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/*
* (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 "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 ImmutableStylePropertySet;
class KURL;
class MutableStylePropertySet;
class PropertySetCSSStyleDeclaration;
class StyledElement;
class StylePropertyShorthand;
class StyleSheetContents;
class StylePropertySet : public RefCounted<StylePropertySet> {
public:
~StylePropertySet();
// Override RefCounted's deref() to ensure operator delete is called on
// the appropriate subclass type.
void deref();
static PassRefPtr<StylePropertySet> create(CSSParserMode = CSSQuirksMode);
static PassRefPtr<StylePropertySet> create(const CSSProperty* properties, unsigned count);
static PassRefPtr<StylePropertySet> createImmutable(const CSSProperty* properties, unsigned count, CSSParserMode);
unsigned propertyCount() const;
bool isEmpty() const;
const CSSProperty& propertyAt(unsigned index) const;
CSSProperty& propertyAt(unsigned index);
PassRefPtr<CSSValue> getPropertyCSSValue(CSSPropertyID) const;
String getPropertyValue(CSSPropertyID) const;
bool propertyIsImportant(CSSPropertyID) const;
CSSPropertyID getPropertyShorthand(CSSPropertyID) const;
bool isPropertyImplicit(CSSPropertyID) const;
// These expand shorthand properties into multiple properties.
bool setProperty(CSSPropertyID, const String& value, bool important = false, StyleSheetContents* contextStyleSheet = 0);
void setProperty(CSSPropertyID, PassRefPtr<CSSValue>, bool important = false);
// These do not. FIXME: This is too messy, we can do better.
bool setProperty(CSSPropertyID, int identifier, bool important = false);
void setProperty(const CSSProperty&, CSSProperty* slot = 0);
bool removeProperty(CSSPropertyID, String* returnText = 0);
void parseDeclaration(const String& styleDeclaration, StyleSheetContents* contextStyleSheet);
void addParsedProperties(const Vector<CSSProperty>&);
void addParsedProperty(const CSSProperty&);
PassRefPtr<StylePropertySet> copyBlockProperties() const;
void removeBlockProperties();
bool removePropertiesInSet(const CSSPropertyID* set, unsigned length);
void mergeAndOverrideOnConflict(const StylePropertySet*);
CSSParserMode cssParserMode() const { return static_cast<CSSParserMode>(m_cssParserMode); }
void addSubresourceStyleURLs(ListHashSet<KURL>&, StyleSheetContents* contextStyleSheet) const;
PassRefPtr<StylePropertySet> copy() const;
PassRefPtr<StylePropertySet> immutableCopyIfNeeded() const;
void removeEquivalentProperties(const StylePropertySet*);
void removeEquivalentProperties(const CSSStyleDeclaration*);
PassRefPtr<StylePropertySet> copyPropertiesInSet(const CSSPropertyID* set, unsigned length) const;
String asText() const;
void clearParentElement(StyledElement*);
CSSStyleDeclaration* ensureCSSStyleDeclaration();
CSSStyleDeclaration* ensureInlineCSSStyleDeclaration(const StyledElement* parentElement);
bool isMutable() const { return m_isMutable; }
bool hasFailedOrCanceledSubresources() const;
static unsigned averageSizeInBytes();
void reportMemoryUsage(MemoryObjectInfo*) const;
#ifndef NDEBUG
void showStyle();
#endif
const CSSProperty* immutablePropertyArray() 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)
{ }
Vector<CSSProperty, 4>& mutablePropertyVector();
const Vector<CSSProperty, 4>& mutablePropertyVector() const;
unsigned m_cssParserMode : 2;
mutable unsigned m_ownsCSSOMWrapper : 1;
mutable unsigned m_isMutable : 1;
unsigned m_arraySize : 28;
private:
void setNeedsStyleRecalc();
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;
bool appendFontLonghandValueIfExplicit(CSSPropertyID, StringBuilder& result) const;
bool removeShorthandProperty(CSSPropertyID);
bool propertyMatches(const CSSProperty*) const;
const CSSProperty* findPropertyWithId(CSSPropertyID) const;
CSSProperty* findPropertyWithId(CSSPropertyID);
void append(const CSSProperty&);
friend class PropertySetCSSStyleDeclaration;
};
class ImmutableStylePropertySet : public StylePropertySet {
public:
ImmutableStylePropertySet(const CSSProperty*, unsigned count, CSSParserMode);
~ImmutableStylePropertySet();
void* m_propertyArray;
};
class MutableStylePropertySet : public StylePropertySet {
public:
MutableStylePropertySet(CSSParserMode cssParserMode)
: StylePropertySet(cssParserMode)
{ }
MutableStylePropertySet(const CSSProperty* properties, unsigned count);
MutableStylePropertySet(const StylePropertySet&);
Vector<CSSProperty, 4> m_propertyVector;
};
inline Vector<CSSProperty, 4>& StylePropertySet::mutablePropertyVector()
{
ASSERT(m_isMutable);
return static_cast<MutableStylePropertySet*>(this)->m_propertyVector;
}
inline const Vector<CSSProperty, 4>& StylePropertySet::mutablePropertyVector() const
{
ASSERT(m_isMutable);
return static_cast<const MutableStylePropertySet*>(this)->m_propertyVector;
}
inline const CSSProperty* StylePropertySet::immutablePropertyArray() const
{
ASSERT(!m_isMutable);
return reinterpret_cast<const CSSProperty*>(&static_cast<const ImmutableStylePropertySet*>(this)->m_propertyArray);
}
inline CSSProperty& StylePropertySet::propertyAt(unsigned index)
{
return mutablePropertyVector().at(index);
}
inline const CSSProperty& StylePropertySet::propertyAt(unsigned index) const
{
if (m_isMutable)
return mutablePropertyVector().at(index);
return immutablePropertyArray()[index];
}
inline unsigned StylePropertySet::propertyCount() const
{
if (m_isMutable)
return mutablePropertyVector().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);
}
} // namespace WebCore
#endif // StylePropertySet_h
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