#include "variables.h"
#include "xmlObjectLoader.h"
#include "xmlStorage.h"
#include "appEngine.h"

/// Variable implementation to access session contents
class VariableSession : public VariableImplDyn {
	public:
		VariableSession(const xmlpp::Element * e) :
			VariableImplDyn(e),
			name(e->get_attribute_value("name"))
		{
		}
		const VariableType & value() const
		{
			try {
				cache = ApplicationEngine::getCurrent()->session()->GetValue(name);
			}
			catch (Session::VariableNotFound) {
				if (!defaultValue) {
					throw;
				}
				cache = (*defaultValue)();
			}
			return cache;
		}
	private:
		const Glib::ustring name;
};
DECLARE_COMPONENT_LOADER("session", VariableSession, VariableLoader);