/***********************************************************************
	SchemeManager
***********************************************************************/
class SchemeManager
{
	static SchemeManager& getSingleton();

	Scheme* loadScheme(string filename, string resourcegroup="");
	void unloadScheme(string name);
	bool isSchemePresent(string name) const;
	Scheme* getScheme(string name) const;
	void unloadAllSchemes();

    SchemeIterator getIterator() const;
};