svcore  1.9
FileFinder.h
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00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
00002 
00003 /*
00004     Sonic Visualiser
00005     An audio file viewer and annotation editor.
00006     Centre for Digital Music, Queen Mary, University of London.
00007     This file copyright 2009 QMUL.
00008     
00009     This program is free software; you can redistribute it and/or
00010     modify it under the terms of the GNU General Public License as
00011     published by the Free Software Foundation; either version 2 of the
00012     License, or (at your option) any later version.  See the file
00013     COPYING included with this distribution for more information.
00014 */
00015 
00016 #ifndef _FILE_FINDER_H_
00017 #define _FILE_FINDER_H_
00018 
00019 #include <QString>
00020 
00021 class FileFinder 
00022 {
00023 public:
00024     enum FileType {
00025         SessionFile,
00026         AudioFile,
00027         LayerFile,
00028         LayerFileNoMidi,
00029         SessionOrAudioFile,
00030         ImageFile,
00031         AnyFile,
00032         CSVFile,
00033         LayerFileNonSV,
00034         LayerFileNoMidiNonSV,
00035     };
00036 
00037     virtual QString getOpenFileName(FileType type, QString fallbackLocation = "") = 0;
00038     virtual QString getSaveFileName(FileType type, QString fallbackLocation = "") = 0;
00039     virtual void registerLastOpenedFilePath(FileType type, QString path) = 0;
00040 
00041     virtual QString find(FileType type, QString location, QString lastKnownLocation = "") = 0;
00042 
00043     static FileFinder *getInstance() {
00044         FFContainer *container = FFContainer::getInstance();
00045         return container->getFileFinder();
00046     }
00047 
00048 protected:
00049     class FFContainer {
00050     public:
00051         static FFContainer *getInstance() {
00052             static FFContainer instance;
00053             return &instance;
00054         }
00055         void setFileFinder(FileFinder *ff) { m_ff = ff; }
00056         FileFinder *getFileFinder() const { return m_ff; }
00057     private:
00058         FileFinder *m_ff;
00059     };
00060 
00061     static void registerFileFinder(FileFinder *ff) {
00062         FFContainer *container = FFContainer::getInstance();
00063         container->setFileFinder(ff);
00064     }
00065 };
00066 
00067 #endif
00068 
00069