Chris@439: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@439: 
Chris@439: /*
Chris@439:     Sonic Visualiser
Chris@439:     An audio file viewer and annotation editor.
Chris@439:     Centre for Digital Music, Queen Mary, University of London.
Chris@439:     This file copyright 2008 QMUL.
Chris@439:    
Chris@439:     This program is free software; you can redistribute it and/or
Chris@439:     modify it under the terms of the GNU General Public License as
Chris@439:     published by the Free Software Foundation; either version 2 of the
Chris@439:     License, or (at your option) any later version.  See the file
Chris@439:     COPYING included with this distribution for more information.
Chris@439: */
Chris@439: 
Chris@1581: #ifndef SV_RDF_TRANSFORM_FACTORY_H
Chris@1581: #define SV_RDF_TRANSFORM_FACTORY_H
Chris@439: 
Chris@439: #include <QObject>
Chris@439: #include <QString>
Chris@439: 
Chris@439: #include <vector>
Chris@439: 
Chris@439: #include "transform/Transform.h"
Chris@439: 
Chris@439: class RDFTransformFactoryImpl;
Chris@439: class ProgressReporter;
Chris@439: 
Chris@439: class RDFTransformFactory : public QObject
Chris@439: {
Chris@439:     Q_OBJECT
Chris@439: 
Chris@439: public:
Chris@439:     static QString getKnownExtensions();
Chris@439: 
Chris@439:     RDFTransformFactory(QString url);
Chris@439:     virtual ~RDFTransformFactory();
Chris@439: 
Chris@1163:     /** isRDF() may be queried at any point after construction. It
Chris@1163:         returns true if the file was parseable as RDF.
Chris@1163:     */
Chris@1163:     bool isRDF();
Chris@1163: 
Chris@1163:     /** isOK() may be queried at any point after getTransforms() has
Chris@1163:         been called. It is true if the file was parseable as RDF and
Chris@1163:         any transforms in it could be completely constructed.
Chris@1163: 
Chris@1163:         Note that even if isOK() returns true, it is still possible
Chris@1163:         that the file did not define any transforms; in this case,
Chris@1163:         getTransforms() would have returned an empty list.
Chris@1163: 
Chris@1163:         If isOK() is called before getTransforms() has been invoked to
Chris@1163:         query the file, it will return true iff isRDF() is true.
Chris@1163:     */
Chris@1163:     bool isOK();
Chris@1163: 
Chris@1163:     /** Return any error string resulting from loading or querying the
Chris@1163:         file. This will be non-empty if isRDF() or isOK() returns
Chris@1163:         false.
Chris@1163:      */
Chris@439:     QString getErrorString() const;
Chris@439: 
Chris@439:     std::vector<Transform> getTransforms(ProgressReporter *reporter);
Chris@439: 
Chris@494:     static QString writeTransformToRDF(const Transform &, QString uri);
Chris@494: 
Chris@439: protected:
Chris@439:     RDFTransformFactoryImpl *m_d;
Chris@439: };
Chris@439: 
Chris@439: #endif