropertyFontFamily: |
| case CSSPropertyLineHeight: |
| case CSSPropertyFontSize: |
| case CSSPropertyFontStyle: |
| case CSSPropertyFontVariantCaps: |
| case CSSPropertyFontWeight: |
| // Don't use CSSPropertyFont because old UAs can't recognize them but are important for editing. |
| break; |
| case CSSPropertyTop: |
| case CSSPropertyRight: |
| case CSSPropertyBottom: |
| case CSSPropertyLeft: |
| shorthandPropertyID = CSSPropertyInset; |
| break; |
| case CSSPropertyInsetBlockStart: |
| case CSSPropertyInsetBlockEnd: |
| shorthandPropertyID = CSSPropertyInsetBlock; |
| break; |
| case CSSPropertyInsetInlineStart: |
| case CSSPropertyInsetInlineEnd: |
| shorthandPropertyID = CSSPropertyInsetInline; |
| break; |
| case CSSPropertyListStyleType: |
| case CSSPropertyListStylePosition: |
| case CSSPropertyListStyleImage: |
| shorthandPropertyID = CSSPropertyListStyle; |
| break; |
| case CSSPropertyMarginTop: |
| case CSSPropertyMarginRight: |
| case CSSPropertyMarginBottom: |
| case CSSPropertyMarginLeft: |
| shorthandPropertyID = CSSPropertyMargin; |
| break; |
| case CSSPropertyMarginBlockStart: |
| case CSSPropertyMarginBlockEnd: |
| shorthandPropertyID = CSSPropertyMarginBlock; |
| break; |
| case CSSPropertyMarginInlineStart: |
| case CSSPropertyMarginInlineEnd: |
| shorthandPropertyID = CSSPropertyMarginInline; |
| 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 CSSPropertyPaddingBlockStart: |
| case CSSPropertyPaddingBlockEnd: |
| shorthandPropertyID = CSSPropertyPaddingBlock; |
| break; |
| case CSSPropertyPaddingInlineStart: |
| case CSSPropertyPaddingInlineEnd: |
| shorthandPropertyID = CSSPropertyPaddingInline; |
| break; |
| #if ENABLE(CSS_SCROLL_SNAP) |
| case CSSPropertyScrollPaddingTop: |
| case CSSPropertyScrollPaddingRight: |
| case CSSPropertyScrollPaddingBottom: |
| case CSSPropertyScrollPaddingLeft: |
| shorthandPropertyID = CSSPropertyScrollPadding; |
| break; |
| case CSSPropertyScrollSnapMarginTop: |
| case CSSPropertyScrollSnapMarginRight: |
| case CSSPropertyScrollSnapMarginBottom: |
| case CSSPropertyScrollSnapMarginLeft: |
| shorthandPropertyID = CSSPropertyScrollSnapMargin; |
| break; |
| #endif |
| case CSSPropertyTransitionProperty: |
| case CSSPropertyTransitionDuration: |
| case CSSPropertyTransitionTimingFunction: |
| case CSSPropertyTransitionDelay: |
| shorthandPropertyID = CSSPropertyTransition; |
| 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 CSSPropertyPerspectiveOriginX: |
| case CSSPropertyPerspectiveOriginY: |
| shorthandPropertyID = CSSPropertyPerspectiveOrigin; |
| break; |
| case CSSPropertyTransformOriginX: |
| case CSSPropertyTransformOriginY: |
| case CSSPropertyTransformOriginZ: |
| shorthandPropertyID = CSSPropertyTransformOrigin; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| unsigned shortPropertyIndex = shorthandPropertyID - firstCSSProperty; |
| if (shorthandPropertyID && isEnabledCSSProperty(shorthandPropertyID)) { |
| ASSERT(shortPropertyIndex < shorthandPropertyUsed.size()); |
| if (shorthandPropertyUsed[shortPropertyIndex]) |
| continue; |
| if (!shorthandPropertyAppeared[shortPropertyIndex] && value.isNull()) |
| value = getPropertyValue(shorthandPropertyID); |
| shorthandPropertyAppeared.set(shortPropertyIndex); |
| } |
| |
| if (!value.isNull()) { |
| propertyID = shorthandPropertyID; |
| shorthandPropertyUsed.set(shortPropertyIndex); |
| } else |
| value = property.value()->cssText(); |
| |
| if (propertyID != CSSPropertyCustom && value == "initial" && !CSSProperty::isInheritedProperty(propertyID)) |
| continue; |
| |
| if (numDecls++) |
| result.append(' '); |
| |
| if (propertyID == CSSPropertyCustom) |
| result.append(downcast<CSSCustomPropertyValue>(*property.value()).name()); |
| else |
| result.append(getPropertyName(propertyID)); |
| |
| result.appendLiteral(": "); |
| result.append(value); |
| if (property.isImportant()) |
| result.appendLiteral(" !important"); |
| result.append(';'); |
| } |
| |
| // 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 (positionXPropertyIndex != -1 && positionYPropertyIndex != -1 && propertyAt(positionXPropertyIndex).isImportant() == propertyAt(positionYPropertyIndex).isImportant()) { |
| PropertyReference positionXProperty = propertyAt(positionXPropertyIndex); |
| PropertyReference positionYProperty = propertyAt(positionYPropertyIndex); |
| |
| if (numDecls++) |
| result.append(' '); |
| result.appendLiteral("background-position: "); |
| if (positionXProperty.value()->isValueList() || positionYProperty.value()->isValueList()) |
| result.append(getLayeredShorthandValue(backgroundPositionShorthand())); |
| else { |
| result.append(positionXProperty.value()->cssText()); |
| result.append(' '); |
| result.append(positionYProperty.value()->cssText()); |
| } |
| if (positionXProperty.isImportant()) |
| result.appendLiteral(" !important"); |
| result.append(';'); |
| } else { |
| if (positionXPropertyIndex != -1) { |
| if (numDecls++) |
| result.append(' '); |
| result.append(propertyAt(positionXPropertyIndex).cssText()); |
| } |
| if (positionYPropertyIndex != -1) { |
| if (numDecls++) |
| result.append(' '); |
| result.append(propertyAt(positionYPropertyIndex).cssText()); |
| } |
| } |
| |
| // FIXME: We need to do the same for background-repeat. |
| if (repeatXPropertyIndex != -1 && repeatYPropertyIndex != -1 && propertyAt(repeatXPropertyIndex).isImportant() == propertyAt(repeatYPropertyIndex).isImportant()) { |
| PropertyReference repeatXProperty = propertyAt(repeatXPropertyIndex); |
| PropertyReference repeatYProperty = propertyAt(repeatYPropertyIndex); |
| |
| if (numDecls++) |
| result.append(' '); |
| result.appendLiteral("background-repeat: "); |
| if (repeatXProperty.value()->isValueList() || repeatYProperty.value()->isValueList()) |
| result.append(getLayeredShorthandValue(backgroundRepeatShorthand())); |
| else { |
| result.append(repeatXProperty.value()->cssText()); |
| result.append(' '); |
| result.append(repeatYProperty.value()->cssText()); |
| } |
| if (repeatXProperty.isImportant()) |
| result.appendLiteral(" !important"); |
| result.append(';'); |
| } else { |
| if (repeatXPropertyIndex != -1) { |
| if (numDecls++) |
| result.append(' '); |
| result.append(propertyAt(repeatXPropertyIndex).cssText()); |
| } |
| if (repeatYPropertyIndex != -1) { |
| if (numDecls++) |
| result.append(' '); |
| result.append(propertyAt(repeatYPropertyIndex).cssText()); |
| } |
| } |
| |
| ASSERT(!numDecls ^ !result.isEmpty()); |
| return result.toString(); |
| } |
| |
| bool StyleProperties::hasCSSOMWrapper() const |
| { |
| return is<MutableStyleProperties>(*this) && downcast<MutableStyleProperties>(*this).m_cssomWrapper; |
| } |
| |
| void MutableStyleProperties::mergeAndOverrideOnConflict(const StyleProperties& other) |
| { |
| unsigned size = other.propertyCount(); |
| for (unsigned i = 0; i < size; ++i) |
| addParsedProperty(other.propertyAt(i).toCSSProperty()); |
| } |
| |
| bool StyleProperties::traverseSubresources(const WTF::Function<bool (const CachedResource&)>& handler) const |
| { |
| unsigned size = propertyCount(); |
| for (unsigned i = 0; i < size; ++i) { |
| if (propertyAt(i).value()->traverseSubresources(handler)) |
| return true; |
| } |
| return false; |
| } |
| |
| // This is the list of properties we want to copy in the copyBlockProperties() function. |
| // It is the list of CSS properties that apply specially to block-level elements. |
| static const CSSPropertyID blockProperties[] = { |
| CSSPropertyOrphans, |
| CSSPropertyOverflow, // This can be also be applied to replaced elements |
| CSSPropertyWebkitAspectRatio, |
| CSSPropertyColumnCount, |
| CSSPropertyColumnGap, |
| CSSPropertyRowGap, |
| CSSPropertyColumnRuleColor, |
| CSSPropertyColumnRuleStyle, |
| CSSPropertyColumnRuleWidth, |
| CSSPropertyWebkitColumnBreakBefore, |
| CSSPropertyWebkitColumnBreakAfter, |
| CSSPropertyWebkitColumnBreakInside, |
| CSSPropertyColumnWidth, |
| CSSPropertyPageBreakAfter, |
| CSSPropertyPageBreakBefore, |
| CSSPropertyPageBreakInside, |
| CSSPropertyTextAlign, |
| #if ENABLE(CSS3_TEXT) |
| CSSPropertyWebkitTextAlignLast, |
| CSSPropertyWebkitTextJustify, |
| #endif // CSS3_TEXT |
| CSSPropertyTextIndent, |
| CSSPropertyWidows |
| }; |
| |
| void MutableStyleProperties::clear() |
| { |
| m_propertyVector.clear(); |
| } |
| |
| const unsigned numBlockProperties = WTF_ARRAY_LENGTH(blockProperties); |
| |
| Ref<MutableStyleProperties> StyleProperties::copyBlockProperties() const |
| { |
| return copyPropertiesInSet(blockProperties, numBlockProperties); |
| } |
| |
| void MutableStyleProperties::removeBlockProperties() |
| { |
| removePropertiesInSet(blockProperties, numBlockProperties); |
| } |
| |
| bool MutableStyleProperties::removePropertiesInSet(const CSSPropertyID* set, unsigned length) |
| { |
| if (m_propertyVector.isEmpty()) |
| return false; |
| |
| // FIXME: This is always used with static sets and in that case constructing the hash repeatedly is pretty pointless. |
| HashSet<CSSPropertyID> toRemove; |
| for (unsigned i = 0; i < length; ++i) |
| toRemove.add(set[i]); |
| |
| return m_propertyVector.removeAllMatching([&toRemove] (const CSSProperty& property) { |
| return toRemove.contains(property.id()); |
| }) > 0; |
| } |
| |
| int ImmutableStyleProperties::findPropertyIndex(CSSPropertyID propertyID) const |
| { |
| // Convert here propertyID into an uint16_t to compare it with the metadata's m_propertyID to avoid |
| // the compiler converting it to an int multiple times in the loop. |
| uint16_t id = static_cast<uint16_t>(propertyID); |
| for (int n = m_arraySize - 1 ; n >= 0; --n) { |
| if (metadataArray()[n].m_propertyID == id) |
| return n; |
| } |
| |
| return -1; |
| } |
| |
| int MutableStyleProperties::findPropertyIndex(CSSPropertyID propertyID) const |
| { |
| // Convert here propertyID into an uint16_t to compare it with the metadata's m_propertyID to avoid |
| // the compiler converting it to an int multiple times in the loop. |
| uint16_t id = static_cast<uint16_t>(propertyID); |
| for (int n = m_propertyVector.size() - 1 ; n >= 0; --n) { |
| if (m_propertyVector.at(n).metadata().m_propertyID == id) |
| return n; |
| } |
| |
| return -1; |
| } |
| |
| int ImmutableStyleProperties::findCustomPropertyIndex(const String& propertyName) const |
| { |
| // Convert the propertyID into an uint16_t to compare it with the metadata's m_propertyID to avoid |
| // the compiler converting it to an int multiple times in the loop. |
| for (int n = m_arraySize - 1 ; n >= 0; --n) { |
| if (metadataArray()[n].m_propertyID == CSSPropertyCustom) { |
| // We found a custom property. See if the name matches. |
| if (!valueArray()[n]) |
| continue; |
| if (downcast<CSSCustomPropertyValue>(*valueArray()[n]).name() == propertyName) |
| return n; |
| } |
| } |
| |
| return -1; |
| } |
| |
| int MutableStyleProperties::findCustomPropertyIndex(const String& propertyName) const |
| { |
| // Convert the propertyID into an uint16_t to compare it with the metadata's m_propertyID to avoid |
| // the compiler converting it to an int multiple times in the loop. |
| for (int n = m_propertyVector.size() - 1 ; n >= 0; --n) { |
| if (m_propertyVector.at(n).metadata().m_propertyID == CSSPropertyCustom) { |
| // We found a custom property. See if the name matches. |
| if (!m_propertyVector.at(n).value()) |
| continue; |
| if (downcast<CSSCustomPropertyValue>(*m_propertyVector.at(n).value()).name() == propertyName) |
| return n; |
| } |
| } |
| |
| return -1; |
| } |
| |
| CSSProperty* MutableStyleProperties::findCSSPropertyWithID(CSSPropertyID propertyID) |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) |
| return 0; |
| return &m_propertyVector.at(foundPropertyIndex); |
| } |
| |
| CSSProperty* MutableStyleProperties::findCustomCSSPropertyWithName(const String& propertyName) |
| { |
| int foundPropertyIndex = findCustomPropertyIndex(propertyName); |
| if (foundPropertyIndex == -1) |
| return 0; |
| return &m_propertyVector.at(foundPropertyIndex); |
| } |
| |
| bool StyleProperties::propertyMatches(CSSPropertyID propertyID, const CSSValue* propertyValue) const |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) |
| return false; |
| return propertyAt(foundPropertyIndex).value()->equals(*propertyValue); |
| } |
| |
| Ref<MutableStyleProperties> StyleProperties::mutableCopy() const |
| { |
| return adoptRef(*new MutableStyleProperties(*this)); |
| } |
| |
| Ref<MutableStyleProperties> StyleProperties::copyPropertiesInSet(const CSSPropertyID* set, unsigned length) const |
| { |
| Vector<CSSProperty, 256> list; |
| list.reserveInitialCapacity(length); |
| for (unsigned i = 0; i < length; ++i) { |
| if (auto value = getPropertyCSSValueInternal(set[i])) |
| list.uncheckedAppend(CSSProperty(set[i], WTFMove(value), false)); |
| } |
| return MutableStyleProperties::create(list.data(), list.size()); |
| } |
| |
| PropertySetCSSStyleDeclaration* MutableStyleProperties::cssStyleDeclaration() |
| { |
| return m_cssomWrapper.get(); |
| } |
| |
| CSSStyleDeclaration& MutableStyleProperties::ensureCSSStyleDeclaration() |
| { |
| if (m_cssomWrapper) { |
| ASSERT(!static_cast<CSSStyleDeclaration*>(m_cssomWrapper.get())->parentRule()); |
| ASSERT(!m_cssomWrapper->parentElement()); |
| return *m_cssomWrapper; |
| } |
| m_cssomWrapper = std::make_unique<PropertySetCSSStyleDeclaration>(*this); |
| return *m_cssomWrapper; |
| } |
| |
| CSSStyleDeclaration& MutableStyleProperties::ensureInlineCSSStyleDeclaration(StyledElement& parentElement) |
| { |
| if (m_cssomWrapper) { |
| ASSERT(m_cssomWrapper->parentElement() == &parentElement); |
| return *m_cssomWrapper; |
| } |
| m_cssomWrapper = std::make_unique<InlineCSSStyleDeclaration>(*this, parentElement); |
| return *m_cssomWrapper; |
| } |
| |
| unsigned StyleProperties::averageSizeInBytes() |
| { |
| // Please update this if the storage scheme changes so that this longer reflects the actual size. |
| return sizeForImmutableStylePropertiesWithPropertyCount(4); |
| } |
| |
| // See the function above if you need to update this. |
| struct SameSizeAsStyleProperties : public RefCounted<SameSizeAsStyleProperties> { |
| unsigned bitfield; |
| }; |
| COMPILE_ASSERT(sizeof(StyleProperties) == sizeof(SameSizeAsStyleProperties), style_property_set_should_stay_small); |
| |
| #ifndef NDEBUG |
| void StyleProperties::showStyle() |
| { |
| fprintf(stderr, "%s\n", asText().ascii().data()); |
| } |
| #endif |
| |
| Ref<MutableStyleProperties> MutableStyleProperties::create(CSSParserMode cssParserMode) |
| { |
| return adoptRef(*new MutableStyleProperties(cssParserMode)); |
| } |
| |
| Ref<MutableStyleProperties> MutableStyleProperties::create(const CSSProperty* properties, unsigned count) |
| { |
| return adoptRef(*new MutableStyleProperties(properties, count)); |
| } |
| |
| String StyleProperties::PropertyReference::cssName() const |
| { |
| if (id() == CSSPropertyCustom) |
| return downcast<CSSCustomPropertyValue>(*value()).name(); |
| return getPropertyNameString(id()); |
| } |
| |
| String StyleProperties::PropertyReference::cssText() const |
| { |
| StringBuilder result; |
| result.append(cssName()); |
| result.appendLiteral(": "); |
| result.append(m_value->cssText()); |
| if (isImportant()) |
| result.appendLiteral(" !important"); |
| result.append(';'); |
| return result.toString(); |
| } |
| |
| Ref<DeferredStyleProperties> DeferredStyleProperties::create(const CSSParserTokenRange& tokenRange, CSSDeferredParser& parser) |
| { |
| return adoptRef(*new DeferredStyleProperties(tokenRange, parser)); |
| } |
| |
| DeferredStyleProperties::DeferredStyleProperties(const CSSParserTokenRange& range, CSSDeferredParser& parser) |
| : StylePropertiesBase(parser.mode(), DeferredPropertiesType) |
| , m_parser(parser) |
| { |
| size_t length = range.end() - range.begin(); |
| m_tokens.reserveCapacity(length); |
| m_tokens.append(range.begin(), length); |
| } |
| |
| DeferredStyleProperties::~DeferredStyleProperties() = default; |
| |
| Ref<ImmutableStyleProperties> DeferredStyleProperties::parseDeferredProperties() |
| { |
| return m_parser->parseDeclaration(m_tokens); |
| } |
| |
| } // namespace WebCore |
