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#ifndef LH_MEDIA_QUERY_H
#define LH_MEDIA_QUERY_H
namespace litehtml
{
struct media_query_expression
{
typedef std::vector<media_query_expression> vector;
media_feature feature;
int val;
int val2;
bool check_as_bool;
media_query_expression()
{
check_as_bool = false;
feature = media_feature_none;
val = 0;
val2 = 0;
}
bool check(const media_features& features) const;
};
class media_query
{
public:
typedef std::shared_ptr<media_query> ptr;
typedef std::vector<media_query::ptr> vector;
private:
media_query_expression::vector m_expressions;
bool m_not;
media_type m_media_type;
public:
media_query();
media_query(const media_query& val);
static media_query::ptr create_from_string(const string& str, const std::shared_ptr<document>& doc);
bool check(const media_features& features) const;
};
class media_query_list
{
public:
typedef std::shared_ptr<media_query_list> ptr;
typedef std::vector<media_query_list::ptr> vector;
private:
media_query::vector m_queries;
bool m_is_used;
public:
media_query_list();
media_query_list(const media_query_list& val);
static media_query_list::ptr create_from_string(const string& str, const std::shared_ptr<document>& doc);
bool is_used() const;
bool apply_media_features(const media_features& features); // returns true if the m_is_used changed
};
inline media_query_list::media_query_list(const media_query_list& val)
{
m_is_used = val.m_is_used;
m_queries = val.m_queries;
}
inline media_query_list::media_query_list()
{
m_is_used = false;
}
inline bool media_query_list::is_used() const
{
return m_is_used;
}
}
#endif // LH_MEDIA_QUERY_H
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