#ifndef XMLDOCUMENTROWSCACHE_H
#define XMLDOCUMENTROWSCACHE_H

#include <boost/shared_ptr.hpp>
#include <map>
#include <set>
#include <curlHelper.h>
#include <glibmm/ustring.h>
#include <libxml++/document.h>

class XmlDocumentCache {
	public:
		typedef std::set<Glib::ustring> Queued;
		typedef boost::shared_ptr<xmlpp::Document> DocumentPtr;
		typedef boost::function0<DocumentPtr> ReturnDocument;
		typedef std::map<const Glib::ustring, ReturnDocument> Documents;

	protected:
		static Queued queued;
		static Documents documents;

		void queue(const Glib::ustring & url, const char * encoding, ExecContext *) const;
		
		virtual CurlPtr newCurl(ExecContext *) const = 0;
		virtual bool asHtml(ExecContext * ec) const = 0;
		virtual bool withWarnings(ExecContext * ec) const = 0;

	protected:
		DocumentPtr getDocument(const Glib::ustring & url, const char * encoding, ExecContext * ec) const;

	private:
		static CurlBulkFetcher cbf;

		friend class XmlDocumentCachePopulator;
		friend class XmlDocumentCacheClearer;
};

#endif