JRootObject.hh

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#ifndef __JGIZMO__JROOTOBJECT__
#define __JGIZMO__JROOTOBJECT__
 
#include <string>
 
#include "TObject.h"
#include "TString.h"
 
#include "JLang/JPointer.hh"
 
 
/**
 * \author mdejong
 */
 
namespace JGIZMO {}
namespace JPP { using namespace JGIZMO; }
 
namespace JGIZMO {
 
  using JLANG::JPointer;
 
  static const char LABEL_TERMINATOR  =  '&';     //!< label terminator
 
 
  /**
   * Auxiliary data structure for TObject with a user defined label.
   */
  class JRootObject :
    public JPointer<TObject>
  {
  public:
    /**
     * Constructor.
     *
     * \param  __p          pointer to object
     */
    JRootObject(TObject* __p) :
      JLANG::JPointer<TObject>(__p)
    {
      label = get()->GetName();
    }
 
 
    /**
     * Constructor.
     *
     * \param  __p          pointer to object
     * \param  __label      label
     */
    JRootObject(TObject*       __p,
                const TString& __label):
      JLANG::JPointer<TObject>(__p)
    {
      this->label = __label;
    }
 
 
    /**
     * Get label.
     *
     * \return              label
     */
    TString getLabel() const
    { 
      TString buffer(this->label);
      
      const Ssiz_t pos = buffer.Last(LABEL_TERMINATOR);
 
      if (pos != kNPOS) {
        buffer = buffer(0, pos);
      }
 
      return buffer;
    }
 
 
    /**
     * Set label.
     *
     * \param  label        label
     */
    void setLabel(const TString& label)
    { 
      this->label = label;
    }
 
 
    /**
     * Draw object.
     */
    void Draw(const std::string& option) const
    { 
      this->get()->Draw(option.c_str());
    }
 
  protected:
    TString  label; 
  };
}
 
#endif