1 /* 2 * Copyright (C) 2010 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 QTFILEWATCHER_H 21 #define QTFILEWATCHER_H 22 23 #include "filewatcher.h" 24 25 #include <QFileSystemWatcher> 26 27 // This class encapsulate Qt's QFileSystemWatcher and additionally support 28 // watching a file that doesn't exist yet (the class will watch the owning 29 // directory) 30 // Only supports one file at the moment. 31 class QtFileWatcher : public FileWatcher { 32 Q_OBJECT 33 34 public: 35 // Create an empty object 36 QtFileWatcher(); 37 // Destroy the object 38 ~QtFileWatcher(); 39 40 // Adds the file to the list of file to watch 41 // (do nothing if a file is already monitored) 42 void addFile( const QString& fileName ); 43 // Removes the file to the list of file to watch 44 // (do nothing if said file is not monitored) 45 void removeFile( const QString& fileName ); 46 47 signals: 48 // Sent when the file on disk has changed in any way. 49 void fileChanged( const QString& ); 50 51 private slots: 52 void fileChangedOnDisk( const QString& filename ); 53 void directoryChangedOnDisk( const QString& filename ); 54 55 private: 56 enum MonitoringState { None, FileExists, FileRemoved }; 57 58 QFileSystemWatcher qtFileWatcher_; 59 QString fileMonitored_; 60 MonitoringState monitoringState_; 61 }; 62 63 #endif 64