StylePropertySet.h [plain text]
#ifndef StylePropertySet_h
#define StylePropertySet_h
#include "CSSParserMode.h"
#include "CSSPrimitiveValue.h"
#include "CSSProperty.h"
#include "CSSPropertyNames.h"
#include <wtf/ListHashSet.h>
#include <wtf/Vector.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class CSSRule;
class CSSStyleDeclaration;
class ComputedStyleExtractor;
class ImmutableStylePropertySet;
class KURL;
class MutableStylePropertySet;
class PropertySetCSSStyleDeclaration;
class StyledElement;
class StylePropertyShorthand;
class StyleSheetContents;
class StylePropertySet : public RefCounted<StylePropertySet> {
friend class PropertyReference;
public:
void deref();
class PropertyReference {
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 static_cast<CSSPropertyID>(propertyMetadata().m_shorthandID); }
bool isImportant() const { return propertyMetadata().m_important; }
bool isInherited() const { return propertyMetadata().m_inherited; }
bool isImplicit() const { return propertyMetadata().m_implicit; }
String cssName() const;
String cssText() const;
const CSSValue* value() const { return propertyValue(); }
CSSValue* value() { return const_cast<CSSValue*>(propertyValue()); }
CSSProperty toCSSProperty() const { return CSSProperty(propertyMetadata(), const_cast<CSSValue*>(propertyValue())); }
private:
StylePropertyMetadata propertyMetadata() const;
const CSSValue* propertyValue() const;
const StylePropertySet& m_propertySet;
unsigned m_index;
};
unsigned propertyCount() const;
bool isEmpty() const;
PropertyReference propertyAt(unsigned index) const { return PropertyReference(*this, index); }
PassRefPtr<CSSValue> getPropertyCSSValue(CSSPropertyID) const;
String getPropertyValue(CSSPropertyID) const;
bool propertyIsImportant(CSSPropertyID) const;
String getPropertyShorthand(CSSPropertyID) const;
bool isPropertyImplicit(CSSPropertyID) const;
PassRefPtr<MutableStylePropertySet> copyBlockProperties() const;
CSSParserMode cssParserMode() const { return static_cast<CSSParserMode>(m_cssParserMode); }
void addSubresourceStyleURLs(ListHashSet<KURL>&, StyleSheetContents* contextStyleSheet) const;
PassRefPtr<MutableStylePropertySet> mutableCopy() const;
PassRefPtr<ImmutableStylePropertySet> immutableCopyIfNeeded() const;
PassRefPtr<MutableStylePropertySet> copyPropertiesInSet(const CSSPropertyID* set, unsigned length) const;
String asText() const;
bool isMutable() const { return m_isMutable; }
bool hasCSSOMWrapper() const { return m_ownsCSSOMWrapper; }
bool hasFailedOrCanceledSubresources() const;
static unsigned averageSizeInBytes();
#ifndef NDEBUG
void showStyle();
#endif
bool propertyMatches(CSSPropertyID, const CSSValue*) const;
protected:
StylePropertySet(CSSParserMode cssParserMode)
: m_cssParserMode(cssParserMode)
, m_ownsCSSOMWrapper(false)
, m_isMutable(true)
, m_arraySize(0)
{ }
StylePropertySet(CSSParserMode cssParserMode, unsigned immutableArraySize)
: m_cssParserMode(cssParserMode)
, m_ownsCSSOMWrapper(false)
, m_isMutable(false)
, m_arraySize(immutableArraySize)
{ }
int findPropertyIndex(CSSPropertyID) const;
unsigned m_cssParserMode : 2;
mutable unsigned m_ownsCSSOMWrapper : 1;
mutable unsigned m_isMutable : 1;
unsigned m_arraySize : 28;
private:
String getShorthandValue(const StylePropertyShorthand&) const;
String getCommonValue(const StylePropertyShorthand&) const;
enum CommonValueMode { OmitUncommonValues, ReturnNullOnUncommonValues };
String borderPropertyValue(CommonValueMode) const;
String getLayeredShorthandValue(const StylePropertyShorthand&) const;
String get4Values(const StylePropertyShorthand&) const;
String borderSpacingValue(const StylePropertyShorthand&) const;
String fontValue() const;
void appendFontLonghandValueIfExplicit(CSSPropertyID, StringBuilder& result, String& value) const;
friend class PropertySetCSSStyleDeclaration;
};
class ImmutableStylePropertySet : public StylePropertySet {
public:
~ImmutableStylePropertySet();
static PassRefPtr<ImmutableStylePropertySet> create(const CSSProperty* properties, unsigned count, CSSParserMode);
unsigned propertyCount() const { return m_arraySize; }
const CSSValue** valueArray() const;
const StylePropertyMetadata* metadataArray() const;
void* m_storage;
private:
ImmutableStylePropertySet(const CSSProperty*, unsigned count, CSSParserMode);
};
inline const CSSValue** ImmutableStylePropertySet::valueArray() const
{
return reinterpret_cast<const CSSValue**>(const_cast<const void**>((&static_cast<const ImmutableStylePropertySet*>(this)->m_storage)));
}
inline const StylePropertyMetadata* ImmutableStylePropertySet::metadataArray() const
{
return reinterpret_cast<const StylePropertyMetadata*>(&reinterpret_cast<const char*>((&static_cast<const ImmutableStylePropertySet*>(this)->m_storage))[m_arraySize * sizeof(CSSValue*)]);
}
class MutableStylePropertySet : public StylePropertySet {
public:
~MutableStylePropertySet();
static PassRefPtr<MutableStylePropertySet> create(CSSParserMode = CSSQuirksMode);
static PassRefPtr<MutableStylePropertySet> create(const CSSProperty* properties, unsigned count);
MutableStylePropertySet(const StylePropertySet&);
unsigned propertyCount() const { return m_propertyVector.size(); }
PropertySetCSSStyleDeclaration* cssStyleDeclaration();
void addParsedProperties(const Vector<CSSProperty>&);
void addParsedProperty(const CSSProperty&);
bool setProperty(CSSPropertyID, const String& value, bool important = false, StyleSheetContents* contextStyleSheet = 0);
void setProperty(CSSPropertyID, PassRefPtr<CSSValue>, bool important = false);
bool setProperty(CSSPropertyID, int identifier, bool important = false);
void appendPrefixingVariantProperty(const CSSProperty&);
void setPrefixingVariantProperty(const CSSProperty&);
void setProperty(const CSSProperty&, CSSProperty* slot = 0);
bool removeProperty(CSSPropertyID, String* returnText = 0);
void removePrefixedOrUnprefixedProperty(CSSPropertyID);
void removeBlockProperties();
bool removePropertiesInSet(const CSSPropertyID* set, unsigned length);
void removeEquivalentProperties(const StylePropertySet*);
void removeEquivalentProperties(const ComputedStyleExtractor*);
void mergeAndOverrideOnConflict(const StylePropertySet*);
void clear();
void parseDeclaration(const String& styleDeclaration, StyleSheetContents* contextStyleSheet);
CSSStyleDeclaration* ensureCSSStyleDeclaration();
CSSStyleDeclaration* ensureInlineCSSStyleDeclaration(StyledElement* parentElement);
Vector<CSSProperty, 4> m_propertyVector;
private:
MutableStylePropertySet(CSSParserMode cssParserMode)
: StylePropertySet(cssParserMode)
{ }
MutableStylePropertySet(const CSSProperty* properties, unsigned count);
bool removeShorthandProperty(CSSPropertyID);
CSSProperty* findCSSPropertyWithID(CSSPropertyID);
};
inline StylePropertyMetadata StylePropertySet::PropertyReference::propertyMetadata() const
{
if (m_propertySet.isMutable())
return static_cast<const MutableStylePropertySet&>(m_propertySet).m_propertyVector.at(m_index).metadata();
return static_cast<const ImmutableStylePropertySet&>(m_propertySet).metadataArray()[m_index];
}
inline const CSSValue* StylePropertySet::PropertyReference::propertyValue() const
{
if (m_propertySet.isMutable())
return static_cast<const MutableStylePropertySet&>(m_propertySet).m_propertyVector.at(m_index).value();
return static_cast<const ImmutableStylePropertySet&>(m_propertySet).valueArray()[m_index];
}
inline unsigned StylePropertySet::propertyCount() const
{
if (m_isMutable)
return static_cast<const MutableStylePropertySet*>(this)->m_propertyVector.size();
return m_arraySize;
}
inline bool StylePropertySet::isEmpty() const
{
return !propertyCount();
}
inline void StylePropertySet::deref()
{
if (!derefBase())
return;
if (m_isMutable)
delete static_cast<MutableStylePropertySet*>(this);
else
delete static_cast<ImmutableStylePropertySet*>(this);
}
}
#endif // StylePropertySet_h