1 /* 2 * Copyright (C) 2013 Nicolas Bonnefon and other contributors 3 * 4 * This file is part of glogg. 5 * 6 * glogg is free software: you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation, either version 3 of the License, or 9 * (at your option) any later version. 10 * 11 * glogg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with glogg. If not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #ifndef SESSION_H 21 #define SESSION_H 22 23 #include <memory> 24 #include <unordered_map> 25 #include <string> 26 27 #include <QDateTime> 28 29 class ViewInterface; 30 class LogData; 31 class LogFilteredData; 32 class SavedSearches; 33 34 // The session is responsible for maintaining the list of open log files 35 // and their association with Views. 36 // It also maintains the domain objects which are common to all log files 37 // (SavedSearches, FileHistory, QFPattern...) 38 class Session { 39 public: 40 Session(); 41 ~Session(); 42 43 // No copy/assignment please 44 Session( const Session& ) = delete; 45 Session& operator =( const Session& ) = delete; 46 47 // Return the view associated to a file if it is open 48 // The filename must be strictly identical to trigger a match 49 // (no match in case of e.g. relative vs. absolute pathname. 50 ViewInterface* getViewIfOpen( const std::string& file_name ) const; 51 // Open a new file, starts its asynchronous loading, and construct a new 52 // view for it (the caller passes a factory to build the concrete view) 53 // The ownership of the view is given to the caller 54 // Throw exceptions if the file is already open or if it cannot be open. 55 ViewInterface* open( const std::string& file_name, 56 std::function<ViewInterface*()> view_factory ); 57 // Close the file identified by the view passed 58 // Throw an exception if it does not exist. 59 void close( const ViewInterface* view ); 60 // Get the size (in bytes) and number of lines in the current file. 61 // The file is identified by the view attached to it. 62 void getFileInfo( const ViewInterface* view, uint64_t* fileSize, 63 uint32_t* fileNbLine, QDateTime* lastModified ) const; 64 65 private: 66 struct OpenFile { 67 std::string fileName; 68 std::shared_ptr<LogData> logData; 69 std::shared_ptr<LogFilteredData> logFilteredData; 70 ViewInterface* view; 71 }; 72 73 // Open a file without checking if it is existing/readable 74 ViewInterface* openAlways( const std::string& file_name, 75 std::function<ViewInterface*()> view_factory ); 76 // Find an open file from its associated view 77 OpenFile* findOpenFileFromView( const ViewInterface* view ); 78 const OpenFile* findOpenFileFromView( const ViewInterface* view ) const; 79 80 // List of open files 81 typedef std::unordered_map<const ViewInterface*, OpenFile> OpenFileMap; 82 OpenFileMap openFiles_; 83 84 // Global search history 85 std::shared_ptr<SavedSearches> savedSearches_; 86 }; 87 88 #endif 89