RBrowserData.hxx

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// Author: Sergey Linev <S.Linev@gsi.de>
// Date: 2019-10-14
// Warning: This is part of the ROOT 7 prototype! It will change without notice. It might trigger earthquakes. Feedback is welcome!
 
/*************************************************************************
 * Copyright (C) 1995-2019, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
#ifndef ROOT7_RBrowserData
#define ROOT7_RBrowserData
 
#include <ROOT/Browsable/RElement.hxx>
 
#include <ROOT/RBrowserRequest.hxx>
#include <ROOT/RBrowserReply.hxx>
 
#include <memory>
#include <string>
#include <vector>
#include <utility>
 
namespace ROOT {
 
namespace Experimental {
class RLogChannel;
} // namespace Experimental
 
/// Log channel for Browser diagnostics.
ROOT::Experimental::RLogChannel &BrowserLog();
 
class RBrowserDataCleanup;
 
class RBrowserData {
 
   friend class RBrowserDataCleanup;
 
   std::shared_ptr<Browsable::RElement> fTopElement;    ///<! top element
 
   Browsable::RElementPath_t  fWorkingPath;             ///<! path showed in Breadcrumb
 
   std::vector<std::pair<Browsable::RElementPath_t, std::shared_ptr<Browsable::RElement>>> fCache; ///<! already requested elements
 
   Browsable::RElementPath_t fLastPath;                  ///<! path to last used element
   std::shared_ptr<Browsable::RElement> fLastElement;    ///<! last element used in request
   std::vector<std::unique_ptr<Browsable::RItem>> fLastItems; ///<! created browser items - used in requests
   bool fLastAllChilds{false};                           ///<! if all chlds were extracted
   std::vector<const Browsable::RItem *> fLastSortedItems;   ///<! sorted child items, used in requests
   std::string fLastSortMethod;                          ///<! last sort method
   bool fLastSortReverse{false};                         ///<! last request reverse order
   std::unique_ptr<TObject> fCleanupHandle;              ///<! cleanup handle for RecursiveRemove
 
   void ResetLastRequestData(bool with_element);
 
   bool ProcessBrowserRequest(const RBrowserRequest &request, RBrowserReply &reply);
 
public:
   RBrowserData();
 
   RBrowserData(std::shared_ptr<Browsable::RElement> elem) : RBrowserData()  { SetTopElement(elem); }
 
   virtual ~RBrowserData();
 
   void SetTopElement(std::shared_ptr<Browsable::RElement> elem);
 
   void SetWorkingPath(const Browsable::RElementPath_t &path);
 
   void CreateDefaultElements();
 
   const Browsable::RElementPath_t &GetWorkingPath() const { return fWorkingPath; }
 
   std::string ProcessRequest(const RBrowserRequest &request);
 
   std::shared_ptr<Browsable::RElement> GetElement(const std::string &str);
   std::shared_ptr<Browsable::RElement> GetElementFromTop(const Browsable::RElementPath_t &path);
 
   Browsable::RElementPath_t DecomposePath(const std::string &path, bool relative_to_work_element);
   std::shared_ptr<Browsable::RElement> GetSubElement(const Browsable::RElementPath_t &path);
 
   void ClearCache();
 
   bool RemoveFromCache(void *obj);
 
   bool RemoveFromCache(const Browsable::RElementPath_t &path);
 
};
 
 
} // namespace ROOT
 
#endif