#ifndef CCHAINGETTER_HH
#define CCHAINBETTER_HH


class CChainGetter	{
public:
	CChainGetter(string TreeName="cbmsim"):m_strTreeName(TreeName)	{}
	~CChainGetter() {}
		
	void SetFileListFile(string filename)	{ m_strFileListFile=filename; } 
	void SetFileExtension(string ext)	{ m_strFileExtension=ext; }

	//Get the Root-Tree. If a Root-Tree-File is specified, it will be used. 
	//Otherwise the strFileListFile is evaluated    
	TChain * GetChain(TString SingleFilename="");
	TTree * GetTree(TString SingleFilename);
	
	//Reads the Filenames listet in filename and stores them in a vector
	int ReadFileNames();
	
	//check if file exists
	bool CheckFile(string filename);
	
	//check if tree is sane
	bool CheckTree(string filename);
	
private:
	string m_strTreeName;
	string m_strFileListFile; //a name of the file, where every line is the name of a root tree file 
	string m_strFileExtension; //a string to be added at the end of every name in vFileNames
	vector<string> m_vFileNames;	//a list of files out of which the tree consists
};

#endif