svcore  1.9
TabularModel.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 2008 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 _TABULAR_MODEL_H_
00017 #define _TABULAR_MODEL_H_
00018 
00019 #include <QVariant>
00020 #include <QString>
00021 
00022 class Command;
00023 
00034 class TabularModel
00035 {
00036 public:
00037     virtual ~TabularModel() { }
00038 
00039     virtual int getRowCount() const = 0;
00040     virtual int getColumnCount() const = 0;
00041 
00042     virtual QString getHeading(int column) const = 0;
00043 
00044     enum { SortRole = Qt::UserRole };
00045     enum SortType { SortNumeric, SortAlphabetical };
00046 
00047     virtual QVariant getData(int row, int column, int role) const = 0;
00048     virtual bool isColumnTimeValue(int col) const = 0;
00049     virtual SortType getSortType(int col) const = 0;
00050 
00051     virtual long getFrameForRow(int row) const = 0;
00052     virtual int getRowForFrame(long frame) const = 0;
00053 
00054     virtual bool isEditable() const { return false; }
00055     virtual Command *getSetDataCommand(int /* row */, int /* column */, const QVariant &, int /* role */) { return 0; }
00056     virtual Command *getInsertRowCommand(int /* beforeRow */) { return 0; }
00057     virtual Command *getRemoveRowCommand(int /* row */) { return 0; }
00058 };
00059 
00060 #endif