view data/fileio/FileFinder.h @ 795:dc20458f6f85 qt5

Don't need to check for Dataquay, and in fact we can pick up the wrong version if we do. Just assume it is available (building in e.g. sv subdir configuration)

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2009 QMUL.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef _FILE_FINDER_H_
#define _FILE_FINDER_H_

#include <QString>

class FileFinder 
{
public:
    enum FileType {
        SessionFile,
        AudioFile,
        LayerFile,
        LayerFileNoMidi,
        SessionOrAudioFile,
        ImageFile,
        AnyFile
    };

    virtual QString getOpenFileName(FileType type, QString fallbackLocation = "") = 0;
    virtual QString getSaveFileName(FileType type, QString fallbackLocation = "") = 0;
    virtual void registerLastOpenedFilePath(FileType type, QString path) = 0;

    virtual QString find(FileType type, QString location, QString lastKnownLocation = "") = 0;

    static FileFinder *getInstance() {
        FFContainer *container = FFContainer::getInstance();
        return container->getFileFinder();
    }

protected:
    class FFContainer {
    public:
        static FFContainer *getInstance() {
            static FFContainer instance;
            return &instance;
        }
        void setFileFinder(FileFinder *ff) { m_ff = ff; }
        FileFinder *getFileFinder() const { return m_ff; }
    private:
        FileFinder *m_ff;
    };

    static void registerFileFinder(FileFinder *ff) {
        FFContainer *container = FFContainer::getInstance();
        container->setFileFinder(ff);
    }
};

#endif