| /* |
| * (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 "sky/engine/core/css/StylePropertySet.h" |
| |
| #include "gen/sky/core/StylePropertyShorthand.h" |
| #include "gen/sky/platform/RuntimeEnabledFeatures.h" |
| #include "sky/engine/core/css/CSSPropertyMetadata.h" |
| #include "sky/engine/core/css/CSSValuePool.h" |
| #include "sky/engine/core/css/StylePropertySerializer.h" |
| #include "sky/engine/core/css/StyleSheetContents.h" |
| #include "sky/engine/core/css/parser/BisonCSSParser.h" |
| #include "sky/engine/wtf/text/StringBuilder.h" |
| |
| #ifndef NDEBUG |
| #include <stdio.h> |
| #include "sky/engine/wtf/text/CString.h" |
| #endif |
| |
| namespace blink { |
| |
| static size_t sizeForImmutableStylePropertySetWithPropertyCount(unsigned count) |
| { |
| return sizeof(ImmutableStylePropertySet) - sizeof(void*) + sizeof(CSSValue*) * count + sizeof(StylePropertyMetadata) * count; |
| } |
| |
| PassRefPtr<ImmutableStylePropertySet> ImmutableStylePropertySet::create(const CSSProperty* properties, unsigned count, CSSParserMode cssParserMode) |
| { |
| ASSERT(count <= MaxArraySize); |
| void* slot = WTF::fastMalloc(sizeForImmutableStylePropertySetWithPropertyCount(count)); |
| return adoptRef(new (slot) ImmutableStylePropertySet(properties, count, cssParserMode)); |
| } |
| |
| PassRefPtr<ImmutableStylePropertySet> StylePropertySet::immutableCopyIfNeeded() const |
| { |
| if (!isMutable()) |
| return toImmutableStylePropertySet(const_cast<StylePropertySet*>(this)); |
| const MutableStylePropertySet* mutableThis = toMutableStylePropertySet(this); |
| return ImmutableStylePropertySet::create(mutableThis->m_propertyVector.data(), mutableThis->m_propertyVector.size(), cssParserMode()); |
| } |
| |
| MutableStylePropertySet::MutableStylePropertySet(CSSParserMode cssParserMode) |
| : StylePropertySet(cssParserMode) |
| { |
| } |
| |
| MutableStylePropertySet::MutableStylePropertySet(const CSSProperty* properties, unsigned length) |
| : StylePropertySet(HTMLStandardMode) |
| { |
| m_propertyVector.reserveInitialCapacity(length); |
| for (unsigned i = 0; i < length; ++i) |
| m_propertyVector.uncheckedAppend(properties[i]); |
| } |
| |
| ImmutableStylePropertySet::ImmutableStylePropertySet(const CSSProperty* properties, unsigned length, CSSParserMode cssParserMode) |
| : StylePropertySet(cssParserMode, length) |
| { |
| StylePropertyMetadata* metadataArray = const_cast<StylePropertyMetadata*>(this->metadataArray()); |
| RawPtr<CSSValue>* valueArray = const_cast<RawPtr<CSSValue>*>(this->valueArray()); |
| for (unsigned i = 0; i < m_arraySize; ++i) { |
| metadataArray[i] = properties[i].metadata(); |
| valueArray[i] = properties[i].value(); |
| #if !ENABLE(OILPAN) |
| valueArray[i]->ref(); |
| #endif |
| } |
| } |
| |
| ImmutableStylePropertySet::~ImmutableStylePropertySet() |
| { |
| #if !ENABLE(OILPAN) |
| RawPtr<CSSValue>* valueArray = const_cast<RawPtr<CSSValue>*>(this->valueArray()); |
| for (unsigned i = 0; i < m_arraySize; ++i) |
| valueArray[i]->deref(); |
| #endif |
| } |
| |
| int ImmutableStylePropertySet::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) { |
| // Only enabled or internal properties should be part of the style. |
| ASSERT(CSSPropertyMetadata::isEnabledProperty(propertyID) || isInternalProperty(propertyID)); |
| return n; |
| } |
| } |
| |
| return -1; |
| } |
| |
| MutableStylePropertySet::MutableStylePropertySet(const StylePropertySet& other) |
| : StylePropertySet(other.cssParserMode()) |
| { |
| if (other.isMutable()) { |
| m_propertyVector = toMutableStylePropertySet(other).m_propertyVector; |
| } else { |
| m_propertyVector.reserveInitialCapacity(other.propertyCount()); |
| for (unsigned i = 0; i < other.propertyCount(); ++i) |
| m_propertyVector.uncheckedAppend(other.propertyAt(i).toCSSProperty()); |
| } |
| } |
| |
| String StylePropertySet::getPropertyValue(CSSPropertyID propertyID) const |
| { |
| RefPtr<CSSValue> value = getPropertyCSSValue(propertyID); |
| if (value) |
| return value->cssText(); |
| |
| return StylePropertySerializer(*this).getPropertyValue(propertyID); |
| } |
| |
| PassRefPtr<CSSValue> StylePropertySet::getPropertyCSSValue(CSSPropertyID propertyID) const |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) |
| return nullptr; |
| return propertyAt(foundPropertyIndex).value(); |
| } |
| |
| bool MutableStylePropertySet::removeShorthandProperty(CSSPropertyID propertyID) |
| { |
| StylePropertyShorthand shorthand = shorthandForProperty(propertyID); |
| if (!shorthand.length()) |
| return false; |
| |
| return removePropertiesInSet(shorthand.properties(), shorthand.length()); |
| } |
| |
| bool MutableStylePropertySet::removeProperty(CSSPropertyID propertyID, String* returnText) |
| { |
| if (removeShorthandProperty(propertyID)) { |
| // FIXME: Return an equivalent shorthand when possible. |
| if (returnText) |
| *returnText = ""; |
| return true; |
| } |
| |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) { |
| if (returnText) |
| *returnText = ""; |
| 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; |
| } |
| |
| CSSPropertyID StylePropertySet::getPropertyShorthand(CSSPropertyID propertyID) const |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) |
| return CSSPropertyInvalid; |
| return propertyAt(foundPropertyIndex).shorthandID(); |
| } |
| |
| bool StylePropertySet::isPropertyImplicit(CSSPropertyID propertyID) const |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) |
| return false; |
| return propertyAt(foundPropertyIndex).isImplicit(); |
| } |
| |
| bool MutableStylePropertySet::setProperty(CSSPropertyID propertyID, const String& value, StyleSheetContents* contextStyleSheet) |
| { |
| // 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); |
| |
| // 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 BisonCSSParser::parseValue(this, propertyID, value, cssParserMode(), contextStyleSheet); |
| } |
| |
| void MutableStylePropertySet::setProperty(CSSPropertyID propertyID, PassRefPtr<CSSValue> prpValue) |
| { |
| StylePropertyShorthand shorthand = shorthandForProperty(propertyID); |
| if (!shorthand.length()) { |
| setProperty(CSSProperty(propertyID, prpValue)); |
| return; |
| } |
| |
| removePropertiesInSet(shorthand.properties(), shorthand.length()); |
| |
| RefPtr<CSSValue> value = prpValue; |
| for (unsigned i = 0; i < shorthand.length(); ++i) |
| m_propertyVector.append(CSSProperty(shorthand.properties()[i], value)); |
| } |
| |
| void MutableStylePropertySet::setProperty(const CSSProperty& property, CSSProperty* slot) |
| { |
| if (!removeShorthandProperty(property.id())) { |
| CSSProperty* toReplace = slot ? slot : findCSSPropertyWithID(property.id()); |
| if (toReplace) { |
| *toReplace = property; |
| return; |
| } |
| } |
| appendProperty(property); |
| } |
| |
| void MutableStylePropertySet::appendProperty(const CSSProperty& property) |
| { |
| m_propertyVector.append(property); |
| } |
| |
| bool MutableStylePropertySet::setProperty(CSSPropertyID propertyID, CSSValueID identifier) |
| { |
| setProperty(CSSProperty(propertyID, cssValuePool().createIdentifierValue(identifier))); |
| return true; |
| } |
| |
| bool MutableStylePropertySet::setProperty(CSSPropertyID propertyID, CSSPropertyID identifier) |
| { |
| setProperty(CSSProperty(propertyID, cssValuePool().createIdentifierValue(identifier))); |
| return true; |
| } |
| |
| void MutableStylePropertySet::parseDeclaration(const String& styleDeclaration, StyleSheetContents* contextStyleSheet) |
| { |
| m_propertyVector.clear(); |
| |
| CSSParserContext context; |
| if (contextStyleSheet) |
| context = contextStyleSheet->parserContext(); |
| |
| BisonCSSParser parser(context); |
| parser.parseDeclaration(this, styleDeclaration, 0, contextStyleSheet); |
| } |
| |
| void MutableStylePropertySet::addParsedProperties(const Vector<CSSProperty, 256>& properties) |
| { |
| m_propertyVector.reserveCapacity(m_propertyVector.size() + properties.size()); |
| for (unsigned i = 0; i < properties.size(); ++i) |
| addParsedProperty(properties[i]); |
| } |
| |
| // TODO(esprehn): Remove this, it used to have !important logic before sky. |
| void MutableStylePropertySet::addParsedProperty(const CSSProperty& property) |
| { |
| setProperty(property); |
| } |
| |
| String StylePropertySet::asText() const |
| { |
| return StylePropertySerializer(*this).asText(); |
| } |
| |
| // 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 staticBlockProperties[] = { |
| CSSPropertyOverflow, // This can be also be applied to replaced elements |
| CSSPropertyWebkitAspectRatio, |
| CSSPropertyTextAlign, |
| CSSPropertyTextAlignLast, |
| CSSPropertyTextIndent, |
| CSSPropertyTextJustify, |
| }; |
| |
| static const Vector<CSSPropertyID>& blockProperties() |
| { |
| DEFINE_STATIC_LOCAL(Vector<CSSPropertyID>, properties, ()); |
| if (properties.isEmpty()) |
| CSSPropertyMetadata::filterEnabledCSSPropertiesIntoVector(staticBlockProperties, WTF_ARRAY_LENGTH(staticBlockProperties), properties); |
| return properties; |
| } |
| |
| void MutableStylePropertySet::clear() |
| { |
| m_propertyVector.clear(); |
| } |
| |
| PassRefPtr<MutableStylePropertySet> StylePropertySet::copyBlockProperties() const |
| { |
| return copyPropertiesInSet(blockProperties()); |
| } |
| |
| void MutableStylePropertySet::removeBlockProperties() |
| { |
| removePropertiesInSet(blockProperties().data(), blockProperties().size()); |
| } |
| |
| inline bool containsId(const CSSPropertyID* set, unsigned length, CSSPropertyID id) |
| { |
| for (unsigned i = 0; i < length; ++i) { |
| if (set[i] == id) |
| return true; |
| } |
| return false; |
| } |
| |
| bool MutableStylePropertySet::removePropertiesInSet(const CSSPropertyID* set, unsigned length) |
| { |
| if (m_propertyVector.isEmpty()) |
| return false; |
| |
| Vector<CSSProperty> newProperties; |
| newProperties.reserveInitialCapacity(m_propertyVector.size()); |
| |
| unsigned initialSize = m_propertyVector.size(); |
| const CSSProperty* properties = m_propertyVector.data(); |
| for (unsigned n = 0; n < initialSize; ++n) { |
| const CSSProperty& property = properties[n]; |
| if (containsId(set, length, property.id())) |
| continue; |
| newProperties.append(property); |
| } |
| |
| m_propertyVector = newProperties; |
| return initialSize != m_propertyVector.size(); |
| } |
| |
| CSSProperty* MutableStylePropertySet::findCSSPropertyWithID(CSSPropertyID propertyID) |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) |
| return 0; |
| return &m_propertyVector.at(foundPropertyIndex); |
| } |
| |
| bool StylePropertySet::propertyMatches(CSSPropertyID propertyID, const CSSValue* propertyValue) const |
| { |
| int foundPropertyIndex = findPropertyIndex(propertyID); |
| if (foundPropertyIndex == -1) |
| return false; |
| return propertyAt(foundPropertyIndex).value()->equals(*propertyValue); |
| } |
| |
| void MutableStylePropertySet::removeEquivalentProperties(const StylePropertySet* style) |
| { |
| Vector<CSSPropertyID> propertiesToRemove; |
| unsigned size = m_propertyVector.size(); |
| for (unsigned i = 0; i < size; ++i) { |
| PropertyReference property = propertyAt(i); |
| if (style->propertyMatches(property.id(), property.value())) |
| propertiesToRemove.append(property.id()); |
| } |
| // FIXME: This should use mass removal. |
| for (unsigned i = 0; i < propertiesToRemove.size(); ++i) |
| removeProperty(propertiesToRemove[i]); |
| } |
| |
| void MutableStylePropertySet::removeEquivalentProperties(const CSSStyleDeclaration* style) |
| { |
| Vector<CSSPropertyID> propertiesToRemove; |
| unsigned size = m_propertyVector.size(); |
| for (unsigned i = 0; i < size; ++i) { |
| PropertyReference property = propertyAt(i); |
| if (style->cssPropertyMatches(property.id(), property.value())) |
| propertiesToRemove.append(property.id()); |
| } |
| // FIXME: This should use mass removal. |
| for (unsigned i = 0; i < propertiesToRemove.size(); ++i) |
| removeProperty(propertiesToRemove[i]); |
| } |
| |
| PassRefPtr<MutableStylePropertySet> StylePropertySet::mutableCopy() const |
| { |
| return adoptRef(new MutableStylePropertySet(*this)); |
| } |
| |
| PassRefPtr<MutableStylePropertySet> StylePropertySet::copyPropertiesInSet(const Vector<CSSPropertyID>& properties) const |
| { |
| Vector<CSSProperty, 256> list; |
| list.reserveInitialCapacity(properties.size()); |
| for (unsigned i = 0; i < properties.size(); ++i) { |
| RefPtr<CSSValue> value = getPropertyCSSValue(properties[i]); |
| if (value) |
| list.append(CSSProperty(properties[i], value.release(), false)); |
| } |
| return MutableStylePropertySet::create(list.data(), list.size()); |
| } |
| |
| CSSStyleDeclaration* MutableStylePropertySet::ensureCSSStyleDeclaration() |
| { |
| // FIXME: get rid of this weirdness of a CSSStyleDeclaration inside of a |
| // style property set. |
| if (m_cssomWrapper) { |
| ASSERT(!m_cssomWrapper->parentElement()); |
| return m_cssomWrapper.get(); |
| } |
| m_cssomWrapper = adoptPtr(new PropertySetCSSStyleDeclaration(*this)); |
| return m_cssomWrapper.get(); |
| } |
| |
| int MutableStylePropertySet::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); |
| const CSSProperty* properties = m_propertyVector.data(); |
| for (int n = m_propertyVector.size() - 1 ; n >= 0; --n) { |
| if (properties[n].metadata().m_propertyID == id) { |
| // Only enabled or internal properties should be part of the style. |
| ASSERT(CSSPropertyMetadata::isEnabledProperty(propertyID) || isInternalProperty(propertyID)); |
| return n; |
| } |
| } |
| |
| return -1; |
| } |
| |
| unsigned StylePropertySet::averageSizeInBytes() |
| { |
| // Please update this if the storage scheme changes so that this longer reflects the actual size. |
| return sizeForImmutableStylePropertySetWithPropertyCount(4); |
| } |
| |
| // See the function above if you need to update this. |
| struct SameSizeAsStylePropertySet : public RefCounted<SameSizeAsStylePropertySet> { |
| unsigned bitfield; |
| }; |
| COMPILE_ASSERT(sizeof(StylePropertySet) == sizeof(SameSizeAsStylePropertySet), style_property_set_should_stay_small); |
| |
| #ifndef NDEBUG |
| void StylePropertySet::showStyle() |
| { |
| fprintf(stderr, "%s\n", asText().ascii().data()); |
| } |
| #endif |
| |
| PassRefPtr<MutableStylePropertySet> MutableStylePropertySet::create(CSSParserMode cssParserMode) |
| { |
| return adoptRef(new MutableStylePropertySet(cssParserMode)); |
| } |
| |
| PassRefPtr<MutableStylePropertySet> MutableStylePropertySet::create(const CSSProperty* properties, unsigned count) |
| { |
| return adoptRef(new MutableStylePropertySet(properties, count)); |
| } |
| |
| String StylePropertySet::PropertyReference::cssName() const |
| { |
| return getPropertyNameString(id()); |
| } |
| |
| String StylePropertySet::PropertyReference::cssText() const |
| { |
| StringBuilder result; |
| result.append(cssName()); |
| result.appendLiteral(": "); |
| result.append(propertyValue()->cssText()); |
| result.append(';'); |
| return result.toString(); |
| } |
| |
| |
| } // namespace blink |