#pragma once
#include <wtf/RefCounted.h>
#include <wtf/TypeCasts.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class CSSStyleSheet;
class StyleRuleBase;
struct CSSParserContext;
typedef int ExceptionCode;
class CSSRule : public RefCounted<CSSRule> {
public:
virtual ~CSSRule() { }
enum Type {
UNKNOWN_RULE,
STYLE_RULE,
CHARSET_RULE,
IMPORT_RULE,
MEDIA_RULE,
FONT_FACE_RULE,
PAGE_RULE,
KEYFRAMES_RULE,
KEYFRAME_RULE,
SUPPORTS_RULE = 12,
#if ENABLE(CSS_DEVICE_ADAPTATION)
WEBKIT_VIEWPORT_RULE = 15,
#endif
#if ENABLE(CSS_REGIONS)
WEBKIT_REGION_RULE = 16,
#endif
};
enum DeprecatedType {
WEBKIT_KEYFRAMES_RULE = 7,
WEBKIT_KEYFRAME_RULE = 8
};
virtual Type type() const = 0;
virtual String cssText() const = 0;
virtual void reattach(StyleRuleBase&) = 0;
void setParentStyleSheet(CSSStyleSheet* styleSheet)
{
m_parentIsRule = false;
m_parentStyleSheet = styleSheet;
}
void setParentRule(CSSRule* rule)
{
m_parentIsRule = true;
m_parentRule = rule;
}
CSSStyleSheet* parentStyleSheet() const
{
if (m_parentIsRule)
return m_parentRule ? m_parentRule->parentStyleSheet() : 0;
return m_parentStyleSheet;
}
CSSRule* parentRule() const { return m_parentIsRule ? m_parentRule : 0; }
void setCssText(const String&, ExceptionCode&);
protected:
CSSRule(CSSStyleSheet* parent)
: m_hasCachedSelectorText(false)
, m_parentIsRule(false)
, m_parentStyleSheet(parent)
{
}
bool hasCachedSelectorText() const { return m_hasCachedSelectorText; }
void setHasCachedSelectorText(bool hasCachedSelectorText) const { m_hasCachedSelectorText = hasCachedSelectorText; }
const CSSParserContext& parserContext() const;
private:
mutable unsigned char m_hasCachedSelectorText : 1;
unsigned char m_parentIsRule : 1;
union {
CSSRule* m_parentRule;
CSSStyleSheet* m_parentStyleSheet;
};
};
}
#define SPECIALIZE_TYPE_TRAITS_CSS_RULE(ToValueTypeName, predicate) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToValueTypeName) \
static bool isType(const WebCore::CSSRule& rule) { return rule.type() == WebCore::predicate; } \
SPECIALIZE_TYPE_TRAITS_END()