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/* -*- 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 2008 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 _TABULAR_MODEL_H_
#define _TABULAR_MODEL_H_
#include <QVariant>
#include <QString>
class Command;
/**
* TabularModel is an abstract base class for models that support
* direct access to data in a tabular form. A model that implements
* TabularModel may be displayed and, perhaps, edited in a data
* spreadsheet window.
*
* This is very like a cut-down QAbstractItemModel. It assumes a
* relationship between row number and frame time.
*/
class TabularModel
{
public:
virtual ~TabularModel() { }
virtual int getRowCount() const = 0;
virtual int getColumnCount() const = 0;
virtual QString getHeading(int column) const = 0;
enum { SortRole = Qt::UserRole };
enum SortType { SortNumeric, SortAlphabetical };
virtual QVariant getData(int row, int column, int role) const = 0;
virtual bool isColumnTimeValue(int col) const = 0;
virtual SortType getSortType(int col) const = 0;
virtual sv_frame_t getFrameForRow(int row) const = 0;
virtual int getRowForFrame(sv_frame_t frame) const = 0;
virtual bool isEditable() const { return false; }
virtual Command *getSetDataCommand(int /* row */, int /* column */, const QVariant &, int /* role */) { return 0; }
virtual Command *getInsertRowCommand(int /* beforeRow */) { return 0; }
virtual Command *getRemoveRowCommand(int /* row */) { return 0; }
};
#endif
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