root/ROOT/RBrowserData.hxx

0001 // Author: Sergey Linev <S.Linev@gsi.de>
0002 // Date: 2019-10-14
0003 // Warning: This is part of the ROOT 7 prototype! It will change without notice. It might trigger earthquakes. Feedback is welcome!
0004
0005 /*************************************************************************
0006  * Copyright (C) 1995-2019, Rene Brun and Fons Rademakers.               *
0007  * All rights reserved.                                                  *
0008  *                                                                       *
0009  * For the licensing terms see $ROOTSYS/LICENSE.                         *
0010  * For the list of contributors see $ROOTSYS/README/CREDITS.             *
0011  *************************************************************************/
0012
0013 #ifndef ROOT7_RBrowserData
0014 #define ROOT7_RBrowserData
0015
0016 #include <ROOT/Browsable/RElement.hxx>
0017
0018 #include <ROOT/RBrowserRequest.hxx>
0019 #include <ROOT/RBrowserReply.hxx>
0020
0021 #include <memory>
0022 #include <string>
0023 #include <vector>
0024 #include <utility>
0025
0026 namespace ROOT {
0027
0028 class RLogChannel;
0029
0030 /// Log channel for Browser diagnostics.
0031 ROOT::RLogChannel &BrowserLog();
0032
0033 class RBrowserDataCleanup;
0034
0035 class RBrowserData {
0036
0037    friend class RBrowserDataCleanup;
0038
0039    std::shared_ptr<Browsable::RElement> fTopElement;    ///<! top element
0040
0041    Browsable::RElementPath_t  fWorkingPath;             ///<! path showed in Breadcrumb
0042
0043    std::vector<std::pair<Browsable::RElementPath_t, std::shared_ptr<Browsable::RElement>>> fCache; ///<! already requested elements
0044
0045    Browsable::RElementPath_t fLastPath;                  ///<! path to last used element
0046    std::shared_ptr<Browsable::RElement> fLastElement;    ///<! last element used in request
0047    std::vector<std::unique_ptr<Browsable::RItem>> fLastItems; ///<! created browser items - used in requests
0048    bool fLastAllChilds{false};                           ///<! if all chlds were extracted
0049    std::vector<const Browsable::RItem *> fLastSortedItems;   ///<! sorted child items, used in requests
0050    std::string fLastSortMethod;                          ///<! last sort method
0051    bool fLastSortReverse{false};                         ///<! last request reverse order
0052    std::unique_ptr<TObject> fCleanupHandle;              ///<! cleanup handle for RecursiveRemove
0053
0054    void ResetLastRequestData(bool with_element);
0055
0056    bool ProcessBrowserRequest(const RBrowserRequest &request, RBrowserReply &reply);
0057
0058 public:
0059    RBrowserData();
0060
0061    RBrowserData(std::shared_ptr<Browsable::RElement> elem) : RBrowserData()  { SetTopElement(elem); }
0062
0063    virtual ~RBrowserData();
0064
0065    void SetTopElement(std::shared_ptr<Browsable::RElement> elem);
0066
0067    void SetWorkingPath(const Browsable::RElementPath_t &path);
0068
0069    void CreateDefaultElements();
0070
0071    const Browsable::RElementPath_t &GetWorkingPath() const { return fWorkingPath; }
0072
0073    std::string ProcessRequest(const RBrowserRequest &request);
0074
0075    std::shared_ptr<Browsable::RElement> GetElement(const std::string &str);
0076    std::shared_ptr<Browsable::RElement> GetElementFromTop(const Browsable::RElementPath_t &path);
0077
0078    Browsable::RElementPath_t DecomposePath(const std::string &path, bool relative_to_work_element);
0079    std::shared_ptr<Browsable::RElement> GetSubElement(const Browsable::RElementPath_t &path);
0080
0081    void ClearCache();
0082
0083    bool RemoveFromCache(void *obj);
0084
0085    bool RemoveFromCache(const Browsable::RElementPath_t &path);
0086
0087 };
0088
0089
0090 } // namespace ROOT
0091
0092 #endif