| /* |
| * (C) 1999-2003 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2004, 2005, 2006, 2008, 2012 Apple Inc. 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. |
| */ |
| |
| #ifndef StylePropertySet_h |
| #define StylePropertySet_h |
| |
| #include "core/CSSPropertyNames.h" |
| #include "core/CoreExport.h" |
| #include "core/css/CSSPrimitiveValue.h" |
| #include "core/css/CSSProperty.h" |
| #include "core/css/PropertySetCSSStyleDeclaration.h" |
| #include "core/css/parser/CSSParserMode.h" |
| #include "wtf/ListHashSet.h" |
| #include "wtf/Noncopyable.h" |
| #include "wtf/Vector.h" |
| #include "wtf/text/WTFString.h" |
| #include <algorithm> |
| |
| namespace blink { |
| |
| class CSSStyleDeclaration; |
| class ImmutableStylePropertySet; |
| class MutableStylePropertySet; |
| class PropertyRegistry; |
| class StyleSheetContents; |
| |
| class CORE_EXPORT StylePropertySet |
| : public GarbageCollectedFinalized<StylePropertySet> { |
| WTF_MAKE_NONCOPYABLE(StylePropertySet); |
| friend class PropertyReference; |
| |
| public: |
| void finalizeGarbageCollectedObject(); |
| |
| class PropertyReference { |
| STACK_ALLOCATED(); |
| |
| public: |
| PropertyReference(const StylePropertySet& propertySet, unsigned index) |
| : m_propertySet(&propertySet), m_index(index) {} |
| |
| CSSPropertyID id() const { |
| return static_cast<CSSPropertyID>(propertyMetadata().m_propertyID); |
| } |
| CSSPropertyID shorthandID() const { |
| return propertyMetadata().shorthandID(); |
| } |
| |
| bool isImportant() const { return propertyMetadata().m_important; } |
| bool isInherited() const { return propertyMetadata().m_inherited; } |
| bool isImplicit() const { return propertyMetadata().m_implicit; } |
| |
| const CSSValue& value() const { return propertyValue(); } |
| |
| // FIXME: Remove this. |
| CSSProperty toCSSProperty() const { |
| return CSSProperty(propertyMetadata(), propertyValue()); |
| } |
| |
| const StylePropertyMetadata& propertyMetadata() const; |
| |
| private: |
| const CSSValue& propertyValue() const; |
| |
| Member<const StylePropertySet> m_propertySet; |
| unsigned m_index; |
| }; |
| |
| unsigned propertyCount() const; |
| bool isEmpty() const; |
| PropertyReference propertyAt(unsigned index) const { |
| return PropertyReference(*this, index); |
| } |
| |
| template <typename T> // CSSPropertyID or AtomicString |
| int findPropertyIndex(T property) const; |
| |
| bool hasProperty(CSSPropertyID property) const { |
| return findPropertyIndex(property) != -1; |
| } |
| |
| template <typename T> // CSSPropertyID or AtomicString |
| const CSSValue* getPropertyCSSValue(T property) const; |
| |
| template <typename T> // CSSPropertyID or AtomicString |
| String getPropertyValue(T property) const; |
| |
| template <typename T> // CSSPropertyID or AtomicString |
| bool propertyIsImportant(T property) const; |
| |
| bool shorthandIsImportant(CSSPropertyID) const; |
| bool shorthandIsImportant(AtomicString customPropertyName) const; |
| |
| CSSPropertyID getPropertyShorthand(CSSPropertyID) const; |
| bool isPropertyImplicit(CSSPropertyID) const; |
| |
| CSSParserMode cssParserMode() const { |
| return static_cast<CSSParserMode>(m_cssParserMode); |
| } |
| |
| MutableStylePropertySet* mutableCopy() const; |
| ImmutableStylePropertySet* immutableCopyIfNeeded() const; |
| |
| MutableStylePropertySet* copyPropertiesInSet( |
| const Vector<CSSPropertyID>&) const; |
| |
| String asText() const; |
| |
| bool isMutable() const { return m_isMutable; } |
| |
| bool hasFailedOrCanceledSubresources() const; |
| |
| static unsigned averageSizeInBytes(); |
| |
| #ifndef NDEBUG |
| void showStyle(); |
| #endif |
| |
| bool propertyMatches(CSSPropertyID, const CSSValue&) const; |
| |
| DECLARE_TRACE(); |
| DEFINE_INLINE_TRACE_AFTER_DISPATCH() {} |
| |
| protected: |
| enum { MaxArraySize = (1 << 28) - 1 }; |
| |
| StylePropertySet(CSSParserMode cssParserMode) |
| : m_cssParserMode(cssParserMode), m_isMutable(true), m_arraySize(0) {} |
| |
| StylePropertySet(CSSParserMode cssParserMode, unsigned immutableArraySize) |
| : m_cssParserMode(cssParserMode), |
| m_isMutable(false), |
| m_arraySize(std::min(immutableArraySize, unsigned(MaxArraySize))) {} |
| |
| unsigned m_cssParserMode : 3; |
| mutable unsigned m_isMutable : 1; |
| unsigned m_arraySize : 28; |
| |
| friend class PropertySetCSSStyleDeclaration; |
| }; |
| |
| // Used for lazily parsing properties. |
| class CSSLazyPropertyParser |
| : public GarbageCollectedFinalized<CSSLazyPropertyParser> { |
| WTF_MAKE_NONCOPYABLE(CSSLazyPropertyParser); |
| |
| public: |
| CSSLazyPropertyParser() {} |
| virtual ~CSSLazyPropertyParser() {} |
| virtual StylePropertySet* parseProperties() = 0; |
| DECLARE_VIRTUAL_TRACE(); |
| }; |
| |
| class CORE_EXPORT ImmutableStylePropertySet : public StylePropertySet { |
| public: |
| ~ImmutableStylePropertySet(); |
| static ImmutableStylePropertySet* create(const CSSProperty* properties, |
| unsigned count, |
| CSSParserMode); |
| |
| unsigned propertyCount() const { return m_arraySize; } |
| |
| const Member<const CSSValue>* valueArray() const; |
| const StylePropertyMetadata* metadataArray() const; |
| |
| template <typename T> // CSSPropertyID or AtomicString |
| int findPropertyIndex(T property) const; |
| |
| DECLARE_TRACE_AFTER_DISPATCH(); |
| |
| void* operator new(std::size_t, void* location) { return location; } |
| |
| void* m_storage; |
| |
| private: |
| ImmutableStylePropertySet(const CSSProperty*, unsigned count, CSSParserMode); |
| }; |
| |
| inline const Member<const CSSValue>* ImmutableStylePropertySet::valueArray() |
| const { |
| return reinterpret_cast<const Member<const CSSValue>*>( |
| const_cast<const void**>(&(this->m_storage))); |
| } |
| |
| inline const StylePropertyMetadata* ImmutableStylePropertySet::metadataArray() |
| const { |
| return reinterpret_cast<const StylePropertyMetadata*>( |
| &reinterpret_cast<const char*>( |
| &(this->m_storage))[m_arraySize * sizeof(Member<CSSValue>)]); |
| } |
| |
| DEFINE_TYPE_CASTS(ImmutableStylePropertySet, |
| StylePropertySet, |
| set, |
| !set->isMutable(), |
| !set.isMutable()); |
| |
| class CORE_EXPORT MutableStylePropertySet : public StylePropertySet { |
| public: |
| ~MutableStylePropertySet() {} |
| static MutableStylePropertySet* create(CSSParserMode); |
| static MutableStylePropertySet* create(const CSSProperty* properties, |
| unsigned count); |
| |
| unsigned propertyCount() const { return m_propertyVector.size(); } |
| |
| // Returns whether this style set was changed. |
| bool addParsedProperties(const HeapVector<CSSProperty, 256>&); |
| bool addRespectingCascade(const CSSProperty&); |
| |
| struct SetResult { |
| bool didParse; |
| bool didChange; |
| }; |
| // These expand shorthand properties into multiple properties. |
| SetResult setProperty(CSSPropertyID unresolvedProperty, |
| const String& value, |
| bool important = false, |
| StyleSheetContents* contextStyleSheet = 0); |
| SetResult setProperty(const AtomicString& customPropertyName, |
| const PropertyRegistry*, |
| const String& value, |
| bool important, |
| StyleSheetContents* contextStyleSheet, |
| bool isAnimationTainted); |
| void setProperty(CSSPropertyID, const CSSValue&, bool important = false); |
| |
| // These do not. FIXME: This is too messy, we can do better. |
| bool setProperty(CSSPropertyID, |
| CSSValueID identifier, |
| bool important = false); |
| bool setProperty(const CSSProperty&, CSSProperty* slot = 0); |
| |
| template <typename T> // CSSPropertyID or AtomicString |
| bool removeProperty(T property, String* returnText = 0); |
| bool removePropertiesInSet(const CSSPropertyID* set, unsigned length); |
| void removeEquivalentProperties(const StylePropertySet*); |
| void removeEquivalentProperties(const CSSStyleDeclaration*); |
| |
| void mergeAndOverrideOnConflict(const StylePropertySet*); |
| |
| void clear(); |
| void parseDeclarationList(const String& styleDeclaration, |
| StyleSheetContents* contextStyleSheet); |
| |
| CSSStyleDeclaration* ensureCSSStyleDeclaration(); |
| |
| template <typename T> // CSSPropertyID or AtomicString |
| int findPropertyIndex(T property) const; |
| |
| DECLARE_TRACE_AFTER_DISPATCH(); |
| |
| private: |
| explicit MutableStylePropertySet(CSSParserMode); |
| explicit MutableStylePropertySet(const StylePropertySet&); |
| MutableStylePropertySet(const CSSProperty* properties, unsigned count); |
| |
| bool removePropertyAtIndex(int, String* returnText); |
| |
| bool removeShorthandProperty(CSSPropertyID); |
| bool removeShorthandProperty(const AtomicString& customPropertyName) { |
| return false; |
| } |
| CSSProperty* findCSSPropertyWithID( |
| CSSPropertyID, |
| const AtomicString& customPropertyName = nullAtom); |
| Member<PropertySetCSSStyleDeclaration> m_cssomWrapper; |
| |
| friend class StylePropertySet; |
| |
| HeapVector<CSSProperty, 4> m_propertyVector; |
| }; |
| |
| DEFINE_TYPE_CASTS(MutableStylePropertySet, |
| StylePropertySet, |
| set, |
| set->isMutable(), |
| set.isMutable()); |
| |
| inline MutableStylePropertySet* toMutableStylePropertySet( |
| const Persistent<StylePropertySet>& set) { |
| return toMutableStylePropertySet(set.get()); |
| } |
| |
| inline MutableStylePropertySet* toMutableStylePropertySet( |
| const Member<StylePropertySet>& set) { |
| return toMutableStylePropertySet(set.get()); |
| } |
| |
| inline const StylePropertyMetadata& |
| StylePropertySet::PropertyReference::propertyMetadata() const { |
| if (m_propertySet->isMutable()) |
| return toMutableStylePropertySet(*m_propertySet) |
| .m_propertyVector.at(m_index) |
| .metadata(); |
| return toImmutableStylePropertySet(*m_propertySet).metadataArray()[m_index]; |
| } |
| |
| inline const CSSValue& StylePropertySet::PropertyReference::propertyValue() |
| const { |
| if (m_propertySet->isMutable()) |
| return *toMutableStylePropertySet(*m_propertySet) |
| .m_propertyVector.at(m_index) |
| .value(); |
| return *toImmutableStylePropertySet(*m_propertySet).valueArray()[m_index]; |
| } |
| |
| inline unsigned StylePropertySet::propertyCount() const { |
| if (m_isMutable) |
| return toMutableStylePropertySet(this)->m_propertyVector.size(); |
| return m_arraySize; |
| } |
| |
| inline bool StylePropertySet::isEmpty() const { |
| return !propertyCount(); |
| } |
| |
| template <typename T> |
| inline int StylePropertySet::findPropertyIndex(T property) const { |
| if (m_isMutable) |
| return toMutableStylePropertySet(this)->findPropertyIndex(property); |
| return toImmutableStylePropertySet(this)->findPropertyIndex(property); |
| } |
| |
| } // namespace blink |
| |
| #endif // StylePropertySet_h |