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/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 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.
*/
#ifndef StylePropertySerializer_h
#define StylePropertySerializer_h
#include "core/css/CSSValueList.h"
#include "core/css/StylePropertySet.h"
#include <bitset>
namespace blink {
class StylePropertySet;
class StylePropertyShorthand;
class StylePropertySerializer {
STACK_ALLOCATED();
public:
explicit StylePropertySerializer(const StylePropertySet&);
String asText() const;
String getPropertyValue(CSSPropertyID) const;
private:
String getCommonValue(const StylePropertyShorthand&) const;
String borderPropertyValue() const;
String getLayeredShorthandValue(const StylePropertyShorthand&) const;
String get4Values(const StylePropertyShorthand&) const;
String borderSpacingValue(const StylePropertyShorthand&) const;
String getShorthandValue(const StylePropertyShorthand&,
String separator = " ") const;
String fontValue() const;
String fontVariantValue() const;
void appendFontLonghandValueIfNotNormal(CSSPropertyID,
StringBuilder& result) const;
String backgroundRepeatPropertyValue() const;
String getPropertyText(CSSPropertyID,
const String& value,
bool isImportant,
bool isNotFirstDecl) const;
bool isPropertyShorthandAvailable(const StylePropertyShorthand&) const;
bool shorthandHasOnlyInitialOrInheritedValue(
const StylePropertyShorthand&) const;
void appendBackgroundPropertyAsText(StringBuilder& result,
unsigned& numDecls) const;
// This function does checks common to all shorthands, and returns:
// - The serialization if the shorthand serializes as a css-wide keyword.
// - An empty string if either some longhands are not set, the important
// flag is not set consistently, or css-wide keywords are used. In these
// cases serialization will always fail.
// - A null string otherwise.
String commonShorthandChecks(const StylePropertyShorthand&) const;
// Only StylePropertySerializer uses the following two classes.
class PropertyValueForSerializer {
STACK_ALLOCATED();
public:
explicit PropertyValueForSerializer(
StylePropertySet::PropertyReference property)
: m_value(property.value()),
m_id(property.id()),
m_isImportant(property.isImportant()),
m_isInherited(property.isInherited()) {}
// TODO(sashab): Make this take a const CSSValue&.
PropertyValueForSerializer(CSSPropertyID id,
const CSSValue* value,
bool isImportant)
: m_value(value),
m_id(id),
m_isImportant(isImportant),
m_isInherited(value->isInheritedValue()) {}
CSSPropertyID id() const { return m_id; }
const CSSValue* value() const { return m_value; }
bool isImportant() const { return m_isImportant; }
bool isInherited() const { return m_isInherited; }
bool isValid() const { return m_value; }
private:
Member<const CSSValue> m_value;
CSSPropertyID m_id;
bool m_isImportant;
bool m_isInherited;
};
String getCustomPropertyText(const PropertyValueForSerializer&,
bool isNotFirstDecl) const;
class StylePropertySetForSerializer final {
DISALLOW_NEW();
public:
explicit StylePropertySetForSerializer(const StylePropertySet&);
unsigned propertyCount() const;
PropertyValueForSerializer propertyAt(unsigned index) const;
bool shouldProcessPropertyAt(unsigned index) const;
int findPropertyIndex(CSSPropertyID) const;
const CSSValue* getPropertyCSSValue(CSSPropertyID) const;
DECLARE_TRACE();
private:
bool hasExpandedAllProperty() const {
return hasAllProperty() && m_needToExpandAll;
}
bool hasAllProperty() const { return m_allIndex != -1; }
Member<const StylePropertySet> m_propertySet;
int m_allIndex;
std::bitset<numCSSProperties> m_longhandPropertyUsed;
bool m_needToExpandAll;
};
const StylePropertySetForSerializer m_propertySet;
};
} // namespace blink
#endif // StylePropertySerializer_h
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